Safety valve special for gas storage tank

Abstract

The invention discloses a safety valve special for a gas storage tank. The device comprises an air inlet pipe fitting, the top of the air inlet pipe fitting is provided with a pressure relief structure, and the bottom of the air inlet pipe fitting is provided with an air outlet pipe fitting; the pressure relief structure is provided with an automatic pressure relief piece and a manual pressure relief piece; and the air outlet pipe fitting is rotationally connected with the air inlet pipe fitting, and a fixing piece is arranged on the outer surface of the air outlet pipe fitting. According to the gas storage tank, the gas sensor and the blocking structure are arranged, when the safety valve is in a valve closing state, if the gas sensor is triggered to start the blocking structure, the gas outlet end of the safety valve is blocked by the blocking structure, and leakage of gas in the gas storage tank is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of safety valves, in particular to a special safety valve for gas storage tanks. Background Art

[0002] Safety valves are special valves whose opening and closing parts are normally closed under the action of external forces. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valves belong to automatic valves and are mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, which plays an important protective role in personal safety and equipment operation. Note: Safety valves must undergo pressure tests before use.

[0003] The safety valve used on the existing gas tank requires the staff to manually open and close the valve when it is needed. However, when the safety valve on the existing gas tank is closed, if the gas pressure in the gas tank is high, the existing safety valve cannot relieve the pressure in the gas tank. Moreover, when the existing safety valve is closed, if the valve in the safety valve fails and leaks, the gas outlet end of the safety valve cannot be automatically blocked, thereby causing gas leakage in the gas tank. Summary of the invention

[0004] The purpose of the present invention is to provide a special safety valve for a gas storage tank to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a safety valve for a gas storage tank, comprising: An air inlet pipe, wherein a pressure relief structure is arranged on the top of the air inlet pipe, and an air outlet pipe is arranged on the bottom of the air inlet pipe; A pressure relief structure, wherein the pressure relief structure is provided with an automatic pressure relief component and a manual pressure relief component; An air outlet pipe fitting is rotatably connected to an air inlet pipe fitting, and a fixing piece is arranged on the outer surface of the air outlet pipe fitting.

[0006] By adopting the above technical solution, the air inlet pipe is connected to the air outlet pipe, and the pressure relief structure can be an automatic pressure relief part and a manual pressure relief part. In normal use, the staff can open the valve through the pressure relief structure. If an emergency occurs, the pressure relief structure can quickly close the valve. If the air pressure in the air storage tank is too high, the pressure relief structure can realize the pressure relief operation.

[0007] Preferably, the air inlet pipe comprises a first tube body, an air pressure sensor is provided on the outer surface of the first tube body close to the air inlet end, and a valve is provided inside the first tube body close to the air outlet end.

[0008] By adopting the above technical solution, the air pressure sensor can detect the air pressure in the air intake pipe in real time.

[0009] Preferably, the pressure relief structure includes a shell, a first motor and a handle are provided on the outer surface of the shell, the shell is provided with a first bevel gear through the first motor and the handle, a ring gear is rotatably installed inside the shell, a rotating rod is rotatably provided at the middle position of the ring gear, and the first bevel gear is meshed with the ring gear.

[0010] By adopting the above technical solution, the first motor and the handle can both drive the first bevel gear to rotate, thereby driving the ring gear to rotate, so that the rotating rod can move inside the ring gear.

[0011] Preferably, the air outlet pipe comprises a second pipe body, a second motor is arranged on the outer surface of the second pipe body, a second bevel gear is arranged at the output end of the second motor, and a blocking structure is arranged inside the second pipe body.

[0012] By adopting the above technical solution, the blocking structure can block the gas outlet end of the gas outlet pipe to prevent gas leakage in the gas storage tank.

[0013] Preferably, the blocking structure comprises a connecting piece, the connecting piece is arranged inside the second tube body, and a rotating piece is rotatably mounted on the top of the connecting piece.

[0014] Preferably, the fixing member comprises a fixing ring, the outer surface of the second tube body is provided with a fixing ring, and the second tube body is mounted with a power supply and a gas sensor via the fixing ring.

[0015] By adopting the above technical solution, when the valve cannot completely block the gas and leakage occurs, the gas sensor is triggered.

[0016] Preferably, the air inlet end of the first tube body is provided with threads, and the sensing end of the air pressure sensor penetrates the outer wall of the first tube body and extends into the interior of the first tube body.

[0017] Preferably, the rotating rod is threadedly connected to the ring gear, and the bottom end of the rotating rod is connected to the valve.

[0018] Preferably, in the blocking structure, ventilation holes are provided on the tops of the connecting member and the rotating member, and the connecting member and the rotating member are provided with sliding grooves, and the connecting member and the rotating member are rotatably connected via the sliding grooves.

[0019] By adopting the above technical solution, the vents on the connecting member and the rotating member on the blocking structure are connected, and the connection or disconnection between the vents is controlled by the rotation of the rotating member.

[0020] Preferably, teeth are provided on the top of the outer surface of the rotating member, the second bevel teeth are meshed with the rotating member through the teeth, and the power supply is electrically connected to the air pressure sensor, the first motor, the second motor and the gas sensor.

[0021] By adopting the above technical solution, the second bevel gear can drive the rotating member to rotate on the connecting member.

[0022] Compared with the prior art, the present invention has the following beneficial effects: The special safety valve for gas storage tanks is provided with an air pressure sensor and a pressure relief structure. When the air pressure in the gas storage tank is too high, the air pressure sensor is triggered to start the pressure relief structure, and the pressure relief structure drives the valve to move and open the valve, thereby reducing the air pressure in the gas storage tank.

[0023] The special safety valve for gas storage tanks is provided with a gas sensor and a blocking structure. When the safety valve is in a closed state, if the gas sensor is triggered to activate the blocking structure, the gas outlet end of the safety valve is blocked by the blocking structure to prevent gas leakage in the gas storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the present invention; Figure 2 It is a front cross-sectional view of the internal structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle; Figure 5 For the present invention Figure 2 A magnified view of the structure at C in the middle; Figure 6 It is a three-dimensional diagram of the blocking structure of the present invention; Figure 7 It is a three-dimensional diagram of the rotating member of the present invention; Figure 8 It is a three-dimensional diagram of the connecting piece of the present invention; Fig. 9 A top view of the blocking structure of the present invention; Fig.10 It is a front cross-sectional view of the blocking structure of the present invention.

[0025] In the figure: 1. air inlet pipe; 10. first pipe body; 11. air pressure sensor; 12. valve; 2. pressure relief structure; 20. housing; 21. first motor; 22. first bevel gear; 23. ring gear; 24. handle; 25. rotating rod; 3. air outlet pipe; 30. second pipe body; 31. second motor; 32. blocking structure; 320. connecting piece; 321. rotating piece; 33. second bevel gear; 4. fixing piece; 40. fixing ring; 41. power supply; 42. gas sensor. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-10 , an embodiment provided by the present invention: a safety valve for a gas storage tank, comprising: An air inlet pipe 1, a pressure relief structure 2 is arranged on the top of the air inlet pipe 1, and an air outlet pipe 3 is arranged on the bottom of the air inlet pipe 1; The pressure relief structure 2 is provided with an automatic pressure relief part and a manual pressure relief part; An air outlet pipe 3 is rotatably connected to the air inlet pipe 1, and a fixing member 4 is provided on the outer surface of the air outlet pipe 3; The air inlet pipe 1 is connected to the air outlet pipe 3, wherein the pressure relief structure 2 can be an automatic pressure relief part and a manual pressure relief part. During normal use, the staff can open the valve through the pressure relief structure 2. If an emergency occurs, the pressure relief structure 2 can quickly close the valve. If the air pressure in the air storage tank is too high, the pressure relief structure 2 can realize the pressure relief operation.

[0028] In this embodiment, the air intake pipe 1 includes a first tube body 10, and an air pressure sensor 11 is arranged on the outer surface of the first tube body 10 near the air intake end, and a valve 12 is arranged inside the first tube body 10 near the air outlet end. The air pressure sensor 11 can detect the air pressure inside the air intake pipe 1 in real time.

[0029] In this embodiment, the pressure relief structure 2 includes a shell 20, and a first motor 21 and a handle 24 are provided on the outer surface of the shell 20. The shell 20 is provided with a first bevel gear 22 through the first motor 21 and the handle 24. A ring gear 23 is rotatably installed inside the shell 20, and a rotating rod 25 is rotatably provided at the middle position of the ring gear 23. The first bevel gear 22 is meshed with the ring gear 23. The first motor 21 and the handle 24 can drive the first bevel gear 22 to rotate, thereby driving the ring gear 23 to rotate, so that the rotating rod 25 can move inside the ring gear 23.

[0030] In this embodiment, the air outlet pipe fitting 3 includes a second tube body 30, a second motor 31 is provided on the outer surface of the second tube body 30, a second bevel gear 33 is provided at the output end of the second motor 31, and a blocking structure 32 is provided inside the second tube body 30. The blocking structure 32 can block the air outlet end of the air outlet pipe fitting 3 to prevent leakage of gas in the gas storage tank.

[0031] In this embodiment, the blocking structure 32 includes a connecting member 320 . The connecting member 320 is disposed inside the second tube body 30 . A rotating member 321 is rotatably mounted on the top of the connecting member 320 .

[0032] In this embodiment, the fixing member 4 includes a fixing ring 40, and the outer surface of the second tube body 30 is provided with a fixing ring 40. The second tube body 30 is installed with a power supply 41 and a gas sensor 42 through the fixing ring 40. When the valve 12 cannot completely block the gas and leakage occurs, the gas sensor 42 is triggered by induction.

[0033] In this embodiment, the air inlet end of the first tube body 10 is provided with threads, and the sensing end of the air pressure sensor 11 penetrates the outer wall of the first tube body 10 and extends into the interior of the first tube body 10 .

[0034] In this embodiment, the rotating rod 25 is threadedly connected to the ring gear 23 , and the bottom end of the rotating rod 25 is connected to the valve 12 .

[0035] In this embodiment, ventilation holes are provided on the top of the connecting member 320 and the rotating member 321 in the blocking structure 32, and the connecting member 320 and the rotating member 321 are both provided with sliding grooves. The connecting member 320 and the rotating member 321 are rotatably connected through the sliding grooves, and the ventilation holes on the connecting member 320 and the rotating member 321 on the blocking structure 32 are connected, and the connection or disconnection between the ventilation holes is controlled by the rotation of the rotating member 321.

[0036] In this embodiment, teeth are provided on the top of the outer surface of the rotating member 321, and the second bevel teeth 33 are meshed with the rotating member 321 through the teeth. The power supply 41 is electrically connected to the air pressure sensor 11, the first motor 21, the second motor 31 and the gas sensor 42, and the rotating member 321 can be driven to rotate on the connecting member 320 through the second bevel teeth 33.

[0037] Embodiment 1, as Figure 1-5 As shown, the air inlet pipe fitting 1 and the air outlet pipe fitting 3 are connected. During the use of the safety valve, the staff can open the valve manually. When the safety valve is in the closed position, if the air pressure in the gas tank is too high, the air pressure sensor 11 is triggered to start the first motor 21. The first motor 21 drives the ring gear 23 to rotate, thereby driving the rotating rod 25 to move in the ring gear 23, so that the valve 12 can move accordingly to achieve the effect of pressure relief. If the gas in the gas tank leaks when the valve 12 fails, the gas sensor 42 is triggered, so that the second motor 31 can drive the blocking structure 32 to block the air outlet pipe fitting 3 to prevent the gas in the gas tank from leaking.

[0038] Embodiment 2, as Figure 6-10As shown, the rotation of the output end of the second motor 31 drives the second bevel gear 33 to rotate, thereby driving the rotating member 321 to rotate on the connecting member 320. During normal use of the safety valve, the air holes on the connecting member 320 and the rotating member 321 are connected. If the safety valve leaks, the second motor 31 drives the rotating member 321 to rotate on the connecting member 320, so that the air holes on the connecting member 320 and the rotating member 321 are staggered, thereby blocking the air outlet pipe 3.

[0039] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or scope of the present invention. Therefore, the embodiments of the present invention are exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A safety valve for gas storage tanks, characterized in that: include: An air intake pipe (1), wherein a pressure relief structure (2) is arranged at the top of the air intake pipe (1), and an air outlet pipe (3) is arranged at the bottom of the air intake pipe (1); A pressure relief structure (2), wherein the pressure relief structure (2) is provided with an automatic pressure relief component and a manual pressure relief component; An air outlet pipe member (3) is rotatably connected to the air inlet pipe member (1), and a fixing member (4) is provided on the outer surface of the air outlet pipe member (3).

2. A safety valve for gas storage tanks according to claim 1, characterized in that: The air intake pipe (1) comprises a first pipe body (10), an air pressure sensor (11) is arranged on the outer surface of the first pipe body (10) close to the air intake end, and a valve (12) is arranged inside the first pipe body (10) close to the air outlet end.

3. A safety valve for gas storage tanks according to claim 2, characterized in that: The pressure relief structure (2) comprises a housing (20), the outer surface of which is provided with a first motor (21) and a handle (24), the housing (20) being provided with a first bevel gear (22) via the first motor (21) and the handle (24), a ring gear (23) being rotatably mounted inside the housing (20), a rotating rod (25) being rotatably mounted at a middle position of the ring gear (23), and the first bevel gear (22) being meshed with the ring gear (23).

4. A safety valve for gas storage tanks according to claim 3, characterized in that: The air outlet pipe (3) comprises a second pipe body (30), a second motor (31) is provided on the outer surface of the second pipe body (30), a second bevel gear (33) is provided at the output end of the second motor (31), and a blocking structure (32) is provided inside the second pipe body (30).

5. A safety valve for gas storage tanks according to claim 4, characterized in that: The blocking structure (32) comprises a connecting piece (320), wherein the connecting piece (320) is arranged inside the second tube body (30), and a rotating piece (321) is rotatably mounted on the top of the connecting piece (320).

6. A safety valve for gas storage tanks according to claim 4, characterized in that: The fixing member (4) comprises a fixing ring (40), the outer surface of the second tube body (30) is provided with a fixing ring (40), and the second tube body (30) is installed with a power source (41) and a gas sensor (42) via the fixing ring (40).

7. A safety valve for gas storage tanks according to claim 2, characterized in that: The air inlet end of the first tube body (10) is provided with a thread, and the sensing end of the air pressure sensor (11) penetrates the outer wall of the first tube body (10) and extends into the interior of the first tube body (10).

8. A safety valve for gas storage tanks according to claim 3, characterized in that: The rotating rod (25) is threadedly connected to the ring gear (23), and the bottom end of the rotating rod (25) is connected to the valve (12).

9. A safety valve for gas storage tanks according to claim 5, characterized in that: The connecting member (320) and the rotating member (321) in the blocking structure (32) are both provided with ventilation holes at the top, and the connecting member (320) and the rotating member (321) are both provided with sliding grooves, and the connecting member (320) and the rotating member (321) are rotatably connected via the sliding grooves.

10. A safety valve for gas storage tanks according to claim 5, characterized in that: The top of the outer surface of the rotating member (321) is provided with teeth, and the second bevel teeth (33) are meshed with the rotating member (321) via the teeth. The power source (41) is electrically connected to the air pressure sensor (11), the first motor (21), the second motor (31) and the gas sensor (42).

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