A BWFRP cable protection pipe joint sealing performance detection device

Abstract

The present invention relates to the technical field of sealing performance testing of protective pipe joints, and specifically to a sealing performance testing device for BWFRP cable protective pipe joints, comprising a water tank, an upper fixed end and a hydraulic cylinder fixed above the water tank, a collecting plate installed at the pushing end of the hydraulic cylinder, horizontal slide rails fixed symmetrically at the bottom of the collecting plate, a left holding unit and a right holding unit respectively arranged at left-right symmetrical positions on the two horizontal slide rails through electric sliders, and a jacket unit arranged at the bottom of the collecting plate and on the left side of the right holding unit. The present invention adopts multiple sealing performance tests and comprehensively evaluates the sealing performance of the cable protective pipe joints based on the test results, wherein the first test does not apply external force to the cable protective tube, while the second and third tests apply a force pushing to the left and a force pulling to the right to the cable protective tube on the right side, respectively, thereby improving the diversity of the test data and the effectiveness of the test by comparing multiple groups of test data.

Description

Technical Field

[0001] The invention relates to the technical field of sealing performance detection of protective pipe joints, and in particular to a sealing performance detection device for a BWFRP cable protective pipe joint. Background Art

[0002] BWFRP cable protection pipe is a cable protection material widely used in power, communication and other fields. The connection part of the cable protection pipe usually adopts the same cable protection pipe joint. Its specific structure is as follows: Fig.10 As shown, a connection method combining a rubber ring and a joint tube is used. The cable protection tube and the cable protection tube joint can protect the cable during use. However, the cable protection tube joint may not be tightly connected during installation, and the cable protection tube is installed section by section during installation, so that the subsequently installed cable protection tube pushes the installed cable protection tube in different directions, which leads to loose connection at the protection tube joint. At the same time, during the daily maintenance of the cable, the maintenance personnel will rotate the cable protection tube, which causes the cable protection tube joint to rotate, which leads to loosening of the cable protection tube joint and insufficient sealing performance, and moisture infiltrates the cable protection tube joint. The infiltrated moisture will affect the normal operation of the cable, so it is necessary to test the sealing performance of the cable protection tube joint.

[0003] The actual method of testing the sealing performance of the cable protection pipe joint is usually to install only one place and use a positioning device to position the cable protection pipe joint and the cable protection pipe, and then insert the positioned part into the water tank, and then continue to pass gas into the cable protection pipe to evaluate the sealing performance of the cable protection pipe based on whether bubbles are generated at the position of the cable protection pipe joint.

[0004] Although the above-mentioned detection method can quickly and effectively test the sealing performance of the cable protection pipe joint, the cable protection pipe joint is actually installed in multiple places, and the cable protection pipe will be rotated during maintenance. At this time, different forces will be generated between the cable protection pipe and the protection pipe joint, thereby affecting the sealing performance of the cable protection pipe joint. The above-mentioned device cannot simulate the specific working scenario of the cable protection pipe to test the sealing performance of the cable protection pipe joint; in addition, the detection data of the above-mentioned detection method is relatively single. Only one set of data is used, and not only is it impossible to comprehensively evaluate the sealing performance of the cable protection pipe joint, but it is also impossible to eliminate the errors generated during the detection process, resulting in deviations in the detection results. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a BWFRP cable protection pipe joint sealing performance detection device, including a water tank, an upper fixed end and a hydraulic cylinder fixed above the water tank, a collecting plate is installed on the pushing end of the hydraulic cylinder, horizontal slide rails are fixed symmetrically on the bottom of the collecting plate, and left clamping units and right clamping units are respectively arranged at left and right symmetrical positions on the two horizontal slide rails through electric sliders, and a jacket unit is arranged at the bottom of the collecting plate and on the left side of the right clamping unit; the left clamping unit and the right clamping unit respectively include a left fixed plate and a right fixed plate fixed at the bottom of the electric slider, the left fixed plate and the right fixed plate have the same shape, and the relative sides of the left fixed plate and the right fixed plate are respectively rotated A left-turn column and a right-turn column are dynamically installed, and positioning elements for positioning and installing the cable protection pipe joint are symmetrically arranged on the left and right turning columns. The left fixed plate and the collecting plate are commonly connected with a pressure element, and a rotating element for driving the right-turn column to rotate is arranged on the right side of the right fixed plate; the outer sleeve unit includes a lower extension plate fixed at the bottom of the collecting plate, a limiting sleeve is fixed at the bottom end of the lower extension plate, a positioning pin is slidably connected in the limiting sleeve, a positioning frame is fixed to the right end of the positioning pin, an adjusting element is arranged in the positioning frame, a power element cooperating with the adjusting element to drive the positioning frame and the positioning pin to move is arranged on the lower extension plate, a positioning ring is fixed at the bottom of the positioning frame, and an external clamping element for clamping the outside of the cable protection tube is arranged on the positioning ring.

[0006] As a preferred solution of the present invention, the positioning element includes a plurality of horizontal slide grooves uniformly arranged on the side of the left turn column in the circumferential direction, the left side of the horizontal slide groove is connected with a sliding block through a horizontal spring, a limiting groove is arranged in the horizontal slide groove, the sliding block is slidably connected to the horizontal slide groove through the limiting groove, an embedded rod is fixed on the side of the sliding block away from the left turn column, an outer sleeve block is connected to the embedded rod through an inner spring, a compression slope is arranged on the right side of the outer sleeve block, and a push block is fixed to the bottom of the left side of the outer sleeve block; a pushing ring for pushing the pushed block is arranged on the right side of the left fixed plate.

[0007] As a preferred solution of the present invention, the pressurizing element includes a gas booster fixed at the left end of the bottom of the collecting plate, and the output end of the gas booster is connected to the left side of the left fixed plate through a hose; a through groove is opened in the middle of the left fixed plate and corresponds to the position of the hose, a connecting groove is opened in the middle of the left rotating column, and closed rings are rotatably installed on the left and right fixed plates.

[0008] As a preferred solution of the present invention, the rotating element includes a No. 1 motor fixed on the right side of the right fixed plate; a transmission shaft sliding through the right fixed plate is fixed on the right side of the right turning column, and a transmission belt is connected between the transmission shaft and the output section of the No. 1 motor.

[0009] As a preferred solution of the present invention, the adjusting element includes a central gear rotatably installed in a positioning frame, an adjusting structure is arranged on the front side of the central gear, vertical rods are symmetrically and slidingly connected on the left and right sides of the central gear in the positioning frame, and each vertical rod is fixed with a plurality of linearly and evenly distributed tooth-shaped protrusions on the side close to the central gear, an avoidance groove is opened at the top of the positioning frame and at the position of the vertical rod, and a track block cooperating with the power element is fixed to the top of the vertical rod.

[0010] As a preferred solution of the present invention, the adjustment structure includes a through column fixed on the front side of the center gear, a right extension plate is fixed to the front end of the through column, a positioning hole is opened on the center gear, and two matching holes are circumferentially arranged on the positioning frame with the center gear as the center, and a positioning pin is commonly connected between the positioning hole and the matching hole at the corresponding position.

[0011] As a preferred solution of the present invention, the power element includes a No. 2 motor fixed on the left side of the lower extension plate. The output end of the No. 2 motor slides through the lower extension plate and is fixed with a cylinder. A track groove for cooperating with the adjusting element is opened on the side of the cylinder. The track groove can drive the positioning frame to move back and forth left and right through the track block.

[0012] As a preferred solution of the present invention, the external clamping element includes a plurality of inner push structures arranged on the positioning ring and evenly distributed circumferentially, a plurality of fan-shaped limit slide grooves are fixed on the side of the positioning ring, a limit slide block is slidably connected in each limit slide groove, a notch ring is fixed on all the limit slide blocks, a plurality of pushing inclined blocks for pushing the inner push structures are fixed on the inner ring surface of the notch ring, and a fixed structure is arranged between the notch ring and the positioning ring.

[0013] As a preferred solution of the present invention, the inward push structure includes a centripetal rod sliding through the positioning ring, an arc-shaped plate is fixed to one end of the centripetal rod located inside the positioning ring, a circular plate pushed by a pushed inclined block is fixed to one end of the centripetal rod located outside the positioning ring, and a compression spring is connected between the circular plate and the positioning ring.

[0014] As a preferred solution of the present invention, the fixing structure includes an alignment hole formed on the notch ring, two clearance holes formed on the positioning ring, and a fixing pin is connected between the alignment hole and the clearance holes at corresponding positions.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention adopts multiple sealing performance tests and comprehensively evaluates the sealing performance of the cable protection pipe joint according to the test results, wherein the first test does not apply external force to the cable protection pipe, while the second and third tests respectively apply a force pushing to the left and a force pulling to the right to the cable protection pipe on the right side, and mainly changes the direction of the external force applied to the cable protection pipe by the external clamping element by adjusting the element, thereby affecting the connection of the cable protection pipe joint, thereby achieving the purpose of detecting the sealing performance of the cable protection pipe joint position under external forces in different situations, and adopts a method of comparing multiple groups of test data to improve the diversity of test data and the effectiveness of detection, thereby ensuring the accuracy of the test results.

[0016] 2. The present invention applies external force to the side of the cable protection tube through the outer sleeve unit, thereby simulating the situation that the cable protection tube and the cable protection tube joint will be subjected to the pushing force during the burial process of the new cable protection tube, and at the same time, the adjusting element is used to change the direction of the external force applied to the cable protection tube, so as to be closer to the actual cable protection tube. The new cable protection tube is subjected to pushing forces in different directions during the burial process, and the external clamping element can also generate a force to prevent the rotation of the cable protection tube, thereby making the detection closer to the situation that the cable protection tube and the cable protection tube joint rotate in the soil during the daily maintenance of the cable, making the detection result more practical, thereby ensuring the normal operation of the cable in a complex environment.

[0017] 3. The present invention adopts a pressurizing element to pressurize the inside of the cable protection tube, so as to accurately detect the sealing performance of the cable protection tube and the cable protection tube joint within a certain pressure range, and can adjust the pressure inside the cable protection tube according to the working environment of the cable protection tube and the cable protection tube joint, thereby making the sealing performance detection more practical, and adopts a closed ring to further seal the cable protection tube and the cable protection tube joint to ensure the pressurizing effect and efficiency of the pressurizing element, while avoiding the cable protection tube being damaged by friction during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is the front view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the left clamping unit in the present invention.

[0022] Figure 4 It is a partial cross-sectional view of the left clamping unit in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the right clamping unit and the outer jacket unit in the present invention.

[0024] Figure 6 It is a schematic structural diagram of the jacket unit in the present invention from a first viewing angle.

[0025] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0026] Figure 8 It is a second viewing angle structural schematic diagram of the jacket unit in the present invention.

[0027] Fig. 9 It is a partial cross-sectional view of a portion of the jacket unit in the present invention.

[0028] Fig.10 It is a structural schematic diagram of a cable protection pipe and a cable protection pipe joint.

[0029] In the figure: 1, water tank; 2, hydraulic cylinder; 21, assembly plate; 22, horizontal slide rail; 3, left clamping unit; 31, left fixed plate; 311, left rotating column; 32, positioning element; 321, horizontal slide groove; 322, sliding block; 323, embedded rod; 324, outer cover block; 325, push block; 326, push ring; 33, pressurizing element; 331, gas booster; 332, hose; 333, through groove; 334, closed ring; 4, right clamping unit; 41, right fixed plate; 411, right rotating column; 42, rotating element; 421, No. 1 motor; 422, transmission shaft; 423, transmission belt; 5, outer cover unit; 51, lower extension plate; 511, Limit sleeve; 512, positioning pin; 513, positioning frame; 514, positioning ring; 52, adjusting element; 521, central gear; 522, vertical rod; 523, toothed protrusion; 524, avoidance groove; 525, track block; 526, through column; 527, right extension plate; 528, positioning hole; 529, matching hole; 53, power element; 531, No. 2 motor; 532, cylinder; 533, track groove; 54, external clamping element; 541, limit slide groove; 542, limit slider; 543, notch ring; 544, push inclined block; 545, centripetal rod; 546, arc husband plate; 547, round plate; 548, alignment hole; 549, fixing pin. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0031] See also Figure 1-Figure 2 A BWFRP cable protection pipe joint sealing performance detection device comprises a water tank 1, a hydraulic cylinder 2 is fixed at the upper fixed end and located above the water tank 1, a collecting plate 21 is installed at the pushing end of the hydraulic cylinder 2, horizontal slide rails 22 are fixed symmetrically at the bottom of the collecting plate 21, a left clamping unit 3 and a right clamping unit 4 are respectively arranged at left and right symmetrical positions on the two horizontal slide rails 22 through electric sliders, and a jacket unit 5 is arranged at the bottom of the collecting plate 21 and located on the left side of the right clamping unit 4.

[0032] The present invention clamps and positions the cable protection tube and the cable protection tube joint by the left clamping unit 3 and the right clamping unit 4, and applies external force to the side of the cable protection tube by the jacket unit 5, thereby simulating that the cable protection tube and the cable protection tube joint will be subject to pushing forces in different directions during the burial process of the new cable protection tube, and the cable protection tube and the cable protection tube joint will rotate in the process close to the daily cable maintenance, thereby making the sealing performance test result more practical. At the same time, the cable protection tube and the cable protection tube joint are fully placed in the water tank 1 to test their sealing performance, so as to quickly and intuitively evaluate the sealing performance of the cable protection tube and the cable protection tube joint.

[0033] Specifically, the cable protection tube and the cable protection tube joint are first lifted by an external lifting device until they are sleeved on the left clamping unit 3, and then the two electric sliders are controlled to synchronously drive the left clamping unit 3 and the right clamping unit 4 to move toward each other, so that the cable protection tube and the cable protection tube joint are positioned and clamped by the left clamping unit 3 and the right clamping unit 4. After the cable protection tube and the cable protection tube joint are positioned, the hydraulic cylinder 2 is controlled to push the collecting plate 21, the left clamping unit 3 and the right clamping unit 4 downward, so as to drive the cable protection tube and the cable protection tube joint to be inserted into the water tank 1 pre-filled with water, and then the left clamping unit 3 and the right clamping unit 4 cooperate to test the sealing performance of the cable protection tube and the cable protection tube joint, and at the same time, the outer sleeve unit 5 is used to clamp the side of the cable protection tube and the cable protection tube joint. After clamping, external force is continuously applied to the side of the cable protection tube, so as to simulate the situation during the actual use of the cable protection tube. Finally, the inspector evaluates the sealing performance of the cable protection tube joint by observing whether bubbles are generated at the position of the cable protection tube joint.

[0034] See also Figure 1 , Figure 2 , Figure 3 and Figure 5The left clamping unit 3 and the right clamping unit 4 respectively include a left fixed plate 31 and a right fixed plate 41 fixed at the bottom of the electric slider. The left fixed plate 31 and the right fixed plate 41 have the same shape. The left fixed plate 31 and the right fixed plate 41 are rotatably installed on the opposite sides of the left fixed plate 31 and the right fixed plate 41 respectively. The left rotating column 311 and the right rotating column 411 are symmetrically provided with positioning elements 32 for positioning and installing the cable protection pipe joint. The left fixed plate 31 and the collecting plate 21 are commonly connected with a pressurizing element 33. The right side surface of the right fixed plate 41 is provided with a rotating element 42 for driving the right rotating column 411 to rotate.

[0035] Specifically, first, the cable protection tube and the cable protection tube joint to be inspected are lifted to the position between the left clamping unit 3 and the right clamping unit 4 by an external lifting device, and then the two electric sliders are controlled to synchronously drive the left fixed plate 31 and the right fixed plate 41 to move toward each other, so as to cooperate with the positioning element 32 and the left turning column 311 and the right turning column 411 for positioning. After the positioning is completed, the hydraulic cylinder 2 is controlled to push the collecting plate 21, the left clamping unit 3 and the right clamping unit 4 downward, so that the cable protection tube, the cable protection tube joint, the left turning column 311 and the right turning column 411 all enter the underwater part of the water tank 1, and then the pressurizing element 33 and the rotating element 42 are synchronously controlled to continuously pressurize the inside of the cable protection tube and the cable protection tube joint during the synchronous rotation of the left turning column 311 and the right turning column 411, so that the inside of the cable protection tube and the cable protection tube joint reaches a fixed pressure, and the sealing performance of the cable protection tube joint is evaluated by whether bubbles emerge at the position of the cable protection tube joint.

[0036] See also Figure 3-Figure 4 The positioning element 32 includes a plurality of horizontal sliding grooves 321 uniformly arranged on the side of the left turning column 311 in the circumferential direction. The left side of the horizontal sliding groove 321 is connected to a sliding block 322 through a horizontal spring. A limiting groove is arranged in the horizontal sliding groove 321. The sliding block 322 is slidably connected to the horizontal sliding groove 321 through the limiting groove. An embedded rod 323 is fixed to the side of the sliding block 322 away from the left turning column 311. An outer sleeve block 324 is connected to the embedded rod 323 through an inner spring. The end of the outer sleeve block 324 away from the embedded rod 323 is an arc surface. A compression slope is arranged on the right side of the outer sleeve block 324. A push block 325 is fixed to the bottom of the left side of the outer sleeve block 324; a pushing ring 326 for pushing the pushed block 325 is arranged on the right side of the left fixed plate 31.

[0037] The positioning element 32 is used to perform internal positioning on the cable protection tube joint and the two ends of the cable protection tube as a whole, mainly by synchronously pushing all the pushed blocks 325 through the pushing ring 326, and driving the outer sleeve block 324 to synchronously perform internal positioning on all the cable protection tubes, and adopts the method of first internal positioning and then closing, so as to avoid affecting the sealing performance of the cable protection tube joint due to excessive pushing of the cable protection tube, thereby ensuring the effectiveness of the detection structure.

[0038] Specifically, when the two electric sliders are controlled to synchronously drive the left fixed plate 31 and the right fixed plate 41 to move toward each other, the outer sleeve block 324 will be pushed and the horizontal spring will be compressed first due to the contact with the cable protection tube. When the horizontal spring is compressed to a certain extent, the cable protection tube can no longer push the outer sleeve block 324, so that the cable protection tube pushes the outer sleeve block 324 to the position of the embedded rod 323 through the compressed slope, and at this time, due to the action of the pushing ring 326, all the outer sleeve blocks 324 are pushed upward, thereby increasing the friction between the outer sleeve block 324 and the inner wall of the cable protection tube, thereby positioning the cable protection tube internally.

[0039] It should be noted that, in order to increase the friction coefficient between the cable protection tube and the outer cover block 324 , a friction rubber pad needs to be provided at one end of the outer cover block 324 away from the embedded rod 323 .

[0040] Continue reading Figure 3-Figure 4 The pressurizing element 33 includes a gas booster 331 fixed at the left end of the bottom of the collecting plate 21, and the output end of the gas booster 331 is connected to the left side of the left fixed plate 31 through a hose 332; a through groove 333 is opened in the middle of the left fixed plate 31 and corresponds to the position of the hose 332, and a connecting groove is opened in the middle of the left rotating column 311, and a closed ring 334 is rotatably installed on the left fixed plate 31 and the right fixed plate 41; the rotating element 42 includes a No. 1 motor 421 fixed on the right side of the right fixed plate 41; a transmission shaft 422 that slides through the right fixed plate 41 is fixed on the right side of the right rotating column 411, and a transmission belt 423 is connected between the transmission shaft 422 and the output section of the No. 1 motor 421.

[0041] The pressurizing element 33 is used to pressurize the cable protection tube, so as to accurately detect the sealing performance of the cable protection tube and the cable protection tube joint within a certain pressure range, and can adjust the pressure inside the cable protection tube according to the working environment of the cable protection tube and the cable protection tube joint, thereby making the sealing performance detection more practical. At the same time, the rotating element 42 can continuously drive the cable protection tube and the cable protection tube joint to rotate, so that the inspector can more easily observe whether bubbles are generated at the position of the cable protection tube joint.

[0042] Specifically, after the positioning element 32 completes the positioning of the cable protection pipe joint and the cable protection pipe, the hydraulic cylinder 2 is controlled to push the collecting plate 21, the left clamping unit 3 and the right clamping unit 4 downward. After the cable protection pipe, the cable protection pipe joint, the left turning column 311 and the right turning column 411 are all underwater in the water tank 1, the No. 1 motor 421 is first controlled to drive the transmission shaft 422 to rotate through the transmission belt 423, so that the right turning column 411 rotates, and the cable protection pipe joint and the cable protection pipe are driven by the right turning column 411 and the positioning element 32 to rotate, and the connection between the cable protection pipe joint and the cable protection pipe drives the positioning element 32 on the left to rotate.

[0043] During the rotation of the cable protection pipe joint and the cable protection pipe, the gas booster 331 is controlled to continuously pressurize the cable protection pipe joint and the cable protection pipe, so that the pressure in the cable protection pipe joint and the cable protection pipe reaches the required range. Then, the inspection personnel observe whether bubbles are generated at the position of the cable protection pipe joint, and then evaluate the sealing performance of the cable protection pipe joint.

[0044] See also Figure 5 , Figure 6 and Fig. 9 The jacket unit 5 includes a lower extension plate 51 fixed at the bottom of the collecting plate 21, a limiting sleeve 511 is fixed at the bottom end of the lower extension plate 51, a positioning pin 512 is slidably connected in the limiting sleeve 511, a positioning frame 513 is fixed at the right end of the positioning pin 512, an adjusting element 52 is arranged in the positioning frame 513, a power element 53 is arranged on the lower extension plate 51 for cooperating with the adjusting element 52 to drive the positioning frame 513 and the positioning pin 512 to move, a positioning ring 514 is fixed at the bottom of the positioning frame 513, and an external clamping element 54 for clamping the outside of the cable protection tube is arranged on the positioning ring 514.

[0045] Specifically, when the inspector completes the observation of the cable protection pipe joint of the first inspection, the outer clamping element 54 is controlled to clamp the side of the outer clamping element 54 on the right side, and the power element 53 is controlled to drive the adjusting element 52 and the outer clamping element 54 to push the side of the cable protection pipe, thereby simulating that the cable protection pipe joint will be pushed in different directions during the burial process of the new cable protection pipe, and at the same time, the cable protection pipe and the cable protection pipe joint will rotate in the process of daily cable maintenance, and then the operation of the above-mentioned pressurizing element 33 and the rotating element 42 is repeated again, so as to adjust the cable protection pipe in the process of burying the new cable protection pipe. The sealing performance of the cable protection pipe joint position under external force is further tested. After the test is completed, the control adjustment element 52 changes the direction of the driving force, thereby making the test data more diverse and closer to the situation where the cable protection pipe joint is subjected to driving forces in different directions during the burial of the new cable protection pipe. At the same time, it is close to the situation where the cable protection pipe and the cable protection pipe joint will rotate during the daily cable maintenance process, and the external clamping element 54 can also generate a force to prevent the rotation of the cable protection pipe, thereby making the test closer to the complex use environment of the actual cable protection pipe.

[0046] See also Figure 6 and Figure 8 The outer clamping element 54 includes a plurality of inner push structures which are arranged on the positioning ring 514 and are evenly distributed in the circumferential direction. A plurality of fan-shaped limiting grooves 541 are fixed on the side of the positioning ring 514. A limiting slider 542 is slidably connected in each limiting groove 541. A notch ring 543 is fixed on all the limiting sliders 542. A plurality of pushing inclined blocks 544 for pushing the inner push structure are fixed on the inner ring surface of the notch ring 543. A fixed structure is arranged between the notch ring 543 and the positioning ring 514. The inner push structure includes a centripetal rod 545 which slides through the positioning ring 514. An arc-shaped husband plate 546 is fixed on one end of the centripetal rod 545 located inside the positioning ring 514. A circular plate 547 pushed by the pushing inclined block 544 is fixed on one end of the centripetal rod 545 located outside the positioning ring 514. A compression spring is connected between the circular plate 547 and the positioning ring 514. The fixing structure includes an alignment hole 548 formed on the notch ring 543 , and two clearance holes are formed on the positioning ring 514 . A fixing pin 549 is connected between the alignment hole 548 and the clearance holes at corresponding positions.

[0047] The external clamping element 54 is used to clamp the side of the cable protection tube, so that the power element 53 cooperates with the adjusting element 52 to apply external force to the cable protection tube. Specifically, when the inspector completes the observation of the cable protection tube joint for the first inspection, the notch ring 543 is controlled to rotate, and the notch ring 543 then drives the pushing inclined block 544 to push the circular plate 547, so that the circular plate 547 drives the centripetal rod 545 and the arc-shaped clamping plate 546 to move toward the cable protection tube, and then the arc-shaped clamping plate 546 presses against the side of the cable protection tube. After the pressing is completed, the fixing pin 549 is controlled to cooperate with the clearance hole and the alignment hole 548 to fix the position of the notch ring 543, so that multiple arc-shaped clamping plates 546 can stably clamp the cable protection tube.

[0048] See also Figure 6-Figure 9 The adjusting element 52 includes a central gear 521 rotatably mounted in the positioning frame 513, an adjusting structure is provided on the front side of the central gear 521, vertical rods 522 are symmetrically slidably connected on the left and right sides of the central gear 521 in the positioning frame 513, and a plurality of linearly evenly distributed tooth-shaped protrusions 523 are fixed on the side of each vertical rod 522 close to the central gear 521, and an avoidance groove 524 is provided at the top of the positioning frame 513 and located at the position of the vertical rod 522, and a track block 525 cooperating with the power element 53 is fixed on the top of the vertical rod 522; the adjusting structure includes a through column 526 fixed on the front side of the central gear 521, a right extension plate 527 is fixed at the front end of the through column 526, a positioning hole 528 is provided on the central gear 521, and two matching holes 529 are circumferentially provided on the positioning frame 513 with the central gear 521 as the center, and a positioning pin is connected between the positioning hole 528 and the matching hole 529 at the corresponding position.

[0049] The power element 53 includes a No. 2 motor 531 fixed on the left side of the lower extension plate 51. The output end of the No. 2 motor 531 slides through the lower extension plate 51 and is fixed with a cylinder 532. A track groove 533 for cooperating with the adjustment element 52 is opened on the side of the cylinder 532. The track groove 533 can drive the positioning frame 513 to move back and forth left and right through the track block 525.

[0050] The adjusting element 52 is used to cooperate with the power element 53 to push the outer clamping element 54, so that the outer clamping element 54 applies an external force to the side of the cable protection tube, and the direction of the external force applied by the outer clamping element 54 on the cable protection tube can be changed through the adjusting element 52, so that the outer clamping element 54 pushes the cable protection tube on the right side to the left or pulls the cable protection tube on the right side to the right, thereby affecting the connection of the cable protection tube joint, thereby achieving the purpose of detecting the sealing performance of the cable protection tube joint position under the action of external forces in different situations.

[0051] Specifically, when the arc-shaped clamping plate 546 has completed the stable clamping of the cable protection tube, the second motor 531 is controlled to drive the cylinder 532 to rotate, so that the track groove 533 cooperates with the track block 525 on the right and drives the positioning frame 513 to intermittently move to the left and then return to the position, so that the positioning frame 513 drives the outer clamping element 54 to intermittently move to the left and then reset, thereby pushing the right cable protection tube to the left, and then releasing the force of the outer clamping element 54 pushing the cable protection tube to the left. In the process of the outer clamping element 54 pushing the cable protection tube to the left, the inspection personnel observe the position of the cable protection tube joint. If bubbles are generated at the cable protection tube joint, it proves that the sealing performance of the cable protection tube joint is poor. If no bubbles are generated at the cable protection tube joint during continuous pressurization, it indicates that the sealing performance of the cable protection tube joint meets the requirements.

[0052] Then, the pushing direction of the outer clamping element 54 is changed by adjusting the element 52. The positioning pin is removed first, and then the right extension plate 527 is rotated to rotate the positioning hole 528 to another matching hole 529. During this process, the center gear 521 will rotate clockwise, and drive the vertical rod 522 on the right to move downward through the toothed protrusion 523 on the right, and at the same time drive the track block 525 on the right to move downward and away from the track groove 533 on the right. At this time, the vertical rod 522 on the left will move upward due to the cooperation of the toothed protrusion 523 and the center gear 521, and drive the track block 525 on the left to move into the track groove 533 on the left, and then the sealing performance of the cable protection pipe joint position is tested again.

[0053] The working steps of the present invention are as follows: In the first step, the cable protection tube and the cable protection tube joint to be inspected are lifted to the position between the left clamping unit 3 and the right clamping unit 4 by an external lifting device, and then the two electric slides are controlled to synchronously drive the left fixed plate 31 and the right fixed plate 41 to move toward each other, thereby cooperating with the positioning element 32 and the left turning column 311 and the right turning column 411 for positioning.

[0054] In the second step, after the left clamping unit 3 and the right clamping unit 4 have completed positioning of the cable protection tube and the cable protection tube joint, the hydraulic cylinder 2 is controlled to push the collecting plate 21, the left clamping unit 3 and the right clamping unit 4 downward, so that the cable protection tube, the cable protection tube joint, the left turning column 311 and the right turning column 411 all enter the underwater part of the water tank 1, and then the pressurizing element 33 and the rotating element 42 are synchronously controlled to continuously pressurize the inside of the cable protection tube and the cable protection tube joint during the synchronous rotation of the left turning column 311 and the right turning column 411, so that the inside of the cable protection tube and the cable protection tube joint reaches a fixed pressure.

[0055] In the third step, as the pressurizing element 33 and the rotating element 42 act on the cable protection tube and the cable protection tube joint synchronously, the inspector observes the position of the cable protection tube joint. If bubbles are generated at the cable protection tube joint, it proves that the sealing performance of the cable protection tube joint is poor. If no bubbles are generated at the cable protection tube joint during the continuous pressurization process, it indicates that the sealing performance of the cable protection tube joint meets the requirements.

[0056] In the fourth step, when the inspector completes the observation of the cable protection pipe joint inspected for the first time, the outer clamping element 54 is controlled to clamp the side of the outer clamping element 54 on the right side, and the power element 53 is controlled to drive the adjusting element 52 and the outer clamping element 54 to push the side of the cable protection pipe, thereby simulating the situation that the cable protection pipe joint will be subject to pushing forces in different directions during the burial process of the new cable protection pipe, and at the same time, the cable protection pipe and the cable protection pipe joint will rotate during the daily maintenance of the cable, and then the operation of the above-mentioned pressure element 33 and the rotating element 42 is repeated again to further inspect the sealing performance of the cable protection pipe joint position under the external force of the cable protection pipe.

[0057] The fifth step, after the second test is completed, the control adjustment element 52 is used to change the direction of the driving force, and then the pressure element 33 and the rotating element 42 are repeatedly controlled to act on the cable protection tube and the cable protection tube joint. At the same time, the test personnel repeatedly observe the position of the above-mentioned cable protection tube joint, and then comprehensively evaluate the sealing performance of the cable protection tube joint based on the results of the three tests.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A BWFRP cable protection pipe joint sealing performance testing device, comprising a water tank (1), a hydraulic cylinder (2) fixed at the upper fixed end and located above the water tank (1), and a collection plate (21) installed at the pushing end of the hydraulic cylinder (2), characterized in that: A horizontal slide rail (22) is fixed symmetrically to the bottom of the assembly plate (21); a left clamping unit (3) and a right clamping unit (4) are respectively arranged at symmetrical positions on the two horizontal slide rails (22) via electric sliders; and a BWFRP jacket unit (5) is arranged at the bottom of the assembly plate (21) and on the left side of the right clamping unit (4); The left clamping unit (3) and the right clamping unit (4) respectively comprise a left fixed plate (31) and a right fixed plate (41) fixed to the bottom of the electric slider, the left fixed plate (31) and the right fixed plate (41) have the same shape, the left fixed plate (31) and the right fixed plate (41) are rotatably mounted on opposite sides of the left fixed plate (31) and the right fixed plate (41), positioning elements (32) for positioning and mounting the cable protection pipe joint are symmetrically arranged on the left and right sides of the left fixed plate (311) and the right fixed plate (411), a pressure element (33) is commonly connected to the left fixed plate (31) and the assembly plate (21), and a rotating element (42) for driving the right rotating column (411) to rotate is arranged on the right side surface of the right fixed plate (41); The jacket unit (5) comprises a lower extension plate (51) fixed to the bottom of the assembly plate (21); a limiting sleeve (511) is fixed at the bottom end of the lower extension plate (51); a positioning pin (512) is slidably connected in the limiting sleeve (511); a positioning frame (513) is fixed at the right end of the positioning pin (512); an adjusting element (52) is arranged in the positioning frame (513); a power element (53) is arranged on the lower extension plate (51) for cooperating with the adjusting element (52) to drive the positioning frame (513) and the positioning pin (512) to move; a positioning ring (514) is fixed at the bottom of the positioning frame (513); and an external clamping element (54) for clamping the outside of the cable protection tube is arranged on the positioning ring (514).

2. The BWFRP cable protection pipe joint sealing performance detection device according to claim 1 is characterized in that: The positioning element (32) comprises a plurality of horizontal slide grooves (321) uniformly arranged on the side of the left turning column (311) in the circumferential direction, the left side of the horizontal slide groove (321) is connected with a sliding block (322) via a horizontal spring, a limiting groove is arranged in the horizontal slide groove (321), the sliding block (322) is slidably connected with the horizontal slide groove (321) via the limiting groove, an embedded rod (323) is fixed on the side of the sliding block (322) away from the left turning column (311), an outer sleeve block (324) is connected to the embedded rod (323) via an inner spring, a pressure slope is arranged on the right side of the outer sleeve block (324), and a push block (325) is fixed on the bottom of the left side of the outer sleeve block (324); a pushing ring (326) for pushing the pushed block (325) is arranged on the right side of the left fixed plate (31).

3. The BWFRP cable protection pipe joint sealing performance detection device according to claim 1 is characterized in that: The pressurizing element (33) comprises a gas booster (331) fixed at the left end of the bottom of the collecting plate (21), and the output end of the gas booster (331) is connected to the left side surface of the left fixed plate (31) through a hose (332); a through groove (333) is provided in the middle of the left fixed plate (31) and at a position corresponding to the hose (332), a connecting groove is provided in the middle of the left rotating column (311), and closed rings (334) are rotatably mounted on both the left fixed plate (31) and the right fixed plate (41).

4. The BWFRP cable protection pipe joint sealing performance detection device according to claim 1, characterized in that: The rotating element (42) comprises a first motor (421) fixed on the right side of the right fixed plate (41); a transmission shaft (422) slidingly penetrating the right fixed plate (41) is fixed on the right side of the right rotating column (411); a transmission belt (423) is connected between the transmission shaft (422) and the output section of the first motor (421).

5. The BWFRP cable protection pipe joint sealing performance detection device according to claim 1 is characterized in that: The adjusting element (52) comprises a central gear (521) rotatably mounted in a positioning frame (513); an adjusting structure is arranged on the front side of the central gear (521); vertical rods (522) are symmetrically slidably connected to the left and right sides of the central gear (521) in the positioning frame (513); a plurality of linearly evenly distributed tooth-shaped protrusions (523) are fixed on the side of each vertical rod (522) close to the central gear (521); an avoidance groove (524) is arranged at the top of the positioning frame (513) and at the position of the vertical rod (522); and a track block (525) cooperating with the power element (53) is fixed on the top of the vertical rod (522).

6. The BWFRP cable protection pipe joint sealing performance detection device according to claim 5 is characterized in that: The adjustment structure comprises a through column (526) fixed on the front side of the central gear (521), a right extension plate (527) is fixed on the front end of the through column (526), ​​a positioning hole (528) is opened on the central gear (521), and two matching holes (529) are arranged on the positioning frame (513) in a circumferential direction with the central gear (521) as the center, and a positioning pin is commonly connected between the positioning hole (528) and the matching hole (529) at the corresponding position.

7. The BWFRP cable protection pipe joint sealing performance detection device according to claim 5 is characterized in that: The power element (53) comprises a second motor (531) fixed on the left side of the lower extension plate (51); the output end of the second motor (531) slides through the lower extension plate (51) and is fixed with a cylinder (532); a track groove (533) for cooperating with the adjustment element (52) is provided on the side of the cylinder (532); the track groove (533) can drive the positioning frame (513) to move back and forth left and right through the track block (525).

8. The BWFRP cable protection pipe joint sealing performance detection device according to claim 1, characterized in that: The outer clamping element (54) comprises a plurality of inner push structures which are arranged on the positioning ring (514) and are evenly distributed in the circumferential direction. A plurality of fan-shaped limiting grooves (541) are fixed on the side of the positioning ring (514). A limiting slider (542) is slidably connected in each limiting groove (541). A notch ring (543) is fixed on all the limiting sliders (542). A plurality of pushing inclined blocks (544) for pushing the inner push structures are fixed on the inner ring surface of the notch ring (543). A fixing structure is arranged between the notch ring (543) and the positioning ring (514).

9. The BWFRP cable protection pipe joint sealing performance detection device according to claim 8, characterized in that: The inner push structure comprises a centripetal rod (545) which slides through the positioning ring (514); an arc-shaped plate (546) is fixed to one end of the centripetal rod (545) located inside the positioning ring (514); a circular plate (547) pushed by a pushing inclined block (544) is fixed to one end of the centripetal rod (545) located outside the positioning ring (514); a compression spring is connected between the circular plate (547) and the positioning ring (514).

10. The BWFRP cable protection pipe joint sealing performance detection device according to claim 8, characterized in that: The fixing structure comprises an alignment hole (548) formed on the notch ring (543), two clearance holes are formed on the positioning ring (514), and a fixing pin (549) is connected between the alignment hole (548) and the clearance holes at corresponding positions.

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