CN101806638B - Quick-response leakproof high-temperature thermocouple - Google Patents
Quick-response leakproof high-temperature thermocouple Download PDFInfo
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- CN101806638B CN101806638B CN2009100678610A CN200910067861A CN101806638B CN 101806638 B CN101806638 B CN 101806638B CN 2009100678610 A CN2009100678610 A CN 2009100678610A CN 200910067861 A CN200910067861 A CN 200910067861A CN 101806638 B CN101806638 B CN 101806638B
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Abstract
The invention belongs to a quick-response leakproof high-temperature thermocouple, which consists of a junction box, a protective casing and a temperature measurement element. The protective casing consists of an upper protective casing and a lower protective casing in coaxial arrangement; the upper end of the upper protective casing is fixedly arranged on the junction box; and the temperature measurement element is arranged in the protective casing coaxially, and a software wire at the upper end of the temperature measurement element is fixed on the junction box. The quick-response leakproof high-temperature thermocouple is characterized in that: an open reinforced tube is fixedly arranged at the lower end of the lower protective casing coaxially; and the lower end of the temperature measurement element is arranged in the reinforced tube out of the protective casing. The quick-response leakproof high-temperature thermocouple has simple structure, scientific and reasonable design, short response time in measurement, convenient replacement of a measurement core, high measurement accuracy and relatively high safety.
Description
Technical field
The invention belongs to the thermopair in the temperature sensor field, especially a kind of quick-response leakproof high-temperature thermocouple.
Background technology
The pyrometer couple application is very extensive, and especially in the operation of petrochemical industry synthetic ammonia, its process detected temperatures generally reaches more than 800 ℃, and temperature variation is frequent, but also is accompanied by washing away of medium, so very high to the technical requirement of thermopair.The thermopair that can be used in this occasion of Xiao Shouing all adopts ceramic platinum rhodium thermocouple in the market, mainly by anti-explosion terminal box, corundum ceramic protective casing and ceramic temperature element three parts constitute, the measuring junction of protective casing is closed, temperature element one end is packed in the protective casing, the other end is packed on the anti-explosion terminal box, though can realize high temperature measurement, but still there are the following problems: 1. the measuring junction of temperature element is closed in the protection tube, the existence of and intracavity space thicker because of the wall thickness of protective casing, response time can reach more than the 120s, is difficult to realize responding to fast when occurrence temperature changes; 2. the internal measurement element is the pottery monoblock type; and with protective casing measuring junction inwall close together; in case protective casing is washed away damage; the spoilage of inner temperature element is high; and because of one through to the terminal box place; so can cause the whole damage of pyrometer couple, increase the danger that thermopair is used.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of quick-response leakproof high-temperature thermocouple is provided, this thermocouple measurement response time is short, measures core body and changes conveniently, and measuring accuracy and security are higher.
The present invention solves its technical matters and is achieved through the following technical solutions:
A kind of quick-response leakproof high-temperature thermocouple; constitute by terminal box, protective casing and temperature element; protective casing reaches down by last protective casing, and the upper and lower coaxial installation of protective casing forms; last protective casing upper end is packed on the terminal box; the coaxial protective casing software line interior and on it that places of temperature element is packed on the terminal box; wherein descend the coaxial reinforced pipe that installs an opening in lower end of protective casing, the lower end of temperature element is arranged in this outer reinforced pipe of protective casing.
And described protective casing is made of last protective casing and following protective casing two parts, and last protective casing installs by active locknut and following protective casing.
And, being provided with in the described protective casing and compressing the resistance neglected loading and put, temperature element is put and is packed in the protective casing by compressing the resistance neglected loading.
And, describedly compressing the resistance neglected loading and put by hold-down bolt, pressure pad and graphite grazing pad and constitute, temperature element passes the axle center of hold-down bolt, pressure pad and graphite grazing pad, and hold-down bolt meshes with protective casing and also compresses pressure pad and graphite grazing pad.
And described upper end of going up the temperature element in the protective casing installs a high temperature joint, is filled with high-temp glue in this high temperature joint.
And, being shaped on N through hole on the described reinforced pipe tube wall, this through hole radial equipartition is between temperature element lower end and reinforced pipe lower end, and the quantity of N is 2≤N≤10.
And described reinforced pipe is made of the outer reinforced pipe of interior reinforced pipe and coaxial outside, coaxial bonding forming between interior reinforced pipe, outer reinforced pipe and the protective casing.
Advantage of the present invention and beneficial effect are:
1. the coaxial reinforced pipe that installs in the protective casing lower end of this quick-response leakproof high-temperature thermocouple; the lower end of temperature element is arranged in the outer reinforced pipe of protective casing; and be connected with measured medium; this kind structure can guarantee temperature element very first time response measured medium variation of temperature; especially in the medium of temperature frequent variations; measure the response time weak point; improved the degree of accuracy of work efficiency and data acquisition; and be shaped on N through hole on the reinforcement tube wall; strengthened thermal conduction effect; and weakened the impact strength of medium, alleviated stress rupture temperature element.
2. the protective casing of this quick-response leakproof high-temperature thermocouple is made of last protective casing and following protective casing two parts; last protective casing installs by active locknut and following protective casing; this kind structure is for convenience detach; the replacing element is easier to; reduced the expense of product maintenance maintenance; save use cost, improved economic benefit.
3. be provided with in the protective casing of this quick-response leakproof high-temperature thermocouple and compress the resistance neglected loading and put; temperature element is put and is packed in the protective casing by compressing the resistance neglected loading; this kind structure can prevent effectively that temperature element from damaging the back high-temperature medium and flowing into terminal box or external environment condition; work the mischief, improved security.
4. this quick-response leakproof high-temperature thermocouple temperature element upper end installs a high temperature joint, can high-temp glue in this high temperature joint, when measuring sensor is damaged, can prevent that Korrosionsmedium from entering terminal box inside by temperature element, improved the security of pyrometer couple integral body.
5. the present invention is simple in structure, and design science is reasonable, measures the response time weak point, measures core body and changes conveniently, and the measuring accuracy height is the higher quick-response leakproof high-temperature thermocouple of a kind of security.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of quick-response leakproof high-temperature thermocouple; by terminal box 1; protective casing and temperature element 9 constitute; the protective casing outer wall can joint flange 8; protective casing is by on last protective casing 2 and the following protective casing 14; coaxial installation forms down; last protective casing installs with following protective casing by active locknut 16; between last protective casing and the following protective casing O-ring seal 15 is installed; the upper end of last protective casing is packed on the terminal box; temperature element is packed on the terminal box by software line 17 and places in the protective casing; the temperature element upper end installs a high temperature joint 3; can high-temp glue 4 in this high temperature joint; this high-temp glue can be high temperature resistant 800 ℃; buy from the market and obtain; the coaxial reinforced pipe that installs in protective casing lower end wherein; this reinforced pipe can be one; the outer reinforced pipe 10 of reinforced pipe 12 and coaxial outside constitutes in also can serving as reasons; the present embodiment accompanying drawing is depicted as the latter; interior reinforced pipe; coaxial between outer reinforced pipe and the protective casing by elevated-temperature seal insulating material 13 bonding forming; described elevated-temperature seal insulating material is that heatproof can reach 1000 ℃ high-temperature seal adhesive, and this high-temperature seal adhesive can be bought on market and obtain.Be shaped on N through hole 11 on the wherein outer reinforcement tube wall, this through hole radial equipartition is between temperature element lower end and reinforced pipe lower end, and the quantity of N is 2≤N≤10, and the number of openings shown in the present embodiment is 2.The lower end of temperature element is arranged in the outer outer reinforced pipe of protective casing; and be connected with measured medium; the interior setting of protective casing compresses the resistance neglected loading and puts; temperature element is put and is packed in the protective casing by compressing the resistance neglected loading; compressing the resistance neglected loading puts by hold-down bolt 5, pressure pad 6 and graphite grazing pad 7 and constitutes; temperature element passes the axle center of hold-down bolt, pressure pad and graphite grazing pad, and hold-down bolt and protective casing engagement also compress pressure pad and graphite grazing pad.
The present invention when mounted; earlier flange is installed on the tested cylinder body, temperature element is installed on the protective casing according to the position that designs in advance, the software line with temperature element is connected on the terminal box then; the line position adjustment that goes out of terminal box is finished; screw active locknut, this quick-response leakproof high-temperature thermocouple installs, in use; when temperature element damages; only need to go up protective casing and outward winding and be replaceable temperature element, time saving and energy saving, reduced the cost of maintenance maintenance.
Claims (5)
1. quick-response leakproof high-temperature thermocouple; by terminal box; protective casing and temperature element constitute; protective casing is by on last protective casing and the following protective casing; coaxial installation forms down; last protective casing upper end is packed on the terminal box; the coaxial protective casing software line interior and on it that places of temperature element is packed on the terminal box; it is characterized in that: the coaxial reinforced pipe that installs an opening in the lower end of following protective casing; the lower end of temperature element is arranged in this outer reinforced pipe of protective casing; the interior setting of described protective casing compresses the resistance neglected loading and puts; temperature element is put and is packed in the protective casing by compressing the resistance neglected loading; described compress the resistance neglected loading put by hold-down bolt; pressure pad and graphite grazing pad constitute; temperature element passes hold-down bolt; the axle center of pressure pad and graphite grazing pad, hold-down bolt and protective casing engagement also compress pressure pad and graphite grazing pad.
2. quick-response leakproof high-temperature thermocouple according to claim 1 is characterized in that: described protective casing is made of last protective casing and following protective casing two parts, and last protective casing installs by active locknut and following protective casing.
3. quick-response leakproof high-temperature thermocouple according to claim 1 is characterized in that: described upper end of going up the temperature element in the protective casing installs a high temperature joint, is filled with high-temp glue in this high temperature joint.
4. quick-response leakproof high-temperature thermocouple according to claim 1 is characterized in that: be shaped on N through hole on the described reinforced pipe tube wall, this through hole radial equipartition is between temperature element lower end and reinforced pipe lower end, and the quantity of N is 2≤N≤10.
5. according to claim 1 or 4 described quick-response leakproof high-temperature thermocouples, it is characterized in that: described reinforced pipe is made of the outer reinforced pipe of interior reinforced pipe and coaxial outside, coaxial bonding forming between interior reinforced pipe, outer reinforced pipe and the protective casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100678610A CN101806638B (en) | 2009-02-13 | 2009-02-13 | Quick-response leakproof high-temperature thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100678610A CN101806638B (en) | 2009-02-13 | 2009-02-13 | Quick-response leakproof high-temperature thermocouple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101806638A CN101806638A (en) | 2010-08-18 |
| CN101806638B true CN101806638B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100678610A Active CN101806638B (en) | 2009-02-13 | 2009-02-13 | Quick-response leakproof high-temperature thermocouple |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033281B (en) * | 2012-12-24 | 2015-01-21 | 重庆材料研究院 | Platinum resistance temperature sensor with high intensity and fast response |
| CN103245431B (en) * | 2013-05-21 | 2016-03-02 | 天津市中环温度仪表有限公司 | Measure flue gas thermocouple |
| CN105571729A (en) * | 2014-10-29 | 2016-05-11 | 蔺维江 | Industrial thermocouple/thermal resistor temperature measuring device with wear resistant protective casing |
| CN104568200A (en) * | 2015-01-04 | 2015-04-29 | 安徽蓝德仪表有限公司 | Anti-explosion platinum thermal resistor |
| CN104614088B (en) * | 2015-01-19 | 2017-11-10 | 上海交通大学 | High-precision wall surface temperature measurement apparatus |
| CN107202645A (en) * | 2017-07-10 | 2017-09-26 | 安徽徽宁电器仪表集团有限公司 | A kind of two-tube protection thermocouple |
| CN109855754A (en) * | 2017-11-30 | 2019-06-07 | 北京航天试验技术研究所 | A kind of temperature sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818671A2 (en) * | 1996-07-12 | 1998-01-14 | Isuzu Ceramics Research Institute Co., Ltd. | A ceramic sheath type thermocouple |
| CN1332362A (en) * | 2001-08-15 | 2002-01-23 | 沈阳东大传感技术有限公司 | Immersed thermocouple for temperature measurement of aluminium electrolyte |
| CN2898790Y (en) * | 2006-05-18 | 2007-05-09 | 长沙捷扬自动化工程有限公司 | High-temperature and pressure-resisting thermocoupler |
| CN201364209Y (en) * | 2009-02-13 | 2009-12-16 | 天津市中环温度仪表有限公司 | Quick-response leakage-damping high temperature thermocouple |
-
2009
- 2009-02-13 CN CN2009100678610A patent/CN101806638B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818671A2 (en) * | 1996-07-12 | 1998-01-14 | Isuzu Ceramics Research Institute Co., Ltd. | A ceramic sheath type thermocouple |
| CN1332362A (en) * | 2001-08-15 | 2002-01-23 | 沈阳东大传感技术有限公司 | Immersed thermocouple for temperature measurement of aluminium electrolyte |
| CN2898790Y (en) * | 2006-05-18 | 2007-05-09 | 长沙捷扬自动化工程有限公司 | High-temperature and pressure-resisting thermocoupler |
| CN201364209Y (en) * | 2009-02-13 | 2009-12-16 | 天津市中环温度仪表有限公司 | Quick-response leakage-damping high temperature thermocouple |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平11-190667A 1999.07.13 |
| JP特开平9-79914A 1997.03.28 |
Also Published As
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| CN101806638A (en) | 2010-08-18 |
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