CN105241617A - Floating life-saving equipment air-tightness inspection instrument and inspection method - Google Patents
Floating life-saving equipment air-tightness inspection instrument and inspection method Download PDFInfo
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- CN105241617A CN105241617A CN201510771463.2A CN201510771463A CN105241617A CN 105241617 A CN105241617 A CN 105241617A CN 201510771463 A CN201510771463 A CN 201510771463A CN 105241617 A CN105241617 A CN 105241617A
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Abstract
The invention relates to an air-tightness inspection device, and, specifically, relates to a floating life-saving equipment air-tightness inspection instrument and inspection method. The inspection instrument comprises two parts, i.e., an air inflating device and an air extracting device, the air inflating device is used to complete a strength test and a tightness test of life-saving equipment, and the air extracting device is used to complete vacuum package of the life-saving equipment. The air-tightness inspection instrument is suitable for air-tightness detection and strength limit detection of the floating life-saving equipment, and extracts air from the life-saving equipment after the air-tightness detection and strength limit detection are completed so that product package is convenient, that is to say, the three kinds of operation can be completed on the life-saving equipment through one set of equipment, so air-tightness inspection instrument has the advantages of convenient maintenance and use, high test efficiency and good reliability and powerfully ensures safety and reliability of aviation equipment.
Description
Technical field
The present invention relates to a kind of air-tightness detection device, specifically, relate to a kind of floatation type life-saving equipment airtight test instrument and inspection method.
Background technology
Aviation lifesaving's article supply the aircrew of forced jump or forced landing for the articles for use of emergency contact and existence under various rugged surroundings, it is the important component part of aviation lifesaving's system, be that the last of aircrew's life support ensures together, have a very important role.
Pilot individual sea lifesaving equipment is that pilot is once marine must equipping and life condition of falling, floatation type life-saving equipment is the necessary condition that the pilot of wrecked aircraft at sea depends on for existence, and current floatation type life-saving equipment is just from traditional single floating, mechanical aeration, unilateral increase buoyancy to multi-usage, automatic inflating, the more optimal anchor direction development such as volume is little, lightweight, buoyancy distribution is reasonable.
Floatation type life-saving equipment in use, of paramount importance problem is charge pressure, impermeability and strength degree problem, namely above-mentioned three must be up to standard, therefore in the maintenance work of floatation type life-saving equipment, flight crew needs regularly to carry out impermeability and intensity detection to floatation type lifesaving equipment, guarantees its reliability and security.
The existing checkout equipment for floatation type life-saving equipment only can realize the single performance test of air-leakage test or strength degree detection, and the working service of existing checkout equipment is inconvenient, poor reliability, and testing efficiency is low, has a strong impact on carrying out of locomotive work.
Summary of the invention
The object of this invention is to provide a kind of floatation type life-saving equipment airtight test instrument and inspection method, can realize that impermeability is carried out to water survival product, strength degree detects, and carry out packaging of bleeding, guarantee the reliability of life-saving equipment.
Technical scheme of the present invention is: floatation type life-saving equipment airtight test instrument, this somascope comprises aerating device and air extractor two parts, aerating device comprise connect successively air pressure pump, retaining valve, gas-holder, air strainer, reduction valve, oil mist separator, electric Proportion valve, inflation solenoid valve, the first pressure unit, rapid-acting coupling, rapid-acting coupling is connected with lifesaving appliance, and aerating device is for completing strength test and the impermeability test of life-saving equipment; Solenoid valve of bleeding is connected between inflation solenoid valve and the first pressure unit, solenoid valve output terminal of bleeding connects vacuum pump, rapid-acting coupling, the first pressure unit, bleed solenoid valve and vacuum pump formation air extractor, air extractor is for completing the vacuum packaging of life-saving equipment.
Preferably, described gas-holder also installs emptying solenoid valve, blowoff valve; Emptying solenoid valve is used for after being completed, and carries out pressure release deposit gas-holder; Emptying solenoid valve is connected with exhaust box; Blowoff valve is used for carrying out blowdown to gas-holder, and blowoff valve adopts manual ball valve.
Preferably, the output terminal of described oil mist separator is divided into four road Parallel opertation, every road include connect successively electric Proportion valve, inflation solenoid valve, the first pressure unit, rapid-acting coupling, realize the inflation operation to four road lifesaving appliances simultaneously.
Preferably, the output terminal of described every road first pressure unit connects bleed solenoid valve and vacuum pump successively, realizes the operation of bleeding to four road lifesaving appliances by a vacuum pump simultaneously.
The present invention also discloses a kind of floatation type life-saving equipment airtight test method, comprises following methods step:
1) gas-charging connection of lifesaving appliance is connected with the rapid-acting coupling of somascope;
2) air pressure pump and inflation solenoid valve is opened, close vacuum pump and solenoid valve of bleeding, when reservoir pressure reaches 400KPa, open electric Proportion valve, by electric Proportion valve, charge pressure is adjusted to strength test pressure, keep strength test pressure a period of time, observe lifesaving appliance and occur with or without gas leakage and rupture event;
3) if lifesaving appliance gas leakage occurs or breaks, show that this lifesaving appliance intensity is defective, strength test terminates; If lifesaving appliance gas leakage does not occur or breaks, then this lifesaving appliance intensity is qualified, carries out performing leak test to lifesaving appliance;
4) air pressure pump is closed, by electric Proportion valve, charge pressure is adjusted to air tightness test pressure, after charge pressure is stable, close inflation solenoid valve, the rapid-acting coupling of lifesaving appliance and somascope is disconnected simultaneously, quiet to a period of time, measure the charge pressure of lifesaving appliance, judge that whether lifesaving appliance impermeability is qualified;
5) if lifesaving appliance measured pressure value is less than charge pressure value, then lifesaving appliance impermeability is defective, and air tightness test terminates; If the measured pressure value of lifesaving appliance equals charge pressure value, then lifesaving appliance impermeability is qualified, vacuumizes packaging to lifesaving appliance;
6) air extraction connector of lifesaving appliance is connected with the rapid-acting coupling of somascope, opens bleed solenoid valve and vacuum pump, lifesaving appliance is bled operation, after bleeding, the air extraction connector of lifesaving appliance and somascope is disconnected, lifesaving appliance is packed.
Preferably, described step 2) in guarantee that pressure is held in strength test pressure by air pressure pump and electric Proportion valve, be specially: when reservoir pressure is more than 0.7MPa, air pressure pump quits work; When reservoir pressure is lower than 0.4MPa, start air pressure pump work, keep gas storage pressure to maintain between 0.4 ~ 0.7MPa.
The present invention's beneficial effect is compared with prior art:
Airtight test instrument of the present invention is applicable to floatation type life-saving equipment air-leakage test and strength degree detects, and bleeds to facilitate the packing of product to life-saving equipment after above-mentioned detection completes.Namely can complete above-mentioned three operations to life-saving equipment by a set of equipment, safeguard easy to use, testing efficiency is high and good reliability, strong guarantees the safe and reliable of aircraft equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation () of somascope of the present invention;
Fig. 2 is the structural representation (two) of somascope of the present invention.
In figure, 1 air pressure pump; 2 retaining valves; 3 gas-holder; 4 emptying solenoid valves; 5 exhaust boxs; 6 second pressure units; 7 blowoff valves; 8 air strainers; 9 reduction valve; 10 oil mist separators; 11 electric Proportion valves; 12 inflation solenoid valves; 13 bleed solenoid valve; 14 first pressure units; 15 rapid-acting couplings; 16 vacuum pumps.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Embodiment 1
See Fig. 1, floatation type life-saving equipment airtight test instrument of the present invention comprises aerating device and air extractor two parts, and aerating device completes strength test and the impermeability test of floatation type life-saving equipment; Air extractor completes the vacuum packaging of floatation type life-saving equipment.
Aerating device comprise connect successively air pressure pump 1, retaining valve 2, gas-holder 3, air strainer 8, reduction valve 9, oil mist separator 10, electric Proportion valve 11, inflation solenoid valve 12, first pressure unit 14, rapid-acting coupling 15, during inflation, rapid-acting coupling 15 is connected with the gas-charging connection of lifesaving appliance.
The effect of air pressure pump 1 is to provide source of the gas power, and be the main body in the dynamo-electric bleed air source device of nucleus equipment of aerating device, the mechanical energy of motor being converted to the device of gaseous tension energy, is compressed-air actuated pressure generator.The maximum flow of air compressor machine is 48lL/min, and flow when maximum working pressure (MWP) is 0.7MPa is 19.3L/min.
Containing excessive steam and oil droplet from gas-holder 3 pressurized air out, also have solid particle polluter, as iron rust, the grains of sand, seal for pipe joints agent etc., these impurity can damage piston packing ring simultaneously, small de-air hole on blocking components and parts, shortens the serviceable life of components and parts or makes it to lose efficacy.Thus, connect air strainer 8 after the gas-holder 3, for the aqueous water in pressurized air, liquid oil droplet are separated, and dust in elimination air and solid particle, but water and the oil of gaseous state cannot be removed.
The output terminal of air strainer 8 connects reduction valve 9, and decompressor 9, for by the source of the gas from gas-holder 3, is adjusted to required force value and carries out voltage stabilizing, guarantees that the Pneumatic instrument that is attached thereto or pneumatic equipment provide stable source of the gas.
The output terminal of reduction valve 9 connects oil mist separator 10, the You Heshui act as in removal pressurized air of oil mist separator 10.See Fig. 2, for improving charging efficiency, the output terminal of oil mist separator 10 is divided into four road Parallel opertation, every road include connect successively electric Proportion valve 11, inflation solenoid valve 12, first pressure unit 14, rapid-acting coupling 15, the inflation operation to four road lifesaving appliances can be realized simultaneously.Namely in Fig. 2, four tunnels that aerating device exports through oil mist separator 10 are specially: oil mist separator 10 is communicated with the 1st road life-saving equipment through electric Proportion valve 11.1, inflation solenoid valve 12.1, first pressure unit 14.1, rapid-acting coupling 15.1; Oil mist separator 10 is communicated with the 2nd road life-saving equipment through electric Proportion valve 11.2, inflation solenoid valve 12.2, first pressure unit 14.2, rapid-acting coupling 15.2; Oil mist separator 10 is communicated with the 3rd road life-saving equipment through electric Proportion valve 11.3, inflation solenoid valve 12.3, first pressure unit 14.3, rapid-acting coupling 15.3; Oil mist separator 10 is communicated with the 4th road life-saving equipment through electric Proportion valve 11.4, inflation solenoid valve 12.4, first pressure unit 14.4, rapid-acting coupling 15.4.Impermeability and the strength degree test of 4 road life-saving equipments can be realized simultaneously.
Electric Proportion valve 11 realizes the air pressure stepless control to aerating device, and the output quantity of electric Proportion valve 11 changes with the change of input quantity, there is certain proportionate relationship between its output quantity and input quantity.Adjust charge pressure by electric Proportion valve 11, the pressure stability of lifesaving appliance is made a strength test to certain pressure, and sets performing leak test pressure, realize performing leak test.
Connect solenoid valve 13 of bleeding between inflation solenoid valve 12 and the first pressure unit 14, the working pressure of inflation solenoid valve 12 under barotropic condition is less than 0.1MPa, and the working pressure of solenoid valve 13 in positive/negative-pressure situation of bleeding is-0.0982 ~ 0.1MPa.Solenoid valve 13 output terminal of bleeding connects vacuum pump 16, and rapid-acting coupling 15, first pressure unit 14, bleed solenoid valve 13 and vacuum pump 16 form air extractor, and when bleeding, rapid-acting coupling 15 is connected with the air extraction connector of lifesaving appliance.
First pressure unit 14 exports the pressure transducer for standard signal, and for checking the pressure of lifesaving appliance, can receive pressure variations and being converted to standard output signals in proportion, the range of the first pressure unit 14 is 0 ~ 250KPa.See Fig. 2, for improving pumping efficiency, the output terminal of every road first pressure unit 14 all connects a road and exports, and the output terminal of Ji Mei road first pressure unit 14 connects bleed solenoid valve 13 and vacuum pump 16 successively, namely realizes the operation of bleeding to four road lifesaving appliances by a vacuum pump 16 simultaneously.In Fig. 2, the composition of No. four air extractors is specially: vacuum pump 16 is communicated with the 1st road life-saving equipment through solenoid valve 13.1, first pressure unit 14.1 of bleeding, rapid-acting coupling 15.1; Vacuum pump 16 is communicated with the 2nd road life-saving equipment through solenoid valve 13.2, first pressure unit 14.2 of bleeding, rapid-acting coupling 15.2; Vacuum pump 16 is communicated with the 3rd road life-saving equipment through solenoid valve 13.3, first pressure unit 14.3 of bleeding, rapid-acting coupling 15.3; Vacuum pump 16 is communicated with the 4th road life-saving equipment through solenoid valve 13.4, first pressure unit 14.4 of bleeding, rapid-acting coupling 15.4.The packaging of bleeding of 4 road life-saving equipments can be realized simultaneously.
Gas-holder 3 is used for stored-gas, play systems stabilisation pressure simultaneously, after gas-holder 3 is connected with air pressure pump 1, can not only storing compressed air, reduce because pressurized air is vented the pressure fluctuation of discontinuous generation, realize air feed and the balance with gas, and can compressed-air actuated temperature be reduced, reduce the load of air strainer 8.Gas-holder 3 volume is 22L, and maximum working pressure (MWP) is 1.0MPa.Gas-holder 3 is installed the second pressure unit 6, for gathering hold-up vessel 3 inner air pressure, when gas-holder 3 pressure reaching 0.7MPa, controlling air pressure pump 1 and quitting work; When gas-holder 3 pressure is lower than 0.4MPa, air air pressure pump 1 works, and keeps gas-holder 3 pressure to maintain between 0.4 ~ 0.8MPa, for next stage system provides source of the gas.By gas-holder 3 gas storage mode, the working time of air pressure pump 1 can be shortened, extend the life-span of air pressure pump 1.Meanwhile, gas-holder 3 is also installed emptying solenoid valve 4, blowoff valve 7.Emptying solenoid valve 4, for after being completed, carrying out pressure release to gas-holder 3 and deposits, and the working pressure of emptying solenoid valve 4 is 0 ~ 0.83MPa; Emptying solenoid valve 4 is connected with exhaust box 5, in order to reduce exhaust noise; Blowoff valve 7 is for discharging condensate water in gas-holder 3 and other pollutant, and blowoff valve 7 adopts manual ball valve.
The course of work of this floatation type life-saving equipment airtight test instrument is:
Tested annex is floatation type lifesaving appliance, the gas-charging connection of lifesaving appliance is connected with the rapid-acting coupling 15 of somascope, open air pressure pump 1 and inflation solenoid valve 12, close vacuum pump 16 and solenoid valve 13 of bleeding, when gas-holder 3 pressure reaches 400KPa, open electric Proportion valve 11, by electric Proportion valve 11, charge pressure is adjusted to strength test pressure simultaneously, when charge pressure reaches strength test pressure, keep strength test pressure a period of time, observe floatation type lifesaving appliance and occur with or without gas leakage and rupture event.If floatation type lifesaving appliance gas leakage occurs or breaks, show that this floatation type lifesaving appliance is defective, strength test terminates; If floatation type lifesaving appliance gas leakage does not occur or breaks, then performing leak test is carried out to floatation type lifesaving appliance.
Guarantee that pressure is held in strength test pressure by air pressure pump 1 and electric Proportion valve 11.When gas-holder 3 pressure is more than 0.7MPa, air pressure pump 1 quits work; When gas-holder 3 pressure is lower than 0.4MPa, starts air pressure pump 1 and work, keep gas-holder 3 pressure to maintain between 0.4 ~ 0.7MPa, gas-holder 3 provides source of the gas to reduction valve 9, makes electric Proportion valve 11 inlet port pressure remain on 0.15MPa by reduction valve 9.
After strength test is qualified, air tightness test is carried out to floatation type lifesaving appliance, air tightness test process is as follows: close air pressure pump 1, by electric Proportion valve 11, charge pressure is adjusted to air tightness test pressure, after charge pressure is stable, close inflation solenoid valve 12, and the rapid-acting coupling 15 of lifesaving appliance and somascope is disconnected.Quiet to a period of time, measure the charge pressure of lifesaving appliance, judge that whether lifesaving appliance impermeability is qualified according to pressure criteria.Adopt the charge pressure of pressure measurement apparatus measures lifesaving appliance, if measured pressure value is less than charge pressure, then the impermeability of lifesaving appliance is defective; If measured pressure value equals charge pressure, then the impermeability of lifesaving appliance is qualified.
After air tightness test is qualified, packaging is vacuumized to lifesaving appliance, vacuum is as follows: be connected with the rapid-acting coupling 15 of somascope by the air extraction connector of lifesaving appliance, open bleed solenoid valve 13 and vacuum pump 16, lifesaving appliance is bled operation, observe the state of bleeding of lifesaving appliance, after bleeding, the air extraction connector of lifesaving appliance and somascope are disconnected, lifesaving appliance is packed.
Claims (6)
1. floatation type life-saving equipment airtight test instrument, it is characterized in that: this somascope comprises aerating device and air extractor two parts, aerating device comprises the air pressure pump (1) connected successively, retaining valve (2), gas-holder (3), air strainer (8), reduction valve (9), oil mist separator (10), electric Proportion valve (11), inflation solenoid valve (12), first pressure unit (14), rapid-acting coupling (15), rapid-acting coupling (15) is connected with lifesaving appliance, aerating device is for completing strength test and the impermeability test of life-saving equipment, solenoid valve (13) of bleeding is connected between inflation solenoid valve (12) and the first pressure unit (14), solenoid valve (13) output terminal of bleeding connects vacuum pump (16), rapid-acting coupling (15), the first pressure unit (14), solenoid valve of bleeding (13) and vacuum pump (16) form air extractor, and air extractor is for completing the vacuum packaging of life-saving equipment.
2. floatation type life-saving equipment airtight test instrument according to claim 1, is characterized in that: described gas-holder (3) is also installed emptying solenoid valve (4), blowoff valve (7); Emptying solenoid valve (4), for after being completed, carrying out pressure release to gas-holder (3) and deposits; Emptying solenoid valve (4) is connected with exhaust box (5); Blowoff valve (7) is for carrying out blowdown to gas-holder (3), and blowoff valve (7) adopts manual ball valve.
3. floatation type life-saving equipment airtight test instrument according to claim 1, it is characterized in that: the output terminal of described oil mist separator (10) is divided into four road Parallel opertation, every road include connect successively electric Proportion valve (11), inflation solenoid valve (12), the first pressure unit (14), rapid-acting coupling (15), realize the inflation operation to four road lifesaving appliances simultaneously.
4. floatation type life-saving equipment airtight test instrument according to claim 3, it is characterized in that: the output terminal of described every road first pressure unit 14 connects bleed solenoid valve 13 and vacuum pump 16 successively, realizes the operation of bleeding to four road lifesaving appliances by a vacuum pump (16) simultaneously.
5. a floatation type life-saving equipment airtight test method, utilizes the floatation type life-saving equipment airtight test instrument described in claim 1, it is characterized in that comprising following methods step:
1) gas-charging connection of lifesaving appliance is connected with the rapid-acting coupling (15) of somascope;
2) air pressure pump (1) and inflation solenoid valve (12) is opened, close vacuum pump (16) and solenoid valve of bleeding (13), when gas-holder (3) pressure reaches 400KPa, open electric Proportion valve (11), by electric Proportion valve (11), charge pressure is adjusted to strength test pressure, keep strength test pressure a period of time, observe lifesaving appliance and occur with or without gas leakage and rupture event;
3) if lifesaving appliance gas leakage occurs or breaks, show that this lifesaving appliance intensity is defective, strength test terminates; If lifesaving appliance gas leakage does not occur or breaks, then this lifesaving appliance intensity is qualified, carries out performing leak test to lifesaving appliance;
4) air pressure pump (1) is closed, by electric Proportion valve (11), charge pressure is adjusted to air tightness test pressure, after charge pressure is stable, close inflation solenoid valve (12), the rapid-acting coupling (15) of lifesaving appliance and somascope is disconnected simultaneously, quiet to a period of time, measure the charge pressure of lifesaving appliance, judge that whether lifesaving appliance impermeability is qualified;
5) if lifesaving appliance measured pressure value is less than charge pressure value, then lifesaving appliance impermeability is defective, and air tightness test terminates; If the measured pressure value of lifesaving appliance equals charge pressure value, then lifesaving appliance impermeability is qualified, vacuumizes packaging to lifesaving appliance;
6) air extraction connector of lifesaving appliance is connected with the rapid-acting coupling (15) of somascope, open solenoid valve of bleeding (13) and vacuum pump (16), lifesaving appliance is bled operation, after bleeding, the air extraction connector of lifesaving appliance and somascope are disconnected, lifesaving appliance is packed.
6. floatation type life-saving equipment airtight test method according to claim 5, it is characterized in that: described step 2) in guarantee that pressure is held in strength test pressure by air pressure pump (1) and electric Proportion valve (11), be specially: when gas-holder (3) pressure is more than 0.7MPa, air pressure pump (1) quits work; When gas-holder (3) pressure is lower than 0.4MPa, start air pressure pump (1) work, keep gas-holder (3) pressure to maintain between 0.4 ~ 0.7MPa.
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| CN108181061A (en) * | 2018-01-16 | 2018-06-19 | 重庆安木科技有限公司 | A kind of new energy car battery packet tests system |
| CN108645573A (en) * | 2018-08-10 | 2018-10-12 | 麦格纳（太仓）汽车科技有限公司 | A kind of Vehicular lamp sealing propertytest integrated test facility and device |
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
| CN111060263A (en) * | 2019-12-31 | 2020-04-24 | 国营芜湖机械厂 | Checking device and checking method for air bag type lifesaving harness of pilot |
| CN112382422A (en) * | 2020-11-11 | 2021-02-19 | 中国核动力研究设计院 | Special pressurizing system and method for detecting sealing performance of pressurized water reactor pressure vessel |
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| CN108645573A (en) * | 2018-08-10 | 2018-10-12 | 麦格纳（太仓）汽车科技有限公司 | A kind of Vehicular lamp sealing propertytest integrated test facility and device |
| CN108645573B (en) * | 2018-08-10 | 2024-04-19 | 麦格纳（太仓）汽车科技有限公司 | Comprehensive test method and device for detecting tightness of vehicle lamp |
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
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| CN112382422A (en) * | 2020-11-11 | 2021-02-19 | 中国核动力研究设计院 | Special pressurizing system and method for detecting sealing performance of pressurized water reactor pressure vessel |
| CN112382422B (en) * | 2020-11-11 | 2022-04-15 | 中国核动力研究设计院 | Special pressurizing system and method for detecting sealing performance of pressurized water reactor pressure vessel |
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