Explosion venting type aerosol fire extinguishing device inner cylinder and fire extinguishing device thereof

Abstract

The explosion venting type aerosol fire extinguishing device inner barrel comprises a barrel body, a barrel cover assembly is installed at the spraying end of the barrel body, an explosion venting device is installed on the barrel body, the explosion venting device is connected with the barrel cover assembly, a cage body is installed at the end, close to the barrel cover assembly, in the barrel body, and the cage body is used for being filled with coolants. The cage body is installed at the end, close to the barrel cover assembly, in the barrel body, the cage body is filled with the cooling agent, when explosion venting occurs, the cooling agent is limited in the cage body all the time, the cooling agent cannot be sprayed out, and meanwhile flame spraying is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to an inner cylinder of an explosion-relief type aerosol fire extinguishing device and a fire extinguishing device thereof. Background Art

[0002] Chinese patent document CN102949795A, published (announced) date: 2013.03.06, discloses an explosion-relief type aerosol fire extinguishing device inner cylinder, which includes a cylinder body and a cylinder cover assembly arranged at one end of the cylinder body; an explosion-relief device is also arranged on the cylinder body; the explosion-relief device includes a friction layer, a connecting rod, a guide unit and a limit device; the connecting rod is connected to the cylinder cover assembly; the friction layer is arranged between the connecting rod and the cylinder body, and when the connecting rod is displaced along the hot air flow injection direction of the cylinder body under the guiding action of the guide unit, the friction layer provides friction resistance and buffering force for it; the guide unit is a device that can provide a guiding action for the connecting rod when it moves; the limit device is fixedly connected to the cylinder cover assembly and the connecting rod; when the end of the connecting rod slides to the cylinder cover assembly, it is limited by the limit device. Its advantages are: the inner cylinder of the fire extinguishing device consumes the kinetic energy generated by the deflagration in the process of moving and limiting the explosion-relief device, thereby achieving the purpose of safe and effective explosion relief, and avoiding the damage to people or objects caused by the deflagration of the explosive column.

[0003] Its shortcomings are: when the explosion-proof device moves to the front end, the gap between the cylinder cover assembly and the cylinder body becomes larger, and the coolant stored in the inner cylinder will spray out from the gap between adjacent connecting rods, which may cause damage to the outside. In addition, when explosion-proofing occurs, the coolant is greatly reduced or even missing, the open space of the fire-extinguishing device becomes larger, and flames will spray between the connecting rods, which may cause harm to the user. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide an inner cylinder of an explosion-proof aerosol fire extinguishing device and a fire extinguishing device thereof, wherein a cage is installed inside the cylinder near one end of a cylinder cover assembly, and the cage is used to fill a coolant, so that when an explosion-proof aerosol fire extinguishing device occurs, the coolant is always confined in the cage, and will not be sprayed out, and the spraying of flames is also avoided.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an inner cylinder of an explosion-proof aerosol fire extinguishing device, including a cylinder body, a cylinder cover assembly is installed at the injection end of the cylinder body, an explosion-proof device is installed on the cylinder body, the explosion-proof device is connected to the cylinder cover assembly, and a cage is installed inside the cylinder body at one end close to the cylinder cover assembly, and the cage is used to fill with coolant.

[0006] The cage body is a columnar grid cage.

[0007] The cage body comprises a tube body, filter plates are fixedly mounted on both ends of the tube body, and ventilation holes are arranged on the outer wall of the tube body.

[0008] The filter plate edge is provided with a folded edge.

[0009] The filter plate is a perforated plate or a mesh plate.

[0010] The cage body is movably installed in the cylinder body.

[0011] A supporting portion is arranged between the cage body and the cylinder cover assembly.

[0012] A fire extinguishing device adopts the explosion-relief type aerosol fire extinguishing device inner cylinder.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model installs a cage body inside the cylinder body near one end of the cylinder cover assembly, and the cage body is used to fill the coolant. When explosion venting occurs, the coolant is always confined in the cage body, which will not cause the coolant to spray out, and also avoids the spraying of flames.

[0015] 2. The cage of the utility model is movably installed in the cylinder. When explosion relief occurs, the cage and the coolant inside it are pushed out by the internal pressure. When the explosion relief device is limited, one end of the cage abuts against the cylinder cover assembly, and the other end is still in the cylinder. The thickness of the coolant in the cylinder will be reduced, which is convenient for gas discharge and pressure relief, and the cage outside the cylinder expands the area of ​​gas release. Thereby, the pressure relief effect can be better achieved, and the coolant can be prevented from spraying out, and the spraying of flames can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the cage body of the utility model.

[0019] Figure 3 It is a cross-sectional structural schematic diagram of another embodiment of the cage body of the utility model.

[0020] In the figure: a cylinder 10 , a cylinder cover assembly 11 , a coolant 12 , an explosion relief device 20 , a cage 30 , a tube body 31 , a filter plate 32 , a folded edge 321 , and a support portion 33 . DETAILED DESCRIPTION

[0021] Embodiment 1:

[0022] See also Figure 1-3, An inner cylinder of an explosion-relief aerosol fire extinguishing device comprises a cylinder 10, a cylinder cover assembly 11 is installed at the injection end of the cylinder 10, an explosion-relief device 20 is installed on the cylinder 10, and the explosion-relief device 20 is connected to the cylinder cover assembly 11. A cage 30 is installed inside the cylinder 10 at one end close to the cylinder cover assembly 11, and the cage 30 is used to fill a coolant 13. By installing the cage 30 at one end of the cylinder cover assembly 11 inside the cylinder 10, and filling the cage 30 with a coolant 12, when explosion-relief occurs, the coolant 12 is always confined in the cage 30, and the coolant 12 will not be ejected, and the flame spraying is also avoided.

[0023] In a preferred embodiment, the cage body 30 is a cylindrical mesh cage. Specifically, the mesh cage is made of a metal mesh. The mesh cage can be cylindrical or other cylindrical structures, such as an elliptical cylinder structure.

[0024] In another embodiment, see Figure 2 The cage body 30 includes a tube body 31, filter plates 32 are fixedly mounted at both ends of the tube body 31, and the outer wall of the tube body 31 is provided with ventilation holes. Specifically, the tube body 31 can be a metal tube, or can be rolled by a perforated plate. The filter plate 32 needs to ensure that the coolant 12 does not leak out and is convenient for ventilation. The filter plate 32 can be welded to the end of the tube body 31.

[0025] For further information, see Figure 3 The filter plate 32 has an edge folded 321 to improve the structural strength of the filter plate 32 and facilitate welding. The folded 321 can be formed by a stamping process.

[0026] In a preferred embodiment, the filter plate 32 is a perforated plate or a mesh plate. The perforated plate is a metal plate with many holes, and the mesh plate is a plate-like structure made of metal wires.

[0027] Furthermore, the cage 30 is movably installed in the cylinder 10 to facilitate better pressure relief. When explosion relief occurs, the cage 30 and the coolant 12 inside it are pushed out by the internal pressure. When the explosion relief device is limited, one end of the cage 30 abuts against the cylinder cover assembly 11, and the other end is still located in the cylinder 10. In this way, the thickness of the coolant 12 located in the cylinder 10 will be reduced, which is convenient for gas discharge and pressure relief, and the cage 30 located outside the cylinder 10 expands the area of ​​gas release. Thereby, the pressure relief effect can be better achieved, and the coolant 12 can be prevented from spraying out, while avoiding the spraying of flames.

[0028] Furthermore, a support portion 33 is provided between the cage body 30 and the barrel cover assembly 11. The support portion 33 forms a gap between the barrel cover assembly 11 and the cage body 30, so that the gas between the cage body 30 and the barrel cover assembly 11 can be discharged from the nozzle in the middle of the barrel cover assembly 11. Specifically, the support portion 33 is a rod or an arc-shaped plate, and the support portion 33 can be provided on the barrel cover assembly 11, or on the cage body 30, or the two ends of the support portion 33 can be welded to the cage body 30 and the barrel cover assembly 11 respectively.

[0029] Embodiment 2:

[0030] A fire extinguishing device adopts the explosion-relief type aerosol fire extinguishing device inner cylinder.

[0031] The working process or principle of the utility model is as follows:

[0032] See also Figure 1 When explosion relief occurs, the cage 30 and the coolant 12 inside it are pushed out by the internal pressure. When the explosion relief device is limited, one end of the cage 30 abuts against the cylinder cover assembly 11, and the other end is still located in the cylinder 10. The thickness of the coolant 12 located in the cylinder 10 is reduced, which is convenient for gas discharge and pressure relief, and the cage 30 located outside the cylinder 10 expands the area of ​​gas release. In this way, the pressure relief effect can be better achieved, and the coolant 12 can be prevented from spraying out, and the spraying of flames can be avoided.

Claims

1. An inner cylinder of an explosion-relief aerosol fire extinguishing device, comprising a cylinder (10), a cylinder cover assembly (11) being installed at the injection end of the cylinder (10), an explosion-relief device (20) being installed on the cylinder (10), and the explosion-relief device (20) being connected to the cylinder cover assembly (11), characterized in that: A cage (30) is installed inside the cylinder (10) at one end close to the cylinder cover assembly (11), and the cage (30) is used to be filled with a coolant (12).

2. The inner cylinder of an explosion-venting aerosol fire extinguishing device according to claim 1, characterized in that: The cage body (30) is a cylindrical grid cage.

3. The inner cylinder of an explosion-venting aerosol fire extinguishing device according to claim 1, characterized in that: The cage body (30) comprises a tube body (31), filter plates (32) are fixedly mounted on both ends of the tube body (31), and an air vent is provided on the outer wall of the tube body (31).

4. The inner cylinder of an explosion-venting aerosol fire extinguishing device according to claim 3, characterized in that: The filter plate (32) is provided with a folded edge (321) on its edge.

5. The inner cylinder of an explosion-venting aerosol fire extinguishing device according to claim 3 or 4, characterized in that: The filter plate (32) is a perforated plate or a mesh plate.

6. An inner cylinder of an explosion-venting aerosol fire extinguishing device according to any one of claims 1 to 4, characterized in that: The cage body (30) is movably installed in the cylinder body (10).

7. The inner cylinder of an explosion-venting aerosol fire extinguishing device according to claim 6, characterized in that: A support portion (33) is provided between the cage body (30) and the cylinder cover assembly (11).

8. A fire extinguishing device, characterized in that: The inner cylinder of an explosion-relief aerosol fire extinguishing device as claimed in claim 1 is adopted.

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