CN209280090U - A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating - Google Patents
A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating Download PDFInfo
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- CN209280090U CN209280090U CN201822255378.2U CN201822255378U CN209280090U CN 209280090 U CN209280090 U CN 209280090U CN 201822255378 U CN201822255378 U CN 201822255378U CN 209280090 U CN209280090 U CN 209280090U
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- thermocouple
- heating
- armoured thermocouple
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- heated
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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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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating, including protection sleeve pipe, heating coil, armoured thermocouple, it is heated armoured thermocouple, heating coil, armoured thermocouple, armoured thermocouple is heated to be placed in pressure-bearing casing, armoured thermocouple is located at the bottom of pressure-bearing casing, setting is heated armoured thermocouple in heating coil, it is described to be heated the metal that armoured thermocouple is filling magnetic conduction in the casing of armoured thermocouple hot end, or the metal block of one section of magnetic conduction is welded in hot end casing housing, or armoured thermocouple itself is the thermocouple of magnetic conduction, armoured thermocouple and heating armoured thermocouple constitute the thermocouple measurement pair of measurement liquid level.
Description
Technical field
The utility model relates to a kind of heating type liquid level sensor for thermocouple, for liquid level in container or liquid storage tank
The measurement of (liquid level).
Background technique
The pressure vessel of existing pressurized-water reactor nuclear power plant and high temperature, high-pressure boiler or this kind of height of liquid storage tank in thermal power plant can
The liquid level sensor that uses of occasion required by property, mostly use greatly differential pressure type level gauge, float level meter, magnetic fluid level gauge and
The liquidometers such as transparent glass tube sheet, some in these liquidometers belong to indirect measurement, some reliabilities are not high, some service lifes
It is shorter.And the reliability of level gauging is directly related to the safety and the person of production equipment in the occasion of certain high reliability requests
Safety, so there is an urgent need to a kind of equipment that can directly measure pressure resistant vessel liquid level of high reliability.In addition, existing hot end adds
Hot type liquid level sensor for thermocouple or subsection heating type liquid level sensor for thermocouple, due to using Resistant heating, sensing element
Volume is big, and there is response time longer disadvantages.
Summary of the invention
Technical problem to be solved in the utility model is to provide a seed nucleus to overcome the above-mentioned insufficient of the prior art
Power station reactor core level sensor can directly, accurately and quickly monitor the liquid level of container inner medium, be more suitable for
It is used in the occasion of nuclear field and high reliability request.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of high-frequency induction eddy heating for heating is more
Point thermocouple level sensor, it is characterised in that: including protection sleeve pipe, heating coil, armoured thermocouple, be heated armouring heat
Galvanic couple, heating coil, armoured thermocouple are heated armoured thermocouple and are placed in protection sleeve pipe, and armoured thermocouple is located at protection
The bottom of casing, the interior setting of heating coil are heated armoured thermocouple, and the armoured thermocouple that is heated is armoured thermocouple heat
The metal of filling magnetic conduction in end cap pipe, or be in the metal block, or armoured thermocouple itself that hot end casing housing welds one section of magnetic conduction
The thermocouple of magnetic conduction, armoured thermocouple and heating armoured thermocouple constitute the thermocouple measurement pair of measurement liquid level.
Preferably, the above-mentioned armoured thermocouple that is heated has two or more.
Preferably, above-mentioned protection sleeve pipe has two layers, wherein one layer is the magnetic conductive metal for being provided with notch, another layer is non-magnetic
Metal, protection sleeve pipe upper end mounting flange has magnetic conduction and non-magnetic double-level-metal to be composed, and there be consolidating for magnetic conduction in lower end
Fixed board.Protection sleeve pipe has the function of electro-magnetic screen function and liquid fluctuating decaying.
Preferably, above-mentioned inside pipe casing has non-magnetic support plate to support.
Preferably, above-mentioned heating coil surface plating high-temperature insulation silver.
The multipoint thermocouple level sensor of above-mentioned high-frequency induction eddy heating for heating is using vapour/gas and liquid in heat transfer property
The notable difference of aspect, by means of the difference for the thermoelectrical potential E that the armoured thermocouple being heated and the armoured thermocouple not heated are surveyed
The high level of score value Δ E differentiates that its hot end is among liquid with low level, is among vapour/gas.When liquid soaks
When the hot end for the armoured thermocouple not being heated, thermoelectrical potential difference value Δ E is low level, when liquid is detached from the armouring being heated
When the hot end of thermocouple, thermoelectrical potential difference value Δ E is high level.
The multipoint thermocouple level sensor axial position of above-mentioned high-frequency induction eddy heating for heating is furnished with 2 or more and is heated
Armoured thermocouple, it is poor that the distance between hot end represents mutual liquid level, by means of physical packaging position, by detecting
The device heat outputting potential low level quantity of difference value Δ E may know that liquid level.
The utility model passes through the hot end of high-frequency induction eddy heating for heating armoured thermocouple so that non-sensitive part volume very little,
Reach the variation of quickly sensitive liquid level, fast response time, the production of level sensor is also more simple.
Detailed description of the invention
Fig. 1 is a kind of structure of the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating of the utility model embodiment
Schematic diagram.
Fig. 2 is a kind of measurement of the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating of the utility model embodiment
Effect picture.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
As shown in Figure 1, a kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating, including coil 6, coil 6
It inside include 3 armoured thermocouples 5, the metal such as nickel of filling magnetic conduction in the hot end casing of armoured thermocouple, or covered in hot end
The metal block such as nickel, or armoured thermocouple of pipe housing one section of magnetic conduction of weldering itself is the thermocouple such as K-type thermocouple of magnetic conduction, separately
1 armoured thermocouple 9 is non-magnetic armoured thermocouple such as T-type thermocouple, is located at the bottom end of detector.
Plating high-temperature insulation is silver-colored outside above-mentioned coil 6, is cased with double layer of metal protection sleeve pipe on the outside of coil 6, wherein one layer is to be provided with
The magnetic conductive metal 4 of notch, another layer are non-magnetic metal 3, and the mounting flange 2 of protection sleeve pipe upper end by magnetic conduction and is not led
The double-level-metal of magnetic is composed, and inside pipe casing has non-magnetic support plate 7, and there are the metal fixing plate 8 of magnetic conduction, top in lower end
It is feedthrough connector 1.
The effect of above-mentioned double layer of metal protection sleeve pipe, first is that the support of detector, second is that being used to shield electromagnetic field, third is that liquid
The dynamic attenuator of surface wave.
When coil 6 is powered by high frequency electric source, under the action of the alternating magnetic field that 6 induced inside of coil generates, 6 in coil
The heat that the hot end of three armoured thermocouples 5 is vortexed generation quickly heats, and the heat of that 1 non-magnetic armoured thermocouple 9
End is not heated, and what is measured is the temperature of surrounding medium, is the reference point of liquid level planar survey.
In this implementation, coil 6 is coiled into 60 circles, is axially uniformly distributed, and includes 2 K-type armoured thermocouples 5 in coil,
Metallic nickel is filled in the casing of hot end, another 1 is T-type armoured thermocouple 9, is located at the bottom end of detector;It is silver-plated in high-temperature insulation
The outside of lead loop is cased with two layers of protection sleeve pipe, wherein one layer is the 2Cr13 stainless steel sleeve pipe 4 for being provided with notch, another layer is
316L stainless steel sleeve pipe 3, the mounting flange 2 of protection sleeve pipe upper end, is composed of 2Cr13 stainless steel and 316L stainless steel.
There is the stainless steel bracing plate 7 of 316L inside protection sleeve pipe, there is the fixed plate 8 of 2Cr13 stainless steel in lower end, and top is 14 cores
Feedthrough connector 1, coil 6, armoured thermocouple 5,8 pass through 14 core lead connectors 1 and external electrical connections.
The multipoint thermocouple level sensor of the present embodiment high-frequency induction eddy heating for heating is actually used, and is achieved expected
Effect, Δ T-t curve as shown in Figure 2 show that slope of a curve is compared with resistance when in water level rising, especially in water level decreasing
Having for silk heating significantly becomes larger, and shows that the speed of sensitive water level has apparent quickening.
Claims (5)
1. a kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating, it is characterised in that: including protection sleeve pipe, add
Heat coil, armoured thermocouple are heated armoured thermocouple, and heating coil, armoured thermocouple are heated armoured thermocouple and are placed in
In pressure-bearing casing, armoured thermocouple is located at the bottom of pressure-bearing casing, and setting is heated armoured thermocouple, the quilt in heating coil
The metal that armoured thermocouple is filling magnetic conduction in the casing of armoured thermocouple hot end is heated, or welds one section of magnetic conduction in hot end casing housing
Metal block or armoured thermocouple itself be magnetic conduction thermocouple, armoured thermocouple and heating armoured thermocouple constitute measurement liquid
The thermocouple measurement pair of position.
2. the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating according to claim 1, it is characterised in that:
The armoured thermocouple that is heated is two or more.
3. the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating according to claim 1, it is characterised in that:
The protection sleeve pipe has two layers, wherein one layer is the magnetic conductive metal for being provided with notch, another layer is non-magnetic metal, protection sleeve pipe
Upper end mounting flange has magnetic conduction and non-magnetic double-level-metal to be composed, and there is the fixed plate of magnetic conduction in lower end.
4. the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating according to claim 1, it is characterised in that:
There is non-magnetic support plate to support inside the protection sleeve pipe.
5. the multipoint thermocouple level sensor of high-frequency induction eddy heating for heating according to claim 3, it is characterised in that:
The heating coil surface plating high-temperature insulation silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255378.2U CN209280090U (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255378.2U CN209280090U (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating |
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| Publication Number | Publication Date |
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| CN209280090U true CN209280090U (en) | 2019-08-20 |
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| CN201822255378.2U Active CN209280090U (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520588A (en) * | 2018-12-29 | 2019-03-26 | 宁波奥崎自动化仪表设备有限公司 | A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating |
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2018
- 2018-12-29 CN CN201822255378.2U patent/CN209280090U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520588A (en) * | 2018-12-29 | 2019-03-26 | 宁波奥崎自动化仪表设备有限公司 | A kind of multipoint thermocouple level sensor of high-frequency induction eddy heating for heating |
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| GR01 | Patent grant | ||
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Address after: Workshop 32, No.68, Yuhai East Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Patentee after: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. Address before: Jiangbei District, Zhejiang city of Ningbo Province Dongsheng Street 315020 No. 52 Patentee before: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. |