Online detection device for atmospheric storage tank breather valve

Abstract

The application discloses a kind of atmospheric storage tank breather valve on-line detection device, it is related to storage tank breather valve detection technical field.The atmospheric storage tank breather valve on-line detection device, including detection pipe, the detection pipe outer wall is fixedly connected with measuring tube, the measuring tube inside is provided with measurement component, the measuring tube outer wall is fixedly connected with positive pressure component, the measuring tube outer wall is fixedly connected with negative pressure component, the positive pressure component outer wall is fixedly connected with gas supply component.The atmospheric storage tank breather valve on-line detection device, when encountering no power supply, continuously pull back and forth positive pressure handle, so that gas enters the inside of measuring tube to let the internal pressure of storage tank increase, when negative pressure detection, continuously pull back and forth negative pressure handle, let the internal pressure of measuring tube be low, and observe the scale indicated on pressure scale board by measurement pointer, whether the work of breather valve can be detected to be abnormal, so as to issue problem in time.

Description

Technical Field

[0001] This invention relates to the field of breather valve detection technology for storage tanks, specifically to an online detection device for breather valves of atmospheric pressure storage tanks. Background Technology

[0002] A breather valve is a critical safety device, primarily installed on storage tanks or containers, that automatically senses changes in internal pressure. When the internal pressure is too high, the breather valve opens to release gas, preventing damage from overpressure; when the pressure is too low, it draws in external gas, thus maintaining pressure balance within the container. Patent application number CN202323035923.4 discloses an online calibration device for a breathing valve, including a gas source module, which includes a pressure tank and a regulator. The regulator controls the opening and closing of the pressure tank and controls the pressure of the exported gas. The gas pressure mode adjustment module includes a flow guide valve, a vacuum generator, and a buffer box. One end of the flow guide valve is connected to the gas source module, and the other end is connected to the vacuum generator or the buffer box. The buffer box includes a display and is connected to the breathing valve sealing cover. The breathing valve sealing cover is used to cover and seal the breathing port of the breathing valve. Existing detection equipment mostly relies on electrically driven sensors to monitor breather valves. In emergencies, if a natural disaster causes a power outage, chemical facilities and breather valves may be damaged. At this time, the detection equipment cannot work, and it is impossible to confirm whether the breather valve can regulate pressure and ventilate normally, resulting in the inability to take timely emergency measures, which affects the substances stored in the storage tank. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an online detection device for the breather valve of an atmospheric pressure storage tank, thereby solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an online detection device for the breather valve of an atmospheric pressure storage tank, comprising a detection tube, a measuring tube fixedly connected to the outer wall of the detection tube, a measuring component disposed inside the measuring tube, a positive pressure component fixedly connected to the outer wall of the measuring tube, a negative pressure component fixedly connected to the outer wall of the measuring tube, and a gas supply component fixedly connected to the outer wall of the positive pressure component. The measurement component includes: A measuring piston, which is movably connected inside the measuring tube; A measuring spring, which is fixedly connected to the front of the measuring piston; A measuring rod, which is movably connected to the front of the measuring piston.

[0005] Preferably, a pressure scale plate is fixedly connected to the outer wall of the measuring tube at the bottom of the measuring rod, a measuring pointer is fixedly connected to the bottom of the measuring rod at the top of the pressure scale plate, and a pressure scale is provided on the top of the pressure scale plate.

[0006] Preferably, the positive pressure assembly includes a positive pressure tube, which is fixedly connected to the outer wall of the measuring tube located on the back of the measuring piston. A positive pressure piston is movably connected inside the positive pressure tube. A positive pressure lever is movably connected to the right side of the positive pressure piston. A positive pressure handle is fixedly connected to the right side of the positive pressure lever.

[0007] Preferably, a one-way valve is fixedly connected inside the positive pressure tube to the left side of the positive pressure piston, a positive pressure movable plug is movably connected inside the positive pressure piston, and a through hole is provided on the positive pressure piston at the position corresponding to the positive pressure movable plug.

[0008] Preferably, the negative pressure assembly includes a negative pressure tube, which is fixedly connected to the outer wall of the measuring tube located on the back of the measuring piston. A negative pressure piston is movably connected inside the negative pressure tube. A negative pressure pull rod is fixedly connected to the left side of the negative pressure piston. A negative pressure handle is fixedly connected to the left side of the negative pressure pull rod. A negative pressure movable plug is movably connected to the outer wall of the negative pressure pull rod. A negative pressure spring is fixedly connected to the left side of the negative pressure movable plug, and the negative pressure spring is fixedly connected to the negative pressure pull rod. A through hole is provided on the negative pressure piston at the position corresponding to the negative pressure movable plug.

[0009] Preferably, a gas-blocking ring is fixedly connected inside the negative pressure pipe, and a gas-blocking plate is movably connected to the left side of the gas-blocking ring.

[0010] Preferably, the bottom of the negative pressure pipe is fixedly connected to an air-blocking box on the left side of the negative pressure piston, a sealing sheet is movably connected inside the air-blocking box, and a pull-out block is fixedly connected to the outer wall of the air-blocking box.

[0011] Preferably, the gas supply assembly includes a gas supply box, an air inlet is provided on the left side of the gas supply box, a sealing cover is provided on the outer wall of the air inlet for sealing, a positive pressure connecting pipe is fixedly connected to the left side of the gas supply box, a negative pressure connecting pipe is fixedly connected to the left side of the gas supply box, a guide rod is fixedly connected inside the gas supply box, a movable plate is movably connected to the outer wall of the guide rod, a gas supply pull rod is fixedly connected to the right side of the movable plate, and a gas supply handle is fixedly connected to the right side of the gas supply pull rod.

[0012] Preferably, the positive pressure connecting pipe is fixedly connected to the bottom of the positive pressure pipe located on the right side of the positive pressure piston, and the negative pressure connecting pipe is fixedly connected to the bottom of the air-blocking box.

[0013] This invention provides an online detection device for the breather valve of an atmospheric pressure storage tank. It has the following beneficial effects: 1. This online detection device for the breather valve of the atmospheric pressure storage tank, when encountering a power outage, continuously pulls the positive pressure handle back and forth to allow gas to enter the measuring tube and increase the internal pressure of the storage tank. When performing negative pressure detection, it continuously pulls the negative pressure handle back and forth to lower the internal pressure of the measuring tube and observes the scale indicated by the measuring pointer on the pressure scale plate. This can detect whether the breather valve is malfunctioning, so as to promptly identify problems and protect the substances stored in the storage tank.

[0014] 2. The online detection device for the breather valve of this atmospheric pressure storage tank, when performing positive pressure detection, will cause the positive pressure piston to push the gas inside the gas supply box into the measuring tube to increase the internal gas pressure, thus preventing outside air from mixing into the detection tube. When performing negative pressure detection, it will allow the gas inside the measuring tube to enter the gas supply box, preventing the internal gas from being discharged into the outside air. This avoids the exchange of air between the inside of the storage tank and the outside air during detection, thus preventing the contamination of the gas inside the tank and protecting the contents of the tank.

[0015] 3. The online detection device for the breather valve of the atmospheric pressure storage tank first performs positive pressure detection through the positive pressure component. If the positive pressure operation of the breather valve is abnormal, the gas inside the storage tank can be sent into the gas supply box through the negative pressure connecting pipe via the negative pressure component for storage, so as to avoid excessive gas pressure inside the storage tank, which may affect the substances stored inside the storage tank. Attached Figure Description

[0016] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the present invention; Figure 3 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the measuring tube of the present invention; Figure 5 for Figure 4 Enlarged structural diagram of section C; Figure 6 for Figure 4 Enlarged structural diagram of section D in the middle; Figure 7 This is a schematic diagram of the positive pressure piston structure of the present invention; Figure 8 for Figure 1 Enlarged structural diagram of section B in the middle; Figure 9 for Figure 4 Enlarged structural diagram of section E in the middle; Figure 10 This is a schematic diagram of the negative pressure piston structure of the present invention; Figure 11 This is a schematic cross-sectional view of the gas barrier box of the present invention; Figure 12 This is a cross-sectional view of the air supply box of the present invention.

[0017] In the diagram: 1. Detection tube; 2. Measuring tube; 3. Measuring assembly; 301. Measuring piston; 302. Measuring spring; 303. Measuring rod; 304. Measuring pointer; 305. Pressure scale plate; 4. Positive pressure assembly; 401. Positive pressure tube; 402. One-way valve; 403. Positive pressure piston; 404. Positive pressure pull rod; 405. Positive pressure handle; 406. Positive pressure movable plug; 5. Negative pressure assembly; 501. Negative pressure tube; 502. Air-blocking ring; 50 3. Air baffle; 504. Negative pressure piston; 505. Negative pressure pull rod; 506. Negative pressure handle; 507. Negative pressure movable plug; 508. Negative pressure spring; 509. Air baffle box; 510. Sealing plate; 511. Pull-out block; 6. Air supply assembly; 601. Air supply box; 602. Air inlet; 603. Positive pressure connecting pipe; 604. Negative pressure connecting pipe; 605. Movable plate; 606. Guide rod; 607. Air supply pull rod; 608. Air supply handle. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0020] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: an online detection device for the breathing valve of an atmospheric pressure storage tank, including a detection tube 1, a measuring tube 2 fixedly connected to the outer wall of the detection tube 1, a measuring component 3 disposed inside the measuring tube 2, a positive pressure component 4 fixedly connected to the outer wall of the measuring tube 2, a negative pressure component 5 fixedly connected to the outer wall of the measuring tube 2, and a gas supply component 6 fixedly connected to the outer wall of the positive pressure component 4. Measurement component 3 includes: Measuring piston 301 is movably connected inside measuring tube 2; Measuring spring 302 is fixedly connected to the front of measuring piston 301; Measuring rod 303 is movably connected to the front of measuring piston 301.

[0021] The detection tube 1 is fixedly connected to the bottom of the breather valve and to the storage tank. The detection tube 1 is connected between the breather valve and the storage tank, and the inside of the storage tank detection tube 1 and the measuring tube 2 are connected to the inside of the storage tank and the breather valve. When the air pressure inside the storage tank increases or decreases, the air pressure inside the measuring tube 2 will also increase or decrease accordingly. The change in internal air pressure causes a change in the difference between internal and external atmospheric pressure, which causes the measuring piston 301 to move inside the measuring tube 2 against the force of the measuring spring 302.

[0022] A pressure scale plate 305 is fixedly connected to the outer wall of the measuring tube 2 at the bottom of the measuring rod 303. A measuring pointer 304 is fixedly connected to the bottom of the measuring rod 303 at the top of the pressure scale plate 305. A pressure scale is provided on the top of the pressure scale plate 305.

[0023] Changes in the internal air pressure of the storage tank cause a change in the pressure difference between the tank and the external atmospheric pressure. This causes the measuring piston 301 to move inside the measuring tube 2 against the action of the measuring spring 302. When the measuring piston 301 moves, it causes the measuring rod 303 to move along with the measuring pointer 304, which in turn causes the reading indicated by the measuring pointer 304 on the pressure scale plate 305 to change.

[0024] The positive pressure assembly 4 includes a positive pressure tube 401, which is fixedly connected to the outer wall of the measuring tube 2 and located on the back of the measuring piston 301. A positive pressure piston 403 is movably connected inside the positive pressure tube 401. A positive pressure lever 404 is movably connected to the right side of the positive pressure piston 403. A positive pressure handle 405 is fixedly connected to the right side of the positive pressure lever 404.

[0025] Inside the positive pressure tube 401, a one-way valve 402 is fixedly connected to the left side of the positive pressure piston 403. The one-way valve 402 can only allow gas to enter the measuring tube 2 through the one-way valve 402. Inside the positive pressure piston 403, a positive pressure movable plug 406 is movably connected. A through hole is provided at the corresponding position of the positive pressure piston 403 and the positive pressure movable plug 406.

[0026] When online testing is required, pushing the positive pressure handle 405 to the left will cause the positive pressure handle 405 to push the positive pressure piston 403 to the left via the positive pressure lever 404. This movement of the positive pressure piston 403 to the left compresses the space between the positive pressure piston 403 and the positive pressure movable plug 406. The gas between them is blocked by the positive pressure movable plug 406 and cannot escape from the opening on the positive pressure piston 403, increasing the internal pressure. This allows gas to enter the measuring tube 2 through the one-way valve 402, further increasing the gas volume inside the tank and increasing the internal pressure. Pulling the positive pressure handle 405 to the right will then pull the positive pressure piston 403 to the right via the positive pressure lever 404, causing the positive pressure piston 403 to... The space between the one-way valves 402 increases, and the one-way valves 402 will prevent the gas inside the detection tube 1 from passing through the positive pressure tube 401. This causes the gas on the right side of the positive pressure piston 403 to push the positive pressure movable plug 406 through the through hole on the positive pressure piston 403 into the space between the positive pressure piston 403 and the one-way valve 402. Pushing it to the left again will allow the newly entered gas to enter the measuring tube 2, thereby increasing the gas pressure inside the tank. Continuously pull the positive pressure handle 405 back and forth and observe the scale indicated by the measuring pointer 304 on the pressure scale plate 305. If the gas pressure scale indicated by the measuring pointer 304 increases to a fixed value and no longer changes, it means that the breathing valve is working normally. If the gas pressure scale indicated by the measuring pointer 304 continues to increase, it means that the breathing valve is not working properly.

[0027] Example 2: Please refer to Figure 1-11 Based on Embodiment 1, the present invention provides a technical solution: The negative pressure assembly 5 includes a negative pressure tube 501, which is fixedly connected to the outer wall of the measuring tube 2 and located on the back of the measuring piston 301. A negative pressure piston 504 is movably connected inside the negative pressure tube 501. A negative pressure pull rod 505 is fixedly connected to the left side of the negative pressure piston 504. A negative pressure handle 506 is fixedly connected to the left side of the negative pressure pull rod 505. A negative pressure movable plug 507 is movably connected to the outer wall of the negative pressure pull rod 505. A negative pressure spring 508 is fixedly connected to the left side of the negative pressure movable plug 507 and is fixedly connected to the negative pressure pull rod 505. A through hole is provided on the negative pressure piston 504 at the corresponding position of the negative pressure movable plug 507.

[0028] A gas-blocking ring 502 is fixedly connected inside the negative pressure pipe 501. A gas-blocking plate 503 is movably connected to the left side of the gas-blocking ring 502. When the gas-blocking plate 503 and the gas-blocking ring 502 are closed, they can seal the gas.

[0029] Stop pulling the positive pressure handle 405 and pull the negative pressure handle 506 back and forth. When the negative pressure handle 506 is pulled to the left, it will pull the negative pressure piston 504 through the negative pressure lever 505, increasing the space between the negative pressure piston 504 and the air-blocking ring 502 and lowering the air pressure. The gas inside the measuring tube 2 will push open the air-blocking plate 503 and enter the space between the negative pressure piston 504 and the air-blocking ring 502. Then, push the negative pressure handle 506 to the right, increasing the air pressure between the negative pressure piston 504 and the air-blocking ring 502. The increased air pressure will push the air-blocking plate 503 and the air-blocking ring 502 to close, preventing gas from entering. When the gas enters the measuring tube 2, it pushes the negative pressure movable plug 507, which compresses the negative pressure spring 508, allowing the gas to pass through the through hole of the negative pressure piston 504 and be discharged. Continuously pulling the negative pressure handle 506 will lower the air pressure inside the measuring tube 2. Continuously pull the negative pressure handle 506 back and forth and observe the scale indicated by the measuring pointer 304 on the pressure scale plate 305. If the air pressure scale indicated by the measuring pointer 304 decreases to a fixed value and no longer changes, it means that the breathing valve negative pressure is working normally. If the air pressure scale indicated by the measuring pointer 304 continues to decrease, it means that the breathing valve negative pressure is malfunctioning.

[0030] The bottom of the negative pressure pipe 501 is fixedly connected to the air block box 509 on the left side of the negative pressure piston 504. The sealing sheet 510 is movably connected inside the air block box 509. The outer wall of the air block box 509 is fixedly connected to the pull-out block 511, which prevents the sealing sheet 510 from being pulled out from the inside of the air block box 509.

[0031] The sealing plate 510, located inside the gas-blocking box 509, prevents excessive air pressure inside the measuring tube 2 from pushing open the negative pressure spring 508 and causing gas to overflow. During positive pressure testing, the sealing plate 510 is positioned inside the gas-blocking box 509 to seal the air. During negative pressure testing, the sealing plate 510 is pulled outward, causing it to cease its sealing function. When the internal air pressure decreases, the external air pressure pushes the positive pressure piston 403 to engage with the one-way valve 402. The positive pressure piston 403 and the one-way valve 402 then press against each other to seal the positive pressure movable plug 406, preventing external air pressure from entering the positive pressure tube 401 through the one-way valve 402.

[0032] Example 3: Please refer to Figure 1-12 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: The gas supply assembly 6 includes a gas supply box 601. An air inlet 602 is provided on the left side of the gas supply box 601. A sealing cover for sealing is provided on the outer wall of the air inlet 602. A positive pressure connecting pipe 603 is fixedly connected to the left side of the gas supply box 601. A negative pressure connecting pipe 604 is fixedly connected to the left side of the gas supply box 601. A guide rod 606 is fixedly connected inside the gas supply box 601. A movable plate 605 is movably connected to the outer wall of the guide rod 606. The guide rod 606 serves to fix and guide the movable plate 605. A gas supply pull rod 607 is fixedly connected to the right side of the movable plate 605. A gas supply handle 608 is fixedly connected to the right side of the gas supply pull rod 607.

[0033] The bottom of the positive pressure connecting pipe 603 and the bottom of the positive pressure pipe 401 are fixedly connected to the right side of the positive pressure piston 403, and the bottom of the negative pressure connecting pipe 604 is fixedly connected to the bottom of the air-blocking box 509.

[0034] In some special industrial storage scenarios, non-gaseous substances stored in storage tanks are protected by special gases. If outside air is allowed to mix into the tank during testing, it can damage the stored substances and may even trigger some special chemical reactions.

[0035] Before testing, unscrew the sealing cap at the air inlet 602, push the air supply handle 608 inward, and let the air supply lever 607 push the movable plate 605 to discharge the gas inside the air supply box 601 from the air inlet 602. Then, the gas that is compatible with the storage tank is filled into the air supply box 601 through the air inlet 602, and then the sealing cap is used to seal the air inlet 602.

[0036] When the positive pressure handle 405 is pulled repeatedly to perform a positive pressure test, the positive pressure piston 403 pushes the gas inside the air supply box 601 into the measuring tube 2 to increase the internal air pressure, thus preventing outside air from mixing into the measuring tube 1. When the negative pressure handle 506 is pulled repeatedly to perform a negative pressure test, the gas inside the measuring tube 2 enters the air supply box 601, thus preventing the internal gas from being discharged into the outside air.

[0037] First, positive pressure is detected by positive pressure component 4. If the positive pressure of the breather valve is abnormal, the gas inside the storage tank can be sent into the gas supply box 601 through negative pressure connecting pipe 604 via negative pressure component 5 for storage, so as to avoid excessive gas pressure inside the storage tank, which may affect the substances stored inside the storage tank.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online detection device for the breather valve of an atmospheric pressure storage tank, comprising a detection tube (1), characterized in that: The outer wall of the detection tube (1) is fixedly connected to the measuring tube (2), the measuring tube (2) is provided with a measuring component (3), the outer wall of the measuring tube (2) is fixedly connected to a positive pressure component (4), the outer wall of the measuring tube (2) is fixedly connected to a negative pressure component (5), and the outer wall of the positive pressure component (4) is fixedly connected to a gas supply component (6). The measurement component (3) includes: Measuring piston (301), which is movably connected inside measuring tube (2); A measuring spring (302) is fixedly connected to the front of the measuring piston (301); Measuring rod (303), which is movably connected to the front of measuring piston (301); The positive pressure assembly (4) includes a positive pressure tube (401), which is fixedly connected to the outer wall of the measuring tube (2) and located on the back of the measuring piston (301). A positive pressure piston (403) is movably connected inside the positive pressure tube (401). A positive pressure lever (404) is movably connected to the right side of the positive pressure piston (403). A positive pressure handle (405) is fixedly connected to the right side of the positive pressure lever (404). The negative pressure assembly (5) includes a negative pressure tube (501), which is fixedly connected to the outer wall of the measuring tube (2) and located on the back of the measuring piston (301). A negative pressure piston (504) is movably connected inside the negative pressure tube (501). A negative pressure pull rod (505) is fixedly connected to the left side of the negative pressure piston (504). A negative pressure handle (506) is fixedly connected to the left side of the negative pressure pull rod (505). A negative pressure movable plug (507) is movably connected to the outer wall of the negative pressure pull rod (505). A negative pressure spring (508) is fixedly connected to the left side of the negative pressure movable plug (507), and the negative pressure spring (508) is fixedly connected to the negative pressure pull rod (505). A through hole is provided at the corresponding position of the negative pressure movable plug (507) on the negative pressure piston (504). An air-blocking ring (502) is fixedly connected inside the negative pressure pipe (501), and an air-blocking plate (503) is movably connected to the left side of the air-blocking ring (502). The bottom of the negative pressure tube (501) is fixedly connected to the air block box (509) on the left side of the negative pressure piston (504). A sealing sheet (510) is movably connected inside the air block box (509), and a pull-out block (511) is fixedly connected to the outer wall of the air block box (509). The gas supply assembly (6) includes a gas supply box (601), an air inlet (602) is provided on the left side of the gas supply box (601), a sealing cover for sealing is provided on the outer wall of the air inlet (602), a positive pressure connecting pipe (603) is fixedly connected to the left side of the gas supply box (601), a negative pressure connecting pipe (604) is fixedly connected to the left side of the gas supply box (601), a guide rod (606) is fixedly connected inside the gas supply box (601), a movable plate (605) is movably connected to the outer wall of the guide rod (606), a gas supply pull rod (607) is fixedly connected to the right side of the movable plate (605), and a gas supply handle (608) is fixedly connected to the right side of the gas supply pull rod (607).

2. The online detection device for the breather valve of an atmospheric pressure storage tank according to claim 1, characterized in that: The outer wall of the measuring tube (2) is fixedly connected to the bottom of the measuring rod (303) with a pressure scale plate (305). The bottom of the measuring rod (303) is fixedly connected to the top of the pressure scale plate (305) with a measuring pointer (304). The top of the pressure scale plate (305) is provided with a pressure scale.

3. The online detection device for the breather valve of an atmospheric pressure storage tank according to claim 1, characterized in that: A one-way valve (402) is fixedly connected inside the positive pressure pipe (401) to the left side of the positive pressure piston (403). A positive pressure movable plug (406) is movably connected inside the positive pressure piston (403). A through hole is provided at the corresponding position of the positive pressure movable plug (406) on the positive pressure piston (403).

4. The online detection device for the breather valve of an atmospheric pressure storage tank according to claim 1, characterized in that: The positive pressure connecting pipe (603) is fixedly connected to the bottom of the positive pressure pipe (401) on the right side of the positive pressure piston (403), and the negative pressure connecting pipe (604) is fixedly connected to the bottom of the air-blocking box (509).

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