CN103691081B - A kind of transformer ultra-fine dry powder extinguishing method - Google Patents

A kind of transformer ultra-fine dry powder extinguishing method Download PDF

Info

Publication number
CN103691081B
CN103691081B CN201310734152.XA CN201310734152A CN103691081B CN 103691081 B CN103691081 B CN 103691081B CN 201310734152 A CN201310734152 A CN 201310734152A CN 103691081 B CN103691081 B CN 103691081B
Authority
CN
China
Prior art keywords
extinguishing
transformer
fire
temperature
extinguishing device
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.)
Expired - Fee Related
Application number
CN201310734152.XA
Other languages
Chinese (zh)
Other versions
CN103691081A (en
Inventor
周爱纯
张德才
姜鹏建
孟繁超
刘冉
韩振华
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.)
BAODING TIANWEI ZHUOCHUANG ELECTRIC EQUIPMENT TECHNOLOGIES Co Ltd
Original Assignee
BAODING TIANWEI ZHUOCHUANG ELECTRIC EQUIPMENT TECHNOLOGIES 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 BAODING TIANWEI ZHUOCHUANG ELECTRIC EQUIPMENT TECHNOLOGIES Co Ltd filed Critical BAODING TIANWEI ZHUOCHUANG ELECTRIC EQUIPMENT TECHNOLOGIES Co Ltd
Priority to CN201310734152.XA priority Critical patent/CN103691081B/en
Publication of CN103691081A publication Critical patent/CN103691081A/en
Application granted granted Critical
Publication of CN103691081B publication Critical patent/CN103691081B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

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

Abstract

Patent of the present invention relates to a kind of transformer ultra-fine dry powder extinguishing method, belongs to transformer fire prevention field. Technical scheme is: in transformer outside (9), many extinguishing devices have been installed, every extinguishing device is made up of extinguishing device body (1), explosion diaphragm (2), ultra-fine dry powder (3), temperature-sensing magnetic power generation machine (4), cable (5), ignition controller (6), fixing gold utensil (7), extinguishing chemical is ultra-fine dry powder, in the time that transformer arrives the fire temperature of setting around, extinguishing device spurts facing to the whole fuselages of transformer (8), ultra-fine dry powder is sprayed at the diverse location on transformer, implements total flooding fire extinguishing. Cost of the present invention is low, speed soon, not resume combustion, environmental protection; Extinguishing device is pressed close to protected object, can rapidly fire be suffered from and being put out in bud, effectively reduces the loss that fire brings, and is conducive to resume production. When release, can not injure Field Force, the unit of the most applicable nobody class of holding station or key protection.

Description

A kind of transformer ultra-fine dry powder extinguishing method
Technical field
Patent of the present invention relates to a kind of transformer ultra-fine dry powder extinguishing method, belongs to transformer fire prevention field.
Background technology
At present, China transformer 220KV above on request, oil draining nitrogen filling formula fire extinguisher for transformer or foam spraying fire-extinguishing device have all been installed, 500KV has all installed foam spraying fire-extinguishing device or oil draining nitrogen filling formula fire extinguisher for transformer above, 110KV installs oil draining nitrogen filling formula fire extinguisher for transformer provincial standard (issue of Bureau of Technical Supervision of Hunan Province), and 110KV and above transformer have been realized and having been reported to the police and fire extinguishing. But foam spraying fire-extinguishing device exists between the large fire-fighting of the tediously long amount of pipeline and waits the problem that investment is large, oil draining nitrogen filling formula fire extinguisher for transformer to exist the problem that the rear note of error action of device work nitrogen causes accident. The following transformer of 35KV exists in a large number in the possibility of running breaking out of fire in addition, and how effectively controlling and put out low-voltage transformer equipment fire becomes a countries in the world difficult problem urgently to be resolved hurrily. At present, China there is no fire protection design, construction and the acceptance specification of the following transformer of 35KV aspect. Along with the fast development of China's wind-powered electricity generation construction project, solve the following transformer security against fire of 35KV problem and just seem particularly outstanding.
Summary of the invention
The object of patent of the present invention is to provide a kind of transformer ultra-fine dry powder extinguishing method, is the extinguishing device of a set of automatic detection simple in structure, highly reliable, independent and automatic fire-extinguishing function, effectively protects transformer, solves the problems referred to above that background technology exists.
Technical scheme of the present invention is:
A kind of transformer ultrafine dry powder extinguishing installation, in transformer outside, many extinguishing devices have been installed, extinguishing device is arranged on outside transformer oil sump, described extinguishing device is the ultrafine dry powder extinguishing installation that temperature-sensing magnetic power generation starts, every extinguishing device is made up of extinguishing device body, explosion diaphragm, ultra-fine dry powder, the mechanical, electrical cable of temperature-sensing magnetic power generation and the controller of getting angry, and extinguishing chemical is ultra-fine dry powder, and temperature-sensing magnetic power generation machine is connected to by cable on the ignition controller of extinguishing device body; The startup head of temperature-sensing magnetic power generation machine and extinguishing device spout are facing to the whole fuselages of transformer; In the time that transformer arrives the fire temperature of setting around, the startup head of temperature-sensing magnetic power generation machine starts ignition controller, get angry after controller action, in extinguishing device body, moment produces high pressure, ultra-fine dry powder rushes at the explosion diaphragm of spout, spurt facing to the whole fuselages of transformer, ultra-fine dry powder is sprayed at the diverse location on transformer, implements total flooding fire extinguishing.
The present invention is provided with fire extinguishing control flow and pressure switch, and when getting angry controller action, pressure switch action, will spurt the fire extinguishing control flow of signal feedback to master-control room, and then pass to background computer, realizes a distant place and reports to the police; The pressure drop warning node installation of pressure switch is being got angry on the terminal of controller, feeds back to master-control room fire extinguishing control flow.
Fire-fighting principle of the present invention adopts total flooding fire extinguishing, and blow-off velocity is fast, saves foamite amount, adds extinguishing chemical low price, so extinguishing device cost declines, volume reduces, and spurts rear no side effects, to transformer and various electrical equipment without damage; Extinguishing device by temperature actuated, does not need to control power supply, belongs to Passive Shape Control, the impact that when having overcome the impact of electromagnetic interference on extinguishing device and fire and occurring, frequent power-off brings.
Extinguishing device body is container bottle, there is no at ordinary times pressure in container bottle, has avoided extinction using gas to be subject to the shortcoming of temperature, process leakage, and only, in the time that fire starts, moment produces pressure and spurts, and is convenient to safeguard. Between extinguishing device and transformer inside, do not contact directly, after extinguishing device misoperation, transformer is not affected, overcome the harmful effect of water to electrical equipment in foam spray fire extinguishing, simultaneously, extinguishing chemical belongs to environmental protection insulating products, electrical equipment is free from side effects, so can reach the object of transformer safe operation.
Extinguishing device body is provided with fixing gold utensil, is convenient to fixed installation.
A kind of transformer ultra-fine dry powder extinguishing method, comprise following steps: 1. extinguishing device is the ultrafine dry powder extinguishing installation that temperature-sensing magnetic power generation starts, every extinguishing device is made up of extinguishing device body, explosion diaphragm, ultra-fine dry powder, the mechanical, electrical cable of temperature-sensing magnetic power generation and the controller of getting angry, extinguishing chemical is ultra-fine dry powder, and temperature-sensing magnetic power generation machine is connected to by cable on the ignition controller of extinguishing device body; The startup head of temperature-sensing magnetic power generation machine and extinguishing device spout are facing to the whole fuselages of transformer; In the time that transformer arrives the fire temperature of setting around, the startup head of temperature-sensing magnetic power generation machine starts ignition controller, get angry after controller action, in extinguishing device body, moment produces high pressure, ultra-fine dry powder rushes at the explosion diaphragm of spout, spurt facing to the whole fuselages of transformer, ultra-fine dry powder is sprayed at the diverse location on transformer, implements total flooding fire extinguishing;
2. the oil tank of transformer lightning of remaining silent is 135 DEG C~140 DEG C, and extinguishing device arranges temperature-sensitive fusible alloy, controls the startup head of temperature-sensing magnetic power generation machine, and the operating temperature of extinguishing device setting is 145 DEG C. Gas extinguishing control panel is set at the scene, master-control room arranges fire extinguishing control flow;
3. press both sides, the long limit of transformer, minor face both sides, high, normal, basic three positions, distribute extinguishing device by 12 positions, and extinguishing device is finally installed, and form fire extinguishing system;
4. the on-the-spot gas extinguishing control panel arranging, by fire extinguishing system Starting mode be divided into automatic control, manually control, three kinds of mechanical emergency manual operations.
Automatically control: when fire extinguishing system control mode selector switch is pushed to automated location, system is in automatic control state; In the time that temperature-sensitive fusible alloy temperature reaches 145 DEG C, this temperature-sensitive fusible alloy fusing comes off, and automatically starts extinguishing device and implements fire extinguishing; Spurt feedback signal by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Manually control: when fire extinguishing system control mode selector switch is pushed to manual position, system is in manual state of a control; When the condition of a fire is occurred in the protection zone of fire extinguishing system, on master-control room fire extinguishing control flow, press manual fire button, start and implement fire extinguishing; To spurt feedback signal, by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Mechanical emergency manual operation: when the condition of a fire is occurred in the protection zone of fire extinguishing system; while occurring that power-off or fire extinguishing control flow can not send fire extinguishing instruction; notify the relevant personnel to withdraw scene; then manual operation extinguishing device; on extinguishing device body, be provided with handle; depress handle and can open the explosion diaphragm of extinguishing device, implement manual operation fire extinguishing.
Good effect of the present invention is: transformer ultrafine dry powder extinguishing installation is more suitable for the fire suppression of low-voltage transformer, cost is low, speed soon, not resume combustion, environmental protection; Extinguishing device is pressed close to protected object, and system acting reaction is fast, can rapidly fire be suffered from and being put out in bud, effectively reduces the loss that fire brings, and is conducive to resume production. Device work is without power supply, is not subject to electromagnetism, vibrations or impacts and affect operating function, not because the ambient influnences such as oil smoke, dust, humidity cause visiting weakening of fiery function and misoperation occurs; Design, installation, easy maintenance, operating cost are low; When release, can not injure Field Force, the unit, particularly this extinguishing device of the most applicable use of low temperature environment of the most applicable nobody class of holding station or key protection.
Brief description of the drawings
Fig. 1 is embodiment of the present invention extinguishing device schematic diagram;
Fig. 2 is that the present invention arranges schematic diagram;
In figure: extinguishing device body 1, explosion diaphragm 2, ultra-fine dry powder 3, temperature-sensing magnetic power generation machine 4, cable 5, ignition controller 6, fixing gold utensil 7, transformer 8, transformer outside 9.
Detailed description of the invention
Below in conjunction with accompanying drawing, by example, the invention will be further described.
A kind of transformer ultrafine dry powder extinguishing installation, in transformer outside 9, many extinguishing devices have been installed, extinguishing device is arranged on outside transformer oil sump, described extinguishing device is the ultrafine dry powder extinguishing installation that temperature-sensing magnetic power generation starts, every extinguishing device is made up of extinguishing device body 1, explosion diaphragm 2, ultra-fine dry powder 3, temperature-sensing magnetic power generation machine 4, cable 5, ignition controller 6, fixing gold utensil 7, extinguishing chemical is ultra-fine dry powder, and temperature-sensing magnetic power generation machine 4 is connected to by cable 5 on the ignition controller 6 of extinguishing device body 1; The startup head of temperature-sensing magnetic power generation machine and extinguishing device spout are facing to the whole fuselages of transformer; In the time that transformer arrives the fire temperature of setting around, the startup head of temperature-sensing magnetic power generation machine starts ignition controller, get angry after controller 6 actions, in extinguishing device body, moment produces high pressure, ultra-fine dry powder 3 rushes at the explosion diaphragm 2 of spout, spurt facing to the whole fuselages of transformer 8, ultra-fine dry powder is sprayed at the diverse location on transformer 8, implements total flooding fire extinguishing.
The present invention is provided with fire extinguishing control flow and pressure switch, and when the controller 6 of getting angry moves, pressure switch action, will spurt the fire extinguishing control flow of signal feedback to master-control room, and then pass to background computer, realizes a distant place and reports to the police; The pressure drop warning node installation of pressure switch is being got angry on the terminal of controller 6, feeds back to master-control room fire extinguishing control flow.
Extinguishing device body is provided with fixing gold utensil 7, is convenient to fixed installation.
Embodiment more specifically:
The oil tank of transformer lightning of remaining silent is 135 DEG C~140 DEG C, and extinguishing device arranges temperature-sensitive fusible alloy, controls the startup head of temperature-sensing magnetic power generation machine, and the operating temperature of extinguishing device setting is 145 DEG C. Gas extinguishing control panel is set at the scene, master-control room arranges fire extinguishing control flow.
First the calculating transformer required clear space of putting out a fire, calculates foamite amount according to the fire extinguishing design concentration of relevant GB, calculates and needs altogether how many of dry powder extinguishing installations. Then, by both sides, the long limit of transformer, minor face both sides, high, normal, basic three positions, distribute extinguishing device by 12 positions, and extinguishing device is finally installed, and form fire extinguishing system.
The on-the-spot gas extinguishing control panel arranging, by fire extinguishing system Starting mode be divided into automatic control, manually control, three kinds of mechanical emergency manual operations.
Automatically control: when fire extinguishing system control mode selector switch is pushed to automated location, system is in automatic control state; In the time that temperature-sensitive fusible alloy temperature reaches 145 DEG C, this temperature-sensitive fusible alloy fusing comes off, and automatically starts extinguishing device and implements fire extinguishing; Spurt feedback signal by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Manually control: when fire extinguishing system control mode selector switch is pushed to manual position, system is in manual state of a control; When the condition of a fire is occurred in the protection zone of fire extinguishing system, on master-control room fire extinguishing control flow, press manual fire button, start and implement fire extinguishing; To spurt feedback signal, by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Mechanical emergency manual operation: when the condition of a fire is occurred in the protection zone of fire extinguishing system; while occurring that power-off or fire extinguishing control flow can not send fire extinguishing instruction; notify the relevant personnel to withdraw scene; then manual operation extinguishing device; on extinguishing device body, be provided with handle; depress handle and can open the explosion diaphragm of extinguishing device, implement manual operation fire extinguishing.

Claims (1)

1. a transformer ultra-fine dry powder extinguishing method, is characterized in that comprising following steps:
1. extinguishing device is the ultrafine dry powder extinguishing installation that temperature-sensing magnetic power generation starts, every extinguishing device is made up of extinguishing device body, explosion diaphragm, ultra-fine dry powder, temperature-sensing magnetic power generation machine (4), cable and ignition controller, extinguishing chemical is ultra-fine dry powder, and temperature-sensing magnetic power generation machine is connected to by cable on the ignition controller of extinguishing device body; The startup head of temperature-sensing magnetic power generation machine and extinguishing device spout are facing to the whole fuselages of transformer; In the time that transformer arrives the fire temperature of setting around, the startup head of temperature-sensing magnetic power generation machine starts ignition controller, get angry after controller action, in extinguishing device body, moment produces high pressure, ultra-fine dry powder rushes at the explosion diaphragm of spout, spurt facing to the whole fuselages of transformer, ultra-fine dry powder is sprayed at the diverse location on transformer, implements total flooding fire extinguishing;
2. the oil tank of transformer lightning of remaining silent is 135 DEG C~140 DEG C, and extinguishing device arranges temperature-sensitive fusible alloy, controls the startup head of temperature-sensing magnetic power generation machine, and the operating temperature of extinguishing device setting is 145 DEG C; Gas extinguishing control panel is set at the scene, master-control room arranges fire extinguishing control flow;
3. press both sides, the long limit of transformer, minor face both sides, high, normal, basic three positions, distribute extinguishing device by 12 positions, and extinguishing device is finally installed, and form fire extinguishing system;
4. the on-the-spot gas extinguishing control panel arranging, by fire extinguishing system Starting mode be divided into automatic control, manually control, three kinds of mechanical emergency manual operations;
Automatically control: when fire extinguishing system control mode selector switch is pushed to automated location, system is in automatic control state; In the time that temperature-sensitive fusible alloy temperature reaches 145 DEG C, this temperature-sensitive fusible alloy fusing comes off, and automatically starts extinguishing device and implements fire extinguishing; Spurt feedback signal by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Manually control: when fire extinguishing system control mode selector switch is pushed to manual position, system is in manual state of a control; When the condition of a fire is occurred in the protection zone of fire extinguishing system, on master-control room fire extinguishing control flow, press manual fire button, start and implement fire extinguishing; To spurt feedback signal, by gas on-site fire extinguishing control panel, signal is transferred to master-control room fire extinguishing control flow simultaneously;
Mechanical emergency manual operation: when the condition of a fire is occurred in the protection zone of fire extinguishing system, while occurring that power-off or fire extinguishing control flow can not send fire extinguishing instruction, notify the relevant personnel to withdraw scene, then manual operation extinguishing device, on extinguishing device body, be provided with handle, depress handle and can open the explosion diaphragm of extinguishing device, implement manual operation fire extinguishing;
In transformer outside (9), many extinguishing devices have been installed, extinguishing device is arranged on outside transformer oil sump, described extinguishing device is the ultrafine dry powder extinguishing installation that temperature-sensing magnetic power generation starts, every extinguishing device is made up of extinguishing device body (1), explosion diaphragm (2), ultra-fine dry powder (3), temperature-sensing magnetic power generation machine (4), cable (5), ignition controller (6), fixing gold utensil (7), extinguishing chemical is ultra-fine dry powder, and temperature-sensing magnetic power generation machine (4) is connected to by cable (5) on the ignition controller (6) of extinguishing device body (1); The startup head of temperature-sensing magnetic power generation machine and extinguishing device spout are facing to the whole fuselages of transformer; In the time that transformer arrives the fire temperature of setting around, the startup head of temperature-sensing magnetic power generation machine starts ignition controller, get angry after controller (6) action, in extinguishing device body, moment produces high pressure, ultra-fine dry powder (3) rushes at the explosion diaphragm (2) of spout, spurt facing to the whole fuselages of transformer (8), ultra-fine dry powder is sprayed at the diverse location on transformer (8), implements total flooding fire extinguishing; Be provided with fire extinguishing control flow and pressure switch, when getting angry controller (6) action, pressure switch action, will spurt the fire extinguishing control flow of signal feedback to master-control room, and then pass to background computer, realizes a distant place and reports to the police; The pressure drop warning node installation of pressure switch is being got angry on the terminal of controller (6), feeds back to master-control room fire extinguishing control flow; Extinguishing device body is provided with fixing gold utensil (7), is convenient to fixed installation; Extinguishing device body is container bottle, there is no at ordinary times pressure in container bottle.
CN201310734152.XA 2013-12-27 2013-12-27 A kind of transformer ultra-fine dry powder extinguishing method Expired - Fee Related CN103691081B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310734152.XA CN103691081B (en) 2013-12-27 2013-12-27 A kind of transformer ultra-fine dry powder extinguishing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310734152.XA CN103691081B (en) 2013-12-27 2013-12-27 A kind of transformer ultra-fine dry powder extinguishing method

Publications (2)

Publication Number Publication Date
CN103691081A CN103691081A (en) 2014-04-02
CN103691081B true CN103691081B (en) 2016-05-18

Family

ID=50352844

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310734152.XA Expired - Fee Related CN103691081B (en) 2013-12-27 2013-12-27 A kind of transformer ultra-fine dry powder extinguishing method

Country Status (1)

Country Link
CN (1) CN103691081B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104436477B (en) * 2014-12-01 2017-09-08 国家电网公司 The large-scale oily plant of transformer station integrates fire-fighting system and method
CN113476765A (en) * 2021-07-12 2021-10-08 许昌许继风电科技有限公司 Full-submergence automatic fire-fighting system for engine room of wind turbine generator and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201247915Y (en) * 2008-06-18 2009-05-27 青岛特锐德电气有限公司 Power distribution equipment with airosol fire-extinguishing means
CN202236997U (en) * 2011-10-13 2012-05-30 西安大隆含能科技有限公司 Temperature-sensing magnetic power generation starter for suspension type superfine dry powder extinguishing device
CN202459900U (en) * 2011-12-19 2012-10-03 江苏文德新能源有限公司 Fire prewarning fire-fighting unit of wind-driven generator
CN202506023U (en) * 2012-04-13 2012-10-31 邵阳市佳鑫电器设备制造有限公司 Automatic fire extinguishment box type transformer substation
CN202859970U (en) * 2011-02-18 2013-04-10 华锐风电科技(集团)股份有限公司 Fireproofing device, automatic fireproofing system and wind generating set

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201247915Y (en) * 2008-06-18 2009-05-27 青岛特锐德电气有限公司 Power distribution equipment with airosol fire-extinguishing means
CN202859970U (en) * 2011-02-18 2013-04-10 华锐风电科技(集团)股份有限公司 Fireproofing device, automatic fireproofing system and wind generating set
CN202236997U (en) * 2011-10-13 2012-05-30 西安大隆含能科技有限公司 Temperature-sensing magnetic power generation starter for suspension type superfine dry powder extinguishing device
CN202459900U (en) * 2011-12-19 2012-10-03 江苏文德新能源有限公司 Fire prewarning fire-fighting unit of wind-driven generator
CN202506023U (en) * 2012-04-13 2012-10-31 邵阳市佳鑫电器设备制造有限公司 Automatic fire extinguishment box type transformer substation

Also Published As

Publication number Publication date
CN103691081A (en) 2014-04-02

Similar Documents

Publication Publication Date Title
CN201889010U (en) Intelligent fire fighting system
CN201533958U (en) Intelligent fire extinguishing apparatus of oil extraction nitrogen injection type transformer
CN107185133A (en) A kind of energy-accumulating power station early warning and fire-fighting system
CN201469941U (en) Fire extinguisher for wind generating set
CN201612961U (en) Fire extinguishing plant and fire extinguishing system for wind power generator cabin
CN203935543U (en) Oil-drainage nitrogen-filling fire-extinguishing
CN102961842B (en) Fire alarm joint control system applied to chemical enterprise
CN103611224B (en) A kind of cable explosion-proof extinguishing device
CN105664405A (en) Fire detection pipe automatic fire extinguishing device used in alternating-current and direct-current power system in transformer substation
CN103691081B (en) A kind of transformer ultra-fine dry powder extinguishing method
CN201603324U (en) Automatic induction and atomization fire-extinguishing system of electric switch cabinet
CN206063618U (en) Electroheating type remote activation visits fire-tube type extinguishing device
CN202917805U (en) Intelligent safety distribution box
CN202961615U (en) Automatic fire extinguishing device for electric control cabinet
CN202506023U (en) Automatic fire extinguishment box type transformer substation
CN202859960U (en) Automatic ultrathin dry powder fire extinguishing system
CN102580273A (en) Novel oil immersion power transformer extinguishing device
CN205796339U (en) Chemical industry fire control system
CN204208216U (en) A kind of fire-fighting system of ad hoc safety pump of putting out a fire to save life and property
CN201855517U (en) Electronic initiator for dry powder extinguishment
CN203750069U (en) All-round intelligent power distribution cabinet fire extinguishment device
CN201519419U (en) Moveable suspended type gas fire-extinguishing device
CN203433949U (en) Transformer fire extinguishing apparatus
CN201643502U (en) Intelligent automatic approaching fire extinguishing system
CN206414647U (en) A kind of self-starting extinguishing device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160518

Termination date: 20191227

CF01 Termination of patent right due to non-payment of annual fee