CN109520589A - A kind of multipoint thermocouple level sensor - Google Patents
A kind of multipoint thermocouple level sensor Download PDFInfo
- Publication number
- CN109520589A CN109520589A CN201811641005.7A CN201811641005A CN109520589A CN 109520589 A CN109520589 A CN 109520589A CN 201811641005 A CN201811641005 A CN 201811641005A CN 109520589 A CN109520589 A CN 109520589A
- Authority
- CN
- China
- Prior art keywords
- thermocouple
- armoured thermocouple
- armoured
- graphite
- level sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 23
- 239000010439 graphite Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 16
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of multipoint thermocouple level sensor, including electromagnetic shielding assembly, heating wires, armouring measure component；The armouring measurement component includes metal tube, armoured thermocouple, is heated armoured thermocouple, include armoured thermocouple in metal tube and is heated armoured thermocouple, each armoured thermocouple measurement end is surrounded by one section of graphite, aluminum oxide is full of between the graphite section of armoured thermocouple, and metal tube, aluminum oxide, graphite, armoured thermocouple carry out armouring again；Heating wires are attached in metal pipe outer wall, and in addition to the armoured thermocouple of bottom end one, the heating wires outside remaining armoured thermocouple graphite section on corresponding metal tube are coiled into coil, and armoured thermocouple and heating armoured thermocouple constitute the thermocouple measurement pair of measurement liquid level.
Description
Technical field
The present invention relates to a kind of heating type liquid level sensor for thermocouple, for liquid level liquid level in container or liquid storage tank
Measurement.
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
The technical problem to be solved by the present invention is to provide a kind of multiple spot heat to overcome the above-mentioned insufficient of the prior art
Galvanic couple level sensor can directly, accurately and quickly monitor the liquid level of container inner medium, and being more suitable for can in nuclear field and height
It is used in the occasion that property requires.
The technical scheme of the invention to solve the technical problem is:
A kind of multipoint thermocouple level sensor, including electromagnetic shielding assembly, heating wires, armouring measure component；The armour
Dress measurement component includes metal tube, armoured thermocouple, is heated armoured thermocouple, includes armoured thermocouple in metal tube and is added
Hot armoured thermocouple, each armoured thermocouple measurement end are surrounded by one section of graphite, and three are full of between the graphite section of armoured thermocouple
Al 2 O, and metal tube, aluminum oxide, graphite, armoured thermocouple carry out armouring again；Heating wires are attached to outside metal tube
On wall, in addition to the armoured thermocouple of bottom end one, heating wires outside remaining armoured thermocouple graphite section on corresponding metal tube around
At coil, armoured thermocouple and heating armoured thermocouple constitute the thermocouple measurement pair for measuring liquid level.
Preferably, above-mentioned electromagnetic shielding assembly 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 have magnetic conduction and non-magnetic double-level-metal to be composed, and lower end is led
The fixed plate of magnetic.Protection metal pipe has the function of electro-magnetic screen function and liquid fluctuating decaying.
Preferably, the above-mentioned armoured thermocouple that is heated has two or more.
Preferably, above-mentioned heating coil is the coil that high-temperature insulation silver-jacketed wire is coiled into, and can reduce resistance in this way, more preferably
Ground heating., top is feedthrough connector.
Preferably, above-mentioned inside pipe casing has non-magnetic support plate to support, by support plate support armoured thermocouple and by
Heat armoured thermocouple.
Preferably, the graphite section of above-mentioned bottom end armoured thermocouple is outer is supported by support plate, and graphite and shielding support plate play
Electromagnetic shielding and conductive force, make the temperature for not heating armoured thermocouple accurately reflect the temperature of surrounding medium.
Above-mentioned multipoint thermocouple level sensor utilizes the notable difference of vapour/gas and liquid in terms of heat transfer property, borrows
Help the armoured thermocouple being heated and the high level of the difference value Δ E of thermoelectrical potential E that the armoured thermocouple that does not heat is surveyed with
Low level differentiates that its hot end is among liquid, is among vapour/gas.When the liquid-immersed armouring thermoelectricity being heated
When the hot end of idol, thermoelectrical potential difference value Δ E is low level, when liquid is detached from the hot end for the armoured thermocouple being heated, heat
Potential difference value Δ E is high level.
Above-mentioned multipoint thermocouple level sensor, detector axial position are furnished with several armoured thermocouples being heated,
It is poor that the distance between hot end represents mutual liquid level, by means of physical packaging position, by detector heat outputting potential difference
The low level quantity of score value Δ E may know that liquid level.
Since graphite is good thermally conductive and conducting medium, the density and specific heat of graphite are smaller, can be vortexed by high-frequency induction
It quickly heats and heats up, to improve the speed of the medium heat transfer outside casing, that is, improve the response speed of level gauging.
Multipoint thermocouple level sensor of the present invention is due to using high-frequency induction eddy heating for heating graphite, fast, the surface temperature with heating speed
The features such as degree height and thermal efficiency height, thus in addition to measurement is safe and reliable, the fast response time of sensor sensing liquid level.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of multipoint thermocouple level sensor of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, a kind of multipoint thermocouple level sensor, including electromagnetic shielding assembly, heating wires, armouring are surveyed
Measure component and 14 core signal connectors 1.
Armouring measurement component includes copper pipe 5, armouring T-type thermocouple, includes 3 armouring T-type thermocouples 9 and armouring in copper pipe
Thermocouple 12, each armoured thermocouple measurement end are surrounded by one section of graphite 8, and three oxygen are full of between the graphite section 8 of armoured thermocouple 9
Change two aluminium 7, and copper pipe, aluminum oxide 7, graphite 8, armouring T-type thermocouple carry out armouring again.
Heating wires 6 are attached on 5 outer wall of copper pipe, in addition to the armoured thermocouple 12 of the bottom end of detector one, remaining 3 armouring
Heating wires 6 are coiled into coil on corresponding copper pipe outside 95 graphite section 8 of thermocouple, and such heating wires 6 can be at coil when being powered
Magnetic field is generated, is absorbed by graphite and conduct magnetic field heats armoured thermocouple 9.
High-temperature insulation silver is also plated outside above-mentioned heating wires 6.
The outside of above-mentioned heating wires 6, is cased with electromagnetic shielding assembly comprising two layers of protection metal sleeve 3 and 4,
Middle sleeve 4 is the 2Cr13 stainless steel for being provided with notch, and upper end is provided with 3 ventholes, and 3 upper end of casing is also provided with 3 ventholes, is
316L stainless steel, the support plate 11 for shielding mounting flange 2 and lower end are composed of 2Cr13 stainless steel and 316L stainless steel,
Inner support panels 10 are non-conductive, non-magnetic PEEK(polyether-ether-ketone) material, top is feedthrough connector 1.
The graphite section of the armoured thermocouple 12 of above-mentioned bottom end is outer to be supported by support plate 11.
Above-mentioned heating wires 6, armoured thermocouple 9,12 pass through 14 core lead connectors 1 and external electrical connections.
Above-mentioned electromagnetic shielding assembly double layer of metal protection sleeve pipe, first is that the support of detector, second is that being used to shield electricity
Magnetic field, third is that the attenuator of liquid fluctuating.
When heating wires 6 are powered by high frequency electric source, generated in the conducting wire induced inside of corresponding three armoured thermocouples 9
Alternating magnetic field under the action of, the heat that the hot end of corresponding three armoured thermocouples 9 is vortexed generation quickly heats, and that prop up
The hot end of non-magnetic armoured thermocouple 12 is not heated, and what is measured is the temperature of surrounding medium, is the reference of level gauging
Point.
Claims (5)
1. a kind of multipoint thermocouple level sensor, it is characterised in that: surveyed including electromagnetic shielding assembly, heating wires, armouring
Measure component；The armouring measurement component includes metal tube, armoured thermocouple, is heated armoured thermocouple, includes armour in metal tube
It fills thermocouple and is heated armoured thermocouple, each armoured thermocouple measurement end is surrounded by one section of graphite, the stone of armoured thermocouple
Aluminum oxide is full of between black section, and metal tube, aluminum oxide, graphite, armoured thermocouple carry out armouring again；Heating is led
Line is attached in metal pipe outer wall, in addition to the armoured thermocouple of bottom end one, corresponding metal tube outside remaining armoured thermocouple graphite section
On heating wires be coiled into coil, armoured thermocouple and heating armoured thermocouple constitute the thermocouple measurement pair of measurement liquid level.
2. multipoint thermocouple level sensor according to claim 1, it is characterised in that: electromagnetic shielding assembly has two
Layer, wherein one layer be the magnetic conductive metal for being provided with notch, another layer is non-magnetic metal, protection sleeve pipe upper end mounting flange,
There are magnetic conduction and non-magnetic double-level-metal to be composed, there is the fixed plate of magnetic conduction in lower end.
3. multipoint thermocouple level sensor according to claim 1, it is characterised in that: it is described to be heated armouring thermoelectricity
Occasionally there are two or more.
4. multipoint thermocouple level sensor according to claim 1, it is characterised in that: the bottom end armoured thermocouple
Graphite section outer supported by support plate.
5. multipoint thermocouple level sensor according to claim 1, it is characterised in that: the electromagnetic shielding assembly
Inside pipe casing has non-magnetic support plate to support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641005.7A CN109520589A (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641005.7A CN109520589A (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520589A true CN109520589A (en) | 2019-03-26 |
Family
ID=65797438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811641005.7A Pending CN109520589A (en) | 2018-12-29 | 2018-12-29 | A kind of multipoint thermocouple level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323098A (en) * | 2020-02-28 | 2020-06-23 | 中广核研究院有限公司 | Sensor for measuring water level of reactor core |
| CN112274245A (en) * | 2020-11-26 | 2021-01-29 | 浙江伽奈维医疗科技有限公司 | A thermometric ablation needle with magnetic positioning and navigation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009162487A (en) * | 2007-12-28 | 2009-07-23 | Watty Corp | Induction heating type liquid level sensor |
| CN106500798A (en) * | 2016-12-16 | 2017-03-15 | 宁波奥崎自动化仪表设备有限公司 | A kind of section heating type multipoint thermocouple level sensor by heat-conducting block heat conduction |
| CN209214717U (en) * | 2018-12-29 | 2019-08-06 | 宁波奥崎自动化仪表设备有限公司 | A Multipoint Thermocouple Liquid Level Detector |
-
2018
- 2018-12-29 CN CN201811641005.7A patent/CN109520589A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009162487A (en) * | 2007-12-28 | 2009-07-23 | Watty Corp | Induction heating type liquid level sensor |
| CN106500798A (en) * | 2016-12-16 | 2017-03-15 | 宁波奥崎自动化仪表设备有限公司 | A kind of section heating type multipoint thermocouple level sensor by heat-conducting block heat conduction |
| CN209214717U (en) * | 2018-12-29 | 2019-08-06 | 宁波奥崎自动化仪表设备有限公司 | A Multipoint Thermocouple Liquid Level Detector |
Non-Patent Citations (1)
| Title |
|---|
| （日）石川敏功，（日）长冲通著；陆玉峻等译: "《新碳素工业 下》", 哈尔滨工业大学出版社, pages: 52 - 53 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323098A (en) * | 2020-02-28 | 2020-06-23 | 中广核研究院有限公司 | Sensor for measuring water level of reactor core |
| CN112274245A (en) * | 2020-11-26 | 2021-01-29 | 浙江伽奈维医疗科技有限公司 | A thermometric ablation needle with magnetic positioning and navigation |
| CN112274245B (en) * | 2020-11-26 | 2025-04-25 | 浙江伽奈维医疗科技有限公司 | A temperature-measuring ablation needle with magnetic positioning navigation |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Zhichao Inventor after: Li Liang Inventor after: Fan Jin Inventor after: Sun Jiong Inventor after: Zhu Chenluo Inventor after: Chen Zhen Inventor after: Zheng Dianjun Inventor after: Cha Meisheng Inventor after: Zhang Fu Inventor after: Huang Bingchen Inventor after: Huang Weijie Inventor before: Sun Zhichao Inventor before: Sun Jiong Inventor before: Zhu Chenluo Inventor before: Chen Zhen Inventor before: Zheng Dianjun Inventor before: Cha Meisheng |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Zhichao Inventor after: Zheng Dianjun Inventor after: Cha Meisheng Inventor after: Zhang Fu Inventor after: Li Liang Inventor after: Huang Bingchen Inventor after: Huang Weijie Inventor after: Fan Jin Inventor after: Sun Jiong Inventor after: Zhu Chenluo Inventor after: Chen Zhen Inventor before: Sun Zhichao Inventor before: Li Liang Inventor before: Fan Jin Inventor before: Sun Jiong Inventor before: Zhu Chenluo Inventor before: Chen Zhen Inventor before: Zheng Dianjun Inventor before: Cha Meisheng Inventor before: Zhang Fu Inventor before: Huang Bingchen Inventor before: Huang Weijie |
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| CB02 | Change of applicant information |
Address after: Workshop 32, No.68, Yuhai East Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Applicant after: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. Address before: Jiangbei District, Zhejiang city of Ningbo Province Dongsheng Street 315020 No. 52 Applicant before: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. |
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