Chemical valve inner leakage detection device

Abstract

The invention discloses a chemical valve inner leakage detection device which comprises a base, and fixed detection pipes are symmetrically arranged at the tops of the two sides of the base. When the arranged manual adjusting mechanism drives the movable detection pipes on the two sides to be far away from each other, the movable detection pipes drive the conical pipe to move out of the valve connecting pipe, then the valve body can be disassembled, and when the valve body to be detected needs to be installed, the valve body is moved to the position between the movable detection pipes, so that the detection efficiency is improved. The manual adjusting mechanism drives the movable detection pipes on the two sides to get close to each other, the movable detection pipes drive the conical pipe to be inserted into the valve connecting pipe, when the conical pipe tightly abuts against the valve connecting pipe, connection between the conical pipe and the valve connecting pipe is sealed through the rubber sleeve, and installation of the valve to be detected can be completed. The internal leakage of the valve is detected through the existing detection technology, the valve to be detected can be quickly assembled through the detection device, and the working efficiency of the detection device is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of valve internal leakage detection, in particular to a valve internal leakage detection device for chemical industry. Background Art

[0002] The flow control means of existing pipelines is often controlled by valves. When there is internal leakage in chemical valves, serious consequences will occur. Therefore, it is necessary to use a valve internal leakage detection device to detect the valve internal leakage.

[0003] Current chemical valve internal leakage detection devices, such as the one proposed in publication number: CN115235705B, include a detection tube, a tube sealing plate arranged in the middle of the detection tube to form a closed pipeline between the detection tube and the valve; a pressure measuring mechanism, including a first airbag assembly arranged at the top of the pipeline sealing mechanism and capable of contacting the air in the closed pipeline, and a second airbag assembly arranged above the first airbag assembly and in contact with the external air environment, the air in the first airbag assembly and the second airbag assembly can circulate with each other; a synchronization assembly, fixedly arranged between the valve and the detection tube to enable the valve and the tube sealing plate to open and close at the same time. In the present invention, the occurrence of internal leakage is judged by the change of the pressure in the tube, and the detection result is clear and unambiguous, and there will be no missed detection or detection error, and the present invention can intercept the leaked fluid during the detection process to effectively prevent the subsequent impact caused by the leakage of the fluid in the tube.

[0004] Although the existing valve internal leakage detection device can detect the internal leakage of the valve when in use, the valve needs to be connected to the detection tube when the valve to be detected is assembled. The existing fixed connection method is bolt connection, which makes the assembly of the valve to be detected time-consuming and labor-intensive, making the valve internal leakage detection device have low working efficiency and inconvenient to use. Therefore, we propose a valve internal leakage detection device for chemical industry to solve the problem raised. Summary of the invention

[0005] The purpose of the present invention is to provide a chemical valve internal leakage detection device, which can quickly complete the assembly of the valve to be detected through the detection device, thereby effectively improving the working efficiency of the detection device.

[0006] To achieve the above object, the present invention provides the following technical solution: a chemical valve internal leakage detection device, comprising a base, fixed detection tubes are symmetrically arranged on the top of both sides of the base, and a first limiting ring is sleeved on the fixed detection tube, wherein: The first limiting ring is fixedly connected to the base, the first limiting plates are symmetrically fixedly connected to both sides of the fixed detection tube near the first limiting ring, the fixed detection tube is connected to a bellows telescopic tube on one side near the middle of the base, the bellows telescopic tube is connected to a movable detection tube at one end away from the fixed detection tube, the movable detection tube is integrally fixedly connected to a conical tube at one end away from the bellows telescopic tube, the outer side of the conical tube is covered with a rubber sleeve, and the outer side of the movable detection tube is covered with a second limiting ring; The movable detection tube is symmetrically fixedly connected with the second limit plate on both sides close to the second limit ring. A valve body is arranged in the middle of the top of the base. Valve connecting tubes are symmetrically fixedly connected with the two ends of the valve body. The spacing between the movable detection tubes on both sides of the base is adjusted by a manual adjustment mechanism, and the fixed detection tube controls the opening or closing of its channel by an automatic opening and closing mechanism.

[0007] Preferably, the minimum outer diameter of the tapered tube is smaller than the inner diameter of the valve connecting tube, and the maximum outer diameter of the tapered tube is larger than the inner diameter of the valve connecting tube.

[0008] Preferably, the manual adjustment mechanism includes a slide groove, a slide groove is opened on the top of the base corresponding to the movable detection tube, a slider is arranged in the slide groove, a sliding seat is fixedly connected to the top of the slider, the sliding seat and the second limiting ring are fixedly connected through a transmission rod, a turntable is rotatably connected to the middle of the top of the base, a transmission groove is penetrated through the position of the turntable corresponding to the transmission rod, the transmission rod penetrates the inside of the transmission groove, a worm gear is fixedly connected to the shaft end of the turntable near the bottom of the base, a worm gear is rotatably connected to the bottom of the base near one side of the worm gear, and a handle is fixedly connected to one end of the worm gear.

[0009] Preferably, the slide groove is arranged parallel to the long side of the base, and the slide groove and the slider are both T-shaped, and the outer dimension of the slider is consistent with the inner dimension of the slide groove.

[0010] Preferably, the transmission groove is arc-shaped, and the inner width of the transmission groove matches the outer diameter of the transmission rod.

[0011] Preferably, the tooth pitches of the worm wheel and the worm are equal, and the worm wheel and the worm are meshed.

[0012] Preferably, the automatic opening and closing mechanism includes a first bracket, the interior of the fixed detection tube is fixedly connected to the first bracket, a flow groove passes through the middle of the first bracket, the interior of the movable detection tube is fixedly connected to a second bracket, and the second bracket is fixedly connected to a sealing head at one end corresponding to the flow groove.

[0013] Preferably, the outer dimension of the second bracket is smaller than the inner dimension of the movable detection tube.

[0014] Preferably, the sealing head is made of rubber material and is in a truncated cone shape, and the outer dimensions of the sealing head are consistent with the inner dimensions of the circulation groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adjust the distance between the movable detection tubes on both sides by means of the manual adjustment mechanism. When the movable detection tubes on both sides are away from each other, the movable detection tube drives the conical tube to move out of the interior of the valve connecting tube, and the valve body can be disassembled. When the valve body to be detected needs to be installed, the valve body is moved between the movable detection tubes, and the movable detection tubes on both sides are driven to approach each other by the manual adjustment mechanism, so that the movable detection tube drives the conical tube to be inserted into the interior of the valve connecting tube. When the conical tube is tightly against the valve connecting tube, the connection between the conical tube and the valve connecting tube is sealed by the rubber sleeve, and the installation of the valve to be detected is completed. Afterwards, the internal leakage of the valve is detected by the existing detection technology. Through the detection device, the valve to be detected can be quickly assembled, and the working efficiency of the detection device is effectively improved.

[0016] According to the present invention, when the handle drives the worm to rotate, the worm drives the worm wheel to rotate through meshing, so that the worm wheel drives the turntable to rotate. When the turntable rotates, the arc-shaped transmission groove drives the transmission rods on both sides to move closer to or away from each other, and then the transmission rod drives the second limit ring and the movable detection tube to move synchronously. When moving, the sliding groove and the slider are used for guidance to avoid deviation of the movement of the movable detection tube, and then the manual adjustment mechanism is used to control the movable detection tubes on both sides to move away from or close to each other.

[0017] According to the present invention, when the movable detection tubes are close to each other and sealedly connected with the valve to be detected, the movable detection tube drives the sealing head away from the first bracket through the second bracket, so that the flow slot is in an open state, allowing the detection gas or liquid to enter the interior of the valve body through the flow slot; after the detection is completed, when the movable detection tubes are moved away from each other, the movable detection tube drives the sealing head to block the flow slot, and the fixed detection tube can be automatically closed; through the control of the automatic opening and closing mechanism, the opening or closing of the fixed detection tube channel can be automatically controlled according to the disassembly and assembly state of the valve to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the test of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the movable detection tube of the present invention; Figure 4 This is a schematic diagram of the structure of the automatic opening and closing mechanism of the present invention; Figure 5 For the present invention Figure 1A schematic diagram of the partially enlarged structure at center A; Figure 6 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0019] In the figure: 1. base; 2. fixed detection tube; 3. first limit ring; 4. first limit plate; 5. corrugated expansion tube; 6. movable detection tube; 7. conical tube; 8. rubber sleeve; 9. second limit ring; 10. second limit plate; 11. valve body; 12. valve connecting tube; 13. slide groove; 14. slider; 15. sliding seat; 16. transmission rod; 17. turntable; 18. transmission groove; 19. worm gear; 20. worm; 21. handle; 22. first bracket; 23. circulation groove; 24. second bracket; 25. sealing head. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] See also Figures 1 to 6 The present invention provides a technical solution: a device for detecting internal leakage of a valve for chemical industry, comprising a base 1, fixed detection tubes 2 are symmetrically arranged on the top of both sides of the base 1, and a first limiting ring 3 is sleeved on the fixed detection tube 2, wherein: The first limiting ring 3 is fixedly connected to the base 1, and the first limiting plates 4 are symmetrically fixedly connected to the two sides of the fixed detection tube 2 near the first limiting ring 3, and the fixed detection tube 2 is connected to a corrugated telescopic tube 5 on one side near the middle of the base 1, and the end of the corrugated telescopic tube 5 away from the fixed detection tube 2 is connected to a movable detection tube 6, and the end of the movable detection tube 6 away from the corrugated telescopic tube 5 is integrally fixedly connected with a conical tube 7, and the outer side of the conical tube 7 is covered with a rubber sleeve 8, and the outer side of the movable detection tube 6 is covered with a second limiting ring 9; The movable detection tube 6 is symmetrically fixedly connected with the second limit plate 10 on both sides close to the second limit ring 9, and a valve body 11 is arranged in the middle of the top of the base 1. The valve connecting tubes 12 are symmetrically fixedly connected at both ends of the valve body 11. The movable detection tubes 6 on both sides of the base 1 are adjusted in spacing by a manual adjustment mechanism, and the fixed detection tube 2 is controlled to open or close its channel by an automatic opening and closing mechanism; The manual adjustment mechanism provided can adjust the distance between the movable detection tubes 6 on both sides. When the movable detection tubes 6 on both sides are away from each other, the movable detection tube 6 drives the conical tube 7 to move out of the interior of the valve connecting tube 12, and the valve body 11 can be disassembled. When the valve body 11 to be detected needs to be installed, the valve body 11 is moved between the movable detection tubes 6, and the movable detection tubes 6 on both sides are driven close to each other by the manual adjustment mechanism, so that the movable detection tube 6 drives the conical tube 7 to insert into the interior of the valve connecting tube 12. When the conical tube 7 is tightly against the valve connecting tube 12, the connection between the conical tube 7 and the valve connecting tube 12 is sealed by the rubber sleeve 8, and the installation of the valve to be detected is completed. After that, the internal leakage of the valve is detected by the existing detection technology. Through the detection device, the valve to be detected can be quickly assembled, and the working efficiency of the detection device is effectively improved.

[0022] See also Figures 1 to 6 The minimum outer diameter of the tapered tube 7 is smaller than the inner diameter of the valve connecting tube 12, and the maximum outer diameter of the tapered tube 7 is larger than the inner diameter of the valve connecting tube 12. The manual adjustment mechanism includes a slide groove 13. The base 1 is provided with a slide groove 13 at the top corresponding to the movable detection tube 6. A slider 14 is arranged in the slide groove 13. A sliding seat 15 is fixedly connected to the top of the slider 14. The sliding seat 15 is fixedly connected to the second limiting ring 9 through a transmission rod 16. A turntable 17 is rotatably connected to the middle of the top of the base 1. A transmission groove 18 is penetrated through the position of the turntable 17 corresponding to the transmission rod 16. The transmission rod 16 penetrates the inside of the transmission groove 18. The shaft end of the turntable 17 close to the bottom of the base 1 is fixedly connected to a worm gear 19. A worm 20 is rotatably connected to the bottom of the seat 1 near the worm wheel 19, and a handle 21 is fixedly connected to one end of the worm 20. When the worm 20 is driven to rotate by the handle 21, the worm 20 drives the worm wheel 19 to rotate through meshing, so that the worm wheel 19 drives the turntable 17 to rotate. When the turntable 17 rotates, the transmission rods 16 on both sides are driven to approach or move away from each other through the arc-shaped transmission groove 18, and then the second limit ring 9 and the movable detection tube 6 are driven to move synchronously through the transmission rod 16, and when moving, they are guided by the slide groove 13 and the slider 14 to avoid the movement of the movable detection tube 6. The movable detection tube 6 is then controlled to move away from or approach each other through a manual adjustment mechanism.

[0023] See also Figures 1 to 6 The slide groove 13 is arranged parallel to the long side of the base 1, and the slide groove 13 and the slider 14 are both T-shaped, and the outer dimension of the slider 14 coincides with the inner dimension of the slide groove 13, the transmission groove 18 is arc-shaped, and the inner width of the transmission groove 18 coincides with the outer diameter of the transmission rod 16, the tooth pitch of the worm wheel 19 is equal to that of the worm 20, and the worm wheel 19 is meshed with the worm 20.

[0024] See also Figures 1 to 6The automatic opening and closing mechanism includes a first bracket 22, the interior of the fixed detection tube 2 is fixedly connected with the first bracket 22, the middle of the first bracket 22 is penetrated with a flow groove 23, the interior of the movable detection tube 6 is fixedly connected with a second bracket 24, the second bracket 24 is fixedly connected with a sealing head 25 at one end corresponding to the flow groove 23, the outer dimension of the second bracket 24 is smaller than the inner dimension of the movable detection tube 6, the sealing head 25 is made of rubber material, and the sealing head 25 is truncated, and the outer dimension of the sealing head 25 is consistent with the inner dimension of the flow groove 23, when the movable detection tubes 6 are close to each other, the movable detection tubes 6 are closed. When the movable detection tube 6 is sealed and connected to the valve to be detected, the movable detection tube 6 drives the sealing head 25 away from the first bracket 22 through the second bracket 24, so that the flow groove 23 is in an open state, so that the detection gas or liquid can enter the interior of the valve body 11 through the flow groove 23. After the detection is completed, when the movable detection tubes 6 are moved away from each other, the movable detection tube 6 drives the sealing head 25 to block the flow groove 23, and the fixed detection tube 2 can be automatically closed. Through the control of the automatic opening and closing mechanism, the opening or closing of the channel of the fixed detection tube 2 can be automatically controlled according to the disassembly and assembly state of the valve to be detected.

[0025] Working principle: The device for detecting internal leakage of chemical valves can adjust the distance between the movable detection tubes 6 on both sides through the manual adjustment mechanism. When the movable detection tubes 6 on both sides are away from each other, the movable detection tube 6 drives the conical tube 7 to move out of the valve connecting tube 12, and the valve body 11 can be disassembled. When the valve body 11 to be detected needs to be installed, the valve body 11 is moved between the movable detection tubes 6, and the movable detection tubes 6 on both sides are driven to approach each other through the manual adjustment mechanism, so that the movable detection tube 6 drives the conical tube 7 to insert into the valve connecting tube 12. When the conical tube 7 is tightly against the valve connecting tube 12, the connection between the conical tube 7 and the valve connecting tube 12 is sealed by the rubber sleeve 8, and the installation of the valve to be detected is completed. After that, the valve internal leakage is detected by the existing detection technology. Through the detection device, the valve to be detected can be quickly assembled, which effectively improves the working efficiency of the detection device. When the worm 20 is driven to rotate by the handle 21, the worm 20 drives the worm wheel 19 to rotate through meshing, so that the worm wheel 19 drives the worm wheel 19 to rotate. The movable turntable 17 rotates. When the turntable 17 rotates, the transmission rods 16 on both sides are driven to approach or move away from each other through the arc-shaped transmission groove 18, and then the second limit ring 9 and the movable detection tube 6 are driven to move synchronously through the transmission rod 16, and when moving, the slide groove 13 and the slider 14 are used for guidance to avoid the movement of the movable detection tube 6 from being offset, and then the manual adjustment mechanism is used to control the movable detection tubes 6 on both sides to move away from or approach each other, and the movable detection tubes 6 are close to each other. When the movable detection tube 6 is sealed and connected to the valve to be detected, the movable detection tube 6 drives the sealing head 25 away from the first bracket 22 through the second bracket 24, so that the flow groove 23 is in an open state, so that the detection gas or liquid can enter the interior of the valve body 11 through the flow groove 23. After the detection is completed, when the movable detection tubes 6 are moved away from each other, the movable detection tube 6 drives the sealing head 25 to block the flow groove 23, and the fixed detection tube 2 can be automatically closed. Through the control of the automatic opening and closing mechanism, the opening or closing of the channel of the fixed detection tube 2 can be automatically controlled according to the disassembly and assembly state of the valve to be detected.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting internal leakage of a valve for a chemical industry, comprising a base (1), a fixed detection tube (2), a first limiting ring (3), a first limiting plate (4), a bellows expansion tube (5), a movable detection tube (6), a tapered tube (7), a rubber sleeve (8), a second limiting ring (9), a second limiting plate (10), a valve body (11), a valve connecting tube (12), a slide groove (13), a slider (14), a sliding seat (15), a transmission rod (16), a rotating disk (17), a transmission groove (18), a worm wheel (19), a worm (20), a handle (21), a first bracket (22), a flow groove (23), a second bracket (24), and a sealing head (25), characterized in that: Fixed detection tubes (2) are symmetrically arranged on the tops of both sides of the base (1), and a first limiting ring (3) is sleeved on the fixed detection tube (2), wherein: The first limiting ring (3) is fixedly connected to the base (1); the first limiting plates (4) are symmetrically fixedly connected to the two sides of the fixed detection tube (2) close to the first limiting ring (3); the fixed detection tube (2) is connected to a corrugated telescopic tube (5) on one side close to the middle of the base (1); the end of the corrugated telescopic tube (5) away from the fixed detection tube (2) is connected to a movable detection tube (6); the end of the movable detection tube (6) away from the corrugated telescopic tube (5) is integrally fixedly connected to a conical tube (7); the outer side of the conical tube (7) is covered with a rubber sleeve (8); the outer side of the movable detection tube (6) is covered with a second limiting ring (9); The movable detection tube (6) is symmetrically fixedly connected to the second limit plate (10) on both sides close to the second limit ring (9), a valve body (11) is arranged in the middle of the top of the base (1), and valve connecting tubes (12) are symmetrically fixedly connected to the two ends of the valve body (11), the movable detection tubes (6) on both sides of the base (1) are adjusted in distance by a manual adjustment mechanism, and the fixed detection tube (2) is controlled to open or close its channel by an automatic opening and closing mechanism.

2. The chemical valve internal leakage detection device according to claim 1 is characterized in that: The minimum outer diameter of the tapered tube (7) is smaller than the inner diameter of the valve connecting tube (12), and the maximum outer diameter of the tapered tube (7) is larger than the inner diameter of the valve connecting tube (12).

3. The internal leakage detection device for chemical valves according to claim 1 is characterized in that: The manual adjustment mechanism comprises a slide groove (13), the base (1) is provided with a slide groove (13) at the top corresponding to the movable detection tube (6), a slider (14) is arranged in the slide groove (13), a slide seat (15) is fixedly connected to the top of the slider (14), the slide seat (15) and the second limiting ring (9) are fixedly connected via a transmission rod (16), a turntable (17) is rotatably connected to the middle of the top of the base (1), a transmission groove (18) is penetrated through the turntable (17) at a position corresponding to the transmission rod (16), the transmission rod (16) penetrates the inside of the transmission groove (18), a worm wheel (19) is fixedly connected to the shaft end of the turntable (17) near the bottom of the base (1), a worm (20) is rotatably connected to the bottom of the base (1) near the worm wheel (19), and a handle (21) is fixedly connected to one end of the worm (20).

4. The chemical valve internal leakage detection device according to claim 3 is characterized in that: The slide groove (13) is arranged parallel to the long side of the base (1), and the slide groove (13) and the slider (14) are both T-shaped, and the outer dimension of the slider (14) matches the inner dimension of the slide groove (13).

5. The internal leakage detection device for chemical valves according to claim 3 is characterized in that: The transmission groove (18) is arc-shaped, and the inner width of the transmission groove (18) matches the outer diameter of the transmission rod (16).

6. The internal leakage detection device for chemical valves according to claim 3 is characterized in that: The tooth pitches of the worm wheel (19) and the worm (20) are equal, and the worm wheel (19) and the worm (20) are meshed.

7. The chemical valve internal leakage detection device according to claim 1 is characterized in that: The automatic opening and closing mechanism comprises a first bracket (22), the interior of the fixed detection tube (2) is fixedly connected to the first bracket (22), a flow groove (23) passes through the middle of the first bracket (22), the interior of the movable detection tube (6) is fixedly connected to a second bracket (24), and one end of the second bracket (24) corresponding to the flow groove (23) is fixedly connected to a sealing head (25).

8. The internal leakage detection device for chemical valves according to claim 7, characterized in that: The outer dimensions of the second bracket (24) are smaller than the inner dimensions of the movable detection tube (6).

9. The internal leakage detection device for chemical valves according to claim 7, characterized in that: The sealing head (25) is made of a rubber material and is in a truncated cone shape, and the outer dimensions of the sealing head (25) coincide with the inner dimensions of the flow groove (23).

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