CN109443579A - A kind of multiple spot idol heating element for liquid metals sodium hot test circuit - Google Patents
A kind of multiple spot idol heating element for liquid metals sodium hot test circuit Download PDFInfo
- Publication number
- CN109443579A CN109443579A CN201811518111.6A CN201811518111A CN109443579A CN 109443579 A CN109443579 A CN 109443579A CN 201811518111 A CN201811518111 A CN 201811518111A CN 109443579 A CN109443579 A CN 109443579A
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- CN
- China
- Prior art keywords
- magnesia
- guide post
- steel strand
- strand wires
- idol
- Prior art date
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Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 91
- 238000012360 testing method Methods 0.000 title claims abstract description 67
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 51
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 51
- 239000011734 sodium Substances 0.000 title claims abstract description 51
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 49
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 292
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 148
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- 239000000843 powder Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 14
- 229910052573 porcelain Inorganic materials 0.000 claims description 11
- 230000035807 sensation Effects 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000011049 filling Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
This application discloses a kind of multiple spot idol heating elements for liquid metals sodium hot test circuit, it include: the first magnesia guide post, second magnesia guide post, double helix heating wire, steel strand wires, six temperature elements, protection metal pipe, first magnesia guide post is fixedly connected with the second magnesia guide post, the outer surface of first magnesia guide post and the outer surface of the second magnesia guide post are all uniformly arranged there are six mounting groove, six temperature elements are respectively arranged in six mounting grooves, six temperature elements are installed to the depth of mounting groove depending on the size of test requirements document, six temperature measuring points can be integrated from different depth and orientation.Double helix heating wire is arranged in the first magnesia guide post, steel strand wires are arranged in the second magnesia guide post, six temperature elements are arranged on the first magnesia guide post and the second magnesia guide post, greatly simplify test structure type that is original complicated and taking up space, improve the accuracy of test result.
Description
Technical field
This application involves nuclear reactor hot test fields, more particularly to one kind to be used for liquid metals sodium hot test circuit
Multiple spot idol heating element.
Background technique
In the hot test circuit of nuclear reactor, liquid metal is applied as nuclear reactor coolant in nuclear reactor
In hot test, and common liquid metal is liquid metal sodium.
In the hot test circuit of liquid metal sodium, need to heat liquid metal sodium and carry out liquid metal sodium
Thermometric, then electrical heating elements and temperature element will be used, original testing inspection mode is peripheral not in heating element
Multiple temperature elements are installed with depth and orientation zone, in addition to this, are additionally provided with detection pressure, flow velocity and other analysis instruments
Sensor monitoring point, lead to that itself is more crowded than narrow detected region, and the arrangement of peripheral detecting element
It is sufficiently complex, it thus causes in the environment of high temperature height irradiation, for some specific warm area, detected heat medium
Characteristic distorition misalignment.
Summary of the invention
It is existing to solve this application provides a kind of multiple spot idol heating element for liquid metals sodium hot test circuit
For the peripheral detecting element problem that structure is complicated, occupancy detection space is big in nuclear reactor hot test circuit, also solve
The problem of specific warm area, the characteristic distorition misalignment of detected heat medium.
This application provides a kind of multiple spot idol heating elements for liquid metals sodium hot test circuit, comprising: first
Magnesia guide post, the second magnesia guide post, double helix heating wire, steel strand wires, six temperature elements, protection metal pipes, in which:
The diameter of the first magnesia guide post is identical as the diameter of the second magnesia guide post, first magnesia
Guide post is fixedly connected with the second magnesia guide post；
A heating wire installation through-hole is provided on the first magnesia guide post, the double helix heating wire is set to institute
It states in heating wire installation through-hole；
There are two steel strand wires installation through-holes, one end of two steel strand wires to distinguish for setting on the second magnesia guide post
It is connect with the both ends of the double helix heating wire, the other end of two steel strand wires is each passed through two steel strand wires installations
Through-hole；
The outer surface of the first magnesia guide post and the outer surface of the second magnesia guide post are all evenly arranged with six
A mounting groove, six mounting grooves and the second magnesia guide post outer surface of the first magnesia guide post outer surface
Six mounting grooves correspond, and six temperature elements are respectively arranged in six mounting grooves, six surveys
One end of warm element is respectively positioned in the first magnesia guide post, and the other end of six temperature elements both passes through described second
Magnesia guide post；
The diameter of the protection metal pipe is greater than the diameter of the first magnesia guide post, and the protection metal pipe is hollow
Structure；
The protection metal pipe is sheathed on the first magnesia guide post and the second magnesia guide post；
The first magnesia guide post and the second magnesia guide post and the protection metal pipe have spacing.
Selectable, the multiple spot idol heating element for liquid metals sodium hot test circuit further includes magnesia
Powder, the magnesia powder are set between the protection metal pipe and the double helix heating wire, six temperature elements
In gap；
The magnesia powder is set to the first magnesia guide post and the double helix heating wire, six thermometric members
In gap between part；
The magnesia powder is set between the second magnesia guide post and the steel strand wires, six temperature elements
Gap in.
Selectable, the multiple spot idol heating element for liquid metals sodium hot test circuit further includes six roots of sensation thermometric
Element lead-out wire, two steel strand wires lead-out wires and a porcelain head, in which:
One end of the six roots of sensation temperature element lead-out wire passes through second magnesia with six temperature elements respectively
One end of guide post connects, and the other end of the six roots of sensation temperature element lead-out wire both passes through the porcelain head；
One end of two steel strand wires lead-out wires passes through two steel strand wires installation through-holes with the steel strand wires respectively
One end connection, the other end of two steel strand wires lead-out wires both passes through the porcelain head.
Selectable, the temperature element is thermocouple.
From the above technical scheme, this application provides a kind of multiple spot for liquid metals sodium hot test circuit is even
Heating element, comprising: the first magnesia guide post, the second magnesia guide post, double helix heating wire, steel strand wires, six temperature elements,
Protection metal pipe, the first magnesia guide post are fixedly connected with the second magnesia guide post, the first magnesia guide post
Outer surface and the outer surface of the second magnesia guide post be all uniformly arranged there are six mounting groove, six temperature elements point
It is not set in six mounting grooves, six temperature elements are installed to the depth of the mounting groove according to test requirements document
Depending on size, therefore, six temperature measuring points can be integrated from different depth and orientation.Double helix heating wire is arranged in first oxygen
Change in magnesium guide post, the steel strand wires are arranged in the second magnesia guide post, and six temperature elements setting is described the
On one magnesia guide post and the second magnesia guide post, after filling magnesium powder and draw processing, finished product is used for liquid gold
The diameter for belonging to the multiple spot idol heating element in sodium hot test circuit is 6.7mm, i.e., is 6.7mm for liquid metals sodium in diameter
Six temperature measuring points are integrated on the multiple spot idol heating element in hot test circuit, greatly simplify test that is original complicated and taking up space
Structure type improves the accuracy of test result.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structure of the multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
Schematic diagram；
Fig. 2 is a kind of structure of the multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
Schematic diagram；
Fig. 3 is a kind of part of the multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
Schematic diagram；
Fig. 4 is structural schematic diagram of the Fig. 3 along the direction C-C；
Fig. 5 is a kind of portion of multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
Separation structure schematic diagram；
Fig. 6 is the first of a kind of multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
The structural schematic diagram of magnesia guide post；
Fig. 7 is the second of a kind of multiple spot idol heating element for liquid metals sodium hot test circuit provided by the present application
The structural schematic diagram of magnesia guide post.
It illustrates:
Wherein, the first magnesia of 1- guide post；2- the second magnesia guide post；3- heating wire installation through-hole；4- double helix electric heating
Silk；5- steel strand wires installation through-hole；6- steel strand wires；7- mounting groove；8- temperature element；9- protection metal pipe；10- magnesia powder；12-
Temperature element lead-out wire；13- steel strand wires lead-out wire；14- porcelain head；15- magnesia guide post tie point.
Specific embodiment
Below with reference to the attached drawing in the application, the technical scheme in the embodiment of the application is clearly and completely described,
Obviously, described embodiment is only a part of the embodiment of the application, instead of all the embodiments.Based in the application
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Many details are explained in the following description in order to fully understand the application, but the application can be with
It is different from the other modes that describe again using other to implement, those skilled in the art can be without prejudice to the application intension
In the case of do similar popularization, therefore the application is not limited by the specific embodiments disclosed below.
Referring to Fig. 1 to Fig. 7, this application provides a kind of multiple spot idol heating units for liquid metals sodium hot test circuit
Part, comprising: the first magnesia guide post 1, the second magnesia guide post 2, double helix heating wire 4,6, six temperature elements 8 of steel strand wires,
Protection metal pipe 9, in which:
The diameter of the first magnesia guide post 1 is identical as the diameter of the second magnesia guide post 2, first oxidation
Magnesium guide post 1 is fixedly connected with the second magnesia guide post 2, and the first magnesia guide post 1 is with the second magnesia guide post 2 as schemed
Magnesia guide post tie point 15 in 1；
A heating wire installation through-hole 3 is provided on the first magnesia guide post 1, the double helix heating wire 4 is arranged
In in the heating wire installation through-hole 3；
Above-mentioned double helix heating wire 4 include two heating wire, two heating wire spiralization double helix heating wire 4,
Space has been saved in this way, and the screw diameter of above-mentioned double helix heating wire 4 is larger, is conducive to the transmitting of heat, simultaneously because heat dissipation
Better performances, therefore increase power density；
Above-mentioned steel strand wires 6 are fabricated to by nickel filament.
There are two steel strand wires installation through-hole 5, one end of two steel strand wires 6 for setting on the second magnesia guide post 2
It is connect respectively with the both ends of the double helix heating wire 4, the other end of two steel strand wires 6 is each passed through two steel and twists
Line installation through-hole 5；
The outer surface of the first magnesia guide post 1 and the outer surface of the second magnesia guide post 2 are all evenly arranged with
Outside six mounting grooves 7, six mounting grooves 7 of 1 outer surface of the first magnesia guide post and the second magnesia guide post 2
Six mounting grooves 7 on surface correspond, and six temperature elements 8 are respectively arranged in six mounting grooves 7, institute
The one end for stating six temperature elements 8 is respectively positioned in the first magnesia guide post 1, and the other end of six temperature elements 8 is equal
Across the second magnesia guide post 2；
The diameter of the protection metal pipe 9 is greater than the diameter of the first magnesia guide post 1, and the protection metal pipe 9 is
Hollow structure；
The protection metal pipe 9 is sheathed on the first magnesia guide post 1 and the second magnesia guide post 2.
The protection metal pipe 9 is the cavity tube body of one end sealing, and protection metal pipe 9 is located on first magnesia and leads
The periphery of column 1 and the second magnesia guide post 2, the first magnesia guide post 1 and the second magnesia guide post 2 with it is described
Protection metal pipe 9 has spacing.
Selectable, the multiple spot idol heating element for liquid metals sodium hot test circuit further includes magnesia powder
10, the magnesia powder 10 be set to the protection metal pipe 9 and the double helix heating wire 4, six temperature elements 8 it
Between gap in, in magnesia powder of the gap inner cavity filled with high-purity, since magnesia has, fusing point is high, high temperature resistant and heat transfer
Effect, therefore can extend in the magnesia powder of 9 lumen loading high-purity of protection metal pipe provided by the present invention for liquid gold
Belong to the service life of the multiple spot idol heating element in sodium hot test circuit；
The magnesia powder 10 is set to the first magnesia guide post 1 and the double helix heating wire 4, six surveys
In gap between warm element 8；
The magnesia powder 10 is set to the second magnesia guide post 2 and the steel strand wires 6, six temperature elements
In gap between 8.
Selectable, the multiple spot idol heating element for liquid metals sodium hot test circuit further includes six roots of sensation thermometric
12, two steel strand wires lead-out wires 13 of element lead-out wire and a porcelain head 14, in which:
One end of the six roots of sensation temperature element lead-out wire 12 passes through second oxidation with six temperature elements 8 respectively
One end of magnesium guide post 2 connects, and the other end of the six roots of sensation temperature element lead-out wire 12 both passes through the porcelain head 14；
It is logical that one end of two steel strand wires lead-out wires 13 passes through two steel strand wires installations with the steel strand wires 6 respectively
The one end in hole 5 connects, and the other end of two steel strand wires lead-out wires 13 both passes through the porcelain head 14.
Selectable, the diameter of the first magnesia guide post 1 and the second magnesia guide post 2 is 7.3mm-
7.4mm, after filling magnesium powder and draw processing, the multiple spot idol heating unit for liquid metals sodium hot test circuit of finished product
The diameter of part reduces to 6.7mm, i.e., in the multiple spot idol heating element for liquid metals sodium hot test circuit that diameter is 6.7mm
On be integrated with six temperature measuring points.
The diameter of above-mentioned protection metal pipe 9 is 8.5mm, wall thickness 0.5mm.
Selectable, the temperature element 8 is thermocouple, and the temperature element used in electric heating tube at present is usually will be hot
Thermocouple wire is turned back, then single-ended extraction, and between round-trip thermocouple wire and thermocouple wire is with outer wall metal cannot contact, mutually
Between the thermocouple negligible amounts that need to keep biggish distance, therefore can be arranged in same space.
Multiple spot idol heating element described herein for liquid metals sodium hot test circuit is using armouring warm
There are protection pipe in galvanic couple, the outer surface of armoured thermocouple, and insulating materials is filled between protection pipe and thermocouple wire, therefore,
It can directly be contacted with the inner wall of protection pipe.Meanwhile the multiple spot described herein for liquid metals sodium hot test circuit
The diameter for the armoured thermocouple that even heating element uses is arranged for 1mm along the tube wall of protection pipe, therefore, can accommodate more
Thermocouple measure the medium temperature of different location, thermometric is also more accurate.
In use, electrical heating elements are put into experimental rig, so in the circuit for carrying out liquid metal sodium hot test
Metallic sodium is melted afterwards, is capable of the service life of guarantee test device, and energy in this way after liquid metal sodium is heated to 880 DEG C
Nuclear reaction situation is enough simulated, the data of thermocouple are read by instrument.
From the above technical scheme, this application provides a kind of multiple spot for liquid metals sodium hot test circuit is even
Heating element, comprising: 6, six the first magnesia guide post 1, the second magnesia guide post 2, double helix heating wire 4, steel strand wires thermometrics
Element 8, protection metal pipe 9, the first magnesia guide post 1 are fixedly connected with the second magnesia guide post 2, first oxygen
The outer surface of the outer surface and the second magnesia guide post 2 of changing magnesium guide post 1 is all uniformly arranged there are six mounting groove 7, and described six
A temperature element 8 is respectively arranged in six mounting grooves 7, and six temperature elements 8 are installed to the depth of the mounting groove 7
Degree is depending on the size of test requirements document, therefore, can integrate six temperature measuring points from different depth and orientation.Double helix heating wire
4 are arranged in the first magnesia guide post 1, and the steel strand wires 6 are arranged in the second magnesia guide post 2, and described six
Temperature element 8 is arranged on the first magnesia guide post 1 and the second magnesia guide post 2, by filling magnesium powder and the draw
After processing, the diameter of the multiple spot idol heating element for liquid metals sodium hot test circuit of finished product is 6.7mm, i.e., in diameter
It is significantly simple to be integrated with six temperature measuring points on the multiple spot idol heating element for liquid metals sodium hot test circuit of 6.7mm
Change the original complicated test structure type to take up space again, improves the accuracy of test result.
Present invention also provides a kind of preparation sides of multiple spot idol heating element for liquid metals sodium hot test circuit
The preparation method of method, the multiple spot idol heating element for liquid metals sodium hot test circuit includes:
Step S1: by high-purity magnesium oxide powder hybrid adhesive, carrying out die casting in a mold, then passes through high temperature sintering, obtains
To the first magnesia guide post 1 and the second magnesia guide post 2；
The diameter of above-mentioned first magnesia guide post 1 and the second magnesia guide post 2 is 6.7mm, and described first aoxidizes
A heating wire installation through-hole 3 is provided on magnesium guide post 1, there are two steel strand wires to install for setting on the second magnesia guide post 2
Through-hole 5.
Step S2: the step of making double helix heating wire 4 and steel strand wires 6, making double helix heating wire 4 and steel strand wires 6 is such as
Under:
The string diameter of double helix heating wire, resistance and length are determined into rear blanking doubling, are arranged on dedicated filament winding device
Then doubling end is fixed on wrapping wire plug end by good coiling pitch, turn to the uniform double helix heating wire of screw pitch；
Be fabricated to two strands of steel strand wires with nickel filament, then using steel strand wires as low resistance cold lead, respectively with double spiral shells
The hinge joint of heating wire two ends and test resistance value are revolved in technique claimed range, are made a record.
First magnesia guide post 1: being sheathed on the outside of double helix heating wire 4 by step S3, then divides two steel strand wires 6
It does not penetrate in two steel strand wires installation through-holes 5 of the second magnesia guide post 2, by the mounting groove 7 on the first magnesia guide post 1
It is corresponded with the mounting groove 7 on the second magnesia guide post 2, then thermocouple is successively penetrated to mounting groove 7, thermocouple insertion
Depth size as needed determines.
Step S4: by the double helix heating wire assembled, thermocouple and the first magnesia guide post 1, the second magnesia guide post 2
It is fixed with fixed material, protection metal pipe 9 is then sheathed on the first magnesia guide post 1 and the second magnesia guide post
On 2, during being arranged, protection metal pipe 9 is inserted on one side, then removes fixed material on one side, what protection metal pipe 9 was inserted in
Depending on depth is required according to the cold and hot segment length of the multiple spot idol heating element for liquid metals sodium hot test circuit, so
The exit of the exit of temperature element, steel strand wires is clogged with high temperature cotton afterwards.
Step S5: according to filling out powder density 2.5g/cm3-3.2g/cm3Requirement, count counted remaining space, be converted into oxidation
The weight of magnesium powder 10 weighs magnesia powder 10, quantitative to insert high-purity magnesium oxide from the end of protection metal pipe 9 on powder filler
Powder twists protection metal pipe 9, temperature element 8, double helix heating wire 4, the first magnesia guide post 1, the second magnesia guide post 2, steel
Magnesia powder 10 is filled up in gap between line 6.
Step S6: the end of protection metal pipe 9 is blocked with rubber plug, then with the electricity at ohmmeter test 6 both ends of steel strand wires
Resistance whether with fill out powder before, the resistance value after coiling assembly it is identical；
Steel strand wires 6 and protection metal pipe 9 are tested with 500V insulation resistance meter, insulation >=500M Ω between temperature element 8 is used
Voltage resistant instrument tests steel strand wires 6 and protection metal pipe 9, and pressure resistance reaches 2000V/min, no breakdown, flicker free between temperature element 8.
Step S7: pressing sizing reduction 0.3mm precompressed caliber on multiple roll machine for shrinking, then corresponds in loading on machine for shrinking of swaging
The mold of existing diameter sizing reduction, sizing reduction from 1mm-0.05mm more mold exchange and gasket step by step, by forging and stamping tube reducing, up to reaching
Technique requirement.
Step S8: temperature element lead-out wire 12, steel strand wires lead-out wire 13 and porcelain head 14 are finally made.
It is prepared according to the preparation method of the above-mentioned multiple spot idol heating element for liquid metals sodium hot test circuit
The diameter of multiple spot idol heating element finished product for liquid metals sodium hot test circuit is 6.7mm, and above-mentioned first magnesia is led
The diameter of column 1 and the second magnesia guide post 2 is 7.3mm-7.4mm, described to be used for liquid metals sodium after filling magnesium powder
Multiple spot idol heating element diameter after the draw in hot test circuit is reduced into 6.7mm.
Insulation and pressure resistance between the detection resistance value and lead and protection metal pipe 9 and temperature element 8 of above-mentioned steps reach
It is qualification to JB/T2379-2016 " tubular metal electric heating element " standard requirements.
From the above technical scheme, this application provides a kind of multiple spot for liquid metals sodium hot test circuit is even
Heating element, comprising: 6, six the first magnesia guide post 1, the second magnesia guide post 2, double helix heating wire 4, steel strand wires thermometrics
Element 8, protection metal pipe 9, the first magnesia guide post 1 are fixedly connected with the second magnesia guide post 2, first oxygen
The outer surface of the outer surface and the second magnesia guide post 2 of changing magnesium guide post 1 is all uniformly arranged there are six mounting groove 7, and described six
A temperature element 8 is respectively arranged in six mounting grooves 7, and six temperature elements 8 are installed to the depth of the mounting groove 7
Degree is depending on the size of test requirements document, therefore, can integrate six temperature measuring points from different depth and orientation.Double helix heating wire
4 are arranged in the first magnesia guide post 1, and the steel strand wires 6 are arranged in the second magnesia guide post 2, and described six
Temperature element 8 is arranged on the first magnesia guide post 1 and the second magnesia guide post 2, by filling magnesium powder and the draw
After processing, the diameter of the multiple spot idol heating element for liquid metals sodium hot test circuit of finished product is 6.7mm, i.e., in diameter
It is significantly simple to be integrated with six temperature measuring points on the multiple spot idol heating element for liquid metals sodium hot test circuit of 6.7mm
Change the original complicated test structure type to take up space again, improves the accuracy of test result.
The above is only the specific embodiments of the application, it is noted that those skilled in the art are come
It says, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as
The protection scope of the application.
Claims (4)
1. a kind of multiple spot idol heating element for liquid metals sodium hot test circuit, which is characterized in that described to be used for liquid
The multiple spot idol heating element in metallic sodium hot test circuit includes the first magnesia guide post (1), the second magnesia guide post (2), double
Spiral heating wire (4), steel strand wires (6), six temperature elements (8), protection metal pipe (9), in which:
The diameter of the first magnesia guide post (1) is identical as the diameter of the second magnesia guide post (2), first oxidation
Magnesium guide post (1) is fixedly connected with the second magnesia guide post (2)；
A heating wire installation through-hole (3) is provided on the first magnesia guide post (1), the double helix heating wire (4) sets
It is placed in the heating wire installation through-hole (3)；
On the second magnesia guide post (2) there are two settings steel strand wires installation through-hole (5), the one of two steel strand wires (6)
End is connect with the both ends of the double helix heating wire (4) respectively, and the other end of two steel strand wires (6) is each passed through two institutes
State steel strand wires installation through-hole (5)；
The outer surface of the first magnesia guide post (1) and the outer surface of the second magnesia guide post (2) are all evenly arranged with
Six mounting grooves (7), six mounting grooves (7) of the first magnesia guide post (1) outer surface and second magnesia
Six mounting grooves (7) of guide post (2) outer surface correspond, and six temperature elements (8) are respectively arranged at described six
In a mounting groove (7), one end of six temperature elements (8) is respectively positioned in the first magnesia guide post (1), and described six
The other end of temperature element (8) both passes through the second magnesia guide post (2)；
The diameter of the protection metal pipe (9) is greater than the diameter of the first magnesia guide post (1), the protection metal pipe (9)
For hollow structure；
The protection metal pipe (9) is sheathed on the first magnesia guide post (1) and the second magnesia guide post (2)；
The first magnesia guide post (1) and the second magnesia guide post (2) and the protection metal pipe (9) have spacing.
2. being used for the multiple spot idol heating element in liquid metals sodium hot test circuit as described in claim 1, which is characterized in that
The multiple spot idol heating element for liquid metals sodium hot test circuit further includes magnesia powder (10), the magnesia powder
(10) seam being set between the protection metal pipe (9) and the double helix heating wire (4), six temperature elements (8)
In gap；
The magnesia powder (10) is set to the first magnesia guide post (1) and the double helix heating wire (4), six described
In gap between temperature element (8)；
The magnesia powder (10) is set to the second magnesia guide post (2) and the steel strand wires (6), six thermometric members
In gap between part (8).
3. being used for the multiple spot idol heating element in liquid metals sodium hot test circuit as described in claim 1, which is characterized in that
The multiple spot idol heating element for liquid metals sodium hot test circuit further includes six roots of sensation temperature element lead-out wire (12), two
Root steel strand wires lead-out wire (13) and a porcelain head (14), in which:
One end of the six roots of sensation temperature element lead-out wire (12) passes through second oxidation with six temperature elements (8) respectively
One end of magnesium guide post (2) connects, and the other end of the six roots of sensation temperature element lead-out wire (12) both passes through the porcelain head (14)；
It is logical that one end of two steel strand wires lead-out wires (13) passes through two steel strand wires installations with the steel strand wires (6) respectively
The one end in hole (5) connects, and the other end of two steel strand wires lead-out wires (13) both passes through the porcelain head (14).
4. being used for the multiple spot idol heating element in liquid metals sodium hot test circuit as described in claim 1, which is characterized in that
The temperature element (8) is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518111.6A CN109443579A (en) | 2018-12-12 | 2018-12-12 | A kind of multiple spot idol heating element for liquid metals sodium hot test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518111.6A CN109443579A (en) | 2018-12-12 | 2018-12-12 | A kind of multiple spot idol heating element for liquid metals sodium hot test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443579A true CN109443579A (en) | 2019-03-08 |
Family
ID=65557845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811518111.6A Pending CN109443579A (en) | 2018-12-12 | 2018-12-12 | A kind of multiple spot idol heating element for liquid metals sodium hot test circuit |
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| Country | Link |
|---|---|
| CN (1) | CN109443579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017525A (en) * | 2019-05-23 | 2019-07-16 | 河北秦暖新能源科技有限公司 | A kind of accumulated electric heater of heat storage pouring molding |
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| CN103292861A (en) * | 2013-06-18 | 2013-09-11 | 重庆材料研究院有限公司 | Manufacturing method of all-closed pressure environment liquid level meter |
| US20170052053A1 (en) * | 2013-12-03 | 2017-02-23 | Okazaki Manufacturing Company | Water level sensor |
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|---|---|---|---|---|
| CN2446744Y (en) * | 2000-09-12 | 2001-09-05 | 浙江春晖集团公司 | Armoured electric heating element with built-in thermocouple |
| CN1487773A (en) * | 2003-07-25 | 2004-04-07 | 浙江久立耐火电缆有限公司 | Integral heating and thermometering cable |
| CN101778500A (en) * | 2009-01-09 | 2010-07-14 | 绍兴春晖自动化仪表有限公司 | Self-temperature-control heating integrated armored electric heater |
| CN103237374A (en) * | 2013-04-27 | 2013-08-07 | 重庆川仪十七厂有限公司 | Heating body structure of electric heater of civilian nuclear power plant voltage stabilizer |
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| CN110017525A (en) * | 2019-05-23 | 2019-07-16 | 河北秦暖新能源科技有限公司 | A kind of accumulated electric heater of heat storage pouring molding |
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