CN104406707A - Dual-thermocouple protective casing pipe - Google Patents
Dual-thermocouple protective casing pipe Download PDFInfo
- Publication number
- CN104406707A CN104406707A CN201410762990.2A CN201410762990A CN104406707A CN 104406707 A CN104406707 A CN 104406707A CN 201410762990 A CN201410762990 A CN 201410762990A CN 104406707 A CN104406707 A CN 104406707A
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- CN
- China
- Prior art keywords
- cylindrical cavity
- protective casing
- dual
- thermocouple
- casing pipe
- 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.)
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Abstract
The invention discloses a dual-thermocouple protective casing pipe and belongs to the field of automated instruments. The dual-thermocouple protective casing pipe is characterized by comprising a protective pipe and a wiring box welded at the upper end of the protective pipe, wherein a cylindrical cavity body A and a cylindrical cavity body B are the same and formed in the protective pipe. The dual-thermocouple protective casing pipe is reasonable in structure; two thermocouples can be simultaneously mounted, so that the mounting efficiency is improved and materials are saved; more importantly, the cylindrical cavity body A and the cylindrical cavity body B are internally communicated, so that the surrounding temperatures of the thermocouples are guaranteed to be identical and the cold junction compensation precision is improved.
Description
Technical field
The present invention relates to a kind of thermocouple protective casing, particularly an a kind of two thermocouple protective casing, belongs to instrument and meter for automation field.
Background technology
Cold junction compensation will be carried out during thermocouple temperature measurement; and the method for cold junction compensation usually adopts thermopair to compensate; i.e. two thermocouple temperature measurements; two thermocouple temperature measurements all adopt installation two thermopairs now; these two thermopairs have oneself protective casing, and not only cost is high, the more important thing is that the installation site due to two thermopairs is different; the temperature field temperature be difficult to residing for guarantee two thermopairs is identical, and this just brings error to cold junction compensation.
Summary of the invention
The technical matters that pin of the present invention will solve is to provide a kind of and can installs two thermopairs simultaneously and guarantee the thermocouple protective casing that this temperature field temperature residing for two thermopairs is identical.。
For achieving the above object, the present invention is realized by following technical scheme:
An a kind of two thermocouple protective casing, is characterized in that, comprises protection tube and is welded on the terminal box of protection tube upper end, the cylindrical cavity A having two cavitys identical in described protection tube and cylindrical cavity B.
Further, the material of described protection tube is stainless steel.
Further, described set of terminal box has two cover connection terminals.
Further, cylindrical cavity A and cylindrical cavity B is interior for placing thermopair.
The invention has the beneficial effects as follows, the present invention can install two thermopairs simultaneously, not only increase installation effectiveness, save material, the more important thing is because cylindrical cavity A is communicated with cylindrical cavity B inside, ensure that the temperature around two thermopairs is identical, improve the precision of cold junction compensation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A-A cut-open view of the present invention.
In accompanying drawing, main mark implication is as follows:
1, protection tube 2, terminal box 3, cylindrical cavity A 4, cylindrical cavity B.
Embodiment
With reference to figure 1 and Fig. 2, the two thermocouple protective casing of the present invention, comprises protection tube 1 and is welded on the terminal box 2 of protection tube 1 upper end, the cylindrical cavity A3 having two cavitys identical in described protection tube 1 and cylindrical cavity B4.
Further, the material of described protection tube 1 is stainless steel.
Further, described terminal box 2 is provided with two cover connection terminals.
Further, cylindrical cavity A3 and cylindrical cavity B4 is interior for placing thermopair.
Cold junction compensation will be carried out during thermocouple temperature measurement, and the method for cold junction compensation usually adopts thermopair to compensate, i.e. two thermocouple temperature measurements, the present invention can install two thermopairs simultaneously, not only increases installation effectiveness, saves material, the more important thing is because cylindrical cavity A3 is communicated with cylindrical cavity B4 inside, ensure that the temperature around two thermopairs is identical, improve the precision of cold junction compensation, be also convenient to safeguard.
Claims (1)
1. a two thermocouple protective casing, is characterized in that: comprise protection tube (1) and be welded on the terminal box (2) of protection tube (1) upper end, have the cylindrical cavity A(3 that two cavitys are identical in described protection tube (1)) and cylindrical cavity B(4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762990.2A CN104406707A (en) | 2014-12-15 | 2014-12-15 | Dual-thermocouple protective casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762990.2A CN104406707A (en) | 2014-12-15 | 2014-12-15 | Dual-thermocouple protective casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406707A true CN104406707A (en) | 2015-03-11 |
Family
ID=52644354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410762990.2A Pending CN104406707A (en) | 2014-12-15 | 2014-12-15 | Dual-thermocouple protective casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104406707A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092098A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Double-graduation thermocouple and use method |
| CN105352622A (en) * | 2015-10-23 | 2016-02-24 | 安徽蓝德仪表有限公司 | Multi-point thermal resistor |
| CN105606244A (en) * | 2015-12-17 | 2016-05-25 | 西安交通大学 | No-temperature-compensation thermocouple temperature measurement method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195755Y (en) * | 1993-03-23 | 1995-04-26 | 胡万隆 | Double-thermocouple temperature transmitter |
| US7004626B1 (en) * | 2004-03-05 | 2006-02-28 | Turbo Research, Inc. | Fast acting thermocouple |
| CN101034015A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Wolfram rhenium heat electric couple having correcting and monitoring holes |
| CN101034017A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Thermocouple with temperature correcting and monitoring holes |
-
2014
- 2014-12-15 CN CN201410762990.2A patent/CN104406707A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195755Y (en) * | 1993-03-23 | 1995-04-26 | 胡万隆 | Double-thermocouple temperature transmitter |
| US7004626B1 (en) * | 2004-03-05 | 2006-02-28 | Turbo Research, Inc. | Fast acting thermocouple |
| CN101034015A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Wolfram rhenium heat electric couple having correcting and monitoring holes |
| CN101034017A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Thermocouple with temperature correcting and monitoring holes |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092098A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Double-graduation thermocouple and use method |
| CN105352622A (en) * | 2015-10-23 | 2016-02-24 | 安徽蓝德仪表有限公司 | Multi-point thermal resistor |
| CN105352622B (en) * | 2015-10-23 | 2018-11-27 | 安徽蓝德自动化科技有限公司 | A kind of multi-point hot resistance |
| CN105606244A (en) * | 2015-12-17 | 2016-05-25 | 西安交通大学 | No-temperature-compensation thermocouple temperature measurement method |
| CN105606244B (en) * | 2015-12-17 | 2018-03-16 | 西安交通大学 | Not temperature compensated thermocouple temperature measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |
|
| WD01 | Invention patent application deemed withdrawn after publication |