CN109443580A - A kind of multi-measuring point temperature sensor - Google Patents
A kind of multi-measuring point temperature sensor Download PDFInfo
- Publication number
- CN109443580A CN109443580A CN201811556723.4A CN201811556723A CN109443580A CN 109443580 A CN109443580 A CN 109443580A CN 201811556723 A CN201811556723 A CN 201811556723A CN 109443580 A CN109443580 A CN 109443580A
- Authority
- CN
- China
- Prior art keywords
- thermo wires
- measuring point
- temperature sensor
- metal armor
- armor layers
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 2
- 239000010931 gold Substances 0.000 claims 2
- 229910052737 gold Inorganic materials 0.000 claims 2
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012774 insulation material Substances 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000000395 magnesium oxide Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of multi-measuring point temperature sensors, including metal armor layers, the internal order of the metal armor layers arranges more thermo wires, it is characterized in that, it is isolated between the more thermo wires, between thermo wires and metal armor layers by alumina insulating layer, the more thermo wires are axially formed multiple temperature measuring points in the metal armor layers, further, the more thermo wires include a positive thermo wires and the cathode thermo wires that matches with the temperature measuring point quantity, and a cathode thermo wires is corresponding on the position of each temperature measuring point and the positive thermo wires carries out weldering company.The beneficial effects of the present invention are: can be overcome using the Insulation stopping of aluminium oxide production thermocouple since Insulation Material leakage caused by armor breakage, insulation performance reduce, thermocouple detects failure；Further, thermo wires arrangement is carried out in the way of shared anode, the quantity of temperature measuring point can be further increased in the armor of identical bore, while keeping the structure of thermocouple and wiring more simple.
Description
Technical field
The present invention relates to temperature element technical fields, more particularly to a kind of multi-measuring point temperature sensor.
Background technique
With chemical industry, the development of petroleum industry, the technology controlling and process of production process is increasingly refined, especially to production
The control of temperature of reactor used in process generally requires to monitor click-through trip temperatures multiple in reactor.At present on the market
Most common temperature-detecting device is thermocouple, it is combined by the conductor of two kinds of heterogeneities or semiconductor both ends forms one and close
Circuit is closed, the binding site at both ends is respectively measurement end and the reference end of thermocouple will when the temperature difference of two basic change point
Thermocurrent is generated in the loop.If the measurement end of thermocouple and reference end are there are the temperature difference, display instrument will indicate thermoelectricity
Temperature value corresponding to the thermoelectrical potential occasionally generated.The thermoelectrical potential of thermocouple will measure end temperature with side and increase and increase, it big
Small related with the temperature at thermocouple material and both ends, unrelated with the length and diameter size of thermocouple wire.
In the prior art if you need to be monitored simultaneously to the multi-point temperature in reactor, usually there are two types of modes: one is
Using multiple single thermocouples, i.e. the corresponding temperature measuring point of a thermocouple is made of multiple thermocouples.The drawbacks of this mode
Be occupy installation space it is big, while increase installation workload and distribution difficulty.By taking EO reactor as an example, its general temperature measuring point
At 30 or more, if opening up 30 or more holes on EO reactor, 30 or more casings is installed in reactor, are bound to
The structure that will lead to reactor is extremely complex, and 30 or more flange connections, and leakage point can undoubtedly increase, reactor
Integral strength also will receive influence.Another mode is the current common multipoint thermocouple both at home and abroad using multipoint thermocouple
Thermometric product is usually that multiple armored temperature measuring cores are encapsulated in a protection metal pipe, although this mode spatially has one
It is fixed to improve, but thermometric core can not be with physical contact between media, and the temperature-responsive time is longer, and measurement result often has thermally conductive mistake
Difference.Meanwhile the Insulation stopping of these multipoint thermocouples all uses magnesia, it is made to be not applied for EO reactor, because of EO
During the work time, the armor of thermocouple is easily made armor damaged to reactor by air-flow erosion and catalyst friction, and armour
Layer is filled once damaged, magnesia leakage reacts with vapor will lead to that the generation of EO catalyst is hardened, loses activity, Jin Erying
Reaction gas flow is rung, reaction temperature is caused to be distorted；If magnesia leakage is serious, the insulating properties of thermocouple will be substantially reduced, even
It is not available.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of multi-measuring point temperature sensor, by more thermoelectricity
Thermo wires armouring forms multiple temperature measuring points in a protection sleeve pipe, while using Insulation stopping of the aluminium oxide as thermocouple,
Overcome above-mentioned the deficiencies in the prior art.
In view of the above-mentioned problems, one technical scheme adopted by the invention is that: a kind of multi-measuring point temperature sensor is provided, including
Metal armor layers, the internal order of the metal armor layers arrange more thermo wires, between the more thermo wires, thermo wires and metal armour
It fills and is isolated between layer by alumina insulating layer, the more thermo wires are axially formed multiple thermometrics in the metal armor layers
Point.
Preferably, the more thermo wires include the positive thermo wires and cathode thermo wires that quantity matches, each temperature measuring point
Position on be corresponding with a positive thermo wires and a cathode thermo wires carries out weldering company.
Preferably, the more thermo wires are radially circumferentially evenly distributed in metal armor layers.
Preferably, the more thermo wires include an anode thermo wires and the cathode idol to match with the temperature measuring point quantity
Thread, it is corresponding with a cathode thermo wires on the position of each temperature measuring point and the positive thermo wires carries out weldering company.
Preferably, the more cathode thermo wires are circumferentially evenly distributed in metal armor layers, and the anode thermo wires is located at
The center location of the circumference.
Preferably, the quantity of the temperature measuring point is set as 5~10.
Preferably, the multiple temperature measuring point is uniformly distributed along the axial direction of the metal armor layers, the two neighboring thermometric
The distance between point >=10 centimetres.
Preferably, total length≤30 meter of the metal armor layers.
Preferably, the purity of the alumina insulating layer is not less than 99.97%.
Preferably, the metal armor layers are made of high rigidity and the good stainless steel of ductility, the metal armor layers
Thickness be not less than 0.8mm.
The beneficial effects of the present invention are: 1, using aluminium oxide production thermocouple insulation filling material, can increase significantly
The wear-resisting property of heat-flash galvanic couple overcomes insulating materials leakage, insulation as caused by armor breakage in the prior art well
Situations such as reduced performance, thermocouple detection failure, simultaneously because aluminium oxide performance is stablized, it can be adapted for high temperature, vaporization, corruption
A variety of environment such as erosion, oxidation, reproducibility use, and application range is wider；2, by the way that more thermo wires armourings are formed more surveys together
Point type thermocouple, structure is simple, easy to use, can greatly reduce the land occupation position of thermocouple in the reactor；3, further
, thermo wires arrangement is carried out in the way of shared anode, the number of temperature measuring point can be further increased in the armor of identical bore
Amount, while keeping the structure of thermocouple and wiring more simple.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the view in transverse section of Fig. 1；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 4 is the view in transverse section of Fig. 3.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment 1
Fig. 1~2 are please referred to, the embodiment of the present invention includes:
The inside of a kind of multi-measuring point temperature sensor, including metal armor layers 1, the metal armor layers 1 is circumferentially uniform
Ten thermo wires, respectively five positive thermo wires 21~25 and five cathode thermo wires 31~35 are arranged, described ten thermo wires are described
Five temperature measuring points 41~45 are sequentially formed along axial direction in metal armor layers 1, successively there is a positive thermo wires on each temperature measuring point
Connect with a cathode thermo wires weldering, five temperature measuring points 41~45 are uniformly distributed along the axial direction of metal armor layers 1, described ten idols
It is isolated between silk, between thermo wires and metal armor layers 1 by alumina insulating layer 5, the purity of the alumina insulating layer is
99.99%, the metal armor layers 1 are made of high rigidity and the good stainless steel of ductility, the thickness of the metal armor layers 1
For 0.8mm.
Embodiment 2
Fig. 3~4 are please referred to, the embodiment of the present invention includes:
The inside of a kind of multi-measuring point temperature sensor, including metal armor layers 1, the metal armor layers 1 is circumferentially uniform
Arrange five cathode thermo wires 31~35, the center location of the circumference is arranged a positive thermo wires 2, in the metal armor layers 1
It is successively uniformly arranged five temperature measuring points 41~45 along axial direction, there is a cathode thermo wires and the positive thermo wires 2 on each temperature measuring point
Weldering connects, and is isolated between the six roots of sensation thermo wires, between thermo wires and metal armor layers 1 by alumina insulating layer 5, the aluminium oxide is exhausted
The purity of edge layer is 99.99%, and the metal armor layers 1 are made of high rigidity and the good stainless steel of ductility, the metal
Armor 1 with a thickness of 0.8mm.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of multi-measuring point temperature sensor, including metal armor layers, the internal order of the metal armor layers arranges more idols
Silk, which is characterized in that it is isolated between the more thermo wires, between thermo wires and metal armor layers by alumina insulating layer, it is described
More thermo wires are axially formed multiple temperature measuring points in the metal armor layers.
2. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the more thermo wires include thermometric
The positive thermo wires and cathode thermo wires that point quantity matches are corresponding with a positive thermo wires and one on the position of each temperature measuring point
Cathode thermo wires carries out weldering company.
3. a kind of multi-measuring point temperature sensor according to claim 2, which is characterized in that the more thermo wires are in the gold
Belong to circumferentially evenly distributed in armor.
4. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the more thermo wires include one
Positive thermo wires and the more cathode thermo wires to match with the temperature measuring point quantity are corresponding with one on the position of each temperature measuring point
Root cathode thermo wires and the positive thermo wires carry out weldering company.
5. a kind of multi-measuring point temperature sensor according to claim 4, which is characterized in that the more cathode thermo wires are in gold
Belong to circumferentially evenly distributed in armor, the anode thermo wires is located at the center location of the circumference.
6. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the quantity of the temperature measuring point is arranged
It is 5~10.
7. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the multiple temperature measuring point is described in
The axial direction of metal armor layers is uniformly distributed, the distance between described two neighboring temperature measuring point >=10 centimetres.
8. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the overall length of the metal armor layers
≤ 30 meters of degree.
9. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the alumina insulating layer it is pure
Degree is not less than 99.5%.
10. a kind of multi-measuring point temperature sensor according to claim 1, which is characterized in that the metal armor layers use
The high rigidity and good stainless steel of ductility is made, the thickness of the metal armor layers is not less than 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556723.4A CN109443580A (en) | 2018-12-19 | 2018-12-19 | A kind of multi-measuring point temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556723.4A CN109443580A (en) | 2018-12-19 | 2018-12-19 | A kind of multi-measuring point temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443580A true CN109443580A (en) | 2019-03-08 |
Family
ID=65560358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811556723.4A Pending CN109443580A (en) | 2018-12-19 | 2018-12-19 | A kind of multi-measuring point temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443580A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595632A (en) * | 2019-08-26 | 2019-12-20 | 南京理工大学 | Three-dimensional temperature measuring device and method of integrated array type thermocouple bundle |
| CN110657896A (en) * | 2019-10-30 | 2020-01-07 | 深圳市捷汇多科技有限公司 | Multi-point thermocouple probe tube for parallel connection of negative pole cold ends of heating furnace |
| CN110686791A (en) * | 2019-11-08 | 2020-01-14 | 浙江泰索科技有限公司 | Ultra-long high-temperature and high-pressure resistant multi-point oil well temperature sensor and preparation method thereof |
| CN110836729A (en) * | 2019-12-09 | 2020-02-25 | 宁波富德能源有限公司 | Multi-measuring-point temperature sensor |
| CN111473895A (en) * | 2020-03-16 | 2020-07-31 | 吉林大学 | Touch sensor |
| CN113588109A (en) * | 2021-07-16 | 2021-11-02 | 蓝德能源科技股份有限公司 | Leak-proof adjustable multi-point thermocouple for reactor catalyst measuring point nozzle |
| CN113970379A (en) * | 2021-10-22 | 2022-01-25 | 湖南大学 | Novel thermocouple suitable for non-uniform temperature field measurement |
| US11815407B2 (en) * | 2019-09-03 | 2023-11-14 | Tokyo Electron Limited | Thermocouple structure, heat treatment apparatus, and method of manufacturing thermocouple structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595632A (en) * | 2019-08-26 | 2019-12-20 | 南京理工大学 | Three-dimensional temperature measuring device and method of integrated array type thermocouple bundle |
| US11815407B2 (en) * | 2019-09-03 | 2023-11-14 | Tokyo Electron Limited | Thermocouple structure, heat treatment apparatus, and method of manufacturing thermocouple structure |
| TWI837417B (en) * | 2019-09-03 | 2024-04-01 | 日商東京威力科創股份有限公司 | Thermocouple structure, heat treatment apparatus, and method of manufacturing thermocouple structure |
| CN110657896A (en) * | 2019-10-30 | 2020-01-07 | 深圳市捷汇多科技有限公司 | Multi-point thermocouple probe tube for parallel connection of negative pole cold ends of heating furnace |
| CN110686791A (en) * | 2019-11-08 | 2020-01-14 | 浙江泰索科技有限公司 | Ultra-long high-temperature and high-pressure resistant multi-point oil well temperature sensor and preparation method thereof |
| CN110836729A (en) * | 2019-12-09 | 2020-02-25 | 宁波富德能源有限公司 | Multi-measuring-point temperature sensor |
| CN111473895A (en) * | 2020-03-16 | 2020-07-31 | 吉林大学 | Touch sensor |
| CN111473895B (en) * | 2020-03-16 | 2021-06-29 | 吉林大学 | Touch sensor |
| CN113588109A (en) * | 2021-07-16 | 2021-11-02 | 蓝德能源科技股份有限公司 | Leak-proof adjustable multi-point thermocouple for reactor catalyst measuring point nozzle |
| CN113588109B (en) * | 2021-07-16 | 2024-03-12 | 蓝德能源科技股份有限公司 | Leakage-resistant adjustable multi-point thermocouple for reactor catalyst measuring point nozzle |
| CN113970379A (en) * | 2021-10-22 | 2022-01-25 | 湖南大学 | Novel thermocouple suitable for non-uniform temperature field measurement |
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Application publication date: 20190308 |