CN103321973A - Condenser steam jet vacuum system - Google Patents
Condenser steam jet vacuum system Download PDFInfo
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- CN103321973A CN103321973A CN2013102881023A CN201310288102A CN103321973A CN 103321973 A CN103321973 A CN 103321973A CN 2013102881023 A CN2013102881023 A CN 2013102881023A CN 201310288102 A CN201310288102 A CN 201310288102A CN 103321973 A CN103321973 A CN 103321973A
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- condenser
- steam
- steam jet
- vapour
- jet ejector
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Abstract
The invention discloses a condenser steam jet vacuum system which comprises a condenser pipeline connected with a condenser, a steam ejector set formed by at least a steam ejector I and a steam ejector II, and a condenser set formed by at least a condenser I and a condenser II. Power steam inlets of the steam ejector I and the steam ejector II are connected into power steam. Steam is used as media of the steam ejector I, and supersonic jet is produced through a power nozzle, so a head cavity is vaccumized to extract steam-gas mixtures in the condensers, the steam-gas mixtures exported from the condensers are mixed with the power steam and then are ejected into the condenser I through the steam ejector I to be processed in a condensed mode and finally are sucked in by the steam ejector II to be reprocessed. The condenser steam jet vacuum system is simple in structure and low in transformation cost, and can thoroughly solve the problem of unit efficiency reduction brought by vacuum pump cavitation.
Description
Technical field
The present invention relates to a kind of improvement to condenser vacuum system, be specifically related to a kind of vapour condenser steam jet vacuum system.
Background technique
In the thermal power plant, usually adopt water ring vaccum pump to extract incoagulable gas in the vapour condenser, to guarantee the degree of vacuum of vapour condenser.Concrete scheme is: referring to Fig. 1, condenser vacuum system of the prior art, comprise the vapour condenser pipeline 1 that joins with the vapour condenser (not shown), described vapour condenser pipeline 1 is connected to the entrance point place of water ring vaccum pump 2, water ring vaccum pump 2, steam-water separator 3 and working solution heat exchanger 4 pipelines join, and realize application of vacuum.
Its deficiency is: the working solution of water ring vaccum pump is water, and its design temperature generally is 15 ℃, and working solution is to cool off by recirculated cooling water.But the circulating cooling coolant-temperature gage is subjected to the impact in season, and in summer, vacuum pump working solution temperature will be far above design load.Can cause the working solution temperature constantly to raise because acting and water vapor discharge gasification latent heat, bring the vacuum pump cavitation erosion, exhaust capacity descends, and the condenser vacuum variation affects unit economy, also has influence on the safe operation of equipment.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, maintenance cost is low, can thoroughly solve because the unit efficiency that vacuum pump cavitation erosion brings reduces the vapour condenser steam jet vacuum system of problem.
A kind of vapour condenser steam jet vacuum system, comprise the vapour condenser pipeline that joins with vapour condenser, at least the steam jet ejector group that is consisted of by two steam jet ejector I, steam jet ejector II, and the condenser group that is consisted of by two condenser I, condenser II at least; Described steam jet ejector I, II comprises head chamber and the injection pipe that communicates, offer respectively power steam entry port and vapour condenser gas entry port on the described head chamber, described power steam entry port place is provided with injection pipe and is positioned at power jet on the same level line, described condenser I comprises the condenser body, offer the condensed fluid entrance on the described condenser body, relief opening, bleeding point and condensed water discharge outlet, offer suction port on the condenser body of described condenser II, atmosphere exhaust port and condensed water discharge outlet, the vapour condenser gas entry port of described steam jet ejector I connects the vapour condenser pipeline, injection pipe connects the bleeding point of condenser I, the relief opening of condenser I accesses the vapour condenser gas entry port of steam jet ejector II again, the injection pipe of steam jet ejector II connects the suction port of condenser II, described steam jet ejector I, the power steam entry port of steam jet ejector II accesses the steam of taking offence, the steam jet ejector I is take steam as medium, produce supersonic jet by power jet and in head chamber, cause vacuum, extract the vapour gas mixture in the vapour condenser, sprayed into the condenser I by the steam jet ejector I behind the vapour gas mixture that in vapour condenser, exports and the vapour mixture of taking offence and carry out being carried out reprocessing by the suction of steam jet ejector II after the condensation process.
As further improvement in the technical proposal:
Power steam after condenser is processed, the water vapor in the vapour condenser pumped gas are recovered to hot well after being condensed into water.
As further improvement in the technical proposal:
Steam jet ejector II outlet pressure is 101.5Kpa.
As further improvement in the technical proposal:
Described vapour condenser steam jet vacuum system adopts the DCS system control of access power plant central station of floating dock.
Beneficial effect of the present invention is embodied in:
1, service behaviour is high, fabricating cost, has effectively reduced energy loss, has improved stability, operation, control, use easy.
2, avoided under the summer condition, the vacuum pump vacuum system the cavitation erosion problem promoted working life of vacuum pump, reduce the maintenance management expense.Improve unit operation situation (reduce operational shock, noise, improve stabilization of equipment performance, Security etc.) and raised the efficiency the lifting Economy.
3, specifically in the technological transformation project process, transform relatively simply, do not need to destroy the Infrastructure of former vacuum pump system piping layout etc., well cascade.And can accomplish to keep the independence of original system, and can fine switching drop into, realize the high-effect low consumption operation of air-extractor.
4, after the transformation, dropping into and cutting off only needs valve switch to realize.The DCS(distributed control systems of power plant's central station of floating dock can be controlled or access to control system on the spot) system's realization unified management.Maintenance reduces, and safeguards simply, transforms part without motion or rotatable parts, can not increase mechanical wear or other mechanical problems.And vacuum pump cavitation erosion etc. only need General Maintenance after being resolved.
5, this steam jet vacuum system does not have rotatable parts, the generation of machinery-free wear problem.Eliminate destabilizing factor, thereby guaranteed the long-term stability operation of system.
Description of drawings
Fig. 1 is the structural representation of condenser vacuum system in the prior art.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the structural representation of steam jet ejector.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.Should be understood that following examples are only for explanation the present invention but not for limiting the scope of the invention.
Referring to Fig. 2, a kind of vapour condenser steam jet vacuum system provided by the invention comprises the vapour condenser pipeline 1 that joins with the vapour condenser (not shown);
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective,
Make condenser vacuum maintain all the time high level, the technological scheme that the present invention takes is: as shown in Figure 2, described vapour condenser steam jet vacuum system also comprises at least by two steam jet ejector I 5a, the steam jet ejector group that steam jet ejector II 5b consists of, and at least by two condenser I 6a, the condenser group that condenser II 6b consists of, referring to Fig. 3, described steam jet ejector I 5a, II 5b comprises head chamber 7 and the injection pipe 8 that communicates, offer respectively power steam entry port 9 and vapour condenser gas entry port 10 on the described head chamber 7, described power steam entry port 9 places are provided with injection pipe 8 and are positioned at power jet 11 on the same level line, described condenser I 6a comprises condenser body 12, offer condensed fluid entrance 13 on the described condenser body 12, relief opening 14, bleeding point 15 and condensed water discharge outlet 16, offer suction port 17 on the condenser body 12 of described condenser II 6b, atmosphere exhaust port 18 and condensed water discharge outlet 16, the vapour condenser gas entry port 10 of described steam jet ejector I 5a connects vapour condenser pipeline 1, injection pipe 8 connects the bleeding point 15 of condenser I 6a, the relief opening 14 of condenser I 6a accesses the vapour condenser gas entry port 10 of steam jet ejector II 5b again, the injection pipe 8 of steam jet ejector II 5b connects the suction port 17 of condenser II 6b, described steam jet ejector I 5a, the power steam entry port 9 of steam jet ejector II 5b accesses the steam of taking offence, steam jet ejector I 5a is take steam as medium, produce supersonic jet by power jet 11 and in head chamber 7, cause vacuum, extract the vapour gas mixture in the vapour condenser, being sprayed into condenser I 6a by the steam jet ejector I behind the vapour gas mixture that exports in vapour condenser and the vapour mixture of taking offence carries out being sucked by steam jet ejector II 5b after the condensation process, enter second level injection-condensation process, condensation principle and process are the same, and condensed water wherein reclaims by condensed water discharge outlet 16 and enters power plant's hot well.
The present invention is in order further to improve its usability, and structure of the present invention can also on above-described technological scheme basis, adopt the following examples in the specific implementation:
The vapour gas mixture that described condenser II 6b discharges enters cold water separator behind tubular heat exchanger.
Steam jet ejector II 5b outlet pressure is 101.5Kpa, need not to adopt moving element and power consumption parts.
Control system of the present invention can adopt the DCS system control of access power plant central station of floating dock.
Claims (4)
1. vapour condenser steam jet vacuum system, comprise the vapour condenser pipeline that joins with vapour condenser, it is characterized in that: also comprise the steam jet ejector group that is consisted of by two steam jet ejector I, steam jet ejector II at least, and the condenser group that is consisted of by two condenser I, condenser II at least; Described steam jet ejector I, II comprises head chamber and the injection pipe that communicates, offer respectively power steam entry port and vapour condenser gas entry port on the described head chamber, described power steam entry port place is provided with injection pipe and is positioned at power jet on the same level line, described condenser I comprises the condenser body, offer the condensed fluid entrance on the described condenser body, relief opening, bleeding point and condensed water discharge outlet, offer suction port on the condenser body of described condenser II, atmosphere exhaust port and condensed water discharge outlet, the vapour condenser gas entry port of described steam jet ejector I connects the vapour condenser pipeline, injection pipe connects the bleeding point of condenser I, the relief opening of condenser I accesses the vapour condenser gas entry port of steam jet ejector II again, the injection pipe of steam jet ejector II connects the suction port of condenser II, described steam jet ejector I, the power steam entry port of steam jet ejector II accesses the steam of taking offence, the steam jet ejector I is take steam as medium, produce supersonic jet by power jet and in head chamber, cause vacuum, extract the vapour gas mixture in the vapour condenser, sprayed into the condenser I by the steam jet ejector I behind the vapour gas mixture that in vapour condenser, exports and the vapour mixture of taking offence and carry out being carried out reprocessing by the suction of steam jet ejector II after the condensation process.
2. vapour condenser steam jet vacuum system according to claim 1 is characterized in that: the power steam after condenser is processed, the water vapor in the vapour condenser pumped gas are recovered to hot well after being condensed into water.
3. vapour condenser steam jet vacuum system according to claim 1, it is characterized in that: steam jet ejector II outlet pressure is 101.5Kpa.
4. according to claim 1,2 or 3 described vapour condenser steam jet vacuum systems, it is characterized in that: described vapour condenser steam jet vacuum system adopts the DCS system control of access power plant central station of floating dock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102881023A CN103321973A (en) | 2013-07-10 | 2013-07-10 | Condenser steam jet vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102881023A CN103321973A (en) | 2013-07-10 | 2013-07-10 | Condenser steam jet vacuum system |
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| Publication Number | Publication Date |
|---|---|
| CN103321973A true CN103321973A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102881023A Pending CN103321973A (en) | 2013-07-10 | 2013-07-10 | Condenser steam jet vacuum system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917780A (en) * | 2017-03-16 | 2017-07-04 | 林文华 | Multistage steam injecting type pumped vacuum systems and its adjusting method |
| CN107200490A (en) * | 2017-07-20 | 2017-09-26 | 宋晓丽 | Gypsum slurries pumped vacuum systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808195A (en) * | 1954-03-29 | 1957-10-01 | Schutte & Koerting Co | Steam jet vacuum pump system |
| CN87200048U (en) * | 1987-01-01 | 1988-03-16 | 西北轻工业学院 | Steam-jet vacuum pump without condenser |
| JP2001317498A (en) * | 2000-05-08 | 2001-11-16 | Samson Co Ltd | Vapor ejector provided with drain discharge means |
| CN201198849Y (en) * | 2008-05-27 | 2009-02-25 | 杭州华达喷射真空设备有限公司 | Energy-saving type water vapor injection vacuum pumping system |
| CN202188773U (en) * | 2011-08-03 | 2012-04-11 | 湖北同方高科泵业有限公司 | Complete device for vacuuming of million-kilowatt level thermal power and nuclear power condenser |
-
2013
- 2013-07-10 CN CN2013102881023A patent/CN103321973A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808195A (en) * | 1954-03-29 | 1957-10-01 | Schutte & Koerting Co | Steam jet vacuum pump system |
| CN87200048U (en) * | 1987-01-01 | 1988-03-16 | 西北轻工业学院 | Steam-jet vacuum pump without condenser |
| JP2001317498A (en) * | 2000-05-08 | 2001-11-16 | Samson Co Ltd | Vapor ejector provided with drain discharge means |
| CN201198849Y (en) * | 2008-05-27 | 2009-02-25 | 杭州华达喷射真空设备有限公司 | Energy-saving type water vapor injection vacuum pumping system |
| CN202188773U (en) * | 2011-08-03 | 2012-04-11 | 湖北同方高科泵业有限公司 | Complete device for vacuuming of million-kilowatt level thermal power and nuclear power condenser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917780A (en) * | 2017-03-16 | 2017-07-04 | 林文华 | Multistage steam injecting type pumped vacuum systems and its adjusting method |
| CN106917780B (en) * | 2017-03-16 | 2018-01-16 | 晟源高科(北京)科技有限公司 | Multistage steam injecting type pumped vacuum systems and its adjusting method |
| CN107200490A (en) * | 2017-07-20 | 2017-09-26 | 宋晓丽 | Gypsum slurries pumped vacuum systems |
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Application publication date: 20130925 |