CN112161760A - Gas turbine casing airtightness detection tool and detection method - Google Patents
Gas turbine casing airtightness detection tool and detection method Download PDFInfo
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- CN112161760A CN112161760A CN202011182773.8A CN202011182773A CN112161760A CN 112161760 A CN112161760 A CN 112161760A CN 202011182773 A CN202011182773 A CN 202011182773A CN 112161760 A CN112161760 A CN 112161760A
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- pressure
- airtightness
- gas turbine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Chemical & Material Sciences (AREA)
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a gas turbine casing airtightness detection tool, which comprises: a gas tank for supplying gas for detecting airtightness of the gas turbine casing; the airtight tool is arranged on the casing and used for detecting airtightness; and the pipeline is connected with the gas tank and the airtight tool, wherein a pressure reducing valve for adjusting gas pressure and a pressure gauge for detecting the gas pressure in the pipeline are arranged on the pipeline. The gas turbine air tightness test tool can be used for realizing air tightness tests of light and heavy gas turbine casings, is simple in experiment operation, improves air tightness detection efficiency by a detection method corresponding to the tool, and can accurately determine an air leakage position.
Description
Technical Field
The invention relates to the technical field of air tightness detection methods, in particular to a gas turbine casing air tightness detection tool and a detection method.
Background
Gas turbine inlet and bearing casings generally involve problems with bleed air, bearing, and connection to other components. For light and heavy gas turbines, lubricating oil passages and sealed gas passages need to be arranged on a casing due to the lubricating of bearings, the sealing of a bearing cavity and the cooling requirement of a hot end component.
Generally, a lubricating oil path and a sealed gas path pipeline on a casing are generally arranged inside the casing and are completed by a support plate or a buried pipe for connecting an inner casing and an outer casing. In order to ensure the safety and stability of the gas turbine, pressure resistance tests and air tightness tests are required to be carried out on various lubricating oil passages and sealing gas passages on the casing.
Therefore, in order to solve the problems, the invention provides a gas turbine airtight test method which can realize airtight test of light and heavy gas turbine casings.
Disclosure of Invention
In order to solve the problems, the invention provides a gas turbine air tightness test method for carrying out pressure resistance tests and air tightness tests on various lubricating oil passages and sealed gas passages on a casing, and the air tightness tests of light and heavy gas turbine casings can be realized.
The invention aims to provide a gas turbine casing airtightness detection tool, which comprises: a gas tank for supplying gas for detecting airtightness of the gas turbine casing; the airtight tool is arranged on the casing and used for detecting airtightness; and the pipeline is connected with the gas tank and the airtight tool, wherein a pressure reducing valve for adjusting gas pressure and a pressure gauge for detecting the gas pressure in the pipeline are arranged on the pipeline.
The gas turbine casing airtightness detection tool is further characterized in that the pipeline is connected with the airtight tool through an adapter, and a deflation valve is further arranged on the adapter.
The gas turbine casing airtightness detection tool provided by the invention is also characterized in that the adapter is a T-shaped adapter.
The gas turbine casing airtightness detection tool provided by the invention is also characterized in that the gas storage pressure of the gas tank is not less than 5 Mpa.
The gas turbine casing airtightness detection tool provided by the invention is also characterized in that the indication range of the pressure gauge is not less than 5 Mpa.
The gas turbine casing airtightness detection tool is further characterized in that the airtightness tool is connected with an air inlet/exhaust mounting seat or a lubricating oil inlet/outlet mounting seat on a casing to be detected, and a sealing rubber ring for sealing is arranged on the airtightness tool.
Another object of the present invention is to provide a method for detecting the airtightness of a casing of a gas turbine, said method using the tool according to any one of claims 1 to 6.
The invention also provides a gas turbine casing airtightness detection method, which is characterized by comprising the following steps:
s1: sealing the cavity of the gas turbine casing through an airtight tool;
s2: connecting the airtight tool with a gas tank through a pipeline;
s3: a pressure reducing valve, an adapter and a release valve are arranged on the pipeline;
s4: opening the gas tank, and increasing the pressure in the pipeline to a preset test pressure by adjusting a pressure reducing valve;
s5: and when the pressure reaches the preset pressure of the test, observing whether a pressure pointer on the pressure gauge is stable within 20min, if so, determining that the air tightness is qualified, and if not, determining that the air tightness is unqualified.
The gas turbine casing airtightness detection method provided by the invention is further characterized in that if the pressure in the pipeline in the S4 exceeds the preset test pressure, the pressure is relieved through the vent valve.
The gas turbine casing airtightness detection method provided by the invention is further characterized in that in S5, if the airtightness is not qualified, the whole airtight tool and the casing are placed in soapy water, whether bubbles emerge or not is observed, and the air leakage position is determined.
Compared with the prior art, the invention has the following beneficial effects:
the gas turbine airtightness test tool provided by the invention can be used for realizing airtightness tests of light and heavy gas turbine casings, the test operation is simple, the detection method improves the airtightness detection efficiency, and the air leakage position can be accurately determined.
Drawings
FIG. 1 is a schematic structural diagram of a gas turbine airtightness testing tool provided by the invention;
wherein, 1: a gas tank; 2: a pipeline; 3: a pressure reducing valve; 4, a pressure gauge; 5: a pipe joint; 6: a deflation valve; 7: airtight frock and machine casket are whole.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments, and the advantages and features of the invention will become more apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in FIG. 1, a gas turbine airtightness test tool is provided, and comprises: a gas tank for supplying gas for detecting airtightness of the gas turbine casing; the airtight tool is arranged on the casing and used for detecting airtightness; and the pipeline is connected with the gas tank and the airtight tool, wherein a pressure reducing valve for adjusting gas pressure and a pressure gauge for detecting the gas pressure in the pipeline are arranged on the pipeline. The pipeline with connect through the adapter between the airtight frock, still be equipped with the bleed valve on the adapter. The adapter is a T-shaped adapter. The gas storage pressure of the gas tank is not less than 5 Mpa. The indication range of the pressure gauge is not less than 5 Mpa. The airtight tool is connected with an air inlet/exhaust mounting seat or a lubricating oil inlet/outlet mounting seat on the casing to be tested, and a sealing rubber ring for sealing is arranged on the airtight tool. When the airtight tool is installed on the casing, the good sealing of the interface is ensured, and no gas leakage occurs.
The working process of the air tightness detection tool provided by the embodiment comprises the following steps:
s1: sealing the cavity of the gas turbine casing through an airtight tool;
s2: connecting the airtight tool with a gas tank through a pipeline;
s3: a pressure reducing valve, an adapter and a release valve are arranged on the pipeline;
s4: opening the gas tank, gradually raising the pressure in the pipeline to a test preset pressure by adjusting a pressure reducing valve, and releasing the pressure through a gas release valve if the pressure exceeds the test preset pressure;
s5: and when the pressure reaches the preset pressure of the test, observing whether a pressure pointer on the pressure gauge is stable within 20min, if so, determining that the air tightness is qualified, and if not, determining that the air tightness is unqualified.
S6: if the air tightness is not qualified, the air-tight tool and the casing are integrally placed in soapy water, whether bubbles emerge or not is observed, and the air leakage position is determined.
The air tightness detection tool provided by the embodiment can be used for air tightness tests of light and heavy gas turbine casings, is simple to operate, improves air tightness detection efficiency by the detection method, and can accurately determine air leakage positions.
It should also be noted that throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present invention. And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate contents of the embodiments of the present invention. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a gas turbine machine casket gas tightness detects frock which characterized in that, the frock includes:
a gas tank for supplying gas for detecting airtightness of the gas turbine casing;
the airtight tool is arranged on the casing and used for detecting airtightness; and
a pipeline connected with the gas tank and the airtight tool,
wherein the content of the first and second substances,
and the pipeline is provided with a pressure reducing valve for adjusting the gas pressure and a pressure gauge for detecting the gas pressure in the pipeline.
2. The gas turbine casing airtightness detection tool according to claim 1, wherein the pipeline is connected to the airtightness tool through an adapter, and a bleed valve is further provided on the adapter.
3. The gas turbine casing airtightness detection tool according to claim 2, wherein the adapter is a T-shaped adapter.
4. The gas turbine casing airtightness detection tool according to claim 1, wherein the gas storage pressure of the gas tank is not less than 5 Mpa.
5. The gas turbine casing airtightness detection tool according to claim 1, wherein the pressure gauge has a range of not less than 5 Mpa.
6. The gas turbine casing airtightness detection tool according to claim 1, wherein the airtightness tool is connected to an intake/exhaust mount base or a lubricating oil intake/outlet mount base on the casing to be detected, and a sealing rubber ring for sealing is provided on the airtightness tool.
7. A method for detecting the airtightness of a casing of a gas turbine, which uses the tool according to any one of claims 1 to 6.
8. The gas turbine casing airtightness detection method according to claim 7, comprising the steps of:
s1: sealing the cavity of the gas turbine casing through an airtight tool;
s2: connecting the airtight tool with a gas tank through a pipeline;
s3: a pressure reducing valve, an adapter and a release valve are arranged on the pipeline;
s4: opening the gas tank, and increasing the pressure in the pipeline to a preset test pressure by adjusting a pressure reducing valve;
s5: and when the pressure reaches the preset pressure of the test, observing whether a pressure pointer on the pressure gauge is stable within 20min, if so, determining that the air tightness is qualified, and if not, determining that the air tightness is unqualified.
9. The method for detecting the airtightness of the gas turbine casing according to claim 8, wherein the pressure in the pipeline in S4 is relieved by a bleed valve if the pressure exceeds a preset test pressure.
10. The method for detecting the airtightness of the gas turbine casing according to claim 8, wherein in step S5, if the airtightness is not satisfactory, the airtight fixture and the casing are entirely placed in soapy water, and a position of an air leakage is determined by observing whether or not air bubbles are emitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182773.8A CN112161760A (en) | 2020-10-29 | 2020-10-29 | Gas turbine casing airtightness detection tool and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182773.8A CN112161760A (en) | 2020-10-29 | 2020-10-29 | Gas turbine casing airtightness detection tool and detection method |
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| Publication Number | Publication Date |
|---|---|
| CN112161760A true CN112161760A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011182773.8A Pending CN112161760A (en) | 2020-10-29 | 2020-10-29 | Gas turbine casing airtightness detection tool and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310634A (en) * | 2021-05-20 | 2021-08-27 | 青岛中科国晟动力科技有限公司 | Method and assembly for detecting airtightness of casing of gas turbine |
| CN114001873A (en) * | 2021-10-18 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Air tightness inspection integrated equipment and detection method for aircraft anti-icing and rain-removing system |
-
2020
- 2020-10-29 CN CN202011182773.8A patent/CN112161760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310634A (en) * | 2021-05-20 | 2021-08-27 | 青岛中科国晟动力科技有限公司 | Method and assembly for detecting airtightness of casing of gas turbine |
| CN114001873A (en) * | 2021-10-18 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Air tightness inspection integrated equipment and detection method for aircraft anti-icing and rain-removing system |
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