A gas cylinder special explosion-proof device with alarm function

Abstract

The utility model relates to a special anti -explosion device of gas cylinder with alarm function. Including gas cylinder pressure -relief valve body, fastening nut, bursting disc and signal line, gas cylinder pressure -relief valve body can be dismantled and installed in the pressure release port of gas cylinder, be provided with bursting disc in the gas cylinder pressure -relief valve body, the fastening nut can be dismantled and installed in the gas cylinder pressure -relief valve body, and the bursting disc is fixed in the gas cylinder pressure -relief valve body through the fastening nut, is provided with signal line on the fastening nut, and the fastening nut is pasted with label paper, the utility model is provided with two communication holes and pressure -relief holes, when the fragment produced after the bursting disc bursts is blocked in the through -hole, forms the pressure -relief channel through the communication hole cooperation pressure -relief hole two, can play the pressure -relief effect.

Description

Technical Field

[0001] This utility model relates to the technical field of gas cylinder explosion-proof devices, specifically to a gas cylinder-specific explosion-proof device with alarm function. Background Technology

[0002] Rupture disc safety devices are differential pressure driven, non-automatically closing emergency overpressure relief devices, primarily used to protect pressure vessels, pipelines, or other closed systems from damage caused by excessive overpressure or vacuum. Rupture disc safety devices are now widely used in industries such as chemical, pharmaceutical, environmental protection, steel, and power to ensure safe production operations.

[0003] For depressurizing gas cylinders on long-tube trailers and tubular containers, the current technology typically uses a pressure relief valve installed at the pressure vent. When the gas pressure inside the cylinder rises abnormally for some reason, reaching or exceeding the valve's set opening pressure, the valve automatically opens to release the pressure. However, achieving a completely leak-free pressure relief valve, especially one with a metal sealing surface, is extremely difficult. Leakage in the pressure relief valve means continuous loss of the gas medium inside the cylinder.

[0004] Furthermore, a pressure relief valve can automatically release pressure from the ultra-high pressure cylinder when it reaches a specified value, thus preventing the cylinder from rupturing. However, fragments from the rupture disc can enter the pressure relief port along with the flowing gas, often causing blockage and preventing the valve from releasing pressure properly. Given these shortcomings, it is necessary to design a dedicated explosion-proof device for gas cylinders with an alarm function. Utility Model Content

[0005] The purpose of this invention is to provide a special explosion-proof device for gas cylinders with an alarm function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas cylinder explosion-proof device with alarm function, comprising a gas cylinder pressure relief valve body, a fastening nut, a rupture disc, and a signal line. The gas cylinder pressure relief valve body is detachably installed in the pressure relief port of the gas cylinder. A rupture disc is provided inside the gas cylinder pressure relief valve body. A fastening nut is detachably installed inside the gas cylinder pressure relief valve body. The rupture disc is fixed to the gas cylinder pressure relief valve body by the fastening nut. A signal line is provided on the fastening nut. A label is affixed to the fastening nut.

[0007] Preferably, the gas cylinder pressure relief valve body includes a screw and a nut. The top of the screw is fitted with a nut integrally formed with the screw. A pressure relief hole 1 is formed through the screw. A stepped hole is formed on the nut. The stepped hole is connected to the pressure relief hole 1. Several pressure relief holes 2 that are connected internally and externally are formed on the inner wall of the stepped hole. The inner wall of the stepped hole is provided with internal threads.

[0008] Preferably, a rupture disc is provided in the stepped hole of the nut, a sealing washer one is provided between the rupture disc and the nut, a sealing washer two is provided between the rupture disc and the fastening nut, and an annular groove is provided at the bottom of the nut, with a sealing washer three installed in the annular groove.

[0009] Preferably, the fastening nut has an external thread on its outer periphery, a through hole in the middle of the fastening nut, and a plurality of through holes on the inner wall of the through hole.

[0010] Preferably, the top of the fastening nut has a groove, an L-shaped tool holder is installed inside the groove, a metal blade is installed on the L-shaped tool holder, and the top of the fastening nut also has a wire passage groove, an L-shaped clamping plate is installed inside the wire passage groove.

[0011] Preferably, one end of the signal line is connected to the lead-out end of the wire breakage alarm, which is connected to a buzzer. The other end of the signal line is wound around the outer periphery of the metal blade and led out along the wire groove to connect to the input end of the wire breakage alarm. A cable tie is installed on the signal line.

[0012] Compared with the prior art, the technical solution provided by this utility model has at least the following technical effects or advantages:

[0013] This invention effectively prevents gas leakage from the gas cylinder by incorporating three sealing washers: a first sealing washer, a second sealing washer, and a third sealing washer. It also features a connecting hole and a second pressure relief hole. When fragments from the rupture disc cause blockage in the connecting hole, the connecting hole and the second pressure relief hole form a pressure relief channel, ensuring the normal pressure relief of the gas cylinder's pressure relief valve body. Furthermore, by rotating the fastening nut, the external thread of the fastening nut engages with the internal thread of the stepped hole, thus securing the valve. Conversely, rotating the fastening nut in the opposite direction disengages the end of the fastening nut from the nut, allowing the rupture disc to be removed. This design facilitates the installation and removal of the rupture disc, making it easy to replace. Therefore, when repairing the gas cylinder pressure relief valve, it is not necessary to replace the entire valve, thus reducing maintenance costs. This invention includes a signal line. When the gas pressure inside the cylinder abnormally rises for some reason, reaching or exceeding the rupture disc's set opening pressure value, the rupture disc breaks, releasing the pressure. The fragments and airflow move the signal line, causing the metal blade to cut the signal line. This creates an open circuit between the signal line and the break-circuit alarm, activating the alarm circuit and sending a control signal to activate the buzzer. The alarm is rapid and accurate. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is an exploded view of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the nut structure in this utility model.

[0018] In the attached image:

[0019] 1. Gas cylinder pressure relief valve body; 101. Screw; 102. Nut; 103. Pressure relief hole one; 104. Stepped hole; 105. Pressure relief hole two; 106. Sealing washer one; 107. Sealing washer two; 108. Annular groove; 109. Sealing washer three; 2. Fastening nut; 3. Rupture disc; 4. Signal line; 5. Label paper; 201. Through hole; 202. Connecting hole; 203. Groove; 204. L-shaped knife holder; 205. Through groove; 206. L-shaped clamping plate; 207. Cable tie. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Please see Figure 1-3 As shown, this utility model provides a technical solution: a special explosion-proof device for gas cylinders with alarm function, including a gas cylinder pressure relief valve body 1, a fastening nut 2, a rupture disc 3, and a signal line 4. The gas cylinder pressure relief valve body 1 is detachably installed in the pressure relief port of the gas cylinder. A rupture disc 3 is provided inside the gas cylinder pressure relief valve body 1. A fastening nut 2 is detachably installed inside the gas cylinder pressure relief valve body 1. The rupture disc 3 is fixed inside the gas cylinder pressure relief valve body 1 by the fastening nut 2. A signal line 4 is provided on the fastening nut 2. A label 5 is affixed to the fastening nut 2.

[0022] The gas cylinder pressure relief valve body 1 in this embodiment includes a screw 101 and a nut 102. The top end of the screw 101 is fitted with a nut 102 integrally formed with the screw 101. A pressure relief hole 103 penetrating the screw 101 is provided on the screw 101. A stepped hole 104 is provided on the nut 102, which is connected to the pressure relief hole 103. Several pressure relief holes 105 penetrating both inside and outside are provided on the inner wall of the stepped hole 104. An internal thread is provided on the inner wall of the stepped hole 104. A rupture disc 3 is provided in the stepped hole 104 of the nut 102. A sealing washer 106 is provided between the rupture disc 3 and the nut 102. A sealing washer 107 is provided between the rupture disc 3 and the fastening nut 2. An annular groove 108 is provided at the bottom of the nut 102, and a sealing washer 109 is installed in the annular groove 108. By providing sealing gasket 106, sealing gasket 2 107 and sealing gasket 3 109, the gas inside the gas cylinder can be effectively prevented from leaking to the outside. The inner wall of the pressure relief port of the gas cylinder is provided with threads that match the screw 101.

[0023] In this embodiment, the fastening nut 2 has an external thread on its outer periphery. A through hole 201 is formed in the middle of the fastening nut 2, and several through holes 202 are formed on the inner wall of the through hole 201. A groove 203 is formed at the top of the fastening nut 2, and an L-shaped tool holder 204 is installed inside the groove 203. A metal blade is installed on the L-shaped tool holder 204. A wire groove 205 is also formed at the top of the fastening nut 2. The signal line 4 is placed in the wire groove 205 and the groove 203. A label 5 is affixed to the fastening nut 2, which does not affect the overall aesthetics of the signal line 4 assembly and also protects the signal line 4, thus ensuring signal stability. An L-shaped retaining plate 206 is installed inside the wire groove 205. When fragments from the rupture disc cause blockage in the through hole 201 after detonation, a pressure relief channel is formed through the through holes 202 and the pressure relief hole 105, which can relieve pressure.

[0024] In this embodiment, one end of the signal line 4 is connected to the lead-out end of the wire breakage alarm, which is connected to the buzzer. The other end of the signal line 4 is wrapped around the outer circumference of the metal blade and led out along the direction of the through groove 205 to connect to the input end of the wire breakage alarm. A cable tie 207 is installed on the signal line 4 to bind the signal line 4 and effectively prevent the signal line 4 from slipping.

[0025] The working principle of this utility model:

[0026] During installation, place the sealing washer 106, rupture disc 3, and sealing washer 2 107 sequentially into the stepped hole 104. Then, place the fastening nut 2 on the stepped hole 104 and rotate it so that the external thread of the fastening nut 2 engages with the internal thread of the stepped hole 104, thereby fixing the rupture disc 3. Conversely, rotate the fastening nut 2 in the opposite direction to disengage the end of the fastening nut 2 from the nut 102, and then remove the rupture disc 3. This setup facilitates the installation and removal of the rupture disc, making it easy to replace. Therefore, when repairing the gas cylinder pressure relief valve, it is not necessary to replace the entire gas cylinder pressure relief valve, thus reducing the maintenance cost of the gas cylinder pressure relief valve.

[0027] When the gas pressure inside the cylinder rises abnormally for some reason, reaching or exceeding the opening pressure value set by the rupture disc, the rupture disc breaks, releasing the pressure. The fragments and airflow move the signal line 4, causing the metal blade to cut the signal line 4. The signal line 4 is then in an open circuit state with the disconnected alarm, the alarm circuit is connected, a control signal is sent, and the buzzer is activated to start the alarm. The alarm is fast and accurate.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A special explosion-proof device for gas cylinders with alarm function, characterized in that: The device includes a gas cylinder pressure relief valve body (1), a fastening nut (2), a rupture disc (3), and a signal line (4). The gas cylinder pressure relief valve body (1) is detachably installed at the pressure relief port of the gas cylinder. A rupture disc (3) is installed inside the gas cylinder pressure relief valve body (1). A fastening nut (2) is detachably installed inside the gas cylinder pressure relief valve body (1). The rupture disc (3) is fixed inside the gas cylinder pressure relief valve body (1) by the fastening nut (2). A signal line (4) is installed on the fastening nut (2). A label (5) is attached to the fastening nut (2).

2. The explosion-proof device for gas cylinders with alarm function according to claim 1, characterized in that: The gas cylinder pressure relief valve body (1) includes a screw (101) and a nut (102). The top of the screw (101) is equipped with a nut (102) integrally formed with the screw (101). A pressure relief hole (103) penetrating the screw (101) is provided on the screw (101). A stepped hole (104) is provided on the nut (102). The stepped hole (104) is connected to the pressure relief hole (103). Several pressure relief holes (105) penetrating both inside and outside are provided on the inner wall of the stepped hole (104). An internal thread is provided on the inner wall of the stepped hole (104).

3. The explosion-proof device for gas cylinders with alarm function according to claim 2, characterized in that: A rupture disc (3) is provided in the stepped hole (104) of the nut (102). A sealing washer (106) is provided between the rupture disc (3) and the nut (102). A sealing washer (2) (107) is provided between the rupture disc (3) and the fastening nut (2). An annular groove (108) is provided at the bottom of the nut (102). A sealing washer (3) (109) is installed in the annular groove (108).

4. The explosion-proof device for gas cylinders with alarm function according to claim 1, characterized in that: The fastening nut (2) has an external thread on its outer periphery, and a through hole (201) is provided in the middle of the fastening nut (2). Several through holes (202) are provided on the inner wall of the through hole (201).

5. The explosion-proof device for gas cylinders with alarm function according to claim 1, characterized in that: The top of the fastening nut (2) has a groove (203), an L-shaped tool holder (204) is installed inside the groove (203), a metal blade is installed on the L-shaped tool holder (204), and a wire groove (205) is also provided at the top of the fastening nut (2), an L-shaped card plate (206) is installed inside the wire groove (205).

6. The explosion-proof device for gas cylinders with alarm function according to claim 1, characterized in that: One end of the signal line (4) is connected to the lead-out end of the wire break alarm, which is connected to the buzzer. The other end of the signal line (4) is wrapped around the outer periphery of the metal blade and led out along the direction of the through groove (205) to be connected to the input end of the wire break alarm. A cable tie (207) is installed on the signal line (4).

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