CN102553119A - Device for testing concentration of gas extinguishing agent and testing method thereof - Google Patents
Device for testing concentration of gas extinguishing agent and testing method thereof Download PDFInfo
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- CN102553119A CN102553119A CN2011104369986A CN201110436998A CN102553119A CN 102553119 A CN102553119 A CN 102553119A CN 2011104369986 A CN2011104369986 A CN 2011104369986A CN 201110436998 A CN201110436998 A CN 201110436998A CN 102553119 A CN102553119 A CN 102553119A
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Abstract
The invention discloses a device for testing concentration of a gas extinguishing agent and a testing method of the device. The invention is characterized in that a gas filter, a heating and temperature control module, a flow control module, a concentration test module, a data processing module and a serial port communication module are assembled in a case body; a gas inlet is formed at the front end of the case body and a vacuum pump is connected to the rear end of the case body; the communication with a computer is achieved through a serial port; and the gas extinguishing agent concentration data is transferred to the computer after data processing. The gaseous mixture of air and gas extinguishing agent is pumped into the testing device through the vacuum pump, treated by the gas filter to remove foreign substances and heated to a preset temperature by a gas heater and then flows into the concentration test module; after the concentration data is obtained based on the thermal film sensing principle, the gaseous mixture is discharged through the outlet of the vacuum pump; the concentration data is processed by the data processing module to obtain concentration values of the gas extinguishing agent; and the concentration curve of the gas extinguishing agent is recorded by the computer. The device and method can be widely applied to test concentrations of different types of gas extinguishing agents and provide a support for evaluating fire extinguishment performance of gas extinguishing systems.
Description
Technical field
The invention belongs to the aircraft fire protection technical field, particularly relate to the gas extinguishing agent concentration determination device and the method for testing thereof in aircraft fire protection field.
Background technology
Test request in the aircraft fire protection field to agent concentration is very high, still adopts traditional differential pressure measurement method seventies at present abroad, and China still is being in blank aspect the testing arrangement of aircraft extinction using gas agent concentration and the method.Traditional differential pressure measurement method; Utilize vavuum pump to be drawn into the mixture of air extinguishing chemical in the agent concentration testing arrangement; The mixture of air extinguishing chemical produces certain pressure reduction through cellular current limliting plug; Adopt differential pressure pick-up to measure pressure reduction, and adopt the oscillograph recording pressure difference data, calculate the agent concentration data.There is following defective in traditional differential pressure measurement method:
Though 1. device is fairly simple, inconvenient operation;
2. cellular current limliting plug easy blocking;
3. adopt oscillograph to carry out reading, and calculate just and can obtain the agent concentration data, the lacks computer data processing means.
Summary of the invention
The objective of the invention is to: for overcoming the predicament that China is faced in aircraft gas extinguishing agent concentration determination field; The present invention provides a kind of gas extinguishing agent concentration determination device and method of testing thereof; It is easy and simple to handle, and flow-control is accurate, and is directly outputed test result by computer.
The technical scheme that the present invention adopts in order to achieve the above object is: a kind of gas extinguishing agent concentration determination device; This device comprises: air inlet, pneumatic filter, heating temperature control module; Gas extinguishing agent concentration determination module, flow controller, data processing module; Serial communication module, computer and vavuum pump; Form interconnective integral body by being placed on pneumatic filter, heating temperature control module, gas extinguishing agent concentration determination module, flow controller, data processing module and a serial communication module in the cabinet, link to each other with computer through serial ports, and connect vavuum pump in the cabinet rear end; After the mist of air extinguishing chemical to be measured filters out the impurity of existence through pneumatic filter; Get into the gas heating clamber,, fully gasify and mix with even air to guarantee gas extinguishing agent by the heating-up temperature heating of setting; The mist total flow that flows through in the flow controller control system; And flow value is transferred to computer, and convert gas extinguishing agent concentration value with the concentration dependent signal of gas extinguishing agent via data processing module by gas extinguishing agent concentration determination module is detected, be transferred to computer through the serial communication module; And being recorded as the concentration determination curve, mist is discharged test macro through vavuum pump; In the gas extinguishing agent concentration determination module; Add throttle orifice and bypass line; The hotting mask sensing module is placed in the bypass line, only allows the flow through temperature-sensing diaphragm surface of hotting mask sensing module of the gas of trace, and computer is through the inner heating-up temperature of heating temperature control module display unit; Wherein:
The mechanical part of device links together through gas piping, and the gas flow process is followed successively by: got into by air inlet, filter through pneumatic filter; In the gas heating clamber, heat; After the throttle orifice throttling, a part of tested gas gets into bypass line, tested gas detects agent concentration information in by-pass line after; Again with main line on gas converge, discharge system through flow-control module and vavuum pump;
The circuit part of device should satisfy respectively: power supply satisfies the instructions for use at each position; Guarantee to flow into the temperature that the mist of measuring pipeline reaches testing requirement; The extinction using gas agent concentration is detected and exports test signal; Making that the total flow flow through device is constant handles temperature information, concentration information and flow information on preset numerical value, realizes the communication with computer.
A kind of gas extinguishing agent concentration determination method; This method filters out impurity with air to be measured and extinction using gas agent composition through pneumatic filter; The heating temperature control module is heated to steady temperature with gas to be measured; Through the flow of the tested gas of the constant control of flow-control module, obtain gas concentration information and export data signal through gas extinguishing agent concentration determination module, by the serial communication module signal is transferred to computer; Computer is handled data signal by the data processing method of setting, and finally exports the concentration determination result; Gas extinguishing agent concentration determination principle is the hotting mask sensing principle, and it forces constant micro-air-flow to get into bypass line through in main line, adding throttle orifice; When flowing through the temperature-sensing diaphragm surface of installing in the bypass line, between air-flow and the temperature-sensing diaphragm exchange heat taking place, causes the temperature-sensing diaphragm resistance change; The corresponding signal of telecommunication also changes thereupon in the circuit; Export the signal of telecommunication of this variation, can obtain and the concentration dependent information of gas extinguishing agent, because this information is only relevant with the concentration of the flow of tested gas and gas extinguishing agent; Under the constant condition of air flow rate in the device, then relevant with the concentration of gas extinguishing agent; Its physical principle is: the heat Q of exchange is relevant with the specific heat capacity C and the mass M of gas, and M is when immobilizing, and to the mist that kind is confirmed, specific heat capacity is by the concentration decision of mist, so the information that is obtained is the concentration information of gas extinguishing agent.
The present invention's advantage compared with prior art is:
1, the present invention's calculation procedure that gas extinguishing agent concentration determination data are handled; Be built in the data processing module; During test, the automatic read test data of testing arrangement are handled through program automatically; Just can externally export the test result of extinction using gas agent concentration, and write down its curve on computers.
2, the present invention guarantees that through pneumatic filter the tested mist that flows into testing arrangement does not contain impurity such as dust; Utilize the heating temperature control module to heat mist to be measured, it is mixed, guarantee the accuracy of test; Make the gas concentration test become possibility through the control flow system flow; Adopt hotting mask sensing principle test gas agent concentration, test quick and precisely; Using a computer outputs test result, and the result is easily understood.
3, the present invention can be widely used in the test of all kinds of extinction using gas agent concentrations; It is applied the production that promotes gas extinguishing agent concentration determination equipment; For the fire extinguishing effectiveness of verifying gas extinguishing system provides means of testing, the development technological for China's aircraft fire protection provides technical support.
Description of drawings
Fig. 1 is this gas extinguishing agent concentration determination apparatus structure sketch map.
Fig. 2 is heating temperature control and concentration determination modular structure sketch map.
Fig. 3 is the circuit system theory diagram.
Fig. 4 is flow chart of data processing figure.
Among the figure: 1. air inlet, 2. pneumatic filter, 3. heating temperature control module, 4. gas extinguishing agent concentration determination module; 5. flow controller, 6. data processing module, 7. serial communication module, 8. computer; 9. vavuum pump, 10. gas heating clamber, 11. hygrosensors, 12. heaters; 13. temperature-adjusting circuit, 14. throttle orifices, 15. bypass lines, 16. hotting mask sensing modules.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment explanation the present invention.
The overall structure of device is as shown in Figure 1; Device comprises: air inlet 1, pneumatic filter 2, heating temperature control module 3; Gas extinguishing agent concentration determination module 4, flow controller 5, data processing module 6; Serial communication module 7, computer 8 and vavuum pump 9, mechanical part links together through gas piping, and circuit design is that each electric position power supply and realization information are transmitted.Pneumatic filter 2, heating temperature control module 3, gas extinguishing agent concentration determination module 4, flow controller 5, data processing module 6, serial communication module 7 are assembled in the cabinet; Connect vavuum pump 9 in the rear end through pipeline, 7 places are provided with computer interface in the serial communication module.Through the heating requirements of heating temperature control module 3 implement devices, accomplish concentration determination by gas extinguishing agent concentration determination module 4, flow controller 5 is realized the flow-control requirement, data processing module 6 and the communication of serial communication module 7 realizations with computer 8; The data processing method of data through presetting, the signal of telecommunication with 4 outputs of gas extinguishing agent concentration determination module converts the gas extinguishing agent concentration value into and exports as test result.
The test module that gas extinguishing agent concentration determination module 4 adopts based on the hotting mask sensing principle in the present embodiment, the concrete structure of heating temperature control module 3 and gas agent concentration test module 4 is as shown in Figure 2.Heating temperature control module 3 comprises gas heating clamber 10, hygrosensor 11, heater 12 and temperature-adjusting circuit 13; Detect the mist temperature that will get into concentration determination module 4 by hygrosensor 11, according to hygrosensor 11 detected temperature signals, whether judgement and control temperature-adjusting circuit 13 move with heater 12 temperature signal through data processing module 6.Gas extinguishing agent concentration determination module 4 is made up of throttle orifice 14, bypass line 15 and hotting mask sensing module 16; Because the effect of throttle orifice 14; Make micro-mist flow into bypass line 15 automatically, hotting mask sensing module 16 obtains the gas extinguishing agent concentration information, and it is transferred to data processing module 6; Link to each other with computer 8 through serial communication module 7 again, handle and output test result.
The schematic block circuit diagram of device is as shown in Figure 3, and power supply output is supplying temperature detector, temperature control circuit, heater, flow controller and the required burning voltage of hotting mask sensing module respectively; Hygrosensor detects gas temperature signal and converts data signal to and export to data processing module, judges whether and need heat to gas, and instruction is sent to heater; The external output flow data signal of flow controller arrives data processing module, and controls the aperture of flow controller by data processing module; The detected signal of hotting mask sensing module converts data signal into; Export to data processing module; Data processing module is judging that temperature and flow all reach under the prerequisite of setting numerical value (80 ℃ of temperature, flow 2L/min), handle this signal; And export to computer, computer recording gas extinguishing agent concentration determination curve.
Flow chart of data processing is as shown in Figure 4, and data processing module (MCU) will be realized four functions, first; The flow signal of reading flow amount controller 5 outputs; And judge that whether flow is the 2L/min that is provided with, and if not 2L/min, then regulates the aperture of flow controller automatically; If 2L/min then proceeds temperature and judges; Second; Read hygrosensor 11 detected temperature informations; Judge the relation between 80 ℃ of itself and the design temperatures, if temperature is lower than 80 ℃ then drive the heater action and reach till 80 ℃ up to detected temperature, if temperature reaches 80 ℃ then carry out the 3rd function; The 3rd, the signal of telecommunication of hotting mask sensing module output is handled, calculate the extinction using gas agent concentration; The 4th, output test result to computer.Computer through the program that presets, is recorded as gas extinguishing agent concentration determination curve with the signal that reads.
Testing arrangement when work,, start vavuum pump 9 by setting flow with in itself and the Air mixing gas suction device to the gas extinguishing agent of kind; Through the total gas flow rate that flows through in flow controller 5 setting devices is 2L/min; Mist filters through pneumatic filter 2 earlier, gets into gas heating clamber 10 by gas pipeline, and hygrosensor 11 is transferred to data processing module 6 with detected temperature signal; Data processing module 6 is by 80 ℃ of the temperature controlled conditions that pre-sets; Mist in the heating clamber is carried out temperature control, all reach under the prerequisite that imposes a condition the signal that gas extinguishing agent concentration determination module 4 is tested in temperature and flow; Carry out data by data processing module 6; Obtain the concentration value of the gas extinguishing agent that will measure, and this value outputed to computer, show the curve of gas extinguishing agent concentration changes with time in the user interface of computer.
The part that the present invention does not set forth in detail belongs to techniques well known.
Claims (2)
1. gas extinguishing agent concentration determination device; This device comprises: air inlet (1), pneumatic filter (2), heating temperature control module (3); Gas extinguishing agent concentration determination module (4), flow controller (5), data processing module (6); Serial communication module (7), computer (8) and vavuum pump (9); It is characterized in that: form interconnective integral body by being placed on pneumatic filter (2), heating temperature control module (3), gas extinguishing agent concentration determination module (4), flow controller (5), data processing module (6) and a serial communication module (7) in the cabinet, link to each other with computer (8) through serial ports, and connect vavuum pump (9) in the cabinet rear end; After the mist of air extinguishing chemical to be measured filters out the impurity of existence through pneumatic filter; Get into gas heating clamber (10); By the heating-up temperature heating of setting; Guaranteeing that gas extinguishing agent fully gasifies and mixes with even air, the mist total flow that flows through in flow controller (5) the control system, and flow value is transferred to computer (8); Convert gas extinguishing agent concentration value with the concentration dependent signal of gas extinguishing agent via data processing module (6) by gas extinguishing agent concentration determination module (4) is detected; Be transferred to computer (8) through serial communication module (7), and be recorded as the concentration determination curve, mist is discharged test macro through vavuum pump (9); In the gas extinguishing agent concentration determination module (4); Add throttle orifice (14) and bypass line (15); Testing element is placed in the bypass line (15), only allows the gas of the trace testing element surface of flowing through, and computer (8) is through the inner heating-up temperature of heating temperature control module (3) display unit; Wherein:
The mechanical part of device links together through gas piping, and the gas flow process is followed successively by: got into by air inlet (1), filter through pneumatic filter (2); Heating in gas heating clamber (10); After throttle orifice (14) throttling, a part of tested gas gets into bypass line (15), tested gas detects agent concentration information in by-pass line after; Again with main line on gas converge, through flow controller (5) and vavuum pump (9) discharge system;
The circuit part of device should satisfy respectively: power supply satisfies the instructions for use at each position; The mist of guaranteeing to flow into bypass line (15) reaches the temperature of testing requirement; The extinction using gas agent concentration is detected and exports test signal; Making that the total flow flow through device is constant handles temperature information, concentration information and flow information on preset numerical value, realizes the communication with computer (8).
2. gas extinguishing agent concentration determination method; It is characterized in that: air to be measured and extinction using gas agent composition filter out impurity through pneumatic filter (2); Heating temperature control module (3) is heated to steady temperature with gas to be measured; Through the flow of the tested gas of the constant control of flow controller (5), obtain gas concentration information and export data signal through gas extinguishing agent concentration determination module (4), by serial communication module (7) signal is transferred to computer (8); Computer is handled data signal by the data processing method of setting, and finally exports the concentration determination result; The principle of gas extinguishing agent concentration determination is the hotting mask sensing principle; It forces constant micro-air-flow to get into bypass line (15), during the hotting mask sensing module of installing in the bypass line of flowing through (16) through in main line, adding throttle orifice (14); Exchange heat takes place between the temperature-sensing diaphragm in air-flow and the hotting mask sensing module (16); Cause the temperature-sensing diaphragm resistance change, the corresponding signal of telecommunication also changes thereupon in the circuit, exports the signal of telecommunication of this variation; Can obtain and the concentration dependent information of gas extinguishing agent; Because it is this information is only relevant with the concentration of the flow of tested gas and gas extinguishing agent, under the constant condition of air flow rate in the device, then relevant with the concentration of gas extinguishing agent; Its physical principle is: the heat Q of exchange is relevant with the specific heat capacity C and the mass M of gas, and M is when immobilizing, and to the mist that kind is confirmed, specific heat capacity is by the concentration decision of mist, so the information that is obtained is the concentration information of gas extinguishing agent.
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| CN201110436998.6A CN102553119B (en) | 2011-12-22 | 2011-12-22 | Device for testing concentration of gas extinguishing agent and testing method thereof |
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| CN201110436998.6A CN102553119B (en) | 2011-12-22 | 2011-12-22 | Device for testing concentration of gas extinguishing agent and testing method thereof |
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| CN102553119B CN102553119B (en) | 2014-01-29 |
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Cited By (8)
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| CN103163046A (en) * | 2013-03-06 | 2013-06-19 | 中国科学技术大学 | Gaseous extinguishing agent concentration measure apparatus |
| CN103638620A (en) * | 2013-12-04 | 2014-03-19 | 中国科学技术大学 | Performance testing equipment for moisture filtering regulator of aircraft fire extinguishing system |
| CN104897602A (en) * | 2015-06-23 | 2015-09-09 | 中国航空工业集团公司西安飞机设计研究所 | Extinguishant concentration measuring sensor signal demodulation circuit |
| CN109540747A (en) * | 2018-11-12 | 2019-03-29 | 中国飞行试验研究院 | A kind of aircraft power plant cabin agent concentration airborne measurement device |
| CN109541169A (en) * | 2018-12-04 | 2019-03-29 | 重庆顺安爆破器材有限公司 | For water-based explosive production line automatic measurement & calculation concentration device and its measuring method |
| CN110146644A (en) * | 2019-06-14 | 2019-08-20 | 应急管理部天津消防研究所 | It is a kind of for testing the device and method of liquid extinguisher vaporized gas extinguishing property |
| CN110844118A (en) * | 2019-11-20 | 2020-02-28 | 中国民用航空总局第二研究所 | Porous structure differential pressure test device and test method |
| RU2788246C1 (en) * | 2022-02-08 | 2023-01-17 | Андрей Олегович Минаев | Gas fire extinguishing module (options) |
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| CN110146644A (en) * | 2019-06-14 | 2019-08-20 | 应急管理部天津消防研究所 | It is a kind of for testing the device and method of liquid extinguisher vaporized gas extinguishing property |
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| RU2788246C1 (en) * | 2022-02-08 | 2023-01-17 | Андрей Олегович Минаев | Gas fire extinguishing module (options) |
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