CN109869357A - Elastic steam jet ejector - Google Patents
Elastic steam jet ejector Download PDFInfo
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- CN109869357A CN109869357A CN201711285616.8A CN201711285616A CN109869357A CN 109869357 A CN109869357 A CN 109869357A CN 201711285616 A CN201711285616 A CN 201711285616A CN 109869357 A CN109869357 A CN 109869357A
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- nozzle
- steam inlet
- inlet pipe
- mandrel
- steam
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Abstract
The present invention provides a kind of elastic steam jet ejector, it is consisted of three parts: diffuser pipe, nozzle, suction chamber；Nozzle arrangements include: jet expansion, nozzle throat, nozzle steam inlet pipe, nozzle mandrel, casing, driving steam inlet, end screw thread, handwheel, steam inlet pipe screw thread；It is characterized in that nozzle arrangements further include: damper, pivot spring, shaft spring.Damper occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, and close to the coniform tip of nozzle mandrel, its shape is in elliptical American football shape, and elliptical long axis is overlapped with the axle center of nozzle mandrel.Pivot spring occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, and close to steam inlet pipe screw thread one end, it is cylindroid helical-coil extension spring.Shaft spring occupies one section of nozzle mandrel on the nozzle mandrel in casing, and among steam inlet pipe screw thread and end screw thread, it is cylindroid helical-coil extension spring.
Description
Technical field
The present invention relates to heat power engineerings, more particularly to a kind of elastic steam jet ejector.
Background technique
Steam jet ejector is using high steam draws low pressure steam, to improve setting by the low-pressure steam pressure of injection
It is standby.
Steam jet ejector is simple and reliable for structure, running expense is cheap and is widely used, as vacuum system, refrigeration are followed
Ring, chemical industry, the propulsion system of rocket and jet airplane or even core cooling system of nuclear power plant etc..
Steam jet ejector be widely used in weaving, papermaking, petroleum, thermoelectricity etc. using steam as the industry of power in, mainly
For promoting steam circulation, low-pressure steam pressure is improved.
The enterprise of these industries may be present in a factory or workshop due to generating low-pressure steam in process of production
The steam of a variety of level of pressure, elastic steam jet ejector can improve the pressure of low-pressure steam using the available energy of high steam.
The low-pressure steam that mistake is put with high steam energy regenerating recycles the flash steam etc. of condensed water in high temperature, thus by different
The integrated steam of level of pressure reaches significant energy-saving effect.
Such as:
1, there are self-contained thermoelectric plant in many large and medium-sized enterprise, by the pumping of steam turbine, back pressure steam supply.But due to Design of Steam Turbine
Extraction pressure (back-pressure) be it is fixed, often occur steam turbine steam supply can not meet production needed for situation, sprayed with steam
Emitter can be boosted to using the steam extraction or steam discharge of boiler live steam injection steam turbine meets user's requirement.
2, steam exhaust and waste heat recycling: using the steam of the steam ejection lower pressure of elevated pressures, intermediate a certain pressure is obtained
The steam of power, to achieve the purpose that low product high use or UTILIZATION OF VESIDUAL HEAT IN.
In production technology, recycles steam exhaust and reduce emptying, save steam consumption.
3, condensed water and flash steam recycling: add thermogenetic condensed water and flash steam to recycle steam in production technology, steam
Vapour boosting.
4, while injection low-pressure steam, it can be used as temperature-decreased pressure reducer and the requirement to desuperheat hydraulic pressure reduce.
Currently, being sprayed before operation by manual adjustment with more steam jet ejector seen in engineering in the market
Two important parameters of device: area of nozzle throat and nozzle location；In operation, the two important parameters of injector are fixed
, i.e. area of nozzle throat and nozzle location is fixed, cannot be at any time according to adjust automatically nozzle throat face situations such as admission pressure
Long-pending and nozzle location.
This fixed relationship is usually unable to satisfy actual needs, i.e. steam jet ejector cannot often work in best shape at any time
State causes the efficiency of steam jet ejector relatively low.
Summary of the invention
A kind of elasticity steam jet ejector, it is consisted of three parts: diffuser pipe, nozzle, suction chamber；
Diffuser pipe structure includes: outlet section, prismatic throat, the tapered entrance of flaring；
Nozzle arrangements include: jet expansion, nozzle throat, nozzle steam inlet pipe, nozzle mandrel, casing, drive steam into vapour
Mouth, end screw thread, handwheel, steam inlet pipe screw thread, damper, pivot spring, shaft spring.
Suction chamber structure includes: sucking room housing, air intake；
The connection of the entrance of suction chamber housing outlets and diffuser pipe, the larynx of the other end connection diffuser pipe of diffuser pipe entrance
The other end in portion, throat connects diffuser pipe outlet section；One end of nozzle mandrel is handwheel, and the other end of nozzle mandrel is in circular cone
Shape, coniform tip is directed toward the nozzle throat for being located at steam inlet pipe end, has two sections of screw threads on nozzle mandrel, close to one section of handwheel
Screw thread is threadedly engaged with the end on casing, and one section of screw thread at middle part is threadedly engaged with steam inlet pipe, and steam inlet pipe is attached to internal surface of sleeve pipe can
With sliding, casing is inserted and fixed from sucking room housing, and casing connects nozzle entrance, nozzle in the opening of suction chamber enclosure interior
Throat's entrance of diffuser pipe is directed toward in outlet, and casing has driving steam inlet on the side wall of suction chamber hull outside tube body, is managed
There is end screw thread in the end of body.
Nozzle steam inlet pipe, it is attached to internal surface of sleeve pipe, and can retreat sliding, is not able to rotate, steam inlet pipe is inwardly close to diffuser pipe
The end of side, is connected with nozzle entrance；There is end plate in the end of the outside side of steam inlet pipe, and end plate central has steam inlet pipe screw thread,
There are also several admission openings on end plate, for driving steam to enter nozzle steam inlet pipe.
The damper, it occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, close to nozzle core
The coniform tip of axis, its shape is in elliptical American football shape, and elliptical long axis is overlapped with the axle center of nozzle mandrel.
The pivot spring, it occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, close into vapour
Pipe screw thread one end, it is cylindroid helical-coil extension spring, and the center line of spring is overlapped with the axle center of nozzle mandrel.
The shaft spring on its nozzle mandrel in casing, occupies one section of nozzle mandrel, in steam inlet pipe screw thread and
It holds among screw thread, it is cylindroid helical-coil extension spring, and the center line of spring is overlapped with the axle center of nozzle mandrel.
Detailed description of the invention
Fig. 1 is the overall pattern of elastic steam jet ejector embodiment of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, present invention is further described in detail.
Fig. 1 gives the overall pattern of elastic steam jet ejector of the invention.
Elasticity steam jet ejector of the invention mainly consists of three parts: diffuser pipe 10, nozzle 20, suction chamber 30.
The structure of diffuser pipe 10 includes: outlet section 12, prismatic throat 14, the tapered entrance 16 of flaring.
The structure of nozzle 20 include: jet expansion 21, nozzle steam inlet pipe 23, nozzle mandrel 22, casing 24, driving steam into
Steam ports 25, end screw thread 26, handwheel 27, steam inlet pipe screw thread 28, damper 41, pivot spring 42, shaft spring 43.
Smallest cross-sectional between jet expansion 21 and nozzle steam inlet pipe 23 is nozzle throat, and nozzle throat front end connects nozzle
Entrance.22 position of nozzle mandrel is adjusted by handwheel 27 and end screw thread 26, and handwheel 27 is rotated with mandrel 22 simultaneously and retreated.
The top of nozzle mandrel 22 is cone, it is directed toward nozzle throat, when it enters or leaves nozzle throat, nozzle
The circulation area of throat just becomes smaller or larger.
The structure of suction chamber 30 includes: sucking room housing 32, air intake 34.
The structure of the adjusting part of elasticity steam jet ejector of the invention includes:
Jet expansion 21, nozzle steam inlet pipe 23, nozzle mandrel 22, casing 24, end screw thread 26, handwheel 27, steam inlet pipe screw thread
28, damper 41, pivot spring 42, shaft spring 43.
Two adjusting units are respectively constituted with upper-part:
1, manual adjustment unit
It include: jet expansion 21, nozzle steam inlet pipe 23, nozzle mandrel 22, casing 24, end screw thread 26, handwheel 27, steam inlet pipe
Screw thread 28.
Holding screw thread 26 is coarse-pitch thread clockwise, when rotating clockwise handwheel 27, due to holding the effect of screw thread 26, nozzle mandrel
22 promote quickly into sucking room housing 32；Steam inlet pipe screw thread 28 is fine thread clockwise, when rotating clockwise handwheel 27, by
In the collective effect of steam inlet pipe screw thread 28 and end screw thread 26, nozzle steam inlet pipe 23 is pushed ahead relatively slow.
So when rotating clockwise handwheel 27, total effect is
(1) nozzle steam inlet pipe 23 is pushed ahead together with jet expansion 21, and jet expansion 21 arrives the entrance of diffuser pipe throat 14
Distance reduce；
(2) simultaneously, the coniform end of nozzle mandrel 22 also reduces with nozzle throat distance, i.e., nozzle throat circulation area becomes
It is small.2, automatic adjustment unit
Specifically include that damper 41, pivot spring 42, shaft spring 43.
Damper 41 occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, close to nozzle mandrel circle
Cone cell tip, its shape is in elliptical American football shape, and elliptical long axis is overlapped with the axle center of nozzle mandrel.
Pivot spring 42 occupies one section of nozzle mandrel on the nozzle mandrel in nozzle steam inlet pipe, close to steam inlet pipe spiral shell
Line one end, it is cylindroid helical-coil extension spring, and the center line of spring is overlapped with the axle center of nozzle mandrel.
Shaft spring 43 occupies one section of nozzle mandrel on the nozzle mandrel in casing, in steam inlet pipe screw thread and end spiral shell
Among line, it is cylindroid helical-coil extension spring, and the center line of spring is overlapped with the axle center of nozzle mandrel.
When steam flow rate increases in nozzle steam inlet pipe 23, when flowing through damper 41,41 front and back steam pressure difference of damper increases,
Damper 41 is pulled pivot spring 42 to stretch by the biggish power for being directed toward nozzle throat, damper 41 by nozzle mandrel 22
It is long, cause the coniform end of nozzle mandrel 22 close to nozzle throat, nozzle circulation area reduces.
When driving 25 initial steam pressure of steam inlet increases, steam is in casing 24 with pushed at high pressure nozzle steam inlet pipe 23, band
Moving axis bar spring 43 extends, and causes nozzle steam inlet pipe 23 and jet expansion 21 mobile to diffuser pipe throat, jet expansion 21 and expansion
Pressure pipe throat distance reduces.
Claims (5)
1. a kind of elasticity steam jet ejector, it is consisted of three parts: diffuser pipe, nozzle, suction chamber；Diffuser pipe structure includes: gradually
The outlet section of expansion, prismatic throat, tapered entrance；Nozzle arrangements include: jet expansion, nozzle throat, nozzle into vapour
Pipe, nozzle mandrel, casing, driving steam inlet, end screw thread, handwheel, steam inlet pipe screw thread；Suction chamber structure includes: suction chamber
Shell, air intake；The other end of the connection of the entrance of suction chamber housing outlets and diffuser pipe, diffuser pipe entrance connects diffuser pipe
Throat, the other end of throat connects diffuser pipe outlet section；One end of nozzle mandrel is handwheel, and the other end of nozzle mandrel is in circle
Cone cell, coniform tip is directed toward the nozzle throat for being located at steam inlet pipe end, has two sections of screw threads on nozzle mandrel, close to the one of handwheel
Section screw thread is threadedly engaged with the end on casing, and one section of screw thread at middle part is threadedly engaged with steam inlet pipe, and steam inlet pipe is attached to internal surface of sleeve pipe
It can slide, casing is inserted and fixed from sucking room housing, and casing connects nozzle entrance, spray in the opening of suction chamber enclosure interior
Throat's entrance of diffuser pipe is directed toward in mouth outlet, and casing has driving steam inlet on the side wall of suction chamber hull outside tube body,
There is end screw thread in the end of tube body, it is characterised in that nozzle arrangements further include: damper, pivot spring, shaft spring.
2. a kind of elastic steam jet ejector described in accordance with the claim 1, it is characterised in that: the nozzle steam inlet pipe, it is attached to
Internal surface of sleeve pipe, can retreat sliding, not be able to rotate, and steam inlet pipe inwardly close to the end of diffuser pipe side, is connected with nozzle entrance；
There is an end plate in the end of the outside side of steam inlet pipe, and end plate central has a steam inlet pipe screw thread, and there are also several admission openings on end plate, for driving
Dynamic steam enters nozzle steam inlet pipe.
3. a kind of elastic steam jet ejector described in accordance with the claim 1, it is characterised in that: the damper, it nozzle into
On nozzle mandrel in steam pipe, one section of nozzle mandrel is occupied, close to the coniform tip of nozzle mandrel, its shape is in elliptical
American football shape, elliptical long axis are overlapped with the axle center of nozzle mandrel.
4. a kind of elastic steam jet ejector described in accordance with the claim 1, it is characterised in that: the pivot spring, it is in nozzle
On nozzle mandrel in steam inlet pipe, one section of nozzle mandrel is occupied, close to steam inlet pipe screw thread one end, it is that cylindrical screw stretches bullet
The center line of spring, spring is overlapped with the axle center of nozzle mandrel.
5. a kind of elastic steam jet ejector described in accordance with the claim 1, it is characterised in that: the shaft spring, it is in casing
On interior nozzle mandrel, one section of nozzle mandrel is occupied, among steam inlet pipe screw thread and end screw thread, it is that cylindrical screw stretches bullet
The center line of spring, spring is overlapped with the axle center of nozzle mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285616.8A CN109869357A (en) | 2017-12-02 | 2017-12-02 | Elastic steam jet ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285616.8A CN109869357A (en) | 2017-12-02 | 2017-12-02 | Elastic steam jet ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109869357A true CN109869357A (en) | 2019-06-11 |
Family
ID=66916825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285616.8A Withdrawn CN109869357A (en) | 2017-12-02 | 2017-12-02 | Elastic steam jet ejector |
Country Status (1)
| Country | Link |
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| CN (1) | CN109869357A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2056546C1 (en) * | 1992-09-23 | 1996-03-20 | Коллективная фирма "КОМТЭКС" | Vacuum ejector |
| CN201916260U (en) * | 2011-01-26 | 2011-08-03 | 双良节能***股份有限公司 | Steam ejector with adjustable nozzle |
| DE202013104717U1 (en) * | 2013-10-21 | 2015-01-22 | Klaus Prenzler | Device for limiting the flow of a fluid, in particular the flow of water in a shower |
| CN104379941A (en) * | 2012-06-12 | 2015-02-25 | 永久太阳能有限公司 | An ejector |
| CN204386959U (en) * | 2014-09-29 | 2015-06-10 | 江苏大学 | A kind of area ratio adjustable jet pump |
| CN105179328A (en) * | 2015-08-05 | 2015-12-23 | 国家***天津海水淡化与综合利用研究所 | Dynamic self-adjusting steam-jet pump |
| CN106861961A (en) * | 2017-03-10 | 2017-06-20 | 山东大学 | A kind of self-adjustable injector |
-
2017
- 2017-12-02 CN CN201711285616.8A patent/CN109869357A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2056546C1 (en) * | 1992-09-23 | 1996-03-20 | Коллективная фирма "КОМТЭКС" | Vacuum ejector |
| CN201916260U (en) * | 2011-01-26 | 2011-08-03 | 双良节能***股份有限公司 | Steam ejector with adjustable nozzle |
| CN104379941A (en) * | 2012-06-12 | 2015-02-25 | 永久太阳能有限公司 | An ejector |
| DE202013104717U1 (en) * | 2013-10-21 | 2015-01-22 | Klaus Prenzler | Device for limiting the flow of a fluid, in particular the flow of water in a shower |
| CN204386959U (en) * | 2014-09-29 | 2015-06-10 | 江苏大学 | A kind of area ratio adjustable jet pump |
| CN105179328A (en) * | 2015-08-05 | 2015-12-23 | 国家***天津海水淡化与综合利用研究所 | Dynamic self-adjusting steam-jet pump |
| CN106861961A (en) * | 2017-03-10 | 2017-06-20 | 山东大学 | A kind of self-adjustable injector |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190611 |
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| WW01 | Invention patent application withdrawn after publication |