CN115957465A - Fire extinguishing mechanism of computer cabinet - Google Patents
Fire extinguishing mechanism of computer cabinet Download PDFInfo
- Publication number
- CN115957465A CN115957465A CN202310048018.8A CN202310048018A CN115957465A CN 115957465 A CN115957465 A CN 115957465A CN 202310048018 A CN202310048018 A CN 202310048018A CN 115957465 A CN115957465 A CN 115957465A
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- Prior art keywords
- cabinet
- fire extinguishing
- air guide
- plate
- pipe
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Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a fire extinguishing mechanism of a computer cabinet, which relates to the technical field of computer cabinets and comprises a cabinet body and a fire extinguishing mechanism, wherein the cabinet body comprises a cabinet side plate, a cabinet top plate, a cabinet bottom plate, a cabinet front plate, a cabinet rear plate, a mounting bar and a storage disc, and the upper side of the storage disc is used for placing electrical or electronic equipment; the fire extinguishing mechanism is provided with a plurality of and evenly distributed in the cabinet body, the fire extinguishing mechanism is used for fire extinguishing protection of electric or electronic equipment during fire, the fire extinguishing mechanism comprises a connecting strip, a fire extinguishing tank, an impeller shell, a connecting sheet, a connecting shaft and an air injection pipe. The fire extinguishing mechanism of the computer cabinet has the characteristics of reasonable design scheme, ingenious and compact structure, convenience in disassembly, assembly and maintenance and low manufacturing cost.
Description
Technical Field
The invention relates to the technical field of computer cabinets, in particular to a fire extinguishing mechanism of a computer cabinet.
Background
A cabinet is a freestanding or self-supporting enclosure for housing electrical or electronic equipment. Cabinets are typically configured with doors, removable or non-removable side panels and back panels.
The cabinet is an indispensable component in the electrical equipment and is a carrier of the electrical control equipment. Typically made of cold rolled steel sheet or alloy. Can provide the protection functions of water resistance, dust prevention, electromagnetic interference resistance and the like for the storage equipment. The cabinets are generally classified into a server cabinet, a network cabinet, a console cabinet, and the like.
The rack has good technical performance, but some present server racks do not possess the function of fire prevention fire control, and when the conflagration breaing out, the server rack is burnt out very easily, and then causes losing of data.
Disclosure of Invention
The invention aims to provide a fire extinguishing mechanism of a computer cabinet, which aims to overcome the defects caused in the prior art.
The utility model provides a fire extinguishing mechanism of computer cabinet, includes the rack body and puts out a fire the mechanism, wherein:
the cabinet body comprises cabinet side plates, a cabinet top plate, a cabinet bottom plate, a cabinet front plate, a cabinet rear plate, mounting bars and a storage plate, wherein the upper side of the storage plate is used for placing electric or electronic equipment;
the fire extinguishing mechanism is provided with a plurality of and evenly distributed in the cabinet body, the fire extinguishing mechanism is used for fire extinguishing protection of electric or electronic equipment during fire, the fire extinguishing mechanism comprises a connecting strip, a fire extinguishing tank, an impeller shell, a connecting sheet, a connecting shaft and an air injection pipe.
Preferably, the cabinet curb plate is equipped with a pair ofly and controls parallel distribution, cabinet roof and cabinet bottom plate welded fastening respectively in the upper and lower both ends of two cabinet curb plates, cabinet front bezel and cabinet back plate hinged joint are both sides around two cabinet curb plates respectively, the bottom of cabinet bottom plate evenly is equipped with the thermovent and all installs the heat dissipation fan in the inboard of thermovent, the dust cover is installed in the top of heat dissipation fan to the cabinet bottom plate, the mounting bar is equipped with a pair ofly and corresponds and installs on the inner wall of two cabinet curb plates, put the thing dish and be equipped with a plurality of and connect to on the lateral wall of two mounting bars through hand screw one, the supporting legs is evenly installed to the downside of cabinet bottom plate.
Preferably, the connecting strip is horizontally connected to the side wall of the mounting strip through a second hand-screwed screw, a pair of support plates are symmetrically connected to the front end and the rear end of the connecting strip, the upper sides of the support plates are connected with air guide bowls, air guide tubes are coaxially welded in the middles of the air guide bowls, the fire extinguishing tank is provided with a pair of connecting hoops and is inversely arranged right above the two air guide tubes, the lower part of the fire extinguishing tank is connected with a pair of connecting hoops through long bolts, a glass tube is vertically connected between the connecting hoop and the air guide bowls which are positioned on the same side, thermal expansion liquid is filled in the glass tube, a compression spring is sleeved outside the glass tube, the upper end and the lower end of the compression spring are respectively connected with the connecting hoops and the air guide bowls, the impeller shell is provided with a pair of inclined lower parts which are positioned on the two air guide tubes, an upward vertical air inlet tube is welded on the side surface of the impeller shell, and the air inlet tube positioned on the same side are communicated with the air guide tubes, the middle of the impeller shell is rotatably connected with an impeller shaft, the outer end part of the impeller shaft is fixedly provided with an impeller, the side surface of the impeller shell is coaxially connected with an impeller cover, the middle of the impeller cover is vertically fixed with an air outlet pipe, the connecting piece is vertically welded in the middle of the connecting piece, the front end and the back end of the connecting shaft are arranged and rotatably connected with the lower end part of the connecting piece, the front end and the back end of the connecting shaft are symmetrically connected with a pair of linkage strips, the overhanging ends of the linkage strips are both provided with rectangular linkage grooves, the inner end part of the impeller shaft is fixedly provided with a rotating strip, the overhanging ends of the rotating strips are vertically fixed with linkage blocks, the linkage blocks positioned at the same side are slidably connected in the linkage grooves, the front end and the back end of the gas ejector pipe are arranged and connected between the two linkage strips, the rectangular array on the side surface of the gas ejector pipe is provided with gas ejecting holes, and the front end and the back end of the gas ejector pipe are symmetrically provided with a pair of gas connecting pipes, a corrugated pipe is connected between the air receiving pipe and the air outlet pipe which are positioned at the same side.
Preferably, the cabinet rear plate, the dust cover and the storage plate are all provided with grid-shaped airflow channels.
Preferably, the upper end of the air duct is coaxially connected with an air guide hopper, and a rubber pad is adhered to the inner wall of the air guide hopper.
Compared with the prior art, the fire extinguishing mechanism of the computer cabinet has the following advantages:
when detecting the inside electric or electronic equipment of rack body when conflagration breaing out, high temperature can arouse that the intraductal thermal expansion liquid of glass is heated the expansion and breaks the glass pipe, the jar that goes out fire descends rapidly under dead weight and compression spring's effect, make the air cock of jar that goes out fire insert the air guide mouth fast in, carbon dioxide gas in the jar that goes out fire passes through the air cock rapidly, the air duct, the intake pipe enters into in the impeller shell, and promote impeller and impeller shaft rapid rotation, afterwards, carbon dioxide enters into the jet-propelled pipe through the outlet duct and air receiving pipe, spout the electric or electronic equipment who catches fire through the fumarole on the jet-propelled pipe. In addition, the rotating impeller shaft drives the rotating strip to rotate, the rotating strip drives the linkage strip to swing up and down through the linkage block, and then the air injection pipe is driven to swing up and down synchronously, so that a larger ignition space is covered.
Drawings
Fig. 1 is a schematic overall three-dimensional structure of the present invention.
Fig. 2 is a schematic structural diagram of the cabinet body according to the present invention.
Fig. 3 to 4 are schematic structural views of the fire extinguishing mechanism of the present invention.
Fig. 5 to 6 are partially illustrated structural schematic views of the fire extinguishing mechanism.
Wherein:
10-a cabinet body; 101-cabinet side plate; 102-a cabinet top plate; 103-cabinet floor; 104-cabinet front panel; 105-cabinet back panel; 106-heat dissipation fan; 107-a dust cover; 108-mounting bars; 109-storage plate; 110-hand screw one; 111-supporting feet;
20-a fire extinguishing mechanism; 201-connecting strips; 202-hand screw II; 203-a support plate; 204-air guide bowl; 205-airway tube; 206-air guide hopper; 207-rubber pad; 208-fire extinguishing pots; 209-connecting hoop; 210-long bolt; 211-glass tube; 212-a compression spring; 213-impeller shell; 214-an intake pipe; 215-impeller shaft; 216-an impeller; 217-impeller cover; 218-an outlet pipe; 219-connecting piece; 220-a connecting shaft; 221-linkage bar; 221 a-linkage groove; 222-a rotating bar; 223-a linkage block; 224-gas lances; 224 a-gas injection holes; 225-air receiving pipe; 226-bellows.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, a fire extinguishing mechanism for a computer cabinet comprises a cabinet body 10 and a fire extinguishing mechanism 20, wherein:
the cabinet body 10 comprises a cabinet side plate 101, a cabinet top plate 102, a cabinet bottom plate 103, a cabinet front plate 104, a cabinet rear plate 105, a mounting bar 108 and a storage tray 109, wherein the upper side of the storage tray 109 is used for placing electric or electronic equipment;
In this embodiment, parallel distribution about cabinet curb plate 101 is equipped with a pair ofly, cabinet top plate 102 and cabinet bottom plate 103 welded fastening respectively are at the upper and lower both ends of two cabinet curb plates 101, cabinet front bezel 104 and cabinet back plate 105 be hinged joint in the front and back both sides of two cabinet curb plates 101 respectively, cabinet bottom plate 103's bottom evenly is equipped with the thermovent and all installs heat dissipation fan 106 in the inboard of thermovent, cabinet bottom plate 103 installs dust cover 107 in the top of heat dissipation fan 106, mounting bar 108 is equipped with a pair ofly and corresponds and installs on the inner wall of two cabinet curb plates 101, put thing dish 109 and be equipped with a plurality of and be connected to on the lateral wall of two mounting bars 108 through a hand screw 110, supporting legs 111 is evenly installed to cabinet bottom plate 103's downside.
In this embodiment, the connecting bar 201 is horizontally connected to the side wall of the mounting bar 108 by a second hand-screwed screw 202, the front and rear ends of the connecting bar 201 are symmetrically connected with a pair of support plates 203, the upper sides of the support plates 203 are both connected with an air guide bowl 204, an air guide tube 205 is coaxially welded in the middle of the air guide bowl 204, the fire extinguishing tank 208 is provided with a pair of support plates 203 and is inversely arranged right above the two air guide tubes 205, the lower part of the fire extinguishing tank 208 is connected with a pair of connecting hoops 209 through a long bolt 210, a glass tube 211 is vertically connected between the connecting hoop 209 and the air guide bowl 204 which are positioned on the same side, the glass tube 211 is filled with thermal expansion liquid, a compression spring 212 is sleeved outside the glass tube 211, the upper and lower ends of the compression spring 212 are respectively connected with the connecting hoop 209 and the air guide bowl 204, the impeller shell 213 is provided with a pair of air guide tubes and is arranged below the two air guide tubes 205, the side of the impeller shell 213 is welded with an air inlet pipe 214 which is vertically upward, the air inlet pipe 214 and the air guide pipe 205 which are positioned on the same side are communicated, the middle of the impeller shell 213 is rotatably connected with an impeller shaft 220, the outer end part of the impeller shaft 220 is fixed with an impeller 216, the side of the impeller shell 213 is coaxially connected with an impeller cover 217, the middle of the impeller cover 217 is vertically fixed with an air outlet pipe 218, a connecting piece 219 is vertically welded in the middle of the connecting strip 201, the connecting shaft 220 is arranged in the front-back direction and rotatably connected with the lower end part of the connecting piece 219, the front end and the rear end of the connecting shaft 220 are symmetrically connected with a pair of linkage strips 221, the overhanging ends of the linkage strips 221 are respectively provided with a rectangular linkage groove 221a, the inner end part of the impeller shaft 220 is fixed with a rotating strip 222, the overhanging end of the rotating strip 222 is vertically fixed with a linkage block 223, the linkage block 223 positioned on the same side is slidably connected in the linkage groove 221a, the gas injection pipe 224 is arranged in a front-back direction and connected between the two linkage strips 221, the rectangular array on the side surface of the gas injection pipe 224 is provided with gas injection holes 224a, the front end and the back end of the gas injection pipe 224 are symmetrically provided with a butt gas connection pipe 225, and a corrugated pipe 226 is connected between the gas connection pipe 225 and the gas outlet pipe 218 which are positioned on the same side.
In this embodiment, the cabinet back plate 105, the dust cover 107 and the storage tray 109 are all provided with grid-shaped airflow channels. A grid-type airflow channel on the cabinet rear plate 105 for the intake of outside cool air; a grid-type air flow passage on the dust cover 107 is used for discharging the internal hot air; the grid-shaped airflow channels on the tray 109 facilitate the airflow.
In this embodiment, an air guide funnel 206 is coaxially connected to an upper end of the air guide tube 205, and a rubber pad 207 is adhered to an inner wall of the air guide funnel 206. The air guide hopper 206 is additionally arranged, so that the air nozzle of the inactivation tank 208 can be inserted into the air guide pipe 205, the sealing performance between the air nozzle of the fire extinguishing tank 208 and the air guide hopper 206 is improved by additionally arranging the rubber pad 207, and the gas overflow is avoided.
When the fire extinguishing mechanism of the computer cabinet is actually applied, the fire extinguishing mechanism comprises the following working processes: the electric or electronic equipment is placed on the tray 109 inside the cabinet body 10 and covers the cabinet front plate 104 and the cabinet rear plate 105. When a fire disaster of the electric or electronic equipment inside the cabinet body 10 is detected, the high temperature causes thermal expansion liquid in the glass tube 211 to expand and break the glass tube 211, the fire extinguishing tank 208 rapidly descends under the action of self weight and the compression spring 212, so that the air nozzle of the fire extinguishing tank 208 is rapidly inserted into the air guide nozzle 205, carbon dioxide gas in the fire extinguishing tank 208 rapidly enters the impeller shell 213 through the air nozzle, the air guide tube 205 and the air inlet tube 214 and pushes the impeller 216 and the impeller shaft 215 to rapidly rotate, and then the carbon dioxide enters the gas jet pipe 224 through the gas outlet tube 218 and the air connecting tube 225 and is jetted to the fired electric or electronic equipment through the gas jet holes 224a on the gas jet pipe 224. In addition, the rotating vane 222 is driven by the rotating vane shaft 215 to rotate, and the rotating vane 222 drives the linkage vane 221 to swing up and down through the linkage block 223, so as to synchronously drive the gas injection pipe 224 to swing up and down, thereby covering a larger ignition space.
The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (5)
1. A fire extinguishing mechanism of a computer cabinet is characterized in that: including rack body (10) and fire extinguishing mechanism (20), wherein:
the cabinet body (10) comprises a cabinet side plate (101), a cabinet top plate (102), a cabinet bottom plate (103), a cabinet front plate (104), a cabinet rear plate (105), a mounting bar (108) and an object placing plate (109), wherein the upper side of the object placing plate (109) is used for placing electric or electronic equipment;
fire extinguishing mechanism (20) are equipped with a plurality of and evenly distributed in the inside of rack body (10), fire extinguishing mechanism (20) are used for the protection of putting out a fire to electric or electronic equipment when the conflagration, fire extinguishing mechanism (20) are including connecting strip (201), jar (208), impeller shell (213), connection piece (219), connecting axle (220), jet-propelled pipe (224) put out a fire.
2. The fire extinguishing mechanism of the computer cabinet according to claim 1, wherein: cabinet curb plate (101) are equipped with a pair of and control parallel distribution, cabinet roof (102) and cabinet bottom plate (103) be welded fastening in the upper and lower both ends of two cabinet curb plates (101) respectively, cabinet front bezel (104) and cabinet back plate (105) are hinged joint both sides around two cabinet curb plates (101) respectively, the bottom of cabinet bottom plate (103) evenly is equipped with the thermovent and all installs heat dissipation fan (106) in the inboard of thermovent, dust cover (107) are installed in the top of heat dissipation fan (106) in cabinet bottom plate (103), mounting bar (108) are equipped with a pair ofly and correspond and install on the inner wall of two cabinet curb plates (101), put thing dish (109) and be equipped with a plurality of and be connected to on the lateral wall of two mounting bar (108) through hand screw (110), supporting legs (111) are evenly installed to the downside of cabinet bottom plate (103).
3. The fire suppression mechanism of a computer cabinet according to claim 1, wherein: the connecting strip (201) is horizontally connected to the side wall of the mounting strip (108) through a second hand-screwed screw (202), the front end and the rear end of the connecting strip (201) are symmetrically connected with a pair of support plates (203), the upper sides of the support plates (203) are connected with air guide bowls (204), air guide pipes (205) are coaxially welded in the middles of the air guide bowls (204), the fire extinguishing tank (208) is provided with a pair of support plates (203) which are arranged right above the two air guide pipes (205) in an inverted mode, the lower portion of the fire extinguishing tank (208) is connected with a pair of connecting hoops (209) through long bolts (210), a glass pipe (211) is vertically connected between the connecting hoop (209) and the air guide bowls (204) on the same side, thermal expansion liquid is filled in the glass pipe (211), a compression spring (212) is sleeved on the outer side of the glass pipe (211), the upper end and the lower end of the compression spring (212) are respectively connected with the connecting hoop (209) and the air guide hoops (204), an inclined air guide pipe (205) is arranged below the impeller shell (213) on the same side, an air inlet pipe (214) is welded on the same side, and an impeller shell (214) is connected with a rotating impeller shaft (214) which is connected with an air guide pipe (214) on the same side, and an impeller shell (213) which is connected with an air guide pipe (220), the impeller comprises an impeller shell (213) and is characterized in that an impeller cover (217) is coaxially connected to the side face of the impeller shell (213), an air outlet pipe (218) is vertically fixed in the middle of the impeller cover (217), a connecting piece (219) is vertically welded in the middle of a connecting strip (201), a connecting shaft (220) is arranged in the front-back direction and rotatably connected to the lower end portion of the connecting piece (219), a pair of linkage strips (221) is symmetrically connected to the front end and the rear end of the connecting shaft (220), rectangular linkage grooves (221 a) are formed in the overhanging ends of the linkage strips (221), a rotating strip (222) is fixed to the inner end portion of the impeller shaft (220), linkage blocks (223) are vertically fixed to the overhanging ends of the rotating strip (222), the linkage blocks (223) located on the same side are slidably connected in the linkage grooves (221 a), an air injection pipe (224) is arranged in the front-back direction and is connected between the two linkage strips (221), air injection holes (224 a) are formed in the rectangular array on the side face of the air injection pipe (224), a pair of air connecting pipes (225) are symmetrically arranged at the front end and the back end and the air outlet pipe (225) located on the same side, and a corrugated pipe (226) are connected between the corrugated pipe (218).
4. The fire suppression mechanism of a computer cabinet according to claim 2, wherein: and grid-type airflow channels are arranged on the cabinet rear plate (105), the dust cover (107) and the object placing plate (109).
5. The fire extinguishing mechanism of the computer cabinet according to claim 3, wherein: the upper end of the air duct (205) is coaxially connected with an air guide hopper (206), and a rubber pad (207) is pasted on the inner wall of the air guide hopper (206).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310048018.8A CN115957465B (en) | 2023-01-31 | 2023-01-31 | Fire extinguishing mechanism of computer cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310048018.8A CN115957465B (en) | 2023-01-31 | 2023-01-31 | Fire extinguishing mechanism of computer cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115957465A true CN115957465A (en) | 2023-04-14 |
| CN115957465B CN115957465B (en) | 2024-04-23 |
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ID=87358140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310048018.8A Active CN115957465B (en) | 2023-01-31 | 2023-01-31 | Fire extinguishing mechanism of computer cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115957465B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980065234U (en) * | 1998-08-11 | 1998-11-25 | 박양원 | Automatic fire extinguishing system for electric switchboard and panel |
| CN208145267U (en) * | 2018-02-24 | 2018-11-27 | 天际明技术（深圳）有限公司 | A kind of modular data center with automatic fire extinguisher |
| CN113015393A (en) * | 2021-02-23 | 2021-06-22 | 南通理工学院 | Computer network safety arrangement convenient to maintain |
| CN215309823U (en) * | 2021-02-20 | 2021-12-28 | 丰县盛禾智能设备有限公司 | Novel forestry fire prevention median |
| CN216214870U (en) * | 2021-09-13 | 2022-04-05 | 马娟娟 | Electrical fireproof electrical cabinet |
-
2023
- 2023-01-31 CN CN202310048018.8A patent/CN115957465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980065234U (en) * | 1998-08-11 | 1998-11-25 | 박양원 | Automatic fire extinguishing system for electric switchboard and panel |
| CN208145267U (en) * | 2018-02-24 | 2018-11-27 | 天际明技术（深圳）有限公司 | A kind of modular data center with automatic fire extinguisher |
| CN215309823U (en) * | 2021-02-20 | 2021-12-28 | 丰县盛禾智能设备有限公司 | Novel forestry fire prevention median |
| CN113015393A (en) * | 2021-02-23 | 2021-06-22 | 南通理工学院 | Computer network safety arrangement convenient to maintain |
| CN216214870U (en) * | 2021-09-13 | 2022-04-05 | 马娟娟 | Electrical fireproof electrical cabinet |
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| Publication number | Publication date |
|---|---|
| CN115957465B (en) | 2024-04-23 |
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