Pipeline pressure detection device applied to safety evaluation

Abstract

The invention relates to the technical field of pressure detection, in particular to a pipeline pressure detection device applied to safety evaluation, which comprises a detection device body, a top plate, a support table and a protection plate, the top plate is fixedly mounted at the top of the detection device body, the lower surface of the top plate is fixedly connected with one side of the protection plate, and the other side of the protection plate is fixedly connected with the support table. The detection device body comprises a placement mechanism and a pressure mechanism, the placement mechanism comprises a fixing plate, a driving block is slidably mounted on the fixing plate, two sides of the driving block are rotatably connected with transmission blocks through first connecting rods, the transmission blocks are rotatably connected with driven blocks through second connecting rods, and buckling plates are fixedly mounted at one ends of the driving block and the driven blocks; a contact mechanism is arranged on the lower side of the pressure mechanism and comprises a side pressing plate, and a top pressing plate is slidably connected to one side of the side pressing plate; the pipeline is supported and buckled through the buckling plate, rolling of the pipeline in the detection process is avoided, an arc face is formed through the side pressing plate and the top pressing plate 18, and the overall pressure detection data of the pipeline is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure detection, and in particular to a pipeline pressure detection device used for safety evaluation. Background Art

[0002] Pipeline pressure detection device is a device used to monitor and measure the pressure of fluid (such as gas, liquid) in the pipeline. Such devices are widely used in many fields such as industrial production, building facilities, water supply systems, etc. to ensure the safe operation and stable performance of the system. In iron and steel metallurgical operations, pipelines are used to transport materials. The pressure that the pipeline can withstand is extremely important and needs to be pressure tested. However, during the pressure test of the pipeline, the existing pipeline pressure testing device presses down the upper end of the pipeline through a pressure plate, and the detection device has an arc surface structure on the pipeline surface. During the downward pressure, the pipeline is prone to rolling, resulting in errors in the pressure detection data. At the same time, the pressure plate has a flat structure, while the pipeline has an arc surface structure. The contact area between the pressure plate and the pipeline is small, resulting in a concentrated pressure detection point, making it difficult to detect the overall pressure value of the pipeline. Summary of the invention

[0001] The purpose of the present invention is to provide a pipeline pressure detection device for safety evaluation to solve the problems raised in the above background technology.

[0002] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A pipeline pressure detection device used for safety evaluation, comprising: a detection device body, a top plate, a support platform, and a protective plate. The top plate is fixedly installed on the top of the detection device body, the lower surface of the top plate is fixedly connected to one side of the protective plate, and the other side of the protective plate is fixedly connected to the support platform. The detection device body includes a placement mechanism and a pressure mechanism.

[0003] The placement mechanism includes a fixed plate, on which a driving block is slidably mounted. Both sides of the driving block are rotatably connected to the transmission block through a first connecting rod, and the transmission block is rotatably connected to the driven block through a second connecting rod. A buckling plate is fixedly mounted on one end of the driving block and the driven block.

[0004] The pressure mechanism comprises a cylinder, the bottom of the cylinder is fixedly connected to the buffer, a contact mechanism is arranged at the lower side of the buffer, the contact mechanism comprises a side pressure plate, and a top pressure plate is slidably connected to one side of the side pressure plate.

[0005] Preferably, the upper surface of the support platform is fixedly connected to the four corners of the top plate via columns, the columns are fixedly connected to the side walls of the protective plate, and the protective plate is made of a transparent material.

[0006] Preferably, both sides of the upper surface of the support platform are fixedly connected to the fixing plate, a pressure-resistant seat is provided on one side of the fixing plate, and the lower surface of the pressure-resistant seat is fixedly connected to the support platform.

[0007] Preferably, a slide groove is provided on the surface of the fixed plate, and the driving block, the transmission block and the driven block are all slidably engaged in the slide groove. The driving block and the driven block are provided with a first pin shaft in the fixed sleeve, and the transmission block is provided with a second pin shaft in the fixed sleeve.

[0008] Preferably, the driving block is rotationally connected to one end of the first connecting rod through a first pin, the other end of the first connecting rod is rotationally connected to the transmission block through a second pin, the transmission block is rotationally connected to one end of the second connecting rod through the second pin, the other end of the second connecting rod is rotationally connected to the driven block through the first pin, and the transmission block and the driven block are symmetrically arranged about the center plane of the driving block.

[0009] Preferably, one end of the driving block is fixedly connected to a limited bearing, and one end of the optical axis is fixedly sleeved in the limited bearing. The other end of the optical axis is fixedly connected to the large threaded rod, and the large threaded rod is sleeved in the threaded sleeve. One side of the threaded sleeve is fixedly connected to the fixed plate. The large threaded rod is rotatably sleeved in the fixed plate, and the snap-fit ​​plates are all arc surfaces and one side of the snap-fit ​​plates is fixedly connected to an anti-sliding block.

[0010] Preferably, an upper pressure block is provided on one side of the anti-sliding plate, the top of the upper pressure block is slidably connected to the support frame, the bottom of the upper pressure block is slidably connected to one side of the lower pressure block through a limiting groove and a limiting block, and the other side of the lower pressure block is fixedly connected to the top pressure plate.

[0011] Preferably, a group of two upper pressure blocks are provided and are arranged symmetrically about the center plane of the top pressure plate. The outer wall of the side pressure plate is fixedly connected to the upper pressure block through a connecting block. A small threaded rod is connected to the internal thread of the upper pressure block. Both ends of the small threaded rod are rotatably sleeved in the support frame and one end is fixedly connected to the output end of the small motor.

[0012] Preferably, the upper surface of the support frame is fixedly connected to the buffer member, and the buffer member is composed of a horizontal plate and a buffer spring. The upper surface of the horizontal plate is fixedly connected to the output end of the cylinder, the lower surface of the horizontal plate is fixedly connected to the buffer spring, the bottom of the buffer spring is fixedly connected to the support frame, and the top of the cylinder is fixedly connected to the top plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The entire device is fixedly supported by the fixed connection between the top plate, the support platform and the protective plate. The protective plate can be used for protection during the detection process to prevent the fragments of the pipeline from accidentally rupturing and causing harm to personnel. The entire placement mechanism is fixedly supported by the fixed plate set by the placement mechanism. The two ends of the pipeline are placed in the snap-fit ​​plate, and the middle part of the pipeline is supported by the pressure-resistant seat. Through the upward movement of the driving block, the driving block drives the transmission block to move under the transmission cooperation of the first connecting rod and the second connecting rod, and the transmission block drives the driven block to move, so that the driving block and the driven block drive the snap-fit ​​plate to fit the surface of the pipeline and support the lower end of the pipeline while snapping on the left and right sides, thereby improving the firmness of the placement of the lower end of the pipeline, and then the anti-sliding block fixedly connected to the inner wall of the snap-fit ​​plate abuts against the outer ring surface of the pipeline, thereby further preventing the pipeline from rolling during the pressure detection process.

[0015] 2. During the pressure detection process, the contact mechanism is driven by a small motor to drive the small threaded rod to rotate. Under the rotation of the small threaded rod, the two upper pressure blocks are driven to move toward each other, so that the pressure plates on both sides move toward each other. At the same time, the upper pressure block cooperates with the inclined surface between the upper pressure block and the lower pressure block, so that the lower pressure block moves downward, and the lower pressure block drives the top pressure plate to move downward until an arc surface structure is formed between the side pressure plate and the top pressure plate, thereby pressing down on the upper end of the pipeline and improving the data of the overall pressure detection of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a side view schematic diagram of the overall structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 It is a bottom view schematic diagram of the internal structure of the present invention;

[0020] Figure 5 It is a top view schematic diagram of the internal structure of the present invention;

[0021] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure in the middle.

[0022] In the figure: 1. detection device body; 2. top plate; 3. support platform; 4. protective plate; 5. fixing plate; 6. driving block; 7. first connecting rod; 8. transmission block; 9. second connecting rod; 10. driven block; 11. snap-fit ​​plate; 12. placement mechanism; 13. pressure mechanism; 14. cylinder; 15. buffer; 16. contact mechanism; 17. side pressure plate; 18. top pressure plate; 19. column; 20. pressure-resistant seat; 21. slide groove; 22. first pin shaft; 23. second pin shaft; 24. limit bearing; 25. optical axis; 26. large threaded rod; 27. threaded sleeve; 28. anti-sliding block; 29. ​​upper pressure block; 30. support frame; 31. lower pressure block; 32. connecting block; 33. small threaded rod; 34. small motor. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1-Figure 6 The present invention provides a technical solution: a pipeline pressure detection device used for safety evaluation, comprising: a detection device body 1, a top plate 2, a support platform 3, and a protective plate 4. The top plate 2 is fixedly installed on the top of the detection device body 1, the lower surface of the top plate 2 is fixedly connected to one side of the protective plate 4, and the other side of the protective plate 4 is fixedly connected to the support platform 3. The detection device body 1 comprises a placement mechanism 12 and a pressure mechanism 13. The placement mechanism 12 comprises a fixed plate 5, on which a driving block 6 is slidably installed, and both sides of the driving block 6 are rotatably connected to a transmission block 8 through a first connecting rod 7, and the transmission block 8 is rotatably connected to a driven block 10 through a second connecting rod 9. A buckling plate 11 is fixedly installed at one end of the driving block 6 and the driven block 10. The pressure mechanism 13 comprises a cylinder 14, the bottom of the cylinder 14 is fixedly connected to a buffer 15, and a contact mechanism 16 is arranged on the lower side of the buffer 15. The contact mechanism 16 comprises a side pressure plate 17, and a top pressure plate 18 is slidably connected to one side of the side pressure plate 17.

[0025] The entire device is fixedly supported by the fixed connection among the top plate 2, the support platform 3, and the protective plate 4. The protective plate 4 can be used for protection during the detection process to prevent the fragments of the pipeline from accidentally rupturing and causing harm to personnel. The entire placement mechanism 12 is fixedly supported by the fixed plate 5 set by the placement mechanism 12. The two ends of the pipeline are placed in the buckle plate 11, and the middle part of the pipeline is supported by the pressure-resistant seat 20. Through the upward movement of the driving block 6, the driving block 6 drives the transmission block 8 to move under the transmission cooperation of the first connecting rod 7 and the second connecting rod 9, and the transmission block 8 drives the driven block 10 to move, so that the driving block 6 and the driven block 10 drive the buckle plate 11 When the pipeline surface is placed in contact with the pipe surface, the lower end of the pipe is supported and buckled at the left and right sides at the same time, so as to improve the firmness of the lower end of the pipe. Then, the anti-sliding block 28 fixedly connected to the inner wall of the buckling plate 11 abuts against the outer ring surface of the pipe, so as to further prevent the pipeline from rolling during the pressure detection process. The cylinder 14 in the pressure mechanism 13 is pressed down to drive the buffer 15 to move, and the buffer 15 performs buffering, and then the pressure plates 17 on both sides move toward each other, so as to squeeze the top pressure plate 18 to move downward, so that the pressure plates 17 on both sides and the top pressure plate 18 form an arc surface structure, fit the upper end of the pipe, and improve the data of the overall pressure detection of the pipe.

[0026] Embodiment 2: On the basis of embodiment 1, the upper surface of the support platform 3 is fixedly connected to the four corners of the top plate 2 by means of columns 19, the columns 19 are fixedly connected to the side walls of the protective plate 4, the protective plate 4 is made of transparent material, the columns 19 are fixedly connected between the corresponding four corners of the support platform 3 and the top plate 2, thereby reinforcing the stability of the entire device, the protective plate 4 is made of transparent material, thereby facilitating the observation and operation of the operator, the upper surface of the support platform 3 is fixedly connected to the fixed plate 5 on both sides, a pressure-resistant seat 20 is provided on one side of the fixed plate 5, the lower surface of the pressure-resistant seat 20 is fixedly connected to the support platform 3, the fixed plate 5 is welded and fixed to the upper surface of the support platform 3, the pressure-resistant seat 20 stably supports the middle part of the pipeline, and the pressure-resistant seat 20 can withstand greater pressure.

[0027] By means of the column 19 fixedly connected between the support platform 3 and the top plate 2, the stability of the entire pressurization device is increased. The side wall of the column 19 is fixedly connected to the protective plate 4. The protective plate 4 is made of a transparent material to facilitate observation during the detection process. The fixed plate 5 and the pressure-resistant seat 20 are fixedly installed on the support platform 3 to facilitate stable support of the pipeline.

[0028] Embodiment 3: On the basis of embodiment 2, a slide groove 21 is provided on the surface of the fixed plate 5, and the driving block 6, the transmission block 8, and the driven block 10 are all slidably engaged in the slide groove 21. The driving block 6 and the driven block 10 are fixedly sleeved with a first pin 22, and the transmission block 8 is fixedly sleeved with a second pin 23. A slide groove 21 is provided on the surface of the fixed plate 5, and the size of the slide groove 21 is adapted to the driving block 6, the transmission block 8, and the driven block 10. The driving block 6 and the driven block 10 are fixedly sleeved with a first pin 22 of the same size. 2. A second pin shaft 23 is fixedly sleeved in the transmission block 8. The driving block 6 is rotatably connected to one end of the first connecting rod 7 through the first pin shaft 22. The other end of the first connecting rod 7 is rotatably connected to the transmission block 8 through the second pin shaft 23. The transmission block 8 is rotatably connected to one end of the second connecting rod 9 through the second pin shaft 23. The other end of the second connecting rod 9 is rotatably connected to the driven block 10 through the first pin shaft 22. The transmission block 8 and the driven block 10 are symmetrically arranged about the central plane of the driving block 6. The transmission block 8 and the driven block 10 are in a fixed A total of two sets of symmetrical arrangements are provided on the fixed plate 5. The driving block 6, the transmission block 8, and the driven block 10 are cooperated and transmitted through the rotation connection of the first connecting rod 7, the second connecting rod 9, the first pin shaft 22, and the second pin shaft 23. One end of the driving block 6 is fixedly connected to the limited bearing 24, and one end of the optical axis 25 is fixedly sleeved in the limited bearing 24. The other end of the optical axis 25 is fixedly connected to the large threaded rod 26. The large threaded rod 26 is sleeved in the threaded sleeve 27. One side of the threaded sleeve 27 is fixedly connected to the fixed plate 5. The threaded rod 26 is rotatably sleeved in the fixed plate 5, the snap-fit ​​plates 11 are all arc surfaces and one side of the snap-fit ​​plates 11 is fixedly connected to an anti-sliding block 28, the bottom of the driving block 6 is fixedly installed with a limit bearing 24, and the limit bearing 24 adopts an installation method in which the outer ring is fixed and the inner ring is rotated. One end of the optical axis 25 is fixedly sleeved on the inner ring of the limit bearing 24, and the other end of the optical axis 25 is fixedly connected to the large threaded rod 26. The large threaded rod 26 is limited by a threaded sleeve 27, and the bottom of the large threaded rod 26 is rotatably sleeved on the support platform 3.

[0029] The pipe is pushed in from the side of the protective plate 4 so that the two ends of the pipe are located on the upper side of the buckling plate 11, and the outer ring surface of the middle part of the pipe abuts against the upper surface of the pressure-resistant seat 20. After the abutment is completed, the hand wheel fixed on the bottom of the large threaded rod 26 is rotated, thereby driving the large threaded rod 26 to rotate, and the large threaded rod 26 moves upward under the limit of the threaded sleeve 27, thereby driving the optical axis 25 to move synchronously, and the optical axis 25 pushes the driving block 6 to move upward under the limit of the limit bearing 24, and the driving block 6 slides under the limit of the slide groove 21, and the driving block 6 drives the transmission block 8 to move obliquely upward along the slide groove 21 through the rotation connection of the first pin shaft 22, the second pin shaft 23 and the first connecting rod 7, and then drives the transmission block 8 to move obliquely upward along the slide groove 21 through the second pin shaft 23, the first pin shaft 22 and the second connecting rod 9 is connected by rotation, so that the transmission block 8 drives the driven block 10 to move obliquely upward along the slide groove 21, thereby realizing the synchronous movement of the driving block 6, the transmission block 8, and the driven block 10, so that the driving block 6 and the driven block 10 drive the snap-fit ​​plate 11 to move toward the outer ring surface of the pipe, so that the snap-fit ​​plate 11 fixedly connected at one end of the driving block 6 supports the bottom side of the lower end of the pipe, and the snap-fit ​​plate 11 fixedly connected at one end of the driven block 10 fits the surface of the pipe and snaps the left and right sides of the lower end of the pipe at the same time, thereby improving the firmness of the placement of the lower end of the pipe, and then the anti-sliding block 28 fixedly connected on one side of the snap-fit ​​plate 11 fits the pipe wall, thereby increasing the friction between the pipe wall, thereby avoiding the problem of pipe rolling during pressure detection.

[0030] Embodiment 4: On the basis of embodiment 3, an upper pressing block 29 is provided on one side of the anti-sliding block 28, the top of the upper pressing block 29 is slidably connected to the support frame 30, the bottom of the upper pressing block 29 is slidably connected to one side of the lower pressing block 31 through the cooperation of the limit groove and the limit block, the other side of the lower pressing block 31 is fixedly connected to the top pressing plate 18, an inclined surface is provided on one side of the upper pressing block 29, and the inclined surface is cooperated with the inclined surface provided on one side of the lower pressing block 31 for sliding connection, and the top of the upper pressing block 29 is slidably connected to the support frame 30 through the T-slot A limiting groove is provided on the inclined surface of the upper pressing block 29, and a limiting block is fixedly connected to the inclined surface of the lower pressing block 31. The limiting block and the limiting groove are slidably matched to limit the upper pressing block 29 and the lower pressing block 31. The upper pressing block 29 is provided with a group of two and is symmetrically arranged about the central plane of the top pressing plate 18. The outer wall of the side pressing plate 17 is fixedly connected to the upper pressing block 29 through a connecting block 32. The upper pressing block 29 is internally threaded with a small threaded rod 33. The two ends of the small threaded rod 33 are rotatably sleeved in the support frame 30 and one end is connected to the small motor 3 4, one side of the lower pressing block 31 is fixedly connected to the top pressing plate 18, the upper pressing block 29 is fixedly connected to the side pressing plate 17 under the connection of the connecting block 32, the upper pressing block 29 is arranged on both sides of the bottom of the support frame 30, the upper pressing block 29 is internally threaded with a small threaded rod 33, the small threaded rod 33 is provided with two sections of threads and the rotation direction is opposite, the outer wall of the support frame 30 is fixedly connected to the small motor 34, the output end of the small motor 34 is fixedly connected to one end of the small threaded rod 33, and the upper surface of the support frame 30 is fixedly connected to the buffer The buffer component 15 is fixedly connected, and the buffer component 15 is composed of a horizontal plate and a buffer spring. The upper surface of the horizontal plate is fixedly connected to the output end of the cylinder 14, the lower surface of the horizontal plate is fixedly connected to the buffer spring, the bottom of the buffer spring is fixedly connected to the support frame 30, the top of the cylinder 14 is fixedly connected to the top plate 2, the upper surface of the support frame 30 is fixedly connected to one end of the buffer spring in the buffer component 15, and the other end of the buffer spring is fixedly connected to the horizontal plate, the upper surface of the horizontal plate is fixedly connected to the output end of the cylinder 14, and the cylinder 14 is fixedly installed on the top plate 2.

[0031] There are two cylinders 14, so that pressure can be applied to both sides of the pipeline at the same time, thereby ensuring the balance of pressure application, thereby preventing the end of the pipeline from tilting, and extending through the output end of the cylinder 14, thereby driving the cross plate and the buffer spring to move downward, and then indirectly driving the side pressure plate 17 and the top pressure plate 18 to abut against the inner wall of the pipeline. The buffer spring is provided to provide buffering during the process of pressurizing the pipeline, thereby preventing the pressure of the cylinder 14 from being too high, thereby causing the side pressure plate 17 and the top pressure plate 18 to be damaged, and the contact mechanism 16 is in the process of pressure detection. During the process, the small motor 34 drives the small threaded rod 33 to rotate. Under the rotation of the small threaded rod 33, the two upper pressure blocks 29 are driven to move toward each other, so that the pressure plates 17 on both sides move toward each other. At the same time, the upper pressure block 29 cooperates with the inclined surface between the lower pressure block 31, so that the lower pressure block 31 moves downward, and the lower pressure block 31 drives the top pressure plate 18 to move downward until an arc surface structure is formed between the side pressure plate 17 and the top pressure plate 18, so as to fit and press down the upper end of the pipeline, thereby improving the data of the overall pressure detection of the pipeline.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline pressure detection device for safety evaluation, comprising a detection device body (1), a top plate (2), a support platform (3), and a protective plate (4), characterized in that: A top plate (2) is fixedly mounted on the top of the detection device body (1); the lower surface of the top plate (2) is fixedly connected to one side of the protection plate (4); the other side of the protection plate (4) is fixedly connected to the support platform (3); the detection device body (1) comprises a placement mechanism (12) and a pressure mechanism (13); The placement mechanism (12) comprises a fixed plate (5), a driving block (6) is slidably mounted on the fixed plate (5), both sides of the driving block (6) are rotatably connected to the transmission block (8) via a first connecting rod (7), the transmission block (8) is rotatably connected to the driven block (10) via a second connecting rod (9), and a buckling plate (11) is fixedly mounted on one end of the driving block (6) and the driven block (10); The pressure mechanism (13) comprises a cylinder (14), the bottom of the cylinder (14) is fixedly connected to a buffer (15), a contact mechanism (16) is arranged on the lower side of the buffer (15), the contact mechanism (16) comprises a side pressure plate (17), and a top pressure plate (18) is slidably connected to one side of the side pressure plate (17).

2. A pipeline pressure detection device for safety evaluation according to claim 1, characterized in that: The upper surface of the support platform (3) is fixedly connected to the four corners of the top plate (2) via upright posts (19), and the upright posts (19) are fixedly connected to the side walls of the protective plate (4), and the protective plate (4) is made of a transparent material.

3. A pipeline pressure detection device for safety evaluation according to claim 2, characterized in that: Both sides of the upper surface of the support platform (3) are fixedly connected to the fixed plate (5); a pressure-resistant seat (20) is provided on one side of the fixed plate (5); and the lower surface of the pressure-resistant seat (20) is fixedly connected to the support platform (3).

4. A pipeline pressure detection device for safety evaluation according to claim 3, characterized in that: The surface of the fixed plate (5) is provided with a slide groove (21), the driving block (6), the transmission block (8) and the driven block (10) are all slidably engaged in the slide groove (21), the driving block (6) and the driven block (10) are provided with a first pin shaft (22) in the fixed sleeve, and the transmission block (8) is provided with a second pin shaft (23) in the fixed sleeve.

5. A pipeline pressure detection device for safety evaluation according to claim 4, characterized in that: The driving block (6) is rotationally connected to one end of the first connecting rod (7) via a first pin shaft (22), the other end of the first connecting rod (7) is rotationally connected to the transmission block (8) via a second pin shaft (23), the transmission block (8) is rotationally connected to one end of the second connecting rod (9) via the second pin shaft (23), the other end of the second connecting rod (9) is rotationally connected to the driven block (10) via the first pin shaft (22), and the transmission block (8) and the driven block (10) are both symmetrically arranged with respect to the central plane of the driving block (6).

6. A pipeline pressure detection device for safety evaluation according to claim 5, characterized in that: One end of the driving block (6) is fixedly connected to a limit bearing (24), one end of an optical axis (25) is fixedly sleeved in the limit bearing (24), the other end of the optical axis (25) is fixedly connected to a large threaded rod (26), the large threaded rod (26) is sleeved in a threaded sleeve (27), one side of the threaded sleeve (27) is fixedly connected to a fixed plate (5), the large threaded rod (26) is rotatably sleeved in the fixed plate (5), the buckling plates (11) are all arc surfaces, and one side of the buckling plates (11) is fixedly connected to an anti-sliding block (28).

7. A pipeline pressure detection device for safety evaluation according to claim 6, characterized in that: An upper pressing block (29) is provided on one side of the anti-sliding block (28); the top of the upper pressing block (29) is slidably connected to the support frame (30); the bottom of the upper pressing block (29) is slidably connected to one side of the lower pressing block (31) through a limiting groove and the matching limiting block; the other side of the lower pressing block (31) is fixedly connected to the top pressing plate (18).

8. A pipeline pressure detection device for safety evaluation according to claim 7, characterized in that: The upper pressure blocks (29) are provided in a group of two and are symmetrically arranged about the center plane of the top pressure plate (18); the outer wall of the side pressure plate (17) is fixedly connected to the upper pressure block (29) through a connecting block (32); the upper pressure block (29) is internally threadedly connected to a small threaded rod (33); both ends of the small threaded rod (33) are rotatably sleeved in the support frame (30) and one end is fixedly connected to the output end of the small motor (34).

9. A pipeline pressure detection device for safety evaluation according to claim 8, characterized in that: The upper surface of the support frame (30) is fixedly connected to the buffer member (15), and the buffer member (15) is composed of a horizontal plate and a buffer spring. The upper surface of the horizontal plate is fixedly connected to the output end of the cylinder (14), the lower surface of the horizontal plate is fixedly connected to the buffer spring, the bottom of the buffer spring is fixedly connected to the support frame (30), and the top of the cylinder (14) is fixedly connected to the top plate (2).

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