CN103885430A - Interlocking logic control system for chemical fire explosion safety test cabin system - Google Patents
Interlocking logic control system for chemical fire explosion safety test cabin system Download PDFInfo
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Abstract
The invention provides an interlocking logic control system which is arranged on a main control device and used for controlling operation of devices in a safety test cabin, and therefore a whole fire explosion safety test process is achieved. According to a chemical fire explosion safety test cabin system with the interlocking logic control system, out-of-control reaction, combustion explosion, decomposition explosion and other dangers generated in a large-scale chemical risk assessment test process are eliminated, waste liquid, waste gas and waste residues generated in the test process are collected at the same time for centralized processing, intrinsic safety of the fire explosion risk test process is improved, and environment pollution is lowered.
Description
Technical field
The present invention relates to Safe production of chemical industry technical field, relate in particular to the safety test cabin system for the danger qualification assessment of chemicals.
Background technology
In chemicals risk assessment process of the test, the runaway reaction test of the aspect such as conventionally need to carry out hazardous chemical storage, load in mixture, may run into potential danger material and high energy reaction, if operation is controlled and improperly will be caused fire, blast, the accident such as poisoning, wherein with explosion accident harm maximum.Once blast, instantaneous a large amount of gas, blast fragment, the part etc. of releasing, sustain an injury testing crew on the scene, and buildings is destroyed.If a large amount of inflammable or combustible chemical releasing catches fire, can make fire spread, cause serious loss.Therefore, anti-explosion safety and the protection question of chemical fire explosion hazard large-scale experiment platform are extremely important.
External less about the report in chemical fire explosion safety experimental test cabin.
US6644165 discloses a kind of antiknock pressurized capsule, for storing explosive, after the blast of prevent exploding product, causes major accident consequence.
US7506568 and US7765910 disclose a kind of blast pressurized capsule, for storage, transport and the processing of the equipment that contains explosive biology or chemical reagent.
At present, the fire explosion experimental cabin of safety technique company exploitation mostly abroad is pure explosive test closed cabin body, taking Ai Disai benefactor department of the U.S. as representative.The said firm has developed testing laboratory blast cabin and industrial explosion cabin, can carry out explosibility test test, but cabin body maximum gauge on sale is only two meters, without backup systems such as gas displacement, Temperature and Humidity Control, video acquisitions, greatly limited its in hazardous chemical storage, the application of aspect such as load in mixture.
Domestic petroleum chemical field relates to a large amount of hazardous chemicals, in chemicals risk assessment process of the test, as potential danger material and high energy reaction, has the possibility that causes fire explosion.The dangerous testing research of large scale chemicals that domestic a large amount of danger is higher, as chemical compatibility test, load in mixture explosive test, adiabatic storage test, etc. the thermal runaway reaction test such as thermmal storage test, chemicals packaging heat stabilization test, and gas phase explosion test and the test of chemicals blast characteristics, because danger is larger, test difficulty is large, the more difficult development of correlation test research, many key foundation for security data cannot obtain.Fire explosion experimental cabin is one of effective way solving the dangerous test process safety problem of above-mentioned chemicals.Domestic fire explosion experimental cabin is mainly used in the testing research of military industry field explosive, not yet external disclosure.And explosive test cabin is also had no to report for the research of the dangerous field tests of chemicals.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of chemical fire explosion safety experimental cabin system with chain logic control system, it eliminates the harm of the aspects such as the runaway reaction that produces in large scale chemicals risk assessment process of the test, combustion explosion, decomposition explosion, waste liquid, waste gas, the waste residue of collecting process of the test generation focus on simultaneously, in improving Fire risk analysis test process intrinsic safety, also play the effect that reduces environmental pollution.
For solving the problems of the technologies described above, the invention provides a kind of chain logic control system, this set-up of control system, on main control unit, by running and the control of the each device in chain logic control system control safety test cabin, thereby is realized whole fire explosion safety test process.
Wherein, described chain logic control system comprises:
Data acquisition and processing (DAP) module, it obtains data for the each proving installation of acquisition and processing safety test cabin system and instrument hatch door mechanism, fire fighting equipment, Temperature and Humidity Control, vacuum pump, pipe valve, gas-monitoring, temperature monitoring, pressure monitoring, video monitoring, dynamic pressure monitoring etc., pass through data communication network, pass to touch screen computer, in touch screen computer, carry out data processing, feed back to each control device in safety test cabin, thereby realizing whole fire explosion safety test process;
Humiture control module, it,, for gathering the temperature and humidity signal in safety test cabin, carries out stepless control to the valve of temperature and humidity in Control experiment cabin, makes the temperature and humidity in safety test cabin reach testing requirements;
Cabin body automatic control module, it is a sequence logical control works fine module, can, according to the requirement of different step, as the switch of hatch door, the charged rear interlock protection of cabin body, control or adopt automatic linkage control to the individual equipment in safety test cabin;
Fire-fighting control module, it controls fire temperature sensor, transfer signals to PLC analog input module, PLC is after computing, adopt corresponding logic to judge in cabin whether breaking out of fire, and whether starting fire-fighting device device, fire-fighting control module also can be switched to manual control, whether starts fire fighting extinguisher by artificial judgment;
Gas displacement discharge and discharging of waste liquid control module, in the time that needs carry out gas displacement, by the control to exhaust regulating valve, can be opened exhaust regulating valve slowly, to control and to alleviate the pressure in the body of cabin; In the time that cabin body internal pressure drops to certain degree, the aperture of controlled superzapping contracting air inlet variable valve, thus realize the adjusting of air feed speed; Also can realize discharge waste liquid by controlling corresponding discharging of waste liquid valve to discharging of waste liquid;
Synergic system control module, it controls water supply, power supply, air feed and steam process pipe and valve arrangement, and its parameter is sent to the load module of PLC by sensor, and PLC can control them respectively according to the requirement of technique.
Wherein, described chain logic control system is only by above-mentioned module composition.
The present invention also provides a kind of method of testing the test of chemical fire explosion safety, chemicals to be detected is positioned in the above-mentioned cabin body of chemical fire explosion safety test cabin system that is provided with described chain logic control system, close hatch door, carry out the control of process of the test by external data line, when off-test, waste liquid, waste gas, waste residue that process of the test is produced focus on, and reduce environmental pollution.
The present invention also provides the application of above-mentioned chain logic control system in test chemical fire explosion safety process of the test.
Beneficial effect of the present invention:
Provided by the invention have a chain logic control system chemical fire explosion safety experimental cabin system, set up for thering is the testing experiment of hazardous chemical explosion hazard, should there is extremely strong fatigue resistence and permanance to the impact of resisting blast fragment and gaseous tension, be different from the fire-proof and explosion-proof testing laboratory of normal conventional:
Chemical fire explosion safety experimental cabin should have certain explosion-proof, to adapt to the needs of explosive test.While blasting in process of the test, cabin body load-carrying members not only can stand the impact of the highest malleation of blast and minimum negative pressure variation, can also stand the shooting of steel plate fragment and part, avoid wrecking.
Chemical fire explosion safety experimental cabin can be eliminated the harm of the aspects such as the runaway reaction that produces in large scale chemicals risk assessment process of the test, combustion explosion, decomposition explosion, very necessary for improving intrinsic safety in Fire risk analysis test process.
Waste liquid, waste gas, waste residue that chemical fire explosion safety experimental cabin can be collected experimentation generation focus on, and have eliminated the environmental pollution of fire explosion experimentation.
Brief description of the drawings
Fig. 1 safety experiment cabin system plane figure;
Fig. 2 safety test storehouse outboard profile;
Fig. 3 safety test storehouse front view (FV);
Fig. 4 safety experiment bulkhead plan.
Embodiment
The invention provides a kind of safety test cabin system, this safety test cabin system is installed in factory building, and it comprises experimental cabin body, fire-fighting device, temperature humidity regulating device, air ventilation device, test monitors control device, main control unit, fire-fighting device, temperature humidity regulating device, air ventilation device is arranged in parallel at factory building one side, and test monitors that control device comprises that test monitors that control flow and test monitor switch board, and main control unit comprises main panel and main control cabinet, and test monitors control flow, main panel, test monitors switch board, main control cabinet is arranged in independently in same room, test source of the gas pulpit is set on fire-fighting device right side, user trial source of the gas pulpit is connected by gas source pipe with experimental cabin body, gas source pipe is arranged in source of the gas pipe trench, test monitors control flow and is connected by cable with experimental cabin body with main panel, temperature humidity regulating device, fire-fighting device is connected by pipeline with experimental cabin body.
Described experimental cabin body can ensure in explosive test process, and at static pressure 0～10.0MPa, intact under 10～500 DEG C of conditions of transient temperature, experimental cabin body preferably adopts Horizontal cylinder structure, in cabin in path length be 2～5m, length is 4～10m.
Described cylinder material adopts corrosion resistant plate, and the flange using adopts 16Mn II level forging.
On described experimental cabin body, be provided with quick-opening device, it adopts 35CrMo II level forging.
The wall portion of described cabin body comprises five layers, is respectively from inside to outside interior sacrifice layer, interior cushion, test bulkhead, thermofin and surrounding layer.
Interior sacrifice layer is interchangeable layer, and adopting dismountable bolt to be connected with interior cushion can change easily under the prerequisite of not destroying pressurized capsule globality, its material selection stainless steel or duralumin.
Interior cushion adopts polycarbonate material; Test bulkhead adopts 304 stainless steels, thickness range 10～80mm, preferably 50mm; Thermofin adopts glass fibre, asbestos, rock wool or silicate material; Surrounding layer is taggers tin; Interior cushion and sacrifice layer can be replaced mutually.
The intrinsic floor of experimental cabin adopts detachable grid floor, must bear 1t/m
2, grid floor conveying track and top hanging apparatus in the body of cabin, bearing weight ability is 1t.
On experimental cabin body, also have view window, on exhausr port, lower leakage fluid dram, water, electricity and gas import and export, data line converting interface, fire-fighting system entrance, various interface must not affect the designing requirement of pressurized capsule for static pressure, temperature, and water, gas interface can be realized closing function.Various interface is designed to plug in tray, ensures the sealing of cabin body.
Water, electricity and gas import is three interfaces, is respectively water inlet, the gentle import of electric import, and water, electricity and gas import is one group of fast interface on the whole, data line converting interface is connected with register system with control system.
In experimental cabin body, also there is the overpressure prevention device such as rupture disk or safety valve, in cabin, be provided with illuminator, there is explosion prevention function, meet the needs of real-time video monitoring daylighting.
Further, can also on chemical fire explosion safety experimental cabin body, the acoustic-optic alarm that cabin body opens the door, closes the door be set.
Described quick-opening device is arranged to two halves formula band type structure, it is by spherical seal head door body, clip, flange, safety interlock, fast opening mechanism, O-ring seal, fluid pressure drive device, aiding support forms, the opening and closing movement of spherical seal head door body relies on fluid pressure drive device to complete, the sealing of spherical seal head Men Tiyu flange face realizes fastening by the groove inclined-plane of clip, and be designed with aiding support in door body bottom, make a body not because the reasons such as deadweight produce displacement deformation, guarantee installation accuracy and the folding precision of a body, in the center of described spherical seal head door body, a view window is set, in view window inside, cover plate is set.
Spherical seal head door body and flange adopt 16Mn II level forging, and clip selects 35CrMo II level forging process to form.
It is 0 DEG C～100 DEG C that described temperature humidity regulating device can regulate the temperature range in test cabin, humidity range is 5%～95%, indoor environment is the necessary condition that warranty test successfully carries out, according to the requirement of technique, the temperature and humidity signal of control system in can acquisition test cabin, corresponding equipment is carried out to stepless control, make temperature and humidity in cabin reach the requirement of test.
Temperature control equipment in described temperature humidity regulating device comprises air-cooled low-temperature glycol handpiece Water Chilling Units and electric heater, air-cooled low-temperature glycol handpiece Water Chilling Units output temperature can reach-4～-8 DEG C, the interior environment temperature of experimental cabin that can realize low-temperature zone regulates, it can regulate 0 DEG C～25 DEG C of low-temperature zone temperature in test cabin, electric heater can regulate 25 DEG C～100 DEG C of high temperature section temperature in test cabin, ethylene glycol cold water unit is installed on the inside of test cabin body, electric heater can be arranged on inside or the outside of test cabin body, while being arranged on experimental cabin inside, when use, inner air is directly heated, the benefit of this mode is to reduce the hidden danger of external unit and pipeline and high temperature, the efficiency of heating surface is high, but must consider the mounting structure of device interior electric heater and heat the impact on equipment while use, when being installed on test cabin body exterior, need to increase calorifier and be connected to the hot air duct of test cabin body, the drawback of this mode is newly added equipment and needs place to arrange, when test indoor environment will reach 100 DEG C, to the requirement of equipment and warm-air pipe very high (hot blast approximately approaches 150 DEG C), fire-retardant fireproof calling hierarchy improves simultaneously, benefit is to reduce the impact of well heater on equipment.
The moisture control unit of described temperature humidity regulating device comprises hand stop valve, electric butterfly valve, efficient blower, humidity measuring instrument and humidity conditioner, described humidity measuring instrument is 3, lay respectively in the middle of import, outlet and the cabin body of cabin body, the number of described efficient blower is 2, the import and the export pipeline place that lay respectively at cabin body, fan blower pipeline is established motorized valve; Described hand stop valve and electric butterfly valve are positioned on the import and export pipeline of humidity conditioner, and hand stop valve is positioned at the one end near cabin body, and described electric butterfly valve is positioned at described close humidity control one end is set.
Described air ventilation device comprises vacuum pump, detector, to blank pipe road, to blank pipe road adjustable electric variable valve, vacuum-pumping pipeline, vacuum-pumping pipeline remote-control cut-off valve, described exhausr port is positioned at the exhaust ports on top, safety test cabin, described to blank pipe road be jointly connected to cabin top exhaust ports in parallel with vacuum-pumping pipeline, described vacuum-pumping pipeline remote-control cut-off valve is positioned at vacuum pump front end, described blank pipe road adjustable electric variable valve is positioned on blank pipe road, described detector is positioned on the export pipeline of vacuum pump, described vacuum pump is dry vacuum pump, described various valve is adjustable electric valve.Air intake opening and exhausr port are all connected on same interface.
Described gas displacement equipment is to design for safety test cabin gas displacement discharge, after off-test, experimental cabin is opened blank pipe road adjustable electric variable valve CV302, then pneumatic control valve is slowly opened, release of pressure discharging waste gas is to treating apparatus, after cabin internal pressure drops to below 0.1Mpa (gauge pressure), close CV302, open vacuum-pumping pipeline remote-control cut-off valve, be evacuated to cabin internal pressure and be down to 5kPa, opening CV302 passes into air and replaces, repeat aforesaid operations, after the every detection qualified of gas in cabin, stop displacement, close experimental cabin gas admittance valve, be replaced.
Extinguishing device in fire-fighting device comprises mixed gas IG541 fire-suppression bottle, carbon-dioxide fire engine bottle, nitrogen extinguishing bottle and water fire-suppression bottle, and fire plant comprises sense cigarette prior-warning device, temperature-sensitive warning device and extinguishing device.
Fire-fighting device design is divided into automatic, electric manual, three kinds of operating modes of mechanical, hand-driven, taking carbon dioxide as example.
A automatic operating: when feeling cigarette prior-warning device detection alarm in protected location, send fire alarm early warning signal, alarm host machine is sent early warning signal, audible-visual annunciator is reported to the police, and reports to the police when temperature-sensitive warning device, sends fire alarm signal, host-initiated time delay in 30 seconds, starts extinguishing device fire extinguishing after 30 seconds;
The electric manual operating mode of b: automatic detection alarm, send fire alarm, carry out fire extinguishing through the artificial electric fire extinguishing system that manually boots, no matter fire extinguishing control knob is in that a kind of operating mode, when thinking while sending fire alarm, can use the hand control box of this fire zone, the electric fire extinguishing system that manually boots is put out a fire;
C mechanical, hand-driven operating mode:
Range estimation is reported to the police, and sends fire alarm, breaks down at electric control system, can not carry out in the situation of fire extinguishing instruction; Find fire alarm, due to power supply break down or automatic detection alarm malfunctioning, can not carry out fire extinguishing instruction situation under;
Must carry out at carbon-dioxide fire engine bottle station, first take out the insurance on the starter gear solenoid valve in fire extinguishing region, press emergent handle, make fire extinguishing system work, carry out fire-extinguishing function concurrently, but this must be at the equipment that close in advance impact fire extinguishing effect.
After fire extinguishing system release of carbon dioxide fire extinguishing agent, in situation about having put out through inspection confirmation fire, open ventilation exchange system, after waste gas is discharged totally, just permission personnel enter.
Further, described safety test cabin system is only made up of said apparatus.
Described chemical fire explosion safety experimental cabin system also has chain logic control system, this set-up of control system is on main control unit, by running and the control of the each device in chain logic control system control safety test cabin, thereby realize whole fire explosion safety test process.
Described chain logic control system comprises:
Data acquisition and processing (DAP) module, it obtains data for the each proving installation of acquisition and processing safety test cabin system and instrument hatch door mechanism, fire fighting equipment, Temperature and Humidity Control, vacuum pump, pipe valve, gas-monitoring, temperature monitoring, pressure monitoring, video monitoring, dynamic pressure monitoring etc., pass through data communication network, pass to touch screen computer, in touch screen computer, carry out data processing, feed back to each control device in safety test cabin, thereby realizing whole fire explosion safety test process;
Humiture control module, it,, for gathering the temperature and humidity signal in safety test cabin, carries out stepless control to the valve of temperature and humidity in Control experiment cabin, makes the temperature and humidity in safety test cabin reach testing requirements;
Cabin body automatic control module, it is a sequence logical control works fine module, can, according to the requirement of different step, as the switch of hatch door, the charged rear interlock protection of cabin body, control or adopt automatic linkage control to the individual equipment in safety test cabin;
Fire-fighting control module, it controls fire temperature sensor, transfer signals to PLC analog input module, PLC is after computing, adopt corresponding logic to judge in cabin whether breaking out of fire, and whether starting fire-fighting device device, fire-fighting control module also can be switched to manual control, whether starts fire fighting extinguisher by artificial judgment;
Gas displacement discharge and discharging of waste liquid control module, in the time that needs carry out gas displacement, by the control to exhaust regulating valve, can be opened exhaust regulating valve slowly, to control and to alleviate the pressure in the body of cabin; In the time that cabin body internal pressure drops to certain degree, the aperture of controlled superzapping contracting air inlet variable valve, thus realize the adjusting of air feed speed; Also can realize discharge waste liquid by controlling corresponding discharging of waste liquid valve to discharging of waste liquid;
Synergic system control module, it controls water supply, power supply, air feed and steam process pipe and valve arrangement, and its parameter is sent to the load module of PLC by sensor, and PLC can control them respectively according to the requirement of technique.
Further, described chain logic control system is only by above-mentioned module composition.
The present invention also provides a kind of method of testing the test of chemical fire explosion safety, chemicals to be detected is positioned in the above-mentioned cabin of chemical fire explosion safety test cabin that is provided with chain logic control system, close hatch door, carry out the control of process of the test by external data line, when off-test, waste liquid, waste gas, waste residue that process of the test is produced focus on, and reduce environmental pollution.
Carrying out in the process of chemical fire explosive test, the safety test cabin that is provided with linkage control system provided by the invention not only can obtain temperature, static state/dynamic pressure, video data, and the design of cabin body load-carrying members and interior cushion, interior sacrifice layer can stand the impact of the highest malleation of blast and minimum negative pressure variation, and stand the shooting of steel plate fragment and part, avoid cabin body to wreck.Sacrifice layer is designed to detachable pattern, in the time being damaged, can change.Waste liquid, waste gas, waste residue that safety experimental cabin can also produce process of the test focus on, and reduce environmental pollution.In process of the test, by the variation of correlation parameter in interlock logic control system Control experiment cabin, ensure safe and stable operation in cabin.
Open the door actual conditions checking of experimental cabin: temperature lower than 50 degree, oxygen concentration be greater than 19.5%, combustable gas concentration is less than 0.4%, CO concentration is greater than 24ppm ,-1kPa< gauge pressure <1kPa, concentration of hydrogen sulfide is less than 10ppm, fire-fighting device equipment, exhaust regulating valve in closed condition.
Operation demonstration when test hatch door open mode: gas displacement discharge module can not start, fire-fighting system control module can not start, and has special button in case of emergency can press and starts fire-fighting system control module.
Operation demonstration when experimental cabin door closure state: except the hand stop valve of temperature and humidity control system circulation line, all valves are in closed condition.
Experimental cabin power down mode checking: all motorized valves are all in closed condition.
Other interlocked control state verifications: take out negative pressure system and exhausr port valve and can not open simultaneously, take out and have protection when negative pressure be opened, be taken out to negative pressure system and scupper valve can not to certain pressure the used time; vacuum pump interlock shutdown, a manual unlocking button is set; guarantee if desired to open in time hatch door, the charged rear interlock protection of cabin body, the acoustic-optic alarm that cabin body opens the door, closes the door is set; should have any different with fire-fighting system, alarm button in cabin is set, prevent operating personnel to close in cabin.
Carrying out in the process of chemical fire explosion test, not only can obtain temperature, static state/dynamic pressure, video data, and the design of cabin body load-carrying members and interior cushion, interior sacrifice layer can stand the impact of the highest malleation of blast and minimum negative pressure variation, and stand the shooting of steel plate fragment and part, avoid cabin body to wreck.Sacrifice layer is designed to detachable pattern, in the time being damaged, can change.Waste liquid, waste gas, waste residue that safety experimental cabin can also produce experimentation focus on, and reduce environmental pollution.In experimentation, by the variation of correlation parameter in interlock logic control system control Laboratory Module, ensure safe and stable operation in cabin.
Below adopt embodiment and accompanying drawing to describe embodiments of the present invention in detail, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
As shown in Figure 1, safety experiment cabin system provided by the invention comprises experimental cabin body, fire-fighting device, temperature humidity regulating device, air ventilation device, test monitors control device, main control unit and experimental cabin body, fire-fighting device, temperature humidity regulating device, air ventilation device is arranged in parallel at factory building one side, test monitors that control device comprises that test monitors that control flow and test monitor switch board, main control unit comprises main panel and main control cabinet, test monitors control flow, main panel, test monitors switch board, main control cabinet is arranged in independently in same room, test source of the gas pulpit is set on fire-fighting device right side, user trial source of the gas pulpit is connected by gas source pipe with experimental cabin body, gas source pipe is arranged in source of the gas pipe trench, test monitors control flow and is connected by cable with experimental cabin body with main panel, temperature humidity regulating device, fire-fighting device is connected by pipeline with experimental cabin body.
As shown in Figures 2 and 3, on described experimental cabin body, be provided with quick-opening device, the intrinsic floor of experimental cabin adopts detachable grid floor, on experimental cabin body, also there is view window, upper exhausr port, lower leakage fluid dram, water, electricity and gas is imported and exported, data line converting interface, fire-fighting system entrance, in experimental cabin body, also there is the overpressure prevention device such as rupture disk or safety valve, in cabin, be provided with illuminator, there is explosion prevention function, meet the needs of real-time video monitoring daylighting, on chemical fire explosion safety experimental cabin body, cabin body being set opens the door, the acoustic-optic alarm of closing the door.
Described quick-opening device is arranged to two halves formula band type structure, it is by spherical seal head door body, clip, flange, safety interlock, fast opening mechanism, O-ring seal, fluid pressure drive device, aiding support forms, the opening and closing movement of spherical seal head door body relies on fluid pressure drive device to complete, the sealing of spherical seal head Men Tiyu flange face realizes fastening by the groove inclined-plane of clip, and be designed with aiding support in door body bottom, make a body not because the reasons such as deadweight produce displacement deformation, guarantee installation accuracy and the folding precision of a body, in the center of described spherical seal head door body, a view window is set, in view window inside, cover plate is set.
As shown in Figure 4, the wall portion of described cabin body comprises five layers, be respectively from inside to outside interior sacrifice layer, interior cushion, test bulkhead, thermofin and surrounding layer, interior sacrifice layer is interchangeable layer, adopting dismountable bolt to be connected with interior cushion can change easily under the prerequisite of not destroying pressurized capsule globality, its material selection stainless steel or duralumin.
It is 0 DEG C～100 DEG C that described temperature humidity regulating device can regulate the temperature range in test cabin, humidity range is 5%～95%, indoor environment is the necessary condition that warranty test successfully carries out, according to the requirement of technique, the temperature and humidity signal of control system in can acquisition test cabin, corresponding equipment is carried out to stepless control, make temperature and humidity in cabin reach the requirement of test.Temperature control equipment in described temperature humidity regulating device comprises air-cooled low-temperature glycol handpiece Water Chilling Units and electric heater, air-cooled low-temperature glycol handpiece Water Chilling Units output temperature can reach-4～-8 DEG C, the interior environment temperature of experimental cabin that can realize low-temperature zone regulates, it can regulate 0 DEG C～25 DEG C of low-temperature zone temperature in test cabin, electric heater can regulate 25 DEG C～100 DEG C of high temperature section temperature in test cabin, ethylene glycol cold water unit is installed on the inside of test cabin body, electric heater can be arranged on inside or the outside of test cabin body, while being arranged on experimental cabin inside, when use, inner air is directly heated, the benefit of this mode is to reduce the hidden danger of external unit and pipeline and high temperature, the efficiency of heating surface is high, but must consider the mounting structure of device interior electric heater and heat the impact on equipment while use, when being installed on test cabin body exterior, need to increase calorifier and be connected to the hot air duct of test cabin body, the drawback of this mode is newly added equipment and needs place to arrange, when test indoor environment will reach 100 DEG C, to the requirement of equipment and warm-air pipe very high (hot blast approximately approaches 150 DEG C), fire-retardant fireproof calling hierarchy improves simultaneously, benefit is to reduce the impact of well heater on equipment.
The moisture control unit of described temperature humidity regulating device comprises hand stop valve, electric butterfly valve, efficient blower, humidity measuring instrument and humidity conditioner, described humidity measuring instrument is 3, lay respectively in the middle of import, outlet and the cabin body of cabin body, the number of described efficient blower is 2, the import and the export pipeline place that lay respectively at cabin body, fan blower pipeline is established motorized valve; Described hand stop valve and electric butterfly valve are positioned on the import and export pipeline of humidity conditioner, and hand stop valve is positioned at the one end near cabin body, and described electric butterfly valve is positioned at described close humidity control one end is set.
Described air ventilation device comprises vacuum pump, detector, startup variable valve, air intake opening remote-control cut-off valve and exhausr port remote-control cut-off valve, described exhausr port remote-control cut-off valve is positioned at the exhaust ports in safety test cabin, described air intake opening remote-control cut-off valve is positioned at the air intake opening place in safety test cabin, described detector is positioned on the export pipeline of vacuum pump, described vacuum pump is dry vacuum pump, and described various valves are adjustable electric valve.Described gas displacement equipment is to design for safety test cabin gas displacement discharge, after off-test, experimental cabin exhausr port connects remote-control cut-off valve and opens, then pneumatic control valve is slowly opened, release of pressure discharging waste gas is to treating apparatus, after dropping to below 0.1Mpa (gauge pressure), cabin internal pressure opens experimental cabin air intake opening remote-control cut-off valve, regulate air feed speed to replace by pneumatic control valve, compressor out of service after the every detection qualified of gas in cabin, close experimental cabin gas admittance valve, be replaced.
Extinguishing device in described fire-fighting device comprises mixed gas IG541 fire-suppression bottle, carbon-dioxide fire engine bottle, nitrogen extinguishing bottle and water fire-suppression bottle, and fire plant comprises sense cigarette prior-warning device, temperature-sensitive warning device and extinguishing device.Fire-fighting device design is divided into automatic, electric manual, three kinds of operating modes of mechanical, hand-driven, taking carbon dioxide as example.A automatic operating: when feeling cigarette prior-warning device detection alarm in protected location, send fire alarm early warning signal, alarm host machine is sent early warning signal, audible-visual annunciator is reported to the police, and reports to the police when temperature-sensitive warning device, sends fire alarm signal, host-initiated time delay in 30 seconds, starts extinguishing device fire extinguishing after 30 seconds; The electric manual operating mode of b: automatic detection alarm, send fire alarm, carry out fire extinguishing through the artificial electric fire extinguishing system that manually boots, no matter fire extinguishing control knob is in that a kind of operating mode, when thinking while sending fire alarm, can use the hand control box of this fire zone, the electric fire extinguishing system that manually boots is put out a fire; C mechanical, hand-driven operating mode: range estimation is reported to the police, and sends fire alarm, breaks down at electric control system, can not carry out in the situation of fire extinguishing instruction; Find fire alarm, due to power supply break down or automatic detection alarm malfunctioning, can not carry out fire extinguishing instruction situation under; Must carry out at carbon-dioxide fire engine bottle station, first take out the insurance on the starter gear solenoid valve in fire extinguishing region, press emergent handle, make fire extinguishing system work, carry out fire-extinguishing function concurrently, but this must be at the equipment that close in advance impact fire extinguishing effect.After fire extinguishing system release of carbon dioxide fire extinguishing agent, in situation about having put out through inspection confirmation fire, open ventilation exchange system, after waste gas is discharged totally, just permission personnel enter.
Described chemical fire explosion safety experimental cabin system also has chain logic control system, this set-up of control system is on main control unit, by running and the control of the each device in chain logic control system control safety test cabin, thereby realize whole fire explosion safety test process.
Described chain logic control system comprises: data acquisition and processing (DAP) module, it obtains data for each proving installation in acquisition and processing safety test cabin, pass through data communication network, pass to touch screen computer, in touch screen computer, carry out data processing, feed back to each control device in safety test cabin, thereby realizing whole fire explosion safety test process; Humiture control module, it,, for gathering the temperature and humidity signal in safety test cabin, carries out stepless control to the valve of temperature and humidity in Control experiment cabin, makes the temperature and humidity in safety test cabin reach testing requirements; Cabin body automatic control module, it is a sequence logical control works fine module, can, according to the requirement of different step, as the switch of hatch door, the charged rear interlock protection of cabin body, control or adopt automatic linkage control to the individual equipment in safety test cabin; Fire-fighting control module, it controls fire temperature sensor, transfer signals to PLC analog input module, PLC is after computing, adopt corresponding logic to judge in cabin whether breaking out of fire, and whether starting fire-fighting device device, fire-fighting control module also can be switched to manual control, whether starts fire fighting extinguisher by artificial judgment; Gas displacement discharge and discharging of waste liquid control module, in the time that needs carry out gas displacement, by the control to exhaust regulating valve, can be opened exhaust regulating valve slowly, to control and to alleviate the pressure in the body of cabin; In the time that cabin body internal pressure drops to certain degree, the aperture of controlled superzapping contracting air inlet variable valve, thus realize the adjusting of air feed speed; Also can realize discharge waste liquid by controlling corresponding discharging of waste liquid valve to discharging of waste liquid; Synergic system control module, it controls water supply, power supply, air feed and steam process pipe and valve arrangement, and its parameter is sent to the load module of PLC by sensor, and PLC can control them respectively according to the requirement of technique.
The present invention also provides a kind of method of testing the test of chemical fire explosion safety, chemicals to be detected is positioned in the cabin body of above-mentioned chemical fire explosion safety test cabin system, close hatch door, carry out the control of process of the test by external data line, when off-test, waste liquid, waste gas, waste residue that process of the test is produced focus on, and reduce environmental pollution.
Carrying out in the process of chemical fire explosive test, the safety test cabin that is provided with linkage control system provided by the invention not only can obtain temperature, static state/dynamic pressure, video data, and the design of cabin body load-carrying members and interior cushion, interior sacrifice layer can stand the impact of the highest malleation of blast and minimum negative pressure variation, and stand the shooting of steel plate fragment and part, avoid cabin body to wreck.Sacrifice layer is designed to detachable pattern, in the time being damaged, can change.Waste liquid, waste gas, waste residue that safety experimental cabin can also produce process of the test focus on, and reduce environmental pollution.In process of the test, by the variation of correlation parameter in interlock logic control system Control experiment cabin, ensure safe and stable operation in cabin.
Open the door actual conditions checking of experimental cabin: temperature lower than 50 degree, oxygen concentration be greater than 19.5%, combustable gas concentration is less than 0.4%, CO concentration is greater than 24ppm ,-1kPa< gauge pressure <1kPa, concentration of hydrogen sulfide is less than 10ppm, fire-fighting device equipment, exhaust regulating valve in closed condition.
Operation demonstration when test hatch door open mode: gas displacement discharge module can not start, fire-fighting system control module can not start, and has special button in case of emergency can press and starts fire-fighting system control module.
Operation demonstration when experimental cabin door closure state: except the hand stop valve of temperature and humidity control system circulation line, all valves are in closed condition.
Experimental cabin power down mode checking: all motorized valves are all in closed condition.
Other interlocked control state verifications: take out negative pressure system and exhausr port valve and can not open simultaneously, take out and have protection when negative pressure be opened, be taken out to negative pressure system and scupper valve can not to certain pressure the used time; vacuum pump interlock shutdown, a manual unlocking button is set; guarantee if desired to open in time hatch door, the charged rear interlock protection of cabin body, the acoustic-optic alarm that cabin body opens the door, closes the door is set; should have any different with fire-fighting system, alarm button in cabin is set, prevent operating personnel to close in cabin.
Carrying out in the process of chemical fire explosion test, not only can obtain temperature, static state/dynamic pressure, video data, and the design of cabin body load-carrying members and interior cushion, interior sacrifice layer can stand the impact of the highest malleation of blast and minimum negative pressure variation, and stand the shooting of steel plate fragment and part, avoid cabin body to wreck.Sacrifice layer is designed to detachable pattern, in the time being damaged, can change.Waste liquid, waste gas, waste residue that safety experimental cabin can also produce experimentation focus on, and reduce environmental pollution.In experimentation, by the variation of correlation parameter in interlock logic control system control Laboratory Module, ensure safe and stable operation in cabin.
All above-mentioned these intellecture properties of primary enforcement, do not set restriction this new product of other forms of enforcement and/or new method.Those skilled in the art will utilize this important information, and foregoing amendment, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above, be only preferred embodiment of the present invention, is not the restriction of the present invention being made to other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (5)
1. a chain logic control system, is characterized in that: described set-up of control system, on main control unit, by running and the control of the each device in chain logic control system control safety test cabin, thereby is realized whole fire explosion safety test process.
2. chain logic control system as claimed in claim 1, is characterized in that, comprising:
Data acquisition and processing (DAP) module, it obtains data for the each proving installation of acquisition and processing safety test cabin system and instrument hatch door mechanism, fire fighting equipment, Temperature and Humidity Control, vacuum pump, pipe valve, gas-monitoring, temperature monitoring, pressure monitoring, video monitoring, dynamic pressure monitoring etc., pass through data communication network, pass to touch screen computer, in touch screen computer, carry out data processing, feed back to each control device in safety test cabin, thereby realizing whole fire explosion safety test process;
Humiture control module, it,, for gathering the temperature and humidity signal in safety test cabin, carries out stepless control to the valve of temperature and humidity in Control experiment cabin, makes the temperature and humidity in safety test cabin reach testing requirements;
Cabin body automatic control module, it is a sequence logical control works fine module, can, according to the requirement of different step, as the switch of hatch door, the charged rear interlock protection of cabin body, control or adopt automatic linkage control to the individual equipment in safety test cabin;
Fire-fighting control module, it controls fire temperature sensor, transfer signals to PLC analog input module, PLC is after computing, adopt corresponding logic to judge in cabin whether breaking out of fire, and whether starting fire-fighting device device, fire-fighting control module also can be switched to manual control, whether starts fire fighting extinguisher by artificial judgment;
Gas displacement discharge and discharging of waste liquid control module, in the time that needs carry out gas displacement, by the control to exhaust regulating valve, can be opened exhaust regulating valve slowly, to control and to alleviate the pressure in the body of cabin; In the time that cabin body internal pressure drops to certain degree, the aperture of controlled superzapping contracting air inlet variable valve, thus realize the adjusting of air feed speed; Also can realize discharge waste liquid by controlling corresponding discharging of waste liquid valve to discharging of waste liquid;
Synergic system control module, it controls water supply, power supply, air feed and steam process pipe and valve arrangement, and its parameter is sent to the load module of PLC by sensor, and PLC can control them respectively according to the requirement of technique.
3. chain logic control system as claimed in claim 1 or 2, is characterized in that: described chain logic control system is only by above-mentioned module composition.
4. test the method for chemical fire explosion safety test for one kind, it is characterized in that: chemicals to be detected is positioned in the cabin body of chemical fire explosion safety test cabin system that is provided with described chain logic control system described in claims 1 to 3, close hatch door, carry out the control of process of the test by external data line, when off-test, waste liquid, waste gas, waste residue that process of the test is produced focus on, and reduce environmental pollution.
5. the application of the chain logic control system described in claims 1 to 3 in test chemical fire explosion safety process of the test.
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