CN105258950B - Testing method of air turbine starter and air inlet device - Google Patents
Testing method of air turbine starter and air inlet device Download PDFInfo
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- CN105258950B CN105258950B CN201510848210.0A CN201510848210A CN105258950B CN 105258950 B CN105258950 B CN 105258950B CN 201510848210 A CN201510848210 A CN 201510848210A CN 105258950 B CN105258950 B CN 105258950B
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Abstract
The invention discloses a testing method of an air turbine starter and an air inlet device, wherein the air inlet device comprises a main pipeline and a pressure regulating pipeline, an air outlet end of the main pipeline is communicated with an air inlet end of the air turbine starter to be tested, the air inlet end of the main pipeline is communicated with an air inlet end of the pressure regulating pipeline, the main pipeline and the pressure regulating pipeline are in opposite linkage in opening and closing states, and the air inlet device further comprises a circulation area regulating device; the flow area adjusting device is arranged on the pressure regulating pipeline and used for adjusting the flow area of the pressure regulating pipeline. Compared with the prior art, the air inlet device provided by the invention has the advantages that the structural design of the circulation area adjusting device is added on the pressure regulating pipeline, the adjusting time of the test state is shortened, the starting times of the air turbine starter to be tested in the test process are reduced, the service life loss of the air turbine starter to be tested is reduced, the test time is shortened, and the waste of manpower and material resources is reduced.
Description
Technical Field
The invention relates to the technical field of air turbine starter tests; and more particularly, to a method for testing an air turbine starter and an air intake apparatus used in the method.
Background
The air turbine starter is mainly used for ground false start, cold running and starting of a main engine of a large airplane. The working characteristics of the air turbine starter are as follows: the single switch-on duration is short and the service life is calculated in terms of the number of starts. The air turbine starter tester is used for simulating the working state of the air turbine starter, recording the performance parameters of the air turbine starter and completing delivery test. The tester comprises a main pipeline system, a rack, a dynamometer system, a test system, a control system, a pressure regulating pipeline system and the like. The main pipeline system consists of an electric heater, an opening valve, a closing valve, a corrugated pipe assembly, an air inlet switching section and the like.
When a pipeline of an air inlet device of an existing air turbine starter is designed, in order to meet the requirements of air turbine starter tests with different power levels, the flow area of a pressure pipeline is larger than the throat area of a turbine guider of a test piece at that time, and the flow area of a pressure regulating pipeline cannot be regulated. When the air turbine starter is tested, firstly, compressed air flows into the silencing tower through the pressure regulating pipeline, and the test state is regulated by observing the total pressure and total temperature measurement value of the pressure regulating pipeline. After the state is stable, the pressure regulating pipeline is closed, the main pipeline is opened, compressed air with certain pressure and temperature enters the air turbine starter, the air turbine starter starts to work, and the change curve of the rotating speed of an output shaft of the air turbine starter along with time is loaded and controlled by the dynamometer.
Because the throat area of the turbine guider of the test piece is smaller than the flow area of the air inlet pipeline, and the flow area of the pressure regulating pipeline cannot be regulated, the total pressure value measured by the pressure regulating pipeline when the test piece works is greatly different from the total pressure value measured by the main pipeline when the previous test piece does not work. In order to ensure that the test piece is tested in a certain test state, the purpose of the test can be achieved only by adjusting the total pressure value measured by the pressure regulating pipeline for many times (when the test piece is not in operation), so that the service life of the test piece is consumed, the test time is increased, and manpower and material resources are wasted.
Therefore, it is an important technical problem to provide an air inlet device, which can adjust the flow area of the pressure regulating pipeline to reduce the loss of the service life of the test piece, shorten the test time, and reduce the waste of manpower and material resources.
Disclosure of Invention
The invention aims to provide an air inlet device to solve the technical problem that the service life of a test piece is greatly lost due to the fact that the fluid area of a pressure regulating pipeline of the existing air inlet device cannot be regulated.
Another object of the present invention is to provide a method for testing an air turbine starter.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an air inlet device, which comprises a main pipeline and a pressure regulating pipeline, wherein an air outlet end of the main pipeline is communicated with an air inlet end of an air turbine starter to be tested, the air inlet end of the main pipeline is communicated with an air inlet end of the pressure regulating pipeline, the main pipeline and the pressure regulating pipeline are in opposite linkage in opening and closing states, and the air inlet device further comprises a circulation area regulating device; the flow area adjusting device is arranged on the pressure regulating pipeline and used for adjusting the flow area of the pressure regulating pipeline.
According to an embodiment of the present invention, a first linkage valve is disposed on the main pipeline, a second linkage valve is disposed on the pressure regulating pipeline, and the first linkage valve and the second linkage valve are linked in an opposite opening and closing state to adjust the opening and closing state of the main pipeline and the pressure regulating pipeline in a linkage manner.
According to another embodiment, the end of giving vent to anger of second double acting valve has first flange, the pressure regulating pipeline with two junctions of second double acting valve, be equipped with respectively with two second flange that two first flange cooperations are connected, flow area adjusting device locates the second double acting valve gives vent to anger between the first flange of end and the second flange that corresponds.
According to another embodiment, the flow area adjusting device is a gasket, an inner hole is formed in the middle of the gasket, and the size of the airflow flowing through the pressure regulating pipeline through the second linkage valve can be adjusted by adjusting the area of the inner hole.
According to another embodiment, the washer corresponds in shape to the first connecting flange; alternatively, the gasket may have a shape corresponding to the second coupling flange.
According to another embodiment, the gasket bore area is approximately equal to a throat area of a turbine guide of an air turbine starter to be tested.
According to another embodiment, the first connecting flange is connected with the corresponding second connecting flange through bolts, and a plurality of bolt holes are formed in the periphery of the gasket and can be matched with the bolts so as to fix the gasket between the first connecting flange and the second connecting flange.
According to another embodiment, a bellows assembly is provided between the first linkage valve and the air turbine starter.
According to another embodiment, an air inlet adapter section is arranged between the bellows assembly and the air turbine starter, an air inlet end of the air inlet adapter section is communicated with the bellows assembly, and an air outlet end of the air inlet adapter section is communicated with the air turbine starter.
In order to solve the above technical problem, the technical solution provided by the present invention further includes: a testing method of an air turbine starter is provided, wherein the testing method comprises the following steps:
fixing an air turbine starter, fixing the air turbine starter to be tested on a test piece fixing seat and connecting the air turbine starter to be tested to a dynamometer system;
set up air inlet unit, air inlet unit includes main line and pressure regulating pipeline, the end of giving vent to anger of main line communicate in the inlet end of air turbine starter, the inlet end of main line with the inlet end intercommunication of pressure regulating pipeline, the main line with the linkage of the opposite state of opening and close of pressure regulating pipeline set up flow area adjusting device on the pressure regulating pipeline for adjust the flow area of pressure regulating pipeline with the throat area of the turbine director of the air turbine starter that awaits measuring is roughly the same.
Adjusting an experimental state, starting the pressure regulating pipeline, closing the main pipeline, and adjusting the required experimental state by observing the total pressure and total temperature measurement value of the section of the air inlet end of the pressure regulating pipeline when the air turbine starter to be detected does not work; and
and testing, namely opening the main pipeline, closing the pressure regulating pipeline, allowing compressed air with certain pressure and temperature to enter the air turbine starter to be tested, starting the air turbine starter to be tested to work, and controlling the change curve of the output shaft rotating speed along with time by the dynamometer system in a loading manner.
According to the technical scheme, the invention has the beneficial effects that: the air inlet device provided by the invention can adjust the flow area of the pressure regulating pipeline. When the air inlet device is used for testing air turbine starters of different models, the air turbine starter to be tested can be tested in a required specific test state only by adjusting the flow area of the pressure regulating pipeline to be approximately equal to the throat area of the turbine guider of the air turbine starter to be tested. Compared with the prior art, the structural design of the flow area adjusting device added on the pressure regulating pipeline shortens the adjusting time of the test state, reduces the starting times of the air turbine starter to be tested in the test process, reduces the service life loss of the air turbine starter to be tested, shortens the test time, and reduces the waste of manpower and material resources.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an air intake device according to the present invention.
Wherein the reference numerals are as follows:
1. a first linkage valve; 2. a second linkage valve; 3. a bellows assembly; 4. an air inlet adapter section; 5. an air turbine starter; 6. a test piece fixing seat; 7. a mounting seat; 8. sleeving a gear shaft; 9. a dynamometer system; 10. a rack; 11. a gasket.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
Pressure regulating pipeline embodiment
As shown in fig. 1, the present invention provides an embodiment of an intake device. In the present embodiment, the air intake device can be connected to an air intake end of an air turbo starter 5 to be tested, for testing the air turbo starter 5. In the present embodiment, the air turbine starter 5 is tested by a test apparatus including a dynamometer system 9. The dynamometer system 9 is arranged on a rack 10, the rack 10 is further provided with a mounting seat 7, the air outlet end of the air turbine starter 5 is fixed on the mounting seat 7 through a test piece fixing seat 6, and the air turbine starter 5 is connected to the dynamometer system 9 through a sleeve gear shaft 8 so that the dynamometer system 9 can test the air turbine starter. In other embodiments, the above-mentioned structure or device may be replaced by a fixed structure or a test device with the same function, and the invention is not limited thereto.
As shown in fig. 1, in the present embodiment, the intake device mainly includes a main line and a pressure-regulating line. The air outlet end of the main pipeline is communicated with the air inlet end of the air turbine starter 5 to be tested, and the air inlet end of the main pipeline is communicated with the air inlet end of the pressure regulating pipeline. And a first linkage valve 1 is arranged between the air inlet end and the air outlet end of the main pipeline, a second linkage valve 2 is arranged between the air inlet end and the air outlet end of the pressure regulating pipeline, and the opening and closing states of the first linkage valve 1 and the second linkage valve 2 are in opposite linkage so as to be used for linkage regulation of the opening and closing states of the main pipeline and the pressure regulating pipeline. Therefore, high-pressure gas can selectively enter the main pipeline or the pressure regulating pipeline from the gas inlet end of the main pipeline or the pressure regulating pipeline. It should be noted that, the first linkage valve 1 and the second linkage valve 2 may be preferably an electro-hydraulic linkage quick opening valve and an electro-hydraulic linkage quick closing valve respectively, and due to the integrated structure and function of the hydraulic quick opening or quick closing adjusting device, the hydraulic control system and the electric control system, the valves can exert the advantages of compact structure, sensitive action and the like when being used in the air intake device provided by the invention, and realize accurate and quick linkage control of the pipeline position. In other embodiments, the main pipeline and the pressure regulating pipeline may be linked reversely through other valves or pipeline structures, but not limited thereto.
In addition, as shown in fig. 1, in the present embodiment, a group of total pressure probes and total temperature probes are disposed at a section "1-1" of the main pipeline air inlet end (i.e. a common connection position with the pressure regulating pipeline air inlet end) for observing total pressure and total temperature measurement values of the pressure regulating pipeline when the test piece is not in operation, i.e. when the first linkage valve 1 is closed and the second linkage valve 2 is opened, so as to regulate the test state. The main pipeline is provided with another group of total pressure probes and total temperature probes at the section of 2-2 near the air outlet end (namely near the communication position of the main pipeline and the air turbine starter 5), when the test state is stable, the first linkage valve 1 is opened, the second linkage valve 2 is closed, compressed air with certain pressure and temperature enters a test piece, the test piece starts to work, the total pressure and total temperature measurement value of the section of the main pipeline 2-2 is observed, and whether the test state is predicted or not is judged.
As shown in fig. 1, in the present embodiment, the inlet and outlet ends of the second double-acting valve 2 are provided with first connecting flanges, and two second connecting flanges are respectively provided at two junctions of the pressure regulating pipeline and the second double-acting valve 2, and are in fit connection with the two first connecting flanges. The linkage structure of the first linkage valve 1 and the second linkage valve 2 can ensure that the working time of the air turbine starter 5 cannot be wasted by a control system. And a gasket 11 is arranged between the first connecting flange at the air outlet end of the second linkage valve 2 and the corresponding second connecting flange. The washer 11 has an inner hole in the middle, and the area of the inner hole is approximately equal to the throat area of the turbine guide of the air turbine starter 5. Therefore, by selecting the gaskets 11 with different inner hole areas (i.e., adjusting the areas of the inner holes), the flow rate of the air flowing through the pressure regulating pipeline through the second linkage valve 2 can be adjusted, i.e., the flow area of the pressure regulating pipeline can be adjusted. It should be understood by those skilled in the art that the above description of "substantially equal" is mainly to describe the relationship between the area of the inner bore and the throat area of the turbine guide of the air turbine starter 5, i.e. as close to equal as possible, in consideration of the existing manufacturing process of the equipment and the structural features of the equipment itself, and to allow certain tolerances in the relevant experimental requirements in the field. In addition, considering that the working environment is a high-temperature and high-pressure gas, the material of the gasket 11 may preferably be stainless steel, such as 0Cr18Ni9 type stainless steel, but is not limited thereto. By the aid of the mode, the step of starting the air turbine starter 5 to be tested for multiple times in the prior art to test can be omitted, test adjusting times are reduced, adjusting time of a test state is shortened, and test requirements of the air turbine starter 5 to be tested with different power levels are met.
It should be noted that, in other embodiments, the position of the gasket 11 is not exclusive, and for example, the gasket 11 may be disposed between a first connecting flange at the air inlet end of the second linkage valve 2 and a corresponding second connecting flange. The gasket 11 is arranged between the flange butt joint structures, so that the gasket 11 can be conveniently installed and quickly replaced, but the arrangement of the gasket 11 on other pipeline positions of the pressure regulating pipeline is not limited. In addition, other structures may be used as the flow area adjusting means to adjust the flow area of the pressure regulating pipe instead of the gasket 11.
Further, the gasket 11 may be shaped to correspond to the first connection flange or the second connection flange. And a plurality of bolt holes are arranged on the periphery of the gasket 11, the arrangement path of the bolt holes is the same as that of the bolt holes arranged on each connecting flange (each pair of corresponding first connecting flange and second connecting flange are connected through bolts), and the diameter of the bolt holes is the same, so that the gasket 11 can be conveniently connected with each connecting flange. Moreover, when the gaskets 11 with different inner hole areas are used, the number and the positions of the bolt holes do not need to be adjusted, and the bolt holes only need to correspond to the mounting holes of the corresponding connecting flanges. In the embodiment, the connecting flanges of the second linkage valve 2 and the first linkage valve 1 correspond to the connecting flanges of the pipeline connected with the second linkage valve in shape, so that the second linkage valve and the first linkage valve are convenient to assemble, disassemble and maintain. Therefore, in the present embodiment, the gasket 11 has a shape corresponding to the first and second connection flanges. In other embodiments, the shape of the gasket 11 is not limited thereto.
In addition, as shown in fig. 1, in the present embodiment, a bellows assembly 3 is disposed between the first linkage valve 1 and the air turbine starter 5, so as to automatically compensate for the stress deformation and thermal expansion of the main pipeline (i.e., the air intake system), so that the main pipeline is tightly installed and fitted, and leakage of high-temperature gas is avoided. In other embodiments, other structures may be used to replace the bellows assembly 3, and the disclosure is not limited thereto.
In addition, as shown in fig. 1, in the present embodiment, an intake air adapter 4 is provided on a main line between the bellows assembly 3 and the air turbo starter 5. The air inlet end (the pipe diameter corresponds to the main pipeline or the corrugated pipe assembly 3 of the main pipeline) of the air inlet transition section 4 is communicated with the corrugated pipe assembly 3, and the air outlet end of the air inlet transition section 4 is communicated with the air turbine starter 5.
The invention provides a communicating installation mode of an air inlet device, which comprises the following steps: the exhaust installation edge of the air turbine starter 5 to be tested is connected with the test piece fixing seat 6 through the detachable hoop. The test piece fixing seat 6 is fixed on the mounting seat 7 through bolts. The test piece air inlet installation edge is connected with a rear flange of the air inlet adapter tube through a detachable hoop, the air inlet adapter section is connected with the corrugated pipe assembly 3 through bolts, and a rotating shaft of the air turbine starter 5 is connected with a rotating shaft of the dynamometer system 9 through the sleeve gear shaft 8, so that the work sent by the air turbine starter 5 is absorbed by the dynamometer system 9. In addition, in order to facilitate frequent disassembly of the air turbine starter 5, the detachable hoop is adopted for connection between the exhaust mounting edge of the air turbine starter 5 and the test piece fixing seat 6 and between the air inlet mounting edge of the air turbine starter 5 and the air inlet adapter section 4, and the detachable hoop is selected according to the size of an inlet and outlet interface of the air turbine starter 5 and the standard GJB 3821-99600 ℃ high-temperature high-pressure pipeline quick-disassembly hoop or is designed according to the standard.
Method for testing air turbine starter
The invention provides an embodiment of a testing method of an air turbine starter. In this embodiment, the testing method mainly includes the following steps:
the air turbine starter is fixed, an exhaust mounting edge of the air turbine starter is connected with a test piece fixing seat through a detachable hoop, the test piece fixing seat is fixed on a mounting seat through a bolt, and the mounting seat and a dynamometer system are fixed on a rack through a bolt; the air inlet mounting edge of the air turbine starter is connected with the rear flange of the air inlet adapter section through a detachable hoop; the rotating shaft of the air turbine starter is connected with the rotating shaft of the dynamometer through a sleeve gear shaft.
Set up air inlet unit, air inlet unit includes main line and pressure regulating pipeline, the end of giving vent to anger of main line communicate in the inlet end of air turbine starter, the inlet end of main line with the inlet end intercommunication of pressure regulating pipeline, the main line with pressure regulating pipeline's the opposite linkage of state of opening and close set up flow area adjusting device on the pressure regulating pipeline, make its flow area with the throat area of the air turbine starter turbine director that awaits measuring is roughly the same.
And (3) testing the arrangement of probes, wherein a total pressure and total temperature probe is arranged on a section of 1-1 and a total pressure and total temperature probe is arranged on a section of 2-2 on the air inlet device.
And adjusting the test state, opening the pressure regulating pipeline, closing the main pipeline, and adjusting the required test state by observing the total pressure and total temperature measurement value of the section of the '1-1' of the air inlet end of the pressure regulating pipeline when the air turbine starter to be tested does not work.
And testing, namely opening the main pipeline, closing the pressure regulating pipeline, allowing compressed air with certain pressure and temperature to enter the air turbine starter to be tested, starting the air turbine starter to be tested to work, and controlling the change curve of the output shaft rotating speed along with time by the dynamometer system in a loading manner.
It should be noted that, the testing method of the air turbine starter is mainly an exemplary description corresponding to the embodiment of the pressure regulating circuit described in this specification. A person skilled in the art may make various changes, such as additions, deletions, combinations, to the above-described test method, but all fall within the scope of the principle of the test method of an air turbine starter proposed by the present invention.
For example, in other embodiments, the step of fixing the air turbine starter may be flexibly adjusted according to different requirements for a specific connection mode or a connection position of the air turbine starter to be tested on the basis that the air turbine starter to be tested is fixed to the test piece fixing base and connected to the dynamometer system.
As another example, in other embodiments, the placement of the test probes is not limited to only the above-described locations. Further, the step of arranging the test probes may be replaced or deleted by another step of providing a similar device.
While the test method and air induction apparatus of the air turbine starter of the present invention have been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (8)
1. The utility model provides an air inlet unit, its characterized in that includes main line and pressure regulating pipeline, the end intercommunication in the inlet end of the air turbine starter (5) of awaiting measuring of giving vent to anger of main line, the inlet end of main line with the inlet end intercommunication of pressure regulating pipeline, the main line with the opposite linkage of the on-off state of pressure regulating pipeline, air inlet unit still includes:
the flow area adjusting device is arranged on the pressure regulating pipeline and used for adjusting the flow area of the pressure regulating pipeline to be the same as the throat area of a turbine guider of the air turbine starter (5);
the first linkage valve (1) is arranged on the main pipeline; and
the second linkage valve (2) is arranged on the pressure regulating pipeline;
the opening and closing states of the first linkage valve (1) and the second linkage valve (2) are in opposite linkage, and the first linkage valve and the second linkage valve are used for linkage adjustment of the opening and closing states of the main pipeline and the pressure regulating pipeline.
2. The air inlet device according to claim 1, wherein the inlet end and the outlet end of the second double-acting valve (2) are provided with first connecting flanges, two second connecting flanges which are matched and connected with the two first connecting flanges are respectively arranged at two connecting positions of the pressure regulating pipeline and the second double-acting valve (2), and the flow area regulating device is arranged between the first connecting flange at the outlet end of the second double-acting valve (2) and the corresponding second connecting flange.
3. The air inlet device as claimed in claim 2, characterized in that the flow area adjusting device is a gasket (11), an inner hole is formed in the middle of the gasket (11), and the size of the airflow flowing through the pressure regulating pipeline through the second linkage valve (2) can be adjusted by adjusting the area of the inner hole.
4. An air inlet arrangement according to claim 3, characterized in that the gasket (11) corresponds in shape to the first connecting flange; alternatively, the gasket (11) corresponds in shape to the second connecting flange.
5. An air inlet arrangement according to claim 3, characterized in that the first connecting flange is bolted to the corresponding second connecting flange, and that the washer (11) is provided with a plurality of bolt holes in its outer circumference, which bolt holes can cooperate with the bolts for fixing the washer (11) between the first and second connecting flanges.
6. The air intake device according to claim 1, characterized in that a bellows assembly (3) is provided between the first linkage valve (1) and the air turbine starter (5).
7. The air inlet device according to claim 6, characterized in that an air inlet adapter section (4) is arranged between the bellows assembly (3) and the air turbine starter (5), an air inlet end of the air inlet adapter section (4) is communicated with the bellows assembly (3), and an air outlet end of the air inlet adapter section (4) is communicated with the air turbine starter (5).
8. A method of testing an air turbine starter comprising the steps of:
fixing an air turbine starter, fixing the air turbine starter to be tested on a test piece fixing seat and connecting the air turbine starter to be tested to a dynamometer system;
an air inlet device is arranged, the air inlet device is as claimed in any one of claims 1 to 7, and the flow area adjusting device is used for adjusting the flow area of the pressure regulating pipeline to be the same as the throat area of a turbine guider of the air turbine starter to be tested;
adjusting an experimental state, starting the pressure regulating pipeline, closing the main pipeline, and adjusting the required experimental state by observing the total pressure and total temperature measurement value of the section of the air inlet end of the pressure regulating pipeline when the air turbine starter to be detected does not work; and
and testing, namely opening the main pipeline, closing the pressure regulating pipeline, allowing compressed air with certain pressure and temperature to enter the air turbine starter to be tested, starting the air turbine starter to be tested to work, and controlling the change curve of the output shaft rotating speed along with time by the dynamometer system in a loading manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510848210.0A CN105258950B (en) | 2015-11-27 | 2015-11-27 | Testing method of air turbine starter and air inlet device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510848210.0A CN105258950B (en) | 2015-11-27 | 2015-11-27 | Testing method of air turbine starter and air inlet device |
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| CN105258950A CN105258950A (en) | 2016-01-20 |
| CN105258950B true CN105258950B (en) | 2020-03-17 |
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| US4617958A (en) * | 1985-07-25 | 1986-10-21 | Sundstrand Corporation | Control valve |
| CN200975284Y (en) * | 2006-12-01 | 2007-11-14 | 中国航空动力机械研究所 | Air-intake heating apparatus of starters |
| CN103411769A (en) * | 2013-08-23 | 2013-11-27 | 中国航空动力机械研究所 | Air inlet pressure stabilizer used for gas turbine engine swirler performance test |
| CN203743859U (en) * | 2014-03-27 | 2014-07-30 | 山西易高煤层气有限公司 | Pressure regulating device of coalbed methane feed gas inlet pipe |
| CN203837916U (en) * | 2014-05-16 | 2014-09-17 | 北京光徽德润航空技术有限公司 | Testing stand for air turbine starters |
| CN104089780A (en) * | 2014-07-03 | 2014-10-08 | 中国航空动力机械研究所 | Air inflow pipe used for model turbine tester and model turbine tester |
| CN204477355U (en) * | 2015-03-05 | 2015-07-15 | 烟台中集来福士海洋工程有限公司 | Flow regulator in pipeline |
-
2015
- 2015-11-27 CN CN201510848210.0A patent/CN105258950B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617958A (en) * | 1985-07-25 | 1986-10-21 | Sundstrand Corporation | Control valve |
| CN200975284Y (en) * | 2006-12-01 | 2007-11-14 | 中国航空动力机械研究所 | Air-intake heating apparatus of starters |
| CN103411769A (en) * | 2013-08-23 | 2013-11-27 | 中国航空动力机械研究所 | Air inlet pressure stabilizer used for gas turbine engine swirler performance test |
| CN203743859U (en) * | 2014-03-27 | 2014-07-30 | 山西易高煤层气有限公司 | Pressure regulating device of coalbed methane feed gas inlet pipe |
| CN203837916U (en) * | 2014-05-16 | 2014-09-17 | 北京光徽德润航空技术有限公司 | Testing stand for air turbine starters |
| CN104089780A (en) * | 2014-07-03 | 2014-10-08 | 中国航空动力机械研究所 | Air inflow pipe used for model turbine tester and model turbine tester |
| CN204477355U (en) * | 2015-03-05 | 2015-07-15 | 烟台中集来福士海洋工程有限公司 | Flow regulator in pipeline |
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| Publication number | Publication date |
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| CN105258950A (en) | 2016-01-20 |
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