Thermocouple easy to disassemble and assemble

Abstract

The utility model discloses a thermocouple easy to disassemble and assemble, which belongs to the technical field of thermocouple installation and comprises a thermocouple body, and a protective sleeve is arranged at the bottom of the thermocouple body. The device further comprises a first fixing structure used for being connected with a flange plate outside the temperature measuring pipeline, the first fixing structure comprises a movable ring, a round hole is formed in the center of the top of the movable ring and is in sliding fit with the protective sleeve, and a first threaded hole is formed in the center of the bottom of the movable ring and is in sliding fit with the protective sleeve. A sealing rubber ring is adhered to the top of the first threaded hole; the second fixing structure is arranged on the outer side of the flange plate, the structure is simple, convenience and practicability are achieved, the movable ring and the flange plate can be fixed by fixing the movable ring and the second fixing structure, the flange plate can be continuously used without being replaced, the use cost is reduced, the movable ring and the second fixing structure can play a role in protecting the flange plate, and the practicability is high. And continuous aging and corrosion of the flange plate are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouple installation, in particular to a thermocouple that is easy to disassemble and install. Background Art

[0002] Thermocouple is a commonly used temperature measuring element in temperature measuring instruments. It directly measures temperature and converts temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). The appearance of various thermocouples is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as hot electrodes, insulating sleeve protection tubes and junction boxes. They are usually used in conjunction with display instruments, recording instruments and electronic regulators. The fixing devices of thermocouples are divided into six types: no fixing device type, threaded type, fixed flange type, movable flange type, movable flange angle square type, and conical protection tube type.

[0003] After searching, in the prior art, Chinese patent publication number: CN212903622U discloses a fixed flange type thermocouple. The utility model includes a wiring housing, a wiring cover, a tailstock, a fastening block, a protective tube, a threaded sleeve, a flange, a temperature sensor and a thermistor. The threaded sleeve is spirally fitted with a flange, the wiring housing is equipped with a temperature sensor, the bottom of the protective tube is equipped with a thermistor, the temperature sensor and the thermistor are connected through pins, the threaded sleeve is fitted on the protective tube, and the flange is spirally fitted on the threaded sleeve, and the flange is fixedly connected to the outside of the temperature measuring pipe through the flange, and the fixed position of the flange can be controlled by adjusting the screw at any time, thereby realizing the measurement of liquid temperature at different depths, and the bottom of the flange is equipped with a sealing ring to play a sealing role, the temperature sensor is installed inside the wiring housing through a stabilizing block, the signal transmitted by the thermistor is transmitted to the signal receiver, and the signal receiver can transmit the signal to the display instrument, the temperature measurement is accurate, and the installation is simple.

[0004] But this device still has the following defects:

[0005] The flange on the outside of the temperature measuring pipe is in a high temperature and high humidity environment for a long time, and there is a possibility of corrosion by chemicals. Once the flange on the outside of the temperature measuring pipe is aged and rusted, it is easy to cause unstable connection with the thermocouple, and there is a risk of leakage of items in the temperature measuring pipe. Replacing the new flange is rather cumbersome, and the device does not solve this problem. Utility Model Content

[0006] The purpose of the utility model is to provide a thermocouple that is easy to disassemble and install. By arranging a second fixed structure on the outside of a flange and fixing a movable ring to the second fixed structure, the movable ring can be fixed to the flange, and the flange can be continuously used without replacing the flange, thereby reducing the cost of use. In addition, the movable ring and the second fixed structure can protect the flange to prevent the flange from further aging and rusting, thereby solving the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A thermocouple that is easily detachable and installed, comprising a thermocouple body, wherein a protective sleeve is provided at the bottom of the thermocouple body;

[0009] It also includes a first fixing structure for connecting to a flange outside the temperature measuring pipe, wherein the first fixing structure includes a moving ring, a circular hole is provided at the top center of the moving ring, the circular hole is slidably matched with the protective sleeve, a first threaded hole is provided at the bottom center of the moving ring, and a sealing rubber ring is bonded to the top of the first threaded hole;

[0010] It also includes a second fixing structure for connecting to the first fixing structure, a threaded structure for cooperating with the first threaded hole is arranged on the top of the second fixing structure, and an inner cavity for clamping the temperature measuring pipe and the flange is opened inside the second fixing structure.

[0011] Preferably, the first fixing structure further includes two groups of first adjusting bolts, and the first adjusting bolts are threadedly matched with two sides of the top of the movable ring.

[0012] Preferably, a sealing fastening plate is rotatably mounted on the first adjusting bolt inside the circular hole, and the sealing fastening plate is slidably matched with the movable chambers opened on both sides of the circular hole.

[0013] Preferably, a first screwing portion for facilitating screwing is provided on the outer side of the movable ring, and the first screwing portion is fixedly connected to the lower side wall of the movable ring.

[0014] Preferably, the second fixing structure comprises two groups of symmetrically arranged semicircular rings, and countersunk threaded holes are formed on both sides of the semicircular rings.

[0015] Preferably, the semicircular ring is fixedly connected by a fixing bolt, and the fixing bolt is threadedly matched with the countersunk threaded hole.

[0016] Preferably, a second twisting portion for facilitating twisting is provided on the outer side of the semicircular ring, and the second twisting portion is fixedly connected to the lower side wall of the semicircular ring.

[0017] Preferably, the thermocouple body comprises an insulating sleeve, a protective sleeve is fixedly mounted on the outside of the insulating sleeve, a measuring end is fixedly mounted on the bottom of the insulating sleeve, two groups of thermodes made of different materials are welded to the top of the measuring end, and the thermodes are arranged inside the insulating sleeve.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model arranges the second fixing structure on the outside of the flange, which has a simple structure, is convenient and practical, and fixes the movable ring and the second fixing structure so that the movable ring and the flange can be fixed, and the flange can be continuously used without replacing the flange, thereby reducing the use cost, and the movable ring and the second fixing structure can protect the flange to prevent the flange from further aging and rusting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 is a schematic diagram of a cross-sectional structure of a first fixed structure;

[0022] Figure 3 It is a schematic diagram of the explosion separation structure of the second fixed structure;

[0023] Figure 4 It is a schematic diagram of the local cross-sectional structure of the thermocouple body.

[0024] In the figure: 1. thermocouple body; 101. insulating sleeve; 102. measuring end; 103. thermoelectrode; 2. protective sleeve; 3. first fixed structure; 301. movable ring; 302. round hole; 303. first threaded hole; 304. sealing rubber ring; 305. first adjusting bolt; 306. sealing fastening plate; 307. movable chamber; 308. first screwing part; 4. second fixed structure; 401. inner cavity; 402. semicircular ring; 403. countersunk threaded hole; 404. fixing bolt; 405. second screwing part. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 4 , the utility model provides a technical solution:

[0027] A thermocouple that is easy to disassemble and install comprises a thermocouple body 1, wherein the thermocouple body 1 comprises an insulating sleeve 101, a protective sleeve 2 is fixedly installed on the outer side of the insulating sleeve 101, and the insulating sleeve 101 can be protected by providing the protective sleeve 2, thereby improving the service life of the thermocouple body 1; a measuring end 102 is fixedly installed on the bottom of the insulating sleeve 101, and two groups of thermoelectrodes 103 made of different materials are welded on the top of the measuring end 102, and the thermoelectrodes 103 are arranged inside the insulating sleeve 101. By arranging the measuring end 102 on the outer side of the bottom of the insulating sleeve 101, the measuring end 102 can be directly in contact with the object to be measured, thereby improving the accuracy of measurement;

[0028] The first fixing structure 3 also includes a first fixing structure 3 for connecting to a flange outside the temperature measuring pipe, the first fixing structure 3 includes a moving ring 301, a circular hole 302 is provided at the top center of the moving ring 301, the circular hole 302 is slidably matched with the protective sleeve 2, a first threaded hole 303 is provided at the bottom center of the moving ring 301, a sealing rubber ring 304 is bonded to the top of the first threaded hole 303, the first fixing structure 3 also includes two groups of first adjusting bolts 305, the first adjusting bolts 305 are threadedly matched with the two sides of the top of the moving ring 301, the first adjusting bolts 305 are rotatably installed with a sealing fastening plate 306 inside the circular hole 302, and the sealing fastening plate 306 is rotatably mounted inside the circular hole 302. The fixed plate 306 is slidably matched with the movable chamber 307 opened on both sides of the circular hole 302. A first screwing portion 308 for easy screwing is provided on the outer side of the movable ring 301. The first screwing portion 308 is fixedly connected to the lower side wall of the movable ring 301. By setting the movable ring 301, it can be moved on the surface of the protective sleeve 2, so that the depth of the thermocouple body 1 inserted into the temperature measuring pipe can be adjusted. In combination with two sets of sealing and fastening plates 306, the position of the thermocouple body 1 can be fixed. At the same time, the two sets of sealing and fastening plates 306 are pressed together to form an annular body to seal between the protective sleeve 2 and the movable ring 301.

[0029] The second fixing structure 4 is also included for connecting with the first fixing structure 3. The top of the second fixing structure 4 is provided with a threaded structure for use with the first threaded hole 303. The interior of the second fixing structure 4 is provided with an inner cavity 401 for clamping the temperature measuring pipe and the flange. The second fixing structure 4 includes two groups of symmetrically arranged semicircular rings 402. Countersunk threaded holes 403 are provided on both sides of the semicircular rings 402. The semicircular rings 402 are fixedly connected by fixing bolts 404. The fixing bolts 404 are threadedly matched with the countersunk threaded holes 403. The outer side of the semicircular rings 402 is provided with a second screwing portion for easy screwing. 405, the second screwing portion 405 is fixedly connected to the lower side wall of the semicircular ring 402, and by arranging two sets of second fixed structures 4 on the outside of the flange, the flange can be pulled to press against the sealing rubber ring 304 to achieve sealing, and by threading the movable ring 301 with the second fixed structure 4, the movable ring 301 can be fixedly connected to the flange, so that the thermocouple body 1 is fixed to the flange and the temperature measuring pipe, and can continue to be used without replacing the flange, thereby reducing the cost of use, and the movable ring 301 and the second fixed structure 4 can protect the flange to prevent the flange from continuing to age and rust.

[0030] When in use, the device is moved to the outside of the designated temperature measuring pipe, and the two groups of semicircular rings 402 are tightly attached to the two sides of the temperature measuring pipe and the flange, and fixed by fixing bolts 404 so that they are sleeved on the outside of the flange, and the bottom of the thermocouple body 1 is inserted into the temperature measuring pipe, and the first fixed structure 3 is moved so that the moving ring 301 is close to the second fixed structure 4, and the first threaded hole 303 is aligned with the top of the second fixed structure 4, and the two are tightened and fixed by external tools, and the top of the second fixed structure 4 and the flange are pressed against the bottom of the sealing rubber ring 304, and the thermocouple body 1 is moved, and the temperature measuring end is inserted into the designated measuring position in the temperature measuring pipe, and the first adjusting bolt 305 is rotated by an external tool, and the first adjusting bolt 305 threadedly connected to the moving ring 301 begins to move toward the inside of the moving ring 301, thereby pushing the sealing fastening plate 306 to press against the protective sleeve 2, and the protective sleeve 2 and the moving ring 301 are sealed and fixedly connected.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermocouple that is easily detachable and installed, characterized in that: It comprises a thermocouple body (1), wherein a protective sleeve (2) is provided at the bottom of the thermocouple body (1); It also includes a first fixing structure (3) for connecting to a flange outside the temperature measuring pipe, wherein the first fixing structure (3) includes a moving ring (301), a circular hole (302) is provided at the center of the top of the moving ring (301), the circular hole (302) is slidably matched with the protective sleeve (2), a first threaded hole (303) is provided at the center of the bottom of the moving ring (301), and a sealing rubber ring (304) is bonded to the top of the first threaded hole (303); It also includes a second fixing structure (4) for connecting to the first fixing structure (3), the top of the second fixing structure (4) is provided with a threaded structure for use with the first threaded hole (303), and the interior of the second fixing structure (4) is provided with an inner cavity (401) for clamping the temperature measuring pipe and the flange.

2. The easily detachable thermocouple according to claim 1, characterized in that: The first fixing structure (3) further comprises two groups of first adjusting bolts (305), wherein the first adjusting bolts (305) are threadedly matched with two sides of the top of the moving ring (301).

3. The easily detachable thermocouple according to claim 2, characterized in that: The first adjusting bolt (305) is rotatably mounted with a sealing fastening plate (306) inside the circular hole (302), and the sealing fastening plate (306) is slidably matched with the movable chambers (307) opened on both sides of the circular hole (302).

4. The easily detachable thermocouple according to claim 3, characterized in that: A first screwing portion (308) for easy screwing is provided on the outer side of the moving ring (301), and the first screwing portion (308) is fixedly connected to the lower side wall of the moving ring (301).

5. The easily detachable thermocouple according to claim 1, characterized in that: The second fixing structure (4) comprises two groups of symmetrically arranged semicircular rings (402), and countersunk threaded holes (403) are provided on both sides of the semicircular rings (402).

6. The easily detachable thermocouple according to claim 5, characterized in that: The semicircular ring (402) is fixedly connected via a fixing bolt (404), and the fixing bolt (404) is threadedly matched with the countersunk threaded hole (403).

7. The easily detachable thermocouple according to claim 6, characterized in that: A second twisting portion (405) is arranged on the outer side of the semicircular ring (402) for easy twisting, and the second twisting portion (405) is fixedly connected to the lower side wall of the semicircular ring (402).

8. The easily detachable thermocouple according to claim 1, characterized in that: The thermocouple body (1) comprises an insulating sleeve (101), a protective sleeve (2) is fixedly mounted on the outside of the insulating sleeve (101), a measuring end (102) is fixedly mounted on the bottom of the insulating sleeve (101), two groups of thermoelectrodes (103) made of different materials are welded to the top of the measuring end (102), and the thermoelectrodes (103) are arranged inside the insulating sleeve (101).

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