CN104196769A - Environment-friendly multi-channel water jet air ejector - Google Patents
Environment-friendly multi-channel water jet air ejector Download PDFInfo
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- CN104196769A CN104196769A CN201410407667.3A CN201410407667A CN104196769A CN 104196769 A CN104196769 A CN 104196769A CN 201410407667 A CN201410407667 A CN 201410407667A CN 104196769 A CN104196769 A CN 104196769A
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Abstract
The invention discloses an environment-friendly multi-channel water jet air ejector which comprises two work sprayers. The two work sprayers are arranged at one end of the inside of a work room, the tail portions of the two work sprayers are aligned to working medium inlets connected with the work room, water media enter the work sprayers from the working medium inlets, the other end of the inside of the work room is connected with one end of each of two throat tubes, nozzles of the two work sprayers are aligned to inlets of the two throat tubes respectively, the nozzles of the work sprayers spray the media into the throat tubes, the outer surface of the work room is connected with an air inlet, gas enters the work room from the air inlet, the opening of the air inlet is provided with a one-way valve to guarantee that the gas enters the work room from the air inlet in one direction, the throat tubes are arranged in an anti-noise cover, the other end of each throat tube is connected with a throat tube air outlet room, and the surface of each throat tube air outlet room is provided with a leaving-velocity air exhaust port. The environment-friendly multi-channel water jet air ejector has the advantages of being low in consumption, efficient and low in noise.
Description
Technical field
The invention belongs to power generating equipment technical field, relate to a kind of environment protection type multi-path water jet air extractor.
Background technique
Novel high-efficiency environment friendly type multi-path water jet air extractor is Steam Turbine in Fire Power Plant group suction gas condensating device vacuum and other a kind of equipment that need to vacuumize.The vaccum-pumping equipment of gas condensating device mainly contains vacuum pump, air ejector, and air ejector has jetting to emanate two kinds, and water jet air ejector is because its system is simple at present, and reliable operation is widely used on domestic big-and-middle-sized unit.
In unit starting process, when ignition of the boiler steam turbine admission warming-up, to there is more steam to enter vapour condenser, if do not set up certain vacuum in vapour condenser, carbonated drink enters vapour condenser will make gas condensating device form malleation, damage equipment, gas condensating device is set up the vacuum essential condition of steam turbine red switch especially.Gas condensating device and some low-voltage equipments (as condensate pump, drainage pump and part low-pressure heater etc.) are in the time of normal operation, inner in vacuum state, due to pipeline and housing imprecision, air will be fade-in, thereby destroys condenser vacuum, jeopardizes the safety and economic operation of steam turbine.Meanwhile, the partial pressure of air in gas condensating device increases, and causes the dissolved oxygen amount of water of condensation to increase, thereby the corrosion of aggravation to heat power equipment and pipeline, the existence of air also increases the heat transfer resistance in vapour condenser, affects cooling to turbine discharge of recirculated cooling water, increases plant consumption.Therefore in the time that vapour condenser moves, must constantly extract air wherein out.
The effect of pumped vacuum systems is: 1 sets up condenser vacuum at the unit starting initial stage; 2 at the normal maintenance condenser vacuum in service of unit, guarantees the safety and economic operation of unit.The vaccum-pumping equipment of vapour condenser mainly contains air ejector and vacuum pump.Water jet air ejector vacuum system, because system is simple, so reliable operation is widely used on domestic large and medium-sized unit.
In modern power station, what be most widely used is jet-type air ejector, and jet-type air ejector can be divided into steam injecting type air ejector and water-jet type air extractor according to working medium difference.The principle of these two kinds of air ejectors is basic identical, and difference is working medium difference just.The working medium of stream-jet ejector is steam, and the working medium of water jet air ejector is press water.Small capacity unit adopts steam injecting type more.For the large capacity unit of high parameter, owing to all adopting sliding parameter Starting mode, before unit starting, can not there be enough vapour sources to supply with steam injecting type air ejector, in addition need to adopt the steam that is throttled to 1.2-1.6MPa pressure by high pressure live steam for stream-jet ejector, obviously extremely uneconomical, and penetrate vapour cooler for recovery working medium also will arrange, this makes thermodynamic system also very complicated.And existing water jet air ejector energy consumption is high, and the spreadable life is short, operation noise is large.
Summary of the invention
The object of the present invention is to provide a kind of environment protection type multi-path water jet air extractor, solved existing water jet air ejector energy consumption high, the spreadable life is short, the large problem of operation noise.
The technological scheme that invention adopts is to comprise two work shower nozzles, two work shower nozzles are arranged on inner one end, working room, the afterbody of two work shower nozzles is just to connecting the working medium import of working room, aqueous medium enters work shower nozzle in working medium import, the inner the other end in working room connects one end of two trunnions, the just entrance to two trunnions of nozzle difference of two work shower nozzles, the nozzle of work shower nozzle sprays into medium in trunnion, working room's outer surface connects suction port, gas enters inside, working room from suction port, the oral area of suction port is provided with one-way valve, ensure that gas unidirectional enters inside, working room from suction port, trunnion is placed in noise control cover, the trunnion the other end connects trunnion discharge chamber, trunnion discharge chamber surface is provided with leaving velocity bleeding point.
Further, described noise control cover is outer is noise elimination orifice plate, and mesosphere is that alumina silicate sound absorption is cotton, and internal layer is waterproof glass cloth, waterproof glass cloth prevents that internal water from soaking noise control cover, and noise elimination orifice plate and alumina silicate sound absorption cotton structure can abate the noise well and can reach heat insulation effect.
The invention has the beneficial effects as follows low-consumption high-efficiency, and noise is little.
Brief description of the drawings
Fig. 1 is environment protection type multi-path water jet air extractor structural representation of the present invention;
Fig. 2 is the partial schematic diagram of noise control cover of the present invention.
In figure, 1. work shower nozzle, 2. working room, 3. working medium import, 4. trunnion, 5. suction port, 6. one-way valve, 7. noise control cover, 8. trunnion discharge chamber, 9. leaving velocity bleeding point, 701. noise elimination orifice plates, 702. alumina silicate sound absorptions are cotton, 703. waterproof glass cloth.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, the present invention includes two work shower nozzles 1, two work shower nozzles 1 are arranged on inner one end, working room 2, the afterbody of two work shower nozzles 1 is just to connecting the working medium import 3 of working room 2, aqueous medium enters work shower nozzle 1 in working medium import 3, the inner the other end in working room 2 connects one end of two trunnions 4, the just entrance to two trunnions 4 of nozzle difference of two work shower nozzles 1, the nozzle of work shower nozzle 1 sprays into medium in trunnion 4, working room's 2 outer surfaces connect suction port 5, gas enters 2 inside, working room from suction port 5, the oral area of suction port 5 is provided with one-way valve 6, ensure that gas unidirectional enters 2 inside, working room from suction port 5, trunnion 4 is placed in noise control cover 7, trunnion 4 the other ends connect trunnion discharge chamber 8, trunnion discharge chamber 8 surfaces are provided with leaving velocity bleeding point 9.
Water-jet pump connects working medium import 3, and the press water being come by water-jet pump is transformed into kinetic energy by work shower nozzle 1 by pressure energy, sprays height of formation vacuum in working room 2 with certain speed from work shower nozzle 1.Gas condensating device taps into gas port 5, and the gas vapour mixture in vapour condenser is inhaled in working room 2 and working medium mixes, and enters together static press device kinetic energy is transformed into pressure energy, after trunnion 4 diffusions, in a little higher than atmospheric situation, discharges with current.
Automatic one-way valve 6 (pressure difference by one-way valve 6 front and back is closed) is housed in the interface suction port 5 being communicated with vapour condenser in working room 2, its objective is in the time that water-jet pump breaks down, prevent that water and air from blowing back into vapour condenser.The simultaneously noise when preventing carbonated drink diffusion, we trunnion 4 additional one deck noise control cover 7, can effectively eliminate like this noise after steam-water mixing.Working room 2 adopts up-to-date fluid passage, makes impact force minimum after steam-water mixing, wraps up in and inhales maximum gas with minimum amount.Make energy consumption reach minimum.
Be illustrated in figure 2 the A place partial enlarged drawing of noise control cover 7.Noise control cover 7 of the present invention, outer is noise elimination orifice plate 701, mesosphere is alumina silicate sound absorption cotton 702, internal layer is waterproof glass cloth 703, waterproof glass cloth 703 prevents that internal water from soaking noise control cover 7, and noise elimination orifice plate 701 and alumina silicate cotton 702 structures that absorb sound can abate the noise well and can reach heat insulation effect.Noise control cover 7 is to take a kind of up-to-date silencer, its advantage in order to prevent from making a noise after mixing wastewater with air: can effectively eliminate the noise after mixing wastewater with air, can reach again effect of heat insulation simultaneously;
Advantage of the present invention is: the water in working room, with the minimum water yield, is wrapped up in and inhaled maximum gas, reaches the condition of low-consumption high-efficiency.There are not the wearing and tearing of sound body, long service life.Requirement to water quality is lower.Can effectively abate the noise, new type nozzle interior angle adopts particular design, has atomizing effect good, wraps up in energy-absorbing power strong, can reach the water yield few, wraps up in the advantage that air absorbing body is many.New type nozzle inside center is apart from more accurate, and precision, smoothness are higher, and water is evenly sprayed, and do not have the wearing and tearing of sound body.New type nozzle adopts high-quality stainless steel, and corrosion resistance is stronger, and to water quality, coolant-temperature gage is less demanding.Novel noise control cover is inner adopts new and effective sound absorption cotton, can effectively eliminate the noise after steam-water mixing.
The above is only to preferred embodiments of the present invention, not the present invention is done to any pro forma restriction, any simple modification that every foundation technical spirit of the present invention is done above mode of execution, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (2)
1. an environment protection type multi-path water jet air extractor, it is characterized in that: comprise two work shower nozzles (1), two work shower nozzles (1) are arranged on inner one end, working room (2), the afterbody of two work shower nozzles (1) is just to connecting the working medium import (3) of working room (2), aqueous medium enters work shower nozzle (1) in working medium import (3), the inner the other end in working room (2) connects one end of two trunnions (4), the just entrance to two trunnions (4) of nozzle difference of two work shower nozzles (1), the nozzle of work shower nozzle (1) sprays into medium in trunnion (4), working room (2) outer surface connects suction port (5), gas enters inside, working room (2) from suction port (5), the oral area of suction port (5) is provided with one-way valve (6), ensure that gas unidirectional enters inside, working room (2) from suction port (5), trunnion (4) is placed in noise control cover (7), trunnion (4) the other end connects trunnion discharge chamber (8), trunnion discharge chamber (8) surface is provided with leaving velocity bleeding point (9).
2. according to a kind of environment protection type multi-path water jet air extractor described in claim 1, it is characterized in that: described noise control cover (7) is outer is noise elimination orifice plate (701), mesosphere is alumina silicate sound absorption cotton (702), internal layer is waterproof glass cloth (703), waterproof glass cloth (703) prevents that internal water from soaking noise control cover (7), and noise elimination orifice plate (701) and cotton (702) structure of alumina silicate sound absorption can abate the noise well and can reach heat insulation effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410407667.3A CN104196769B (en) | 2014-08-18 | 2014-08-18 | A kind of environment-friendly type multi-path water jet air extractor |
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| CN201410407667.3A CN104196769B (en) | 2014-08-18 | 2014-08-18 | A kind of environment-friendly type multi-path water jet air extractor |
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| CN104196769A true CN104196769A (en) | 2014-12-10 |
| CN104196769B CN104196769B (en) | 2017-11-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747507A (en) * | 2015-01-12 | 2015-07-01 | 启东市海信机械有限公司 | Water jetting air pumping device |
| CN106400571A (en) * | 2016-11-24 | 2017-02-15 | 怀宁县天元纸业有限公司 | Vacuum control unit of vacuum roller of paper machine and paper machine |
| CN107606966A (en) * | 2017-11-23 | 2018-01-19 | 长兴华阁耐物流装备有限公司 | A kind of condenser is classified vaccum-pumping equipment |
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| CN2034988U (en) * | 1988-02-13 | 1989-03-29 | 田鹤年 | High-efficiency and low-consumption multi-channel water-gas jet pump unit |
| CN1308992A (en) * | 2000-12-29 | 2001-08-22 | 魏仕英 | Water jet blower with multiple diffuser ducts |
| CN2660193Y (en) * | 2003-12-05 | 2004-12-01 | 滕坚毅 | Local fan silencer |
| US20090311111A1 (en) * | 2008-06-16 | 2009-12-17 | Denso Corporation | Ejector |
| CN201779079U (en) * | 2010-08-10 | 2011-03-30 | 何乃昌 | Water-injecting air extractor |
| DE102011114799A1 (en) * | 2011-10-01 | 2013-04-04 | Daimler Ag | Gas jet pump for use in fuel cell system of passenger car for feeding secondary gas stream, has nozzle comprising nozzle cap between outlet and inlet regions, where nozzle cap surrounds primary gas stream in inlet region |
| CN204061355U (en) * | 2014-08-18 | 2014-12-31 | 连云港久盛电力辅机有限公司 | A kind of environment protection type multi-path water jet air extractor |
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2014
- 2014-08-18 CN CN201410407667.3A patent/CN104196769B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2034988U (en) * | 1988-02-13 | 1989-03-29 | 田鹤年 | High-efficiency and low-consumption multi-channel water-gas jet pump unit |
| CN1308992A (en) * | 2000-12-29 | 2001-08-22 | 魏仕英 | Water jet blower with multiple diffuser ducts |
| CN2660193Y (en) * | 2003-12-05 | 2004-12-01 | 滕坚毅 | Local fan silencer |
| US20090311111A1 (en) * | 2008-06-16 | 2009-12-17 | Denso Corporation | Ejector |
| CN201779079U (en) * | 2010-08-10 | 2011-03-30 | 何乃昌 | Water-injecting air extractor |
| DE102011114799A1 (en) * | 2011-10-01 | 2013-04-04 | Daimler Ag | Gas jet pump for use in fuel cell system of passenger car for feeding secondary gas stream, has nozzle comprising nozzle cap between outlet and inlet regions, where nozzle cap surrounds primary gas stream in inlet region |
| CN204061355U (en) * | 2014-08-18 | 2014-12-31 | 连云港久盛电力辅机有限公司 | A kind of environment protection type multi-path water jet air extractor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747507A (en) * | 2015-01-12 | 2015-07-01 | 启东市海信机械有限公司 | Water jetting air pumping device |
| CN104747507B (en) * | 2015-01-12 | 2017-02-22 | 启东市海信机械有限公司 | Water jetting air pumping device |
| CN106400571A (en) * | 2016-11-24 | 2017-02-15 | 怀宁县天元纸业有限公司 | Vacuum control unit of vacuum roller of paper machine and paper machine |
| CN107606966A (en) * | 2017-11-23 | 2018-01-19 | 长兴华阁耐物流装备有限公司 | A kind of condenser is classified vaccum-pumping equipment |
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| Publication number | Publication date |
|---|---|
| CN104196769B (en) | 2017-11-07 |
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