Explosion-proof device of hydrogen dispenser

Abstract

The utility model provides an explosion-proof device of a hydrogen dispenser, which relates to the technical field of hydrogen dispensers and is characterized in that explosion-proof components are fixed at two ends of a dispenser body. According to the utility model, the lower arc plate and the upper arc plate are sleeved at the joint of the connecting pipe and the gas conveying pipe and are locked through the bolt and the nut, and the sealing performance is ensured under the action of the sealing gasket, so that additional sealing protection is provided for the joint of the connecting pipe and the gas conveying pipe through the upper arc plate and the lower arc plate; meanwhile, when a hydrogen sensor in overload is used for monitoring hydrogen leakage at the joint, a first valve and a third valve can be started, a connecting pipe and a gas conveying pipe are blocked in time, an alarm is started to inform a worker to handle the situation in time, and the safety of the worker is improved. When hydrogen leakage occurs, a response can be quickly made and dangerous situations can be controlled, hydrogen leakage is avoided, and the explosion risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen gas filling machine technical field especially relates to a kind of explosion-proof device of hydrogen gas filling machine. BACKGROUND

[0002] Hydrogen is the main industrial raw material, also the most important industrial gas and special gas, has wide application in petroleum chemical industry, electronic industry, metallurgical industry, food processing, float glass, fine organic synthesis, aerospace etc..Meanwhile, hydrogen is an ideal secondary energy, and hydrogen is the cleanest fuel, and the combustion product of hydrogen is water, which does not pollute the environment, and hydrogen gas filling machine is one of the common equipment in the process of hydrogen use.

[0003] In the prior art, hydrogen gas filling machine is usually connected by pipeline for gas transmission or filling, but the pipeline connection is usually sealed by sealing gasket at the interface, and with the increase of use time, the sealing gasket will be worn due to external factors, resulting in reduced sealing performance, thereby causing hydrogen leakage and explosion risk. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of explosion-proof device of hydrogen gas filling machine, to solve the problem that in the prior art, hydrogen gas filling machine is usually connected by pipeline for gas transmission or filling, but the pipeline connection is usually sealed by sealing gasket at the interface, and with the increase of use time, the sealing gasket will be worn due to external factors, resulting in reduced sealing performance, thereby causing hydrogen leakage and explosion risk.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of explosion-proof device of hydrogen gas filling machine, the both ends of gas filling machine body are fixed with explosion-proof assembly;

[0006] The explosion-proof assembly includes connecting pipe and lower arc plate, the outer surface of the lower arc plate is hingedly connected with upper arc plate, the top of the upper arc plate is fixedly connected with hydrogen gas sensor, the outer surface of the upper arc plate is symmetrically provided with mounting groove, the inner surface of two mounting grooves is fixedly connected with rotating rod, the outer surface of two rotating rods is rotatably connected with rotating block, the outer surface of two rotating blocks is fixedly connected with bolt, the outer surface of two bolts is threadedly connected with nut, the bottom of the upper arc plate and the top of the upper arc plate are provided with sealing groove, and the inner surface of the sealing groove is provided with sealing gasket.

[0007] Preferably, one end of the connecting pipe is fixedly connected with gas transmission pipe, and the outer surface of the lower arc plate and the upper arc plate cooperates with the outer surface of the gas transmission pipe and the connecting pipe.

[0008] Preferably, the outer surface of the connecting pipe is provided with first valve, and the bottom of the lower arc plate is fixedly connected with gas outlet pipe.

[0009] Preferably, the outer surface of the air outlet pipe is provided with a second valve, and the outer surface of the air conveying pipe is provided with a third valve.

[0010] Preferably, the top of the air outlet pipe is fixedly connected with a plurality of dispersion pipes, and the top of the air inflator body is fixedly connected with an alarm.

[0011] Preferably, the outer surface of the lower arc plate is symmetrically provided with an avoiding groove, and the two avoiding grooves are matched with two bolts respectively, and one end of the two connecting pipes is fixedly connected with the output end and the input end of the air inflator body respectively.

[0012] Compared with the prior art, the hydrogen inflator explosion-proof device has the advantages and positive effects that:

[0013] 1、In the hydrogen inflator explosion-proof device, the lower arc plate and the upper arc plate are sleeved at the connection position of the connecting pipe and the air conveying pipe, are locked through the bolts and the nuts, and the sealing property is ensured under the action of the sealing gasket, so that the connection position of the connecting pipe and the air conveying pipe is provided with additional sealing protection through the lower arc plate and the upper arc plate, and the overall integrated arrangement makes the installation and dismounting more convenient, and when the hydrogen gas leakage occurs at the connection position, the first valve and the third valve are started through the use of the overload hydrogen gas sensor, the connecting pipe and the air conveying pipe are timely blocked, the alarm is started to timely inform the staff to come to handle, the hydrogen gas leakage can be responded and controlled rapidly when the hydrogen gas leakage occurs, the hydrogen gas leakage is avoided, and the explosion risk is reduced.

[0014] 2、In the hydrogen inflator explosion-proof device, when the staff needs to maintain the leakage position, the second valve is opened, air in the lower arc plate and the upper arc plate is discharged through the plurality of dispersion pipes outside the air outlet pipe, the hydrogen gas is reduced, and the explosion risk is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 a perspective view of the hydrogen inflator explosion-proof device is provided for the hydrogen inflator explosion-proof device;

[0016] Figure 2 a perspective view of the hydrogen inflator explosion-proof device is provided for the hydrogen inflator explosion-proof device;

[0017] Figure 3 a perspective view of the hydrogen inflator explosion-proof device is provided for the hydrogen inflator explosion-proof device;

[0018] Figure 4 a perspective view of the hydrogen inflator explosion-proof device is provided for the hydrogen inflator explosion-proof device;

[0019] Legend: 1. Gas dispenser body; 2. Explosion-proof components; 201. Connecting pipe; 202. First valve; 203. Upper arc plate; 204. Hydrogen sensor; 205. Lower arc plate; 206. Gas outlet pipe; 207. Dispersion pipe; 208. Second valve; 209. Third valve; 210. Bolt; 211. Sealing gasket; 212. Sealing groove; 213. Rotating block; 214. Nut; 215. Clearance groove; 216. Rotating rod; 217. Mounting groove; 218. Gas delivery pipe. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, such as Figures 1-4 As shown, this utility model provides an explosion-proof device for a hydrogen dispenser, with explosion-proof components 2 fixed at both ends of the dispenser body 1;

[0023] The explosion-proof component 2 includes a connecting pipe 201 and a lower arc plate 205. An upper arc plate 203 is hinged to the outer surface of the lower arc plate 205. A hydrogen sensor 204 is fixedly connected to the top of the upper arc plate 203. The outer surface of the upper arc plate 203 has symmetrically arranged mounting grooves 217. Rotating rods 216 are fixedly connected to the inner surfaces of both mounting grooves 217. Rotating blocks 213 are rotatably connected to the outer surfaces of both rotating rods 216. Bolts 210 are fixedly connected to the outer surfaces of both rotating blocks 213. Nuts 214 are threaded onto the outer surfaces of both bolts 210. Sealing grooves 212 are provided at the bottom and top of the upper arc plate 203. The inner surface of the sealing groove 212 is provided with sealing gaskets 211. One end of the connecting pipe 201 is fixedly connected to the gas supply pipe 218. The lower arc plate 205 and the upper arc plate 203 cooperate with the outer surfaces of the gas supply pipe 218 and the connecting pipe 201. The outer surface of the connecting pipe 201 is provided with a first valve 202. The outer surface of the gas supply pipe 218 is provided with a third valve 209. The outer surface of the lower arc plate 205 is symmetrically provided with clearance grooves 215. The two clearance grooves 215 are respectively cooperated with two bolts 210. One end of the two connecting pipes 201 is fixedly connected to the output end and the input end of the gas dispenser body 1, respectively. An alarm 3 is fixedly connected to the top of the gas dispenser body 1.

[0024] The effect achieved by the whole embodiment 1 is that when one of the gas conveying pipes 218 is the gas inlet end and the other is the gas outlet end, after the connecting pipe 201 and the gas conveying pipe 218 are connected, the sealing gasket 211 is installed on the upper arc plate 203 and the lower arc plate 205 along the sealing groove 212, the lower arc plate 205 is attached along the outer side of the connecting pipe 201 and the gas conveying pipe 218, then the upper arc plate 203 is rotated to align with the lower arc plate 205, and then the bolt 210 is rotated to drive the rotating block 213 to rotate along the rotating rod 216 and the installation groove 217, so that the bolt 210 moves to the avoiding groove 215, and then it is tightened through the nut 214. After tightening, the two sealing gaskets 211 are deformed to fill the gap between the lower arc plate 205 and the upper arc plate 203, ensuring the sealing, thereby providing additional sealing protection for the connection between the connecting pipe 201 and the gas conveying pipe 218 through the upper arc plate 203 and the lower arc plate 205, and the whole is integrally arranged, so that the installation and disassembly are relatively convenient. At the same time, during the input or output of hydrogen gas of the connecting pipe 201 and the gas conveying pipe 218, the hydrogen gas sensor 204 can monitor the inside of the lower arc plate 205 and the upper arc plate 203 in real time. When a gap appears at the connection, hydrogen gas will flow into the inside of the lower arc plate 205 and the upper arc plate 203. When the hydrogen gas sensor 204 detects that the internal hydrogen concentration exceeds the set threshold, it will transmit a signal to the external control, and the controller receives and processes it to start the first valve 202 and the third valve 209 to seal the connecting pipe 201 and the gas conveying pipe 218 in time, and the alarm 3 is started to notify the staff in time to handle it, which can quickly respond and control dangerous situations when hydrogen leakage occurs, avoid hydrogen leakage, and reduce the risk of explosion.

[0025] As shown in embodiment 2, Figures 1-4 The top of the gas outlet pipe 206 is fixedly connected with a plurality of dispersion pipes 207, the bottom of the lower arc plate 205 is fixedly connected with the gas outlet pipe 206, and the outer surface of the gas outlet pipe 206 is provided with the second valve 208.

[0026] The effect achieved by the whole embodiment 2 is that when the staff needs to repair the leakage, the second valve 208 can be opened to make the air inside the lower arc plate 205 and the upper arc plate 203 dispersedly discharged through the plurality of dispersion pipes 207 outside the gas outlet pipe 206, thereby reducing the aggregation of hydrogen and reducing the risk of explosion.

[0027] The first valve 202 and the third valve 209 are solenoid valves, and the first valve 202, the third valve 209, the hydrogen gas sensor 204, and the alarm 3 are electrically connected with the external control. The hydrogen gas sensor 204 can pre-set the concentration threshold during use. The model of the gas dispenser body 1 is H2Station350, which is a mature technology.

[0028] Working principle: when the connecting pipe 201 and the gas pipe 218 are connected, the lower arc plate 205 is attached along the outer side of the connecting pipe 201 and the gas pipe 218, then the upper arc plate 203 is rotated to align with the lower arc plate 205, then the bolt 210 is rotated to drive the rotating block 213 to rotate along the rotating rod 216 and the mounting groove 217, so that the bolt 210 moves to the avoiding groove 215, then it is tightened through the nut 214, and after tightening, the two sealing gaskets 211 are deformed to fill the gap between the lower arc plate 205 and the upper arc plate 203, ensuring the sealing, thereby providing additional sealing protection for the connection between the connecting pipe 201 and the gas pipe 218 through the upper arc plate 203 and the lower arc plate 205, and the whole is integrally arranged, so that the installation and disassembly are relatively convenient, and at the same time, in the process of inputting or outputting hydrogen from the connecting pipe 201 and the gas pipe 218, the hydrogen sensor 204 can monitor the inside of the lower arc plate 205 and the upper arc plate 203 in real time, when the gap appears at the connection, the hydrogen flows into the inside of the lower arc plate 205 and the upper arc plate 203, when the hydrogen sensor 204 detects that the internal hydrogen concentration exceeds the set threshold, it will transmit a signal to the external control, the controller receives and processes, so that the first valve 202 and the third valve 209 are started, and the connecting pipe 201 and the gas pipe 218 are timely blocked, and the alarm 3 is started to timely inform the staff to come to handle, which can quickly respond and control the dangerous situation when hydrogen leakage occurs, when the staff needs to repair the leakage, the second valve 208 can be opened, so that the air in the inside of the lower arc plate 205 and the upper arc plate 203 is dispersed and discharged through the multiple dispersion pipes 207 outside the gas pipe 206, reducing the risk of explosion.

[0029] The above is only a preferred embodiment of the present application, and does not limit other forms of the present application. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the protection scope of the present application.

Claims

1. An explosion-proof device for a hydrogen gas dispenser, characterized by: Both ends of the air compressor body (1) are fixed with explosion-proof assemblies (2); The explosion-proof assembly (2) comprises a connecting pipe (201) and a lower arc plate (205), the outer surface of the lower arc plate (205) is hingedly connected with an upper arc plate (203), the top of the upper arc plate (203) is fixedly connected with a hydrogen sensor (204), the outer surface of the upper arc plate (203) is symmetrically provided with mounting grooves (217), the inner surfaces of the two mounting grooves (217) are fixedly connected with rotating rods (216), the outer surfaces of the two rotating rods (216) are rotatably connected with rotating blocks (213), the outer surfaces of the two rotating blocks (213) are fixedly connected with bolts (210), the outer surfaces of the two bolts (210) are threadedly connected with nuts (214), the bottom of the upper arc plate (203) and the top of the upper arc plate (203) are provided with sealing grooves (212), and the inner surfaces of the sealing grooves (212) are provided with sealing gaskets (211).

2. The explosion-proof device of a hydrogen gas dispenser according to claim 1, wherein: One end of the connecting pipe (201) is fixedly connected with a gas conveying pipe (218), and the outer surfaces of the lower arc plate (205) and the upper arc plate (203) are matched with the outer surfaces of the gas conveying pipe (218) and the connecting pipe (201).

3. The explosion-proof device of a hydrogen gas dispenser according to claim 2, characterized by: The outer surface of the connecting pipe (201) is provided with a first valve (202), and the bottom of the lower arc plate (205) is fixedly connected with a gas outlet pipe (206).

4. The explosion-proof device of a hydrogen gas dispenser according to claim 3, wherein: The outer surface of the gas outlet pipe (206) is provided with a second valve (208), and the outer surface of the gas conveying pipe (218) is provided with a third valve (209).

5. The explosion-proof device of the hydrogen gas dispenser according to claim 3, wherein: The top of the gas outlet pipe (206) is fixedly connected with a plurality of dispersion pipes (207), and the top of the air compressor body (1) is fixedly connected with an alarm (3).

6. The explosion-proof device of a hydrogen gas dispenser according to claim 1, wherein: The outer surface of the lower arc plate (205) is symmetrically provided with avoiding grooves (215), the two avoiding grooves (215) are matched with the two bolts (210) respectively, and one end of the two connecting pipes (201) is fixedly connected with the output end and the input end of the air compressor body (1) respectively.

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