CN202165327U - Novel cavitation-free water-ring vacuum pump - Google Patents
Novel cavitation-free water-ring vacuum pump Download PDFInfo
- Publication number
- CN202165327U CN202165327U CN2011202603039U CN201120260303U CN202165327U CN 202165327 U CN202165327 U CN 202165327U CN 2011202603039 U CN2011202603039 U CN 2011202603039U CN 201120260303 U CN201120260303 U CN 201120260303U CN 202165327 U CN202165327 U CN 202165327U
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- pump
- jet
- cavitation
- vacuum pump
- water
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- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model relates to the technical field of pumps, in particular to a novel cavitation-free water-ring vacuum pump. The novel cavitation-free water-ring vacuum pump is characterized in that a water ring pump exhaust port, an atmosphere jet pump, a connector, a motor, a water ring pump air inlet, a water-ring vacuum pump, a shaft , a grounding pumping system and a jet exhaust port are comprised; in the novel cavitation-free water-ring vacuum pump, the atmosphere jet pump is arranged at the front end of the water ring pump air inlet and comprises an air inlet pipe, a jet nozzle, the grounding pumping system, an atmosphere jet pump body, a diffuser and the jet exhaust port; and the jet exhaust port is connected with the water ring pump air inlet. The utility model has the benefit of having a cavitation-free function, has the characteristics of high-temperature resistance and high-pressure resistance, resistance to corrosion, long service life and the like, is labor-saving to operate, and is flexible and reliable.
Description
[technical field]
The utility model relates to the pump technical field, especially a kind of novel no cavitation Nash hytor.
[background technique]
Water ring vaccum pump operation under high vacuum condition for a long time; Particularly the summer condition is more abominable, and the vacuum pump rotor blade material reaches capacity in anti-cavitation, and is under some influence its working life; In the time of within operating in scope of design; Vacuum pump can normally move, like related causes, such as: the long-term oepration at full load of unit; Summer, cooling water temperature was higher or the too small vacuum pump heat exchanger cooling effect that causes of cooling water flow is poor, and vacuum pump then can move under high vacuum, be equivalent near or be in to suppress under the death situation attitude and move; Because intrinsic physical phenomenon, under the certain condition of water temperature, vacuum is high more; Water temperature is high more; Water in the pump is near boiling and can produce a large amount of bubbles, and the generation of bubble and rupture process can cause cavitation to damage the dynamic balancing of impeller to impeller; Cause the judder of the pump housing; Shatter the accessory (feedback means of combined pressure and vacuum gauge, pressure switch, inlet pneumatic door etc.) of vacuum pump, and can send very large cavitation noise, these situations have had a strong impact on the safe operation of vacuum pump group and the safe operation of Turbo-generator Set.
[summary of the invention]
In order to solve above-mentioned deficiency; If solve the cavitation problem of vacuum pump; It is bigger to reduce the water temperature cost, reduces degree of vacuum and just lets the back pressure of condenser rising more impossible like this, and this has a strong impact on water ring pump the on-load ability vacuum pump unit of unit; Desirable way is the generation that under the constant situation of former water temperature, system vacuum, can solve cavitation; At present best selection is installed the atmosphere sparger additional to vacuum pump with exactlying, and the performance of drawing gas of whole vacuum pump group can be better, so the vacuum of vapour condenser level or higher at present still; But the vacuum pump body internal vacuum only in 12Kpa (this moment, system vacuum was within the 3-8Kpa scope), can effectively be avoided the generation of cavitation like this.Through investigation, install the atmosphere sparger additional and effectively avoided the influence of cavitation vacuum pump rotor, prolonged the working life of vacuum pump.
A kind of novel no cavitation Nash hytor technological scheme is; It is characterized in that; Comprise: water ring pump relief opening 1, atmospheric jet pump 2, connector 3, motor 4, water ring pump suction port 5, Nash hytor 6, axle 7, ground connection are taken out system 33, jet exhaust mouth 36; Said a kind of novel no cavitation Nash hytor; Be provided with atmospheric jet pump 2 at water ring pump suction port 5 front ends, atmospheric jet pump 2 is taken out system 33, atmosphere valve body 34, Diffuser 35, jet exhaust mouth 36 by suction tude 31, nozzle 32, ground connection and is formed, and its jet exhaust mouth 36 links to each other with water ring pump suction port 5.
Said a kind of novel no cavitation Nash hytor starts water ring vaccum pump earlier, makes between nozzle suction port and the relief opening and forms pressure difference; Atmosphere can get in the pump from nozzle, when pressure difference be atmospheric pressure 1/2 the time, air dielectric obtains quickening through the nozzle contraction section; Can reach the velocity of sound during to throat, vacuum pump can further accelerate to the velocity of sound to extending section, and the directive diffuser forms high-speed jet; And it is low to cause the interior pressure ratio of induction chamber to be taken out container inner pressure, so in the pumped gas suction chamber, owing to mix in two strands of air-flow induction chambers; The loss that momentum transfer produces slows down gradually airflow rate, then drops to below the velocity of sound when getting into diffuser throat, further reduces through the diffuser extending section; Pressure constantly raises, and reaches the exhaust pressure of atmospheric jet pump at last, i.e. the pressure of inspiration(Pi) of water ring pump; Then water ring pump sucks gas again outside the excavationg pump, promptly accomplishes air-breathing, exhaust process.
The utility model beneficial effect: 1, have no cavitation function; 2, has high temperature resistant, high pressure, characteristics such as anticorrosive, life-span is long, rapid operation, flexibility and reliability.
[description of drawings]
Fig. 1 is a kind of novel no cavitation Nash hytor overall schematic;
Fig. 2 is the atmospheric jet pump schematic representation;
Fig. 3 is the atmospheric jet pump structural representation of the utility model, and appointment Fig. 3 is a Figure of abstract.
Wherein: water ring pump relief opening 1, atmospheric jet pump 2, connector 3, motor 4, water ring pump suction port 5, Nash hytor 6, axle 7, suction tude 31, nozzle 32, ground connection are taken out system 33, atmosphere valve body 34, Diffuser 35, jet exhaust mouth 36.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:
With reference to Fig. 1; Said a kind of novel no cavitation Nash hytor; Be provided with atmospheric jet pump 2 at water ring pump suction port 5 front ends; Atmospheric jet pump 2 is taken out system 33, atmosphere valve body 34, Diffuser 35, jet exhaust mouth 36 by suction tude 31, nozzle 32, ground connection and is formed, and its jet exhaust mouth 36 links to each other with water ring pump suction port 5.
Said a kind of novel no cavitation Nash hytor starts water ring vaccum pump earlier, makes between nozzle suction port and the relief opening and forms pressure difference; Atmosphere can get in the pump from nozzle, when pressure difference be atmospheric pressure 1/2 the time, air dielectric obtains quickening through the nozzle contraction section; Can reach the velocity of sound during to throat, vacuum pump can further accelerate to the velocity of sound to extending section, and the directive diffuser forms high-speed jet; And it is low to cause the interior pressure ratio of induction chamber to be taken out container inner pressure, so in the pumped gas suction chamber, owing to mix in two strands of air-flow induction chambers; The loss that momentum transfer produces slows down gradually airflow rate, then drops to below the velocity of sound when getting into diffuser throat, further reduces through the diffuser extending section; Pressure constantly raises, and reaches the exhaust pressure of atmospheric jet pump at last, i.e. the pressure of inspiration(Pi) of water ring pump; Then water ring pump sucks gas again outside the excavationg pump, promptly accomplishes air-breathing, exhaust process.
Claims (1)
1. novel no cavitation Nash hytor; It is characterized in that; Comprise: water ring pump relief opening, atmospheric jet pump, connector, motor, water ring pump suction port, Nash hytor, axle, ground connection are taken out system, jet exhaust mouth; Said a kind of novel no cavitation Nash hytor; Be provided with atmospheric jet pump at water ring pump suction port front end, atmospheric jet pump is taken out system, atmosphere valve body, Diffuser, jet exhaust mouth by suction tude, nozzle, ground connection and is formed, and its jet exhaust mouth links to each other with the water ring pump suction port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202603039U CN202165327U (en) | 2011-07-22 | 2011-07-22 | Novel cavitation-free water-ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202603039U CN202165327U (en) | 2011-07-22 | 2011-07-22 | Novel cavitation-free water-ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165327U true CN202165327U (en) | 2012-03-14 |
Family
ID=45801155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202603039U Expired - Fee Related CN202165327U (en) | 2011-07-22 | 2011-07-22 | Novel cavitation-free water-ring vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165327U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929988A (en) * | 2015-05-29 | 2015-09-23 | 上海东方泵业(集团)有限公司 | Cavitation eliminating method and device |
| CN111139521A (en) * | 2019-12-16 | 2020-05-12 | 西安奕斯伟硅片技术有限公司 | Air injection device, liquid ring vacuum pump and crystal pulling furnace |
-
2011
- 2011-07-22 CN CN2011202603039U patent/CN202165327U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929988A (en) * | 2015-05-29 | 2015-09-23 | 上海东方泵业(集团)有限公司 | Cavitation eliminating method and device |
| CN104929988B (en) * | 2015-05-29 | 2018-04-13 | 上海东方泵业(集团)有限公司 | A kind of method and apparatus for eliminating cavitation |
| CN111139521A (en) * | 2019-12-16 | 2020-05-12 | 西安奕斯伟硅片技术有限公司 | Air injection device, liquid ring vacuum pump and crystal pulling furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20120722 |