CN213724538U - Fire extinguishing device suitable for power distribution cabinet - Google Patents

Fire extinguishing device suitable for power distribution cabinet Download PDF

Info

Publication number
CN213724538U
CN213724538U CN202022010379.8U CN202022010379U CN213724538U CN 213724538 U CN213724538 U CN 213724538U CN 202022010379 U CN202022010379 U CN 202022010379U CN 213724538 U CN213724538 U CN 213724538U
Authority
CN
China
Prior art keywords
power distribution
distribution cabinet
signal
dry powder
rodless cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022010379.8U
Other languages
Chinese (zh)
Inventor
王松伟
贾小冬
李春旭
米东波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin Xinda Iron and Steel Co Ltd
Original Assignee
Jilin Xinda Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin Xinda Iron and Steel Co Ltd filed Critical Jilin Xinda Iron and Steel Co Ltd
Priority to CN202022010379.8U priority Critical patent/CN213724538U/en
Application granted granted Critical
Publication of CN213724538U publication Critical patent/CN213724538U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

A fire extinguishing apparatus suitable for a power distribution cabinet comprises a sensor part, a joint part, a sliding rail, a moving vehicle, a control part, a travel switch, a rodless cylinder and a high-pressure dry powder bottle; the control part is connected with the sensor part, the moving vehicle, the travel switch and the rodless cylinder; the joint part is arranged on a top plate of the power distribution cabinet; the sliding rail is arranged right above the power distribution cabinet; the moving vehicle and the travel switch are both arranged on the slide rail; the rodless cylinder is arranged on the moving vehicle; the high-pressure dry powder bottle is arranged on the rodless cylinder; the sensor part is arranged in the power distribution cabinet. The utility model provides high fire extinguishing efficiency.

Description

Fire extinguishing device suitable for power distribution cabinet
Technical Field
The utility model relates to a fire extinguishing apparatus, especially a fire extinguishing apparatus suitable for electricity distribution room belongs to switch board technical field.
Background
The power distribution cabinet is generally placed in a power distribution room or outdoors, and when the power distribution cabinet is positioned in the power distribution room, the fire prevention measures of the power distribution cabinet generally adopt fire extinguishing media sprayed by a spray header on the ceiling of the power distribution room to extinguish fire; the traditional fire extinguishing mode of a distribution room generally adopts suspended dry powder, a heptafluoropropane pipe network, a carbon dioxide pipe network and the like to carry out fire extinguishing operation; the roof of the distribution room is provided with a metal pipeline, and the pipeline sprays fire extinguishing medium to extinguish indoor flame; the start of the spray header of the metal pipeline is controlled by a smoke sensor and a temperature sensor, and the spray header of the metal pipeline can be started only when the smoke sensor and the temperature sensor are started simultaneously; however, if the point of fire is inside the switch board, smog and heat radiation in the structure confined switch board are difficult to be escaped, the dangerous situation that fires also can not be sensed to the smoke transducer and the temperature sensor on roof, this can lead to when the sensor senses the condition of a fire, the switch board has been burnt out completely, cause the huge loss that can't retrieve, in order to avoid the emergence of this kind of condition, need the extinguishing device of a special switch board, it can in time respond to the inside fire of switch board to require it, and in time put out the flame, protect the switch board.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a extinguishing device suitable for switch board, it not only can discover the fire in the switch board the very first time, but also can in time put out the flame in the switch board.
The problem is solved through following technical scheme:
a fire extinguishing apparatus suitable for a power distribution cabinet comprises a sensor part, a joint part, a sliding rail, a moving vehicle, a control part, a travel switch, a rodless cylinder and a high-pressure dry powder bottle; the control part is connected with the sensor part, the moving vehicle, the travel switch and the rodless cylinder; the joint part is arranged on a top plate of the power distribution cabinet; the sliding rail is arranged right above the power distribution cabinet; the moving vehicle and the travel switch are both arranged on the slide rail; the rodless cylinder is arranged on the moving vehicle; the high-pressure dry powder bottle is arranged on the rodless cylinder; the sensor part is arranged in the power distribution cabinet; the moving vehicle comprises a vehicle body, wheels and a motor; the motor is connected with wheels, and the vehicle body is arranged on the slide rail through the wheels; the rodless cylinder comprises a cylinder body and a sliding block; the cylinder body is arranged on the lower end face of the vehicle body; the sliding block is arranged on the cylinder body; the high-pressure dry powder bottle comprises a bottle body, dry powder, a fixed partition plate and a cylindrical nozzle; the bottle body is arranged on the sliding block, and the axial lead direction of the bottle body is a vertical direction; the cylindrical nozzle is arranged at the lowest end of the bottle body, and a fixed partition plate is arranged in the cylindrical nozzle; the dry powder is arranged in the bottle body, and high-pressure nitrogen is filled in the bottle body; the joint portion includes a cylindrical joint and a thin film; the cylindrical joint penetrates through a top plate of the power distribution cabinet; the film is arranged in the cylindrical joint; the diameter of the outer wall of the cylindrical joint is equal to that of the inner wall of the cylindrical nozzle; the sensor part comprises a temperature sensor and a smoke sensor; and the temperature sensor and the smoke sensor are both arranged in the power distribution cabinet.
The fire extinguishing device suitable for the power distribution cabinet is characterized in that the control part comprises a CPU1, a CPU2 and a CPU 3; the signal output ends of the temperature sensor and the smoke sensor are connected with a CPU1 through an A/D converter, and the RFid module is connected with the signal input end of a CPU 1; the signal output end of the CPU1 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the signal output end of the travel switch is connected with the CPU2 through an A/D converter, and the RFid module is connected with the signal input end of the CPU 2; the signal output end of the CPU2 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the CPU3 receives signals from a mobile communication network through a communication module, and the signals of the mobile communication network come from a control center; the signal output end of the CPU3 is connected with the signal control end of the rodless cylinder through a D/A converter; and the signal output end of the CPU3 is connected with a motor signal control end through a D/A converter.
The fire extinguishing device suitable for the power distribution cabinet is additionally provided with the calibration rod; the calibration rods are axially and symmetrically arranged by taking the cylindrical joint as a circle center; the inner diameter of a circle defined by the calibration rod is equal to the outer diameter of the outer wall of the bottle body.
Above-mentioned extinguishing device suitable for switch board, be provided with the sawtooth on the circumference of the top of cylindric joint.
The utility model discloses an effectual condition of a fire of monitoring in the switch board of sensor part to the automatic control locomotive makes it shift the high-pressure dry powder bottle to the top of switch board on fire, and sprays the dry powder in the switch board on fire, and the effectual flame of putting out the switch board, avoids having improved fire extinguishing efficiency because of the unnecessary loss of having caused slowly putting out a fire.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural view of the control part of the present invention;
FIG. 3 is a schematic cross-sectional view of the high-pressure dry powder bottle of the present invention;
fig. 4 is a schematic sectional view of the joint portion of the present invention.
The list of labels in the figure is: 1. the device comprises a sensor part, a connector part, 2-1 cylindrical connectors, 2-2 films, 3 sliding rails, 4 moving vehicles, 5 control parts, 6 travel switches, 7 rodless cylinders, 8 high-pressure dry powder bottles, 8-1 bottle bodies, 8-2 dry powder, 8-3 fixed partition plates, 8-4 cylindrical nozzles, 9 calibration rods and 10 sawteeth.
Detailed Description
Referring to fig. 1, 2, 3 and 4, the present invention includes a sensor part 1, a joint part 2, a slide rail 3, a moving vehicle 4, a control part 5, a travel switch 6, a rodless cylinder 7 and a high-pressure dry powder bottle 8; in order to automatically complete the whole fire extinguishing operation, a control part is arranged, and the control part can control all the components to act cooperatively, so that the aim of extinguishing fire is fulfilled; the control part 5 is connected with the sensor part 1, the moving vehicle 4, the travel switch 6 and the rodless cylinder 7; the joint part 2 is arranged on a top plate of the power distribution cabinet; the joint part 2 is used for injecting external dry powder into the power distribution cabinet and providing a channel communicated with the outside for the power distribution cabinet; the slide rail 3 is arranged right above the power distribution cabinet; the moving vehicle 4 and the travel switch 6 are both arranged on the slide rail 3; the moving vehicle 4 is used for driving the high-pressure dry powder bottle 8 for fire extinguishing to move to an ignition point; the travel switch 6 is arranged above each power distribution cabinet and used for acquiring the position of the moving vehicle 4 in real time, the travel switch 6 is arranged above each power distribution cabinet, when the moving vehicle 4 moves to the travel switch 6 and triggers the travel switch 6, the axial lead of the cylindrical nozzle 8-4 is just coincided with the axial lead of the cylindrical joint 2-1 below, and the cylindrical nozzle 8-4 can vertically move downwards and is accurately butted with the cylindrical joint 2-1; the rodless cylinder 7 is arranged on the moving vehicle 4; the rodless cylinder 7 is used for driving the high-pressure dry powder bottle 8 to move downwards, so that dry powder is injected into the power distribution cabinet through the joint part 2; the high-pressure dry powder bottle 8 is arranged on the rodless cylinder 7; the sensor part 1 is arranged in the power distribution cabinet; the sensor part 1 is used for monitoring whether a fire accident occurs in the power distribution cabinet; the moving vehicle 4 comprises a vehicle body, wheels and a motor; the motor is connected with wheels, and the vehicle body is arranged on the slide rail 3 through the wheels; the rodless cylinder 7 comprises a cylinder body and a sliding block; the cylinder body is arranged on the lower end face of the vehicle body; the sliding block is arranged on the cylinder body, and the moving direction of the sliding block is a vertical direction; the high-pressure dry powder bottle 8 comprises a bottle body 8-1, dry powder 8-2, a fixed partition plate 8-3 and a cylindrical nozzle 8-4; the bottle body 8-1 is arranged on the sliding block, and the axis line direction of the bottle body 8-1 is a vertical direction; the bottle body 8-1 is driven by the slide block to move up and down; the cylindrical nozzle 8-4 is arranged at the lowest end of the bottle body 8-1, and a fixed partition plate 8-3 is arranged in the cylindrical nozzle 8-4; the cylindrical nozzle 8-4 is butted with the cylindrical joint 2-1, and dry powder is injected into the power distribution cabinet; the bottle body 8-1 is filled with dry powder 8-2 and high-pressure nitrogen, the outlet of the cylindrical nozzle 8-4 is provided with a fixed partition plate 8-3 so as to seal the dry powder in the bottle body 8-1 well when the dry powder does not need to be sprayed, and the fixed partition plate 8-3 has enough hardness to resist the high pressure in the bottle; the dry powder 8-2 is arranged in the bottle body 8-1, and high-pressure nitrogen is filled in the bottle body 8-1; the joint part 2 comprises a cylindrical joint 2-1 and a film 2-2; the cylindrical joint 2-1 penetrates through a top plate of the power distribution cabinet; the film 2-2 is arranged in the cylindrical joint 2-1; the cylindrical joint 2-1 is used for being communicated with the inside and the outside of the power distribution cabinet, so that dry powder can be conveniently sprayed into the power distribution cabinet; the film 2-2 is used for sealing an outlet of the cylindrical connector 2-1, when no fire occurs and dry powder is not required to be injected, the cylindrical connector 2-1 is sealed, impurities such as dust and the like are prevented from entering the power distribution cabinet, the film 2-2 has elasticity and can be torn under certain pressure, and the film 2-2 can be easily torn when the dry powder is injected with high-pressure nitrogen; the diameter of the outer wall of the cylindrical joint 2-1 is equal to the diameter of the inner wall of the cylindrical nozzle 8-4; the cylindrical joint 2-1 is butted with the cylindrical nozzle 8-4 in a mode that the cylindrical nozzle 8-4 is sleeved and inserted into the cylindrical joint 2-1, so that dry powder is injected into the power distribution cabinet; the sensor portion 1 includes a temperature sensor and a smoke sensor; temperature sensor and smoke transducer all set up in the switch board, can only arouse the signal of catching fire when temperature sensor and smoke transducer are triggered simultaneously.
In order to ensure that the cylindrical nozzle 8-4 can be accurately butted to the cylindrical joint 2-1, a calibration rod 9 is additionally arranged; the calibration rods 9 are axially and symmetrically arranged by taking the cylindrical joint 2-1 as a circle center; the inner diameter of a circle defined by the calibration rod 9 is equal to the outer diameter of the outer wall of the bottle body 8-1, and the calibration rod 9 can regulate the vertical precision of the bottle body 8-1, so that the cylindrical nozzle 8-4 at the lowest end of the bottle body 8-1 is accurately inserted into the cylindrical joint 2-1.
In order to enable the cylindrical joint 2-1 and the cylindrical nozzle 8-4 to be more smoothly butted to puncture the fixed partition 8-3, the uppermost circumference of the cylindrical joint 2-1 is provided with saw teeth 10, and the saw teeth 10 can help the fixed partition 8-3 to be more quickly broken.
In order to automatically control the fire extinguishing action, the utility model is provided with a control part 5; the control portion 5 includes a CPU1, a CPU2, and a CPU 3; the signal output ends of the temperature sensor and the smoke sensor are connected with the CPU1 through an A/D converter, the RFid module is connected with the signal input end of the CPU1, and the RFid module on the CPU1 is used for helping the control center to judge which power distribution cabinet the signals of the temperature sensor and the smoke sensor come from; the signal output end of the CPU1 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the signal output end of the travel switch 6 is connected with the CPU2 through an A/D converter, the RFid module is connected with the signal input end of the CPU2, and the RFid module on the CPU2 is used for helping a control center to judge which travel switch 6 the signal comes from; the signal output end of the CPU2 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the CPU3 receives signals from a mobile communication network through a communication module, and the signals of the mobile communication network come from a control center; the signal output end of the CPU3 is connected with the signal control end of the rodless cylinder 7 through a D/A converter; and the signal output end of the CPU3 is connected with a motor signal control end through a D/A converter.
The fire extinguishing operation is as follows: when a fire occurs in a certain power distribution cabinet, the temperature sensor and the smoke sensor in the power distribution cabinet on fire connect sensed signals to the CPU1 through the A/D converter, the signal input end of the CPU1 is also connected with the RFid module, the signal output end of the CPU1 transmits the signals to the mobile communication network through the communication module, the mobile communication network transmits the signals to the control center, and the RFid module connected with the input end of the CPU1 is used for enabling the control center to distinguish which power distribution cabinet has the fire, so that the function of identity recognition is provided; after the control center receives the signal from the CPU1, the motor on the moving vehicle 4 is started after analysis, the moving vehicle 4 moves towards the direction of the power distribution cabinet on the slide rail 3, the travel switch 6 along the line is continuously triggered until the moving vehicle 4 touches the corresponding travel switch 6 above the ignition power distribution cabinet, the corresponding travel switch 6 above the ignition power distribution cabinet connects the signal to the CPU2 through the A/D converter, after the control center receives the signal from the travel switch 6, the control center judges whether the travel switch 6 is the travel switch 6 above the ignition power distribution cabinet, if the pairing is successful, the control center transmits the signal to the CPU3, the CPU3 controls the cylindrical motor on the moving vehicle 4 to stop moving, at the moment, the nozzle 8-4 is just suspended right above the cylindrical joint 2-1, the CPU3 controls the rodless cylinder 7 to drive the body 8-1 to vertically move downwards, until the cylindrical nozzle 8-4 is inserted on the cylindrical joint 2-1, the dry powder in the bottle is sprayed into the ignition power distribution cabinet, thereby realizing the purpose of fire extinguishing.
The utility model discloses the model of well CPU module is AT89C 1051.

Claims (4)

1. The utility model provides a extinguishing device suitable for switch board, its characterized in that: the device comprises a sensor part (1), a joint part (2), a sliding rail (3), a moving vehicle (4), a control part (5), a travel switch (6), a rodless cylinder (7) and a high-pressure dry powder bottle (8); the control part (5) is connected with the sensor part (1), the moving vehicle (4), the travel switch (6) and the rodless cylinder (7); the joint part (2) is arranged on a top plate of the power distribution cabinet; the sliding rail (3) is arranged right above the power distribution cabinet; the moving vehicle (4) and the travel switch (6) are both arranged on the sliding rail (3); the rodless cylinder (7) is arranged on the moving vehicle (4); the high-pressure dry powder bottle (8) is arranged on the rodless cylinder (7); the sensor part (1) is arranged in the power distribution cabinet; the moving vehicle (4) comprises a vehicle body, wheels and a motor; the motor is connected with wheels, and the vehicle body is arranged on the slide rail (3) through the wheels; the rodless cylinder (7) comprises a cylinder body and a sliding block; the cylinder body is arranged on the lower end face of the vehicle body; the sliding block is arranged on the cylinder body; the high-pressure dry powder bottle (8) comprises a bottle body (8-1), dry powder (8-2), a fixed partition plate (8-3) and a cylindrical nozzle (8-4); the bottle body (8-1) is arranged on the sliding block, and the axial lead direction of the bottle body (8-1) is vertical; the cylindrical nozzle (8-4) is arranged at the lowest end of the bottle body (8-1), and a fixed partition plate (8-3) is arranged in the cylindrical nozzle (8-4); the dry powder (8-2) is arranged in the bottle body (8-1), and high-pressure nitrogen is filled in the bottle body (8-1); the joint part (2) comprises a cylindrical joint (2-1) and a film (2-2); the cylindrical joint (2-1) penetrates through a top plate of the power distribution cabinet; the film (2-2) is arranged in the cylindrical joint (2-1); the diameter of the outer wall of the cylindrical joint (2-1) is equal to that of the inner wall of the cylindrical nozzle (8-4); the sensor part (1) comprises a temperature sensor and a smoke sensor; and the temperature sensor and the smoke sensor are both arranged in the power distribution cabinet.
2. Fire extinguishing apparatus applicable to distribution cabinets according to claim 1, characterized in that: the control portion (5) includes a CPU1, a CPU2, and a CPU 3; the signal output ends of the temperature sensor and the smoke sensor are connected with a CPU1 through an A/D converter, and the RFid module is connected with the signal input end of a CPU 1; the signal output end of the CPU1 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the signal output end of the travel switch (6) is connected with the CPU2 through an A/D converter, and the RFid module is connected with the signal input end of the CPU 2; the signal output end of the CPU2 transmits a signal to a mobile communication network through a communication module, and the mobile communication network transmits the signal to a control center; the CPU3 receives signals from a mobile communication network through a communication module, and the signals of the mobile communication network come from a control center; the signal output end of the CPU3 is connected with the signal control end of the rodless cylinder (7) through a D/A converter; and the signal output end of the CPU3 is connected with a motor signal control end through a D/A converter.
3. Fire extinguishing apparatus suitable for distribution cabinets according to claim 2, characterized in that: a calibration rod (9) is additionally arranged; the calibration rods (9) are axially and symmetrically arranged by taking the cylindrical joint (2-1) as a circle center; the inner diameter of a circle defined by the calibration rod (9) is equal to the outer diameter of the outer wall of the bottle body (8-1).
4. Fire extinguishing apparatus suitable for distribution cabinets according to claim 3, characterized in that: the circumference of the uppermost end of the cylindrical joint (2-1) is provided with sawteeth (10).
CN202022010379.8U 2020-09-15 2020-09-15 Fire extinguishing device suitable for power distribution cabinet Active CN213724538U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022010379.8U CN213724538U (en) 2020-09-15 2020-09-15 Fire extinguishing device suitable for power distribution cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022010379.8U CN213724538U (en) 2020-09-15 2020-09-15 Fire extinguishing device suitable for power distribution cabinet

Publications (1)

Publication Number Publication Date
CN213724538U true CN213724538U (en) 2021-07-20

Family

ID=76843636

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022010379.8U Active CN213724538U (en) 2020-09-15 2020-09-15 Fire extinguishing device suitable for power distribution cabinet

Country Status (1)

Country Link
CN (1) CN213724538U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113457057A (en) * 2021-09-02 2021-10-01 南通勤润自动化科技有限公司 Automatic production line for mechanical part production
CN114333215A (en) * 2022-01-07 2022-04-12 深圳市明圣电气有限公司 Fire monitoring system and method
CN115253121A (en) * 2022-06-29 2022-11-01 苏州市绿捷能售电有限公司 Intelligent emergency fire-fighting system for electricity sale
CN115634401A (en) * 2022-10-07 2023-01-24 国网湖北省电力有限公司黄石供电公司 Fire-fighting monitoring and fire-extinguishing mechanism of high-voltage switch cabinet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113457057A (en) * 2021-09-02 2021-10-01 南通勤润自动化科技有限公司 Automatic production line for mechanical part production
CN113457057B (en) * 2021-09-02 2021-11-19 南通勤润自动化科技有限公司 Automatic production line for mechanical part production
CN114333215A (en) * 2022-01-07 2022-04-12 深圳市明圣电气有限公司 Fire monitoring system and method
CN115253121A (en) * 2022-06-29 2022-11-01 苏州市绿捷能售电有限公司 Intelligent emergency fire-fighting system for electricity sale
CN115634401A (en) * 2022-10-07 2023-01-24 国网湖北省电力有限公司黄石供电公司 Fire-fighting monitoring and fire-extinguishing mechanism of high-voltage switch cabinet
CN115634401B (en) * 2022-10-07 2023-03-28 国网湖北省电力有限公司黄石供电公司 Fire-fighting monitoring and fire-extinguishing mechanism of high-voltage switch cabinet

Similar Documents

Publication Publication Date Title
CN213724538U (en) Fire extinguishing device suitable for power distribution cabinet
CN110538404A (en) Automatic lithium battery fire extinguishing system
CN211454756U (en) Tunnel fire alarm and fire extinguishing system
CN116906838A (en) Carbon dioxide conveying pipeline leakage early warning positioning device and method
CN210644958U (en) Fire-fighting system for monitoring and disposing spontaneous combustion of coal bunker
CN203404623U (en) Urban gas pipe network leakage monitoring system based on intelligent balls
CN110193152B (en) Control method, device and control system for fire extinguishing of building
CN107961479A (en) A kind of tunnel intelligent fire-fighting system
CN103480102B (en) Dry powder extinguishing installation in tunnel on intelligent patrol detection equipment and method
CN205080713U (en) Domestic gas leaks security system
CN219481404U (en) Automatic fire extinguisher capable of spraying comprehensively
CN212118850U (en) High in clouds automatic control's intelligent fire water monitor
CN210302117U (en) A intelligent extinguishing device for electric motor car lithium cell case
CN218153677U (en) Gas transmission monitoring device
CN111282185A (en) High in clouds automatic control's intelligent fire water monitor
CN202028088U (en) Flue fire preventing and extinguishing device and circuit control system thereof
CN212624323U (en) Remote monitoring system for fire control suitable for subway high-speed railway
CN114344788A (en) Indoor intelligent fire control guarantee device based on thing networking
CN114821940A (en) Fire alarm of plastics tray production line
CN107666119A (en) A kind of power distribution cabinet door with fire-extinguishing function concurrently
CN220778876U (en) Fault self-diagnosis device
CN218920506U (en) Be applied to power system's automatic monitoring facilities
CN208865078U (en) A kind of automotive engine test bench automatic alarm fire plant
CN219095116U (en) Coke oven top inspection robot
CN207591150U (en) A kind of piston type explosion suppressor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant