CN216621502U

CN216621502U - Sealed leakage-resistant thermocouple

Info

Publication number: CN216621502U
Application number: CN202220242343.9U
Authority: CN
Inventors: 郑浩; 杜映月; 霍娜
Original assignee: Shenyang Xinkaifa Thermoelectric Measurement And Control Instrument Co ltd
Current assignee: Shenyang Xinkaifa Thermoelectric Measurement And Control Instrument Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-05-27
Anticipated expiration: 2032-01-29

Abstract

The utility model relates to the technical field of thermocouples, in particular to a sealed leakage-resistant thermocouple, which comprises an outer sleeve, a thermocouple sleeved in the outer sleeve and a ball seat, wherein a flange is fixedly connected to the outer wall of the lower part of the ball seat; a fixing groove is formed in the universal ball, the outer sleeve penetrates through the fixing groove, and a second limiting structure used for limiting the outer sleeve is arranged in the fixing groove. According to the utility model, the outer sleeve can be driven to rotate freely through the universal ball, the position of the lower end of the outer sleeve can be adjusted, the temperature measurement range is wider, the temperature measurement is more accurate, the outer sleeve can be adjusted in a vertical telescopic manner through the fixing groove formed in the universal ball, so that the height of the lower end of the outer sleeve is adjusted, and the temperature measurement range is further expanded.

Description

Sealed leakage-resistant thermocouple

Technical Field

The utility model relates to the technical field of thermocouples, in particular to a sealed leakage-resistant thermocouple.

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. The shapes of various thermocouples are different according to requirements, for example, some thermocouples are provided with flanges which are convenient to install and fix, but the flanges are directly fastened with outer sleeves of the thermocouples, so that the adjustment performance of the thermocouples is limited, and the current requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a sealed leakage-proof thermocouple, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a sealed leakage-resistant thermocouple comprises an outer sleeve, a thermocouple sleeved in the outer sleeve and a ball seat, wherein a flange is fixedly connected to the outer wall of the lower portion of the ball seat, a limiting ring is fixedly connected to the inner wall of the lower portion of the ball seat, a universal ball is arranged above the limiting ring, and a first limiting structure used for limiting the universal ball is arranged in the ball seat; a fixing groove is formed in the universal ball, the outer sleeve penetrates through the fixing groove, and a second limiting structure used for limiting the outer sleeve is arranged in the fixing groove.

Optionally, first limit structure includes first spacing swivel nut, first spacing swivel nut threaded connection be in the upper portion of ball seat, the lower part of first spacing swivel nut is provided with the metallic gasket, the upper portion of spacing ring is provided with down the metallic gasket, go up the metallic gasket with the inboard of metallic gasket all with the outer wall of universal ball is contradicted down.

Optionally, the second limit structure includes the spacing swivel nut of second, the spacing swivel nut threaded connection of second be in the inner wall on fixed slot upper portion, the lower part of the spacing swivel nut of second is contradicted and is had the clamping ring, the lower part of clamping ring is contradicted and is had the leak protection of at least one deck to seal up, the sealed inboard of leak protection with the outer wall of universal ball is contradicted.

Optionally, the limiting device further comprises a first conical surface arranged at the lower part of the second limiting threaded sleeve, and a second conical surface which is abutted against the first conical surface is arranged at the upper part of the pressing ring.

Optionally, a plurality of buffer grooves are formed on the first conical surface.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the outer sleeve can be driven to rotate freely through the universal ball, and the position of the lower end of the outer sleeve can be adjusted, so that the temperature measurement range is wider, and the temperature measurement is more accurate.

2. According to the utility model, the fixing groove is formed in the universal ball, so that the outer sleeve can be adjusted in a telescopic manner up and down, the height of the lower end of the outer sleeve is adjusted, and the temperature measuring range is further expanded.

Drawings

FIG. 1 is a schematic view of a ball seat and a universal ball according to the present invention;

FIG. 2 is a schematic view of another embodiment of the ball seat and the universal ball of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic structural view taken along A-A in FIG. 3;

FIG. 5 is an enlarged view of a selected portion of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic structural view of a second stop nut according to the present invention;

fig. 7 is a schematic structural view of the pressure ring of the present invention.

In the figure: 1. an outer sleeve; 2. a ball seat; 3. a flange; 4. a limiting ring; 5. a universal ball; 6. a first limit structure; 61. a first limit thread insert; 62. an upper metal gasket; 63. a lower metal seal gasket; 7. fixing grooves; 8. a second limit structure; 81. a second limit threaded sleeve; 82. pressing a ring; 83. a leak-proof seal; 84. a first conical surface; 85. a second tapered surface; 86. a buffer tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 7, the present invention provides a sealed leakage-resistant thermocouple, including an outer sleeve 1 and a thermocouple sleeved inside the outer sleeve 1, and the thermocouple belongs to the prior art, and is not improved in this embodiment and is not described in detail.

Still include ball seat 2, the outer wall fixedly connected with flange 3 of 2 lower parts of ball seat, the convenience is fixed this thermocouple installation on equipment, and inner wall fixedly connected with spacing ring 4 of 2 lower parts of ball seat, the top of spacing ring 4 are provided with universal ball 5, and the external diameter of universal ball 5 is identical with the internal diameter of ball seat 2, and universal ball 5 can be in ball seat 2 free rotation.

The ball seat 2 is internally provided with a first limiting structure 6 for limiting the universal ball 5.

As one embodiment, the first limiting structure 6 includes a first limiting screw sleeve 61, the first limiting screw sleeve 61 is screwed on the upper portion of the ball seat 2, an upper metal sealing gasket 62 is disposed on the lower portion of the first limiting screw sleeve 61, a lower metal sealing gasket 63 is disposed on the upper portion of the limiting ring 4, the inner sides of the upper metal sealing gasket 62 and the lower metal sealing gasket 63 are both abutted against the outer wall of the universal ball 5, the sealing performance between the universal ball 5 and the upper metal sealing gasket 62 can be improved through the upper metal sealing gasket 62 and the lower metal sealing gasket 63, and the sealing strength between the upper metal sealing gasket 62, the lower metal sealing gasket 63 and the universal ball 5 is improved through the compression of the first limiting screw sleeve 61.

Fixing groove 7 has been seted up to universal ball 5's inside, and outer tube 1 runs through in fixing groove 7, along with universal ball 5's rotation, can adjust the angle of outer tube 1, because the thermocouple temperature measurement point is in the position of outer tube 1 lower extreme, consequently can adjust the position of outer tube 1 lower extreme, makes the scope of temperature measurement point temperature measurement wider, and the temperature measurement is more accurate.

The fixing groove 7 is provided with a second limiting structure 8 for limiting the outer sleeve 1.

As one embodiment, the second limiting structure 8 includes a second limiting screw 81, the second limiting screw 81 is screwed on the inner wall of the upper portion of the fixing groove 7, the lower portion of the second limiting screw 81 is abutted with a pressing ring 82, the lower portion of the pressing ring 82 is abutted with at least one layer of leakage-proof sealing gasket 83, the inner side of the leakage-proof sealing gasket 83 is abutted with the outer wall of the universal ball 5, the sealing performance between the leakage-proof sealing gasket 83 and the outer sleeve 1 can be improved, and the sealing strength between the leakage-proof sealing gasket 83 and the outer sleeve 1 is improved by the compression of the second limiting screw 81.

As one embodiment, the outer sleeve further comprises a first conical surface 84 arranged at the lower part of the second limit screw sleeve 81, the upper part of the press ring 82 is provided with a second conical surface 85 which is abutted against the first conical surface 84, the first conical surface 84 and the second conical surface 85 are extruded and cut along with the downward screwing of the second limit screw sleeve 81, and the lower part of the second limit screw sleeve 81 can be slightly deformed inwards due to the plurality of buffer grooves 86 arranged on the first conical surface 84, so that the outer sleeve 1 is extruded, the sleeving strength with the outer sleeve 1 is improved, and the outer sleeve 1 is prevented from sliding along the axial direction. After the second limiting screw sleeve 81 is unscrewed upwards, the outer sleeve 1 can slide axially and stretch, so that the height of the lower end of the outer sleeve 1, namely the temperature measuring point, is adjusted, and the temperature measuring range is further expanded.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sealed leakage-resistant thermocouple comprises an outer sleeve (1) and a thermocouple sleeved in the outer sleeve (1), and is characterized by further comprising a ball seat (2), wherein a flange (3) is fixedly connected to the outer wall of the lower portion of the ball seat (2), a limiting ring (4) is fixedly connected to the inner wall of the lower portion of the ball seat (2), a universal ball (5) is arranged above the limiting ring (4), and a first limiting structure (6) used for limiting the universal ball (5) is arranged in the ball seat (2); a fixing groove (7) is formed in the universal ball (5), the outer sleeve (1) penetrates through the fixing groove (7), and a second limiting structure (8) used for limiting the outer sleeve (1) is arranged in the fixing groove (7).

2. The sealed leakage-proof thermocouple according to claim 1, wherein the first limiting structure (6) comprises a first limiting threaded sleeve (61), the first limiting threaded sleeve (61) is in threaded connection with the upper portion of the ball seat (2), an upper metal sealing gasket (62) is arranged at the lower portion of the first limiting threaded sleeve (61), a lower metal sealing gasket (63) is arranged at the upper portion of the limiting ring (4), and the inner sides of the upper metal sealing gasket (62) and the lower metal sealing gasket (63) are abutted against the outer wall of the universal ball (5).

3. The sealing leakage-proof thermocouple according to claim 1, wherein the second limiting structure (8) comprises a second limiting threaded sleeve (81), the second limiting threaded sleeve (81) is in threaded connection with the inner wall of the upper portion of the fixing groove (7), a pressing ring (82) is abutted to the lower portion of the second limiting threaded sleeve (81), at least one layer of leakage-proof sealing gasket (83) is abutted to the lower portion of the pressing ring (82), and the inner side of the leakage-proof sealing gasket (83) is abutted to the outer wall of the universal ball (5).

4. The sealing leakage-proof thermocouple according to claim 3, further comprising a first conical surface (84) arranged at the lower part of the second limiting threaded sleeve (81), and a second conical surface (85) which is abutted against the first conical surface (84) is formed at the upper part of the pressing ring (82).

5. The sealed leakage-stopping thermocouple according to claim 4, wherein said first tapered surface (84) is provided with a plurality of buffer grooves (86).