CN114838875A - Engine oil duct leakage testing device and method - Google Patents
Engine oil duct leakage testing device and method Download PDFInfo
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- CN114838875A CN114838875A CN202210434432.8A CN202210434432A CN114838875A CN 114838875 A CN114838875 A CN 114838875A CN 202210434432 A CN202210434432 A CN 202210434432A CN 114838875 A CN114838875 A CN 114838875A
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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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses an engine oil duct leakage testing device and method, and belongs to the technical field of sealing quality detection. The engine oil duct leakage testing device comprises a high-pressure-resistant plugging tool, an air supercharging device, a high-pressure leakage testing instrument and an inflatable plugging tool, wherein the high-pressure-resistant plugging tool is plugged on an oil hole of a workpiece; the inlet end of the high-pressure leakage testing instrument is connected with the outlet end of the air supercharging device; two ends of the inflatable plugging tool are respectively connected with an oil duct of the workpiece and a high-pressure leakage test instrument; the air pressurization device, the high-pressure leakage test instrument and the inflation plugging tool can be used for filling air with preset test pressure into the oil duct, the high-pressure leakage test instrument can be used for inflating, maintaining pressure, testing and exhausting the oil duct, and the high-pressure leakage test instrument can be used for feeding back leakage values of the oil duct. The invention has simple structure and convenient operation, improves the leakage testing precision and accuracy and has better effect on finding the tiny leakage of the workpiece.
Description
Technical Field
The invention relates to the technical field of sealing quality detection of engines, in particular to an engine oil duct leakage testing device and method.
Background
On an engine assembly line, a large number of leakage tests are required to confirm whether the assembly quality of parts meets the design sealing requirements. The methods commonly used in the industry at present are an air leakage test method, an inflation and water immersion observation method and other special leakage test detection methods. Air leakage test method and aerify the observation method that soaks, the testing process is too complicated, and leakage test efficiency is not high, and is difficult to observe and judge the leakage position. A special leakage test method is CN103868659A, and the leakage test method for the copper bush tightness of the cylinder cover oil sprayer adopts a mode of judging leakage by starting and stopping a heavy diesel engine and observing the liquid level of an antifreeze solution. However, under the condition of special leakage test requirements, for example, when the sealing pressure is high and the sealing performance requirement is high, the common leakage test method cannot meet the requirements of leakage test precision and accuracy.
Disclosure of Invention
The invention aims to provide an engine oil way leakage testing device and method, which are simple in structure and convenient to operate, improve the leakage testing precision and accuracy and have a good effect on finding micro leakage of a workpiece.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, an engine oil passage leakage test device is provided, including:
the high-pressure-resistant plugging tool is plugged on an oil hole of the workpiece;
the inlet end of the air supercharging device is connected with an air source;
the inlet end of the high-pressure leakage testing instrument is connected with the outlet end of the air supercharging device;
the two ends of the inflation plugging tool are respectively connected with the oil duct of the workpiece and the high-pressure leakage test instrument;
the air pressurization device, the high-pressure leakage testing instrument and the inflation plugging tool can be used for filling air with preset testing pressure into the oil duct, the high-pressure leakage testing instrument can be used for inflating, maintaining pressure, testing and exhausting the oil duct, and the high-pressure leakage testing instrument can be used for feeding back leakage values of the oil duct.
Optionally, the preset test pressure is less than a pressure-resistant limit pressure of a sealing element of the oil passage and not less than a working pressure of the oil passage.
Optionally, the preset test pressure is not less than 0.5 MPa.
Optionally, the high pressure resistant plugging tool is made of a high pressure resistant material.
Optionally, the high pressure resistant plugging tool is made of a soft epoxy resin material.
Optionally, the inflation plugging tool comprises an inflation pipeline, and two ends of the inflation pipeline are connected to the oil duct and the high-pressure leakage test instrument.
Optionally, the maximum leak testing pressure of the high pressure leak testing instrument is greater than a preset testing pressure.
Optionally, a display screen for displaying the leakage test result is arranged on the high-voltage leakage test instrument.
Optionally, the maximum boost pressure of the air boost device is greater than a preset test pressure.
In one aspect, an engine oil passage leakage test method using the engine oil passage leakage test device includes:
the air supercharging device is respectively connected with an air source and a high-pressure leakage test instrument, and the high-pressure leakage test instrument is connected with a high-pressure-resistant plugging tool;
installing a high-pressure-resistant plugging tool on an oil hole of a workpiece, and installing an inflatable plugging tool on an oil duct of the workpiece;
filling air with preset test pressure into the oil duct through the air supercharging device, the high-pressure leakage test instrument and the inflation plugging tool;
operating the high-pressure leakage testing instrument to realize inflation, pressure maintaining, testing and exhaust of the oil duct;
the high-pressure leakage testing instrument feeds back the leakage value of the oil duct and judges a leakage testing result;
and the leakage test result meets the preset requirement, the operator passes the workpiece, and otherwise, the workpiece is checked for leakage and repaired.
Optionally, before filling the air at the preset test pressure into the oil passage, the method further includes:
and determining the preset test pressure of the oil passage.
The invention has the beneficial effects that:
according to the engine oil duct leakage testing device and method, the oil duct is operated by operating the high-pressure leakage testing instrument, the leakage value of the oil duct is fed back by the high-pressure leakage testing instrument, and the device is simple in structure and convenient to operate; specifically, the reasonable air with preset test pressure can be set according to the oil duct high-pressure test requirement, reasonable test parameters are set through a high-pressure leakage test instrument, the test pressure is greater than or equal to the working pressure, the test environment is strict with the working environment, the sensitivity of the test medium is higher than that of the working medium, the tightness of the oil duct is tested under higher test conditions, and therefore the leakage test effect is ensured. For oil duct leakage test with higher preset test pressure requirement and extremely high sealing requirement, the air supercharging device provides air of the preset test pressure for charging the supercharged air into the oil duct, so that the oil duct leakage test detection precision is improved, the leakage test detection accuracy is met, the assembly quality of an engine can be effectively ensured, the leakage is reduced, and the sealing reliability of the engine is improved. The testing method has a good effect on finding the micro leakage of the workpiece, and has an obvious effect on ensuring the sealing life of the oil duct.
Drawings
FIG. 1 is a schematic structural view of an engine oil passage leak testing device according to an embodiment of the present invention;
fig. 2 is a flowchart of an engine oil passage leak testing method according to an embodiment of the present invention.
In the figure:
100. a workpiece; 1. high pressure resistant plugging tooling; 2. an air supercharging device; 3. a high pressure leak tester; 4. aerify shutoff frock.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the embodiment provides an engine oil duct leakage testing device, which includes a high pressure resistant plugging tool 1, an air supercharging device 2, a high pressure leakage testing instrument 3 and an inflation plugging tool 4, specifically, the high pressure resistant plugging tool 1 is plugged on an oil hole of a workpiece 100; the inlet end of the air supercharging device 2 is connected with an air source; the inlet end of the high-pressure leakage testing instrument 3 is connected with the outlet end of the air supercharging device 2; two ends of the inflatable plugging tool 4 are respectively connected with the oil duct of the workpiece 100 and the high-pressure leakage test instrument 3; the air of presetting test pressure can be filled into the oil duct through the air supercharging device 2, the high-pressure leakage testing instrument 3 and the inflation plugging tool 4, the high-pressure leakage testing instrument 3 can inflate, maintain pressure, test and exhaust the oil duct, and the high-pressure leakage testing instrument 3 can feed back the leakage value of the oil duct.
Before testing, an inflation plugging tool 4, a high-pressure leakage test instrument 3, an air supercharging device 2 and an air source are sequentially connected, the high-pressure resistant plugging tool 1 is plugged on an oil hole of the workpiece 100 to avoid air leakage, and the inflation plugging tool 4 is connected on an oil duct of the workpiece 100; during testing, air with preset testing pressure is filled into the oil duct through the air supercharging device 2, the high-pressure leakage testing instrument 3 and the inflation plugging tool 4; then, the oil duct is inflated, pressure-maintaining, tested and exhausted through a high-pressure leakage tester 3; and finally, the high-pressure leakage testing instrument 3 feeds back the leakage value of the oil passage.
The oil duct is operated by operating the high-pressure leakage testing instrument 3, and the leakage numerical value of the oil duct is fed back by the high-pressure leakage testing instrument 3, so that the structure is simple and the operation is convenient; specifically, can set up the air of reasonable test pressure of predetermineeing according to oil duct high pressure test requirement, set up reasonable test parameter through high pressure leak test instrument 3, realize test pressure more than or equal to operating pressure, test environment is strict in operational environment, and test medium sensitivity is higher than operating medium to the higher test condition tests oil duct leakproofness, thereby ensures the leakage test effect. For oil duct leakage test with higher preset test pressure requirement and extremely high sealing requirement, the air supercharging device 2 provides air with the preset test pressure for charging the supercharged air into the oil duct, so that the oil duct leakage test detection precision is improved, the leakage test detection accuracy is met, the assembly quality of the engine can be effectively ensured, the leakage is reduced, and the sealing reliability of the engine is improved. The testing method has a good effect on finding the micro leakage of the workpiece 100, and has an obvious effect on ensuring the service life of the oil duct seal.
Optionally, the preset test pressure is smaller than the pressure-resistant limit pressure of the sealing element of the oil duct, so that the sealing element is prevented from being damaged, and the preset test pressure is not smaller than the working pressure of the oil duct, so that the detection requirement is met, and the sealing reliability of the engine is ensured. Optionally, the preset test pressure is not less than 0.5 MPa.
Because the oil duct is filled with high-pressure air, optionally, the high-pressure-resistant plugging tool 1 is made of a high-pressure-resistant material, so that the high-pressure-resistant plugging tool 1 is guaranteed to be of a high-pressure-resistant structure, the oil duct can be reliably sealed under a high-pressure state, and the detection effect is improved. Preferably, the high pressure resistant plugging tool 1 is made of a soft epoxy resin material. Optionally, the high-pressure-resistant plugging tool 1 is hermetically connected to the workpiece 100, and the bearable plugging pressure is not less than 1MPa, and the specific fixing manner may refer to the prior art and is not described in detail.
Optionally, the inflation plugging tool 4 comprises an inflation pipeline, two ends of the inflation pipeline are connected to the oil duct and the high-pressure leakage test instrument 3, and the oil duct is inflated through the inflation pipeline. Specifically, the material and the fixed structure of the inflatable plugging tool 4 can adopt the same scheme as that of the high-pressure-resistant plugging tool 1, and the description is omitted.
Optionally, the maximum leak testing pressure of the high-pressure leak testing instrument 3 is greater than the preset testing pressure to meet the detection requirement. Optionally, a display screen for displaying the leakage test result is arranged on the high-voltage leakage test instrument 3, so that an operator can conveniently check the detection result. Specifically, the high-voltage leakage tester 3 is a conventional one, and is not described in detail.
Alternatively, the air booster device 2 is an air booster, and the maximum boost pressure thereof is greater than the preset test pressure to meet the test pressure requirement.
As shown in fig. 2, the present embodiment provides an engine oil passage leak testing method, using the engine oil passage leak testing device, including the following steps:
s1: the air supercharging device 2 is respectively connected with an air source and a high-pressure leakage testing instrument 3, and the high-pressure leakage testing instrument 3 is connected with the high-pressure-resistant plugging tool 1;
s2: installing a high-pressure-resistant plugging tool 1 on an oil hole of a workpiece 100, and installing an inflatable plugging tool 4 on an oil duct of the workpiece 100;
s3: air with preset test pressure is filled into the oil duct through the air supercharging device 2, the high-pressure leakage test instrument 3 and the inflation plugging tool 4;
s4: operating the high-pressure leakage tester 3 to realize inflation, pressure maintaining, testing and exhaust of the oil duct;
s5: the high-pressure leakage test instrument 3 feeds back the leakage value of the oil duct and judges a leakage test result;
s6: and (4) the leakage test result meets the preset requirement, the operator releases the workpiece 100, and otherwise, the workpiece 100 is checked for leakage and repaired.
The oil duct is operated by operating the high-pressure leakage testing instrument 3, and the leakage numerical value of the oil duct is fed back by the high-pressure leakage testing instrument 3, so that the structure is simple and the operation is convenient; specifically, the reasonable air with preset test pressure can be set according to the oil duct high-pressure test requirement, reasonable test parameters are set through the high-pressure leakage test instrument 3, the test pressure is greater than or equal to the working pressure, the test environment is strict with the working environment, the sensitivity of the test medium is higher than that of the working medium, the oil duct tightness is tested under higher test conditions, the oil duct leakage test detection precision is improved, the leakage test detection accuracy is met, the engine assembly quality can be effectively guaranteed, the leakage is reduced, and the engine sealing reliability is improved. The testing method has a good effect on finding the micro leakage of the workpiece 100, and has an obvious effect on ensuring the service life of the oil duct seal.
Optionally, before filling the preset test pressure air into the oil passage, the method further comprises:
s001: and determining the preset test pressure of the oil passage. According to the determined result, the pressure of the air charged into the air supercharging device 2 is adjusted in a targeted manner, and the test parameters of the high-pressure leakage test instrument 3 are preset, so that the special test requirements of different oil passages are met, and the applicability is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (11)
1. An engine oil duct leakage test device, characterized by comprising:
the high-pressure-resistant plugging tool (1) is plugged on an oil hole of a workpiece (100);
the inlet end of the air supercharging device (2) is connected to an air source;
the inlet end of the high-pressure leakage testing instrument (3) is connected to the outlet end of the air supercharging device (2);
the two ends of the inflatable plugging tool (4) are respectively connected with the oil duct of the workpiece (100) and the high-pressure leakage tester (3);
the air pressurization device (2), the high-pressure leakage testing instrument (3) and the inflation plugging tool (4) can be used for filling air with preset testing pressure into the oil duct, the high-pressure leakage testing instrument (3) can be used for inflating, maintaining pressure, testing and exhausting the oil duct, and the high-pressure leakage testing instrument (3) can feed back leakage values of the oil duct.
2. The engine oil passage leakage test device according to claim 1, wherein the preset test pressure is less than a pressure-resistant limit pressure of a seal of the oil passage and not less than a working pressure of the oil passage.
3. The engine oil passage leakage test device according to claim 2, wherein the preset test pressure is not less than 0.5 MPa.
4. The engine oil passage leakage test device according to claim 1, wherein the high pressure resistant plugging tool (1) is made of a high pressure resistant material.
5. The engine oil passage leakage test device according to claim 1, wherein the high pressure resistant plugging tool (1) is made of a soft epoxy resin material.
6. The engine oil passage leakage test device according to claim 1, wherein the inflation plugging tool (4) comprises an inflation pipeline, and two ends of the inflation pipeline are connected to the oil passage and the high-pressure leakage test instrument (3).
7. The engine oil passage leakage test device according to claim 1, wherein the maximum leakage test pressure of the high-pressure leakage test instrument (3) is greater than a preset test pressure.
8. The engine oil passage leakage test device according to claim 1, wherein a display screen for displaying a leakage test result is arranged on the high-pressure leakage test instrument (3).
9. The engine oil passage leakage test device according to claim 1, characterized in that the maximum supercharging pressure of the air supercharging device (2) is greater than a preset test pressure.
10. An engine oil passage leak testing method, characterized by using the engine oil passage leak testing device according to any one of claims 1 to 9, comprising:
the air supercharging device (2) is respectively connected with an air source and a high-pressure leakage testing instrument (3), and the high-pressure leakage testing instrument (3) is connected with the high-pressure-resistant plugging tool (1);
installing a high-pressure-resistant plugging tool (1) on an oil hole of a workpiece (100), and installing an inflatable plugging tool (4) on an oil passage of the workpiece (100);
air with preset test pressure is filled into the oil duct through the air supercharging device (2), the high-pressure leakage testing instrument (3) and the inflation plugging tool (4);
operating the high-pressure leakage tester (3) to realize inflation, pressure maintaining, testing and exhaust of the oil duct;
the high-pressure leakage tester (3) feeds back the leakage value of the oil duct and judges the leakage test result;
and the leakage test result meets the preset requirement, the operator releases the workpiece (100), and otherwise, the workpiece (100) is checked for leakage and repaired.
11. The engine oil gallery leak testing method according to claim 10, further comprising, before charging air at a preset test pressure into the oil gallery:
and determining the preset test pressure of the oil passage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210434432.8A CN114838875A (en) | 2022-04-24 | 2022-04-24 | Engine oil duct leakage testing device and method |
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| CN202210434432.8A CN114838875A (en) | 2022-04-24 | 2022-04-24 | Engine oil duct leakage testing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118824588A (en) * | 2024-09-20 | 2024-10-22 | 中核核电运行管理有限公司 | Device and method for detecting leakage of mechanical seal assembly |
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2022
- 2022-04-24 CN CN202210434432.8A patent/CN114838875A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118824588A (en) * | 2024-09-20 | 2024-10-22 | 中核核电运行管理有限公司 | Device and method for detecting leakage of mechanical seal assembly |
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