CN1190028A

CN1190028A - Automatic water-spraying fire extinguisher

Info

Publication number: CN1190028A
Application number: CN97116595A
Authority: CN
Inventors: 张卫社
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-19
Filing date: 1997-09-19
Publication date: 1998-08-12
Anticipated expiration: 2017-09-19
Also published as: CN1085553C

Abstract

The present invention relates to the technological field of fire control, and the water spraying fire extinguisher features that the fire detector is connected via the detection signal wires to the two input ends of detection and control module and the relay connected to input end is led to power source with its normally open contact being connected to water-controlling valve. The said equipment has following advantages: high fire extinguishing effect, high reliability and simple disign and construction.

Description

Automatic water-spraying fire extinguisher

The invention belongs to the fire prevention field, is the fire-extinguishing apparatus in the water spray fire extinguish system.

Water spray fire extinguish system is a kind of fire extinguishing system that extensively adopts, the core of system constitutes three parts such as fire detecting and alarm equipment, fire-extinguishing apparatus (waterfog head and drench valve), automatic control equipment, by the interlock between automatic control equipment enforcement fire detection equipment and the fire-extinguishing apparatus.There are following two major defects in this system: the 1) big (300M of each fire extinguishing partition protecting area ²More than), a drench valve is set in each subregion, control tens waterfog heads.When any point caught fire in the sub-district, this district's drench valve was opened, and all waterfog heads are sprayed simultaneously in the sub-district, in whole subregion, implement fire extinguishing, fire extinguishing water requirement big (＞60 liters/second), system water supply equipment, consumer, pipe-line equipment, control wetting system volume is big, Heavy Weight, price height, system's starting is slowly put out a fire the response time long (about＞30 seconds); 2) when the fire zone drench valve breaks down, all shower nozzles of fire zone can not be sprayed, and increase the possibility of fire attack failure; 3) capital equipment in the system, be detection alarm equipment, fire-extinguishing apparatus, automatic control equipment are independent mutually, interknit again, each equipment relates to different technology specialties, different product supply of material manufacturers needs a large amount of nonstandard interface of design, so system's design and installation complexity, the debugging maintenance difficulty has also reduced the reliability of system works.

The objective of the invention is shortcoming at above-mentioned existence, a kind of extinguishing device that integrates functions such as detection, automatically control, spraying fire extinguishing is provided, and is that core just can constitute and forms simply, good reliability, fire-fighting efficiency height, is easy to the water spray extinguishing device of design and installation and debugging maintenance with this device.

This automatic open-close type extinguishing device is the electromechanical integrated product that integrates reliable fire detecting and alarm, Monitoring and Controlling, mist fire-fighting technology, it is made up of water control valve, waterfog head, five parts such as detection control electrical module, housing and fire detector, first three part optimum organization is installed concentratedly on housing, and fire detector is connected with detection control electrical module by the electric interfaces on the housing.It is characterized in that fire detector is two input terminal a, the b that detectable signal line interface on housing connect to detect the control electrical module, the relay J of joining with input is to power supply, and the normally opened contact SWJ of relay J connects water control valve K.Hold and be connected to press button SA at electrical module input a, b, water control valve K and relay J normally opened contact SWJ join to holding and are connected with HV Terminal Q through diode D.

Compare with conventional water spray fire extinguish system, this device has following advantage:

1) fire-fighting efficiency height, the water for fire extinguishing amount is few, reduces the water damage that water spray extinguishing brings greatly, and obviously reduces construction costs (descending about 30%).The fire extinguishing response time short (＜10 seconds).

2) the core component automatic water-spraying fire extinguisher of native system is " electromechanical integration " product that integrates detection, control, puts out a fire, and is adapted at factory and produces in batches, ensure the quality of products easily, thereby the reliability height of this type water spray fire extinguish system.

3) even individual orientation is followed the tracks of the automatic circulation extinguishing device cisco unity malfunction that breaks down in use, adjacent with it extinguishing device operate as normal can guarantee that also fire can only be confined to tiny area, can outwards not spread, greatly improve the reliability of system's fire extinguishing.

4) design and construction of simplification system, and working service.The device therefor great majority are the fire protection criteria product in the system, have reduced nonstandard design work amount, also provide convenience for the maintenance and repair parts supply of material.Because the volume of automatic water-spraying fire extinguisher is very little, change more conveniently, install and take up an area of less, do not influence the integral layout of protected area.

Description of drawings:

Fig. 1 is detection control electrical module circuit theory diagrams of the present invention.

Fig. 2 is an automatic open-close type water spray extinguishing part-structure schematic diagram of the present invention.

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is the present invention and fire extinguishing system connection diagram.

1) water control valve: adopt DN15 suspended piston formula drench valve or other magnetic valves, its key technical indexes is as follows:

Minimum closing presure: the 0.08MPa of operating pressure: 0.1～1.2MPa

Maximum withstand voltage: 2.5MPa maximum working pressure (MWP): 1.6MPa

Flow resistance loss (5 meter per second): 0.04MPa actuating coil voltage: DC24 volt

Actuating coil electric current: 0.5 peace

2) waterfog head: select anti-theft type waterfog head or other waterfog heads for use, the key technical indexes is as follows:

Atomizing pressure: the 0.35MPa cone angle that atomizes: 60,90,120,150 degree

Mist flow: 30,40,50,60,80,100,120 liters/minute

3) detect the detection electrical module: its electrical principle is seen Fig. 1 respectively.

4) housing: housing is used for several parts of extinguishing device are combined and installed together, and can adopt as shown in Figure 2 structure or other structure, and housing adopts metal material to make or its external interface of other materials has:

Interface tube: be connected with the fire water-supply pipe network, water under high pressure enters extinguishing device by this interface during fire extinguishing;

Fire detection signal line interface: link to each other with fire detector, fire detector can be the fire detector of arbitrary forms such as sense cigarette, temperature-sensitive, line type temperature-sensitive, point type, when adopting line-type heat detector, fire information is sent to the corresponding terminal that detects the control electrical module by a, the b end of this interface;

Manual control line interface: this interface has V+, GND, and three terminals of Q, wherein, V+, GND are used for providing power supply to extinguishing device, and Q is used for opening and closing extinguishing device.

5) fire detector: can select the fire detector of line-type heat detector or other form for use, detector was carried high level or low level or big electric current or little electric current or short circuit information to detecting the control electrical module when fire took place.Fire detector is connected with fire detection signal line interface on the housing.

When fire takes place, when selecting line type fire detector for use, detector is sent to fire information and detects the control electrical module by a, b terminal, be that a, b terminal are short-circuited, make control relay J work, its normally opened contact closure, water control valve solenoid energising work, extinguishing device is opened, and High-Pressure Water is ejection enforcement fire extinguishing at a high speed after the waterfog head atomizing.

Carry high voltage can manually boot extinguishing device to the Q terminal.

Press the button SA that detects on the control electrical module and also can start extinguishing device.

The control relay J that detects in the control electrical module can replace with the electronic shape of triode switch or other form.By suitable circuit design, also can make detection control electrical module possess following miscellaneous function:

1) built-in stand-by power supply: form by charging circuit and rechargeable battery, under the normal condition by V+ to battery charge, rechargeable battery is powered from the trend extinguishing device during V+ fault.

2) extinguishing device status monitoring: can the fire information of extinguishing device, main electric fault information, power backup fault message, line fault information and spraying normal information etc. be sent to bus system general fire alarm control unit by the fire alarm circuit of standard, realize monitoring to extinguishing device self.

3) extinguishing device action interlocking: after the extinguishing device action, start other extinguishing device that is adjacent by interlock circuit and transmission line.

4) fire extinguishing is delayed time: the back extinguishing device takes place and starts fire extinguishing in fire, after the fire suppression, closes after the employing delay circuit makes extinguishing device delay work a period of time again.

5) work is energy-conservation: the start-up circuit by the water control valve solenoid is in the energy conservation state after extinguishing device is started all the time.

By fire-fighting plumbing facility, fire protection control center, three parts such as automatic water-spraying fire extinguisher can be formed directed tracing automatically recycled water spraying fire extinguishing system, and as shown in Figure 4, wherein preceding two parts and general water spray fire extinguish system are similar.In this water spray fire extinguish system, the protected area is decomposed into several small fire extinguishing sub-districts, every sub-district protection area 5M ²About, each fire extinguishing sub-district is provided with the directed tracing extinguishing device that circulates automatically.Two characteristics are arranged during system works: 1) directed tracing fire extinguishing, any point catches fire in the protected district, just can start the extinguishing device of this point, and starts adjacent with it extinguishing device action; Fire zone enlarges, then the quantity of extinguishing device unlatching increases, the design water requirement of system is 28 liters/second, be significantly less than the discharge (＞60 liters/second) of conventional water spray fire extinguish system, under the fire condition, the water consumption of system has reduced the water damage of water spray fire extinguish system all the time less than the design water consumption.2) circulation fire extinguishing automatically, extinguishing device is constantly surveyed the condition of a fire information of protection zone in action, if fire continues, then extinguishing device works on; If fire is eliminated, then extinguishing device stops fire extinguishing after detecting the delay circuit delay work a period of time on the control electrical module; If it is revivable to stop the fire extinguishing back, then extinguishing device starts the enforcement fire extinguishing once more.

In the accompanying drawing 2～4 1 is nozzle, and 2 is water inlet, and 3 is the detectable signal line interface, and 4 connect for manual control line Mouthful, 5 is the plumbing facility, and 6 is fire protection control center, and 7 is the protection zone, and 8 is this extinguishing device.

Claims

1. automatic water-spraying fire extinguisher, it is formed by combining by water control valve, waterfog head, detection control electrical module, housing and fire detector, it is characterized in that fire detector is two input terminal a, the b of the detectable signal line interface company detection control electrical module on housing, the relay J of joining with input is to power supply, and the normally opened contact SWJ of relay J connects water control valve K.

2. according to the described automatic water-spraying fire extinguisher of claim 1, it is characterized in that holding and be connected to press button SA at electrical module input a, b, water control valve K and relay J normally opened contact SWJ join to holding and are connected with HV Terminal Q through diode D.