CN204511992U - Vacuum pump front-located mode diffusion cooling device - Google Patents
Vacuum pump front-located mode diffusion cooling device Download PDFInfo
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- CN204511992U CN204511992U CN201520107737.3U CN201520107737U CN204511992U CN 204511992 U CN204511992 U CN 204511992U CN 201520107737 U CN201520107737 U CN 201520107737U CN 204511992 U CN204511992 U CN 204511992U
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Abstract
The utility model provides a kind of vacuum pump front-located mode diffusion cooling device, a set of diffusion cooling device of bleeding is increased by adopting serial fashion on vacuum pump inlet pipe, the demineralized water moisturizing utilizing steam turbine normally to run, the saturation water that this demineralized water is corresponding relative to exhaust pressure has low temperature speciality, incondensable gas is aspirated by front-located mode jetting air ejector, make it as first order air ejector, reduce extraction temperature, reach the operating conditions improving vacuum pump, reduce the generation of cavitation, promote the object of vacuum pump suction capactity.And reach lower bleed ultimate pressure or larger rate of air sucked in required according to different engineering requirements, meet the needs of different industries vacuum equipment, improve Economy and the Security of manufacturing mechanism.
Description
Technical field
The utility model belongs to the field such as generating, the chemical industry energy, particularly a kind of vacuum pump front-located mode diffusion cooling device.
Background technique
Water ring type oil-sealed rotary pump is widely used in the fields such as generating, chemical industry, the energy, plays extremely important effect in industrial production and national life, is related to the All aspects of such as the height of manufacturing efficiency, equipment security of operation, operation maintenance cost.Prior art is that the impeller of solution water ring type oil-sealed rotary pump cavitates, vacuum pump efficiency decrease problem mainly takes following three kinds of modes:
1), vacuum pump inlet increases vacuum pump;
2) vacuum pump working seal liquid air-conditioner set forced refrigeration is increased;
3) vacuum pump cooling water temperature (or increasing cooler area) is reduced.
But above three kinds of modes exist respectively, and cooling water source is more difficultly implemented, cooling effect is limited; Invest huge and chiller plant takes up room more very difficult layout, power consumption is large and correctional effect is not remarkable; The shortcomings such as extra increase oil-sealed rotary pump power consumption is more.
As shown in Figure 1; adopt vacuum pump scheme; this technology be sacrifice water ring type oil-sealed rotary pump power consumption to improve the entrance swabbing pressure of vacuum pump to avoid the gasification of working water in water ring type oil-sealed rotary pump; protect mechanical vacuum pump impeller by the impeller cavitation erosion situation improving water ring type oil-sealed rotary pump, the pumping limit pressure of vacuum pump is not acted on substantially.Due to the direct withdrawing air of nozzle entrance, suction because of a large amount of additional air causes the power consumption of water ring type oil-sealed rotary pump to increase, vaccum pump motor electric current generally raises more than 20A, power additionally increases nearly 10kW/h, but the suction capactity of Nash hytor is not improved, only improves the functional reliability of Nash hytor.
Again as shown in Figures 2 and 3, Nash hytor inlet pipe installs additional chilled water spraying cooling, or auxiliary chilled water of forcing carrys out cooling water ring type oil-sealed rotary pump working solution simultaneously, the program effectively can reduce the working solution temperature of water ring type oil-sealed rotary pump, promote the suction capactity of water ring type oil-sealed rotary pump, reduce the steam loss entrained by incondensable gas, solve the problems such as vacuum pump cavitation erosion damage, penalty well.But because this plant investment is huge, and air-conditioning equipment takies very large space, and cooling water inflow is huge, refrigeration power consumption is high, so and be not suitable for all scenes.On water ring type machinery vacuum pump inlet pipeline, adopt chilled water to spray in the program and reduce incondensable gas water content, due to spraying into of chilled water, the rapid condensation of vacuum pump inlet pipeline partial water steam causes degree of vacuum to improve, such vacuum pump inlet place degree of vacuum improves more, namely vacuum pump inlet pressure is reduced, contrary with the original intention that raising vacuum pump inlet suction pressure improves vacuum pump working condition, so just partly reduce the working effect after vacuum pump working solution employing chilled water, and the water vapor saturation temperature reduction that partial vacuum is corresponding after raising, effect on moisture extraction also reduces.The maximum shortcoming of this device is that investment is huge, installing space needed for chiller plant is very large, and power consumption every platform unit reaches nearly 600kW/h, and the cooling water inflow of air-conditioner set is comparatively large simultaneously, not easily passs through technical innovation and solves, and unifiedly should to consider in the design phase.
Model utility content
An object of the present utility model solves at least the problems referred to above and/or defect, and provide the advantage will illustrated at least below.
The vacuum pump that the utility model provides preposition diffusion cooling device designs for the following defect existing for existing different technologies:
1) significantly, additionally increase oil-sealed rotary pump power consumption is not more for vacuum pump correctional effect;
2) adopting the investment of air-conditioner set pressure cooling system, huge and chiller plant takes up room, more very difficult layout, power consumption are large;
3) adopt low-temperature water source, increase that cooling water source in heat exchanger film-cooled heat scheme is more difficultly implemented, cooling effect is limited.
The technical solution of the utility model:
A kind of vacuum pump front-located mode diffusion cooling device, between admission line and vacuum pump inlet, arrange a water jetting spout injection device, described water jetting spout injection device is made up of Water jetting type air ejector, air extracting seal pipeline, diffuser and captation.Wherein have a cooling water passage, air-flow carries out hybrid cooling and diffusion through described cooling water passage and diffuser and cooling water.The principle of diffusion is a diffusion cooling device of having connected on the pipeline of the normal withdrawing air of vacuum pump, and it is diffusion why, is because the air-flow of vacuum pump inlet is accelerated, causes the air quantity at vacuum pump inlet place to increase, and excess pressure raises.That diffusion, cooling are carried out to the air of vacuum pump suction.When the cooling water of certain pressure is quickly through Water jetting type air ejector, pumping action will be played to the more substantial air in mixing chamber place.The air aspirated due to vacuum pump sprays accelerated before vacuum pump inlet through suction, and is reducing temperature, so play the effect of diffusion and cooling through Water jetting type air ejector inner passage and air ejector outlet section and cooling water mixed heat transfer.
Preferably, in described vacuum pump front-located mode diffusion cooling device, described water jetting spout injection device comprises:
The Working-fluid intaking be connected with coolant outlet;
The driven fluid entrance be communicated with described admission line;
For driving fluid being carried out the diffusion cooling unit of diffusion cooling;
And for collecting the header tank of described working fluid, it is arranged on described diffusion cooling unit outlet port.
Preferably, described vacuum pump front-located mode diffusion cooling device also comprises:
Air extracting seal pipeline, it is set on described diffusion cooling unit, and described air extracting seal pipeline is communicated with described admission line, and the position that described air extracting seal pipeline is connected with described header tank is also provided with a diffuser.
Preferably, in described vacuum pump front-located mode diffusion cooling device, described diffusion cooling unit is air ejector and rear portion diffusion pipeline.Water jetting type air ejector is middle is throat, and the diffuser pipe that throat two ends extend out gradually, so possess diffusion function.
Preferably, in described vacuum pump front-located mode diffusion cooling device,
Described diffusion cooling unit is atomizer nozzle;
Described driving fluid entrance is arranged on the below of the outlet of described atomizer nozzle;
Be arranged on described atomizer nozzle outlet port and mix the diffuser of diffusion for cooling water and driving fluid being carried out, the outlet port of described diffuser is connected to the entrance of described vacuum pump.
Preferably, in described vacuum pump front-located mode diffusion cooling device, also comprise the trap that catchments, it is arranged on the pipeline between described header tank and described vacuum pump inlet.
Preferably, in described vacuum pump front-located mode diffusion cooling device, described cooling water is cooled water of condensation or demineralized water.The water with certain pressure has certain momentum, is just to use the working medium in the normal runtime system of unit herein, and requires that temperature is lower.Intrasystem working medium, refers to and can form Inner eycle, and namely the intrasystem water yield can not have more along with the prolongation of working time, so will use normal moisturizing or through cooled water of condensation.
The utility model utilizes unit moisturizing (demineralized water)/condensate pump outlet water of condensation (through cooling) to be used as the one-level exhaust injection water source of Nash hytor entrance, the power water source of different pressures can be selected flexibly, according to the rate of water make-up demand of unit, the design parameter designing Water jetting type air ejector is selected in the aspects such as the practical problem that vacuum pump exists, the high pumping limit pressure of injection large discharge (air) or injection small flow (air) can be selected to reduce pumping limit pressure, the inlet pressure of vacuum pump is improved by the diffusion action of device, improve the operating conditions of vacuum pump, avoid cavitation erosion, by the diffuser sprayed into pressure is higher of low temperature demineralized water, the incondensable gas in venting gas appliance/vapour condenser and gas-vapor mix are cooled simultaneously, reduce the air temperature of vacuum pump suction, and then reduce the temperature of vacuum pump working solution, improve the suction performance of vacuum pump.Another advantage of this device takes full advantage of intrasystem cycle fluid, and make use of certain momentum that low temperature moisturizing possesses itself and carry out injection and bleed, additionally do not increase power consumption, make use of the low-temperature characteristics of low temperature moisturizing simultaneously, moisturizing (namely having carried out heat recovery) is heated while reduction extraction temperature, and the oxygen content (characteristic of deaeration in condenser) reduced in demineralized water moisturizing, improve the quality of moisturizing.In addition, this device can being selected, determining that full capacity or portion capacity are bled by Water jetting type air ejector to play the diffusion cooling effect to bleeding according to the plan boundary condition of engineering practice and Water jetting type air ejector.
The core component of Nash hytor preposition diffusion cooling device is the Water jetting type air ejector selected according to the actual specific aim of engineering, utilize have certain momentum the moisturizing of low temperature demineralized water or through the working medium of cooled water of condensation as air ejector, transported the inlet pressure increasing water ring type oil-sealed rotary pump by the incondensable gas that air ejector is a large amount of, utilize simultaneously low-temperature working water to the operating conditions reclaiming reducing the temperature and improving vacuum pump of incondensable gas bleed band steam; Utilize the hot air unit moisturizing of extracting out, by the oxygen in the jet atomization of Water jetting type air ejector and vacuum environment removing moisturizing, improve moisturizing quality.
The outlet of this device Water jetting type air ejector arranges header tank, and upper orifice is connected with vacuum pump inlet pipeline, and bottom establishes drain water piping to be connected with venting gas appliance hot well, realizes recycling of injection working medium.Nash hytor entrance Ling You mono-road pipeline is connected on Condenser Extraction mother pipe or the female pipe of air cooling system exhaust, the incondensable gas flow that can decide by Water jetting type air ejector according to factors such as the rate of water make-ups of actual environment temperature and unit, manages by adjustment Nash hytor and exhaust mother the allocation proportion that the regulating valve aperture be directly connected regulates incondensable gas.
The working medium of Water jetting type air ejector can have two kinds of selections, be respectively the condensate pump outlet water of condensation that the demineralized water moisturizing of pressure 0.45MPa, summer temp 20-25 DEG C and pressure are about 2.8MPa, due to the saturation water that condensing water temperature is under steam exhaust device or back pressure of condenser, so utilize water of condensation need enter the cooling of factory building swing-in water system as ejection medium.Because Nash hytor operating conditions worsens, suction capactity reduces, impeller cavitation erosion damages and mainly occurs in Summer High-Temperature Times, so the preposition diffusion cooling device of this Nash hytor mainly for be the improvement of Summer High-Temperature Times Nash hytor performance, and improve the Economy of steam turbine or other vacuum systems.The concrete specification of Water jetting type air ejector, size and nozzle water consumption customize according to actual needs.Exert oneself for power station 600MW unit in summer Nash hytor and adjust, vacuum pump aspiration is quoted by the maximum rate of air sucked in required 500kg/h of the limit, utilize the low temperature water of 25 DEG C as ejection medium, venting gas appliance back pressure 33kpa, corresponding saturation temperature is 71.14 DEG C, low temperature water is 10 DEG C to the amplitude of cooling of bleeding, initial estimate is by the injection water consumption (supposing that incondensable gas is all saturated steam, the gasification latent heat with a large amount of) of Water jetting type air ejector nozzle:
By the corresponding medium specific enthalpy that enthalpy-entropy diagram is looked into, saturated steam h vapour=2628.3kJ/kg under 33kpa, 25 DEG C of low temperature water h water 1=104.8kJ/kg, the water vapour that vacuum pump is extracted out condenses into water after diffusion cooling at 61.14 DEG C, then now h water 2=255.84kJ/kg, then:
Q vapour * h vapour+Q water * h water 1=(Q vapour+Q water) h water 2
Then Q water=(Q vapour * h vapour-Q vapour h water 2)/(h water 2-h water 1)=(1314150-127920)/151.04=7853.75kg
Namely when demineralized water temperature is 25 DEG C and the gas extracted out of vacuum pump when being all the water vapour carrying a large amount of gasification latent heat, per hourly need 7.85375t demineralized water, the minimum make-up water percentage of unit actual design calculates according to 1%, then the rate of water make-up of single unit is about 22t/h, demineralized water only do vacuum pump bleed cooling medium use then have larger affluence amount, and due to vacuum pump extract out gas in can not be all the water vapour carrying a large amount of gasification latent heat, so demineralized water is enough without interruption, can realize running without interruption.
Namely water vapour entrained by Nash hytor have a large amount of condensation vapor after Water jetting type air ejector diffusion, after cryogenic spray working medium (demineralized water) cooling, be substantially all condensed into water be sent to steam exhaust device hot well for unit and recycle simultaneously, significantly reduce the steam loss of vacuum pump, vacuum pump is because the water vapour of suction is by output of condensing in advance, and vacuum pump power consumption will reduce greatly.The nucleus equipment of device--Water jetting type air ejector suction chamber geometrical construction, aditus laryngis shape, larynx footpath nozzle area ratio, the long larynx of larynx chews footpath ratio, and the selection of flooding parameter etc. designs according to the actual demand of different engineering, customizes.
Compared with prior art, Nash hytor preposition diffusion cooling device have investment low (only increasing a set of Water jetting type air ejector and part pipeline), the steam of removing entrained by incondensable gas thoroughly, improve Nash hytor operating conditions Be very effective, while unit moisturizing, heated demineralized water moisturizing, reclaim reclaimed a large amount of low-temperature heat quantities while working medium and eliminate in moisturizing containing oxygen, improve the outstanding advantages such as moisturizing quality.Meanwhile, the power source pressure of Water jetting type air ejector is generally about 0.4MPa, matches with demineralized water supplementing water pressure, does not need additionally to increase booster pump, so can not increase power consumption.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model technological scheme of the prior art;
Fig. 2 is the structural representation of the utility model another technological scheme of the prior art;
Fig. 3 is the system architecture schematic diagram of the utility model another technological scheme of the prior art;
The structural representation of an embodiment of the vacuum pump front-located mode diffusion cooling device that Fig. 4 provides for the utility model;
The structural representation of another embodiment of the vacuum pump front-located mode diffusion cooling device that Fig. 5 provides for the utility model
The structural representation of another embodiment of the vacuum pump front-located mode diffusion cooling device that Fig. 6 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
The enforcement of the preposition diffusion cooling device of Nash hytor does not need the original system changing Nash hytor, only at a set of preposition diffusion cooling device of Nash hytor entrance serial connection, Water jetting type air ejector outlet working medium (demineralized water or water of condensation) is collected by header tank, recycle-water in header tank enters steam exhaust device hot well (or condenser hotwell) by air ejector outlet pressure and the effect of back pressure of condenser difference, does not need increasing apparatus can complete water body conveying.
Embodiment one:
A kind of vacuum pump front-located mode diffusion cooling device, as shown in Figure 4, between admission line 1 and vacuum pump inlet 2, arrange a water jetting spout injection device, have a cooling water passage in described water jetting spout injection device device, air-flow carries out mixing diffusion through described cooling water passage and cooling water.By ejection gas because of accelerated in device, thus in device 4 pressure comparatively pressure increase in pipeline 1, so produce diffusion, cooling action.
In described vacuum pump front-located mode diffusion cooling device, described water jetting spout injection device comprises:
The Working-fluid intaking be connected with coolant outlet 5;
The driving fluid entrance be communicated with described admission line 1;
For driving fluid being carried out the diffusion cooling unit 3 of diffusion;
And for collecting the header tank 4 of described working fluid, it is arranged on described diffusion cooling unit 3 outlet port.
In described vacuum pump front-located mode diffusion cooling device, described diffusion cooling unit 3 is air ejector.
In described vacuum pump front-located mode diffusion cooling device, described cooling water is condensed water or demineralized water.
Adopt there is certain momentum press water (in machine room unit moisturizing demineralized water or through the water of condensation of cooling or other through boosted power water source) as the power water source of Water jetting type air ejector, mixed with power water by the incondensable gas after the boosting of Water jetting type air ejector; The outlet of Water jetting type air ejector and Nash hytor (or with principle vacuum equipment) inlet in series; Water jetting type air ejector outlet working medium (power water) collect completed by header tank or same category of device, the working medium after collection Water jetting type air ejector outlet and steam exhaust device/vapour condenser differential pressure action under oneself flow into steam exhaust device/vapour condenser or deliver to other target devices or system by booster pump.Nash hytor inlet pipe adopts with the preposition diffusion cooling device of vacuum pump and connects or series parallel structure separately.
2), by the input of the preposition diffusion cooling device of vacuum pump to improve the inlet pressure of vacuum pump; Lower target device limit suction back pressure is obtained when vacuum pump inlet place pressure is identical.Because the diffusion action after the acceleration of Water jetting type air ejector and ejector, make pressure in pipeline 1 lower than the pressure in pipeline 2, now the valve of connecting pipeline 1 and pipeline 2 is in the closed position).
3), by the input of vacuum pump preposition diffusion cooling device to obtain lower extraction temperature or larger rate of air sucked in required (air be sucked is cooled, and the water vapour wherein carried is cooled, condensation, so vacuum pump aspiration is larger).
Embodiment two:
In view of the Water jetting type air ejector problem that the injection water yield that needs is larger when aspirating large quantity of air, and the actual demands of engineering that cannot all by air ejector be extracted comparatively large for limited, the required rate of air sucked in required of the power water source water yield, then as shown in Figure 5,
A kind of vacuum pump front-located mode diffusion cooling device, between admission line 1 and vacuum pump inlet 2, arrange a water jetting spout injection device, have a cooling water passage in described water jetting spout injection device device, air-flow carries out mixing diffusion through described cooling water passage and cooling water.
In described vacuum pump front-located mode diffusion cooling device, described water jetting spout injection device comprises:
The Working-fluid intaking be connected with coolant outlet 5;
The driving fluid entrance be communicated with described admission line 1;
For driving fluid being carried out the diffusion cooling unit 3 of diffusion;
And for collecting the header tank 4 of described working fluid, it is arranged on described diffusion cooling unit 3 outlet port.
In described vacuum pump front-located mode diffusion cooling device, described water jetting spout injection device also comprises:
Air extracting seal pipeline 6, it is set on described diffusion cooling unit 3, and described air extracting seal pipeline 6 is communicated with described admission line 1, and the position that described air extracting seal pipeline 6 is connected with described header tank 4 is also provided with a diffuser 8.
In described vacuum pump front-located mode diffusion cooling device, described diffusion cooling unit 3 is air ejector.
In the vacuum pump front-located mode diffusion cooling device stated, also comprise the trap 7 that catchments, it is arranged on the pipeline between described header tank 4 and described vacuum pump inlet 2.
In described vacuum pump front-located mode diffusion cooling device, described cooling water is condensed water or demineralized water.
Air ejector is arranged vertically on extract system inside, the pump-line namely after size amplification is inner.Water jetting type air ejector bleeding point is in pump-line and meets airflow direction or hoop circumference, the incondensable gas attracted from female pipe of bleeding is except part is except air ejector suction, the enclosed space that other incondensable gases are then formed through air extracting seal pipeline/device and Water jetting type air ejector is by (or air ejector and the air conduit without ejector are arranged in juxtaposition, be not set to integrated device).It is anterior that the outlet of Water jetting type air ejector is arranged in air extracting seal pipeline/device diffuser, the water that Water jetting type air ejector ejects and the gas that water is swept along then boost with the air without ejector at air extracting seal pipeline/device diffuser, lower the temperature, and fall into bottom header tank after steam condenses herein with water-spraying.Secondary (i.e. Nash hytor) air-extractor inlet pipe is provided with in air extracting seal pipeline/device diffuser bottom, after vertical rising, level is drawn and is connected to Nash hytor entrance, the trap that catchments is provided with in this pipeline bottom, trap is connected with Water jetting type air ejector bottom header tank by pipeline, and the water collected by header tank flows into steam exhaust device/condenser hotwell under differential pressure action.Device also can adopt horizontal arrangement according to site space condition, and Water jetting type air ejector horizontal arrangement is in air extracting seal pipeline, and the layout of the parts such as header tank adjusts accordingly.
Embodiment three:
As shown in Figure 6, a kind of vacuum pump front-located mode diffusion cooling device, between admission line 1 and vacuum pump inlet 2, arrange a water jetting spout injection device, have a cooling water passage in described water jetting spout injection device device, air-flow carries out mixing diffusion through described cooling water passage and cooling water.
In described vacuum pump front-located mode diffusion cooling device, described water jetting spout injection device comprises:
The Working-fluid intaking be connected with coolant outlet 5;
The driving fluid entrance be communicated with described admission line 1;
For driving fluid being carried out the diffusion cooling unit 3 of diffusion;
And for collecting the header tank 4 of described working fluid, it is arranged on described diffusion cooling unit 3 outlet port.Cooling water is accelerated in acceleration, atomizing nozzle or nozzle, and drive at outlet section and be sucked air acceleration, in diffuser 8, air velocity reduces, pressure increase.
In described vacuum pump front-located mode diffusion cooling device,
Described diffusion cooling unit 3 is atomizer nozzle;
Described driving fluid entrance is arranged on the below of the outlet of described atomizer nozzle;
Be arranged on described atomizer nozzle outlet port and mix the diffuser 8 of diffusion for cooling water and driving fluid being carried out, the outlet port of described diffuser 8 is connected to the entrance of described vacuum pump.
Only have when Water jetting type air ejector being replaced by cooling jet and just do not need ejector and diffuser pipe, this sampling device just only has cooling to be sucked the effect of air.
In described vacuum pump front-located mode diffusion cooling device, also comprise the trap 7 that catchments, it is arranged on the pipeline between described header tank 4 and described vacuum pump inlet 2.
In described vacuum pump front-located mode diffusion cooling device, described cooling water is condensed water or demineralized water.
Replace Water jetting type air ejector with acceleration, atomizing nozzle or nozzle, after the demineralized water with certain momentum is injected main pump-line diffuser by atomizer nozzle or jet pipe with bleed fully mix make it to lower the temperature, dewater after access Nash hytor entrance.The water of condensation reclaimed and the endless form of working water identical with replacement scheme one.Replace Water jetting type air ejector with acceleration, atomizing nozzle or nozzle, after the demineralized water with certain momentum is injected main pump-line diffuser by atomizer nozzle or jet pipe with bleed fully mix make it to lower the temperature, dewater after access Nash hytor entrance.
Embodiment one and embodiment two all amplification or improvement based on embodiment one, have same alike result and principle.Vacuum pump inlet pipeline still can be designed to diffusion cooling device preposition with vacuum pump and connect or series parallel structure; system call interception and chain, protective gear can install additional according to equipment actual demand, the automatic adjustment of such as whole system, automatically drop into exit, the function such as water level, hydraulic pressure are protected, chain, warning.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present utility model.Application of the present utility model, modifications and variations be will be readily apparent to persons skilled in the art.
Although embodiment of the present utility model is open as above, it is not restricted to listed in specification and mode of execution utilization.It can be applied to various applicable field of the present utility model completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. a vacuum pump front-located mode diffusion cooling device, it is characterized in that, one water jetting spout injection device is set between admission line and vacuum pump inlet, in described water jetting spout injection device, there is a cooling water passage, when air-flow carries out mixing diffusion or cooling through described cooling water passage and cooling water.
2. vacuum pump front-located mode diffusion cooling device as claimed in claim 1, it is characterized in that, described water jetting spout injection device comprises:
The Working-fluid intaking be connected with coolant outlet;
The driving fluid entrance be communicated with described admission line;
For driving fluid being carried out the diffusion cooling unit of diffusion or cooling;
And for collecting the header tank of described working fluid, it is arranged on described diffusion cooling unit outlet port.
3. vacuum pump front-located mode diffusion cooling device as claimed in claim 2, it is characterized in that, described water jetting spout injection device also comprises:
Air extracting seal pipeline, it is set on described diffusion cooling unit, and described air extracting seal pipeline is communicated with described admission line, the entrance of described air extracting seal pipeline is arranged on the upstream of described driving fluid entrance, and the position that described air extracting seal pipeline is connected with described header tank is also provided with a diffuser.
4. vacuum pump front-located mode diffusion cooling device as claimed in claim 2 or claim 3, it is characterized in that, described diffusion cooling unit is Water jetting type air ejector.
5. vacuum pump front-located mode diffusion cooling device as claimed in claim 2, is characterized in that,
Described diffusion cooling unit is atomizer nozzle;
Described driving fluid entrance is arranged on the below of the outlet of described atomizer nozzle;
Be arranged on described atomizer nozzle outlet port and mix the diffuser of diffusion for cooling water and driving fluid being carried out, the outlet port of described diffuser is connected to the entrance of described vacuum pump.
6. the vacuum pump front-located mode diffusion cooling device as described in claim 3 or 5, it is characterized in that, also comprise the trap that catchments, it is arranged on the pipeline between described header tank and described vacuum pump inlet.
7. vacuum pump front-located mode diffusion cooling device as claimed in claim 6, is characterized in that, described cooling water is demineralized water or through cooled water of condensation.
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| CN201520107737.3U CN204511992U (en) | 2015-02-14 | 2015-02-14 | Vacuum pump front-located mode diffusion cooling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803288A (en) * | 2019-10-25 | 2020-02-18 | 中航通飞研究院有限公司 | Heating, injecting and mixing device for cabin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803288A (en) * | 2019-10-25 | 2020-02-18 | 中航通飞研究院有限公司 | Heating, injecting and mixing device for cabin |
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