CN114034449A - Device and method for checking tightness of gas inlet valve - Google Patents
Device and method for checking tightness of gas inlet valve Download PDFInfo
- Publication number
- CN114034449A CN114034449A CN202111286234.3A CN202111286234A CN114034449A CN 114034449 A CN114034449 A CN 114034449A CN 202111286234 A CN202111286234 A CN 202111286234A CN 114034449 A CN114034449 A CN 114034449A
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- Prior art keywords
- inlet valve
- compressed air
- lubricating oil
- gas inlet
- storage unit
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000010687 lubricating oil Substances 0.000 claims abstract description 36
- 239000003921 oil Substances 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000007689 inspection Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000008676 import Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- G01M3/2876—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 valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A device and method for checking the tightness of a gas inlet valve, regard compressed air as the power supply, press the lubricating oil in the checking device of the tightness into the gas inlet valve, through observing the change of the lubricating oil liquid level in the checking device of the tightness in the scheduled time, realize the accurate quantitative judgement to the sealing performance of the gas inlet valve; the leakproofness inspection device includes compressed air connecting pipe, oil storage unit and admission valve connecting pipe, and the oil storage unit is the leakproofness container for hold the lubricating oil, and the import of this oil storage unit is passed through the compressed air connecting pipe and is connected with the compressed air supply, and the export is passed through the admission valve connecting pipe and is connected with the gas admission valve, is equipped with the scale that is used for marking inside lubricating oil liquid level on the oil storage unit. The method is convenient to operate, can visually and quantitatively and accurately evaluate the tightness of the gas inlet valve, reduces the detection period and cost, and improves the maintenance efficiency.
Description
Technical Field
The invention relates to detection of parts of a dual-fuel diesel engine, in particular to a device and a method for checking the tightness of a gas inlet valve, and belongs to the technical field of marine diesel engine manufacturing.
Background
The gas air inlet valve is used as a key part of the diesel engine for the dual-fuel ship, the reliability and the stability of the gas air inlet valve directly influence the performance and the safety of a main engine, wherein the sealing performance of the gas air inlet valve is the first of all the performances, and the gas air inlet valve is required to be kept in a completely sealed state when being closed, so that the danger caused by gas leakage is avoided. The traditional tightness inspection method of the gas inlet valve is to coat soapy water around the sealing surface, and judge the tightness by inspecting whether soap bubbles are generated around the sealing surface after the gas inlet valve is pressurized. Although the method is intuitive, the sealing performance cannot be checked and quantitatively judged for a long time, and erroneous judgment is easily caused by observation of a human eye alone.
Disclosure of Invention
The invention aims to solve the problems of the existing gas inlet valve tightness checking method and provide a gas inlet valve tightness checking device and method, which can accurately and quantitatively judge the tightness of the gas inlet valve and achieve the effects of simple operation and efficiency improvement.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a leakproofness inspection device for gas admission valve, includes compressed air connecting pipe, oil storage unit and admission valve connecting pipe, the oil storage unit is the leakproofness container for hold the lubricating oil, the import of this oil storage unit is passed through the compressed air connecting pipe is connected with the compressed air supply, and the export is passed through the admission valve connecting pipe with the gas admission valve is connected, be equipped with the scale that is used for marking inside lubricating oil liquid level on the oil storage unit.
Furthermore, the compressed air connecting pipe and the air inlet valve connecting pipe are hoses.
The other technical scheme of the invention is as follows:
a method for checking the tightness of a gas inlet valve, which is realized by adopting the device, is characterized in that: compressed air is used as a power source, lubricating oil in the tightness inspection device is pressed into the gas inlet valve, and accurate quantitative judgment on the sealing performance of the gas inlet valve is realized by observing the change of the liquid level of the lubricating oil in the tightness inspection device within preset time.
Further, the tightness inspection method comprises the following specific steps:
1) connecting the oil storage unit to the gas inlet valve through the inlet valve connecting pipe, filling lubricating oil into the oil storage unit, connecting the oil storage unit to a compressed air source through the compressed air connecting pipe, and recording an initial lubricating oil liquid level value;
2) opening a compressed air source, pressing the lubricating oil in the oil storage unit into the gas inlet valve through compressed air, keeping the compressed air continuously input within a preset time period, stopping the compressed air input when the preset time period is over, and recording the final lubricating oil liquid level value;
3) and calculating the change value of the lubricating oil in a preset time period according to the initial lubricating oil liquid level value and the final lubricating oil liquid level value, comparing the change value with a standard value, and quantitatively evaluating and judging the tightness of the gas inlet valve.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the invention can intuitively carry out quantitative and accurate evaluation on the sealing performance of the gas inlet valve;
2. the gas inlet valve sealing device is convenient to operate, the sealing performance of the gas inlet valve can be directly monitored under the condition that the main machine gas inlet valve is not disassembled, and the detection period and the cost are reduced;
3. the maintenance cost is reduced, and the maintenance efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the installation of the present invention.
Detailed Description
The invention replaces the traditional method for checking the air tightness by soap bubbles, and adopts an air tightness checking device capable of measuring leakage amount to realize quantitative judgment on the air tightness of the gas inlet valve.
The present invention will be described in further detail with reference to the attached drawings, but the scope of the present invention should not be limited thereto.
Referring to fig. 1, a tightness inspection apparatus for a gas inlet valve is shown, including a compressed air connection pipe 1, an oil storage unit 2, and an inlet valve connection pipe 3.
The oil storage unit 2 is a sealed container and is used for containing lubricating oil; the inlet of the oil storage unit 2 is connected with a compressed air source through the compressed air connecting pipe 1, and the outlet of the oil storage unit is connected with the gas inlet valve through the gas inlet valve connecting pipe 3. And scales for marking the liquid level of the internal lubricating oil are arranged on the oil storage unit 2. The compressed air connecting pipe 1 and the air inlet valve connecting pipe 3 are both hoses.
Referring to fig. 2, in the method for checking the sealing performance of the gas inlet valve according to the present invention, compressed air is used as a power source to press the lubricant in the sealing performance checking device 02 into the gas inlet valve 01, and the change of the level of the lubricant in the sealing performance checking device 02 is observed for a predetermined time, so that the sealing performance of the gas inlet valve 01 is accurately and quantitatively determined.
The tightness inspection method comprises the following specific steps:
1) and connecting the oil storage unit 2 to the gas inlet valve 01 through the inlet valve connecting pipe 3, filling lubricating oil into the oil storage unit 2, connecting the oil storage unit 2 to a compressed air source through the compressed air connecting pipe 1, and recording an initial lubricating oil liquid level value.
2) And opening a compressed air source, pressing the lubricating oil in the oil storage unit 2 into the gas inlet valve 01 through compressed air, keeping the compressed air continuously input within a preset time period, stopping the compressed air input when the preset time period is over, and recording the final lubricating oil liquid level value.
3) And calculating the change value of the lubricating oil (namely the leakage amount of the lubricating oil) in a preset time period according to the initial lubricating oil liquid level value and the final lubricating oil liquid level value, comparing the change value with a standard value, and quantitatively evaluating and judging the tightness of the gas inlet valve 01.
The foregoing is illustrative of the principles and features of the present invention, and is not to be construed as limiting the scope of the invention, which is to be construed as broadly as the appended claims.
Claims (4)
1. A tightness inspection device for a gas inlet valve, characterized in that: the leakproofness inspection device include compressed air connecting pipe, oil storage unit and admission valve connecting pipe, the oil storage unit is the leakproofness container for hold the lubricating oil, the import of this oil storage unit is passed through the compressed air connecting pipe is connected with the compressed air supply, and the export passes through the admission valve connecting pipe with the gas admission valve is connected, be equipped with the scale that is used for marking inside lubricating oil liquid level on the oil storage unit.
2. The tightness inspection device according to claim 1, wherein: the compressed air connecting pipe and the air inlet valve connecting pipe are hoses.
3. A tightness checking method for a gas inlet valve, implemented with the device according to claim 1, characterized in that: compressed air is used as a power source, lubricating oil in the tightness inspection device is pressed into the gas inlet valve, and accurate quantitative judgment on the sealing performance of the gas inlet valve is realized by observing the change of the liquid level of the lubricating oil in the tightness inspection device within preset time.
4. The tightness inspection method according to claim 3, characterized in that: the tightness inspection method comprises the following specific steps:
1) connecting the oil storage unit to the gas inlet valve through the inlet valve connecting pipe, filling lubricating oil into the oil storage unit, connecting the oil storage unit to a compressed air source through the compressed air connecting pipe, and recording an initial lubricating oil liquid level value;
2) opening a compressed air source, pressing the lubricating oil in the oil storage unit into the gas inlet valve through compressed air, keeping the compressed air continuously input within a preset time period, stopping the compressed air input when the preset time period is over, and recording the final lubricating oil liquid level value;
3) and calculating the change value of the lubricating oil in a preset time period according to the initial lubricating oil liquid level value and the final lubricating oil liquid level value, comparing the change value with a standard value, and quantitatively evaluating and judging the tightness of the gas inlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286234.3A CN114034449A (en) | 2021-11-02 | 2021-11-02 | Device and method for checking tightness of gas inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286234.3A CN114034449A (en) | 2021-11-02 | 2021-11-02 | Device and method for checking tightness of gas inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114034449A true CN114034449A (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111286234.3A Pending CN114034449A (en) | 2021-11-02 | 2021-11-02 | Device and method for checking tightness of gas inlet valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN114034449A (en) |
Citations (11)
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|---|---|---|---|---|
| CN2886538Y (en) * | 2006-04-18 | 2007-04-04 | 天津市石化通用机械研究所 | Computer detector for multi-path valve |
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-
2021
- 2021-11-02 CN CN202111286234.3A patent/CN114034449A/en active Pending
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| JP6027707B1 (en) * | 2015-09-04 | 2016-11-16 | トヨタすまいるライフ株式会社 | Sealability inspection device |
| CN207662563U (en) * | 2017-12-12 | 2018-07-27 | 苏州富强科技有限公司 | A kind of watertightness test device |
| CN109000861A (en) * | 2018-05-31 | 2018-12-14 | 沪东中华造船(集团)有限公司 | A kind of ship stern sealing pressure oil test method |
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| CN209131925U (en) * | 2018-10-31 | 2019-07-19 | 上海沪东造船油嘴油泵有限公司 | Blow down valve performance testing tool |
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