A kind of oil pipeline pressure resistance detection device

Abstract

The invention relates to the technical field of pressure resistance detection, and discloses a pressure resistance detection device for a petroleum pipeline, comprising a base and an auxiliary feeding mechanism arranged inside the base, wherein the auxiliary feeding mechanism comprises a toothed plate, a first toothed rod, a second threaded rod and a second toothed rod, wherein the toothed plate is slidably connected to the inside of the base; when a clamping plate moves, the toothed plate drives the first toothed rod to rotate, and the second threaded rod rotates together with the first toothed rod through the transmission of a transmission belt, and the threaded shape on the surface of the second threaded rod meshes with the second toothed rod and drives the second toothed rod to rotate, so that the support legs at both ends of the second toothed rod can adjust their rotation angles automatically as the moving direction of the clamping plate changes, so that when the support legs are laid flat, it is convenient for staff to put the petroleum pipe onto the top of the base, and when they are erected, the support legs can support and limit the petroleum pipe, and through the cooperation of the second threaded rod and the second toothed rod one-way transmission structure, it can be avoided that the support legs at both ends of the second toothed rod are subjected to excessive force.

Description

Technical Field

[0001] The invention relates to the technical field of pressure resistance detection, in particular to a pressure resistance detection device for a petroleum pipeline. Background Art

[0002] The oil pipeline compression test device is a compressive strength tester used to evaluate the compression performance of oil pipelines. Combined with modern measurement and control technology, this device can quickly and accurately detect the deformation and damage of pipelines under different pressures, providing important guarantees for the safe operation of oil pipelines.

[0003] During the compression test of existing oil pipelines, the oil pipelines are large in size and the test platform is equipped with legs to support and limit the pipelines. Therefore, the pipelines can only be placed on the test platform by hoisting. The hoisting and placement has high requirements for the floor height of the plant, which makes the test device unusable in the plant with low floor height.

[0004] Before the compression test, the oil pipeline will be deformed due to collision and extrusion during transportation, resulting in errors in the test data due to its deformation. At the same time, during the test, the two ends of the pipeline will become loose from the splint due to shrinkage, resulting in a loose seal inside the pipeline.

[0005] Therefore, a petroleum pipeline compression detection device is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a petroleum pipeline pressure resistance detection device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a petroleum pipeline pressure resistance detection device, comprising a base and an auxiliary feeding mechanism arranged inside the base, the auxiliary feeding mechanism comprising a toothed plate, a first toothed rod, a second threaded rod and a second toothed rod, the toothed plate is slidably connected to the inside of the base, a slide plate is fixedly connected to the outer wall of the toothed plate, a first spring is fixedly connected to the outer wall of the slide plate, the first toothed rod is rotatably connected to the inside of the base, the second threaded rod is rotatably connected to the inside of the base, a transmission belt is transmission-connected between the first toothed rod and the second threaded rod, a second toothed rod is rotatably connected to the inside of the base, the second toothed rod is meshed with the second threaded rod, both ends of the second toothed rod are fixedly connected to support feet, a second spring is fixedly connected between the bottom of the support foot and the base, and a pressure sensor is fixedly connected to the inside of the second spring and between the support foot and the base.

[0008] Preferably, a clamping plate is symmetrically slidably connected to the top of the base, and the interior of the clamping plate includes a pumping and pressing mechanism, and the pumping and pressing mechanism includes a first hollow tube, a special-shaped sliding rod, a second annular plate and a first support rod, the first hollow tube is fixedly connected to a side close to the clamping plate, and a side wall of the first hollow tube away from the clamping plate is fixedly connected to the first annular plate, the special-shaped sliding rod is slidably connected to the inside of the first hollow tube, the special-shaped sliding rod is rotatably connected to the first support rod in an annular array on a side away from the first hollow tube, and the first support rod is rotatably connected to a roller at one end of the side wall of the special-shaped sliding rod close to the first support rod. An annular hole is provided on the side wall of the special-shaped sliding rod close to the first support rod, and an annular baffle is slidably connected to the outer wall of the special-shaped sliding rod, the second annular plate is fixedly connected to the outer wall of the annular baffle, and a third spring is fixedly connected to the second annular plate and the special-shaped sliding rod in an annular array, and the second annular plate is fixedly connected to the second support rod in an annular array on a side close to the first support rod, and one end of the second support rod close to the first support rod is slidably connected to the inside of the first support rod.

[0009] Preferably, the interior of the splint also includes an external support mechanism, which includes a block, a push rod, a fourth spring and a slot, the outer wall of the splint is fixedly connected to the second motor, the output shaft of the second motor is fixedly connected to the screw rod, the first annular plate is fixedly connected to the side of the splint distributed in an annular array with convex rods, the outer wall of the screw rod is slidably connected to a special-shaped rod, the block is symmetrically rotationally connected to the interior of the special-shaped sliding rod, the interior of the special-shaped sliding rod is symmetrically slidably connected to a push rod, the fourth spring is fixedly connected between one end of the push rod away from the block and the special-shaped sliding rod, the inner wall of the first hollow tube is symmetrically provided with slots, and the end of the block close to the first hollow tube is clamped in the inside of the slot.

[0010] Preferably, a transmission mechanism is provided inside the base, and the transmission mechanism includes a first motor and a first threaded rod, the first motor is fixedly connected to the side wall of the base, the first threaded rod is fixedly connected to the output end of the first motor, and the bottom of the clamp is slidably connected to the outer wall of the first threaded rod.

[0011] Preferably, a lifting plate is slidably connected above the base, a detection pipe is provided between the base and the lifting plate, the detection pipe is provided above the supporting legs, and the roller is attached to the inner wall of the detection pipe.

[0012] Preferably, the annular baffle covers the annular hole, and the inner cavity of the special-shaped sliding rod is in a closed state when the annular baffle covers the annular hole.

[0013] Preferably, a side of the clamping plate close to the detection pipe is provided with an annular groove having a diameter equal to that of the detection pipe.

[0014] Preferably, an alarm is provided inside the base, and the pressure sensor is electrically connected to the alarm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the splint moves, the toothed plate drives the first toothed rod to rotate, and the second threaded rod rotates together with the first toothed rod through the transmission of the transmission belt. The threaded shape on the surface of the second threaded rod will mesh with the second toothed rod and drive the second toothed rod to rotate, so that the support legs at both ends of the second toothed rod can adjust their rotation angles automatically as the moving direction of the splint changes, so that when the support legs are laid flat, it is convenient for the staff to put the oil pipe on top of the base, and when the support legs are erected, they can support and limit the oil pipe. Through the cooperation of the second threaded rod and the one-way transmission structure of the second toothed rod, it can avoid the problem that the support legs at both ends of the second toothed rod drive the second threaded rod to rotate due to excessive force, thereby ensuring the stability of the support legs supporting the oil pipe.

[0017] 2. After the special-shaped slide bar moves toward the inner wall of the oil pipe, the rollers roll and support the inner wall of the oil pipe, so that after the single first support bar rotates on the surface of the special-shaped slide bar, all the first support bars can rotate together through the second support bar and the second annular plate, thereby ensuring that the rotation angles of the first support bars are the same. Multiple rollers roll and support the inner wall of the oil pipe in a circular shape inside the oil pipe, so that the oil pipe remains flat and smooth before inspection, avoiding deformation of the oil pipe due to squeezing and collision during transportation, reducing errors in oil pipe inspection, and supporting both ends of the oil pipe with rollers, while enabling the oil pipe to be more tightly clamped with the annular groove of the splint, avoiding the problem of loose sealing between the two ends of the oil pipe and the splint due to shrinkage during inspection.

[0018] 3. When the screw rotates, the special-shaped rod slides toward the direction of the clamping plate, so that negative pressure is generated in the inner cavity of the special-shaped slide rod. When the special-shaped rod slides inside the special-shaped slide rod, the block rotates, so that the special-shaped slide rod is released from the limit. When the special-shaped slide rod slides into the first hollow tube, the convex rod blocks the second annular plate, so that the annular baffle no longer blocks the annular hole. The negative pressure inside the special-shaped slide rod will act outward on the inner cavity of the oil pipe. At the same time, the second support rod fixed on the second annular plate will slide on the surface of the first support rod, so that the roller and the inner cavity of the oil pipe will fit more closely. When the screw rotates, the special-shaped rod and the special-shaped slide rod are driven to move respectively to realize the functions of pumping and supporting, so that the internal structure of the equipment is integrated and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a front view schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the structure of the pumping and pressing mechanism of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 6 It is a partial schematic diagram of the special-shaped sliding rod structure of the present invention;

[0025] Figure 7 It is a partial exploded schematic diagram of the external support mechanism structure of the present invention;

[0026] Figure 8 It is a schematic cross-sectional view of the transmission mechanism structure of the present invention;

[0027] Fig. 9 It is a schematic cross-sectional view of the auxiliary feeding mechanism structure of the present invention;

[0028] Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the structure at B in the middle;

[0029] Fig.11 It is a schematic cross-sectional view of the base structure of the present invention.

[0030] In the figure:

[0031] 1. Base; 2. Detection pipe; 3. Lifting plate; 4. Clamp;

[0032] 11. Transmission mechanism; 111. First motor; 112. First threaded rod;

[0033] 12. Auxiliary feeding mechanism; 121. First spring; 122. Slide plate; 123. Tooth plate; 124. First tooth rod; 125. Second threaded rod; 126. Transmission belt; 127. Second tooth rod; 128. Support foot; 129. Second spring; 1210. Pressure sensor;

[0034] 41, pumping and pressing mechanism; 411, first hollow tube; 412, first annular plate; 413, special-shaped sliding rod; 414, first support rod; 415, roller; 416, annular hole; 417, annular baffle; 418, second annular plate; 419, second support rod; 4110, third spring;

[0035] 42. External support mechanism; 421. Second motor; 422. Screw rod; 423. Protruding rod; 424. Special-shaped rod; 425. Block; 426. Push rod; 427. Fourth spring; 428. Slot. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0037] Embodiments of the present invention

[0038] See also Figures 9 to 11 A petroleum pipeline pressure resistance detection device comprises a base 1 and an auxiliary feeding mechanism 12 arranged inside the base 1, the auxiliary feeding mechanism 12 comprises a tooth plate 123, a first tooth rod 124, a second threaded rod 125 and a second tooth rod 127, the tooth plate 123 is slidably connected to the inside of the base 1, a slide plate 122 is fixedly connected to the outer wall of the tooth plate 123, a first spring 121 is fixedly connected to the outer wall of the slide plate 122, the first tooth rod 124 is rotatably connected to the inside of the base 1, the second threaded rod 125 is rotatably connected to the inside of the base 1, a transmission belt 126 is transmission-connected between the first tooth rod 124 and the second threaded rod 125, a second tooth rod 127 is rotatably connected inside the base 1, the second tooth rod 127 is meshed with the second threaded rod 125, two ends of the second tooth rod 127 are fixedly connected to a support foot 128, a second spring 129 is fixedly connected between the bottom of the support foot 128 and the base 1, and a pressure sensor 1210 is fixedly connected inside the second spring 129 and between the support foot 128 and the base 1.

[0039] In practical application, the embodiments of the present invention:

[0040] The inspector starts the first motor 111, and after the first motor 111 is started, the first threaded rod 112 is driven to start rotating. The rotation of the first threaded rod 112 causes the symmetrical clamping plates 4 to move in opposite directions on the base 1. The clamping plates 4 move to increase their spacing. During the movement of the clamping plates 4, the first spring 121 is no longer squeezed and elastically recovers. After the first spring 121 elastically recovers, the clamping plates 4 continue to move and drive the slide plate 122 to move together through the first spring 121. The movement of the slide plate 122 causes the tooth plate 123 to move together. The movement of the tooth plate 123 drives the first toothed rod 124 meshing therewith. When the first toothed rod 124 rotates, the second threaded rod 125 is driven to rotate together through the transmission belt 126. When the second threaded rod 125 rotates, the second toothed rod 127 is driven to rotate together, so that the legs 128 at both ends of the second toothed rod 127 rotate to be flush with the upper surface of the base 1. Then the inspection personnel push the inspection pipe 2 to the top of the base 1. When the inspection pipe 2 rolls on the base 1 until it conflicts with the legs 128, the staff starts the first motor 111 to make the first threaded rod 112 rotate in the opposite direction. The first threaded rod 112 rotates in the opposite direction to make the symmetrical clamping plates 4 relatively The first tooth bar 124 rotates and drives the second tooth bar 127 to rotate in the opposite direction through the transmission belt 126 and the second threaded rod 125, so that the legs 128 at both ends of the second tooth bar 127 rotate and lift the detection pipe 2 upward, so that the detection pipe 2 is lifted and fixed by the four legs 128 at the same time. When the first tooth bar 124 rotates to no longer mesh with the tooth plate 123, the second tooth bar 127 stops rotating at the same time, and the detection pipe 2 presses down on the legs 128. The pressure generated during the test acts on the second threaded rod 125 through the second gear rod 127. The second threaded rod 125 is meshed with the second gear rod 127 due to its threaded outer wall. The second threaded rod 125 can only drive the second gear rod 127 to rotate in one direction, so that the support legs 128 at both ends of the second gear rod 127 cannot drive the second threaded rod 125 to rotate through the second gear rod 127 when the detection pipe 2 is deformed during the pressure resistance test. The pressure sensor 1210 at the bottom of the support leg 128 will extend due to the upward sliding of the support leg 128, thereby testing the pressure resistance of the detection pipe 2.

[0041] In practical application, the embodiments of the present invention:

[0042] When the clamping plate 4 moves, the toothed plate 123 drives the first toothed rod 124 to rotate, and the second threaded rod 125 rotates together with the first toothed rod 124 through the transmission of the transmission belt 126. The threaded shape on the surface of the second threaded rod 125 will mesh with the second toothed rod 127 and drive the second toothed rod 127 to rotate, so that the support feet 128 at both ends of the second toothed rod 127 can adjust their rotation angles by themselves as the moving direction of the clamping plate 4 changes, so that the support feet 128 are convenient for the staff to place the detection pipe 2 above the base 1 when they are laid flat, and the support feet 128 can support and limit the detection pipe 2 when they are erected. Through the cooperation of the second threaded rod 125 and the one-way transmission structure of the second toothed rod 127, the problem of the support feet 128 at both ends of the second toothed rod 127 being subjected to excessive force, causing the second toothed rod 127 to drive the second threaded rod 125 to rotate, thereby ensuring the stability of the support feet 128 in supporting the detection pipe 2.

[0043] like Figures 1 to 7 As shown, a clamping plate 4 is symmetrically slidably connected to the top of the base 1, and the interior of the clamping plate 4 includes a pumping and pressing mechanism 41, which includes a first hollow tube 411, a special-shaped sliding rod 413, a second annular plate 418 and a first support rod 414. The first hollow tube 411 is fixedly connected to the side close to the clamping plate 4, and the side wall of the first hollow tube 411 away from the clamping plate 4 is fixedly connected to the first annular plate 412, and the special-shaped sliding rod 413 is slidably connected to the inside of the first hollow tube 411. The side of the special-shaped sliding rod 413 away from the first hollow tube 411 is rotatably connected to the first support rod 414 in an annular array. The first support rod 414 is away from the special-shaped sliding rod One end of 413 is rotatably connected to a roller 415, a side wall of the special-shaped slide rod 413 close to the first support rod 414 is provided with an annular hole 416, the outer wall of the special-shaped slide rod 413 is slidably connected to an annular baffle plate 417, a second annular plate 418 is fixedly connected to the outer wall of the annular baffle plate 417, a third spring 4110 is fixedly connected in an annular array between the second annular plate 418 and the special-shaped slide rod 413, a side of the second annular plate 418 close to the first support rod 414 is fixedly connected to a second support rod 419 in an annular array, and one end of the second support rod 419 close to the first support rod 414 is slidably connected to the inside of the first support rod 414.

[0044] In practical application, the embodiments of the present invention:

[0045] When the symmetrical clamping plates 4 are relatively close to each other, the movement of the clamping plates 4 will drive the first hollow tube 411 and the first annular plate 412 to move together. The movement of the first annular plate 412 will push the special-shaped sliding rod 413 to move together in the direction close to the detection pipe 2. When the special-shaped sliding rod 413 is relatively close to each other, the roller 415 will be squeezed by the inner wall of the detection pipe 2, and the first support rod 414 will rotate around the rotation connection with the special-shaped sliding rod 413, so that the roller 415 will roll on the inner wall of the detection pipe 2. When the first support rod 414 rotates, it will pass through the second support rod 414. The support rod 419 and the second annular plate 418 push the annular baffle 417. After being pushed, the annular baffle 417 will slide on the outer wall of the special-shaped slide rod 413 in the direction away from the first support rod 414. The second annular plate 418 will stretch the third spring 4110 between the second annular plate 418 and the special-shaped slide rod 413 during the movement. As the roller 415 supports the detection pipe 2 outward when rolling on the inner wall, the detection pipe 2 is prevented from being deformed due to squeezing during the transportation process, so that the detection pipe 2 can remain full before detection.

[0046] In practical application, the embodiments of the present invention:

[0047] After the special-shaped slide bar 413 moves toward the inner wall of the detection pipe 2, the rolling and support of the roller 415 on the inner wall of the detection pipe 2 can make the single first support rod 414 rotate on the surface of the special-shaped slide bar 413, and then all the first support rods 414 can rotate together through the second support rod 419 and the second annular plate 418, so as to ensure that the rotation angle of the first support rods 414 is the same, and multiple rollers 415 are circular in shape to roll and support the inner wall of the detection pipe 2 inside the detection pipe 2, so that the detection pipe 2 remains flat and smooth before detection, and deformation of the detection pipe 2 due to squeezing and collision during transportation is avoided, and the error of the detection pipe 2 during detection is reduced. The support of the two ends of the detection pipe 2 by the roller 415 can make the detection pipe 2 more tightly connected with the annular groove of the clamp plate 4, and the problem of loose sealing between the two ends of the detection pipe 2 and the clamp plate 4 is avoided due to contraction of the detection pipe 2 during detection.

[0048] like Figure 7 and Figure 8As shown, the interior of the splint 4 also includes an external support mechanism 42, which includes a block 425, a push rod 426, a fourth spring 427 and a slot 428. The outer wall of the splint 4 is fixedly connected to the second motor 421, and the output shaft of the second motor 421 is fixedly connected to the screw rod 422. The first annular plate 412 is fixedly connected to the side of the splint 4 in an annular array with a protruding rod 423, and the outer wall of the screw rod 422 is slidably connected to a special-shaped rod 424. The block 425 is symmetrically rotationally connected to the inside of the special-shaped slide rod 413, and the inside of the special-shaped slide rod 413 is symmetrically slidably connected to the push rod 426. The fourth spring 427 is fixedly connected between the end of the push rod 426 away from the block 425 and the special-shaped slide rod 413. The inner wall of the first hollow tube 411 is symmetrically provided with slots 428, and the end of the block 425 close to the first hollow tube 411 is clamped in the inside of the slot 428.

[0049] In practical application, the embodiments of the present invention:

[0050] When the two ends of the clamping plate 4 slide to the detection pipe 2 and are inserted into the annular groove of the clamping plate 4, the symmetrical clamping plate 4 forms a closed space inside the detection pipe 2 by closing the two ends of the detection pipe 2. At this time, the second motor 421 starts and drives the screw rod 422 to start rotating. During the rotation, the screw rod 422 will cause the special-shaped rod 424 to slide inside the special-shaped sliding rod 413 toward the clamping plate 4. When the special-shaped rod 424 slides inside the special-shaped sliding rod 413 to squeeze and push the push rod 426, the fourth spring 427 is squeezed and elastically contracts, and the push rod 426 pushes the block 425 to rotate inside the special-shaped sliding rod 413. After the block 425 rotates, it is no longer engaged with the slot 428 opened on the first hollow tube 411, so that the first hollow tube 411 no longer forms a special-shaped sliding rod 413 through the block 425 The movement of the special-shaped rod 424 drives the special-shaped sliding rod 413 to move in the direction close to the clamping plate 4. When the special-shaped sliding rod 413 slides to the point where the convex rod 423 squeezes the second annular plate 418, the second annular plate 418 drives the annular baffle plate 417 and the second support rod 419 to move together, so that the annular baffle plate 417 no longer blocks the annular hole 416, so that the negative pressure inside the special-shaped sliding rod 413 can act on the inside of the detection pipe 2, thereby testing the pressure resistance of the detection pipe 2. At the same time, during the movement of the special-shaped sliding rod 413, the second support rod 419 slides on the surface of the first support rod 414, causing the first support rod 414 to be stretched outward, so that the roller 415 on the end side of the first support rod 414 can fit closely to the inner wall of the detection pipe 2, thereby supporting the inside of the detection pipe 2.

[0051] In practical application, the embodiments of the present invention:

[0052] When the screw rod 422 rotates, the special-shaped rod 424 slides toward the direction close to the clamping plate 4, so that the inner cavity of the special-shaped sliding rod 413 generates negative pressure, and then the special-shaped sliding rod 413 is released from the limit by the rotation of the block 425 when the special-shaped sliding rod 424 slides inside the special-shaped sliding rod 413. When the special-shaped sliding rod 413 slides toward the inside of the first hollow tube 411, the convex rod 423 blocks the second annular plate 418, so that the annular baffle 417 no longer blocks the annular hole 416. The negative pressure inside the special-shaped sliding rod 413 will act outward on the inner cavity of the detection pipeline 2. At the same time, the second support rod 419 fixed on the second annular plate 418 will slide on the surface of the first support rod 414, so that the roller 415 and the inner cavity of the detection pipeline 2 fit more closely. When the screw rod 422 rotates, the special-shaped rod 424 and the special-shaped sliding rod 413 are respectively driven to move to realize the functions of extraction, pressure and support, so that the internal structure of the equipment is integrated and the production efficiency is improved.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] 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 petroleum pipeline pressure resistance detection device, comprising a base (1) and an auxiliary feeding mechanism (12) arranged inside the base (1), characterized in that: The auxiliary feeding mechanism (12) comprises a tooth plate (123), a first tooth rod (124), a second threaded rod (125) and a second tooth rod (127); the tooth plate (123) is slidably connected to the interior of the base (1); the outer wall of the tooth plate (123) is fixedly connected to a slide plate (122); the outer wall of the slide plate (122) is fixedly connected to a first spring (121); the first tooth rod (124) is rotatably connected to the interior of the base (1); the second threaded rod (125) is rotatably connected to the interior of the base (1); the first tooth rod (124) and the second threaded rod (125) are A transmission belt (126) is connected for transmission between the two parts; a second gear rod (127) is rotatably connected inside the base (1); the second gear rod (127) is meshed with a second threaded rod (125); two ends of the second gear rod (127) are fixedly connected to support feet (128); a second spring (129) is fixedly connected between the bottom of the support foot (128) and the base (1); a pressure sensor (1210) is fixedly connected inside the second spring (129) and between the support foot (128) and the base (1); and a clamping plate (4) is symmetrically slidably connected above the base (1); The interior of the clamp (4) includes a pumping and pressing mechanism (41), which includes a first hollow tube (411), a special-shaped slide rod (413), a second annular plate (418) and a first support rod (414). The first hollow tube (411) is fixedly connected to a side of the clamp (4) that is close to the first hollow tube (4). The side wall of the first hollow tube (411) that is away from the first hollow tube (4) is fixedly connected to the first annular plate (412). The special-shaped slide rod (413) is slidably connected to the interior of the first hollow tube (411). The side of the special-shaped slide rod (413) that is away from the first hollow tube (411) is rotatably connected to the first support rod (414) in an annular array. The first support rod (414) is fixedly connected to the side wall of the first hollow tube (411) that is away from the special-shaped slide rod (413). A roller (415) is rotatably connected, a side wall of the special-shaped slide rod (413) close to the first support rod (414) is provided with an annular hole (416), an outer wall of the special-shaped slide rod (413) is slidably connected to an annular baffle plate (417), the second annular plate (418) is fixedly connected to the outer wall of the annular baffle plate (417), a third spring (4110) is fixedly connected in an annular array between the second annular plate (418) and the special-shaped slide rod (413), a side of the second annular plate (418) close to the first support rod (414) is fixedly connected in an annular array to a second support rod (419), and one end of the second support rod (419) close to the first support rod (414) is slidably connected to the inside of the first support rod (414).

2. A petroleum pipeline compression detection device according to claim 1, characterized in that: The splint (4) further comprises an external support mechanism (42) inside, the external support mechanism (42) comprising a clamping block (425), a push rod (426), a fourth spring (427) and a clamping groove (428), the outer wall of the splint (4) is fixedly connected to a second motor (421), the output shaft of the second motor (421) is fixedly connected to a screw rod (422), a side of the first annular plate (412) away from the splint (4) is fixedly connected to convex rods (423) in an annular array, and the outer wall of the screw rod (422) is slidably connected to the second motor (421). A special-shaped rod (424) is provided, the clamping block (425) is symmetrically rotatably connected to the inside of the special-shaped slide rod (413), the inside of the special-shaped slide rod (413) is symmetrically slidably connected to a push rod (426), a fourth spring (427) is fixedly connected between one end of the push rod (426) away from the clamping block (425) and the special-shaped slide rod (413), and a clamping groove (428) is symmetrically opened on the inner wall of the first hollow tube (411), and one end of the clamping block (425) close to the first hollow tube (411) is clamped in the inside of the clamping groove (428).

3. The oil pipeline compression test device according to claim 1, characterized in that: A transmission mechanism (11) is arranged inside the base (1), and the transmission mechanism (11) comprises a first motor (111) and a first threaded rod (112), the first motor (111) is fixedly connected to a side wall of the base (1), the first threaded rod (112) is fixedly connected to an output end of the first motor (111), and the bottom of the clamping plate (4) is slidably connected to an outer wall of the first threaded rod (112).

4. The oil pipeline compression test device according to claim 1, characterized in that: A lifting plate (3) is slidably connected above the base (1), a detection pipe (2) is provided between the base (1) and the lifting plate (3), the detection pipe (2) is provided above the support leg (128), and the roller (415) is attached to the inner wall of the detection pipe (2).

5. The oil pipeline compression test device according to claim 1, characterized in that: The annular baffle (417) covers the annular hole (416), and the inner cavity of the special-shaped sliding rod (413) is in a closed state when the annular baffle (417) covers the annular hole (416).

6. The oil pipeline compression test device according to claim 4, characterized in that: A circular groove having a diameter equal to that of the detection pipe (2) is provided on one side of the clamping plate (4) close to the detection pipe (2).

7. The oil pipeline compression test device according to claim 1, characterized in that: An alarm is arranged inside the base (1), and the pressure sensor (1210) is electrically connected to the alarm.

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