CN216283992U

CN216283992U - Thermocouple

Info

Publication number: CN216283992U
Application number: CN202122918720.4U
Authority: CN
Inventors: 吕崇瑜
Original assignee: Henan Luoene Nano Materials Co ltd
Current assignee: Henan Luoene Nano Materials Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-12
Anticipated expiration: 2031-11-25

Abstract

The utility model discloses a thermocouple, which comprises a junction box, wherein a junction box is arranged in the junction box, a thermocouple is connected to the bottom surface of the junction box, an insulating sleeve is arranged on the outer side of the thermocouple, a quick connector is connected to the outer side of the junction box, a stainless steel pipe is connected to the bottom of the junction box, the stainless steel pipe is positioned on the outer side of the insulating sleeve, an anticorrosive layer is formed on the outer side of the stainless steel pipe, and an anti-coking layer is formed on the outer side of the anticorrosive layer. Has the advantages that: the anticorrosion layer is arranged, so that the anticorrosion performance can be improved, and the service life of the device can be prolonged; through setting up the coking prevention layer, can prevent the stainless steel outer wall adhesion coking, guarantee heat-conduction effect, ensure to detect the accuracy.

Description

Thermocouple

Technical Field

The utility model relates to the technical field of thermocouples, in particular to 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). However, the existing thermocouple is protected by an external stainless steel tube, and the stainless steel tube is easily corroded after long-time use, so that the service life is influenced; meanwhile, the outer wall of the stainless steel pipe is easy to adhere and coke, and the heat conduction is influenced, so that the detection accuracy is influenced.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a thermocouple, which is described in detail below, in order to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme:

the thermocouple provided by the utility model comprises a junction box, wherein a wire holder is arranged in the junction box, a thermocouple is connected to the bottom surface of the wire holder, an insulating sleeve is arranged on the outer side of the thermocouple, a quick connector is connected to the outer side of the junction box, a stainless steel pipe is connected to the bottom of the junction box, the stainless steel pipe is positioned on the outer side of the insulating sleeve, an anticorrosive layer is formed on the outer side of the stainless steel pipe, and an anti-coking layer is formed on the outer side of the anticorrosive layer.

By adopting the thermocouple, the anticorrosive layer is arranged on the outer side of the stainless steel pipe, and the anticorrosive layer plays an anticorrosive role, so that the service life of the device is prolonged; through set up the anticorrosive coating outside prevent the coking layer, through prevent the coking layer prevent nonrust steel pipe outside adhesion coking ensures the heat conduction effect, helps guaranteeing the detection accuracy of device.

Preferably, the thickness of the anticorrosive layer and the coking prevention layer is the same, and the total thickness of the anticorrosive layer and the coking prevention layer is 80-100 μm.

Preferably, still include the flange, the flange center is run through and is provided with through-hole and through-hole internal rotation and installs the swivelling joint pipe, nonrust steel pipe runs through the swivelling joint pipe and with the swivelling joint pipe can dismantle the connection.

Preferably, a fixed sleeve is formed inside the through hole in the center of the flange, and the rotating pipe is rotatably connected with the fixed sleeve through a bearing.

Preferably, a limiting ring is formed on the outer side of the rotating pipe, and the limiting ring is in contact with the upper end of the fixing sleeve.

Preferably, a locking bolt is inserted through the outer side of the rotating pipe by a screw thread, and is used for fixing the stainless steel pipe in the rotating pipe.

Preferably, the number of the locking bolts is two and the locking bolts are symmetrically distributed with respect to the axis of the rotary pipe.

Preferably, the outer wall of the stainless steel pipe is provided with a limiting groove, the limiting groove extends along the axial direction of the stainless steel pipe, and the limiting groove is in clearance fit with the locking bolt.

Preferably, the bottom surface of the flange is provided with a sealing gasket.

Has the advantages that: the anticorrosion layer is arranged, so that the anticorrosion performance can be improved, and the service life of the device can be prolonged; through setting up the coking prevention layer, can prevent the stainless steel outer wall adhesion coking, guarantee heat-conduction effect, ensure to detect the accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a schematic view of a connection structure of a flange and a stainless steel pipe.

The reference numerals are explained below:

1. a junction box; 2. a quick connector; 3. a stainless steel tube; 301. a limiting groove; 4. a flange; 5. an anticorrosive layer; 6. an anti-coking layer; 7. fixing a sleeve; 8. a limiting ring; 9. locking the bolt; 10. rotating the tube; 11. and a gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1-3, the utility model provides a thermocouple, comprising a junction box 1, a wire holder is arranged in the junction box 1, a thermocouple is connected with the bottom surface of the wire holder, an insulating sleeve is arranged outside the thermocouple, a quick connector 2 is connected with the outside of the junction box 1, a stainless steel tube 3 is connected with the bottom of the junction box 1, the stainless steel tube 3 is positioned outside the insulating sleeve, an anti-corrosion layer 5 is formed on the outside of the stainless steel tube 3, the anti-corrosion layer 5 is made of a nano functional thin film material with higher density and capable of preventing acid and alkali gas corrosion, and is mainly composed of a composite ceramic material composed of non-metallic carbide, boride and nitride materials such as silicon hexaboride, silicon nitride, silicon carbide and the like, and is not easy to generate adhesion reaction with oxide materials, the compactness is higher, the intensity is high, on one hand, the effect of preventing the oxide from generating reaction adhesion is achieved, and on the other hand, the strong acid-base atmosphere corrosion prevention effect is achieved; the outer side of the anti-corrosion layer 5 is formed with an anti-coking layer 6, the anti-coking layer 6 is a nano functional film material, and the main function is to prevent various molten ash, silicate substances, nonferrous metals and oxides from adhering to the surface of the coating, thereby playing the anti-coking effect.

As an optional implementation mode, the device further comprises a flange 4, a through hole penetrates through the center of the flange 4, a rotating pipe 10 is rotatably mounted in the through hole, and a stainless steel pipe 3 penetrates through the rotating pipe 10 and is detachably connected with the rotating pipe 10, so that the device is convenient to disassemble, assemble and replace; meanwhile, the rotation of the stainless steel tube 3 can be realized through the rotating tube 10, and the connection looseness of the quick connector 2 caused by the fact that a connecting line is pulled is avoided.

The through-hole internal forming at flange 4 center has fixed cover 7, and rotatory pipe 10 passes through the bearing and is connected with fixed cover 7 rotation, sets up like this, can make rotatory pipe 10 steadily rotatory.

The shaping of rotatory pipe 10 outside has spacing ring 8, and spacing ring 8 contacts with fixed cover 7 upper end, sets up like this, can guarantee rotatory pipe 10 in axial direction's steadiness.

The outside of the rotating pipe 10 is provided with a locking bolt 9 through a thread in a penetrating manner, and the stainless steel pipe 3 is fixed inside the rotating pipe 10, so that the stainless steel pipe 3 can be conveniently disassembled and assembled inside the rotating pipe 10.

The locking bolts 9 are two in total and are symmetrically distributed with the axis of the rotating pipe 10 as a reference, so that the stability of the stainless steel pipe 3 in the rotating pipe 10 can be ensured.

The outer wall of the stainless steel pipe 3 is provided with a limiting groove 301, the limiting groove 301 extends along the axial direction of the stainless steel pipe 3, and the limiting groove 301 is in clearance fit with the locking bolt 9, so that the locking and fixing stability of the locking bolt 9 on the stainless steel pipe 3 can be improved.

The bottom surface of the flange 4 is provided with a sealing gasket 11, so that the friction force between the flange 4 and equipment can be improved, and the installation stability of the flange 4 is ensured.

By adopting the structure, the anticorrosion layer 5 is arranged on the outer side of the stainless steel pipe 3, and the anticorrosion effect is achieved through the anticorrosion layer 5, so that the service life of the device is prolonged; through set up coking prevention layer 6 in the 5 outsides of anticorrosive coating, prevent 3 outside adhesion cokes of nonrust steel pipe through coking prevention layer 6, ensure the heat conduction effect, help guaranteeing the detection accuracy of device.

The thickness of the anticorrosive layer 5 is the same as that of the anti-coking layer 6, and the total thickness of the anticorrosive layer 5 and the anti-coking layer 6 is 80-100 μm, so that the anticorrosive effect of the anticorrosive layer 5 and the anti-coking effect of the anti-coking layer 6 can be ensured.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a thermocouple, includes terminal box (1), terminal box (1) inside is provided with the connection terminal, the connection terminal bottom surface is connected with the galvanic couple, the galvanic couple outside is provided with insulating cover, terminal box (1) outside is connected with quick-operation joint (2), terminal box (1) bottom is connected with nonrust steel pipe (3), nonrust steel pipe (3) are located insulating cover outside, its characterized in that: an anti-corrosion layer (5) is formed on the outer side of the stainless steel pipe (3), and an anti-coking layer (6) is formed on the outer side of the anti-corrosion layer (5).

2. A thermocouple according to claim 1, in which: the thickness of the anti-corrosion layer (5) is the same as that of the anti-coking layer (6), and the total thickness of the anti-corrosion layer (5) and the anti-coking layer (6) is 80-100 mu m.

3. A thermocouple according to claim 1, in which: still include flange (4), flange (4) center is run through and is provided with through-hole and through-hole inside rotation and installs swivelling joint pipe (10), nonrust steel pipe (3) run through swivelling joint pipe (10) and with swivelling joint pipe (10) can dismantle the connection.

4. A thermocouple according to claim 3, in which: the inner part of the through hole at the center of the flange (4) is formed with a fixed sleeve (7), and the rotating pipe (10) is rotationally connected with the fixed sleeve (7) through a bearing.

5. A thermocouple according to claim 4, in which: the outer side of the rotating pipe (10) is formed with a limiting ring (8), and the limiting ring (8) is in contact with the upper end of the fixed sleeve (7).

6. A thermocouple according to claim 3, in which: and a locking bolt (9) penetrates through the outer side of the rotating pipe (10) through threads and is used for fixing the stainless steel pipe (3) in the rotating pipe (10).

7. A thermocouple according to claim 6, in which: the two locking bolts (9) are symmetrically distributed with the axis of the rotating pipe (10) as a reference.

8. A thermocouple according to claim 6, in which: the outer wall of the stainless steel pipe (3) is provided with a limiting groove (301), the limiting groove (301) extends in the axial direction of the stainless steel pipe (3), and the limiting groove (301) is in clearance fit with the locking bolt (9).

9. A thermocouple according to claim 3, in which: and a sealing gasket (11) is arranged on the bottom surface of the flange (4).