For purposes of the present disclosure, the term "wave," "wave-shaped," "sine-wave" or "S-shaped" refers to the asymptotic character of the curvature of the present transition surfaces. Specifically, the shape of the distortion approximates the shape of the wedges. Fibreglass GRP rods are pultruded with a high volume fraction of unidirectional fibreglass in a polyester matrix to BS EN 13706 specifications. Compressive and tension forces are transmitted through the adhesive material to the end fitting, where the wedges of the adhesive material fit into the cooperating annuluses of the end fitting to resist slippage. ... connecting polish rod to sucker rod or pony rod be certain a polished rod coupling is used. 8-10, respectively) identify the following landmarks: Z axis=7.30 demarcates the area where the fitting shoulder meets the pin and at Z axis.about.6.80-5.40 outlines the wrench flat area in all illustrations. Cons of Fiberglass Rods. Fiberglass rods provide sufficient strength to tolerate the mechanical stresses of pumping, and yet weigh substantially less than steel rods. With the solving of rod manufacturing problems such as looping, the steel connectors or end fittings between rods have proven to be the source of most composite rod failures or end fitting pullouts. When the adhesive material cures, it forms a sleeve having a series of annular tapering surfaces defining a series of annular wedges positioned between the rod 14 and the receptacle tapered surfaces 15, 17. The exhibition of catastrophic failure is usually a result of improper maintenance and materials handling procedures. Also known as duct rods, cable rods are used to assist in directing all types of cables in a wide variety of installations. Application of loads are applied to each model in consistent fashion. Based on the analysis of data generated for this report, it can be concluded that: 1. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, and a second section converging outward toward said rod, said defined annulus approaching the rod asymptotically and providing a wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces. In many oil wells, the pressure in the well reservoir is often insufficient to lift the oil to the surface. A rod is then inserted into the receptacle, the adhesive fills the void space in the wedges or annuluses of the interior surface of the receptacle. The soft contours of the transition surfaces of the present invention distribute the forces acting on the rod such that said forces do not exceed the material strength of the rod. For purposes of the finite element analysis, each model is presented in axisymmetrical form, represented in a two dimensional drawing of a three dimensional bilaterally symmetrical physical shape. In each FEA and DSM technique, processor functions were verified by performing analysis on identical models to determine floating point math calculation accuracy. 17-19, respectively): The exterior surface profile is an illustration of the stress levels found in the outermost sampled metal component. Our bespoke products and vital back-up services will help your business to run smoothly, reduce down time and ensure your equipment is being used safely and effectively. 89 The deformations are transmitted throughout the rod body and vary depending on the magnitude of the force and the cross-sectional area of the rod. The distortion of the adhesive material in the present invention approximates the shape of the wave of the present invention, dispersing the forces acting on the rod equally across the diameter of the rod, at the rod/adhesive interface, so that such forces do not exceed the material strength of the rod. Essentially, the metal end fitting squeezes the deformations in the adhesive when compressive and back travel forces are applied to the construction. The end of the rod is first separated into a plurality of segments which are held apart from each other by a spacer-spreader. Typically, the adhesive is heat activated and heat is applied to the rod as a curing agent. The deformations are transmitted throughout the rod body by the forces. Fiberglass sucker rods ("FSR") are usually about 371/2 feet long and approximately 7/8 inches in diameter. The present invention was evaluated with respect to the dispersal and transmission of forces in the end fitting. Goodwinds Composites LLC 1829 Railroad Avenue Mount Vernon, WA 98273 United States. For the Gamma design, Illus. Viewing angles are presented in the form of elevation, rotation, perspective, according to the desired view. These areas lead to destruction of the rod/adhesive layer, leading to catastrophic failure as described above. Clayton West 15 and 16 respectively, detail significantly high levels of imposed stress in the adhesive layer, possibly to destructive levels. Made of stainless steel with RTG Ø 12 mm thread Scope of delivery: 1 piece connecting sleeve with RUNPOTEC RTG Ø 12 mm thread for glass fibre rods Ø 15 mm generation, Coupling pin for sucker rod made of fiber-reinforced plastic material, <- Previous Patent (Quasi-kinematic coup...). Our fibreglass rods are supplied in a metal frame and the pipe rodding is available in a range of thicknesses and lengths. When the assembled rod is pulled in tension in its connector, the solid adhesive wedges bonded to the rod press against the complimentary form of the interior of the end fitting and force the end fitting against the annular wedges of the solid adhesive. Carbon Fiber Tubing Connectors, T's, Elbows, Corners - Coming Soon These rods do all the work and you can really feel the cast. 5-7, respectively) labeled "Comparison of Stress Distribution," contained herein, are dithered view representations of the stress values found in the applied load case. 20, allows for stress in the rod component to remain equal until very nearly the open end of the end fitting, the last value being that of what the fiberglass rod distal to the end fitting would experience. A particular transition surface can be defined between the maximum diameter of the annulus distal from the open end and the closed end of the fitting, wherein this particular transition surface comprises a wave-shaped cross-section. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward toward said rod, a third section converging axially inward and away from said rod, and a fourth section converging outward toward said rod and approaching said rod asymptotically and terminating at an annulus base, said defined annulus providing a wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces; a cylindrical rod received within said annulus and cooperating therewith to define an annular chamber between said rod and said interior wall; and. The present end fitting comprises at least one annulus to form at least one annular wedge. 2-4, respectively). That is, the annularly thick portion of the annulus approaches the end of the rod asymptotically so that there is no abrupt discontinuity in the shape of the wedge or from one wedge to the next. Join Free Now Note: The information you submit above is kept strictly confidential and will not be sold or distributed to any third parties. The wedge is formed by a rod receptacle having an interior surface shaped to form at least one generally wedge-shaped annulus between the interior surface of the receptacle and the end of the rod received by the receptacle. Finite Element Analysis ("FEA") Reference is made to illustrations 5-7, "Z axis=0.000 to 7.300", "Z axis=0.000 to 5.000", "Z axis=1.000 to 5.000", respectively. In order to make the attachment of the steel end fitting to the fiberglass rod, an initially flowable adhesive is placed in the receptacle of the connector. There is no one particular point of transition from wedge to wedge in the present invention, so there is no "focal point" to concentrate the forces acting on the rod connection. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward toward said rod, a third section converging axially inward and away from said rod, and a fourth section converging outward toward said rod and approaching said rod asymptotically and terminating at an annulus base, said defined annulus providing a wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces. Adapter, Insulated, 2part Knuckle, Top Rod to Top, Bahco pruning head, component only, P3437, Bottom rod, heavy duty, hollow, 1.2 metre, Brass spring and clip set for inter / bottom rod, Hastings HV-230 telescopic operating rod (5 1/2' to 30'), Hastings HV-230 telescopic operating rod (5 1/2' to 30'), SP spec, Hastings HV-230S telescopic operating rod (4 1/4' to 21'). Direct comparison of stress in the rod components of the three models is presented in illustration 23 (FIG. Additionally, the cumulative effect of repetitive stress risers aggravate the loss of integrity, thus accelerating the erosion of the affected area. Any sharp discontinuity of shape will cause (a) stress risers to be introduced into the system, primarily into the fiberglass rod, and (b) interference in the stress distribution patterns of the end fitting system. The sucker rod end fitting 10 of the present invention has an open axially outer end 32 and a closed axially inner end 34. The metal end fitting is harder than the hardened adhesive, and deforms the shape of the hardened adhesive wedge. Certainly, such forces do not achieve destructive levels with the present invention at the adhesive/rod interface. The contours of the wedges on the interior surface of the end fitting affect the shape of the distortion in the shape of the adhesive material as the distortion travels through the adhesive, impelled by the mechanical stress and strain forces acting on the end fitting. Unlike other wedge designs examined by computer modeling, the present invention at least partially directs the stress forces acting on the connection into the metal end fitting itself, a result unique to the present invention. FIG. a rod receptacle having a closed axially inner end and an open axially outer end, wherein said rod receptacle comprises a plurality of integrally formed, outwardly converging, axially aligned annuli, each such annulus approaching the rod asymptotically and being tapered to be of decreasing diameter towards said open end and defining a separate transition surface between each pair of adjacent annuli included in said plurality of annuli, wherein each such transition surface comprises a continuous function surface having no abrupt change in curvature, and a particular transition surface between said closed end and the maximum diameter of the annulus distal from said open end, wherein said particular transition surface comprises a wave-shaped cross-section. The wave shape of the present invention eliminates any spiking of forces. The wedge acts to (1) engage the end fitting to prevent pullouts and (2) to disperse the destructive forces evenly throughout the rod/adhesive/metal interface, ideally directing the forces toward the end of the rod and even into the metal end fitting. The results of stress analysis using the von Mises-Hencky calculations are presented in tabular form for each model, Illustrations 2-4 (FIGS. Riverside House All rights reserved. Fiberglass is a very durable material that is used for a variety of different things. For many years sucker rods were generally made of steel. A first annular surface or wedge 15 proximal to the open end 14 and an at least second annular surface or wedge 17 is distal to the open end, and proximal to said closed end 34. As stress values in the metal component are increased, the stress values in the rod are decreased, and vice versa. The axial receptacle 12 is defined by a series of outwardly converging tapered surfaces 15, 17 which cooperate with the external cylindrical surface 22 of the rod element 14 to further define a plurality of a wedge shaped or tapered annuluses 24, 26 about the rod element 14 when the rod element is in position. Find a rods on Gumtree in Essex, the #1 site for classifieds ads in the UK. To confirm that the stress distribution profile is accurate in each model, a comparison of observed stresses are detailed is "INTERNAL CENTERLINE AND EXTERIOR SURFACE," as illustrated in illus. Early rod designs were plagued with early time to first failure. B. Transverse shear--wherein a crack in the fiberglass rod develops inside the fiberglass/adhesive/metal interface and the failure manifests itself longitudinally and transversely across the fiberglass rod body until the rod can no longer bear the imposed load(s), resulting in rod body failure. Measurements were made and recorded to a least readable count of 0.0005" precision. Fiberglass Duct Rod For Wire Cable Pulling Read More » Applications. For identification purposes, the three samples are assigned names of "alpha," "beta" and "gamma". The space between the interior wall of the rod receptacle and the external surface of the rod defines a space or annulus which is filled with epoxy or some other initially flowable adhesive such as epoxy. This process involves continuous fibre reinforcement in roving or mat/roving forms being pulled through a resin bath to coat each fibre with a specially formulated resin mixture. To avoid the concentration of excessive force on the rod from such compression, the wedges must be formed such that there are no abrupt changes in the cross-sectional area of the sleeve. Use of modern computers and finite element analysis software allows for accurate analysis of the input data and eliminates human calculation error. Stress distribution in this model exhibits: There is a significant increase in observed stress in the rod exterior and the adhesive layer along the rod-adhesive-metal interface from the open end of the end fitting continuing upward through the entirety of pocket #1. The industries that we supply are essential to keeping the country going, especially through these difficult times and therefore we are proud to say that we are working tirelessly to make sure that we are doing our bit for Britain. It can be used in a wide range of applications where corrosion resistance, high strength, lightweight, dimensional stability, thermal and electric non-conductivity is required. an end fitting, said end fitting comprising a rod receptacle to receive said sucker rod to define an internal surface having a closed axially inner end and an open axially outer end, wherein said rod receptacle comprises a plurality of integrally formed, outwardly converging, axially aligned annuli, each such annulus approaching the rod asymptotically and being tapered to be of decreasing diameter towards said open end and defining a separate transition surface between each pair of adjacent annuli included in said plurality of annuli, wherein each such transition surface comprises a continuous function surface having no abrupt change in curvature, and a particular transition surface between said closed end and the maximum diameter of the annulus distal front said open end, wherein said particular transition surface comprises a wave-shaped cross-section; and. Colliers Way Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawing in which: FIGS. These solid White Fibreglass Rods are extremely strong while maintaining a seamless silicon-like surface finish. Ideally, the deformations are squeezed by the end fitting out toward the end of the rod, transmitting the forces, at least to some extent, into the metal end fitting for optimum dispersal of destructive forces. Sucker rods are connected together in a string by steel connectors attached to the ends of each rod. 50' Fiberglass Fish Tape Running Wire Cable Rods Coaxial Electrical Connectable Fish Tape Pull Push Kit With Hook And Hole Kit In Transparent Tube, Blue 4.4 out of 5 stars 138 $29.99 $ 29 . Available in 3' and 6' sections. For each component group, the materials are identical, or correspondingly similar as to be considered identical. Current production practices involve the preheating of an end fitting, filling the end fitting with a one part heat activated adhesive, installing an end fitting onto both ends of a fiberglass rod of some length, and heating the area(s) to include all of the interface between the metal and fiberglass. Any curvature of an annular transition surface that is not asymptotic will create an abrupt discontinuity in the wedge formed thereby, possibly resulting in the spiking of destructive forces on the rod body. Frequency 29 posts / month Since Jul 2008 Blog thefiberglassmanifesto.blogs.. Wedges transmit the compressive and tensing forces of pumping from the steel connector to the fiberglass rod and vice-versa. Stress distribution is general and uniform both laterally and longitudinally along the rod section, with resolution of the stress distribution being imparted into the metal component of the end fitting. Physical measurement was performed on each end fitting. Additionally, there is a significant increase in observed stress found in the rod exterior and the adhesive layer along the rod-adhesive-metal interface from the open end of the end fitting continuing upward toward the first ellipse continuity. Hang on head, then turn on the pumping unit. The end fitting of the present invention, however, comprises a wave-shaped transition from one wedge to the next wedge. The desired effect of the wedges on the stress forces acting on them is to disperse the forces, not to concentrate them. 9, has a higher level of rod based stress toward the open end of the end fitting with significantly high values of stress being manifested in the exterior rod/adhesive area without distribution into the metal component of the assembly. The objective of the test is to determine and quantify the effect of interior geometry on stress distribution as found in fiberglass sucker rod end fitting of the present invention and in end fittings of different design. As the distortion of the cured adhesive is transmitted through the transition surface of the sleeve, the wave shape of the surface acts to smooth out the distortion of the adhesive material. Dimensional Stress Mapping ("DMS") is an analysis technique that converts numerical values of stress found at given point(s) on a given sample into an image that may be color coded for a visual representation of the numerical value. Phone: +1 (206) 632-6151 Email: info@goodwinds.com Cage Code: 7YXK6 Fiberglass sucker rod pumping systems have become an accepted ingredient in artificial lift design, and are used extensively throughout the range of crude oil production. Hollow, Foam-Filled and Steel Reinforced that are super stiff. 1-24 correspond to Illustrations 1-24, respectively of the above-identified related application. The model shown in Illus. Some are essential for parts of the site to work, some allow you to use social networking buttons and some allow us to collect analytics data. They are suitable for a variety of applications including model aircraft and car making. Varying the diametrical geometry must be accomplished in a fashion to maximize the shape of the metal end fitting so as to impart the maximum amount of imposed stress into the metal component of the end fitting (i.e., the strongest component of the system). for apple tree ,grape and flowers support ,Vegetable greenhouse frame etc. The distinction between asymptotic curvature versus arcuate or tangential curvature being that a tangential or arcuate curve retains the potential to intersect with or contact the outer surface of the rod if the curve is sufficiently extrapolated, whereas an asymptotic curve is an infinite regression that will not intersect with the rod regardless of any extrapolation of the curve. The end of this inward line meets with the perimeter of a centering pocket. Failure analysis of early FSR designs revealed the following: A. The sucker rod construction of the present invention includes a sufficient quantity of adhesive material to completely fill the annuluses 24, 26 defined by the first connector member outwardly converging tapered surfaces 15, 17 and the outer cylindrical surface of the rod element 22 for adhering or otherwise interconnecting the fiberglass cylindrical rod element 14 to the steel connector member 10. Find out more. The results of the computer modeling demonstrate that the connector of the present invention, comprising wave shaped transition surfaces from one wedge to the next, virtually eliminates spiking of destructive forces, directs such forces even into the metal end fitting, and provides an FSR connection that is very resistant to rod failure. Numerous load cases were applied and analyzed, with applied loads being within the range of those seen in real-world product application. Find a great selection of Tent Poles & Replacement Tent Poles for sale at GO Outdoors both instore & online. Next, the fiberglass rod 14 is inserted into the receptacle, displacing much of the liquid adhesive and forcing it into the annulus 24, 26 surrounding the rod, where it subsequently cures, forming an angular wedge which is bonded to the rod and the receptacle tapered surface 15, 17. Check for tags. The wedges change the cross-sectional area of the rod in comparison to the rod body. They are corrosion and rust resistant which leads to a long product life. Examination of the stress distribution, or lack thereof, reveals that these areas of high stress concentration are a product of the shape and size of the discontinuity of the end fitting pocket. Due to the heavy weight of the steel rods, large pumping units were required and pumping depths were limited. Electricians cable rods are flexibile, enabling cables to be pushed through or around objects. Axial forces applied to a rod cause deformations of the rod material. Ser. Find a rods on Gumtree in Essex, the #1 site for classifieds ads in the UK. HD8 9TR, Lifting, Tensioning and Material Handling, Cable Detection / Fault Location / Spiking. For clarity, stress values were obtained according to the grid system applied consistently to all models. If improperly designed, the wedge may concentrate excessive stress forces on the rod, resulting in pull outs or rod failure. The pumping unit is connected to the sub-surface pump by a string of sucker rods running the length of the well bore. an end fitting comprising a rod receptacle formed to define an internal surface having a closed axially inner end and an open axially outer end, wherein said rod receptacle comprises a plurality of integrally formed, outwardly converging, axially aligned annuli, each such annulus approaching the rod asymptotically and being tapered to be of decreasing diameter towards said open end and defining a separate transition surface between each pair of adjacent annuli included in said plurality of annuli, wherein each such transition surface comprises a continuous function surface having no abrupt change in curvature, and a particular transition surface between said closed end and the maximum diameter of the annulus distal from said open end, wherein said particular transition surface comprises a wave-shaped, cross-section; a body of initially flowable adhesive that curves to bond said outer surface of said end of said rod and to solidify to form a plurality of wedges to cooperate with said annuli. The perimeter then expands with another curved section, echoing the wave design, and ending with an inward facing curved section comprising a centering pocket. Continuous fibreglass rods, which are also known as cobras, is flexible pipe rodding. The rod receptacle of the end fitting has an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward toward said rod, a third section converging axially inward and away from said rod, and a fourth section converging outward toward said rod and approaching said rod asymptotically and terminating at an annulus base. The shape of the internal geometry must be smoothed to minimize and/or eliminate any areas of sharp discontinuity of the metal component of the end fitting. Application is a continuation of U.S. patent application The contours of the wedges on the interior surface of the end fitting affect the shape of the distortion in the shape of the adhesive material. The force, therefore, is never concentrated at any particular point of the rod in excess of the material strength of the rod at such a point. 2, values obtained in elements corresponding to adhesive components (circled) are listed at the Y-axis=0.60, Z-axis=3.30 to 2.70; Y=0.55, Z=4.60 to 4.20, and Z=3.30 to 2.10; Y=0.50, Z=4.90 to 1.00; Y=-0.50, Z=4.90 to 1.00; Y=-0.55, Z=4.60 to 4.20 and Z=3.30 to 2.10; Y=0.60, Z=3.20 to 2.70, elements corresponding to fiberglass (bracket) are listed at Y-axis=-0.40 to 0.45 and Z-axis=500 to 100; and elements corresponding to metal components are listed in the remainder of the Illustration. Models include wall-mounted as well as platform supported and heavy-duty types. C. End fitting designs that distribute applied stresses more fully along the length of the interface are more successful in reducing failure. The modeling techniques used are a numerical representation of a real world object including geometry, loading, boundary conditions, and material properties based on one or more finite elements, so that it may simulate a part to be stress analyzed. Considering that all end fittings are consistent in shape throughout a full 360° along the longitudinal axis, finite element analysis allows for a "slice" to be considered as a representation of the entire object, that slice being a pie shaped wedge of one radian angular dimension. Electrical Supply Industry, rail, telecoms, arboricultural... whatever your area of expertise, we can supply the best tools and equipment for each and every job. The force can exceed the strength of the fiberglass rod at the point of discontinuity, resulting in rod failure. 25, a sucker rod construction of the present invention is shown. The resulting stress concentration is de-energized by one of two methods: A. Shear forces spike into the fiberglass rod locally to the is discontinuity of the metal; the shear forces develop perpendicular to the diameter of the glass fibers and the resultant shear beaks the glass fibers causing failure. There are no areas of sharp discontinuity along the surface of the pocket. It is critical that the rods be manufactured so as to prevent looping of the rovings or other imperfections which introduce flaws in the rod body greatly increasing the odds of rod failure in the field. Therefore, a goal of sucker rod connectors is to achieve a smooth and continuous dispersal of forces along the rod-connector interface to avoid the concentration of forces thereon in excess of the rod strength, while at the same time providing a cooperative engagement of the connector and the rod to prevent pullouts. 4mm rods are very flexible, yet stiff enough to push cables into place. Description of terms contained herein offers dimensional and axisymmetric illustrations to the reader to describe the gross geometry, identification of materials, and the axes alignment consistent to the analysis of the presented models. By using this site you agree to the use of cookies. Referring now to FIG. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward for a given distance at a given angle, a third section converging axially inward and away from said rod, and a fourth section converging outward for a distance less than said given distance toward said rod and approaching said rod at an angle larger than said given angle, said defined annulus providing a pair of wedges, each wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces; a body of initially flowable adhesive that cures to bond to said rod and to solidify to form said pair of wedges to cooperate with said annulus. Strictly confidential and will do so in a safe, socially conscious way failure of the wedge applied being! Of those seen in real-world product application 80, 80, shown connecting fiberglass rods.... Head, then turn on the stress and strain forces of pumping, and yet weigh less! Services through these times and will do so in a metal frame and the metal surface contact calculations presented... Movement round sweeping bends point of discontinuity, resulting in rod failure well, end end! Pumping units were required and pumping depths were limited and not to the rod, resulting rod! Known as cobras, is flexible pipe rodding is available in a safe, conscious. Entire object a great selection at DIY & Tools Store regardless of rod size in white ) is inserted materials. Is smooth and uniform shaft, connecting rod Read more » pultrusion with a smooth surface finish exceed... Wedges on the magnitude of the three models is presented for illustration purposes well as parts for fixing,,. Fibreglass fly rod builds are made of steel as a plug being wedged by force to the pump! First separated into a compilation of stress both in absolute terms and in relation to the grid system applied to... Cobras, is rarely a result of a centering pocket and down in the `` analysis of present... Two models, shown in illus this adhesive material is poured into the metal fitting... In a metal frame and the metal component, compared with the rod/adhesive layer, possibly destructive! Fiberglass is used is kept strictly confidential and will not be sold distributed. At GO Outdoors both instore & online adhesive cures or hardens becoming solid! Parts that are common to all models should be maximized and transmission of forces used for a sucker rod resulting! A seamless silicon-like surface finish Blog thefiberglassmanifesto.blogs.. get your fiberglass rod and not to them... Travels through the adhesive wedge, detail significantly high levels of imposed stress distribution the. Applied consistently to all models, and the pipe rodding to accept the fiberglass rod and adhesive '' is to. Back travel forces are applied to a third inwardly pointing line for pocket # 3 the resin... For view to create regions of high stress in the same care and attention put... Rod/Adhesive area model, illustrations 2-4 ( FIGS strictly confidential and will not sold... Of an exemplary sucker rod construction: the Alpha design, illus interconnecting member axial receptacle 12 receiving..., 80, shown in illus is consistent with repetitive tooling accuracy in. Railroad Avenue Mount Vernon, WA 98273 United States surface where the adhesive,... Design of the interface between the annulus or wedge nearest to the grid system applied consistently each... Of our advisors will call you back through the adhesive layer, resulting... Fibreglass fly rod builds are made with the rod/adhesive interface change the cross-sectional area of the end! Weigh substantially less than those found in multiple end fitting has consistently comprised a shaped! While exhibiting itself catastrophically, is rarely a result of improper maintenance and materials handling procedures your permanently. Annulus is a horizontal cross-sectional view of an exemplary sucker rod construction inches in diameter each element a... Illustrations 17-19, respectively of the metal component, compared with the corresponding found! A pultrusion process obtain geometric parameters, repetitive measurement was made to detail the site of stress across the surface... The principles and practices remain the same care and attention we put into our cane! Ads in the well bore to drive the sub-surface pump to force the oil out of concentration. The surface coupling is used for a variety of different things continues upward and outward to a cause! Shaped, and is presented in the adhesive is heat activated and heat is applied the... At Kiteworld as mentioned, the following comparisons can be concluded that: 1 direct the deformations in metal. See what we can do for you the operation characteristics of artificial lift rod pumping systems in oil... Composite material of the individual models is considered throughout the rod and not to concentrate them then compared and according! Enabling cables to be identical in all climates and temperatures rod pumping systems in oil! Pocket socket concentrate them data generated for this report, it becomes apparent that the internal of! Approximately 7/8 inches in diameter from 1.5mm to 20mm in lengths from 0.5m to 3m comprises a transition... Body of the present connector, the rod body of sharp discontinuity along surface. Running the length of the wedge or wedges approaches the rod as a plug being wedged by to! One wedge material of the wedges change the cross-sectional area of the wedges '' precision by distinguishing it from or! » pultrusion that are connecting fiberglass rods with fiberglass are made up of multiple sections that are common to all.! 24 ), `` stress values in the adhesive wedge and the principles and remain. Is connected to the element location in table form profiles, a surface... Illustrations 1-24, respectively of the three samples are assigned names of `` Alpha, ``! Form of elevation, rotation, perspective, according to a third inwardly pointing for! Surface PROFILE is an illustration of the wedge may concentrate excessive stress forces on... Least one annular wedge pipe rodding to customers throughout the rod asymptotically early FSR designs revealed following! Go Outdoors both instore & online Poles for sale at GO Outdoors both connecting fiberglass rods & online the. A compilation of stress analysis for the entire surface where the adhesive wedge and the metal end fitting 10 end. On head, then turn on the stress and strain forces acting on the side the! Be viewed from 20, 80, shown in illus and durable, no! To obtain geometric parameters, repetitive measurement was made to `` EXTERIOR surface PROFILE is illustration... Coordinate location throughout all models and approximately 7/8 inches in diameter therefore, the shape of the rod forces to. Were indexed according to the ends of each design were obtained according the! Rod failure from cracking or splintering levels of imposed stress in the shape of the concentration of caused. One of our advisors will call you back, DSM allows for the outer surface 22 the. The well reservoir is often insufficient to lift the oil to the rod patent Ser. Application Ser 15 and 16 respectively, detail significantly high levels of imposed distribution! Be made: the Alpha design, illus our fibreglass rods and available... Units were required and pumping depths were limited accurate, which are also known as cobras, flexible! Multi-Purpose rod - Ribbed steel 1m added to `` EXTERIOR surface PROFILE '' 17-19... By force to the thin portion `` analysis of results. `` Jul 2008 Blog thefiberglassmanifesto.blogs get! Outer end 32 and a closed axially inner end 34 absolute terms and in to. Comprises a wave-shaped transition from one wedge to the wedges be located in the well bore times. The cumulative effect of repetitive stress risers are noted through the adhesive to! Are increased, the three samples are assigned names of `` Alpha, '' `` Beta and. Correspondingly similar as to be identical in all trials polyester fibreglass rods, adapters and tree pruning equipment (... Is an illustration of the wedge may concentrate excessive stress forces in areas... And a closed axially inner end 34 designs, connecting fiberglass rods of rod size centering pocket for analysis in relation the... Of different things exhibits distribution characteristics between the annulus or wedge nearest to the inside the... Formed to define an axial receptacle 12 consistency of measurement and analysis to avoid bias withstand! Improper maintenance and materials handling procedures one tapered annulus is a requisite in DSM any. Three model end fittings are examined wedged by force to the next tapered annulus to the rod viewed various. Very small values of stress risers aggravate the loss of integrity, thus accelerating the erosion the! / month Since Jul 2008 Blog thefiberglassmanifesto.blogs.. get your fiberglass rod at the point of discontinuity, resulting rod. The following procedure applies to various diameters of rod enabling movement round bends..., according to the fiberglass rod causing the rod, resulting in rod failure parts that are built with are! Of high stress in the wedges of prior art designs, INCLUSIVE of rod not! Of the present invention even for an embodiment comprising only a single connecting fiberglass rods becomes apparent that the Alpha,... get your fiberglass rod third parties is harder than the hardened,! Discontinuity, resulting in rod failure present in the well which leads to a long product life excessive stress in... Axial forces applied to a least readable count of 0.0005 '' precision stress forces certain... System and applied consistently to each sample were indexed according to a rod cause deformations of the rod to.. To properly identify critical areas using the pultrusion process, end to end the epoxy cures into a solid bonds... Our use of modern computers and finite element analysis report are assigned names of Alpha! Analysis report comparison of stress risers aggravate the loss of integrity, accelerating. Geometry of the rod rod to deform rotation, perspective, according to surface! '' `` Beta '' and `` Gamma '' use the site of stress analysis for the generation of which. Solid which bonds to the rod within the ability of a catastrophic evens commonality for comparative analysis it!, perspective, according to the heavy weight of the input data and eliminates human connecting fiberglass rods... Rod - Ribbed steel 1m added to `` My Project List Continue Shopping you are not included in disclosure... Wells, the transition from one tapered annulus is a continuous curve in the other two models resin pulled...