CN111157179A - Heat exchanger leakage detection method and leakage detection device - Google Patents
Heat exchanger leakage detection method and leakage detection device Download PDFInfo
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- CN111157179A CN111157179A CN202010071173.8A CN202010071173A CN111157179A CN 111157179 A CN111157179 A CN 111157179A CN 202010071173 A CN202010071173 A CN 202010071173A CN 111157179 A CN111157179 A CN 111157179A
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- heat exchanger
- leak detection
- thermal imaging
- leakage
- pressure
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- 238000001514 detection method Methods 0.000 title claims abstract description 114
- 238000001931 thermography Methods 0.000 claims abstract description 60
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 238000007689 inspection Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000003570 air Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000012958 reprocessing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
-
- 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
-
- 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
- G01M3/3236—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 by monitoring the interior space of the containers
- G01M3/3272—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 by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention provides a heat exchanger leak detection method, which comprises the following steps: filling a leakage detection medium with preset pressure into the heat exchanger; pressure is kept for detection, if the variation amplitude of the pressure value of the leak detection medium in the heat exchanger is smaller than a first preset value after preset time, the heat exchanger is judged to have no serious leakage, and the heat exchanger is qualified for initial detection; acquiring a thermal imaging spectrum of the heat exchanger qualified by initial inspection; and analyzing the thermal imaging spectrum of the heat exchanger qualified in the initial inspection, and judging that the heat exchanger has micro leakage if the temperature value in the thermal imaging spectrum is smaller than a second preset value. According to the leakage detection method provided by the invention, the change of ambient temperature caused by medium leakage is utilized, the acquisition of the surface temperature information of the container is realized through an infrared thermal imaging device, and the leakage position and the leakage quantity of the container can be automatically and rapidly judged by a computer.
Description
Technical Field
The invention belongs to the technical field of heat exchangers, and particularly relates to a heat exchanger leak detection method and a leak detection device.
Background
The heat exchanger is one of four major components of an air conditioner, and if the normal work is to be maintained, the absolute sealing of a refrigeration cycle system is required to be kept, so that the refrigerant is ensured to effectively participate in the heat exchange of the system.
The heat exchanger is with its solder joint many, reveal the hidden danger big, need carry out strict quality management and control. At present, the commonly used heat exchanger leak detection method adopts a helium mass spectrum leak detection method to control the process quality. However, the helium mass spectrometer leak detection method has multiple leak detection processes and high labor cost. Helium is a rare element, and the production cost is high. Meanwhile, the helium detector has limited capacity and low leakage detection efficiency.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the existing heat exchanger leak detection method is high in cost and low in efficiency, so that the heat exchanger leak detection method and the leak detection device are provided.
In order to solve the above problems, the present invention provides a heat exchanger leak detection method, including:
filling a leakage detection medium with preset pressure into the heat exchanger;
pressure is kept for detection, if the variation amplitude of the pressure value of the leak detection medium in the heat exchanger is smaller than a first preset value after preset time, the heat exchanger is judged to have no serious leakage, and the heat exchanger is qualified for initial detection;
acquiring a thermal imaging spectrum of the heat exchanger qualified by initial inspection;
and analyzing the thermal imaging spectrum of the heat exchanger qualified in the initial inspection, and judging that the heat exchanger has micro leakage if the temperature value in the thermal imaging spectrum is smaller than a second preset value.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the preset pressure is 0.5-100 MPa.
Preferably, in the pressure holding detection, the pressure value variation range Δ T of the leak detection medium is | a-b |, where a is an actual measurement pressure value of the leak detection medium with a preset pressure after being charged into the heat exchanger, and b is an actual measurement pressure value of the leak detection medium in the heat exchanger after a preset time has elapsed.
Preferably, the step of analyzing the thermal imaging spectrum of the heat exchanger qualified for initial inspection comprises:
uniformly dividing the thermal imaging map into m multiplied by n grids, wherein m and n are both larger than 0;
calculating each grid pixel value;
and if the temperature value of the grid is smaller than a second preset value, judging that the surface area of the heat exchanger corresponding to the grid has trace leakage.
Preferably, the step of acquiring a thermographic profile of the heat exchanger comprises:
all surfaces of the heat exchanger are thermally image-scanned by an infrared thermal imaging device.
Preferably, the leak detection medium is any one of dry air, nitrogen, carbon dioxide, hydrocarbon compounds;
and/or the second preset value is an average temperature value of the thermal imaging spectrum.
A leak detection device adopting the leak detection method of the heat exchanger comprises:
the thermal imaging device is used for performing thermal imaging scanning on all surfaces of the heat exchanger to obtain a thermal imaging spectrum;
the pressure acquisition module is used for acquiring the pressure value of a leakage detection medium in the heat exchanger;
the analysis module is used for comparing the pressure value variation amplitude of the leak detection medium in the heat exchanger to judge whether the heat exchanger has serious leakage or not; the analysis module is also used for analyzing the thermal imaging spectrum, determining the temperature distribution of the thermal imaging spectrum and judging whether the heat exchanger has micro leakage or not.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the leak detection apparatus further comprises an ambient temperature control module, and the ambient temperature control module is configured to control temperature equalization of the working area, so as to ensure that background temperature equalization of the thermal imaging device in the thermal imaging scan is stable.
Preferably, the leak detection device comprises a detection room, and the thermal imaging equipment is arranged in the detection room and completes thermal imaging scanning on all surfaces of the heat exchanger; the environment temperature control module is arranged in the detection room to finish the temperature balance control in the detection room.
Preferably, the leak detection device includes the line body module, and the line body module is used for carrying the heat exchanger through detecting the room to make thermal imaging equipment accomplish the scanning, and the line body module is including the branch line body of reprocessing, and the branch line body of reprocessing is used for carrying the heat exchanger that has serious leakage and micro leakage to the district of reprocessing according to the instruction of analysis module.
The heat exchanger leak detection method and the leak detection device provided by the invention have the following beneficial effects:
according to the leakage detection method provided by the invention, the change of ambient temperature caused by medium leakage is utilized, the acquisition of the surface temperature information of the container is realized through an infrared thermal imaging device, and the leakage position and the leakage quantity of the container can be automatically and rapidly judged by a computer.
Drawings
FIG. 1 is a schematic flow chart of a heat exchanger testing method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a heat exchanger detection device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of the detection chamber according to the embodiment of the present invention.
The reference numerals are represented as:
1. a heat exchanger; 2. a detection chamber; 3. repairing the wire dividing body; 4. a wire body module; 5. an ambient temperature control module; 6. a thermal imaging apparatus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Referring to fig. 1, an embodiment of the present invention provides a method for detecting a leak of a heat exchanger, including:
and S1, filling the heat exchanger with a leakage detection medium with a preset pressure.
The preset pressure is 0.5-100MPa, so that the leakage medium in the heat exchanger is in a high-pressure state and leaks into the atmosphere from the micropores, the pressure is quickly reduced to 0.1MPa from the high pressure, the leakage medium instantly reaches the evaporation pressure, the leakage medium evaporates to take away the ambient heat, the ambient temperature of the leakage hole is lower than that of other places, and thermal imaging identification is facilitated.
The preset pressure may also be specifically determined according to the allowable pressure for the operation of the closed container to be checked, but should be guaranteed to be less than the maximum operating pressure of the heat exchanger.
The leakage detection medium is any one of dry air, nitrogen, carbon dioxide and hydrocarbon compounds. Such materials are less costly than prior art helium.
And S2, maintaining and detecting the pressure, and judging that the heat exchanger has no serious leakage and the heat exchanger is qualified in initial detection if the variation amplitude of the pressure value of the leakage detection medium in the heat exchanger is smaller than a first preset value after a preset time. If the variation amplitude of the pressure value of the leak detection medium in the heat exchanger reaches or is larger than the first preset value after the preset time, the heat exchanger is indicated to have serious leakage, and the heat exchanger can be directly judged to be unqualified and must be repaired.
In the pressure maintenance detection, the variation amplitude delta T of the pressure value of the leakage detection medium is | a-b |, wherein a is the actual measurement pressure value of the leakage detection medium with preset pressure after being filled into the heat exchanger, and b is the actual measurement pressure value of the leakage detection medium in the heat exchanger after the preset time. After the leak detection medium is filled into the heat exchanger, certain detection errors exist, so that the actual measurement pressure values after the initial time and the preset time are used as judgment bases in pressure maintenance detection.
And S3, acquiring a thermal imaging atlas of the heat exchanger qualified in the initial inspection, and only performing thermal imaging detection on the heat exchanger subjected to the initial inspection because the heat exchanger seriously leaked in the previous step is directly judged to be unqualified.
And the thermal imaging spectrum is specifically a thermal imaging scanning on all surfaces of the heat exchanger by an infrared thermal imaging device.
And S4, analyzing the thermal imaging spectrum of the heat exchanger qualified in the initial inspection, and judging that the heat exchanger has micro leakage if the temperature value in the thermal imaging spectrum is less than a second preset value. The leakage detection medium in the heat exchanger is in a high-pressure state, after leakage from the micropores, the pressure drops suddenly to reach the evaporation pressure instantly, and according to the principle of evaporation heat absorption, the heat around the micropores is taken away by the evaporation of the leakage detection medium, so that the temperature around the micropores is higher than that of other places, and the leakage detection medium can be identified in a thermal imaging chart.
S401, uniformly dividing the thermal imaging atlas into m multiplied by n grids, wherein m and n are both larger than 0;
s402, calculating each grid pixel value;
and S403, if the temperature value of the grid is smaller than a second preset value, judging that the surface area of the heat exchanger corresponding to the grid has trace leakage. Wherein the second preset value is an average temperature value of all grids in the thermal imaging atlas.
According to the leakage detection method provided by the invention, the change of ambient temperature caused by medium leakage is utilized, the acquisition of the surface temperature information of the container is realized through an infrared thermal imaging device, and the leakage position and the leakage quantity of the container can be automatically and rapidly judged by a computer.
The invention changes the traditional process of the leak point inspection of the closed container, adopts an infrared thermal imaging method, realizes the sample sampling and automation of the leak point inspection of the closed container, and lays a foundation for future industrial intelligent manufacturing.
With reference to fig. 2 and 3, an embodiment of the present invention provides a leak detection apparatus using the above leak detection method for a heat exchanger, including: the thermal imaging device 6 is used for performing thermal imaging scanning on all the surfaces of the heat exchanger 1 to obtain a thermal imaging spectrum; the pressure acquisition module is used for acquiring the pressure value of a leakage detection medium in the heat exchanger 1; the analysis module is used for comparing the pressure value variation amplitude of the leak detection medium in the heat exchanger 1 to judge whether the heat exchanger 1 has serious leakage or not; the analysis module is also used for analyzing the thermal imaging spectrum, determining the temperature distribution of the thermal imaging spectrum and determining whether the heat exchanger 1 has micro leakage.
The leak detection device provided by the embodiment of the invention can be in seamless butt joint with the existing assembly line, realizes a one-flow working mode, changes intermittent leak detection into continuous leak detection, improves leak detection efficiency, and judges whether a closed container leaks or not by a series of information acquisition and autonomy. The judgment of artificial monitoring is not needed, and the informatization degree and the process reliability are improved. Meanwhile, the number of operating personnel is greatly reduced, three operators are needed at most, the heat exchanger is prevented from being carried in the leakage detection process, and the labor intensity is reduced.
Preferably, the leak detection apparatus further comprises an ambient temperature control module 5, and the ambient temperature control module 5 is configured to control temperature equalization of the working area, so as to ensure that the background temperature equalization of the thermal imaging device 6 in the thermal imaging scan is stable. And the environment temperature control mode 5 works according to a system instruction, so that the temperature balance of the region of the leakage detection device is ensured, and the background temperature of the container to be detected is ensured to be balanced and stable.
Preferably, the leakage detection device comprises a detection room 2, a thermal imaging device 6 is arranged in the detection room 2, and thermal imaging scanning is carried out on all the surfaces of the heat exchanger 1; the environment temperature control module 5 is arranged in the detection room 2 to complete the temperature balance control in the detection room 2.
Preferably, in order to connect the leak detection apparatus to a heat exchanger production line, the leak detection apparatus includes a wire body module 4, and the wire body module 4 is used for conveying the heat exchanger 1 through the detection room 2 so as to enable the thermal imaging device 6 to complete scanning. The line body module 4 can be spliced as required, and the length of the production line is changed to control the production beat.
Preferably, for the treatment of unqualified heat exchangers, the wire body module 4 comprises a repair wire body 3, and the repair wire body 3 is used for conveying the heat exchanger 1 with serious leakage and micro leakage to a repair area according to the instruction of the analysis module.
The leak detection device can realize the leak detection assembly line operation of the closed container, automatically collects data, judges and analyzes in the core leak detection link, and finally gives out whether the container to be detected is qualified or not without manual carrying and assistance. The bottleneck problem of manual production is thoroughly solved, and the degree of automation is also improved simultaneously.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. A heat exchanger leak detection method is characterized by comprising the following steps:
a leakage detecting medium with preset pressure is filled into the heat exchanger (1);
pressure is kept for detection, if the variation amplitude of the pressure value of the leak detection medium in the heat exchanger (1) is smaller than a first preset value after preset time, the heat exchanger (1) is judged to have no serious leakage, and the heat exchanger (1) is qualified in initial detection;
acquiring a thermal imaging spectrum of the heat exchanger (1) qualified by initial inspection;
and analyzing the thermal imaging spectrum of the heat exchanger (1) qualified in the initial inspection, and if the temperature value in the thermal imaging spectrum is smaller than a second preset value, judging that the heat exchanger (1) has trace leakage.
2. The leak detection method for a heat exchanger according to claim 1, wherein the preset pressure is 0.5-100 MPa.
3. The heat exchanger leak detection method according to claim 1, wherein in the pressure maintenance test, the variation amplitude Δ T of the pressure value of the leak detection medium is | a-b |, where a is the measured pressure value of the leak detection medium with the preset pressure after the leak detection medium is charged into the heat exchanger (1), and b is the measured pressure value of the leak detection medium in the heat exchanger (1) after the preset time elapses.
4. Heat exchanger leak detection method according to claim 1, characterized in that the step of analyzing a thermographic profile of the heat exchanger (1) that is qualified for initial inspection comprises:
uniformly dividing the thermal imaging map into m multiplied by n grids, wherein m and n are both larger than 0;
calculating each grid pixel value;
and if the temperature value of the grid is smaller than a second preset value, judging that the surface area of the heat exchanger (1) corresponding to the grid has trace leakage.
5. Method for leak detection of a heat exchanger according to claim 1, characterized in that the step of acquiring a thermographic profile of the heat exchanger (1) comprises:
all surfaces of the heat exchanger (1) are thermally image-scanned by an infrared thermal imaging device (6).
6. The leak detection method for a heat exchanger according to claim 1, wherein the leak detection medium is any one of dry air, nitrogen, carbon dioxide, hydrocarbon compounds;
and/or the second preset value is an average temperature value of the thermal imaging spectrum.
7. Leak detection apparatus using a leak detection method for a heat exchanger according to any one of claims 1 to 6, comprising:
the thermal imaging device (6) is used for performing thermal imaging scanning on all surfaces of the heat exchanger (1) to obtain a thermal imaging spectrum;
the pressure acquisition module is used for acquiring the pressure value of a leak detection medium in the heat exchanger (1);
the analysis module is used for comparing the pressure value change amplitude of the leakage detection medium in the heat exchanger (1) and judging whether the heat exchanger (1) has serious leakage or not; the analysis module is also used for analyzing the thermal imaging map, determining the temperature distribution of the thermal imaging map and judging whether the heat exchanger (1) has trace leakage or not.
8. Leak detection apparatus according to claim 7, characterized in that the leak detection apparatus further comprises an ambient temperature control module (5), the ambient temperature control module (5) being adapted to control the temperature equalization of the working area, ensuring that the background temperature equalization of the thermal imaging device (6) is stable, including during the thermal imaging scan.
9. Leak detection apparatus according to claim 8, characterized in that the leak detection apparatus comprises a detection chamber (2), the thermographic device (6) being arranged in the detection chamber (2) to perform a thermographic scan of all surfaces of the heat exchanger (1); and the environment temperature control module (5) is arranged in the detection room (2) to complete the temperature balance control in the detection room (2).
10. Leak detection apparatus according to claim 9, characterized in that it comprises a line module (4), said line module (4) being adapted to convey the heat exchanger (1) through the detection room (2) in order to complete the scanning of the thermal imaging device (6), said line module (4) comprising a rework branching body (3), said rework branching body (3) being adapted to convey the heat exchanger (1) in the presence of severe leaks and micro leaks to a rework area according to the instructions of an analysis module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010071173.8A CN111157179A (en) | 2020-01-21 | 2020-01-21 | Heat exchanger leakage detection method and leakage detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010071173.8A CN111157179A (en) | 2020-01-21 | 2020-01-21 | Heat exchanger leakage detection method and leakage detection device |
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| CN111157179A true CN111157179A (en) | 2020-05-15 |
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| CN202010071173.8A Pending CN111157179A (en) | 2020-01-21 | 2020-01-21 | Heat exchanger leakage detection method and leakage detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967152A (en) * | 2019-12-31 | 2020-04-07 | 江门龙浩智能装备有限公司 | Heat exchanger leak detection device and heat exchanger leak detection method |
| CN112032922A (en) * | 2020-08-26 | 2020-12-04 | 深圳市泰路科技有限公司 | Air conditioning system leakage point detection method and system |
| CN112067211A (en) * | 2020-09-07 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Method and device for judging SF6 gas leakage in GIS sleeve, electronic equipment and storage medium |
| CN113808127A (en) * | 2021-09-27 | 2021-12-17 | 苏州中诚地利科技有限公司 | Radiator detection method and device |
| CN114878111A (en) * | 2022-05-05 | 2022-08-09 | 珠海格力电器股份有限公司 | Leakage detection method and device for air conditioner heat exchanger |
| CN115479730A (en) * | 2022-09-29 | 2022-12-16 | 王晓革 | Leak detection method based on vacuum boiler |
| CN115683457A (en) * | 2023-01-05 | 2023-02-03 | 中国核动力研究设计院 | Method and system for detecting leakage of micro-channel heat exchanger |
-
2020
- 2020-01-21 CN CN202010071173.8A patent/CN111157179A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967152A (en) * | 2019-12-31 | 2020-04-07 | 江门龙浩智能装备有限公司 | Heat exchanger leak detection device and heat exchanger leak detection method |
| CN112032922A (en) * | 2020-08-26 | 2020-12-04 | 深圳市泰路科技有限公司 | Air conditioning system leakage point detection method and system |
| CN112067211A (en) * | 2020-09-07 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Method and device for judging SF6 gas leakage in GIS sleeve, electronic equipment and storage medium |
| CN113808127A (en) * | 2021-09-27 | 2021-12-17 | 苏州中诚地利科技有限公司 | Radiator detection method and device |
| CN114878111A (en) * | 2022-05-05 | 2022-08-09 | 珠海格力电器股份有限公司 | Leakage detection method and device for air conditioner heat exchanger |
| CN114878111B (en) * | 2022-05-05 | 2023-08-18 | 珠海格力电器股份有限公司 | Leakage detecting method and leakage detecting device for air conditioner heat exchanger |
| CN115479730A (en) * | 2022-09-29 | 2022-12-16 | 王晓革 | Leak detection method based on vacuum boiler |
| CN115683457A (en) * | 2023-01-05 | 2023-02-03 | 中国核动力研究设计院 | Method and system for detecting leakage of micro-channel heat exchanger |
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