Anti-corrosion thermocouple

Abstract

The utility model discloses an anti-corrosion thermocouple, which relates to the technical field of thermocouples, and comprises a trunking box, an insulating tube, a thermocouple wire, an outer cover and a wiring terminal, and the insulating tube is connected and communicated with the bottom of the trunking box; the thermocouple wire is arranged in the wire slot box and extends downwards to the bottom of the insulating tube; the outer cover is fixedly arranged on the outer side of the insulating tube in a sleeving manner, and an anti-corrosion coating is arranged on the outer side of the outer cover and is used for being in contact with a medium to be detected; the wiring terminal is arranged on the side wall of the wire slot box and used for being connected with an external circuit so as to transmit temperature signals measured by the thermocouple wire, the structure is simple, durability is effectively improved, the service time is effectively prolonged, and cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to an anti-corrosion thermocouple. Background Art

[0002] Thermocouples, the most widely used contact temperature sensors, are widely used in numerous key fields, including metallurgy, aerospace, petrochemicals, and hydropower generation. The accuracy of their readings is directly related to the reliability of the value transmission and determines the quality of the products produced by related manufacturers. The service life of existing thermocouples is limited by the operating environment. Some working environments are corrosive, causing them to corrode or wear out, requiring frequent replacement and increasing operating costs. Utility Model Content

[0003] The purpose of the utility model is to provide an anti-corrosion thermocouple to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively increasing durability, effectively extending service life, and effectively saving costs.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides an anti-corrosion thermocouple, comprising: a wire trough box, an insulating tube, a galvanic wire, an outer cover and a wiring terminal, wherein the insulating tube is connected to and communicates with the bottom of the wire trough box; the galvanic wire is arranged in the wire trough box and extends downward to the bottom of the insulating tube; the outer cover is sleeved and fixed on the outer side of the insulating tube, and the outer side of the outer cover is provided with an anti-corrosion coating, and the anti-corrosion coating is used to contact the medium to be measured; the wiring terminal is arranged on the side wall of the wire trough box, and the wiring terminal is used to connect to an external circuit to transmit the temperature signal measured by the galvanic wire.

[0006] Preferably, a scraper is further included, which is sleeved on the outside of the outer cover and can slide in the length direction of the outer cover and maintain the position after sliding. The scraper can scrape off the attachments on the outer cover during the sliding process on the outer cover.

[0007] Preferably, the anti-corrosion coating is a polyolefin coating, and the thickness of the anti-corrosion coating is 6 to 8 μm.

[0008] Preferably, a sealing cover is further included, and the sealing cover is detachably fixedly connected to the top of the wire trough box to seal the wire trough box.

[0009] Preferably, it further comprises a thermochromic sheet, and the thermochromic sheet is arranged in the middle of the sealing cover.

[0010] Preferably, it further comprises a handle and two rotating connectors, the two ends of the two rotating connectors are respectively arranged at the two ends of the wire trough box, and the handle is rotatably connected to the wire trough box through the rotating connectors.

[0011] Preferably, it further comprises a spare through hole and a buckle cover, wherein the spare through hole is provided on the wire trough box, the spare through hole is used to insert a spare galvanic wire, and the buckle cover is used to be detachably fixedly connected to the wire trough box to seal the spare through hole.

[0012] Compared with the prior art, the utility model has achieved the following technical effects:

[0013] The utility model provides an anti-corrosion thermocouple. By providing an outer cover and an anti-corrosion coating on the outer side of the outer cover, the outer cover is used to contact the medium to be measured, which can effectively prevent the outer cover from being corroded in a corrosive environment, increase or decrease the durability of the thermocouple, effectively extend the service life, and effectively save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the corrosion-resistant thermocouple provided by the utility model;

[0016] Figure 2 A front view of the corrosion-resistant thermocouple provided by the utility model;

[0017] Figure 3 A cross-sectional view of the corrosion-resistant thermocouple provided by the present invention;

[0018] In the figure: 1. Outer cover; 2. Wire trough box; 3. Sealing cover; 4. Scraper; 5. Rotating connector; 6. Handle; 7. Galvanic wire; 8. Spare through hole; 9. Thermochromic film; 10. Terminal block; 11. Insulation tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The purpose of the utility model is to provide an anti-corrosion thermocouple to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively increasing durability, effectively extending service life, and effectively saving costs.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] The utility model provides a kind of corrosion-resistant thermocouple. Figures 1 to 3 As shown, it includes: a wire trough box 2, an insulating tube 11, a galvanic wire 7, an outer cover 1 and a terminal block 10, wherein the insulating tube 11 is connected to and communicated with the bottom of the wire trough box 2; the galvanic wire 7 is arranged in the wire trough box 2 and extends downward to the bottom of the insulating tube 11; the outer cover 1 is sleeved and fixed on the outside of the insulating tube 11, and the outer side of the outer cover 1 is provided with an anti-corrosion coating, which is used to contact the medium to be measured; the terminal block 10 is provided on the side wall of the wire trough box 2, and the terminal block 10 is used to connect to an external circuit to transmit the temperature signal measured by the galvanic wire 7. By providing the outer cover 1 and providing the anti-corrosion coating on the outer side of the outer cover 1, the outer cover 1 is used to contact the medium to be measured, which can effectively prevent the outer cover 1 from being corroded in a corrosive environment, can increase or decrease the durability of the thermocouple, effectively extend the service life, and effectively save costs.

[0023] In a preferred embodiment, the corrosion-resistant thermocouple further includes a scraper 4, which is sleeved on the outside of the outer cover 1, and the scraper 4 can slide in the length direction of the outer cover 1 and maintain its position after sliding. The scraper 4 can scrape off the attachments on the outer cover 1 during the sliding process on the outer cover 1. The structure is simple, easy to use, and can effectively scrape off the attachments on the outer cover 1, effectively preventing the attachments from corroding the outer cover 1.

[0024] In a preferred embodiment, the anti-corrosion coating is a polyolefin coating with a thickness of 6 to 8 μm, which can effectively prevent the outer cover 1 from being corroded in a corrosive environment, prevent dust and moisture from entering, and protect the galvanic wire 7 .

[0025] In a preferred embodiment, the corrosion-resistant thermocouple further includes a sealing cover 3 , which is detachably fixed to the top of the wire trough box 2 to seal the wire trough box 2 , thereby preventing dust and moisture from entering and protecting the galvanic wire 7 .

[0026] In a preferred embodiment, the anti-corrosion thermocouple further includes a thermochromic sheet 9, which is disposed in the middle of the sealing cover 3. Two thermochromic sheets 9 are provided, and the thermochromic sheets 9 can display temperature changes for user convenience.

[0027] In a preferred embodiment, the corrosion-resistant thermocouple also includes a handle 6 and two rotating connectors 5, the two ends of the two rotating connectors 5 are respectively arranged at the two ends of the wire trough box 2, and the handle 6 is rotatably connected to the wire trough box 2 through each rotating connector 5, and is rotatably connected to the wire trough box 2 through the rotating connector 5, which is convenient to carry.

[0028] In a preferred embodiment, the corrosion-resistant thermocouple also includes a spare through hole 8 and a buckle cover. The spare through hole 8 is arranged on the wire trough box 2. The spare through hole 8 is used to insert a spare galvanic wire 7. The buckle cover is used to be detachably fixedly connected to the wire trough box 2 to seal the spare through hole 8. When the galvanic wire 7 has inaccurate measurement data or is damaged, another galvanic wire 7 can be inserted through the spare through hole 8 inside the wire trough box 2 for measurement operation without replacing the entire thermocouple.

[0029] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A corrosion-resistant thermocouple, characterized in that: include: Wire trough box, an insulating tube connected to and in communication with the bottom of the wire trough box; a galvanic wire disposed in the wire trough box and extending downward to the bottom of the insulating tube; An outer cover, wherein the outer cover is fixedly sleeved on the outer side of the insulating tube, and an anti-corrosion coating is provided on the outer side of the outer cover, and the anti-corrosion coating is used to contact the medium to be measured; and The wiring terminal is arranged on the side wall of the wire trough box, and is used to connect to an external circuit to transmit the temperature signal measured by the galvanic wire.

2. The corrosion-resistant thermocouple according to claim 1, characterized in that: It also includes a scraper, which is sleeved on the outside of the outer cover and can slide in the length direction of the outer cover and maintain the position after sliding. The scraper can scrape off the attachments on the outer cover during the sliding process on the outer cover.

3. The corrosion-resistant thermocouple according to claim 2, characterized in that: The anti-corrosion coating is a polyolefin coating, and the thickness of the anti-corrosion coating is 6 to 8 μm.

4. The corrosion-resistant thermocouple according to claim 1, wherein: The utility model further comprises a sealing cover which is detachably fixedly connected to the top of the wire trough box to seal the wire trough box.

5. The corrosion-resistant thermocouple according to claim 4, characterized in that: It also includes a thermochromic sheet, which is arranged in the middle of the sealing cover.

6. The corrosion-resistant thermocouple according to claim 1, characterized in that: It also includes a handle and two rotating connectors, the two ends of the two rotating connectors are respectively arranged at the two ends of the wire trough box, and the handle is rotatably connected to the wire trough box through the rotating connectors.

7. The corrosion-resistant thermocouple according to claim 1, characterized in that: It also includes a spare through hole and a buckle cover, wherein the spare through hole is provided on the wire trough box and is used for inserting a spare galvanic wire, and the buckle cover is used for being detachably fixedly connected to the wire trough box to seal the spare through hole.

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