CN214952162U - Aeroengine bleed test equipment - Google Patents
Aeroengine bleed test equipment Download PDFInfo
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- CN214952162U CN214952162U CN202120655215.2U CN202120655215U CN214952162U CN 214952162 U CN214952162 U CN 214952162U CN 202120655215 U CN202120655215 U CN 202120655215U CN 214952162 U CN214952162 U CN 214952162U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000007613 environmental effect Effects 0.000 claims abstract description 9
- 230000003068 static effect Effects 0.000 claims description 23
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000004088 simulation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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Abstract
The utility model relates to an aeroengine bleed test equipment to solve traditional APS bleed test equipment and can not carry out the precision measurement to important technological parameters such as bleed temperature, pressure, flow in the start test process, also can't simulate environmental control bleed system load and carry out dynamic test, and do not have other air source interface's problem. The equipment comprises an APU bleed air output pipeline, a flow monitoring pipeline, an ATS bleed air input pipeline, an environmental control bleed air pipeline, a bidirectional conveying pipeline, a bidirectional switching pipeline, an exhaust tower, a first air source output pipeline and a second air source output pipeline. The environment-controlled air-entraining pipeline can realize the load test of the environment-controlled air-entraining system; each pipeline is provided with a probe and a flowmeter, so that key process parameters such as bleed air flow, temperature, pressure and the like in a test can be accurately measured; the first air source output pipeline and the second air source output pipeline can support air supply of various air sources.
Description
Technical Field
The utility model relates to an aeroengine test field, concretely relates to aeroengine bleed test equipment.
Background
In an aircraft Auxiliary Power System (APS) starting test, bleed air flow output by an Auxiliary Power Unit (APU) is transmitted to an Air Turbine Starter (ATS) arranged on an aircraft accessory casing (AMAD), and a turbine outputs shaft Power by air flow impact to drive the aircraft accessory casing to operate so as to start a main engine. During the starting process of the APS, the temperature, pressure and flow rate of the bleed air are important parameters in the test process.
The traditional APS bleed air test equipment can only realize that the APU bleed air is directly conveyed to the ATS through a pipeline for a start test, can not accurately measure important process parameters such as bleed air temperature, pressure, flow and the like in the start test process, and can not simulate the load of an environment-controlled bleed air system for a dynamic test. Because the equipment does not have other air source interfaces, the starting test can not be carried out independently when the APU does not work, so when the starting system fails in the test run test, the fault point is difficult to be isolated to each part, and the trouble is brought to troubleshooting.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving traditional APS bleed test equipment and can not carrying out the precision measurement to important technological parameters such as bleed temperature, pressure, flow in the start test process, also can't simulate environmental control bleed system load and carry out dynamic test, and do not have the problem of other air source interfaces, and provide an aeroengine bleed test equipment.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an aeroengine bleed air test equipment which is characterized in that:
the system comprises an APU bleed air output pipeline, a flow monitoring pipeline, an ATS bleed air input pipeline, an environmental control bleed air pipeline, a bidirectional conveying pipeline, a bidirectional switching pipeline, an exhaust tower, a first air source output pipeline and a second air source output pipeline;
the inlet of the APU bleed air output pipeline is connected with the APU bleed air outlet, and the outlet of the APU bleed air output pipeline is respectively connected with the inlet of the flow monitoring pipeline and one end of the bidirectional conveying pipeline; the APU bleed air output pipeline is provided with a one-way valve, an APU bleed air outlet static pressure probe, an APU bleed air outlet total pressure probe and an APU bleed air outlet temperature probe;
the outlet of the flow monitoring pipeline is respectively connected with the inlet of the ATS bleed air input pipeline and the inlet of the environment-controlled bleed air pipeline; a flow meter is arranged on the flow monitoring pipeline;
the outlet of the ATS bleed air input pipeline is connected with the ATS bleed air inlet; an ATS inlet temperature probe and an ATS inlet static pressure probe are arranged on the ATS bleed air input pipeline;
the outlet of the environment-controlled bleed pipeline is connected with an exhaust tower; the environment-controlled bleed pipeline is provided with an environment-controlled bleed module, an environment-controlled bleed static pressure probe, an environment-controlled bleed temperature probe and a bleed flow adjusting module; the environment-controlled air entraining module comprises an environment-controlled air entraining device and an environment-controlled switch valve which are arranged in parallel;
the other end of the bidirectional conveying pipeline is respectively connected with an outlet of the first air source output pipeline and one end of the bidirectional switching pipeline;
the inlet of the first air source output pipeline is connected with a simulation air source;
the other end of the bidirectional switching pipeline is respectively connected with an outlet of the second gas source output pipeline and an inlet of the exhaust pipeline; a first pneumatic stop valve is arranged on the bidirectional switching pipeline;
the inlet of the second air source output pipeline is connected with a low-pressure air source; a low-pressure gas source stop valve, a low-pressure gas source regulating valve and a low-pressure gas source outlet pressure probe are arranged on the second gas source output pipeline;
the outlet of the exhaust pipeline is connected with an exhaust tower; and a second pneumatic stop valve and an exhaust temperature probe are arranged on the exhaust pipeline.
Furthermore, the bleed air flow adjusting module comprises a bleed air flow coarse adjusting valve and a bleed air flow fine adjusting valve which are arranged in parallel.
Furthermore, the number of the ATS bleed air input pipelines is two; inlets of the two ATS bleed air input pipelines are connected with outlets of the flow monitoring pipelines, and outlets of the two ATS bleed air input pipelines are connected with the two ATS bleed air inlets respectively.
The utility model discloses compare prior art's beneficial effect is:
(1) the aeroengine bleed air test device provided by the utility model can meet the requirements of ATS starting test and environment control bleed air system load test at the same time; key process parameters such as bleed air flow, temperature, pressure and the like in a test can be accurately measured through a probe and a flowmeter on a pipeline; through setting up multiple air supply output pipeline, can support multiple air supply air feed, also can test when APU is out of work, the isolation and the analysis to the trouble among the system test of being convenient for.
(2) The equipment is reasonable in layout, and installation operation of tested products and maintenance and verification operation of the equipment are facilitated. The whole flow resistance of the gas pipeline of the device is small, and the test error is small. The pneumatic valve is more suitable for remote control of equipment.
(3) The equipment adopts the existing environment-controlled bleed air device for the aero-engine and simulates the existing environment-controlled bleed air pipeline, so that the load environment of the environment-controlled system of the aero-engine is accurately simulated, and the load test of the environment-controlled bleed air system is realized.
Drawings
Figure 1 is the structure schematic diagram of the utility model discloses aeroengine bleed test equipment.
In the figure, 1-APU bleed air output pipeline, 2-flow monitoring pipeline, 3-ATS bleed air input pipeline, 4-ring control bleed air pipeline, 5-two-way conveying pipeline, 6-two-way switching pipeline, 7-exhaust pipeline, 8-exhaust tower, 9-first air source output pipeline, 10-second air source output pipeline, 11-one-way valve, 12-bleed air outlet static pressure probe, 13-bleed air outlet total pressure probe, 14-APU bleed air outlet temperature probe, 15-flow meter, 16-ATS inlet temperature probe, 17-ATS inlet static pressure probe, 18-ring control bleed air device, 19-ring control switch valve, 20-ring control bleed air static pressure probe, 21-ring control bleed air temperature probe, 22-bleed air flow rough adjusting valve, 23-bleed air flow fine adjusting valve, 24-a first pneumatic stop valve, 25-a second pneumatic stop valve, 26-an exhaust temperature probe, 27-a low-pressure air source stop valve, 28-a low-pressure air source regulating valve, 29-a low-pressure air source outlet pressure probe, 30-a simulation air source and 31-a low-pressure air source.
Detailed Description
In order to make the objects, advantages and features of the present invention clearer, the aero-engine bleed air test device proposed by the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The aero-engine bleed air test device provided by this embodiment is shown in fig. 1, and includes an APU bleed air output pipeline 1, a flow monitoring pipeline 2, an ATS bleed air input pipeline 3, an environment-controlled bleed air pipeline 4, a bidirectional conveying pipeline 5, a bidirectional switching pipeline 6, an exhaust pipeline 7, an exhaust tower 8, a first air source output pipeline 9, and a second air source output pipeline 10.
The inlet of the APU bleed air output pipeline 1 is connected with the APU bleed air outlet, and the outlet of the APU bleed air output pipeline is respectively connected with the inlet of the flow monitoring pipeline 2 and one end of the bidirectional conveying pipeline 5. The APU bleed air output pipeline 1 is provided with a one-way valve 11, and an APU bleed air outlet static pressure probe 12, an APU bleed air outlet total pressure probe 13 and an APU bleed air outlet temperature probe 14 which are arranged behind the one-way valve 11.
The outlet of the flow monitoring pipeline 2 is respectively connected with the inlet of an ATS bleed air input pipeline 3 and the inlet of an annular bleed air pipeline 4. The flow rate monitoring line 2 is provided with a flow meter 15.
And an outlet of the ATS bleed air input pipeline 3 is connected with an ATS bleed air inlet. An ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17 are arranged on the ATS bleed air input pipeline 3. In this embodiment, there are two ATS, and therefore there are two ATS bleed air input pipelines 3, and the inlets of the two ATS bleed air input pipelines 3 are both connected to the outlet of the flow monitoring pipeline 2, and the outlets thereof are respectively connected to the two ATS bleed air inlets.
The outlet of the environment-controlled bleed air pipeline 4 is connected with an exhaust tower 8. An annular control bleed air module, a bleed air flow adjusting module, an annular control bleed air static pressure probe 20 and an annular control bleed air temperature probe 21 which are arranged between the annular control bleed air module and the bleed air flow adjusting module are sequentially arranged on the annular control bleed air pipeline 4. The environment-controlled bleed air module comprises an environment-controlled bleed air device 18 and an environment-controlled switch valve 19 which are arranged in parallel, and the bleed air flow regulating module comprises a bleed air flow coarse regulating valve 22 and a bleed air flow fine regulating valve 23 which are arranged in parallel.
The environment-controlled bleed air device 18 is an existing product for an aircraft engine, so that the environment-controlled system load environment of the aircraft engine can be accurately simulated. And opening the annular bleed air device 18 and closing the annular switch valve 19 to enable gas to pass through the annular bleed air device 18, or opening the annular switch valve 19 and closing the annular bleed air device 18 to enable gas to pass through the annular switch valve 19, and simultaneously adjusting the bleed air flow coarse adjustment valve 22 and the bleed air flow fine adjustment valve 23 to perform annular bleed air load adjustment, so that the load test of the annular bleed air system can be realized.
The environment-controlled switch valve 19 is a simulation device of the environment-controlled bleed air device 18 product, and is used for simulating the switch function of the environment-controlled bleed air device 18, and an environment-controlled bleed air load test can be completed without the environment-controlled bleed air device 18. In order to enable the product of the environment-controlled bleed air device 18 to have a more real test environment, one path of the parallel connection is connected into the environment-controlled bleed air device 18, and can be used for performance detection of the environment-controlled bleed air device 18. When a load test of the environment-controlled bleed air system is carried out, no matter the environment-controlled bleed air device 18 or the environment-controlled switch valve 19 is opened for the test, the environment-controlled load is generated by adjusting two bleed air flow coarse adjusting valves 22 and bleed air flow fine adjusting valves 23 which are connected in parallel.
The other end of the bidirectional conveying pipeline 5 is respectively connected with an outlet of the first air source output pipeline 9 and one end of the bidirectional switching pipeline 6.
The inlet of the first air supply output pipeline 9 is connected with a simulated air supply 30, wherein the simulated air supply 30 is a ground air supply vehicle.
The other end of the bidirectional switching pipeline 6 is respectively connected with an outlet of the second air source output pipeline 10 and an inlet of the exhaust pipeline 7. The bidirectional switching pipeline 6 is provided with a first pneumatic stop valve 24.
The inlet of the second gas source output pipeline 10 is connected with a low-pressure gas source 31, where the low-pressure gas source 31 is specifically a plant low-pressure gas source. The second gas source output pipeline 10 is sequentially provided with a low-pressure gas source cut-off valve 27, a low-pressure gas source regulating valve 28 and a low-pressure gas source outlet pressure probe 29.
The outlet of the exhaust pipeline 7 is connected with an exhaust tower 8. The exhaust pipeline 7 is provided with a second pneumatic cut-off valve 25 and an exhaust temperature probe 26 in sequence. The exhaust line 7 can be used for direct discharge testing of APU bleed air, analog air source 30 output gas, low pressure air source 31 output gas, discharge is controlled by controlling the switching of the first pneumatic cutoff valve 24 and the second pneumatic cutoff valve 25, and the temperature of the discharge air flow is measured by the exhaust temperature probe 26.
The method for testing by adopting the aeroengine bleed air test equipment specifically comprises an ATS starting test and an environment-controlled bleed air system load test.
The ATS start-up test includes the following steps:
1) supplying gas to the ATS by any one of the following means;
the first method is as follows: APU air feed
The simulation air source 30, the low-pressure air source cut-off valve 27, the first pneumatic cut-off valve 24, the environment-controlled bleed air device 18 and the environment-controlled switch valve 19 are closed, the check valve 11 is automatically opened under the action of pipeline air pressure, and the APU bleed air is supplied to the ATS after sequentially passing through the check valve 11 and the flow meter 15;
the second method comprises the following steps: simulation gas supply 30
Closing the low-pressure air source cut-off valve 27, the first pneumatic cut-off valve 24, the environment-controlled air entraining device 18 and the environment-controlled switch valve 19, opening the simulated air source 30, automatically closing the one-way valve 11 under the action of pipeline air pressure, and supplying the air output by the simulated air source 30 to the ATS after passing through the flow meter 15;
the third method comprises the following steps: low pressure gas source 31 supplies gas
The simulation air source 30, the second pneumatic stop valve 25, the environment-controlled air entraining device 18 and the environment-controlled switch valve 19 are closed, the low-pressure air source stop valve 27 and the first pneumatic stop valve 24 are opened, the check valve 11 is automatically closed under the action of the pipeline air pressure, and the air output by the low-pressure air source 31 passes through the low-pressure air source stop valve 27, the low-pressure air source regulating valve 28, the first pneumatic stop valve 24 and the flow meter 15 in sequence and then is supplied to the ATS; by controlling the opening of the low-pressure air source regulating valve 28, the adjustment of the air supply flow of the low-pressure air source in the plant area can be realized so as to simulate the change of the air entraining flow of the APU;
2) acquiring corresponding parameters by using a probe on a pipeline through which gas passes and a flowmeter 15;
in the first mode, an APU bleed air outlet static pressure probe 12, an APU bleed air outlet total pressure probe 13 and an APU bleed air outlet temperature probe 14 are used for simultaneously measuring airflow parameters of the APU bleed air outlet; measuring the gas flow rate with the flow meter 15; measuring ATS inlet airflow parameters by using an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17;
in the second mode, the gas flow rate is measured by the flow meter 15; measuring ATS inlet airflow parameters by using an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17;
in the third mode, the outlet pressure probe 29 of the low-pressure gas source is used for measuring the outlet gas flow parameter of the low-pressure gas source 31; measuring the gas flow rate by means of a flow meter 15; measuring ATS inlet airflow parameters through an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17;
the environmental control bleed air system load test comprises the following steps:
1) simultaneously supplying air to the ATS and the environment-controlled bleed air pipeline 4 in any one of the following manners;
the first method is as follows: APU air feed
The simulation air source 30, the low-pressure air source cut-off valve 27 and the first pneumatic cut-off valve 24 are closed, the environment-controlled bleed air device 18 or the environment-controlled switch valve 19 is opened, the one-way valve 11 is automatically opened under the action of pipeline air pressure, the APU bleed air sequentially passes through the one-way valve 11 and the flowmeter 15, one part of the APU bleed air is supplied to the ATS, and the other part of the APU bleed air sequentially passes through the environment-controlled bleed air module and the bleed air flow adjusting module and then is discharged to the exhaust tower 8;
the second method comprises the following steps: simulation gas supply 30
Closing the low-pressure air source cut-off valve 27 and the first pneumatic cut-off valve 24, opening the simulated air source 30, opening the environment-controlled air-entraining device 18 or the environment-controlled switch valve 19, automatically closing the one-way valve 11 under the action of the pipeline air pressure, feeding a part of the air output by the simulated air source 30 to the ATS after passing through the flow meter 15, and discharging the other part of the air to the exhaust tower 8 after sequentially passing through the environment-controlled air-entraining module and the air-entraining flow regulating module;
the third method comprises the following steps: low pressure gas source 31 supplies gas
The simulation air source 30 and the second pneumatic stop valve 25 are closed, the low-pressure air source stop valve 27 and the first pneumatic stop valve 24 are opened, the environment-controlled air entraining device 18 or the environment-controlled switch valve 19 is opened, the one-way valve 11 is automatically closed under the action of pipeline air pressure, part of air output by the low-pressure air source 31 is supplied to the ATS after sequentially passing through the low-pressure air source stop valve 27, the low-pressure air source regulating valve 28, the first pneumatic stop valve 24 and the flow meter 15, and the other part of air is discharged to the exhaust tower 8 after sequentially passing through the environment-controlled air entraining module and the air entraining flow regulating module; by controlling the opening of the low-pressure air source regulating valve 28, the adjustment of the air supply flow of the low-pressure air source in the plant area can be realized so as to simulate the change of the air entraining flow of the APU;
2) carrying out load adjustment of an environment-controlled bleed air load test through a bleed air flow adjusting module;
specifically, a bleed air flow coarse adjustment valve 22 and a bleed air flow fine adjustment valve 23 are adopted for load adjustment;
3) acquiring corresponding parameters by using a probe on a pipeline through which gas passes and a flowmeter 15;
in the first mode, an APU bleed air outlet static pressure probe 12, an APU bleed air outlet total pressure probe 13 and an APU bleed air outlet temperature probe 14 are used for simultaneously measuring airflow parameters of the APU bleed air outlet; measuring the gas flow rate with the flow meter 15; measuring ATS inlet airflow parameters by using an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17; measuring parameters of the environment-controlled bleed air flow by using an environment-controlled bleed air static pressure probe 20 and an environment-controlled bleed air temperature probe 21;
in the second mode, the gas flow rate is measured by the flow meter 15; measuring ATS inlet airflow parameters by using an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17; measuring parameters of the environment-controlled bleed air flow by using an environment-controlled bleed air static pressure probe 20 and an environment-controlled bleed air temperature probe 21;
in the third mode, the outlet pressure probe 29 of the low-pressure gas source is used for measuring the outlet gas flow parameter of the low-pressure gas source 31; measuring the gas flow rate by means of a flow meter 15; measuring ATS inlet airflow parameters through an ATS inlet temperature probe 16 and an ATS inlet static pressure probe 17; and measuring the parameters of the environmental control bleed air flow by using an environmental control bleed air static pressure probe 20 and an environmental control bleed air temperature probe 21.
Claims (3)
1. The utility model provides an aeroengine bleed test equipment which characterized in that:
the system comprises an APU bleed air output pipeline (1), a flow monitoring pipeline (2), an ATS bleed air input pipeline (3), an environment-controlled bleed air pipeline (4), a bidirectional conveying pipeline (5), a bidirectional switching pipeline (6), an exhaust pipeline (7), an exhaust tower (8), a first air source output pipeline (9) and a second air source output pipeline (10);
the inlet of the APU bleed air output pipeline (1) is connected with the APU bleed air outlet, and the outlet of the APU bleed air output pipeline is respectively connected with the inlet of the flow monitoring pipeline (2) and one end of the bidirectional conveying pipeline (5); the APU bleed air output pipeline (1) is provided with a one-way valve (11), an APU bleed air outlet static pressure probe (12), an APU bleed air outlet total pressure probe (13) and an APU bleed air outlet temperature probe (14);
the outlet of the flow monitoring pipeline (2) is respectively connected with the inlet of the ATS bleed air input pipeline (3) and the inlet of the environmental control bleed air pipeline (4); a flow meter (15) is arranged on the flow monitoring pipeline (2);
an outlet of the ATS bleed air input pipeline (3) is connected with an ATS bleed air inlet; an ATS inlet temperature probe (16) and an ATS inlet static pressure probe (17) are arranged on the ATS bleed air input pipeline (3);
the outlet of the environment-controlled bleed air pipeline (4) is connected with an exhaust tower (8); the environment-controlled bleed air pipeline (4) is provided with an environment-controlled bleed air module, an environment-controlled bleed air static pressure probe (20), an environment-controlled bleed air temperature probe (21) and a bleed air flow regulating module; the environment-controlled air entraining module comprises an environment-controlled air entraining device (18) and an environment-controlled switch valve (19) which are arranged in parallel;
the other end of the bidirectional conveying pipeline (5) is respectively connected with an outlet of the first air source output pipeline (9) and one end of the bidirectional switching pipeline (6);
the inlet of the first air source output pipeline (9) is connected with a simulation air source (30);
the other end of the bidirectional switching pipeline (6) is respectively connected with an outlet of a second air source output pipeline (10) and an inlet of an exhaust pipeline (7); a first pneumatic cut-off valve (24) is arranged on the bidirectional switching pipeline (6);
the inlet of the second air source output pipeline (10) is connected with a low-pressure air source (31); a low-pressure gas source cut-off valve (27), a low-pressure gas source regulating valve (28) and a low-pressure gas source outlet pressure probe (29) are arranged on the second gas source output pipeline (10);
the outlet of the exhaust pipeline (7) is connected with an exhaust tower (8); and a second pneumatic stop valve (25) and an exhaust temperature probe (26) are arranged on the exhaust pipeline (7).
2. The aircraft engine bleed air test apparatus of claim 1, wherein:
the bleed air flow adjusting module comprises a bleed air flow coarse adjusting valve (22) and a bleed air flow fine adjusting valve (23) which are arranged in parallel.
3. An aircraft engine bleed air test plant according to claim 1 or 2, characterised in that:
the number of the ATS bleed air input pipelines (3) is two; inlets of the two ATS bleed air input pipelines (3) are connected with outlets of the flow monitoring pipeline (2), and outlets of the two ATS bleed air input pipelines are connected with the two ATS bleed air inlets respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655215.2U CN214952162U (en) | 2021-03-31 | 2021-03-31 | Aeroengine bleed test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655215.2U CN214952162U (en) | 2021-03-31 | 2021-03-31 | Aeroengine bleed test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214952162U true CN214952162U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120655215.2U Withdrawn - After Issue CN214952162U (en) | 2021-03-31 | 2021-03-31 | Aeroengine bleed test equipment |
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| Country | Link |
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| CN (1) | CN214952162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074948A (en) * | 2021-03-31 | 2021-07-06 | 西安翔迅科技有限责任公司 | Aeroengine air-entraining test equipment and test method |
-
2021
- 2021-03-31 CN CN202120655215.2U patent/CN214952162U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074948A (en) * | 2021-03-31 | 2021-07-06 | 西安翔迅科技有限责任公司 | Aeroengine air-entraining test equipment and test method |
| CN113074948B (en) * | 2021-03-31 | 2024-07-23 | 西安翔迅科技有限责任公司 | Aeroengine bleed air test equipment and test method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211130 Effective date of abandoning: 20240723 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211130 Effective date of abandoning: 20240723 |