Basalt fiber composite pipe pressure testing device and method

Abstract

The invention relates to the technical field of pipe body pressure testing, in particular to a basalt fiber composite pipe pressure testing device and method.The basalt fiber composite pipe pressure testing device comprises a bottom plate, a shell is fixed to the upper side of the bottom plate, a plurality of sliding rods are slidably inserted into the two sides of the shell, a vertical rod is fixed to one end of each sliding rod, and the vertical rod is fixed to the other end of each sliding rod; and a movable rod is rotationally arranged at the upper end of each vertical rod. A lead screw sliding block in the feeding mechanism and two trapezoidal pushing blocks on the two sides of the lead screw sliding block move linearly, in the moving process, the two trapezoidal pushing blocks can sequentially apply reverse rotating torque to two movable rods in each set through a pushing and pressing mechanism, and therefore two pressing plates in each set can sequentially apply pressure to the two sides of a pipe body at the same time; when a long pipe body is tested, the pressure test can be automatically and sequentially carried out on each section position on the pipe body, the position of the pipe body does not need to be frequently switched, the operation difficulty during the test is reduced, and the test efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe pressure testing, and in particular to a basalt fiber composite pipe pressure testing device and method. Background Art

[0002] As a new material, basalt fiber composites have become the preferred material for improving pipe compressive strength and corrosion resistance during pipeline production. During basalt fiber composite pipe production, each pipe must undergo pressure testing to ensure stable compressive performance during normal use.

[0003] A search revealed a Chinese patent with the publication number CN115791426B, which discloses a basalt fiber composite pipe pressure testing device and method. This invention employs a set of horizontal guide assemblies capable of circumferentially rotating the composite pipe, along with a first lifting device and thrust assembly positioned below the composite pipe and a downward pressure assembly above the composite pipe. Furthermore, a label reader mechanism coordinates with a readable information label affixed to the inner circumference of the composite pipe for precise, controllable pressure extrusion at "node" locations on the circumference of the composite pipe. A first pressure sensing module monitors the pipe deformation near the extrusion point in real time, effectively and accurately completing the circumferential pressure test of the composite pipe. Furthermore, through the axial guide support of the axial guide assembly and the linear motor-driven guide shaft and propulsion frame to advance the composite pipe, a comprehensive, integrated pressure test of the entire composite pipe made of the new material is achieved.

[0004] However, the device can only perform compression testing on a certain section of the composite pipe at a time. Since the length of the basalt fiber composite pipe is usually several meters and needs to be tested in batches, the device needs to adjust the position of the basalt fiber composite pipe after each compression test on a position on the basalt fiber composite pipe, and then test other positions. This process is complicated to operate, which greatly reduces the efficiency of the compression test of the basalt fiber composite pipe. Summary of the Invention

[0005] The object of the present invention is to provide a basalt fiber composite pipe pressure testing device and method to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a basalt fiber composite pipe pressure testing device and method, including a base plate, a shell fixed on the upper side of the base plate, a plurality of sliding rods are slidably inserted on both sides of the shell, a vertical rod is fixed at one end of each sliding rod, and a movable rod is rotatably provided on the upper end of each vertical rod, and also includes an opening and closing mechanism for driving the multiple sliding rods to move, and a pushing mechanism for applying a torsional torque to the multiple movable rods respectively; the pushing mechanism includes an air cylinder 2 rotatably connected to the sliding rod, and an air cylinder 1 fixed on the upper side of the shell, one end of the air cylinder 1 and the air cylinder 2 are respectively slidably inserted with a push rod 1 and a push rod 2, one end of the push rod 2 is rotatably connected to the lower end of the movable rod, and the air cylinder 1 and the air cylinder 2 are connected by a connecting pipe; it also includes a feeding mechanism for pushing the multiple push rods 1 to move in sequence.

[0007] Preferably, the feeding mechanism includes a second motor installed at one end of the upper side of the shell, a screw is fixed to the driving end of the second motor, the end of the screw is rotatably connected to the other end of the upper side of the shell, and the outer side of the screw is threadedly connected to a screw slider, two trapezoidal push blocks are symmetrically fixed on both sides of the screw slider, a slide bar is fixed on the upper side of the shell, and the lower side of the screw slider is slidably adapted to the outer side of the slide bar.

[0008] Preferably, the opening and closing mechanism includes a motor 1 installed at one end of the outer side of the shell, a plurality of first racks fixed to one end of a plurality of sliding rods on one side, and a plurality of second racks fixed to one end of a plurality of sliding rods on the other side. The driving end of the motor 1 is fixed with a gear shaft extending to the inner side of the shell, and gears are fixed on the outer side of the gear shaft at positions corresponding to each first rack and second rack, and both sides of each gear are respectively engaged with the first rack and second rack at the corresponding position.

[0009] Preferably, one end of the push rod is threadedly connected to an adjusting screw, one end of the adjusting screw is rotatably connected to a roller, one end of the push rod is also rotatably connected to an adjusting nut, the adjusting nut is threadedly connected to the outside of the adjusting screw, and a plurality of guide grooves are also provided on the outside of the adjusting screw, and a convex strip that slides and fits with the inner side of the guide groove is fixed on the inner side of the push rod.

[0010] Preferably, one end of the push rod 1 is fixed with a piston 1 which is slidably connected to the inner side of the air cylinder 1, one end of the push rod 2 is fixed with a piston 2 which is slidably connected to the inner side of the air cylinder 2, and one end of the piston 1 is elastically connected to the inner end of the air cylinder 1 through a return spring.

[0011] Preferably, a reversing mechanism for driving the tube body to rotate is further provided on the upper side of the base plate, and the reversing mechanism includes two brackets fixed at both ends of the upper side of the base plate, and two support shafts are rotatably connected between the two brackets. A motor three is installed on one side of one of the brackets, and the driving end of the motor three is fixedly connected to one end of one of the support shafts. A synchronous pulley is fixed to one end of each of the two support shafts, and the two synchronous pulleys are connected by a synchronous belt transmission.

[0012] Preferably, two guide blocks are fixed to the upper end of each movable rod, and a guide rod is slidably connected to the inside of the two guide blocks. A pressure plate is fixed to one end of the two guide rods, and a pressure sensor is connected to the upper end of the movable rod and one side of the pressure plate.

[0013] Preferably, a pin is fixed through the inside of the movable rod, the pin is rotatably connected to the inside of the vertical rod, one end of the pin is fixed with an end plate, and one end of the end plate is elastically connected to the outside of the vertical rod through a torsion spring.

[0014] Preferably, a limiting groove is provided on one side of each vertical rod, and a limiting rod is fixed at a position corresponding to the limiting groove on each movable rod.

[0015] The present invention also provides a basalt fiber composite pipe pressure testing method, which specifically includes the following steps: Step 1: Place the pipe body to be tested on the upper side of the two supporting shafts of the reversing mechanism. The motor that controls the opening and closing mechanism drives the gear shaft to rotate. The gear shaft drives multiple gears on its outer side to rotate. Each gear drives the first rack and the second rack to move in opposite directions through tooth meshing. Each first rack and the second rack respectively drives the two slide bars to move in opposite directions. The two slide bars respectively drive the vertical rods, movable rods, and pressure plates in relative positions to merge. Multiple sets of relative pressure plates can be merged to clamp the two sides of the pipe body. Step 2: The motor 2 of the control feed mechanism drives the screw to rotate, and the screw drives the screw slider and the two trapezoidal push blocks on both sides to move linearly. Through the rolling cooperation between the roller and the inclined surface on one side of the trapezoidal push block, the inclined surface on one side of the trapezoidal push block can apply a horizontal thrust to the push rod 1, thereby causing the push rod 1 to move toward the inside of the cylinder 1. At the same time, the push rod 1 drives the piston 1 at one end to move to compress the air at the inner end of the cylinder 1, so that the air at the inner end of the cylinder 1, the inner end of the cylinder 2 and the inner end of the connecting pipe is compressed. As the pressure rises, the air pressure acts on one end of the second piston, applying a thrust to one end of the second push rod. The second push rod then transmits the thrust to the lower end of the movable rod, which can generate a rotational torque on the movable rod, so that the upper end of the movable rod applies pressure to one side of the tube body through the pressure plate. Since the screw slider of the feed mechanism moves from one end to the other end at a constant speed, during the movement, the pushing mechanism can apply opposite rotational torques to the two movable rods in each group in turn, thereby causing the two pressure plates in each group to apply pressure to both sides of the tube body at the same time. Step three, drive one of the support shafts to rotate through the operation of motor three in the reversing mechanism, and this support shaft drives a synchronous pulley at the end to rotate, and this synchronous pulley drives another synchronous pulley to rotate synchronously through the synchronous belt, so that the other support shaft rotates synchronously, and the two support shafts drive the tube body to rotate when they rotate synchronously, and then perform a reversal operation on the tube body. Then, go through the above steps again and perform press tests on different positions on the outside of the reversing tube body in turn.

[0016] The present invention provides a basalt fiber composite pipe pressure testing device and method through improvements, which have the following improvements and advantages compared with the prior art: First: The present invention enables the screw slider in the feed mechanism and the two trapezoidal push blocks on both sides of it to move in a straight line. During the movement, the two trapezoidal push blocks can apply opposite rotational torques to the two movable rods in each group in turn through the pushing mechanism, so that the two pressure plates in each group can apply pressure to both sides of the tube body at the same time. When the screw slider moves from one end to the other, the two pressure plates in each group will press the outside of the tube body once. When testing a tube body with a longer length, pressure tests can be automatically performed on each section of the tube body in turn without frequently switching the position of the tube body, which reduces the operational difficulty during testing and greatly improves the test efficiency.

[0017] Secondly, the present invention uses a reversing mechanism to make the two supporting shafts rotate synchronously. When the two supporting shafts rotate synchronously, they can drive the tube body to rotate, so that the tube body can be reversed. Then, the above steps are repeated to perform press tests on different positions on the outside of the reversed tube body in turn, which further simplifies the operating process in the test and realizes the function of quickly switching the tube body angle, thereby further improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective; Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention; Figure 3 This is a schematic structural diagram of the present invention from a third viewing angle; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the structure of the present invention in a partially disassembled state; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at C in the middle; Figure 9 It is a structural schematic diagram of the pipe body in the test state in the present invention.

[0020] Reference numerals: 1. Bottom plate; 2. Housing; 3. Sliding rod; 4. Vertical rod; 5. Movable rod; 6. Pressure plate; 7. Pressure sensor; 8. Pin; 9. End plate; 10. Torsion spring; 11. Limit rod; 12. Limit slot; 13. Guide rod; 14. Guide block; 101. Motor 1; 102. Gear shaft; 103. Gear; 104. First rack; 105. Second rack; 201. Cylinder 1; 202. Cylinder 2; 203. Piston 2; 204 , push rod 2; 205, piston 1; 206, push rod 1; 207, roller; 208, adjusting screw; 209, adjusting nut; 210, guide groove; 211, connecting pipe; 212, return spring; 301, motor 2; 302, screw rod; 303, screw rod slider; 304, trapezoidal push block; 305, slide bar; 401, bracket; 402, motor 3; 403, support shaft; 404, synchronous pulley; 405, synchronous belt. DETAILED DESCRIPTION

[0021] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The present invention provides a basalt fiber composite pipe pressure testing device and method through improvement. The technical solution of the present invention is: Example 1: Figures 1 to 9 As shown, the embodiment of the present invention provides a basalt fiber composite pipe pressure testing device and method, including a base plate 1, a shell 2 is fixed on the upper side of the base plate 1, a plurality of sliding rods 3 are slidably inserted on both sides of the shell 2, one end of each sliding rod 3 is fixed with a vertical rod 4, the upper end of each vertical rod 4 is rotatably provided with a movable rod 5, the upper end of each movable rod 5 is fixed with two guide blocks 14, the interior of the two guide blocks 14 is penetrated by a guide rod 13 that is slidably connected, a pressure plate 6 is fixed at one end of the two guide rods 13, the upper end of the movable rod 5 and one side of the pressure plate 6 are connected with a pressure sensor 7, and also include an opening and closing mechanism for driving the multiple sliding rods 3 to move, and a pushing mechanism for applying a torsional torque to the multiple movable rods 5 respectively; the pushing mechanism includes a rotating connection The air cylinder 2 202 is connected to the slide rod 3, and the air cylinder 1 201 is fixed on the upper side of the shell 2. One end of the air cylinder 1 201 and the air cylinder 2 202 are respectively slidably inserted with a push rod 1 206 and a push rod 2 204. One end of the push rod 204 is rotatably connected to the lower end of the movable rod 5. The air cylinder 1 201 and the air cylinder 2 202 are connected through a connecting pipe 211; it also includes a feeding mechanism that pushes multiple push rods 206 to move in sequence; one end of the push rod 1 206 is fixed with a piston 1 205 that is slidably connected to the inner side of the air cylinder 1 201, and one end of the push rod 2 204 is fixed with a piston 203 that is slidably connected to the inner side of the air cylinder 2 202. One end of the piston 1 205 is elastically connected to the inner end of the air cylinder 1 201 through a return spring 212.

[0023] Furthermore, the feeding mechanism includes a second motor 301 mounted on one end of the upper side of the housing 2, a screw rod 302 is fixed to the driving end of the second motor 301, the end of the screw rod 302 is rotatably connected to the other end of the upper side of the housing 2, and the outer side of the screw rod 302 is threadedly connected to a screw slider 303, two trapezoidal push blocks 304 are symmetrically fixed on both sides of the screw slider 303, a slide bar 305 is fixed on the upper side of the housing 2, and the lower side of the screw slider 303 is slidably adapted to the outer side of the slide bar 305; The two trapezoidal push blocks 304 are driven to move by the screw slider 303 in the feed mechanism. In the process of the two trapezoidal push blocks 304 moving from one end of the screw rod 302 to the other end, the two movable rods 5 in each group can be applied with opposite rotational torque in turn through the pushing mechanism, so that the two pressure plates 6 in each group can apply pressure to both sides of the tube body at the same time. When the screw slider 303 moves from one end to the other end, the two pressure plates 6 in each group will press the outer side of the tube body once. When testing a tube body with a long length, pressure tests can be automatically performed on each section of the tube body in turn without frequently switching the position of the tube body, which reduces the difficulty of operation during testing and greatly improves the test efficiency.

[0024] Furthermore, the opening and closing mechanism includes a motor 101 installed at one end of the outer side of the housing 2, a plurality of first racks 104 fixed to one end of a plurality of slide bars 3 on one side, and a plurality of second racks 105 fixed to one end of a plurality of slide bars 3 on the other side. The driving end of the motor 101 is fixed with a gear shaft 102 extending to the inner side of the housing 2. A gear 103 is fixed to the outer side of the gear shaft 102 at a position corresponding to each first rack 104 and second rack 105. Both sides of each gear 103 are respectively engaged with the first rack 104 and second rack 105 at the corresponding position. The operation of the motor 101 of the opening and closing mechanism drives the gear shaft 102 to rotate, and the gear shaft 102 drives multiple gears 103 on its outside to rotate. When each gear 103 rotates, it can drive the first rack 104 and the second rack 105 to move in opposite directions through the engagement of the teeth. Each first rack 104 and the second rack 105 respectively drives the two slide bars 3 to move in opposite directions. Therefore, when the gear shaft 102 drives multiple gears 103 to rotate synchronously, it can drive multiple relative slide bars 3 to move toward the inside of the shell 2 at the same time, thereby driving the relative vertical bars 4, movable bars 5, and pressure plates 6 to merge. Multiple groups of relative pressure plates 6 can be merged to clamp the two sides of the tube body.

[0025] Furthermore, one end of the push rod 206 is threadedly connected to an adjusting screw 208, and one end of the adjusting screw 208 is rotatably connected to a roller 207. One end of the push rod 206 is also rotatably connected to an adjusting nut 209, and the adjusting nut 209 is threadedly connected to the outer side of the adjusting screw 208. The outer side of the adjusting screw 208 is also provided with a plurality of guide grooves 210. The inner side of the push rod 206 is fixed with a convex strip that slides and fits with the inner side of the guide groove 210. By turning the adjusting nut 209, the adjusting nut 209 drives the adjusting screw 208 to move telescopically through the thread. When the adjusting screw 208 extends outward, the roller 207 can contact the inclined surface on one side of the trapezoidal push block 304 earlier, thereby pushing the push rod 1 206 to move a longer distance toward the inside of the air cylinder 1 201, and vice versa. The push rod 1 206 moves a shorter distance toward the inside of the air cylinder 1 201. When the moving distance is longer, the air pressure at the inner end of the air cylinder 2 202 will be higher, thereby making the torsional torque applied to the movable rod 5 greater, and thus making the pressure applied by the pressure plate 6 to the outside of the tube body greater. At the same time, by comparing the pressure detection readings of the pressure sensor 7, the pressure applied by the pressure plate 6 to the outside of the tube body during each press test can be quickly adjusted, thereby improving the accuracy of the test data.

[0026] Furthermore, a reversing mechanism for driving the tube body to rotate is further provided on the upper side of the base plate 1. The reversing mechanism includes two brackets 401 fixed at both ends of the upper side of the base plate 1. Two support shafts 403 are rotatably connected between the two brackets 401. A motor 3 402 is installed on one side of one of the brackets 401. The driving end of the motor 3 402 is fixedly connected to one end of one of the support shafts 403. A synchronous pulley 404 is fixed to one end of each of the two support shafts 403. The two synchronous pulleys 404 are connected to each other through a synchronous belt 405. Through the reversing mechanism, the two support shafts 403 rotate synchronously. When the two support shafts 403 rotate synchronously, they can drive the tube body to rotate, so that the tube body can be reversed. Then, through the above steps again, the different positions on the outside of the reversed tube body are pressed in turn for testing, which further simplifies the operating process in the test and realizes the function of quickly switching the tube body angle, thereby further improving the test efficiency.

[0027] Furthermore, a pin 8 is fixed through the interior of the movable rod 5, and the pin 8 is rotatably connected to the interior of the vertical rod 4. An end plate 9 is fixed to one end of the pin 8, and one end of the end plate 9 is elastically connected to the outer side of the vertical rod 4 through a torsion spring 10. It should be noted that the pin 8 is fixed inside the movable rod 5, and the pin 8 is rotatably connected to the inside of the vertical rod 4. The torsion spring 10 can apply a small torsional torque to the pin 8 through the end plate 9. The pin 8 transmits the torsional torque to the movable rod 5, so that the movable rod 5 generates a small torsional torque, and the limiting rod 11 at the lower end of the movable rod 5 can be tightly attached to the inner side of the limiting groove 12, thereby keeping the movable rod 5 and the vertical rod 4 in the same straight line, thereby ensuring that each group of pressure plates 6 can apply equal or similar pressure to the outside of the tube body, thereby improving the accuracy of the test.

[0028] Example 2: This example also provides a basalt fiber composite pipe pressure testing method, which specifically includes the following steps: Step 1: Place the tube to be tested on the upper side of the two support shafts 403 of the reversing mechanism. The motor 101 that controls the opening and closing mechanism drives the gear shaft 102 to rotate. The gear shaft 102 drives multiple gears 103 on its outer side to rotate. Each gear 103 drives the first rack 104 and the second rack 105 to move in opposite directions through tooth meshing. Each first rack 104 and the second rack 105 respectively drives the two slide bars 3 to move in opposite directions. The two slide bars 3 respectively drive the vertical bars 4, the movable bars 5, and the pressure plates 6 in the relative positions to merge. Multiple groups of relative pressure plates 6 can be merged to clamp the two sides of the tube. Step 2: The motor 2 301 of the control feeding mechanism drives the screw rod 302 to rotate, and the screw rod 302 drives the screw slider 303 and the two trapezoidal push blocks 304 on both sides to move linearly. Through the rolling cooperation between the roller 207 and the inclined surface on one side of the trapezoidal push block 304, the inclined surface on one side of the trapezoidal push block 304 can apply a horizontal thrust to the push rod 1 206, so that the push rod 1 206 moves toward the inside of the cylinder 1 201. At the same time, the push rod 1 206 drives the piston 1 205 at one end to move to compress the air at one end of the cylinder 1 201, so that the inner end of the cylinder 1 201 and the cylinder 2 20 2 and the air pressure inside the connecting tube 211 increases, and the air pressure acts on one end of the second piston 203, applying a thrust to one end of the second push rod 204. The second push rod 204 then transmits the thrust to the lower end of the movable rod 5, which can generate a rotational torque on the movable rod 5, so that the upper end of the movable rod 5 applies pressure to one side of the tube body through the pressure plate 6. Since the screw slider 303 of the feed mechanism moves from one end to the other at a constant speed, during the movement, the two movable rods 5 in each group can be sequentially applied with opposite rotational torques through the pushing mechanism, thereby causing the two pressure plates 6 in each group to simultaneously apply pressure to both sides of the tube body. Step three, one of the support shafts 403 is driven to rotate by the operation of the motor 3 402 in the reversing mechanism, and this support shaft 403 drives a synchronous pulley 404 at the end to rotate, and this synchronous pulley 404 drives another synchronous pulley 404 to rotate synchronously through the synchronous belt 405, so that the other support shaft 403 rotates synchronously. When the two support shafts 403 rotate synchronously, the tube body is driven to rotate, and the tube body is reversed. Then, the above steps are repeated to perform press tests on different positions on the outside of the reversed tube body in turn.

[0029] Working principle: When testing the tube body, the tube body to be tested is placed on the upper side of the two support shafts 403 of the reversing mechanism, and then the motor 101 that controls the opening and closing mechanism is operated to drive the gear shaft 102 to rotate, and the gear shaft 102 drives the multiple gears 103 on its outside to rotate. When each gear 103 rotates, it can drive the first rack 104 and the second rack 105 to move in opposite directions through tooth meshing. Each first rack 104 and second rack 105 respectively drives the two slide bars 3 to move in opposite directions. Therefore, when the gear shaft 102 drives the multiple gears 103 to rotate synchronously, it can drive the multiple slide bars 3 in relative positions to move toward the inside of the shell 2 at the same time, thereby driving the relative vertical rods 4, movable rods 5, and pressure plates 6 to merge. The combination of multiple groups of pressure plates 6 in relative positions can clamp the two sides of the tube body. It should be noted that the motor 101 can accurately control the output torque so that the multiple pressure plates 6 only exert a very small pressure on the outside of the tube body, which plays a role in preliminary positioning. In addition, the motor 101 has a brake self-locking function to prevent the gear shaft 102 from rotating in the opposite direction. After the multiple pressing plates 6 have preliminarily clamped and positioned the two sides of the tube body, the motor 2 301 of the feed mechanism is controlled to run and drive the screw rod 302 to rotate at a uniform speed. The screw rod 302 drives the screw slider 303 to move linearly along the outer side of the slide bar 305 through the thread. The screw slider 303 drives the two trapezoidal push blocks 304 on both sides to move linearly. Since the trapezoidal push block 304 is an isosceles trapezoidal structure, one side of the trapezoidal push block 304 has two symmetrical inclined surfaces. When one of the inclined surfaces is aligned with the pushing mechanism, When the roller 207 in the cylinder 201 contacts, the inclined surface on one side of the trapezoidal push block 304 can apply a horizontal thrust to the push rod 1 206 through the roller 207 through the rolling cooperation between the roller 207 and the inclined surface, so that the push rod 1 206 moves toward the inside of the cylinder 1 201, and the push rod 1 206 drives the piston 1 205 at one end to move. It should be noted that the inner end of the cylinder 1 201, the inner end of the cylinder 202 and the inner side of the connecting pipe 211 are all filled with air. When the push rod 1 When the first 206 drives the piston 1 205 to move, the air in the inner end of the air cylinder 1 201 is compressed, thereby increasing the air pressure at the inner end of the air cylinder 1 201, the inner end of the second air cylinder 202 and the inner side of the connecting tube 211. The air pressure acts on one end of the piston 203, thereby applying a thrust to one end of the push rod 204. The push rod 204 then transmits the thrust to the lower end of the movable rod 5, which can generate a rotational torque for the movable rod 5, thereby causing the upper end of the movable rod 5 to have a tendency to rotate toward the position where the tube body is located. The upper end of the movable rod 5 applies pressure to one side of the tube body through the pressure plate 6. Since the two trapezoidal push blocks 304 on both sides of the screw slider 303 simultaneously apply thrust to the two push rods 1 206 in the relative positions, a movable rod 5 in the relative position also generates a rotational torque, thereby causing a pressure plate 6 in the relative position to press on the other side of the tube body. Pressure is applied to both sides of the tube body by the two pressure plates 6 in the relative positions, so that a press test can be performed on the specified position of the tube body. Since the screw slider 303 of the feeding mechanism moves from one end to the other end at a constant speed, during the movement, the two movable rods 5 in each group can be sequentially applied with a reverse rotational torque by the pushing mechanism, thereby sequentially causing the two pressure plates 6 in each group to apply pressure to both sides of the tube body at the same time. When the screw slider 303 moves from one end to the other end, the two pressure plates 6 in each group press the outer side of the tube body once. When testing a long tube body, pressure tests can be automatically performed on each section of the tube body in sequence without frequently switching the position of the tube body, thereby reducing the difficulty of operation during testing and significantly improving the testing efficiency. The motor 3 402 in the reversing mechanism can also be controlled to drive one of the support shafts 403 to rotate, and this support shaft 403 drives a synchronous pulley 404 at the end to rotate. This synchronous pulley 404 drives another synchronous pulley 404 to rotate synchronously through a synchronous belt 405, thereby driving the other support shaft 403 to rotate synchronously. When the two support shafts 403 rotate synchronously, they can drive the tube body to rotate, so that the tube body can be reversed. Then, the above steps are repeated to perform press tests on different positions on the outside of the reversed tube body in turn.

[0030] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A basalt fiber composite pipe pressure testing device, comprising a base plate (1), a housing (2) being fixed on the upper side of the base plate (1), characterized in that: A plurality of slide bars (3) are slidably inserted on both sides of the housing (2), a vertical bar (4) is fixed to one end of each slide bar (3), and a movable bar (5) is rotatably provided on the upper end of each vertical bar (4), and further comprises an opening and closing mechanism for driving the plurality of slide bars (3) to move, and a pushing mechanism for applying a torsional torque to the plurality of movable bars (5); The pushing mechanism includes an air cylinder 2 (202) rotatably connected to the slide rod (3), and an air cylinder 1 (201) fixed on the upper side of the shell (2), wherein one end of the air cylinder 1 (201) and the air cylinder 2 (202) are respectively slidably inserted with a push rod 1 (206) and a push rod 2 (204), and one end of the push rod 2 (204) is rotatably connected to the lower end of the movable rod (5), and the air cylinder 1 (201) and the air cylinder 2 (202) are connected via a connecting pipe (211); It also includes a feeding mechanism that pushes multiple push rods (206) to move in sequence.

2. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: The feeding mechanism comprises a second motor (301) mounted on one end of the upper side of the housing (2), a screw rod (302) being fixed to the driving end of the second motor (301), an end of the screw rod (302) being rotatably connected to the other end of the upper side of the housing (2), and a screw rod slider (303) being threadedly connected to the outer side of the screw rod (302), two trapezoidal push blocks (304) being symmetrically fixed on both sides of the screw rod slider (303), a slide bar (305) being fixed on the upper side of the housing (2), and a lower side of the screw rod slider (303) being slidably adapted to the outer side of the slide bar (305).

3. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: The opening and closing mechanism comprises a motor (101) mounted on one end of the outer side of the housing (2), a plurality of first racks (104) fixed to one end of a plurality of slide bars (3) on one side, and a plurality of second racks (105) fixed to one end of a plurality of slide bars (3) on the other side. The driving end of the motor (101) is fixed with a gear shaft (102) extending to the inner side of the housing (2). A gear (103) is fixed on the outer side of the gear shaft (102) at a position corresponding to each first rack (104) and second rack (105). Both sides of each gear (103) are respectively engaged with the first rack (104) and second rack (105) at the corresponding position.

4. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: One end of the push rod (206) is threadedly connected to an adjusting screw (208), and one end of the adjusting screw (208) is rotatably connected to a roller (207). One end of the push rod (206) is also rotatably connected to an adjusting nut (209), and the adjusting nut (209) is threadedly connected to the outside of the adjusting screw (208). The outside of the adjusting screw (208) is also provided with a plurality of guide grooves (210), and the inner side of the push rod (206) is fixed with a convex strip that is slidably adapted to the inner side of the guide groove (210).

5. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: One end of the push rod 1 (206) is fixed with a piston 1 (205) which is slidably connected to the inner side of the air cylinder 1 (201), and one end of the push rod 2 (204) is fixed with a piston 2 (203) which is slidably connected to the inner side of the air cylinder 2 (202). One end of the piston 1 (205) is elastically connected to the inner end of the air cylinder 1 (201) through a return spring (212).

6. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: The upper side of the base plate (1) is also provided with a reversing mechanism for driving the tube body to rotate, the reversing mechanism comprising two brackets (401) fixed at both ends of the upper side of the base plate (1), two support shafts (403) being rotatably connected between the two brackets (401), a motor three (402) being installed on one side of one of the brackets (401), a driving end of the motor three (402) being fixedly connected to one end of one of the support shafts (403), a synchronous pulley (404) being fixed to one end of each of the two support shafts (403), and the two synchronous pulleys (404) being connected via a synchronous belt (405).

7. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: Two guide blocks (14) are fixed to the upper end of each movable rod (5), and a guide rod (13) is slidably connected to the interior of the two guide blocks (14). A pressure plate (6) is fixed to one end of the two guide rods (13), and a pressure sensor (7) is connected to the upper end of the movable rod (5) and one side of the pressure plate (6).

8. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: A pin shaft (8) is fixed through the interior of the movable rod (5), and the pin shaft (8) is rotatably connected to the interior of the vertical rod (4). An end plate (9) is fixed to one end of the pin shaft (8), and one end of the end plate (9) is elastically connected to the outer side of the vertical rod (4) through a torsion spring (10).

9. The basalt fiber composite pipe pressure testing device according to claim 1, characterized in that: A limiting slot (12) is provided on one side of each vertical rod (4), and a limiting rod (11) is fixed at a position corresponding to the limiting slot (12) on each movable rod (5).

10. A basalt fiber composite pipe pressure testing method, according to the basalt fiber composite pipe pressure testing device and method according to any one of claims 1-9, characterized in that: The following steps are involved: Step 1: Place the tube body to be tested on the upper side of the two supporting shafts (403) of the reversing mechanism, and the motor 1 (101) that controls the opening and closing mechanism drives the gear shaft (102) to rotate, and the gear shaft (102) drives multiple gears (103) on the outside thereof to rotate, and each gear (103) drives the first rack (104) and the second rack (105) to move in the opposite direction through tooth meshing, and each first rack (104) and the second rack (105) respectively drive the two slide bars (3) to move in the opposite direction, and the two slide bars (3) respectively drive the vertical bars (4), the movable bars (5), and the pressure plates (6) in the relative positions to merge, and multiple groups of relative pressure plates (6) can be merged to clamp the two sides of the tube body; Step 2: The second motor (301) of the control feeding mechanism drives the screw (302) to rotate, and the screw (302) drives the screw slider (303) and the two trapezoidal push blocks (304) on both sides thereof to move linearly. Through the rolling cooperation between the roller (207) and the inclined surface on one side of the trapezoidal push block (304), the inclined surface on one side of the trapezoidal push block (304) can apply a horizontal thrust to the push rod (206), thereby causing the push rod (206) to move toward the inside of the cylinder (201). At the same time, the push rod (206) drives the piston (205) at one end to move to compress the air at one end of the cylinder (201), so that the inner end of the cylinder (201) and the cylinder (201) are compressed. The air pressure at one end of the inner side of the second (202) and the inner side of the connecting tube (211) increases, and the air pressure acts on one end of the second piston (203), applying a thrust to one end of the second push rod (204), and the second push rod (204) then transmits the thrust to the lower end of the movable rod (5), so that the movable rod (5) generates a rotational torque, so that the upper end of the movable rod (5) applies pressure to one side of the tube body through the pressure plate (6). Since the screw slider (303) of the feed mechanism moves from one end to the other end at a uniform speed, during the movement, the two movable rods (5) in each group can be applied with a reverse rotational torque in turn through the pushing mechanism, so that the two pressure plates (6) in each group can apply pressure to both sides of the tube body at the same time; Step 3: The motor 3 (402) in the reversing mechanism is operated to drive one of the support shafts (403) to rotate. The support shaft (403) drives a synchronous pulley (404) at the end to rotate. The synchronous pulley (404) drives another synchronous pulley (404) to rotate synchronously through the synchronous belt (405), so that the other support shaft (403) rotates synchronously. When the two support shafts (403) rotate synchronously, the tube body is driven to rotate, and the tube body is reversed. Then, the above steps are repeated to perform a press test on different positions on the outside of the reversing tube body.

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