Pressure-bearing detection device for pressure pipeline of special equipment

Abstract

The invention relates to the technical field of pipeline detection, and particularly discloses a special equipment pressure pipeline pressure bearing detection device which comprises a base, two fixing frames capable of being adjusted in a sliding mode are installed on the surface of the base, and the two fixing frames can fix a pipeline in a sealed mode through clamping grooves formed in the side walls. And water conveying pipes are fixedly installed on the outer walls of the two fixing frames correspondingly, the two water conveying pipes, the two fixing frames, the pipeline and external water supply equipment can form a water flow loop, and clamping blocks are arranged on the two sides of the pipeline correspondingly. Stable radial pressure is applied to the outside of the pipeline through the pressurizing assembly, water pressure detection is performed on the inner wall of the pipeline, whether the pressure resistance of the pipeline reaches the standard or not can be detected by simulating external environment factors, and it is ensured that internal transportation work can still be completed on the premise that the pipeline is subjected to external radial loads; and the pipeline can be better suitable for extreme use scenes faced by special equipment, and the capability of guaranteeing the personal and property safety of workers is improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, specifically to a pressure testing device for pressure pipelines of special equipment. Background Technology

[0002] Special equipment refers to boilers, pressure vessels (including gas cylinders), pressure pipelines, elevators, lifting machinery, passenger ropeways, large amusement facilities, special motor vehicles for use in factories (plants), and other special equipment that pose significant risks to personal and property safety as stipulated by laws and administrative regulations. Among them, pressure pipelines, due to their need to withstand the pressure of the internal medium, have relatively strict requirements for pressure resistance testing to prevent accidents such as leakage and rupture.

[0003] For example, Chinese Patent No. CN117907094B discloses a pipeline pressure testing device, including a base and a transport assembly, which includes a forward rotating shaft with a movable seat on it, and a sleeve shaft slidably fitted on the reverse rotating shaft. Each sleeve shaft has two sliders, and the sliders are connected to a lifting plate through a cross rod assembly. A clamping seat is elastically connected to the top surface of the lifting plate, and clamping elements are slidably fitted on the top surface of the clamping seat. A lever plate is rotatably mounted above the lifting plate. This invention can automatically complete the transport and testing of pipelines, and can also test multiple pipelines simultaneously, improving testing efficiency and ensuring good testing results.

[0004] However, the aforementioned pipeline inspection devices lack effective testing devices that can simulate the loads in actual engineering projects. Furthermore, the inspection results for pipelines are often detached from the limitations of external environmental factors, applying only a single axial load to the pipeline. This results in significant discrepancies between the inspection results and actual use, causing pipelines that can pass the single load test to crack or deform under the influence of external environmental factors during actual use, posing a serious threat to the personal and property safety of workers. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure testing device for pressure pipelines of special equipment to solve at least one technical problem existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressure testing device for pressure pipelines of special equipment, comprising a base, two adjustable fixing frames mounted on the surface of the base, the two fixing frames sealing and fixing the pipeline through slots opened on the side walls, water supply pipes fixedly installed on the outer walls of the two fixing frames, and the two water supply pipes, the two sets of fixing frames, the pipelines and the external water supply equipment forming a water flow loop, and clamping blocks provided on both sides of the pipelines;

[0007] It also includes a pressurizing assembly for driving the two clamping blocks to apply a stable clamping force to the outer wall of the pipe;

[0008] It also includes a detection component, which is used to detect whether the pipe is deformed under the clamping action of the clamping block.

[0009] Preferably, the pressurizing assembly includes two sets of sliding seats, and the two sliding seats are respectively located on the base surface on both sides of the pipe. The sliding seats are L-shaped and a fixed shaft is fixedly installed on the top surface of the base plate. A sliding frame is fixedly installed at the top of the fixed shaft. A sliding block that can be horizontally slidably adjusted is installed in the sliding frame. The clamping block is slidably installed in a groove opened in the side wall of the sliding block, and a spring is provided between the sliding block and the clamping block.

[0010] Preferably, a sliding box is installed on the side wall of the sliding seat side plate and is sleeved outside the sliding frame and can slide, and the fixed shaft passes through the bottom of the sliding box, and a connecting rod is rotatably installed between the inner side wall of the sliding frame and the side wall of the sliding block.

[0011] Preferably, two sets of mounting brackets are fixedly installed on the top surface of the base. A motor is fixedly installed on the side wall of the mounting bracket. A rotating disk is fixedly installed at the end of the motor's main shaft that passes through the mounting bracket. A slidably adjustable limiting shaft is installed on the side wall of the rotating disk. A limiting block is slidably installed in a groove opened on the outer wall of the sliding box. A threaded rod that passes through the limiting block is rotatably installed in the side wall of the sliding box. The through hole of the limiting block is a threaded hole that meshes with the thread on the outer wall of the threaded rod. A rotating rod is rotatably installed between the limiting shaft and the limiting block.

[0012] Preferably, the detection component includes a sliding groove formed on the outer wall of the sliding seat side plate, a sliding rod that can slide in the sliding groove is fixedly installed on the outer wall of the sliding box, a rotating handle is rotatably installed on the outer wall of the sliding seat side plate, a tension spring is provided between the end of the rotating handle away from the sliding rod and the rotating handle, and two fixing pins for limiting the rotation of the rotating handle are also provided on the outer wall of the sliding seat side plate, and a pressure alarm is provided in the fixing pin located below.

[0013] Preferably, the detection assembly further includes a crossbar installed in the fixed frame and adjustable by sliding, the end of the crossbar near the pipe is provided with a sealing plug, and the outer wall of the crossbar is provided with an image acquisition device.

[0014] Preferably, the side wall of the rotating disk has a through groove for the sliding of the limiting shaft, and the end of the limiting shaft that protrudes from the rotating disk is threaded, and the limiting shaft can be fixedly installed in the through groove by bolts.

[0015] Preferably, the water tank of the external water supply device contains a soluble fluorescent substance, and the image acquisition device contains a light source.

[0016] Preferably, a cylinder is fixedly mounted on the surface of the base, and the power shaft of the cylinder is fixedly connected to the fixing frame.

[0017] Preferably, the connecting rod cannot cross the horizontal line when it rotates, and always has a certain angle with the horizontal line.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] I. This invention applies stable radial pressure to the outside of the pipeline through a pressurizing component while simultaneously performing water pressure testing on the inner wall of the pipeline. This allows for the testing of the pipeline's pressure resistance performance by simulating external environmental factors, ensuring that the pipeline can still complete internal transportation work under external radial loads. This enables the pipeline to better adapt to the extreme usage scenarios faced by special equipment and enhances the protection of the personal and property safety of workers.

[0020] II. This invention utilizes a flexible clamping mechanism that slowly increases pressure on the outer wall of the pipe. This reduces damage to the pipe's outer wall during pressure testing, preventing damage caused by violent testing. When the spring is compressed to its limit, the clamping block slides to its limit position within the groove on the side wall of the sliding block. At this point, the flexible contact between the clamping block and the sliding block changes to a rigid contact, ensuring stable clamping of the pipe's outer wall by both clamping blocks. This prevents the spring force from affecting the stability of the clamping force. If the pipe does not deform significantly under continuous and stable pressure, the clamping blocks maintain constant pressure on the pipe's outer wall until the test is completed. If the pressure-bearing part of the pipe's outer wall undergoes inward deformation, the clamping blocks continue to move closer together under the action of the spring. By transforming the rigid clamping force into a flexible clamping force and using the spring to distribute part of the clamping force, the pipe is protected from further deformation, improving the safety of the device during use.

[0021] Third, by switching the clamping force of the clamping block on the pipeline between two states of stable pressure and impact pressure, this invention simulates the external continuous pressure or instantaneous pressure that the pipeline may be subjected to when transporting its internal medium. This enables qualified pipelines to maintain the transport of their internal medium even in relatively harsh environments, further improving the stability of the pipeline when used in extreme scenarios. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side cross-sectional view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the three-dimensional structure in this invention;

[0025] Figure 4 This is a cross-section of the pressurization component of the present invention;

[0026] Figure 5 This is a three-dimensional cross-sectional view of the pressurization component in this invention;

[0027] Figure 6 This is a schematic diagram of the sliding seat sliding in this invention;

[0028] Figure 7 This is a comparison diagram of the limit shaft before and after adjustment in this invention.

[0029] In the diagram: 1. Base; 2. Fixing frame; 3. Pipe; 4. Sliding seat; 5. Sliding box; 6. Mounting bracket; 7. Sliding frame; 8. Fixing shaft; 9. Sliding block; 10. Clamping block; 11. Connecting rod; 12. Limiting block; 13. Threaded rod; 14. Rotating rod; 15. Limiting shaft; 16. Rotating disk; 17. Motor; 18. Sliding rod; 19. Tension spring; 20. Rotating handle; 21. Crossbar; 22. Water pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 7 The present invention provides a technical solution: a pressure testing device for pressure pipelines of special equipment, including a base 1, two adjustable fixing frames 2 are installed on the surface of the base 1, the two fixing frames 2 can seal and fix the pipeline 3 through the slots opened on the side wall, water supply pipes 22 are fixedly installed on the outer wall of the two fixing frames 2, and the two water supply pipes 22, the two sets of fixing frames 2, the pipeline 3 and the external water supply equipment can form a water flow loop, and clamping blocks 10 are provided on both sides of the pipeline 3;

[0032] It also includes a pressurizing assembly, which is used to drive the two clamping blocks 10 to apply a stable clamping force to the outer wall of the pipe 3;

[0033] It also includes a detection component, which is used to detect whether the pipe 3 is deformed under the clamping action of the clamping block 10.

[0034] When using this device, firstly, the pipe 3 is inserted into the slot in the fixing bracket 2 on one side. Adjust the fixing brackets 2 on both sides to slide closer to each other along the base 1 until both ends of the pipe 3 are inserted into the slots of the fixing brackets 2 on both sides. Seal the two ends of the pipe 3 with the sealing rings in the slots. Then, water is injected into one side of the water supply pipe 22 through the external water supply equipment, and the other side of the water supply pipe 22 is closed through the safety valve. At the same time, the air in the pipe 3 is discharged through the exhaust valve until the pipe 3 is full of water and the water pressure in the pipe 3 reaches 1.5 times the preset working water pressure of the pipe 3. Maintain this pressure for ten minutes. At the same time, the clamping components drive the clamping blocks 10 on both sides of the pipe 3 to move closer to each other, slowly pressurizing the outer wall of the pipe 3 until the pressure reaches the preset allowable stress of the pipe 3 material. Stop pressurizing and maintain the pressure for ten minutes. This allows the pipe 3 to be tested for its internal pressure resistance while being affected by external pressure, to ensure that the pipe 3 can be used normally in special environments. The stability of the pipe 3 under two pressure loads is tested by the detection components, thus completing the multi-load test of the pipe 3.

[0035] In this way, by applying stable radial pressure to the outside of pipe 3 through the pressurization component, while conducting water pressure testing on the inner wall of pipe 3, the pressure resistance performance of pipe 3 can be tested by simulating external environmental factors. This ensures that pipe 3 can still complete internal transportation work under the premise of being subjected to external radial load, making pipe 3 more suitable for the extreme usage scenarios faced by special equipment and improving the ability to protect the personal and property safety of workers.

[0036] Furthermore, the pressurization assembly includes two sets of sliding seats 4, and the two sliding seats 4 are respectively located on the surface of the base 1 on both sides of the pipe 3. The sliding seat 4 is L-shaped and a fixed shaft 8 is fixedly installed on the top surface of the base plate. A sliding frame 7 is fixedly installed at the top of the fixed shaft 8. A sliding block 9 that can be horizontally slidably adjusted is installed in the sliding frame 7. A clamping block 10 is slidably installed in the groove opened in the side wall of the sliding block 9, and a spring is provided between the sliding block 9 and the clamping block 10.

[0037] A specific implementation of a pressurization component is provided based on the above embodiments. See details below. Figure 4 When the external components drive the sliding blocks 9 to slide closer to each other within the sliding frame 7, the clamping block 10 first contacts the outer wall of the pipe 3 through the arc groove on its side wall. When the sliding blocks 9 move closer to each other, the spring between the sliding blocks 9 and the clamping block 10 is compressed by the squeezing force until the spring is compressed to the limit and the clamping block 10 slides to the limit position in the groove on the side wall of the sliding block 9. At this time, the pressure of the clamping block 10 on the outer wall of the pipe 3 reaches the preset allowable stress. By limiting the displacement of the sliding blocks 9, the purpose of applying stable pressure to the outer wall of the pipe 3 can be achieved.

[0038] In this way, by slowly increasing the pressure on the outer wall of pipe 3 and using flexible clamping, the clamping block 10 can reduce damage to the outer wall of pipe 3 during pressure testing, avoiding damage to pipe 3 caused by violent testing. When the spring is compressed to its limit, the clamping block 10 slides to its limit position in the groove on the side wall of the sliding block 9. At this point, the flexible contact between the clamping block 10 and the sliding block 9 changes to rigid contact, ensuring that the clamping blocks 10 on both sides can stably clamp the outer wall of pipe 3, avoiding the spring force affecting the stability of the clamping force. If pipe 3 does not deform significantly under continuous and stable pressure, the clamping block 10 maintains the pressure on the outer wall of pipe 3 until the test is completed. If the pressure-bearing part of the outer wall of pipe 3 undergoes inward deformation, the clamping blocks 10 continue to move closer to each other under the action of the spring. On the basis of changing the rigid clamping force to flexible clamping, the spring shares part of the clamping force, thereby protecting pipe 3 from further deformation and improving the safety of the device during use.

[0039] Furthermore, a sliding box 5 is installed on the side wall of the sliding seat 4, which is sleeved outside the sliding frame 7 and can slide, and the fixed shaft 8 passes through the bottom of the sliding box 5. A connecting rod 11 is rotatably installed between the inner side wall of the sliding frame 7 and the side wall of the sliding block 9.

[0040] As can be seen from the above implementation method, when the external structure drives the sliding box 5 to slide, see the specific details. Figure 4 When the sliding box 5 slides downward, the position of the sliding frame 7 changes, and the connecting rod 11 rotates around the connection point with the sliding block 9, increasing the horizontal distance between the two ends of the connecting rod 11, thereby pushing the two sliding blocks 9 closer to each other. When the sliding box 5 slides upward, the connecting rod 11 rotates in the opposite direction around the connection point with the sliding block 9, decreasing the horizontal distance between the two ends of the connecting rod 11, thereby pulling the two sliding blocks 9 away from each other, completing the sliding adjustment of the sliding block 9 described above.

[0041] In this way, by driving the sliding box 5 to slide up and down along the side wall of the sliding frame 7, the horizontal distance between the two ends of the connecting rod 11 can be changed to adjust the sliding of the sliding blocks 9 on both sides. This allows the reaction force of the clamping block 10 when it clamps the pipe 3 to be distributed by multiple connecting rods 11 and their connecting shafts, thereby improving the stability of the device.

[0042] Furthermore, two sets of mounting brackets 6 are fixedly installed on the top surface of the base 1. A motor 17 is fixedly installed on the side wall of the mounting bracket 6. A rotating disk 16 is fixedly installed at the end of the motor 17 through the mounting bracket 6. A sliding adjustable limit shaft 15 is installed on the side wall of the rotating disk 16. A limit block 12 is slidably installed in the groove opened on the outer side wall of the sliding box 5. A threaded rod 13 that passes through the limit block 12 is rotatably installed in the side wall of the sliding box 5. The through hole of the limit block 12 is set as a threaded hole that meshes with the thread on the outer wall of the threaded rod 13. A rotating rod 14 is rotatably installed between the limit shaft 15 and the limit block 12.

[0043] As can be seen from the above implementation method, when the motor 17 drives the rotating disk 16 to rotate, it will also drive the limiting shaft 15 to move in a circular motion around the center of the rotating disk 16. See details below. Figure 5 At this time, the rotating disk 16 drives the rotating rod 14 to move together, so that the limiting block 12, which is fixed to the outer wall of the sliding box 5 by the threaded rod 13, can drive the sliding box 5 to slide up and down reciprocally, thus completing the drive for the sliding box 5 to slide up and down reciprocally as described above. Since the extreme position angle of the crank-slider mechanism composed of the rotating disk 16, the limiting shaft 15, and the rotating rod 14 is zero at this time, the up and down reciprocating sliding of the sliding box 5 is uniform, making the pressure applied by the clamping block 10 to the outer wall of the pipe 3 stable, thereby improving the accuracy of the test results. When the two sliding seats 4 slide together along the base 1, see the details. Figure 6 The dotted line in the figure shows the position of the sliding seat 4 after sliding. At this time, the distance between the limiting block 12 and the center of the rotating disk 16 is the shortest under the adjustment of the threaded rod 13. At this time, the extreme position angle of the crank-slider mechanism composed of the rotating disk 16, the limiting shaft 15 and the rotating rod 14 is not zero, so that when the rotating rod 14 drives the sliding box 5 to slide downward, it has a quick return characteristic. That is, at this time, the clamping force of the clamping blocks 10 on the pipe 3 is impact clamping. By impact detection on the outer wall of the pipe 3, it can be detected whether the pipe 3 can maintain the normal transportation of its internal medium under the action of external instantaneous pressure. Furthermore, by changing the impact position, the superposition of stable clamping and impact clamping on the same part of the outer wall of the pipe 3 can be avoided, which would cause damage to the outer wall of the pipe 3. This further simulates the possible impact of the external environment on the pipe 3.

[0044] In this way, by switching the clamping force of the clamping block 10 on the pipe 3 between two states of stable pressure and impact pressure, the external continuous pressure or instantaneous pressure that the pipe 3 may be subjected to when transporting its internal medium is simulated. This allows the qualified pipe 3 to maintain normal transport of its internal medium even in relatively harsh environments, further improving the stability of the pipe 3 when used in extreme scenarios.

[0045] It is worth mentioning that, because the sliding seat 4 changes the vertical sliding distance between the rotating rod 14 and the sliding box 5 during sliding, see details below. Figure 7In the figure, h1 is the vertical sliding distance between the rotating rod 14 and the sliding box 5 when the sliding seat 4 is not sliding, h2 is the vertical sliding distance between the rotating rod 14 and the sliding box 5 after the sliding seat 4 slides, a1 is the highest sliding point between the rotating rod 14 and the sliding box 5 after the sliding seat 4 slides, and b1 is the lowest sliding point between the rotating rod 14 and the sliding box 5 after the sliding seat 4 slides. As can be seen from the figure, when the sliding seat 4 slides, the vertical sliding distance between the rotating rod 14 and the sliding box 5 changes from h1 to h2, which causes the sliding distance of the sliding block 9 to change as well. This causes the clamping force of the clamping block 10 on the outer wall of the pipe 3 to change. At this time, it is necessary to adjust the position of the limiting shaft 15 on the rotating disk 16 so that the limiting shaft 15 slides centrifugally for a certain distance, so that the lowest sliding point between the rotating rod 14 and the sliding box 5 becomes b2 and the highest point becomes a2, thus maintaining the vertical sliding distance between the rotating rod 14 and the sliding box 5 at h1.

[0046] Furthermore, the detection component includes a sliding groove formed on the outer wall of the side plate of the sliding seat 4, a sliding rod 18 fixedly installed on the outer wall of the sliding box 5 that can slide in the sliding groove, a rotating handle 20 rotatably installed on the outer wall of the side plate of the sliding seat 4, a tension spring 19 provided between the end of the rotating handle 20 away from the sliding rod 18 and the rotating handle 20, and two fixing pins for limiting the rotation of the rotating handle 20 are also provided on the outer wall of the side plate of the sliding seat 4, and a pressure alarm is provided in the fixing pin located below.

[0047] As can be seen from the above implementation method, when the pipe 3 is pressurized by the clamping block 10 to the preset allowable stress, that is, when the clamping block 10 slides to the limit position in the groove of the sliding block 9 side wall and the clamping force changes from flexible to rigid, the relative close displacement of the clamping block 10 has reached the limit. At this time, the sliding rod 18 slides down and pulls the rotating handle 20 downward through the tension spring 19 until the rotating handle 20 and the tension spring 19 are in the limit position of the same straight line. If the pipe 3 does not deform during the pressure test, the rotating handle 20 will reset when the sliding box 5 slides upward. If the pipe 3 undergoes inward deformation under the clamping force of the clamping blocks 10 on both sides, the two sliding blocks 9 continue to move closer to each other, driving the sliding box 5 to continue to slide downward, so that the rotating handle 20 and the tension spring 19 cross the limit position and quickly rotate downward under the action of the tension spring 19 and hit the fixing pin below, triggering the pressure alarm to warn the staff and completing the stability test of the pipe 3 during the pressure test.

[0048] Furthermore, the detection assembly also includes a crossbar 21 that is installed inside the fixed frame 2 and can be slidably adjusted. The end of the crossbar 21 near the pipe 3 is provided with a sealing plug, and the outer wall of the crossbar 21 is provided with an image acquisition device.

[0049] As can be seen from the above implementation method, after the hydraulic test is completed, the water in the pipe 3 is pumped out through the water supply pipe 22, and the remaining moisture in the pipe 3 is dried through the external air supply structure. Then, the crossbar 21 can be driven into the pipe 3 by the external component. See details. Figure 2 At this time, the image acquisition around the outer wall of the crossbar 21 can acquire and compare images of the inner wall of the pipe 3, detect whether there are defects or other hidden dangers in the inner wall of the pipe 3, facilitate subsequent repair of the inner wall of the pipe 3, and at the same time avoid the residual moisture in the pipe 3 from affecting the medium and causing pollution or other effects when transporting certain media.

[0050] When pipe 3 deforms after being clamped, the cause of the deformation can be preliminarily detected by an image acquisition device.

[0051] Furthermore, the side wall of the rotating disk 16 is provided with a through groove for the sliding of the limiting shaft 15, and the end of the limiting shaft 15 that protrudes from the rotating disk 16 is threaded, so that the limiting shaft 15 can be fixedly installed in the through groove by bolts.

[0052] As can be seen from the above implementation method, when the sliding seat 4 is slidably adjusted, the bolts on the outer wall of the limiting shaft 15 can be unscrewed to adjust the position of the limiting shaft 15 along the through groove. After the limiting shaft 15 is adjusted to a suitable position, the limiting shaft 15 is fixed by bolts, thus completing the adjustment of the position of the limiting shaft 15 on the rotating disk 16.

[0053] Furthermore, the water tank of the external water supply equipment contains a soluble fluorescent substance, and the image acquisition device contains a light source.

[0054] As can be seen from the above embodiments, by adding soluble fluorescent substances to the water tank of the external water supply equipment, fluorescent substances can remain on the inner wall of the dried pipe 3. Since the surface area of ​​the defect on the inner wall of the pipe 3 is large, a large amount of fluorescent substances accumulate inside. When the light source of the image acquisition device irradiates the fluorescent substances and reflects them, the brightness of the defect on the inner wall of the pipe 3 will be significantly greater than that of other parts, making it easier for the image acquisition device to identify.

[0055] Furthermore, a cylinder is fixedly mounted on the surface of the base 1, and the power shaft of the cylinder is fixedly connected to the mounting bracket 2.

[0056] As can be seen from the above implementation method, by adjusting the position of the fixing bracket 2 on the surface of the base 1 by the cylinder, axial pressure can be applied to both ends of the pipe 3 on the basis of radial pressure resistance test and inner wall hydraulic test, further simulating the extreme external environment and improving the stability of the fixing bracket 2 when fixing the pipe 3.

[0057] Furthermore, when the connecting rod 11 rotates, it cannot cross the horizontal line, and it always has a certain angle with the horizontal line.

[0058] As can be seen from the above embodiments, by setting the connecting rod 11 to be unable to cross the horizontal line when rotating and to have a certain angle with the horizontal line, it is possible to avoid the connecting rod 11 sharing the clamping force or spring compression force on the pipe 3 through its own material hardness when it is in a horizontal state, thereby further improving the stability of the clamping force on the pipe 3.

[0059] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure testing device for special equipment pressure pipelines, comprising a base (1), characterized in that: The base (1) has two adjustable mounting brackets (2) installed on its surface. The two mounting brackets (2) can seal and fix the pipe (3) through the slots opened on the side wall. Water pipes (22) are fixedly installed on the outer walls of the two mounting brackets (2). The two water pipes (22), the two mounting brackets (2), the pipe (3), and the external water supply equipment can form a water flow loop. Clamping blocks (10) are provided on both sides of the pipe (3). It also includes a pressurizing assembly for driving two clamping blocks (10) to apply a stable clamping force to the outer wall of the pipe (3); It also includes a detection component for detecting whether the pipe (3) deforms under the clamping action of the clamping block (10).

2. The pressure testing device for special equipment pressure pipelines according to claim 1, characterized in that: The pressurizing assembly includes two sets of sliding seats (4), and the two sliding seats (4) are respectively located on the surface of the base (1) on both sides of the pipe (3). The sliding seat (4) is L-shaped and a fixed shaft (8) is fixedly installed on the top surface of the base plate. A sliding frame (7) is fixedly installed at the top of the fixed shaft (8). A sliding block (9) that can be horizontally slidably adjusted is installed in the sliding frame (7). The clamping block (10) is slidably installed in the groove opened on the side wall of the sliding block (9), and a spring is provided between the sliding block (9) and the clamping block (10).

3. The pressure testing device for special equipment pressure pipelines according to claim 2, characterized in that: The sliding seat (4) has a sliding box (5) mounted on the side wall of the side plate, which is sleeved outside the sliding frame (7) and can slide. The fixed shaft (8) passes through the bottom of the sliding box (5). A connecting rod (11) is rotatably installed between the inner side wall of the sliding frame (7) and the side wall of the sliding block (9).

4. The pressure testing device for special equipment pressure pipelines according to claim 3, characterized in that: Two sets of mounting brackets (6) are fixedly installed on the top surface of the base (1). A motor (17) is fixedly installed on the side wall of the mounting bracket (6). A rotating disk (16) is fixedly installed at the end of the motor (17) through the mounting bracket (6). A sliding adjustable limiting shaft (15) is installed on the side wall of the rotating disk (16). A limiting block (12) is slidably installed in the groove opened on the outer side wall of the sliding box (5). A threaded rod (13) that passes through the limiting block (12) is rotatably installed in the side wall of the sliding box (5). The through hole of the limiting block (12) is set as a threaded hole that meshes with the thread on the outer wall of the threaded rod (13). A rotating rod (14) is rotatably installed between the limiting shaft (15) and the limiting block (12).

5. The pressure testing device for special equipment pressure pipelines according to claim 3, characterized in that: The detection component includes a sliding groove formed on the outer wall of the side plate of the sliding seat (4). A sliding rod (18) that can slide in the sliding groove is fixedly installed on the outer wall of the sliding box (5). A rotating handle (20) is rotatably installed on the outer wall of the side plate of the sliding seat (4). A tension spring (19) is provided between the end of the rotating handle (20) away from the sliding rod (18) and the rotating handle (20). The outer wall of the side plate of the sliding seat (4) is also provided with two fixing pins for limiting the rotation of the rotating handle (20), and a pressure alarm is provided in the fixing pin located below.

6. The pressure testing device for special equipment pressure pipelines according to claim 5, characterized in that: The detection assembly also includes a crossbar (21) installed in the fixed frame (2) and adjustable by sliding. The end of the crossbar (21) near the pipe (3) is provided with a sealing plug, and the outer wall of the crossbar (21) is provided with an image acquisition device.

7. The pressure testing device for special equipment pressure pipelines according to claim 4, characterized in that: The rotating disk (16) has a through groove on its side wall that allows the limiting shaft (15) to slide, and the end of the limiting shaft (15) that protrudes from the rotating disk (16) is threaded. The limiting shaft (15) can be fixedly installed in the through groove by bolts.

8. The pressure testing device for special equipment pressure pipelines according to claim 6, characterized in that: The water tank of the external water supply equipment contains a soluble fluorescent substance, and the image acquisition device contains a light source.

9. The pressure testing device for special equipment pressure pipelines according to claim 1, characterized in that: A cylinder is fixedly mounted on the surface of the base (1), and the power shaft of the cylinder is fixedly connected to the fixing frame (2).

10. The pressure testing device for special equipment pressure pipelines according to claim 3, characterized in that: The connecting rod (11) cannot cross the horizontal line when it rotates, and always has a certain angle with the horizontal line.

Images