CN220853918U - Thermocouple temperature measuring device - Google Patents
Thermocouple temperature measuring device Download PDFInfo
- Publication number
- CN220853918U CN220853918U CN202322740609.XU CN202322740609U CN220853918U CN 220853918 U CN220853918 U CN 220853918U CN 202322740609 U CN202322740609 U CN 202322740609U CN 220853918 U CN220853918 U CN 220853918U
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- Prior art keywords
- thermocouple
- shell
- constant temperature
- measuring
- temperature
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 10
- 239000010431 corundum Substances 0.000 claims abstract description 10
- 239000011324 bead Substances 0.000 claims description 12
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims description 10
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims 5
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a thermocouple temperature measuring device which comprises a junction box, a box cover and an electrical interface which are arranged on the junction box, a connecting pipe, a constant temperature mechanism, a measuring pipe, a flange plate and a corundum sleeve, wherein the connecting pipe, the constant temperature mechanism and the measuring pipe are sequentially connected to the lower end of the junction box from top to bottom; the constant temperature mechanism comprises a shell, wherein the upper end and the lower end of the shell are respectively connected with the connecting pipe and the flange plate, and two ceramic rollers are symmetrically arranged in the shell. According to the thermocouple temperature measuring device, the constant temperature mechanism can cool the near-cold end of the thermocouple wire to enable the near-cold end of the thermocouple wire to be close to the ambient temperature, so that temperature change caused by a large difference between the temperature of the cold end of the thermocouple wire and the room temperature is avoided, and the measurement accuracy is improved; the corundum sleeve has good hardness, high temperature resistance and corrosion resistance, and can effectively protect the inner side of the measuring tube.
Description
Technical Field
The utility model relates to the technical field of temperature measuring equipment, in particular to a thermocouple temperature measuring device.
Background
The thermocouple is a temperature measuring element commonly used in temperature measuring instruments, directly measures temperature, converts a temperature signal into a thermoelectromotive signal, converts the thermoelectromotive signal into the temperature of a measured medium through an electric instrument, and is the most widely used temperature sensing element in the fields of industrial production, scientific research and the like, and the basic structure of the thermocouple is generally composed of main parts such as a hot electrode, an insulating sleeve protection tube, a junction box and the like.
The thermocouple is required to keep the temperature of the cold end unchanged when measuring the temperature, but the thermocouple wire measuring end is heated and conducted to the cold end when measuring the high temperature, so that the temperature of the cold end is greatly different from the room temperature, the temperature of the cold end is changed, the measurement accuracy is seriously affected, and great difficulty is brought to the measurement; moreover, the existing thermocouple protective sleeve is generally made of stainless steel, and the material cannot well block oxygen, so that the thermocouple is low in oxidation resistance, the hardness of the thermocouple cannot meet the existing measurement requirement, and the thermocouple is easy to damage.
Disclosure of Invention
In view of the above, the utility model provides a thermocouple temperature measuring device which has the characteristics of high temperature resistance, corrosion resistance, strong hardness and accurate measurement.
The utility model solves the problems by the following technical means:
The thermocouple temperature measuring device comprises a junction box, a box cover and an electrical interface which are arranged on the junction box, a connecting pipe, a constant temperature mechanism, a measuring pipe, a flange plate and a corundum sleeve, wherein the connecting pipe, the constant temperature mechanism and the measuring pipe are sequentially connected to the lower end of the junction box from top to bottom, and the flange plate and the corundum sleeve are sequentially sleeved on the outer side of the measuring pipe from top to bottom and are connected to the lower end of the constant temperature mechanism;
The constant temperature mechanism comprises a shell, two ceramic rollers and a control mechanism, wherein the upper end and the lower end of the shell are respectively connected with the connecting pipe and the flange plate, and the two ceramic rollers are symmetrically arranged in the shell;
The measuring tube comprises an outer molybdenum disilicide shell, an inner insulating bead tube and two couple wires which are arranged in the insulating bead tube and connected together, wherein the hot ends of the couple wires are positioned at the bottom of the insulating bead tube, and the cold ends of the two couple wires are respectively wound around the two ceramic rollers and then connected into the junction box.
Preferably, the connecting pipe and the constant temperature mechanism are screwed together through threads.
Preferably, the constant temperature mechanism and the flange plate are screwed together through a mounting seat on the flange plate.
Preferably, the outer diameter of the measuring tube is the same as the connecting caliber of the lower end of the constant temperature mechanism, and a group of threads on the measuring tube can be mutually matched and screwed together.
Preferably, the thermocouple wire is a tungsten rhenium thermocouple wire.
Preferably, the two ceramic rollers are installed in the shell through two installation shafts, and two groups of limit grooves used for being clamped into two ends of the two installation shafts are arranged in the shell.
According to the technical scheme, the utility model has the following beneficial effects:
According to the thermocouple temperature measuring device, the cold ends of the two thermocouple wires are respectively wound around the two ceramic rollers and then connected into the junction box, so that the temperature of the near cold ends of the thermocouple wires can be reduced in the measuring process to approach the ambient temperature, the temperature change caused by a large difference between the temperature of the cold ends of the thermocouple wires and the room temperature is avoided, and the measuring accuracy is improved; the corundum sleeve has good hardness and high temperature resistance and corrosion resistance, can effectively protect the inner side of the measuring tube, meanwhile, the measuring tube is composed of a molybdenum disilicide shell and an insulating bead tube at the inner side of the molybdenum disilicide shell, and the molybdenum disilicide shell has the characteristics of high temperature resistance and high oxidation resistance, can effectively block oxygen and further effectively protect the working end of the thermocouple.
Drawings
FIG. 1 is a schematic diagram of a thermocouple temperature measuring device of the present utility model;
FIG. 2 is a schematic view of a constant temperature mechanism of the thermocouple temperature measuring device according to the present utility model.
1-2, A junction box-1, a box cover-2, an electric interface-3, a connecting pipe-4, a constant temperature mechanism-5, a shell-51, a ceramic roller-52, a mounting shaft-53, a limit groove-54, a thermocouple wire-6, a hot end-61, a measuring pipe-7, a molybdenum disilicide shell-71, an insulating bead pipe-72, a flange plate-8 and a corundum sleeve-9.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
The utility model will be described in detail below with reference to the accompanying drawings, as shown in fig. 1 to 2: the thermocouple temperature measuring device comprises a junction box 1, a box cover 2 and an electrical interface 3 which are arranged on the junction box 1, a connecting pipe 4, a constant temperature mechanism 5 and a measuring pipe 7 which are sequentially connected to the lower end of the junction box 1 from top to bottom, and a flange plate 8 and a corundum sleeve 9 which are sequentially sleeved on the outer side of the measuring pipe 7 from top to bottom and are connected to the lower end of the constant temperature mechanism 5; the constant temperature mechanism 5 comprises a shell 51, two ceramic rollers 52 and a control mechanism, wherein the upper end and the lower end of the shell 51 are respectively connected with the connecting pipe 4 and the flange 8, and the two ceramic rollers 52 are symmetrically arranged in the shell 51; the measuring tube 7 comprises an outer molybdenum disilicide shell 71, an inner insulating bead tube 72 and two couple wires 6 which are arranged inside the insulating bead tube 72 and connected together, wherein the hot ends 61 of the couple wires 6 are positioned at the bottom of the insulating bead tube 72, and cold ends of the two couple wires 6 are respectively wound around the two ceramic rollers 52 and then connected into the junction box 1.
In order to facilitate the disassembly and the assembly, as a further improvement of the technical proposal, the connecting pipe 4 and the constant temperature mechanism 5 are screwed together through threads.
In order to facilitate the disassembly and the assembly, as a further improvement of the technical scheme, the constant temperature mechanism 5 and the flange 8 are screwed together through the installation seat threads on the flange 8.
As a further improvement of the above technical solution, the outer diameter of the measuring tube 7 is the same as the connecting caliber of the lower end of the constant temperature mechanism 5, and a set of threads thereon can be mutually engaged and screwed together, so that the thermocouple temperature measuring device of this embodiment can not only install the constant temperature mechanism 5 but also remove the constant temperature mechanism 5 for use.
As a preferable mode of the above technical solution, the thermocouple wire 6 is a tungsten-rhenium thermocouple wire 6.
As a further improvement of the above technical solution, the two ceramic rollers 52 are mounted in the housing 51 through the mounting shaft 53, two sets of limiting grooves 54 for clamping in two ends of the two mounting shafts 53 are provided in the housing 51, and the length of the thermocouple wire 6 can be adjusted by adjusting the position of the mounting shaft 53 in the limiting grooves 54, so that the measurement accuracy is adjusted, and the applicability is wider.
According to the thermocouple temperature measuring device, the cold ends of the two thermocouple wires 6 are respectively wound around the two ceramic rollers 52 and then connected into the junction box 1, and the near cold ends of the thermocouple wires 6 can be cooled to be close to the ambient temperature in the measuring process, so that the temperature change caused by a large difference between the temperature of the cold ends of the thermocouple wires 6 and the room temperature is avoided, and the measuring accuracy is improved; the corundum sleeve 9 has good hardness and high temperature resistance and corrosion resistance, can effectively protect the inner side of the measuring tube 7, meanwhile, the measuring tube 7 is composed of a molybdenum disilicide shell 71 and an insulating bead tube 72 at the inner side of the molybdenum disilicide shell, and the molybdenum disilicide shell 71 has the characteristics of high temperature resistance and high oxidation resistance, can effectively block oxygen, and further effectively protects the working end of the thermocouple.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. A thermocouple temperature measuring device is characterized in that: the device comprises a junction box, a box cover and an electrical interface which are arranged on the junction box, a connecting pipe, a constant temperature mechanism, a measuring pipe, a flange plate and a corundum sleeve, wherein the connecting pipe, the constant temperature mechanism and the measuring pipe are sequentially connected to the lower end of the junction box from top to bottom, and the flange plate and the corundum sleeve are sequentially sleeved on the outer side of the measuring pipe from top to bottom and are connected to the lower end of the constant temperature mechanism;
The constant temperature mechanism comprises a shell, two ceramic rollers and a control mechanism, wherein the upper end and the lower end of the shell are respectively connected with the connecting pipe and the flange plate, and the two ceramic rollers are symmetrically arranged in the shell;
The measuring tube comprises an outer molybdenum disilicide shell, an inner insulating bead tube and two couple wires which are arranged in the insulating bead tube and connected together, wherein the hot ends of the couple wires are positioned at the bottom of the insulating bead tube, and the cold ends of the two couple wires are respectively wound around the two ceramic rollers and then connected into the junction box.
2. A thermocouple temperature measurement apparatus as set forth in claim 1 wherein: the connecting pipe and the constant temperature mechanism are screwed together through threads.
3. A thermocouple temperature measurement apparatus as claimed in claim 2, wherein: the constant temperature mechanism and the flange plate are screwed together through the installation seat threads on the flange plate.
4. A thermocouple temperature measurement apparatus as set forth in claim 3 wherein: the outer diameter of the measuring tube is the same as the connecting caliber of the lower end of the constant temperature mechanism, and a group of threads on the measuring tube can be mutually matched and screwed together.
5. A thermocouple temperature measurement apparatus as set forth in claim 1 wherein: the thermocouple wire is a tungsten-rhenium thermocouple wire.
6. A thermocouple temperature measurement apparatus as set forth in claim 1 wherein: the two ceramic rollers are installed in the shell through two installation shafts, and two groups of limiting grooves used for being clamped into two ends of the two installation shafts are arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322740609.XU CN220853918U (en) | 2023-10-12 | 2023-10-12 | Thermocouple temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322740609.XU CN220853918U (en) | 2023-10-12 | 2023-10-12 | Thermocouple temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220853918U true CN220853918U (en) | 2024-04-26 |
Family
ID=90748838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322740609.XU Active CN220853918U (en) | 2023-10-12 | 2023-10-12 | Thermocouple temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220853918U (en) |
-
2023
- 2023-10-12 CN CN202322740609.XU patent/CN220853918U/en active Active
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