CN202902933U - Steam-sealed heat exchanger for preventing air from entering - Google Patents
Steam-sealed heat exchanger for preventing air from entering Download PDFInfo
- Publication number
- CN202902933U CN202902933U CN 201220585746 CN201220585746U CN202902933U CN 202902933 U CN202902933 U CN 202902933U CN 201220585746 CN201220585746 CN 201220585746 CN 201220585746 U CN201220585746 U CN 201220585746U CN 202902933 U CN202902933 U CN 202902933U
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- Prior art keywords
- heat exchanger
- steam
- cavity
- pipe
- shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a steam-sealed heat exchanger for preventing air from entering. The heat exchanger comprises a shell, wherein a cavity is formed in the shell, and a heat exchange pipe is arranged in the cavity; a steam inlet pipe and a condensed water drainage pipe which are communicated with the cavity are arranged on the shell; one end of the heat exchange pipe is connected with a deoxygenated water inlet pipe, and the other end of the heat exchange pipe is connected with a deoxygenated water drainage pipe; and an exhaust pipe communicated with the cavity is arranged on the shell. The heat exchanger is characterized in that a control valve is arranged on the exhaust pipe. Under the normal condition, the control valve is closed, and a water seal is forcibly established, so that working vacuum required by the steam-sealed heat exchanger is ensured; during startup, the control valve is opened, and residual steam and uncondensed air in the cavity are discharged, so that the working condition required by the steam-sealed heat exchanger in various states is ensured; and the steam-sealed heat exchanger is easy and convenient to adjust, has a good emptying effect, and can ensure smooth operation of a steam turbine and a condenser.
Description
Technical field
The utility model relates to a kind of packing heat exchanger, and particularly a kind of steam extraction and condensing formula steam turbine generator packing heat exchanger belongs to the heat enginnering technical field.
Background technology
The packing heat exchanger of steam extraction and condensing formula steam turbine generator, utilize venturi principle to set up faint vacuum, the leakage steam pipe road that makes packing before and after the steam turbine is negative pressure slightly, with the leakage vapour with turbine shaft seal and valve rod, constantly suck the packing heat exchanger by leaking the steam pipe road, in the packing heat exchanger, leak vapour and carry out heat exchange with the deaerated water that enters, leakage vapour is cooled and condenses into water, and deaerated water is heated simultaneously, and boiler of feeding re-used after temperature improved.Most of vapour that leaks is through packing heat exchanger heat exchanger tube outer wall the time, can discharge a large amount of heats and condense into water, condensate water flows automatically in the condenser of vacuum state by U-shaped single-stage water seal, for this reason, need to prevent that air from entering into condenser by water seal, and all the other leak vapour and continue in the packing heat exchanger and the deaerated water heat exchange, do not efflux, until all condense into water.Because the drain cooler of existing packing heat exchanger only has one-level, U-shaped water seal height is inadequate, when starting, air can enter by emptying (diffusing) pipe on the packing heat exchanger, thereby make the hydrophobic U-shaped water seal that links to each other with shaft sealing cooler can not play sealing function, cause condenser vacuum to worsen, affect the safe operation of Steam Turbine.
Summary of the invention
For preventing that air from can enter the packing heat exchanger through evacuated tube, and cause the condenser vacuum of postorder to worsen, affect the safe operation of Steam Turbine, the utility model provides a kind of packing heat exchanger that prevents that air from entering.
The utility model is finished by following technical proposal: a kind of packing heat exchanger that prevents that air from entering, comprise and establish cavity in it, establish the housing of heat-exchange tube in the cavity, housing is provided with the steam that is communicated with cavity and enters pipe, condensate water discharge, heat-exchange tube one end links to each other with the deaerated water water inlet pipe, the other end links to each other with the deaerated water drainpipe, and housing is provided with the blast pipe that is communicated with cavity, it is characterized in that this blast pipe is provided with control valve.
Described condensate water discharge links to each other with condenser by U-shaped water seal.
Described heat-exchange tube is screwed pipe.
Described deaerated water drainpipe links to each other with steam boiler, send boiler to use with the deaerated water after will heating.
The utlity model has following advantages and effect: adopt such scheme, can close this control valve easily under normal circumstances, and force to set up water-stop, guarantee the required working vacuum of packing heat exchanger; And when the starting up, open control valve, and with the residue vapor in the cavity, incoagulable Bas Discharged, guarantee packing heat exchanger required condition of work under various states, has operation adjustment simple, convenient, the emptying advantage such as effective, thus the even running of Steam Turbine and condenser guaranteed.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Such as Fig. 1, the utility model provides prevents the packing heat exchanger that air enters, comprise and establish cavity 1 in it, establish the housing 3 of heat-exchange tube 2 in the cavity 1, housing 3 is provided with the steam that is communicated with cavity 1 and enters pipe 9, condensate water discharge 4, and heat-exchange tube 2 one ends link to each other with deaerated water water inlet pipe 10, and the other end links to each other with deaerated water drainpipe 6, housing 3 is provided with the blast pipe 7 that is communicated with cavity 1, and blast pipe 7 is provided with control valve 8; Described condensate water discharge 4 links to each other with the condenser of postorder by U-shaped water seal 5; Described heat-exchange tube 2 is screwed pipe; Described deaerated water drainpipe 6 links to each other with steam boiler.
Claims (4)
1. packing heat exchanger that prevents that air from entering, comprise and establish cavity in it, establish the housing of heat-exchange tube in the cavity, housing is provided with the steam that is communicated with cavity and enters pipe, condensate water discharge, heat-exchange tube one end links to each other with the deaerated water water inlet pipe, the other end links to each other with the deaerated water drainpipe, and housing is provided with the blast pipe that is communicated with cavity, it is characterized in that this blast pipe is provided with control valve.
2. the packing heat exchanger that prevents that air from entering according to claim 1 is characterized in that described condensate water discharge links to each other with condenser by U-shaped water seal.
3. the packing heat exchanger that prevents that air from entering according to claim 1 is characterized in that described heat-exchange tube is screwed pipe.
4. the packing heat exchanger that prevents that air from entering according to claim 1 is characterized in that described deaerated water drainpipe links to each other with steam boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585746 CN202902933U (en) | 2012-11-08 | 2012-11-08 | Steam-sealed heat exchanger for preventing air from entering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585746 CN202902933U (en) | 2012-11-08 | 2012-11-08 | Steam-sealed heat exchanger for preventing air from entering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202902933U true CN202902933U (en) | 2013-04-24 |
Family
ID=48123593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220585746 Expired - Lifetime CN202902933U (en) | 2012-11-08 | 2012-11-08 | Steam-sealed heat exchanger for preventing air from entering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202902933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390580A (en) * | 2021-07-10 | 2021-09-14 | 湖南华菱湘钢节能发电有限公司 | Condenser vacuum on-line quick leak detection method |
-
2012
- 2012-11-08 CN CN 201220585746 patent/CN202902933U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390580A (en) * | 2021-07-10 | 2021-09-14 | 湖南华菱湘钢节能发电有限公司 | Condenser vacuum on-line quick leak detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUNNAN COAL INDUSTRY ENERGY CO., LTD. Free format text: FORMER OWNER: YUNNAN KUNSTEEL COKING CO., LTD. Effective date: 20131015 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 650302 KUNMING, YUNNAN PROVINCE TO: 650000 KUNMING, YUNNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131015 Address after: 650000 A46 room, 3 science and Technology Innovation Park, Kunming, Kunming, Yunnan Patentee after: YUNNAN COAL & ENERGY Co.,Ltd. Address before: 650302 Yunnan city of Kunming province Anning City Lang Chuang Kunming Ministry of science and technology innovation Patentee before: YUNNAN KUNGANG COAL COKING Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |