Detection tool for welding point position of thermocouple sensor

Abstract

The utility model provides a thermocouple sensor welding point position detection tool which comprises a tool frame, the tool frame is formed by a bottom plate and side plates in a surrounding mode, and a partition plate is arranged in the tool frame. The partition plates are perpendicularly fixed to the bottom plate, and the interior of the tool frame is divided into a limiting cavity, a temperature control cavity, a feedback cavity and a constant-temperature cavity. The thermocouple sensor is at least partially accommodated in the constant temperature chamber. According to the detection tool for the welding point position of the thermocouple sensor, the position of the welding point is reflected by using the length of the thermocouple sensor extending into the detection tool, rapid detection of the welding point of the thermocouple sensor is realized, and meanwhile, the detection tool is clear in structure, reasonable in cost and suitable for mass production.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor processing, in particular to a tool for detecting the position of a welding point of a thermocouple sensor. Background Art

[0002] Thermocouples are a commonly used temperature measurement sensor, typically used in conjunction with temperature transmitters, regulators, and display instruments to form a temperature measurement and control system. The thermocouple's main components are welded together from two different types of metal. The position of the weld determines the accuracy of the thermocouple's temperature measurement. Therefore, the correct placement of the thermocouple's welds determines the sensor's quality.

[0003] Currently, most thermocouple sensors on the market rely on flaw detection, a method that is inefficient, expensive, and harmful to the operator's health. Therefore, how to quickly and effectively detect weld locations has become a pressing issue in thermocouple manufacturing. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a tool for detecting the position of the welding point of a thermocouple sensor.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides the following technical solutions:

[0006] A tool for detecting the welding point position of a thermocouple sensor is characterized by a mounting frame, which is composed of a bottom plate and side plates, and a partition is provided inside the tool frame; the partition is vertically fixed to the bottom plate, and separates a limit chamber, a temperature control chamber, a feedback chamber and a constant temperature chamber inside the tool frame; the thermocouple sensor is at least partially accommodated in the constant temperature chamber, and is connected to the feedback chamber through a wire to form a test loop.

[0007] Furthermore, a limiting device is provided in the limiting chamber, and the side plate includes a first side plate; the limiting device passes through the partition and extends into the constant temperature chamber, and moves back and forth in the constant temperature chamber along the length direction of the first side plate.

[0008] Furthermore, the limiting device includes a threaded rod and a limiting block, which are threadedly matched, and the limiting block is arranged at one end of the threaded rod close to the constant temperature chamber.

[0009] Furthermore, the side panel also includes a second side panel, which is provided with a positioning hole; a group of positioning blocks are provided in the positioning hole, and the positioning blocks are detachably installed in the positioning hole, and the positioning blocks are arranged opposite to the limit blocks.

[0010] Furthermore, a temperature control device is provided in the temperature control chamber, which includes a heating component and a heating pipe. The heating component is fixedly mounted on the bottom plate and accommodated in the temperature control chamber; the two ends of the heating pipe are respectively connected to the constant temperature chamber and the heating component.

[0011] Furthermore, a feedback device for testing the qualified rate of the welding point position of the thermocouple sensor is provided in the feedback chamber.

[0012] Furthermore, a group of jacks are provided on the third side plate, and the jacks pass through the third side plate, so that the wires of the thermocouple sensor can extend into the feedback chamber and be connected to the feedback device electrical signal.

[0013] Furthermore, the side panel also includes a fourth side panel, and the limiting device includes a rotating wheel, which is rotatably mounted on the fourth side panel and connected to the threaded rod to adjust the position of the limiting block.

[0014] Furthermore, it also includes a cover plate, which is located above the side plate and is used to seal the tooling frame.

[0015] As described above, a tool for detecting the position of the welding point of a thermocouple sensor has the following beneficial effects:

[0016] 1. In the detection tooling for the welding point of the thermocouple sensor, by adjusting the limit device and replacing the positioning block, the detection tooling can be adapted to different types and models of thermocouple sensors, which greatly improves the applicability of the equipment. There is no need to replace the detection equipment, which indirectly reduces the cost of the enterprise.

[0017] 2. The tooling for detecting the welding point position of the thermocouple sensor in the present invention has a clear structure, is convenient for mass production, and greatly reduces the cost of early production and later maintenance for the enterprise.

[0018] 3. The detection tooling for the welding point position of the thermocouple sensor in the present invention only needs to control the temperature and adjust the limit device to the specified position before detecting the welding point positions of the same batch of thermocouple sensors, so as to realize rapid detection of the welding point positions of the thermocouple without causing any harm to the technicians. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic structural diagram of a tool for detecting the welding point position of a thermocouple sensor in the present utility model.

[0020] Figure 2 This is a structural schematic diagram from another perspective of a tooling for detecting the welding point position of a thermocouple sensor in the present invention.

[0021] Figure 3This is a structural schematic diagram from another perspective of a tooling for detecting the welding point position of a thermocouple sensor in the present invention.

[0022] Figure 4 The figure is a schematic diagram of a thermocouple sensor welding point position detection tool in the present invention detecting a thermocouple sensor.

[0023] Among them, 10000, a tool for detecting the position of the welding point of a thermocouple sensor;

[0024] 1. Tooling frame; 11-bottom plate; 12. Side panel; 121. First side panel; 122. Second side panel; 1221. Positioning hole; 123. Third side panel; 1231. Jack; 124. Fourth side panel; 13. Partition; 14. Constant temperature chamber; 15. Limit chamber; 16. Temperature control chamber; 17. Feedback chamber; 2. Limit device; 21. Threaded rod; 22. Limit block; 23. Rotating wheel; 3. Positioning block; 4. Temperature control device; 41. Heating assembly; 42. Heating pipe; 5. Feedback device; 100. Thermocouple sensor. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0027] See also Figures 1 to 4 The utility model provides a tool 10000 for detecting the welding point position of a thermocouple sensor, which is used to quickly detect the position of the welding point of the thermocouple sensor 1000. The tool frame 1 is composed of a bottom plate 11 and a side plate 12, and the tool frame 1 is also provided with a partition 13.

[0028] Specifically, a partition 13 is disposed within the tooling frame 1, separating a constant temperature chamber 14, a position limiting chamber 15, a temperature control chamber 16, and a feedback chamber 17 within the tooling frame 1. The thermocouple sensor 100 is at least partially housed within the constant temperature chamber 14 and connected to the feedback chamber 17 via wires to form a test loop.

[0029] Please continue reading Figure 1 The side plate 12 includes a first side plate 121 , and a tool 10000 for detecting the welding point position of a thermocouple sensor also includes a limiting device 2 .

[0030] Specifically, the limiting device 2 passes through the partition 13 and extends into the constant temperature chamber 14 , and is at least partially accommodated in the limiting chamber 15 . The limiting device 2 moves back and forth along the length direction of the first side plate 121 .

[0031] Furthermore, the limiting device 2 includes a threaded rod 21 and a limiting block 22. The limiting block 22 is disposed within the tooling frame 1 and is connected to the end of the threaded rod 21 facing the constant temperature chamber 14. The limiting block 22 has an internal thread that engages with the threaded rod 21 and reciprocates along the direction of the threaded rod 21.

[0032] The threaded rod 21 and the limit block 22 are threadedly engaged to move the limit block 22 within the tooling frame 1 , thereby controlling the limit block 22 to abut against the thermocouple sensor 100 , thereby controlling the length of the thermocouple sensor 100 extending into the constant temperature chamber 14 .

[0033] See also Figure 2 The side panel 12 further includes a second side panel 122 , and a positioning hole 1221 is provided on the side panel 12 .

[0034] Furthermore, a set of positioning blocks 3 are disposed within the positioning holes 1221, positioned opposite the limiting blocks 22. The positioning blocks 3 are removably mounted within the positioning holes 1221, allowing for replacement of positioning blocks 3 of varying sizes to accommodate different thermocouple sensors 100. This restricts vertical movement of the thermocouple sensor 100 during weld detection, while also preventing the thermocouple sensor 100 from slipping from the detection fixture and potentially damaging it.

[0035] See also Figures 1 to 3 A tool 10000 for detecting the welding point position of a thermocouple sensor also includes a temperature control device 4.

[0036] Furthermore, the temperature control device 4 includes a heating assembly 41 and a heating pipe 42. The heating assembly 41 is housed within the temperature-controlled chamber 16 and fixedly mounted on the base plate 11. The ends of the heating pipe 42 are connected to the constant temperature chamber 14 and the heating assembly 41, respectively, establishing communication between the constant temperature chamber 14 and the heating assembly 41. The temperature control device 4 is responsible for controlling the temperature within the constant temperature chamber 14, ensuring a constant and stable temperature therein and ensuring the accuracy of the detection structure.

[0037] Please continue to see Figure 1 A detection tool 10000 for the welding point position of a thermocouple sensor is also provided with a feedback device 5 for testing the welding point position of the thermocouple sensor 100. The feedback device 5 is fixedly accommodated in the feedback chamber 17 and fixedly mounted on the base plate 11.

[0038] Furthermore, the side plate 12 also includes a third side plate 123 , which is provided with a group of jacks 1231 , through which the wires of the thermocouple sensor 100 extend into the feedback chamber 17 , and the wires of the thermocouple sensor 100 are electrically connected to the feedback device 5 .

[0039] In a preferred embodiment, the feedback device 5 is a voltmeter.

[0040] See Figure 3 The side panel 12 further includes a fourth side panel 124 , which is perpendicular to the bottom panel 11 .

[0041] Furthermore, a rotating wheel 23 is provided on the fourth side plate 124. The rotating wheel 23 is rotatably mounted on the fourth side plate 124 and connected to the threaded rod 21. By rotating the rotating wheel 23, the limit block 22 can move horizontally in the detection tooling.

[0042] Of course, in a preferred embodiment, the rotating wheel 23 can also be a driving cylinder connected to the threaded rod 21 by a belt or gear, etc. There is no restriction on this here, as long as the basic function of the detection tool 10000 of the position of the thermocouple sensor welding point is not affected in advance, the function of limiting the thermocouple sensor 100 can be realized.

[0043] It should be noted that a detection tool 10000 for the welding point position of a thermocouple sensor also includes a cover plate (not shown in the figure), which is located above the side plate 12 and parallel to the bottom plate 11, and is used to seal the detection tool 10000 for the welding point position of the thermocouple sensor.

[0044] The working principle of the tool 10000 for detecting the welding point position of a thermocouple sensor in the present invention is as follows: Before welding point detection, the length of the thermocouple sensor 100 extending into the constant temperature chamber 14 is determined based on the different welding point positions of thermocouple sensors 100 of different specifications or models. The position of the limit block 22 is determined based on the length of the thermocouple sensor 100 extending into the constant temperature chamber 14. After the position of the limit block 22 is adjusted, the positioning block 3 is replaced with a positioning block 3 that is compatible with the thermocouple sensor 100. The temperature inside the constant temperature chamber 14 is adjusted to the temperature required for detection, and one end of the wire of the thermocouple sensor 100 is connected to the feedback device 5. The thermocouple sensor 100 is slowly extended into the constant temperature area through the positioning hole 1221, ensuring that it abuts the limit block 22. At this time, the voltage displayed on the feedback device 5 is observed to see if it is within the normal voltage range. If the voltage is within a reasonable error range, the thermocouple sensor 100 is qualified; otherwise, it is unqualified.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A tool for detecting the welding point position of a thermocouple sensor, characterized in that: A tool frame (1), the tool frame (1) being composed of a bottom plate (11) and side plates (12), and a partition plate (13) being provided inside the tool frame (1); The partition (13) is vertically fixed to the bottom plate (11), and separates a constant temperature chamber (14), a limit chamber (15), a temperature control chamber (16) and a feedback chamber (17) within the tooling frame (1); The thermocouple sensor (100) is at least partially accommodated in the constant temperature chamber (14) and is connected to the feedback chamber (17) via a wire to form a test loop.

2. The tool for detecting the welding point position of a thermocouple sensor according to claim 1, characterized in that: A limiting device (2) is provided in the limiting chamber (15), and the side plate (12) includes a first side plate (121); the limiting device (2) passes through the partition (13) and extends into the constant temperature chamber (14), and moves back and forth in the constant temperature chamber (14) along the length direction of the first side plate (121).

3. The tool for detecting the welding point position of a thermocouple sensor according to claim 2, characterized in that: The limiting device (2) comprises a threaded rod (21) and a limiting block (22), which are threadedly matched with each other, and the limiting block (22) is arranged at one end of the threaded rod (21) close to the constant temperature chamber (14).

4. The tool for detecting the welding point position of a thermocouple sensor according to claim 3, characterized in that: The side plate (12) further comprises a second side plate (122), and a positioning hole (1221) is provided on the second side plate (122); a group of positioning blocks (3) are provided in the positioning hole (1221), and the positioning blocks (3) are detachably installed in the positioning hole (1221), and the positioning blocks (3) are arranged opposite to the limit blocks (22).

5. The tool for detecting the welding point position of a thermocouple sensor according to claim 1, characterized in that: A temperature control device (4) is provided in the temperature control chamber (16), and the temperature control device (4) comprises a heating component (41) and a heating pipe (42). The heating component (41) is fixedly mounted on the bottom plate (11) and accommodated in the temperature control chamber (16); the two ends of the heating pipe (42) are respectively connected to the constant temperature chamber (14) and the heating component (41).

6. The tool for detecting the welding point position of a thermocouple sensor according to claim 1, characterized in that: A feedback device (5) for testing the qualified rate of the welding point position of the thermocouple sensor (100) is provided in the feedback chamber (17).

7. The tool for detecting the welding point position of a thermocouple sensor according to claim 6, characterized in that: A group of jacks (1231) are provided on the third side plate (123), and the jacks (1231) pass through the third side plate (123), so that the wires of the thermocouple sensor (100) can extend into the feedback chamber (17) and be electrically connected to the feedback device (5).

8. The tool for detecting the welding point position of a thermocouple sensor according to claim 3, characterized in that: The side plate (12) further includes a fourth side plate (124), and the limiting device (2) includes a rotating wheel (23). The rotating wheel (23) is rotatably mounted on the fourth side plate (124) and connected to the threaded rod (21) to adjust the position of the limiting block (22).

9. The tool for detecting the welding point position of a thermocouple sensor according to claim 1, characterized in that: It also includes a cover plate, which is located above the side plate (12) and is used to seal the tooling frame (1).

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