CN102350080A - Experimental loop purification cold trap of liquid metal sodium - Google Patents
Experimental loop purification cold trap of liquid metal sodium Download PDFInfo
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- CN102350080A CN102350080A CN2011101824768A CN201110182476A CN102350080A CN 102350080 A CN102350080 A CN 102350080A CN 2011101824768 A CN2011101824768 A CN 2011101824768A CN 201110182476 A CN201110182476 A CN 201110182476A CN 102350080 A CN102350080 A CN 102350080A
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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
Abstract
The invention discloses an experimental loop purification cold trap of liquid metal sodium, which comprises a top cover, an external barrel body and a heat preservation sleeve, wherein, a liquid sodium inlet and a liquid sodium outlet are arranged at the upper part of the top cover; the inner part of the top cover is a cavity; the cavity is communicated with the liquid sodium outlet; the center of the top cover penetrates through an electrical heating rod blind pipe axially; the cavity in the top cover is communicated with a heat economizer at the lower part of the top cover; the lower part of the heat economizer is connected with a central reflux pipe; stainless steel meshes are fixedly wounded on the central reflux pipe circumferentially; heating wires are wounded at the outer side of the external barrel body uniformly to control the temperature of the barrel body; three temperature measuring points are respectively arranged on the parts at different heights of the barrel wall; the lower part of the barrel body is provided with sodium exhausting holes which are used for exhausting the sodium when the loop stops running; a thermocouple blind pipe extends out from the bottom of the barrel body; and the thermocouple blind pipe is used for measuring the temperature of the sodium near the steel wire meshes. The device provided by the invention has the characteristics of being high in heat efficiency, saving space, and having low processing difficulty, good sealing performance, accurate temperature control and good filtration effect.
Description
Technical field
The invention belongs to the purification technology field of liquid metal sodium, be specifically related to a kind of being applied in the liquid metal sodium experimental circuit the aseptic cold-trap device of sodium.
Background technology
Liquid metal sodium is because its good heat-conducting, mobile performance, good neutron performance and with stainless steel material compatibility in the use, become the first-selected coolant material of present fast neutron reactor.Therefore in recent years progressively deeply for liquid metal sodium each item Performance Experiment.Guarantee the reliable of normal operation of liquid metal sodium experimental loop and experimental result, all must keep the pure of liquid metal sodium wherein, this constantly purifies sodium with regard to needs, and purifier commonly used is the purification cold-trap.
The basic functional principle that liquid metal sodium purifies cold-trap is characteristics of utilizing impurity solubility in the sodium to descend rapidly with the reduction of Liquid Sodium temperature.When sodium was flowed through stainless (steel) wire, wherein impurity crystallization on steel wire was separated out and is adsorbed, thereby Liquid Sodium is purified.
For example, Chinese patent 97249431.6 provides a kind of sodium vapour trap, and it comprises cylindrical shell and the back flow plate assembly that is arranged in the cylindrical shell, and the back flow plate assembly is made up of the bowl-shape back flow plate interval overlapping of multilayer, and the bowl-shape back flow plate of each layer uses sleeve spaced apart successively.The sodium vapour trap unit volume condensation area of this kind structure is big, path length, and condensation effect is good, and therefore it is little to be designed to volume, and the device of compact conformation is particularly suitable for the instrument sodium vapour trap.In addition, Chinese patent 200610140531.6 discloses a kind of sodium vapour trap, and it comprises inside and outside sleeve pipe, forms cooled gas path between inside and outside sleeve pipe, comes condensation sodium steam through the method for forced condensation.More than the purpose of sodium vapour trap in two patents be the sodium steam in the condensation argon gas, disposal ability is very limited, and does not have positive effect for the removal of impurity in the Liquid Sodium, suitable in-line purification as liquid metal sodium.
And for example, Chinese patent 200710198421.X provides the cold-trap that a kind of radiosodium in-line purification is used.This cold-trap outer cylinder body and sleeve, the outer setting of outer cylinder body has the sleeve of serpentine coil, sleeve internal-filling liquid attitude Na-K alloy, the serpentine coil two ends communicate with organic coolant import, outlet respectively.Serpentine coil is interior to be cooling agent with Esso 500# liquid.The detergent power of this kind cold-trap is strong, can be used for the in-line purification of the large-sized liquefied sodium metal of fast reactor loop radiosodium.But shortcoming is: (1) complex structure, particularly be full of Na-K alloy and built-in organic coolant jackets in the sleeve of the outside, and difficulty of processing is big; (2) bulky, be inappropriate for than the small scale experiments loop and assemble; (3) bring cost high by above 2, increased considerably the cost of experiment, be not suitable for general experimental loop.
Summary of the invention
The object of the invention is exactly the shortcoming that overcomes above-mentioned prior art; A kind of detergent power that promptly can guarantee the liquid towards sodium metal is provided; Can simplify labyrinth again, reasonable Arrangement control volume, the cold-trap that is suitable for the use of middle and small scale liquid metal sodium experimental loop equipment that reduces cost.
The objective of the invention is to realize through following technical scheme:
The liquid metal sodium experimental loop purifies cold-trap, comprises top cover, outer cylinder body and insulation sleeve, and said top cover top is provided with Liquid Sodium Liquid Sodium inlet and Liquid Sodium outlet, and top cover inside is a cavity, and this cavity is communicated with the Liquid Sodium outlet; The top cover central shaft is to running through the electrically heated rod blind pipe, and the economizer of top cover inner chamber body and top cover bottom is connected, and the economizer below connects the center return duct; The circumferentially fixing stainless (steel) wire that twines of center return duct; Outer cylinder body outside uniform winding heater strip application cylinder temperature; Barrel differing heights place is provided with 3 points for measuring temperature respectively; The cylindrical shell below row of setting sodium hole; Row sodium hole is used for loop row's sodium when out of service; And stretch a thermocouple blind pipe from the cylindrical shell bottom, the thermocouple blind pipe is used near the sodium temperature of measuring steel wire net.
Said economizer is made up of economizer inner coil pipe and the outer coil pipe two cover coil pipes of economizer, and top cover inner chamber body downside has two holes, and the Liquid Sodium flow region between economizer inner coil pipe and heating rod blind pipe is provided with one of point for measuring temperature.
The said stainless (steel) wire inboard and the outside are fixed by the cylinder that corrosion resistant plate with holes rolls, and the stainless (steel) wire top and bottom are fixed by the stainless steel plectane.
Said outer cylinder body and top cover are taked the copper washer sealing, with the circumferential compression fit in bolt edge.
Said insulation sleeve is that half cylindrical shell that two stainless steel sheet| parcel heat-preservation cotton form is formed by connecting through hinge, is used to regulate the heat-sinking capability of cold-trap, the application cylinder temperature.
Said stainless (steel) wire is to be processed by 304 treated stainless steels.
Liquid metal sodium experimental loop of the present invention purifies cold-trap, comprises top cover, outer cylinder body and insulation sleeve to be opened/closed.Top cover top is provided with the Liquid Sodium import and export, and top cover inside is a cavity, communicates with the sodium outlet; The top cover central shaft is to running through the electrically heated rod blind pipe; The economizer of top cover inner chamber body and top cover bottom is connected; Economizer is made up of inside and outside two cover coil pipes; Therefore top cover inner chamber body downside has two holes; Liquid Sodium flow region between economizer inner coil pipe and heating rod blind pipe is provided with one of point for measuring temperature, and the economizer below connects the center return duct; The center return duct is circumferentially fixing to twine 304 treated stainless steel steel wires, and the stainless (steel) wire medial and lateral are fixed by the cylinder that corrosion resistant plate with holes rolls, and is upper and lowerly fixed by the stainless steel plectane.Outer cylinder body outside uniform winding heater strip makes things convenient for the application cylinder temperature; Barrel differing heights place is provided with 3 points for measuring temperature respectively, the cylindrical shell below row of setting sodium hole, row's sodium when making things convenient for the loop out of service; And stretch a thermocouple blind pipe from the bottom, be convenient for measuring near the sodium temperature of steel wire.Outer cylinder body and top cover are taked the copper washer sealing, with the circumferential compression fit in bolt edge.The insulation sleeve is that half cylindrical shell that two stainless steel sheet| parcel heat-preservation cotton form is formed by connecting through hinge, makes things convenient for folding, can regulate the heat-sinking capability of cold-trap, makes things convenient for the application cylinder temperature.
The present invention has the following advantages and beneficial effect:
1. economizer is made up of inside and outside two cover coil pipes, has improved the thermal efficiency, saves the space;
2. employing top cover, outer cylinder body split processing design has reduced difficulty of processing;
3. adopt the copper washer sealing, circumferentially bolt compresses, and has guaranteed good sealing property;
4. adopt the multilayer stainless (steel) wire to filter, guarantee good filter effect;
5. reasonable Arrangement temperature survey point can accurately be monitored the cold-trap operating temperature;
6. adopt outer heater strip to be incubated, and have and to open and close heat-insulation layer, can control the cold-trap operating temperature easily and accurately, to obtain the optimum filtration effect.
In a word, this device effectively sodium in the liquid towards sodium metal loop carries out filtration, purification, and is reasonable in design, simple in structure, saves the space, conveniently uses operation, is fit to be assemblied in experiment liquid metal sodium loop.
Description of drawings
Fig. 1 is the overall structure sketch map after the present invention assembling;
Fig. 2 is a cap structure sketch map of the present invention;
Fig. 3 is an outer cylinder body structural representation of the present invention;
Fig. 4 is a muff barrel structure sketch map of the present invention.
Wherein: a is a top cover; B is an outer cylinder body; C is the insulation sleeve; D is a copper washer; E is a bolt; 1 is the Liquid Sodium inlet; 2 is cavity; 3 is the outer coil pipe of economizer; 4 is the economizer inner coil pipe; 5 is return duct; 6 is last stainless steel plectane; 7 is outer screen; 8 is return duct outside stainless steel filtering net; 9 are following stainless steel plectane; 10 is interior screen; 11 is thermocouple; 12 is gasket groove; 13 are the Liquid Sodium outlet; 14 is the heating rod blind pipe; 15 is point for measuring temperature; 16 are row's sodium mouth; 17 is thermocouple; 18 is heater strip; 19 is stainless steel sheet|; 20 are the folding handle; 21 is heat-preservation cotton.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Referring to Fig. 1, the present invention includes top cover, outer cylinder body, the insulation sleeve with the copper washer sealing, circumferentially compresses connection with 12 bolts between top cover and the outer cylinder body.But the insulation sleeve of folding is positioned at the outer cylinder body outside.
Referring to Fig. 2; The top cover upper opening has the Liquid Sodium inlet; Liquid Sodium outlet and heating rod blind pipe; Top cover inside is cavity, connects the outer coil pipe of economizer inner coil pipe and economizer under the cavity, and economizer coil pipe lower end and return duct are connected; Return duct outside stainless steel filtering net is radially being fixed by interior screen with holes and outer screen; Axially fixed by last stainless steel plectane and following stainless steel plectane, the thermocouple near the sodium temperature measurement economizer is gasket groove.
Referring to Fig. 3, the gasket groove that cooperates with top cover is left on outer cylinder body top, arranges 3 points for measuring temperature vertically respectively, and the cylindrical shell bottom has row's sodium mouth, inserts a thermocouple measurement tube bottom sodium temperature from the bottom, and heater strip is wrapped in the cylindrical shell outside.
Referring to Fig. 4, the insulation sleeve is that two half cylindrical shells that formed stainless steel sheet| parcel heat-preservation cotton are formed by connecting through hinge.
During work, at first through heating rod and external heat silk cylindrical shell is heated, be incubated sleeve this moment is closed.In the time of near the each several part temperature reaches 140 ℃ in the cylindrical shell, liquid metal sodium can get into cylindrical shell from Liquid Sodium inlet, and this moment is through regulating heating rod and heater strip power, and the aperture that control simultaneously is incubated sleeve is regulated about sodium temperature to 120 ℃.Liquid metal sodium flows through the economizer surrounding space; Continue to be downward through the stainless (steel) wire zone; Wherein impurity is separated out and is attached on the stainless (steel) wire in the stainless (steel) wire zone; Sodium after the filtration gets into return duct and upwards gets into outer coil pipe of economizer and economizer inner coil pipe; And come together in the top cover cavity then through Liquid Sodium outlet outflow cold-trap, completion filter process.Like off-test, the loop operation stops, and liquid metal sodium in the cold-trap should be flow back in the loop storage sodium jar by outer cylinder body bottom row's sodium mouth.
Through in certain liquid metal sodium experimental circuit, use and in the running of loop to the loop in liquid metal sodium not timing sample analysis; Prove that this cold-trap can satisfy the requirement of experimental loop for liquid metal sodium purity, and can purify for liquid metal sodium in the loop provides continuous on-line.And because its simplicity of design, compactness has been saved experimentation cost greatly, has reduced the shared volume in loop.Therefore the present invention is fit to test assemble with the liquid metal sodium loop very much.
Above content is to combine concrete preferred implementation to further explain that the present invention did; Can not assert that the specific embodiment of the present invention only limits to this; Those of ordinary skill for technical field under the present invention; Under the prerequisite that does not break away from the present invention's design; Can also make some simple deduction or replace, all should be considered as belonging to the present invention and confirm scope of patent protection by claims of being submitted to.
Claims (6)
1. the liquid metal sodium experimental loop purifies cold-trap, comprises top cover, outer cylinder body and insulation sleeve, it is characterized in that: said top cover top is provided with Liquid Sodium Liquid Sodium inlet and Liquid Sodium outlet, and top cover inside is a cavity, and this cavity is communicated with the Liquid Sodium outlet; The top cover central shaft is to running through the electrically heated rod blind pipe, and the economizer of top cover inner chamber body and top cover bottom is connected, and the economizer below connects the center return duct; The circumferentially fixing stainless (steel) wire that twines of center return duct; Outer cylinder body outside uniform winding heater strip application cylinder temperature; Barrel differing heights place is provided with 3 points for measuring temperature respectively; The cylindrical shell below row of setting sodium hole; Row sodium hole is used for loop row's sodium when out of service; And stretch a thermocouple blind pipe from the cylindrical shell bottom, the thermocouple blind pipe is used near the sodium temperature of measuring steel wire net.
2. the liquid metal sodium experimental loop purifies cold-trap according to claim 1; It is characterized in that: said economizer is made up of economizer inner coil pipe and the outer coil pipe two cover coil pipes of economizer; Top cover inner chamber body downside has two holes, and the Liquid Sodium flow region between economizer inner coil pipe and heating rod blind pipe is provided with one of point for measuring temperature.
3. the liquid metal sodium experimental loop purifies cold-trap according to claim 1, it is characterized in that: the said stainless (steel) wire inboard and the outside are fixed by the cylinder that corrosion resistant plate with holes rolls, and the stainless (steel) wire top and bottom are fixed by the stainless steel plectane.
4. the liquid metal sodium experimental loop purifies cold-trap according to claim 1, it is characterized in that: said outer cylinder body and top cover are taked the copper washer sealing, with the circumferential compression fit in bolt edge.
5. the liquid metal sodium experimental loop purifies cold-trap according to claim 1, it is characterized in that: said insulation sleeve is that half cylindrical shell that two stainless steel sheet| parcel heat-preservation cotton form is formed by connecting through hinge, is used to regulate the heat-sinking capability of cold-trap, the application cylinder temperature.
6. the liquid metal sodium experimental loop purifies cold-trap according to claim 1, and it is characterized in that: said stainless (steel) wire is to be processed by 304 treated stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101824768A CN102350080B (en) | 2011-06-30 | 2011-06-30 | Experimental loop purification cold trap of liquid metal sodium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101824768A CN102350080B (en) | 2011-06-30 | 2011-06-30 | Experimental loop purification cold trap of liquid metal sodium |
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| Publication Number | Publication Date |
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| CN102350080A true CN102350080A (en) | 2012-02-15 |
| CN102350080B CN102350080B (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101824768A Expired - Fee Related CN102350080B (en) | 2011-06-30 | 2011-06-30 | Experimental loop purification cold trap of liquid metal sodium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277180A (en) * | 2019-07-19 | 2019-09-24 | 西安交通大学 | A kind of Sodium vapour capture and reflux unit in liquid metal sodium loop |
| CN111192701A (en) * | 2020-01-09 | 2020-05-22 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
| CN111599497A (en) * | 2020-04-21 | 2020-08-28 | 中国原子能科学研究院 | A crystallization cooling tube for removing impurity in sodium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147822A (en) * | 1984-12-18 | 1986-07-05 | Mitsubishi Atom Power Ind Inc | Liquid metal refining apparatus incorporated with tank |
| US4737281A (en) * | 1984-01-05 | 1988-04-12 | Service National Electricite De France | Cold trap for purifying liquid sodium containing impurities |
| CN1594615A (en) * | 2003-09-11 | 2005-03-16 | 中国原子能科学研究院 | Sodium purifying process and purification system thereof |
| CN101231898A (en) * | 2007-12-11 | 2008-07-30 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN101807441A (en) * | 2010-03-09 | 2010-08-18 | 中国原子能科学研究院 | High-temperature sodium heat convection test loop |
-
2011
- 2011-06-30 CN CN2011101824768A patent/CN102350080B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737281A (en) * | 1984-01-05 | 1988-04-12 | Service National Electricite De France | Cold trap for purifying liquid sodium containing impurities |
| JPS61147822A (en) * | 1984-12-18 | 1986-07-05 | Mitsubishi Atom Power Ind Inc | Liquid metal refining apparatus incorporated with tank |
| CN1594615A (en) * | 2003-09-11 | 2005-03-16 | 中国原子能科学研究院 | Sodium purifying process and purification system thereof |
| CN101231898A (en) * | 2007-12-11 | 2008-07-30 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN101807441A (en) * | 2010-03-09 | 2010-08-18 | 中国原子能科学研究院 | High-temperature sodium heat convection test loop |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277180A (en) * | 2019-07-19 | 2019-09-24 | 西安交通大学 | A kind of Sodium vapour capture and reflux unit in liquid metal sodium loop |
| CN111192701A (en) * | 2020-01-09 | 2020-05-22 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
| CN111192701B (en) * | 2020-01-09 | 2021-11-02 | 中国原子能科学研究院 | Integrated inlet connecting pipe |
| CN111599497A (en) * | 2020-04-21 | 2020-08-28 | 中国原子能科学研究院 | A crystallization cooling tube for removing impurity in sodium |
| CN111599497B (en) * | 2020-04-21 | 2022-03-11 | 中国原子能科学研究院 | A crystallization cooling tube for removing impurity in sodium |
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| CN102350080B (en) | 2013-07-31 |
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Granted publication date: 20130731 Termination date: 20160630 |