Performance detection equipment for glass fiber reinforced plastic pultrusion protective sleeve

Abstract

The invention relates to the technical field of glass fiber reinforced plastic pultrusion protective sleeves, in particular to performance detection equipment for a glass fiber reinforced plastic pultrusion protective sleeve, which comprises a detection pool, an annular air bag and the like, a plurality of liquid storage cavities are formed in the detection pool; each liquid storage cavity is communicated with a liquid outlet pipe; each liquid storage cavity is communicated with a liquid injection pipe; every two adjacent liquid storage cavities are communicated through a through hole; two annular air bags are respectively arranged on two sides in each through hole; and each annular air bag is in contact with the inner wall surface of the through hole. The multiple liquid storage cavities are formed in the detection pool, different corrosive liquids are injected into the liquid storage cavities, the glass fiber reinforced plastic pultrusion protection sleeve is immersed in the corrosive liquids, and the glass fiber reinforced plastic pultrusion protection sleeve is soaked in the different corrosive liquids in the liquid storage cavities; and the corrosion resistance of the glass fiber reinforced plastic pultrusion protective sleeve in various corrosion environments can be simultaneously evaluated in one test by using a single glass fiber reinforced plastic pultrusion protective sleeve.

Description

Technical Field

[0001] This invention relates to the field of fiberglass pultruded protective sleeve technology, and in particular to a performance testing device for fiberglass pultruded protective sleeves. Background Technology

[0002] Fiberglass pultruded protective sleeves are widely used in petrochemical, marine engineering, and power cable protection fields due to their excellent strength-to-weight ratio, corrosion resistance, and insulation properties. Their long-term corrosion resistance is a key indicator of their service safety and lifespan, requiring thorough verification testing before practical application. Traditional corrosion testing methods typically involve immersing multiple independent samples of pultruded protective sleeves in different corrosive liquids (such as acid, alkali, and salt solutions) to simulate a single possible environment. This method has significant drawbacks: firstly, it requires preparing a large number of samples, and frequent sample changes and handling of various corrosive liquids increase operational complexity and potential safety risks; secondly, individual differences between different samples can affect the comparability of test results. Summary of the Invention

[0003] To overcome the shortcomings of traditional corrosion testing methods, which require the preparation of a large number of samples, frequent sample replacement, and handling of various corrosive liquids, increasing operational complexity and potential safety risks; in addition, individual differences between different samples affect the cross-comparability of test results, this invention provides a performance testing device for fiberglass pultruded protective sleeves.

[0004] The technical implementation of the present invention is as follows: a performance testing device for fiberglass pultruded protective sleeves, comprising a testing pool; further comprising an annular airbag; the testing pool is provided with a plurality of liquid storage chambers; each liquid storage chamber is connected to an outlet pipe; each liquid storage chamber is connected to an injection pipe; adjacent two liquid storage chambers are connected through a through hole; two annular airbags are respectively provided on both sides of each through hole; each annular airbag is in contact with the inner wall surface of the through hole.

[0005] Optionally, the outer surface of the annular airbag is coated with a corrosion-resistant coating.

[0006] Optionally, it also includes a through tube; the two annular airbags do not contact each other; each through hole is connected to a through tube, and the through tubes are located between two adjacent annular airbags.

[0007] Optionally, it also includes a cover plate; the test pool is detachably connected to a cover plate, which is used to prevent corrosive liquid from splashing into the outside and contaminating the working environment when the test liquid is injected.

[0008] Optionally, it also includes a columnar airbag; the fiberglass pultruded protective sleeve is filled with a columnar airbag, which is used to prevent corrosive liquid from entering the inside of the fiberglass pultruded protective sleeve and affecting the test results of the other test sections.

[0009] Optionally, it also includes a lifting frame, lifting rings, lifting ropes, belts, and slide bars; a lifting frame is provided on the side of the testing pool and suspended by a crane hook; a lifting ring is hung at each end of the lifting frame; two lifting ropes are fixed to each lifting ring, and the two lifting ropes on the same lifting ring are symmetrically arranged; the lower ends of the two lifting ropes on the same lifting ring are connected to a belt.

[0010] Optionally, it also includes a slide rod and a mounting plate; each end of the two belts is fixedly connected to a mounting plate; the two mounting plates at the same end are slidably connected to a slide rod; the slide rod is provided with a pin hole, and the mounting plate is provided with a pin.

[0011] Optionally, it also includes an electric push rod, a connecting plate, and a hoop; the electric push rod is fixedly connected to the middle of the lifting frame; the connecting plate is fixedly connected to the telescopic end of the electric push rod; a hoop is fixedly connected to each end of the connecting plate; and the two lifting ropes on the same side are located in a hoop.

[0012] Optionally, a battery is installed inside the lifting frame to directly power the electric actuator.

[0013] Optionally, an anti-slip pad is provided on the contact surface between the belt and the fiberglass pultruded protective sleeve.

[0014] Beneficial effects: 1. This invention opens multiple liquid storage chambers in the test pool, injects different corrosive liquids into each liquid storage chamber, and makes the corrosive liquids immerse the fiberglass pultruded protective sleeve. The fiberglass pultruded protective sleeve is immersed in different corrosive liquids in each liquid storage chamber, thus simulating the environment that the fiberglass pultruded protective sleeve would encounter in actual application scenarios; using a single fiberglass pultruded protective sleeve, its corrosion resistance performance under multiple corrosive environments can be evaluated simultaneously in one test, which significantly improves the testing efficiency and is convenient and efficient to operate.

[0015] 2. This invention pre-fills the fiberglass pultruded protective sleeve with a columnar air bladder having an anti-corrosion coating, and then controls an external air pump to ventilate the columnar air bladder, causing it to expand and contact the inner wall of the fiberglass pultruded protective sleeve. In this way, if cracks appear in the fiberglass pultruded protective sleeve later, the corrosive liquid will be blocked by the columnar air bladder, preventing the corrosive liquid from entering the inside of the fiberglass pultruded protective sleeve or greatly hindering the flow of the corrosive liquid, thus avoiding affecting the test results of other test sections. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the performance testing equipment for fiberglass pultruded protective sleeves according to the present invention; Figure 2 This is a three-dimensional structural diagram of the testing pool of the performance testing equipment for fiberglass pultruded protective sleeves of the present invention; Figure 3This is a three-dimensional structural diagram of the annular airbag and through-tube of the performance testing equipment for fiberglass pultruded protective sleeves of the present invention. Figure 4 This is a three-dimensional structural diagram of the columnar airbag in the performance testing equipment for fiberglass pultruded protective sleeves of the present invention. Figure 5 This is a three-dimensional structural diagram of the lifting frame, lifting ring, lifting rope, belt and slide bar of the performance testing equipment for fiberglass pultruded protective sleeves of the present invention; Figure 6 This is a three-dimensional structural diagram of the slide bar and mounting plate of the performance testing equipment for fiberglass pultruded protective sleeves of the present invention.

[0017] In the diagram: 1-Detection pool, 101-Liquid storage chamber, 102-Liquid outlet pipe, 103-Through hole, 104-Liquid injection pipe, 2-Annular airbag, 3-Pass pipe, 4-Cover plate, 5-Columnar airbag, 6-Fiberglass pultruded protective sleeve, 7-Crane hook, 21-Lifting frame, 22-Lifting ring, 23-Lifting rope, 24-Belt, 25-Slide rod, 26-Mounting plate, 31-Electric push rod, 32-Connecting plate, 33-Clamping ring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: A performance testing device for fiberglass pultruded protective sleeves, such as... Figures 1-4 As shown, it includes a detection pool 1; It also includes an annular airbag 2; the detection pool 1 is provided with four liquid storage chambers 101; each liquid storage chamber 101 is connected to a liquid outlet pipe 102; each liquid storage chamber 101 is connected to a liquid injection pipe 104; two adjacent liquid storage chambers 101 are connected by a through hole 103; two annular airbags 2 are respectively provided on both sides of each through hole 103; each annular airbag 2 is in contact with the inner wall of the through hole 103.

[0020] To extend its service life, the outer surface of the annular airbag 2 is coated with a corrosion-resistant coating, such as a PFA (perfluoroalkoxyalkane) coating.

[0021] It also includes a through tube 3; the two annular airbags 2 do not contact each other; each through hole 103 is connected to a through tube 3, and the through tubes 3 are located between two adjacent annular airbags 2.

[0022] It also includes a cover plate 4; the cover plate 4 is detachably connected to the detection pool 1.

[0023] It also includes a columnar airbag 5; the fiberglass pultruded protective sleeve 6 is filled with a columnar airbag 5.

[0024] Before use, connect the annular airbag 2 to an external air pump. Connect the injection pipe 104 to the outlet of the liquid pump via a hose, and connect the outlet pipe 102 to the outlet of the liquid pump via a hose. Each outlet pipe 102 is connected to one liquid pump, and the other outlet of each liquid pump is connected to the corrosion liquid storage container via a hose. During use, manually insert the fiberglass pultruded protective sleeve 6 through all the through holes 103, and control the air pump to inflate all the annular airbags 2. The annular airbags 2 expand inward and contact the fiberglass pultruded protective sleeve 6, so that the through holes 103 on both sides of each liquid storage chamber 101 are sealed. Then, start the external liquid pump. The corrosive liquid in the corrosion liquid storage tank is injected into the storage chamber 101 through the injection pipe 104 above, so that each storage chamber 101 is filled with a different corrosive liquid for testing (such as acidic liquid or alkaline liquid), and the corrosive liquid immerses the fiberglass pultruded protective sleeve 6. The fiberglass pultruded protective sleeve 6 is immersed in different corrosive liquids in each storage chamber 101, thus simulating the environment that the fiberglass pultruded protective sleeve 6 would encounter in actual application scenarios. After immersion, the external liquid pump is started, and the corrosive liquid in the storage chamber 101 is pumped back to the corrosion liquid storage tank through the liquid outlet pipe 102. Then, the air pump is controlled. The gas inside the annular airbag 2 is evacuated, causing it to contract and return to its original shape, no longer clamping the fiberglass pultruded protective sleeve 6. The sleeve 6 is then removed and transferred to the testing station for inspection. The sleeve 6 is observed for damage (such as corrosion, pitting, discoloration, etc.). This allows for the simultaneous evaluation of corrosion resistance under various corrosive environments using a single fiberglass pultruded protective sleeve 6 in a single test, significantly improving testing efficiency and providing convenient and efficient operation. Compared to existing technologies, it can also be fixed by interlocking two semi-rings. The fiberglass pultruded protective sleeve 6 is designed such that a lower half-ring is installed on the test pool 1, and the fiberglass pultruded protective sleeve 6 is then lowered into the lower half-ring from top to bottom. The upper half-ring is then fastened and locked to fix the fiberglass pultruded protective sleeve 6 and isolate it from different test environments. The invention uses an annular airbag 2 to clamp the fiberglass pultruded protective sleeve 6 because the annular airbag 2 has a high degree of integration, minimal gaps after achieving its fixing effect, and is less prone to leakage accidents. It also provides a stronger sealing effect and eliminates the need for manual movement to the test pool 1 for half-ring locking, thus ensuring greater operational safety.

[0025] After the air pump draws out the gas from the annular airbag 2, causing the annular airbag 2 to contract and recover, and no longer clamp the fiberglass pultruded protective sleeve 6, the residual corrosive liquid on the annular airbag 2 will gradually flow down. In order to prevent the corrosive liquid of two adjacent annular airbags 2 from mixing together and eventually flowing into the liquid storage chamber 101 where the other is located, thus causing the corrosive liquid in the liquid storage chamber 101 to be contaminated, the two annular airbags 2 are separated from each other and a certain distance is maintained between them. The corrosive liquid between the two annular airbags 2 will flow into the through hole 103 and eventually into the through pipe 3. A collection container is placed below the through pipe 3 in advance, and the corrosive liquid will flow into the collection container, thereby recycling the corrosive liquid and avoiding the mixing and contamination of different types of corrosive liquid.

[0026] When the FRP pultruded protective sleeve 6 is subjected to corrosion testing, if it is severely corroded, cracks may appear. Corrosive liquid may enter the interior of the FRP pultruded protective sleeve 6 through these cracks and then spread to other test sections, potentially affecting the test results of those sections. Therefore, a columnar air bladder 5 with an anti-corrosion coating is pre-filled into the FRP pultruded protective sleeve 6. An external air pump is then used to inflate the columnar air bladder 5, causing it to expand and contact the inner wall of the FRP pultruded protective sleeve 6. In this way, if cracks subsequently appear in the FRP pultruded protective sleeve 6, the corrosive liquid will be blocked by the columnar air bladder 5, preventing it from entering the interior of the FRP pultruded protective sleeve 6 or significantly hindering its flow, thus avoiding affecting the test results of other test sections.

[0027] Example 2: Based on Example 1, as follows Figures 4-6 As shown, it also includes a hoisting frame 21, a lifting ring 22, a lifting rope 23, a belt 24, and a sliding rod 25; a hoisting frame 21 suspended by a crane hook 7 is provided on the side of the testing pool 1; a lifting ring 22 is hung on the left and right ends of the hoisting frame 21 respectively; two lifting ropes 23 are fixed to each lifting ring 22, and the two lifting ropes 23 on the same lifting ring 22 are arranged symmetrically front and back; the lower ends of the two lifting ropes 23 on the same lifting ring 22 are connected to a belt 24.

[0028] It also includes a slide rod 25 and a mounting plate 26; each end of the two belts 24 is fixedly connected to a mounting plate 26; the two mounting plates 26 at the same end are slidably connected to a slide rod 25; the slide rod 25 is provided with a pin hole, and the mounting plate 26 is provided with a pin.

[0029] It also includes an electric push rod 31, a connecting plate 32, and a hoop 33; the electric push rod 31 is fixedly connected to the middle of the hoisting frame 21; the connecting plate 32 is fixedly connected to the telescopic end of the electric push rod 31; a hoop 33 is welded to the left and right ends of the connecting plate 32 respectively; the two hoisting ropes 23 on the same side are located in a hoop 33.

[0030] To prevent the power wires supplying the electric actuator 31 from being exposed, a battery is installed inside the hoisting frame 21 to directly power the electric actuator 31.

[0031] To prevent slippage between the belt 24 and the fiberglass pultruded protective sleeve 6, an anti-slip pad is provided on the contact surface between the belt 24 and the fiberglass pultruded protective sleeve 6.

[0032] The manual installation of the fiberglass pultruded protective sleeve 6 and its penetration through all the through holes 103 is quite difficult, especially when inserting the wide and long fiberglass pultruded protective sleeve 6 into the through holes 103. Therefore, two flexible straps are typically used to support the fiberglass pultruded protective sleeve 6, arranged in a V-shape (this V-shape greatly enhances stability and prevents the fiberglass pultruded protective sleeve 6 from rotating or swaying). Their upper ends are hooked onto the crane hook 7, and the crane moves the fiberglass pultruded protective sleeve 6. Two belts 24 support the middle of the fiberglass pultruded protective sleeve 6, and their upper ends are hooked onto the lifting frame 21 via lifting rings 22 and lifting ropes 23. The lifting frame 21 is then hooked onto the crane hook 7. The height of the fiberglass pultruded protective sleeve 6 is then controlled by the crane, allowing the fiberglass to move smoothly. The steel pultruded protective sleeve 6 is positioned directly opposite the through hole 103. Then, a crane is used to move the fiberglass pultruded protective sleeve 6 into the through hole 103. When the belt 24 is close to the side wall of the test pool 1, the crane controls the belt 24 to move downward, causing the belt 24 to separate from the fiberglass pultruded protective sleeve 6. The two are no longer tightly attached. At this point, the fiberglass pultruded protective sleeve 6 descends and contacts and is supported by the annular airbag 2 inside the through hole 103. Subsequently, the crane needs to move the belt 24 away from the through hole 103 to the area where the fiberglass pultruded protective sleeve 6 has not yet entered the through hole 103. Then, the belt 24 is moved upward to lift the fiberglass pultruded protective sleeve 6 again. Then, the fiberglass pultruded protective sleeve 6 is lifted towards the through hole 103 again. This process is repeated until the entire fiberglass pultruded protective sleeve 6 is sent into the through hole 103.

[0033] During this process, due to the relatively long length of the FRP pultruded protective sleeve 6, to improve the stability of the conveying, in the initial conveying state, the two belts 24 will inevitably support the middle area of ​​the FRP pultruded protective sleeve 6, for example, near the two trisection points of the tube body. This causes the length of the FRP pultruded protective sleeve 6 inside the testing pool 1 to be shorter than the length outside the testing pool 1 when the belts 24 separate from the FRP pultruded protective sleeve 6 initially. Therefore, the FRP pultruded protective sleeve 6 will tilt outwards due to its center of gravity being on the outside, resulting in a side-tipping phenomenon, which is not conducive to the subsequent movement of the FRP pultruded protective sleeve 6. Therefore, before the belts 24 are lowered by the crane to separate from the FRP pultruded protective sleeve 6, the annular airbag 2 needs to play an auxiliary role. The external air pump is controlled to inflate the annular airbag 2 in contact with the FRP pultruded protective sleeve 6, so that the annular airbag 2 expands and clamps the FRP. The protective sleeve 6 is pultruded to prevent it from tipping over. Afterwards, the belt 24 is moved to a new position and then lifted to re-support the pultruded protective sleeve 6. The air pump is then used to extract the gas from the annular airbag 2, causing it to contract and no longer clamp the pultruded protective sleeve 6, but still remain in contact with it. At this point, the annular airbag 2 acts as a guide for the pultruded protective sleeve 6, aligning it with the other through holes 103. Therefore, in this entire process, the worker only needs to guide the pultruded protective sleeve 6 once it enters the first through hole 103; subsequent guidance can be achieved automatically by the annular airbag 2 without worker intervention. This process is repeated until the pultruded protective sleeve 6 completely penetrates all through holes 103, entering the testing state.

[0034] After belt 24 descends and separates from the FRP pultruded protective sleeve 6, without other influences, due to gravity, the left lifting rope 23 and belt 24 will come into contact with, or even overlap with, the right lifting rope 23 and belt 24. This results in the FRP pultruded protective sleeve 6 still having a relatively sufficient length outside the testing pool 1 when belt 24 lifts it again for the second and third time. The two belts 24 being too close together leads to poor stability and affects the hoisting. Although workers can pull the two lifting ropes 23 and belts 24 away from each other and release them after the hoisting is stable, standing next to the equipment while it is running poses a high risk. Therefore, mounting plates 26 are installed on the upper part of the two belts 24, and a mounting plate 26 is set between the mounting plate 26 and the slide bar 25. With a locking structure consisting of a pin and a pin hole, after the belt 24 moves down and separates from the FRP pultruded protective sleeve 6, the mounting plate 26 is locked to the slide rod 25 by the pin, preventing the two belts 24 from sticking together. This avoids the two belts 24 from being too close together, which would result in poor stability and affect the hoisting. When the length of the FRP pultruded protective sleeve 6 outside the testing pool 1 is short after multiple hoisting operations, the pin of the mounting plate 26 farther from the testing pool 1 can be pulled out, and then it can be slid close to the other mounting plate 26 and locked. This ensures that the position of the two belts 24 adapts to the changes in the FRP pultruded protective sleeve 6. Moreover, this adjustment operation is completed before hoisting, and after adjustment, the workers are away from the belts 24 before the hoisting operation is carried out. Even if a problem occurs, personal injury is unlikely.

[0035] When more than half of the FRP pultruded protective sleeve 6 is inserted into the testing pool 1, its center of gravity will shift into the testing pool 1. At this point, if the belt 24 lifts the FRP pultruded protective sleeve 6 again, the FRP pultruded protective sleeve 6 will become tilted, with one end lowered by the annular airbag 2 and the other end higher up, instead of being horizontally lifted by the belt 24 as initially. This will cause the belt 24 to slip easily between itself and the FRP pultruded protective sleeve 6, making it difficult to push it further into the testing pool 1. Therefore, in the face of this situation, the electric push rod 31 is extended to drive the connecting plate 32 and the two hoop rings 33 to move downwards. The closer the hoop rings 33 are to the belt 24, the more likely they are to move downwards. 4. The stronger the tightening effect on both ends of the suspension rope 23 and the belt 24, the more firmly the belt 24 clamps the fiberglass pultruded protective sleeve 6, increasing the friction between the belt 24 and the fiberglass pultruded protective sleeve 6. This eliminates the need to replace other clamps to meet the usage requirements, saving the equipment replacement step. It should be noted that in order to smoothly insert and pull the fiberglass pultruded protective sleeve 6 into and out of the test pool 1 through the belt 24, after the fiberglass pultruded protective sleeve 6 completely penetrates all the through holes 103, a certain length of the fiberglass pultruded protective sleeve 6 will inevitably extend out of the test pool 1 for the belt 24 to clamp.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of performance detection equipment for glass steel pultrusion protective sleeve, including detection pool (1);Characterized by: Further comprising annular air bag (2); detection pool (1) is provided with a plurality of liquid storage cavities (101); Each liquid storage cavity (101) is communicated with a liquid outlet pipe (102); Each liquid storage cavity (101) is communicated with a liquid injection pipe (104); Adjacent two liquid storage cavities (101) are communicated through through hole (103); Two annular air bags (2) are respectively arranged in each through hole (103); Each annular air bag (2) is in contact with the inner wall of through hole (103).

2. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeve according to claim 1, characterized in that: The outer surface of the annular air bag (2) is coated with a corrosion-resistant coating.

3. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeve according to claim 1, characterized in that: Further comprising a pipe (3); Two annular air bags (2) do not contact each other; Each through hole (103) is communicated with a pipe (3), and the pipe (3) is located between the adjacent two annular air bags (2).

4. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 3, characterized in that: Further comprising a cover plate (4); The detection pool (1) is detachably connected with the cover plate (4), and the cover plate (4) is used to prevent the corrosion liquid from splashing to the outside and polluting the working environment when the test liquid is injected.

5. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 4, characterized in that: Further comprising There is a cylindrical air bag (5); The glass fiber reinforced plastic pultrusion protective sleeve (6) is filled with a cylindrical air bag (5), and the cylindrical air bag (5) is used to prevent the corrosion liquid from entering the glass fiber reinforced plastic pultrusion protective sleeve (6) and affecting the test results of the remaining test sections.

6. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 5, characterized in that: Further comprising a lifting frame (21), a lifting ring (22), a lifting rope (23), a belt (24) and a sliding rod (25); The detection pool (1) is provided with a lifting frame (21) suspended by a crane hook (7) on the side; The lifting frame (21) is hung with a lifting ring (22) at both ends; Each lifting ring (22) is fixedly connected with two lifting ropes (23), and the two lifting ropes (23) on the same lifting ring (22) are symmetrically arranged; The lower ends of the two lifting ropes (23) on the same lifting ring (22) are connected with a belt (24).

7. A performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 6, characterized in that: Further comprising a sliding rod (25) and a mounting plate (26); The two ends of the two belts (24) are respectively fixedly connected with a mounting plate (26); The two mounting plates (26) on the same end are slidably connected with a sliding rod (25); The sliding rod (25) is provided with a bolt hole, and the mounting plate (26) is provided with a bolt.

8. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 7, characterized in that: Further comprising an electric push rod (31), a connecting plate (32) and a hoop (33); The electric push rod (31) is fixedly connected in the middle of the lifting frame (21); The electric push rod (31) is fixedly connected with a connecting plate (32) at the telescopic end; The connecting plate (32) is fixedly connected with a hoop (33) at both ends; The two lifting ropes (23) on the same side are located in the same hoop (33).

9. A performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to any one of claims 6 to 8, characterized in that: The battery is arranged in the lifting frame (21) for directly supplying power to the electric push rod (31).

10. The performance testing apparatus for glass fiber reinforced plastic pultruded protective sleeves according to claim 8, characterized in that: The belt (24) is provided with a non-slip pad on the contact surface with the glass fiber reinforced plastic pultrusion protective sleeve (6).

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