An online auxiliary opening safety valve

Abstract

The utility model discloses an online auxiliary opening safety valve, comprising a safety valve body, wherein an auxiliary air cavity and a pressure relief valve cavity are sequentially opened inside the safety valve body from top to bottom, the bottom end of the pressure relief valve cavity is fixedly connected with a medium port, a pressure transmitter is fixedly installed on one side of the medium port, a vent port is fixedly connected on one side of the pressure relief valve cavity, a valve core component for balancing the system pressure is fixedly installed inside the pressure relief valve cavity, and an adjustment component is fixedly installed on the top of the safety valve body. The utility model discloses an online auxiliary opening safety valve, which realizes the auxiliary opening operation of the safety valve through a solenoid valve, utilizes a pressure transmitter to monitor the state of the safety valve in real time, promptly discovers abnormal conditions and performs auxiliary opening operation, thereby ensuring the safety and reliability of the equipment and solving the problem of adhesion or jamming of the safety valve; an auxiliary air source is added to ensure that when needed, sufficient auxiliary air pressure can be provided to assist in opening the safety valve, thereby reducing safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of safety pressure relief valves, in particular to an online auxiliary opening safety valve. Background Art

[0002] Safety valve, also known as pressure relief valve, is a valve that is kept closed by springs, weights or other means, and automatically opens when the pressure exceeds a given value. It belongs to the category of automatic valves. Safety valves play a role in protecting the safety of equipment and controlling the pressure not to exceed the specified value. In industrial production, safety valves are a very important equipment to avoid pressure overload. Currently, common safety valves are mainly composed of valve body, valve core and valve cover. A spring is installed inside the valve core. The elastic force of the spring causes the valve plug to block the air port to achieve the effect of balancing the air pressure. The above common types of safety valves have the following shortcomings in actual applications:

[0003] If the safety valve is in a closed state for a long time, it may become stuck or jammed, resulting in it being unable to open normally when needed, posing potential safety hazards to industrial production. Utility Model Content

[0004] The utility model aims to provide an online auxiliary opening safety valve to solve the problem of potential safety hazards in the existing safety valves mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online auxiliary opening safety valve, comprising a safety valve body, wherein an auxiliary air cavity and a pressure relief valve cavity are sequentially opened inside the safety valve body from top to bottom, the bottom end of the pressure relief valve cavity is fixedly connected with a medium port, a pressure transmitter is fixedly installed on one side of the medium port, a vent port is fixedly connected on one side of the pressure relief valve cavity, a valve core assembly for balancing the system pressure is fixedly installed inside the pressure relief valve cavity, an adjustment assembly is fixedly installed on the top of the safety valve body, an auxiliary air source tank is fixedly installed on one side of the safety valve body, an auxiliary valve opening assembly is fixedly installed on the air outlet of the auxiliary air source tank, one side of the auxiliary air cavity is fixedly connected with an auxiliary port, and one side of the auxiliary air source tank is fixedly installed with a single-chip microcomputer controller.

[0006] Preferably, the valve core assembly includes a pressure relief valve plate and a valve stem fixedly mounted on the pressure relief valve plate, the top end of the valve stem extends to the interior of the auxiliary air chamber, an upper valve plate is fixedly mounted on the top end of the valve stem, a return spring is sleeved on the surface of the valve stem, and the pressure relief valve plate is arranged opposite to the medium port; the pressure relief is stable, safe and reliable.

[0007] Preferably, the adjustment assembly includes a top cover and a connecting plate slidably arranged on the inner side of the top cover, an adjustment spring is fixedly arranged at the bottom end of the connecting plate, the bottom end of the adjustment spring is fixedly arranged on the upper valve plate, and an adjusting bolt is arranged at the top end of the connecting plate.

[0008] Preferably, the top end of the adjusting bolt passes through the top sealing cover, the top end of the adjusting bolt is threadedly connected with a locking nut, the adjusting bolt is slidably set on the top sealing cover, and a protective cover is fixed to the periphery of the top end of the top sealing cover by screws, so as to facilitate the adjustment of the pressure relief pressure.

[0009] Preferably, the auxiliary valve opening assembly includes an air source pipe and a three-way pipe fixedly connected to the top end of the air source pipe, a solenoid valve A is fixedly installed in the middle of the air source pipe, the top end of the three-way pipe is fixedly connected to an exhaust pipe, a solenoid valve B is fixedly installed in the middle of the exhaust pipe, and one end of the three-way pipe is fixedly connected to the auxiliary port; an auxiliary air source is added to ensure that when needed, sufficient auxiliary air pressure can be provided to assist in opening the safety valve, thereby reducing safety hazards.

[0010] Preferably, an air inlet flange is fixedly provided at the bottom end of the medium port, and an air outlet flange is fixedly provided at one end of the vent port, so as to facilitate the installation and use of the safety valve.

[0011] Preferably, a charging valve port is fixedly installed at the bottom of the auxiliary gas source tank, so that the staff can replenish the gas in the auxiliary gas source tank regularly.

[0012] Preferably, a pressure gauge is fixedly installed on the top of the auxiliary gas source tank, which is convenient for the staff to observe the air pressure status in the auxiliary gas source tank, so as to replenish it in time and ensure that there is sufficient air pressure in the auxiliary gas source tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The safety valve realizes the auxiliary opening operation of the safety valve through the solenoid valve, and uses the pressure transmitter to monitor the status of the safety valve in real time, promptly discovers abnormal conditions and performs auxiliary opening operations to ensure the safety and reliability of the equipment and solve the problem of safety valve adhesion or jamming; an auxiliary air source is added to ensure that when needed, sufficient auxiliary air pressure can be provided to assist in opening the safety valve, thereby reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the safety valve of the utility model;

[0016] Figure 2 This is a front cross-sectional view of the safety valve of the utility model;

[0017] Figure 3 This is a front cross-sectional view of the safety valve body of the utility model;

[0018] Figure 4 It is an enlarged view of part A of the utility model.

[0019] In the figure: 1. Safety valve body; 2. Vent port; 3. Medium port; 4. Inlet flange; 5. Pressure transmitter; 6. Outlet flange; 7. Auxiliary gas source tank; 8. Single chip controller; 9. Gas source pipe; 10. Solenoid valve A; 11. Three-way pipe; 12. Auxiliary port; 13. Solenoid valve B; 14. Exhaust pipe; 15. Top cover; 16. Protective cover; 17. Inflating valve port; 18. Pressure relief valve plate; 19. Return spring; 20. Auxiliary gas chamber; 21. Pressure relief valve chamber; 22. Valve stem; 23. Upper valve plate; 24. Adjustment spring; 25. Connecting plate; 26. Adjustment bolt; 27. Locking nut; 28. Pressure gauge. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-4 The utility model provides an online auxiliary opening safety valve, including a safety valve body 1, wherein an auxiliary air chamber 20 and a pressure relief valve chamber 21 are sequentially opened inside the safety valve body 1 from top to bottom, a medium port 3 is fixedly connected to the bottom end of the pressure relief valve chamber 21, a pressure transmitter 5 is fixedly installed on one side of the medium port 3, a vent port 2 is fixedly connected to one side of the pressure relief valve chamber 21, a valve core assembly for balancing the system pressure is fixedly installed inside the pressure relief valve chamber 21, an adjustment assembly is fixedly installed on the top end of the safety valve body 1, an auxiliary air source tank 7 is fixedly installed on one side of the safety valve body 1, an auxiliary valve opening assembly is fixedly installed on the air outlet of the auxiliary air source tank 7, an auxiliary port 12 is fixedly connected to one side of the auxiliary air chamber 20, a single-chip controller 8 is fixedly installed on one side of the auxiliary air source tank 7, a charging valve port 17 is fixedly installed on the bottom of the auxiliary air source tank 7, a pressure gauge 28 is fixedly installed on the top of the auxiliary air source tank 7, an air inlet flange 4 is fixedly arranged on the bottom end of the medium port 3, and an air outlet flange 6 is fixedly arranged on one end of the vent port 2.

[0022] See also Figure 1 , Figure 2 and Figure 3 Further, the valve core assembly includes a pressure relief valve plate 18 and a valve stem 22 fixedly arranged on the pressure relief valve plate 18, the top end of the valve stem 22 extends to the inside of the auxiliary air chamber 20, an upper valve plate 23 is fixedly arranged on the top end of the valve stem 22, a return spring 19 is sleeved on the surface of the valve stem 22, and the pressure relief valve plate 18 is arranged opposite to the medium port 3;

[0023] During use, when the pressure in the container or device is too high, the air pressure will rush upward from the medium port 3 to the pressure relief valve plate 18, squeezing the return spring 19 to contract, and the pressure relief valve plate 18 will move upward, allowing the gas in the container or device to enter the pressure relief valve cavity 21 through the medium port 3, and finally be discharged through the vent port 2. After the pressure in the container or device is restored, the pressure relief valve plate 18 returns to its original position under the action of the elastic force of the return spring 19.

[0024] See also Figure 1 , Figure 2 and Figure 4 Further, the adjustment assembly includes a top sealing cover 15 and a connecting plate 25 slidably arranged on the inner side of the top sealing cover 15, an adjusting spring 24 is fixedly arranged at the bottom end of the connecting plate 25, the bottom end of the adjusting spring 24 is fixedly arranged on the upper valve plate 23, an adjusting bolt 26 is arranged at the top end of the connecting plate 25, the top end of the adjusting bolt 26 passes through the top sealing cover 15, a locking nut 27 is threadedly connected to the top end of the adjusting bolt 26, the adjusting bolt 26 is slidably arranged on the top sealing cover 15, and a protective cover 16 is fixedly arranged on the periphery of the top end of the top sealing cover 15 by screws;

[0025] When in use, the staff can remove the protective cover 16 and turn the locking nut 27 to move the adjusting bolt 26 vertically downward on the top sealing cover 15, push the connecting plate 25 to move, and then push the upper valve plate 23 by adjusting the spring 24 to adjust the sealing force.

[0026] See also Figure 1 and Figure 2 Further, the auxiliary valve opening assembly includes an air source pipe 9 and a three-way pipe 11 fixedly connected to the top of the air source pipe 9, a solenoid valve A10 is fixedly installed in the middle of the air source pipe 9, an exhaust pipe 14 is fixedly connected to the top of the three-way pipe 11, a solenoid valve B13 is fixedly installed in the middle of the exhaust pipe 14, and one end of the three-way pipe 11 is fixedly connected to the auxiliary port 12;

[0027] During use, when the pressure transmitter 5 detects that the pressure in the container or device is too high, the safety valve is not opened to release the pressure. At this time, the single-chip controller 8 controls the solenoid valve A10 to power on, and the solenoid valve B13 is in a power-off closed state. The gas in the auxiliary gas source tank 7 enters the three-way pipe 11 through the gas source pipe 9, and then enters the auxiliary gas cavity 20 through the auxiliary port 12. The gas enters the auxiliary gas cavity 20 and rushes up against the valve plate 23 from bottom to top, thereby pulling the pressure relief valve plate 18 upward through the valve stem 22, so that the gas in the container or device enters the pressure relief valve cavity 21 through the medium port 3, and is finally discharged through the vent port 2. After the internal pressure of the container or device is restored, the pressure relief valve plate 18 returns to its position under the action of the elastic force of the return spring 19.

[0028] When the embodiment of the present application is in use: in the initial state, both the solenoid valve A10 and the solenoid valve B13 are in the closed state, and the safety valve body 1 is in a normal working state. Only when the pressure transmitter 5 detects that the pressure in the container or device is too high, the safety valve does not open to release the pressure. At this time, the single-chip controller 8 controls the solenoid valve A10 to be powered on, and the solenoid valve B13 is in the power-off closed state. The gas in the auxiliary gas source tank 7 enters the three-way pipe 11 through the gas source pipe 9, and then enters the auxiliary gas cavity 20 through the auxiliary port 12, forcing the safety valve to open and release the pressure. After the pressure in the device or container is reduced, the pressure transmitter 5 detects that the pressure is restored, and the solenoid valve A10 is closed. After 10 to 15 seconds, the single-chip controller 8 controls the solenoid valve B13 to be powered on, and the auxiliary gas in the auxiliary gas cavity 20 is discharged through the exhaust pipe 14 of the solenoid valve B13. Under the action of the return spring 19, the safety valve returns to the closed state;

[0029] By introducing solenoid valve control and adding an external gas source, the opening efficiency of the safety valve can be improved and a faster and more stable discharge effect can be achieved, thereby reducing the risk of damage to equipment such as pressure vessels or pipeline systems and improving production efficiency and quality levels. At the same time, the external gas source can be used as a backup gas source to ensure that the safety valve can still be opened normally when the original gas source fails, thereby enhancing the reliability and stability of the entire system. It has the advantages of high degree of automation, no need for manual intervention, ability to respond quickly to abnormal situations, simple and reliable structure, and economy. In addition, attention should be paid to timely maintenance and care to ensure the normal operation and service life of the entire system. In future applications, the function and application scope of the device can be further expanded to adapt to the changing market demands and technological development trends and achieve greater economic and social benefits.

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

Claims

1. An online auxiliary opening safety valve, comprising a safety valve body (1), characterized in that: The interior of the safety valve body (1) is provided with an auxiliary air chamber (20) and a pressure relief valve chamber (21) in sequence from top to bottom; the bottom end of the pressure relief valve chamber (21) is fixedly connected to a medium port (3); a pressure transmitter (5) is fixedly installed on one side of the medium port (3); a vent port (2) is fixedly connected to one side of the pressure relief valve chamber (21); a valve core assembly for balancing system pressure is fixedly installed inside the pressure relief valve chamber (21); an adjustment assembly is fixedly installed on the top end of the safety valve body (1); an auxiliary air source tank (7) is fixedly installed on one side of the safety valve body (1); an auxiliary valve opening assembly is fixedly installed at the air outlet of the auxiliary air source tank (7); an auxiliary port (12) is fixedly connected to one side of the auxiliary air chamber (20); and a single-chip microcomputer controller (8) is fixedly installed on one side of the auxiliary air source tank (7).

2. The online auxiliary opening safety valve according to claim 1 is characterized in that: The valve core assembly comprises a pressure relief valve plate (18) and a valve stem (22) fixedly arranged on the pressure relief valve plate (18), the top end of the valve stem (22) extends to the interior of the auxiliary air chamber (20), an upper valve plate (23) is fixedly arranged on the top end of the valve stem (22), a return spring (19) is sleeved on the surface of the valve stem (22), and the pressure relief valve plate (18) is arranged opposite to the medium port (3).

3. The online auxiliary opening safety valve according to claim 1 is characterized in that: The adjustment assembly comprises a top cover (15) and a connecting plate (25) slidably arranged on the inner side of the top cover (15), an adjustment spring (24) is fixedly arranged at the bottom end of the connecting plate (25), the bottom end of the adjustment spring (24) is fixedly arranged on the upper valve plate (23), and an adjusting bolt (26) is arranged at the top end of the connecting plate (25).

4. The online auxiliary opening safety valve according to claim 3 is characterized in that: The top end of the adjusting bolt (26) passes through the top sealing cover (15), the top end of the adjusting bolt (26) is threadedly connected with a locking nut (27), the adjusting bolt (26) is slidably arranged on the top sealing cover (15), and a protective cover (16) is fixed to the periphery of the top end of the top sealing cover (15) by screws.

5. The online auxiliary opening safety valve according to claim 1 is characterized in that: The auxiliary valve opening assembly comprises an air source pipe (9) and a three-way pipe (11) fixedly connected to the top end of the air source pipe (9); a solenoid valve A (10) is fixedly installed in the middle of the air source pipe (9); the top end of the three-way pipe (11) is fixedly connected to an exhaust pipe (14); the middle part of the exhaust pipe (14) is fixedly installed with a solenoid valve B (13); and one end of the three-way pipe (11) is fixedly connected to the auxiliary port (12).

6. The online auxiliary opening safety valve according to claim 1, characterized in that: An air inlet flange (4) is fixedly provided at the bottom end of the medium port (3), and an air outlet flange (6) is fixedly provided at one end of the vent port (2).

7. The online auxiliary opening safety valve according to claim 1, characterized in that: A charging valve port (17) is fixedly mounted on the bottom of the auxiliary gas source tank (7).

8. The online auxiliary opening safety valve according to claim 1 is characterized in that: A pressure gauge (28) is fixedly mounted on the top of the auxiliary gas source tank (7).

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