CN110307953A - A kind of infrared thermal imaging automatic leak-checking device for heat exchanger - Google Patents
A kind of infrared thermal imaging automatic leak-checking device for heat exchanger Download PDFInfo
- Publication number
- CN110307953A CN110307953A CN201910642393.9A CN201910642393A CN110307953A CN 110307953 A CN110307953 A CN 110307953A CN 201910642393 A CN201910642393 A CN 201910642393A CN 110307953 A CN110307953 A CN 110307953A
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- thermal imaging
- infrared thermal
- heat exchanger
- imaging device
- top surface
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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
- G01M3/38—Investigating fluid-tightness of structures by using light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of infrared thermal imaging automatic leak-checking devices for heat exchanger, including infrared thermal imaging device, control unit and display unit；Infrared thermal imaging device is mounted on the top surface and back of heat exchanger, and the infrared thermal imaging device of top surface is arranged in pipe row gap, and the vertical top surface of lens direction is downward；Subsequent infrared thermal imaging device is arranged in every layer of intermediate gap of the row of filling, and lens direction is to arrange axis forward along pipe；The data that infrared thermal imaging device scans are converted to temperature profile image by control unit, and by judging whether heat exchanger leaks compared with the characteristic image of nominal situation state.The present invention applies on the heat exchanger apparatus of smoke waste heat utilization system, judges whether there is leak feature, guarantees smoke waste heat utilization system stable operation.
Description
Technical field
The present invention relates to fume afterheats to utilize technical field, and in particular to a kind of infrared thermal imaging for heat exchanger is automatic
Leakage detection apparatus.
Background technique
Flue gas heat-exchange unit is the main heat exchange equipment in smoke waste heat utilization system, and heat transferring medium is water.The pipe of water flowing
The abrasion that road generates when can run because of itself manufacture, defective mounting or later period leads to leak, to smoke waste heat utilization system
Stable operation and the safe operation of other equipment device cause serious influence.
Therefore, discovery leakage in time, it is particularly important to flue gas heat-exchange unit so that operations staff rectifies and improves.
Summary of the invention
The purpose of the present invention is to provide a kind of infrared thermal imaging automatic leak-checking devices for heat exchanger, are capable of detecting when
The leaking area of heat exchanger, convenient discovery defect in time are simultaneously overhauled, and guarantee the stable operation of system.
The technical solution for realizing the aim of the invention is as follows: a kind of infrared thermal imaging automatic leak detection dress for heat exchanger
It sets, including infrared thermal imaging device, control unit and display unit；Infrared thermal imaging device is mounted on the top surface of heat exchanger with after
Face, the infrared thermal imaging device of top surface are arranged in pipe row gap, and the vertical top surface of lens direction is downward；Subsequent infrared thermal imaging dress
It sets and is arranged in every layer of intermediate gap of the row of filling, lens direction is to arrange axis forward along pipe；Control unit is by infrared thermal imaging device
The data of scanning are converted to temperature profile image, and by compared with the characteristic image of nominal situation state, judging that heat exchanger is
No leakage.
Compared with prior art, remarkable advantage of the invention are as follows: the present invention proposes whether a kind of automatic detection heat exchanger leaks
The device of water solves the problems, such as that heat exchanger is difficult to determination to leaking area in operation engineering and causes to overhaul in time, drops
Low maintenance difficulty, improves inspection speed, improves the reliability of heat exchanger and smoke waste heat utilization system.
Detailed description of the invention
Fig. 1 is the infrared thermal imaging automatic leak-checking device schematic diagram for heat exchanger.
Specific embodiment
A kind of infrared thermal imaging automatic leak-checking device for heat exchanger, including infrared thermal imaging device, control unit and
Display unit infrared thermal imaging device is mounted on the top surface and back of heat exchanger, for detecting whether leaking and determining leakage position
It sets；The infrared thermal imaging device of top surface is arranged in pipe row gap, and the vertical top surface of lens direction is downward；Subsequent infrared thermal imaging dress
It sets and is arranged in every layer of intermediate gap of the row of filling, lens direction is to arrange axis forward along pipe.
The data that infrared thermal imaging device scans are converted to temperature profile image by control unit, and by with nominal situation
The characteristic image of state compares, and judges whether heat exchanger leaks.If leaking, leak position is determined, and on the display unit
Provide prompt.Nominal situation state refers to the state not leaked.
Further, top surface and below two temperature profile images are generated；The temperature profile of heat exchanger nominal situation state
Image is through image procossing, the only edge feature of display pipes and components；Whether increase water flow according in temperature profile image
Edge feature data judge whether to leak, and warning is provided on display unit device；The leakage point detected is in two temperature
Each there are two plane coordinates on characteristic image, this four coordinates can be obtained a 3 d space coordinate, thereby determine that out and leak position
It sets.
Further, control unit and display unit are arranged in control room, pass through cable connection.
Further, the infrared thermal imaging device is equipped with the shield of waterproof and dustproof.
The following describes the present invention in detail with reference to examples.
Embodiment
As shown in Figure 1, a kind of infrared thermal imaging automatic leak-checking device for heat exchanger, including infrared thermal imaging device 1,
Control unit 2, display unit 3；Control unit 2 and display unit 3 are placed on control room, pass through cable connection；Infrared thermal imaging
Device 1 is mounted on the top surface and back of heat exchanger, for detecting whether leaking and determining leakage position.
The infrared thermal imaging device 1 is externally provided with high temperature-proof, anti-wear, waterproof and dustproof shield.
Quantity and the position of infrared thermal imaging device are arranged according to the dimensional structure of pipe row；The infrared thermal imaging of top surface fills
It sets and is arranged in pipe row gap, the vertical top surface in direction is downward；Between subsequent infrared thermal imaging device is arranged among every layer of filling row
Gap, direction are to arrange axis forward along pipe.Ensure that detection range can cover whole pipe rows.
Because the water in inner tube of heat exchanger row, flue gas and pipeline installs inspection software on the control unit there are the temperature difference
The data that infrared thermal imaging device scans can be converted to can temperature profile image shown over the display.And it can pass through
Judge whether heat exchanger leaks and estimate general leak position compared with characteristic image under normal circumstances, and in display
On provide prompt.Operations staff can also voluntarily observe differentiation.
Top surface and below two temperature profile images are generated on software；The temperature profile image of heat exchanger normal condition passes through
Processing, the edge feature of display pipes and components；It will increase the edge feature data of water flow when leakage in characteristic image；From
And judge out and whether leak, warning is provided over the display；The leakage point detected is each on two characteristic images
There are two plane coordinates, and (two plane coordinates have a coordinate phase to the available 3 d space coordinate of this four coordinates
Together), leak position is therefore deduced that.
Claims (4)
1. a kind of infrared thermal imaging automatic leak-checking device for heat exchanger, which is characterized in that including infrared thermal imaging device, control
Unit and display unit processed；Infrared thermal imaging device is mounted on the top surface and back of heat exchanger, the infrared thermal imaging device of top surface
Setting arranges gap in pipe, and the vertical top surface of lens direction is downward；Subsequent infrared thermal imaging device is arranged among every layer of filling row
Gap, lens direction are to arrange axis forward along pipe；The data that infrared thermal imaging device scans are converted to temperature spy by control unit
Image is levied, and by judging whether heat exchanger leaks compared with the characteristic image of nominal situation state；If leaking, determine
Leak position, and prompt is provided on the display unit.
2. the infrared thermal imaging automatic leak-checking device according to claim 1 for heat exchanger, which is characterized in that heat exchanger
The temperature profile image of nominal situation state is through image procossing, the only edge feature of display pipes and components；According to temperature spy
Whether there are the edge feature data of water flow in sign image, judges whether to leak.
3. the infrared thermal imaging automatic leak-checking device according to claim 1 for heat exchanger, which is characterized in that control is single
Member and display unit are arranged in control room, pass through cable connection.
4. the infrared thermal imaging automatic leak-checking device according to claim 1 for heat exchanger, which is characterized in that described red
Outer thermal imaging device is equipped with the shield of waterproof and dustproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642393.9A CN110307953A (en) | 2019-07-16 | 2019-07-16 | A kind of infrared thermal imaging automatic leak-checking device for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642393.9A CN110307953A (en) | 2019-07-16 | 2019-07-16 | A kind of infrared thermal imaging automatic leak-checking device for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110307953A true CN110307953A (en) | 2019-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910642393.9A Pending CN110307953A (en) | 2019-07-16 | 2019-07-16 | A kind of infrared thermal imaging automatic leak-checking device for heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577399A (en) * | 2022-01-18 | 2022-06-03 | 潍柴动力股份有限公司 | Engine air leakage detection method and detection device |
| 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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| US20040003914A1 (en) * | 2002-07-02 | 2004-01-08 | Carrier Corporation | Leak detection with thermal imaging |
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| CN103575475A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle sealing performance detecting device and method |
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2019
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| CN103575475A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle sealing performance detecting device and method |
| CN104677576A (en) * | 2015-02-09 | 2015-06-03 | 中国计量学院 | Infrared thermal imaging low-temperature economizer leakage detection device |
| CN106092446A (en) * | 2016-07-29 | 2016-11-09 | 大连理工大学 | Valve leak detecting system based on infrared thermal imaging technique and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577399A (en) * | 2022-01-18 | 2022-06-03 | 潍柴动力股份有限公司 | Engine air leakage detection method and detection device |
| 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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Application publication date: 20191008 |