CN114704777B - Leakage detection device and method for heat supply network circulating water system - Google Patents
Leakage detection device and method for heat supply network circulating water system Download PDFInfo
- Publication number
- CN114704777B CN114704777B CN202210462239.5A CN202210462239A CN114704777B CN 114704777 B CN114704777 B CN 114704777B CN 202210462239 A CN202210462239 A CN 202210462239A CN 114704777 B CN114704777 B CN 114704777B
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- Prior art keywords
- circulating water
- supply network
- heat supply
- inlet
- outlet
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000003814 drug Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 13
- 239000006260 foam Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/222—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a leakage detection device and method for a heat supply network circulating water system, comprising an air charging device, a first heat exchanger, a second heat exchanger and a detection liquid spraying device for detecting a heat supply network primary circulating water pipeline and a heat supply network secondary circulating water pipeline; the outlet of the air charging device is divided into two paths, one path is connected with the inlet of the primary circulating water pipeline of the heat supply network, the outlet of the primary circulating water pipeline of the heat supply network is connected with the first inlet of the first heat exchanger, and the first outlet of the first heat exchanger is connected with the first inlet of the second heat exchanger; the first outlet of the second heat exchanger is connected with the inlet of the primary circulating water pipeline of the heat supply network; the other path of the outlet of the air charging device is communicated with the inlet of a secondary circulating water pipeline of the heat supply network; and the outlet of the heat supply network secondary circulating water pipeline is connected with the second inlet of the first heat exchanger. The invention has simple detection process, easy operation and high identification degree, and can quickly and intuitively find the leakage part and the leakage point of the circulating water pipe network of the heat supply network, thereby preventing the heating safety accident caused during the heating.
Description
Technical Field
The invention relates to a leakage detection device and method for a heat supply network circulating water system, and belongs to the technical field of leakage detection of circulating water pipelines.
Background
At present, the water quality of primary and secondary circulating water in a heat supply network system is improperly controlled, so that the water circulating pipeline of the heat supply network is corroded and leaked. Especially, the heat supply network system with longer running time has more leakage points. In general, a mode of adding water supply is adopted to maintain the operation of a heat supply pipe network during heat supply, so that the water supply and heat loss are large during heat supply, and the energy conservation and the economy are poor. At present, leakage is detected mainly through modes such as a non-heating period hydrostatic test, but most of heating pipelines are buried pipe networks, leakage points are not easy to find, and potential safety hazards are brought to the next heating period.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a leakage detection device for a heat supply network circulating water system, which is simple and easy to operate.
Another object of the present invention is to provide a leakage detecting method for a heat supply network circulating water system, which can quickly and intuitively find a leakage point of a heat supply network circulating water pipe, and prevent a heating safety accident caused during a heating period due to leakage of the heat supply network circulating water pipe.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a heat supply network circulating water system leak hunting device, includes heat supply network primary circulation water pipe, heat supply network secondary circulation water pipe, aerating device, first heat exchanger, second heat exchanger and is used for detecting heat supply network primary circulation water pipe and heat supply network secondary circulation water pipe's detection liquid spray set;
the outlet of the air charging device is divided into two paths, one path is connected with the inlet of the primary circulating water pipeline of the heat supply network, the outlet of the primary circulating water pipeline of the heat supply network is connected with the first inlet of the first heat exchanger, and the first outlet of the first heat exchanger is connected with the first inlet of the second heat exchanger; the first outlet of the second heat exchanger is connected with the inlet of the primary circulating water pipeline of the heat supply network;
the other path of the outlet of the air charging device is communicated with the inlet of a secondary circulating water pipeline of the heat supply network; and the outlet of the heat supply network secondary circulating water pipeline is connected with the second inlet of the first heat exchanger.
The invention is further improved in that a heat supply network secondary circulating water charging valve and a heat supply network secondary circulating water charging pipeline are arranged between one way of an outlet of the charging device and an inlet of the heat supply network secondary circulating water pipeline.
The invention is further improved in that a primary circulating water charging valve through the heat supply network and a primary circulating water charging pipeline through the heat supply network are arranged between the other path of the outlet of the charging device and the inlet of the primary circulating water pipeline of the heat supply network.
The invention is further improved in that the inlet of the secondary circulating water pipeline of the heat supply network is also connected with the second outlet of the first heat exchanger.
The invention is further improved in that the outlet of the secondary circulating water pipeline of the heat supply network is connected with the second inlet of the first heat exchanger through the radiator.
The invention is further improved in that the first outlet of the first heat exchanger is connected to the second inlet of the second heat exchanger via a circulation pump.
A further development of the invention is that the second inlet of the second heat exchanger is connected to a steam turbine.
The invention is further improved in that the detection liquid spraying device comprises a medicine box and a detection liquid spray head connected with the medicine box; the air charging device comprises an air cylinder, and the air cylinder is a single air cylinder or an air cylinder group.
The utility model provides a heat supply network circulating water system leak hunting method, based on above-mentioned device, aerating device aerifys heat supply network primary circulation water pipe and heat supply network secondary circulation water pipe, sprays the detection liquid along heat supply network primary circulation water pipe and heat supply network secondary circulation water pipe, confirms the leak source.
A further improvement of the present invention is that the inflator is filled with an alkaline gas.
Compared with the prior art, the invention has the beneficial effects that:
the detection liquid spraying device is arranged to detect the inflated primary circulating water pipeline and the inflated secondary circulating water pipeline of the heat supply network, and the leakage detection device of the circulating water system of the heat supply network has a simple structure and is easy to operate, and the leakage position and the leakage point of the circulating water pipeline network of the heat supply network can be quickly and intuitively found.
The method for detecting the leakage of the heat supply network circulating water system has the advantages of simple detection process, easy operation and high identification degree, and can quickly and intuitively find the leakage part and the leakage point of the heat supply network circulating water pipe network, thereby preventing heating safety accidents caused during heating due to the leakage of the heat supply network circulating water pipe network, and overcoming the problems that the method for detecting the leakage by water injection, helium mass spectrometry and aerated foam in the prior art is suitable for detecting the leakage of the pipeline above the bare ground and can not intuitively and quickly find the leakage point of the heat supply network circulating water pipe network.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
In the figure, 1 is a gas cylinder; 2 is a primary circulating water charging valve of the heat supply network; 3 is a primary circulating water inflation pipeline of the heat supply network; 4 is a secondary circulating water charging valve of the heat supply network; 5 is a secondary circulating water inflation pipeline of the heat supply network; 6 is a medicine chest; 7 is a detection liquid spray head; 8 is a primary circulating water pipeline of the heat supply network; 9 is a heat supply network secondary circulating water pipeline; 10 is an inflator; 11 is a detection liquid spraying device; 12 is a first heat exchanger; 13 is a second heat exchanger; 14 is a circulation pump; 15 is a steam turbine.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, a leak detection device of a heat supply network circulating water system comprises a heat supply network primary circulating water charging valve 2, a heat supply network primary circulating water charging pipeline 3, a heat supply network secondary circulating water charging valve 4, a heat supply network secondary circulating water charging pipeline 5, an charging device 10 and a detection liquid spraying device 11;
the inflator 10 includes a gas cylinder 1; the outlet of the gas cylinder 1 is divided into two paths, one path is connected with the inlet of a heat supply network secondary circulating water inflation pipeline 5 through a heat supply network secondary circulating water inflation valve 4, and the outlet of the heat supply network secondary circulating water inflation pipeline 5 is communicated with the inlet of a heat supply network secondary circulating water pipeline 9; the inlet of the heat supply network secondary circulating water pipeline 9 is also connected with the second outlet of the first heat exchanger 12, and the outlet of the heat supply network secondary circulating water pipeline 9 is connected with the second inlet of the first heat exchanger 12 through a radiator; the other path of the outlet of the gas cylinder 1 is connected with the inlet of a heat supply network primary circulating water charging pipeline 3 through a heat supply network primary circulating water charging valve 2, the outlet of the heat supply network primary circulating water charging pipeline 3 is connected with the inlet of a heat supply network primary circulating water pipeline 8, the outlet of the heat supply network primary circulating water pipeline 8 is connected with the first inlet of a first heat exchanger 12, the first outlet of the first heat exchanger 12 is connected with the second inlet of a second heat exchanger 13 through a circulating pump 14, and the second outlet of the second heat exchanger 13 is connected with a second outlet pipeline; the steam turbine 15 is connected with a second inlet of the second heat exchanger 13, and a first outlet of the second heat exchanger 13 is connected with an inlet of the primary circulating water pipe 8 of the heat supply network.
The detection liquid spraying device 11 comprises a medicine box 6 and a detection liquid spray head 7 connected with the medicine box 6.
Further, the gas cylinder 1 may be a single gas cylinder or a gas cylinder group, so as to maintain the positive pressure state of the gas inside the primary circulation water pipe 8 of the heat supply network and the secondary circulation water pipe 9 of the heat supply network.
Furthermore, the primary heat supply network circulating water inflation pipeline 3 and the primary heat supply network circulating water inflation pipeline 8, and the secondary heat supply network circulating water inflation pipeline 5 and the secondary heat supply network circulating water inflation pipeline 9 can be connected in multiple points for sectional inflation, so that the primary heat supply network circulating water inflation pipeline 8 can be conveniently leaked in a sectional manner.
By adopting the device, the gas cylinder 1 inflates the primary circulating water pipeline 8 of the heat supply network through the primary circulating water inflation valve 2 of the heat supply network and the primary circulating water inflation pipeline 3 of the heat supply network; the gas cylinder 1 inflates a heat supply network secondary circulating water pipeline 9 through a heat supply network secondary circulating water inflation valve 4 and a heat supply network secondary circulating water inflation pipeline 5; the detection liquid spraying device 11 is adopted to spray detection liquid along the primary circulation water pipeline 8 of the heat supply network and the secondary circulation water pipeline 9 of the heat supply network so as to confirm leakage points.
Further, the gas cylinder 1 is filled with alkaline pungent odor gas such as NH 3 Etc.; the leakage of the pungent odor can be rapidly checked.
Further, colorless phenolphthalein detection liquid prepared in the medicine box 6 meets NH 3 NH is encountered in red or purple litmus detection liquid 3 The color of the liquid changes blue, and the liquid can be further sprayed to the part with the outward pungent smell to detect the leakage point.
The pipeline leakage detection in the prior art mainly comprises water injection leakage detection, helium mass spectrum leakage detection, aerated foam leakage detection and the like, and the methods are suitable for pipeline leakage detection above the bare ground, while the heat supply network circulating water pipe network is mainly a buried pipe network, and when leakage or micro leakage exists, leakage points cannot be intuitively and rapidly found by adopting the method.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. It is intended that all such variations as fall within the scope of the appended claims.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Claims (9)
1. The leakage detection device of the heat supply network circulating water system is characterized by comprising a heat supply network primary circulating water pipeline (8), a heat supply network secondary circulating water pipeline (9), an air charging device (10), a first heat exchanger (12), a second heat exchanger (13) and a detection liquid spraying device (11) for detecting the heat supply network primary circulating water pipeline (8) and the heat supply network secondary circulating water pipeline (9);
the outlet of the air charging device (10) is divided into two paths, one path is connected with the inlet of the primary circulating water pipeline (8) of the heat supply network, the outlet of the primary circulating water pipeline (8) of the heat supply network is connected with the first inlet of the first heat exchanger (12), and the first outlet of the first heat exchanger (12) is connected with the first inlet of the second heat exchanger (13); the first outlet of the second heat exchanger (13) is connected with the inlet of a primary circulating water pipeline (8) of the heat supply network;
the other path of the outlet of the air charging device (10) is communicated with the inlet of a secondary circulating water pipeline (9) of the heat supply network; the outlet of the heat supply network secondary circulating water pipeline (9) is connected with the second inlet of the first heat exchanger (12);
the detection liquid spraying device (11) comprises a medicine box (6) and a detection liquid spray head (7) connected with the medicine box (6); the air charging device (10) comprises an air cylinder (1), wherein the air cylinder (1) is a single air cylinder or an air cylinder group, and the air cylinder (1) is filled with alkaline pungent odor gas NH 3 ；
Colorless phenolphthalein detection liquid or purple litmus detection liquid is prepared in the medicine box (6).
2. The leakage detection device of the heat supply network circulating water system according to claim 1, wherein a heat supply network secondary circulating water charging valve (4) and a heat supply network secondary circulating water charging pipeline (5) are arranged between one path of an outlet of the charging device (10) and an inlet of a heat supply network secondary circulating water pipeline (9).
3. The leakage detection device of the heat supply network circulating water system according to claim 1, wherein a heat supply network primary circulating water charging valve (2) and a heat supply network primary circulating water charging pipeline (3) are arranged between the other path of the outlet of the charging device (10) and the inlet of the heat supply network primary circulating water pipeline (8).
4. A heat supply network circulating water system leak detection apparatus as claimed in claim 1, wherein the inlet of the heat supply network secondary circulating water pipe (9) is also connected to the second outlet of the first heat exchanger (12).
5. The leakage detection device of the heat supply network circulating water system according to claim 1, wherein the outlet of the heat supply network secondary circulating water pipeline (9) is connected with the second inlet of the first heat exchanger (12) through a radiator.
6. The leakage detection device of the heat supply network circulating water system according to claim 1, wherein the first outlet of the first heat exchanger (12) is connected with the second inlet of the second heat exchanger (13) through a circulating pump (14).
7. A heat network circulating water system leakage detection device according to claim 1, characterized in that the second inlet of the second heat exchanger (13) is connected with a steam turbine (15).
8. A method for detecting leakage of a heat supply network circulating water system, which is characterized in that based on the device of any one of claims 1-7, an inflating device (10) inflates a heat supply network primary circulating water pipeline (8) and a heat supply network secondary circulating water pipeline (9), and detection liquid is sprayed along the heat supply network primary circulating water pipeline (8) and the heat supply network secondary circulating water pipeline (9) to confirm leakage points.
9. The method for detecting leakage of a heat supply network circulating water system according to claim 8, wherein the charging device (10) is filled with alkaline gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462239.5A CN114704777B (en) | 2022-04-28 | 2022-04-28 | Leakage detection device and method for heat supply network circulating water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462239.5A CN114704777B (en) | 2022-04-28 | 2022-04-28 | Leakage detection device and method for heat supply network circulating water system |
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| Publication Number | Publication Date |
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| CN114704777A CN114704777A (en) | 2022-07-05 |
| CN114704777B true CN114704777B (en) | 2024-03-12 |
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| CN202210462239.5A Active CN114704777B (en) | 2022-04-28 | 2022-04-28 | Leakage detection device and method for heat supply network circulating water system |
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|---|---|---|---|---|
| CN201866829U (en) * | 2010-11-10 | 2011-06-15 | 河南省电力勘测设计院 | Heat exchange station system |
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| CN108533968A (en) * | 2018-05-09 | 2018-09-14 | 北京市燃气集团有限责任公司 | Steel gas pipe underground leak point positioning method based on search gas |
| CN209688534U (en) * | 2019-04-19 | 2019-11-26 | 北京帕克国际工程咨询股份有限公司 | Geothermal heat pipeline device for detecting sealability |
| CN213956689U (en) * | 2021-01-18 | 2021-08-13 | 安徽万克姆科技有限公司 | Multifunctional air tightness detector |
| CN113251458A (en) * | 2021-06-07 | 2021-08-13 | 西安西热节能技术有限公司 | Heat supply and water supplement system and method based on circulating water at outlet of condenser of steam extraction unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160187308A1 (en) * | 2014-12-24 | 2016-06-30 | Huvis Water Corporation | Method and system for detecting boron ions using ion chromatography for online monitoring of steam generator tube leakage in light water reactor |
| US11519813B2 (en) * | 2019-08-08 | 2022-12-06 | Advanced Pressure Technology | Method for pressurized leak testing |
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2022
- 2022-04-28 CN CN202210462239.5A patent/CN114704777B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866829U (en) * | 2010-11-10 | 2011-06-15 | 河南省电力勘测设计院 | Heat exchange station system |
| CN103017231A (en) * | 2012-12-11 | 2013-04-03 | 华电电力科学研究院 | Heat supply network water circulating pump energy-saving driving system of thermal power plant |
| CN106017817A (en) * | 2016-05-17 | 2016-10-12 | 中广核检测技术有限公司 | Secondary side system for helium mass spectrum leakage detection equipment for heat-transfer pipe of nuclear steam generator |
| CN107389275A (en) * | 2017-08-04 | 2017-11-24 | 大唐东北电力试验研究所有限公司 | Heat exchangers for district heating leakage detection system and method |
| CN108533968A (en) * | 2018-05-09 | 2018-09-14 | 北京市燃气集团有限责任公司 | Steel gas pipe underground leak point positioning method based on search gas |
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| CN113251458A (en) * | 2021-06-07 | 2021-08-13 | 西安西热节能技术有限公司 | Heat supply and water supplement system and method based on circulating water at outlet of condenser of steam extraction unit |
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| CN114704777A (en) | 2022-07-05 |
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