Summary of the invention
Vaporize fully before the purpose of this invention is to provide the carbon dioxide eruption in a kind of CO2 of making fire extinguishing system, and the carbon dioxide fire-extinguishing system inerting unit of stability of flow output.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of carbon dioxide fire-extinguishing system inerting unit, this device comprises vaporizer, vaporization controller, the terminal pressure sensor, flow-limiting valve, pressure sensor 2#, flow sensor, pressure reducer, pressure sensor 1#, control valve, wherein control valve one end connects the master control valve of fire extinguishing system through pipeline, its other end connects vaporizer through pipeline, the rear end of vaporizer connects flow-limiting valve through pressure reducer, pipeline between vaporizer and the pressure reducer is provided with pressure sensor 1#, on the pipeline between pressure reducer and the flow-limiting valve, be disposed with flow sensor and pressure sensor 2#, the pipe branch that the flow-limiting valve rear end connects becomes plurality of conduits, be separately installed with the selector valve of fire extinguishing system on every branch pipe(tube), the pipeline of selector valve rear end is provided with the terminal pressure sensor; Vaporization controller is accepted unlatching, the stop signal of fire-extinguishing apparatus controller in the fire extinguishing system, control control valve unlatching, close; Accept the signal of pressure sensor 1#, the accent of control control valve is big or open, turn down or close; Accept unlatching, the stop signal of fire-extinguishing apparatus controller in the fire extinguishing system, control vaporizer in heater unlatching, close; Accept the signal of pressure sensor 1#, control vaporizer in heater unlatching, close; Accept the signal of temperature limit switch in the vaporizer, close the heater in the vaporizer; Accept the signal of flow sensor, pressure sensor 2#, regulate the flow-limiting valve action, limited flow; Accept the signal of terminal pressure sensor, instruct the manual adjustments pressure reducer, the pressure that makes pipe end is desired value.The fire-extinguishing apparatus controller of fire extinguishing system connects master control valve, selector valve through lead.With the matching used fire-extinguishing apparatus controller of carbon dioxide fire-extinguishing system inerting unit of the present invention, fire alarm control unit, master control valve and selector valve all be the parts of traditional fire extinguishing system.
Through facts have proved, the time of its carbon dioxide inerting fire extinguishing was generally 6~8 hours, and pipe end pressure is not more than 0.3Mpa.Because CO
2Be to store, with CO with the gas-liquid two-phase form
2It must be vaporized before the eruption, this work is finished by vaporizer, thereby the vaporizer in this programme is installed in fire-extinguishing apparatus (carbon dioxide extinguisher installation) rear end, the selector valve front end, electric heater in the vaporizer is unlatching, the stop signal that receives the fire-extinguishing apparatus controller by vaporization controller, the unlatching of control electric heater, close, vaporization controller receives the signal of pressure sensor 1#, the unlatching of control electric heater, closes.Vaporization controller receives the signal of temperature limit switch, closes electric heater.Simultaneously for guaranteeing carbon dioxide extinguishing agent flow, terminal pressure, thereby pressure reducer and flow-limiting valve are installed at the selector valve front end, control the whole terminal carbon dioxide gas pressure that installs pipes by pressure reducer, control the flow of carbon dioxide extinguishing agent by flow-limiting valve, it is the signal that receives flow sensor, pressure sensor 2# by vaporization controller, the action of adjusting flow-limiting valve, limited flow; Vaporization controller receives the signal of terminal pressure sensor, instructs the manual adjustments pressure reducer, and making terminal pressure is desired value.Like this, the present invention can guarantee vaporization fully before the carbon dioxide eruption in the CO2 fire extinguishing system, and stability of flow output, thereby efficiently solves spontaneous combustion problem in storage facilities such as coal dust.And the present invention is rational in infrastructure, practicality, good economy performance.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the operation principle of carbon dioxide fire-extinguishing system inerting unit specific embodiment of the present invention is described in further detail and is described below:
The structure of carbon dioxide fire-extinguishing system inerting unit of the present invention such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7: this installs mainly by control valve 4, check valve 5, pressure sensor 1#6, pressure reducer 7, flow sensor 8, pressure sensor 2#9, flow-limiting valve 10, safety valve 11, terminal pressure sensor 13, vaporization controller 14, vaporizer 15 constitutes, wherein control valve 4 one ends connect the master control valve 3 of fire extinguishing system through pipeline, master control valve 3 is connected with the carbon dioxide extinguisher installation 1 that stores extinguishing chemical through pipeline, the other end of control valve 4 connects vaporizer 15 through pipeline, the rear end of vaporizer 15 connects flow-limiting valve 10 through pressure reducer 7, pipeline between vaporizer 15 and the pressure reducer 7 is provided with pressure sensor 1#6, on the pipeline between pressure reducer 7 and the flow-limiting valve 10, be disposed with flow sensor 8 and pressure sensor 2#9, the pipe branch that flow-limiting valve 10 rear ends connect becomes plurality of conduits, be separately installed with the selector valve 12 of fire extinguishing system on every branch pipe(tube), the pipeline of selector valve 12 rear ends is provided with pressure sensor 13, terminal pressure sensor 13 connects vaporization controller 14 through lead, and vaporization controller 14 connects control valve 4 respectively through lead, vaporizer 15, flow-limiting valve 10, pressure sensor 1#6, flow sensor 8, the fire-extinguishing apparatus controller 2 of pressure sensor 2#9 and fire extinguishing system.
Vaporization controller 14 is accepted unlatching, the stop signal of fire-extinguishing apparatus controller 2 in the fire extinguishing system, control control valve 4 unlatching, close; Accept the signal of pressure sensor 1#6, the accent of control control valve 4 is big or open, turn down or close; Accept unlatching, the stop signal of fire-extinguishing apparatus controller 2 in the fire extinguishing system, control vaporizer 15 in heater unlatching, close; Accept the signal of pressure sensor 1#6, control vaporizer 15 in heater unlatching, close; Accept the signal of temperature limit switch in the vaporizer 15, close the heater in the vaporizer 15; Accept the signal of flow sensor 8, pressure sensor 2#9, regulate flow-limiting valve 10 actions, limited flow; Accept the signal of terminal pressure sensor 13, instruct manual adjustments pressure reducer 7, the pressure that makes pipe end is desired value.Described vaporizer 15 is electrical heating or Steam Heating, and many group heating tube forms are adopted in electrical heating.Pipeline between described control valve 4 and the vaporizer 15 is provided with check valve 5; On the pipeline of described flow-limiting valve 10 rear ends safety valve 11 is installed.Described flow-limiting valve 10 is electronic adjustable flow-limiting valve, and a plurality of flow-limiting valves 10 are formed the Flow-rate adjustment group.Selector valve 12 is pneumatic selector valve.The pipe branch that described flow-limiting valve 10 rear ends connect becomes 20 branch pipe(tube)s.With carbon dioxide extinguisher installation 1, master control valve 3 and the selector valve 4 of the matching used fire-extinguishing apparatus controller 2 of this inerting scheme, fire alarm control unit, storage extinguishing chemical all be the parts of traditional fire extinguishing system, fire-extinguishing apparatus controller 2 is connected with selector valve 4, master control valve 3 respectively through lead.Control valve 4 in the utility model, check valve 5, pressure sensor 1#6, pressure reducer 7, flow sensor 8, pressure sensor 2#9, flow-limiting valve 10, safety valve 11, terminal pressure sensor 13 can adopt the existing market product sold.
See Fig. 7, Fig. 8 as can be known: vaporizer 15 is hydrostatic column, many group heating tubes 16 and temperature limit switch 18 are installed in the container, temperature limit switch 18 is connected with vaporization controller 14 through lead, many group heating tubes 16 and temperature limit switch 18 are fixing by the flange 19 of container open end, flange 19 outsides at the shell nozzle end are equipped with terminal box 17, are separately installed with air inlet pipe 20 and escape pipe 21 in the container front and back end.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 9, Figure 10, shown in Figure 11: the fire information address that vaporization controller 14 obtains 20 codings by bus, the switch acquisition device fire-extinguishing apparatus controller 2 from fire extinguishing system; Vaporization controller 14 obtains the fire extinguishing pressure information of 20 codings by bus, analog quantity acquiring device from 20 fire extinguishing arm terminal pressure sensors, and the fire information of 20 codings that fire-extinguishing apparatus controller 2 provides in the fire extinguishing pressure information of these 20 codings and the fire extinguishing system is corresponding one by one.The switch acquisition device is 21 way switch amount collectors, it has the switching value signal of 20 coding fire information addresses, the switching value signal that also has a master control valve events, wherein (1#-20# reports to the police and exports (often running), No. 1 main valve output (normally closed), contains 485 buses, 1 road communication state indicator lamp 21 way switch amount collectors, the DC24V power supply), 20 road analog quantity acquiring devices are 20 tunnel terminal pressure signal picker (0---10MPA, the input of 20 road 4---20MA signals, contain 485 buses, 1 road communication state indicator lamp, the DC24V power supply).
At Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, among Figure 14, the switch acquisition device is exactly an acquisition module in fact, be the sell goods on the existing market, X0-X19 is the switching value signal of 20 coding fire information addresses of switch acquisition device, X20 is the switching value signal of master control valve events, X21-X23 is an alternate channel, this 21 way switch amount signal is that the switch acquisition device is by single socket CZ2, CZ3, CZ4 obtains this signal from fire-extinguishing apparatus controller 2, this 20 tunnel fire information switching value signal is isolated input circuit (being made up of 24 light lotus root PC817) by photoelectricity, micro-processor interface circuit (chip 89S51) and chip P521-4 and chip 75176 are after interface CZ5 is input to the input interface CZ4 of vaporization controller 14, and the switching value signal of 1 tunnel master control valve events is isolated input circuit (being made up of 24 light lotus root PC817) by photoelectricity, micro-processor interface circuit (chip 89S51) back control master control valve 3.
At Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, among Figure 14, analog quantity acquiring device is exactly an acquisition module in fact, be the sell goods on the existing market, A0-A19 is 20 fire extinguishing pressure information road analog signalses of analog quantity acquiring device, these 20 analog signalses are that analog quantity acquiring device passes through single socket CZ2, CZ3, CZ4 obtains this signal from terminal 20 terminal pressure sensors 13, and (this circuit is by diode D2-D23 by simulated measurement input circuit for this 20 road analog signals, ZD1-ZD22 and resistance R 41-R62, R19-R40, R63-R84 forms), acquisition chip TLC1543 and chip 75176 are after interface CZ5 is input to the input interface CZ4 of vaporization controller 14.The communication interface A of vaporization controller 14, B (CZ4), this communication interface A, B is from the communication interface A of switch acquisition device, the communication interface A of B (CZ5) and analog quantity acquiring device, B (CZ5) obtains 20 way switch amount signals and 20 road analog signalses respectively, vaporization controller 14 also is provided with Switching Power Supply input interface CZ12, control valve terminal pressure feedback input control interface CZ1, heating control interface CZ2, CZ3,4 the tunnel regulate output control interface CZ13, outside input control interface CZ11, communication indication interface CZ5, heating indication interface CZ6, CZ7, be used to indicate heating-up temperature, start indication interface CZ8, stop to indicate interface CZ9, pressure input and adding temperature input interface CZ10, and adopting LED1 to show terminal pressure, LED2 shows main pipe pressure.Vaporizer 15 provides a path switching signal by a temperature limit switch 18 to the interface CZ10 of vaporization controller 14, and the interface CZ7 of the external pressure sensor signal of one road 4-20mA to vaporization controller 14 is provided; Main pipe pressure sensor 1#6 provides the pressure for vaporization signal of one road 4-20mA for the interface CZ1 of vaporization controller 14; Flow sensor 8 provides the flow detecting signal of one road 4-20mA for the interface CZ11 of vaporization controller 14.Vaporization controller 14 (one road main pipe pressure input signal 4---20MA, 4 road P worker D instrument power supplys control output, two groups add thermal control output signal, the input of one road temperature limit switch signal, one road communication state indicator lamp, 2 tunnel heating indication, 2 buttons (move, stop), lamps (running indicator, stopping light), key is set, increases key, reduces key, pressure demonstration); Flow-limiting valve 10 is regulated the flow that spurts CO2 and is remained on a setting value.20 fire extinguishing arm terminal pressure sensors 13 provide 20 codings (the fire extinguishing arm pressure information of 1#~20#), (fire extinguishing arm terminal pressure sensor export to communication module be 420mA standard electric signal) by the RS485 bus to vaporization controller.WTDY-2000 equipment is carbon dioxide extinguisher installation 1; the ability that possesses 20 districts of protection. fire-extinguishing apparatus controller 2 provides the fire address information of 20 codings to vaporization controller by the RS485 bus; (WTDY-2000 fire-extinguishing apparatus controller 2 is the switching value signal to communication module output); and provide the switching value signal (can be integrated on the communication module) of one tunnel master control valve events; the fire information address of 20 codings of WTDY-2000 fire-extinguishing apparatus controller 2 outputs; compiling respectively is 1#~20#, and corresponding one by one with 20 fire extinguishing arm terminal pressure sensor 13 items.
In sum, after vaporization controller 14 received 20 way switch amount signals and 20 road analog signalses by interface CZ4, this switching value signal that vaporization controller 14 will obtain was handled the unlatching of back by regulating output control interface CZ13 and control control valve 4, is closed through chip 75176; Vaporization controller 14 is accepted the signal of pressure sensor 1#6 by interface CZ10, and this signal is handled after the accent of control interface CZ13 control control valve 4 is big or open, turn down or close through simulated measurement input circuit; Vaporization controller 14 is accepted unlatching, the shutdown switch amount signal of fire-extinguishing apparatus controller 2 in the fire extinguishing system, vaporization controller 14 with this signal through chip 75176 with isolate that input circuit is handled after the unlatching of heater in interface CZ2, the CZ3 control vaporizer 15, close; Vaporization controller 14 is accepted the signal of pressure sensor 1#6 by interface CZ10, vaporization controller 14 with this signal through chip 75176 with isolate that input circuit is handled after the unlatching of heater in interface CZ2, the CZ3 control vaporizer 15, close; Vaporization controller 14 is accepted the signal of temperature limit switch in the vaporizer 15 by interface CZ11, vaporization controller 14 with this signal through chip 75176 with isolate that input circuit is handled after the heater in the vaporizer 15 is closed in interface CZ2, CZ3 control; Vaporization controller 14 is accepted the signal of flow sensor 8, pressure sensor 2#9 by interface CZ10, and vaporization controller 14 is handled this signal after interface CZ13 regulates flow-limiting valve 10 actions, limited flow through simulated measurement input circuit; Vaporization controller 14 is accepted the signal of terminal pressure sensor 13 through interface CZ1, and the pressure that shows according to vaporization controller 14 instructs manual adjustments pressure reducer 7, and the pressure that makes pipe end is desired value.
See Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, shown in Figure 14: each functions of components among the present invention is as follows: 1. vaporization controller: vaporization controller is the control centre of whole inerting unit, its receives the detection signal of Fire extinguisher, temperature limit switch, pressure sensor 1#, flow sensor, pressure sensor 2#, terminal pressure sensor 1~n#, the corresponding actions of controlled part in the control device: the unlatching of control valve, close; The connection of vaporizer heating power supply, shutoff; The Flow-rate adjustment of flow-limiting valve; Terminal pressure shows.The information that vaporization controller mainly provides according to WTDY-2000 fire-extinguishing apparatus controller, electric heating carburetor temperature limit switch, vapourizing temperature sensor, main pipe pressure sensor, flow detection control device and terminal pressure sensor, control being responsible for electric control valve, electric heating carburetor heating tube and the electronic flow-limiting valve of subregion arm respectively, reach the purpose of regulating interior carbon dioxide vaporization temperature of control pipe network and flow.2. control valve: the CO2 of control gas-liquid phase enters vaporizer.Vaporization controller receives unlatching, the stop signal of fire-extinguishing apparatus controller, the unlatching of control and regulation valve, closes; Vaporization controller receives the signal of pressure sensor 1#, and the accent of control and regulation valve is big or open, turn down or close.3. check valve: after preventing that Yin Wendu raises in the vaporizer, the CO that pressure increases
2, pour in down a chimney into the carbon dioxide basin.4. vaporizer: adopt electric heating tube, the CO2 of gas-liquid phase is advanced heating, obtain the CO2 of pure gas phase.The temperature inside limit switch is used for turn-offing the power supply of electric heating tube, limits the maximum temperature of CO2 heating; Vaporization controller receives unlatching, the stop signal of fire-extinguishing apparatus controller, connection, the shutoff of control electric heating tube power supply; Vaporization controller receives the signal of pressure sensor 1#, connection, the shutoff of control electric heating tube power supply, electric heating carburetor provides a way switch amount signal by a temperature limit switch to vaporization controller, and the external pressure sensor signal of one road 4-20mA is provided.5. pressure sensor 1#: by the signal of its successor's vaporization controller, control the break-make of vaporizer electric heating tube, the keying of control valve, the main pipe pressure sensor provides one road 4-20mA pressure for vaporization signal to vaporization controller.6. pressure reducer: the pressure that is used to regulate the pipeline end.Vaporization controller receives the signal of terminal pressure sensor 1~n#, shows its pressure, the manual adjustments pressure reducer, and the pressure that makes terminal pipeline is desired value.7. flow sensor: measure CO in the pipeline
2Flow, with the signal vaporization controller of passing on a skill of craft to others, regulate flow-limiting valve, the flow detection control device provides the subregion arm flow detecting signal of one road 4-20mA.8. pressure sensor 2#: measure CO in the pipeline
2Pressure, with the signal vaporization controller of passing on a skill of craft to others, be convenient to CO in the vaporization controller correction pipeline
2Flow.9. flow-limiting valve: CO in the restriction pipeline
2Flow.Vaporization controller receives the signal of flow sensor, pressure sensor 2#, and output signal is regulated the flow-limiting valve action to flow-limiting valve, regulates CO in the pipeline
2Flow.10. safety valve: the safety devices that are inerting unit.Simultaneously after inerting unit quits work, remaining CO in the inerting unit
2, under the effect of environment temperature, cause CO in the inerting unit
2Pressure raise, also by this discharge of safety valve.11. terminal pressure sensor 1~n#: measure CO in the terminal pipeline
2Pressure, with the signal vaporization controller of passing on a skill of craft to others, be convenient to regulate CO in the terminal pipeline with pressure reducer
2Pressure.In Fig. 6, after fire alarm control unit obtained fire signal, the position in decision signal source opened the selector valve 4 of master control valve 3 and n# subregion for fire-extinguishing apparatus controller 2, fire-extinguishing apparatus controller 2 thereby send n# subregion enabling signal; Close the selector valve 4 of master control valve 3 and n# subregion when time-delay certain hour fire-extinguishing apparatus controller 2.In the present invention, the circuit of vaporization controller 14, switch acquisition device and analog quantity acquiring device can adopt conventional circuit structure, the components and parts that the employed components and parts of all circuit can adopt the existing market to sell.
The present invention is achieved in that system is master controller by vaporization controller 14, and it obtains startup, stops and spurting regional information by 485 buses from the switch acquisition converter, obtains analog quantity acquiring device information by bus, and shows terminal pressure.During startup, vaporization controller 14 is opened the arm control valve when main pipe pressure is lower than 1.6MPA, make liquid CO
2Enter and be responsible for the thermal treatment zone, when being heated to main pipe pressure, close control valve greater than 7MPA.The CO of big pressure
2Gas, by pressure-reducing valve, pressure is reduced to 0.8MPA, enters flow controlling unit, and the flow by in advance is given, and the flow feedback data, regulates electric control valve by the PID adjusting apparatus and provides than stable flow rate and export.Control to guarantee reliably the inerting of object of protection to be put out a fire.
Carbon dioxide fire-extinguishing system inerting unit of the present invention is not limited to the scope of the specific embodiment, and all utilize innovation and creation that the present invention conceives all at the row of protection.