CN114354101A - Double-loop radiator leakage detection method - Google Patents
Double-loop radiator leakage detection method Download PDFInfo
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- CN114354101A CN114354101A CN202111556979.7A CN202111556979A CN114354101A CN 114354101 A CN114354101 A CN 114354101A CN 202111556979 A CN202111556979 A CN 202111556979A CN 114354101 A CN114354101 A CN 114354101A
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 230000017525 heat dissipation Effects 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 238000005086 pumping Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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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
- G01M3/32—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 containers, e.g. radiators
- G01M3/3227—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 containers, e.g. radiators for radiators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a double-loop radiator leak detection method, which comprises a dry detection tool; the dry inspection tool comprises a tool bottom plate; the middle part of the tool bottom plate is used for fixing the double-loop radiator, and a positioning stop block for positioning the double-loop radiator, a fixed stop block for fixing the double-loop radiator and a plurality of pressing cylinders for pressing the double-loop radiator are respectively arranged on two sides of the position of the double-loop radiator to be installed, corresponding to the double-loop radiator; the outer sides of the two fixed stop blocks correspond to two pipe orifices of the low-temperature heat dissipation part of the double-loop radiator, and the two pipe orifices of the high-temperature heat dissipation part are respectively provided with a first external expansion plug, a second external expansion plug, a third external expansion plug and a side sealing plug, so that the double-loop radiator is communicated with the detection loop; and the double-loop radiator is subjected to leak detection by controlling a detection loop to obtain the feedback of the air flow sensor and the leak detector. The application of the invention aims at realizing high-efficiency air tightness detection of the radiator adopting the double-loop design.
Description
Technical Field
The invention relates to the technical field of radiator detection, in particular to a double-loop radiator leakage detection method.
Background
As the demand for automobiles continues to increase, a wide variety of configurations are being added to automobiles. It is a great challenge to the layout space of the automobile.
Therefore, the original low-temperature radiator and the original high-temperature radiator are integrated into the double-loop radiator, the design ensures the original heat dissipation function, greatly reduces the volume of the radiator, increases the space for arranging the whole vehicle, reduces the production cost and improves the production efficiency.
However, in practical application, the dual-loop radiator also has the characteristics of high production and manufacturing requirements, high leak detection difficulty and the like.
Therefore, how to satisfy the high-efficiency leak detection of double-loop heat dissipation becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the present invention provides a leak detection method for a dual-circuit heat sink, which aims to achieve efficient air tightness detection for a heat sink adopting a dual-circuit design.
In order to achieve the purpose, the invention discloses a double-loop radiator leak detection method, which comprises a dry detection tool; the dry inspection tool comprises a tool bottom plate.
The middle part of the tool bottom plate is used for fixing a double-loop radiator, and two sides of the position of the double-loop radiator to be installed, which correspond to the double-loop radiator, are respectively provided with a positioning stop block for positioning the double-loop radiator, a fixed stop block for fixing the double-loop radiator and a plurality of pressing cylinders for pressing the double-loop radiator;
two pipe orifices of the low-temperature heat dissipation part of the double-loop radiator corresponding to the outer sides of the two fixed stop blocks and two pipe orifices of the high-temperature heat dissipation part are respectively provided with a first external expansion plug, a second external expansion plug, a third external expansion plug and a side sealing plug, and the double-loop radiator is communicated with a detection loop;
the detection loop is a pneumatic loop and comprises a first air valve, a second air valve, a third air valve, a fourth air valve, a fifth air valve, a sixth air valve, an exhaust valve, an air flow sensor, a standard leak hole test sample and a leak detector;
the two pipe orifices of the high-temperature heat dissipation part are respectively connected with the sixth air valve and the second air valve;
the two pipe orifices of the low-temperature heat dissipation part are respectively connected with the third air valve and the fourth air valve;
the other end of the fourth air valve is connected with an air compressor, and the air flow sensor is arranged between the fourth air valve and the air compressor;
the other end of the second air valve and the other end of the third air valve are connected in parallel and then connected with the leak detector;
a pipeline between the fourth air valve and the air flow sensor is connected with the standard leakage sensor in parallel between a pipeline between the second air valve and the third air valve which are connected in parallel and then connected with the leakage detector, and the first air valve and the fifth air valve are respectively arranged at two ends of the standard leakage sensor;
the second air valve and the third air valve are connected in parallel and then the exhaust valve is arranged on a pipeline connected with the leak detector;
the leak detection process comprises the following steps:
Preferably, the tool bottom plate is also provided with a marking mechanism; the marking mechanism is used for marking the double-loop radiator which passes the test.
Preferably, the air flow sensor needs to be calibrated before leak detection, and the specific method is as follows:
opening the first air valve and the fifth air valve; closing the second, third, fourth, sixth and exhaust valves.
The invention has the beneficial effects that:
the application of the invention aims at realizing high-efficiency air tightness detection of the radiator adopting the double-loop design.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a tooling bottom plate according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a detection circuit according to an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 and 2, the leak detection method for the double-loop radiator comprises a dry detection tool;
the dry detection tool comprises a tool bottom plate 10;
the middle part of the tool bottom plate 10 is used for fixing the double-loop radiator, and two sides of the position of the double-loop radiator to be installed, which correspond to the double-loop radiator, are respectively provided with a positioning stop block 6 for positioning the double-loop radiator, a fixed stop block 7 for fixing the double-loop radiator and a plurality of pressing cylinders 8 for pressing the double-loop radiator;
the outer sides of the two fixed stop blocks 7 correspond to two pipe orifices of the low-temperature radiating part 21 of the double-loop radiator and two pipe orifices of the high-temperature radiating part 22 are respectively provided with a first external expansion plug 1, a second external expansion plug 2, a third external expansion plug 4 and a side sealing plug 5, and the double-loop radiator is communicated with a detection loop;
the detection loop is a pneumatic loop and comprises a first air valve 11, a second air valve 12, a third air valve 13, a fourth air valve 14, a fifth air valve 15, a sixth air valve 16, an exhaust valve 17, an air flow sensor 18, a standard leak hole test sample 19 and a leak detector 20;
the leakage detector is an existing instrument for measuring the leakage rate of an object, a pressure difference method, a flow method, a balance method and a parameter method are generally adopted for leakage test, and the invention can adopt an innomatec brand LTC-802 type leakage detector.
Two pipe orifices of the high-temperature heat dissipation part 22 are respectively connected with the sixth air valve 16 and the second air valve 12;
two pipe orifices of the low-temperature heat dissipation part 21 are respectively connected with the third air valve 13 and the fourth air valve 14;
the other end of the fourth air valve 14 is connected with the air compressor, and an air flow sensor 18 is arranged between the fourth air valve 14 and the air compressor;
the other end of the second air valve 12 and the other end of the third air valve 13 are connected in parallel and then are connected with a leakage detector 20;
a pipeline between the fourth air valve 14 and the air flow sensor 18 is connected in parallel with a standard leakage sensor 19 between a pipeline between the second air valve 12 and the third air valve 13 which are connected in parallel and then connected with a leakage detector 20, and a first air valve 11 and a fifth air valve 15 are respectively arranged at two ends of the standard leakage sensor 19;
an exhaust valve 17 is arranged on a pipeline which is connected with the leak detector 20 after the second air valve 12 and the third air valve 13 are connected in parallel;
the leak detection process comprises the following steps:
The principle of the invention is as follows:
the present invention uses the leak detector 20 as a test unit as the basis for the test system. The leak detector 20 is connected to the air inlet of the dual-circuit radiator.
The switches of the first air valve 11, the second air valve 12, the third air valve 13, the fourth air valve 14, the fifth air valve 15 and the sixth air valve 16 are arranged and combined to form different circuits.
The vent valve 17 is used to quickly vent air from the dry test leak circuit.
The air flow measurement sensor 18 is installed at the inlet of the first air valve 11, and since the standard of the leakage rate of the partition between the low-temperature heat-radiating portion 21 and the high-temperature heat-radiating portion 22 is higher than the standard of the leakage of the entire radiator, the partition between the low-temperature heat-radiating portion 21 and the high-temperature heat-radiating portion 22 cannot be directly detected by the leak detector 20, and therefore the air flow measurement sensor 18 is required to detect the partition between the low-temperature heat-radiating portion 21 and the high-temperature heat-radiating portion 22.
In addition, a standard orifice test sample 19 is installed in one of the bypasses, providing a standard orifice for calibrating the accuracy of the control flow sensor, enabling periodic calibration and testing of the air flow measurement sensor accuracy.
Therefore, the leakage detection tool can effectively detect leakage of the double-loop radiator, avoids the radiator with the leakage from being transmitted to a client side, and can detect the leakage of a single loop or internal leakage, namely the leakage between two loops through the double-loop dry type leakage detection tool.
In some embodiments, the tool bottom plate 10 is further provided with a marking mechanism 9; the marking mechanism 9 is used for marking the double-loop radiator passing the test.
In some embodiments, calibration of the air flow sensor 18 is required prior to leak detection, as follows:
opening the first air valve 11 and the fifth air valve 15; the second valve 12, third valve 13, fourth valve 14, sixth valve 16 and exhaust valve 17 are closed.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (3)
1. The double-loop radiator leak detection method comprises a dry detection tool; the dry detection tool is characterized by comprising a tool bottom plate (10);
the middle part of the tool bottom plate (10) is used for fixing a double-loop radiator, and two sides of the position to be provided with the double-loop radiator corresponding to the double-loop radiator are respectively provided with a positioning stop block (6) used for positioning the double-loop radiator, a fixed stop block (7) used for fixing the double-loop radiator and a plurality of pressing cylinders (8) used for pressing the double-loop radiator;
the outer sides of the two fixed stop blocks (7) correspond to two pipe orifices of a low-temperature heat dissipation part (21) of the double-loop radiator, and two pipe orifices of a high-temperature heat dissipation part (22) are respectively provided with a first outward expansion plug (1), a second outward expansion plug (2), a third outward expansion plug (4) and a side sealing plug (5), and the double-loop radiator is communicated with a detection loop;
the detection circuit is a pneumatic circuit and comprises a first air valve (11), a second air valve (12), a third air valve (13), a fourth air valve (14), a fifth air valve (15), a sixth air valve (16), an exhaust valve (17), an air flow sensor (18), a standard leak hole test sample (19) and a leak detector (20);
the two pipe openings of the high-temperature heat dissipation part (22) are respectively connected with the sixth air valve (16) and the second air valve (12);
the two pipe orifices of the low-temperature heat dissipation part (21) are respectively connected with the third air valve (13) and the fourth air valve (14);
the other end of the fourth air valve (14) is connected with an air compressor, and an air flow sensor (18) is arranged between the fourth air valve (14) and the air compressor;
the other end of the second air valve (12) and the other end of the third air valve (13) are connected in parallel and then are connected with the leakage detector (20);
a pipeline between the fourth air valve (14) and the air flow sensor (18) is connected with a pipeline between the second air valve (12) and the third air valve (13) in parallel and then connected with the leakage detector (20), the standard leakage sensor (19) is connected in parallel, and the first air valve (11) and the fifth air valve (15) are respectively arranged at two ends of the standard leakage sensor (19);
the second air valve (12) and the third air valve (13) are connected in parallel, and then the exhaust valve (17) is arranged on a pipeline connected with the leak detector (20);
the leak detection process comprises the following steps:
step 1, testing the air tightness of the whole radiator; specifically, the second air valve (12) and the third air valve (13) are opened; -closing the first gas valve (11), the fourth gas valve (14), the fifth gas valve (15), the sixth gas valve (16) and the exhaust valve (17);
step 2, pumping out air in the low-temperature heat dissipation part (21); the method specifically comprises the following steps: -opening the third gas valve (13) and the exhaust valve (17); closing the first air valve (11), the second air valve (12), the fourth air valve (14), the fifth air valve (15) and the sixth air valve (16); and air is pumped out through the air compressor;
step 3, testing the air tightness of the isolation plate between the low-temperature heat dissipation part (21) and the high-temperature heat dissipation part (22); the method specifically comprises the following steps: opening the second gas valve (12) and the fourth gas valve (14); closing the first air valve (11), the third air valve (13), the fifth air valve (15), the sixth air valve (16) and the exhaust valve (17).
2. The double-circuit radiator leakage detection method according to claim 1, characterized in that a marking mechanism (9) is further arranged on the tooling bottom plate (10); the marking mechanism (9) is used for marking the double-loop radiator passing the test.
3. A method of dual circuit heat sink leak detection as defined in claim 1, wherein said air flow sensor (18) is calibrated prior to leak detection by:
opening the first and fifth gas valves (11, 15); closing the second air valve (12), the third air valve (13), the fourth air valve (14), the sixth air valve (16) and the exhaust valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111556979.7A CN114354101A (en) | 2021-12-18 | 2021-12-18 | Double-loop radiator leakage detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111556979.7A CN114354101A (en) | 2021-12-18 | 2021-12-18 | Double-loop radiator leakage detection method |
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| Publication Number | Publication Date |
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| CN114354101A true CN114354101A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111556979.7A Pending CN114354101A (en) | 2021-12-18 | 2021-12-18 | Double-loop radiator leakage detection method |
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Citations (11)
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|---|---|---|---|---|
| DE19714601A1 (en) * | 1996-04-11 | 1997-11-06 | Kermi Gmbh | Test equipment for testing radiators for leaks |
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2021
- 2021-12-18 CN CN202111556979.7A patent/CN114354101A/en active Pending
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| CN213579992U (en) * | 2020-12-15 | 2021-06-29 | 中汽研汽车检验中心(武汉)有限公司 | Test bench |
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