CN207764936U - Utility tunnel fire alarm device and system - Google Patents
Utility tunnel fire alarm device and system Download PDFInfo
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- CN207764936U CN207764936U CN201721809799.4U CN201721809799U CN207764936U CN 207764936 U CN207764936 U CN 207764936U CN 201721809799 U CN201721809799 U CN 201721809799U CN 207764936 U CN207764936 U CN 207764936U
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- 238000012544 monitoring process Methods 0.000 claims description 33
- 238000012806 monitoring device Methods 0.000 claims description 7
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- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The utility model provides a utility tunnel fire alarm device and system for promote the accuracy and the reaction rate of fire alarm in the utility tunnel, the device includes: the first temperature-sensing fire detector is arranged on the surface layer of the power cable in the power cabin of the comprehensive pipe gallery and used for detecting the surface layer temperature of the power cable; the second temperature-sensing fire detector is arranged inside the comprehensive pipe rack power cabin and used for detecting the environmental temperature inside the power cabin; the smoke fire detector is arranged at the top in the power cabin of the comprehensive pipe rack and used for detecting the smoke concentration in the power cabin; the manual alarm button is arranged inside the power cabin of the comprehensive pipe rack and used for providing manual alarm for patrolling personnel when finding fire; the fire alarm controller is arranged inside the power cabin of the comprehensive pipe rack, is connected with the first temperature-sensing fire detector, the second temperature-sensing fire detector, the smoke-sensing fire detector and the manual alarm button respectively, and is used for controlling the alarm to alarm according to the acquired detector information and the manual alarm information.
Description
Technical field
The utility model is related to pipe gallery fire disasters protection fields, more particularly to a kind of pipe gallery fire alarm installation
And system.
Background technology
City integrated piping lane is exactly underground urban duct synthesis corridor, i.e., builds a tunnel space in Urban Underground, will
The various utilities pipelines such as electric power, communication, combustion gas, heat supply, plumbing are integrated in one.Underground pipe gallery device not only solves city
Traffic jam issue also greatly facilitates the maintenance and maintenance of the urban operating mechanisms such as electric power, communication, combustion gas, water supply and sewage.In flourishing state
Family, city integrated piping lane build more than 100 years history, and development is more perfect.The city integrated piping lane in China build history compared with
Short, the only cities such as Beijing, Shanghai, Shenzhen, Shenyang have pipe gallery at present.State Council pays much attention to promote city in recent years
Underground pipe gallery construction, China's piping lane, which is built, also enters Rapid development stage.
Electric power cabin fire is the important safety hidden danger that city integrated piping lane faces in piping lane.Relative to other undergrounds sky
Between, piping lane cross section is smaller, and is divided into several cabins, is unfavorable for the development of fire fighting and rescue.Therefore, the strick precaution of fire is extremely closed
It is important.Current fire alarm installation is mostly to install sensor in electric compartment inner top, and be connected to control centre, for fire
The monitoring of calamity is inaccurate and reacts slow, and false alarm takes place frequently or control centre can just receive after the sprawling of fire wide range
Alarm of fire misses the best opportunity of fire rescue.
Utility model content
The utility model embodiment provides a kind of pipe gallery fire alarm installation, to promote pipe gallery electric compartment
The accuracy and reaction speed of fire alarm, the device include：
First heat fire detector, the second heat fire detector, smoke fire detector, manual pull station, fire
Calamity alarm controller and alarm, wherein：
First heat fire detector is set to power cable surface layer in pipe gallery electric compartment, for detecting power cable
Skin temperature；
Second heat fire detector is set to inside pipe gallery electric compartment, for detecting the environment temperature inside electric compartment
Degree；
Smoke fire detector is set to pipe gallery electric compartment inner top, dense for detecting smog inside electric compartment
Degree；
Manual pull station is set to inside pipe gallery electric compartment, for being reported manually for patrol officer when finding fire behavior
It is alert；
Fire alarm control unit is set to inside pipe gallery electric compartment, respectively with the first heat fire detector, second
Heat fire detector, smoke fire detector and manual pull station connection, for the detector information and hand according to acquisition
Dynamic warning message control alarm is alarmed；
Alarm is set to inside pipe gallery electric compartment, is connect with fire alarm control unit, for according to fire alarm
The control of controller is alarmed.
In one embodiment, alarm is audible-visual annunciator.
In one embodiment, pipe gallery fire alarm installation further includes the fire extinguishing dress being connect with fire alarm control unit
It sets, extinguishing device is set to inside pipe gallery electric compartment；
Fire alarm control unit is further used for being carried out according to detector information and manual alarm information control extinguishing device
Fire extinguishing.
In one embodiment, pipe gallery fire alarm installation further includes the air-blower control being connect with fire alarm control unit
Device, controller of fan are set to inside pipe gallery electric compartment；
Fire alarm control unit is further used for being opened according to detector information and manual alarm information control controller of fan
Open and close sympodium flow fan.
In one embodiment, pipe gallery fire alarm installation further includes the fire resisting damper prison being connect with fire alarm control unit
Device is controlled, fire resisting damper monitor is set to inside pipe gallery electric compartment；
Fire alarm control unit is further used for controlling fire resisting damper monitor according to detector information and manual alarm information
Close fire resisting damper.
In one embodiment, the first heat fire detector is line-type heat detector, the second temperature-sensing fire detecting
Device is point type heat fire detector.
In one embodiment, smoke fire detector is point-type smoke fire detectors.
The utility model embodiment additionally provides a kind of pipe gallery fire alarm system, to promote pipe gallery endogenous fire
The accuracy and reaction speed of calamity alarm, the system include：It is set to the main fire alarm control unit of monitoring center and multiple comprehensive
Close piping lane fire alarm installation, the fire alarm control unit of main fire alarm control unit and multiple pipe gallery fire alarm installations
It is separately connected, wherein：
The fire alarm control unit of pipe gallery fire alarm installation is further used for detector information and manual alarm
Information is uploaded to main fire alarm control unit；
Main fire alarm control unit is used to control each pipe gallery fire report according to detector information and manual alarm information
The operation of alarm device.
In one embodiment, pipe gallery fire alarm system further includes the fire resistant doorsets being connect with main fire alarm control unit
Monitoring device, fire resistant doorsets monitoring device include fire resistant doorsets monitoring host computer and monitor, wherein：
Fire resistant doorsets monitoring host computer is set to the removing shaft inside pipe gallery electric compartment, is used for the open and-shut mode of fire resistant doorsets
It is uploaded to main fire alarm control unit and control monitor is opened, is closed fire resistant doorsets；
Monitor is set to above the fire resistant doorsets inside pipe gallery electric compartment, for monitoring the open and-shut mode of fire resistant doorsets simultaneously
It is uploaded to fire resistant doorsets monitoring host computer and unlatching, is closed fire resistant doorsets；
Main fire alarm control unit is further used for according to detector information and the control fire resistant doorsets monitoring of manual alarm information
Device is opened, is closed fire resistant doorsets.
The pipe gallery fire alarm installation that the utility model embodiment provides, respectively in power cable surface layer and electric compartment
It is internally provided with heat fire detector, while monitoring the environment temperature in electric compartment and the skin temperature of power cable；In electricity
Power cabin inner top is provided with smoke fire detector, monitors the smokescope inside electric compartment；And also it is arranged inside electric compartment
Manual pull station facilitates inspection staff to carry out fire alarm manually.The device can integrate the monitoring of multiple sensors
Signal is alarmed, and alarm accuracy rate is high, and for the monitoring sensitivity of fire height, if having fire behavior, can with and alarm,
The loss of pipe gallery is reduced in maximum magnitude.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.In the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of pipe gallery fire alarm installation in the utility model embodiment；
Fig. 2 is the structural schematic diagram of extinguishing device in the utility model embodiment, controller of fan and fire resisting damper monitor；
Fig. 3 is the structural schematic diagram of pipe gallery fire alarm system in the utility model embodiment；
Fig. 4 is the structural schematic diagram of fire resistant doorsets monitoring device in the utility model embodiment.
Specific implementation mode
It is right below in conjunction with the accompanying drawings to make the purpose, technical scheme and advantage of the utility model embodiment be more clearly understood
The utility model embodiment is described in further details.Here, the exemplary embodiment of the utility model and the description thereof are for solving
The utility model is released, but is not intended to limit the scope of the present invention.
As shown in Figure 1, the utility model embodiment provides a kind of pipe gallery fire alarm installation, to promote synthesis
The accuracy and reaction speed of fire alarm, the device include in piping lane：
First heat fire detector 101, the second heat fire detector 102, smoke fire detector 103 are reported manually
Alert button 104, fire alarm control unit 201 and alarm 105, wherein：
First heat fire detector 101 is set to power cable surface layer in pipe gallery electric compartment 100, for monitoring electricity
The skin temperature of power cable；
Second heat fire detector 102 is set to inside pipe gallery electric compartment 100, for monitoring inside electric compartment
Environment temperature；
Smoke fire detector 103 is set to 100 inner top of pipe gallery electric compartment, for monitoring the cigarette inside electric compartment
Mistiness degree；
Manual pull station 104 is set to inside pipe gallery electric compartment 100, is used for for patrol officer when finding fire behavior
Manual alarm；
Fire alarm control unit 201 is set to inside pipe gallery electric compartment 100, respectively with the first heat fire detector
101, the second heat fire detector 102, smoke fire detector 103 and manual pull station 104 connect, for according to acquisition
Detector information and manual alarm information control alarm 105 alarm；
Alarm 105 is set to inside pipe gallery electric compartment 100, is connect with fire alarm control unit 201, and basis is used for
The control of fire alarm control unit 201 is alarmed.
The operation principle of pipe gallery fire alarm installation is in the utility model embodiment：First heat fire detector
The skin temperature of 101 monitoring power cables, if power cable short-circuit fire, the first heat fire detector 101 is different by temperature
Regular signal is sent to fire alarm control unit 201；Second heat fire detector 102 can be set to 100 inner top of electric compartment,
Monitor the environment temperature inside electric compartment 100, when environment temperature exception inside electric compartment 100, transmission temperature anomaly signal
To fire alarm control unit 201；Smoke fire detector 103 can equally be set to 100 inner top of electric compartment, when generation fire behavior
When, the smokescope inside electric compartment 100 is monitored, when smokescope exception sends a signal to fire alarm control unit 201；Manually
Alarm button 104 can be set to the place for facilitating patrol officer to contact inside electric compartment 100, and fire behavior is being found for patrol officer
When immediately to fire alarm control unit 201 alarm；Fire alarm control unit 201 when above-mentioned one of them or combination detector/
When button sends alarm signal, control alarm 105 is alarmed.It, can be after a kind of detector/button alarm just in implementation
Start alarm, alarm 105 can also be started in two or more detector/button alarm and alarmed.
In one embodiment, as shown in Figure 1, since the removing shaft 200 inside pipe gallery electric compartment 100 is located at electric compartment
100 tops, far from the intensity of a fire, in order to enable fire alarm control unit 201 is not influenced by fire behavior, it can also be by fire alarm control unit
201 are set to the removing shaft 200 inside pipe gallery electric compartment 100.
In one embodiment, in order to ensure the even running of the present apparatus, the power supply of pipe gallery fire alarm installation can be with
It is provided by power specialty power supply (220V, 60HZ)；Meanwhile in order to run without interruption when power is off, pipe gallery fire report
Alarm device can also include stand-by power supply, the temporary power when having a power failure.
In one embodiment, the setting of alarm 105 can be there are many embodiment.For example, alarm 105 can be sound
Light crossing-signal carries out flash of light and siren alarm, carries patrol officer and put out a fire in time after startup.In implementation, audible-visual annunciator is also
It can be set to control centre, when can not have patrol officer in pipe gallery, the staff of control centre is reminded to carry out
Fire extinguishing.
In one embodiment, as shown in Fig. 2, pipe gallery fire alarm installation is finding fire behavior, after being alarmed, may be used also
It is put out a fire with controlling extinguishing device 106.Carrying out fire extinguishing can be there are many embodiment, for example, pipe gallery fire alarm fills
It can also includes the extinguishing device 106 being connect with fire alarm control unit 201 to set, and extinguishing device 106 is set to pipe gallery electricity
Inside power cabin 100；Fire alarm control unit 201 is further used for according to detector information and manual alarm information control fire extinguishing dress
106 are set to put out a fire.In implementation, extinguishing device 106 may include gas extinguishing control panel and superfine powder fire extinguisher, and gas goes out
Fire control packing opens injection indicator light according to the control information of fire alarm control unit 201, while starting superfine powder fire extinguisher,
Spray ultra-fine dry powder.
In one embodiment, as shown in Fig. 2, fire behavior is spread in order to prevent, air in electric compartment 100 can be completely cut off.Isolation
Air can there are many embodiments in electric compartment, for example, the axial flow blower of 100 removing shaft of electric compartment can be closed.In implementation,
Pipe gallery fire alarm installation can also include the controller of fan 107 being connect with fire alarm control unit 201, air-blower control
Device 107 is set to inside pipe gallery electric compartment 100；Fire alarm control unit 201 be further used for according to detector information and
Manual alarm information controls controller of fan 107 and opens, is closed axial flow blower.For another example electric compartment and air draft can also be closed
Fire resisting damper between well further blocks air to flow into electric compartment 100.In implementation, pipe gallery fire alarm installation can be with
Include the fire resisting damper monitor 108 being connect with fire alarm control unit 201, fire resisting damper monitor 108 is set to pipe gallery electricity
Inside power cabin 100；Fire alarm control unit 201 is further used for controlling fire resisting damper according to detector information and manual alarm information
Monitor 108 closes fire resisting damper.
In one embodiment, the selection of the first heat fire detector 101 and the second heat fire detector 102 can have
Multiple embodiments.For example, for the skin temperature of comprehensive monitoring power cable, the first heat fire detector 101 can be
Line-type heat detector；Second heat fire detector 102 can be point type heat fire detector, equal every one section
Distance is laid with a point type heat detector, ensures comprehensive covering to electric compartment 100.
In one embodiment, the selection of smoke fire detector 103 can be there are many embodiment.For example, smoke
Detector 103 can be point-type smoke fire detectors, and point-type smoke fire detectors equally can be every one section of equidistance
It is laid with one, electric compartment 100 is covered comprehensively.
As shown in figure 3, the utility model embodiment additionally provides a kind of pipe gallery fire alarm system, it is comprehensive to be promoted
The accuracy and reaction speed of fire alarm in piping lane are closed, including：Be set to monitoring center main fire alarm control unit 301 and
Multiple pipe gallery fire alarm installations 302, main fire alarm control unit 301 and multiple pipe gallery fire alarm installations 302
Fire alarm control unit 201 be separately connected, wherein：
The fire alarm control unit 201 of pipe gallery fire alarm installation 302 is further used for detector information and hand
Dynamic warning message is uploaded to main fire alarm control unit 301；
Main fire alarm control unit 301 is used to control each pipe gallery fire according to detector information and manual alarm information
The operation of warning device 302.
Why pipe gallery fire alarm system is arranged main fire alarm control unit 301 in the utility model embodiment,
It is that one pipe gallery fire alarm installation is set since the length of electric compartment 100 is usually several kms even tens kms
302 can not comprehensive monitoring electric compartment 100 fire behavior, generally require that multiple pipe gallery fire alarm installations 302 are arranged, it is multiple
Pipe gallery fire alarm installation 302 can uniformly be controlled by a main fire alarm control unit 301.In implementation, such as one
A pipe gallery fire alarm installation 302 finds that fire behavior is alarmed, and main fire alarm control unit 301 can be with after receiving information
The multiple pipe gallery fire alarm installations 302 that link are carried out at the same time alarm so that from fire behavior spot, patrol officer farther out can
To find fire behavior in time, fire behavior spot is rushed for rapidly and is put out a fire.
In one embodiment, the placement of main fire alarm control unit 301 can be there are many embodiment.For example, main fire
Alarm controller 301 can be set to control centre, facilitate staff to find fire behavior in time, and can be by controlling main fire
Alarm controller 301 notifies patrol officer.For another example it is also an option that fire in a pipe gallery fire alarm installation 302
Alarm controller 201 is used as main fire alarm control unit 301, and unified control is carried out to remaining pipe gallery fire alarm installation 302
System.
In one embodiment, since 100 length of electric compartment is several kms or tens kms, an electric compartment 100 can divide
Fire behavior can be controlled in a certain subregion when fire behavior occurs for multiple fire compartments, not make its diffusion.In implementation, Mei Gefang
A fire resistant doorsets can be arranged in fiery subregion, when fire behavior occurs, close fire resistant doorsets, prevent fire spreading.Closing fire resistant doorsets can have
Multiple embodiments, for example, as shown in figure 4, pipe gallery fire alarm system can also include and main fire alarm control unit
The fire resistant doorsets monitoring device 303 of 301 connections, fire resistant doorsets monitoring device 303 include fire resistant doorsets monitoring host computer 304 and monitor 305,
Wherein：Fire resistant doorsets monitoring host computer 304 is set to inside pipe gallery electric compartment, for the open and-shut mode of fire resistant doorsets to be uploaded to master
Fire alarm control unit 301 and control monitor 305 are opened, are closed fire resistant doorsets；Monitor 305 is set to pipe gallery electric compartment
Above internal fire resistant doorsets, open and-shut mode for monitoring fire resistant doorsets is simultaneously uploaded to fire resistant doorsets monitoring host computer 304 and opens, is closed
Fire resistant doorsets；Main fire alarm control unit 301 is further used for according to detector information and manual alarm information control fire prevention gatekeeper
Device 303 is controlled to open, be closed fire resistant doorsets.
In one embodiment, monitor 305 is not limited to be installed above fire resistant doorsets, and can also be installed at any can monitor
To the position of fire resistant doorsets open and-shut mode.
It, can be by fire resistant doorsets monitoring host computer in order to ensure effective operation of fire resistant doorsets monitoring host computer 305 in one embodiment
305 are set to the removing shaft 200 inside electric compartment 100.Two fire prevention gatekeepers can be set simultaneously in implementation, in each removing shaft
Host 305 is controlled, when Dang Yitai encounters failure, spare fire resistant doorsets monitoring host computer 305 can be started, effectively prevent fire spreading.
In conclusion the pipe gallery fire alarm installation that the utility model embodiment provides, respectively in power cable table
Layer and electric compartment are internally provided with heat fire detector, while monitoring the surface layer of the environment temperature in electric compartment and power cable
Temperature；Electric compartment inner top is provided with smoke fire detector, monitors the smokescope inside electric compartment；And also in electric compartment
Inside setting manual pull station, facilitates inspection staff to carry out fire alarm manually.The device can integrate multiple sensings
The monitoring signals of device are alarmed, and alarm accuracy rate is high, and for the monitoring sensitivity of fire height, if having fire behavior, can and
Alarm reduces the loss of pipe gallery in maximum magnitude.
Further, the pipe gallery fire alarm installation and system that the utility model embodiment provides further include fire extinguishing dress
It sets, fire resistant doorsets monitor, fire resisting damper monitor and controller of fan, can be sent out rapid while alarm after finding fire behavior
It takes measures, prevents fire spreading, reduce fire damage.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, is not used to limit this
The protection domain of utility model, within the spirit and principle of the utility model, any modification for being made, changes equivalent replacement
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of pipe gallery fire alarm installation, which is characterized in that including：First heat fire detector (101), the second sense
Warm fire fire detector (102), smoke fire detector (103), manual pull station (104), fire alarm control unit (201) and
Alarm (105), wherein：
First heat fire detector (101) is set to power cable surface layer in pipe gallery electric compartment, for monitoring electric power electricity
The skin temperature of cable；
Second heat fire detector (102) is set to inside pipe gallery electric compartment, for monitoring the environment inside electric compartment
Temperature；
Smoke fire detector (103) is set to pipe gallery electric compartment inner top, dense for monitoring smog inside electric compartment
Degree；
Manual pull station (104) is set to inside pipe gallery electric compartment, for manual when finding fire behavior for patrol officer
Alarm；
Fire alarm control unit (201) is set to inside pipe gallery electric compartment, respectively with the first heat fire detector
(101), the second heat fire detector (102), smoke fire detector (103) and manual pull station (104) connection, are used for
It is alarmed according to the detector information of acquisition and manual alarm information control alarm (105)；
Alarm (105) is set to inside pipe gallery electric compartment, is connect with fire alarm control unit (201), for according to fire
The control of calamity alarm controller (201) is alarmed.
2. pipe gallery fire alarm installation as described in claim 1, which is characterized in that alarm (105) is sound-light alarm
Device.
3. pipe gallery fire alarm installation as described in claim 1, which is characterized in that further include and fire alarm control unit
(201) extinguishing device (106) connected, extinguishing device (106) are set to inside pipe gallery electric compartment；
Fire alarm control unit (201) is further used for controlling extinguishing device 106 according to detector information and manual alarm information
It puts out a fire.
4. pipe gallery fire alarm installation as described in claim 1, which is characterized in that further include and fire alarm control unit
(201) controller of fan (107) connected, controller of fan (107) are set to inside pipe gallery electric compartment；
Fire alarm control unit (201) is further used for controlling controller of fan according to detector information and manual alarm information
(107) it opens, be closed axial flow blower.
5. pipe gallery fire alarm installation as claimed in claim 4, which is characterized in that further include and fire alarm control unit
(201) the fire resisting damper monitor (108) connected, fire resisting damper monitor (108) are set to inside pipe gallery electric compartment；
Fire alarm control unit (201) is further used for controlling fire resisting damper monitor according to detector information and manual alarm information
(108) fire resisting damper is closed.
6. such as pipe gallery fire alarm installation described in any one of claim 1 to 5, which is characterized in that the first temperature sensing fire
Detector (101) is line-type heat detector, and the second heat fire detector (102) is point type heat fire detector.
7. such as pipe gallery fire alarm installation described in any one of claim 1 to 5, which is characterized in that smoke detector
Device (103) is point-type smoke fire detectors (103).
8. a kind of pipe gallery fire alarm system, which is characterized in that including：It is set to the main fire alarming and controlling of monitoring center
Device (301) and multiple pipe gallery fire alarm installations (302) as described in any one of claim 1 to 7, main fire alarm control
The fire alarm control unit (201) of device (301) processed and multiple pipe gallery fire alarm installations (302) is separately connected, wherein：
The fire alarm control unit (201) of pipe gallery fire alarm installation (302) is further used for detector information and hand
Dynamic warning message is uploaded to main fire alarm control unit (301)；
Main fire alarm control unit (301) is used to control each pipe gallery fire report according to detector information and manual alarm information
The operation of alarm device (302).
9. pipe gallery fire alarm system as claimed in claim 8, which is characterized in that further include and main fire alarming and controlling
Device (301) connection fire resistant doorsets monitoring device (303), fire resistant doorsets monitoring device (303) include fire resistant doorsets monitoring host computer (304) and
Monitor (305), wherein：
Fire resistant doorsets monitoring host computer (304) is set to the removing shaft inside pipe gallery electric compartment, is used for the opening and closing shape of fire resistant doorsets
State is uploaded to main fire alarm control unit (301) and control monitor (305) is opened, is closed fire resistant doorsets；
Monitor (305) is set to above the fire resistant doorsets inside pipe gallery electric compartment, the open and-shut mode for monitoring fire resistant doorsets
And it is uploaded to fire resistant doorsets monitoring host computer (304) and opens, is closed fire resistant doorsets；
Main fire alarm control unit (301) is further used for according to detector information and the control fire resistant doorsets monitoring of manual alarm information
Device (303) is opened, is closed fire resistant doorsets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721809799.4U CN207764936U (en) | 2017-12-21 | 2017-12-21 | Utility tunnel fire alarm device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721809799.4U CN207764936U (en) | 2017-12-21 | 2017-12-21 | Utility tunnel fire alarm device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207764936U true CN207764936U (en) | 2018-08-24 |
Family
ID=63187781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721809799.4U Active CN207764936U (en) | 2017-12-21 | 2017-12-21 | Utility tunnel fire alarm device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207764936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767635A (en) * | 2021-01-13 | 2021-05-07 | 国网河北省电力有限公司雄安新区供电公司 | Multi-criterion synergistic fire detection alarm system for power cabin of urban underground comprehensive pipe gallery |
-
2017
- 2017-12-21 CN CN201721809799.4U patent/CN207764936U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767635A (en) * | 2021-01-13 | 2021-05-07 | 国网河北省电力有限公司雄安新区供电公司 | Multi-criterion synergistic fire detection alarm system for power cabin of urban underground comprehensive pipe gallery |
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