CN106546384B - A kind of transverse pipe initial cooler leakage inspection method - Google Patents
A kind of transverse pipe initial cooler leakage inspection method Download PDFInfo
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- CN106546384B CN106546384B CN201510591011.6A CN201510591011A CN106546384B CN 106546384 B CN106546384 B CN 106546384B CN 201510591011 A CN201510591011 A CN 201510591011A CN 106546384 B CN106546384 B CN 106546384B
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- leakage
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Abstract
The present invention relates to a kind of transverse pipe initial cooler leakage inspection methods, leak source is searched to primary cooler lower section, primary cooler upper section, primary cooler tube bank respectively, judge when primary cooler lower section: primary cooler lower section condensate pump is stopped, it closes the lower section condensate liquid of every primary cooler and cleans ammonium hydroxide, lower section primary cooler lower section water sealed tank incoming flow size is observed, the maximum primary cooler of incoming flow is the primary cooler of leakage；This primary cooler gas exit valve is turned off, while being vented primary cooler lower section water at low temperature, lower section water sealed tank incoming flow situation is then observed, if lower section water sealed tank no longer incoming flow, it is determined that the leakage of primary cooler lower section；The present invention realizes the thorough purpose of leakage detection, shortens primary cooler maintenance duration, disposably will can all check at one section of primary cooler leakage, significantly saves the leakage detection time, and remarkable in economical benefits, security risk substantially reduces.
Description
Technical field
The present invention relates to a kind of transverse pipe initial cooler leakage inspection methods.
Background technique
In process of coking, air blast process ammonia vol increase suddenly or slowly go up, it is necessary to entire ammonium hydroxide system into
Row investigation, it is determined whether there is extra water to enter in ammonium hydroxide system.Cooling is water-cooled for three sections inside primary cooler, most may be used
What can be leaked is exactly primary cooler, how to be checked by technique to primary cooler leakage, which platform primary cooler leakage confirmed
And which section leakage is the key that technique judgement in three sections of water.Primary cooler leakage preliminary judgement after need equipment to primary cooler into
Row maintenance, quickly finding out which root canal leakage is the key that thoroughly to solve.
Before, the case where primary cooler leakage detection can only be found the case where a large amount of leakages, small leakage be can not check at all, when discovery is a large amount of
When leakage, the case where seeing the method judgement leakage whether remained ammonia amount goes up that each primary cooler is stopped in turn,
It leans on u-shaped pipe law of connected vessels to carry out leakage detection before tube bank leakage detection, is connect on water blow-down pipe with one transparent plastic flexible pipe one,
One lifts consistent with primary cooler height, upper water will be given inside primary cooler, import penstock is closed, since primary cooler water pipe is let out
Water after leakage in pipe can be reduced, and when water leaks into leak source, water will stop leaking, according to law of connected vessels, pipe internal water
Liquid level is consistent with the height of outside plastic flexible pipe, judges the general location of water leakage roughly, opens primary cooler water cover plate to inside
Water pipe is checked by root, is blocked with rubber is stifled by each one, water pipe, is poured water in pipe with water pipe, the dough figurine under primary cooler
Hole has seen whether water leakage, judges the leakage of water pipe.The case where this method is not suitable for north of china in winter, is suitable for a large amount of leakages,
The case where small leakage, is not applicable, the method operate it is very slow, it is bothersome laborious, when being only applicable to a large amount of leak sources at one.
Summary of the invention
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a kind of transverse pipe initial cooler leakage inspection methods, save just
The time of cooler leakage detection shortens primary cooler maintenance duration.
To achieve the above object, the invention is realized by the following technical scheme:
A kind of transverse pipe initial cooler leakage inspection method, comprising the following steps:
1) segment search leak source under primary cooler:
Primary cooler lower section condensate pump is stopped, the lower section condensate liquid of every primary cooler is closed and cleans ammonium hydroxide, under observation
Section primary cooler lower section water sealed tank incoming flow size, the maximum primary cooler of incoming flow are the primary cooler of leakage；Turn off this primary cooler coal
Gas outlet valve, while it being vented primary cooler lower section water at low temperature, lower section water sealed tank incoming flow situation is then observed, if lower section water sealed tank
No longer incoming flow, it is determined that primary cooler lower section leakage；
2) segment search leak source on primary cooler:
The primary cooler upper section condensate liquid for having been switched off outlet valve, cleaning ammonium hydroxide and the sprinkling of top ammonium hydroxide are stopped, observed
Upper section primary cooler upper section water sealed tank incoming flow size, if upper section water sealed tank does not carry out flow specification, primary cooler upper section does not leak；If incoming flow,
Primary cooler recirculated water section is vented, then observes upper section water sealed tank incoming flow situation, if upper section water sealed tank no longer incoming flow, more than primary cooler
Hot water section does not leak；If upper section water sealed tank still incoming flow, judge that remaining hot water section leaks: recirculated water entrance valve opening is sent
Water observes upper section water sealed tank, if not incoming flow, recirculated water section is not leaked, and recirculated water section leaks if upper section water sealed tank incoming flow；
3) leak source is searched in primary cooler tube bank:
Primary cooler gas piping entrance blocks up blind plate, and the closing of bottom manhole, top desorption tube is closed, in primary cooler bottom people
Hole is installed the U that a height liquid seal is 20kPa and is sealed, and fills liquid in U envelope；It is passed through nitrogen in primary cooler shell side, it is just cold
Nitrogen pressure is no more than 20kPa in device；To tube bank each in each bobbin carriage pipe by five sense judgements, and sentenced with stethoscope
Which root canal of breaking is leaked.
Leakage situation is judged with the presence or absence of negative pressure by low temperature water out blow-down pipe, is then further confirmed that if it is negative pressure just
The leakage of cooler lower section.
Leakage situation is judged with the presence or absence of negative pressure by circulating water outlet blow-down pipe, is then further determined that if it is negative pressure just
Regenerator cycle water section or the leakage of remaining hot water section.
The liquid summer filled in U envelope is water, and winter is anti-icing fluid.
Nitrogen pressure in primary cooler is observed by connecing a U-shaped manometer, by switching nitrogen tube shutter size
Adjust nitrogen pressure inside primary cooler.
Compared with prior art, the beneficial effects of the present invention are:
This method leakage detection is thorough, shortens primary cooler maintenance duration, can disposably will be whole at one section of primary cooler leakage
It checks, significantly save the leakage detection time, remarkable in economical benefits, security risk substantially reduces.
Detailed description of the invention
Fig. 1 is primary cooler artwork.
Fig. 2 is primary cooler lower section pipe leakage check process figure.
Fig. 3 is primary cooler upper section pipe leakage check process figure.
In figure: 1- transverse pipe initial cooler 2- lower section water sealed tank 3- upper section water sealed tank 4- lower section condenses the condensation of liquid bath 5- upper section
Liquid bath 6- lower section condensate pump 7- ammonia vessel.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings of the specification, it should be noted that implementation of the invention is unlimited
In the following embodiments and the accompanying drawings.
See Fig. 1-Fig. 3, a kind of transverse pipe initial cooler leakage inspection method can be by when finding that primary cooler part water pipe has leakage
Technique lookup is carried out according to the mode of upper and lower segment search leak source, primarily determines it is which section water pipe of which platform primary cooler is let out
Leakage, then primary cooler is thoroughly stopped and is targetedly checked, leak source is integrally searched into all tube banks of primary cooler, disposably
Determine which tube bank leakage, it is disposable to overhaul, specifically includes the following steps:
1) segment search leak source under primary cooler:
Primary cooler lower section condensate pump 6 is stopped, the lower section condensate liquid of every primary cooler is closed and cleans ammonium hydroxide, under observation
2 incoming flow size of section primary cooler lower section water sealed tank, the maximum primary cooler of incoming flow are the primary cooler of leakage；Turn off this primary cooler coal
Gas outlet valve, while it being vented primary cooler lower section water at low temperature, 2 incoming flow situation of lower section water sealed tank is then observed, if water seal is no longer
Incoming flow, it is determined that primary cooler lower section leakage；Leakage situation can also be judged with the presence or absence of negative pressure by low temperature water out blow-down pipe,
Then further confirm that primary cooler lower section is leaked if it is negative pressure.
2) segment search leak source on primary cooler:
The primary cooler upper section condensate liquid for having been switched off outlet valve, cleaning ammonium hydroxide and the sprinkling of top ammonium hydroxide are stopped, observed
3 incoming flow stream size of upper section primary cooler upper section water sealed tank, if upper section water sealed tank 3 does not carry out flow specification, primary cooler upper section does not leak；If
Primary cooler recirculated water section is vented, then observes 3 incoming flow situation of upper section water sealed tank by incoming flow, if the no longer incoming flow of upper section water sealed tank 3,
Primary cooler remaining hot water section does not leak；If the still incoming flow of upper section water sealed tank 3, judge that remaining hot water section leaks: by recirculated water entrance
Valve opening send water, observes upper section water sealed tank 3, if not incoming flow, recirculated water section is not leaked, and is followed if 3 incoming flow of upper section water sealed tank
The leakage of ring water section；Can also judge leakage situation with the presence or absence of negative pressure by circulating water outlet blow-down pipe, if it is negative pressure then into
One step determines primary cooler recirculated water section or the leakage of remaining hot water section.
3) leak source is searched in primary cooler tube bank:
Primary cooler gas piping entrance blocks up blind plate, and the closing of bottom manhole, top desorption tube is closed, in primary cooler bottom people
The U envelope of a 20kPa is installed in hole, and fills liquid in U envelope (summer is water, and winter is anti-icing fluid)；In primary cooler shell side
It is passed through nitrogen, nitrogen pressure is no more than 20kPa in primary cooler；Nitrogen pressure in primary cooler by connect a U-shaped manometer come
Observation adjusts nitrogen pressure inside primary cooler by switch nitrogen tube shutter size.
To tube bank each in each bobbin carriage pipe by five sense judgements, i.e., by observing, hearing taste, the modes such as hand is touched, listening
Judge any root canal leakage, most handy stethoscope carrys out which root canal leakage of auxiliary judgment, nail on after discovery leakage at tube bank both ends it is stifled, it is real
Now block leak source.
Claims (3)
1. a kind of transverse pipe initial cooler leakage inspection method, which comprises the following steps:
1) segment search leak source under primary cooler:
Primary cooler lower section condensate pump is stopped, the lower section condensate liquid of every primary cooler is closed and cleans ammonium hydroxide, at the beginning of observing lower section
Cooler lower section water sealed tank incoming flow size, the maximum primary cooler of incoming flow are the primary cooler of leakage；This primary cooler coal gas is turned off to go out
Mouth valve, while it being vented primary cooler lower section water at low temperature, lower section water sealed tank incoming flow situation is then observed, if lower section water sealed tank is no longer
Incoming flow, it is determined that primary cooler lower section leakage；Leakage situation can also be judged with the presence or absence of negative pressure by low temperature water out blow-down pipe,
Then further confirm that primary cooler lower section is leaked if it is negative pressure；
2) segment search leak source on primary cooler:
The primary cooler upper section condensate liquid for having been switched off outlet valve, cleaning ammonium hydroxide and the sprinkling of top ammonium hydroxide are stopped, upper section is observed
Primary cooler upper section water sealed tank incoming flow size, if upper section water sealed tank does not carry out flow specification, primary cooler upper section does not leak；It, will be first if incoming flow
The emptying of regenerator cycle water section, then upper section water sealed tank incoming flow situation is observed, if upper section water sealed tank no longer incoming flow, primary cooler remaining hot water
Section does not leak；If upper section water sealed tank still incoming flow, judge that remaining hot water section leaks: sending recirculated water entrance valve opening to water,
Upper section water sealed tank is observed, if not incoming flow, recirculated water section is not leaked, and recirculated water section leaks if upper section water sealed tank incoming flow；It can also
To judge leakage situation with the presence or absence of negative pressure by circulating water outlet blow-down pipe, then further determine that primary cooler is followed if it is negative pressure
Ring water section or the leakage of remaining hot water section；
3) leak source is searched in primary cooler tube bank:
Primary cooler gas piping entrance blocks up blind plate, the closing of bottom manhole, and top desorption tube is closed, and pacifies in primary cooler bottom manhole
It fills the U that a height liquid seal is 20kPa to seal, and fills liquid in U envelope；Nitrogen is passed through in primary cooler shell side, in primary cooler
Nitrogen pressure is no more than 20kPa；To tube bank each in each bobbin carriage pipe by five sense judgements, and which judges with stethoscope
Root canal leakage.
2. a kind of transverse pipe initial cooler leakage inspection method according to claim 1, which is characterized in that filled in U is sealed in step 3)
Full liquid summer is water, and winter is anti-icing fluid.
3. a kind of transverse pipe initial cooler leakage inspection method according to claim 1, which is characterized in that the nitrogen pressure in primary cooler
It is observed by connecing a U-shaped manometer, nitrogen pressure inside primary cooler is adjusted by switch nitrogen tube shutter size.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591011.6A CN106546384B (en) | 2015-09-17 | 2015-09-17 | A kind of transverse pipe initial cooler leakage inspection method |
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|---|---|---|---|
| CN201510591011.6A CN106546384B (en) | 2015-09-17 | 2015-09-17 | A kind of transverse pipe initial cooler leakage inspection method |
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| CN106546384A CN106546384A (en) | 2017-03-29 |
| CN106546384B true CN106546384B (en) | 2019-01-08 |
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| CN111561661B (en) * | 2020-04-29 | 2021-12-24 | 鞍钢股份有限公司 | Method for quickly replacing residual hot water return valve of gas primary cooler |
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| JPS6232334A (en) * | 1985-08-05 | 1987-02-12 | Nippon Kokan Kk <Nkk> | Detection of leakage from tube of gas cooler |
| CN103307925A (en) * | 2013-05-22 | 2013-09-18 | 济钢集团有限公司 | Transverse tube-type cooling tower with leakage testing and overhauling function and overhauling and leakage testing method |
| CN104006938B (en) * | 2014-06-06 | 2016-08-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method for detecting of horizontal water-tube cooler leakage point |
| CN104006937B (en) * | 2014-06-06 | 2016-08-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of disposable method for detecting of horizontal water-tube cooler many places leakage point |
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Effective date of registration: 20210825 Address after: 114000 Angang Xiaodongmen, Lishan District, Anshan City, Liaoning Province Patentee after: Anshan Chemical Technology Co.,Ltd. Address before: 114000 No. 1 ring steel road, Tiexi District, Liaoning, Anshan Patentee before: ANGANG STEEL Co.,Ltd. |
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