CN205225891U - Vacuum ejector with adjustable nozzle - Google Patents
Vacuum ejector with adjustable nozzle Download PDFInfo
- Publication number
- CN205225891U CN205225891U CN201520677532.9U CN201520677532U CN205225891U CN 205225891 U CN205225891 U CN 205225891U CN 201520677532 U CN201520677532 U CN 201520677532U CN 205225891 U CN205225891 U CN 205225891U
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- nozzle
- injector nozzle
- mixing chamber
- order
- level
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Abstract
The utility model provides a vacuum ejector with adjustable nozzle for nuclear power station vacuum pumping system, a serial communication port, include: a main bod. The main part is equipped with the hybrid chamber, first order sprayer nozzle, the movably installation of first order sprayer nozzle in the main part, first order sprayer nozzle is equipped with first order sprayer driving gas entry, first order sprayer driving gas entry with the hybrid chamber intercommunication, second level sprayer nozzle, the movably installation of second level sprayer nozzle in the main part, second level sprayer nozzle is equipped with second level sprayer driving gas entry, second level sprayer driving gas entry with the hybrid chamber intercommunication, the ejection fluid entry, the sprayer export. Accord with the utility model discloses a vacuum ejector with adjustable nozzle, the evacuation stage homoenergetics different at the nuclear power station reach the best evacuation performance, shorten the pumpdown time, improve the economic nature of nuclear power station operation.
Description
Technical field
The utility model relates to nuclear power station pumped vacuum systems, particularly a kind of vacuum ejector with adjustable nozzle for nuclear power station pumped vacuum systems.
Background technique
CAP1000 and CAP1400 nuclear power plant reactor coolant system starts employing vacuum water-filling mode, the air being gathered in steam generator heat-transfer pipe top utilizing which can discharge traditional approach not easily to drive out of, reduces the possibility of reactor coolant pump cavitation erosion.
In the design of CAP1000 and CAP1400 nuclear power station, clear and definite requirement is proposed to pumped vacuum systems, namely the pressure of reactor coolant loop can be evacuated to 0.01MPa (a) from 0.1MPa (a) in 2 hours.For realizing this target, pumped vacuum systems have employed 2 grades of spargers and associated components.In vacuum, pressurized air (propellant) enters sparger, forms vacuum by step-down speedup in mixing chamber, with air in injection reactor coolant loop, vacuumizes in reactor coolant loop.In vacuum, along with degree of vacuum in reactor coolant loop rises, sparger vacuumizes performance and can be affected, and cannot realize sparger in whole vacuum and all remain best and vacuumize performance.
Therefore, how the performance that vacuumizes of vacuum ejector becomes problem demanding prompt solution.
Model utility content
The utility model, for the deficiencies in the prior art, proposes a kind of vacuum ejector with adjustable nozzle for nuclear power station pumped vacuum systems.
The utility model provides a kind of vacuum ejector with adjustable nozzle for nuclear power station pumped vacuum systems, it is characterized in that, comprising:
Main body; Described main body is provided with mixing chamber;
First order injector nozzle; Described first order injector nozzle is installed on the body movably; Described first order injector nozzle is provided with first order sparger propellant entrance; Described first order sparger propellant entrance is communicated with described mixing chamber;
Second level injector nozzle; Described second level injector nozzle is installed on the body movably; Described second level injector nozzle is provided with second level sparger propellant entrance; Described second level sparger propellant entrance is communicated with described mixing chamber;
Driving fluid entrance; Described driving fluid entrance is arranged on the body, is communicated with described mixing chamber;
Sparger exports; Described sparger outlet is arranged on the body, is communicated with described mixing chamber.
Preferably, described mixing chamber is inserted in one end of described first order injector nozzle; The outer surface of described first order injector nozzle is provided with the first outside thread; The internal surface of described mixing chamber is provided with the first internal thread; Described first internal thread and described first outside thread screw-thread fit, make described first order injector nozzle install movably on the body; Rotate described first injector nozzle, described first injector nozzle can be regulated to insert length scale in described mixing chamber.
Preferably, described mixing chamber is inserted in one end of described second level injector nozzle; The outer surface of described second level injector nozzle is provided with the second outside thread; The internal surface of described mixing chamber is provided with the second internal thread; Described second internal thread and described second outside thread screw-thread fit, make described second level injector nozzle install movably on the body; Rotate described second injector nozzle, described second injector nozzle can be regulated to insert length scale in described mixing chamber.
Preferably, described driving fluid ingress is provided with the first flange.
Preferably, described sparger outlet port is provided with the second flange.
Preferably, one end that described driving fluid entrance and described first injector nozzle insert in described mixing chamber is oppositely arranged.
Preferably, one end that described sparger outlet and described second injector nozzle insert in described mixing chamber is oppositely arranged.
Compared with prior art, the utility model has following beneficial effect:
1, nozzle is arranged in main body movably, the position of nozzle in main body is regulated by moving nozzle, thus regulate the length scale in nozzle insertion mixing chamber, make it all can reach best in the vacuumizing phase that nuclear power station is different and vacuumize performance, shorten the pumpdown time, improve nuclear power station performance driving economy.
2, nozzle is connected with outside thread matching thread by internal thread with main body, and to realize the movement of nozzle in main body, to regulate the length scale in nozzle insertion mixing chamber, structure is simple, easy to adjust.
3, adopt first order injector nozzle to be communicated with mixing chamber with second level injector nozzle, series connection coordinates simultaneously, improves sparger vacuum performance.
4, one end that driving fluid entrance and the first injector nozzle insert in mixing chamber is oppositely arranged, and makes the first injector nozzle after driving fluid enters mixing chamber, carry out first time and sprays power-assisted.One end that sparger outlet and the second injector nozzle insert in mixing chamber is oppositely arranged, and makes the second injector nozzle carry out second time again before introducing fluid flows out mixing chamber and sprays power-assisted.Spray power-assisted, greatly can improve the vacuum performance of sparger for twice of two nozzles.
5, driving fluid entrance and sparger outlet configure the first flange and the second flange respectively, are convenient to be connected with pipeline.
6, meeting the vacuum ejector with adjustable nozzle for nuclear power station pumped vacuum systems of the utility model preferred embodiment, except being applicable to nuclear power station pumped vacuum systems, can also other field be applicable to.
Accompanying drawing explanation
Fig. 1 is the schematic diagram with the vacuum ejector of adjustable nozzle for nuclear power station pumped vacuum systems meeting the utility model preferred embodiment.
The A-A sectional view that Fig. 2 is structure shown in Fig. 1.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail the utility model below in conjunction with the drawings and specific embodiments.
As illustrated in fig. 1 and 2, for the vacuum ejector with adjustable nozzle of nuclear power station pumped vacuum systems, comprising:
Main body 1, main body 1 is provided with mixing chamber 11.
First order injector nozzle 2, first order injector nozzle 2 is installed on the body 1 movably.First order injector nozzle 2 is provided with first order sparger propellant entrance 21, and first order sparger propellant entrance 21 is communicated with mixing chamber 11.
Second level injector nozzle 3, second level injector nozzle 3 is installed on the body 1 movably.Second level injector nozzle 3 is provided with second level sparger propellant entrance 31, and second level sparger propellant entrance 31 is communicated with mixing chamber 11.
Driving fluid entrance 4.Driving fluid entrance 4 arranges on the body 1, is communicated with mixing chamber 11.
Sparger outlet 5.Sparger outlet 5 is arranged on the body 1, is communicated with mixing chamber 11.
Preferably, mixing chamber 11 is inserted in one end of first order injector nozzle 2.The outer surface of first order injector nozzle 2 is provided with the first outside thread, and the internal surface of mixing chamber 11 is provided with the first internal thread, and the first internal thread and the first outside thread 6 place's screw-thread fit in fig. 2, make first order injector nozzle 2 install movably on the body 1.Rotate the first injector nozzle 2, the first injector nozzle 2 can be regulated to insert the size of the length H1 in mixing chamber 11.
Preferably, mixing chamber 11 is inserted in one end of second level injector nozzle 3.The outer surface of second level injector nozzle 3 is provided with the second outside thread, and the internal surface of mixing chamber 11 is provided with the second internal thread, and the second internal thread and the second outside thread 7 place's screw-thread fit in fig. 2, make second level injector nozzle 3 install movably on the body 1.Rotate the second injector nozzle 3, the second injector nozzle 3 can be regulated to insert the size of the length H2 in mixing chamber 11.
Preferably, driving fluid entrance 4 place is provided with the first flange 8.
Preferably, sparger exports 5 places and is provided with the second flange 9.
Preferably, one end that driving fluid entrance 4 and the first injector nozzle 2 insert in mixing chamber 11 is oppositely arranged.
Preferably, one end that sparger outlet 5 and the second injector nozzle 3 insert in mixing chamber 11 is oppositely arranged.
Compared with prior art, the utility model has following beneficial effect:
1, nozzle is arranged in main body movably, the position of nozzle in main body is regulated by moving nozzle, thus regulate the length scale in nozzle insertion mixing chamber, make it all can reach best in the vacuumizing phase that nuclear power station is different and vacuumize performance, shorten the pumpdown time, improve nuclear power station performance driving economy.
2, nozzle is connected with outside thread matching thread by internal thread with main body, and to realize the movement of nozzle in main body, to regulate the length scale in nozzle insertion mixing chamber, structure is simple, easy to adjust.
3, adopt first order injector nozzle to be communicated with mixing chamber with second level injector nozzle, series connection coordinates simultaneously, improves sparger vacuum performance.
4, one end that driving fluid entrance and the first injector nozzle insert in mixing chamber is oppositely arranged, and makes the first injector nozzle after driving fluid enters mixing chamber, carry out first time and sprays power-assisted.One end that sparger outlet and the second injector nozzle insert in mixing chamber is oppositely arranged, and makes the second injector nozzle carry out second time again before introducing fluid flows out mixing chamber and sprays power-assisted.Spray power-assisted, greatly can improve the vacuum performance of sparger for twice of two nozzles.
5, driving fluid entrance and sparger outlet configure the first flange and the second flange respectively, are convenient to be connected with pipeline.
6, meeting the vacuum ejector with adjustable nozzle for nuclear power station pumped vacuum systems of the utility model preferred embodiment, except being applicable to nuclear power station pumped vacuum systems, can also other field be applicable to.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Those skilled in the art can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present utility model.
Obviously, those skilled in the art can carry out various change and modification to model utility and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (8)
1. there is a vacuum ejector for adjustable nozzle, it is characterized in that, comprising:
Main body; Described main body is provided with mixing chamber;
First order injector nozzle; Described first order injector nozzle is installed on the body movably; Described first order injector nozzle is provided with first order sparger propellant entrance; Described first order sparger propellant entrance is communicated with described mixing chamber;
Second level injector nozzle; Described second level injector nozzle is installed on the body movably; Described second level injector nozzle is provided with second level sparger propellant entrance; Described second level sparger propellant entrance is communicated with described mixing chamber;
Driving fluid entrance; Described driving fluid entrance is arranged on the body, is communicated with described mixing chamber;
Sparger exports; Described sparger outlet is arranged on the body, is communicated with described mixing chamber.
2. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, described mixing chamber is inserted in one end of described first order injector nozzle; The outer surface of described first order injector nozzle is provided with the first outside thread; The internal surface of described mixing chamber is provided with the first internal thread; Described first internal thread and described first outside thread screw-thread fit, make described first order injector nozzle install movably on the body; Rotate described first order injector nozzle, described first order injector nozzle can be regulated to insert length scale in described mixing chamber.
3. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, described mixing chamber is inserted in one end of described second level injector nozzle; The outer surface of described second level injector nozzle is provided with the second outside thread; The internal surface of described mixing chamber is provided with the second internal thread; Described second internal thread and described second outside thread screw-thread fit, make described second level injector nozzle install movably on the body; Rotate described second level injector nozzle, described second level injector nozzle can be regulated to insert length scale in described mixing chamber.
4. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, described driving fluid ingress is provided with the first flange.
5. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, described sparger outlet port is provided with the second flange.
6. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, one end that described driving fluid entrance and described first order injector nozzle insert in described mixing chamber is oppositely arranged.
7. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, one end that described sparger outlet and described second level injector nozzle insert in described mixing chamber is oppositely arranged.
8. have the vacuum ejector of adjustable nozzle as claimed in claim 1, it is characterized in that, described vacuum ejector is used for nuclear power station pumped vacuum systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520677532.9U CN205225891U (en) | 2015-09-02 | 2015-09-02 | Vacuum ejector with adjustable nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520677532.9U CN205225891U (en) | 2015-09-02 | 2015-09-02 | Vacuum ejector with adjustable nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225891U true CN205225891U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520677532.9U Expired - Fee Related CN205225891U (en) | 2015-09-02 | 2015-09-02 | Vacuum ejector with adjustable nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225891U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114367A (en) * | 2015-09-02 | 2015-12-02 | 上海核工程研究设计院 | Vacuum injector provided with adjustable nozzles and used for nuclear power station vacuum-pumping system |
| 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 |
-
2015
- 2015-09-02 CN CN201520677532.9U patent/CN205225891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114367A (en) * | 2015-09-02 | 2015-12-02 | 上海核工程研究设计院 | Vacuum injector provided with adjustable nozzles and used for nuclear power station vacuum-pumping system |
| 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 |
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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: 20160511 Termination date: 20160902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |