CN202836807U - Platinum rhodium thermocouple - Google Patents
Platinum rhodium thermocouple Download PDFInfo
- Publication number
- CN202836807U CN202836807U CN 201220416298 CN201220416298U CN202836807U CN 202836807 U CN202836807 U CN 202836807U CN 201220416298 CN201220416298 CN 201220416298 CN 201220416298 U CN201220416298 U CN 201220416298U CN 202836807 U CN202836807 U CN 202836807U
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- China
- Prior art keywords
- tube
- protection tube
- platinum rhodium
- platinum
- thermocouple
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a platinum rhodium thermocouple which comprises a protection tube and a platinum rhodium wire arranged in the protection tube, wherein the protection tube is specifically in a three-layer structure, the outermost layer is a silicon carbide tube, the middle layer is a corundum tube, and the innermost layer is a corundum core. The protection tube is connected with a support tube through a flange reinforced tube. The protection tube and the platinum rhodium wire implement gas-tight seal on the platinum rhodium thermocouple through a Teflon gasket and a Teflon seal plug, and then implement structure seal on the platinum rhodium thermocouple through a center press tube under the actions of tight screwing of a compression thread and matching of a screw cap. The three-layer protection tube of the platinum rhodium thermocouple can keep excellent gas tightness and firmness while bearing the high temperature of 1600 DEG C; the structure seal is conducted under the actions of tight screwing of the compression thread and the matching of the screw cap to prevent the silicon carbide tube at the outermost layer from being damaged; and a thermocouple structure in the corundum tube can be timely drawn out and plugged when a harmful medium is leaked at the state of high temperature.
Description
Technical field
The utility model relates to a kind of temperature measuring instrument, is specifically related to a kind of platinum rhodium thermocouple.
Background technology
Platinum rhodium thermocouple is a kind of traditional temperature element, has that thermoelectricity capability is stable, inoxidizability is strong, suits to use continuously in oxidisability, inert atmosphere.Claim again the high temperature noble-metal thermocouple, it is as sensor for measuring temperature, common and temperature transmitter, regulator and Displaying Meter etc. support the use, the anabolic process control system is in order to direct measurement or control in the various production runes fluid, steam and gas medium and solid surface equitemperature in the 0-1800 ℃ of scope.Platinum rhodium thermocouple is conductor two ends by two kinds of heterogeneities when being bonded into the loop, when two abutment temperature not simultaneously, will in the loop, produce thermocurrent.When if the working end of thermopair and reference end have the temperature difference, Displaying Meter will be made comments and instructions out the corresponding temperature value of thermoelectrical potential that thermopair produces.The moving heat of the thermoelectricity of platinum rhodium thermocouple will and increase along with the rising of measuring junction temperature, and its size is only relevant with the temperature at thermocouple material and two ends, irrelevant with length, the diameter of thermode.The profile of various platinum rhodium thermocouples is often far from it because of needs, but their basic structure is roughly the same, usually is comprised of principal ingredients such as thermode, insulation sleeve protection tube and terminal boxes.Because the environment temperature of its use is a lot, this just has very high requirement to its impermeability and soundness.
The utility model content
For the problem that prior art exists, the purpose of this utility model is to propose a kind of platinum rhodium thermocouple with good impermeability and soundness.
For reaching this purpose, the utility model by the following technical solutions:
A kind of platinum rhodium thermocouple comprises protection tube and places the platinum-rhodium wire of described protection tube that wherein, described protection tube is specially three-decker, and outermost layer is carborundum tube, and the middle layer is alundum tube, and innermost layer is the corundum core.
Described protection tube is connected with stay pipe by the flange reinforced pipe.
Described protection tube and described platinum-rhodium wire carry out gas-tight seal by Tetrafluoro spacer and polytetrafluoroethylsealed sealed plug to described platinum rhodium thermocouple.
Described protection tube and described platinum-rhodium wire carry out sealing structure by the center pressure pipe tightening under the cooperation with nut of collet threaded.
The described platinum rhodium thermocouple that the utility model proposes, its three-layer protection pipe at high temperature all can bear 1600 ℃ high temperature and keep good impermeability and soundness; Carry out the damage that sealing structure can prevent the outermost layer carborundum tube tightening under the cooperation with nut of collet threaded; Can in time extract alundum tube out with interior thermocouple structure and shutoff when hazardous medium is revealed under the condition of high temperature.
Description of drawings
Fig. 1 is the structural representation of a kind of platinum rhodium thermocouple that the utility model proposes.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment:
As shown in Figure 1, Fig. 1 is the structural representation of a kind of platinum rhodium thermocouple that the utility model proposes.
Please refer to accompanying drawing 1, be a kind of platinum rhodium thermocouple that the utility model proposes, comprise protection tube and place the platinum-rhodium wire 12 of described protection tube; wherein, described protection tube is specially three-decker, and outermost layer is carborundum tube 9; the middle layer is alundum tube 10, and innermost layer is corundum core 11.
Please refer to accompanying drawing 1, described protection tube is connected with stay pipe 2 by flange reinforced pipe 8, and described stay pipe 2 also is connected with stay pipe 1 away from an end of described flange reinforced pipe 8.
Please refer to accompanying drawing 1, described protection tube and described platinum-rhodium wire 12 carry out gas-tight seal by Tetrafluoro spacer 7 and 6 pairs of described platinum rhodium thermocouples of polytetrafluoroethylsealed sealed plug.
Please refer to accompanying drawing 1, described protection tube and described platinum-rhodium wire 12 carry out sealing structure by center pressure pipe 5 tightening under the cooperation with nut 3 of collet threaded 4
The described platinum rhodium thermocouple that the utility model proposes, its three-layer protection pipe at high temperature all can bear 1600 ℃ high temperature and keep good impermeability and soundness; Carry out the damage that sealing structure can prevent outermost layer carborundum tube 9 tightening under the cooperation with nut 3 of collet threaded 4; Can in time extract alundum tube 10 out with interior thermocouple structure and shutoff when hazardous medium is revealed under the condition of high temperature.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obvious realization of the present utility model is not subjected to the restriction of aforesaid way; as long as adopted the method design of utility model and the various improvement that technical scheme is carried out; or without improving the design of utility model and technical scheme are directly applied to other occasion, all in protection domain of the present utility model.
Claims (4)
1. platinum rhodium thermocouple comprises protection tube and places the platinum-rhodium wire of described protection tube that it is characterized in that described protection tube is specially three-decker, outermost layer is carborundum tube, and the middle layer is alundum tube, and innermost layer is the corundum core.
2. platinum rhodium thermocouple according to claim 1 is characterized in that, described protection tube is connected with stay pipe by the flange reinforced pipe.
3. platinum rhodium thermocouple according to claim 1 is characterized in that, described protection tube and described platinum-rhodium wire carry out gas-tight seal by Tetrafluoro spacer and polytetrafluoroethylsealed sealed plug to described platinum rhodium thermocouple.
4. platinum rhodium thermocouple according to claim 1 is characterized in that, described protection tube and described platinum-rhodium wire carry out sealing structure by the center pressure pipe tightening under the cooperation with nut of collet threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416298 CN202836807U (en) | 2012-08-21 | 2012-08-21 | Platinum rhodium thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416298 CN202836807U (en) | 2012-08-21 | 2012-08-21 | Platinum rhodium thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836807U true CN202836807U (en) | 2013-03-27 |
Family
ID=47948490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220416298 Expired - Fee Related CN202836807U (en) | 2012-08-21 | 2012-08-21 | Platinum rhodium thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202836807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532673A (en) * | 2021-07-20 | 2021-10-22 | 鑫国集团有限公司 | High-precision platinum-rhodium thermocouple |
-
2012
- 2012-08-21 CN CN 201220416298 patent/CN202836807U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532673A (en) * | 2021-07-20 | 2021-10-22 | 鑫国集团有限公司 | High-precision platinum-rhodium thermocouple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20180821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |