CN109029852B - Simple and convenient plugging hole leakage test method and tool - Google Patents
Simple and convenient plugging hole leakage test method and tool Download PDFInfo
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- CN109029852B CN109029852B CN201810845035.3A CN201810845035A CN109029852B CN 109029852 B CN109029852 B CN 109029852B CN 201810845035 A CN201810845035 A CN 201810845035A CN 109029852 B CN109029852 B CN 109029852B
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- 238000010998 test method Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 description 12
- 230000006978 adaptation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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
- G01M3/025—Details with respect to the testing of engines or engine parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pipe Accessories (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a simple plugging hole leakage test method, which comprises the steps of plugging a plugging hole of a cylinder cover by using a plugging piece, sealing an orifice of the plugging hole by using a tooling plate, arranging a quick-change connector capable of communicating an inner cavity of the plugging hole on the tooling plate, arranging an adjustable hydraulic device to be connected with the quick-change connector, and introducing a leakage test liquid from the quick-change connector to detect whether the plugging piece in the plugging hole is installed in a sealing manner. The invention also provides a tool for realizing the simple plugging hole leakage test method. The simple plugging hole leakage testing method and the simple tooling are simple, the leakage is tested in a way of leading in clean leakage testing liquid from the outer side of the plugging hole, the area where the leakage testing liquid contacts the cylinder cover is small, the pollution to the cylinder cover is very small, the pollution to the cylinder cover caused by the leakage testing from the inner side is avoided, and the investment required for putting in the re-cleaning equipment is reduced.
Description
Technical Field
The invention relates to the field of internal combustion engine assembly, in particular to a simple and convenient plugging hole leakage test method and a simple and convenient plugging hole leakage test tool.
Background
The water jacket cooling and oil-way lubricating system of the diesel engine cylinder cover is generally provided with a plugging piece which needs to be sealed, and leakage test is needed according to technical requirements after the plugging piece is installed. A phi 50 plugging piece hole in a cylinder head oil way lubricating system of a certain model is specially designed for solving the problem of short plates with insufficient stroke of production line equipment, and is required to be reinstalled and sealed after machining is finished, so that leakage of oil in the use process of a diesel engine is prevented, and leakage is required to be tested. The prior leakage test technical proposal is to blow in compressed air after sealing the plugging piece, sink into water, observe whether water bubbles are out and judge whether leakage exists; or after sealing, compressed air is introduced, and whether leakage occurs is judged by the leakage rate displayed by the leakage tester. Because the oil way system of the cylinder cover of the engine is all around, the positions needing sealing are many, for example, leakage test is performed after sealing according to the conventional method at present, and more complex equipment is needed to be input to meet the requirements. In addition, the method comprises the following process flows: finish machining of phi 50 plugging holes, detaching of a cylinder cover, final cleaning, steel ball loading, plugging sheet loading, plugging of the plugging holes at the rear end, oiling and warehousing, wherein the plugging sheets can be loaded after the steel balls are loaded at the orifice of the main oil duct, and then the plugging sheets can be tested. The cylinder cover is finally cleaned before leakage test, the cylinder cover meets the requirement of cleanliness before assembly, the cylinder cover is polluted if leakage test is performed according to a conventional method, the cleanliness can be guaranteed after re-cleaning, the cleaning machine is required to be put into for re-cleaning, and the investment is increased.
For the problem that the leakage of the whole cylinder cover is influenced only by the sealing of one hole, the method and the tool for testing the leakage of the plugging hole are particularly important.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a simple and convenient plugging hole leakage test method which is convenient for leakage test and has little pollution to a cylinder cover.
The invention aims at providing a tool for realizing a simple and convenient plugging hole leakage test method.
In order to achieve the first purpose, the invention provides a simple plugging hole leakage test method, which comprises plugging a plugging hole of a cylinder cover by using a plugging piece, sealing an orifice of the plugging hole by using a tooling plate, arranging a quick-change connector capable of communicating an inner cavity of the plugging hole on the tooling plate, arranging an adjustable hydraulic device to be connected with the quick-change connector, and introducing a leakage test liquid from the quick-change connector to detect whether the plugging piece in the plugging hole is sealed or not.
Further, the edge of the tooling plate is provided with a compression screw connected with the end face of the cylinder cover.
Furthermore, a positioning column matched with the hole wall of the cylinder cover plugging hole is arranged at the inner end of the tooling plate, and a sealing ring is arranged between the positioning column and the control of the cylinder cover plugging hole.
Furthermore, a chamfer structure is arranged at the orifice of the cylinder cover plugging piece hole, and the sealing ring is arranged between the chamfer structure and the positioning column.
As a further improvement, the quick-change connector is vertically inserted on the tooling plate, a limiting convex edge which is adaptive to the outer end face of the tooling plate is arranged on the quick-change connector, and the tooling plate is connected with the quick-change connector through a clamping and locking mechanism.
Still further, the block locking mechanism is including locating the inside wide outside narrow on the frock board with the mounting groove of quick change joint looks adaptation, the front end that the quick change connects is equipped with the stopper that radial outside protrusion set up, be equipped with on the mounting groove and supply the axial slot that the stopper passed through, the quick change connects can insert the mounting groove rotates and realizes the axial spacing.
In order to achieve the second purpose, the invention also provides a tool for realizing the simple plugging hole leakage test method, which comprises a plugging piece matched with the plugging hole of the cylinder cover and a tool plate which can be fixed on the end face of the cylinder cover and close the orifice of the plugging hole of the cylinder cover, wherein a quick-change connector communicated with the plugging hole of the cylinder cover is detachably arranged on the plugging hole of the cylinder cover, and the outer end of the quick-change connector is connected with an adjustable hydraulic device; the quick-change connector is vertically inserted on the tooling plate, a limiting convex edge which is adaptive to the outer end face of the tooling plate is arranged on the quick-change connector, and the tooling plate is connected with the quick-change connector through a clamping and locking mechanism.
Further, the edge of the tooling plate is provided with a compression screw connected with the end face of the cylinder cover.
Furthermore, a positioning column matched with the hole wall of the cylinder cover plugging hole is arranged at the inner end of the tooling plate, a sealing ring is arranged between the positioning column and the control of the cylinder cover plugging hole, a chamfering structure is arranged at the hole opening of the cylinder cover plugging hole, and the sealing ring is arranged between the chamfering structure and the positioning column.
As a further improvement, the clamping and locking mechanism comprises an installation groove which is arranged on the tooling plate and is internally wide and externally narrow and is matched with the quick-change connector, a limiting block which is arranged in a radially outwards protruding mode is arranged at the front end of the quick-change connector, an axial slot through which the limiting block passes is formed in the installation groove, and the quick-change connector can be inserted into the installation groove and rotated to achieve axial limiting.
Advantageous effects
Compared with the prior art, the simple and convenient plugging hole leakage test method and tool have the following beneficial effects:
(1) The leak test method only seals the part needing leak test, and the irrelevant part does not need to be sealed, so that more complex equipment is avoided, and the investment is reduced.
(2) The leak test method of the invention is to test the leak by leading clean leak test liquid from the outside of the plugging hole, the area of the leak test liquid contacting the cylinder cover is less, the pollution to the cylinder cover is extremely small, the pollution to the cylinder cover caused by leak test from the inside is avoided, and the investment required for putting in the re-cleaning equipment is reduced.
(3) The leak testing method is used for introducing leak testing liquid into a part to be tested, is prepared by water and DA202 cleaning liquid according to the proportion of 2.5% -5%, has little difference with the oil sub-volume used after the cylinder cover is installed, is less prone to leak out from a sealing body than gas molecules, and reduces the risk of cylinder cover scrapping caused by misjudgment of leakage.
(4) The leak testing tool disclosed by the invention is sealed by pressing after the sealing ring is contacted with the chamfer bevel edge of the plugging hole, solves the problem that the end face (with three oil grooves) of the pressing cylinder cover is not tightly sealed and is easy to leak, and is simple and easy to manufacture and convenient to operate.
Drawings
FIG. 1 is a structural cross-sectional view of a simple and convenient plugging hole leak testing method and tooling of the invention;
FIG. 2 is a schematic structural diagram of a simple and convenient plugging hole leak test method and tool of the invention.
In the figure: 1. a tooling plate; 2. a quick-change joint; 3. a compression screw; 4. plugging sheets; 5. a cylinder head; 6. positioning columns; 7. a seal ring; 8. limiting convex edges; 9. an adjustable hydraulic device; 10. a rubber tube; 11. and (5) testing leakage.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
The specific embodiments of the present invention are as follows: as shown in figures 1-2, the simple and convenient plugging hole leakage test method comprises the steps of plugging a plugging hole of a cylinder cover 5 by using a plugging piece 4, further arranging a tooling plate 1 to seal an orifice of the plugging hole, arranging a quick-change connector 2 capable of being communicated with an inner cavity of the plugging hole on the tooling plate 1, arranging an adjustable hydraulic device 9 to be connected with the quick-change connector 2, connecting the adjustable hydraulic device 9 with the quick-change connector 2 through a rubber tube 10, and introducing a plugging liquid 11 from the quick-change connector 2 to detect whether the plugging piece 4 in the plugging hole is in sealing installation, wherein the plugging liquid 11 only contacts with small local areas such as the outer side of the plugging piece 4, the orifice of the plugging hole and the like, so that the inside of the cylinder cover cannot be polluted, and the cleaning is not needed.
In this embodiment, the edge of tooling plate 1 is equipped with the hold-down screw 3 that is connected with the terminal surface of cylinder head 5, compresses tightly tooling plate 1 on the cylinder head 5 terminal surface through hold-down screw 3, connects closely, prevents that liquid from leaking, utilizes the screw on the cylinder head 5 terminal surface moreover, connects conveniently, swiftly.
In this embodiment, the inner of frock board 1 is equipped with the reference column 6 with the pore wall looks adaptation of cylinder head piece hole, is equipped with sealing washer 7 between the control of reference column 6 and cylinder head piece hole, makes frock board 1 and cylinder head 5 fix a position fast through reference column 6, makes frock board 1 and cylinder head piece hole's connection inseparabler moreover, and the leakproofness is good, reduces the area that leak testing liquid 11 pollutes the piece hole.
In this embodiment, set up the chamfer structure in the drill way department of the stifled piece hole of cylinder head, sealing washer 7 installs between chamfer structure and reference column 6, makes frock board 1 compress tightly sealing washer 7 in the drill way department of stifled piece hole, and sealing washer 7 is big with the drill way area of stifled piece hole, and is sealed effectual.
In this embodiment, the quick-change connector 2 is vertically inserted on the tooling plate 1, the quick-change connector 2 is provided with a limiting convex edge 8 adapted to the outer end surface of the tooling plate 1, and the tooling plate 1 is connected with the quick-change connector 2 through a clamping and locking mechanism. The block locking mechanism is including locating the wide mounting groove of outer narrow and quick change joint 2 looks adaptation in the interior on frock board 1, and the front end of quick change joint 2 is equipped with the stopper that radial outside protrusion set up, is equipped with the axial slot that supplies the stopper to pass through on the mounting groove, and quick change joint 2 can insert the mounting groove and rotate and realize axial spacing, and quick change joint 2 and frock board 1 quick connect, and the front end of quick change joint 2 is equipped with the circular arc sealed face with the mounting groove looks adaptation moreover, prevents to take place to leak between quick change joint 2 and the frock board 1.
The leak test method only seals the part needing leak test, and the irrelevant part does not need to be sealed, so that more complex equipment is avoided, and the investment is reduced; in addition, the leak testing method of the invention is used for leak testing in a way of leading clean leak testing liquid from the outer side of the plugging hole, the area where the leak testing liquid contacts the cylinder cover is less, the pollution to the cylinder cover is extremely small, the pollution to the cylinder cover caused by leak testing from the inner side is avoided, and thus the investment required for putting in the re-cleaning equipment is reduced; in addition, the leak testing method is used for introducing leak testing liquid at a leak testing position, which is liquid prepared by water and DA202 cleaning liquid according to the proportion of 2.5% -5%, has little difference with the oil sub-volume used after the cylinder cover is installed, is less prone to leak than gas molecules in a sealing body, and reduces the risk of cylinder cover scrapping caused by misjudgment of leakage; finally, the leak testing tool disclosed by the invention is sealed by pressing after the sealing ring is contacted with the bevel edge of the chamfer of the plugging hole, so that the problem that the end face (with three oil grooves) of the cylinder cover is not tightly sealed and is easy to leak is solved, the tool is simple and easy to manufacture, and the operation is convenient.
In the embodiment, the tool for realizing the simple plugging hole leakage test method comprises a plugging piece 4 matched with a cylinder cover plugging hole and a tool plate 1 which can be fixed on the end face of a cylinder cover 5 and seals the orifice of the cylinder cover plugging hole, wherein the plugging piece 4 is bowl-shaped, the periphery of the plugging piece 4 is tightly attached to the wall of the plugging piece hole, a quick-change connector 2 communicated with the cylinder cover plugging hole is detachably arranged on the cylinder cover plugging hole, and the outer end of the quick-change connector 2 is connected with an adjustable hydraulic device 9; the quick-change connector 2 is vertically inserted on the tooling plate 1, the quick-change connector 2 is provided with a limiting convex edge 8 which is adaptive to the outer end face of the tooling plate 1, and the tooling plate 1 is connected with the quick-change connector 2 through a clamping locking mechanism. The edge of the tooling plate 1 is provided with a compression screw 3 connected with the end face of the cylinder head 5.
In the embodiment, a positioning column 6 matched with the hole wall of the cylinder cover plugging hole is arranged at the inner end of the tooling plate 1, a sealing ring 7 is arranged between the positioning column 6 and the control of the cylinder cover plugging hole, a chamfer structure is arranged at the hole opening of the cylinder cover plugging hole, and the sealing ring 7 is arranged between the chamfer structure and the positioning column 6.
In this embodiment, the block locking mechanism is including locating the wide mounting groove that outside and inside is narrow on frock board 1 with quick change joint 2 looks adaptation, and the front end of quick change joint 2 is equipped with the stopper that radially outwards protrudes the setting, is equipped with the axial slot that supplies the stopper to pass through on the mounting groove, and quick change joint 2 can insert the mounting groove and rotate and realize the axial spacing.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (6)
1. A simple plugging hole leakage test method comprises plugging a plugging hole of a cylinder cover (5) by using a plugging piece (4), and is characterized in that a tooling plate (1) is further arranged to seal an orifice of the plugging hole, a quick-change connector (2) capable of communicating an inner cavity of the plugging hole is arranged on the tooling plate (1), an adjustable hydraulic device (9) is arranged to be connected with the quick-change connector (2), and a leakage test liquid (11) is introduced from the quick-change connector (2) to detect whether the plugging piece (4) in the plugging hole is sealed and installed;
The quick-change connector (2) is vertically inserted on the tooling plate (1), a limiting convex edge (8) which is adaptive to the outer end face of the tooling plate (1) is arranged on the quick-change connector (2), and the tooling plate (1) is connected with the quick-change connector (2) through a clamping locking mechanism;
The clamping locking mechanism comprises an installation groove which is arranged on the tooling plate (1) and is internally wide and externally narrow and is matched with the quick-change connector (2), a limiting block which is radially and outwards arranged in a protruding mode is arranged at the front end of the quick-change connector (2), an axial slot through which the limiting block passes is formed in the installation groove, and the quick-change connector (2) can be inserted into the installation groove and rotated to achieve axial limiting;
A positioning column (6) matched with the hole wall of the cylinder cover plugging hole is arranged at the inner end of the tooling plate (1), and a sealing ring (7) is arranged between the positioning column (6) and a gap of the cylinder cover plugging hole;
A chamfer structure is arranged at the orifice of the cylinder cover plugging hole, and the sealing ring (7) is arranged between the chamfer structure and the positioning column (6);
The leak test liquid (11) is prepared from water and DA202 cleaning liquid according to the proportion of 2.5% -5%.
2. The simple and convenient plugging hole leakage testing method according to claim 1 is characterized in that the edge of the tooling plate (1) is provided with a compression screw (3) connected with the end face of the cylinder cover (5).
3. A tool for realizing the simple and convenient plugging hole leakage test method according to claim 1, which is characterized by comprising a plugging piece (4) matched with a cylinder cover plugging hole and a tool plate (1) capable of being fixed on the end face of a cylinder cover (5) and closing the orifice of the cylinder cover plugging hole, wherein a quick-change connector (2) communicated with the cylinder cover plugging hole is detachably arranged on the cylinder cover plugging hole, and the outer end of the quick-change connector (2) is connected with an adjustable hydraulic device (9); the quick-change connector (2) is vertically inserted on the tooling plate (1), a limiting convex edge (8) which is adaptive to the outer end face of the tooling plate (1) is arranged on the quick-change connector (2), and the tooling plate (1) is connected with the quick-change connector (2) through a clamping and locking mechanism.
4. A tool according to claim 3, characterized in that the edge of the tool plate (1) is provided with a compression screw (3) connected to the end face of the cylinder head (5).
5. The tool according to claim 4, wherein a positioning column (6) matched with the hole wall of the cylinder cover plugging hole is arranged at the inner end of the tool plate (1), a sealing ring (7) is arranged between the positioning column (6) and a gap of the cylinder cover plugging hole, a chamfering structure is arranged at the hole opening of the cylinder cover plugging hole, and the sealing ring (7) is arranged between the chamfering structure and the positioning column (6).
6. The fixture according to claim 3, 4 or 5, wherein the clamping and locking mechanism comprises an installation groove which is arranged on the fixture plate (1) and is wide in the inside and narrow in the outside and is matched with the quick-change connector (2), a limiting block which is arranged in a radially outwards protruding mode is arranged at the front end of the quick-change connector (2), an axial slot through which the limiting block passes is formed in the installation groove, and the quick-change connector (2) can be inserted into the installation groove and rotated to achieve axial limiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845035.3A CN109029852B (en) | 2018-07-27 | 2018-07-27 | Simple and convenient plugging hole leakage test method and tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810845035.3A CN109029852B (en) | 2018-07-27 | 2018-07-27 | Simple and convenient plugging hole leakage test method and tool |
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| CN109029852A CN109029852A (en) | 2018-12-18 |
| CN109029852B true CN109029852B (en) | 2024-05-03 |
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| CN201810845035.3A Active CN109029852B (en) | 2018-07-27 | 2018-07-27 | Simple and convenient plugging hole leakage test method and tool |
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| 汽液相平衡计算方法的研究进展;陶玉林;张雷;伍申怀;;化学工程与装备;20080515(第05期);全文 * |
| 着色法检漏工艺及应用;徐邦文;;变压器;20070908(第09期);全文 * |
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| CN109029852A (en) | 2018-12-18 |
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