Wear-resistant thermocouple with protective sleeve

Abstract

The utility model provides a wear-resistant thermocouple with a protective sleeve, and belongs to the technical field of thermocouples. Comprising a body, the body comprises a wire holder, a connecting shaft and a thermocouple core, and the bottom of the connecting shaft is provided with a protection assembly; the protection assembly comprises an annular groove formed in the bottom of the connecting shaft. The end portion of the protection pipe is inserted into the annular groove, when the clamping block is extruded by the protection pipe, the clamping block moves towards the deep position of the circular groove, after the protection pipe is completely inserted into the annular groove, the clamping block is not extruded, and the connecting block and the clamping block are moved towards the protection pipe through the spring till the connecting block and the clamping block are connected with the protection pipe in a clamped mode. When the protection tube needs to be disassembled, only a rotating ring needs to be rotated, a connecting rope is driven to move through the rotating ring, then a connecting block and a clamping block are pulled to move towards the deep position of a circular groove, at the moment, the clamping block is separated from the protection tube, and the disassembly and assembly efficiency of the protection tube can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to a wear-resistant thermocouple with a protective sleeve. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments).

[0003] When the existing thermocouple is in use, the measurement is performed by contacting the thermocouple core with the measuring point. During the long-term use of the thermocouple, not only will the thermocouple core be worn during use, but the thermocouple core is also lacking in protection during storage. In order to address the above problems and defects, a wear-resistant thermocouple with a protective sleeve is urgently needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wear-resistant thermocouple with a protective sleeve to solve the problem that the existing thermocouple, when in use, measures by contacting the thermocouple core with the measuring point, and during long-term use of the thermocouple, not only will the thermocouple core be worn during use, but the thermocouple core is also lacking in protection during storage.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A wear-resistant thermocouple with a protective sleeve comprises: a main body, the main body comprises a terminal seat, a connecting shaft and a thermocouple core, a protective component is arranged at the bottom of the connecting shaft; the protective component comprises an annular groove opened at the bottom of the connecting shaft, the inner wall of the annular groove is opened with a circular groove, the inner wall of the circular groove is fixedly equipped with a spring, the end of the spring away from the circular groove is fixedly equipped with a connecting block, the side of the connecting block away from the spring is fixedly equipped with a clamping block, the outer wall of the clamping block is clamped with a protective tube, the outer wall of the connecting shaft is opened with a connecting groove, the inner wall of the connecting groove is rotatably connected with a swivel, the side of the connecting block close to the spring is fixedly connected with a connecting rope, and the end of the connecting rope away from the connecting block is fixedly connected to the inner wall of the swivel.

[0007] A positioning groove is provided at the bottom of the connecting shaft, a positioning pin is fixedly mounted on the inner wall of the positioning groove, and the bottom of the positioning pin is fixedly connected to the outer wall of the protective tube.

[0008] A rubber pad is fixedly mounted on the bottom of the connecting shaft, and the bottom of the rubber pad abuts against the outer wall of the protection tube.

[0009] The cross-sectional shape of the clamping block is a right-angled trapezoid, and the hypotenuse of the clamping block is the side close to the protection tube.

[0010] The number of the springs, the connecting blocks, the clamping blocks and the connecting ropes is four, and the four springs, the connecting blocks, the clamping blocks and the connecting ropes are evenly distributed on the circumferential side of the inner wall of the annular groove.

[0011] The side of the protection tube close to the annular groove adopts a rounded corner design.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. In the above scheme, the end of the protective tube is inserted into the inside of the annular groove. When the clamping block is squeezed by the protective tube, the clamping block moves to the depth of the circular groove. When the protective tube is fully inserted into the annular groove, the clamping block is no longer squeezed, and the connecting block and the clamping block are moved toward the protective tube by the spring until they are engaged with the protective tube. At this time, the protective tube can be fixed on the main body to protect the thermocouple core. When the protective tube needs to be disassembled, it is only necessary to rotate the swivel to drive the connecting rope to move through the swivel and then pull the connecting block and the clamping block to move to the depth of the circular groove. At this time, the clamping block is separated from the protective tube, which is beneficial to improve the efficiency of disassembly and assembly of the protective tube.

[0014] 2. In the above scheme, by providing the positioning groove and the positioning pin, it is helpful to position and guide the protection tube, thereby improving the stability and firmness of the installation of the protection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a wear-resistant thermocouple with a protective sleeve;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of a wear-resistant thermocouple with a protective sleeve from the first perspective;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at A in the middle.

[0019] [Reference Signs]

[0020] 1. Main body; 11. Terminal block; 12. Connecting shaft; 13. Thermocouple core;

[0021] 2. Protective assembly; 21. Annular groove; 22. Circular groove; 23. Spring; 24. Connecting block; 25. Clamping block; 26. Protective tube; 27. Connecting groove; 28. Swivel; 29. ​​Connecting rope;

[0022] 3. Positioning groove; 4. Positioning pin; 5. Rubber pad.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0024] The following is a detailed description of a wear-resistant thermocouple with a protective sleeve provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are listed as the best and preferred embodiments, and other alternatives can also be used by technicians in some known technical fields; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0025] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0026] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0027] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0028] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model provides a wear-resistant thermocouple with a protective sleeve, comprising: a body 1, the body 1 comprising a terminal block 11, a connecting shaft 12 and a thermocouple core 13, a protective component 2 is arranged at the bottom of the connecting shaft 12; the protective component 2 comprises an annular groove 21 opened at the bottom of the connecting shaft 12, a circular groove 22 is opened on the inner wall of the annular groove 21, a spring 23 providing elastic force is fixedly assembled on the inner wall of the circular groove 22, a connecting block 24 is fixedly assembled on one end of the spring 23 away from the circular groove 22, a clamping block 25 is fixedly assembled on the side of the connecting block 24 away from the spring 23, a protective tube 26 is clamped on the outer wall of the clamping block 25, and a connecting block 24 is fixedly assembled on the side of the connecting block 24 away from the spring 23. A connecting groove 27 is provided on the outer wall of the shaft 12, and a swivel 28 is rotatably connected to the inner wall of the connecting groove 27. A connecting rope 29 is fixedly connected to the side of the connecting block 24 close to the spring 23, and the end of the connecting rope 29 away from the connecting block 24 is fixedly connected to the inner wall of the swivel 28. There are four springs 23, connecting blocks 24, clamping blocks 25 and connecting ropes 29, and the four springs 23, connecting blocks 24, clamping blocks 25 and connecting ropes 29 are evenly distributed on the circumferential side of the inner wall of the annular groove 21. By limiting the number and position of the springs 23, connecting blocks 24, clamping blocks 25 and connecting ropes 29, it is beneficial to improve the firmness of the connection to the protective tube 26.

[0030] like Figure 2 and Figure 3 As shown, a positioning groove 3 is provided at the bottom of the connecting shaft 12, and a positioning pin 4 is fixedly installed on the inner wall of the positioning groove 3. The bottom of the positioning pin 4 is fixedly connected to the outer wall of the protective tube 26. By setting the positioning groove 3 and the positioning pin 4, it is beneficial to position and guide the protective tube 26, thereby improving the stability and firmness of the installation of the protective tube 26.

[0031] like Figure 2 and Figure 3 As shown, a rubber pad 5 is fixedly mounted on the bottom of the connecting shaft 12, and the bottom of the rubber pad 5 abuts against the outer wall of the protective tube 26. The provision of the rubber pad 5 is beneficial to improving the sealing and tightness of the connection between the connecting shaft 12 and the protective tube 26.

[0032] like Figure 2 and Figure 3As shown, the cross-sectional shape of the block 25 is a right-angled trapezoid, and the hypotenuse of the block 25 is the side close to the protection tube 26. By limiting the block 25, it is helpful to improve the smoothness of inserting the protection tube 26.

[0033] like Figure 2 and Figure 3 As shown, the side of the protection tube 26 close to the annular groove 21 adopts a rounded corner design. The rounded corner design at the end of the protection tube 26 is helpful to guide the protection tube 26 when the protection tube 26 is inserted into the annular groove 21.

[0034] The technical solution provided by the utility model is that when working, the end of the protection tube 26 is inserted into the inner part of the annular groove 21. When the clamping block 25 is squeezed by the protection tube 26, the clamping block 25 moves to the depth of the circular groove 22. When the protection tube 26 is completely inserted into the annular groove 21, the clamping block 25 is no longer squeezed. The connecting block 24 and the clamping block 25 are moved to the protection tube 26 by the spring 23 until they are clamped with the protection tube 26. At this time, the protection tube 26 can be fixed on the body 1 to protect the thermocouple core 13. When the protection tube 26 needs to be disassembled, it is only necessary to rotate the swivel 28, and the swivel 28 drives the connecting rope 29 to move and then pull the connecting block 24 and the clamping block 25 to move to the depth of the circular groove 22. At this time, the clamping block 25 is separated from the protection tube 26.

[0035] The positioning groove 3 and the positioning pin 4 are provided to facilitate positioning and guiding the protection tube 26 , thereby improving the stability and firmness of the installation of the protection tube 26 .

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wear-resistant thermocouple with a protective sleeve, characterized in that: include: A main body (1), the main body (1) comprising a wiring seat (11), a connecting shaft (12) and a thermocouple core (13), and a protective component (2) is provided at the bottom of the connecting shaft (12); The protection component (2) comprises an annular groove (21) formed at the bottom of the connecting shaft (12); a circular groove (22) is formed on the inner wall of the annular groove (21); a spring (23) is fixedly mounted on the inner wall of the circular groove (22); a connecting block (24) is fixedly mounted on one end of the spring (23) away from the circular groove (22); a clamping block (25) is fixedly mounted on the side of the connecting block (24) away from the spring (23); a protection tube (26) is clamped on the outer wall of the clamping block (25); a connecting groove (27) is formed on the outer wall of the connecting shaft (12); a swivel (28) is rotatably mounted on the inner wall of the connecting groove (27); a connecting rope (29) is fixedly mounted on the side of the connecting block (24) close to the spring (23); and an end of the connecting rope (29) away from the connecting block (24) is fixedly mounted on the inner wall of the swivel (28).

2. The wear-resistant thermocouple with a protective sleeve according to claim 1, characterized in that: A positioning groove (3) is provided at the bottom of the connecting shaft (12), a positioning pin (4) is fixedly mounted on the inner wall of the positioning groove (3), and the bottom of the positioning pin (4) is fixedly connected to the outer wall of the protective tube (26).

3. The wear-resistant thermocouple with a protective sleeve according to claim 1, characterized in that: A rubber pad (5) is fixedly mounted on the bottom of the connecting shaft (12), and the bottom of the rubber pad (5) abuts against the outer wall of the protective tube (26).

4. The wear-resistant thermocouple with a protective sleeve according to claim 1, characterized in that: The cross-sectional shape of the clamping block (25) is a right-angled trapezoid, and the hypotenuse of the clamping block (25) is the side close to the protective tube (26).

5. The wear-resistant thermocouple with a protective sleeve according to claim 1, characterized in that: The number of the spring (23), the connection block (24), the clamping block (25) and the connection rope (29) is four, and the four springs (23), the connection block (24), the clamping block (25) and the connection rope (29) are evenly distributed on the circumference of the inner wall of the annular groove (21).

6. The wear-resistant thermocouple with a protective sleeve according to claim 1, characterized in that: The side of the protection tube (26) close to the annular groove (21) is designed with rounded corners.

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