Aerosol fire extinguishing device suitable for electric appliance cabinet

Abstract

The utility model relates to the technical field of fire extinguishing equipment, in particular to an aerosol fire extinguishing device suitable for an electric appliance cabinet, which comprises a fire extinguishing shell, a cooling ball, an aerosol grain, a left thermosensitive line and a right thermosensitive line, and a first drainage air passage, a second drainage air passage and a third drainage air passage are sequentially arranged on the inner side of the fire extinguishing shell from left to right. The first drainage air channel, the second drainage air channel and the third drainage air channel are all filled with cooling balls. The aerosol medicine column is reasonable and compact in structure, by arranging the first drainage air channel, the second drainage air channel and the third drainage air channel, after the aerosol medicine column reacts and generates an aerosol mixture, the drainage air channels can conduct flow guiding on the aerosol mixture, and therefore the aerosol mixture can flow through the drainage air channels in the process that the aerosol mixture passes through the drainage air channels. The aerosol mixture can be fully contacted with the cooling ball for a long time in a long path, the cooling effect can be improved, and the cooled aerosol mixture is sprayed out from the left airflow hole and the right airflow hole under the action of pressure to control a fire source.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing equipment technology, and is an aerosol fire extinguishing device suitable for electrical cabinets. Background Technology

[0002] Aerosol fire extinguishing devices are equipment that use aerosol technology to extinguish fires. They generate an aerosol mixture containing fine solid particles and inert gas through the combustion or decomposition of solid chemical substances. These aerosol particles can effectively absorb heat in the fire, lower the temperature, and slow down the combustion rate. At the same time, the inert gas can dilute the oxygen concentration in the fire and prevent the flames from continuing to burn, thereby achieving a rapid fire extinguishing effect.

[0003] In existing technologies, aerosol cartridges are typically placed in the center of an aerosol fire extinguishing device, and a heat-sensitive wire is used to trigger a fire by passing directly through the aerosol cartridge. When a fire occurs, the aerosol cartridge reacts to generate an aerosol mixture, which is then sprayed out. However, aerosol cartridges generate a large amount of heat when burning or decomposing. Although coolant is usually added to aerosol fire extinguishing devices, it is sometimes impossible to completely cool the aerosol mixture, resulting in excessively high temperatures that can damage the surrounding space. This is especially problematic in electrical cabinets, where excessively high temperatures can cause serious damage to electrical equipment. Summary of the Invention

[0004] This utility model provides an aerosol fire extinguishing device suitable for electrical cabinets, which overcomes the shortcomings of the prior art. It can effectively solve the problem that the mixture generated by aerosol cannot be completely cooled when the existing aerosol fire extinguishing device is working, which will cause damage to the surrounding equipment.

[0005] The technical solution of this utility model is achieved through the following measures: An aerosol fire extinguishing device suitable for electrical cabinets includes a fire extinguishing shell, a cooling ball, an aerosol propellant column, a left heat-sensitive wire, and a right heat-sensitive wire. From left to right, the inner side of the fire extinguishing shell is provided with a first drainage airway, a second drainage airway, and a third drainage airway. Each of the first, second, and third drainage airways is filled with a cooling ball. The lower inner side of the fire extinguishing shell is provided with a combustion chamber whose upper part is interconnected with the lower part of the second drainage airway. An aerosol propellant column is disposed within the combustion chamber. The upper part of the first air duct and the upper part of the third air duct are connected to the upper part of the second air duct. The lower part of the first air duct and the lower part of the third air duct are connected to the lower part of the combustion chamber. The upper left side of the extinguishing shell is provided with a left wire hole and a left air flow hole that are connected to the upper part of the first air duct at intervals. A left heat-sensitive wire with its end connected to the aerosol propellant is inserted in the left wire hole. The upper right side of the extinguishing shell is provided with a right wire hole and a right air flow hole that are connected to the upper part of the third air duct at intervals. A right heat-sensitive wire with its end connected to the aerosol propellant is inserted in the right wire hole.

[0006] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0007] The aforementioned fire extinguishing casing may include an outer shell, a left partition, and a right partition. The outer shell is rectangular. A left wire hole and a left airflow hole are spaced vertically on the upper left side of the outer shell, and a right wire hole and a right airflow hole are spaced vertically on the upper right side of the outer shell. The left and right partitions are fixedly installed inside the outer shell with left and right intervals. The left side of the left partition and the inner wall of the left part of the outer shell form a first airflow channel, and the right side of the right partition and the inner side of the right part of the outer shell form a third airflow channel. A second airflow channel is formed between the upper left side of the left partition and the upper left side of the right partition. The lower part of the left partition is recessed to the left to form an arc-shaped left groove with an opening to the right, and the lower part of the right partition is recessed to the right to form a right groove with an opening to the left. The left and right grooves form a combustion chamber.

[0008] The upper sides of the left and right partitions can be fixedly installed together with the upper inner wall of the outer shell. The upper left side of the left partition and the upper left side of the right partition are provided with several through holes at intervals.

[0009] The upper left side of the aforementioned outer casing can be recessed to the right to form a left mounting groove. A left wire hole is located on the upper right side of the left groove. At least one elongated oval left airflow hole with internal and external communication is provided at intervals on the inner side of the right part of the left mounting groove below the left wire hole. A left sealing label with a sealing sleeve on the outside of the left thermal wire is fixedly installed on the inner side of the left part of the left mounting groove. The upper right side of the outer casing is recessed to the left to form a right mounting groove. A right wire hole is located on the upper left side of the right groove. At least one elongated oval right airflow hole with internal and external communication is provided at intervals on the inner side of the left part of the right mounting groove below the right wire hole. A right sealing label with a sealing sleeve on the outside of the right thermal wire is fixedly installed on the inner side of the right mounting groove.

[0010] A base can be fixedly installed on the rear side of the aforementioned outer casing, and an adhesive layer is fixedly installed on the rear side of the base.

[0011] The upper left side of the aforementioned base may be provided with a left fixing groove that opens forward. A left connecting pin is fixedly installed on the lower inner side of the left fixing groove. A left hanging piece is rotatably installed on the outer side of the left connecting pin, and its rear side contacts the inner wall of the rear part of the left fixing groove. A left lifting hole that runs through the front and back is provided on the upper front side of the left hanging piece. The upper right side of the base is provided with a right fixing groove that opens forward. A right connecting pin is fixedly installed on the lower inner side of the right fixing groove. A right hanging piece that runs through the front and back is rotatably installed on the outer side of the right connecting pin. A right lifting hole that runs through the front and back is provided on the upper front side of the right hanging piece.

[0012] A left limiting pin can be fixed to the rear left side of the outer casing above the left connecting pin, and the right side of the left connecting pin is in contact with the left side of the left hanging piece. A right limiting pin is fixed to the rear right side of the outer casing above the right connecting pin, and the left side of the right connecting pin is in contact with the right side of the right hanging piece.

[0013] This utility model has a reasonable and compact structure. By setting up a first, second, and third guiding air channel, after the aerosol propellant column reacts and generates an aerosol mixture, the guiding air channel can guide the aerosol mixture, so that the aerosol mixture has a longer path and time to fully contact the cooling ball during the process of passing through the guiding air channel, which can improve the cooling effect. The cooled aerosol mixture is ejected from the left and right airflow holes under pressure, thus controlling the fire source.

[0014] The design of the air duct in this solution maintains the small size of the aerosol fire extinguishing device. After the aerosol mixture is generated, it is guided through the air duct to fully exchange heat with the cooling ball, which significantly reduces the temperature of the aerosol mixture. This ensures that the temperature of the aerosol mixture is low enough when it is sprayed, thus balancing the effects of small size and low temperature of aerosol mixture. This effectively solves the problem of high temperature causing damage to electrical equipment in existing technologies. Attached Figure Description

[0015] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments one to seven of this utility model.

[0016] Appendix Figure 2 This is a schematic diagram of the left-side structure after removing the left sealing label in embodiments four to seven of this utility model.

[0017] Appendix Figure 3 This is a schematic diagram of the right-side structure after removing the right sealing label in embodiments four to seven of this utility model.

[0018] Appendix Figure 4 These are schematic diagrams of the main cross-sectional structure of embodiments six and seven of this utility model.

[0019] Appendix Figure 5 This is a front sectional view of the left and right hanging plates during installation in embodiments six and seven of this utility model.

[0020] The codes in the attached diagram are as follows: 1 is cooling ball, 2 is aerosol propellant column, 3 is left thermal wire, 4 is right thermal wire, 5 is first drainage channel, 6 is second drainage channel, 7 is third drainage channel, 8 is combustion chamber, 9 is left through hole, 10 is left airflow hole, 11 is right through hole, 12 is right airflow hole, 13 is outer shell, 14 is left partition, 15 is right partition, 16 is left groove, 17 is right groove, 18 is connecting hole, 19 is left mounting groove, 20 is right mounting groove, 21 is left sealing label, 22 is right sealing label, 23 is adhesive layer, 24 is base, 25 is left fixing groove, 26 is right fixing groove, 27 is left connecting pin, 28 is right connecting pin, 29 is left hanging piece, 30 is right hanging piece, 31 is left lifting hole, 32 is right lifting hole, 33 is left limit pin, and 34 is right limit pin. Detailed Implementation

[0021] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0022] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0024] Example 1: As shown in the attached document Figure 1 As shown, the aerosol fire extinguishing device suitable for electrical cabinets includes an extinguishing shell, a cooling ball 1, an aerosol propellant column 2, a left heat-sensitive wire 3, and a right heat-sensitive wire 4. From left to right, the inner side of the extinguishing shell has a first drainage channel 5, a second drainage channel 6, and a third drainage channel 7, all filled with cooling balls 1. The lower inner side of the extinguishing shell has a combustion chamber 8, whose upper part is connected to the lower part of the second drainage channel 6. The combustion chamber 8 contains the aerosol propellant column 2. The upper part of the first drainage channel 5 and the third drainage channel... The upper part of 7 is connected to the upper part of the second air duct 6. The lower part of the first air duct 5 and the lower part of the third air duct 7 are connected to the lower part of the combustion chamber 8. The upper left side of the fire extinguishing shell is provided with a left wire hole 9 and a left air flow hole 10 connected to the upper part of the first air duct 5 at intervals. A left thermal wire 3 connected to the aerosol propellant 2 is inserted in the left wire hole 9. The upper right side of the fire extinguishing shell is provided with a right wire hole 11 and a right air flow hole 12 connected to the upper part of the third air duct 7 at intervals. A right thermal wire 4 connected to the aerosol propellant 2 is inserted in the right wire hole 11.

[0025] As required, both the left thermal conductor 3 and the right thermal conductor 4 are existing known technologies. The trigger temperature of both the left thermal conductor 3 and the right thermal conductor 4 is 170℃. This can avoid false triggering and ensure that the fire extinguishing device responds promptly in the early stage of a fire, eliminating fire hazards before they ignite. The dosage of aerosol propellant 2 in the combustion chamber 8 is ≥140g / m³. 3 This ensures sufficient cooling and fire extinguishing capabilities. Cooling ball 1 is a known ceramic ball, which has advantages such as high temperature resistance, high heat capacity, high mechanical strength and chemical stability. While absorbing a large amount of heat, it maintains structural integrity, will not break and block the drainage airway, and will not produce other substances that cause secondary pollution. In addition, ceramic balls are inexpensive, have low cost, and are easy to fill.

[0026] During use, when the left thermal wire 3 and / or the right thermal wire 4 encounter an open flame or the sensing temperature is ≥170℃, the left thermal wire 3 and / or the right thermal wire 4 are triggered, causing the aerosol propellant column 2 to react. By setting the first drainage channel 5, the second drainage channel 6, and the third drainage channel 7, after the aerosol propellant column 2 reacts and generates an aerosol mixture, the drainage channels can guide the aerosol mixture, so that the aerosol mixture has a longer path and time to fully contact the cooling ball 1 during the process of passing through the drainage channels, which can improve the cooling effect. The cooled aerosol mixture is ejected from the left airflow hole 10 and the right airflow hole 12 under pressure, controlling the fire source.

[0027] The design of the air duct in this solution maintains the small size of the aerosol fire extinguishing device. After the aerosol mixture is generated, it is guided through the air duct to fully exchange heat with the cooling ball 1, which significantly reduces the temperature of the aerosol mixture and ensures that the temperature of the aerosol mixture is low enough when it is sprayed. This solution combines the effects of small size and low temperature of aerosol mixture, effectively solving the problem of high temperature causing damage to electrical equipment in the prior art.

[0028] The above-mentioned aerosol fire extinguishing device suitable for electrical cabinets can be further optimized and / or improved according to actual needs:

[0029] Example 2: As an optimization of the above examples, as shown in the appendix. Figure 1 As shown, the fire extinguishing casing includes an outer shell 13, a left partition 14, and a right partition 15. The outer shell 13 is rectangular. A left wire hole 9 and a left airflow hole 10 are spaced vertically on the upper left side of the outer shell 13. A right wire hole 11 and a right airflow hole 12 are spaced vertically on the upper right side of the outer shell 13. The left partition 14 and the right partition 15 are fixedly installed inside the outer shell 13 at intervals. The left side of the left partition 14 and the inner wall of the left part of the outer shell 13 form a first airflow channel 5. The right side of the right partition 15 and the inner side of the right part of the outer shell 13 form a third airflow channel 7. A second airflow channel 6 is formed between the upper left side of the left partition 14 and the upper left side of the right partition 15. The lower part of the left partition 14 is recessed to the left to form an arc-shaped left groove 16 with an opening to the right. The lower part of the right partition 15 is recessed to the right to form a right groove 17 with an opening to the left. The left groove 16 and the right groove 17 form a combustion chamber 8.

[0030] As required, the left groove 16 and the right groove 17 form a circular combustion chamber 8. Both the upper and lower parts of the combustion chamber 8 have internal and external connecting channels. A gap is provided between the upper side of the left partition 14 and the upper side of the right partition 15 and the upper inner side of the outer shell 13. Cooling balls 1 are filled in the airflow channel to cool the aerosol mixture flowing into the airflow channel, preventing high temperatures from damaging external equipment or the surrounding space. This design not only improves structural stability but also optimizes the flow path of the aerosol mixture, ensuring sufficient heat exchange during the spraying process and effective response to fire hazards.

[0031] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 1 As shown, the upper side of the left partition 14 and the upper side of the right partition 15 are both fixedly installed together with the upper inner wall of the outer shell 13. The upper left side of the left partition 14 and the upper left side of the right partition 15 are provided with a number of through holes 18 at intervals.

[0032] During use, the upper side of the left partition 14 and the upper side of the right partition 15 are fixedly installed together with the upper inner wall of the outer shell 13. In this way, the left partition 14 and the right partition 15 can support the interior of the outer shell 13, enhance the strength of the outer shell 13, and prevent the outer shell 13 from deforming and failing to play a fire extinguishing role when the aerosol charge 2 reacts.

[0033] Example 4: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figure 3, the upper left side of the outer casing 13 is recessed to the right to form a left mounting groove 19. The left wire hole 9 is located on the upper right side of the left groove 16. At least one elongated oval left airflow hole 10 with internal and external communication is provided at intervals on the inner side of the right part of the left mounting groove 19 below the left wire hole 9. A left sealing label 21 with a sealing sleeve is fixedly installed on the inner side of the left part of the left mounting groove 19 and is fitted on the outside of the left thermal wire 3. The upper right side of the outer casing 13 is recessed to the left to form a right mounting groove 20. The right wire hole 11 is located on the upper left side of the right groove 17. At least one elongated oval right airflow hole 12 with internal and external communication is provided at intervals on the inner side of the left part of the right mounting groove 20 below the right wire hole 11. A right sealing label 22 with a sealing sleeve is fixedly installed on the inner side of the right part of the right mounting groove 20 and is fitted on the outside of the right thermal wire 4.

[0034] Depending on the requirements, the left mounting slot 19 and the right mounting slot 20 can also be formed on the left and right sides of the outer casing 13. During use, the left sealing label 21 and the right sealing label 22 can seal the left airflow hole 10 and the right airflow hole 12, preventing dust from entering the outer casing 13 and clogging the first drainage airway 5 and the third drainage airway 7. When the aerosol propellant 2 reacts, it can prevent the outer casing 13 from being blocked, which would lead to excessively high local temperatures. The left sealing label 21 and the right sealing label 22 seal the left airflow hole 10 and the right airflow hole 12 respectively. When the aerosol propellant 2 reacts, the aerosol mixture can quickly break through the sealing label and be sprayed out, achieving a fire extinguishing effect.

[0035] Example 5: As an optimization of the above examples, as shown in the appendix. Figure 2 , 3 As shown, a base 24 is fixedly installed on the rear side of the outer casing 13, and an adhesive layer 23 is fixedly installed on the rear side of the base 24.

[0036] Depending on the requirements, the adhesive layer 23 uses existing known technologies, such as double-sided adhesive. During use, the base 24 and the outer casing 13 can be directly adhered and installed near heat sources that are prone to causing fires via the adhesive layer 23. Installation is convenient, and the base 24 is fixed to the outer casing 13, facilitating the fixation of the outer casing 13 and ensuring its stability and sealing.

[0037] Example 6: As an optimization of the above examples, as shown in the appendix Figures 2 to 5 As shown, the upper left side of the base 24 is provided with a left fixing groove 25 that opens forward. A left connecting pin 27 is fixedly installed on the lower inner side of the left fixing groove 25. A left hanging piece 29 is rotatably installed on the outer side of the left connecting pin 27, and its rear side contacts the inner rear wall of the left fixing groove 25. A left hanging hole 31 that runs through the front and back is provided on the upper front side of the left hanging piece 29. The upper right side of the base 24 is provided with a right fixing groove 26 that opens forward. A right connecting pin 28 is fixedly installed on the lower inner side of the right fixing groove 26. A right hanging piece 30 that runs through the front and back is rotatably installed on the outer side of the right connecting pin 28. A right hanging hole 32 that runs through the front and back is provided on the upper front side of the right hanging piece 30.

[0038] According to requirements, the left hanging plate 29 and the right hanging plate 30 are symmetrically arranged. The rear side of the left hanging plate 29 contacts the rear inner wall of the left fixing groove 25, and the rear side of the right hanging plate 30 contacts the rear inner wall of the right fixing groove 26. The friction between the left hanging plate 29, the right hanging plate 30 and the base 24 ensures that the left hanging plate 29 and the right hanging plate 30 are initially located in the left fixing groove 25 and the right fixing groove 26 respectively. During installation, the left hanging plate 29 and the right hanging plate 30 are rotated around the left connecting pin 27 and the right connecting pin 28 respectively, so that the left lifting hole 31 is located on the left side of the base 24 and the right lifting hole 32 is located on the right side of the base 24. Then, fixing bolts are installed in the left lifting hole 31 and the right lifting hole 32 to install the base 24 and the outer shell 13 near the heat source that is prone to fire.

[0039] Example 7: As an optimization of the above examples, as shown in the appendix. Figures 2 to 5 As shown, a left limiting pin 33 is fixed to the rear left side of the outer casing 13 above the left connecting pin 27. The right side of the left connecting pin 27 is in contact with the left side of the left hanging piece 29. A right limiting pin 34 is fixed to the rear right side of the outer casing 13 above the right connecting pin 28. The left side of the right connecting pin 28 is in contact with the right side of the right hanging piece 30.

[0040] During use, by setting the left limiting pin 33 and the right limiting pin 34, the left hanging piece 29 located in the left fixing groove 25 and the right hanging piece 30 located in the right fixing groove 26 can be limited. When installing the base 24, the left hanging piece 29 is rotated. The material of the left hanging piece 29 is a thin plate, which is known to be available. This allows the upper part of the left hanging piece 29 to be bent and rotated, so that the left hanging piece 29 passes around the left limiting pin 33. Then the upper side of the left hanging piece 29 contacts the lower side of the left limiting pin 33. At the same time, the left hanging piece 29... The lower side of the right hanging plate 30 contacts the lower inner wall of the left fixing groove 25. Similarly, the upper side of the right hanging plate 30 contacts the lower side of the right limiting pin 34. Then, the fixing bolts are installed in the left lifting hole 31 and the right lifting hole 32 to fix the base 24 and the outer shell 13. At the same time, the lower side of the right hanging plate 30 contacts the lower inner wall of the right fixing groove 26. This can effectively prevent the left hanging plate 29 and the right hanging plate 30 from loosening during use and ensure the stability and reliability of the installation of the left hanging plate 29 and the right hanging plate 30.

[0041] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. An aerosol fire extinguishing device suitable for electrical cabinets, characterized in that... The fire extinguishing shell includes a fire-extinguishing casing, a cooling ball, an aerosol propellant column, a left heat-sensitive wire, and a right heat-sensitive wire. From left to right, the inner side of the fire-extinguishing casing has a first, second, and third drainage air duct, each filled with a cooling ball. The lower inner side of the fire-extinguishing casing has a combustion chamber, the upper part of which is connected to the lower part of the second drainage air duct. The combustion chamber contains an aerosol propellant column. The upper parts of the first and third drainage air ducts are connected to the second... The upper parts of the air intake channels are interconnected. The lower parts of the first and third air intake channels are both connected to the lower part of the combustion chamber. The upper left side of the extinguishing shell is provided with a left threading hole and a left airflow hole that are connected to the upper part of the first air intake channel. A left heat-sensitive wire with its end connected to the aerosol propellant is threaded through the left threading hole. The upper right side of the extinguishing shell is provided with a right threading hole and a right airflow hole that are connected to the upper part of the third air intake channel. A right heat-sensitive wire with its end connected to the aerosol propellant is threaded through the right threading hole.

2. The aerosol fire extinguishing device for electrical cabinets according to claim 1, characterized in that... The fire extinguishing shell includes an outer shell, a left partition, and a right partition. The outer shell is rectangular. A left wiring hole and a left airflow hole are spaced vertically on the upper left side of the outer shell, and a right wiring hole and a right airflow hole are spaced vertically on the upper right side of the outer shell. The left and right partitions are fixedly installed inside the outer shell with left and right intervals. The left side of the left partition and the inner wall of the left part of the outer shell form a first airflow channel, and the right side of the right partition and the inner side of the right part of the outer shell form a third airflow channel. A second airflow channel is formed between the upper left side of the left partition and the upper left side of the right partition. The lower part of the left partition is recessed to the left to form an arc-shaped left groove with an opening to the right, and the lower part of the right partition is recessed to the right to form a right groove with an opening to the left. The left and right grooves form a combustion chamber.

3. The aerosol fire extinguishing device for electrical cabinets according to claim 2, characterized in that... The upper sides of the left and right partitions are fixedly installed to the upper inner wall of the outer shell. The upper left side of the left partition and the upper left side of the right partition are provided with several through holes at intervals.

4. The aerosol fire extinguishing device for electrical cabinets according to claim 2 or 3, characterized in that... The upper left side of the outer casing is recessed to the right to form a left mounting groove. The left wire hole is located on the upper right side of the left groove. At least one elongated oval left airflow hole with internal and external communication is provided at intervals on the inner side of the right part of the left mounting groove below the left wire hole. A left sealing label with a sealing sleeve is fixedly installed on the inner side of the left part of the left mounting groove and is fitted on the outside of the left thermal wire. The upper right side of the outer casing is recessed to the left to form a right mounting groove. The right wire hole is located on the upper left side of the right groove. At least one elongated oval right airflow hole with internal and external communication is provided at intervals on the inner side of the left part of the right mounting groove below the right wire hole. A right sealing label with a sealing sleeve is fixedly installed on the inner side of the right mounting groove and is fitted on the outside of the right thermal wire.

5. The aerosol fire extinguishing device for electrical cabinets according to claim 2 or 3, characterized in that... A base is fixedly installed on the lower side of the outer casing, and an adhesive layer is fixedly installed on the lower side of the base.

6. The aerosol fire extinguishing device for electrical cabinets according to claim 4, characterized in that... A base is fixedly installed on the back of the outer casing, and an adhesive layer is fixedly installed on the back of the base.

7. The aerosol fire extinguishing device for electrical cabinets according to claim 5, characterized in that... The upper left side of the base has a left fixing groove with an opening facing forward. A left connecting pin is fixedly installed on the lower inner side of the left fixing groove. A left hanging piece is rotatably installed on the outer side of the left connecting pin, and its rear side contacts the inner wall of the rear part of the left fixing groove. A left lifting hole that runs through the front and back is provided on the upper front side of the left hanging piece. The upper right side of the base has a right fixing groove with an opening facing forward. A right connecting pin is fixedly installed on the lower inner side of the right fixing groove. A right hanging piece that runs through the front and back is rotatably installed on the outer side of the right connecting pin, and its rear side contacts the inner wall of the rear part of the right fixing groove. A right lifting hole that runs through the front and back is provided on the upper front side of the right hanging piece.

8. The aerosol fire extinguishing device for electrical cabinets according to claim 6, characterized in that... The upper left side of the base has a left fixing groove with an opening facing forward. A left connecting pin is fixedly installed on the lower inner side of the left fixing groove. A left hanging piece is rotatably installed on the outer side of the left connecting pin, and its rear side contacts the inner wall of the rear part of the left fixing groove. A left lifting hole that runs through the front and back is provided on the upper front side of the left hanging piece. The upper right side of the base has a right fixing groove with an opening facing forward. A right connecting pin is fixedly installed on the lower inner side of the right fixing groove. A right hanging piece that runs through the front and back is rotatably installed on the outer side of the right connecting pin, and its rear side contacts the inner wall of the rear part of the right fixing groove. A right lifting hole that runs through the front and back is provided on the upper front side of the right hanging piece.

9. The aerosol fire extinguishing device for electrical cabinets according to claim 7, characterized in that... A left limiting pin is fixed to the rear left side of the outer casing above the left connecting pin, and the right side of the left connecting pin is in contact with the left side of the left hanging piece. A right limiting pin is fixed to the rear right side of the outer casing above the right connecting pin, and the left side of the right connecting pin is in contact with the right side of the right hanging piece.

10. The aerosol fire extinguishing device for electrical cabinets according to claim 8, characterized in that... A left limiting pin is fixed to the rear left side of the outer casing above the left connecting pin, and the right side of the left connecting pin is in contact with the left side of the left hanging piece. A right limiting pin is fixed to the rear right side of the outer casing above the right connecting pin, and the left side of the right connecting pin is in contact with the right side of the right hanging piece.

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