CN202350389U - Multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump - Google Patents
Multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump Download PDFInfo
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- CN202350389U CN202350389U CN2011205103970U CN201120510397U CN202350389U CN 202350389 U CN202350389 U CN 202350389U CN 2011205103970 U CN2011205103970 U CN 2011205103970U CN 201120510397 U CN201120510397 U CN 201120510397U CN 202350389 U CN202350389 U CN 202350389U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model relates to multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump and belongs to fields of industrial waste heat recovering and vacuum pumps. The ejector type heat pump and the high-pressure-ratio vacuum pump adopt a multiple-effect cascade structure of multistage series-parallel connection and driving fluid classification work, wherein the structure comprises a first-stage ejector, a final-stage ejector and a final-stage flow distributor which are sequentially in cascade connection; both the first-stage ejector and the final-stage ejector are composed of inlet sections provided with nozzles, mixing sections, throats and diffusion sections; the final-stage flow distributor is provided with a final-stage mixed eduction port and a mixed fluid outlet; and a first-stage ejecting port of the first-stage ejector is connected with the final-stage mixed eduction port of a final-stage diffusion section of the final-stage ejector through an ejecting communicating pipe. According to the utility model, a newly designed multiple-effect cascade ejecting way is adopted to ensure that the ejecting efficiency is greatly increased and the overall ejecting efficiency can be increased by more than 2-5 times. The multiple-effect cascade ejecting way can be used on high-efficiency high-pressure-ratio ejector type heat pumps and vacuum pumps.
Description
Technical field
The utility model belongs to industrial afterheat recovery and vacuum pump technology field, particularly a kind of multiple-effect superposition type injecting type heat pump and high pressure ratio vavuum pump.
Background technology
Injector The Application of Technology field very extensively; Comprise and adopt steam, other gases at high pressure and liquid to carry out as drive fluid that two kinds of direct injections of pressure different fluids mix and the fluid-mixing that produces intermediate pressure is used in order to downstream process; Utilize injection low-pressure gas characteristic and produce all kinds of vavuum pumps of vacuum effectiveness etc.; Wherein adopt steam jet ejector to press in through steam turbine to draw gas and be used for heat supply, can obtain good energy-saving effect in theory as the low-pressure turbine exhaust of drive fluid injection in steam power plant.Need in other commercial production flow process to keep technical process such as vacuum or separating substances also to make injector The Application of Technology scope further enlarge.
The structure of traditional injector is as shown in Figure 1; This injector 1 is made up of the entrance that is provided with nozzle 23, mixer 4, throat 5 and 6 of the diffusers that connect successively; Among Fig. 1; Drive fluid A mixes in the one-level emitter construction with driven fluid B, and sees mist C after pressurized off.
But; Present in esse problem is; At present traditional fluid ejector is owing to being subject to its drive fluid and being limited by the pressure ratio of draw fluid; Often only within the scope of certain compression ratio and expansion ratio, just have bigger injection ratio, and its injection reasonably compresses expansion ratio scope when than usually about 02～0.8 if depart from it; Then its injection loses using value than the order of magnitude that greatly is reduced to 1% in cogeneration of heat and power waste heat recovery field, all kinds of gas and other separating substances and hybrid technique field etc.As for the bigger liquid-jet vacuum pump structure of pressure ratio scope; Because its major function is to keep the required necessary vacuum of technical process but not for a large amount of draws low pressure gases; Often do not stint and bear lower injection efficient, but its energy consumption paid and initial cost cost are bigger in order to obtain high vacuum.Therefore, traditional fluid ejector only in certain compression ratio range (common about 2～3) efficient higher, exceed certain limit then efficient sharply descend, also just therefore injector The Application of Technology scope and scale receive the restriction of its inherent characteristic.
Therefore, be necessary to seek the design and the structure thereof of brand-new injecting type heat pump or high pressure ratio vavuum pump, improving the injection performance of injector, and significantly reduce the cost and the operation energy consumption of injector.
The utility model content
The purpose of the utility model is for overcoming the weak point of prior art; A kind of injecting type heat pump and high pressure ratio vavuum pump that adopts multiple-effect overlapping injection mode proposed; Can significantly reduce the irreversible loss of injector; Be implemented in significantly improve under the high pressure ratio situation low-pressure fluid injection than and significantly increase its with the mixing of drive fluid after the pressure of fluid, creatively solved the injection that the injector technology is applied to injecting type heat pump and vavuum pump under the high pressure ratio condition and compared to hang down and reach the too high technical barrier of energy consumption.
The specific descriptions of the utility model are:
A kind of injecting type heat pump and high pressure ratio vavuum pump that adopts multiple-effect overlapping injection mode; It is characterized in that; Described injecting type heat pump and high pressure ratio vavuum pump adopt the multiple-effect superposition type structure of multistage connection in series-parallel and drive fluid classification acting, and this multiple-effect superposition type structure comprises chopped-off head injector, final stage injector, the final stage flow distributor of superposition type connection successively; This chopped-off head injector is formed by the entrance that is provided with nozzle, mixer, throat and the diffuser that are connected successively with the final stage injector; The final stage flow distributor has final stage and mixes outlet and fluid-mixing outlet, and the chopped-off head ejecting port of chopped-off head injector mixes outlet with the final stage of the final stage diffuser of final stage injector and links to each other through injection communicating pipe;
The course of work of the utility model is: the import of the chopped-off head nozzle of the chopped-off head entrance of drive fluid entering chopped-off head injector; Drive fluid and driving fluid final stage nozzle through the entrance of entering final stage injector behind chopped-off head throat, the chopped-off head diffuser after the chopped-off head mixer mixes; And mix with the driven fluid of final stage injector ejecting port after the throat of final stage injector gets into the final stage diffuser; A part is sent to hiigh pressure stage injection mixing compression through final stage mixing outlet after getting into the final stage flow distributor then, and remainder is seen off as fluid-mixing through the fluid-mixing outlet.
Above-mentioned injecting type heat pump and high pressure ratio vavuum pump; Also can be included between described chopped-off head injector and the final stage injector and to connect one or connect a plurality of intergrade injectors successively; Wherein, The chopped-off head diffuser of chopped-off head injector at first links to each other with the entrance of intergrade injector; Behind intergrade injector diffuser, link to each other with the entrance of final stage injector, the final stage of final stage flow distributor is mixed outlet and is linked to each other through injection communicating pipe with the intergrade ejecting port of intergrade injector again, and the chopped-off head ejecting port of chopped-off head injector links to each other through injection communicating pipe with the mixing outlet of the intergrade diffuser of superposition type intergrade.
The inside of above-mentioned final stage flow distributor can be provided with or not be provided with heat exchanger.
The chopped-off head nozzle of above-mentioned chopped-off head injector and the nozzle of final stage injector adopt adjustable or stationary structure nozzle.
Characteristics of the utility model and beneficial effect:
Why injecting type heat pump of the utility model and high pressure ratio vavuum pump are referred to as multiple-effect overlapping injection mode; Be because drive fluid (A) is not once to shift to driven fluid with its hiigh pressure stage energy in injector; But multiple fractionation shifts; Wherein the fluid of the equal injection mixing portion of each grade lower pressure is to increase its flow; And continue acting and the more low-pressure fluid of injection at next stage, and realized initial high-order momentum cascade utilization, can not losing of low injection mixed process significantly, therefore be referred to as " multiple-effect ".Simultaneously, the driven fluid of previous stage comes from the back one-level and mixes the fluid of pressurization elevated pressures afterwards, and the material of fluids at different levels and energy exchange relation form " overlapping " mode.Above-mentioned just multiple-effect overlapping injection mode makes the injector that adopts the utility model design under the high pressure ratio condition, (comprise the compression ratio of driven fluid or the expansion ratio or the low ratio of pressure of pressure scaling up and drive fluid) still can obtain higher injection ratio.
The utility model be the employing injecting type heat pump that in solving present actual engineering, exists how its pressure of efficient absorption far below driving gas by injection gas and make fluid-mixing reach the difficult problem of higher blend pressure; The perhaps efficient fine setting that realizes higher vacuum under the high pressure ratio condition; The complete technological solution that proposes; Avoided adopting conventional injecting type heat pump or vavuum pump owing to be difficult to adapt to each power pressure of certainly existing in the actual engineering and parameter does not match and causes injection to compare low, energy saving and economy crossing difference and make the serious limited problem of ejector applications scope, this multiple-effect superposition type injecting type heat pump is than the ejector capacity raising of conventional spray formula heat pump more than 2～5 times.
Compare with existing emitter construction, can realize basically that under ubiquitous engineering specifications the exhaust steam absorption efficiency is suitable, and the effect that initial cost significantly reduces; And because injector belongs to pure mechanical part; Do not have any rotation or moving-member, its operational reliability is higher, can significantly enlarge injector The Application of Technology field thus; Improve the comprehensive utilization of energy benefit of therrmodynamic system, have the engineering practical value.
Description of drawings
Fig. 1 is the structural representation of traditional injector;
Fig. 2 is the injecting type heat pump of the utility model multiple-effect overlapping injection mode of adopting two-layer configuration and the example structure sketch map of high pressure ratio vavuum pump;
Fig. 3 is the injecting type heat pump of the utility model multiple-effect overlapping injection mode of adopting tertiary structure and the example structure sketch map of high pressure ratio vavuum pump.
Each unit number and title are following among Fig. 1,2,3:
Superposition type chopped-off head injector 1; Chopped-off head nozzle 2; Chopped-off head entrance 3; Chopped-off head mixer 4; Chopped-off head throat 5; Chopped-off head diffuser 6; Superposition type intergrade injector 7; Superposition type final stage injector 8; Final stage flow distributor 9; Fluid-mixing outlet 10; Heat exchanger 11; Chopped-off head ejecting port 12; Intergrade ejecting port 21; Intergrade nozzle 22; Intergrade diffuser 26; Intergrade is mixed outlet 27; Intergrade injection communicating pipe 28; Final stage ejecting port 31; Final stage nozzle 32; Final stage diffuser 36; Final stage is mixed outlet 37; Final stage injection communicating pipe 38; Drive fluid A; Driven fluid B; Fluid-mixing C.
The specific embodiment
The injecting type heat pump and the high pressure ratio vavuum pump of the employing multiple-effect overlapping injection mode that the utility model proposes specify as follows in conjunction with accompanying drawing and embodiment:
The specific embodiment of the utility model is following:
Embodiment 1: the injecting type heat pump and the high pressure ratio vavuum pump that adopt the multiple-effect overlapping injection mode of two-stage structure; As shown in Figure 2; This embodiment adopts the superposition type structure of twin-stage connection in series-parallel and drive fluid classification acting, comprises chopped-off head injector 1, final stage injector 8, the final stage flow distributor 9 of superposition type connection successively; This chopped-off head injector 1 and final stage injector 8 are by the entrance that is provided with nozzle 3 that is connected successively, mixer 4, throat 5 and 6 compositions of diffuser; Final stage flow distributor 9 has final stage and mixes outlet 37 and fluid-mixing outlet 10, and the chopped-off head ejecting port 12 of chopped-off head injector 1 mixes outlet 37 with the final stage of the final stage diffuser 36 of final stage injector 8 and links to each other through final stage injection communicating pipe 38; Wherein, The import of the chopped-off head nozzle 2 of the chopped-off head entrance 3 of drive fluid A entering superposition type chopped-off head injector 1; Drive fluid and driving fluid final stage nozzle 32 through the entrance of entering superposition type final stage injectors 8 behind chopped-off head throat 5, the chopped-off head diffuser 6 after chopped-off head mixer 4 mixes; And mix with the driven fluid B of final stage ejecting port 31 after the throat of superposition type final stage injector 8 gets into final stage diffuser 36; Get into final stage flow distributor 9 a back part then and mix outlet 37 through final stage and be sent to the hiigh pressure stage injection and mix compression, remainder is seen off as fluid-mixing C through fluid-mixing outlet 10.
The inside of above-mentioned final stage flow distributor 9 can be provided with or not be provided with heat exchanger 11.
The nozzle 32 of the chopped-off head nozzle 2 of superposition type chopped-off head injector 1 and superposition type final stage injector 8 can adopt adjustable or the stationary structure nozzle.
Embodiment 2: the injecting type heat pump and the high pressure ratio vavuum pump that adopt the multiple-effect overlapping injection mode of tertiary structure; As shown in Figure 3; Embodiment 2 is with the different of the foregoing description 1; Set up an intergrade emitter construction; Fluid inlet and outlet flow processs wherein at different levels are correspondingly made certain adjustment; The concrete adjustment as follows: the chopped-off head diffuser 6 of superposition type chopped-off head injector 1 at first links to each other with the entrance of superposition type intergrade injector 7; Behind intergrade diffuser 26, link to each other with the entrance of superposition type final stage injector 8, the final stage of the final stage flow distributor 9 of superposition type final stage 8 is mixed outlet 37 and is linked to each other through final stage injection communicating pipe 38 with the intergrade ejecting port 21 of superposition type intergrade 7 again, and the chopped-off head ejecting port 12 of superposition type chopped-off head injector 1 mixes outlet 27 with the intergrade of the intergrade diffuser 26 of superposition type intergrade 7 and links to each other through intergrade injection communicating pipe 28.Other part of this tertiary structure is identical with two-stage structure among the embodiment 1.This tertiary structure system is particularly suitable for bigger absorption heat pump and the field of vacuum of pressure ratio between drive fluid and fluid-mixing, driven fluid and the fluid-mixing.
The utility model also can connect a plurality of intergrade injectors successively between described chopped-off head injector and final stage injector; Be superposition type final stage ejecting port suction wherein by injector by draw fluid; Final stage diffuser exit portion fluid-mixing is sent to the previous stage ejecting port and is pressurizeed by injection; So analogize, the fluid pressure that superposition type chopped-off head ejecting port sucks is than much higher by the original pressure of draw fluid, thereby but the drive fluid of the elevated pressures that gets into by the chopped-off head nozzle just injection obtain the more fluid-mixing of high pressure; And pass out to next stage by the chopped-off head diffuser and continue the injection acting, can improve overall injection efficient more than 2～5 times thus.This multiple-effect superposition type injection mode can be used as efficient high pressure ratio injecting type heat pump and vavuum pump.
Need to prove; The utility model provides how to solve adopts the injector technology to be applied to the method that injecting type heat pump and field of vacuum under the high pressure ratio condition realize the problem that efficient injection mixes; And the different practical implementation measures and the practical implementation device of different structure can be arranged according to this overall solution; The above-mentioned specific embodiment only is wherein two kinds, and the embodiment of other similar simple deformation all falls into the protection domain of the utility model.
Claims (4)
1. multiple-effect superposition type injecting type heat pump and high pressure ratio vavuum pump; It is characterized in that; Described injecting type heat pump and high pressure ratio vavuum pump adopt the multiple-effect superposition type structure of multistage connection in series-parallel and drive fluid classification acting, and this multiple-effect superposition type structure comprises chopped-off head injector, final stage injector, the final stage flow distributor of superposition type connection successively; This chopped-off head injector is formed by the entrance that is provided with nozzle, mixer, throat and the diffuser that are connected successively with the final stage injector; The final stage flow distributor has final stage and mixes outlet and fluid-mixing outlet, and the chopped-off head ejecting port of chopped-off head injector mixes outlet with the final stage of the final stage diffuser of final stage injector and links to each other through injection communicating pipe.
2. injecting type heat pump as claimed in claim 1 and high pressure ratio vavuum pump; It is characterized in that; Also be included between described chopped-off head injector and the final stage injector and connect one or connect a plurality of intergrade injectors successively; Wherein, the chopped-off head diffuser of chopped-off head injector at first links to each other with the entrance of intergrade injector, behind intergrade injector diffuser, links to each other with the entrance of final stage injector again; The final stage of final stage flow distributor is mixed outlet and is linked to each other through injection communicating pipe with the intergrade ejecting port of intergrade injector, and the chopped-off head ejecting port of chopped-off head injector links to each other through injection communicating pipe with the mixing outlet of the intergrade diffuser of superposition type intergrade.
3. injecting type heat pump as claimed in claim 1 and high pressure ratio vavuum pump is characterized in that, the set inside of described final stage flow distributor or heat exchanger is not set.
4. injecting type heat pump as claimed in claim 1 and high pressure ratio vavuum pump is characterized in that, the chopped-off head nozzle of described chopped-off head injector and the nozzle of final stage injector adopt adjustable or stationary structure nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205103970U CN202350389U (en) | 2011-12-08 | 2011-12-08 | Multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205103970U CN202350389U (en) | 2011-12-08 | 2011-12-08 | Multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump |
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| Publication Number | Publication Date |
|---|---|
| CN202350389U true CN202350389U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205103970U Expired - Fee Related CN202350389U (en) | 2011-12-08 | 2011-12-08 | Multiple-effect cascade ejector type heat pump and high-pressure-ratio vacuum pump |
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| CN (1) | CN202350389U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435017A (en) * | 2011-12-08 | 2012-05-02 | 张军 | Jet type heat pump adopting multi-effect cascade ejecting mode and large pressure ratio vacuum pump |
| CN105833559A (en) * | 2016-05-11 | 2016-08-10 | 耒阳金悦科技发展有限公司 | Industrial separation equipment |
| CN105854328A (en) * | 2016-05-11 | 2016-08-17 | 耒阳金悦科技发展有限公司 | Industrial separation method |
| CN114832576A (en) * | 2022-04-08 | 2022-08-02 | 中南大学 | Multi-stage injection type molecular sieve purifier |
-
2011
- 2011-12-08 CN CN2011205103970U patent/CN202350389U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435017A (en) * | 2011-12-08 | 2012-05-02 | 张军 | Jet type heat pump adopting multi-effect cascade ejecting mode and large pressure ratio vacuum pump |
| CN105833559A (en) * | 2016-05-11 | 2016-08-10 | 耒阳金悦科技发展有限公司 | Industrial separation equipment |
| CN105854328A (en) * | 2016-05-11 | 2016-08-17 | 耒阳金悦科技发展有限公司 | Industrial separation method |
| CN114832576A (en) * | 2022-04-08 | 2022-08-02 | 中南大学 | Multi-stage injection type molecular sieve purifier |
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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: 20120725 Termination date: 20171208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |