CN208390026U - A kind of nozzle during dry process UO2 powder technology - Google Patents
A kind of nozzle during dry process UO2 powder technology Download PDFInfo
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- CN208390026U CN208390026U CN201721834773.5U CN201721834773U CN208390026U CN 208390026 U CN208390026 U CN 208390026U CN 201721834773 U CN201721834773 U CN 201721834773U CN 208390026 U CN208390026 U CN 208390026U
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- inner tube
- outer tube
- conical surface
- dry process
- powder technology
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- 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
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Abstract
The utility model belongs to chemical field, specific dry process UO2Nozzle during powder technology is equipped with gap, is equipped with spiral guide vane in gap, spiral guide vane is fixed with inner tube including coaxial outer tube and inner tube between the inner and outer tubes；Outer tube end and inner pipe end are equipped with pyramidal structure, outer tube end pyramidal structure forms nozzle, the pyramidal structure of inner pipe end stretches out the nozzle, since the spiral guide vane structure designed between inner and outer pipes greatly improves the mixability of reaction gas using the principle of helical feed, to improve the uniformity coefficient of reaction, spray head can be effectively prevent to block, can be improved the quality of intermediate product uranyl fluoride, to make the UO of production2Powder, epigranular, fully reacting, impurity are few, can significantly improve the yield rate of subsequent clamp dog link.
Description
Technical field
The utility model belongs to chemical field, and in particular to a kind of dry process UO2The nozzle of powder.
Background technique
With the rapid development of nuclear energy in world wide, UO2The demand of nuclear fuel is increasing.UO2With good physics
Property and chemical property, such as fusing point is high, irradiation stability is good, burnup is deep, thermal expansion coefficient is small etc., and it is easily processed into one
Setting shape, element post-processing are easier to.Currently, UO2It is widely used in presurized water reactor, boiling-water reactor, heavy water reactor and air cooled reactor.At present
UO2Mainly by dry production, uranyl fluoride first is prepared using UF6 hydrolysis, then defluorinate is reduced to UO2.Dry way process has
The advantages that process is short, output is big, easy serialization, automation, few waste liquid.UO2There is inheritance to the property of uranyl fluoride,
It must be strictly controlled reaction condition, the physical property of uranyl fluoride made to meet preparation ceramics UO2The requirement of powder.UF6Hydrolysis is to put
Thermal response reduces reaction temperature, is conducive to the progress of reaction, but the uranyl fluoride mobility generated is bad, wall easy to stick, but has
This uranyl fluoride restores UO obtained through defluorinate2Powder has lower apparent density and higher specific surface, is conducive to UO2
Development and sintering.Reaction temperature is improved, the progress of reaction is unfavorable for, the uranyl fluoride generated with this condition easily flows, no
Viscous wall, but due to temperature height, so as to cause UO2Powder activity decline.
Summary of the invention
The purpose of the utility model is to provide a kind of dry process UO2Nozzle during powder technology prepares UO2Powder
The case where reaction speed is very fast, can be avoided spray head blocking.
The technical solution of the utility model is as follows:
A kind of dry process UO2Nozzle during powder technology, including coaxial outer tube and inner tube, the inner tube and
It is equipped with gap between outer tube, is equipped with spiral guide vane in the gap, the spiral guide vane is fixed with inner tube；The outer tube
End and the inner pipe end are equipped with pyramidal structure, and outer tube end pyramidal structure forms nozzle, the inner pipe end
Pyramidal structure stretches out the nozzle.
The outer tube includes the outer tube cylinder being fixedly connected and outer tube conical surface spout, and the outer tube conical surface spout is formed
Nozzle.
The inner tube includes the inner tube cylinder and the inner tube conical surface being fixedly connected, and the spiral guide vane is fixed at inner tube
Cylinder is towards outside one end of the inner tube conical surface.
The inner tube conical surface end diameter is equal with outer tube conical surface spout small end interior diameter, and inner tube conical surface outside diameter
Less than outer tube conical surface spout big end interior diameter.
The outside diameter of the inner tube conical surface is identical as inner tube drum diameter, and the two is fixedly connected, the inner tube conical surface
Small end stretches out the small end of above-mentioned outer tube conical surface spout.
The outer tube cylinder is identical with the thickness of outer tube conical surface spout.
The length ratio of the outer tube cylinder and outer tube conical surface spout is 10:1~20:1.
The length of the inner tube conical surface is greater than the length of above-mentioned outer tube conical surface spout.
The spiral guide vane is made of piece helical blade, and the outer wall of inner tube cylinder is fixedly welded on the inside of each blade
On.
The length of blade accounts for the 1/5~2/5 of inner tube drum length, and the height of blade is the 2/5 of inner tube drum diameter
~3/5,90~105mm of screw pitch of blade, vane thickness are 0.2~0.6mm.
The beneficial effects of the utility model are as follows: due to the spiral guide vane structure designed between inner and outer pipes, utilizing spiral
The principle of conveying, greatly improves the mixability of reaction gas, to improve the uniformity coefficient of reaction, can effectively prevent spraying
Head blocking；
It can be improved the quality of intermediate product uranyl fluoride, to make the UO of production2Powder, epigranular, fully reacting,
Impurity is few, can significantly improve the yield rate of subsequent clamp dog link；
It is of simple structure and low cost, easy to use.
Detailed description of the invention
Fig. 1 is dry process UO2Nozzle schematic diagram during powder technology；
Fig. 2 is outer tube schematic diagram；
Fig. 3 is inner tube schematic diagram；
In figure: 1. outer tubes；2. outer tube cylinder；3. outer tube conical surface spout；4. inner tube cylinder；5. the inner tube conical surface；6. spiral is led
Leaf；7. blade；8. inner tube.
Specific embodiment
Below by the drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the nozzle is made of coaxial mounted inner tube 8 and outer tube 1, there is gap between the two, in inner tube 8
Spiral guide vane 6 is installed.
As shown in Fig. 2, outer tube 1 includes outer tube cylinder 2 and outer tube conical surface spout 3, two parts are fixedly connected.As shown in figure 3,
Inner tube 8 includes inner tube cylinder 4 and the inner tube conical surface 5, and two parts are fixedly connected, and in inner tube cylinder 4 towards the one of the inner tube conical surface 5
End installation spiral guide vane 6, and the inner tube conical surface 5 stretches out outer tube conical surface spout 3.
The length of outer tube cylinder 2 and the equal length of inner tube cylinder 4, and there are gaps for the two；Above-mentioned spiral guide vane 6
In the gap.
5 end diameter of the inner tube conical surface is equal with 3 small end interior diameter of outer tube conical surface spout, and 5 outside diameter of the inner tube conical surface is small
In 3 big end interior diameter of outer tube conical surface spout, therefore there is also gaps between the two.
The outside diameter of the inner tube conical surface 5 is identical as 4 diameter of inner tube cylinder, and the two is fixedly connected, the small end of the inner tube conical surface 5
Stretch out the small end of above-mentioned outer tube conical surface spout 3.
As shown in Fig. 2, outer tube cylinder 2 is identical with the thickness of outer tube conical surface spout 3, outer tube conical surface spout 3 is cone,
Big end and one end of outer tube cylinder 2 are welded and fixed, and the interior diameter of big end is equal with the interior diameter of outer tube cylinder 2.
The length ratio of the outer tube cylinder 2 and outer tube conical surface spout 3 is 10:1~20:1, preferably 15:1.
As shown in figure 3,4 end of inner tube processing taper becomes the inner tube conical surface 5, the length of the inner tube conical surface 5 is greater than above-mentioned outer
The length of pipe conical surface spout 3, so that 5 small end of the inner tube conical surface stretches out outer tube conical surface spout 3 when assembly.
The spiral guide vane 6 is made of 8 helical blades, and the inside of each blade 7 is fixedly welded on the outer of inner tube cylinder 4
On wall, length of blade accounts for the 1/5~2/5 of 4 length of inner tube cylinder, and the height of blade 7 is the 2/5~3/5 of 4 diameter of inner tube cylinder,
90~105mm of screw pitch of helical blade 7, preferably 100mm, with a thickness of 0.2~0.6mm, preferably 0.5mm.
It is preferred that 2 part internal diameter of outer tube cylinder is 23.8mm, outer diameter 30.12mm, length 150mm.
It is preferred that the length of outer tube conical surface spout 3 is 20mm, spout end (small end) outer diameter 20mm, internal diameter 10.7mm.
Preferred 4 length of said inner tube cylinder is 150mm, outer diameter 14.5mm, internal diameter 10.5mm.
Preferred said inner tube conical surface small end outer diameter is 6.7mm, internal diameter 5.5mm, length 30mm.
The preferred spiral guide vane is made of 8 helical blades.
The preferably described helical blade screw pitch is 100mm, length of blade 25mm, blade height 4.65mm, and blade is thick
Degree is 0.5mm.
The foregoing is merely preferred embodiments of the invention, are not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.It is done within the spirit and principles of the present invention it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of dry process UO2Nozzle during powder technology, including coaxial outer tube (1) and inner tube 8, it is characterised in that:
It is equipped with gap between the inner tube (8) and outer tube (1), is equipped with spiral guide vane (6) in the gap, the spiral guide vane
(6) fixed with inner tube (8)；Outer tube (1) end and the inner tube (8) end is equipped with pyramidal structure, outer tube (1) end
Portion's pyramidal structure forms nozzle, and the pyramidal structure of the inner tube (8) end stretches out the nozzle.
2. dry process UO as described in claim 12Nozzle during powder technology, it is characterised in that: the outer tube
It (1) include the outer tube cylinder (2) and outer tube conical surface spout (3) being fixedly connected, the outer tube conical surface spout (3) forms nozzle.
3. dry process UO as claimed in claim 22Nozzle during powder technology, it is characterised in that: the inner tube 8
Including the inner tube cylinder (4) and the inner tube conical surface (5) being fixedly connected, the spiral guide vane (6) is fixed at inner tube cylinder (4) court
To outside one end of the inner tube conical surface (5).
4. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the inner tube cone
Face (5) end diameter is equal with outer tube conical surface spout (3) small end interior diameter, and the inner tube conical surface (5) outside diameter is bored less than outer tube
Face spout (3) big end interior diameter.
5. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the inner tube cone
The outside diameter in face (5) is identical as inner tube cylinder (4) diameter, and the two is fixedly connected, and the small end of the inner tube conical surface (5) stretches out above-mentioned
Outer tube conical surface spout (3) small end.
6. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the outer tube circle
Cylinder (2) is identical with the thickness of outer tube conical surface spout (3).
7. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the outer tube circle
The length ratio of cylinder (2) and outer tube conical surface spout (3) is 10:1~20:1.
8. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the inner tube cone
The length in face (5) is greater than the length of above-mentioned outer tube conical surface spout (3).
9. dry process UO as claimed in claim 32Nozzle during powder technology, it is characterised in that: the spiral is led
Leaf (6) is made of 8 helical blades, is fixedly welded on the outer wall of inner tube cylinder (4) on the inside of each blade (7).
10. dry process UO as claimed in claim 92Nozzle during powder technology, it is characterised in that: the blade
(7) length accounts for the 1/5~2/5 of inner tube cylinder (4) length, and the height of blade (7) is the 2/5~3/5 of inner tube cylinder (4) diameter,
90~105mm of screw pitch of blade (7), blade (7) is with a thickness of 0.2~0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721834773.5U CN208390026U (en) | 2017-12-25 | 2017-12-25 | A kind of nozzle during dry process UO2 powder technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721834773.5U CN208390026U (en) | 2017-12-25 | 2017-12-25 | A kind of nozzle during dry process UO2 powder technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208390026U true CN208390026U (en) | 2019-01-18 |
Family
ID=65065714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721834773.5U Active CN208390026U (en) | 2017-12-25 | 2017-12-25 | A kind of nozzle during dry process UO2 powder technology |
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| Country | Link |
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| CN (1) | CN208390026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954475A (en) * | 2017-12-25 | 2019-07-02 | 中核建中核燃料元件有限公司 | A kind of dry process UO2Nozzle during powder technology |
| CN114040817A (en) * | 2019-04-18 | 2022-02-11 | 戈拉特有限公司 | Self-cleaning nozzle |
-
2017
- 2017-12-25 CN CN201721834773.5U patent/CN208390026U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954475A (en) * | 2017-12-25 | 2019-07-02 | 中核建中核燃料元件有限公司 | A kind of dry process UO2Nozzle during powder technology |
| CN114040817A (en) * | 2019-04-18 | 2022-02-11 | 戈拉特有限公司 | Self-cleaning nozzle |
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