T-shaped thermocouple

Abstract

The utility model discloses a T-type thermocouple which comprises a protection box and a thermocouple body, a body shell is fixedly arranged on the periphery of the thermocouple body and arranged in the protection box, penetrating holes are formed in the bottoms of the protection box and the body shell, and a detection core is fixedly arranged at the bottom of the thermocouple body and penetrates through the penetrating holes. A fixing plate is fixedly arranged in the protection box, a control box is installed on the fixing plate, the control box is electrically connected with the thermocouple body, and a driving assembly for adjusting the height is arranged between the fixing plate and the body shell. By arranging a driving assembly and a wall scraping assembly, a hydraulic cylinder drives a main body shell to move through a sliding block, and the main body shell drives a thermocouple main body, a detection core and an anti-corrosion sleeve which are arranged inside and below the main body shell to move, so that a hollow scraping plate on an annular supporting frame can clean impurities on the surface of the anti-corrosion sleeve; corrosive impurities are prevented from damaging the detection core and the anti-corrosion sleeve, the use safety of the T-type thermocouple is improved, and the service life of the T-type thermocouple is prolonged.

Description

Technical Field

[0001] The utility model relates to a T-type thermocouple and belongs to the technical field of T-type thermocouples. Background Art

[0002] T-type thermocouple is also called copper-constantan thermocouple (copper / nickel-copper thermocouple, graduation number T, measuring range -200~+350℃), and is also the best thermocouple for measuring low-temperature cheap metals. Its positive electrode (TP) is pure copper, and its negative electrode (TN) is copper-nickel alloy, called constantan. It is compatible with constantan EN of nickel-chromium-constantan, but not with constantan JN of iron-constantan. Although they are all called constantan, the measuring temperature range of copper-copper-nickel thermocouple is -200~350℃.

[0003] However, in the prior art, the position of the T-type thermocouple cannot be adjusted according to needs during use. When in use, the bottom will come into contact with corrosive gas or liquid, causing impurities to easily stick to the detection tube and corrode the tube. It cannot be directly operated, causing inconvenience. It is urgent to design a T-type thermocouple to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to design a T-type thermocouple in view of the above problems existing in the prior art, to overcome the deficiencies mentioned in the prior art.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A T-type thermocouple comprises a protective box and a thermocouple body, wherein a main body shell is fixedly provided on the periphery of the thermocouple body, the main body shell is arranged inside the protective box, and through holes are provided at the bottoms of the protective box and the main body shell, a detection core is fixedly provided at the bottom of the thermocouple body, the detection core is inserted into the through hole, a fixing plate is fixedly provided inside the protective box, a control box is installed on the fixing plate, the control box is electrically connected to the thermocouple body, a driving assembly for adjusting the height is provided between the fixing plate and the main body shell, a wall scraping assembly for assisting scraping is provided below the protective box, and the wall scraping assembly is arranged on the periphery of the detection core.

[0007] Preferably, an anti-corrosion coating is fixedly sprayed on the outer wall of the protection box, an anti-corrosion sleeve is fixedly provided on the outer periphery of the detection core, and the top of the anti-corrosion sleeve is fixed to the bottom of the main shell.

[0008] Preferably, the driving assembly includes two hydraulic cylinders, a slider and two slide grooves, the two hydraulic cylinders are installed on the top of the fixed plate, the output ends of the two hydraulic cylinders pass through the bottom of the fixed plate through piston rods, and are respectively fixedly connected to the two sliders, the two sliders are respectively fixed on both sides of the outer wall of the main shell, the two slide grooves are opened on both sides of the inner wall of the protective box, and the sliders slide in the slide grooves.

[0009] Preferably, the scraping wall assembly includes an annular support frame, which is fixedly arranged on the outer wall of the bottom of the protective box and located on the outer periphery of the through hole opened in the protective box. An inner wall of the annular support frame is fixedly sleeved with a sealing ring, and the annular support frame is provided with internal threads.

[0010] Preferably, the annular support frame is threadedly connected with a hollow scraping plate, and the hollow scraping plate abuts against and slides on the outer periphery of the anti-corrosion sleeve.

[0011] Preferably, a sealing member is arranged between the lower part of the main body housing and the upper part of the scraping wall assembly, and the sealing member is located on the inner periphery of the through hole opened in the protective box.

[0012] Preferably, the protective box, the main body housing and the fixing plate are all provided with wire holes, a wire is electrically connected to the thermocouple main body, and the wire penetrates through the inner ring of the wire hole and extends to the outer wall of the protective box.

[0013] The beneficial effects achieved by the utility model are as follows:

[0014] By arranging the driving assembly and the scraping wall assembly, the hydraulic cylinder drives the main body housing to move through the slider, the main body housing drives the thermocouple main body, the detection core and the anti-corrosion sleeve inside and below to move, so that the hollow scraping plate on the annular support frame can timely clean the impurities on the surface of the anti-corrosion sleeve on the outer periphery of the detection core, prevent the corrosive impurities from damaging the detection core and the anti-corrosion sleeve, improve the safety of the T-type thermocouple in use, and extend the service life of the T-type thermocouple. Description of the Drawings

[0015] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the utility model;

[0016] Figure 2 is Figure 1 a schematic sectional structure diagram of the whole shown;

[0017] Figure 3 is Figure 2 an enlarged structure diagram of part A in.

[0018] Reference numerals: 1, protective box; 01, anti-corrosion coating; 2, thermocouple main body; 3, main body housing; 4, detection core; 5, fixing plate; 6, control box; 7, driving assembly; 71, hydraulic cylinder; 72, slider; 73, chute; 8, scraping wall assembly; 81, annular support frame; 82, sealing ring; 83, hollow scraping plate; 9, anti-corrosion sleeve; 10, sealing member; 11, wire. Detailed Embodiments

[0019] The present utility model will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and cannot be used to limit the protection scope of the present utility model. Embodiment 1

[0020] As Figures 1-3 shown, a T-shaped thermocouple proposed by the present utility model includes a protective box 1 and a thermocouple main body 2. A main body housing 3 is fixedly arranged on the outer periphery of the thermocouple main body 2. The main body housing 3 is arranged inside the protective box 1. Through holes are formed at the bottoms of both the protective box 1 and the main body housing 3. A detection core 4 is fixedly arranged at the bottom of the thermocouple main body 2. The detection core 4 is inserted through the through holes. A fixing plate 5 is fixedly arranged inside the protective box 1. A control box 6 is installed on the fixing plate 5. The control box 6 is electrically connected to the thermocouple main body 2. A driving component 7 for adjusting the height is arranged between the fixing plate 5 and the main body housing 3. A scraping wall component 8 for assisting in scraping materials is arranged below the protective box 1. The scraping wall component 8 is arranged on the outer periphery of the detection core 4.

[0021] In this embodiment, a main body housing 3 is fixedly arranged on the outer periphery of the thermocouple main body 2 to protect the thermocouple main body 2 and assist in linkage with the driving component 7. A detection core 4 is fixedly arranged at the bottom of the thermocouple main body 2. A fixing plate 5 is fixedly arranged inside the protective box 1 to fix the position of the driving component 7 through the fixing plate 5. A driving component 7 for adjusting the height is arranged between the fixing plate 5 and the main body housing 3. A scraping wall component 8 for assisting in scraping materials is arranged below the protective box 1. The scraping wall component 8 is arranged on the outer periphery of the detection core 4. When the driving component 7 drives the main body housing 3 to move, the distance that the detection core 4 at the bottom of the thermocouple main body 2 extends out of the protective box 1 can be controlled, which is convenient for adjusting the use distance of the main body. The cleaning of impurities adsorbed on the outer periphery of the detection core 4 can be improved through the scraping wall component 8, and the safety and practicality of the main body in use are improved. Embodiment 2

[0022] As Figures 1-3As shown in the figure, a T-shaped thermocouple proposed by the present utility model. Compared with Embodiment 1, this embodiment further includes that an anti-corrosion coating 01 is fixedly sprayed on the outer wall of the protection box 1, an anti-corrosion sleeve 9 is fixedly arranged on the outer periphery of the detection core 4, the top of the anti-corrosion sleeve 9 is fixed to the bottom of the main body housing 3, the driving assembly 7 includes two hydraulic cylinders 71, sliders 72 and two chutes 73. The two hydraulic cylinders 71 are installed on the top of the fixing plate 5. The output ends of the two hydraulic cylinders 71 pass through the bottom of the fixing plate 5 through the piston rods and are respectively fixedly connected to the two sliders 72. The two sliders 72 are respectively fixed on both sides of the outer wall of the main body housing 3. The two chutes 73 are opened on both sides of the inner wall of the protection box 1. The sliders 72 slide in the chutes 73. The scraping wall assembly 8 includes an annular support frame 81. The annular support frame 81 is fixedly arranged on the bottom outer wall of the protection box 1 and is located outside the perforation opened in the protection box 1. A sealing ring 82 is fixedly sleeved on the inner wall of the annular support frame 81. The annular support frame 81 is provided with internal threads. A hollow scraping plate 83 is connected to the internal threads of the annular support frame 81. The hollow scraping plate 83 abuts against and slides on the outer periphery of the anti-corrosion sleeve 9. A sealing member 10 is arranged between the lower part of the main body housing 3 and the upper part of the scraping wall assembly 8. The sealing member 10 is located inside the perforation opened in the protection box 1. The protection box 1, the main body housing 3 and the fixing plate 5 are all provided with wire holes. A wire 11 is electrically connected to the thermocouple main body 2. The wire 11 penetrates through the inner circle of the wire hole and extends to the outer wall of the protection box 1.

[0023] In this embodiment, an anti-corrosion coating 01 is fixedly sprayed on the outer wall of the protection box 1, an anti-corrosion sleeve 9 is fixedly arranged on the outer periphery of the detection core 4, and the top of the anti-corrosion sleeve 9 is fixed to the bottom of the main body housing 3. By setting the anti-corrosion coating 01 and the anti-corrosion sleeve 9, the anti-corrosion property of the main body can be improved, thereby improving the service life of the T-shaped thermocouple. The scraping wall assembly 8 includes an annular support frame 81. The annular support frame 81 is fixedly arranged on the bottom outer wall of the protection box 1 and is located outside the perforation opened in the protection box 1. A sealing ring 82 is fixedly sleeved on the inner wall of the annular support frame 81. The annular support frame 81 is provided with internal threads. A hollow scraping plate 83 is connected to the internal threads of the annular support frame 81. The annular support frame 81 functions to fix the hollow scraping plate 83. The anti-corrosion sleeve 9 arranged on the outer periphery of the detection core 4 is cleaned by the hollow scraping plate 83. The sealing ring 82 is set to improve the sealing performance of the hollow scraping plate 83 during use. A sealing member 10 is arranged between the lower part of the main body housing 3 and the upper part of the scraping wall assembly 8. Setting the sealing member 10 can improve the sealing performance of the main body during movement.

[0024] Working principle: When using a T-type thermocouple, an external power supply is connected through wire 11. When the hydraulic cylinder 71 is started, the piston rod of the hydraulic cylinder 71 drives the slider 72 to move. The two sliders 72 drive the main body housing 3 to move up and down, so that the detection core 4 and the anti-corrosion sleeve 9 below the main body housing 3 extend out of the protection box 1, which can better adjust the use distance of the detection core 4. If it is necessary to clean the surface of the detection core 4, the piston rod of the hydraulic cylinder 71 drives the main body housing 3 and the internal thermocouple main body 2 to rise through the slider 72 sliding in the chute 73. The hollow scraper 83 on the annular support frame 81 can timely clean the impurities on the surface of the anti-corrosion sleeve 9 on the outer periphery of the detection core 4, preventing the corrosion from affecting the service life of the main body for too long. By providing a main body housing 3 on the thermocouple main body 2, an anti-corrosion coating 01 on the outer periphery of the protection box 1, and an anti-corrosion sleeve 9 on the outer periphery of the detection core 4, the service life of the main body can be extended.

[0025] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A T-type thermocouple, comprising a protective box (1) and a thermocouple main body (2), characterized in that: A main body housing (3) is fixedly arranged on the outer periphery of the thermocouple main body (2). The main body housing (3) is arranged inside a protection box (1). Perforations are formed at the bottoms of both the protection box (1) and the main body housing (3). A detection core (4) is fixedly arranged at the bottom of the thermocouple main body (2). The detection core (4) penetrates through the perforations. A fixing plate (5) is fixedly arranged inside the protection box (1). A control box (6) is installed on the fixing plate (5). The control box (6) is electrically connected to the thermocouple main body (2). A driving assembly (7) for adjusting the height is arranged between the fixing plate (5) and the main body housing (3). A scraping wall assembly (8) for assisting in scraping materials is arranged below the protection box (1). The scraping wall assembly (8) is arranged on the outer periphery of the detection core (4).

2. A T-type thermocouple according to claim 1, characterized in that An anti-corrosion coating (01) is fixedly sprayed on the outer wall of the protection box (1). An anti-corrosion sleeve (9) is fixedly arranged on the outer periphery of the detection core (4). The top of the anti-corrosion sleeve (9) is fixed to the bottom of the main body housing (3).

3. A T-type thermocouple according to claim 1, characterized in that, The driving assembly (7) includes two hydraulic cylinders (71), a slider (72), and two chutes (73). The two hydraulic cylinders (71) are installed on the top of the fixing plate (5). The output ends of the two hydraulic cylinders (71) penetrate through the bottom of the fixing plate (5) through piston rods and are respectively fixedly connected to the two sliders (72). The two sliders (72) are respectively fixed on both sides of the outer wall of the main body housing (3). The two chutes (73) are formed on both sides of the inner wall of the protection box (1). The slider (72) slides in the chute (73).

4. A T-type thermocouple according to claim 1, characterized in that, The scraping wall assembly (8) includes an annular support frame (81). The annular support frame (81) is fixedly arranged on the outer wall of the bottom of the protection box (1) and is located on the outer periphery of the perforation formed in the protection box (1). A sealing ring (82) is fixedly sleeved on the inner wall of the annular support frame (81). The annular support frame (81) is provided with internal threads.

5. A T-type thermocouple according to claim 4, characterized in that, A hollow scraping plate (83) is connected to the internal threads of the annular support frame (81). The hollow scraping plate (83) abuts against and slides on the outer periphery of the anti-corrosion sleeve (9).

6. A T-type thermocouple according to claim 1, characterized in that, A sealing member (10) is arranged between the lower part of the main body housing (3) and the upper part of the scraping wall assembly (8). The sealing member (10) is located on the inner periphery of the perforation formed in the protection box (1).

7. A T-type thermocouple according to claim 1, characterized in that, The protection box (1), the main body housing (3), and the fixing plate (5) are all provided with wire holes. A wire (11) is electrically connected to the thermocouple main body (2). The wire (11) penetrates through the inner circle of the wire hole and extends to the outer wall of the protection box (1).

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