CN215909995U

CN215909995U - Protection device for thermocouple

Info

Publication number: CN215909995U
Application number: CN202121923829.0U
Authority: CN
Inventors: 陈强
Original assignee: Tianjin Yuchuang Temperature Instr Co ltd
Current assignee: Tianjin Yuchuang Temperature Instr Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-25
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a protection device for a thermocouple, which comprises a junction box, wherein the upper surface of the junction box is in threaded connection with a box cover, the upper surface of the box cover is provided with a connecting groove, the inner bottom wall of the connecting groove is rotatably connected with a rotating rod through a bearing, one end of the rotating rod is fixedly connected with a rotating block, the surface of the rotating rod is provided with a torsion spring, the lower surface of the rotating block is fixedly connected with a limiting plate, the inner wall of the connecting groove is fixedly connected with a baffle plate, the surface of the rotating block is fixedly connected with a connecting rod, and the rotating block is fixedly connected with a sliding plate through the connecting rod. According to the utility model, the sliding plate prevents sundries from entering the interior of the wiring sleeve, the service life of the wiring sleeve is prolonged, the sliding plate is rotated to expose the wiring sleeve below the sliding plate, the plug is placed in the wiring sleeve, and the plug is screwed up through the connecting thread, so that the connection is more stable, the plug is not easy to fall off, the wiring is simple, and the thermocouple is convenient to install and use.

Description

Protection device for thermocouple

Technical Field

The utility model relates to the technical field of thermocouples, in particular to a protection device for a 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 (a secondary instrument). The appearance of various thermocouples is very different according to needs, but the basic structures of the thermocouples are almost the same, and the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and are generally matched with a display instrument, a recording instrument and an electronic regulator for use.

When the thermocouple is used, the thermocouple is generally protected only by the insulating sleeve protection tube, but the pressure resistance protection performance of the existing thermocouple protection device is not very strong, so that the thermocouple is easily damaged, and the service life of the thermocouple is influenced, and the applicant finds that a Chinese patent discloses a sintering furnace thermocouple protection device through retrieval when applying the utility model, wherein the application number of the sintering furnace thermocouple protection device is 'CN 201920484034.0', and the problem that the pressure resistance protection performance of the thermocouple protection device is not very strong is solved, but the following problems exist:

1. when the thermocouple is used, wiring is needed, but most of the existing structures lead out a line from a wire outlet groove after wiring is finished by opening a wiring box, and the wiring box needs to be opened every time the thermocouple is installed and used, which is troublesome;

2. when the thermocouple is installed, the thermocouple sometimes needs to penetrate through the equipment shell, and a gap exists after the thermocouple is installed, so that the use effect of the equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a protection device for a thermocouple.

In order to achieve the purpose, the utility model adopts the following technical scheme: a protection device for a thermocouple comprises a junction box, wherein the upper surface of the junction box is connected with a box cover in a threaded manner, the upper surface of the box cover is provided with a connecting groove, the inner bottom wall of the connecting groove is rotatably connected with a rotating rod through a bearing, one end of the rotating rod is fixedly connected with a rotating block, the surface of the rotating rod is provided with a torsion spring, the lower surface of the rotating block is fixedly connected with a limiting plate, the inner wall of the connecting groove is fixedly connected with a baffle plate, the surface of the rotating block is fixedly connected with a connecting rod, the rotating block is fixedly connected with a sliding plate through a connecting rod, the upper surface of the box cover is fixedly connected with a wiring sleeve, the lower surface of the junction box is fixedly connected with a protection tube, the inner wall of the protection tube is fixedly connected with a clapboard, the inside packing of protection tube has insulating filler, the fixed surface of protection tube is connected with the installed part, the lower fixed surface of installed part is connected with the reinforcement sleeve.

As a further description of the above technical solution:

one end of the torsion spring is fixedly connected with the limiting plate, and the other end of the torsion spring is fixedly connected with the baffle.

As a further description of the above technical solution:

the upper surface of the box cover is connected with a sliding plate in a sliding mode, and the sliding plate is made of insulating materials.

As a further description of the above technical solution:

the inner wall of the wiring sleeve is provided with connecting threads, and the wiring sleeve is positioned below the sliding plate.

As a further description of the above technical solution:

the inside of protection tube is provided with the thermocouple silk, wire sleeve and thermocouple silk electric connection.

As a further description of the above technical solution:

the upper surface of the mounting piece is provided with mounting holes which are symmetrically distributed.

As a further description of the above technical solution:

the upper surface of installed part has seted up the fixed slot, the inner wall fixedly connected with heat-resisting pad of fixed slot.

As a further description of the above technical solution:

the heat-resistant pad is made of elastic materials, and the inner wall of the reinforcing sleeve is fixedly connected with the protection tube.

The utility model has the following beneficial effects:

1. compared with the prior art, this protection device that thermocouple was used, the inside debris that get into of lug are prevented to the sliding plate, prolong the life-span of lug, rotate the lug that the sliding plate exposes the sliding plate below, put into the lug with the plug, twist the plug through connecting thread, connect more stably, and the plug is difficult for droing, and the wiring is simple, the installation of the thermocouple of being convenient for is used.

2. Compared with the prior art, this protection device that thermocouple was used fixes the installed part in the position of use through the cooperation of screw and mounting hole, and fixed effectual, heat-resisting pad promotes the leakproofness when the thermocouple passes equipment use, guarantees the result of use of equipment.

3. Compared with the prior art, the protection device for the thermocouple has the advantages that the thermocouple wires are separated through the partition plate, and the insulation filler enables the thermocouple wires not to move easily, so that short circuit is not prone to occurring.

4. Compared with the prior art, according to the protection device for the thermocouple, the box cover 2 can be opened, and the interior of the junction box can be overhauled by opening the box cover 2.

Drawings

Fig. 1 is a perspective view showing an overall structure of a protection device for a thermocouple according to the present invention;

FIG. 2 is a schematic view of the internal structure of a protection device for a thermocouple according to the present invention;

FIG. 3 is an enlarged view of the protection device for a thermocouple according to the present invention at A in FIG. 2;

fig. 4 is a schematic view of an internal structure of a mounting member of a protection device for a thermocouple according to the present invention.

Illustration of the drawings:

1. a junction box; 2. a box cover; 3. connecting grooves; 4. a rotating rod; 5. rotating the block; 6. a torsion spring; 7. a limiting plate; 8. a baffle plate; 9. a sliding plate; 10. a wiring sleeve; 11. connecting threads; 12. protecting the tube; 13. a partition plate; 14. an insulating filler; 15. a mounting member; 16. mounting holes; 17. fixing grooves; 18. a heat resistant pad; 19. and a reinforcing sleeve.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the present invention provides a protection device for a thermocouple: the junction box comprises a junction box 1, wherein the upper surface of the junction box 1 is in threaded connection with a box cover 2, the box cover 2 can be opened, the interior of the junction box 1 can be overhauled by opening the box cover 2, and the upper surface of the box cover 2 is provided with a connecting groove 3;

the inner bottom wall of the connecting groove 3 is rotatably connected with a rotating rod 4 through a bearing, one end of the rotating rod 4 is fixedly connected with a rotating block 5, the surface of the rotating rod 4 is provided with a torsion spring 6, one end of the torsion spring 6 is fixedly connected with a limiting plate 7, the other end of the torsion spring 6 is fixedly connected with a baffle plate 8, the torsion spring 6 deforms to generate elasticity when the rotating block 5 rotates, the lower surface of the rotating block 5 is fixedly connected with the limiting plate 7, the inner wall of the connecting groove 3 is fixedly connected with the baffle plate 8, the surface of the rotating block 5 is fixedly connected with a connecting rod, the rotating block 5 is fixedly connected with a sliding plate 9 through the connecting rod, the upper surface of the box cover 2 is slidably connected with the sliding plate 9, the sliding plate 9 is made of an insulating material, the sliding plate 9 is kept at a fixed angle under the action of the elasticity of the torsion spring 6, the sliding plate 9 prevents sundries from entering the interior of the wiring sleeve 10, and the service life of the wiring sleeve 10 is prolonged;

the upper surface of the box cover 2 is fixedly connected with a wiring sleeve 10, the wiring sleeve 10 is positioned below the sliding plate 9, the inner wall of the wiring sleeve 10 is provided with a connecting thread 11, the wiring is connected with the wiring sleeve 10 through a plug, the plug is screwed up through the connecting thread 11, the connection is more stable, the plug is not easy to fall off, the lower surface of the wiring box 1 is fixedly connected with a protection pipe 12, a thermocouple wire is arranged inside the protection pipe 12, the wiring sleeve 10 is electrically connected with the thermocouple wire, the protection pipe 12 protects the thermocouple wire, the inner wall of the protection pipe 12 is fixedly connected with a partition plate 13, the partition plate 13 partitions the thermocouple wire to enable the thermocouple wire not to be easily short-circuited, and the inside of the protection pipe 12 is filled with an insulating filler 14;

fixed surface of protection tube 12 is connected with installed part 15, and the lower fixed surface of installed part 15 is connected with the uide bushing 19, and mounting hole 16 has been seted up to the upper surface of installed

part

15, and 16 symmetric distribution of mounting hole, fixed slot 17 have been seted up to the upper surface of installed part 15, and the inner wall fixedly connected with heat-resistant pad 18 of fixed slot 17, the material of heat-resistant pad 18 are elastic material, the inner wall and the protection tube 12 fixed connection of uide bushing 19.

The working principle is as follows: when the thermocouple junction box is used, the mounting piece 15 is fixed at a using position through the matching of the screw and the mounting hole 16, the fixing effect is good, when a thermocouple passes through equipment for use, the sealing performance is improved through the heat-resistant pad 18, the using effect of the equipment is ensured, the box cover 2 can be opened, the interior of the junction box 1 can be overhauled by opening the box cover 2, the sliding plate 9 is rotated to expose the wiring sleeve 10 below the sliding plate 9, a plug is placed into the wiring sleeve 10, the plug is screwed up through the connecting thread 11, the connection is more stable, and the plug is not easy to fall off.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A protection device for thermocouples, comprising a junction box (1), characterized in that: the upper surface of the junction box (1) is in threaded connection with a box cover (2), the upper surface of the box cover (2) is provided with a connecting groove (3), the inner bottom wall of the connecting groove (3) is rotatably connected with a rotating rod (4) through a bearing, one end of the rotating rod (4) is fixedly connected with a rotating block (5), the surface of the rotating rod (4) is provided with a torsion spring (6), the lower surface of the rotating block (5) is fixedly connected with a limiting plate (7), the inner wall of the connecting groove (3) is fixedly connected with a baffle (8), the surface of the rotating block (5) is fixedly connected with a connecting rod, and the rotating block (5) is fixedly connected with a sliding plate (9) through the connecting rod;

the upper surface of the box cover (2) is fixedly connected with a wiring sleeve (10), the lower surface of the junction box (1) is fixedly connected with a protection tube (12), the inner wall of the protection tube (12) is fixedly connected with a partition plate (13), and the interior of the protection tube (12) is filled with an insulating filler (14);

the surface fixed connection of protection tube (12) has installed part (15), the lower surface fixed connection of installed part (15) has reinforcement cover (19).

2. A protection device for a thermocouple according to claim 1, wherein: one end of the torsion spring (6) is fixedly connected with the limiting plate (7), and the other end of the torsion spring (6) is fixedly connected with the baffle (8).

3. A protection device for a thermocouple according to claim 1, wherein: the upper surface of the box cover (2) is in sliding connection with a sliding plate (9), and the sliding plate (9) is made of an insulating material.

4. A protection device for a thermocouple according to claim 1, wherein: the inner wall of the wiring sleeve (10) is provided with a connecting thread (11), and the wiring sleeve (10) is positioned below the sliding plate (9).

5. A protection device for a thermocouple according to claim 1, wherein: the thermocouple wire is arranged in the protection tube (12), and the wiring sleeve (10) is electrically connected with the thermocouple wire.

6. A protection device for a thermocouple according to claim 1, wherein: mounting holes (16) are formed in the upper surface of the mounting piece (15), and the mounting holes (16) are symmetrically distributed.

7. A protection device for a thermocouple according to claim 1, wherein: the upper surface of installed part (15) has seted up fixed slot (17), the inner wall fixedly connected with of fixed slot (17) is heat-resisting fills up (18).

8. A protection device for a thermocouple according to claim 7, wherein: the heat-resistant pad (18) is made of elastic materials, and the inner wall of the reinforcing sleeve (19) is fixedly connected with the protection tube (12).