Explosion-proof gas storage tank of dust removal system

Abstract

The utility model discloses an anti-explosion gas storage tank of a dust removal system. The gas storage tank comprises a gas storage tank main body, an anti-explosion device and an accessory device, the explosion-proof device is arranged at the upper end of the gas storage tank main body, and the accessory device is fixedly connected to the gas storage tank main body; the explosion-proof device comprises an explosion venting pipe, a rupture disk, a lower flange, an upper flange and a bolt set. The explosion venting pipe is welded at the top end of the upper sealing head; the lower flange is welded on the explosion venting pipe; the rupture disk is in a positive arch notch groove shape, and the lower flange and the upper flange are connected through the bolt set and clamp the rupture disk. When the gas storage tank explodes due to chemical reaction, the internal pressure rises sharply, and the rupture disk in the anti-explosion system is broken through, so that the internal pressure gas is released quickly, and the whole gas storage tank is protected. The explosion-proof gas storage tank is reasonable in structure, good in explosion-proof effect and capable of effectively preventing the gas storage tank from being broken by rapidly-increased gas pressure.

Description

Technical Field

[0001] The invention relates to an explosion-proof gas storage tank, in particular to an explosion-proof gas storage tank for a dust removal system. Background Art

[0002] Gas tanks are used to store gas and stabilize the system pressure. According to the pressure they can withstand, they can be divided into high-pressure gas tanks, low-pressure gas tanks and normal-pressure gas tanks. According to the material of the gas tanks, they can be divided into carbon steel gas tanks, low-alloy steel gas tanks and stainless steel gas tanks. Gas tanks are generally composed of parts and components such as cylinders, heads, flanges, pipes, sealing elements and supports.

[0003] In the graphite industry, the carbon monoxide content in the air of the production workshop is high, and there are many surrounding equipment and high working temperatures. When the carbon monoxide concentration in the gas tank reaches more than 12.5%, it may cause an explosion. In addition, because the filtration accuracy of air filters is generally insufficient, the filtration accuracy for dust with a particle size below 3μm is usually only 98%, resulting in a high dust concentration in the gas tank. If the gas tank is operated in this working condition for a long time, it may cause carbon deposition on the inner wall of the gas tank. When the carbon deposition layer reaches a certain level, the carbon deposition will enter a self-heating state and cause spontaneous combustion, causing an explosion. In addition, there are corrosive gases in the gas tank during the production process, which may cause corrosion of the gas tank, so high requirements are placed on the explosion-proof and corrosion-resistant properties of the gas tank. Therefore, it is urgent to develop a gas tank with explosion-proof and corrosion-resistant properties.

[0004] To this end, the present invention provides an explosion-proof gas storage tank for a dust removal system to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dust removal system explosion-proof gas storage tank, the gas storage tank comprises a gas storage tank body, an explosion-proof device and an auxiliary device; the explosion-proof device is placed at the upper end of the gas storage tank body, and the auxiliary device is fixed to the gas storage tank body; the explosion-proof device comprises: an explosion-proof pipe, a bursting disc, a lower flange, an upper flange and a bolt group; the explosion-proof pipe is welded to the top end of the upper head, and the lower flange is welded to the explosion-proof pipe; the bursting disc is a positive arch groove type, and the lower flange and the upper flange are connected by a bolt group to clamp the bursting disc.

[0007] The gas storage tank body includes: a cylinder, an upper head, a lower head and a support; the cylinder is in the middle, and the upper and lower heads are welded to the upper head and the lower head respectively; there are 3 to 5 supports, which are evenly distributed and fixed at the bottom of the lower head to support the gas storage tank.

[0008] The auxiliary device comprises: an air intake part, an air exhaust part, a pressure gauge, a safety valve and a drain pipe; the air intake part comprises an air intake pipe and an air intake flange, the air intake pipe is welded on the cylinder, and the air intake flange is welded on the air intake pipe; the exhaust part comprises an exhaust pipe and an exhaust flange, the exhaust pipe is welded on the cylinder, and the exhaust flange is welded on the exhaust pipe; the pressure gauge and the safety valve are both installed on the cylinder, and the pressure gauge is used to monitor the internal air pressure value of the gas storage tank; when the air pressure in the gas storage tank exceeds the set value due to physical reasons, the safety valve can be opened to stably control the pressure in the gas storage tank; the safety valve controls the physical pressure increase in the gas storage tank, and the bursting disc controls the chemical reaction pressure increase in the gas storage tank, and the two work together to protect the gas storage tank as a whole; the drain pipe is installed at the bottom of the lower head, and is used to discharge waste in the gas storage tank.

[0009] The diameter of the explosion relief pipe is related to the volume of the gas tank and is Φ300~800mm / m 3 This size can not only meet the explosion relief requirements, but also ensure the strength of the gas tank body is safe and reliable.

[0010] The inside of the gas tank is sprayed with an anti-corrosion layer.

[0011] Compared with the prior art, the above-mentioned explosion-proof gas storage tank for dust removal system has the following beneficial effects.

[0012] ① It has explosion-proof function. Compared with conventional gas tanks in the industry, the patent of this invention has an explosion vent at the top. When the internal pressure of the gas tank increases sharply, such as an explosion in the gas tank, the explosion vent can effectively prevent the gas tank from breaking due to the explosion by quickly releasing pressure or energy, thereby protecting the safety of equipment and personnel.

[0013] ② The bursting disc fragmentation mode is controllable. A positive arch grooved bursting disc is used. As a one-time safety pressure relief device, it can block the explosion shock wave to protect the safety of the gas storage tank. When the bursting disc is broken by the explosion, no fragments will be splashed, and no sparks will be generated during the blasting process.

[0014] ③ The fixing method of the bursting disc is simple and reliable. Compared with the reverse arch bursting disc, the positive arch groove bursting disc does not require a special clamp or support frame. Two flanges are used to clamp the bursting disc. It has a simple structure, is easy to install and maintain, and saves costs.

[0015] ④ The bursting disc and the safety valve can work in conjunction. The bursting disc controls the pressure increase caused by the chemical reaction in the gas tank, and the safety valve controls the physical pressure increase in the gas tank. When the gas in the gas tank rises sharply for whatever reason, both can play an explosion-proof function and work together to protect the entire gas tank.

[0016] ⑤ Internal anti-corrosion. There is an explosion vent on the top of the gas tank, through which personnel can carry out manual painting inside the gas tank. By spraying paint to generate an anti-corrosion layer of more than 60 microns, the inner surface of the gas tank can be prevented from being corroded, thus extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the main structure of the gas storage tank.

[0019] Figure 3 yes Figure 1 Schematic diagram of the explosion-proof device structure.

[0020] Figure 4 yes Figure 1 Schematic diagram of the accessory device structure.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure of the intake and exhaust parts in the auxiliary device.

[0022] above Figures 1 to 5 The markings are: 1. Gas tank body, 1-1. Cylinder, 1-2. Upper head, 1-3. Lower head, 1-4. Support, 2. Explosion-proof device, 2-1. Explosion vent, 2-2. Burst disc, 2-3. Lower flange, 2-4. Upper flange, 2-5. Bolt group, 3. Accessory device, 3-1. Intake part, 3-1-1. Intake pipe, 3-1-2. Intake flange, 3-2. Exhaust part, 3-2-1. Exhaust pipe, 3-2-2. Exhaust flange, 3-3. Pressure gauge, 3-4. Safety valve, 3-5. Drain pipe. Specific implementation plan

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings.

[0024] An explosion-proof gas storage tank for a dust removal system comprises a gas storage tank body 1, an explosion-proof device 2 and an auxiliary device 3; the explosion-proof device 2 is disposed at the upper end of the gas storage tank body 1, and the auxiliary device 3 is fixed to the gas storage tank body 1.

[0025] The main body 1 of the gas tank includes: a cylinder 1-1, an upper head 1-2, a lower head 1-3 and a support 1-4. The cylinder 1-1 is in the middle, and is welded to the upper head 1-2 and the lower head 1-3 at the top and bottom respectively. There are 4 supports 1-4, which can also be set to 3 or 5, which are fixed to the bottom of the lower head 1-3 to support the gas tank. The upper head 1-2 is specially provided with an explosion vent, which serves as an explosion vent channel and is connected to the explosion vent pipe 2-1 in the explosion-proof device 2, and the welding personnel can perform painting operations inside the gas tank through the explosion vent. By spraying paint to generate an anti-corrosion layer of more than 60μm, the inner surface of the gas tank can be prevented from being corroded, the service life of the equipment is extended, and the corrosion resistance of the tank body is effectively improved. When the internal pressure of the gas tank rises sharply, such as an explosion in the gas tank, the pressure or energy is quickly released through the explosion vent, which can effectively prevent the gas tank from being damaged by the explosion and protect the safety of equipment and personnel.

[0026] The explosion-proof device 2 includes: an explosion-proof pipe 2-1, a bursting disc 2-2, a lower flange 2-3, an upper flange 2-4 and a bolt group 2-5. The explosion-proof pipe 2-1 is welded to the top of the upper head 1-2, and the lower flange 2-3 is welded to the explosion-proof pipe 2-1. The bursting disc 2-2 is a positive arch groove type, and the lower flange 2-3 and the upper flange 2-4 are connected and clamped by 8 groups of bolt groups 2-5. When a chemical reaction occurs in the gas tank and explodes, the internal pressure rises sharply, and the bursting disc 2-2 at the weakest link of the gas tank is broken, allowing the internal pressure gas to be quickly released, thereby protecting the gas tank as a whole. Moreover, the positive arch groove type bursting disc can not produce fragments during the explosion, and no sparks are generated during the explosion process, and the explosion-proof effect is better. Compared with the reverse arch type bursting disc, it does not require a special clamp or a support frame. Two flanges are used to clamp the bursting disc, which has a simple structure, convenient installation and maintenance, and saves costs. The diameter of the explosion relief pipe 2-1 is generally Φ300~800mm / m 3 This size can not only meet the explosion relief requirements, but also ensure the strength of the gas tank body is safe and reliable; in this implementation, it is Φ500 mm / m 3 .

[0027] The accessory device 3 includes: an air intake part 3-1, an air exhaust part 3-2, a pressure gauge pipe 3-3, a safety valve pipe 3-4, a sewage pipe 3-5 and a connecting flange 3-6. The air intake part 3-1 includes an air intake pipe 3-1-1 and an air intake flange 3-1-2. The air intake pipe 3-1-1 is welded to the cylinder 1-1, and the air intake flange 3-1-2 is welded to the air intake pipe 3-1-1. The exhaust part 3-2 includes an exhaust pipe 3-2-1 and an exhaust flange 3-2-2. The exhaust pipe 3-2-1 is welded to the cylinder 1-1, and the exhaust flange 3-2-2 is welded to the exhaust pipe 3-2-1. The pressure gauge 3-3 and the safety valve 3-4 are both installed on the cylinder 1-1. The pressure gauge 3-3 is used to monitor the internal air pressure value of the gas storage tank. When the air pressure in the gas storage tank exceeds the set value due to physical reasons, the safety valve 3-4 can be opened to stably control the pressure in the gas storage tank. The safety valve 3-4 controls the physical pressure increase in the gas storage tank, and the bursting disc 2-2 controls the chemical reaction pressure increase in the gas storage tank. The two work together to protect the gas storage tank as a whole. The sewage pipe 3-5 is installed at the bottom of the lower head 1-3 to discharge the waste in the gas storage tank.

[0028] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

Claims

1. An explosion-proof gas storage tank for a dust removal system, characterized in that: The gas storage tank comprises a gas storage tank body (1), an explosion-proof device (2) and an auxiliary device (3); the explosion-proof device (2) is placed at the upper end of the gas storage tank body (1), and the auxiliary device (3) is fixed to the gas storage tank body (1); the explosion-proof device (2) comprises: an explosion relief pipe (2-1), a bursting disc (2-2), a lower flange (2-3), an upper flange (2-4) and a bolt group (2-5); the explosion relief pipe (2-1) is welded to the top end of the upper head (1-2), and the lower flange (2-3) is welded to the explosion relief pipe (2-1); the bursting disc (2-2) is a positive arch groove type, and the lower flange (2-3) and the upper flange (2-4) are connected by 4 to 16 sets of bolt groups (2-5) to clamp the bursting disc (2-2).

2. The explosion-proof gas storage tank for dust removal system according to claim 1, characterized in that: The gas storage tank body (1) comprises: a cylindrical body (1-1), an upper end cover (1-2), a lower end cover (1-3) and a support (1-4); the cylindrical body (1-1) is in the middle, and is welded to the upper end cover (1-2) and the lower end cover (1-3) at the top and bottom respectively; there are 3 to 5 supports (1-4) which are evenly distributed and fixed to the bottom of the lower end cover (1-3) and are used to support the gas storage tank.

3. The explosion-proof gas storage tank for dust removal system according to claim 1, characterized in that: The auxiliary device (3) comprises: an air intake part (3-1), an air exhaust part (3-2), a pressure gauge (3-3), a safety valve (3-4) and a sewage pipe (3-5); the air intake part (3-1) comprises an air intake pipe (3-1-1) and an air intake flange (3-1-2), the air intake pipe (3-1-1) is welded to the cylinder (1-1), and the air intake flange (3-1-2) is welded to the air intake pipe (3-1-1); the air exhaust part (3-2) comprises an exhaust pipe (3-2-1) and an exhaust flange (3-2-2), the exhaust pipe (3-2-1) is welded to the cylinder (1-1), and the exhaust flange (3-2-2) is welded to the cylinder (1-1). -2-2) is welded on the exhaust pipe (3-2-1); the pressure gauge (3-3) and the safety valve (3-4) are both installed on the cylinder (1-1), and the pressure gauge (3-3) is used to monitor the internal air pressure value of the gas storage tank; when the air pressure in the gas storage tank exceeds the set value due to physical reasons, the safety valve (3-4) can be opened to stabilize the pressure in the gas storage tank; the safety valve (3-4) controls the physical pressure increase in the gas storage tank, and the bursting disc (2-2) controls the chemical reaction pressure increase in the gas storage tank, and the two work together to protect the gas storage tank as a whole; the sewage pipe (3-5) is installed at the bottom of the lower head (1-3) and is used to discharge the waste in the gas storage tank.

4. The explosion-proof gas storage tank for dust removal system according to claim 1, characterized in that: The diameter of the explosion relief pipe (2-1) is related to the volume of the gas storage tank and is Φ300~800mm / m 3 This size can not only meet the explosion relief requirements, but also ensure the strength of the gas tank body is safe and reliable.

5. The explosion-proof gas storage tank for dust removal system according to claim 1, characterized in that: The inside of the gas tank is sprayed with an anti-corrosion layer.

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