CN105788677A - Spray nozzle for spray cooling of spent fuel pool of nuclear power plant - Google Patents
Spray nozzle for spray cooling of spent fuel pool of nuclear power plant Download PDFInfo
- Publication number
- CN105788677A CN105788677A CN201610297404.0A CN201610297404A CN105788677A CN 105788677 A CN105788677 A CN 105788677A CN 201610297404 A CN201610297404 A CN 201610297404A CN 105788677 A CN105788677 A CN 105788677A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- nuclear power
- spray
- power station
- spraying cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Nozzles (AREA)
Abstract
The invention provides a spray nozzle for spray cooling of a spent fuel pool of a nuclear power plant. The spray nozzle comprises a spray nozzle body and a nozzle orifice body, wherein the spray nozzle body and the nozzle orifice body are connected through threads so as to form a liquid inlet, a swirl chamber and a nozzle orifice, and the liquid inlet is tangential to the swirl chamber; one end of the nozzle orifice body is of a cone. According to the spray nozzle for the spray cooling of the spent fuel pool of the nuclear power plant, provided by the invention, the technical performance indexes, i.e., spraying swath and flux density for the spray cooling of the spent fuel pool are achieved through optimizing geometrical characteristic coefficients.
Description
Technical field
The present invention relates to a kind of nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling.
Background technology
Under the extreme accident conditions of nuclear power station, spentnuclear fuel pond spray system can be used for the cooling of irradiated fuel assembly when pond surprisingly empties.Nozzle is as the most critical parts of this system, and its performance directly influences area coverage and these two important indicators of flux density of spray system.For ensure irradiated fuel assembly sufficiently cool, for Nuclear Power Station's Exhausted Fuels pond spray nozzle under specific spray height, pressure and setting angle, should be able to meet claimed below: spraying swath reaches the width in spentnuclear fuel pond；The flux density of key area disclosure satisfy that the evaporated water taken away needed for decay heat.
It is reported, domestic disclosed nozzle is used for the fields such as chemical industry, desalinization, boiler combustion, plant protection at present, they are more concerned with the technology such as the atomizing effect of nozzle, uniform cloth liquid, separating property, it is impossible to well meet the requirement of spentnuclear fuel pond spraying cooling；And the overall centrifugal structure form nozzle of routine is cast member, processing technique is complicated, and geometric properties coefficient is definite value, for meeting the requirement of Nuclear Power Station's Exhausted Fuels pond spray system spraying swath and flow distribution, needing polytype nozzle to combine realization, pipe-line system complex distribution, cost is high.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed to a kind of nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling.
Nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling adopts split centrifugal structure form, including nozzle body and spout body；Described nozzle body and spout body form inlet, minor air cell and spout by thread connection, and described inlet is tangent with described minor air cell；Described spout body one end is cone.
Preferably, the radius R of described inlet, eccentric throw A, spray orifice radius r are configured and form different geometric properties coefficient (A × r × sin β)/R by different combinations2。
Preferably, the geometric properties coefficient value of described spout body is 0.8～2.1.
Preferably, the ratio of the vent length L and radius r of described spout body is 1～2.
Preferably, the conicity angles alpha of described spout body is 30 °.
Compared with prior art, the method have the advantages that
1, the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling provided by the invention, liquid enters in nozzle under the effect of the pressure, eccentric throw in nozzle is utilized to make liquid in rotation, accelerate to spray hollow diffusion taper liquid film in spout convergent passage, there is high speed difference in liquid and outside air, mutual collision rift is broken, atomization.
2, the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling provided by the invention, by optimizing geometric properties coefficient, has reached the technical performance index of spentnuclear fuel pond spraying cooling spraying swath and flux density.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling meeting the preferred embodiment of the present invention.
Fig. 2 is the schematic top plan view of the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling meeting the preferred embodiment of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1-2, the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling adopts split centrifugal structure form, including nozzle body 1 and spout body 2；Described nozzle body 1 and spout body 2 form inlet 3, minor air cell 4 and spout 5 by thread connection, and described inlet 3 is tangent with described minor air cell 4；Described spout body 2 one end is cone.Liquid enters nozzle chamber 1 from inlet 3, sprays from spout 5 after minor air cell 4 is fully rotatable.The parameters such as the inlet radius R of nozzle, eccentric throw A, spray orifice radius r are to affect the major parameter of nozzle performance, and the geometric properties coefficient of its formation directly affects the size of spraying swath and the distribution character of flow.
Preferably, the radius R of described inlet 3, eccentric throw A, spray orifice radius r are configured and form different geometric properties coefficient (A × r × sin β)/R by different combinations2, meet the requirement of Nuclear Power Station's Exhausted Fuels pond spraying cooling nozzle spraying swath and flow distribution.
Preferably, the geometric properties coefficient value of described spout body 2 is 0.8～2.1.
Preferably, the ratio of the vent length L and radius r of described spout body 2 is 1～2.
Preferably, the conicity angles alpha of described spout body 2 is 30 °.
The pressure potential of fluid transfers speed kinetic energy to, liquid becomes taper liquid film at nozzle exit, when geometric properties coefficient value is 0.8～2.1, the ratio of vent length L and radius r is 1～2, when the conicity angles alpha of spout body is 30 °, test shows that exit velocity can make liquid reach enough spraying swaths, and the drop that liquid film is formed with air collision rift lands in coverage.
Compared with prior art, the present embodiment has the advantages that
1, the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling that the present embodiment provides, liquid enters in nozzle under the effect of the pressure, eccentric throw in nozzle is utilized to make liquid in rotation, accelerate to spray hollow diffusion taper liquid film in spout convergent passage, there is high speed difference in liquid and outside air, mutual collision rift is broken, atomization.
2, the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling that the present embodiment provides, by optimizing geometric properties coefficient, has reached the technical performance index of spentnuclear fuel pond spraying cooling spraying swath and flux density.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so what describe is fairly simple, relevant part illustrates referring to method part.
Those skilled in the art specifically can should be used for using different methods to realize described function to each, but this realization is it is not considered that beyond the scope of this invention.
Obviously, invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to include these change and modification.
Claims (5)
1. the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling, it is characterised in that include nozzle body and spout body；Described nozzle body and spout body form inlet, minor air cell and spout by thread connection, and described inlet is tangent with described minor air cell；Described spout body one end is cone.
2. the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling as claimed in claim 1, it is characterized in that, the radius R of described inlet, eccentric throw A, spray orifice radius r are configured and form different geometric properties coefficient (A × r × sin β)/R by different combinations2。
3. the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling as claimed in claim 2, it is characterised in that the geometric properties coefficient value of described spout body is 0.8～2.1.
4. the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling as claimed in claim 1, it is characterised in that the ratio of the vent length L and radius r of described spout body is 1～2.
5. the nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling as claimed in claim 1, it is characterised in that the conicity angles alpha of described spout body is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297404.0A CN105788677A (en) | 2016-05-06 | 2016-05-06 | Spray nozzle for spray cooling of spent fuel pool of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297404.0A CN105788677A (en) | 2016-05-06 | 2016-05-06 | Spray nozzle for spray cooling of spent fuel pool of nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105788677A true CN105788677A (en) | 2016-07-20 |
Family
ID=56402066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610297404.0A Pending CN105788677A (en) | 2016-05-06 | 2016-05-06 | Spray nozzle for spray cooling of spent fuel pool of nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309107A (en) * | 2017-07-12 | 2017-11-03 | 昆明理工大学 | Dynamic pressure cyclone showerhead is used in a kind of liquid sprinkling |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB337070A (en) * | 1929-07-30 | 1930-10-30 | Barton Haxall Coffey | Improvements in spray nozzles |
| EP0217744A1 (en) * | 1985-09-02 | 1987-04-08 | George Edgar Callahan | Spray device for a compressible container |
| CN2172680Y (en) * | 1993-10-25 | 1994-07-27 | 上海核工程研究设计院 | Sprayer |
| JP2001025686A (en) * | 1999-07-12 | 2001-01-30 | Ishikawajima Harima Heavy Ind Co Ltd | Spray nozzle |
| CN201132142Y (en) * | 2007-11-13 | 2008-10-15 | 宁波方力集团有限公司 | spray nozzle |
| CN201304372Y (en) * | 2008-09-27 | 2009-09-09 | 夏洪辉 | Distributed dynamically variable spray head |
| CN103871507A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant pressurizer spraying apparatus |
| CN205722810U (en) * | 2016-05-06 | 2016-11-23 | 上海核工程研究设计院 | A kind of nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling |
-
2016
- 2016-05-06 CN CN201610297404.0A patent/CN105788677A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB337070A (en) * | 1929-07-30 | 1930-10-30 | Barton Haxall Coffey | Improvements in spray nozzles |
| EP0217744A1 (en) * | 1985-09-02 | 1987-04-08 | George Edgar Callahan | Spray device for a compressible container |
| CN2172680Y (en) * | 1993-10-25 | 1994-07-27 | 上海核工程研究设计院 | Sprayer |
| JP2001025686A (en) * | 1999-07-12 | 2001-01-30 | Ishikawajima Harima Heavy Ind Co Ltd | Spray nozzle |
| CN201132142Y (en) * | 2007-11-13 | 2008-10-15 | 宁波方力集团有限公司 | spray nozzle |
| CN201304372Y (en) * | 2008-09-27 | 2009-09-09 | 夏洪辉 | Distributed dynamically variable spray head |
| CN103871507A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant pressurizer spraying apparatus |
| CN205722810U (en) * | 2016-05-06 | 2016-11-23 | 上海核工程研究设计院 | A kind of nozzle for Nuclear Power Station's Exhausted Fuels pond spraying cooling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309107A (en) * | 2017-07-12 | 2017-11-03 | 昆明理工大学 | Dynamic pressure cyclone showerhead is used in a kind of liquid sprinkling |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20160720 |