CN1139015A - Gaseous fire extinguishing system - Google Patents

Abstract

One system used for detecting, controlling and extinguishing fire in limited space and being innocuous to human body. The system utilizes unique inert-gas mixture in reducing oxygen density to the degree below supporting combustion. It adopts unique equipment storing and starting distributing and transporting inert-gas mixture, and it applies special computer software in the calculation of flow and distribution of inert -gas mixture.

Description

Gas extinguishing system

The present invention relates to a kind of gas extinguishing system, specifically relating to a kind of noble gas mixtures that adopts is the gas extinguishing agent system of extinguishing chemical.

Breathe out dragon 1301 for many years and be used as gas extinguishing agent, use in the environment that has the people to exist.The carbon dioxide fire extinguishing system is used for the unmanned generally speaking environment that exists.Because the signature of Montreal Agreement since 1989, is breathed out dragon 1301 and is worldwide eliminated gradually.People need seek that a kind of new environment can be accepted and to the gas extinguishing agent of human body safety.

United States Patent (USP) 4,807,706 have announced a kind of can the fire extinguishing effectively and noble gas mixtures that people can breathe.But this patent does not have to discuss following project: store the method for inert gas, design is flowed and is distributed transport net, the method for start-up system, the method for pressure monitoring, and the method that inert gas agent is distributed to protected space.

Purpose of the present invention promptly be to provide a kind of be used to survey, control and put out in restriceted envelope fire and to environment, harmless fire extinguishing system.And a kind of extinguishing chemical is provided, and it is the curstomer-oriented design, its lack of balance, total flooding, nontoxic, non-conductive and clean.

For finishing above-mentioned purpose, through a large amount of extensive studies developments, study into following the present invention, it comprises:

A kind of noble gas mixtures of uniqueness.

Bottle valve as a uniqueness of the part of this system.The pressure that produces in the discharging concetrated pipe after one main gas cylinder of native system is activated can start this bottle valve.This valve utilizes storage pressure and/or concetrated pipe back pressure with the method for uniqueness and power is applied on the main piston in the valve, thereby helps Open valve.

This system comprises unique selector valve (directional control valve), and these valves can utilize one group of gas cylinder to go to protect in several conflagration areas any one.

This system comprises that the hose connector of a unique design is connected to each gas cylinder on the concetrated pipe, if this flexible pipe correctly is not connected on the concetrated pipe, the check valve in this flexible pipe will prevent that the gas in the gas cylinder from unexpectedly being discharged.

This system also comprises the pipe union of being with restricting orifice and is with the screw nipple of throttle orifice to control discharge pressure.This pipe union has the size that unique exterior metal sheets is indicated its throttle orifice.

This system has unique mobile calculation procedure, calculates nozzle exit pressure, each nozzle extinguishing chemical discharge capacity and drain time of expectation.

This software can be enough to the fire extinguishing system that budget goes out to have the distribution duct of wide variety of sizes and length, can use three-way pipe to connect 95% inert gas nearly delivered to a branch and 5% inert gas is delivered in the opposite branch go.

This fire prevention system is made up of that design for the client, that carry with pipeline, extinguishing chemical fire prevention system lack of balance, total flooding, nontoxic, nonconducting, clean, need to be used to the conflagration area of these advantages, and people's zone is particularly arranged usually.These conflagration areas generally comprise computer floor, subfloor, tape storage, telecommunications/switching equipment, dome, treatment facility or the people are arranged usually or unmanned electronic equipment district, are not that very fragile rapid wear can't be replaced exactly at this this regional equipment.When correct design, this fire prevention system just can drop to oxygen content category-A fire, category-B combustible liquid fire and the C class electrical fire that puts out surface combustion under the degree that can support to burn under 37.5% the agent concentration.Also tested the inerting ability of this fire prevention system in addition.These test shows, under the design concentration between 40% to 50%, native system will successfully make propane/air and methane/AIR MIXTURES inerting, thereby eliminates potential fire hazard in these environment.

This system includes extinguishing chemical and facility part, and the software section of supporting these parts.These facilities can be divided into mechanical part and electric component.Mechanical part comprises startup, extinguishing chemical storage and release, pressure control, distribution, discharging and servicing unit.Electric part comprises detection, control, startup and servicing unit.Each parts all includes the assembly that can use and install with various compound modes, and compound mode depends on the needs and the configuration of system.Therefore native system is widely applicable, and the fire effect of surveying, controlling and put out in restriceted envelope is fine.

In addition, the argon gas that likens to its component of the noble gas mixtures of uniqueness of the present invention has more effective fire extinguishing effect.

The noble gas mixtures of uniqueness of the present invention likens that to keep time of low oxygen concentration in the room longer for the nitrogen of its component to.

The noble gas mixtures of uniqueness of the present invention is when sucking human body, and is all more safer than any gas of forming this mixture.

The noble gas mixtures of uniqueness of the present invention does not produce poisonous or corrosive product that any alkyl halide extinguishing chemical decomposites.

The noble gas mixtures of uniqueness of the present invention is reduced to the formation of the poisonous combustion product such as carbon monoxide minimum.This mixture outside the advantages such as ability of lasting retention time and support life, also has other advantage except having above-mentioned lower agent concentration.After the discharging and fire extinguishing of extinguishing chemical, this mixture can not decompose, and can not produce any elephant and breathe out the sort of catabolite that dragon 1301 discharging backs occur.It can at a good pace stamp out a fire, thereby is enough to reduce the generation of carbon monoxide.

In order to explain advantage of the present invention and characteristics better, describe the present invention below in conjunction with accompanying drawing.Wherein:

Fig. 1 is a kind of automation fire equipment system scheme of installation of statement fire prevention system of the present invention design.

Fig. 2 is that the manual joystick in the automation fire equipment of Fig. 1 discharges starter.

Fig. 3 is the manual terminal box in the automation fire equipment of Fig. 1.

Fig. 4 is used for the hawser that has the die forging joint that top terminal box connects with the control stick starter.

Fig. 5 is used for the corner portion pulley that above-mentioned hawser changes direction.

Fig. 6 is used for two/three-way control box that many places manually boot bottle valve.

Fig. 7 is an air starter

Fig. 8 is the gas cylinder transport section

Fig. 9 a and Fig. 9 b are bottle valve, and wherein Fig. 9 b represents the part of valve especially.

Figure 10 is for discharging soft bend pipe

Figure 11 is the orifice plate pipe union

Figure 12 is the throttle orifice screw nipple

Figure 13 is for discharging the nozzle stereogram

Figure 14 is a nozzle water conservancy diversion guard shield

Figure 15 is the check valve cutaway view

Figure 16 is a selector valve

Figure 17 is the pressure closing organ

Figure 18 is a pressure switch

Figure 19 is the top portion ventilation stopple

Figure 20 is a control system

Figure 21 is a flip flop equipment

Figure 22 is the magnetic valve starter

Figure 23 is a notification device

Figure 24 is a selector switch

Fig. 1 has shown a kind of simple automation fire prevention system equipment.Detector 1 is measured fire by combustion product or heat, and transmits signal to 24VDC control panel 2.Simultaneously, control panel starts an alarm 3 and the release circuit that includes magnetic valve starter 4.After starter is opened, open the bottle valve 5 of this guide's gas cylinder with regard to the pressure that makes guide's gas cylinder.Extinguishing chemical just discharges from this gas cylinder then, and flows through the check valve of valve throat, anti-recoil check valve, the soft bend pipe of discharging and discharge soft bend pipe 6.Discharging soft bend pipe is connected on the concetrated pipe 7.Extinguishing chemical flows into concetrated pipe raises pressure, and this makes extinguishing chemical accompany or follow the soft bend pipe of gas cylinder discharging separately by each again and flow back into the bottle valve 8 of accompanying or follow gas cylinder, and pressure is raise.Then, this back pressure starts the bottle valve of each retinue's gas cylinder and opens bottle valves all in the system.Concetrated pipe allows extinguishing chemical to flow and pressure is applied on the Pneumatic pressure switch 9, and this switch handles and cut out ventilating system.Concetrated pipe also makes this pressure of pipeline supercharging be sent on the pressure shutoff device 10, thereby the automatically-controlled door of this protection zone is closed.Concetrated pipe is also connected on the pressure reducing orifice pipe union 11, and this pipe union includes one and controlling the flow of downstream extinguishing chemical and the orifice plate of pressure.Distribution circuit 12 is guided extinguishing chemical into discharge nozzle 13, and these discharge nozzles 13 are being controlled pressure and the quantity that is discharged into indoor extinguishing chemical with the orifice plate pipe union.The structure of nozzle can make the extinguishing chemical diffusion and be evenly distributed to whole conflagration area.

Extinguishing chemical

Admixture of gas is a kind of non-corrosiveness gas of a large amount of existence, and it neither supports burning also can not react with most of materials.It only comprises naturally occurring gas, and these gases generally have no effect to ozone or environment.Extinguishing chemical is the mixture of the gas of three kinds of dilution oxygens, comprises nitrogen, argon gas and carbon dioxide.When introducing extinguishing chemical in the guard space, it drops to oxygen content below the degree that can support burning.For the ordinary combustible in most of typical conflagration areas, when the content of oxygen was reduced to 15%, burning will stop.Typical system of the present invention will drop to 12.5% to oxygen content, for fire extinguishing provides safety factor.32 of 0.085 pound of/cubic feet (1.36 kilograms/cubic metre) steam pressure 1925Psi of characteristic proportion (0 ℃ of 132.7 crust)

70 of 2175Psi (21 ℃ of 150 crust)

130 (54 ℃ of 177.5 crust) vapour density 1.1 (air=1) approximate molecular weights 34 of 2575Psi are formed

Three kinds of more common naturally occurring composition gases mix in gas cylinder in following ratio:

Nitrogen 52%

Argon gas 40%

Carbon dioxide 8%

The mixture of Chan Shenging has kept the characteristic of those three kinds of separate gas like this, for example nontoxic, non-corrosiveness, not flammable, Fails To Respond, colourless and tasteless.With respect to other extinguishing chemical, this mixture also has unique character, and promptly it can not consume ozone, can not impel global warming, nor can be created in the chemical substance that has longer life in the atmosphere.In addition, this mixture can not produce the toxicity problem that other extinguishing chemical exists.This mixture also demonstrates some other characteristics that are better than being used alone its composition gas.With relatively cup burner test of argon gas

From the angle of fire extinguishing, one of method of determining extinguishing concentration is exactly to utilize cup burner.In this equipment, can light a kind of fuel, N-heptane normally, and airborne agent concentration can change and can flow through around this fuel bowl of having lighted.Put out the required agent concentration value of fuel of burning and be called the cup burner value, and be the minimum agent concentration in laboratory in theory.Use the N-heptane to act as a fuel and with argon gas as this test that extinguishing chemical carries out, the minimum agent concentration that draws is 40-40.2%.The minimum agent concentration that the same test of using mixture of the present invention to carry out draws is 29.5-31%, is better than using separately argon gas at least 22%.

Compare the retention time with nitrogen

Another key property of the extinguishing chemical of total flood is that they have the ability the ability of agent concentration in the guard space is kept the long time of one section regulation.Retention time is the tolerance that agent concentration is held time length in a specific guard space or in the fire; it depends on some parameters; comprise: the regulation of the type of the reaction time of fire department, related fuel type, conflagration area, local employee's available situation or local administration of the prevention and control department, but be not limited only to these parameters.If this chamber is sealed well especially, breathes out imperial 1301 systems and generally can keep agent concentration 10 minutes.

Usually the retention time of any specific extinguishing chemical is proportional to the ratio of density of fire suppressant and atmospheric density.Heavier gas is because the effect of the pressure head that they autologous densities produced tends to the lower openings discharge by conflagration area.Lighter gas will float, and tends to discharge from the opening on conflagration area top.The majority of gas extinguishing chemical all is heavier than air manyly, and agent concentration will descend rapidly, unless pay special attention to provide a very airtight room or building.This needs considerable time and substantial contribution in most of general building structure.

As a kind of extinguishing chemical, nitrogen combines with carbon dioxide can provide the mixture identical fire-fighting characteristic claimed with present patent application.But the sort of mixture is big and make the retention time might be less than desirable value to the density difference of air.The composition of mixture of the present invention has been adjusted and has made density very near the atmospheric density under standard temperature and pressure (STP).In order to reach this effect, determined to form the combination and the ratio of gas specially.Test proves, the mixture of Chan Shenging can keep this concentration in the long time after mixing with design concentration and air like this, even must scrutiny and be sealed in window required in the general building structure, door, ventilation or water back, cable passage or other opening.The test of system's discharging extinguishing chemical shows that even any seal approach is not paid special attention to take in the room, system also can also be kept above the required agent concentration of fire extinguishing after 20 minutes.

With relatively security of carbon dioxide

This mixture method for extinguishing fire is exactly that oxygen content is dropped under the degree that can support burning.System will make that oxygen concentration reaches 12-14% in the protection zone.Be in for a long time and can cause in people's brain oxygen content to reduce in the anaerobic environment, can be pernicious to people after lasting.Carbon dioxide 2% to 5% is added in the atmosphere of conflagration area can provide spread effect to respiratory system, increases respiration rate and strengthens the ability of absorption of human body oxygen.The test of carrying out on the person shows that IC oxygen content can increase when the people is in this mixture, and is higher than the brain oxygen content that is had when the people is in the atmosphere that generally contains oxygen 21%.Advantage-

This mixture is except having above-mentioned lower agent concentration, lasting retention time and supporting also to have other advantage the advantages such as ability of life.After the discharging and fire extinguishing of extinguishing chemical, this mixture can not decompose, and can not produce any elephant and breathe out the sort of catabolite that dragon 1301 discharging backs occur.It can also at a good pace stamp out a fire, thereby is enough to reduce the generation of carbon monoxide.Hardware-

Equipment that this fire prevention system is all and parts have all carried out test widely.These tests comprise: category-A and category-B fire test, the sealing property test of seal member, 500 loop tests of functional unit, the salt fog jet test of corrosion resistance, the accuracy test of the indicator such as instrument, the high pressure/high temperature emission test, 30 days high temperature and low temperature exposure test in 30 days, 6600 pounds/square inch fluid pressure test, 1 year leak-testing of gas cylinder device, the coverage of nozzle and the test of high flame, the equivalent length of valve and joint, the low temperature flexibility of flexible pipe, manual actuator and the manually maneuvering test of backguy starting drive, the air-operated control test, safety valve test on the bottle valve, packing ring and sealing ring test, nameplate exposes test, gas cylinder supporting test, the test of detector sensitivity, the control panel compatibility test, and system's emission test.All facilities that use in native system can both be deposited in 32～130 temperature range and use.Protected disaster-stricken environment can be different from above those temperature, but must be noted the minimum and maximum concentration that can realize, mainly is that people's conflagration area is being arranged.Mechanical part-startup:

Comprise the machinery/pneumatic startup of solenoid control, have four kinds of different mechanical means to start the bottle valve of guide's gas cylinder.These methods comprise that manual joystick starter, backguy startup, pneumatic startup and pilot port start.Manual joystick-

The manual joystick starter has been shown among Fig. 2.It is the extinguishing chemical gas cylinder by promoting directly with hand that its hand starts that manual joystick discharges starter.Finish and manually boot by promoting the starter handle.Stick design contains the mechanical pin of a forging, is used for when starting control stick being fixed on the position of opening.The backguy startup-

As shown in Figure 3, by manual terminal box at a distance is connected on the local control stick starter, finishes backguy and start.Terminal box provides the method that discharges starter from a remote manual control point machinery.As shown in Figure 4, terminal box with adopted a hawser connecting of control stick starter.This diameter is the end connector that 1/16 inch cable assembly includes a brass die forging, among the terminal box a long way off.This hawser is installed in the conduit.When needs change direction, as shown in Figure 5, adopt the pulley bend pipe.Quarter block is installed among the hawser shell (pipe or conduit), and the loss minimum of power when hawser is turned at 90 degree can not produce and tangles.In order to use stay cord to start, need other parts.As shown in Figure 6, two or three control boxes can manually boot bottle valve from two or three far-end backguy points.Pneumatic startup-

When the pneumatic startup guide of a requirement of system design gas cylinder, just use the air starter that in Fig. 7, shows.Air starter can be directly installed on the release connector place of pilot valve.By the power of minimum 250 pound per square inches is applied to the porch, finish start-up operation.For the orientation of pipeline, and just can dismantle, just use a swivel joint in order not destroy pneumatic connection.Air starter is made by brass.

The another kind of method of pneumatic startup puts on back pressure check valve oral area, the part of the valve shown in Fig. 9 b to pressure exactly.When magnetic valve starter shown in Figure 22 during by electronic startup, this is the port that bears pressure.Also can provide the pressure of 300 pound per square inches to use this port separately by other source from afar.Discharge: gas cylinder-

Extinguishing chemical is stored in the high pressure steel gas cylinder that bottle valve is housed of four kinds of sizes, as shown in Figure 8.The nominal volume of these four kinds of size gas cylinders is 200,250,350 and 435 cubic feet.In order to protect bigger conflagration area, a plurality of gas cylinders can be installed on the identity set pipe.All gas cylinders all are coated with redness, and the nameplate of its capacity of detailed description in detail and other important information is housed.Bottle valve-

Shown in Fig. 9 a and 9b, bottle valve is made by brass, it comprise 1 inch NPT air inlet screw thread, anti-anti-in gas outlet limiter, independently inflation inlet, safety valve, Pressure gauge, monoblock type instrument protector, pneumatic pilot port and a startup plunger that is contained in the top.This valve can start (referring to the argumentation that starts a joint) with four kinds of different startup methods when as pilot valve.When as servo valve, can start it by the back pressure of the concetrated pipe that enters this valve outlet port.A system that has a plurality of gas cylinders and a bottle valve only need handle a valve (pilot valve) and just can start, and the pressure of generation will start valve every other on the concetrated pipe (servo valve) during this valve release.Discharge soft bend pipe-

As shown in figure 10, discharging soft bend pipe is a flexible pipe that is surrounded by the covering of two-wire braiding expanded rubber, and brazed joint is equipped with at two ends.A check valve is equipped with in inlet end the inside of this flexible pipe, is used for preventing gas motion under the situation of discharging or release when a gas cylinder separating with pipeline.The work that combines of this valve and anti-recoil valve.When these two valves were bonded together, any can guarantee all that another is in and open and without hindrance state.This flexible pipe and valve must use together.Pressure control:

Because admixture of gas has very high storage pressure, therefore just may need certain requirement be arranged with high-quality pipeline and to the label of pipe.In order to reduce the use of expensive pipeline, native system has been taked measures to reduce stresses.Use can limit the mobile throttle orifice of extinguishing chemical the pressure of downstream pipeline is dropped to lower level, just can reach the purpose of decompression.Can adopt two kinds of different parts to reduce pressure.The orifice plate pipe union-

As shown in figure 11, the orifice plate pipe union is one 3000 pound per square inch forged steel NSCWP pipe union, includes a corrosion resistant plate.Being drilled with on this piece plate flows calculates the throttle orifice of required specific dimensions, but also is connected with exterior metal sheets, and the size of the last throttle orifice that is stamped on this sheet metal is so that identification.This connector has 6 kinds of sizes, from 0.5 inch pipe to 2 inch pipe.The throttle orifice screw nipple-

As shown in figure 12, the throttle orifice screw nipple is an integral type brass tube screw thread coupling, is drilled with the hole that is similar to the orifice plate pipe union above.This screw nipple be of a size of 2.5 inches and more than.Identification for convenience, the size of throttle orifice is stamped on the hex nut of screw thread coupling.Distribute:

The distribution circuit of system can be divided into concetrated pipe part and downstream pipeline portions, distinguishes according to the pressure difference before and after orifice plate pipe union or the screw nipple.This pipeline need bear the pressure that is run between system's draining period.Concetrated pipe-

The concetrated pipe part is made up of pipeline and pipe joint, and they must hold and can stand the pressure that is up to 3000 pound per square inches, and this pressure is the maximum pressure of extinguishing chemical in the time of 130.Usually require joint as rated pressure, according to the size that the mobile calculation procedure of computer calculates, pipeline adopts No. 80 or No. 160 pipes.The downstream pipeline-

The downstream distribution circuit of system is made up of No. 40 or No. 80 pipes usually, and this number number is decided by the size of pipe.Joint in the pipeline then requires their operating pressure to be equal to or greater than the maximum downstream pressure that the computer flow program calculates.Discharging:

Extinguishing chemical discharging hardware comprises nozzle and water conservancy diversion guard shield.The two size range all is from 0.5 inch to 1.5 inches.According to claimed fire, can only use nozzle also can combine use to it and water conservancy diversion guard shield separately.Nozzle-

As shown in figure 13, discharge nozzle is made by brass, and it is designed to 360 degree discharging extinguishing chemicals to conflagration area.Nozzle includes an orifice plate at the air inlet place, be drilled with the special throttle orifice that calculates according to the mobile calculation procedure of computer on it.Designs of nozzles becomes when installing according to desired parameters such as minimum pressure, maximum height and maximum coverage area, has the distribution of the extinguishing chemical that holds water and the mixing of composition gas.The water conservancy diversion guard shield-

As shown in figure 14, when nozzle was installed in the conflagration area of suspended ceiling plate and fragile light fixture, the water conservancy diversion guard shield was used to control the discharging distribution form of nozzle.The water conservancy diversion guard shield is designed to reduce the mass rate of emission at the place, top of conflagration area, the maximum nozzle height and the topped area of nozzle in the time of can also keeping not having air deflector simultaneously.Accessory-

Native system has used some accessories.These accessories use on demand according to the requirement of type, external function and each system of system.Accessory comprises check valve, selector valve, pressure closing organ, pressure switch and top cover vent-peg.Check valve-

As shown in figure 15, check valve is used for active/standby with system and be used for the selector valve system.Active/standby with system in used check valve be used to prevent that back-up system concetrated pipe pressure from increasing, and prevent that bottle valve is activated in the back-up system.If check valve is activated, it will allow gas to flow into distribution circuit from back-up system.When the gas cylinder of the different numbers of use is protected different conflagration areas in selecting valve system, also can in the selector valve system, use check valve to separate and separate guide's gas cylinder and driven gas cylinder.Check valve is made with bronze casting, has 0.5 inch to 2.0 inches NPT nipple.Selector valve-

As shown in figure 16, selector valve is used for extinguishing chemical is imported a conflagration area of a plurality of fire systems.This valve is equipped with an electromagnetic starter.The electricity that uses the magnetic valve that is connected with control system to finish selector valve starts.Selector valve can manually start, and it had been both available to be connected in the manual terminal box that handle on the pressure-activated device at valve top starts also available control crank from afar and to start.The pressure closing organ-

As shown in figure 17, the pressure closing organ is linked on the primer liner or distribution circuit of system.Or by pneumatic or by manually booting, the pressure closing organ can trip spring or weight-driven mechanism, to close door, window, opens the petrolift valve, closes the fire prevention damper or closes the fuel supply valve.Pressure switch-

Extinguishing chemical pressure when as shown in figure 18, pressure switch is discharged by system is handled.Pressure switch can be used to open or close circuit, thereby cuts off electric power of equipment or turn on the light or alarm.The top portion ventilation stopple-

As shown in figure 19, the top portion ventilation stopple is used to be released in one and has used check valve, may accumulate the low pressure of formation in the closed system of selector valve or time delay device.The top portion ventilation stopple should be installed in a side that connects with gas cylinder of check valve on main system and the back-up system, so that can reduce any might leakage and pressure that can the accidental activation back-up system by check valve when main system is just discharged extinguishing chemical.Electric part-control:

Control system is handled the signal of receiving from the fire hazard monitoring flip flop equipment that is connected, and with the release of automatic control extinguishing chemical, starts notification device and carries out miscellaneous function.

Control appliance shown in Figure 20 is available so that various functions to be provided, and still, some feature is that all devices is common.For the I/O function, each equipment all has one or more input circuits and links to each other such as flip flop equipments such as thermal detector, smoke detector and manual start devices.Each equipment also has one or more notification device output circuits to be used for the control system warning device, and one or more release circuit is used for start discharging magnetic valve, and this releases circuit has cancellation of the circuit of release and delay selective power.All input and output circuit all are subjected to continuously monitoring.

In addition, in all control systems, can connect relay and go to carry out auxilliary function.Warning, fault and power supply status are housed on the front display of control device to be shown.If warning and fault still exist after artificially the warning of control panel being eliminated, warning can send again so.All control systems all are furnished with reserve battery.Trigger:

As shown in figure 21, flip flop equipment is reacted to external drive, to provide input signal to control system.External drive or the physical phenomenon relevant with fire, or manually booting the control action that a place takes in response to fire takes place.Flip flop equipment or the impedance of passing through to send the signal of a uniqueness or passing through to change circuit change its electrical characteristics that are connected the control system circuits for triggering.Input signal from flip flop equipment is not that alarm is exactly a failure problems, and control system is reacted in view of the above.The kind of flip flop equipment comprises ionization detector, photodetector, thermal detector, flame detector and manual start device.Start:

As shown in figure 22, the magnetic valve electric starter that is connected with control system is used for guide's bottle valve that electricity starts the extinguishing chemical system.Magnetic valve electric starter assembly comprise an electromagnetic valve component, male thread union elbow, counterpart and the stainless steel flexible hose.When it to await orders (start) when mode is linked on the control panel, have a little electric current by solenoid with the observation circuit integrality.Monitoring current disappears and will make control system make fault reaction.Announcement:

As shown in figure 23, use bell, loudspeaker and strobotron etc. to be known as the device of notification device, the system alarm state can be heard and see.All used means for signalling all are to provide electric power by one 24 VDC control system outlet line in the system.Allow a little monitoring current come the circuit integrity of this circuit is monitored by a line terminal resistance of linking on the control system output circuit.Monitoring current disappears and will make control system make fault reaction.Accessory:

As shown in figure 24, to be used to select to discharge the signal of circuit be that the deactivation main system discharges or the deactivation back-up system discharges to selector switch.The selector switch assembly comprises a detachable key switch, the contact making device of often opening, normally closed contact making device and has the single action switchboard of serigraphy label.Be contained in lip-deep assembly and comprise a simply connected bell box and liner.Software-

Set up software, as to the support of hardware and extinguishing chemical and perfect from the angle that designs, installs, fills jar and safeguard.Software also comprises the computer program of determining the quantity of extinguishing media requirement, and requires the computer program of design pipe-line system according to flowing.Computer program-computer program has been developed the design that is used for auxiliary unbalanced pipe-line system.For any completed design object, this program makes the user can select various piece in the design process, from the sequence number of engineering and engineering name until the later bill of materials is finished in design.All parts all cooperatively interact with the user and they also cooperatively interact each other, and the information that draws in a part is sent to all other part like this, are used for crosscheck and final design.

Claims (11)

1. system that controls and put out the fire in the restriceted envelope, this system uses unique noble gas mixtures to reduce the content of oxygen below the degree of supporting burning, it is characterized in that, inert gas agent wherein is stored in the pressure cylinder and distributes by bottle valve, selector valve, hose adapter and nozzle and is transported in the space of qualification, and this system has and is used for calculating the software that flows and distribute for system's design.

2. system according to claim 1 is characterized in that noble gas mixtures is made up of nitrogen, argon gas and carbon dioxide.

3. the system as claimed in claim 1 is characterized in that, noble gas mixtures is made up of 50% ± 10% nitrogen, 42% ± 10% argon gas and 8% ± 2% carbon dioxide.

4. the system as claimed in claim 1 is characterized in that, is used for the valve that the inert gas under the pressure remains in the gas cylinder can be started with manual, electronic or pneumatic mode.

5. the system as claimed in claim 1 is characterized in that, is used for that the inert gas under the pressure is remained on valve in the gas cylinder and can utilizes at valve outlet port place applied pressure and open.

6. the system as claimed in claim 1 is characterized in that, selector valve (directional control valve) can be used to guide inert gas to flow into two or more different conflagration areas any one from storing gas cylinder.

7. the system as claimed in claim 1 is characterized in that, the flexible pipe inside that the gas cylinder bottle valve is connected to concetrated pipe includes check valve, to prevent the leakage that meets accident when the incorrect connection.

8. the system as claimed in claim 1 is characterized in that, the pressure in the pipeline downstream of gas cylinder concetrated pipe is controlled under the appropriate value by the throttle orifice of an orifice plate pipe union or throttling screw nipple.

9. the system as claimed in claim 1 is characterized in that, the orifice plate pipe union includes an exterior metal sheets, has the label that shows the throttle orifice diameter on the sheet metal.

10. the system as claimed in claim 1 is characterized in that, the quantity of extinguishing media of nozzle exit pressure, each nozzle and drain time are flowed by a fluid and Distribution Calculation machine program is calculated.

11. the system as claimed in claim 1 is characterized in that, mobile and Distribution Calculation machine program can make the extinguishing chemical at three-way pipe place have 95% to be assigned to a branch, and 5% to opposite branch.

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