CN206290500U - A kind of air ejector based on helical runner injection - Google Patents
A kind of air ejector based on helical runner injection Download PDFInfo
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- CN206290500U CN206290500U CN201621139341.8U CN201621139341U CN206290500U CN 206290500 U CN206290500 U CN 206290500U CN 201621139341 U CN201621139341 U CN 201621139341U CN 206290500 U CN206290500 U CN 206290500U
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- air
- surrounding air
- helical runner
- suction chamber
- surrounding
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Abstract
The utility model provides a kind of air ejector based on helical runner injection, and it includes：Compressed air inlet, surrounding air passage, surrounding air suction inlet, suction chamber, nozzle, mixing diffuser and outlet；The suction chamber is connected with the surrounding air suction inlet, and surrounding air enters the suction chamber from the surrounding air suction inlet；The surrounding air passage is located between the surrounding air suction inlet and the suction chamber；The mixing diffuser is located between the suction chamber and the outlet.The air ejector based on helical runner injection that the utility model is provided includes, using helical runner structure, the return air quantity of raising induction, while providing enough outlet pressures in injector outlet.
Description
Technical field
The utility model is related to the passive emergent technical field that can reside of nuclear power plant master control room, and in particular to a kind of master control
The air ejector based on helical runner injection that room processed uses when accident occurs.
Background technology
During nuclear power plant accident, main control room can reside region as nuclear power station control centre and unique personnel, play guarantor
The effect that shield personal security and maintenance control device normally run.For main control room personnel can reside, it is necessary to right after guarantee accident
Main control room inner air is circulated filtering, to reduce influence of the radioactivity to personnel.After nuclear power plant accident, sprayed using air
Emitter realizes the passive circulation of main control room inner air, and air ejector provides power, induced environment using compressed air
Air mix with compressed air into injector, mixed gas by injector export send out.Air ejector is induced
The ratio of surrounding air amount and air supply be referred to as the jet coefficient of injector.
Due to needing influence of the radioactivity to personnel in main control room after reduction accident, it is desirable to provide enough inner loops
The jet coefficient for filtering air quantity, i.e. air ejector needs to reach particular requirement, meanwhile, air ejector outlet needs to provide foot
Enough pressure overcomes downstream resistance.
Utility model content
The utility model in view of the shortcomings of the prior art, proposes a kind of air ejector based on helical runner injection.
Air ejector based on helical runner injection includes：Compressed air inlet, surrounding air passage, surrounding air are inhaled
Entrance, suction chamber, nozzle, mixing diffuser and outlet；The suction chamber is connected with the surrounding air suction inlet, and environment is empty
Gas enters the suction chamber from the surrounding air suction inlet；The surrounding air passage be located at the surrounding air suction inlet with
Between the suction chamber；The mixing diffuser is located between the suction chamber and the outlet.
Preferably, the compressed air inlet is form of flanges.
Preferably, the surrounding air suction inlet is form of flanges.
Preferably, the outlet is form of flanges.
Preferably, the nozzle is located in the suction chamber, is configured to eject compressed air.
Preferably, the surrounding air passage is helical runner structure.
Preferably, the surrounding air passage includes blade and axostylus axostyle.
Compared with prior art, the utility model has the advantages that：
1st, the air ejector based on helical runner injection that the utility model is provided, using helical runner structure, improves
The return air quantity of induction, while providing enough outlet pressures in injector outlet.
2nd, the air ejector based on helical runner injection that the utility model is provided, enters using by compressed air inlet
The compressed air for entering, projects to form negative pressure at nozzle, and induced environment air enters suction chamber by surrounding air suction inlet.Into
After the surrounding air and the blended diffuser of compressed air of suction chamber, injector is sent out by exporting.The circulation air of induction is led to
Cross after surrounding air suction inlet and enter the surrounding air passage of helical runner structure, with spiral side when by helical runner structure
Formula is advanced, into suction chamber.Compressed air mixes with surrounding air in diffuser is mixed, and forms the axial direction of many large scales
Whirlpool, while carrying out energy and momentum-exchange.While the surrounding air passage of helical runner structure makes induction enough air circulation,
Injector outlet can provide enough pressure.
Brief description of the drawings
The schematic diagram of the air ejector based on helical runner injection that Fig. 1 is provided for the utility model.
Wherein：1st, compressed air inlet；2nd, suction chamber；3rd, nozzle；4th, surrounding air suction inlet；5th, diffuser is mixed；6、
Outlet；7th, surrounding air passage.
Specific embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body implementation method is described in further detail to the utility model.
As shown in figure 1, a kind of air ejector based on helical runner injection, including compressed air inlet 1, suction chamber 2,
Nozzle 3, surrounding air suction inlet 4, mixing diffuser 5, outlet 6 and surrounding air passage 7.
Described compressed air inlet 1 is used for the entrance of compressed air, is form of flanges.
The surrounding air that described suction chamber 2 is used to suck temporarily is stored.
Described nozzle 3 is projected for compressed air, and compressed air and the surrounding air in suction chamber 2 of injection enter jointly
Enter to mix diffuser 5.
Described surrounding air suction inlet 4 is used for the entrance of surrounding air, is form of flanges.
Described mixing diffuser 5 is for the mixed of the surrounding air from the compressed air and suction chamber 2 that nozzle 3 is projected
Close, spread, so as to form the flow field of stabilization.
Described outlet 6 is used for the submitting of gas after mixing, is form of flanges.
Described surrounding air passage 7 is located between surrounding air suction inlet 4 and suction chamber 2, is helical runner structure.Lure
The circulation air led by entering the surrounding air passage 7 of helical runner structure after surrounding air suction inlet 4, by helical-blade
Advance in a spiral manner during wheel construction, into suction chamber 2.
The specifically used process of a kind of air ejector based on helical runner injection described in the present embodiment is：Compressed air
Compressed air intake 1 enters, and is projected through nozzle 5, forms negative pressure.Surrounding air is sucked using the negative pressure for being formed through surrounding air
Mouthfuls 4 enter suction chambers 2, and the surrounding air into suction chamber 2 mixes with the blended diffuser 5 of the compressed air that nozzle 3 is projected, expands
Dissipate, formed stabilization flow field, and after through outlet 6 send out.The circulation air of induction is by entering spiral after surrounding air suction inlet 4
The surrounding air passage 7 of blade wheel structure, is advanced in a spiral manner when by helical runner structure, into suction chamber 2.
A kind of air ejector based on helical runner injection described in the present embodiment, the circulation air of its induction passes through ring
Into the surrounding air passage 7 of helical runner structure after border air suction inlet 4, when by helical runner structure in a spiral manner
Advance, into suction chamber 2.Compressed air 5 mixing in diffuser is mixed with surrounding air, forms the axial direction of many large scales
Whirlpool, while carrying out energy and momentum-exchange.While the surrounding air passage of helical runner structure makes induction enough air circulation,
Injector outlet can provide enough pressure.
Compared with prior art, the present embodiment has the advantages that：
1st, the present embodiment provide the air ejector based on helical runner injection include, using helical runner structure, carry
The return air quantity of height induction, while providing enough outlet pressures in injector outlet.
2nd, the present embodiment provide the air ejector based on helical runner injection include, using by compressed air inlet
The compressed air of entrance, projects to form negative pressure at nozzle, and induced environment air enters suction chamber by surrounding air suction inlet.Enter
After entering the surrounding air and the blended diffuser of compressed air of suction chamber, injector is sent out by exporting.The circulation air of induction
By the surrounding air passage after surrounding air suction inlet into helical runner structure, with spiral when by helical runner structure
Mode is advanced, into suction chamber.Compressed air mixes with surrounding air in diffuser is mixed, and forms the axial direction of many large scales
Whirlpool, while carrying out energy and momentum-exchange.While the surrounding air passage of helical runner structure makes induction enough air circulation,
Injector outlet can provide enough pressure.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, due to corresponding to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Those skilled in the art can realize described function to each specific application using distinct methods, but
It is this realization it is not considered that beyond scope of the present utility model.
Obviously, those skilled in the art can carry out various changes to utility model and modification is new without deviating from this practicality
The spirit and scope of type.So, if it is of the present utility model these modification and modification belong to the utility model claim and its
Within the scope of equivalent technologies, then the utility model is also intended to including including these changes and modification.
Claims (7)
1. a kind of air ejector based on helical runner injection, it is characterised in that including：Compressed air inlet, surrounding air
Passage, surrounding air suction inlet, suction chamber, nozzle, mixing diffuser and outlet；The suction chamber is inhaled with the surrounding air
Entrance is connected, and surrounding air enters the suction chamber from the surrounding air suction inlet；The surrounding air passage is located at described
Between surrounding air suction inlet and the suction chamber；The mixing diffuser is located between the suction chamber and the outlet.
2. the air ejector based on helical runner injection according to claim 1, it is characterised in that the compressed air
Entrance is form of flanges.
3. the air ejector based on helical runner injection according to claim 1, it is characterised in that the surrounding air
Suction inlet is form of flanges.
4. the air ejector based on helical runner injection according to claim 1, it is characterised in that the outlet is method
Blue form.
5. the air ejector based on helical runner injection according to claim 1, it is characterised in that the nozzle is located at
In the suction chamber, it is configured to eject compressed air.
6. the air ejector based on helical runner injection according to claim 1, it is characterised in that the surrounding air
Passage is helical runner structure.
7. the air ejector based on helical runner injection according to claim 1 or 6, it is characterised in that the environment
Air duct includes blade and axostylus axostyle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621139341.8U CN206290500U (en) | 2016-10-19 | 2016-10-19 | A kind of air ejector based on helical runner injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621139341.8U CN206290500U (en) | 2016-10-19 | 2016-10-19 | A kind of air ejector based on helical runner injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206290500U true CN206290500U (en) | 2017-06-30 |
Family
ID=59095546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621139341.8U Active CN206290500U (en) | 2016-10-19 | 2016-10-19 | A kind of air ejector based on helical runner injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206290500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593964A (en) * | 2016-10-19 | 2017-04-26 | 上海核工程研究设计院 | Air ejector based on screw impeller injection |
| CN113202825A (en) * | 2021-04-25 | 2021-08-03 | 连云港正航电力节能技术有限公司 | Steam jet air extractor |
-
2016
- 2016-10-19 CN CN201621139341.8U patent/CN206290500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593964A (en) * | 2016-10-19 | 2017-04-26 | 上海核工程研究设计院 | Air ejector based on screw impeller injection |
| CN113202825A (en) * | 2021-04-25 | 2021-08-03 | 连云港正航电力节能技术有限公司 | Steam jet air extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Patentee after: XUANDA INDUSTRIAL GROUP Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Patentee before: XUANDA INDUSTRIAL GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |