CN201795693U - Condenser vacuum enhancing system - Google Patents
Condenser vacuum enhancing system Download PDFInfo
- Publication number
- CN201795693U CN201795693U CN2010202811605U CN201020281160U CN201795693U CN 201795693 U CN201795693 U CN 201795693U CN 2010202811605 U CN2010202811605 U CN 2010202811605U CN 201020281160 U CN201020281160 U CN 201020281160U CN 201795693 U CN201795693 U CN 201795693U
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- condenser
- vacuum
- vavuum pump
- chilled water
- air
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Abstract
The utility model relates to auxiliary generating equipment, and particularly discloses a condenser vacuum enhancing system. The condenser vacuum enhancing system comprises an air-extracting incoming pipe of a vacuum pump and an air-extracting outgoing pipe which is communicated with the air-extracting incoming pipe. The condenser vacuum enhancing system is characterized in that the air-extracting coming-in pipe is internally provided with a freeze water spraying device, which is provided with a freeze water incoming pipeline and a condensation water recovery pipeline. By adopting the condenser vacuum enhancing system, the output of a vacuum pump is improved, the service life of the vacuum pump is prolonged, further, the vacuum of the condenser unit is improved, and the benefits of generator sets of turbines are improved.
Description
(1) technical field
The utility model relates to a kind of generating auxiliary equipment, and particularly a kind of condenser vacuum improves system.
(2) background technology
At present, in the internal vapor turbine generator group in the ubiquity vavuum pump exhaust tube air-steam mixture vapor partial pressure higher, the vavuum pump aspiration does not reach the vavuum pump designing requirement, directly influences condenser vacuum and causes vavuum pump cavitation erosion to a certain extent, shortens vavuum pump service life.In Intellectual Property Right Bureau of the RPC's patent retrieval, retrieve relevant patent, utility model patent: 200820019352 " control system for reducing temperature and saving energy of operating water of vacuum pump ", utility model patent: 200620052506 " a kind of cooling devices of water circulation type vavuum pump ", utility model patent: 99258152 " a kind of condenser exhaust plumbing installations ", all be simple from an aspect or general studying, energy-saving effect is not ideal enough.
(3) summary of the invention
The utility model provides a kind of condenser vacuum that improves unit condenser vacuum, raising steam turbine power generation unit benefit to improve system in order to remedy the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of condenser vacuum improves system, the exhaust that comprises vavuum pump comes pipeline and the exhaust that is communicated with it removes pipeline, it is characterized in that: described exhaust comes on the pipeline to be communicated with the chilled water spray equipment is installed, and is communicated with on the chilled water spray equipment to be provided with chilled water and to come waterpipe and condensate return pipe road.
The utility model is higher at steam composition in the ubiquitous vavuum pump exhaust tube air-steam mixture in the present steam turbine power generation unit; influence the present situation in condenser vacuum and vavuum pump service life; in chilled water spray and vavuum pump exhaust tube; reduce steam composition in the vavuum pump exhaust tube effectively, significantly improve and protect condenser vacuum and prolong vavuum pump service life to a certain extent.
More excellent scheme of the present utility model is:
Described chilled water comes to be loaded with in the waterpipe chilled water of temperature below 15 ℃.
The against vacuum pump, when work water temperature during greater than design temperature, exerting oneself of vavuum pump can decline to a great extent; On the contrary, when work water temperature during less than design temperature, exerting oneself of vavuum pump can be risen significantly.Operating water of vacuum pump design temperature value is generally 20 ℃, when the work water temperature surpasses 30 ℃, and 5 ℃ of every risings, the pressure of suction chamber just improves 1.96kPa, and this influence to condenser vacuum is quite big.This be because, when the working water temperature rise after to a certain degree, the part working water can be vaporized, volume expands suddenly, occupies vavuum pump suction volume, causes suction capactity to descend.The factor of working water temperature rise in the vavuum pump pump housing, the frictional heat, main is by due to the take out water recovery heat of mixing in the body except between vacuum pumping pump impeller and working water.Chilled water below 15 ℃ is directly sprayed in vavuum pump exhaust pipeline, a large amount of water vapours can condense in exhaust tube in the exhaust pipeline, the water vapour amount that enters in the vavuum pump pump housing reduces, thereby the steam condensation heat reduces in the vavuum pump pump housing, and the temperature rise of working water is just controlled.
Vavuum pump has 2/3 to be steam from the air-steam mixture that condenser is extracted out, and the 1/3rd, air, the low chilled water of spray temperature can make steam condense in a large number in vavuum pump is found time tracheae.The minimizing of quantity of steam can improve the amount of air in the vavuum pump suction condenser, simultaneously because the proportion of steam is far longer than air, the flow resistance major part of mist is brought by steam in the pipeline, the minimizing of quantity of steam also can corresponding minimizing flow resistance, and its tolerance of finding time improved more remarkable when the aspiration of vavuum pump was improved.
The utility model feeds the mode of the chilled water of temperature below 15 ℃ with spray in the vavuum pump exhaust pipeline, reduce air-steam mixture volume flow in steam composition in the vavuum pump exhaust tube, the tracheae that reduces to find time, reduce vavuum pump cavitation erosion amount, exert oneself and prolong vavuum pump service life thereby improve vavuum pump, further improved the benefit of unit condenser vacuum and steam turbine power generation unit.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1 exhaust is managed, and 2 chilled water spray equipments, 3 exhausts remove pipe, 4 condensate return pipe roads, and 5 chilled waters come waterpipe.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprise the exhaust of vavuum pump manage 1 and the exhaust that is communicated with it go to manage 3, described exhaust is managed to be communicated with on 1 chilled water spray equipment 2 is installed, and is communicated with on the chilled water spray equipment 2 to be provided with chilled water and to come waterpipe 5 and condensate return pipe road 4; Described chilled water comes to be loaded with in the waterpipe 5 chilled water of temperature below 15 ℃.
According to the operating water of vacuum pump water temperature variation of before Power Plant being carried out the influence experiment of condenser vacuum is learnt, for the 600MW unit, when native system normally moves with behind temperature chilled water below 15 ℃ spray and the vavuum pump exhaust pipeline, condenser vacuum can reduce by 0.3～0.5KPa, generatine set heat efficiency can improve 0.3～0.5%, the rated load coal consumption can reduce by 1.0～1.5g/KWh, coal consumption can reduce by 1.2～1.7g/KWh during 80% load, calculate according to unit annual electricity generating capacity 5000000000 degree, year can be saved coal consumption:
During 80% load: 1.45 * 5000000000 * 0.75 ÷ 1000000=5436t.
Claims (2)
1. a condenser vacuum improves system, the exhaust that comprises vavuum pump is managed (1) and the exhaust that is communicated with it removes pipe (3), it is characterized in that: described exhaust is managed and (1) last connection chilled water spray equipment (2) is installed, and the last connection of chilled water spray equipment (2) is provided with chilled water and comes waterpipe (5) and condensate return pipe road (4).
2. condenser vacuum according to claim 1 improves system, and it is characterized in that: described chilled water comes to be loaded with in the waterpipe (5) chilled water of temperature below 15 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202811605U CN201795693U (en) | 2010-08-04 | 2010-08-04 | Condenser vacuum enhancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202811605U CN201795693U (en) | 2010-08-04 | 2010-08-04 | Condenser vacuum enhancing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201795693U true CN201795693U (en) | 2011-04-13 |
Family
ID=43850599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202811605U Expired - Fee Related CN201795693U (en) | 2010-08-04 | 2010-08-04 | Condenser vacuum enhancing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201795693U (en) |
-
2010
- 2010-08-04 CN CN2010202811605U patent/CN201795693U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20160804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |