Box-type substation with fire extinguishing function

Abstract

The invention relates to a box-type substation with a fire extinguishing function, which comprises a box body, a box cover assembly is mounted at the top end of the box body through bolts, a fire extinguishing structure is arranged in the box cover assembly, the box cover assembly comprises a supporting plate piece, and a ventilation groove for communicating the outside with the inside of the box body is formed in the end part of the supporting plate piece. A dust screen component is installed in the ventilation groove and comprises a plurality of basic screen units which are adjacently connected, each basic screen unit comprises a memory metal sheet and a dust-proof filter screen, one end of each memory metal sheet is connected with the dust-proof filter screen, and the other end of each dust-proof filter screen is connected to the memory metal sheet of the adjacent basic screen unit; the memory metal sheets deform after being heated to close the ventilation grooves, automatic fire extinguishing can be achieved when a fire disaster occurs, the interior of the box-type substation is automatically closed, air is isolated, and reburning is prevented.

Description

Technical Field

[0001] The invention relates to a box-type substation with a fire extinguishing function, belonging to the technical field of substation equipment. Background Art

[0002] Box-type substation, also called prefabricated substation or prefabricated substation, is a high-voltage switchgear. It replaces the original civil power distribution room and substation, integrates transformer step-down, low-voltage power distribution and other functions, and is installed in a movable steel structure box. It is suitable for urban network construction and transformation, and is widely used in mines, factories, enterprises, oil and gas fields and wind power stations.

[0003] For example, a fireproof box-type substation with application number CN201711032782.7 can conduct real-time detection of the working conditions and environmental conditions inside the box-type substation, and can promptly and effectively discover problems with the substation. When a fire occurs in the box, it can promptly issue an alarm message and send fire alarm information to the staff's mobile phones and other terminals to remind the staff to take timely measures. At the same time, the fireproof plate is pushed upward by the push rod to connect the fireproof plate to the sealing groove, thereby realizing the closed state inside the box-type substation, isolating the air, and preventing the spread of fire.

[0004] However, the closing of the ventilation windows of this structure requires the assistance of staff, which makes it impossible to extinguish the fire in time, causing serious damage to the box-type substation. Therefore, it is urgent to design a box-type substation with fire extinguishing function to solve the above problems. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a box-type substation with a fire extinguishing function, which can automatically extinguish the fire when a fire occurs and automatically seal the interior of the box-type substation to isolate the air and prevent re-ignition.

[0006] The technical solution of the present invention is as follows:

[0007] A box-type substation with a fire extinguishing function comprises a box body, a box cover assembly is installed on the top of the box body by bolts, a fire extinguishing structure is arranged in the box cover assembly, the box cover assembly comprises a support plate, a ventilation groove connecting the outside and the inside of the box body is opened at the end of the support plate, and a dustproof net component is installed inside the ventilation groove, the dustproof net component comprises a plurality of adjacently connected basic net units, the basic net unit comprises a memory metal sheet and a dustproof filter, one end of the memory metal sheet is connected to the dustproof filter, and the other end of the dustproof filter is connected to the memory metal sheet of the adjacent basic net unit; the memory metal sheet is deformed and closes the ventilation groove after being heated.

[0008] Among them, the memory metal sheet includes a long section and a short section, one end of the long section and the top of one end of the short section are connected to form an inverted T shape, and the inverted T-shaped memory metal sheet unfolds into a planar structure after heating, the outer end of the long section is connected to the dust filter, and the other end of the dust filter is connected to the top of one end of the short section of the adjacent basic mesh unit, and the other end of the dust filter is close to one end of the long section of the adjacent basic mesh unit and does not interfere with each other; an accommodation groove is opened inside the ventilation groove, wherein the short section of the outermost basic mesh unit on one side is fixed to the bottom of the accommodation groove, and the remaining short sections slide horizontally on the bottom of the accommodation groove.

[0009] Among them, a deformation structure is provided at one end of the short-circuit section close to the dust filter of the adjacent basic mesh unit; the deformation structure includes a flexible shell, the space between the flexible shell and the end of the short-circuit section is filled with electrorheological fluid, and the outer end of the flexible shell is provided with a first electrode block; the other end of the short-circuit section is provided with a gourd-shaped locking groove, and the inner end of the gourd-shaped locking groove is provided with a second electrode block, and the first electrode block and the second electrode block are in contact with each other to provide an activation signal for the electrorheological fluid.

[0010] Wherein, two electromagnet blocks with different poles are arranged on the short-circuit section, the two electromagnet blocks are respectively located at two ends of the gourd-shaped locking groove, and the electromagnet blocks are activated by contacting the first electrode block and the second electrode block.

[0011] Among them, a shell is installed on the top outer wall of the pallet part by bolts, storage tanks are installed on the outer walls on both sides of the top of the pallet part by bolts, and a solenoid valve 1 is installed between the two storage tanks through a pipeline, the solenoid valve 1 extends to the inside of the box, a feed valve is plugged into one end of the storage tank, a smoke detector and a temperature and humidity sensor are installed on the pallet part by bolts, and the detection ends of the smoke detector and the temperature and humidity sensor are both located inside the box, a radar module is also installed on the pallet part by bolts, an alarm is installed on the outer walls on both sides of the bottom of the pallet part by bolts, a multi-position controller is also installed on the pallet part by bolts, and the multi-position controller is communicatively connected with the alarm, radar module, smoke detector, temperature and humidity sensor, and solenoid valve 1 through wires.

[0012] Among them, a dehumidification component is provided on the outer wall of the support plate, and the dehumidification component includes a tube shell 1, and a solenoid valve 2 is threadedly connected to one end of the tube shell, a blower 1 is installed on the outer wall of one side of the tube shell by bolts, and the blower 1 and the tube shell 1 are interconnected; a connecting valve pipe 1 is provided at one end of the blower, and one end of the connecting valve pipe 1 extends to the interior of the box body; a dehumidification module is provided inside the tube shell, and a PTC heater is installed on the outer wall of one side of the tube shell by bolts, and one end of the PTC heater extends to the interior of the dehumidification module.

[0013] Among them, a heat dissipation component is installed on the support plate by bolts, and the heat dissipation component includes a tube shell 2, a blower 2 is installed on the tube shell 2 by bolts, and the blower 2 and the tube shell 2 are interconnected, and a connecting valve pipe 2 is provided on the outer wall of one side of the blower 2, and the output end of the connecting valve pipe 2 extends to the inside of the box body; a refrigerator is installed on the outer wall of one side of the tube shell 2 by bolts, and a fin component is installed on the outer wall of one side of the refrigerator by bolts, and the fin component extends to the inside of the tube shell 2.

[0014] Wherein, limited slideways are provided on both sides of the bottom end of the placement groove, and both sides of the short-circuit section extend and are inserted into the limited slideways.

[0015] Wherein, a heating coil is arranged on the surface of the memory metal sheet, and the heating coil is communicatively connected with the smoke detector.

[0016] The present invention has the following beneficial effects:

[0017] The present invention, through the provision of a dustproof net component and the characteristics of a memory metal sheet, can maintain the normal operation of the ventilation slot at room temperature, thereby allowing air to circulate between the inside and outside of the substation; when a fire occurs, the memory metal sheet can be deformed under the action of temperature changes, and the deformed memory metal sheet pulls the various components to form a sealing structure, thereby isolating the air circulation between the inside and outside of the substation, and can extinguish the fire through the asphyxiation method, while assisting the fire extinguishing agent in the storage tank to extinguish the fire, and can prevent the re-ignition of the internal fire due to external air circulation. At the same time, this process can be fully automatic without the assistance of staff.

[0018] The present invention is equipped with a smoke detector, a storage tank, and a solenoid valve. When the smoke detector detects a fire inside a box, an alarm will be activated to remind surrounding personnel that a fire has occurred in the box-type substation. Subsequently, the solenoid valve will be activated to spray the fire extinguishing agent in the storage tank into the box, thereby achieving timely extinguishing of the fire inside the box and reducing the loss of the box-type substation.

[0019] The present invention sets up a radar module, which can detect whether there are people around the box. When someone is detected, the alarm will be activated to remind the surrounding people to stay away from the box, so as to prevent children and pedestrians from accidentally touching the box-type substation and getting injured.

[0020] The present invention sets a dehumidification component. When the temperature and humidity sensor detects that the inside of the box is humid, the blower is started to make the air inside the box flow inside the tube shell. In this process, the moisture absorption module can absorb water vapor in the air, making the box dry, thereby improving the moisture-proof ability of the inside of the box.

[0021] The present invention provides a heat dissipation component. When the electrical appliances inside the box are in operation, the blower 2 will start, causing the air inside the box to flow inside the tube shell 2. In this process, the refrigerator will cool the air inside the tube shell 2 through the fin member, causing the air with reduced temperature to flow into the box, thereby accelerating the heat dissipation of the electrical appliances inside the box. At the same time, the heat dissipation in this process is in a closed state, which can prevent external dust and other impurities from entering the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the planar structure of the box cover assembly of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view of the structure of the support plate of the present invention;

[0025] Figure 4 This is a bottom view of the structure of the support plate of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the dehumidification component of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the heat dissipation component of the present invention;

[0028] Figure 7 A half-section diagram of the installation of the dust-proof net component of the present invention;

[0029] Figure 8 A half-section view of the structure of the enclosed ventilation slot of the dustproof net component of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the dustproof net component of the present invention;

[0031] Fig.10 It is a schematic diagram of the closed structure of the dustproof net component of the present invention;

[0032] Fig.11 It is a schematic diagram of activation of the deformable structure of the present invention;

[0033] Fig.12 It is a schematic diagram of the inactivated deformable structure of the present invention.

[0034] The reference numerals in the figure are as follows:

[0035] 1. Box body; 2. Box cover assembly; 3. Pallet; 4. Shell; 5. Dehumidification assembly; 7. Smoke detector; 8. Storage tank; 9. Heat dissipation assembly; 10. Ventilation slot; 11. Feed valve; 12. Temperature and humidity sensor; 13. Solenoid valve 1; 14. Radar module; 15. Dustproof net component; 16. Alarm; 17. Tube shell 1; 18. Desiccant module; 19. PTC heater; 20. Blower 1; 21. Solenoid valve 2; 22. Connection Valve tube one; 23, tube shell two; 24, refrigerator; 25, fin member; 26, blower two; 27, connecting valve tube two; 151, memory metal sheet; 152, dust filter; 153, flexible shell; 154, first electrode block; 155, gourd-shaped locking groove; 156, second electrode block; 157, electromagnet block; 158, electrorheological fluid; 101, placement groove; 102, limit slide; 1511, long section; 1512, short section. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] See also Figures 1 to 12 , the invention provides a technical solution:

[0038] A box-type substation with a fire extinguishing function comprises a box body 1, a box cover assembly 2 is installed on the top of the box body 1 by bolts, a fire extinguishing structure is arranged in the box cover assembly 2, the box cover assembly 2 comprises a support plate 3, a ventilation slot 10 connecting the outside with the inside of the box body 1 is opened at the end of the support plate 3, the ventilation slot 10 is convenient for air to enter and exit the box cover assembly 2, and a dustproof net component 15 is arranged inside the ventilation slot 10, the dustproof net component 15 comprises a plurality of adjacently connected basic net units, the basic net unit comprises a memory metal sheet 151 and a dustproof filter 152, one end of the memory metal sheet 151 is connected to the dustproof filter 152, and the other end of the dustproof filter 152 is connected to the memory metal sheet 151 of the adjacent basic net unit; the memory metal sheet 151 is deformed and closes the ventilation slot 10 after being heated;

[0039] Specifically, the memory metal sheet 151 includes a long connecting section 1511 and a short connecting section 1512. One end of the long connecting section 1511 is connected to the top of one end of the short connecting section 1512 to form an inverted T shape. After being heated, the inverted T-shaped memory metal sheet 151 unfolds into a planar structure. The outer end of the long connecting section 1511 is connected to the dust filter 152. The other end of the dust filter 152 is connected to the top of one end of the short connecting section 1512 of the adjacent basic mesh unit. The other end of the dust filter 152 is close to one end of the long connecting section 1511 of the adjacent basic mesh unit and does not interfere with each other. For ease of understanding, the basic mesh unit at room temperature is an acute triangle, and the acute triangle One side of the shape is shorter, and the shorter side is not connected to the other side, that is, the short-circuit section 1512 is the shorter side, and the other end of the short-circuit section 1512 is not connected to the dust filter 152, and when heated, the memory metal sheet 151 is unfolded, and the overall base mesh unit is an obtuse triangle, and the obtuse angle of the obtuse triangle is the angle between the short-circuit section 1512 and the long section 1511; a placement groove 101 is opened inside the ventilation groove 10, wherein the short-circuit section 1512 of the outermost base mesh unit on one side is fixed to the bottom of the placement groove 101, and the remaining short-circuit sections 1512 slide horizontally on the bottom of the placement groove 101;

[0040] Under normal conditions, since the short-circuit sections 1512 are arranged at intervals, the ventilation slot 10 can function normally for ventilation, and the dust filter 152 can play a corresponding dust-proof effect; when a fire occurs, the memory metal sheet 151 is deformed under the drive of high temperature. Since the short-circuit section 1512 of the outermost base mesh unit is fixed to the bottom of the placement slot 101, the short-circuit section 1512 is used as the fixed end, and the long-circuit section 1511 on the short-circuit section 1512 is expanded and deformed, so that the dust filter 152 of the same base mesh unit is pulled to move. At the same time, the displacement of the dust filter 152 will cause the adjacent base mesh unit to move. The short-circuit section 1512 of the base net unit is displaced, and by opening limited slideways 102 on both sides of the bottom end of the placement groove 101, the two sides of the short-circuit section 1512 are extended and inserted into the limited slideways 102; the displacement of the short-circuit section 1512 can always be maintained at the same horizontal line, and the long section 1511 of each base net unit is deformed, and the above steps are repeated; one end of the short-circuit section 1512 can be tightened and fitted to the other end of the adjacent short-circuit section 1512, that is, a plurality of short-circuit sections 1512 are formed to fit closely to each other and thus close the ventilation slot 10, thereby isolating the internal air and preventing the flame from reigniting;

[0041] As a preferred embodiment, a deformation structure is provided at one end of the short-circuit section 1512 close to the dust filter 152 of the adjacent basic network unit; the deformation structure can make the adjacent short-circuit sections 1512 connected more closely after the fire, and isolate the air more thoroughly; the deformation structure includes a flexible shell 153, and the space between the flexible shell 153 and the end of the short-circuit section 1512 is filled with an electrorheological fluid 158, and the outer end of the flexible shell 153 is provided with a first electrode block 154; the other end of the short-circuit section 1512 is provided with a gourd-shaped locking groove 155, and the inner end of the gourd-shaped locking groove 155 is provided with a second electrode block 156, and the first electrode block 154 and the second electrode block 156 are in contact to provide an activation signal for the electrorheological fluid 158; specifically, when a fire occurs, the memory metal sheet 151 is deformed under the drive of high temperature, and the adjacent short-circuit sections 1512 are close to each other, that is, the flexible shell 153 is constantly close to the gourd-shaped locking groove 155, so that the electrorheological fluid 158 is in contact with the first electrode block 154 and the second electrode block 156. 8 is not activated, the electrorheological fluid 158 in the space between the flexible housing 153 and the end of the short-circuit section 1512 is in liquid state, and the flexible housing 153 can be deformed and converted into a shape that matches the gourd-shaped locking groove 155 by squeezing the gourd-shaped locking groove 155. When the first electrode block 154 and the second electrode block 156 come into contact, the electrorheological fluid 158 inside can be activated, making the electrorheological fluid 158 solid, thereby causing the gourd-shaped locking groove 155 to contact the flexible housing 153. The deformation structures are mutually buckled and locked; at the same time, two electromagnet blocks 157 with different poles are arranged on the short-circuit section 1512, and the two electromagnet blocks 157 are respectively located at the two ends of the gourd-shaped locking groove 155, and the electromagnet blocks 157 are activated by contacting the first electrode block 154 and the second electrode block 156. When activated, the first electrode block 154 and the second electrode block 156 attract each other and tightly buckle the concave part of the gourd-shaped locking groove 155, further sealing the gap to prevent air from entering;

[0042] In order to respond to the fire more quickly, a heating coil may be provided on the surface of the memory metal sheet 151, and the heating coil is connected to the smoke detector 7 for communication. When the smoke detector 7 detects the fire, the heating coil is quickly activated to deform the memory metal sheet 151.

[0043] A shell 4 is installed on the outer wall of the top of the support plate 3 by bolts, and storage tanks 8 are installed on the outer walls on both sides of the top of the support plate 3 by bolts. Fire extinguishing agent is stored in the storage tank 8, and a solenoid valve 13 is installed between the two storage tanks 8 through a pipeline. The model of the solenoid valve 13 is preferably a matching coil 1440-1AC220V. When a fire occurs, the fire extinguishing agent in the storage tank 8 will be sprayed out through the solenoid valve 13 to extinguish the fire point inside the box body 1. The solenoid valve 13 extends to the inside of the box body 1. A feed valve 11 is inserted at one end of the storage tank 8. The feed valve 11 is convenient for workers to add fire extinguishing agent to the storage tank 8. A smoke detector 7 and a temperature and humidity sensor 12 are installed on the outer wall of one side of the support plate 3 by bolts. The model of the smoke detector 7 is preferably 12-24v The smoke alarm is wired to the Internet (without sound) and can detect whether a fire occurs inside the box 1. The temperature and humidity sensor 12 is preferably LY900, which can detect the temperature and humidity inside the box 1. The smoke detector 7 and the temperature and humidity sensor 12 extend to the inside of the box 1. A radar module 14 is bolted to the outer wall of one side of the pallet 3. The radar module 14 is preferably an Arduino ultrasonic radar. Alarms 16 are bolted to the outer walls on both sides of the bottom of the pallet 3. The alarm 16 is preferably JBT-6190. The radar module 14 can detect whether there are people around the box 1. When someone is detected, the alarm 16 will be activated to remind people around to stay away from the box 1 to prevent children and pedestrians from accidentally touching the box-type substation and getting injured.

[0044] A dehumidification component 5 is provided on the outer wall of one side of the top of the support plate 3, and one end of the dehumidification component 5 extends to the inside of the box body 1. The dehumidification component 5 includes a tube shell 17, and one end of the tube shell 17 is threadedly connected with a solenoid valve 21. The model of the solenoid valve 21 is preferably a matching coil 1440-1AC220V. A blower 20 is installed on the outer wall of one side of the tube shell 17 by bolts. The model of the blower 20 is preferably a DC12032 blower, and the blower 20 and the tube shell 17 are interconnected. A connecting valve pipe 22 is provided at one end of the blower 20. The connecting valve pipe 22 is composed of a pipeline and a valve, and one end of the connecting valve pipe 22 extends to the inside of the box body 1. The inside of the tube shell 17 A moisture absorption module 18 is provided. The moisture absorption module 18 is composed of active molecular sieve particles and can absorb moisture in the air. When the temperature and humidity sensor 12 detects that the inside of the box body 1 is humid, the blower 20 will start to make the air inside the box body 1 flow inside the tube shell 17. In this process, the moisture absorption module 18 can absorb water vapor in the air, making the box body 1 dry, thereby improving the moisture-proof ability inside the box body 1. A PTC heater 19 is installed on the outer wall of one side of the tube shell 17 by bolts. The model of the PTC heater 19 is preferably ZGBNETEE-PTC-long strip aluminum shell-01. The PTC heater 19 will start regularly when the heat dissipation component 9 dissipates heat, thereby realizing The desiccant module 18 is heated and dried, and then the solenoid valve 1 is started, so that the heated water vapor flows out of the tube shell 17, and one end of the PTC heater 19 extends to the inside of the desiccant module 18; a heat dissipation component 9 is installed on the outer wall of one side of the support plate 3 by bolts, and the heat dissipation component 9 includes a tube shell 23, and a blower 26 is installed on the outer wall of one side of the tube shell 23 by bolts. The model of the blower 26 is preferably a DC12032 blower, and the blower 26 and the tube shell 23 are interconnected. A connecting valve pipe 27 is provided on the outer wall of one side of the blower 26. The connecting valve pipe 27 is composed of a pipeline and a valve, and the output end of the connecting valve pipe 27 extends to the inside of the box body 1, and the pipe A cooler 24 is installed on the outer wall of one side of the shell 23 by bolts. The model of the cooler 24 is preferably II-VIMarlow semiconductor refrigeration chip (TEC), and a fin member 25 is installed on the outer wall of one side of the cooler 24 by bolts. When the electrical appliances inside the box 1 are operating, the blower 26 will start, so that the air inside the box 1 flows inside the tube shell 23, and in this process, the cooler 24 will cool the air inside the tube shell 23 through the fin member 25, so that the air with reduced temperature flows into the box 1, thereby reducing the temperature inside the box 1 and accelerating the heat dissipation of the electrical appliances inside the box 1. The fin member 25 extends to the inside of the tube shell 23.

[0045] When the box-type substation is in operation, the multi-position controller will be powered on and started, and then according to the parameters pre-set by the workers, the multi-position controller will control the temperature and humidity sensor 12 to start, and detect the temperature and humidity inside the box 1. At the same time, when the electrical appliances inside the box 1 are powered on, the multi-position controller will control the blower 26 to start, so that the air inside the box 1 flows inside the tube shell 23, and in this process, the multi-position controller will control the refrigerator 24 to start, and then the refrigerator 24 will cool the air inside the tube shell 23 through the fin member 25, so that the air with reduced temperature flows into the box 1, thereby reducing the temperature inside the box 1 and accelerating the heat dissipation of the electrical appliances inside the box 1. When the temperature and humidity sensor 12 detects that the inside of the box 1 is humid, the multi-position controller will control the blower 20 to start, so that the air inside the box 1 flows inside the tube shell 1 17. In this process, the moisture absorption module 18 can absorb water vapor in the air. The box body 1 becomes dry, which improves the moisture-proof ability of the inside of the box body 1. When the smoke detector 7 detects a fire inside the box body 1, the multi-position controller will control the alarm 16 to start, reminding the surrounding personnel that a fire has occurred in the box-type substation, and subsequently the multi-position controller will control the solenoid valve 21 to start, so that the fire extinguishing agent in the storage tank 8 is sprayed into the inside of the box body 1, so as to achieve timely extinguishing of the fire inside the box body 1 and reduce the loss of the box-type substation. In addition, the multi-position controller will also control the radar module 14 to start, and detect whether there is anyone around the box body 1. When someone is detected, the multi-position controller will control the alarm 16 to start, reminding the surrounding personnel to stay away from the box body 1 to prevent children and pedestrians from accidentally touching the box-type substation and getting injured. At the same time, the dustproof net component 15 can be switched to a closed state when a fire occurs, so that the internal space of the substation is isolated from the outside world, blocking the source of air, avoiding the flame from reigniting and playing a role in auxiliary fire extinguishing.

[0046] At the same time, in order to ensure rigor, the gaps between the box door, the limiting slide 102 and the like can be made with the electrorheological fluid mentioned above or other existing sealing structures.

[0047] As a preferred embodiment, after the fire is extinguished, that is, when the smoke detector 7 or the memory metal returns to normal, the power is cut off between the first electrode block 154 and the second electrode block 156, and the state can be restored to the original state.

[0048] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A box-type substation with fire extinguishing function, comprising a box body (1), characterized in that: A box cover assembly (2) is installed at the top of the box body (1) by bolts, and a fire extinguishing structure is arranged inside the box cover assembly (2). The box cover assembly (2) includes a support plate (3), and a ventilation slot (10) is opened at the end of the support plate (3) to connect the outside with the inside of the box body (1), and a dustproof net component (15) is installed inside the ventilation slot (10). The dustproof net component (15) includes a plurality of adjacently connected basic net units, and the basic net unit includes a memory metal sheet (151) and a dustproof filter (152). One end of the memory metal sheet (151) is connected to the dustproof filter (152), and the other end of the dustproof filter (152) is connected to the memory metal sheet (151) of the adjacent basic net unit; after being heated, the memory metal sheet (151) deforms to close the ventilation slot (10).

2. A box-type substation with fire extinguishing function as claimed in claim 1, characterized in that: The memory metal sheet (151) comprises a long connecting section (1511) and a short connecting section (1512), one end of the long connecting section (1511) and the top of one end of the short connecting section (1512) are connected to form an inverted T shape, and the inverted T-shaped memory metal sheet (151) unfolds into a planar structure after being heated, the outer end of the long connecting section (1511) is connected to the dust filter (152), and the other end of the dust filter (152) is connected to the adjacent base network unit. The top of one end of the short-circuit section (1512) is connected, and the other end of the dust filter (152) is close to one end of the long-circuit section (1511) of the adjacent basic net unit without interfering with each other; a placement groove (101) is provided inside the ventilation groove (10), wherein the short-circuit section (1512) of the outermost basic net unit on one side is fixed to the bottom of the placement groove (101), and the other short-circuit sections (1512) slide horizontally on the bottom of the placement groove (101).

3. A box-type substation with fire extinguishing function as claimed in claim 2, characterized in that: A deformation structure is provided at one end of the short-circuit section (1512) close to the dust filter (152) of the adjacent basic network unit; the deformation structure comprises a flexible shell (153); the space between the flexible shell (153) and the end of the short-circuit section (1512) is filled with electrorheological fluid (158); the outer end of the flexible shell (153) is provided with a first electrode block (154); the other end of the short-circuit section (1512) is provided with a gourd-shaped locking groove (155); the inner end of the gourd-shaped locking groove (155) is provided with a second electrode block (156); the first electrode block (154) and the second electrode block (156) are in contact to provide an activation signal for the electrorheological fluid (158).

4. A box-type substation with fire extinguishing function as claimed in claim 3, characterized in that: The short-circuit section (1512) is provided with two electromagnet blocks (157) with different polarities. The two electromagnet blocks (157) are respectively located at two ends of the gourd-shaped locking groove (155), and the electromagnet blocks (157) are activated by contact between the first electrode block (154) and the second electrode block (156).

5. The box-type substation with fire extinguishing function as claimed in claim 1, characterized in that: A housing (4) is mounted on the top outer wall of the support plate (3) by means of bolts, storage tanks (8) are mounted on both sides of the top outer walls of the support plate (3) by means of bolts, and a solenoid valve (13) is mounted between the two storage tanks (8) by means of a pipeline, the solenoid valve (13) extends into the interior of the box (1), a feed valve (11) is plugged into one end of the storage tank (8), a smoke detector (7) and a temperature and humidity sensor (12) are mounted on the support plate (3) by means of bolts, and the smoke detector (7) The detection ends of the temperature and humidity sensor (12) are both located inside the box (1); the support plate (3) is also equipped with a radar module (14) by bolts; the outer walls on both sides of the bottom of the support plate (3) are both equipped with an alarm (16) by bolts; the support plate (3) is also equipped with a multi-position controller by bolts, and the multi-position controller is respectively connected to the alarm (16), the radar module (14), the smoke detector (7), the temperature and humidity sensor (12), and the solenoid valve (13) by wires to communicate with each other.

6. A box-type substation with fire extinguishing function as claimed in claim 5, characterized in that: The outer wall of the support plate (3) is provided with a dehumidification component (5), and the dehumidification component (5) includes a tube shell (17), one end of which is threadedly connected to a solenoid valve (21), and a blower (20) is installed on the outer wall of one side of the tube shell (17) by bolts, and the blower (20) and the tube shell (17) are interconnected; one end of the blower (20) is provided with a connecting valve pipe (22), and one end of the connecting valve pipe (22) extends to the interior of the box body (1); a dehumidification module (18) is provided inside the tube shell (17), and a PTC heater (19) is installed on the outer wall of one side of the tube shell (17) by bolts, and one end of the PTC heater (19) extends to the interior of the dehumidification module (18).

7. A box-type substation with fire extinguishing function as claimed in claim 5, characterized in that: A heat dissipation component (9) is installed on the support plate (3) by bolts, and the heat dissipation component (9) includes a second tube shell (23), and a second blower (26) is installed on the second tube shell (23) by bolts, and the second blower (26) and the second tube shell (23) are interconnected, and a connecting valve pipe (27) is provided on the outer wall of one side of the blower (26), and the output end of the connecting valve pipe (27) extends to the inside of the box body (1); a refrigerator (24) is installed on the outer wall of one side of the tube shell (23) by bolts, and a fin component (25) is installed on the outer wall of one side of the refrigerator (24) by bolts, and the fin component (25) extends to the inside of the second tube shell (23).

8. A box-type substation with fire extinguishing function as claimed in claim 2, characterized in that: Limiting slideways (102) are provided on both sides of the bottom end of the placement groove (101), and both sides of the short-circuit section (1512) extend and are inserted into the limiting slideways (102).

9. A box-type substation with fire extinguishing function as claimed in claim 5, characterized in that: A heating coil is provided on the surface of the memory metal sheet (151), and the heating coil is communicatively connected to the smoke detector (7).

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