CN202900808U - Heating and humidifying device used for power plant vacuum pump air ejector - Google Patents
Heating and humidifying device used for power plant vacuum pump air ejector Download PDFInfo
- Publication number
- CN202900808U CN202900808U CN 201220621436 CN201220621436U CN202900808U CN 202900808 U CN202900808 U CN 202900808U CN 201220621436 CN201220621436 CN 201220621436 CN 201220621436 U CN201220621436 U CN 201220621436U CN 202900808 U CN202900808 U CN 202900808U
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- vacuum pump
- steam
- heating
- power plant
- ejector
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Abstract
The utility model discloses a heating and humidifying device used for a power plant vacuum pump air ejector. The heating and humidifying device used for the power plant vacuum pump air ejector comprises a water ring type vacuum pump and a front ejector. A front ejector air inlet valve is arranged on a pipeline of the front ejector, and a heating and humidifying device is arranged on a pipeline between the front ejector air inlet valve and the front ejector. The heating and humidifying device used for the power plant vacuum pump air ejector is simple in structure. Due to the fact that the heating and humidifying device is arranged on the rear end of the front ejector air inlet valve, the heating and humidifying device can prevent a nozzle from freezing. Due to the fact that more heat can be delivered as a longer heating section, suction efficiency of the ejector is effectively improved. And after right amount of saturated steam is added, suction efficiency of the ejector can be better improved through using the steam, practicality is good, the front ejector can run efficiently under different environment temperature, and stability is improved.
Description
Technical field
The utility model belongs to vacuum pump pumped vacuum systems field, power station, is specifically related to a kind of warming and wetting apparatus for power plant's vacuum pump vacuum pump.
Background technique
Power station vacuum pump suction vapour condenser is set up vacuum steam turbine acting back pressure is provided, and the more abundant efficient of back pressure lower (vacuum is higher) steam turbine acting is just higher, and the height of condenser of power plant vacuum directly affects the generating efficiency of power plant; The power station vaccum-pumping equipment of prior art generally is comprised of water ring type machinery vacuum pump and preposition sparger two-part, sparger is as the fore pumping device of Nash hytor, its effect is the operating mode application area that enlarges Nash hytor, improve the limit suction capactity of vacuum pump complexes, play simultaneously the internal operation operating mode of improving vacuum pump, eliminate the effect of impeller cavitation and absorb vibration and noise, its performance is subjected to the impact of ambient temperature and medium quality larger, the design conditions of vacuum pump cooling water are at 15 ℃, China's most areas Various Seasonal temperature variation can cause that the vacuum pump cooling water changes between 5 ℃ to 30 ℃, when ambient temperature off-design operating mode is larger, water ring type machinery vacuum pump vacuum capability can descend, the empty device of preposition sparger can not be stable be operated in design conditions, the reduction of exerting oneself can appear, the situations such as vacuum fluctuation.The preposition sparger electro-thermal deicing of vacuum pump device can only the heated injectors body portion, can only prevent that spout from freezing to avoid because of the freeze reduction of the ejector efficiency that the variation that causes the spout physical dimension causes of spout, and practicability is undesirable.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, the warming and wetting apparatus that is used for power plant's vacuum pump vacuum pump that preposition sparger can both efficiently move under the varying environment temperature.
The technological scheme that realizes the utility model purpose is: a kind of warming and wetting apparatus for power plant's vacuum pump vacuum pump, comprise water ring type machinery vacuum pump and preposition sparger, pipeline at described preposition sparger is provided with preposition sparger suction valve, and the pipeline between described preposition sparger suction valve and preposition sparger is provided with warming and wetting apparatus.
Described warming and wetting apparatus comprises be used to the connecting tube that connects preposition sparger pipeline, be arranged on the connecting tube outside and and connecting tube between be provided with the stainless steel outer tube of sealed steam heat exchanger, steam-heating pipe and waste pipe with described sealed steam heat exchanger internal communication, the steam humidification pipe that communicates with described connecting tube inside, described steam-heating pipe is provided with the steam heating valve, described steam humidification pipe is provided with steam humidification valve, described steam-heating pipe and described steam humidification pipe are arranged on the outlet side, and described waste pipe is arranged on inlet end.
Be provided with the insulation coating in the outside of described stainless steel outer tube.
The thermometer of temperature in the outlet side of described connecting tube also is provided with for detection of connecting tube.
The length of described connecting tube is 3.2m, and the diameter of described connecting tube is 108mm, and the length of described stainless steel outer tube is 2m, and the diameter of described stainless steel outer tube is 209mm.
The utlity model has positive effect: of the present utility model simple in structure, be provided with warming and wetting apparatus in the rear end of preposition sparger suction valve, it can prevent that not only spout from freezing, and can transmit more heats because bringing-up section is long, effectively improve the pumping efficiency of sparger, and after adding an amount of saturated vapour, utilize steam can better improve the pumping efficiency of sparger, practicability is good, preposition sparger can both efficiently be moved under the varying environment temperature, and improved stability.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model according to specific embodiment also by reference to the accompanying drawings, wherein:
Fig. 1 is package assembly schematic representation of the present utility model;
Fig. 2 is the structural representation of warming and wetting apparatus of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 and Fig. 2 have shown a kind of embodiment of the present utility model, and wherein Fig. 1 is package assembly schematic representation of the present utility model; Fig. 2 is the structural representation of warming and wetting apparatus of the present utility model.
See Fig. 1 and Fig. 2, a kind of warming and wetting apparatus for power plant's vacuum pump vacuum pump, comprise water ring type machinery vacuum pump 1 and preposition sparger 2, pipeline at described preposition sparger 2 is provided with preposition sparger suction valve 3, and the pipeline between described preposition sparger suction valve 3 and preposition sparger 2 is provided with warming and wetting apparatus 4.See among Fig. 1 that water ring type machinery vacuum pump 1 comprises vacuum pump 11, cooler 12 and steam-water separator 13 and some air valves, an end of preposition sparger suction valve is connected with steam-water separator inside.
Described warming and wetting apparatus 4 comprises be used to the connecting tube 41 that connects preposition sparger pipeline, be arranged on connecting tube 41 outsides and and connecting tube 41 between be provided with the stainless steel outer tube 43 of sealed steam heat exchanger 42, steam-heating pipe 44 and waste pipe 45 with described sealed steam heat exchanger 42 internal communication, the steam humidification pipe 46 that communicates with described connecting tube 41 inside, described steam-heating pipe 44 is provided with steam heating valve 47, described steam humidification pipe 46 is provided with steam humidification valve 48, described steam-heating pipe 44 and described steam humidification pipe 46 are arranged on the outlet side, and described waste pipe 45 is arranged on inlet end.Its sealed steam heat exchanger also can adopt other structures such as coil pipe type etc., and the steam source of warming and humidifying is 150-300 ℃ in the present embodiment.
Be provided with insulation coating 49 in the outside of described stainless steel outer tube 43.Present embodiment is no more than 50 ℃ in insulation coating outer surface temperature, and is safe to use.
The thermometer 410 of temperature in the outlet side of described connecting tube 41 also is provided with for detection of connecting tube.
The length of described connecting tube 41 is 3.2m, and the diameter of described connecting tube 41 is 108mm, and the length of described stainless steel outer tube 43 is 2m, and the diameter of described stainless steel outer tube 43 is 209mm.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (5)
1. warming and wetting apparatus that is used for power plant's vacuum pump vacuum pump, comprise water ring type machinery vacuum pump and preposition sparger, pipeline at described preposition sparger is provided with preposition sparger suction valve, it is characterized in that: the pipeline between described preposition sparger suction valve and preposition sparger is provided with warming and wetting apparatus.
2. the warming and wetting apparatus for power plant's vacuum pump vacuum pump according to claim 1, it is characterized in that: described warming and wetting apparatus comprises be used to the connecting tube that connects preposition sparger pipeline, be arranged on the connecting tube outside and and connecting tube between be provided with the stainless steel outer tube of sealed steam heat exchanger, steam-heating pipe and waste pipe with described sealed steam heat exchanger internal communication, the steam humidification pipe that communicates with described connecting tube inside, described steam-heating pipe is provided with the steam heating valve, described steam humidification pipe is provided with steam humidification valve, described steam-heating pipe and described steam humidification pipe are arranged on the outlet side, and described waste pipe is arranged on inlet end.
3. the warming and wetting apparatus for power plant's vacuum pump vacuum pump according to claim 2 is characterized in that: be provided with the insulation coating in the outside of described stainless steel outer tube.
4. the warming and wetting apparatus for power plant's vacuum pump vacuum pump according to claim 3 is characterized in that: the thermometer of temperature in the outlet side of described connecting tube also is provided with for detection of connecting tube.
5. according to claim 2,3 or 4 described warming and wetting apparatus for power plant's vacuum pump vacuum pump, it is characterized in that: the length of described connecting tube is 3.2m, the diameter of described connecting tube is 108mm, and the length of described stainless steel outer tube is 2m, and the diameter of described stainless steel outer tube is 209mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621436 CN202900808U (en) | 2012-11-22 | 2012-11-22 | Heating and humidifying device used for power plant vacuum pump air ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621436 CN202900808U (en) | 2012-11-22 | 2012-11-22 | Heating and humidifying device used for power plant vacuum pump air ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900808U true CN202900808U (en) | 2013-04-24 |
Family
ID=48121484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220621436 Expired - Fee Related CN202900808U (en) | 2012-11-22 | 2012-11-22 | Heating and humidifying device used for power plant vacuum pump air ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900808U (en) |
-
2012
- 2012-11-22 CN CN 201220621436 patent/CN202900808U/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: 20130424 Termination date: 20141122 |
|
| EXPY | Termination of patent right or utility model |