Multifunctional pressure testing device for valves and pipelines

Abstract

The invention discloses a multifunctional pressure test device for valves and pipelines, which relates to the field of air tightness detection and comprises a mounting table, and a workpiece positioning assembly and a passage interface sealing and adjusting assembly are fixedly mounted above the mounting table. The access interface sealing adjusting assembly comprises a first sliding rail, a first sliding block, a mounting frame, a telescopic interface sealing adjusting assembly and a rotary adjusting assembly, and the telescopic interface sealing adjusting assembly is rotationally connected to the interior of the mounting frame. According to the device, through mutual matching adjustment of a first sliding rail, a first sliding block and a rotary adjusting assembly, the space coordinates and the deflection angle of a telescopic connector sealing adjusting assembly are precisely adjusted and controlled, and the adjusting mechanism allows the device to be flexibly matched according to the specific installation direction of a valve or a pipeline passage port; the application limitation of traditional pressure testing equipment is effectively broken through, the type range of testable objects is remarkably expanded, and efficient pressure testing of valves and pipeline systems of different specifications and layouts is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection, in particular to a multifunctional pressure testing device for valves and pipelines. Background Art

[0002] The pressure test device for valves and pipelines is a special equipment used to test the sealing, strength and overall performance of valves and pipelines under pressure. By injecting liquid (usually water) or gas into the valve or pipeline and gradually increasing the pressure to the specified pressure value, it simulates the pressure environment under operating conditions. At the same time, it cooperates with pressure monitoring instruments, leakage detection devices and other components to monitor pressure changes and whether there is leakage in real time to determine whether the valves and pipelines meet the design standards and safety requirements, and ensure that there will be no safety hazards such as rupture and leakage in actual operation.

[0003] In the prior art, there is a valve air tightness testing device with Chinese patent number CN117782445B, which includes a testing platform, a cylinder is installed at the upper edge of the testing platform through a bracket, the telescopic end of the cylinder is fixedly connected to a mounting plate, the lower end face of the mounting plate is fixedly connected to two L-shaped vertical rods, and the ends of the two L-shaped vertical rods away from the mounting plate are provided with fixing mechanisms, which are used to fix the valve to be tested, and an air intake unit is provided in the fixing mechanism, which is used to inflate the valve to be tested, and a storage tank is fixedly connected to the upper end face of the testing platform, the length of the storage tank is greater than the length of the valve, and two receiving plates are slidably connected above the storage tank.

[0004] However, when performing airtight pressure tests on specialized valves and pipes with multiple passageways, existing pressure testing equipment is difficult to flexibly adapt to the passage layout and interface locations of the test objects. This forces companies to customize specialized pressure testing equipment for specific valves and pipes. This significantly prolongs equipment preparation cycles and leads to a significant increase in procurement and maintenance costs for testing equipment. Summary of the Invention

[0005] The object of the present invention is to provide a multifunctional pressure testing device for valves and pipelines to solve the problem raised in the above background art that the existing pressure testing devices are difficult to flexibly adapt according to the passage layout and interface position of the object being tested.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multifunctional pressure testing device for valves and pipelines, comprising a mounting platform, on top of which a workpiece positioning assembly and a passage interface sealing adjustment assembly are fixedly mounted, the passage interface sealing adjustment assembly comprising a No. 1 slide rail, a No. 1 slider, a mounting frame, a telescopic interface sealing adjustment assembly and a rotation adjustment assembly, the telescopic interface sealing adjustment assembly is rotatably connected to the inside of the mounting frame, the driving end of the rotation adjustment assembly is transmission-connected to one side of the telescopic interface sealing adjustment assembly, the two No. 1 sliders are respectively fixedly connected to the two ends of one side of the mounting frame, the No. 1 slider is slidably connected to the outside of the No. 1 slide rail, the telescopic interface sealing adjustment assembly comprises an electric push rod, a mounting plate, an air cabin and a No. 1 positioning cylinder, the mounting plate is fixedly mounted on the driving end of the electric push rod, the air cabin is fixedly mounted at the center of one side of the mounting plate, the No. 1 positioning cylinder is fixedly connected to the center of the other end of the air cabin, and a sealing ring is fixedly bonded to the outside of one end of the No. 1 positioning cylinder.

[0007] Preferably, a pressure detector is provided on the outside of the air cabin, a probe of the pressure detector is provided inside the air cabin, and the outside of the air cabin is fixedly connected to an air supply pipe.

[0008] Preferably, the rotation adjustment assembly includes a drive assembly, a drive gear, a transmission gear and a transmission shaft. The drive end of the drive assembly is fixedly connected to the center of the drive gear, the drive gear and the transmission gear are engaged with each other, the center of the transmission gear is fixedly connected to one end of the transmission shaft, and the other end of the transmission shaft is movable through one side of the mounting frame and fixedly connected to one side of the telescopic interface sealing adjustment assembly. The drive assembly includes a drive motor and a speed changer, and the output end of the drive motor is transmission-connected to the input end of the speed changer.

[0009] Preferably, the workpiece positioning assembly includes a debris collecting assembly, a workpiece extrusion positioning assembly and a workpiece supporting assembly, and the workpiece supporting assembly is arranged between the debris collecting assembly and the workpiece extrusion positioning assembly.

[0010] Preferably, the debris collection assembly includes a debris collection bin and a No. 2 positioning cylinder, one end of the No. 2 positioning cylinder is used to block the passage port, the other end of the No. 2 positioning cylinder is fixedly connected to one side of the debris collection bin, and a sealing plug is movably connected inside the No. 2 positioning cylinder.

[0011] Preferably, the workpiece support assembly includes a No. 2 slide rail, a No. 2 slider and a workpiece supporter, the workpiece supporter is fixedly mounted on one side of the No. 2 slider, and the No. 2 slider is slidably connected to one side of the No. 2 slide rail.

[0012] Preferably, the workpiece extrusion positioning assembly includes a side locator, a screw rod, and a No. 3 slider. The side locator is fixedly mounted on one side of the No. 3 slider, and one end of the screw rod is threadedly connected to the inside of the side locator.

[0013] Preferably, one side of the side locator is fixedly connected to a positioning rod, and another sealing ring is fixedly bonded to the outer side of the positioning rod.

[0014] Preferably, the workpiece support includes a support frame and an arc-shaped support groove, one end of the support frame is fixedly connected to one side of the arc-shaped support groove, both ends of the arc-shaped support groove are respectively fixedly connected to a limit stop frame, and a soft pad is fixedly bonded to one side of the limit stop frame.

[0015] Preferably, an air outlet is provided on the other side of the debris collection bin, and a filter is fixedly installed inside the air outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by means of the coordinated adjustment of the No. 1 slide rail, the No. 1 slider, and the rotary adjustment assembly, and by precisely controlling the spatial coordinates and deflection angle of the telescopic interface sealing adjustment assembly, this adjustment mechanism allows the device to be flexibly adapted according to the specific installation orientation of the valve or pipeline passage port, effectively breaking through the application limitations of traditional pressure testing equipment, significantly expanding the range of testable objects, and achieving efficient pressure testing of valves and pipeline systems of different specifications and layouts.

[0017] 2. In this invention, gas blows impurities from the inner cavity through the second positioning cylinder into the debris collection bin. The gas then passes through the filter and is blown out from the interior of the debris collection bin. The filter traps the debris inside the bin. This impurity cleaning mechanism achieves efficient, non-contact removal of impurities from valve and pipe cavities, significantly improving cleaning efficiency and cleanliness compared to traditional manual cleaning methods. The filter's interception design not only effectively separates gas from solid debris, preventing secondary contamination of the system, but also facilitates subsequent centralized cleaning of the debris collection bin, reducing maintenance costs.

[0018] 3. The triple positioning of the debris collection assembly, workpiece support, and side locators in this invention effectively offsets the lateral forces and vibrations generated by internal pressure during the pressure test, avoiding test errors or seal failure risks caused by workpiece displacement. The combination of the limit stop and side locators provides dual circumferential and axial constraints on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of a passage interface sealing adjustment component in a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of a telescopic interface sealing adjustment component in a multifunctional pressure testing device for valves and pipelines of the present invention; Figure 4This is a schematic diagram of the three-dimensional structure of a rotary adjustment component in a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 5 This is a structural schematic diagram of a workpiece positioning assembly in a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 6 This is a structural schematic diagram of a debris collection component in a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 7 This is a structural schematic diagram of a workpiece support assembly in a multifunctional pressure testing device for valves and pipelines according to the present invention; Figure 8 The present invention provides a schematic structural diagram of a workpiece extrusion and positioning assembly in a multifunctional pressure testing device for valves and pipelines.

[0020] Figure: 1. Mounting table; 2. Workpiece positioning assembly; 21. Debris collection assembly; 211. Debris collection bin; 212. Positioning cylinder No. 2; 213. Air outlet; 214. Filter; 22. Workpiece extrusion positioning assembly; 221. Side positioner; 222. Screw; 223. Slider No. 3; 224. Positioning rod; 23. Workpiece support assembly; 231. Slide rail No. 2; 232. Slider No. 2; 24. Workpiece support; 241. Support frame; 242. Arc support groove; 243. Limit stop Frame; 3. Passage interface sealing adjustment assembly; 31. Slide rail No. 1; 32. Slide block No. 1; 33. Mounting frame; 34. Telescopic interface sealing adjustment assembly; 341. Electric push rod; 342. Mounting plate; 343. Air chamber; 344. Positioning cylinder No. 1; 345. Sealing ring; 346. Pressure detector; 347. Air supply pipe; 35. Rotation adjustment assembly; 351. Drive gear; 352. Transmission gear; 353. Transmission shaft; 4. Drive assembly; 41. Drive motor; 42. Speed ​​variator. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1-Figure 5As shown: a multifunctional pressure testing device for valves and pipelines, including a mounting platform 1, on which a workpiece positioning component 2 and a passage interface sealing adjustment component 3 are fixedly installed respectively, and the passage interface sealing adjustment component 3 includes a No. 1 slide rail 31, a No. 1 slider 32, a mounting frame 33, a telescopic interface sealing adjustment component 34 and a rotation adjustment component 35, the telescopic interface sealing adjustment component 34 is rotatably connected to the inside of the mounting frame 33, and the driving end of the rotation adjustment component 35 is transmission-connected to one side of the telescopic interface sealing adjustment component 34, two No. 1 sliders 32 are respectively fixedly connected to the two ends of one side of the mounting frame 33, the No. 1 slider 32 is slidably connected to the outer side of the No. 1 slide rail 31, the telescopic interface sealing adjustment component 34 includes an electric push rod 341, a mounting plate 342, an air chamber 343 and a No. 1 positioning cylinder 344, the mounting plate 342 is fixedly mounted on the driving end of the electric push rod 341, the air chamber 343 is fixedly mounted at the center of one side of the mounting plate 342, The positioning cylinder 344 is fixedly connected to the center of the other end of the air cabin 343, and a sealing ring 345 is fixedly bonded to the outer side of one end of the No. 1 positioning cylinder 344. A pressure detector 346 is provided on the outside of the air cabin 343, and the probe of the pressure detector 346 is provided inside the air cabin 343. The outer side of the air cabin 343 is fixedly connected to the air supply pipe 347. The rotation adjustment assembly 35 includes a drive assembly 4, a drive gear 351, a transmission gear 352 and a transmission shaft 353. The drive end of the drive assembly 4 is fixedly connected to the center of the drive gear 351, and the drive gear 351 and the transmission gear 352 are engaged with each other. The center of the transmission gear 352 is fixedly connected to one end of the transmission shaft 353, and the other end of the transmission shaft 353 is movably passed through one side of the mounting frame 33 and fixedly connected to one side of the telescopic interface sealing adjustment assembly 34. The drive assembly 4 includes a drive motor 41 and a speed changer 42. The output end of the drive motor 41 is transmission-connected to the input end of the speed changer 42.

[0023] In this embodiment, when it is necessary to adjust the sealing point of the passage interface sealing adjustment component 3 according to the port position of the passage on the valve or pipeline, the position of the mounting bracket 33 is adjusted to the No. 1 slide rail 31, so that the driving end of the telescopic interface sealing adjustment component 34 is located at the upper end of the passage port, and then the rotation adjustment component 35 is started, the driving motor 41 drives the speed changer 42 to work, and the speed changer 42 drives the driving gear 351 to rotate. Under the transmission of the transmission gear 352, the transmission shaft 353 drives the telescopic interface sealing adjustment component 34 to rotate inside the mounting bracket 33, so that the driving end of the telescopic interface sealing adjustment component 34 is facing the passage port, the electric push rod 341 drives the mounting plate 342 to extend, and the No. 1 positioning cylinder 34 on one side of the mounting plate 342 is driven. 4 is inserted into the interior of the passage port, and the sealing ring 345 blocks the gap between the passage port and the No. 1 positioning cylinder 344. Then the air pump inflates the interior of the valve or pipeline through the air supply pipe 347. After the inflation is completed, the pointer change of the pressure detector 346 is observed to judge the air tightness. Through the mutual adjustment of the No. 1 slide rail 31, the No. 1 slider 32 and the rotary adjustment component 35, and the precise control of the spatial coordinates and deflection angle of the telescopic interface sealing adjustment component 34, the adjustment mechanism allows the device to be flexibly adapted according to the specific installation orientation of the valve or pipeline passage port, effectively breaking through the application limitations of traditional pressure testing equipment, significantly expanding the type range of its testable objects, and realizing efficient pressure testing of valves and pipeline systems of different specifications and layouts.

[0024] Example 2: Figures 1-6As shown, the multifunctional pressure testing device for valves and pipelines in the present invention includes a mounting platform 1, on which a workpiece positioning assembly 2 and a passage interface sealing adjustment assembly 3 are fixedly installed respectively. The passage interface sealing adjustment assembly 3 includes a No. 1 slide rail 31, a No. 1 slider 32, a mounting frame 33, a telescopic interface sealing adjustment assembly 34 and a rotation adjustment assembly 35. The telescopic interface sealing adjustment assembly 34 is rotatably connected to the inside of the mounting frame 33, and the driving end of the rotation adjustment assembly 35 is transmission-connected to one side of the telescopic interface sealing adjustment assembly 34. The two No. 1 sliders 32 are respectively fixedly connected to the two ends of one side of the mounting frame 33, and the No. 1 slider 32 is slidably connected to the outer side of the No. 1 slide rail 31. The telescopic interface sealing adjustment assembly 34 includes an electric push rod 341, a mounting plate 342, an air cabin 343 and a No. 1 positioning cylinder 344. The mounting plate 342 is fixedly mounted on the driving end of the electric push rod 341. At the moving end, the air cabin 343 is fixedly mounted at the center of one side of the mounting plate 342, and the No. 1 positioning cylinder 344 is fixedly connected to the center of the other end of the air cabin 343. A sealing ring 345 is fixedly bonded to the outer side of one end of the No. 1 positioning cylinder 344. The workpiece positioning assembly 2 includes a debris collection assembly 21, a workpiece extrusion positioning assembly 22 and a workpiece support assembly 23. The workpiece support assembly 23 is arranged between the debris collection assembly 21 and the workpiece extrusion positioning assembly 22. The debris collection assembly 21 includes a debris collection bin 211 and a No. 2 positioning cylinder 212. One end of the No. 2 positioning cylinder 212 is used to block the passage port. The other end of the No. 2 positioning cylinder 212 is fixedly connected to one side of the debris collection bin 211. An air outlet 213 is provided on the other side of the debris collection bin 211. A filter screen 214 is fixedly mounted inside the air outlet 213, and a sealing plug is movably connected to the interior of the No. 2 positioning cylinder 212.

[0025] In this embodiment, when impurities remain in the inner cavity of the valve or pipe, the sealing plug set inside the No. 2 positioning cylinder 212 can be removed. After all the ports of the valve or pipe are blocked, the blower delivers gas to the interior of the valve or pipe. The gas blows the impurities in the inner cavity through the No. 2 positioning cylinder 212 into the interior of the debris collection bin 211. The gas is then blown out from the interior of the debris collection bin 211 through the filter 214. The debris is blocked by the filter 214 inside the debris collection bin 211. Through the above-mentioned impurity cleaning mechanism, non-contact and efficient removal of impurities in the inner cavity of valves and pipes is achieved, which significantly improves the cleaning efficiency and cleanliness compared to traditional manual cleaning methods. The interception design of the filter 214 not only effectively separates gas and solid debris, avoiding secondary contamination of the system by impurities, but also facilitates the subsequent centralized cleaning of the debris collection bin 211, reducing maintenance costs.

[0026] Example 3: According to Figures 1-8As shown, the multifunctional pressure testing device for valves and pipelines in the present invention includes a mounting platform 1, on which a workpiece positioning component 2 and a passage interface sealing adjustment component 3 are fixedly installed respectively. The passage interface sealing adjustment component 3 includes a No. 1 slide rail 31, a No. 1 slider 32, a mounting frame 33, a telescopic interface sealing adjustment component 34 and a rotation adjustment component 35. The telescopic interface sealing adjustment component 34 is rotatably connected to the inside of the mounting frame 33, and the driving end of the rotation adjustment component 35 is transmission-connected to one side of the telescopic interface sealing adjustment component 34. The two No. 1 sliders 32 are connected to the mounting frame 33. The two ends of one side of the mounting frame 33 are fixedly connected respectively, and the No. 1 slider 32 is slidably connected to the outside of the No. 1 slide rail 31. The telescopic interface sealing adjustment component 34 includes an electric push rod 341, a mounting plate 342, an air chamber 343 and a No. 1 positioning cylinder 344. The mounting plate 342 is fixedly mounted on the driving end of the electric push rod 341, and the air chamber 343 is fixedly mounted at the center of one side of the mounting plate 342. The No. 1 positioning cylinder 344 is fixedly connected to the center of the other end of the air chamber 343. A sealing ring 345 is fixedly bonded to the outside of one end of the No. 1 positioning cylinder 344. The workpiece is fixed. The positioning assembly 2 includes a debris collection assembly 21, a workpiece extrusion positioning assembly 22 and a workpiece support assembly 23. The workpiece support assembly 23 is arranged between the debris collection assembly 21 and the workpiece extrusion positioning assembly 22. The workpiece support assembly 23 includes a second slide rail 231, a second slider 232 and a workpiece support 24. The workpiece support 24 is fixedly mounted on one side of the second slider 232. The second slider 232 is slidably connected to one side of the second slide rail 231. The workpiece extrusion positioning assembly 22 includes a side positioner 221, a screw rod 222, a third slider 223, and a side positioning The device 221 is fixedly installed on one side of the No. 3 slider 223, one end of the screw rod 222 is threadedly connected to the inside of the side locator 221, one side of the side locator 221 is fixedly connected to the positioning rod 224, and another sealing ring 345 is fixedly bonded to the outside of the positioning rod 224. The workpiece support 24 includes a support frame 241 and an arc-shaped support groove 242. One end of the support frame 241 is fixedly connected to one side of the arc-shaped support groove 242, and the two ends of the arc-shaped support groove 242 are respectively fixedly connected to the limit stop frame 243, and one side of the limit stop frame 243 is fixedly bonded with a soft pad.

[0027] In this embodiment, when using the workpiece positioning assembly 2 to fix the valve or pipe, one end of the workpiece is first clamped to one end of the debris collection assembly 21, and then the workpiece support 24 in the workpiece support assembly 23 is adjusted so that the workpiece support 24 provides a vertical upward support force on one side of the workpiece. At the same time, the limit stops 243 at both ends of the workpiece support 24 will limit the two sides of the passage to prevent the valve or pipe from rotating and deviating. Finally, another set of drive components 4 is started to drive the screw 222 to rotate. The screw 222 drives the side locator 221 and the third slide 223 to slide on the second slide rail 231, extending the positioning rod 224 into the interior of the other end of the workpiece. At the same time, the side locator 221 is against the other end of the workpiece to complete the positioning of the workpiece, significantly improving the stability and reliability of the valve or pipe during the test process. Through the triple positioning of the debris collection assembly 21, the workpiece support 24 and the side locator 221, the lateral force and vibration generated by the internal pressure during the pressure test can be effectively offset, avoiding the test error or sealing failure risk caused by workpiece displacement. The combination of the limit stop 243 and the side locator 221 forms a dual constraint on the workpiece in the circumferential and axial directions.

[0028] The method of use and working principle of this device are as follows: when it is necessary to adjust the sealing point of the passage interface sealing adjustment component 3 according to the port position of the passage on the valve or pipeline, the position of the mounting frame 33 is adjusted to the No. 1 slide rail 31, so that the driving end of the telescopic interface sealing adjustment component 34 is located at the upper end of the passage port, and then the rotary adjustment component 35 is started, the driving motor 41 drives the speed changer 42 to work, and the speed changer 42 drives the driving gear 351 to rotate. Under the transmission gear 352, the transmission shaft 353 drives the telescopic interface sealing adjustment component 34 to rotate inside the mounting frame 33, so that the driving end of the telescopic interface sealing adjustment component 34 is facing the passage port, the electric push rod 341 drives the mounting plate 342 to extend, and the No. 1 positioning cylinder 344 on one side of the mounting plate 342 extends into the interior of the passage port, and the sealing ring 345 blocks the gap between the passage port and the No. 1 positioning cylinder 344. Then the air pump inflates the interior of the valve or pipeline through the air supply pipe 347. After the inflation is completed, the pointer change of the pressure detector 346 is observed to judge the air tightness; When impurities remain in the inner cavity of the valve or pipe, the sealing plug set inside the No. 2 positioning cylinder 212 can be removed. After all the ports of the valve or pipe are blocked, the blower delivers gas to the interior of the valve or pipe. The gas blows the impurities in the inner cavity through the No. 2 positioning cylinder 212 into the interior of the debris collection bin 211. The gas then passes through the filter 214 and is blown out from the interior of the debris collection bin 211. The debris is blocked by the filter 214 inside the debris collection bin 211.

[0029] When using the workpiece positioning assembly 2 to fix the valve or pipe, first clamp one end of the workpiece to one end of the debris collection assembly 21, and then adjust the workpiece support 24 in the workpiece support assembly 23 so that the workpiece support 24 provides a vertical upward support force on one side of the workpiece. At the same time, the limit stops 243 at both ends of the workpiece support 24 will limit the two sides of the passage to prevent the valve or pipe from rotating and offset. Finally, start another set of drive components 4 to drive the screw rod 222 to rotate. The screw rod 222 drives the side locator 221 and the No. 3 slider 223 to slide on the No. 2 slide rail 231, extending the positioning rod 224 into the other end of the workpiece. At the same time, the side locator 221 is against the other end of the workpiece to complete the positioning of the workpiece.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional pressure testing device for valves and pipelines, comprising a mounting platform (1), characterized in that: A workpiece positioning assembly (2) and a passage interface sealing adjustment assembly (3) are fixedly mounted above the mounting table (1). The passage interface sealing adjustment assembly (3) comprises a No. 1 slide rail (31), a No. 1 slider (32), a mounting frame (33), a telescopic interface sealing adjustment assembly (34) and a rotation adjustment assembly (35). The telescopic interface sealing adjustment assembly (34) is rotationally connected to the interior of the mounting frame (33). The driving end of the rotation adjustment assembly (35) is transmission-connected to one side of the telescopic interface sealing adjustment assembly (34). The two No. 1 sliders (32) are fixedly connected to the mounting frame (33). At both ends of one side, a No. 1 slider (32) is slidably connected to the outside of the No. 1 slide rail (31), and the telescopic interface sealing adjustment component (34) includes an electric push rod (341), a mounting plate (342), an air chamber (343) and a No. 1 positioning cylinder (344). The mounting plate (342) is fixedly mounted on the driving end of the electric push rod (341), the air chamber (343) is fixedly mounted at the center of one side of the mounting plate (342), the No. 1 positioning cylinder (344) is fixedly connected to the center of the other end of the air chamber (343), and a sealing ring (345) is fixedly bonded to the outside of one end of the No. 1 positioning cylinder (344).

2. A multifunctional pressure testing device for valves and pipelines according to claim 1, characterized in that: A pressure detector (346) is provided on the outside of the air chamber (343), a probe of the pressure detector (346) is provided inside the air chamber (343), and an air supply pipe (347) is fixedly connected to the outside of the air chamber (343).

3. The multifunctional pressure testing device for valves and pipelines according to claim 1, characterized in that: The rotation adjustment assembly (35) includes a drive assembly (4), a drive gear (351), a transmission gear (352) and a transmission shaft (353). The drive end of the drive assembly (4) is fixedly connected to the center of the drive gear (351). The drive gear (351) and the transmission gear (352) are meshed with each other. The center of the transmission gear (352) is fixedly connected to one end of the transmission shaft (353). The other end of the transmission shaft (353) is movable through one side of the mounting frame (33) and fixedly connected to one side of the telescopic interface sealing adjustment assembly (34). The drive assembly (4) includes a drive motor (41) and a speed changer (42). The output end of the drive motor (41) is transmission-connected to the input end of the speed changer (42).

4. A multifunctional pressure testing device for valves and pipelines according to claim 2, characterized in that: The workpiece positioning assembly (2) comprises a debris collecting assembly (21), a workpiece extrusion positioning assembly (22), and a workpiece supporting assembly (23), wherein the workpiece supporting assembly (23) is arranged between the debris collecting assembly (21) and the workpiece extrusion positioning assembly (22).

5. A multifunctional pressure testing device for valves and pipelines according to claim 4, characterized in that: The debris collection assembly (21) comprises a debris collection bin (211) and a second positioning cylinder (212), one end of the second positioning cylinder (212) being used to block the passage port, the other end of the second positioning cylinder (212) being fixedly connected to one side of the debris collection bin (211), and a sealing plug being movably connected inside the second positioning cylinder (212).

6. A multifunctional pressure testing device for valves and pipelines according to claim 4, characterized in that: The workpiece support assembly (23) comprises a No. 2 slide rail (231), a No. 2 slider (232) and a workpiece support (24), wherein the workpiece support (24) is fixedly mounted on one side of the No. 2 slider (232), and the No. 2 slider (232) is slidably connected to one side of the No. 2 slide rail (231).

7. The multifunctional pressure testing device for valves and pipelines according to claim 5, characterized in that: The workpiece extrusion positioning assembly (22) comprises a side positioner (221), a screw rod (222), and a third slider (223). The side positioner (221) is fixedly mounted on one side of the third slider (223), and one end of the screw rod (222) is threadedly connected to the inside of the side positioner (221).

8. The multifunctional pressure testing device for valves and pipelines according to claim 7, characterized in that: One side of the side locator (221) is fixedly connected to a positioning rod (224), and another sealing ring (345) is fixedly bonded to the outside of the positioning rod (224).

9. The multifunctional pressure testing device for valves and pipelines according to claim 8, characterized in that: The workpiece support (24) comprises a support frame (241) and an arc-shaped support groove (242), one end of the support frame (241) is fixedly connected to one side of the arc-shaped support groove (242), and both ends of the arc-shaped support groove (242) are respectively fixedly connected to a limit stop frame (243), and a soft pad is fixedly bonded to one side of the limit stop frame (243).

10. The multifunctional pressure testing device for valves and pipelines according to claim 4, characterized in that: An air outlet (213) is provided on the other side of the debris collection bin (211), and a filter (214) is fixedly installed inside the air outlet (213).

Images