CN213364056U - Sleeve type thermocouple - Google Patents
Sleeve type thermocouple Download PDFInfo
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- CN213364056U CN213364056U CN202022613906.4U CN202022613906U CN213364056U CN 213364056 U CN213364056 U CN 213364056U CN 202022613906 U CN202022613906 U CN 202022613906U CN 213364056 U CN213364056 U CN 213364056U
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- sleeve
- thermocouple
- protective sleeve
- protective
- detection part
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Abstract
The utility model discloses a sleeve type thermocouple, which comprises a thermocouple; the thread sleeve is arranged on the thermocouple and sleeved outside the detection part of the thermocouple; the outer cylindrical surface of the threaded sleeve is provided with an external thread; the protection sleeve is sleeved on the detection part of the thermocouple, and a gap is reserved between the inner wall of the protection sleeve and the detection part of the thermocouple; the inner wall of the top end of the protective sleeve is provided with an internal thread; the protective sleeve is in threaded connection with the threaded sleeve; the outer surface of the top of the protective sleeve is provided with an external thread; the protective sleeve is internally provided with a deformation detection part, and the deformation detection part is exposed out of the end face of the top of the protective sleeve. The utility model discloses can be used for hypervelocity air current or fluidic detection to guarantee its life and detect the precision.
Description
Technical Field
The utility model relates to a check out test set field, concretely relates to bushing type thermocouple.
Background
The thermocouple is a common temperature measuring element in a temperature measuring instrument, can directly measure 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.
The temperature measuring part of the thermocouple is fragile, and the thermocouple is easy to deform due to the impact of air flow or fluid when detecting ultrahigh-speed air flow or fluid, so that the service life of the thermocouple is greatly shortened, and the detection result has deviation and even is directly damaged.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the present invention provides a sleeve type thermocouple, which can be used for detecting ultra-high speed airflow or fluid, and can ensure the service life and detection accuracy.
The purpose of the utility model is realized through such technical scheme:
a sleeve-type thermocouple, comprising,
a thermocouple;
the thread sleeve is arranged on the thermocouple and sleeved outside the detection part of the thermocouple; the outer cylindrical surface of the threaded sleeve is provided with an external thread;
the protection sleeve is sleeved on the detection part of the thermocouple, and a gap is reserved between the inner wall of the protection sleeve and the detection part of the thermocouple; the inner wall of the top end of the protective sleeve is provided with an internal thread; the protective sleeve is in threaded connection with the threaded sleeve; the outer surface of the top of the protective sleeve is provided with an external thread;
the protective sleeve is internally provided with a deformation detection part, and the deformation detection part is exposed out of the end face of the top of the protective sleeve.
Furthermore, a limiting bulge is arranged at the top end of the threaded sleeve; the limiting bulge is abutted to the top end of the protective sleeve.
Furthermore, the lower surface of the limiting bulge is provided with a buffer gasket.
Furthermore, heat conduction oil and gas are filled in a gap between the protective sleeve and the detection part of the thermocouple; the upper surface of the buffer gasket is provided with a groove for communicating the inner side and the outer side of the buffer gasket.
Furthermore, a plurality of channels are arranged in the protective sleeve; the two ends of the channel are communicated with the end face of the top end of the protective sleeve; the channel profile is the same as the longitudinal section of the protective sleeve; the plurality of channels are uniformly distributed in a circumferential array around the axis of the protective sleeve;
the deformation detection part comprises a plurality of plug wires which are distributed in the channel one by one; the plug wire is fixedly connected with the bottom of the channel; the two ends of the plug wire are flush with the end face of the protective sleeve.
Further, the channel cross-section is circular; a gap is reserved between the outer surface of the plug wire and the inner wall of the channel; the plug wire is a rigid wire.
Furthermore, the installation sleeve is further included, and an internal thread is arranged on the inner wall of the installation sleeve; the protective sleeve is sleeved in the mounting sleeve and is fixedly connected with the mounting sleeve in a seamless mode; the outer surface of the top end of the protective sleeve is provided with a limiting piece opposite to the top end of the mounting sleeve; and a sealing gasket is arranged on the lower surface of the limiting part.
Further, the outer surface of the bottom end of the protective sleeve is in smooth transition.
Further, the outer surface of the protective sleeve is coated with a wear-resistant layer.
Further, the cross section of the lower part of the protective sleeve is in a fusiform shape.
In the above technical scheme of having adopted, the utility model discloses following advantage has:
the protective sleeve is wrapped on the outer side of the detection part of the thermocouple, so that high-speed airflow or liquid can be prevented from impacting the detection part, and the detection part is prevented from being damaged or deformed; the gap between the protective cover and the detection part can be used as the deformation allowance of the protective cover; the deformation amount of the protective sleeve can be detected through the deformation detection part, so that the detection part is prevented from being damaged due to excessive deformation of the protective sleeve. The protective sleeve is connected with the thermocouple through threads, and the thermocouple can be continuously used after the protective sleeve is replaced after the deformation of the protective sleeve is too large.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The drawings of the utility model are as follows:
fig. 1 is a schematic sectional structure view of a sleeve type thermocouple in the embodiment.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is an enlarged schematic view of B in fig. 1.
FIG. 4 is a schematic view of the cross section C-C in FIG. 1.
In the figure: 1. a thermocouple; 11. a detection unit; 2. a threaded sleeve; 3. a protective sleeve; 4. inserting wires; 5. a limiting bulge; 6. a cushion washer; 7. heat conducting oil; 8. a gas; 9. a channel; 10. installing a sleeve; 100. a limiting member; 200. a sealing gasket; 300. the wall of the device.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example (b):
as shown in fig. 1 to 4, a sleeve type thermocouple 1, including,
a thermocouple 1;
the threaded sleeve 2 is arranged on the thermocouple 1 and sleeved on the detection part 11 of the thermocouple 1; the outer cylindrical surface of the threaded sleeve 2 is provided with an external thread;
the protection sleeve 3 is sleeved on the detection part 11 of the thermocouple 1, and a gap is reserved between the inner wall of the protection sleeve 3 and the detection part 11 of the thermocouple 1; the inner wall of the top end of the protective sleeve 3 is provided with internal threads; the protective sleeve 3 is in threaded connection with the threaded sleeve 2; the outer surface of the top of the protective sleeve 3 is provided with an external thread;
the protection sleeve 3 is internally provided with a deformation detection part 11, and part of the deformation detection part 11 is exposed on the end surface of the top of the protection sleeve 3.
The protective sleeve 3 is wrapped outside the detection part 11 of the thermocouple 1, so that high-speed airflow or liquid can be prevented from impacting the detection part 11, and the detection part 11 is prevented from being damaged or deformed; the gap between the protective cover and the detection part 11 can be used as the deformation allowance of the protective cover 3; the deformation amount of the protector 3 can be detected by the deformation detecting portion 11, thereby preventing the detecting portion 11 from being damaged by excessive deformation of the protector 3. The protective sleeve 3 is connected with the thermocouple 1 through threads, and the thermocouple 1 can be used after the protective sleeve 3 is replaced after the deformation of the protective sleeve 3 is too large.
In this embodiment, the top end of the threaded sleeve 2 is provided with a limiting protrusion 5; the limiting bulge 5 is abutted against the top end of the protective sleeve 3.
The stability of the connection of the protective sleeve 3 and the thermocouple 1 can be ensured through the limiting bulge 5.
In this embodiment, the lower surface of the limiting protrusion 5 is provided with a buffer gasket 6.
Through blotter (rubber material), can place the hard contact of safety cover top and spacing arch 5.
In this embodiment, the gap between the protective sheath 3 and the detection part 11 of the thermocouple 1 is filled with heat conduction oil 7 and gas 8; the upper surface of the cushion ring 6 is provided with a groove (not shown) for communicating the inner side and the outer side of the cushion ring 6.
The heat conducting oil 7 can transfer the heat in the protective cover to the detection part 11, so that the detection part 11 can detect the temperature quickly and accurately. The gas 8 may provide a space to be compressed when the boot is deformed. When the temperature of the gas 8 rises and the pressure becomes high, part of the gas 8 can be communicated with the external atmosphere through the groove, so that the pressure in the protective cover is reduced.
In this embodiment, a plurality of channels 9 are provided in the protective sleeve 3; the two ends of the channel 9 are communicated with the end surface of the top end of the protective sleeve 3; the profile of the channel 9 is the same as the longitudinal section of the protective sleeve 3; a plurality of said channels 9 are uniformly distributed circumferentially in an array around the axis of the sheath 3;
the deformation detection part 11 comprises a plurality of plug wires 4, and the plug wires 4 are distributed in the channel 9 one by one; the plug wire 4 is fixedly connected with the bottom of the channel 9; and two ends of the plug wire 4 are flush with the end surface of the protective sleeve 3.
After the protective cover deforms, one side of the protective cover is compressed, the other side of the protective cover is stretched, a height difference is formed between the tail end of the plug wire 4 in the protective cover and the top end of the protective cover at the moment, workers can judge whether the protective cover deforms or not and judge the deformation amount of the protective cover by observing whether the end face of the plug wire 4 is located in or out of the protective cover or flush with the end face of the protective cover.
The protective cover can adopt the cast mode, and passageway 9 adopts the ceramic wire packing of pre-firing, and the protective cover after the casting passes through high frequency vibration for the ceramic wire of casting inside is smashed, and it can to discharge through passageway 9 at last. After the plug wires 4 are completely inserted into the channel 9, the inner surface and the outer surface of the bottom of the protective cover are extruded by using a press machine, the plug wires 4 are fixed by the deformed bottom of the protective cover, and the rest plug wires 4 are not fixedly connected with the inner wall of the channel 9.
In this embodiment, the cross section of the channel 9 is circular; a gap is reserved between the outer surface of the plug wire 4 and the inner wall of the channel 9; the plug wire 4 is a rigid wire.
The plug wire 4 may be made of a material having less elasticity or a material having an uneven elasticity, such as carbon fiber.
In the embodiment, the device further comprises an installation sleeve 10, wherein the inner wall of the installation sleeve is provided with an internal thread; the protective sleeve 3 is sleeved in the mounting sleeve 10 and is fixedly connected with the mounting sleeve 10 in a seamless manner; the outer surface of the top end of the protective sleeve 3 is provided with a limiting piece 100 opposite to the top end of the mounting sleeve 10; the lower surface of the limiting member 100 is provided with a sealing gasket 200.
The installation of the thermocouple 1 through the installation sleeve 10 can ensure the accuracy of installation. The gas 8 inside the apparatus is prevented from leaking out by the limiting member 100 and the sealing washer 200.
In this embodiment, the outer surface of the bottom end of the sheath 3 is smoothly transited.
The smooth transition reduces the impact force telling the gas 8 or fluid to the shield.
In this embodiment, the outer surface of the protective sleeve 3 is coated with a wear-resistant layer.
The wear resistant layer may employ a cobalt-based metal oxide.
In this embodiment, the cross section of the lower part of the protective sheath 3 is shuttle-shaped.
The fusiform can reduce the impact force, can improve safety cover protecting against shock intensity simultaneously.
The sleeve type thermocouple 1 of the present embodiment is used by mounting the mounting sleeve 10 to the equipment wall 300; a certain amount of heat conducting oil 7 is injected into the protective sleeve 3, and then the protective sleeve 3 is installed on the thermocouple 1.
And finally, inserting the protective sleeve 3 into the mounting sleeve 10, and screwing the protective sleeve 3 to ensure that the fusiform surface of the protective sleeve 3 is just opposite to the flow direction of the gas 8, so that the windward area is reduced.
After using for a period of time, after discovering that protective sheath 3 warp to a certain extent through plug wire 4 terminal surface, it can to change new safety cover.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. A sleeve type thermocouple is characterized by comprising,
a thermocouple;
the thread sleeve is arranged on the thermocouple and sleeved outside the detection part of the thermocouple; the outer cylindrical surface of the threaded sleeve is provided with an external thread;
the protection sleeve is sleeved on the detection part of the thermocouple, and a gap is reserved between the inner wall of the protection sleeve and the detection part of the thermocouple; the inner wall of the top end of the protective sleeve is provided with an internal thread; the protective sleeve is in threaded connection with the threaded sleeve; the outer surface of the top of the protective sleeve is provided with an external thread;
the protective sleeve is internally provided with a deformation detection part, and the deformation detection part is exposed out of the end face of the top of the protective sleeve.
2. The bushing type thermocouple of claim 1, wherein a limit protrusion is provided at a top end of the threaded bushing; the limiting bulge is abutted to the top end of the protective sleeve.
3. The bushing type thermocouple of claim 2, wherein a lower surface of the stopper protrusion is provided with a cushion washer.
4. The bushing type thermocouple of claim 3, wherein a gap between the protective sheath and the sensing part of the thermocouple is filled with heat transfer oil and gas; the upper surface of the buffer gasket is provided with a groove for communicating the inner side and the outer side of the buffer gasket.
5. The bushing thermocouple of claim 1, wherein a plurality of passages are provided in said protective sheath; the two ends of the channel are communicated with the end face of the top end of the protective sleeve; the channel profile is the same as the longitudinal section of the protective sleeve; the plurality of channels are uniformly distributed in a circumferential array around the axis of the protective sleeve;
the deformation detection part comprises a plurality of plug wires which are distributed in the channel one by one; the plug wire is fixedly connected with the bottom of the channel; the two ends of the plug wire are flush with the end face of the protective sleeve.
6. The spoolie thermocouple of claim 5, wherein the channel cross section is circular; a gap is reserved between the outer surface of the plug wire and the inner wall of the channel; the plug wire is a rigid wire.
7. The bushing type thermocouple of claim 1, further comprising a mounting sleeve, an inner wall of which is provided with an internal thread; the protective sleeve is sleeved in the mounting sleeve and is fixedly connected with the mounting sleeve in a seamless mode; the outer surface of the top end of the protective sleeve is provided with a limiting piece opposite to the top end of the mounting sleeve; and a sealing gasket is arranged on the lower surface of the limiting part.
8. The bushing thermocouple of claim 1, wherein an outer surface of the protective sheath bottom end transitions smoothly.
9. The bushing thermocouple of claim 1, wherein an outer surface of said protective sheath is coated with a wear resistant layer.
10. The bushing thermocouple of any one of claims 1 to 9, wherein said protective sheath has a lower cross-section that is fusiform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022613906.4U CN213364056U (en) | 2020-11-12 | 2020-11-12 | Sleeve type thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022613906.4U CN213364056U (en) | 2020-11-12 | 2020-11-12 | Sleeve type thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213364056U true CN213364056U (en) | 2021-06-04 |
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ID=76134303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022613906.4U Active CN213364056U (en) | 2020-11-12 | 2020-11-12 | Sleeve type thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213364056U (en) |
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2020
- 2020-11-12 CN CN202022613906.4U patent/CN213364056U/en active Active
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