Online detection of a breathing valve subvalve arrangement

Abstract

The utility model relates to respiration valve detection vice valve technical field, concretely relates to on -line detection respiration valve vice valve device, including the box, the box is opened and has the through -going upper and lower through -opening, the through -opening on the box top is fixed with upper connecting pipe, the through -opening on the box bottom is fixed with lower connecting pipe, and the lower connecting pipe reaches to the box, and the intermediate position of upper connecting pipe is opened and has the through -hole no. One, and the through -hole no. One orifice position fixed with detection pipe outside upper connecting pipe, and detection pipe and upper connecting pipe inside intercommunication, and the pipe mouth of detection pipe is screw thread connection has the pipe cap. The utility model sets up vice valve as the intermediate body of respiration valve and storage tank, needs to carry out detection to respiration valve, and the communication of respiration valve and storage tank is blocked from vice valve position and is closed, can detect respiration valve at this moment, need not to take down respiration valve, thereby avoid the damage of disassembly to sealing surface, also need not to stop production, reduced production loss, also reduced artificial climbing frequency, reduced the risk of high altitude operation.

Description

Technical Field

[0001] This utility model relates to the field of breathing valve detection auxiliary valve technology, specifically to an online detection device for breathing valve auxiliary valves. Background Technology

[0002] The breather valve is a key safety accessory installed on the top of the storage tank. Its core function is to automatically regulate the pressure balance inside and outside the storage tank, prevent the storage tank from deforming or rupturing due to overpressure or vacuum, and at the same time reduce the loss of the medium due to volatilization, thereby reducing the risk of environmental pollution.

[0003] The breathing valve needs to have its breathing pressure checked regularly to ensure that it is within the appropriate range. Currently, when checking the breathing valve, it is necessary to climb to the top of the storage tank, remove the breathing valve, manually carry the breathing valve down, and then check it. After the check is completed, the breathing valve is carried back to the top of the storage tank and then reinstalled. When the breathing valve is removed, the storage tank needs to be shut down, which leads to production stoppage losses. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] An online testing device for a breathing valve auxiliary valve includes a housing. The housing has a through-hole that runs vertically through it. An upper connecting pipe is fixed to the through-hole at the top of the housing, and a lower connecting pipe is fixed to the through-hole at the bottom of the housing. The lower connecting pipe extends into the housing. A through-hole is formed in the middle of the upper connecting pipe. A detection pipe is fixed at the opening of the through-hole on the outside of the upper connecting pipe. The detection pipe communicates with the interior of the upper connecting pipe, and a cap is threaded onto the opening of the detection pipe.

[0006] Furthermore, both the top of the upper connecting pipe and the bottom of the lower connecting pipe are fixed with circular flanges. The side of the housing has an opening, and a square flange is fixed at the opening. A square blind flange is installed on the square flange, and a PTFE gasket is placed between the square blind flange and the square flange. The flanges facilitate connection.

[0007] Furthermore, a quick-release chuck is fitted onto the lower connecting pipe opening inside the housing. A clamp is fixed to the outside of the quick-release chuck, and a circular blind plate is fixed to the inside of the quick-release chuck. The circular blind plate is used to seal the lower connecting pipe. The quick-release chuck and clamp are easy and simple to operate, facilitating use.

[0008] Furthermore, a valve plate is installed inside the lower connecting pipe within the housing. A valve stem is fixed to the side of the valve plate, extending outward through the lower connecting pipe. A motor is mounted on the valve stem outside the lower connecting pipe, and the motor's output end is connected to the valve stem via a limiting plug-in connection. A pressure sensor is installed at the top of the lower connecting pipe inside the housing. A vortex air pump is installed on the outside of the housing, with its output end connected to an air delivery pipe. The top end of the air delivery pipe, furthest from the vortex air pump, is connected to a detection pipe. The arrangement of the vortex air pump, pressure sensor, and valve plate allows for detection at any time of day and in any weather conditions.

[0009] Furthermore, an air filter is connected to the input end of the vortex air pump. This filters the intake air to prevent foreign objects such as dust and insects from being inhaled.

[0010] Furthermore, an upper limit ring and a lower limit ring are fixed inside the lower connecting pipe. The upper limit ring and the lower limit ring are spliced ​​together to form a circle. The upper limit ring is located at the top of the valve plate, and the lower limit ring is located at the bottom of the valve plate. The upper and lower surfaces of the valve plate abut against the upper limit ring and the lower limit ring, respectively. The upper and lower limit rings are used to ensure the sealing of the valve plate.

[0011] Furthermore, a second through hole is provided on the lower connecting pipe below the tank body. A fixing pipe is fixed to the second through hole on the outside of the lower connecting pipe, and a solenoid valve is installed at the end of the fixing pipe. One end of the solenoid valve is installed with the fixing pipe. A second air pressure sensor is threadedly connected to the lower connecting pipe below the valve plate inside the tank body. The detection end of the second air pressure sensor extends into the lower connecting pipe below the valve plate. In case the breather valve malfunctions and cannot work normally, emergency operations can be performed to avoid damage to the storage tank.

[0012] Furthermore, a bend is installed at the other end of the solenoid valve, with the bend's opening facing downwards. This reduces the possibility of foreign objects entering the environment.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model sets a secondary valve as an intermediate body between the breather valve and the storage tank. When the breather valve needs to be tested, it is blocked from the secondary valve position to cut off the connection between the breather valve and the storage tank. At this time, the breather valve can be tested without removing it, thus avoiding damage to the sealing surface caused by disassembly and assembly, and without stopping production. This reduces production stoppage losses, reduces the frequency of manual climbing, and lowers the risk of high-altitude operations.

[0015] 2. In this utility model, the lower connecting pipe is sealed with a circular blind plate and fixed with a quick-release chuck and clamps, which makes the operation convenient, simple and quick.

[0016] 3. This utility model is equipped with a vortex air pump and an air pressure sensor, which can be remotely controlled and detected without the need for manual on-site inspection, making the inspection more convenient. Moreover, it can be carried out at any time of day without time restrictions.

[0017] 4. This utility model is equipped with a solenoid valve and a pressure sensor. When the breathing valve fails and the pressure inside the storage tank cannot be balanced, the breathing valve can be opened for emergency balancing to avoid damage to the storage tank. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the circular blind plate in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamp arrangement in this utility model;

[0021] Figure 4 This is a schematic diagram of the gas transmission pipe arrangement in this utility model;

[0022] Figure 5 This is a schematic diagram of the valve plate arrangement in this utility model;

[0023] Figure 6 This is a schematic diagram of the setting of the limiting ring in this utility model.

[0024] Reference numerals: 1. Housing; 2. Upper connecting pipe; 3. Lower connecting pipe; 4. Square flange; 5. Through port; 6. Through hole one; 7. Circular blind flange; 8. Quick-release chuck; 9. Clamp; 10. Square blind flange; 11. PTFE gasket; 12. Detection pipe; 13. Pipe cap; 14. Vortex air pump; 15. Air supply pipe; 16. Air filter; 17. Pressure sensor one; 18. Valve plate; 19. Valve stem; 20. Motor; 21. Upper limit ring; 22. Lower limit ring; 23. Pressure sensor two; 24. Fixing pipe; 25. Solenoid valve; 26. Bend; 27. Through hole two; 28. Circular flange. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] This application provides an online detection device for the auxiliary valve of a breathing valve, and provides the following technical solution, which will be discussed below. Figures 1-6 Please provide a detailed explanation:

[0027] Example 1: Online detection device for the auxiliary valve of the breathing valve, such as... Figure 1-3As shown, the device includes a housing 1 with a through-hole 5 extending from top to bottom. An upper connecting pipe 2 is welded to the through-hole 5 at the top of the housing 1, and a lower connecting pipe 3 is welded to the through-hole 5 at the bottom of the housing 1. The lower connecting pipe 3 extends into the housing 1, and a quick-release chuck 8 is fitted onto the opening of the lower connecting pipe 3 inside the housing 1. A clamp 9 is fixed to the outside of the quick-release chuck 8, and a circular blind plate 7 is welded to the inside of the quick-release chuck 8. A clamp is welded to the top of the upper connecting pipe 2 and the bottom of the lower connecting pipe 3. The standard circular flange 28 has an opening on the side of the housing 1. A square flange 4 is welded and fixed at the opening. A square blind plate 10 is bolted to the square flange 4. A PTFE gasket 11 is fixed between the square blind plate 10 and the square flange 4. A through hole 6 is opened in the middle of the upper connecting pipe 2. A detection tube 12 is welded and fixed at the opening of the through hole 6 on the outside of the upper connecting pipe 2. The detection tube 12 is connected to the inside of the upper connecting pipe 2. A pipe cap 13 is threaded onto the opening of the detection tube 12.

[0028] In use, connect the bottom circular flange 28 of the lower connecting pipe 3 to the breather port of the storage tank, then connect the breather valve to the top circular flange 28 of the upper connecting pipe 2. Open the square blind flange 10, loosen the clamp 9 from inside the housing 1, and remove the clamp 9 and quick-release chuck 8 together. Finally, reinstall the square blind flange 10. At this time, the inside of the storage tank, the lower connecting pipe 3, the housing 1, the upper connecting pipe 2, and the breather valve are connected, and the breather valve can work normally. When it is necessary to test the opening and closing pressure of the breather valve, open the square blind flange 10, and clamp the quick-release chuck 8 again onto the pipe opening of the lower connecting pipe 3 inside the housing 1. Then use the clamp 9 to tighten the quick-release chuck 8. The top pipe opening of the lower connecting pipe 3 is covered and sealed by the circular blind flange 7, thus blocking the connection between the lower connecting pipe 3 and the housing 1. The storage tank is only connected to the inside of the lower connecting pipe 3, while the housing 1, the upper connecting pipe 2, and the breather valve are connected. Once connected, open pipe cap 13 and connect the breather valve pressure testing device to testing pipe 12. Turn on the testing device to begin testing; the breather valve does not need to be removed, thus avoiding damage to the sealing surface caused by manual disassembly, which could affect sealing performance. This complies with ASME PCC-1 bolt tightening standards. Manual personnel only need to climb once for testing, eliminating the need for a second climb to reinstall the breather valve, reducing the risk of working in confined spaces at height. This complies with OSHA 1910.146 confined space standards, reducing the frequency of high-altitude operations by over 90% (compared to NIOSH statistics on fall accidents in the petrochemical industry). Furthermore, the breather valve does not need to be disassembled, eliminating the need for tank shutdowns and avoiding downtime losses. A single test can save 72 hours of downtime. Overall, this online testing function complies with API 2000's "Venting Atmospheric and Low-Pressure Storage Tanks" standard.

[0029] The benefits include: increased testing efficiency by more than ten times; and reduced maintenance costs by more than 80% (including downtime losses, labor and equipment rental costs).

[0030] It can be applied to: annual calibration of breather valves in storage tanks of petroleum refineries; annual calibration of storage tanks for toxic and hazardous chemicals in the chemical industry; and annual calibration of storage tanks for toxic and hazardous chemicals in the pharmaceutical industry.

[0031] Example 2, as Figure 4 and Figure 5 As shown, the difference between this embodiment and embodiment one is that the circular blind plate 7, quick-release chuck 8, and clamp 9 are omitted, which can achieve real-time detection of the breathing valve 24 hours a day.

[0032] A valve plate 18 is installed inside the lower connecting pipe 3 inside the housing 1. A valve stem 19 is welded and fixed to the side of the valve plate 18. The valve stem 19 extends through the lower connecting pipe 3 to the outside. A motor 20 is installed on the valve stem 19 on the outside of the lower connecting pipe 3. The output end of the motor 20 is connected to the valve stem 19 in a limiting plug-in connection. A pressure sensor 17 is installed on the top of the lower connecting pipe 3 inside the housing 1 by bolts.

[0033] A vortex air pump 14 is bolted to the outside of the housing 1. The output end of the vortex air pump 14 is threaded to an air supply pipe 15. The top end of the air supply pipe 15, which is away from the vortex air pump 14, is threaded to a detection pipe 12.

[0034] When not under test, valve plate 18 remains in a vertically open position, ensuring communication between the storage tank and the breather valve. During testing, the test is performed when the internal pressure of the storage tank is balanced. First, motor 20 is activated, and its output drives valve stem 19 to rotate. Since valve stem 19 is welded and fixed to valve plate 18, it also drives valve plate 18 to rotate around valve stem 19 as its axis. After rotating valve plate 18 90°, it stops, changing its position from vertical to horizontal. The circumferential surface of valve plate 18 abuts against the wall of the lower connecting pipe 3 to form a seal. When the reading of pressure sensor 17 stabilizes, vortex pump 14 is activated. The input of vortex pump 14 draws in air from the environment and then outputs air from the tank. The gas is sent out from the outlet and connected to the detection tube 12 through the gas supply pipe 15. Therefore, the gas is finally sent into the upper connecting pipe 2 along the gas supply pipe 15 and the detection tube 12. At this time, the upper connecting pipe 2, the box 1 and the breathing valve are internally connected. The gas is finally filled into the upper connecting pipe 2, the box 1 and the breathing valve. As the gas is continuously filled, the internal pressure increases. When the pressure overcomes the spring pressure of the breathing valve, the spring is compressed and the valve of the breathing valve is opened. The internal gas is discharged through the opened valve. At this time, the internal pressure detected by the pressure sensor 17 is a small fluctuation value. By comparing this value with the design pressure of the breathing valve, it can be detected whether the opening pressure of the breathing valve is too high or too low.

[0035] The breathing valve has two actions: exhalation and inhalation. The above test detects exhalation. Inhalation testing can be performed before or after exhalation testing. During inhalation testing, the vortex air pump 14 is adjusted to the suction mode, and the original input and output ends are swapped. At this time, the end connected to the air supply pipe 15 is the input end. The vortex air pump 14 works to draw gas from the upper connecting pipe 2, the housing 1, and the breathing valve through the air supply pipe 15, creating a negative pressure state inside. The external atmospheric pressure will push the exhalation spring to compress. As the negative pressure continues to rise, the exhalation valve is eventually opened, and external air enters the upper connecting pipe 2, the housing 1, and the breathing valve. Due to the entry of external air, the internal air pressure is replenished. The lowest pressure value detected by the pressure sensor 17 is the inhalation opening pressure. By comparing this value with the design pressure of the breathing valve, it can be determined whether the opening pressure of the breathing valve is too high or too low. When the difference is large, the breathing valve should be repaired or replaced accordingly.

[0036] like Figure 4 As shown, the input end of the vortex air pump 14 is threadedly connected to an air filter 16.

[0037] During the breath test, the input end draws in air from the environment, and then the air enters the upper connecting pipe 2, the housing 1 and the breathing valve. To prevent dust, insects and other pollutants in the ambient air from being inhaled, an air filter 16 is installed to filter the inhaled air.

[0038] like Figure 6 As shown, an upper limit ring 21 and a lower limit ring 22 are welded and fixed inside the lower connecting pipe 3. The upper limit ring 21 and the lower limit ring 22 are spliced ​​into a circle. The upper limit ring 21 is located at the top of the valve plate 18, and the lower limit ring 22 is located at the bottom of the valve plate 18. The upper and lower surfaces of the valve plate 18 abut against the upper limit ring 21 and the lower limit ring 22, respectively.

[0039] The upper limit ring 21 and the lower limit ring 22 limit the opening and closing degree of the valve plate 18, while increasing the contact area between the valve plate 18 and the inner wall of the lower connecting pipe 3, thereby ensuring the sealing of the valve plate 18 in the lower connecting pipe 3.

[0040] like Figure 4 As shown, a through hole 27 is provided on the lower connecting pipe 3 below the box body 1. A fixing pipe 24 is welded and fixed on the through hole 27 on the outside of the lower connecting pipe 3. A solenoid valve 25 is installed at the end of the fixing pipe 24 by bolts. One end of the solenoid valve 25 is installed with the fixing pipe 24, and the other end of the solenoid valve 25 is installed with a bend 26 by bolts. The opening of the bend 26 is set downward. A pressure sensor 23 is threadedly connected to the lower connecting pipe 3 below the valve plate 18 inside the box body 1. The detection end of the pressure sensor 23 extends into the lower connecting pipe 3 below the valve plate 18.

[0041] If the breather valve malfunctions during use, preventing it from functioning properly, the high or low pressure inside the tank cannot be balanced by the breather valve. Since the tank is connected to the lower connecting pipe 3, the pressure sensor 23 can detect the pressure value inside the tank in real time. When the pressure value exceeds the safe value and continues to rise, it indicates that the breather valve is malfunctioning and cannot function properly. At this time, the solenoid valve 25 is opened, forming a connecting path between the bend pipe 26, the fixed pipe 24, and the lower connecting pipe 3. External air can enter the tank through this path, or gas inside the tank can be discharged through this path, thereby balancing the pressure inside the tank and avoiding the risk caused by the breather valve malfunction not being detected and dealt with in time. At the same time, the opening of the bend pipe 26 is set downward to reduce the possibility of foreign objects entering the bend pipe 26 and then entering the tank when the solenoid valve 25 is opened.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online detection device for a breathing valve auxiliary valve, comprising a housing (1), characterized in that, The box (1) has a through opening (5) that runs through the top and bottom. An upper connecting pipe (2) is fixed on the through opening (5) at the top of the box (1), and a lower connecting pipe (3) is fixed on the through opening (5) at the bottom of the box (1). The lower connecting pipe (3) extends into the box (1). A through hole (6) is opened in the middle of the upper connecting pipe (2). A detection pipe (12) is fixed at the opening of the through hole (6) on the outside of the upper connecting pipe (2). The detection pipe (12) communicates with the inside of the upper connecting pipe (2). A pipe cap (13) is threaded onto the opening of the detection pipe (12).

2. The online detection device for the auxiliary valve of the breathing valve according to claim 1, characterized in that, The top of the upper connecting pipe (2) and the bottom of the lower connecting pipe (3) are both fixed with circular flanges (28). The side opening of the box body (1) is fixed with a square flange (4). A square blind plate (10) is installed on the square flange (4). A PTFE gasket (11) is provided between the square blind plate (10) and the square flange (4).

3. The online detection device for the secondary valve of the breathing valve according to claim 2, characterized in that, The lower connecting pipe (3) inside the box (1) is fitted with a quick-release chuck (8), and a clamp (9) is fixed on the outside of the quick-release chuck (8). A circular blind plate (7) is fixed on the inside of the quick-release chuck (8).

4. The online detection device for the secondary valve of the breathing valve according to claim 2, characterized in that, A valve plate (18) is installed in the lower connecting pipe (3) inside the box (1). A valve stem (19) is fixed on the side of the valve plate (18). The valve stem (19) extends through the lower connecting pipe (3) to the outside. A motor (20) is installed on the valve stem (19) outside the lower connecting pipe (3). The output end of the motor (20) is connected to the valve stem (19) in a limiting plug-in connection. A pressure sensor (17) is installed on the top of the lower connecting pipe (3) inside the box (1). A vortex air pump (14) is installed on the outside of the box (1). The output end of the vortex air pump (14) is connected to an air supply pipe (15). The top end of the air supply pipe (15) away from the vortex air pump (14) is connected to a detection pipe (12).

5. The online detection device for the secondary valve of the breathing valve according to claim 4, characterized in that, An air filter (16) is connected to the input end of the vortex air pump (14).

6. The online detection device for the secondary valve of the breathing valve according to claim 4, characterized in that, The lower connecting pipe (3) is fixed with an upper limit ring (21) and a lower limit ring (22). The upper limit ring (21) and the lower limit ring (22) are spliced ​​into a circle. The upper limit ring (21) is located at the top of the valve plate (18), and the lower limit ring (22) is located at the bottom of the valve plate (18). The upper and lower surfaces of the valve plate (18) respectively abut against the upper limit ring (21) and the lower limit ring (22).

7. The online detection device for the secondary valve of the breathing valve according to claim 3 or 4, characterized in that, A through hole 27 is provided on the lower connecting pipe (3) below the box (1). A fixing pipe (24) is fixed on the through hole 27 on the outside of the lower connecting pipe (3). A solenoid valve (25) is installed at the end of the fixing pipe (24). One end of the solenoid valve (25) is installed with the fixing pipe (24). A pressure sensor 2 (23) is threadedly connected to the lower connecting pipe (3) below the valve plate (18) inside the box (1). The detection end of the pressure sensor 2 (23) extends into the lower connecting pipe (3) below the valve plate (18).

8. The online detection device for the auxiliary valve of the breathing valve according to claim 7, characterized in that, The other end of the solenoid valve (25) is equipped with a bend (26), with the opening of the bend (26) facing downwards.

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