Thermocouple easy to disassemble and assemble

Abstract

The thermocouple comprises a mounting seat and a thermocouple body, the left side of the mounting seat is provided with a through groove, the top of the mounting seat is connected with an abutting plate through a sliding rod arranged in a sliding mode, the left side of the abutting plate is provided with a limiting groove, the front side and the rear side of the bottom of the abutting plate are provided with first limiting blocks, and the thermocouple is provided with a conical block. A plurality of fixing frames are arranged at the edge of the through groove on the mounting seat; second limiting blocks are rotationally arranged at the upper parts of the fixing frames; the sliding rod is sleeved with a spring. A sliding groove is formed in the abutting plate and connected with the sliding rod in a sliding mode. The right side of the abutting plate is slidably connected with the guide rail through a guide rod. According to the utility model, through the suspended clamping design of the conical block and the second limiting block, the traditional thread / flange fixation is replaced, the locking / releasing of the thermocouple can be completed only by transversely pushing the abutting plate, tools are not needed, bolt-free operation is realized, and the risk of secondary damage caused by improper disassembly is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of thermocouple technology, specifically relating to a thermocouple that is easy to disassemble and install. Background Technology

[0002] Thermocouples, as the most commonly used primary instruments in the field of temperature measurement, are widely used in continuous production processes such as petroleum, chemical, metallurgy, power, and aviation. Typically, the measuring end is inserted into the medium being measured, and the tail is permanently fixed to the equipment wall panel through a threaded joint or flange. The wires are led into the junction box through a metal flexible hose or explosion-proof flexible conduit. Although this is relatively secure, 4 to 8 sets of high-temperature fasteners need to be removed when the equipment is inspected, maintained, or when the thermocouple fails and needs to be replaced. The bolts are prone to deformation due to long-term heat, and are very easy to strip or break during disassembly. Once damaged, the entire thermocouple, including the sheath, must be scrapped. According to statistics, about 28% of returned thermocouples are not due to temperature measurement failure, but due to secondary damage caused by improper disassembly. Utility Model Content

[0003] The purpose of this invention is to provide a thermocouple that is easy to disassemble and install, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an easily detachable and installable thermocouple, comprising a mounting base and a thermocouple body, wherein a through groove is opened on the left side of the mounting base, and a backing plate is connected to the top of the mounting base by a sliding rod, a limiting groove is opened on the left side of the backing plate, and first limiting blocks are provided on the front and rear sides of the bottom of the backing plate, a conical block is installed on the thermocouple, and multiple fixing brackets are provided on the mounting base at the edge of the through groove, and a second limiting block is rotatably provided on the upper part of the fixing bracket.

[0005] Preferably, a spring is fitted onto the slide rod.

[0006] Preferably, the abutment plate is provided with a sliding groove, and the sliding groove is slidably connected to the sliding rod.

[0007] Preferably, the mounting base has a guide rail on the top right side, and the right side of the abutment is slidably connected to the guide rail by a guide rod.

[0008] Preferably, the lower part of the fixing frame is provided with a limiting rod.

[0009] Preferably, the thermocouple body includes an insulating protective sleeve, on which a measuring end is fixedly installed, and two sets of thermoelectrodes are welded to the top of the measuring end.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model replaces the traditional threaded / flange fixing with a suspended snap-fit ​​design of a conical block and a second limiting block. The thermocouple can be locked / released simply by pushing the abutment plate laterally. No tools are required, achieving zero-bolt operation and reducing the risk of secondary damage caused by improper disassembly.

[0012] The second limiting block in this invention uses rubber friction and angle self-adaptation to fit the inclined surface of the conical block, providing stable suspension. At the same time, the abutment plate and spring return force press the conical block twice from above, resisting vibration and preventing loosening. The limiting rod limits the maximum opening angle of the second limiting block, ensuring that the conical block and the thermocouple body are always effectively clamped. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is another state diagram of the present invention;

[0015] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0016] Figure 4 This is a partial cross-sectional view of the thermocouple body in this utility model.

[0017] The following numbers are labeled in the diagram: 1-Mounting base, 2-Thermocouple body, 3-Through groove, 4-Slide rod, 5-Support plate, 6-Limiting groove, 7-First limiting block, 8-Conical block, 9-Fixing frame, 10-Second limiting block, 11-Spring, 12-Slide groove, 13-Guide rail, 14-Guide rod, 15-Limiting rod, 201-Insulating protective sleeve, 202-Measuring end, 203-Thermoelectrode. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] like Figures 1 to 4The thermocouple shown includes a mounting base 1 and a thermocouple body 2. The mounting base 1 has a through groove 3 on its left side. A sliding rod 4 is slidably mounted on the top of the mounting base 1, connecting it to a support plate 5. A limiting groove 6 is opened on the left side of the support plate 5. First limiting blocks 7 are provided on the front and rear sides of the bottom of the support plate 5. A conical block 8 is mounted on the thermocouple. Multiple fixing frames 9 are located at the edge of the through groove 3 on the mounting base 1. A second limiting block 10 is rotatably mounted on the upper part of the fixing frame 9. A spring 11 is sleeved on the sliding rod 4. A sliding groove 12 is opened on the support plate 5, and the sliding groove 12 is slidably connected to the sliding rod 4. A guide rail 13 is provided on the top right side of the mounting base 1, and a guide rod 14 is slidably connected to the guide rail 13 on the right side of the support plate 5. A limiting rod 15 is provided at the lower part of the fixing frame 9. The thermocouple body 2 includes an insulating protective sleeve 201, on which a measuring end 202 is fixedly mounted. Two sets of thermoelectrodes 203 are welded to the top of the measuring end 202.

[0021] This invention replaces traditional threaded / flange fixing with a suspended snap-fit ​​design of conical block 8 and second limiting block 10. The thermocouple can be locked / released simply by pushing the abutment plate 5 laterally, without tools, achieving zero-bolt operation and reducing the risk of secondary damage caused by improper disassembly. The second limiting block 10 in this invention conforms to the inclined surface of the conical block 8 through rubber friction and angle self-adaptation, providing stable suspension. At the same time, the restoring force of the abutment plate 5 and spring 11 presses the conical block 8 again from above, resisting vibration and preventing loosening. The limiting rod 15 limits the maximum opening angle of the second limiting block 10, ensuring that the conical block 8 and the thermocouple body 2 are always effectively clamped.

[0022] Example 2

[0023] like Figures 1 to 4 The thermocouple shown is easy to disassemble and install, including a thermocouple body 2. The thermocouple body 2 has a slender rod-shaped structure. Its outer body adopts a three-layer composite insulating protective sleeve 201, which consists of a high-purity alumina ceramic tube, a stainless steel corrugated tube sheath, and a silicone rubber outer protective layer that can withstand a high temperature of 800℃ from the inside out. The three layers are bonded together with high-temperature resistant epoxy adhesive and cured by secondary sintering, which ensures both electrical insulation and mechanical toughness. A measuring end 202 is fixedly installed at the bottom of the insulating protective sleeve 201. Two sets of thermoelectrodes 203 are fixed at the top of the measuring end 202 by laser micro-welding. The thermoelectrodes 203 are located inside the insulating protective sleeve 201. When in use, the thermocouple body 2 can be quickly fixed by inserting it into the equipment wall panel.

[0024] The equipment wall panel is provided with a mounting base 1. A through groove 3 is opened on the left side of the mounting base 1 for installing a thermocouple. A sliding rod 4 is provided on the top of the mounting base 1. A stop plate 5 is slidably mounted on the sliding rod 4. A spring 11 is sleeved on the sliding rod 4. That is, the stop plate 5 can move up and down by moving the sliding rod 4 on the mounting base 1, and the spring 11 provides cushioning. A horizontal sliding groove 12 is opened on the stop plate 5. That is, the sliding rod 4 can also move left and right in the sliding groove 12, driving the stop plate 5 to move left and right. Correspondingly, a guide rail 13 is provided on the right side of the top of the mounting base 1. The right side of the stop plate 5 is slidably connected to the guide rod 14, so that the stop plate 5 can move horizontally stably.

[0025] Furthermore, a conical block 8 is installed on the thermocouple body 2. The conical block 8 has a design with a larger top and a smaller bottom. A limiting groove 6 is opened on the left side of the abutment plate 5. The width of the limiting groove 6 is consistent with that of the thermocouple body 2. Thus, the abutment plate 5 can be fully inserted into the thermocouple body 2 through the limiting groove 6, and the thermocouple is limited by pressing against the top of the conical block 8. To avoid wear and tear on the thermocouple body 2, first limiting blocks 7 made of rubber are also provided on the front and rear sides of the bottom of the abutment plate 5, so that the actual contact part between the thermocouple body 2 and the abutment plate 5 is the first limiting block 7.

[0026] Understandably, in the initial state, the guide rod 14 is located at the far right of the guide rail 13, driving the abutment 5 to move to the right away from the through groove 3. At the same time, the spring 11 is specifically a contraction spring 11, which means that in the normal state, it will drive the abutment 5 to stay at the lowest point. Furthermore, the mounting base 1 is provided with multiple fixing brackets 9 at the edge of the through groove 3. The upper part of the fixing bracket 9 is provided with a second limiting block 10, both ends of which are made of rubber. At the same time, the lower part of the fixing bracket 9 is provided with a limiting rod 15, which is used to limit the rotation angle of the second limiting block 10. The setting of the limiting rod 15 limits the maximum opening size of the lower part of the second limiting block 10 to be smaller than the conical block 8. Therefore, after the thermocouple body 2 is inserted into the through groove 3, it will be suspended and fixed between the second limiting blocks 10 by the conical block 8. At this time, the second limiting block 10 will rotate and adjust to the state that best fits the inclined edge of the conical block 8, and the friction of the rubber material will effectively limit the conical block 8. Next, the support plate 5 is pushed to the left until the thermocouple body 2 is inserted. Then, the force applied to the support plate 5 is stopped. The restoring force of the spring 11 causes the second limiting block 10 on the support plate 5 to limit the conical block 8 from above. Finally, the conical block 8 is used to achieve a stable installation and limit of the thermocouple.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A thermocouple of the easily detachable type comprising a mounting base and a thermocouple body, characterized in that, The mounting base has a through groove on its left side. The top of the mounting base is connected to a backing plate by a sliding rod. The backing plate has a limit groove on its left side. The bottom of the backing plate has first limit blocks on its front and rear sides. A conical block is installed on the thermocouple. Multiple fixing frames are provided on the mounting base at the edge of the through groove. A second limit block is rotatably provided on the upper part of the fixing frame.

2. The easily detachable and installable thermocouple according to claim 1, characterized in that, A spring is fitted onto the slide rod.

3. A thermocouple for easy removable mounting according to claim 1, wherein The abutment plate is provided with a sliding groove, which is slidably connected to the sliding rod.

4. A thermocouple for easy removable mounting according to claim 1, wherein The mounting base is provided with a guide rail on the top right side, and the right side of the abutment is slidably connected to the guide rail by a guide rod.

5. A thermocouple for easy removable mounting according to claim 1, wherein The lower part of the fixed frame is provided with a limiting rod.

6. A thermocouple for easy removable mounting according to claim 1, wherein The thermocouple body includes an insulating protective sleeve, on which a measuring end is fixedly installed, and two sets of thermoelectrodes are welded to the top of the measuring end.

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