CN1858567A - Armored thermocouple for high temperature high pressure and hig flow speed and its using method - Google Patents
Armored thermocouple for high temperature high pressure and hig flow speed and its using method Download PDFInfo
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- CN1858567A CN1858567A CN200610051858.6A CN200610051858A CN1858567A CN 1858567 A CN1858567 A CN 1858567A CN 200610051858 A CN200610051858 A CN 200610051858A CN 1858567 A CN1858567 A CN 1858567A
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- 238000000034 method Methods 0.000 title claims description 6
- 230000001681 protective effect Effects 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
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Abstract
This invention relates to an armored thermocouple used in high temperature, high pressure and high flow speed including a shell, a thermocouple thread and a protect sleeve in a type of round table, the diameter of which bottom is 22-28mm, the diameter of the other bottom is 32-40mm and the hole diameter at the middle containing the thread is a bit larger than that of the thread. Advantge: the armored thermocouple can work under the following conditions normally for 105 hours: primary steam temperature: 610deg.C, flow speed: 100m/S, static pressure: 30MPa and creep tensile strength: 85MPa and can be used in the measurement to 1000MW and 600MW super critical steam power sets.
Description
Technical field
The present invention relates to a kind of armoured thermocouple, particularly relate to a kind of armoured thermocouple and using method thereof that high temperature high pressure and hig flow speed is used that be used for.
Background technology
Existing armoured thermocouple or title bushing type armoured thermal resistance; comprise housing, thermocouple wire and protective casing; thermocouple wire inserts in the head protection sleeve pipe of thermopair; temperature by the protective casing measurement environment; prevent that thermocouple wire is damaged, so the environment for use of thermopair mainly is subjected to the restriction of the adaptedness and the measuring condition of thermopair.Because at present the protective casing of thermopair commonly used adopts common material and structure, so it can only be used under common pressure, temperature and the flow velocity, and environment for use is limited, and range of application is very little.
Armoured thermocouple is owing to measure more accurate; its range of application more and more widely; particularly be applied in the measurement environment of various high pressure-temperature high flow rates; as be used for the high temperature high pressure and hig flow speed state that the ultra supercritical fired power generating unit uses and measure temperature down; the main pipeline that 1000MW ultra supercritical fired power generating unit and 600MW ultra supercritical fired power generating unit need be measured temperature with the parameter that outer protection tube meets with stresses is: 610 ℃ of main steam temperatures; flow velocity 100m/S; static pressure 30MPa, creep tensile strength 85MPa, the required life-span of armoured thermocouple will reach 105 hours (about 11.4).Under the operating mode of such ultra supercritical intensity; after thermopair has born the impulsive force and oscillatory load of outside static pressure, stable state fluid; when stress that portion produces has surpassed meeting with stresses of material itself within it; the protective casing of thermopair can damage; simultaneously its high speed that also can be subjected to measuring fluid is washed away and is worn and torn; therefore the protective casing of thermopair must possess the creep strength of enough high temperature high pressure and hig flow speeds, and thermal response time is short, can accurately measure temperature.
In general, the design of armoured thermocouple, armoured Pt thermal resistance protection protective casing, as reduce thermal response time, improve to measure quality, need to reduce the hot transmission loss in the measuring process, therefore the tube wall of protective casing is got over Bao Yuehao, then weaken the intensity of protective casing thereupon, cause protective casing to damage; Otherwise, for increasing the intensity of thermocouple protective casing, then need improve its thickness, will increase thermal response time, reduce and measure quality, so this is a pair of insoluble contradiction, also be key point of the present invention.
Summary of the invention
Technical matters to be solved by this invention is to overcome the above-mentioned defective of prior art and a kind of armoured thermocouple is provided, and makes it be issued to request for utilization in the high temperature high pressure and hig flow speed condition.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
The armoured thermocouple that high temperature high pressure and hig flow speed is used; comprise housing, thermocouple wire and protective casing; it is characterized in that: described protective casing is circular platform type; the bottom surface diameter of circular platform type is 22-28mm; another bottom surface diameter is 32-40mm, and the centre holds the diameter of the slightly larger in diameter of thermocouple wire in thermocouple wire.
The crucial part of above-mentioned thermopair is the protective casing structure of thermopair head; by analyzing the weak part of existing thermocouple protective casing structure; the present invention improves the shape and the structure of protective casing; and consider its employed high temperature high pressure and hig flow speed and high flow rate environment and the thermal response time of measuring the thermopair (thermal resistance) of temperature; Theoretical Calculation according to the mechanics of materials, fluid mechanics, oscillation intensity; reach safe handling; accurately measure, determined above-mentioned shape and structure, the size of protective casing with this.
The using method of above-mentioned thermopair, very important when being welded to pipeline with the groove angle of pipeline, be generally 45 degree.
Compared with prior art; the invention has the advantages that: thermopair is by the thermocouple protective casing of above-mentioned design; under the following conditions: when 610 ℃ of main steam temperatures, flow velocity 100m/S, static pressure 30MPa, creep tensile strength 85MPa; its life-span can reach 105 hours (about 11.4); and can correctly measure temperature, therefore meet the request for utilization under the high temperature high pressure and hig flow speed condition fully.
The armoured thermocouple that the high temperature high pressure and hig flow speed of the present invention's design is used, can be widely used in the thermometric under the various high temperature high pressure and hig flow speed conditions, temperature as the measurement steam under 1000MW ultra supercritical fired power generating unit and the 600MW ultra supercritical fired power generating unit working condition, it can accurately measure temperature, again enough intensity can be arranged, use and measuring accuracy reach required technical requirement, and be safe and reliable, can reach the serviceable life in the safe handling cycle.
Description of drawings
The structural representation of the armoured thermocouple that Fig. 1 uses for high temperature high pressure and hig flow speed of the present invention.
Fig. 2 is the structural representation of the protective casing of the embodiment of the invention.
The practical application figure of the armoured thermocouple that Fig. 3 uses for embodiment of the invention high temperature high pressure and hig flow speed.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1; the armoured thermocouple that high temperature high pressure and hig flow speed is used; it comprises terminal box 1; band stage clip connecting pipe 2; flexible joint 3; extension spray lance 4; protective casing 5 and thermocouple wire 7; thermocouple wire 7 stretches into by terminal box 1; band stage clip connecting pipe 2; flexible joint 3; extension spray lance 4; in the inner core that protective casing 5 is formed; described protective casing 5 is circular platform type; circular platform type is divided into two sections up and down; it is cylindrical that epimere becomes; the bottom surface diameter is 32-40mm, and hypomere is a circular platform type, and the bottom surface diameter of hypomere circular platform type is 22-28mm; the diameter of upper surface is 38-48mm; cylinder and round platform junction smooth transition, the centre holds the diameter of the slightly larger in diameter of thermocouple wire in thermocouple wire, sees Fig. 2 for details.
Above-mentioned circular platform type length can be decided according to the height of field of employment, and is changeable, is 100mm in the present embodiment.
During use, when the thermopair that above-mentioned high pressure-temperature high flow rate is used was welded to the place of use, in pipeline 8, the position of welding and the groove of welding can influence its usability, were preferably 45 degree, as shown in Figure 3.
Claims (3)
1, the armoured thermocouple used of high temperature high pressure and hig flow speed; comprise housing, thermocouple wire and protective casing; it is characterized in that: described protective casing is circular platform type; the bottom surface diameter of circular platform type is 22-28mm; another bottom surface diameter is 32-40mm, and the bore dia that the centre holds thermocouple wire is slightly larger than the diameter of thermocouple wire.
2, the armoured thermocouple of using as right 1 described high temperature high pressure and hig flow speed; it is characterized in that: the circular platform type of described protective casing is divided into two sections up and down; it is cylindrical that epimere becomes; diameter is 32-40mm; hypomere is a circular platform type; the diameter of hypomere upper surface is 38-48mm, cylinder and round platform junction smooth transition.
3, the using method of the thermopair used of high temperature high pressure and hig flow speed as claimed in claim 1 or 2, thermopair is welded on the field of employment, it is characterized in that: the protective casing of described protective sleeve tubular type thermopair is 45 degree with the bevel for welding that makes use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100518586A CN100483090C (en) | 2006-06-08 | 2006-06-08 | Armored thermocouple for high temperature high pressure and hig flow speed and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100518586A CN100483090C (en) | 2006-06-08 | 2006-06-08 | Armored thermocouple for high temperature high pressure and hig flow speed and its using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1858567A true CN1858567A (en) | 2006-11-08 |
| CN100483090C CN100483090C (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100518586A Active CN100483090C (en) | 2006-06-08 | 2006-06-08 | Armored thermocouple for high temperature high pressure and hig flow speed and its using method |
Country Status (1)
| Country | Link |
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| CN (1) | CN100483090C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665743A (en) * | 2017-10-20 | 2018-02-06 | 中国核动力研究设计院 | Thermometer and its temperature measurement system for integral reactor temperature survey |
| CN112781750A (en) * | 2021-01-22 | 2021-05-11 | 三门核电有限公司 | Thermal resistor temperature sensor for nuclear power plant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4014361A1 (en) * | 1990-05-04 | 1991-11-14 | Werner & Pfleiderer | TEMPERATURE SENSOR FOR MIXING AND KNOWING MACHINES |
| CN2071784U (en) * | 1990-08-06 | 1991-02-20 | 叶挺刚 | Assembled armoured thermocouple with sealing cutting ferrule |
| CN2155564Y (en) * | 1993-04-02 | 1994-02-09 | 赵金富 | Hot-sleeve-type temp-measuring protective tube |
| CN2341133Y (en) * | 1998-08-19 | 1999-09-29 | 浙江省永康温度仪表厂 | High voltage armored thermocouple |
| US20040255666A1 (en) * | 2003-06-19 | 2004-12-23 | Ametek, Inc. | Thermocouple device and method of thermocouple construction employing small grain size conductors |
-
2006
- 2006-06-08 CN CNB2006100518586A patent/CN100483090C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665743A (en) * | 2017-10-20 | 2018-02-06 | 中国核动力研究设计院 | Thermometer and its temperature measurement system for integral reactor temperature survey |
| CN107665743B (en) * | 2017-10-20 | 2023-11-24 | 中国核动力研究设计院 | Thermometer for measuring temperature of integrated reactor and temperature measuring system thereof |
| CN112781750A (en) * | 2021-01-22 | 2021-05-11 | 三门核电有限公司 | Thermal resistor temperature sensor for nuclear power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483090C (en) | 2009-04-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170801 Address after: Jiangbei District, Zhejiang city of Ningbo Province Dongsheng Street 315020 No. 52 Patentee after: Ningbo Auqi Auto-Instrument Equipment Co.,Ltd. Address before: Jiangbei District, Zhejiang city of Ningbo Province Dongsheng Street 315020 No. 38 Ningbo Aoqi Automation Instrumentation Co. Ltd. Patentee before: Sun Wenzhong |
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| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
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. |
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| CP02 | Change in the address of a patent holder |