CN111324060B - Container valve control method and system suitable for fire alarm control - Google Patents
Container valve control method and system suitable for fire alarm control Download PDFInfo
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- CN111324060B CN111324060B CN202010044122.6A CN202010044122A CN111324060B CN 111324060 B CN111324060 B CN 111324060B CN 202010044122 A CN202010044122 A CN 202010044122A CN 111324060 B CN111324060 B CN 111324060B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention provides a container valve control method and system suitable for fire alarm control, which comprises the following steps: step M1: acquiring starting information according to the starting control information; step M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information; step M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information; step M4: acquiring level conversion result information according to countdown result information; step M5: acquiring container valve control information according to the level conversion result information; and acquiring the container valve control result information suitable for the fire alarm control system according to the container valve control information. The invention ensures the design requirement of high reliability of gas fire-extinguishing linkage control.
Description
Technical Field
The invention relates to the field of fire alarm control, in particular to a container valve control method and system suitable for fire alarm control, and particularly relates to a container valve monitoring reliability design method.
Background
According to the description in GB4717 "fire alarm controller" and GB16806 "fire-fighting coordinated control system", the main functions of a fire alarm controller, in particular a coordinated type fire alarm controller, in a fire-fighting system include: the fire alarm system comprises a fire alarm function, a linkage control function, a fault alarm function, a linkage equipment supervision function, a self-checking function, an information display inquiry recording function, a software control function and the like. The linkage type fire alarm controller should have the functions of direct manual control and automatic control of each controlled device. Especially for some fire alarm controllers with military and industrial important purposes, automatic linkage control and linear manual control are needed, and higher requirements are put forward for the reliability of control. Control of the fire suppressant delivery in a gas fire suppression system is of greater importance. Because the proportion of the fire extinguishing agent to the total cost of the fire extinguishing system is high, and most of the agent has influence on human bodies and the environment, the gas is prevented from being discharged by mistake to the maximum extent, meanwhile, the gas fire extinguishing system is generally a fire extinguishing means adopted in fire hazard dangerous areas such as industry, chemical industry and the like, the fire extinguishing agent is required to be timely and effectively started to be discharged when a fire disaster occurs, and the occurrence of the disaster in a larger range is prevented. The monitoring of the vessel valves in the gas fire extinguishing system is therefore central to the overall coordinated control function. In addition, effective means for monitoring the opening and closing state of the container valve and the empty and full state of the storage container are lacked, and the monitoring is difficult to obtain at the fire alarm controller.
Patent document No. CN107076361B discloses a container valve that can reliably switch between sealing and discharge of a fluid and can prevent occurrence of a sound of fluid communication when the fluid is discharged. In the container valve 1 in which the residual pressure maintaining valve mechanism portion 100 is mounted in the residual pressure maintaining valve mechanism insertion space 404 in which the flow path 60 is formed, the residual pressure maintaining valve mechanism portion 100 includes: a front protrusion 127 provided at the front end of the valve main body 120, the valve main body 120 being disposed in the residual pressure holding valve mechanism insertion space 404 so as to be movable forward and backward between a valve-closed position and a valve-opened position, and the valve main body 120 being moved backward toward the valve-opened position by the pressure of the gas G in the conduction flow path 60; a coil spring 160, the coil spring 160 biasing the valve body 120 in the forward direction from the valve-open position toward the valve-closed position; the seal holder body 110 and the pressing portion 135 expose an abutment allowing portion 151 allowing the front protrusion 127 to abut against each other, and hold the O-ring 150, and the seal holder body 110 and the pressing portion 135 are fixed to the outlet 40. The patent is applicable to the space still to be perfected in fire alarm control.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a container valve control method and system suitable for fire alarm control.
According to the invention, the container valve control method suitable for fire alarm control comprises the following steps: step M1: acquiring starting information according to the starting control information; step M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information; step M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information; step M4: acquiring level conversion result information according to countdown result information; step M5: acquiring container valve control information according to the level conversion result information; and acquiring the container valve control result information suitable for the fire alarm control system according to the container valve control information.
Preferably, the step M1 further includes: step M1.1, acquiring automatic start-up information according to the automatic start-up control information; step M1.2, acquiring manual starting information according to the manual starting operation information; the start-up information includes: automatic start information and manual start information; the step M3 includes: step M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information; step M3.2, acquiring second countdown result information according to the starting information and the main CPU starting confirmation information; the step M4 includes: step M4.1, acquiring first level conversion result information according to the first countdown result information; step M4.2, acquiring second level conversion result information according to the second countdown result information; the level shift result information includes: first level conversion result information, second level conversion result information; the countdown result information includes: first countdown result information and second countdown result information.
Preferably, the method further comprises the following steps: step M6: and operating an emergency stop button to stop a delay program for supplying power to the container valve and cancel the delay power supply.
Preferably, the method further comprises the following steps: and M7, acquiring the state signal of the container valve during the action of the container valve through the container valve state monitoring circuit according to the container valve control information to acquire the state information of the container valve. This ensures that the system can monitor the true vessel valve status without configuring the vessel valve status return signal. The method can also be adopted to reduce the return device of the state of the container valve in the fire fighting system during design, and simplify the equipment number and the wiring number in the system.
Preferably, the method further comprises the following steps: and M8, acquiring the container state monitoring storage information by using the storage container state monitoring circuit according to the container valve state information. The storage container state monitoring circuit is added with a circuit with a magnetic holding function on the basis of the container valve state monitoring circuit. The circuit can light the status indicator lamp after finishing the discharge of the fire extinguishing agent, and keep the status without the influence of the resetting and the power failure of the controller, and the status indicator lamp is extinguished only by manual resetting operation after the storage container is inflated or replaced. The state that empty bottle and full bottle is known to the on-the-spot manometer of observing of storage container scene not having for the function of controller is more humanized, and it is convenient to use.
According to the present invention, there is provided a container valve control system suitable for use in fire alarm control, comprising: module M1: acquiring starting information according to the starting control information; module M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information; module M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information; module M4: acquiring level conversion result information according to countdown result information; module M5: acquiring container valve control information according to the level conversion result information; and acquiring the container valve control result information suitable for the fire alarm control system according to the container valve control information.
Preferably, the module M1 further includes: the module M1.1 acquires automatic starting information according to the automatic starting control information; the module M1.2 acquires manual starting information according to the manual starting operation information; the start-up information includes: automatic start information and manual start information; the module M3 includes: a module M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information; a module M3.2 for acquiring second countdown result information according to the starting information and the main CPU starting confirmation information; the module M4 includes: a module M4.1, for acquiring a first level conversion result information according to the first countdown result information; a module M4.2 for acquiring second level conversion result information according to the second countdown result information; the level shift result information includes: first level conversion result information, second level conversion result information; the countdown result information includes: first countdown result information and second countdown result information.
Preferably, the method further comprises the following steps: module M6: and operating an emergency stop button to stop a delay program for supplying power to the container valve and cancel the delay power supply.
Preferably, the method further comprises the following steps: a module M7 obtains a container valve state signal when the container valve is operated and container valve state information through the container valve state monitoring circuit based on the container valve control information. This ensures that the system can monitor the true vessel valve status without configuring the vessel valve status return signal. The system can also be adopted to reduce a container valve state returning device in a fire fighting system during design, and the number of equipment and the number of wiring in the system are simplified.
Preferably, the method further comprises the following steps: a block M8 obtains container state monitoring storage information using a storage container state monitoring circuit based on the container valve state information. The storage container state monitoring circuit is added with a circuit with a magnetic holding function on the basis of the container valve state monitoring circuit. The circuit can light the status indicator lamp after finishing the discharge of the fire extinguishing agent, and keep the status without the influence of the resetting and the power failure of the controller, and the status indicator lamp is extinguished only by manual resetting operation after the storage container is inflated or replaced. The state that empty bottle and full bottle is known to the on-the-spot manometer of observing of storage container scene not having for the function of controller is more humanized, and it is convenient to use.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a method designed on the basis of gathering a large number of engineering projects. The main design idea is high reliability, and the design of redundant control, redundant power supply, delayed power supply design and real state monitoring of a container valve and a storage container are adopted, so that the design requirement on high reliability of gas fire extinguishing linkage control is met.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of a fire alarm controller according to the present invention.
Fig. 2 is a schematic diagram of the automatic control power supply principle of the container valve in the invention.
Fig. 3 is a schematic view showing the principle of monitoring the actual state of the container valve and the storage container according to the present invention.
Fig. 4 is a schematic flow chart of the delayed power supply software in the embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 4, there is provided a container valve control method for use in fire alarm control according to the present invention, including: step M1: acquiring starting information according to the starting control information; step M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information; step M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information; step M4: acquiring level conversion result information according to countdown result information; step M5: acquiring container valve control information according to the level conversion result information; and acquiring the container valve control result information suitable for the fire alarm control system according to the container valve control information.
Preferably, the step M1 further includes: step M1.1, acquiring automatic start-up information according to the automatic start-up control information; step M1.2, acquiring manual starting information according to the manual starting operation information; the start-up information includes: automatic start information and manual start information; the step M3 includes: step M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information; step M3.2, acquiring second countdown result information according to the starting information and the main CPU starting confirmation information; the step M4 includes: step M4.1, acquiring first level conversion result information according to the first countdown result information; step M4.2, acquiring second level conversion result information according to the second countdown result information; the level shift result information includes: first level conversion result information, second level conversion result information; the countdown result information includes: first countdown result information and second countdown result information.
Preferably, the method further comprises the following steps: step M6: and operating an emergency stop button to stop a delay program for supplying power to the container valve and cancel the delay power supply.
Preferably, the method further comprises the following steps: and M7, acquiring the state signal of the container valve during the action of the container valve through the container valve state monitoring circuit according to the container valve control information to acquire the state information of the container valve. This ensures that the system can monitor the true vessel valve status without configuring the vessel valve status return signal. The method can also be adopted to reduce the return device of the state of the container valve in the fire fighting system during design, and simplify the equipment number and the wiring number in the system.
Preferably, the method further comprises the following steps: and M8, acquiring the container state monitoring storage information by using the storage container state monitoring circuit according to the container valve state information. The storage container state monitoring circuit is added with a circuit with a magnetic holding function on the basis of the container valve state monitoring circuit. The circuit can light the status indicator lamp after finishing the discharge of the fire extinguishing agent, and keep the status without the influence of the resetting and the power failure of the controller, and the status indicator lamp is extinguished only by manual resetting operation after the storage container is inflated or replaced. The state that empty bottle and full bottle is known to the on-the-spot manometer of observing of storage container scene not having for the function of controller is more humanized, and it is convenient to use.
According to the present invention, there is provided a container valve control system suitable for use in fire alarm control, comprising: module M1: acquiring starting information according to the starting control information; module M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information; module M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information; module M4: acquiring level conversion result information according to countdown result information; module M5: acquiring container valve control information according to the level conversion result information; and acquiring the container valve control result information suitable for the fire alarm control system according to the container valve control information.
Preferably, the module M1 further includes: the module M1.1 acquires automatic starting information according to the automatic starting control information; the module M1.2 acquires manual starting information according to the manual starting operation information; the start-up information includes: automatic start information and manual start information; the module M3 includes: a module M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information; a module M3.2 for acquiring second countdown result information according to the starting information and the main CPU starting confirmation information; the module M4 includes: a module M4.1, for acquiring a first level conversion result information according to the first countdown result information; a module M4.2 for acquiring second level conversion result information according to the second countdown result information; the level shift result information includes: first level conversion result information, second level conversion result information; the countdown result information includes: first countdown result information and second countdown result information.
Preferably, the method further comprises the following steps: module M6: and operating an emergency stop button to stop a delay program for supplying power to the container valve and cancel the delay power supply.
Preferably, the method further comprises the following steps: a module M7 obtains a container valve state signal when the container valve is operated and container valve state information through the container valve state monitoring circuit based on the container valve control information. This ensures that the system can monitor the true vessel valve status without configuring the vessel valve status return signal. The system can also be adopted to reduce a container valve state returning device in a fire fighting system during design, and the number of equipment and the number of wiring in the system are simplified.
Preferably, the method further comprises the following steps: a block M8 obtains container state monitoring storage information using a storage container state monitoring circuit based on the container valve state information. The storage container state monitoring circuit is added with a circuit with a magnetic holding function on the basis of the container valve state monitoring circuit. The circuit can light the status indicator lamp after finishing the discharge of the fire extinguishing agent, and keep the status without the influence of the resetting and the power failure of the controller, and the status indicator lamp is extinguished only by manual resetting operation after the storage container is inflated or replaced. The state that empty bottle and full bottle is known to the on-the-spot manometer of observing of storage container scene not having for the function of controller is more humanized, and it is convenient to use.
Specifically, in one embodiment, a fire alarm controller, as shown in FIG. 1, the hardware for the canister valve control method used in fire alarm control is integrated into the canister valve monitoring module. The container valve monitoring module is primarily used to enable control and monitoring of storage container valves in gas fire suppression systems. Each module is designed with 8 paths of function independent control signals and monitoring signals. The main functions of the control system are embodied on the redundancy design of the control and the power supply design of the control. For the redundancy design of control, the board card has two control means of manual control and automatic control, and a delay starting function and an emergency stopping function are set for automatic control. In the aspect of power supply design of control, two sets of power supply circuits of automatic control and manual control and two-way time delay power supply are adopted, so that misoperation and mistaken discharge are prevented. Meanwhile, the power supply design under the necessary condition of fire alarm is added for automatically controlling the power supply, and the purpose of preventing the gas from being discharged by mistake is also achieved. The design method for monitoring the real states of the container valve and the storage container is added, and the fact that the states of the real container valve and the storage container can be indicated on the controller is guaranteed.
As shown in fig. 2, the container valve control can be achieved by automatic and manual control. In an automatic state, an automatic starting button needs to be started to realize the discharge of the fire extinguishing agent through linkage logic. Aiming design is made on the aspect of automatic control power supply of the container valve in order to ensure that fire extinguishing agent is discharged in a fire extinguishing state and prevent the container valve from being discharged by mistake in a normal monitoring state. Firstly, the two-way delay function of the power supply of the container valve is realized through the D2 and D3 countdown circuits of the figure 3, and in the delay process, the delay program of the power supply of the container valve can be stopped by operating the emergency stop button, so that the delay power supply is cancelled. Meanwhile, a start confirmation signal sent by the main CPU is added to the delayed start, the signal is sent to the countdown circuit only when a real fire alarm occurs, normal delayed power supply is carried out, and otherwise, the delayed power supply cannot be finished even if an automatic start button is pressed. In order to prevent the error discharge and ensure the control reliability and effectiveness of the container valve, redundant delay power supply is adopted, two paths of countdown circuits are respectively connected in parallel for output, and the power supply failure caused by the fault of a single circuit is prevented. When the delay is over, the J3 relay will provide a 24V signal to the automatic coordinated control module that automatically activates the tank valve for tank valve control. For the manual direct control mode, the design method of control drive and line fault diagnosis is adopted to ensure the reliability and effectiveness of manual control.
As shown in fig. 3, the container valve is used as a control component, and in practical application, it is found that the container valve status return signal is not normally set in design for the controller to know the container valve status and the empty bottle status and the full bottle status of the storage container in the control room. The invention designs a real state obtaining method when no container valve state return signal exists. M3 and M1 in fig. 4 are control ports for automatic and manual vessel valve control, respectively, and both are in an or relationship, and either control signal can actuate the vessel valve, and whether the vessel valve is actuated is further influenced by whether the vessel valve actuates the 24V port electrically. The design principle of this supply is described in detail in fig. 2. When the vessel valve is energized and the control signal is asserted, the vessel valve will operate normally and the control lines of resistors R2 and D2 will pass a current that is determined by the magnitude of the power to the vessel valve. The size of the resistor R2 can be calculated according to the power of the container valve, an optical coupler and a current-limiting resistor R3 are connected in parallel at two ends of the resistor R2, the resistance value of the resistor R2 is obtained through calculation, the input end of the optical coupler is guaranteed to have 10 milliamperes of conduction current, when the container valve acts on a current signal, the input end of the optical coupler works, the output end of the optical coupler is in a conduction state, therefore, a coil of a J1 relay is powered on, and a group of supply modules of two groups of contacts of the J1 relay are used for monitoring the. One SET powers the J2 magnetic latching relay, the coil SET of J2 is energized, and D3 is illuminated as a storage container status indication after J2 is actuated. The storage container status represents an indication of whether the container is empty or full of fire suppressant, and therefore, when the control signal is removed, the status needs to remain until the storage container is replaced before resetting the signal. Therefore, a capacitor needs to be added at the storage container state control end, so that the SET coil can be powered off under the capacitor full state, the coil at the RESET end of the J2 can be RESET to the J2 relay when the coil is powered on after the steel cylinder is replaced, and the storage container state indication is extinguished. This design approach solves a solution in the case where no true return signal is available for the container valve and the storage container, either empty or full.
As shown in fig. 4, after receiving the countdown starting signal and the start confirmation signal, starting countdown, judging whether an emergency stop signal exists in the countdown process, if so, canceling to output the level signal of the automatic start container valve, and simultaneously judging whether the signal is the countdown ending signal.
The invention relates to a method designed on the basis of gathering a large number of engineering projects. The main design idea is high reliability, and the design of redundant control, redundant power supply, delayed power supply design and real state monitoring of a container valve and a storage container are adopted, so that the design requirement on high reliability of gas fire extinguishing linkage control is met.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, units provided by the present invention as pure computer readable program code, the system and its various devices, units provided by the present invention can be fully enabled to implement the same functions by logically programming the method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, units and units thereof provided by the invention can be regarded as a hardware component, and the devices, units and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, elements, units for performing various functions may also be regarded as structures within both software and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. A method of controlling a canister valve for use in fire alarm control, comprising:
step M1: acquiring starting information according to the starting control information;
step M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information;
step M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information;
step M4: acquiring level conversion result information according to countdown result information;
step M5: acquiring container valve control information according to the level conversion result information;
acquiring container valve control result information suitable for a fire alarm control system according to the container valve control information;
further comprising:
step M6: operating an emergency stop button, stopping a delay program for supplying power to the container valve, and canceling the delay power supply;
further comprising:
step M7, acquiring a container valve state signal when the container valve acts through a container valve state monitoring circuit according to the container valve control information to acquire the container valve state information;
further comprising:
and M8, acquiring the container state monitoring storage information by using the storage container state monitoring circuit according to the container valve state information.
2. The method for controlling a canister valve used in a fire alarm control of claim 1, wherein the step M1 further comprises:
step M1.1, acquiring automatic start-up information according to the automatic start-up control information;
step M1.2, acquiring manual starting information according to the manual starting operation information;
the start-up information includes: automatic start information and manual start information;
the step M3 includes:
step M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information;
step M3.2, acquiring second countdown result information according to the starting information and the main CPU starting confirmation information;
the step M4 includes:
step M4.1, acquiring first level conversion result information according to the first countdown result information;
step M4.2, acquiring second level conversion result information according to the second countdown result information;
the level shift result information includes: first level conversion result information, second level conversion result information;
the countdown result information includes: first countdown result information and second countdown result information.
3. A container valve control system adapted for use in fire alarm control, comprising:
module M1: acquiring starting information according to the starting control information;
module M2: the main CPU outputs a starting confirmation signal to acquire main CPU starting confirmation information;
module M3: acquiring countdown result information according to the starting information and the main CPU starting confirmation information;
module M4: acquiring level conversion result information according to countdown result information;
module M5: acquiring container valve control information according to the level conversion result information;
acquiring container valve control result information suitable for a fire alarm control system according to the container valve control information;
further comprising:
module M6: operating an emergency stop button, stopping a delay program for supplying power to the container valve, and canceling the delay power supply;
further comprising:
a module M7, which obtains the state signal of the container valve when the container valve acts through the container valve state monitoring circuit according to the control information of the container valve, and obtains the state information of the container valve;
further comprising:
a block M8 obtains container state monitoring storage information using a storage container state monitoring circuit based on the container valve state information.
4. A container valve control system adapted for use in fire alarm control as defined in claim 3 wherein said module M1 further comprises:
the module M1.1 acquires automatic starting information according to the automatic starting control information;
the module M1.2 acquires manual starting information according to the manual starting operation information;
the start-up information includes: automatic start information and manual start information;
the module M3 includes:
a module M3.1, acquiring first countdown result information according to the starting information and the main CPU starting confirmation information;
a module M3.2 for acquiring second countdown result information according to the starting information and the main CPU starting confirmation information;
the module M4 includes:
a module M4.1, for acquiring a first level conversion result information according to the first countdown result information;
a module M4.2 for acquiring second level conversion result information according to the second countdown result information;
the level shift result information includes: first level conversion result information, second level conversion result information;
the countdown result information includes: first countdown result information and second countdown result information.
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| KR101397922B1 (en) * | 2013-01-23 | 2014-05-27 | 주식회사 건국이엔아이 | Fire extinguisher with fire detecition tube |
| CN105611972A (en) * | 2014-09-12 | 2016-05-25 | 日防股份有限公司 | Fire detection tube used for automatic fire extinguishing device and the automatic fire extinguishing device |
| CN204677779U (en) * | 2015-06-01 | 2015-09-30 | 杭州新纪元消防科技有限公司 | The gas extinguishing system vessel valve of interruptible price start and stop |
| CN204856795U (en) * | 2015-08-17 | 2015-12-09 | 中国电子科技集团公司第三十八研究所 | Rack -type detects integrated fire control unit of putting out a fire |
| KR20190085235A (en) * | 2018-01-10 | 2019-07-18 | 이운용 | System for Monitoring and Smart Control of Gas Fire-Extinguishing Facility |
| CN209892811U (en) * | 2019-05-09 | 2020-01-03 | 北京惠利消防设备有限公司 | Container valve for heptafluoropropane fire extinguishing equipment |
| CN110538404A (en) * | 2019-09-10 | 2019-12-06 | 浙江蓝盾电工新材料科技有限公司 | Automatic lithium battery fire extinguishing system |
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