CN103480599A - Method and device thereof for cleaning turbine blade at low temperature - Google Patents
Method and device thereof for cleaning turbine blade at low temperature Download PDFInfo
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- CN103480599A CN103480599A CN201310394191.XA CN201310394191A CN103480599A CN 103480599 A CN103480599 A CN 103480599A CN 201310394191 A CN201310394191 A CN 201310394191A CN 103480599 A CN103480599 A CN 103480599A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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Abstract
The invention provides a method for cleaning a turbine blade at a low temperature. The method comprises the steps of preparing a cleaning liquid agent, adding the cleaning liquid agent into a dosing slot, pressurizing the cleaning liquid agent with a diaphragm pump and mixing with soft water generated by a thermal electric water storing device; introducing into a spray nozzle to form mist-like liquid drops, distributing in steam, fully mixing with a mixer, cleaning the salt dirty of the turbine blade and recycling and cooling steam. The invention also provides a cleaning device, which comprises a steam engine and a steam condenser connected to the steam discharging port of a turbine; the steam engine is communicated with the spray nozzle by a cooler; the inlet end of the spray nozzle is respectively connected with the thermal electric water storing device and the diaphragm pump for pressurizing the cleaning liquid agent in the dosing slot; the outlet end of the spray nozzle is connected with the inlet end of the turbine by the mixer. The targeted cleaning liquid agent is prepared according to the components of the salt dirty and the turbine blade is cleaned by mixing the cleaning liquid agent, the soft water and the steam, so the aim of fast removing the salt dirty on the blade is achieved, stopping is not needed in the cleaning process, and the production economical benefits are improved.
Description
Technical field
The present invention relates to the steam turbine technology field, be specifically related to a kind of method and device thereof of Low-temperature cleaning turbine blade.
Background technology
In modern enterprise, steam turbine is as indispensable power running equipment, with advantages such as single-machine capacity is large, thermal transition efficiency is high, vapor flow high-speed and continuous, long service life, now apply to widely the fields such as metallurgy, chemical industry, pharmacy, electric power, boats and ships, nuclear power.
Steam is as the power source of steam turbine, and the quality of its quality directly affects the size of its thermal transition efficiency, and then is restricting the height of load.If the poor quality of steam can cause the blade salt crust fouling of steam turbine, and then reduce the circulation of steam, and do not reach the rated speed of unit.The fouling of turbine blade salt crust seriously affects the size of load, if solve not in time, just there will be axial thrust increase, axial displacement to increase, and when serious, can cause blade to damage, and unit is forced to the possibility of stopping.So want regularly the salt crust on turbine blade to be cleaned.
In traditional handicraft for the cleaning of turbine blade, after great majority are chosen in the unit parking, it is pulled down to the rear giant dosing cleaning of using, its shortcoming has: the condition that, is limited by parking, it has not only wasted a large amount of time, also can bring loss economically to company; Two,, because blade-carrying rotor will remove cleaning, strengthened technical difficulty undoubtedly when the demolition, installation rotor, and be prone to the phenomenon of doing over again.Three, the high and low selection at the process high-pressure gun pressure cleaned is a difficult problem, and the low cleaning of hydraulic pressure is not thorough; The hydraulic pressure height can cause damage to a certain degree to blade.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention discloses a kind of method and device thereof of Low-temperature cleaning turbine blade.
A kind of method of Low-temperature cleaning turbine blade comprises the following steps:
(1) salt crust of getting on condenser tubulation outer wall is analyzed, and according to preparation after the composition of salt crust, cleans salt crust liquid medicine;
(2) liquid medicine in (1) is put into to dosing tank, through the membrane pump pressurization, make its pressure be not less than 5.0MPa, then the soft water produced with the thermoelectricity water storage device mixes;
(3) mixed liquor in (2) is passed into to nozzle and form vaporific drop;
(4) steam that steam engine produces is cooled to 220 ℃-250 ℃ through cooler, then the nozzle of flowing through, and makes vaporific drop and its preliminary mixing in (3);
(5) fully mix and be sprayed onto on turbine blade and cleaned salt crust by servo valve in blender through (4) preliminary liquid mixed;
(6) through clean steam later enter condenser cooling after recycling.
Further, in described step (1), liquid medicine is the hydrochloric acid that mass concentration is 3-5%.
Be provided with the Pressure gauge of adjusting its pressure and the flowmeter of controlling the liquid medicine flow after described step (2) septation pump; Be provided with the showering guilding valve for pressure release after described thermoelectricity water storage device.
The method of Low-temperature cleaning turbine blade of the present invention be the liquid medicine targetedly that will be prepared according to the salt crust composition and boiler soft water with pass through nozzle before power steam mixes, the liquid that makes its ejection is vaporific, in order to can be evenly distributed with in steam medium, the Low Temperature Steam formed after blender mixes again enters in steam turbine its blade is carried out to surface clean through servo valve, finally by after the condenser condensation, entering recover, is recycled.Cleaning method of the present invention only need stop and once its salt crust sample analysis be got final product, and in actual cleaning process, is not need to stop, and the economic loss that avoiding repeatedly stops causes, improved the production economy benefit.But also can be regulated the amount of liquid medicine and the pressure of membrane pump according to actual conditions, reach the purpose of getting salt crust on blade express developed.
Another object of the present invention is to provide a kind of device of realizing the method for above-mentioned Low-temperature cleaning turbine blade, comprise steam engine and the condenser that is connected to the turbine discharge mouth, described steam engine is communicated with nozzle by cooler, the arrival end of described nozzle is respectively with thermoelectricity water storage device for boiler soft water is provided, be connected for the port of export of the dosing tank that holds the dirty liquid medicine that desalts, and the port of export of described dosing tank is connected with nozzle by membrane pump; The port of export of described nozzle is connected with the arrival end of steam turbine by blender.
Further, described membrane pump is two outlets that are connected in parallel on dosing tank, and the import and export of described two membrane pumps is equipped with the first stop valve.
Further, the port of export of described dosing tank is provided with the first showering guilding valve.
Further, be provided with the first Pressure gauge, the first check (non-return) valve and flowmeter in the middle of the arrival end of the port of export of described membrane pump and nozzle.
Further, be provided with the second check (non-return) valve, the second showering guilding valve and the second Pressure gauge in the middle of the arrival end of the port of export of described thermoelectricity water storage device and nozzle.
Further, the soft water of described thermoelectricity water storage device with by entering nozzle after the second stop valve, screen pack, with the steam that steam engine produces, mixed successively after liquid medicine in dosing tank mixes.
Further, described blender is the duct type blender, and itself and steam turbine centre are provided with servo valve; Described condenser is connected with recover.
The course of work of this device is: first according to the composition of salt crust on turbine blade, prepare the concentration of cleaning salt crust hydrochloric acid liquid medicine, the concentration of general hydrochloric acid is 3-5%, and pressure and the liquid medicine flow of adjusting membrane pump, the soft water that liquid medicine produces with the thermoelectricity water storage device after the membrane pump pressurization first mixes; Mixed liquor enters in nozzle after stop valve, screen pack, form vaporific drop through nozzle and mixed with the steam produced by steam engine through nozzle, and then carry out the secondary mixing fully by servo valve, be sprayed onto on turbine blade and cleaned salt crust in the duct type blender; Enter condenser and enter in recover after cooling and carry out recycling finally by cleaning steam later.
In addition, in the situation that not salt crust fouling of steam turbine can be closed the second stop valve, cut off soft water and enter nozzle, and the boiler soft water that the thermoelectricity water storage device produces can continue to supply with soft water preheater.
So the present invention has following beneficial effect with respect to prior art:
1, the method for Low-temperature cleaning turbine blade of the present invention is first to pass through component and the content of the fouling of sample analysis salt crust, then, for component preparation liquid medicine, accomplishes the purpose of shooting the arrow at the target, cleaning up.
2, the method for Low-temperature cleaning turbine blade of the present invention only need be stopped and once its salt crust sample analysis be got final product, and in actual cleaning process, is not need to stop, and the economic loss that avoiding repeatedly stops causes, improved the production economy benefit.
3, the present invention will contain targetedly the liquid medicine of drug component and boiler soft water with before power steam mixes by nozzle, the liquid that makes its ejection is vaporific, in order to can be evenly distributed with in steam medium; In addition, for guaranteeing liquid medicine, boiler soft water and power steam, can mix fully, be provided with the duct type blender after nozzle.
4, be provided with cooler at steam through before the nozzle that contains medicine, its objective is in order to make steam become unsaturated steam, making increases containing liquid moisture content in steam, in order to mix fully with the boiler soft water that contains medicine.
5, the steam after the cleaning steam turbine enters in recover and is recycled after the condenser condensation, reaches the abundant recovery of resource.
6, liquid medicine and soft water first by screen pack, are filtered the impurity contained in liquid medicine and soft water before entering nozzle, avoid plug nozzle.
7, the outlet at bottom at dosing tank is provided with showering guilding valve, so that convenient while having foreign material to enter, it is emptied and is processed.
8, the port of export of described thermoelectricity water storage device is provided with check (non-return) valve, showering guilding valve and Pressure gauge, and check (non-return) valve has guaranteed that liquid medicine is unlikely to enter in the thermoelectricity water storage device; The purpose of showering guilding valve is to can be used as a pressure relief opening winter when excretion liquid medicine; If manometric purpose is in order conveniently to check the pressure of boiler soft water.
9, septation pump of the present invention has two parallel connections, has guaranteed continuous operation, and is provided with check (non-return) valve at its outlet place of gathering, and has guaranteed that boiler soft water can not enter in dosing tank; Import and export at two membrane pumps all is provided with stop valve in addition, has facilitated its inspection and maintenance.
10, also be provided with Pressure gauge and flowmeter at the barrier film delivery side of pump, the convenient pressure of membrane pump and the size of medication amount adjusted in time, reach the purpose that rinses out salt crust fouling composition.
The accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention.
In figure: 1 dosing tank, 2-1 the first membrane pump, 2-2 the second membrane pump, 3-1 the first stop valve, 3-2 the second stop valve, 4-1 the first Pressure gauge, 4-2 the second Pressure gauge, 5-1 the first check (non-return) valve, 5-2 the second check (non-return) valve, 6-flowmeter, 7-1 the first showering guilding valve, 7-2 the second showering guilding valve, 8 thermoelectricity water storage devices, 9 steam engines, 10 coolers, 11 screen packs, 12 nozzles, 13 duct type blenders, 14 servo valves, 15 steam turbines, 16 condensers, 17 recovers.
The specific embodiment
Embodiment mono-:
A kind of method of Low-temperature cleaning turbine blade comprises the following steps:
(1) salt crust of getting on condenser tubulation outer wall is analyzed, and after the composition according to salt crust, the hydrochloric acid mass concentration that salt crust is cleaned in preparation is 3%;
(2) hydrochloric acid in (1) is put into to dosing tank, through the membrane pump pressurization, make its pressure 5.0MPa, then the soft water produced with the thermoelectricity water storage device mixes; Be provided with the Pressure gauge of adjusting its pressure and the flowmeter of controlling the liquid medicine flow after described membrane pump; Be provided with the showering guilding valve for pressure release after described thermoelectricity water storage device;
(3) mixed liquor in (2) is passed into to nozzle and form vaporific drop;
(4) steam that steam engine produces is cooled to 220 ℃ through cooler, then the nozzle of flowing through, and makes vaporific drop and its preliminary mixing in (3);
(5) fully mix and be sprayed onto on turbine blade and cleaned salt crust by servo valve in blender through (4) preliminary liquid mixed;
(6) through clean steam later enter condenser cooling after recycling.
Embodiment bis-:
A kind of method of Low-temperature cleaning turbine blade comprises the following steps:
(1) salt crust of getting on condenser tubulation outer wall is analyzed, and after the composition according to salt crust, the hydrochloric acid mass concentration that salt crust is cleaned in preparation is 5%;
(2) liquid medicine in (1) is put into to dosing tank, through the membrane pump pressurization, make its pressure 10MPa, then the soft water produced with the thermoelectricity water storage device mixes; Be provided with the Pressure gauge of adjusting its pressure and the flowmeter of controlling the liquid medicine flow after described membrane pump; Be provided with the showering guilding valve for pressure release after described thermoelectricity water storage device;
(3) mixed liquor in (2) is passed into to nozzle and form vaporific drop;
(4) steam that steam engine produces is cooled to 250 ℃ through cooler, then the nozzle of flowing through, and makes vaporific drop and its preliminary mixing in (3);
(5) fully mix and be sprayed onto on turbine blade and cleaned salt crust by servo valve in blender through (4) preliminary liquid mixed;
(6) through clean steam later enter condenser cooling after recycling.
Embodiment tri-:
As shown in Figure 1, the device of Low-temperature cleaning turbine blade, comprise steam engine 9 and the condenser 16 that is connected to steam turbine 15 steam drains, described steam engine 9 is communicated with nozzle 12 by cooler 10, the arrival end of nozzle 12 respectively with thermoelectricity water storage device 8 for boiler soft water is provided, for being connected being contained in the membrane pump port of export that the dirty liquid medicine of desalting of dosing tank 1 pressurizes.
Further, the port of export of dosing tank 1 is provided with the first membrane pump 2-1 and the second membrane pump 2-2 of two parallel connections, and the import and export of the first membrane pump 2-1 and the second membrane pump 2-2 respectively is provided with first a stop valve 3-1; The port of export of dosing tank 1 also is provided with the first showering guilding valve 7-1; Be provided with the first Pressure gauge 4-1, the first check (non-return) valve 5-1 and flowmeter 6 in the middle of the remittance port of export of the first membrane pump 2-1 and the second membrane pump 2-2 and the arrival end of nozzle 12; Be provided with the second check (non-return) valve 5-2, the second showering guilding valve 7-2 and the second Pressure gauge 4-2 in the middle of the arrival end of the port of export of thermoelectricity water storage device 8 and nozzle 12.
The soft water of thermoelectricity water storage device 8 with after liquid medicine in dosing tank 1 mixes successively by after entering the cooling steam produced with steam engine 9 in nozzle 12 after the second stop valve 3-2, screen pack 11 and being mixed, be connected and cleaned salt crust with the arrival end of steam turbine 15 by duct type blender 13, servo valve 14 again, steam afterwards enters in recover 17 after by condenser 16 condensations and is re-used.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. the method for a Low-temperature cleaning turbine blade is characterized in that: comprise the following steps:
(1) salt crust of getting on condenser tubulation outer wall is analyzed, and according to preparation after the composition of salt crust, cleans salt crust liquid medicine;
(2) liquid medicine in (1) is put into to dosing tank, through the membrane pump pressurization, make its pressure be not less than 5.0MPa, then the soft water produced with the thermoelectricity water storage device mixes;
(3) mixed liquor in (2) is passed into to nozzle and form vaporific drop;
(4) steam that steam engine produces is cooled to 220 ℃-250 ℃ through cooler, then the nozzle of flowing through, and makes vaporific drop and its preliminary mixing in (3);
(5) fully mix and be sprayed onto on turbine blade and cleaned salt crust by servo valve in blender through (4) preliminary liquid mixed;
(6) through clean steam later enter condenser cooling after recycling.
2. method according to claim 1 is characterized in that: in described step (1), liquid medicine is the hydrochloric acid that mass concentration is 3-5%.
3. method according to claim 1, is characterized in that: be provided with the Pressure gauge of adjusting its pressure and the flowmeter of controlling the liquid medicine flow after described step (2) septation pump; Be provided with the showering guilding valve for pressure release after described thermoelectricity water storage device.
4. a device of realizing the method for the described Low-temperature cleaning turbine blade of the claims 1-3 any one, comprise steam engine and the condenser that is connected to the turbine discharge mouth, it is characterized in that: described steam engine is communicated with nozzle by cooler, the arrival end of described nozzle is respectively with thermoelectricity water storage device for boiler soft water is provided, be connected for the port of export of the dosing tank that holds the dirty liquid medicine that desalts, and the port of export of described dosing tank is connected with nozzle by membrane pump; The port of export of described nozzle is connected with the arrival end of steam turbine by blender.
5. the device of Low-temperature cleaning turbine blade according to claim 4, it is characterized in that: described membrane pump is two outlets that are connected in parallel on dosing tank, and the import and export of described two membrane pumps is equipped with the first stop valve.
6. the device of Low-temperature cleaning turbine blade according to claim 4, it is characterized in that: the port of export of described dosing tank is provided with the first showering guilding valve.
7. the device of Low-temperature cleaning turbine blade according to claim 4, is characterized in that: be provided with the first Pressure gauge, the first check (non-return) valve and flowmeter in the middle of the port of export of described membrane pump and the arrival end of nozzle.
8. the device of Low-temperature cleaning turbine blade according to claim 4, is characterized in that: be provided with the second check (non-return) valve, the second showering guilding valve and the second Pressure gauge in the middle of the port of export of described thermoelectricity water storage device and the arrival end of nozzle.
9. the device of Low-temperature cleaning turbine blade according to claim 4 is characterized in that: the soft water of described thermoelectricity water storage device with by entering nozzle after the second stop valve, screen pack, with the steam that steam engine produces, mixed successively after liquid medicine in dosing tank mixes.
10. the device of Low-temperature cleaning turbine blade according to claim 4, it is characterized in that: described blender is the duct type blender, in the middle of itself and steam turbine, is provided with servo valve; Described condenser is connected with recover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310394191.XA CN103480599B (en) | 2013-09-03 | 2013-09-03 | A kind of method of Low-temperature cleaning turbine blade and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310394191.XA CN103480599B (en) | 2013-09-03 | 2013-09-03 | A kind of method of Low-temperature cleaning turbine blade and device thereof |
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| CN103480599A true CN103480599A (en) | 2014-01-01 |
| CN103480599B CN103480599B (en) | 2015-10-28 |
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| CN201310394191.XA Expired - Fee Related CN103480599B (en) | 2013-09-03 | 2013-09-03 | A kind of method of Low-temperature cleaning turbine blade and device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819173A (en) * | 2015-05-11 | 2015-08-05 | 中国海洋石油总公司 | Rotor disc-dynamic cleaning tool and method for centrifugal natural gas compressor |
| CN105134301A (en) * | 2015-10-08 | 2015-12-09 | 新兴铸管股份有限公司 | Turbomachine additionally provided with rotor and stator blade washing equipment by stewing |
| CN105545380A (en) * | 2016-01-23 | 2016-05-04 | 安徽商贸职业技术学院 | Turbine blade scaling cleaning device and cleaning method thereof |
| CN110243197A (en) * | 2019-05-23 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of the medicament adding apparatus and adding method thereof of direct air cooled condenser operation corrosion control |
| CN113600533A (en) * | 2021-07-12 | 2021-11-05 | 中国电子科技集团公司第十四研究所 | Method for cleaning workpiece in binary mixed mode |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819173A (en) * | 2015-05-11 | 2015-08-05 | 中国海洋石油总公司 | Rotor disc-dynamic cleaning tool and method for centrifugal natural gas compressor |
| CN105134301A (en) * | 2015-10-08 | 2015-12-09 | 新兴铸管股份有限公司 | Turbomachine additionally provided with rotor and stator blade washing equipment by stewing |
| CN105134301B (en) * | 2015-10-08 | 2017-08-25 | 新兴铸管股份有限公司 | A kind of turbine for installing boiling rotor and stator blade cleaning device additional |
| CN105545380A (en) * | 2016-01-23 | 2016-05-04 | 安徽商贸职业技术学院 | Turbine blade scaling cleaning device and cleaning method thereof |
| CN110243197A (en) * | 2019-05-23 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of the medicament adding apparatus and adding method thereof of direct air cooled condenser operation corrosion control |
| CN113600533A (en) * | 2021-07-12 | 2021-11-05 | 中国电子科技集团公司第十四研究所 | Method for cleaning workpiece in binary mixed mode |
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Effective date of registration: 20210408 Address after: 234000 No. 157, Xichang Road, Suzhou, Anhui Patentee after: WANBEI COAL-ELECTRICITY GROUP Co.,Ltd. Address before: 232038 Anhui Province, Huainan city tianjia'an District Quanshan Patentee before: ANHUI HUAIHUA Co.,Ltd. |
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Granted publication date: 20151028 Termination date: 20210903 |