Flexible thermocouple fixing device

Abstract

The utility model discloses a flexible thermocouple fixing device which comprises a fixing base, a pressing block and a clamping assembly used for fixing a thermocouple. Wherein a placing groove is formed in one side of the fixed base, the shape of the pressing block is matched with that of the placing groove, the pressing block can be placed in the placing groove, a first through hole is formed in the side face of the fixed base, the clamping assembly is arranged in the first through hole, and a probe of a thermocouple penetrates through the clamping assembly and extends to the surface of the pressing block to be in a horizontal state. A second through hole is formed in the side face of the fixing base, the second through hole is located in the side adjacent to the first through hole, the second through hole is provided with an internal thread and is in threaded connection with a first screw, and the end of the first screw can abut against the side face of the clamping assembly. The thermocouple fixing mode is simple and reliable in installation, the thermocouple does not need to be disassembled for many times, and breakage is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermocouple fixing devices, specifically relating to a flexible thermocouple fixing device. Background Technology

[0002] Temperature control in the reflow oven is a key factor in ensuring welding quality. Temperatures that are too high or too low can lead to poor welding. Using a type K thermocouple allows for high-precision measurement, ensuring the accuracy and reliability of the data.

[0003] Currently, flexible thermocouples are generally used because they can be easily bent and measured at any point. The fixing method is to insert the probe of the K-type thermocouple into the workpiece to be measured. For example, application number 201820186424.5 discloses a flexible temperature measuring device, which includes a flexible temperature sensor. The flexible temperature sensor has a signal transmission line and a temperature measuring head. The temperature measuring head is located at the end of the signal transmission line. The device is characterized by further including a pressure block. A first through hole is provided on the top and bottom surfaces of the pressure block. The flexible temperature sensor passes through the first through hole, and the temperature measuring head of the flexible temperature sensor is located below the bottom surface of the pressure block.

[0004] Its drawback is that K-type thermocouples need to be installed and disassembled multiple times during use. However, K-type thermocouples are generally flexible structures, so they are inconvenient to fix and are prone to breakage after repeated bending. Utility Model Content

[0005] To address the aforementioned technical problems in existing technologies, this utility model provides a flexible thermocouple fixing device, including a fixing base, a pressure block, and a clamping assembly for fixing the thermocouple. The workpiece to be measured can be directly placed on this device, enabling effective and accurate temperature measurement. This utility model's thermocouple fixing method is simple and reliable to install, eliminating the need for repeated disassembly of the thermocouple and preventing breakage.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A flexible thermocouple fixing device includes a fixing base, a pressure block, and a clamping assembly for fixing the thermocouple.

[0008] The fixed base has a placement groove on one side, the shape of the pressure block matches the placement groove, and the pressure block can be placed in the placement groove. The fixed base has a first through hole on its side, the clamping assembly is disposed in the first through hole, the thermocouple probe passes through the clamping assembly and extends to the surface of the pressure block in a horizontal state, and the fixed base has a second through hole on its side, the second through hole is located on the side adjacent to the first through hole, the second through hole has an internal thread and is threaded to a first screw, the end of the first screw can abut against the side of the clamping assembly.

[0009] Furthermore, the clamping assembly includes a first clamping block and a second clamping block arranged symmetrically to each other. The first clamping block and the second clamping block can be spliced ​​to form a cylindrical structure. Semi-circular clamping grooves for thermocouples to pass through are respectively opened on the opposite side of the first clamping block and the second clamping block.

[0010] Furthermore, two pins are fixed to one side of the first clamping block facing the second clamping block, and the second clamping block has pin holes that match the pins.

[0011] Furthermore, the pressure block is provided with a clearance notch located near the clamping assembly.

[0012] Furthermore, the height of the pressure block is higher than the height of the fixed base.

[0013] Furthermore, the pressing block is made of ceramic material.

[0014] Furthermore, a third through hole is provided on one side of the fixed base. The third through hole has an internal thread and is threaded to a second screw. The end of the second screw can abut against the side of the pressure block.

[0015] Compared with existing technologies, the beneficial effects of this solution are:

[0016] This invention provides a flexible thermocouple fixing device, including a fixing base, a pressure block, and a clamping assembly for fixing the thermocouple. The pressure block is placed in a placement groove of the fixing base, and the thermocouple probe is horizontally positioned in a semi-circular groove of the pressure block. The workpiece to be measured can be placed directly on the device. Utilizing the weight of the workpiece itself and the micro-elasticity of the flexible thermocouple, the two are tightly bonded. A ceramic material with poor thermal conductivity is used to isolate the influence of heat radiation around the thermocouple probe, enabling effective and accurate temperature measurement. This invention provides a simple and reliable thermocouple fixing method, eliminating the need for repeated disassembly and preventing breakage of the thermocouple. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the flexible thermocouple fixing device.

[0018] Figure 2 This is a schematic diagram of the fixed base structure;

[0019] Figure 3 This is a cross-sectional view of the flexible thermocouple fixing device;

[0020] Figure 4 This is a cross-sectional view of the clamping assembly.

[0021] Figure 5 This is a schematic diagram of the clamping assembly.

[0022] The reference numerals in the attached drawings are as follows: fixed base 1, placement groove 11, first through hole 12, second through hole 13, third through hole 14, pressure block 2, clearance notch 21, clamping assembly 3, first clamping block 31, semi-circular clamping groove 311, second clamping block 32, pin hole 321, pin 33, thermocouple probe 4, thermocouple extension wire 41. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] A flexible thermocouple fixing device, such as Figure 1 and Figure 2 and Figure 3 As shown, it includes a fixed base 1, a pressure block 2, and a clamping assembly 3 for fixing the thermocouple;

[0025] The fixed base 1 has a placement groove 11 on one side, the shape of the pressure block 2 matches the placement groove 11, and the pressure block 2 can be placed in the placement groove 11. The fixed base 1 has a first through hole 12 on its side, the clamping assembly 3 is disposed in the first through hole 12, the probe of the thermocouple passes through the clamping assembly 3 and extends to the surface of the pressure block 2 in a horizontal state, and the fixed base 1 has a second through hole 13 on its side, the second through hole 13 is located on the side adjacent to the first through hole 12, the second through hole 13 has an internal thread and is threaded to a first screw, the end of the first screw can abut against the side of the clamping assembly 3.

[0026] According to a specific embodiment of this utility model, the fixed base 1 can adopt a hexahedral structure, such as a cuboid or a cube structure. A placement groove 11 is formed on the upper surface of the fixed base 1, and first through holes 12 are formed on the sides at both ends of the fixed base 1. The clamping assembly 3 is clearance-fitted with the fixed base 1. The thermocouple probe passes through the clamping assembly 3, and the extension wire of the thermocouple is located inside the clamping assembly 3, passing through the pressure block 2 and extending to the surface of the pressure block 2. A semi-circular groove is horizontally formed on the upper surface of the pressure block 2 for placing the thermocouple probe. In use, the pressure block 2 is placed in the placement groove 11 of the fixed base 1, and the thermocouple probe is horizontally positioned in the semi-circular groove of the pressure block 2, thereby contacting and engaging with the workpiece to be tested. The thermocouple of this utility model uses an existing K-type armored thermocouple, with the thermocouple probe 4 as the end, used to detect temperature. The thermocouple extension wire 41 connected to the thermocouple probe 4 is a flexible metal structure.

[0027] Furthermore, such as Figure 4 and Figure 5 As shown, the clamping assembly 3 includes a first clamping block 31 and a second clamping block 32 arranged symmetrically to each other. The first clamping block 31 and the second clamping block 32 can be spliced ​​to form a cylindrical structure. Semi-circular clamping grooves 311 for thermocouples to pass through are respectively opened on the opposite side of the first clamping block 31 and the second clamping block 32.

[0028] Furthermore, two pins 33 are fixed on the side of the first clamping block 31 facing the second clamping block 32, and the second clamping block 32 has pin holes 321 that match the pins 33.

[0029] According to a specific embodiment of this utility model, the first clamping block 31 and the second clamping block 32 are semi-cylindrical structures. The first clamping block 31 and the second clamping block 32 are located in the first through hole 12 of the fixed base 1. The first clamping block 31 and the second clamping block 32 are spliced ​​to form a cylindrical structure. During installation, the first screw is screwed into the second through hole 13, so that the end of the first screw abuts against the side of the second clamping block 32 or the first clamping block 31. The thermocouple extension wire 41 passes through the semi-circular clamping groove 311 and is thus fixed in the first through hole 12. To make the connection between the first clamping block 31 and the second clamping block 32 more stable, two pins 33 are fixed to the side of the first clamping block 31 facing the second clamping block 32. The pins 33 are located on both sides of the semi-circular clamping groove 311. The second clamping block 32 is provided with pin holes 321 that match the pins 33. When the first clamping block 31 and the second clamping block 32 are located in the first through hole 12, the pins 33 are inserted into the corresponding pin holes 321, making the connection between the first clamping block 31 and the second clamping block 32 more stable.

[0030] Furthermore, the pressure block 2 is provided with a clearance notch 21, which is located near the clamping assembly 3. The purpose of installing the pressure block 2 in the fixed base 1 is to allow relative displacement between the pressure block 2 and the clamping assembly 3, thereby preventing damage to the thermocouple extension wire 41 when relative displacement occurs.

[0031] Furthermore, the height of the pressure block 2 is higher than the height of the fixed base 1, so that the workpiece with temperature measurement can make better contact with the thermocouple probe 4.

[0032] Furthermore, the pressing block 2 is made of ceramic material.

[0033] In practical use, the material of the clamping component 3 of the flexible thermocouple will affect the thermal radiation temperature around the thermocouple probe 4 due to the difference in thermal conductivity, resulting in inaccurate temperature measurement data. In this embodiment, the pressure block 2 is made of ceramic material. Ceramic has poor thermal conductivity, which further avoids the thermal radiation temperature around the thermocouple probe 4, making the measured temperature more accurate.

[0034] Furthermore, such as Figure 1 and Figure 2As shown, a third through hole 14 is provided on one side of the fixed base 1. The third through hole 14 has an internal thread and is threadedly connected to a second screw. The end of the second screw can abut against the side of the pressure block 2. This embodiment provides a structure for fixing the pressure block 2 and the fixed base 1 together. A third through hole 14 is provided on one side of the length of the fixed base 1. The third through hole 14 is located on the adjacent side of the first through hole 12. The third through hole 14 can be set on the same side as the second through hole 13, or it can be set on the opposite side of the second through hole 13. Specifically, the third through hole 14 is located in the middle of the side of the fixed base 1, so that the second screw abuts against the pressure block 2.

[0035] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible thermocouple fixing device, characterized in that: Includes a fixed base, pressure block, and clamping assembly for fixing the thermocouple; The fixed base has a placement groove on one side, the shape of the pressure block matches the placement groove, and the pressure block can be placed in the placement groove. The fixed base has a first through hole on its side, the clamping assembly is disposed in the first through hole, the thermocouple probe passes through the clamping assembly and extends to the surface of the pressure block in a horizontal state, and the fixed base has a second through hole on its side, the second through hole is located on the side adjacent to the first through hole, the second through hole has an internal thread and is threaded to a first screw, the end of the first screw can abut against the side of the clamping assembly.

2. The flexible thermocouple fixing device according to claim 1, characterized in that: The clamping assembly includes a first clamping block and a second clamping block arranged symmetrically to each other. The first clamping block and the second clamping block can be spliced ​​to form a cylindrical structure. Semi-circular clamping grooves for thermocouples to pass through are respectively opened on the opposite side of the first clamping block and the second clamping block.

3. The flexible thermocouple fixing device according to claim 2, characterized in that: Two pins are fixed to the side of the first clamping block facing the second clamping block, and the second clamping block has pin holes that match the pins.

4. The flexible thermocouple fixing device according to claim 3, characterized in that: The pressure block is provided with a clearance notch, which is located near the clamping assembly.

5. A flexible thermocouple fixing device according to claim 4, characterized in that: The height of the pressure block is higher than the height of the fixed base.

6. The flexible thermocouple fixing device according to claim 5, characterized in that: The pressing block is made of ceramic material.

7. A flexible thermocouple fixing device according to any one of claims 1-6, characterized in that: The fixed base has a third through hole on one side, the third through hole has an internal thread, and a second screw is threadedly connected to the third through hole. The end of the second screw can abut against the side of the pressure block.

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