Fire retarding and explosion venting device for coal mine gas conveying pipeline

Abstract

The utility model discloses a fire-retarding and explosion-venting device for a coal mine gas conveying pipeline, which relates to the technical field of fire-retarding and explosion-venting for coal mine gas conveying and comprises a gas inlet pipeline, a gas outlet pipeline, an explosion-venting component, sealing water, a water level controller, a glass tube water level gauge and a metal shunting net, the fire-retardant explosion venting device can be of a single-barrel structure or a double-barrel structure; according to the utility model, flame propagation is effectively blocked by arranging the metal shunting net and sealing water, so that the safety of gas conveying is ensured; the explosion venting component can quickly release pressure when the pressure in the pipeline is suddenly increased, so that the harm of explosion accidents is reduced; the bent pipe design of the gas inlet pipeline and the gas outlet pipeline ensures that gas cannot leak in the conveying process, and the overall sealing performance of the device is improved; in conclusion, the gas explosion can be effectively prevented, the pressure can be quickly released when the explosion occurs, the safety production of a coal mine is guaranteed, and the gas explosion prevention device has remarkable economic and social benefits.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine gas conveying fire resistance and explosion venting technical field, concretely is a kind of fire resistance and explosion venting device for coal mine gas conveying pipeline. BACKGROUND

[0002] Coal, petroleum, chemical, textile and other industries occupy very important position in national economy, these industries will produce explosive gas, steam or explosive dust in production process, and coal mine industry explosion accident is mainly caused by gas and coal powder, so coal mine gas conveying fire resistance and explosion venting problem is particularly important, should be coal mine safety insurance, take suitable fire resistance and explosion venting measures, so in the field of coal mine gas conveying fire resistance and explosion venting technology, coal mine gas conveying fire resistance and explosion venting device should be widely applied.

[0003] Coal mine gas conveying pipeline plays a vital role in coal mine safety production.However, gas has the characteristics of flammability and explosiveness, and once leakage occurs during conveying or encounters open flame, it is easy to cause explosion accident, resulting in serious personnel casualties and property losses.Therefore, how to effectively prevent gas explosion and rapidly release explosion pressure becomes a key technical problem in coal mine safety production.

[0004] Traditional gas conveying pipeline fire resistance and explosion venting device mostly adopts single fire resistance or explosion venting structure, and has problems of unsatisfactory fire resistance effect, untimely explosion venting, etc.In addition, the structure of existing device is complex, inconvenient to maintain, and has deficiencies in water level control and sealing performance, which is difficult to meet the long-term stable operation demand under complex coal mine environment. SUMMARY

[0005] The utility model aims at providing a kind of fire resistance and explosion venting device for coal mine gas conveying pipeline to solve the problems of traditional gas conveying pipeline fire resistance and explosion venting device, which mostly adopts single fire resistance or explosion venting structure, and has problems of unsatisfactory fire resistance effect and untimely explosion venting.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of fire resistance and explosion venting device for coal mine gas conveying pipeline, including fire resistance bucket, the top of fire resistance bucket is provided with explosion venting component, left side is provided with air inlet pipeline, right side is provided with air outlet pipeline, the inside bottom of fire resistance bucket is filled with sealed water, and metal shunt net is provided on the top surface of the sealed water, glass tube water level gauge is provided on the left side of the outside bottom of fire resistance bucket, and water level controller is provided on the right side;Air inlet pipeline includes air inlet flange, flange short pipe, air inlet elbow, and the opening of air inlet elbow is downward and deep into the water surface of sealed water;Air outlet pipeline includes air outlet flange, flange short pipe, air outlet elbow, and the opening of air outlet elbow is upward.

[0007] Preferably, the fire-resistant bucket is a single-bucket structure, comprising a metal fire-resistant bucket body, the fire-resistant bucket body comprising a hollow bucket body with an open top and a connecting flange fixed to the top end of the outer wall of the hollow bucket body, and a blast relief component bolted to the connecting flange; a circular hole is provided in the middle of the left side wall of the hollow bucket body and a gas inlet pipe is fixed to the circular hole and extends into the hollow bucket body, and a circular hole is provided in the middle of the right side wall of the hollow bucket body and a gas outlet pipe is fixed to the circular hole and communicates with the hollow bucket body; the inside bottom of the hollow bucket body is filled with sealed water, and a metal shunt screen is fixed to the inner wall of the hollow bucket body at the water surface of the sealed water; a water level communication pipe is provided on the bottom of the left outer wall of the hollow bucket body and above the water surface of the sealed water, respectively, and two water level communication pipes are connected to a glass tube water level gauge; a water level control communication pipe is provided on the bottom of the right outer wall of the hollow bucket body and above the water surface of the sealed water, respectively, and two water level control communication pipes are connected to a water level controller.

[0008] Preferably, the flange short pipe of the gas inlet pipe is fixed to the circular hole of the left side wall of the hollow bucket body, and the gas inlet elbow is a ninety-degree semicircular elbow with the opening downward and the opening end inserted into the water surface of the sealed water, and the axis of the opening end of the gas inlet elbow coincides with the axis of the hollow bucket body.

[0009] Preferably, the flange short pipe of the gas outlet pipe is fixed to the circular hole of the right side wall of the hollow bucket body, and the gas outlet elbow is a ninety-degree semicircular elbow with the opening upward and the axis of the top opening end of the gas outlet elbow coincides with the axis of the hollow bucket body.

[0010] Preferably, the metal shunt screen is provided on the water surface of the sealed water and is fixed to the inner wall of the hollow bucket body at the edge, and a circular hole is provided at the axis of the hollow bucket body, and the gas inlet elbow passes through the circular hole and is fixed to the metal shunt screen.

[0011] Preferably, the fire-resistant bucket is a double-bucket structure, comprising a gas inlet bucket and a gas outlet bucket made of metal and connected as a whole, the gas inlet bucket is connected with a gas inlet pipe, the gas outlet bucket is connected with a gas outlet pipe, the left side wall of the gas inlet bucket is provided with a glass tube water level gauge on the outside bottom and a water level controller on the right side wall; the gas inlet bucket is filled with sealed water and is provided with a metal shunt screen at the water surface of the sealed water; the top of the gas outlet bucket is provided with a blast relief component.

[0012] Preferably, the air inlet barrel is a sealed barrel and is provided with a large circular hole in the middle of the left side wall and is fixed with an air inlet pipeline which penetrates into the hollow barrel, and is provided with a circular hole in the middle of the right side wall and is fixed with a flange pipe; the inner side bottom of the air inlet barrel is filled with sealed water, and a metal shunt net is fixed to the inner wall of the air inlet barrel at the water surface of the sealed water; the bottom of the left outer wall of the air inlet barrel and above the water surface of the sealed water are respectively provided with water level connecting pipes, and the two water level connecting pipes are jointly connected with a glass tube water level gauge; the bottom of the right outer wall of the hollow barrel and above the water surface of the sealed water are respectively provided with water level control connecting pipes, and the two water level control connecting pipes are jointly connected with a water level controller; the air outlet barrel is a hollow air outlet barrel body with an open top, the outer wall top end of the hollow air outlet barrel body is fixed with a connecting flange, and the connecting flange is bolted with a pressure relief component; the middle of the left side wall of the hollow air outlet barrel body is provided with a circular hole and is fixed with a flange pipe which is bolted with the flange pipe of the air inlet barrel as a whole; the middle of the right side wall of the air outlet barrel is provided with a circular hole and is fixed with an air outlet pipeline which communicates with the hollow barrel body; the inner side bottom of the hollow air outlet barrel body is filled with sealed water, and the left outer wall bottom of the hollow air outlet barrel body is provided with a balance pipe which communicates with the water level controller.

[0013] Preferably, the edge of the metal shunt net is fixed to the inner wall of the air inlet barrel, and a circular hole is provided at the axis of the metal shunt net, and the air inlet elbow of the air inlet pipeline is inserted into the circular hole and the outer wall is fixed to the outer wall of the metal shunt net.

[0014] Preferably, the opening of the air inlet elbow of the air inlet pipeline is downward and penetrates below the water surface of the sealed water, and the axis of the opening end of the air inlet elbow coincides with the axis of the air inlet barrel; the opening of the air outlet elbow of the air outlet pipeline is upward, and the axis of the top opening end coincides with the axis of the air outlet barrel.

[0015] Preferably, the pressure relief component adopts a flat plate slotted bursting disc.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. By setting the metal shunt net and the sealed water, the flame propagation can be effectively blocked, the flame can be prevented from spreading through the pipeline, and the safety of gas transportation can be ensured;

[0018] 2. The device is provided with a pressure relief component at the top, which can rapidly release the pressure when the pressure in the pipeline suddenly increases, avoid the pipeline from being broken due to excessive pressure, and reduce the harm of explosion accidents;

[0019] 3. The device adopts a single-bucket or double-bucket structure, which is compact, easy to install and maintain, and suitable for long-term use in complex coal mine environments; the single-bucket or double-bucket structure can be selected according to actual needs to adapt to different gas transmission pipeline layout requirements, and has strong versatility and adaptability.

[0020] 4. The water level of the sealing water can be monitored and adjusted in real time through the glass tube water level gauge and water level controller to ensure that the fire-resistant effect and sealing performance of the device are always in the best condition.

[0021] 5. The bend design of the inlet and outlet pipes ensures that the gas will not leak during transportation, thus improving the overall sealing performance of the device.

[0022] In summary, this utility model can not only effectively prevent gas explosions, but also quickly release pressure when an explosion occurs, ensuring safe production in coal mines and having significant economic and social benefits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a single-barrel unit of this utility model;

[0024] Figure 2 for Figure 1 Structural diagram;

[0025] Figure 3 This is a schematic diagram of the double-barrel design of this utility model;

[0026] Figure 4 for Figure 3 Structural diagram;

[0027] In the diagram: Flame arrestor barrel-1, hollow barrel-11, connecting flange-12, water level connecting pipe-13, water level control connecting pipe-14, explosion relief component-2, air inlet pipe-3, air inlet flange-31, flange short pipe-32, air inlet bend-33, air outlet pipe-4, air outlet flange-41, air outlet bend-42, sealing water-5, metal diversion mesh-6, glass tube water level gauge-7, water level controller-8, air inlet barrel-9, flange pipe-91, air outlet barrel-10, hollow air outlet barrel-101. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1-4 , Figure 1 This is a schematic diagram of a single-barrel unit of this utility model; Figure 2 for Figure 1 Structural diagram; Figure 3 This is a schematic diagram of the double-barrel design of this utility model;Figure 4 For Figure 3 Structural diagram.

[0030] Embodiment 1:

[0031] The utility model provides a kind of fire resistance explosion venting device for coal mine gas conveying pipeline, for single bucket structure, including fire resistance bucket body 1, the top of fire resistance bucket body 1 is provided with explosion venting component 2, left side is provided with air inlet pipeline 3, right side is provided with air outlet pipeline 4, the inside bottom of fire resistance bucket body 1 is filled with sealing water 5, and metal shunt net 6 is provided on the top surface of sealing water 5, glass tube water level meter 7 is provided on the left side of the outside bottom of fire resistance bucket body 1, and water level controller 8 is provided on the right side.

[0032] Fire resistance bucket body 1 is made of metal, including hollow barrel 11 with top opening, the outer wall top end of hollow barrel 11 is fixedly connected with connecting flange 12, and explosion venting component 2 is bolted to connecting flange 12;The middle of left side wall of hollow barrel 11 is provided with round hole and is fixedly connected with air inlet pipeline 3 that penetrates into hollow barrel 11, and the middle of right side wall is provided with round hole and is fixedly connected with air outlet pipeline 4 that communicates with hollow barrel 11, the inside bottom of hollow barrel 11 is filled with sealing water 5, and metal shunt net 6 is provided at the water surface of sealing water and is fixedly connected with the inner wall of hollow barrel 11, water level communication pipe 13 is respectively provided on the left outer wall bottom of hollow barrel 11 and above the water surface of sealing water 5, and glass tube water level meter 7 is connected to the two water level communication pipes 13;Right outer wall bottom of hollow barrel 11 and above the water surface of sealing water 5 are respectively provided with water level control communication pipe 14, and water level controller 8 is connected to the two water level control communication pipes 14.

[0033] Explosion venting component 2 adopts flat plate slotted bursting disc.

[0034] Air inlet pipeline 3 includes air inlet flange 31, flange short pipe 32 is connected to air inlet flange 31, flange short pipe 32 is fixedly connected with the left side wall round hole of hollow barrel 11, one end of flange short pipe 32 that extends into the inside of hollow barrel 11 is connected with ninety-degree semicircular air inlet elbow pipe 33 with opening downward, and the opening end is inserted into the water surface of sealing water 5, and the axis of the opening end of air inlet elbow pipe 33 coincides with the axis of hollow barrel 11.

[0035] The air outlet pipeline 4 comprises an air outlet flange 41, a flange short pipe 32 is connected to the air outlet flange 41, the flange short pipe 32 is fixedly connected with a right side wall round hole of the hollow barrel 11, one end of the flange short pipe 32 extending into the inside of the hollow barrel 11 is connected with a ninety-degree semicircle air outlet elbow 42 opening upward, and the axis of the top opening end of the air outlet elbow 42 coincides with the axis of the hollow barrel 11.

[0036] The metal shunt net 6 is arranged on the water surface of the sealing water 5, and the edge thereof is fixedly connected with the inner wall of the hollow barrel 11, and a round hole is arranged at the axis of the hollow barrel 11, and the air inlet elbow 33 passes through the round hole and is fixedly connected with the metal shunt net.

[0037] The glass tube water level gauge 7 is used for viewing the water level of the sealing water 5 in real time.

[0038] The water level controller 8 is used for controlling the water level of the sealing water 5, and when the water level of the sealing water 5 is insufficient or exceeds, water is added or drained in time.

[0039] In use, when a pipeline gas explosion occurs, the pressure in the fire blocking and explosion relief device is greater than the set value of the explosion relief component 2, the pressure can be rapidly relieved, the sealing water 5 can isolate the flame from the explosion direction, prevent the flame from propagating reversely, and cause greater explosion.

[0040] Embodiment 2:

[0041] The utility model provides a kind of fire blocking and explosion relief device for coal mine gas conveying pipeline, it is double-barrel structure, including the integrated air inlet barrel 9 and air outlet barrel 10 connected, the air inlet barrel 9 is connected with air inlet pipeline 3, the air outlet barrel 10 is connected with air outlet pipeline 4, the left side wall outside bottom of the air inlet barrel 9 is provided with glass tube water level gauge 7, and right side wall outside bottom is provided with water level controller 8;The air inlet barrel 9 is filled with sealing water 5, and metal shunt net is arranged at the water surface of sealing water 5;The top of the air outlet barrel 10 is provided with explosion relief component 2.

[0042] The air inlet barrel 9 is a sealed barrel made of metal material, and a large circular hole is arranged in the middle of the left side wall and a flange pipe 91 is fixedly connected and extends into the hollow barrel 11; a circular hole is arranged in the middle of the right side wall and a flange pipe 91 is fixedly connected; the inside bottom of the air inlet barrel is filled with sealed water 5, and a metal shunt net 6 is fixedly connected to the inner wall of the air inlet barrel 9 at the water surface of the sealed water; the bottom of the left outer wall of the air inlet barrel 9 and the water surface of the sealed water 5 are respectively provided with water level connecting pipes 13, and the two water level connecting pipes 13 are jointly connected with a glass tube water level gauge 7; the bottom of the right outer wall of the hollow barrel 11 and the water surface of the sealed water 5 are respectively provided with water level control connecting pipes 14, and the two water level control connecting pipes 14 are jointly connected with a water level controller 8.

[0043] The air outlet barrel 10 is a hollow air outlet barrel body 101 made of metal and having an open top, a connecting flange 12 is fixedly connected to the top end of the outer wall of the hollow air outlet barrel body 101, and a blast releasing component 2 is bolted to the connecting flange 12; a circular hole is arranged in the middle of the left side wall of the hollow air outlet barrel body 101 and a flange pipe 91 is fixedly connected, and the flange pipe 91 of the air inlet barrel 9 is bolted to form an integral body; a circular hole is arranged in the middle of the right side wall of the air outlet barrel 10 and a flange pipe 91 is fixedly connected, and the flange pipe 91 is in communication with the hollow barrel 11; the inside bottom of the hollow air outlet barrel body 101 is filled with sealed water 5, and a balance pipe 102 is arranged at the bottom of the left outer wall of the hollow air outlet barrel body 101 and is in communication with the water level controller 8.

[0044] The air inlet pipe 3 comprises an air inlet flange 31, a flange short pipe 32 and an air inlet elbow 33, the opening of the air inlet elbow 33 is downward and extends below the water surface of the sealed water 5, and the axis of the top opening end of the air inlet elbow 33 coincides with the axis of the air inlet barrel 9.

[0045] The air outlet pipe 4 comprises an air outlet flange 41, a flange short pipe 32 and an air outlet elbow 42, the opening of the air outlet elbow 42 is upward, and the axis of the top opening end coincides with the axis of the air outlet barrel 10.

[0046] The edge of the metal shunt net 6 is fixedly connected to the inner wall of the air inlet barrel 9, and a circular hole is arranged at the axis of the metal shunt net 6, the air inlet elbow 33 is inserted into the circular hole, and the outer wall is fixedly connected to the outer wall of the metal shunt net 6.

[0047] Although the embodiments of the present application have been shown and described, it is apparent that the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, it can be understood by those skilled in the art that, without departing from the principles and spirits of the present application, all other embodiments obtained by various changes, modifications, replacements and variations of these embodiments without creative labor belong to the protection scope of the present application.

Claims

1. A flame arrestor and explosion venting device for coal mine gas conveying pipelines, characterized in that: The fire arrestor includes a fire-resistant barrel, which is equipped with an explosion relief component (2) on the top, an air inlet pipe (3) on the left side, and an air outlet pipe (4) on the right side. The bottom inner side of the fire arrestor is filled with sealing water (5), and a metal diversion mesh (6) is provided on the top surface of the sealing water (5). A glass tube water level gauge (7) is provided on the left side of the bottom outer side of the fire arrestor, and a water level controller (8) is provided on the right side. The air inlet pipe (3) includes an air inlet flange (31), a flange short pipe (32), and an air inlet bend (33). The opening of the air inlet bend (33) is downward and extends into the water surface of the sealing water (5). The air outlet pipe (4) includes an air outlet flange (41), a flange short pipe (32), and an air outlet bend (42). The opening of the air outlet bend (42) is upward.

2. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 1, characterized in that: The flame arrestor is a single-barrel structure, comprising a metal flame arrestor body (1). The flame arrestor body (1) includes a hollow barrel (11) with an open top and a connecting flange (12) fixed to the top of its outer wall. The connecting flange (12) is bolted to an explosion venting component (2). A round hole is provided in the middle of the left side wall of the hollow barrel (11) and an air inlet pipe (3) extending into the hollow barrel (11) is fixed to it. A round hole is provided in the middle of the right side wall and an air outlet pipe (4) communicating with the hollow barrel (11) is fixed to it. The bottom inner side of the hollow barrel (11) is filled with... A sealing water (5) is provided, and a metal diversion mesh (6) is fixed to the inner wall of the hollow barrel (11) at the water surface of the sealing water (5). A water level connecting pipe (13) is provided at the bottom of the left outer wall of the hollow barrel (11) and above the water surface of the sealing water (5). The two water level connecting pipes (13) are connected to a glass tube water level gauge (7). A water level control connecting pipe (14) is provided at the bottom of the right outer wall of the hollow barrel (11) and above the water surface of the sealing water (5). The two water level control connecting pipes (14) are connected to a water level controller (8).

3. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 2, characterized in that: The flange short pipe (32) of the air inlet pipe (3) is fixedly connected to the round hole on the left side wall of the hollow barrel (11). The air inlet bend (33) is a 90-degree semi-circular bend with its opening facing downwards and its opening end is inserted into the water surface of the sealing water (5). At the same time, the axis of the opening end of the air inlet bend (33) coincides with the axis of the hollow barrel (11).

4. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 3, characterized in that: The flange short pipe (32) of the air outlet pipe (4) is fixedly connected to the circular hole on the right side wall of the hollow barrel (11). The air outlet bend (42) is a 90-degree semi-circular bend with the opening facing upward and the axis of its top opening end coincides with the axis of the hollow barrel (11).

5. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 4, characterized in that: The metal diversion mesh (6) is set on the surface of the sealing water (5), and its edge is fixed to the inner wall of the hollow barrel (11). At the same time, a round hole is provided at the axis of the hollow barrel (11), and the air inlet bend (33) passes through the round hole and is fixed to the metal diversion mesh.

6. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 2, characterized in that: The fire-arresting barrel is a double-barrel structure, including an air inlet barrel (9) and an air outlet barrel (10) made of metal and connected as one unit. The air inlet barrel (9) is connected to an air inlet pipe (3), and the air outlet barrel (10) is connected to an air outlet pipe (4). A glass tube water level gauge (7) is installed at the bottom of the outer side of the left wall of the air inlet barrel (9), and a water level controller (8) is installed at the bottom of the outer side of the right wall. The air inlet barrel (9) is filled with sealing water (5), and a metal diversion mesh is installed at the water surface of the sealing water (5). An explosion relief component (2) is installed on the top of the air outlet barrel (10).

7. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 6, characterized in that: The air inlet barrel (9) is a sealed barrel body with a large round hole in the middle of its left side wall and an air inlet pipe (3) that extends into the hollow barrel body (11) fixedly connected to it. A round hole is provided in the middle of its right side wall and a flange pipe (91) is fixedly connected to it. The bottom of the inner side of the air inlet barrel is filled with sealing water (5). At the same time, a metal diversion mesh (6) fixedly connected to the inner wall of the air inlet barrel (9) is provided at the water surface of the sealing water. Water level connecting pipes (13) are respectively provided at the bottom of the left outer wall of the air inlet barrel (9) and above the water surface of the sealing water (5). The two water level connecting pipes (13) are connected to a glass tube water level gauge (7). Water level control connecting pipes (14) are respectively provided at the bottom of the right outer wall of the hollow barrel body (11) and above the water surface of the sealing water (5). The two water level control connecting pipes (14) are connected to a water level gauge (7). The air outlet (10) is a hollow air outlet body (101) with an open top. A connecting flange (12) is fixed to the top of the outer wall of the hollow air outlet body (101). The connecting flange (12) is bolted to a venting component (2). A round hole is provided in the middle of the left side wall of the hollow air outlet body (101) and a flange pipe (91) is fixed to it. The flange pipe (91) of the air inlet (9) is bolted to form a whole. A round hole is provided in the middle of the right side wall of the air outlet body (10) and an air outlet pipe (4) connected to the hollow body (11) is fixed to it. The bottom of the inner side of the hollow air outlet body (101) is filled with sealing water (5). A balance pipe (102) is provided at the bottom of the left outer wall of the hollow air outlet body (101) and is connected to the water level controller (8).

8. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 7, characterized in that: The edge of the metal diversion mesh (6) is fixed to the inner wall of the air inlet barrel (9), and a round hole is provided at the center of the metal diversion mesh (6). The air inlet bend (33) of the air inlet pipe (3) is inserted into the round hole, and its outer wall is fixed to the outer wall of the metal diversion mesh (6).

9. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to claim 8, characterized in that: The opening of the air inlet bend (33) of the air inlet pipe (3) is downward and extends below the water surface of the sealing water (5), and the axis of the opening end of the air inlet bend (33) coincides with the axis of the air inlet barrel (9); the opening of the air outlet bend (42) of the air outlet pipe (4) is upward, and the axis of its top opening end coincides with the axis of the air outlet barrel (10).

10. The flame arrestor and explosion venting device for coal mine gas conveying pipelines according to any one of claims 1-9, characterized in that: The explosion relief component (2) is a flat, slotted rupture disc.

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