CN216559402U - Structure for preventing thermocouple hot end from being grounded - Google Patents
Structure for preventing thermocouple hot end from being grounded Download PDFInfo
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- CN216559402U CN216559402U CN202123298892.2U CN202123298892U CN216559402U CN 216559402 U CN216559402 U CN 216559402U CN 202123298892 U CN202123298892 U CN 202123298892U CN 216559402 U CN216559402 U CN 216559402U
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Abstract
The utility model discloses a structure for preventing a hot end of a thermocouple from being grounded, which comprises a thermocouple body, wherein two thermocouple poles are arranged inside the thermocouple body, insulating protective sleeves are arranged on the outer sides of the two thermocouple poles, an insulator is arranged between the two thermocouple poles, one end of the thermocouple body is provided with a quick plug, and the other end of the thermocouple body is provided with a temperature measuring hot end sleeve head. According to the utility model, the temperature measuring end of the thermocouple is provided with the temperature measuring hot end sleeve head made of high-temperature-resistant material, so that the phenomenon that the temperature measuring end point of the thermocouple is grounded or swings at a high temperature in use to contact with a metal wall to cause electromotive force fluctuation is avoided, and thus inaccurate temperature display jitter is avoided.
Description
Technical Field
The utility model relates to the technical field of thermocouples, in particular to a structure for preventing a hot end of a thermocouple from being grounded.
Background
The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The shapes of various thermocouples are different greatly according to requirements, but the basic structures of the thermocouples are approximately the same, the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and the thermocouples are generally matched with a display instrument, a recording instrument and an electronic regulator for use;
in the aspect of high-temperature measurement application, in the process of using a thermocouple with an exposed end outside, a temperature measuring hot end point is easily grounded or is in contact with a metal wall due to swinging in a high-temperature state, so that electromotive force fluctuation is caused, and product quality control is out of control due to unknown reasons such as computer terminal system collapse, system alarm, temperature jump and the like, so that a structure for avoiding grounding of the hot end of the thermocouple is provided.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a structure for preventing a hot end of a thermocouple from being grounded, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a avoid thermocouple hot junction ground structure, includes the thermocouple body, the inside of thermocouple body is equipped with two thermocouple poles, two the outside of thermocouple pole is equipped with insulating protective sheath, two be equipped with the insulator between the thermocouple pole, the one end of thermocouple body is equipped with quick plug, the other end of thermocouple body is equipped with temperature measurement hot junction sleeve head.
As a further scheme of the utility model: when the thermocouple body is a single thermocouple core, one end of the temperature-measuring hot-end sleeve head is provided with a hemispherical groove, the other end of the temperature-measuring hot-end sleeve head is provided with two thermocouple through holes, and the two thermocouple through holes are communicated with the hemispherical groove.
As a further scheme of the utility model: when the thermocouple body is a thermocouple with double cores, one end of the temperature-measuring hot-end sleeve head is provided with two hemispherical grooves, the other end of the temperature-measuring hot-end sleeve head is provided with four thermocouple pole through holes, and the four thermocouple pole through holes are divided into two groups which are respectively in through connection with the two corresponding hemispherical grooves.
As a further scheme of the utility model: the temperature measuring hot end sleeve is made of one of aluminum oxide material, copper nitride material, non-metal armor material, non-metal ceramic, composite material, new material coating material, nano ceramic coating material or temperature-resistant insulating material.
As a further scheme of the utility model: the spherical radius of the semi-spherical groove is larger than the diameter of the connecting end of the two thermoelectric dipoles.
As a further scheme of the utility model: the temperature measuring hot end sleeve head is one of a cylinder, a cuboid or a cube.
As a further scheme of the utility model: the thermocouple body is one of a K-type thermocouple, an S-type thermocouple, an R-type thermocouple, a B-type thermocouple, an N-type thermocouple, an E-type thermocouple, a J-type thermocouple, a T-type thermocouple or a C-type thermocouple.
Compared with the prior art, the utility model has the following advantages:
according to the utility model, the two thermocouples in the thermocouple body respectively penetrate through the thermocouple through holes, and the two end parts of the two thermocouples are welded and connected in the hemispherical groove, so that the temperature measuring hot end sleeve is sleeved on the temperature measuring end of the thermocouple body, and the thermocouple is convenient to install.
According to the utility model, the temperature measuring end of the thermocouple is provided with the temperature measuring hot end sleeve head made of high-temperature-resistant material, so that the problem that the electromotive force fluctuation is caused by the contact between the temperature measuring end point of the thermocouple and a metal wall due to grounding or swinging in a high-temperature state in use is avoided, a series of problems of inaccurate temperature display jumping, system alarm, system breakdown and the like are avoided, the production efficiency of customers is greatly improved, and the equipment maintenance cost and the replacement frequency of related accessories are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a structure for preventing a hot end of a thermocouple from being grounded.
Fig. 2 is an enlarged schematic view of a in fig. 1.
FIG. 3 is a schematic view of a conventional thermocouple structure according to the present invention
Fig. 4 is a schematic top view of a temperature measuring hot end socket according to an embodiment.
Fig. 5 is a schematic bottom view of the temperature measuring hot end socket according to the first embodiment.
Fig. 6 is a schematic top view of the temperature measuring hot end socket according to the second embodiment.
Fig. 7 is a schematic bottom view of the temperature measuring hot end socket according to the second embodiment.
In the figure: 1. a thermocouple body; 2. a thermocouple; 3. an insulator; 4. the temperature measuring hot end is sleeved with a head; 41. a thermocouple pole through hole; 42. a hemispherical groove; 5. a quick plug; 6. an insulating protective sleeve; 7. and a connecting end.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
The first embodiment is as follows:
referring to fig. 1-5, a structure for preventing a hot end of a thermocouple from being grounded comprises a thermocouple body 1, two thermocouple poles 2 are arranged inside the thermocouple body 1, insulating protective sleeves 6 are arranged on the outer sides of the two thermocouple poles 2, an insulator 3 is arranged between the two thermocouple poles 2, a quick plug 5 is arranged at one end of the thermocouple body 1, a high-temperature-resistant temperature-measuring hot end sleeve 4 is arranged at the other end of the thermocouple body 1, and the temperature-measuring hot end sleeve 4 is made of one of aluminum oxide or copper nitride or a non-metal armored material or a non-metal ceramic or a composite material or a new material coating material or a nano ceramic coating material or a temperature-resistant insulating material; the thermocouple body 1 is one of a K-type thermocouple, an S-type thermocouple, an R-type thermocouple, a B-type thermocouple, an N-type thermocouple, an E-type thermocouple, a J-type thermocouple, a T-type thermocouple or a C-type thermocouple; the sleeve head 4 for measuring the temperature and the hot end is in a cylinder shape.
When the thermocouple body 1 is a single core, one end of the temperature-measuring hot-end sleeve head 4 is provided with a hemispherical groove 42, the other end of the temperature-measuring hot-end sleeve head 4 is provided with two thermocouple pole through holes 41, and the two thermocouple pole through holes 41 are communicated with the hemispherical groove 42.
The spherical radius of the semi-spherical groove 42 is larger than the diameter of the connecting end 7 of the two thermoelectric dipoles 2, so as to avoid the contact between the connecting end 7 and the bottom of the vacuum furnace.
Example two:
referring to fig. 1, 6 and 7, a structure for preventing a hot end of a thermocouple from being grounded comprises a thermocouple body 1, wherein two thermocouple poles 2 are arranged inside the thermocouple body 1, insulating protective sleeves 6 are arranged on the outer sides of the two thermocouple poles 2, an insulator 3 is arranged between the two thermocouple poles 2, one end of the thermocouple body 1 is provided with a quick plug 5, and the other end of the thermocouple body 1 is provided with a high-temperature-resistant temperature-measuring hot end sleeve head 4; the material of the temperature measuring hot end sleeve head 4 is one of aluminum oxide or copper nitride or non-metal armor material or non-metal ceramic or composite material or new material coating material or nano ceramic coating material or temperature-resistant insulating material; the thermocouple body 1 is one of a K-type thermocouple, an S-type thermocouple, an R-type thermocouple, a B-type thermocouple, an N-type thermocouple, an E-type thermocouple, a J-type thermocouple, a T-type thermocouple or a C-type thermocouple; the sleeve head 4 for measuring the temperature and the hot end is in a cylinder shape. When the thermocouple body 1 is a dual-core thermocouple, one end of the temperature-measuring hot-end sleeve head 4 is provided with two hemispherical grooves 42, the other end of the temperature-measuring hot-end sleeve head 4 is provided with four thermocouple through holes 41, the four thermocouple through holes 41 are divided into two groups which are respectively connected with the two corresponding hemispherical grooves 42 in a penetrating manner, the spherical radius of the hemispherical grooves 42 is larger than the diameter of the connecting end 7 of the two thermocouple electrodes 2, so that the connecting end 7 is prevented from contacting with the bottom of the vacuum furnace, during use, the thermocouple electrodes 2 of the two temperature-measuring ends of the dual-core thermocouple respectively penetrate through the thermocouple through holes 41, and the two thermocouple electrodes 2 of the dual-core are connected in the corresponding hemispherical grooves 42.
The working principle of the utility model is as follows: when the thermocouple is used, the quick plug 5 is inserted on an electric instrument, the thermocouple body 1 is placed in a vacuum furnace or other high-temperature furnaces, the temperature measuring end of the thermocouple body 1 is provided with the temperature measuring hot end sleeve head 4 made of high-temperature resistant materials, the two thermocouples 2 in the thermocouple body 1 respectively penetrate through the thermocouple through holes 41, and the two end parts of the two thermocouples are welded and connected in the hemispherical groove 42, so that the temperature measuring hot end sleeve head 4 is sleeved on the temperature measuring end of the thermocouple body 1, the phenomenon that the temperature measuring end points of the thermocouple are grounded in use or swing in a high-temperature state to contact with a metal wall to cause electromotive force fluctuation is avoided, and therefore temperature display jitter is prevented from being inaccurate.
Claims (7)
1. The utility model provides an avoid thermocouple hot junction ground structure, includes thermocouple body (1), its characterized in that, the inside of thermocouple body (1) is equipped with two thermocouple poles (2), two the outside of thermocouple pole (2) is equipped with insulating protective sheath (6), two be equipped with insulator (3) between thermocouple pole (2), the one end of thermocouple body (1) is equipped with quick plug (5), the other end of thermocouple body (1) is equipped with high temperature resistant temperature measurement hot junction cover head (4).
2. The structure for preventing the hot end of the thermocouple from being grounded according to claim 1, wherein when the thermocouple body (1) is a single thermocouple core, one end of the temperature-measuring hot end sleeve head (4) is provided with a hemispherical groove (42), the other end of the temperature-measuring hot end sleeve head (4) is provided with two thermocouple pole through holes (41), and the two thermocouple pole through holes (41) are both connected with the hemispherical groove (42) in a penetrating manner.
3. The structure for preventing the hot end of the thermocouple from being grounded according to claim 1, wherein when the thermocouple body (1) is a dual core, one end of the temperature-measuring hot end sleeve (4) is provided with two hemispherical grooves (42), the other end of the temperature-measuring hot end sleeve (4) is provided with four thermocouple pole through holes (41), and the four thermocouple pole through holes (41) are divided into two groups which are respectively communicated with the two corresponding hemispherical grooves (42).
4. The structure for preventing the hot end of the thermocouple from being grounded according to claim 2 or 3, wherein the temperature measuring hot end sleeve head (4) is made of one of aluminum oxide material, copper nitride material, non-metal armor material, non-metal ceramic, composite material, new material coating material, nano ceramic coating material or temperature-resistant insulating material.
5. A structure for avoiding hot end grounding of thermocouple according to claim 4, characterized in that the spherical radius of the semi-spherical groove (42) is larger than the diameter of the connecting end (7) of two thermocouple electrodes (2).
6. The structure for avoiding grounding of the hot end of the thermocouple according to claim 1, wherein the temperature measuring hot end sleeve head (4) is one of a cylinder, a cuboid or a cube.
7. A structure for avoiding grounding of a hot end of a thermocouple according to claim 1, wherein said thermocouple body (1) is one of a K-type thermocouple, an S-type thermocouple, an R-type thermocouple, a B-type thermocouple, an N-type thermocouple, an E-type thermocouple, a J-type thermocouple, a T-type thermocouple and a C-type thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298892.2U CN216559402U (en) | 2021-12-23 | 2021-12-23 | Structure for preventing thermocouple hot end from being grounded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298892.2U CN216559402U (en) | 2021-12-23 | 2021-12-23 | Structure for preventing thermocouple hot end from being grounded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216559402U true CN216559402U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298892.2U Active CN216559402U (en) | 2021-12-23 | 2021-12-23 | Structure for preventing thermocouple hot end from being grounded |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216559402U (en) |
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2021
- 2021-12-23 CN CN202123298892.2U patent/CN216559402U/en active Active
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