Variable Pressure Test Platform Based on Valve Body Seal Detection

Abstract

The present invention relates to the field of valve body detection technology, specifically a variable pressure test platform based on valve body sealing detection, including a test frame, the top of the test frame is fixedly installed with a top support frame 1 and a top support frame 2, a bearing platform is installed on the top of the test frame and between the top support frame 1 and the top support frame 2, and a dynamic bearing frame is arranged on the top of the bearing platform. The dynamic bearing frame is composed of a top plate and two limit frames, a frame groove is opened in the middle of the limit frame, and the two opposite groove walls in the same frame groove are composed of three transverse walls and two inclined walls, the frame groove is matched with a driving roller with an annular groove, and the bearing platform is slidably connected to two opposing bases through an I-type track symmetrically fixed on its top; compared with the prior art, the present invention breaks through the limitations of static detection of valve body sealing, accurately quantifies leakage through dynamic voltage transformation and multi-dimensional vibration simulation, and significantly improves detection reliability and working condition coverage.

Description

Technical Field

[0001] The present invention relates to the technical field of valve body detection, in particular to a variable pressure test platform based on valve body sealing detection. Background Art

[0002] The valve body is the outer shell of the valve, which houses and fixes the internal parts of the valve to ensure the normal operation of the valve during opening and closing. The valve body is usually a hollow tubular or cavity structure, connected to the pipeline at both ends, and has a channel designed inside for fluid to pass through.

[0003] Traditional valve body testing is limited to static pressure environments and is difficult to match actual working conditions. Valves such as high-pressure ball valves and pressure reducing valves often face pressure fluctuations in practice. Traditional fixed pressure testing cannot reflect changes in sealing performance under different pressure gradients, and it is difficult to identify sealing failure points under extreme pressures, resulting in a lack of reliability and comprehensiveness in the test results. In terms of dynamic working condition simulation, the actual operation of the valve body is affected by the coupling of fluid impact and mechanical vibration, and traditional detection methods are mostly static. Even if there is vibration simulation, it is often single-dimensional and non-adjustable. It is unable to simulate multi-dimensional vibrations and complex alternating stress environments, resulting in inaccurate detection of sealing ring fatigue life and sealing stability. Summary of the Invention

[0004] The purpose of the present invention is to provide a variable pressure test platform based on valve body sealing detection, so as to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a variable pressure test platform based on valve body sealing detection, comprising a test frame, wherein a top support frame 1 and a top support frame 2 are fixedly installed on the top of the test frame, a bearing platform is installed on the top of the test frame and located between the top support frame 1 and the top support frame 2, and a dynamic bearing frame is provided on the top of the bearing platform;

[0006] The dynamic bearing frame is composed of a top plate and two limit frames. A frame groove is opened in the middle of the limit frame, and the two opposite groove walls in the same frame groove are composed of three horizontal walls and two inclined walls. The frame groove cooperates with a driving roller with an annular groove.

[0007] Furthermore, the carrying platform is slidably connected to two opposing bases via an I-shaped track symmetrically fixed on the top thereof, the tops of the opposing bases are fixedly connected to a connecting block, and the same positions on both side walls of the connecting block are fixedly connected to a main positioning cylinder and an auxiliary positioning cylinder via supports;

[0008] The main positioning cylinder and the auxiliary positioning cylinder are respectively slidably connected with a main slide rod and an auxiliary slide rod, one end of the main slide rod and the auxiliary slide rod are fixedly connected to the same side wall of the support plate, and the other ends of the main slide rod and the auxiliary slide rod are fixedly connected to the inner walls of the main positioning cylinder and the auxiliary positioning cylinder with a compression spring, a bracket is installed on the outside of the support plate, and the driving roller is movably connected to the bracket through a bearing.

[0009] Furthermore, a linkage arm is movably connected to the top midpoint of the supporting platform through a bearing, and both ends of the linkage arm are movably connected to a connecting rod through a bearing, and the end of the connecting rod away from the linkage arm is rotatably connected to a corresponding opposite base;

[0010] An electric push rod 1 is fixedly installed on the top of the supporting platform and on both sides of the linkage arm, and the output ends of the two electric push rods 1 are fixedly connected to the same opposite side wall of the base.

[0011] Furthermore, a swing mechanism is fixedly installed at the bottom center position of the top plate, and the swing mechanism includes a frame, an eccentric block and motor 1. The frame is fixedly installed at the bottom center position of the top plate, and both sides of the eccentric block are fixedly connected with a rotating shaft, and one end of the rotating shaft is movably connected to the frame through a bearing. Motor 1 is installed on the side wall of the frame, and the output end of motor 1 is fixedly connected to one of the rotating shafts.

[0012] Furthermore, two of the limit frames are symmetrically fixedly installed on both sides of the bottom of the top plate, and an arc-shaped clamp for fixing the valve body is installed on the top of the top plate.

[0013] Furthermore, slide plates 1 and 2 are slidably mounted on the top of the top support frame 1 and the top support frame 2, respectively. Conduit 1 and conduit 2 with bending functions are mounted on the top of the slide plates 1 and 2 through corresponding fixing clamps, and conduit 1 and conduit 2 are connected to a cover at a position close to the valve body. One end of conduit 1 is connected to a water pump through an adjusting mechanism, and the adjusting mechanism and the water pump are both mounted inside the test frame. A water tank is also mounted inside the test frame, and a liquid flow meter is mounted inside one end of conduit 1 and conduit 2 close to the cover.

[0014] Furthermore, the regulating mechanism includes a semicircular pipe, both ends of which are respectively connected to the water pump and the first conduit, and a round cover shell is fixedly installed on the top of the first conduit.

[0015] Furthermore, partitions are arranged at equal intervals inside the semicircular pipe through bearing movement.

[0016] Furthermore, the top of the semicircular pipe is movably connected to a gear corresponding to the number of partitions through a bearing, the interior of the circular cover shell is movably connected to a toothed plate meshing with the gear through a bearing, the circular cover shell is provided with a drive rail fixedly connected to the top of the toothed plate, and an electric push rod 2 is fixedly installed on the top of the circular cover shell, and the electric push rod 2 cooperates with the drive rail through a protrusion fixedly connected at the end.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses variable pressure regulation and dynamic vibration simulation to solve the defect that traditional valve body sealing detection can only be performed under static pressure environment. In terms of variable pressure testing, an electric push rod is used to drive the tooth plate and gear to control the opening and closing angle of the partition in the semicircular pipe, so as to realize continuous and precise adjustment of the water supply flow, thereby simulating the step-type pressure changes and periodic pressure pulsations that the valve body may encounter in actual working conditions. Compared with the traditional fixed pressure detection method, this dynamic variable pressure test can more realistically reflect the sealing performance of the valve body under different pressure gradients, and monitor the inlet and outlet flow difference in real time through the liquid flow meter, accurately quantify the leakage amount, and combine with the pressure change curve analysis to effectively identify the critical point of valve body sealing failure under extreme pressure conditions, significantly improving the reliability and comprehensiveness of the detection results.

[0019] 2. In terms of dynamic vibration simulation, a dual-drive system is used to achieve multi-dimensional vibration of the valve body during the detection process. The motor drives the eccentric block to rotate to generate basic vibration, which is transmitted to the valve body through the top plate to simulate the mechanical vibration during equipment operation. At the same time, the electric push rod controls the relative displacement of the opposite base through the linkage arm and the connecting rod mechanism. The drive roller slides between the inclined wall and the transverse wall in the limit frame groove, dynamically adjusting the preload force of the compression spring to achieve continuous adjustment of the vibration amplitude. This composite vibration simulation system can truly reproduce the complex working conditions of the valve body in the pipeline system under the coupling of fluid impact and mechanical vibration, and effectively detect the fatigue life and sealing stability of the sealing ring under alternating stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the eccentric block structure in the present invention;

[0023] Figure 3 Schematic diagram of the linkage arm structure in the present invention;

[0024] Figure 4 Schematic diagram of the driving roller structure of the present invention;

[0025] Figure 5 Schematic diagram of the limiting frame structure in the present invention;

[0026] Figure 6 Schematic diagram of the circular cover structure in the present invention;

[0027] Figure 7 Schematic diagram of the tooth plate structure in the present invention;

[0028] Figure 8 Schematic diagram of the partition structure in the present invention.

[0029] Figure markings: 1. test frame; 201. top support frame 1; 202. top support frame 2; 301. main positioning cylinder; 302. auxiliary positioning cylinder; 303. main slide bar; 4. opposite base; 5. I-type track; 601. top plate; 602. limit frame; 603. frame groove; 7. bearing platform; 8. driving roller; 9. gear plate; 10. gear; 11. linkage arm; 12. connecting rod; 13. electric push rod 1; 14. eccentric block; 15. motor 1; 16. arc clamp; 171. conduit 1; 172. conduit 2; 173. cover; 18. semicircular pipe; 19. round cover; 20. partition. DETAILED DESCRIPTION

[0030] 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 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 making creative efforts are within the scope of protection of the present invention.

[0031] Example 1: Figures 1-8 As shown, a variable pressure test platform based on valve body sealing detection includes a test frame 1, on the top of which a top support frame 1 201 and a top support frame 202 are fixedly installed, a bearing platform 7 is installed on the top of the test frame 1 and between the top support frame 1 201 and the top support frame 202, and a dynamic bearing frame is provided on the top of the bearing platform 7;

[0032] The dynamic bearing frame is composed of a top plate 601 and two limit frames 602. The two limit frames 602 are symmetrically fixed on both sides of the bottom of the top plate 601. An arc-shaped clamp 16 for fixing the valve body is installed on the top of the top plate 601. The inner side of the clamping surface of the arc-shaped clamp 16 is designed with anti-slip grooves to enhance the clamping stability through friction to prevent the valve body from sliding during vibration or pressure testing. The base of the arc-shaped clamp 16 and the top plate 601 are rigidly connected by high-strength bolts to ensure that there is no displacement deviation when the clamp and the dynamic bearing frame vibrate synchronously, and support rapid fixation of valve bodies of various sizes. The anti-slip design makes the clamping force evenly distributed to avoid local stress damage to the valve body surface.

[0033] Slide plates 1 and 2 are slidably mounted on the top of top support frame 1 201 and top support frame 2 202, respectively. Bending conduit 171 and conduit 2 172 are mounted on the top of each of the two slides via corresponding fixing clamps. Conduit 171 and conduit 2 172 are connected to a cover 173 near the valve body. One end of conduit 171 is connected to the water pump via an adjusting mechanism.

[0034] The regulating mechanism and the water pump are both installed inside the test frame 1. A water tank is also installed inside the test frame 1. Liquid flow meters are installed inside the ends of conduit 1 171 and conduit 2 172 close to the cover 173. The liquid flow meters directly quantify the sealing performance of the valve body through the cooperation of conduit 2 172. The liquid flow meter in conduit 1 171 indirectly reflects the internal pressure state of the valve body. The liquid flow meter of conduit 1 171 is located upstream of the cover 173 to monitor the water supply flow. The liquid flow meter of conduit 2 172 is located downstream of the cover 173 to detect the drainage flow in real time for leakage analysis.

[0035] The adjustment mechanism includes a semicircular pipe 18, the two ends of which are respectively connected to the water pump and the conduit 171, a circular cover 19 is fixedly installed on the top of the conduit 171, and the interior of the semicircular pipe 18 is provided with partitions 20 at equal intervals through bearings. The top of the semicircular pipe 18 is movably connected to a gear 10 corresponding to the number of partitions 20 through bearings, and the gear 10 is fixedly connected to the partition 20. The interior of the circular cover 19 is movably connected to a toothed plate 9 meshing with the gear 10 through bearings. The circular cover 19 is provided with a drive rail fixedly connected to the top of the toothed plate 9, and a second electric push rod is fixedly installed on the top of the circular cover 19. The second electric push rod cooperates with the drive rail through a protrusion fixedly connected at the end;

[0036] Since the partition 20 may rotate under the continuous impact of the water flow inside the semicircular pipe 18, in order to solve this problem, the second electric push rod cooperates with the drive rail to not only control the rotation angle of the tooth plate 9, but also brake the tooth plate 9.

[0037] Embodiment 2: A frame groove 603 is opened in the middle of the limit frame 602, and the two opposite groove walls in the same frame groove 603 are composed of three horizontal walls and two inclined walls. The frame groove 603 cooperates with the driving roller 8 with an annular groove. As shown in the figure, the side walls of the two limit frames 602 are fixedly connected to the limit sleeve, and the limit rod is fixedly installed on the top of the supporting platform 7 and at a position corresponding to the limit sleeve. The limit rod slides in the limit sleeve, thereby ensuring the stability of the dynamic supporting frame during vibration.

[0038] The supporting platform 7 is slidably connected to two opposing bases 4 via an I-shaped track 5 symmetrically fixed on its top. A connecting block is fixedly connected to the top of the opposing base 4. The main positioning cylinder 301 and the auxiliary positioning cylinder 302 are fixedly connected to the same position on both side walls of the connecting block via supports.

[0039] The main positioning cylinder 301 and the auxiliary positioning cylinder 302 are respectively slidably connected with the main slide bar 303 and the auxiliary slide bar. One end of the main slide bar 303 and the auxiliary slide bar are fixedly connected to the same side wall of the support plate. The other ends of the main slide bar 303 and the auxiliary slide bar are fixedly connected to the inner walls of the main positioning cylinder 301 and the auxiliary positioning cylinder 302 with compression springs. A bracket is installed on the outside of the support plate, and the driving roller 8 is movably connected in the bracket through a bearing.

[0040] The top midpoint of the supporting platform 7 is movably connected to a linkage arm 11 through a bearing, and both ends of the linkage arm 11 are movably connected to a connecting rod 12 through a bearing. The end of the connecting rod 12 away from the linkage arm 11 is rotatably connected to the corresponding opposite base 4. An electric push rod 13 is fixedly installed on the top of the supporting platform 7 and on both sides of the linkage arm 11. The output ends of the two electric push rods 13 are fixedly connected to the side wall of the same opposite base 4.

[0041] The electric push rod 13 pushes one of the opposite bases 4 to move, and drives the other opposite base 4 to move synchronously through the cooperation of the linkage arm 11 and the connecting rod 12.

[0042] A swing mechanism is fixedly installed at the bottom center of the top plate 601, and the swing mechanism includes a frame, an eccentric block 14 and a motor 15. The frame is fixedly installed at the bottom center of the top plate 601, and both sides of the eccentric block 14 are fixedly connected with a rotating shaft, and one end of the rotating shaft is movably connected to the frame through a bearing. The motor 15 is installed on the side wall of the frame, and the output end of the motor 15 is fixedly connected to one of the rotating shafts.

[0043] Since the valve body will vibrate during actual use, in order to improve its effect, the eccentric block 14 is driven to rotate by the motor 15, thereby driving the top plate 601 and the valve body on the top to vibrate as a whole. In order to adjust the vibration effect, the number of eccentric blocks 14 can be appropriately increased or decreased. At the same time, the electric push rod 13 can be driven to drive one of the opposing bases 4 to slide in the I-shaped track 5, and through the mutual cooperation of the linkage arm 11 and the connecting rod 12, the other opposing base 4 is driven to move synchronously and in the opposite direction.

[0044] During the synchronous and reverse movement of the two opposing bases 4, the driving roller 8 always slides in the frame groove 603. It needs to be explained here that the two opposing groove walls in the frame groove 603 in the same limit frame 602 are composed of three horizontal walls and two inclined walls. When the two opposing bases 4 approach each other, the two driving rollers 8 located on the side walls of the same connecting block gradually move away from the main positioning cylinder 301 under the action of the compression spring, thereby increasing the vibration amplitude of the dynamic support frame and the valve body on its top. When the two opposing bases 4 move away from each other, the two driving rollers 8 located on the side walls of the same connecting block gradually move closer to the main positioning cylinder 301 under the action of the compression spring, and squeeze the compression spring, thereby reducing the vibration amplitude of the dynamic support frame and the valve body on its top.

[0045] In combination with Example 1 and Example 2, the working principle of the present invention is as follows:

[0046] 1. Valve body fixing and sealing connection

[0047] The valve body to be tested is placed on the top plate 601 of the dynamic support frame, and its base is clamped by the arc-shaped clamp 16 .

[0048] Adjusting bolt: adapts to different valve body sizes, and the anti-slip texture enhances clamping stability to ensure no displacement during vibration.

[0049] Conduit sealing connection: The water supply end of conduit 171 and the drainage end of conduit 2 172 are connected to the inlet and outlet of the valve body through the sealing cover 173. Sealing measures: The sealing cover 173 has a built-in pressure-resistant rubber sealing ring, and the conduit interface adopts a double locking structure to prevent high-pressure leakage.

[0050] 2. Water supply system startup and initial pressure setting

[0051] Start the water pump, and water flows through the semicircular pipe 18 into the conduit 171 and is injected into the valve body.

[0052] Adjust the angle of the partition 20: The second electric push rod drives the gear plate 9 to deflect along the drive rail, driving the gear 10 to rotate, and synchronously adjusts the opening and closing angle of the partition 20 in the semicircular pipe 18. By adjusting the opening and closing degree of the partition 20 in the semicircular pipe 18, the system pressure is continuously changed, simulating the pressure environment of the valve body under different working conditions;

[0053] The liquid flow meter of conduit 171 monitors the initial water supply flow and stabilizes the flow to the set value and the corresponding initial pressure by adjusting the angle of the partition 20.

[0054] The initial reading of the liquid flow meter of conduit 2 172 is zero, verify that there is no leakage in the valve body. If the initial flow rate is greater than, immediately check for sealing failure.

[0055] 3. Voltage Transformation Test and Dynamic Leakage Monitoring

[0056] Step-by-step stress testing:

[0057] The electric push rod 2 is controlled to gradually close the partition 20. The liquid flow meter of the conduit 1 171 shows a decrease in flow rate. The high pressure state is maintained for minutes. The flow meter of the conduit 2 172 continuously monitors the leakage amount.

[0058] Continuous pressure fluctuation test:

[0059] The 20° angle of the partition is periodically fine-tuned to simulate the pressure pulsation in actual working conditions.

[0060] 4. Mechanical vibration simulation and composite testing

[0061] The motor 15 drives the eccentric block 14 to rotate and generate centrifugal force, which is transmitted to the top plate 601 through the rotating shaft, causing the valve body to vibrate periodically. By adjusting the motor speed, the vibration frequency of the valve body can be further adjusted.

[0062] Dynamic amplitude adjustment:

[0063] The electric push rod 13 pushes the opposite base 4 to slide along the I-shaped track 5, and the linkage arm 11 and the connecting rod 12 realize the synchronous reverse movement of the two bases.

[0064] When the two opposing bases 4 approach each other, the driving roller 8 slides along the inclined wall of the frame groove 603, the stored energy of the compression spring decreases, and the vibration amplitude increases;

[0065] When the two opposing bases 4 move away from each other, the stored energy of the compression spring increases and the vibration amplitude decreases.

[0066] In terms of dynamic vibration simulation, a dual-drive system is used to achieve multi-dimensional vibration of the valve body during the detection process. The motor 15 drives the eccentric block 14 to rotate to generate basic vibration, which is transmitted to the valve body through the top plate 601 to simulate the mechanical vibration during the operation of the equipment; at the same time, the electric push rod 13 controls the relative displacement of the opposite base 4 through the linkage arm 11 and the connecting rod 12 mechanism, and the driving roller 8 slides between the inclined wall and the transverse wall in the frame groove 603 of the limit frame 602, dynamically adjusting the preload force of the compression spring, thereby realizing continuous adjustment of the vibration amplitude. This composite vibration simulation system can truly simulate the complex working conditions of the valve body in the pipeline system under the coupling of fluid impact and mechanical vibration, and effectively detect the fatigue life and sealing stability of the sealing ring under alternating stress.

[0067] In terms of dynamic vibration simulation, a dual-drive system is used to achieve multi-dimensional vibration of the valve body during the detection process. The motor 15 drives the eccentric block 14 to rotate to generate basic vibration, which is transmitted to the valve body through the top plate 601 to simulate the mechanical vibration during the operation of the equipment. At the same time, the electric push rod 13 controls the relative displacement of the opposite base 4 through the linkage arm 11 and the connecting rod 12. The driving roller 8 slides between the inclined wall and the transverse wall in the frame groove 603 of the limit frame 602, dynamically adjusting the preload force of the compression spring, thereby achieving continuous adjustment of the vibration amplitude. This composite vibration simulation system can truly simulate the complex working conditions of the valve body in the pipeline system under the coupling of fluid impact and mechanical vibration, and effectively detect the fatigue life and sealing stability of the sealing ring under alternating stress.

[0068] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A variable pressure test platform based on valve body sealing detection, including a test stand, characterized in that: The top of the test frame is fixedly installed with a top support frame 1 and a top support frame 2, a bearing platform is installed on the top of the test frame and located between the top support frame 1 and the top support frame 2, and a dynamic bearing frame is provided on the top of the bearing platform; The dynamic bearing frame is composed of a top plate and two limit frames. A frame groove is opened in the middle of the limit frame, and the two opposite groove walls in the same frame groove are composed of three transverse walls and two inclined walls. The frame groove cooperates with the driving roller with an annular groove. When the two opposing bases approach each other, the driving roller slides along the inclined wall of the frame groove, the energy storage of the compression spring decreases, and the vibration amplitude increases; when the two opposing bases move away from each other, the energy storage of the compression spring increases, and the vibration amplitude decreases; The bearing platform is slidably connected to two opposing bases through an I-shaped track symmetrically fixed on the top of the bearing platform. The top of the opposing base is fixedly connected to a connecting block. The same position on both side walls of the connecting block is fixedly connected to the main positioning cylinder and the auxiliary positioning cylinder through supports. The main positioning cylinder and the auxiliary positioning cylinder are respectively slidably connected with a main slide rod and an auxiliary slide rod, one end of the main slide rod and the auxiliary slide rod are fixedly connected to the same side wall of the supporting plate, and the other ends of the main slide rod and the auxiliary slide rod are fixedly connected to the inner walls of the main positioning cylinder and the auxiliary positioning cylinder with a compression spring, a bracket is installed on the outer side of the supporting plate, and the driving roller is movably connected to the bracket through a bearing; A swing mechanism is fixedly installed at the bottom center of the top plate, and the swing mechanism includes a frame, an eccentric block and motor 1. The frame is fixedly installed at the bottom center of the top plate, and both sides of the eccentric block are fixedly connected with a rotating shaft, and one end of the rotating shaft is movably connected to the frame through a bearing. Motor 1 is installed on the side wall of the frame, and the output end of motor 1 is fixedly connected to one of the rotating shafts.

2. The variable pressure test platform based on valve body sealing detection according to claim 1 is characterized in that: The top midpoint of the supporting platform is movably connected to a linkage arm via a bearing, and both ends of the linkage arm are movably connected to connecting rods via bearings. One end of the connecting rod away from the linkage arm is rotatably connected to a corresponding opposite base.

3. The variable pressure test platform based on valve body sealing detection according to claim 2 is characterized in that: An electric push rod 1 is fixedly installed on the top of the supporting platform and on both sides of the linkage arm, and the output ends of the two electric push rods 1 are fixedly connected to the same opposite side wall of the base.

4. The variable pressure test platform based on valve body sealing detection according to claim 1 is characterized in that: The two limit frames are symmetrically fixedly installed on both sides of the bottom of the top plate, and an arc-shaped clamp for fixing the valve body is installed on the top of the top plate.

5. The variable pressure test platform based on valve body sealing detection according to claim 1 is characterized in that: Slide plate 1 and slide plate 2 are respectively slidably installed on the top of the top support frame 1 and the top of the top support frame 2. Conduit 1 and conduit 2 with bending function are respectively installed on the top of the slide plate 1 and the top of the slide plate 2 through corresponding fixed clamps. The positions of conduit 1 and conduit 2 placed near the valve body are connected with a cover.

6. The variable pressure test platform based on valve body sealing detection according to claim 5 is characterized in that: One end of the conduit 1 is connected to the water pump through an adjusting mechanism. The adjusting mechanism and the water pump are both installed inside the test frame. A water tank is also installed inside the test frame. Liquid flow meters are installed inside the ends of the conduit 1 and conduit 2 close to the cover.

7. The variable pressure test platform based on valve body sealing detection according to claim 6 is characterized in that: The regulating mechanism comprises a semicircular pipe, the two ends of which are respectively connected to the water pump and the first conduit, and a round cover shell is fixedly installed on the top of the first conduit.

8. The variable pressure test platform based on valve body sealing detection according to claim 7 is characterized in that: Partitions are arranged at equal intervals inside the semicircular pipe through bearing movement.

9. The variable pressure test platform based on valve body sealing detection according to claim 8 is characterized in that: The top of the semicircular pipe is movably connected to gears corresponding to the number of partitions through bearings, and the inside of the circular cover is movably connected to toothed plates meshing with the gears through bearings.

10. The variable pressure test platform based on valve body sealing detection according to claim 9 is characterized in that: The circular cover is provided with a driving rail fixedly connected to the top of the gear plate. The top of the circular cover is fixedly installed with a second electric push rod, which cooperates with the driving rail through a protrusion fixedly connected at the end.

Images