CN211205557U

CN211205557U - Sealing device of thermocouple

Info

Publication number: CN211205557U
Application number: CN201922181114.1U
Authority: CN
Inventors: 金莹弟
Original assignee: Xi'an Xipai Measurement And Control Technology Co ltd
Current assignee: Xi'an Xipai Measurement And Control Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-07
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a sealing device of thermocouple, including the connection terminal box, the fixed protective case of having installed in bottom of connection terminal box, and the outside cover of protective case is equipped with and rotates the swivel nut, the bottom of rotating the swivel nut has cup jointed the pressure and has held the board, and presses the fixed rubber packing pad of having installed in bottom of holding the board, the outside fixed mounting of protective case has construction bolt, and construction bolt's outside cover is equipped with the pipe-line installation mouth, welded fastening has the outer sleeve on the bottom outer wall of protective case, the inserting groove has been seted up to the inside of outer sleeve. The utility model discloses a set up first sealed rubber ring extrusion and fill between protective sleeve and electrode sleeve, set up grafting sleeve block inside the inserting groove, simultaneously, set up the fastening swivel nut and pass through the outside of threaded fixation at the outer sleeve for the device connects firmly and sealed tight, and sets up the spacing ring and blocks the fastening swivel nut, and the removal of restriction fastening swivel nut has improved the device's sealed effect greatly.

Description

Sealing device of thermocouple

Technical Field

The utility model relates to a thermocouple technical field specifically is a sealing device of 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 thermocouple is used in high-temperature and high-pressure liquid or gas generally due to special working environment, the sealing performance of the thermocouple device must be guaranteed due to severe environment, external water and gas are prevented from entering the device, and the accuracy of the device measurement is influenced;

in addition, when the existing thermocouple works, a mounting bolt is mostly sleeved on the main body, and the thermocouple is connected with a component on a pipeline waiting to be measured through the bolt, so that when the thermocouple is used, the inside of the pipeline is easily communicated with the outside through a gap at the joint, the temperature environment in the pipeline is influenced, and the deviation is caused to the measurement result.

In the prior art, a sealing device of a thermocouple disclosed by the publication number CN202041310U comprises a mounting bolt, a nut, a conical bushing and a corrugated pipe, wherein at least a part of the thermocouple is arranged in a containing cavity of the mounting bolt and the nut, the corrugated pipe is sleeved on the thermocouple, the conical bushing is sleeved on the corrugated pipe and is arranged in a space formed when the mounting bolt is combined with the nut, the device has the characteristic of simple structure, but because the sealing staggered part is too few, the nut is easy to loosen in the long-time use process to form a gap, and external substances easily enter the thermocouple from the tiny connecting gap, the work of the thermocouple is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device of thermocouple to the sealing device structure of the present thermocouple that proposes in solving above-mentioned background art is too simple, leads to sealed effect poor, and the thermocouple is too simple with being connected of the pipeline that awaits measuring when using, makes the pipeline inside receive external environment influence easily, leads to the unsafe problem of measuring result.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing device of a thermocouple comprises a wiring terminal box, wherein a protective sleeve is fixedly arranged at the bottom of the wiring terminal box, a rotary threaded sleeve is sleeved outside the protective sleeve, a pressing plate is sleeved at the bottom of the rotary threaded sleeve, a rubber sealing gasket is fixedly arranged at the bottom of the pressing plate, a mounting bolt is fixedly arranged outside the protective sleeve, a pipeline mounting opening is sleeved outside the mounting bolt, an outer sleeve is welded and fixed on the outer wall of the bottom end of the protective sleeve, an inserting groove is formed in the outer sleeve, an inner sleeve is inserted in the bottom of the protective sleeve, a first sealing rubber ring is sleeved outside the inner sleeve, an electrode sleeve is welded and fixed at the bottom of the inner sleeve, an inserting sleeve is welded and fixed on the outer wall of the upper end of the electrode sleeve, a fastening threaded sleeve is sleeved outside the electrode sleeve, and a second sealing rubber ring is placed inside the fastening threaded sleeve, and a limiting ring is arranged below the fastening screw sleeve and sleeved outside the electrode sleeve.

Preferably, the outer wall of the protective sleeve is uniformly provided with threads, the inner wall of the rotary threaded sleeve is uniformly provided with threads, the rotary threaded sleeve is in a threaded rotating structure through the meshing of the threads and the protective sleeve, the pressing plate and the rotary threaded sleeve are in a rotating structure, and the front section of the pressing plate is in a circular arc shape.

Preferably, the inner wall of the pipeline mounting port is uniformly provided with threads, the outer wall of the mounting bolt is uniformly provided with threads, and the mounting bolt is in a threaded connection structure with the pipeline mounting port through the threads.

Preferably, the bottom of protective case and the top outer wall of electrode sleeve have seted up the draw-in groove symmetrically, and the draw-in groove is the design of ring form, the cross-section of first sealing rubber ring is the design of T font, first sealing rubber ring is inlayed and is installed in the draw-in groove of seting up on protective case bottom and electrode sleeve top, and the size of first sealing rubber ring slightly is greater than the size of draw-in groove.

Preferably, the top of the insertion sleeve is designed to be protruded outwards, the insertion sleeve is inserted into the insertion groove, the outer wall of the outer sleeve is uniformly provided with threads, the inner wall of the fastening threaded sleeve is uniformly provided with threads, the fastening threaded sleeve and the outer sleeve are designed to be in a threaded connection structure through threads, the bottom of the outer sleeve is inserted between the fastening threaded sleeve and the insertion sleeve, the fastening threaded sleeve and the electrode sleeve are designed to be in a rotating structure, and the fastening threaded sleeve and the electrode sleeve are designed to be in a sliding structure.

Preferably, the outer wall of the electrode sleeve is provided with a clamping groove which is annularly arranged right below the fastening threaded sleeve, and the limiting ring is clamped in the clamping groove arranged on the electrode sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. pack between protective case and electrode sleeve through setting up the extrusion of first sealed rubber ring for the junction between protective case and the electrode sleeve is sealed, set up the grafting sleeve block inside the inserting groove, make the junction firm in connection, and simultaneously, set up the outside that the fastening swivel nut passes through the threaded fixation at the outer sleeve, make the device connect firmly, and set up the spacing ring and block the fastening swivel nut, the removal of restriction fastening swivel nut, make this dress sealed tight and firm, the sealed effect of the device has been improved greatly.

2. The rotary screw sleeve is in threaded connection with the protective sleeve, so that the rotary screw sleeve can extrude the pressing and holding plate downwards, the front view section of the pressing and holding plate is arc-shaped, the rubber sealing gasket is tightly attached to the outer wall of the pipeline under the extrusion effect of the pressing and holding plate, the connecting part of the device and the pipeline to be measured is tightly sealed, the inner side and the outer side of the pipeline are effectively prevented from being tightly sealed, air leakage and other conditions occur, and the measurement accuracy of the thermocouple is greatly improved.

Drawings

FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;

FIG. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is a schematic view of the mechanism of the present invention showing a front view, a sectional view and a split;

fig. 4 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

In the figure: 1. a terminal block; 2. protecting the sleeve; 3. rotating the threaded sleeve; 4. pressing and holding the plate; 5. a rubber gasket; 6. installing a bolt; 7. a pipeline mounting port; 8. an outer sleeve; 9. inserting grooves; 10. an inner barrel; 11. a first sealing rubber ring; 12. an electrode bushing; 13. inserting a sleeve; 14. fastening a threaded sleeve; 15. a second sealing rubber ring; 16. a limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides three embodiments:

the first embodiment is as follows:

a sealing device of a thermocouple comprises a wiring terminal box 1, a protective sleeve 2 is fixedly arranged at the bottom of the wiring terminal box 1, and the outer side of the protective sleeve 2 is sleeved with a rotary threaded sleeve 3, the bottom of the rotary threaded sleeve 3 is sleeved with a pressing plate 4, the bottom of the pressing plate 4 is fixedly provided with a rubber gasket 5, the outer side of the protective sleeve 2 is fixedly provided with a mounting bolt 6, and the outer side of the mounting bolt 6 is sleeved with a pipeline mounting opening 7, the inner wall of the pipeline mounting opening 7 is uniformly provided with threads, the outer wall of the mounting bolt 6 is uniformly provided with threads, the mounting bolt 6 and the pipeline mounting opening 7 are designed into a threaded connection structure through the threads, the device is rotated, under the meshing action of the threads, the mounting bolt 6 can be screwed into the pipeline mounting opening 7 to fix the device on the pipeline mounting opening 7, so that the device is mounted on a pipeline to be tested and fixedly connected.

An outer sleeve 8 is fixedly welded on the outer wall of the bottom end of the protective sleeve 2, an inserting groove 9 is formed in the outer sleeve 8, an inner cylinder 10 is inserted in the bottom of the protective sleeve 2, a first sealing rubber ring 11 is sleeved on the outer side of the inner cylinder 10, an electrode sleeve 12 is fixedly welded on the bottom of the inner cylinder 10, an inserting sleeve 13 is fixedly welded on the outer wall of the upper end of the electrode sleeve 12, a fastening screw sleeve 14 is sleeved on the outer side of the electrode sleeve 12, a second sealing rubber ring 15 is placed inside the fastening screw sleeve 14, a limiting ring 16 is installed below the fastening screw sleeve 14, and the limiting ring 16 is sleeved on the outer side of the electrode sleeve 12.

Example two:

the bottom of protective case 2 and the top outer wall of electrode sleeve 12 have seted up the draw-in groove on the symmetry, and the draw-in groove is the ring form design, the cross-section of first sealing rubber ring 11 is the design of T font, first sealing rubber ring 11 inlays and installs in the draw-in groove of seting up on protective case 2 bottom and electrode sleeve 12 top, and the size of first sealing rubber ring 11 slightly is greater than the size of draw-in groove, first sealing rubber ring 11 fills and installs in the draw-in groove of seting up between protective case 2 and electrode sleeve 12, when protective case 2 is connected with electrode sleeve 12, receive the squeezing action of junction, first sealing rubber ring 11 can be deformed and fill in the junction of protective case 2 and electrode sleeve 12, seal and fill this position, make this department sealed tight.

The top of the inserting sleeve 13 is designed to be outwards protruded, the inserting sleeve 13 is inserted into the inserting groove 9, and is inserted into the inserting groove 9 through the inserting sleeve 13 in a clamping manner, so that the outer sleeve 8 and the inserting sleeve 13 are tightly connected, the sealing tightness of the device is effectively improved, the outer wall of the outer sleeve 8 is uniformly provided with threads, the inner wall of the fastening screw sleeve 14 is uniformly provided with threads, the fastening screw sleeve 14 and the outer sleeve 8 are designed to be in a threaded connection structure through the threads, the bottom of the outer sleeve 8 is inserted between the fastening screw sleeve 14 and the inserting sleeve 13, the fastening screw sleeve 14 and the electrode sleeve 12 are designed to be in a rotating structure, the fastening screw sleeve 14 and the electrode sleeve 12 are designed to be in a sliding structure, the fastening screw sleeve 14 can freely move outside the electrode sleeve 12, when the protective sleeve 2 and the electrode sleeve 12 of the device are connected, under the meshing action of the threads by rotating the fastening screw sleeve 14, make fastening swivel nut 14 rotate and twist on outer sleeve 8, make the device fixed firm through threaded connection, simultaneously, through threaded connection for exert the extrusion force for the inside of the connection position of device, the device of being convenient for is sealed, and the position through multiunit connection position is crisscross to be overlapped, prolongs the length of the device junction greatly, and the inside probability of effectual external material entering the device of reduction, the effectual external material that prevents gets into the device is inside to cause the influence to the device.

The draw-in groove has been seted up on the outer wall of electrode sleeve 12, and the draw-in groove is that ring shape is seted up under fastening swivel nut 14, and the draw-in groove of seting up on electrode sleeve 12 is held in the spacing ring 16 block, and during the use, spacing ring 16 block is restricted fastening swivel nut 14 on electrode sleeve 12, prevents in long-time use, and because reasons such as vibrations lead to fastening swivel nut 14 to rotate not hard up, improved the device's seal stability greatly.

Example three:

the outer wall of the protective sleeve 2 is uniformly provided with threads, the inner wall of the rotary screw sleeve 3 is uniformly provided with threads, the rotary screw sleeve 3 is meshed with the protective sleeve 2 through the threads and is designed into a thread rotating structure, the pressing plate 4 and the rotary screw sleeve 3 are designed into a rotating structure, and the front cross section of the pressing plate 4 is designed into a circular arc shape, so that the pressing plate 4 is more attached to the outer wall of the pipeline to be tested in size, the device can clamp and attach the rubber sealing gasket 5 to the outer wall of the pipeline to be tested more tightly, the sealing tightness between the device and the pipeline to be tested is greatly improved, when the device is used, a worker rotates the rotary screw sleeve 3, the rotary screw sleeve 3 moves downwards on the protective sleeve 2 under the meshing action of the threads, so as to drive the pressing plate 4 to move downwards, the rubber sealing gasket 5 at the bottom of the pressing plate 4 is extruded and attached to the outer wall of the pipeline to be tested, and the, make 5 deformation of rubber seal pad cover the upper surface at the junction, seal the junction, the effectual pipeline that prevents is lost heart, leads to causing the influence to the measuring result.

The working principle is as follows: when the device works, when an operator needs to measure the temperature inside a pipeline, the operator rotates the mounting bolt 6 to enter the pipeline mounting opening 7 under the meshing action of the threads by rotating, so that the device is inserted into the pipeline to be measured, then, the operator rotates the rotary screw sleeve 3, the rotary screw sleeve 3 drives the pressing plate 4 to move downwards by meshing the threads on the inner wall of the rotary screw sleeve 3 with the threads on the outer wall of the protective sleeve 2, the rubber sealing gasket 5 is extruded and attached to the outer wall of the pipeline to be measured through the pressing plate 4, and the rubber sealing gasket 5 is deformed and covered at the connecting part of the device and the pipeline to be measured;

when the device is used, the fastening screw sleeve 14 is connected with the outer side of the outer sleeve 8 through threads, so that the protective sleeve 2 and the electrode sleeve 12 are fixed firmly, at the moment, the lower end of the outer sleeve 8 is inserted between the fastening screw sleeve 14 and the inserting sleeve 13, the second sealing rubber ring 15 is deformed and filled in a gap between the second sealing rubber ring 15 and the outer sleeve 8 due to the extrusion of the fastening screw sleeve 14 and the outer sleeve 8, the inserting sleeve 13 is inserted and clamped in the inserting groove 9, so that the inserting sleeve 13 and the outer sleeve 8 are fixed firmly and tightly sealed, when the protective sleeve 2 is butted with the electrode sleeve 12, the protective sleeve 2 and the electrode sleeve 12 are subjected to the fastening force of the fastening screw sleeve 14 and the outer sleeve 8, the protective sleeve 2 and the electrode sleeve 12 extrude the first sealing rubber ring 11, so that the first sealing rubber ring 11 is deformed and filled in a clamping groove formed in the bottom end of the protective sleeve 2 and the top end of the, the connection between the protective sleeve 2 and the electrode sleeve 12 is sealed, and when the electrode sleeve is used, the limiting ring 16 is clamped at the bottom of the fastening threaded sleeve 14 to limit the fastening threaded sleeve 14 and prevent the fastening threaded sleeve 14 from moving and loosening;

when the device needs to be disassembled and repaired, the limiting ring 16 is taken off from the electrode sleeve 12 by prying, then the fastening screw sleeve 14 is rotated, the fastening screw sleeve 14 is separated from the outer sleeve 8 under the engagement of the threads, and the protective sleeve 2 is separated from the electrode sleeve 12 by pulling the protective sleeve 2 and the electrode sleeve 12 up and down.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A sealing device of a thermocouple, comprising a terminal block (1), characterized in that: the bottom of the wiring terminal box (1) is fixed with a protective sleeve (2), the outer side of the protective sleeve (2) is sleeved with a rotary threaded sleeve (3), the bottom of the rotary threaded sleeve (3) is sleeved with a pressing holding plate (4), the bottom of the pressing holding plate (4) is fixed with a rubber sealing gasket (5), the outer side of the protective sleeve (2) is fixedly provided with a mounting bolt (6), the outer side of the mounting bolt (6) is sleeved with a pipeline mounting opening (7), the outer bottom outer wall of the protective sleeve (2) is fixedly welded with an outer sleeve (8), the inner part of the outer sleeve (8) is provided with an insertion groove (9), the bottom of the protective sleeve (2) is inserted with an inner sleeve (10), the outer side of the inner sleeve (10) is sleeved with a first sealing rubber ring (11), the bottom of the inner sleeve (10) is fixedly welded with an electrode sleeve (12), the electrode sleeve is characterized in that an inserting sleeve (13) is welded and fixed on the outer wall of the upper end of the electrode sleeve (12), a fastening threaded sleeve (14) is sleeved on the outer side of the electrode sleeve (12), a second sealing rubber ring (15) is placed inside the fastening threaded sleeve (14), a limiting ring (16) is installed below the fastening threaded sleeve (14), and the limiting ring (16) is sleeved on the outer side of the electrode sleeve (12).

2. A sealing device of a thermocouple according to claim 1, wherein: the protective sleeve is characterized in that the outer wall of the protective sleeve (2) is uniformly provided with threads, the inner wall of the rotary threaded sleeve (3) is uniformly provided with threads, the rotary threaded sleeve (3) is in a threaded rotary structure through threaded engagement with the protective sleeve (2), the pressing and holding plate (4) and the rotary threaded sleeve (3) are in a rotary structure, and the front-view section of the pressing and holding plate (4) is in a circular arc-shaped design.

3. A sealing device of a thermocouple according to claim 1, wherein: the pipeline installing structure is characterized in that threads are uniformly arranged on the inner wall of the pipeline installing port (7), threads are uniformly arranged on the outer wall of the installing bolt (6), and the installing bolt (6) is in a threaded connection structure with the pipeline installing port (7) through threads.

4. A sealing device of a thermocouple according to claim 1, wherein: the utility model discloses a protective case, including protective case (2), electrode sleeve (12), first sealed rubber ring (11), protection sleeve (2) and electrode sleeve (12), the bottom of protective case (2) and the top outer wall of electrode sleeve (12) are gone up the symmetry and have been seted up the draw-in groove, and the draw-in groove is the ring form design, the cross-section of first sealed rubber ring (11) is the design of T font, first sealed rubber ring (11) are inlayed and are installed in the draw-in groove of seting up protective case (2) bottom and electrode sleeve (12) top.

5. A sealing device of a thermocouple according to claim 1, wherein: the electrode sleeve is characterized in that the top of the plug-in sleeve (13) is designed to be outwards protruded, the plug-in sleeve (13) is inserted into the plug-in groove (9), the outer wall of the outer sleeve (8) is uniformly provided with threads, the inner wall of the fastening threaded sleeve (14) is uniformly provided with threads, the fastening threaded sleeve (14) and the outer sleeve (8) are designed to be in a threaded connection structure through threads, the bottom of the outer sleeve (8) is inserted between the fastening threaded sleeve (14) and the plug-in sleeve (13), the fastening threaded sleeve (14) and the electrode sleeve (12) are designed to be in a rotating structure, and the fastening threaded sleeve (14) and the electrode sleeve (12) are designed to be in a sliding structure.

6. A sealing device of a thermocouple according to claim 1, wherein: the electrode sleeve is characterized in that a clamping groove is formed in the outer wall of the electrode sleeve (12), the clamping groove is formed right below the fastening threaded sleeve (14) in a circular ring shape, and the limiting ring (16) is clamped in the clamping groove formed in the electrode sleeve (12).