CN202305154U - Leakage detection device for heat transfer tube of heat exchanger - Google Patents
Leakage detection device for heat transfer tube of heat exchanger Download PDFInfo
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- CN202305154U CN202305154U CN2011204470686U CN201120447068U CN202305154U CN 202305154 U CN202305154 U CN 202305154U CN 2011204470686 U CN2011204470686 U CN 2011204470686U CN 201120447068 U CN201120447068 U CN 201120447068U CN 202305154 U CN202305154 U CN 202305154U
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Abstract
The utility model relates to a leakage detection device for a heat transfer tube of a heat exchanger. The leakage detection device is characterized in that the leakage detection device comprises a air inlet nozzle (1), a pressure regulating valve (2), a flow meter, two ends of a three-way valve (8), a first shutoff valve (11), a filter (12), a second shutoff valve (13), an inflating nozzle (14) and a heat transfer tube (16) which are sequentially connected through hoses, a pressure gauge (9) and a thermometer (10) are connected between the three-way valve (8) and the first shutoff valve (11), an exhaust nozzle (7) is connected with the third end of the three-way valve (8), soft rubber sealing plugs are installed at the two ends of the heat transfer tube, one soft rubber sealing plug is provided with a through hole (17) and the external end of the through hole (17) is connected with the inflating nozzle (14). The leakage detection device for the heat transfer tube of the heat exchanger has the advantages that the structure is simple, the device is convenient to use, and the damage and the leakage rate of the heat transfer tube of the heat exchanger can be rapidly and accurately determined.
Description
Technical field
The utility model relates to the pick-up unit that heat transfering tube of heat exchanger leaks, and is mainly used in the detection of heat interchanger in the commercial production (like the steam generator in the nuclear power plant, condenser, low pressure and high-pressure heater etc.).
Background technology
Heat interchanger is used a lot in commercial production, is example with the nuclear power plant, and steam generator, condenser, low pressure and high-pressure heater etc. are arranged.In operational process, owing to reasons such as fluid scouring and material corrosions, heat-transfer pipe is attenuate or the local perforation defective that produces gradually, can cause the problems such as leakage, water quality variation of radiomaterial, influences unit safety operation and economic benefit.Introduce the PWR nuclear power plant statistics to 79 operations in 1977 according to data, there have 34 heat-transfer pipe of evaporator to take place to be damaged, and accounting for had 172 evaporators that similar problem took place in 205 block responses heap in 43%, 1992 year, accounts for 83.9%.The evaporator fault is to cause unplanned shutdown, the major reason of capacity factor measure loss.
Great majority adopt eddy current inspection method to carry out the detection of heat-transfer pipe fault at present.When EDDY CURRENT,, evaluate the degree of depth of defective usually with the phasing degree of signal because of between phasing degree and the depth of defect correlativity being arranged.In the EDDY CURRENT standard, all the phasing degree is set at 40 degree at home and abroad, yet is not all to be 40 degree at the phasing degree of actual detected middle punch defective, and error is bigger, can not judge that perforation still is the tube wall attenuation, more is not sure of leakage rate.This shows that EDDY CURRENT has inadequate natural endowment to the judgement of perforation defective.
Summary of the invention
In order to overcome the defective of EDDY CURRENT, the utility model provides a kind of damaged device that leaks of Exchanger Tubes of fast, accurately measuring, and can quantitatively measure the leakage rate of heat-transfer pipe.
The technical scheme of the utility model is: a kind of Exchanger Tubes leak detecting device; It is characterized in that: the two ends, first stop valve, filtrator, second stop valve, charging connector and the heat-transfer pipe that comprise the admission piece that is linked in sequence successively through flexible pipe, pressure regulator valve, flowmeter, T-valve; Between this T-valve and first stop valve, be connected to tensimeter and thermometer; The 3rd termination at this T-valve has exhaust nozzle; At the two ends of this heat-transfer pipe the soft rubber sealing-plug is housed, one of them soft rubber sealing-plug is provided with through hole, and the outer end of this through hole is connected with described charging connector.
Described flowmeter is composed in parallel by wide range flowmeter and a small amount of range of flow meter; Also be parallel with gas-filled tube at this wide range flowmeter and a small amount of range of flow meter two ends; At the wide range flowmeter of parallel connection, be connected through four-way valve between range of flow meter and gas-filled tube and the described pressure regulator valve in a small amount.
Described pressure regulator valve, four-way valve, wide range flowmeter, a small amount of range of flow meter, gas-filled tube, T-valve, tensimeter, thermometer and first stop valve are installed in the casing, and the handle of pressure regulator valve, four-way valve, T-valve and first stop valve is contained in the outside of casing one side; The display of this wide range flowmeter, a small amount of range of flow meter, tensimeter, thermometer is contained on the panel of this casing; Admission piece and exhaust nozzle are installed in casing one side.
The utility model has the advantages that: simple in structure, easy to use, can fast, accurately measure Exchanger Tubes breakage and leakage rate.
Description of drawings
Fig. 1 is the formation synoptic diagram of Exchanger Tubes leak detecting device.
Embodiment
As shown in Figure 1, the utility model by admission piece 1, pressure regulator valve 2, four-way valve 3, in a small amount range of flow meter 4, wide range flowmeter 5, gas-filled tube 6, T-valve 8, exhaust nozzle 7, tensimeter 9, thermometer 10, first stop valve 11, second stop valve 13, filter mouthfuls 12, charging connector 14, seal plug 15 and heat-transfer pipe 16 form.All connect and compose test macro between these instrument and the parts by plastic flexible pipe.Test(ing) medium is with pressurized air or nitrogen; System's order of connection is undertaken by the gas flow route: test gas is connected to pressure regulator valve 2, four-way valve 3 by admission piece 1 through flexible pipe successively; Four-way valve parallel connection in 3 minutes three tunnel is respectively through range of flow meter 4, wide range flowmeter 5, gas-filled tube 6 advance an end of T-valve 8 in a small amount; Second end of T-valve 8 is connected to an end of first stop valve 11 through flexible pipe, is connected to tensimeter 9 and thermometer 10 between the T-valve 8 and first stop valve 11.T-valve 8 the 3rd end route flexible pipe is connected to exhausr port 7.The other end of first stop valve 11 is linked to each other with an end of heat-transfer pipe 16 through filtrator 12, stop valve 13, charging connector 14 by flexible pipe successively.Soft rubber sealing-plug 15 is equipped with at heat-transfer pipe 16 two ends, and the center of one of them sealing-plug 15 has through hole 17 to be used for being connected with charging connector 14, is convenient to test gas and gets into heat-transfer pipe 16.
Present embodiment is contained in the part in the dotted line among Fig. 1 (except filter 12, stop valve 13, charging connector 14 and the part the heat-transfer pipe 16) in the instrument box; Need the handle of pressure regulator valve 2, four-way valve 3, T-valve 8 and the stop valve 11 of operation to be contained in casing one side outside in the mensuration; There are a small amount of range of flow meter 4 of data indication and the display of wide range flowmeter 5, tensimeter 9, thermometer 10 to be contained on the panel of casing, are convenient to observe.Admission piece 1 is installed in casing one side with exhaust nozzle 7, inside and outside casing.
The instrument selection of present embodiment is following:
| Instrument | Measurement range | Error |
| A small amount of range of flow meter (4) | 0-500 Nml/ | 3%mv |
| Wide range flowmeter (5) | 0-2000 Nml/ | 3%mv |
| Tensimeter (9) | 0-1000kpa | 0.1% |
| Thermometer (10) | 0-50 ℃ | 1% |
When using the utility model, system under test (SUT) is pressurized to the required pressure of test, regulates pressure regulator valve 2, when pressure stability was constant, big or small range flowmeter 5 or 4 displayed value were the leakage rate of tested heat-transfer pipe.When leakage rate hour, with range of flow meter 4 in a small amount; When leakage rate is big, with wide range flowmeter 5.The flowmeter conversion is switched through four-way valve 3.
Claims (3)
1. Exchanger Tubes leak detecting device; It is characterized in that: the two ends, first stop valve (11), filtrator (12), second stop valve (13), charging connector (14) and the heat-transfer pipe (16) that comprise the admission piece (1) that is linked in sequence successively through flexible pipe, pressure regulator valve (2), flowmeter, T-valve (8)
Between this T-valve (8) and first stop valve (11), be connected to tensimeter (9) and thermometer (10),
The 3rd termination at this T-valve (8) has exhaust nozzle (7), at the two ends of this heat-transfer pipe the soft rubber sealing-plug is housed, and one of them soft rubber sealing-plug is provided with through hole (17), and the outer end of this through hole (17) is connected with described charging connector (14).
2. Exchanger Tubes leak detecting device according to claim 1 is characterized in that, described flowmeter is composed in parallel by wide range flowmeter (5) and a small amount of range of flow meter (4); Also be parallel with gas-filled tube (6) at this wide range flowmeter (5) and a small amount of range of flow meter (4) two ends; At the wide range flowmeter (5) of parallel connection, be connected through four-way valve (3) between range of flow meter (4) and gas-filled tube (6) and the described pressure regulator valve (2) in a small amount.
3. Exchanger Tubes leak detecting device according to claim 2; It is characterized in that; Described pressure regulator valve (2), four-way valve (3), wide range flowmeter (5), a small amount of range of flow meter (4), gas-filled tube (6), T-valve (8), tensimeter (9), thermometer (10) and first stop valve (11) are installed in the casing, and the handle of pressure regulator valve (2), four-way valve (3), T-valve (8) and first stop valve (11) is contained in the outside of casing one side; The display of this wide range flowmeter (5), a small amount of range of flow meter (4), tensimeter (9), thermometer (10) is contained on the panel of this casing; This admission piece (1) and exhaust nozzle (7) are installed in casing one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204470686U CN202305154U (en) | 2011-11-14 | 2011-11-14 | Leakage detection device for heat transfer tube of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204470686U CN202305154U (en) | 2011-11-14 | 2011-11-14 | Leakage detection device for heat transfer tube of heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305154U true CN202305154U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204470686U Expired - Lifetime CN202305154U (en) | 2011-11-14 | 2011-11-14 | Leakage detection device for heat transfer tube of heat exchanger |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063371A (en) * | 2013-01-04 | 2013-04-24 | 中国核动力研究设计院 | Intensive tube bundle weld detection device and detection method |
| CN103440890A (en) * | 2013-09-11 | 2013-12-11 | 中国原子能科学研究院 | Plate heat exchanger leakage detecting system and detecting method |
| CN103928066A (en) * | 2014-03-24 | 2014-07-16 | 国核电站运行服务技术有限公司 | Method for detecting leakage of heat-transfer pipe of condenser in nuclear power plant and differential pressure leakage detecting system |
| CN104457061A (en) * | 2014-10-29 | 2015-03-25 | 江苏天舒电器有限公司 | Nitrogen charging device used for leakage detection of gas collecting pipe assembly |
| CN104729813A (en) * | 2015-03-16 | 2015-06-24 | 舞阳钢铁有限责任公司 | Rapid leakage detection tool and detection and repair process of pipe type heat exchanger |
| CN105758593A (en) * | 2016-05-17 | 2016-07-13 | 中广核检测技术有限公司 | Helium mass spectrum leakage detection equipment for nuclear evaporator heat conduction pipe and quantitative positioning method |
| CN104422570B (en) * | 2013-09-04 | 2017-02-08 | 珠海格力电器股份有限公司 | Inspection device and inspection method for oil return hole of steam and liquid separator |
| WO2017075897A1 (en) * | 2015-11-06 | 2017-05-11 | 广船国际有限公司 | Negative-pressure airtightness testing apparatus and method |
| CN107782501A (en) * | 2016-08-31 | 2018-03-09 | 广东韶钢松山股份有限公司 | A kind of heat pipe-type faults of preheater diagnostic method |
| CN107991039A (en) * | 2016-10-27 | 2018-05-04 | 中航天水飞机工业有限责任公司 | Leakage measuring instrumentation equipment |
| CN108562413A (en) * | 2018-06-13 | 2018-09-21 | 武汉金丰汽配有限公司 | A kind of air tightness of pipe fitting detection workbench |
| CN110470436A (en) * | 2019-08-21 | 2019-11-19 | 三门核电有限公司 | A kind of detection device and its detection method for pneumatic actuator leakproofness |
-
2011
- 2011-11-14 CN CN2011204470686U patent/CN202305154U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063371B (en) * | 2013-01-04 | 2015-06-03 | 中国核动力研究设计院 | Intensive tube bundle weld detection device and detection method |
| CN103063371A (en) * | 2013-01-04 | 2013-04-24 | 中国核动力研究设计院 | Intensive tube bundle weld detection device and detection method |
| CN104422570B (en) * | 2013-09-04 | 2017-02-08 | 珠海格力电器股份有限公司 | Inspection device and inspection method for oil return hole of steam and liquid separator |
| CN103440890A (en) * | 2013-09-11 | 2013-12-11 | 中国原子能科学研究院 | Plate heat exchanger leakage detecting system and detecting method |
| CN103928066B (en) * | 2014-03-24 | 2016-07-06 | 国核电站运行服务技术有限公司 | Nuclear power plant's condenser heat-transfer pipe leak hunting method and pressure reduction leak detection system |
| CN103928066A (en) * | 2014-03-24 | 2014-07-16 | 国核电站运行服务技术有限公司 | Method for detecting leakage of heat-transfer pipe of condenser in nuclear power plant and differential pressure leakage detecting system |
| CN104457061B (en) * | 2014-10-29 | 2016-09-28 | 江苏天舒电器有限公司 | A kind of nitrogen charging device for collecting pipe component leak detection |
| CN104457061A (en) * | 2014-10-29 | 2015-03-25 | 江苏天舒电器有限公司 | Nitrogen charging device used for leakage detection of gas collecting pipe assembly |
| CN104729813A (en) * | 2015-03-16 | 2015-06-24 | 舞阳钢铁有限责任公司 | Rapid leakage detection tool and detection and repair process of pipe type heat exchanger |
| WO2017075897A1 (en) * | 2015-11-06 | 2017-05-11 | 广船国际有限公司 | Negative-pressure airtightness testing apparatus and method |
| CN105758593A (en) * | 2016-05-17 | 2016-07-13 | 中广核检测技术有限公司 | Helium mass spectrum leakage detection equipment for nuclear evaporator heat conduction pipe and quantitative positioning method |
| CN105758593B (en) * | 2016-05-17 | 2018-05-29 | 中广核检测技术有限公司 | Method for positioning and detecting water leakage is quantified using nuclear boiler heat-transfer pipe helium mass spectrum leak detection equipment |
| CN107782501A (en) * | 2016-08-31 | 2018-03-09 | 广东韶钢松山股份有限公司 | A kind of heat pipe-type faults of preheater diagnostic method |
| CN107991039A (en) * | 2016-10-27 | 2018-05-04 | 中航天水飞机工业有限责任公司 | Leakage measuring instrumentation equipment |
| CN108562413A (en) * | 2018-06-13 | 2018-09-21 | 武汉金丰汽配有限公司 | A kind of air tightness of pipe fitting detection workbench |
| CN108562413B (en) * | 2018-06-13 | 2020-12-18 | 武汉金仑汽配有限公司 | Pipe fitting gas tightness detection workbench |
| CN110470436A (en) * | 2019-08-21 | 2019-11-19 | 三门核电有限公司 | A kind of detection device and its detection method for pneumatic actuator leakproofness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |