CN109869359A - Steam jet ejector - Google Patents
Steam jet ejector Download PDFInfo
- Publication number
- CN109869359A CN109869359A CN201711285527.3A CN201711285527A CN109869359A CN 109869359 A CN109869359 A CN 109869359A CN 201711285527 A CN201711285527 A CN 201711285527A CN 109869359 A CN109869359 A CN 109869359A
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- Prior art keywords
- nozzle
- steam inlet
- screw thread
- steam
- inlet pipe
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- 239000007921 spray Substances 0.000 claims description 3
- 210000000867 larynx Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Abstract
The present invention provides a kind of 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, driving steam inlet, end screw thread, handwheel, steam inlet pipe screw thread；Suction chamber structure includes: sucking room housing, air intake；The connection of the entrance of suction chamber housing outlets and diffuser pipe, the throat of the other end connection diffuser pipe of diffuser pipe entrance, the other end of throat connect diffuser pipe outlet section；One end of nozzle mandrel is handwheel, the other end of nozzle mandrel is in coniform, it is directed toward the nozzle throat for being located at steam inlet pipe end in coniform tip, there are two sections of screw threads on nozzle mandrel, one section of screw thread close to handwheel is threadedly engaged with the end on casing, 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 and can slide.
Description
Technical field
The present invention relates to heat power engineerings, more particularly to a kind of 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, 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, drawn with vapour vapour
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, in the market with more steam jet ejector seen in engineering, in performance adjustment, two of injector
Important parameter is to be bound together, i.e. area of nozzle throat and nozzle location adjusts together, when area of nozzle throat becomes smaller,
Nozzle location moves forward simultaneously.
This adjustment relationship is usually unable to satisfy actual needs, i.e. steam jet ejector cannot often work in optimum state,
Cause the efficiency of steam jet ejector relatively low.
Summary of the invention
A kind of 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；
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 in coniform, coniform tip, which is directed toward, to be located at into vapour for the other end of nozzle mandrel
The nozzle throat of tube end has two sections of screw threads on nozzle mandrel, and one section of screw thread close to handwheel is threadedly engaged with the end on casing,
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 and 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.
Nozzle arrangements further include adjustment wheel, and adjustment wheel is integral structure with end screw thread.
The integral structure, it refers to that both adjustment wheel and end screw thread are an overall structures, adjustment wheel inner hole and end spiral shell
The outer circle that line is one is fixed together, and when rotation adjustment wheel, end screw thread rotates simultaneously；There is ring edge in end screw thread other end,
The plane of ring edge is vertical with end thread center's line, it is located in two layers of washer of cannula tip, can slide rotation.
The nozzle steam inlet pipe, it is attached to internal surface of sleeve pipe, and can retreat sliding, is not able to rotate, and steam inlet pipe is inwardly close to expansion
The end of pressure pipe 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 spiral shell
Line, there are also several admission openings on end plate, for driving steam to enter nozzle steam inlet pipe.
Detailed description of the invention
Fig. 1 is the overall pattern of existing steam jet ejector；
Fig. 2 is the overall pattern of steam jet ejector embodiment of the present 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 existing steam jet ejector.
Existing steam jet ejector 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.
Smallest cross-sectional between jet expansion 21 and nozzle steam inlet pipe 23 is nozzle throat, and nozzle throat front end connects nozzle
Entrance.Nozzle mandrel 22 is adjusted by handwheel 27, by end screw thread 26, while being rotated and being retreated.The top of nozzle mandrel 22 is
Cone, when it enters or leaves nozzle throat, the circulation area of nozzle throat is just become smaller or larger.
The structure of suction chamber 30 includes: sucking room housing 32, air intake 34.
The structure of the adjusting part of existing steam jet ejector 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。
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 are
1, nozzle steam inlet pipe 23 is pushed ahead together with jet expansion 21, the entrance of jet expansion 21 to diffuser pipe throat 14
Distance reduces；
2, meanwhile, the coniform end of nozzle mandrel 22 also reduces with nozzle throat distance, i.e., nozzle throat circulation area becomes
It is small.
As it can be seen that the adjusting of existing steam jet ejector is inflexible, it cannot individually adjust jet expansion and enter to diffuser pipe throat
The distance of mouth, can not individually adjust nozzle throat circulation area.
Fig. 2 gives the overall pattern of steam jet ejector embodiment of the present invention.
Steam jet ejector of the present 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, adjustment wheel 29.
Smallest cross-sectional between jet expansion 21 and nozzle steam inlet pipe 23 is nozzle throat, and nozzle throat front end connects nozzle
Entrance.
Nozzle mandrel 22 is adjusted by handwheel 27, while being rotated and being retreated, the top of nozzle mandrel 22 be it is conical, it into
Enter or leave nozzle throat, the circulation area of nozzle throat just becomes smaller or larger.Therefore, the main function of handwheel 27 is adjustment spray
The circulation area of mouth throat.
There is end screw thread 26 between adjustment wheel 29 and nozzle mandrel 22, when 29 rotation of adjustment wheel, nozzle mandrel 22 does not rotate, nozzle
Mandrel 22 and nozzle steam inlet pipe 23 are translatable advance and retreat together.Therefore, the main function of adjustment wheel 29 is to adjust jet expansion to diffusion
The distance of pipe throat.
The structure of suction chamber 30 includes: sucking room housing 32, air intake 34.
It can be seen that steam jet ejector of the present invention, improves the adjusting part of existing steam jet ejector, by a hand
Wheel is individually adjusted, and becomes a handwheel and an adjustment wheel is adjusted in two steps.
The adjusting part-structure of steam jet ejector of the present 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, adjustment wheel 29.
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 total effect is when individually rotating clockwise handwheel 27
1, nozzle steam inlet pipe 23 is pushed ahead together with jet expansion 21, entrance of the jet expansion 21 apart from diffuser pipe throat 14
Distance reduce；
2, meanwhile, the coniform end of nozzle mandrel 22 also reduces with nozzle throat distance, i.e., nozzle throat circulation area becomes
It is small.
For steam jet ejector of the invention, after rotating handwheel 27, the variation of nozzle throat circulation area is fixed down
Come, and jet expansion 21 arrives the distance of the entrance of diffuser pipe throat 14, also to change after 29 rotation of adjustment wheel.
That is, first passing through individually rotation handwheel 27, nozzle throat circulation area is adjusted.
Then, handwheel 27 is motionless, and individually rotation adjustment wheel 29, drives nozzle mandrel 22 to retreat, while driving nozzle into vapour
Pipe 23 and nozzle are retreated, so that it may adjust jet expansion to diffuser pipe throat entrance distance.
As it can be seen that the flexible adjustment of steam jet ejector of the present invention, can individually adjust nozzle throat circulation area and tune
Distance of the section jet expansion to diffuser pipe throat entrance.
Claims (3)
1. a kind of steam jet ejector, it is consisted of three parts: diffuser pipe, nozzle, suction chamber；Diffuser pipe structure includes: flaring
Outlet section, prismatic throat, tapered entrance；Nozzle arrangements include: jet expansion, nozzle throat, nozzle steam inlet pipe, spray
Mouth mandrel, casing, driving steam inlet, end screw thread, handwheel, steam inlet pipe screw thread；Suction chamber structure include: 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, it is characterised in that nozzle arrangements further include adjustment wheel, and adjustment wheel is integral structure with end screw thread.
2. a kind of steam jet ejector described in accordance with the claim 1, it is characterised in that: the integral structure, it refers to adjustment wheel
It is an overall structure with both screw threads are held, adjustment wheel inner hole is fixed together with one, screw thread outer circle is held, when rotation adjustment
When wheel, end screw thread rotates simultaneously；There is ring edge in end screw thread other end, and the plane of ring edge is vertical with end thread center's line,
It is located in two layers of washer of cannula tip, can slide rotation.
3. a kind of steam jet ejector described in accordance with the claim 1, it is characterised in that: the nozzle steam inlet pipe, it is attached to casing
Inner wall, 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；Into vapour
There is an end plate in the end for managing outside side, and end plate central has a steam inlet pipe screw thread, and there are also several admission openings on end plate, steams for driving
Vapour enters nozzle steam inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285527.3A CN109869359A (en) | 2017-12-02 | 2017-12-02 | Steam jet ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285527.3A CN109869359A (en) | 2017-12-02 | 2017-12-02 | Steam jet ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109869359A true CN109869359A (en) | 2019-06-11 |
Family
ID=66916852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285527.3A Pending CN109869359A (en) | 2017-12-02 | 2017-12-02 | Steam jet ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109869359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374741A (en) * | 2021-06-11 | 2021-09-10 | 郭孝国 | Radial jet injection device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565900A (en) * | 1991-09-06 | 1993-03-19 | Toshiba Corp | Steam injector |
| CN2499130Y (en) * | 2001-09-13 | 2002-07-10 | 四川省科学城高达测控公司 | Adjustable steam spray device |
| CN2697567Y (en) * | 2004-02-17 | 2005-05-04 | 曹振岭 | Vapour injection adjustable instant heat exchanger |
| CN101225836A (en) * | 2007-01-15 | 2008-07-23 | 财团法人工业技术研究院 | Injection vacuum device |
| CN101412011A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Adjustable spraying apparatus |
| CN101829639A (en) * | 2010-05-28 | 2010-09-15 | 杜战奇 | Injector with adjustable distance between nozzle and mixing chamber inlet and adjustable nozzle critical sectional area |
| CN201916260U (en) * | 2011-01-26 | 2011-08-03 | 双良节能系统股份有限公司 | Steam ejector with adjustable nozzle |
| CN204710603U (en) * | 2015-07-10 | 2015-10-21 | 泽普林固体物料技术(北京)有限公司 | Adjustable pitch injector |
| CN205461765U (en) * | 2016-03-09 | 2016-08-17 | 张宝源 | Reductant sprayer |
| CN207621090U (en) * | 2017-12-02 | 2018-07-17 | 哈尔滨工大金涛科技股份有限公司 | Steam jet ejector |
-
2017
- 2017-12-02 CN CN201711285527.3A patent/CN109869359A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565900A (en) * | 1991-09-06 | 1993-03-19 | Toshiba Corp | Steam injector |
| CN2499130Y (en) * | 2001-09-13 | 2002-07-10 | 四川省科学城高达测控公司 | Adjustable steam spray device |
| CN2697567Y (en) * | 2004-02-17 | 2005-05-04 | 曹振岭 | Vapour injection adjustable instant heat exchanger |
| CN101225836A (en) * | 2007-01-15 | 2008-07-23 | 财团法人工业技术研究院 | Injection vacuum device |
| CN101412011A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Adjustable spraying apparatus |
| CN101829639A (en) * | 2010-05-28 | 2010-09-15 | 杜战奇 | Injector with adjustable distance between nozzle and mixing chamber inlet and adjustable nozzle critical sectional area |
| CN201916260U (en) * | 2011-01-26 | 2011-08-03 | 双良节能系统股份有限公司 | Steam ejector with adjustable nozzle |
| CN204710603U (en) * | 2015-07-10 | 2015-10-21 | 泽普林固体物料技术(北京)有限公司 | Adjustable pitch injector |
| CN205461765U (en) * | 2016-03-09 | 2016-08-17 | 张宝源 | Reductant sprayer |
| CN207621090U (en) * | 2017-12-02 | 2018-07-17 | 哈尔滨工大金涛科技股份有限公司 | Steam jet ejector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374741A (en) * | 2021-06-11 | 2021-09-10 | 郭孝国 | Radial jet injection device |
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