CN102759432A - Leak detector of vacuum system - Google Patents
Leak detector of vacuum system Download PDFInfo
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- CN102759432A CN102759432A CN2012102711032A CN201210271103A CN102759432A CN 102759432 A CN102759432 A CN 102759432A CN 2012102711032 A CN2012102711032 A CN 2012102711032A CN 201210271103 A CN201210271103 A CN 201210271103A CN 102759432 A CN102759432 A CN 102759432A
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- leak detector
- vacuum system
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- hollow tube
- system leak
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Abstract
The invention belongs to the technical field of leak detection for pipelines of vacuum systems and particularly relates to a leak detector of a vacuum system. The leak detector comprises a detection part, a connection part and a sensing device, wherein the connecting part is provided with a hollow pipe, the detection part is provided with a detection hole, one end of the hollow pipe is connected with the detection hole of the detection part, an air runner is formed between the detection hole and the hollow pipe, and the sensing device is arranged at the other end of the hollow pipe. When the leak detector is used, a unit is unnecessary to decelerate and stop and can be used under a normal operation state, not only is time consumption prevented, but also losses caused by continuous top can be reduced, the cost can be saved, furthermore, the personal safety of workers can be guaranteed and leaks can be rapidly detected and handled as soon as possible.
Description
Technical field
The invention belongs to vacuum system pipeline leak detection technology field, particularly the vacuum system leak detector.
Background technology
The vacuum system of power plant is mainly liquid-ring type machinery vacuum pump, continuously gets rid of the incondensable gas in the turbine vacuum system when cylinder and condenser are set up certain vacuum with normal operation during startup, keeps the vacuum of condenser.The vacuum leak phenomenon of electricity condenser; Major part occurs in copper pipe and flange place; Copper pipe is because long-term use meeting because of corrosion explosion takes place or perforation is revealed; And flange can because screw fix undertighten or O-ring seal problem and reveal, the leakage of vacuum system can cause machine idle running or vacuum-load discontented, influences normal running.When electric condenser copper tube flange took place to reveal, traditional way was to shut down the leakage detection of pouring water, behind the unit outage; Drop to below 50 degree etc. delivery temperature; Stop recirculated water and drain condenser water side recirculated water, at vapour lateral irrigation water, the place that is the generation leakage that inspection copper pipe two ends have water to spill.But this method of operating length consuming time is not only lost generated energy, also causes a large amount of coal gas diffusions, wastes energy and contaminated environment.
Chinese patent document CN101876581A discloses the method for finding leak source that the plant condenser copper pipe is revealed, and is mainly used in the leak detection of copper pipe, takes place to reveal to be; Take to drop to 80% rated load, condenser is half of stops transport, and judges to reveal according to index situation such as sodium ions content, electrical conductivity, hardness to occur in which side; Investigate and prosecute and reveal the rear flank, open this half side two ends wicket, drain water; Side at condenser is shut the copper pipe mouth of pipe with preservative film; Pursue the inspection of root pipe at opposite side with candle flame, because the pipe that takes place to reveal has vacuum leak, under the interference that does not have extraneous wind-force; Flame arrives the copper pipe place that reveals, can obviously direction skew in pipe.This method before leak detection also need unit carry out to a certain degree fall stop and other the operation, still can influence the normal operation of unit, and problem consuming time still can not get effective solution.
Summary of the invention
The object of the present invention is to provide the vacuum system leak detector, it has simple in structure, and is easy to use, detects fast, need not fall the shutdown group during use, time saving and energy saving characteristics.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
The vacuum system leak detector; Comprise test section, connecting portion and induction installation; Said connecting portion is provided with hollow tube, and said test section is provided with and detects the hole, and an end of said hollow tube is connected with the detection hole of said test section; Form air flow channel between said detection hole and the said hollow tube, said induction installation places the other end of said hollow tube.
Wherein, said test section is curved steel tank, the detection faces of steel tank with treat that the flange of leakage detection or pipeline fit tightly, the middle part of said steel tank is located in said detection hole.
Wherein, the size in said detection hole is 10mm.
Wherein, the detection faces of said steel tank is provided with sealing gasket.
Wherein, said sealing gasket is an O-ring seal.
Wherein, said connecting portion is a telescopic tube.
Wherein, said connecting portion and said test section are spirally connected, and said detection is provided with internal thread in the hole.
Wherein, said induction installation is the candle of lighting, and the flame front of candle is aimed at the mouth of pipe of said hollow tube.
Wherein, said induction installation is a balloon, and balloon is enclosed within the end of said hollow tube.
Wherein, the socket place of said balloon and said hollow tube is provided with sealed fixing device.
Beneficial effect of the present invention: vacuum system leak detector; Comprise test section, connecting portion and induction installation; Said connecting portion is provided with hollow tube, and said test section is provided with and detects the hole, and an end of said hollow tube is connected with the detection hole of said test section; Form air flow channel between said detection hole and the said hollow tube, said induction installation places the other end of said hollow tube.Especially be directed against some in the space that unit high temperature, pipeline gather, the staff can't then use the present invention to check effectively easily near carrying out leakage detection at flange; Move test section along pipeline or flange, when move to leakage LZT, according to the principle of high-low pressure air flow; Detect the hole and communicate with the hollow tube of connecting portion, air communication is crossed the induction installation that air flow channel arrives the other end of hollow tube, and induction installation can confirm that just this place belongs to leakage position; The staff just can keep in repair, and when use is of the present invention, need not fall the shutdown group; Unit can use under the normal operation state, neither can be consuming time, can also lower the loss that continues to stop; Practice thrift cost, also can guarantee staff's personal safety, leakage detection and processing fast as early as possible.
Description of drawings
Fig. 1 is the structural representation of vacuum system leak detector embodiment one of the present invention.
Fig. 2 is the vertical view of vacuum system leak detector embodiment one of the present invention.
Fig. 3 is the structural representation of vacuum system leak detector embodiment two of the present invention.
Reference numeral:
1---test section 2---connecting portion 3---induction installation 4---detection hole.
Embodiment
Below in conjunction with accompanying drawing the present invention is carried out detailed description.
embodiment one.
The vacuum system leak detector; Comprise test section 1, connecting portion 2 and induction installation 3; Said connecting portion 2 is provided with hollow tube, and said test section 1 is provided with and detects hole 4, and an end of said hollow tube is connected with the detection hole 4 of said test section 1; Form air flow channel between said detection hole 4 and the said hollow tube, said induction installation 3 places the other end of said hollow tube.Especially be directed against some in the space that unit high temperature, pipeline gather, the staff can't be near carrying out leakage detection at flange, and then practical the present invention can check effectively easily; Move test section 1 along pipeline or flange, when move to leakage LZT, according to the principle of high-low pressure air flow; Detect hole 4 and communicate with the hollow tube of connecting portion 2, air communication is crossed the induction installation 3 that air flow channel arrives the other end of hollow tube, and induction installation 3 can confirm that just this place belongs to leakage position; The staff just can keep in repair; When use is of the present invention, the shutdown group need not fallen, and unit can use under the normal operation state.
Said test section 1 is curved steel tank, the detection faces of steel tank with treat the flange of leakage detection or pipeline is closely connected closes, the middle part of said steel tank is located in said detection hole 4.The detection faces of steel tank is done in the arc-shaped according to the shape of pipeline and flange, detection faces can be close to or flange when detecting, and guarantees accurately to detect the place of leakage.
The size in said detection hole 4 is 10mm.The sensitivity that the size influence in aperture detects, the aperture is too little, the omission situation can occur, and the aperture is too big, then bad affirmation leak position.
The detection faces of said steel tank is provided with sealing gasket.Can be when detecting, pipeline or flange play sealing function, the sensitivity of raising detection when contact with the detection faces of steel tank.
Concrete, said sealing gasket is an O-ring seal.The sealing property of cushion rubber is better, and changes conveniently, and cost is lower.
Said connecting portion 2 is spirally connected with said test section 1, is provided with internal thread in the said detection hole 4, and the link of said connecting portion 2 is provided with corresponding external thread.Connecting portion 2 adopts the mode that is spirally connected with test section 1, can change the connecting portion 2 of different length according to the demand that detects, easy accessibility.
The candle of said induction installation 3 for lighting, the flame front of candle is aimed at the mouth of pipe of said hollow tube, and the induction installation 3 that present embodiment uses is candle; During detection, the end of the hollow pipeline of the flame front of the candle of lighting aligning connecting portion 2, when having detected vacuum leak; According to the air current flow principle, candle flame can squint, even extinguishes; Can judge that then this place belongs to leak site, this kind method is revealed induction as fast the most direct mode and is detected.
embodiment two.
The difference of present embodiment and embodiment one is: said connecting portion 2 is telescopic tube.Connecting portion 2 can stretch, just can be when detecting the length of regulated at will connecting portion 2 so that adapt to the detection of not comprovincial pipeline and flange.
Said induction installation 3 is a balloon, and balloon is enclosed within the end of said hollow tube.Can have bigger inflammable hidden danger in the power plant, therefore need control naked light, the induction installation 3 of present embodiment is a balloon; The soft skin balloon of balloon for having inflated; Normal condition is spherical, when the air pressure in pinching pressure or balloon is lower than outside air pressure, and the balloon flat and distortion of suction automatically.During detection, be enclosed within the end of connecting portion 2 hollow tubes to balloon, then near pipeline to be detected or flange, in the LZT having detected leakage, balloon can deform because of vacuum action, can judge this place's leakage.Use balloon to detect and to avoid the use of naked light, use safer.
The socket place of said balloon and said hollow tube is provided with sealed fixing device.Make balloon more firm with being connected of hollow tube, better tightness detects sensitive more.The sealing stationary installation can be used rope, bungee or other stationary installations.
Unaccounted in the present embodiment characteristic adopts the explanation among the embodiment one, no longer gives unnecessary details at this.
Should be noted that at last; Above true example is only in order to explain technical scheme of the present invention; But not to the restriction of this practicality protection domain, although with reference to preferred embodiment the present invention has been done detailed explanation, those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical scheme of the present invention.
Claims (10)
1. vacuum system leak detector; It is characterized in that: comprise test section, connecting portion and induction installation; Said connecting portion is provided with hollow tube, and said test section is provided with and detects the hole, and an end of said hollow tube is connected with the detection hole of said test section; Form air flow channel between said detection hole and the said hollow tube, said induction installation places the other end of said hollow tube.
2. vacuum system leak detector according to claim 1 is characterized in that: said test section is curved steel tank, the detection faces of steel tank with treat that the flange of leakage detection or pipeline fit tightly, the middle part of said steel tank is located in said detection hole.
3. vacuum system leak detector according to claim 2 is characterized in that: the size in said detection hole is 10mm.
4. vacuum system leak detector according to claim 3 is characterized in that: the detection faces of said steel tank is provided with sealing gasket.
5. vacuum system leak detector according to claim 4 is characterized in that: said sealing gasket is an O-ring seal.
6. vacuum system leak detector according to claim 1 is characterized in that: said connecting portion is a telescopic tube.
7. vacuum system leak detector according to claim 1 is characterized in that: said connecting portion and said test section are spirally connected, and said detection is provided with internal thread in the hole, and the link of said connecting portion is provided with corresponding external thread.
8. vacuum system leak detector according to claim 1 is characterized in that: said induction installation is the candle of lighting, and the flame front of candle is aimed at the mouth of pipe of said hollow tube.
9. vacuum system leak detector according to claim 1 is characterized in that: said induction installation is a balloon, and balloon is enclosed within the end of said hollow tube.
10. vacuum system leak detector according to claim 9 is characterized in that: the socket place of said balloon and said hollow tube is provided with sealed fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102711032A CN102759432A (en) | 2012-07-31 | 2012-07-31 | Leak detector of vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102711032A CN102759432A (en) | 2012-07-31 | 2012-07-31 | Leak detector of vacuum system |
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| Publication Number | Publication Date |
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| CN102759432A true CN102759432A (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102711032A Pending CN102759432A (en) | 2012-07-31 | 2012-07-31 | Leak detector of vacuum system |
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| CN (1) | CN102759432A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682540A (en) * | 2018-12-10 | 2019-04-26 | 安徽金禾实业股份有限公司 | A kind of turbine condenser leaks online leakage inspection method and device |
Citations (10)
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|---|---|---|---|---|
| JPS5657930A (en) * | 1979-10-17 | 1981-05-20 | Toshiba Corp | Leak detector for flange joint |
| JPS58202854A (en) * | 1982-05-22 | 1983-11-26 | Osaka Gas Co Ltd | Apparatus and method for testing joint of piping from outside |
| US4557139A (en) * | 1984-07-31 | 1985-12-10 | Loomis International Inc. | Leak detection method and apparatus |
| CN2033900U (en) * | 1987-12-18 | 1989-03-08 | 大庆石油管理局油田建设公司 | Portable vacuum leak detector for weld seams on pipeline |
| JPH02154132A (en) * | 1988-12-06 | 1990-06-13 | Toko Seiki Kk | Air leak detector for negative pressure part |
| CN2159021Y (en) * | 1993-03-01 | 1994-03-16 | 新乡市煤气公司 | Household gas leakage-detecting device |
| CN2881584Y (en) * | 2006-03-15 | 2007-03-21 | 上海外高桥造船有限公司 | Vacuum leakage detector |
| CN101713698A (en) * | 2009-07-27 | 2010-05-26 | 山东大学 | Vacuum leak detection system |
| CN101876581A (en) * | 2009-12-23 | 2010-11-03 | 南京钢铁股份有限公司 | Method for finding leak source of copper tube leakage of condenser in power plant |
| CN201757696U (en) * | 2010-03-10 | 2011-03-09 | 中国科学院等离子体物理研究所 | Low temperature pipeline welding bead leak detection tool |
-
2012
- 2012-07-31 CN CN2012102711032A patent/CN102759432A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5657930A (en) * | 1979-10-17 | 1981-05-20 | Toshiba Corp | Leak detector for flange joint |
| JPS58202854A (en) * | 1982-05-22 | 1983-11-26 | Osaka Gas Co Ltd | Apparatus and method for testing joint of piping from outside |
| US4557139A (en) * | 1984-07-31 | 1985-12-10 | Loomis International Inc. | Leak detection method and apparatus |
| CN2033900U (en) * | 1987-12-18 | 1989-03-08 | 大庆石油管理局油田建设公司 | Portable vacuum leak detector for weld seams on pipeline |
| JPH02154132A (en) * | 1988-12-06 | 1990-06-13 | Toko Seiki Kk | Air leak detector for negative pressure part |
| CN2159021Y (en) * | 1993-03-01 | 1994-03-16 | 新乡市煤气公司 | Household gas leakage-detecting device |
| CN2881584Y (en) * | 2006-03-15 | 2007-03-21 | 上海外高桥造船有限公司 | Vacuum leakage detector |
| CN101713698A (en) * | 2009-07-27 | 2010-05-26 | 山东大学 | Vacuum leak detection system |
| CN101876581A (en) * | 2009-12-23 | 2010-11-03 | 南京钢铁股份有限公司 | Method for finding leak source of copper tube leakage of condenser in power plant |
| CN201757696U (en) * | 2010-03-10 | 2011-03-09 | 中国科学院等离子体物理研究所 | Low temperature pipeline welding bead leak detection tool |
Non-Patent Citations (1)
| Title |
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| 韩天祥 等: ""汽机真空系统检漏方法综述"", 《华东电力》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682540A (en) * | 2018-12-10 | 2019-04-26 | 安徽金禾实业股份有限公司 | A kind of turbine condenser leaks online leakage inspection method and device |
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Owner name: DONGGUAN NINE DRAGONS PAPER HOLDINGS LIMITED. Free format text: FORMER OWNER: DONGGUAN DILONG PAPER INDUSTRY CO., LTD. Effective date: 20130725 Free format text: FORMER OWNER: DONGGUAN TIANLONG PAPER INDUSTRY CO., LTD. DONGGUAN HAILONG PAPER CO., LTD. DONGGUAN NINE DRAGONS PAPER HOLDINGS LIMITED. Effective date: 20130725 |
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Effective date of registration: 20130725 Address after: 523000 Guangdong city in Dongguan Province Ma Er Cun, Dongguan Nine Dragons Paper Co. Ltd. Applicant after: Dongguan Nine Dragons Paper Co., Ltd. Address before: 523000 Guangdong Province, Dongguan City Ma Village Dragon Dongguan Paper Co. Ltd. Applicant before: Dongduan Land Dragon Paper Industry Co., Ltd. Applicant before: Dongguan Tianlong Paper Industry Co., Ltd. Applicant before: Dongguan Hailong Paper Co., Ltd. Applicant before: Dongguan Nine Dragons Paper Co., Ltd. |
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Application publication date: 20121031 |