Detection equipment for hydraulic engineering pipeline

Abstract

The invention is suitable for the technical field of pipeline detection, and provides a hydraulic engineering pipeline detection device which comprises a detection table, a sliding frame and a driving frame, the driving frame is fixedly connected to the detection table, the sliding frame is in sliding fit with the detection table, and the hydraulic engineering pipeline detection device further comprises a pressure applying assembly which is arranged on the driving frame and used for conducting pressure detection on a pipeline, the pressure applying assembly comprises a sliding table slidably connected into the driving frame, a motor is installed on the wall face of the sliding table, the output end of the motor is fixedly connected with a gear shaft, and the side, away from the motor, of the gear shaft is fixedly connected with a first supporting plate. The device has the beneficial effects that through the change of the meshing state of the movable toothed pipe and the driven gear and the change of the limiting state of the toothed plate in the first supporting plate by the clamping block, the detection effects of various different stress directions can be switched and achieved according to the detection requirements when the pressure applying assembly applies pressure to the pipeline, and the detection efficiency is improved. And the equipment can realize various different pressure applying functions through a simple mechanical structure.

Description

Technical Field

[0001] This invention belongs to the field of pipeline inspection technology, and in particular relates to an inspection device for water conservancy engineering pipelines. Background Technology

[0002] As a vital infrastructure for national economic and social development, the safety and stability of the pipeline system in water conservancy projects directly determine the overall operational efficiency and safety of the project. Whether for farmland irrigation, urban water supply, flood control and drainage, or inter-basin water transfer, pipelines must withstand complex operating conditions such as internal water pressure, external soil compression, and temperature changes over long periods. Existing pipeline inspection equipment has failed to address the pain points encountered in practical applications.

[0003] Existing pipeline inspection equipment mostly focuses on single-dimensional mechanical testing, such as only being able to achieve vertical plane compression or unidirectional local compression. However, in actual water conservancy pipelines, during service, they need to cope with multiple types of loads, such as opposing offset compression (such as asymmetric force caused by pipeline settlement), opposing vertical local compression (such as local impact caused by surrounding construction), and radial compression force (such as end force when pipeline is plugged and connected).

[0004] The existing equipment positioning method mostly uses mechanical clamps to clamp the outer wall of the pipe. On the one hand, uneven clamp pressure can easily cause pipe deformation, affecting the detection benchmark; on the other hand, clamp accessories need to be frequently replaced for pipes of different diameters, resulting in poor adaptability.

[0005] Water conservancy pipelines operate in complex and diverse environments. Some pipelines in high-latitude regions need to operate in low-temperature environments. The mechanical properties of pipeline materials are prone to decline due to low-temperature brittleness, increasing the risk of breakage. Most existing testing equipment can only be used for testing in normal temperature environments and cannot simulate low-temperature conditions. As a result, the test results cannot match the actual service environment, making it difficult to detect potential defects of pipelines at low temperatures in advance. Summary of the Invention

[0006] The purpose of this invention is to provide a testing device for water conservancy engineering pipelines, aiming to solve the technical problems existing in the prior art mentioned in the background.

[0007] The present invention is implemented as follows: a testing device for water conservancy engineering pipelines includes a testing platform, a slide, and a drive frame. The drive frame is fixedly connected to the testing platform, and the slide is slidably fitted on the testing platform. The device also includes:

[0008] A pressure-applying assembly, mounted on a drive frame, is used for pressure testing of pipelines. The pressure-applying assembly includes a slide table slidably connected inside the drive frame. A motor is mounted on the wall of the slide table. A gear shaft is fixedly connected to the output end of the motor. A first support plate is fixedly connected to the side of the gear shaft away from the motor. A first spring is fixedly connected between the first support plate and the wall of the slide table. A first round shaft is fixedly connected to the top of the first support plate and away from the gear shaft. A second support plate is rotatably connected to the outer wall of the gear shaft. A gear ring is fixedly connected to the side of the second support plate near the slide table. The gear shaft passes through the interior of the second support plate and the gear ring. A second spring is fixedly connected between the second support plate and the wall of the slide table. A second round shaft is fixedly connected to the bottom of the second support plate and away from the slide table. The gear ring meshes with a driven gear rotatably connected to the wall of the slide table. Both the gear shaft and the driven gear mesh with a movable gear tube movably connected to the slide table.

[0009] The positioning component, located inside the testing station, is used to fix the pipe and seal the inner cavity of the pipe;

[0010] The expansion assembly, located inside the carriage, is used to detect radial compressive force on the pipe end.

[0011] As a preferred technical solution of the present invention: the deflection angles of the first support plate and the second support plate are vertically symmetrical about the toothed shaft. The end of the movable toothed tube away from the second support plate is fixedly connected to a special-shaped rod. The slide and the detection table are fixedly connected to a stop plate on the side of the special-shaped rod in a staggered manner. Two inclined surfaces are symmetrically opened on the special-shaped rod. The two stop plates are respectively horizontal to the two inclined surfaces of the special-shaped rod. When the movable toothed tube is located on the side away from the second support plate, the movable toothed tube only meshes with the toothed shaft.

[0012] As another preferred technical solution of the present invention: a toothed plate is slidably connected to the bottom of the first support plate, a third spring is fixedly connected between the toothed plate and the inner wall of the first support plate, a third round shaft is fixedly connected to the bottom of the toothed plate, a cylinder is installed on the wall of the first support plate, a locking block is fixedly connected to the telescopic shaft of the cylinder, the locking block slides inside the groove opened on the first support plate, the locking block passes through the groove through the wall of the first support plate and engages with the toothed plate, a first pressure plate and a second pressure plate are rotatably connected between the third round shaft on the first support plate and the second round shaft at the bottom of the second support plate, the first pressure plate is slidably connected inside the second pressure plate, and a fourth spring is fixedly connected between the first pressure plate and the second pressure plate.

[0013] As another preferred technical solution of the present invention: the cylinder is controlled by the signal of the internal control system of the testing platform. When the cylinder retracts, the locking block is rigidly engaged with the toothed plate. When the cylinder extends, the locking block is flexibly engaged with the toothed plate. When the third spring is not extended, the third round shaft on the first support plate is horizontal with the second round shaft on the second support plate.

[0014] As another preferred technical solution of the present invention: the positioning component includes an annular disk, which is slidably engaged with a first through groove opened on the detection table. A plurality of fifth springs are fixedly connected between the annular disk and the detection table. A second through groove is opened on the detection table. The first through groove and the second through groove are connected to each other through an air guide pipe fixedly connected to the wall of the detection table. A first airbag connected to the second through groove is fixedly connected to the side of the wall of the detection table near the drive frame. A second airbag is fixedly connected to the slide, and an air inlet pipe connected to the inside of the second airbag is installed on the slide.

[0015] As another preferred technical solution of the present invention: the expansion assembly includes a bracket fixedly connected to the wall of the slide, a rotating shaft is rotatably connected to the middle section of the bracket near the slide, a limiting plate is fixedly connected to the end of the rotating shaft away from the bracket, a fixed seat is fixedly connected inside the slide, a guide plate is fixedly connected to the end of the fixed seat near the limiting plate, multiple sliding plates are slidably connected inside the guide plate, an arc-shaped plate is fixedly connected to the side of each sliding plate away from the guide plate, multiple limiting grooves are distributed in a circular array on the limiting plate, and limiting blocks that slide in cooperation with the limiting grooves are fixedly connected to the side of each sliding plate wall near the limiting plate, and a pressure sensor is installed on the surface of the arc-shaped plate.

[0016] As another preferred technical solution of the present invention: the slide has a cavity through it, the connection between the fixed seat and the slide is located inside the cavity, both sides of the cavity are arc-shaped, and the pressure sensor is electrically connected to the internal control system of the detection platform.

[0017] As another preferred technical solution of the present invention: the second pressure plate is provided with an arc surface to facilitate the placement of the pipe, the slide is equipped with an electric wire connected to an external power source, and the drive frame is provided with a drive device to control the lateral displacement of the slide.

[0018] The beneficial effects of the embodiments of the present invention are as follows:

[0019] 1. By changing the meshing state of the movable toothed tube and the driven gear, and by changing the limiting state of the toothed plate inside the first support plate by the locking block, the pressure application component can switch and achieve detection effects of multiple different force directions according to the detection needs when applying pressure to the pipeline, so that the equipment can achieve multiple different pressure application functions through a simple mechanical structure.

[0020] 2. During the rotation of the limiting plate and the limiting groove, the sliding plate will drive the arc plate to slide out from the inside of the guide plate, and apply radial extrusion force evenly to the inner wall of the pipe through the arc plate, thereby simulating the stress situation when the pipe end is connected to other pipes; by pouring liquid nitrogen into the inner cavity of the slide, the low temperature of the liquid nitrogen is conducted to the sliding plate and the arc plate through the fixed seat and the guide plate, so that the arc plate cools the pipe when it is in contact with the inner wall of the pipe, thereby simulating the pressure resistance of the pipe under low temperature conditions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a front view schematic diagram of the overall structure provided in an embodiment of the present invention;

[0023] Figure 3 This is a top view of the overall structure provided in an embodiment of the present invention;

[0024] Figure 4 This is a partial schematic diagram of the pressure application component structure provided in an embodiment of the present invention;

[0025] Figure 5 This is a partial explosion diagram of the pressure application component structure provided in an embodiment of the present invention;

[0026] Figure 6 This is a partial schematic diagram of the movable toothed tube structure provided in an embodiment of the present invention;

[0027] Figure 7 This is an exploded view of the overall structure of the pressure application component provided in an embodiment of the present invention;

[0028] Figure 8 This is an exploded view of the positioning component structure provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;

[0030] Figure 10 This is an exploded view of the expansion component structure provided in an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Testing table; 2. Carriage; 3. Drive frame; 4. Pressure application assembly; 5. Positioning assembly; 6. Expansion support assembly;

[0033] 41. Slide table; 42. Motor; 43. Gear shaft; 44. First support plate; 45. First spring; 46. First round shaft; 47. Second support plate; 48. Gear ring; 49. Second spring; 410. Second round shaft; 411. Driven gear; 412. Movable gear tube; 413. Irregular rod; 414. Support plate;

[0034] 4401. Gear plate; 4402. Third spring; 4403. Third round shaft; 4404. Cylinder; 4405. Locking block; 4406. Slide groove; 4407. First pressure plate; 4408. Second pressure plate; 4409. Fourth spring;

[0035] 51. Annular disc; 52. Fifth spring; 53. First airbag; 54. Air duct; 55. First through slot; 56. Second through slot; 57. Second airbag; 58. Air inlet pipe;

[0036] 61. Bracket; 62. Rotating shaft; 63. Limiting plate; 64. Fixing base; 65. Guide plate; 66. Slide plate; 67. Curved plate; 68. Limiting block; 69. Limiting groove; 610. Pressure sensor. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0039] like Figure 1 , Figures 4 to 7 As shown, in one embodiment, a testing device for water conservancy engineering pipelines is proposed, including a testing platform 1, a slide 2, and a drive frame 3. The drive frame 3 is fixedly connected to the testing platform 1, and the slide 2 is slidably fitted onto the testing platform 1. The device also includes:

[0040] The pressure application component 4, mounted on the drive frame 3, is used for pressure testing of the pipeline. The pressure application component 4 includes a slide 41 slidably connected inside the drive frame 3. A motor 42 is mounted on the wall of the slide 41. A gear shaft 43 is fixedly connected to the output end of the motor 42. A first support plate 44 is fixedly connected to the side of the gear shaft 43 away from the motor 42. A first spring 45 is fixedly connected between the first support plate 44 and the wall of the slide 41. A first round shaft 46 is fixedly connected to the top of the first support plate 44 and to the side away from the gear shaft 43. The outer wall of the gear shaft 43 is rotatably connected to... There is a second support plate 47, and a gear ring 48 is fixedly connected to the side of the second support plate 47 near the slide table 41. A gear shaft 43 passes through the interior of the second support plate 47 and the gear ring 48. A second spring 49 is fixedly connected between the second support plate 47 and the wall of the slide table 41. A second round shaft 410 is fixedly connected to the bottom of the second support plate 47 and the side away from the slide table 41. The gear ring 48 meshes with the driven gear 411 rotatably connected to the wall of the slide table 41. Both the gear shaft 43 and the driven gear 411 mesh with the movable gear tube 412 movably connected to the slide table 41.

[0041] Positioning component 5 is installed inside the testing station 1 and is used to fix the pipe and seal the inner cavity of the pipe;

[0042] The expansion assembly 6 is installed inside the slide 2 and is used to detect radial compressive force on the pipe end.

[0043] In practical application, the operator places the pipe to be inspected on the second pressure plate 4408 and fixes the pipe using the positioning component 5 on the inspection table 1 and the slide 2, and then begins the inspection of the pipe.

[0044] 1. When a vertical plane compression test is required on the pipeline, the operator uses the internal control system of the equipment to drive the motor 42 to rotate the gear shaft 43. When the gear shaft 43 rotates, it will drive the first support plate 44 to rotate together, so that the second pressure plate 4408 on the first round shaft 46 will exert downward pressure on the pipeline. When the gear shaft 43 rotates, it will drive the gear ring 48 to rotate in the opposite direction through the transmission of the movable gear tube 412 and the driven gear 411. The reverse rotation of the gear ring 48 will drive the second support plate 47 and the second round shaft 410 to rotate together, so that the second round shaft 410 and the first round shaft 46 will be relatively close, applying pressure to both sides of the pipeline at the same time. At this time, because the locking block 4405 is engaged with the gear plate 4401, the third round shaft 4403 and the first support plate 44 are in a fixed state. The second pressure plate 4408 will remain horizontal together because the third round shaft 4403 and the second round shaft 410 are horizontal, so that the pressure application component 4 can perform planar pressure test on the pipeline through the second pressure plate 4408.

[0045] 2. When a localized extrusion test of the pipeline is required, the operator slides the movable toothed tube 412 inside the slide table 41 and disengages it from the driven gear 411. At this time, because there is no transmission from the movable toothed tube 412 and driven gear 411 to the toothed ring 48, the toothed ring 48 and the second support plate 47 remain stationary when the toothed shaft 43 rotates. When the first support plate 44 rotates, the first circular shaft 46 and the third circular shaft 4403 at the end of the first support plate 44 will both move towards the extrusion point of the pipeline. Because the second support plate 47 is stationary, the rotation of the first support plate 44 will cause the second pressure plate 4408 to rotate around the first circular shaft 46, and the first pressure plate 4407 to rotate around the third circular shaft 4403. The sliding distance of the first pressure plate 4407 inside the second pressure plate 4408 increases and the fourth spring 4409 is elastically stretched. After rotation, the second pressure plate 4408 changes from a horizontal state to an inclined state, and the contact surface between the second pressure plate 4408 and the pipeline also changes from one side to the other, thereby realizing the detection of local extrusion of the pipeline by opposing deviation.

[0046] like Figure 1 , Figures 4 to 7 As shown, in a preferred embodiment of the present invention, the deflection angles of the first support plate 44 and the second support plate 47 are vertically symmetrical about the toothed shaft 43. The end of the movable toothed tube 412 away from the second support plate 47 is fixedly connected to a special-shaped rod 413. The slide 2 and the detection table 1 are offset and fixedly connected to a stop plate 414 on the side close to the special-shaped rod 413. Two inclined surfaces are symmetrically opened on the special-shaped rod 413. The two stop plates 414 are respectively horizontal to the two inclined surfaces of the special-shaped rod 413. When the movable toothed tube 412 is located on the side away from the second support plate 47, the movable toothed tube 412 only meshes with the toothed shaft 43.

[0047] like Figures 4 to 7 As shown, in another preferred embodiment of the present invention, a toothed plate 4401 is slidably connected to the bottom of the first support plate 44, a third spring 4402 is fixedly connected between the toothed plate 4401 and the inner wall of the first support plate 44, a third round shaft 4403 is fixedly connected to the bottom of the toothed plate 4401, a cylinder 4404 is mounted on the wall of the first support plate 44, and a locking block 4405 is fixedly connected to the telescopic shaft of the cylinder 4404. The locking block 4405 slides in the groove 4 opened on the first support plate 44. Inside 406, the locking block 4405 passes through the groove 4406 and engages with the toothed plate 4401 through the wall of the first support plate 44. The first pressure plate 4407 and the second pressure plate 4408 are rotatably connected between the third round shaft 4403 on the first support plate 44 and the second round shaft 410 at the bottom of the second support plate 47, respectively. The first pressure plate 4407 is slidably connected inside the second pressure plate 4408. The fourth spring 4409 is fixedly connected between the first pressure plate 4407 and the second pressure plate 4408.

[0048] In practical applications, the embodiments of the present invention are as follows:

[0049] 1. When a counter-vertical localized compression test is required on the pipeline, the operator controls the cylinders 4404 on the first support plate 44 and the second support plate 47 to extend. At this time, the toothed plates 4401 on the first support plate 44 and the second support plate 47 are both in a sliding state. The operator manipulates the first support plate 44 and the second support plate 47 to rotate together. The first circular shaft 46 and the second circular shaft 410, directly driven by the first support plate 44 and the second support plate 47, will compress the pipeline. When the third circular shaft 4403 compresses the pipeline, because the toothed plates 4401 are in a sliding state inside the first support plate 44 and the second support plate 47... In the dynamic state, after the third circular shaft 4403 is resisted by the pipeline, it will drive the toothed plate 4401 to slide out from the inside of the first support plate 44 and the second support plate 47 respectively, so that neither of the third circular shafts 4403 on both sides will apply pressure to the pipeline. At this time, the pressure on the pipeline only comes from the first circular shaft 46 and the second circular shaft 410. After the toothed plate 4401 slides out, the second pressure plate 4408 will rotate around the first circular shaft 46 and the second circular shaft 410, so that the first circular shaft 46 and the second circular shaft 410 will apply force to the pipeline through the edge of the second pressure plate 4408, thereby realizing the opposite vertical local extrusion detection of the pipeline.

[0050] 2. When a unidirectional local compression test is required on the pipeline, the operator moves the position of the movable toothed tube 412 so that the second support plate 47 does not rotate synchronously with the first support plate 44. Therefore, when the first support plate 44 rotates, the second support plate 47 will not apply pressure to the pipeline. At this time, the operator controls the cylinder 4404 on the first support plate 44 to extend, so that the third circular shaft 4403 on the first support plate 44 will slide outward from the inside of the first support plate 44 when it is compressed with the pipeline, thus preventing pressure from being applied to the pipeline. At this time, only the rotation of the first circular shaft 46 can apply force to the pipeline, thereby realizing the unidirectional local compression test of the pipeline.

[0051] Driven by the internal drive device of the drive frame 3, the slide table 41 will reciprocate inside the drive frame 3. When the inclined surface of the shaped rod 413 is pressed against the abutment 414 on the slide 2, the shaped rod 413 will drive the movable tooth tube 412 to slide closer to the driven gear 411 inside the slide table 41, so that the driven gear 411 and the movable tooth tube 412 mesh. When the inclined surface of the shaped rod 413 is pressed against the abutment 414 on the detection table 1, the shaped rod 413 will drive the movable tooth tube 412 to slide away from the driven gear 411 inside the slide table 41, so that the driven gear 411 is disengaged from the movable tooth tube 412.

[0052] By changing the meshing state of the movable toothed tube 412 and the driven gear 411, and by changing the limiting state of the toothed plate 4401 inside the first support plate 44 by the locking block 4405, the pressure application component 4 can switch and achieve detection effects of multiple different force directions according to the detection needs when applying pressure to the pipeline, so that the equipment can achieve multiple different pressure application functions through a simple mechanical structure.

[0053] like Figure 7 As shown, in another preferred embodiment of the present invention, the cylinder 4404 is controlled by the signal of the internal control system of the testing platform 1. When the cylinder 4404 retracts, the locking block 4405 is rigidly engaged with the toothed plate 4401. When the cylinder 4404 extends, the locking block 4405 is flexibly engaged with the toothed plate 4401. When the third spring 4402 is not extended, the third round shaft 4403 on the first support plate 44 is horizontal to the second round shaft 410 on the second support plate 47.

[0054] like Figure 2 , Figure 8 and Figure 9 As shown, in another preferred embodiment of the present invention, the positioning component 5 includes an annular disk 51, which is slidably engaged with a first through groove 55 opened on the detection table 1. A plurality of fifth springs 52 are fixedly connected between the annular disk 51 and the detection table 1. A second through groove 56 is opened on the detection table 1. The first through groove 55 and the second through groove 56 are connected to each other through an air guide pipe 54 fixedly connected to the wall of the detection table 1. A first airbag 53 connected to the second through groove 56 is fixedly connected to the side of the wall of the detection table 1 near the drive frame 3. A second airbag 57 is fixedly connected to the slide 2. An air inlet pipe 58 connected to the inside of the second airbag 57 is installed on the slide 2.

[0055] In practical application, the operator first places the pipe to be tested on the second pressure plate 4408, and then controls the slide 2 to slide on the testing platform 1. During the sliding process, the slide 2 will insert the second airbag 57 into the opening at the end of the pipe. After the second airbag 57 is fully inserted into the pipe, the operator uses an external air pump to inflate the second airbag 57 through the air inlet pipe 58, thereby sealing and fixing the end of the pipe with the second airbag 57. At this time, the lateral movement of the slide 2 will push the pipe to move closer to the testing platform 1. When the end of the pipe is squeezed against the annular disc 51 on the testing platform 1, the annular disc 51 will slide into the testing platform 1 and cause the fifth spring 52 to elastically contract. After the internal space of the first through groove 55 contracts, the air inside it is transported to the inside of the first airbag 53 through the air guide pipe 54 and the second through groove 56. The first airbag 53 expands and fills the inside of the pipe, finally sealing and fixing the pipe. The sealing and fixing of the inside of the pipe is achieved by the expansion of the second airbag 57 and the first airbag 53 inside the pipe.

[0056] Staff can use an external air pump to pressurize the inside of the pipe through the inner cavity of the slide 2 to perform tests on the pipe under high pressure.

[0057] like Figure 3 , Figure 9 and Figure 10 As shown, in another preferred embodiment of the present invention, the expansion assembly 6 includes a bracket 61 fixedly connected to the wall of the slide 2. A rotating shaft 62 is rotatably connected to the middle section of the bracket 61 near the slide 2. A limiting plate 63 is fixedly connected to the end of the rotating shaft 62 away from the bracket 61. A fixed seat 64 is fixedly connected inside the slide 2. A guide plate 65 is fixedly connected to the end of the fixed seat 64 near the limiting plate 63. Multiple sliding plates 66 are slidably connected inside the guide plate 65. An arc-shaped plate 67 is fixedly connected to the side of each sliding plate 66 away from the guide plate 65. Multiple limiting grooves 69 are arranged in a circular array on the limiting plate 63. A limiting block 68 that slides with the limiting groove 69 is fixedly connected to the side of the wall of the sliding plate 66 near the limiting plate 63. A pressure sensor 610 is installed on the surface of the arc plate 67.

[0058] In practical application, the operator releases the gas from the second airbag 57 and pulls the pipe away from the slide 2. When the end of the pipe is removed from the pressure sensor 610, the control system controls the rotating shaft 62 to rotate. At this time, because the fixed seat 64 and the guide plate 65 are in a fixed and stationary state, the rotation of the limiting plate 63 driven by the rotating shaft 62 will cause the limiting groove 69 opened on the limiting plate 63 to rotate together. The sliding plate 66 slides inside the limiting groove 69 because the limiting block 68 on its surface slides inside the limiting groove 69, and the sliding plate 66 itself slides inside the guide plate 65. Therefore, during the rotation of the limiting groove 69 driven by the limiting plate 63, the sliding plate 66 will drive the arc plate 67 to slide out from inside the guide plate 65, and apply radial extrusion force evenly to the inner wall of the pipe through the arc plate 67, thereby simulating the force situation when the end of the pipe is inserted into other pipes.

[0059] Workers can pour liquid nitrogen into the inner cavity of the slide 2, so that the low temperature of the liquid nitrogen can be conducted to the slide plate 66 and the arc plate 67 through the fixed seat 64 and the guide plate 65. When the arc plate 67 is in contact with the inner wall of the pipe, it cools the pipe, thereby simulating the pressure resistance of the pipe under low temperature conditions.

[0060] like Figure 9 As shown, in another preferred embodiment of the present invention, a cavity is provided through the slide 2, the connection between the fixed seat 64 and the slide 2 is located inside the cavity, both sides of the cavity are arc-shaped, and the pressure sensor 610 is electrically connected to the internal control system of the detection table 1.

[0061] like Figure 4As shown, in another preferred embodiment of the present invention, the second pressure plate 4408 is provided with an arc surface to facilitate the placement of pipes, the slide table 41 is equipped with a wire connected to an external power source, and the drive frame 3 is provided with a drive device to control the lateral displacement of the slide table 41.

[0062] In practical applications, the drive frame 3 can use a drive device to move the slide 41 laterally inside the drive frame 3, so that when the pressure application component 4 applies pressure to the pipeline for testing, the lateral movement of the slide 41 can simulate the changing state of the pipeline under pressure, thereby making the test results more effective.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for water conservancy pipelines, comprising a testing platform (1), a slide (2), and a drive frame (3), wherein the drive frame (3) is fixedly connected to the testing platform (1), and the slide (2) is slidably fitted onto the testing platform (1), characterized in that, Also includes: A pressure-applying assembly (4), mounted on a drive frame (3), is used to perform pressure testing on the pipeline. The pressure-applying assembly (4) includes a slide (41) slidably connected inside the drive frame (3). A motor (42) is mounted on the wall of the slide (41). A gear shaft (43) is fixedly connected to the output end of the motor (42). A first support plate (44) is fixedly connected to the side of the gear shaft (43) away from the motor (42). A first spring (45) is fixedly connected between the first support plate (44) and the wall of the slide (41). A first round shaft (46) is fixedly connected to the top of the first support plate (44) and the side away from the gear shaft (43). The outer wall of the gear shaft (43) is rotatably connected to... There is a second support plate (47), and a gear ring (48) is fixedly connected to the side of the second support plate (47) near the slide (41). The gear shaft (43) passes through the interior of the second support plate (47) and the gear ring (48). A second spring (49) is fixedly connected between the second support plate (47) and the wall of the slide (41). A second round shaft (410) is fixedly connected to the bottom of the second support plate (47) and the side away from the slide (41). The gear ring (48) meshes with the driven gear (411) rotatably connected to the wall of the slide (41). The gear shaft (43) and the driven gear (411) both mesh with the movable gear tube (412) movably connected to the slide (41). The positioning component (5) is set inside the testing table (1) to fix the pipe and seal the inner cavity of the pipe; The expansion assembly (6) is installed inside the slide (2) and is used to detect radial extrusion pressure on the pipe end.

2. The testing equipment for water conservancy engineering pipelines according to claim 1, characterized in that, The deflection angles of the first support plate (44) and the second support plate (47) are vertically symmetrical about the toothed shaft (43). The end of the movable toothed tube (412) away from the second support plate (47) is fixedly connected to a special-shaped rod (413). The slide (2) and the detection table (1) are fixedly connected to a stop plate (414) on the side close to the special-shaped rod (413). Two inclined surfaces are symmetrically opened on the special-shaped rod (413). The two stop plates (414) are respectively horizontal to the two inclined surfaces of the special-shaped rod (413). When the movable toothed tube (412) is located on the side away from the second support plate (47), the movable toothed tube (412) only meshes with the toothed shaft (43).

3. The testing equipment for water conservancy engineering pipelines according to claim 1, characterized in that, A toothed plate (4401) is slidably connected to the bottom of the first support plate (44). A third spring (4402) is fixedly connected between the toothed plate (4401) and the inner wall of the first support plate (44). A third round shaft (4403) is fixedly connected to the bottom of the toothed plate (4401). A cylinder (4404) is installed on the wall of the first support plate (44). A locking block (4405) is fixedly connected to the telescopic shaft of the cylinder (4404). The locking block (4405) slides inside the sliding groove (4406) opened on the first support plate (44). The locking block (4405) passes through the wall of the first support plate (44) and engages with the toothed plate (4401) via the sliding groove (4406). The first pressure plate (4407) and the second pressure plate (4408) are rotatably connected between the third round shaft (4403) on the first support plate (44) and the second round shaft (410) at the bottom of the second support plate (47). The first pressure plate (4407) is slidably connected to the inside of the second pressure plate (4408). A fourth spring (4409) is fixedly connected between the first pressure plate (4407) and the second pressure plate (4408).

4. The testing equipment for water conservancy engineering pipelines according to claim 3, characterized in that, The cylinder (4404) is controlled by the internal control system signal of the test bench (1). When the cylinder (4404) retracts, the locking block (4405) is rigidly engaged with the toothed plate (4401). When the cylinder (4404) extends, the locking block (4405) is flexibly engaged with the toothed plate (4401). When the third spring (4402) is not extended, the third round shaft (4403) on the first support plate (44) is horizontal with the second round shaft (410) on the second support plate (47).

5. The testing equipment for water conservancy engineering pipelines according to claim 1, characterized in that, The positioning component (5) includes an annular disk (51), which is slidably engaged with a first through slot (55) on the testing table (1). A plurality of fifth springs (52) are fixedly connected between the annular disk (51) and the testing table (1). A second through slot (56) is provided on the testing table (1). The first through slot (55) and the second through slot (56) are connected by an air guide pipe (54) fixedly connected to the wall of the testing table (1). A first airbag (53) connected to the second through slot (56) is fixedly connected to the side of the wall of the testing table (1) near the drive frame (3). A second airbag (57) is fixedly connected to the slide (2). An air inlet pipe (58) connected to the inside of the second airbag (57) is installed on the slide (2).

6. The testing equipment for water conservancy engineering pipelines according to claim 1, characterized in that, The expansion assembly (6) includes a bracket (61) fixedly connected to the wall of the slide (2). A rotating shaft (62) is rotatably connected to the middle section of the bracket (61) near the slide (2). A limiting plate (63) is fixedly connected to the end of the rotating shaft (62) away from the bracket (61). A fixing seat (64) is fixedly connected inside the slide (2). A guide plate (65) is fixedly connected to the end of the fixing seat (64) near the limiting plate (63). (65) has multiple sliding plates (66) inside. Each sliding plate (66) is fixedly connected to an arc-shaped plate (67) on the side away from the guide plate (65). Multiple limiting grooves (69) are distributed in a ring array on the limiting plate (63). Each sliding plate (66) is fixedly connected to a limiting block (68) that slides with the limiting groove (69) on the side of the wall of the sliding plate (66) close to the limiting plate (63). A pressure sensor (610) is installed on the surface of the arc-shaped plate (67).

7. The testing equipment for water conservancy engineering pipelines according to claim 6, characterized in that, The slide (2) has a cavity running through it. The connection between the fixed seat (64) and the slide (2) is located inside the cavity. Both sides of the cavity are arc-shaped. The pressure sensor (610) is electrically connected to the internal control system of the detection table (1).

8. The testing equipment for water conservancy engineering pipelines according to claim 3, characterized in that, The second pressure plate (4408) has an arc surface that facilitates pipe placement. The slide (41) is equipped with a wire connected to an external power source. The drive frame (3) has a drive device inside that controls the lateral displacement of the slide (41).

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