CN210923044U - Verification test device for aviation fuel-air radiator temperature alternating circulation rack - Google Patents
Verification test device for aviation fuel-air radiator temperature alternating circulation rack Download PDFInfo
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- CN210923044U CN210923044U CN201922171565.7U CN201922171565U CN210923044U CN 210923044 U CN210923044 U CN 210923044U CN 201922171565 U CN201922171565 U CN 201922171565U CN 210923044 U CN210923044 U CN 210923044U
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Abstract
The utility model provides an aviation fuel-air radiator temperature alternation circulation bench verification test device, which comprises a high-temperature branch, a low-temperature branch and an exhaust branch, wherein the high-temperature branch and the low-temperature branch form a parallel pipeline and are connected with the exhaust branch in series, and the three branches are crossed with an electric control bypass valve; the high-temperature branch and the low-temperature branch respectively comprise a hand valve, an electric control cut-off valve, a flowmeter, a temperature sensor, a pressure sensor, an electric control pressure stabilizing valve and heating assemblies with different groups of numbers which are connected in series, the exhaust branch comprises the temperature sensor, the pressure sensor, a tested fuel-air radiator, an electric control pressure regulating valve and a silencer which are connected in series, and the number of the tested fuel-air radiators can be multiple; the test device can rapidly realize large-amplitude temperature circulation under the conditions of large flow and relatively stable pressure, can save a large amount of test preparation time, energy and test cost investment, and has high automation degree and higher result accuracy.
Description
Technical Field
The utility model belongs to aviation equipment reliability and life-span aassessment field, concretely relates to temperature reversal circulation bench verification test device towards aviation fuel-air radiator product.
Background
The aviation fuel-air radiator is an important part of an aircraft air conditioning system, and when the aviation fuel-air radiator is mainly used, hot air drawn from an engine compressor is sent into an airborne environment control system through low-temperature fuel oil to absorb heat and reduce temperature.
The temperature alternating cycle test is an important test content of a fuel-air radiator rack verification test, is used for checking the durability level of the fuel-air radiator under the condition of temperature change, and has very important significance for the performance of a product during service, the formulation of a reasonable maintenance strategy and the improvement of comprehensive guarantee capability.
The requirement of the verification test condition of the fuel-air radiator temperature alternating circulation rack is relatively high, and according to the product specification, the rack verification test air end has corresponding regulations on the environmental conditions such as inlet pressure, inlet flow, inlet temperature and the like. However, under the condition of certain pressure, the control fluid keeps larger air flow and realizes temperature alternating reciprocating circulation with large temperature value span of hundreds of degrees and smaller deviation, the number of test cycles exceeds one ten thousand, and relatively higher requirements are put forward on the test capability of test equipment.
The existing aviation fuel-air radiator temperature alternation circulation bench verification test device mostly adopts a single-path air source and heater heating air supply mode for the air end of a tested product, and has the following difficulties: 1. the temperature of hot air is controlled by adopting a single-way heater to realize T1And T2Temperature cross-over of several hundred degrees between two temperature pointsChanging, the single temperature adjustment time is at least more than 1 hour; 2. because the flow required by the test conditions of air and fuel oil is large and the temperature deviation is small, the inlet temperature of the air end is not easy to control, and a large amount of high-precision test control monitoring equipment needs to be invested; 3. the single-path heater is adopted to control the temperature of the hot air to realize large-span temperature alternation, so that huge waste of energy is caused, and the test cost is obviously improved; 4. the reliability of the heater is low, and the heater is easy to be considered as bad operation or easy to burn out due to error calculation of a control program; 5. the test cycle number needs to be recorded manually, and long-time human factors are involved, so that the possibility of wrong operation and wrong recording is increased, and the accuracy of subsequent test data evaluation is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a weak point to prior art, the utility model provides a can be under large-traffic and relatively stable pressure condition, realize temperature cycle by a wide margin fast to but the fuel-air radiator rack verification test device of accurate accuse temperature, it can effectively shorten test time, energy saving and experimental expense input, simplify partial equipment and improve its reliability, effectively reduce the influence of human factor to the test result, also can realize the concurrent test of multiple specification radiator, can solve above-mentioned problem well.
In order to achieve the above object, the utility model adopts the following technical scheme: a verification test device for an aviation fuel-air radiator temperature alternation circulation rack comprises a high-temperature branch, a low-temperature branch and an exhaust branch, wherein the high-temperature branch comprises a first hand valve, a first electric control cut-off valve, a second flow meter, a first temperature sensor, a first pressure sensor and a first electric control pressure maintaining valve which are sequentially connected in series, the first flow meter is connected with the first electric control cut-off valve in parallel, and two groups of heating assemblies which are connected in parallel are arranged between the first electric control pressure maintaining valve and the electric control bypass valve; the low-temperature branch comprises a second hand valve, a fourth electric control cut-off valve, a third flow meter, a third pressure sensor, a third temperature sensor, a second electric control pressure stabilizing valve, a third potentiometer and a third heater which are sequentially connected in series, the fourth flow meter is connected with the fourth electric control cut-off valve in parallel, and the third heater is connected with the electric control bypass valve; the exhaust branch comprises a second temperature sensor, a second pressure sensor, a tested fuel-air radiator, an electric control pressure regulating valve and a silencer which are sequentially connected in series, the second temperature sensor is connected with the electric control bypass valve, a pressure difference sensor is connected with the tested fuel-air radiator in parallel, and the electric control pressure regulating valve is connected with the silencer through an exhaust pipeline.
Preferably, the high-temperature branch and the low-temperature branch form a parallel pipeline and are connected with the exhaust branch in series, the first hand valve and the second hand valve are both connected with an outlet of an air supply station, and a plurality of tested fuel-air radiators can be connected in parallel to realize simultaneous testing.
Preferably, the first group of heating assemblies comprises a second electric control cut-off valve, a first potentiometer and a first heater which are sequentially connected in series, the second group of heating assemblies comprises a second heater, a second potentiometer and a third electric control cut-off valve which are sequentially connected in series, the first electric control pressure stabilizing valve is respectively connected with the second electric control cut-off valve and the third electric control cut-off valve, and the electric control bypass valve is respectively connected with the first heater and the second heater.
Compared with the prior art, the utility model have following advantage:
(1) the connected gas circuit can be changed by controlling the electric control bypass valve in a mode of connecting the high-temperature branch and the low-temperature branch in parallel, the automation degree is high, and a large amount of test preparation time is saved;
(2) the mode that the high-temperature branch and the low-temperature branch are connected in parallel is adopted, for any branch, the opening degree of the electromagnetic valve and the power of the heater do not need to be adjusted repeatedly, but the branch is kept in a relatively stable state, frequent operation is not needed, so that the control precision of each parameter in the gas circuit is high, the fluctuation of the parameter value is small, and meanwhile, the reliability of the test equipment is also improved remarkably;
(3) the method has the advantages that one air supply station is adopted for supplying air, equipment investment is reduced, pipelines are simplified, and multiple aviation fuel-air radiators with multiple specifications can be tested at the same time;
(4) the heater is controlled by connecting the flow potentiometer and the control circuit in series, and when the flow potentiometer senses that the flow in the pipeline is reduced, the heater is powered off firstly, so that the safe and reliable operation of the heater is ensured;
(5) the test cycle times do not need to be recorded manually, and the test temperature switching does not need to be considered as operation, so that the manpower resource is saved, the accurate control on the bench verification test can be well ensured, and accurate data support is provided for the subsequent durability evaluation work.
Drawings
FIG. 1 is a pipeline diagram of an aviation fuel-air radiator temperature alternation cycle bench verification test device.
In the figure:
1 a first hand valve, 2 a first electric control cut-off valve, 3 a first flow meter, 4 a second flow meter, 5 a first temperature sensor, 6 a first pressure sensor, 7 a first electric control pressure maintaining valve, 8 a second electric control cut-off valve, 9 a first potentiometer, 10 a first heater, 11 an electric control bypass valve, 12 a second temperature sensor, 13 a second pressure sensor, 14 a differential pressure sensor, 15 an electric control pressure regulating valve, 16 an exhaust pipeline, 17 a silencer, 18 a tested fuel-air radiator, 19 a second heater, 20 a third heater, 21 a second potentiometer, 22 a third potentiometer, 23 a third electric control cut-off valve, 24 a second electric control pressure maintaining valve, 25 a third temperature sensor, 26 a third pressure sensor, 27 a third flow meter, 28 a fourth flow meter, 29 a fourth electric control cut-off valve and 30 a second hand valve.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Fig. 1 shows an embodiment provided by the present invention, which is an aviation fuel-air radiator temperature alternation cycle bench verification test apparatus, including a high temperature branch, a low temperature branch and an exhaust branch, the high temperature branch and the low temperature branch form a parallel pipeline and are connected in series with the exhaust branch, the high temperature branch includes a first hand valve 1, a first electrically controlled stop valve 2, a second flow meter 4, a first temperature sensor 5, a first pressure sensor 6 and a first electrically controlled pressure-stabilizing valve 7, the first flow meter 3 is connected in parallel with the first electrically controlled stop valve 2, because the high temperature branch requires higher temperature and flow, two sets of heating components connected in parallel are provided between the first electrically controlled pressure-stabilizing valve 7 and the electrically controlled bypass valve 11 to increase the heat supply efficiency, and the number of the heating components can be added as required; the first group of heating assemblies comprise a second electric control cut-off valve 8, a first potentiometer 9 and a first heater 10 which are sequentially connected in series, the second group of heating assemblies comprise a second heater 19, a second potentiometer 21 and a third electric control cut-off valve 23 which are sequentially connected in series, the first electric control pressure stabilizing valve 7 is respectively connected with the second electric control cut-off valve 8 and the third electric control cut-off valve 23, and the electric control bypass valve 11 is respectively connected with the first heater 10 and the second heater 19.
The low-temperature branch comprises a second hand valve 30, a fourth electronic control cut-off valve 29, a third flow meter 27, a third pressure sensor 26, a third temperature sensor 25, a second electronic control pressure-stabilizing valve 24, a third potentiometer 22 and a third heater 20 which are sequentially connected in series, the fourth flow meter 28 is connected with the fourth electronic control cut-off valve 29 in parallel, and the third heater 20 is connected with the electronic control bypass valve 11.
The first hand valve 1 and the second hand valve 30 supply air through the same air supply station, the first hand valve 1 and the second hand valve 30 are used for manually opening and closing two pipelines of a high-temperature branch and a low-temperature branch, and the first electronic control cut-off valve 2 and the fourth electronic control cut-off valve 29 are used for electrically controlling the opening and closing of the two branches; the first flowmeter 3 and the fourth flowmeter 28 are used for testing the flow of the two branches when the air supply amount of the air supply station is small, and the second flowmeter 4 and the third flowmeter 27 are used for testing the flow of the two branches when the air supply amount of the air supply station is large; the first electric control pressure stabilizing valve 7 and the second electric control pressure stabilizing valve 24 respectively stabilize the pressure of the two branches, so that the branch pipelines can reach the specified pressure value; the first potentiometer 9, the second potentiometer 21 and the third potentiometer 22 control whether the corresponding circuits are electrified, and when the flow rate of the pipeline is too low, the potentiometers are powered off to protect heaters on the corresponding circuits.
The exhaust branch comprises a second temperature sensor 12, a second pressure sensor 13, a tested fuel-air radiator 18, an electric control pressure regulating valve 15 and a silencer 17 which are sequentially connected in series, the second temperature sensor 12 is connected with the electric control bypass valve 11, a pressure difference sensor 14 is connected with the tested fuel-air radiator 18 in parallel, the electric control pressure regulating valve 15 provides back pressure for the exhaust branch to ensure that the outlet temperature meets the test conditions, and the pressure difference sensor is used for measuring the pressure difference between the inlet and the outlet of the radiator. The electrically controlled pressure regulating valve 15 is connected with the muffler 17 through an exhaust pipeline 16. The electric control bypass valve 11 is connected with the gas of the two branches, the airflow sound is discharged to the silencer 17, the noise reduction silencer 17 is arranged outdoors to play a role of noise reduction, and the dotted line in figure 1 represents the boundary between the indoor space and the outdoor space.
Preferably, a plurality of tested fuel-air radiators 18 can be arranged between the second pressure sensor 13 and the electrically controlled pressure regulating valve 15, the plurality of tested fuel-air radiators 18 are connected in parallel, and each tested fuel-air radiator 18 is provided with a corresponding pressure difference sensor, so that the simultaneous test of the same verification test device on the plurality of tested fuel-air radiators 18 is realized, and the operation efficiency of the device is improved.
The life test procedure of the tested fuel-air radiator 18 is as follows:
s1, controlling the opening of the first electric control cut-off valve 2 and the fourth electric control cut-off valve 29 to make the electric control pressure regulating valve 15 reach a set back pressure value, further setting the pressure value of the first electric control pressure stabilizing valve 7 and the second electric control pressure stabilizing valve 24 in the high temperature branch and the low temperature branch to reach 0.4 +/-0.02 MPa respectively, monitoring by the first temperature sensor 5 and the third pressure sensor 26 to make the high temperature branch and the low temperature branch reach required pressure values respectively, and if the pressure value is smaller, adjusting the electric control pressure regulating valve 15;
s2, opening two heating components in the high-temperature branch to heat air, and simultaneously opening a second electric control pressure stabilizing valve 24 and a third heater 20 in the low-temperature branch to enable the high-temperature branch to reach the set temperature of 275 +/-0.5 ℃ and the low-temperature branch to reach the set value of 52 +/-0.5 ℃;
and S3, according to the test requirements, the high-temperature branch and the low-temperature branch are respectively communicated by the electric control bypass valve 11 and are exhausted through the exhaust branch, so that the cycle times of 30000 times of temperature alternation required by the test outline are achieved.
The above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides an aviation fuel-air radiator temperature reversal circulation rack verification test device, includes high temperature branch road, low temperature branch road and exhaust branch road, its characterized in that:
the high-temperature branch comprises a first hand valve, a first electric control cut-off valve, a second flow meter, a first temperature sensor, a first pressure sensor and a first electric control pressure-stabilizing valve which are sequentially connected in series, the first flow meter is connected with the first electric control cut-off valve in parallel, and two groups of heating assemblies which are connected in parallel are arranged between the first electric control pressure-stabilizing valve and the electric control bypass valve;
the low-temperature branch comprises a second hand valve, a fourth electric control cut-off valve, a third flow meter, a third pressure sensor, a third temperature sensor, a second electric control pressure stabilizing valve, a third potentiometer and a third heater which are sequentially connected in series, the fourth flow meter is connected with the fourth electric control cut-off valve in parallel, the third heater is connected with the electric control bypass valve, and the third heater is connected with the electric control bypass valve
The exhaust branch comprises a second temperature sensor, a second pressure sensor, a tested fuel-air radiator, an electric control pressure regulating valve and a silencer which are sequentially connected in series, the second temperature sensor is connected with the electric control bypass valve, a pressure difference sensor is connected with the tested fuel-air radiator in parallel, and the electric control pressure regulating valve is connected with the silencer through an exhaust pipeline.
2. The aviation fuel-air radiator temperature alternation cycle bench test device as claimed in claim 1, wherein the high-temperature branch and the low-temperature branch form a parallel pipeline and are connected in series with the exhaust branch, the first hand valve and the second hand valve are both connected with the outlet of the air supply station, and a plurality of tested fuel-air radiators can be connected in parallel to realize simultaneous test.
3. The aviation fuel-air radiator temperature alternation cycle rack verification test device of claim 2, wherein the first group of heating assemblies comprises a second electric control cut-off valve, a first potentiometer and a first heater which are sequentially connected in series, the second group of heating assemblies comprises a second heater, a second potentiometer and a third electric control cut-off valve which are sequentially connected in series, the first electric control surge damping valve is respectively connected with the second electric control cut-off valve and the third electric control cut-off valve, and the electric control bypass valve is respectively connected with the first heater and the second heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922171565.7U CN210923044U (en) | 2019-12-06 | 2019-12-06 | Verification test device for aviation fuel-air radiator temperature alternating circulation rack |
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| CN201922171565.7U CN210923044U (en) | 2019-12-06 | 2019-12-06 | Verification test device for aviation fuel-air radiator temperature alternating circulation rack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912640A (en) * | 2020-07-14 | 2020-11-10 | 渭南美益特换热器技术有限公司 | EGR cooler heat exchange performance experiment system and application method thereof |
| CN114313279A (en) * | 2021-12-28 | 2022-04-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Catalytic inerting system with bypass branch control and control method |
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2019
- 2019-12-06 CN CN201922171565.7U patent/CN210923044U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912640A (en) * | 2020-07-14 | 2020-11-10 | 渭南美益特换热器技术有限公司 | EGR cooler heat exchange performance experiment system and application method thereof |
| CN111912640B (en) * | 2020-07-14 | 2024-02-09 | 渭南美益特发动机减排技术有限公司 | EGR cooler heat exchange performance experiment system and application method thereof |
| CN114313279A (en) * | 2021-12-28 | 2022-04-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Catalytic inerting system with bypass branch control and control method |
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