CN112316350B - Water-based verification system platform applied to fire suppression of large civil aircraft cargo hold - Google Patents
Water-based verification system platform applied to fire suppression of large civil aircraft cargo hold Download PDFInfo
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Abstract
The invention discloses a water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold, which comprises a standard experiment cabin, a fine water mist generating device and a control module, wherein the fine water mist generating device is positioned in the standard experiment cabin and comprises a water supply adjusting module, a water supply pipeline, a gas supply pipeline, a plurality of water vapor metering modules and a plurality of fine water mist nozzles, and the control module is in signal connection with the water supply adjusting module and the plurality of water vapor metering modules; the water and gas metering modules are arranged in one-to-one correspondence with the water mist nozzles and used for metering and controlling the water amount and the gas amount entering the water mist nozzles. According to the invention, the control module controls the opening of various valve positions of the water mist generating device, so that the required water mist state can be obtained, the experimental parameters and variables are more accurate, and the internal environment of the aircraft cargo compartment and the accurate fire suppression of the civil aircraft cargo compartment are accurately simulated.
Description
Technical Field
The invention relates to the technical field of airplane fire prevention and extinguishing tests, in particular to a water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold.
Background
The aviation industry generally considers the Halon-board fire extinguishing system to be the most effective fire extinguishing system in an aircraft cabin, but as Halon fire extinguishing agents consume ozone substances in the atmosphere, the International environmental protection organization requires that a clean fire extinguisher for the civil aviation comprises an on-board fire extinguisher, so that the research on replacing the fire extinguishing technology by the Halon-board fire extinguisher is carried out, and the water mist is the ideal choice for replacing the Halon-board fire extinguisher in the civil aircraft cargo cabin through a large amount of research works carried out by Europe, America and other countries. Four Minimum Performance Standards (MPS) and experimental verification methods for airborne halon replacement were successively established by FAA in the united states. The new fire extinguishing system for the aircraft cargo compartment needs to meet four different fire test scenes: large scale solid fires, container solid fires, surface fuel pool fires and gas bottle explosions. At least 5 times of experiments are carried out on each fire scene in a FAA standard aircraft cargo hold of 2000ft3(8.11m multiplied by 4.16m multiplied by 1.67m), after data acquisition and analysis, the fire extinguishing performance of the novel fire extinguishing agent is compared with the general standard, and whether the fire extinguishing agent passes the test or not is determined. After the FAA has specifically established MPS standards, the developed water mist fire suppression system must pass the FAA standards and be verified in a near real environment.
The existing civil aircraft cargo hold water mist fire extinguishing experimental platform cannot meet the control requirements of water mist under various fire prevention test scene experiments. The water mist fire extinguishing platform can achieve a series of experimental researches for suppressing and extinguishing the water mist of the cargo hold of the civil aircraft under the condition of high efficiency and high precision, and the experimental requirement precision is low due to the fact that the cargo hold environment changes violently and the water mist control platform is low in building precision. In order to meet the scientificity and accuracy of experimental research, a water-based verification system platform capable of simulating the internal environment of an aircraft cargo hold and accurately suppressing and extinguishing the fire of the civil aircraft cargo hold needs to be designed.
Disclosure of Invention
The invention aims to solve the technical problem that the existing civil aircraft cargo hold water mist fire extinguishing experimental platform cannot meet the control requirements of water mist under various fire prevention test scene experiments, and aims to provide a water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold, so that the problems that the internal environment of an aircraft cargo hold is accurately simulated, the fire suppression of the civil aircraft cargo hold is accurate, and the civil aircraft cargo hold water mist fire extinguishing experimental platform meets the control requirements of water mist under various fire prevention test scene experiments are solved.
The invention is realized by the following technical scheme:
a water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold comprises a standard experiment cabin, a fine water mist generating device and a control module, wherein the fine water mist generating device is positioned in the standard experiment cabin; the water mist generating device comprises a water supply adjusting module, a water supply pipeline, a gas supply pipeline, a plurality of water vapor metering modules and a plurality of water mist spray heads, wherein the water supply adjusting module, the water supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads are sequentially connected, and the gas supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads are sequentially connected; the control module is in signal connection with the water supply adjusting module and the plurality of water and gas metering modules; the water and gas metering modules are arranged in one-to-one correspondence with the water mist nozzles and used for metering and controlling the water quantity and the gas quantity entering the water mist nozzles.
According to the invention, the control module is used for controlling the water mist generating device, so that the mist quantity state sprayed by the water mist spray heads is controlled, the parameters such as flow, pressure and the like during the operation of the water mist are accurately controlled, the test working condition is more in accordance with the MPS standard, the opening and closing of any combination of a plurality of water mist spray heads can be realized under the same variable, and the experimental research on the fire suppression and extinguishment of the water mist is carried out. The water mist of the invention belongs to low-pressure double-fluid water mist, one end of which is fed with air and the other end is fed with water, and the effect of the water mist is achieved after the water mist acts in a water mist spray head. The invention comprises a standard experiment chamber and a water mist generating device module, wherein the standard experiment chamber ensures the environment required by the experiment, can simulate the internal environment of the cargo hold of an airplane and can carry out various fire, explosion and fire extinguishing experimental researches under the condition of meeting the MPS standard.
Further, the water supply adjusting module is connected with an external water supply source or a water tank, and the air supply pipeline is connected with an air supply source of the air compressor.
Further, the control module comprises an input for obtaining parameters for the experiment.
Further, the standard experiment chamber is designed according to the standards of MPS established in the united states.
Furthermore, the standard experiment cabin is made of domestic high-quality carbon steel.
Further, the standard experiment cabin comprises a plurality of sections of cabin shells, the plurality of sections of cabin shells are detachably assembled together, the cabin shells are provided with cabin doors, high-strength observation windows and detection installation interfaces, the high-strength observation windows are made of fireproof glass, and a water outlet is formed in the bottom of the standard experiment cabin.
Further, the water and gas metering module comprises a water supply electromagnetic valve, a water flow meter and a pressure sensor, wherein the water supply electromagnetic valve, the water flow meter and the pressure sensor are sequentially connected between the water supply pipeline and the water mist spray head; the aqueous vapor metering module includes air feed solenoid valve, electrical control valve, digital automatically controlled relief pressure valve and gas flowmeter, air feed solenoid valve, electrical control valve, digital automatically controlled relief pressure valve and gas flowmeter connect gradually in the air feed line with between the water mist shower nozzle.
Furthermore, the water supply pipeline and the air supply management both adopt toughened hoses.
Furthermore, a plurality of instrument interfaces are arranged in the standard experiment cabin and used for being connected with a plurality of testing instruments.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the control module controls the opening of various valve positions of the water mist generating device, so that the required water mist state can be obtained, the experimental parameters and variables are more accurate, and the internal environment of the aircraft cargo compartment and the accurate fire suppression of the civil aircraft cargo compartment are accurately simulated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a structural frame diagram of the present invention;
FIG. 2 is a block diagram of an embodiment;
FIG. 3 is a detailed diagram of the structure of the embodiment.
Reference numbers and corresponding part names in the drawings:
1-water mist spray head, 2-water supply electromagnetic valve, 3-water flow meter, 4-pressure sensor, 5-gas flow meter, 6-digital electric control pressure reducing valve, 7-electric regulating valve, 8-gas supply electromagnetic valve, 9-variable frequency water pump, 10-precision filter, 11-external pressure water supply source and 12-air compressor air supply source.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment 1 is a water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold, and the water-based verification system platform comprises a standard experiment chamber, a fine water mist generating device and a control module, wherein the fine water mist generating device is positioned in the standard experiment chamber; the water mist generating device comprises a water supply adjusting module, a water supply pipeline, a gas supply pipeline, a plurality of water vapor metering modules and a plurality of water mist spray heads 1, wherein the water supply adjusting module, the water supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads 1 are sequentially connected, and the gas supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads 1 are sequentially connected; the control module is in signal connection with the water supply adjusting module and the water and gas metering modules; the water and gas metering modules are arranged in one-to-one correspondence with the water mist nozzles 1 and are used for metering and controlling the water amount and the gas amount entering the water mist nozzles 1. As shown in fig. 1 and 2.
The water supply adjusting module is connected with an external water supply source or a water tank, and the air supply pipeline is connected with an air supply source 12 of the air compressor. The control module comprises an input end, and the input end is used for acquiring parameters for experiments. The standard experimental chamber is designed according to the standards of MPS established in the united states. The standard experiment cabin is made of domestic high-quality carbon steel. The standard experiment cabin comprises a plurality of sections of cabin shells, the plurality of sections of cabin shells are detachably assembled together, a cabin door, a high-strength observation window and a detection installation interface are arranged on the cabin shells, the high-strength observation window is made of fireproof glass, and a water outlet is formed in the bottom of the standard experiment cabin. The water and gas metering module comprises a water supply electromagnetic valve 2, a water flow meter 3 and a pressure sensor 4, wherein the water supply electromagnetic valve 2, the water flow meter 3 and the pressure sensor 4 are sequentially connected between a water supply pipeline and the water mist spray head 1; the water-gas metering module comprises a gas supply electromagnetic valve 8, an electric regulating valve 7, a digital electric control pressure reducing valve 6 and a gas flowmeter 5, wherein the gas supply electromagnetic valve 8, the electric regulating valve 7, the digital electric control pressure reducing valve 6 and the gas flowmeter 5 are sequentially connected between a gas supply pipeline and the water mist spray head 1. As shown in fig. 3. The water supply pipeline and the air borrowing management both adopt toughened hoses. And a plurality of instrument interfaces are arranged in the standard experiment cabin and used for accessing a plurality of test instruments. The control module adopts a PLC variable frequency controller. The water supply adjusting module is connected with an external water supply source or a water tank, and the air supply pipeline is connected with an air supply source 12 of the air compressor. The control module comprises an input end, and the input end is used for acquiring parameters for experiments. The standard experimental chamber is designed according to the standards of MPS established in the united states. The standard experiment cabin is made of domestic high-quality carbon steel. The standard experiment cabin comprises a plurality of sections of cabin shells, the plurality of sections of cabin shells are detachably assembled together, a cabin door, a high-strength observation window and a detection installation interface are arranged on the cabin shells, the high-strength observation window is made of fireproof glass, and a water outlet is formed in the bottom of the standard experiment cabin. The water and gas metering module comprises a water supply electromagnetic valve 2, a water flow meter 3 and a pressure sensor 4, wherein the water supply electromagnetic valve 2, the water flow meter 3 and the pressure sensor 4 are sequentially connected between a water supply pipeline and the water mist spray head 1; the water-gas metering module comprises a gas supply electromagnetic valve 8, an electric regulating valve 7, a digital electric control pressure reducing valve 6 and a gas flowmeter 5, wherein the gas supply electromagnetic valve 8, the electric regulating valve 7, the digital electric control pressure reducing valve 6 and the gas flowmeter 5 are sequentially connected between a gas supply pipeline and the water mist spray head 1. The water supply pipeline and the air borrowing management both adopt toughened hoses. And a plurality of instrument interfaces are arranged in the standard experiment cabin and used for accessing a plurality of test instruments. The control module adopts a PLC variable frequency controller.
This embodiment 1 controls water mist generating device through control module to control water mist shower nozzle spun fog volume state, realized the flow of accurate control water mist during operation, pressure isoparametric, make experimental operating mode laminate the MPS standard more, can realize opening and closing of a plurality of water mist shower nozzles arbitrary combination under equal variable, carry out the experimental study to water mist suppression fire extinguishing. The water mist of the embodiment 1 belongs to low-pressure double-fluid water mist, one end of the water mist enters air, the other end of the water mist enters water, and the effect of the water mist is achieved after the water mist acts in a water mist spray head. This embodiment 1 has included standard experiment cabin and water mist generating device module, and the environment that the standard experiment cabin made the experiment requirement obtains guaranteeing, can simulate aircraft cargo hold internal environment, carries out multiple type conflagration, explosion and the experimental study of putting out a fire under the standard that satisfies MPS.
Example 2
The embodiment 2 is based on the embodiment 1, and the water-based verification system platform applied to fire suppression of the cargo compartment of the large civil aircraft meets the four minimum performance standards (MPS for short) for airborne halon replacement formulated by the FAA in the united states, simulates the internal environment of the cargo compartment of the aircraft, provides an accurate water mist fire extinguishing experimental platform, and is helpful for developing various experimental researches for water mist fire suppression and extinguishment.
The integrated standard experiment chamber and the water mist generating device are integrated, wherein the standard experiment chamber is designed according to the MPS standard established in the United states, and the size of the standard experiment chamber is 8.11m multiplied by 4.16m multiplied by 1.67 m; thin water smoke generating device passes through control module, adopts a key formula control, possess eight thin water smoke shower nozzles evenly distributed in standard experiment cabin, has realized flow, pressure isoparametric of accurate control thin water smoke during operation for experimental operating mode laminates the MPS standard more, can realize opening and closing of eight arbitrary combinations of shower nozzle under equal variable, carries out the experimental study to thin water smoke suppression fire extinguishing.
The standard experiment cabin is a multifunctional full-size simulation test device, is used for simulating the environment inside the cargo hold of an airplane, and can be used for carrying out various types of experimental researches on fire disasters, explosions, extinguishment and the like in the cabin. The device can simulate and develop airworthiness standard experiments such as bulk cargo fire, cargo box cargo fire, combustible liquid fire and the like in cargo compartments under different height conditions, and can measure temperature distribution, thermal radiation, smoke density, gas components, parameters and the like in the fire experiment process in real time. The reference cabin fire is a standard test, and the following are mainly made: the test method comprises an in-cabin carton burning test, an in-cabin small container (containing carton) burning test, an oil basin burning test and a subsequent test of relative fire extinguishing equipment. The whole experiment chamber is made of domestic high-quality carbon steel (Q235), and the chamber body comprises three sections of separately assembled chamber shells, a chamber door, a high-strength observation window and a detection installation interface. Wherein the size of the inner cavity of the cabin body is as follows: 8110mm (L) x 4160mm (W) x 1670mm (H), and the inner cavity volume is 56.6 + -2.8 m3(ii) a The position of the cabin door is positioned at the front end of the cabin body, and the size of the door opening is 1500mm (w) multiplied by 1500mm (H); the observation windows are made of fire-proof glass, the number of the observation windows is 4, and the cabin body is provided with a positive door part1, 1 above the cabin body, 2 on the left (right) side respectively, the specification size is circular phi 300mm, and the experimental condition in the cabin can be observed in real time.
The water mist generating device module consists of a water mist supply adjusting module, eight nozzle water vapor metering modules (total eight), a water supply pipeline, a gas supply pipeline and a water mist nozzle. The water supply adjusting module is an improvement on traditional water supply, a one-key control mode of a computer end is added, a numerical value of a water supply adjusting valve and a numerical value of a water return adjusting valve (0-100%) are input from a computer interface end of a control cabinet, the numerical value of the water supply valve is generally 100% and represents full opening, and the numerical value of the water return adjusting valve determines a water supply flow parameter (0-5 lpm) at the moment; in addition, the set value (0-1 Mpa) of the air pressure reducing valve is input, so that the air flow (0-950 lpm) parameter can be controlled; the water-gas metering module is provided with eight groups, mainly comprises a metering module bracket, a regulating valve, an electromagnetic valve, a pipeline, an electric air pressure reducing valve group, a temperature-pressure compensation type vortex shedding flowmeter, a gear flowmeter, a terminal box and the like, is combined with eight water mist spray heads for use, and is evenly distributed in a standard experiment cabin, and the water-gas metering module aims at accurately recording and controlling the air intake and the water intake amount of the water mist, the water mist of the embodiment 2 belongs to low-pressure double-fluid water mist, and has the effects of one-end air intake and the other-end water intake after acting in the spray heads, as shown in figure 3; the structure that water supply pipe used the tempering hose, contrast traditional plastic hose, the tempering hose can reach high temperature resistance purpose, meanwhile also can satisfy quick detachable and easy advantage of adjusting.
This example 2 uses a standard test chamber and a water mist generating device. The standard experiment chamber made of domestic high-quality carbon steel (Q235) ensures the environment required by the experiment, can simulate the internal environment of the aircraft cargo chamber, and can be used for carrying out various fire, explosion and fire extinguishing experimental researches under the condition of meeting the MPS standard, and the currently designed experiments comprise four kinds of intra-chamber carton combustion experiments, intra-chamber small container (including carton) combustion experiments and oil pan combustion experiments; the water mist generating device consists of a more accurate water supply adjusting module, a water vapor metering module, a spray head, a water supply pipeline and a gas supply pipeline, wherein the water supply adjusting module of the water mist spray head controls the water vapor metering module of the water mist spray head, the water mist generating device consists of a PLC (programmable logic controller) of a testing unit, the numerical value (0-100%) of a water supply adjusting valve can be input into a water mist control cabinet and generally set to be 100%, the parameter input into a backwater adjusting valve (0-100%) provides water supply flow within the range of 0-5 lpm, and the numerical value (0-1 Mpa) of a pressure reducing valve is input to provide air flow within the range of 0-950 lpm; secondly, an air supply and water supply switch button is opened at the interface end of a computer, air input by an air compressor enters a fine water mist nozzle through an air supply pipeline, water flow in the water tank enters the fine water mist nozzle through a water supply pipeline, the air and liquid interact in the fine water mist nozzle to form low-pressure double-fluid fine water mist, parameters such as air flow, air pressure, water supply pressure and the like at the moment can be obtained through an air flow meter and a liquid flow meter, the fine water mist effect of any air-liquid ratio within the range of 0-950 lpm of air flow and 0-5 lpm of liquid flow can be accurately, quickly and effectively provided, the aim of controlling eight nozzles in real time to carry out a fine water mist fire extinguishing experiment can be achieved at most, and the scientificity and the accuracy of the experiment are improved; in addition, a plurality of measuring instrument interfaces are reserved in the standard experiment chamber, so that arrangement and measurement of related experiments are facilitated, and experiment phenomena can be observed through the observation port.
In the embodiment 2, the gas flow and the liquid flow can be rapidly and accurately conveyed to the spray head according to the designated use amount, the best fire suppression effect on the cargo compartment of the civil aircraft and the characteristics of the water mist field in different ranges (the air flow is 0-950 lpm and the liquid flow is 0-5 lpm) can be realized, and the functions are comprehensive. The Standard experiment cabin is completely designed according to four Minimum Performance standards (MPS for short) about airborne Halon replacement formulated by FAA in the United states, and has theoretical reliability; a PLC frequency conversion controller is designed at the fine water mist water supply adjusting module to control the mutual operation of all valve positions, so that the parameters of the fine water mist fire extinguishing experiment have stability and accuracy, and the low-pressure double-fluid fine water mist effect of any gas-liquid ratio in the range of air flow of 0-950 lpm and gas flow of 0-5 lpm can be accurately achieved; the standard experiment cabin adopts the high-quality carbon steel (Q235) material of domestic product, and water supply pipeline all adopts the tempering hose material with the gas supply line, and is all high temperature resistant, guarantees the security that experimental operating mode changed, and simultaneously, the experiment under-deck also is equipped with the outlet, and there is ponding phenomenon bottom the under-deck when preventing thin water smoke experiment of putting out a fire. The control module controls the opening of various valve positions, the required water mist state can be obtained, and the control module is added at the water and gas metering module of the spray head, so that the parameters and variables are more accurate.
Under the condition of not starting water mist, a standard experiment chamber is independently utilized to carry out related fire experiments, the size of the inner cavity of the experiment chamber body is 8110mm (L) multiplied by 4160mm (W) multiplied by 1670mm (H), and the volume of the inner cavity is 56.6 +/-2.8 m3The airworthiness standard tests such as bulk cargo fire, cargo box cargo fire, combustible liquid fire and the like can be carried out. An image acquisition system, a temperature acquisition system and a smoke detection system can be automatically built in the cabin body, and the image acquisition system can be connected with a computer through a camera to observe the change of flame when a fire disaster occurs; the temperature acquisition system can monitor the flame temperature and the temperature in the cabin in real time in the experimental process by using a thermocouple and a heat flow densimeter; the smoke detection system can measure smoke components generated in a fire experiment in the experiment cabin by connecting the smoke detection system with a related smoke analyzer. In addition, the experiment chamber is provided with observation windows made of fireproof glass, the number of the observation windows is 4, the number of the right door parts of the chamber body is 1, the number of the upper parts of the chamber body is 1, the number of the left side (right side) parts of the chamber body is 2, the specification size of the chamber body is a circle phi 300mm, and the experiment condition in the chamber can be observed in real time. Different fire experiments can be carried out under the condition of not using water mist, and smoke, temperature and the like during the fire experiments can be measured by arranging related equipment in the cabin body.
A water mist generating device is combined in a standard experiment cabin and comprises a water mist water supply adjusting module and a nozzle water flow rate module, so that a water mist field characteristic experiment is carried out. The water mist supply adjusting module controls a nozzle water vapor metering module, and comprises a PLC (programmable logic controller) of a testing unit, wherein the numerical value of a water supply adjusting valve is input to be 100% in a water mist control cabinet, and then the parameter of a return water adjusting valve is input: 90%, 61%, 54%; inputting parameters of a pressure reducing valve: 170kpa, 220kpa and 279kpa, low-pressure double-fluid water mist with gas-liquid ratios of 250/0.5, 300/0.75 and 350/1 respectively can be obtained, a control area of a corresponding nozzle water-gas metering module is arranged in a water mist control cabinet, the opening and the stopping of eight nozzles at most can be controlled simultaneously, an image acquisition system can be built in an experimental cabin to carry out a water mist field special research experiment, parameters such as a low-pressure double-fluid water mist cone angle, a mist droplet speed, a mist flux, a mist momentum and a mist droplet particle size of 250/0.5, 300/0.75 and 350/1 of the gas-liquid ratios can be measured by using a Particle Image Velocimetry (PIV) system and a Marvin instrument respectively, and the characteristics of the mist field when the eight nozzles interact with each other can be researched by utilizing the advantage that the eight nozzles can be opened and closed simultaneously.
The fine water mist generation device consisting of the fine water mist water supply adjusting module and the nozzle water vapor metering module can realize more accurate and stable fine water mist spraying state, is simple to operate, and can realize the characteristic research of fine water mist field characteristics under the conditions of single nozzles and multiple nozzles by utilizing the characteristic of simultaneously controlling the opening and the stopping of eight nozzles. When the water mist fire extinguishing experiment is carried out, the fire source is arranged in the middle of the cabin body, the single-nozzle, double-nozzle, four-nozzle and six-nozzle fire extinguishing experiment is carried out, and the water mist fire extinguishing experiment is researched by adopting an image acquisition system, a temperature acquisition system and a smoke detection system.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A water-based verification system platform applied to fire suppression of a large civil aircraft cargo hold is characterized by comprising a standard experiment chamber, a fine water mist generating device and a control module, wherein the fine water mist generating device is positioned in the standard experiment chamber;
the water mist generating device comprises a water supply adjusting module, a water supply pipeline, a gas supply pipeline, a plurality of water vapor metering modules and a plurality of water mist spray heads (1), wherein the water supply adjusting module, the water supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads (1) are sequentially connected, and the gas supply pipeline, the plurality of water vapor metering modules and the plurality of water mist spray heads (1) are sequentially connected;
the control module is in signal connection with the water supply adjusting module and the plurality of water and gas metering modules;
the water vapor metering modules are arranged in one-to-one correspondence with the water mist nozzles (1), and are used for metering and controlling the amount of water and air entering the water mist nozzles (1);
the water and gas metering module comprises a water supply electromagnetic valve (2), a water flow meter (3) and a pressure sensor (4), and the water supply electromagnetic valve (2), the water flow meter (3) and the pressure sensor (4) are sequentially connected between the water supply pipeline and the water mist spray head (1);
the aqueous vapor measurement module includes air feed solenoid valve (8), electrical control valve (7), digital automatically controlled relief pressure valve (6) and gas flowmeter (5), air feed solenoid valve (8), electrical control valve (7), digital automatically controlled relief pressure valve (6) and gas flowmeter (5) connect gradually in the air feed line with between thin water smoke shower nozzle (1).
2. The water-based verification system platform applied to fire suppression of cargo holds of large civil aircraft as claimed in claim 1, wherein the water supply adjusting module is connected to an external water supply source or a water tank, and the air supply pipeline is connected to an air compressor air supply source (12).
3. The water-based verification system platform for fire suppression in cargo holds of large civil aircraft as claimed in claim 2, wherein the control module includes inputs for obtaining parameters for experimentation.
4. The water-based verification system platform applied to fire suppression of the cargo compartment of the large civil aircraft as claimed in claim 1, wherein the standard experiment compartment is made of domestic high-quality carbon steel.
5. The water-based verification system platform applied to fire suppression of the cargo compartment of the large civil aircraft as claimed in claim 1, wherein the standard experiment compartment comprises a plurality of sections of compartment shells which are detachably assembled together, the compartment shells are provided with compartment doors, high-strength observation windows and detection installation interfaces, the high-strength observation windows are made of fireproof glass, and the bottom of the standard experiment compartment is provided with a water outlet.
6. The water-based verification system platform applied to fire suppression of the cargo hold of the large civil aircraft as claimed in claim 1, wherein the water supply pipeline and the air supply pipeline are both made of toughened hoses.
7. The water-based verification system platform for fire suppression in cargo holds of large civil aircraft as claimed in claim 1, wherein a plurality of instrument interfaces for accessing a plurality of test instruments are provided in the standard laboratory chamber.
8. The water-based verification system platform applied to fire suppression of the cargo compartment of the large civil aircraft as claimed in claim 1, wherein the control module adopts a PLC variable frequency controller.
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| CN113616954A (en) * | 2021-08-18 | 2021-11-09 | 中国商用飞机有限责任公司 | Water mist fire extinguishing system and method for aircraft cargo compartment |
| CN114053636A (en) * | 2021-11-18 | 2022-02-18 | 中国核电工程有限公司 | Fire-fighting equipment module |
| CN115253129B (en) * | 2022-06-24 | 2023-09-15 | 应急管理部上海消防研究所 | Flow self-adaptive adjustment spray control system and self-adaptive adjustment method thereof |
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2020
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| CN112316350A (en) | 2021-02-05 |
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