An adjustable thermocouple inductor

Abstract

This application relates to the technical field of sensors, and in particular to an adjustable thermocouple sensor, including leads, an inner core connector, and a probe. The inner core connector is electrically connected to the sensing end of the probe via the leads. The probe is sequentially fitted with a locking sleeve, a clamping sleeve, and a fixing sleeve. The locking sleeve and the fixing sleeve are threadedly connected, and the locking sleeve fixes the clamping sleeve to the probe by pressing the clamping sleeve. This application has the effect of improving the accuracy of detection data.

Description

Technical Field

[0001] This application relates to the field of sensor technology, and in particular to an adjustable thermocouple sensor. Background Technology

[0002] Temperature sensors play an important role in industrial production and scientific research. Their core function is to convert temperature changes into measurable electrical or digital signals. With the improvement of industrial automation, higher requirements are placed on the accuracy, stability and installation adaptability of temperature sensors.

[0003] Currently, most mainstream temperature sensors on the market adopt a fixed probe design, which generally includes an inner core connector, leads, and a probe. The inner core connector is electrically connected to the sensing end of the probe via the leads. The sensing end of the probe is equipped with a sensing element for detecting temperature. The probe is inserted into the inner cavity of the device under test through an opening. The sensing element at the sensing end of the probe senses the temperature in the device under test and transmits the sensed temperature to the inner core connector via the leads. Then, it is transmitted to the external measuring device through the inner core connector. The device calculates the temperature value by measuring the voltage difference. The structure is simple, but it has obvious limitations in practical applications. Fixed probes often cannot accurately extend into the target measurement area due to insufficient length, resulting in inaccurate or unobtainable temperature measurement data. Utility Model Content

[0004] To improve the accuracy of detection data, this application provides an adjustable thermocouple sensor.

[0005] This application provides an adjustable thermocouple sensor, which adopts the following technical solution:

[0006] An adjustable thermocouple sensor includes a lead wire, an inner core connector, and a probe. The inner core connector is electrically connected to the sensing end of the probe via the lead wire. The probe is sequentially fitted with a locking sleeve, a clamping sleeve, and a fixing sleeve. The locking sleeve and the fixing sleeve are threadedly connected. The locking sleeve fixes the clamping sleeve to the probe by pressing the clamping sleeve.

[0007] By adopting the above technical solution, during use, the locking sleeve, clamping sleeve, and fixing sleeve are sequentially placed on the probe. The predicted length of the probe insertion into the device under test is then determined. The end of the fixing sleeve furthest from the locking sleeve is slid to a position far from the sensing end at the predicted length. The fixing sleeve and the probe are then gripped firmly to fix their positions. The locking sleeve is rotated to connect with the threaded connection of the locking sleeve to the fixing sleeve. As the locking sleeve continues to rotate, it compresses the clamping sleeve, thereby fixing the clamping sleeve to the probe. This allows for the adjustment and fixation of the probe length, enabling the probe to adapt to measurement needs at different depths while improving measurement accuracy and flexibility.

[0008] Optionally, a mounting groove is provided on the side of one end of the locking sleeve, the groove wall of the mounting groove is provided with a first internal thread, the clamping sleeve is provided in the mounting groove, and the outer wall of the fixing sleeve is provided with a first external thread that matches the first internal thread.

[0009] By adopting the above technical solution, an installation groove is opened on one side of the locking sleeve, and the groove wall is provided with a first internal thread. The locking sleeve is placed in the installation groove and cooperates with the first external thread on the outer wall of the fixing sleeve, making the installation of the locking sleeve more stable. When the locking sleeve and the fixing sleeve are connected by threads, they can be better squeezed, thus more effectively fixing to the probe. This ensures the fixing effect after the probe length is adjusted, which is conducive to adapting to the measurement needs of different depths.

[0010] Optionally, the fixing sleeve includes a connecting part, a limiting part, and a fixing part. The connecting part is connected to the limiting part, the limiting part is connected to the fixing part, the connecting part is threadedly connected to the locking sleeve, the limiting part abuts against the locking sleeve, and the fixing part is detachably connected to the device under test.

[0011] By adopting the above technical solution, the limiting part abuts against the locking sleeve, which can limit the installation position of the fixing sleeve and ensure the accuracy and stability of the connection of each component; the fixing part is detachably connected to the device under test, realizing convenient installation and removal of the sensor on the device under test, which facilitates later maintenance and replacement, and improves the practicality and applicability of the entire adjustable thermocouple sensor.

[0012] Optionally, the clamping sleeve includes a connecting ring and a clamping ring. The connecting ring is connected to the clamping ring, and the clamping elements are symmetrically arranged at both ends of the connecting ring. The end of the clamping ring away from the connecting ring is inclined towards the center of the clamping ring. The clamping ring abuts against the outer wall of the probe, and the outer walls of the two clamping rings abut against the locking sleeve and the fixing sleeve, respectively.

[0013] By adopting the above technical solution, when the probe position needs to be adjusted, the locking sleeve can be loosened first. At this time, the clamping sleeve is no longer squeezed, and the probe can be moved freely to adjust the length. After adjusting to the appropriate position, the locking sleeve is rotated to connect with the threaded connection of the fixing sleeve and squeeze the clamping sleeve. Due to the special inclined structure of the clamping ring, it can fit more tightly with the outer wall of the probe, thereby firmly fixing the clamping sleeve to the probe, realizing the adjustment and fixation of the probe length, improving the stability of the probe position after installation, enhancing the accuracy and flexibility of measurement, and better adapting to the measurement needs of different depths.

[0014] Optionally, the end of the retaining sleeve furthest from the locking sleeve is threaded to the device under test.

[0015] By adopting the above technical solution, the sensor can be installed more conveniently and securely on the device under test.

[0016] Optionally, the lead wire is wrapped with a braided sleeve, one end of which is connected to a fastener. The fastener is wrapped around the end of the lead wire near the probe, the lead wire passes through the fastener, and the end of the fastener away from the braided sleeve is fixedly connected to the probe.

[0017] By adopting the above technical solution, the lead wire can be protected by wrapping it with a braided sleeve. At the same time, the braided sleeve and the probe are connected by a fastener, which enhances the stability of the connection between the lead wire and the probe and reduces the interference caused by lead wire shaking to the measurement.

[0018] Optionally, the fastener is bent.

[0019] By adopting the above technical solution, the bent shape of the fastener can better adapt to different installation spaces and environments, reduce the impact of space limitations on installation and use, and at the same time, the bent design can also increase the flexibility and deformation resistance of the fastener, improve its fixing effect on the lead wire and probe, and ensure the stability of temperature signal transmission from the probe to the inner core connector via the lead wire.

[0020] Optionally, the fastener has a recess.

[0021] By adopting the above technical solution, the recess on the fixing component can further enhance the stability of the fixing component for the connection between the lead wire and the probe, reduce the possibility of the connection between the lead wire and the probe becoming loose or detached due to external force pulling, and ensure the normal use of the thermocouple sensor.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. In use, place the locking sleeve, clamping sleeve, and fixing sleeve onto the probe in sequence. Predict the length of the probe to be inserted into the device under test. Slide the end of the fixing sleeve away from the locking sleeve to the predicted length away from the sensing end. Hold the fixing sleeve and the probe firmly to fix their positions. Rotate the locking sleeve to connect it to the threaded connection of the fixing sleeve. As you continue to rotate the locking sleeve, it will squeeze the clamping sleeve, thus fixing the clamping sleeve to the probe. This allows for adjustment and fixation of the probe length, enabling the probe to adapt to measurement needs at different depths, while improving measurement accuracy and flexibility.

[0024] 2. An installation groove is opened on one side of the locking sleeve, and the groove wall is provided with the first internal thread. The locking sleeve is placed in the installation groove and cooperates with the first external thread on the outer wall of the fixing sleeve, so that the installation of the locking sleeve is more stable. When the locking sleeve and the fixing sleeve are connected by threads, they can be squeezed better, thus fixing them to the probe more effectively. This ensures the fixing effect after the probe length is adjusted, which is conducive to adapting to the measurement needs of different depths.

[0025] 3. Wrapping the lead wire with a braided sleeve can protect the lead wire, and at the same time, using a fastener to connect the braided sleeve and the probe can enhance the stability of the connection between the lead wire and the probe, and reduce the interference caused by lead wire shaking to the measurement. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the overall structure installation in the embodiments of this application.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Lead wire; 2. Inner core connector; 3. Probe; 4. Device under test; 5. Locking sleeve; 51. Knob ring; 6. Clamping sleeve; 61. Connecting ring; 62. Clamping ring; 7. Fixing sleeve; 71. Connecting part; 711. First external thread; 72. Limiting part; 73. Fixing part; 731. Second external thread; 8. Braided sleeve; 9. Fixing component; 91. Recess. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses an adjustable thermocouple sensor.

[0033] Reference Figure 1 and Figure 2 An adjustable thermocouple sensor includes a lead wire 1, an inner core connector 2, and a probe 3. The inner core connector 2 is electrically connected to the sensing end of the probe 3 via the lead wire 1. Specifically, there are two lead wires 1, and the two lead wires 1 are made of different metals. One end of each of the two lead wires 1 is connected to the two inner core connectors 2 respectively. The sensing element inside the probe 3 is the junction point where the ends of the two lead wires 1 away from the inner core connectors 2 are connected to each other. In this example, one lead wire 1 is made of iron, and the other lead wire 1 is made of copper. When the temperature of the device under test 4 is detected, the probe 3 is inserted into the inner cavity of the device under test 4. The sensing element inside the probe 3 detects the temperature change and generates a small voltage, which is transmitted to the inner core connector 2 through the lead wire 1. The probe 3 is sequentially fitted with a locking sleeve 5, a clamping sleeve 6, and a fixing sleeve 7. The locking sleeve 5 is located at the end of the probe 3 away from the sensing element. The locking sleeve 5 is threadedly connected to the fixing sleeve 7. The locking sleeve 5 fixes the clamping sleeve 6 to the probe 3 by pressing the clamping sleeve 6.

[0034] When temperature measurement is required, first, slip the locking sleeve 5 onto the sensing element end of the probe 3, then slip the clamping sleeve 6 onto the sensing element end of the probe 3, and finally slip the fixing sleeve 7 onto the sensing element end of the probe 3. Predict the detection length of the probe 3, slide the fixing sleeve 7 to the predicted length, hold the probe 3 and the fixing sleeve 7 to initially fix their positions, ensuring that the fixing sleeve 7 and the probe 3 are in a fixed position. Rotate the locking sleeve 5 to allow the locking sleeve 5 and the fixing sleeve 7 to engage with each other and press the clamping sleeve 6, ultimately fixing the probe 3 with the clamping sleeve 6. This allows the length of the probe 3 to be adjusted according to measurement requirements and to be stably fixed after adjustment, effectively solving the problem that the length and position of the existing fixed probe 3 cannot be adjusted, and improving the flexibility and accuracy of measurement.

[0035] Reference Figure 1 and Figure 3 The locking sleeve 5 has a mounting groove on one side, and the groove wall has a first internal thread. The clamping sleeve 6 is located in the mounting groove. The outer wall of the fixing sleeve 7 has a first external thread 711 that matches the first internal thread. The pitch and tooth profile of the first external thread 711 are adapted to the first internal thread of the locking sleeve 5 to achieve a smooth threaded connection. The mounting groove is designed to accommodate the clamping sleeve 6. The first internal thread is used to mate with the first external thread 711 of the fixing sleeve 7. The clamping sleeve 6 is located in the mounting groove and fits tightly with the locking sleeve 5 and the fixing sleeve 7. When the locking sleeve 5 rotates, it can effectively transmit pressure to the clamping sleeve 6.

[0036] Once the length of probe 3 inserted into the device under test 4 is determined, clamping sleeve 6 is placed into the mounting groove of locking sleeve 5, and then fixing sleeve 7 is connected to locking sleeve 5 by threads. When locking sleeve 5 is rotated, force is transmitted to clamping sleeve 6 through locking sleeve 5, making the connection between components tight. Rotating locking sleeve 5 can precisely control the pressure on clamping sleeve 6, thereby achieving reliable fixation of probe 3.

[0037] The fixing sleeve 7 includes a connecting part 71, a limiting part 72, and a fixing part 73. One end of the connecting part 71 is fixedly connected to one end of the limiting part 72, and the end of the limiting part 72 away from the connecting part 71 is fixedly connected to the fixing part 73. To improve connection stability, the connecting part 71, the limiting part 72, and the fixing part 73 are integrally formed. The first external thread 711 is provided on the outer wall of the connecting part 71. The connecting part 71 is used to thread-connect with the locking sleeve 5, so that the connecting part 71 and the locking sleeve 5 fit tightly. The end of the limiting part 72 near the connecting part 71 abuts against the side of the locking sleeve 5 near the connecting part 71. The setting of the limiting part 72 reduces the possibility of structural damage to the locking sleeve 5 due to excessive screwing. The fixing part 73 is detachably connected to the device under test 4, which facilitates the installation and removal of the sensor.

[0038] Furthermore, to facilitate the rotation of the locking sleeve 5, a knob ring 51 is fixedly connected to the outer wall of the locking sleeve 5. The axial cross-section of the knob ring 51 is polygonal. In this example, the axial cross-section of the knob ring 51 is hexagonal. Similarly, to facilitate the rotation of the fixing sleeve 7, the axial cross-section of the limiting part 72 is polygonal. In this example, the axial cross-section of the limiting part 72 is hexagonal.

[0039] The clamping sleeve 6 includes a connecting ring 61 and a clamping ring 62. The connecting ring 61 and the clamping ring 62 are fixedly connected and integrally formed. The clamping parts are symmetrically arranged at both ends of the connecting ring 61. The end of the clamping ring 62 away from the connecting ring 61 is inclined towards the center of the clamping ring 62. The outer walls of the two clamping rings are respectively pressed against the locking sleeve 5 and the fixing sleeve 7, so that the clamping ring 62 can better hold the probe 3 when squeezed by both the locking sleeve 5 and the connecting part 71, so that the clamping ring 62 is tightly pressed against the outer wall of the probe 3. The clamping sleeve 6 is usually made of elastic metal material, such as spring steel, to ensure that it has good elasticity and compression fixing effect.

[0040] When the fixed sleeve 7 is locked in the axial direction of the probe 3, the clamping sleeve 6 is put on the probe 3. Then, when the locking sleeve 5 and the connecting part 71 squeeze the clamping sleeve 6, the clamping ring 62 is compressed and contracts towards the center of the probe 3, thus clamping the probe 3.

[0041] The end of the fixing part 73 away from the locking sleeve 5 is threaded to the device under test 4. Specifically, the end of the fixing part 73 away from the locking sleeve 5 is provided with a second external thread 731. The device under test 4 is provided with an opening, and the wall of the opening is provided with a second internal thread. The second external thread 731 is threadedly matched with the second internal thread. The end of the fixing part 73 away from the locking sleeve 5 is inserted into the opening, so that the second external thread 731 is threadedly connected with the second internal thread, making installation and disassembly more convenient and the connection more secure.

[0042] The fixing part is cylindrical, which reduces the possibility of structural damage to the fixing part 73 due to excessive screwing or incorrect length of probe 3 inserted into the device under test 4. The outer wall of the second external thread 731 is wound in a ring shape, and the outer diameter of the ring of the second external thread 731 is smaller than the outer diameter of the fixing part 73, so that the second external thread 731 is concave in the fixing part 73. When the second external thread 731 is screwed into the second internal thread, the outer wall of the device under test 4 abuts against the side of the fixing part 73 near the second external thread 731.

[0043] The two leads 1 are wrapped with a braided sleeve 8. The braided sleeve 8 is generally made of fiber material and has a certain degree of flexibility and wear resistance. It can protect the leads 1 from the influence of the external environment. One end of the braided sleeve 8 is fixedly connected to a fixing member 9. The fixing member 9 is wrapped around the end of the lead 1 near the probe 3. The lead 1 passes through the fixing member 9. The inside of the fixing member 9 is hollow so that the lead 1 can pass through. The end of the fixing member 9 away from the braided sleeve 8 is fixedly connected to the probe 3.

[0044] Furthermore, the fixing member 9 is bent, specifically, the fixing member 9 is obtuse-angled on both sides, which reduces excessive bending of the lead wire 1 near the probe 3 and protects the wires inside the lead wire 1.

[0045] Furthermore, the fixing member 9 is provided with a recess 91, which can increase the contact area between the fixing member 9 and the probe 3 and improve the stability of the fixing.

[0046] The implementation principle of an adjustable thermocouple sensor according to an embodiment of this application is as follows: When temperature measurement is required, firstly, the locking sleeve 5 is inserted into the probe 3 from one end of the sensing element, with the mounting groove facing the sensing end of the probe 3. Then, the clamping sleeve 6 is inserted into the probe 3 from one end of the sensing element, allowing the clamping sleeve 6 to insert into the mounting groove. Finally, the fixing sleeve 7 is inserted into the probe 3 from one end of the sensing element, with the connecting part 71 positioned between the locking sleeve 5 and the fixing part 73. Predicting the detection length of the probe 3, the fixing sleeve 7 is slid to the predicted length. By holding the outer wall of the probe 3 and the limiting part 72, the position of the probe 3 and the fixing sleeve 7 is initially fixed, so that the fixing sleeve 7 and the probe 3 are in a fixed position. At this time, the locking sleeve 5 is rotated, and the locking sleeve 5 and the connecting part 71 are threaded together and squeezed and clamped sleeve 6. The clamping sleeve 6 clamps the probe 3, realizing the adjustment and fixation of the length of the probe 3. Thus, the length of the probe 3 can be adjusted according to the measurement requirements, and it can be stably fixed after adjustment. This effectively solves the problem that the length and position of the existing fixed probe 3 cannot be adjusted, and improves the flexibility and accuracy of measurement.

[0047] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable thermocouple probe comprising a lead wire (1), an inner core joint (2) and a probe head (3), the inner core joint (2) being electrically connected to the sensing end of the probe head (3) by the lead wire (1), characterised in that, The probe (3) is fitted with a locking sleeve (5), a clamping sleeve (6) and a fixing sleeve (7) in sequence. The locking sleeve (5) and the fixing sleeve (7) are threaded together. The locking sleeve fixes the clamping sleeve (6) to the probe (3) by squeezing the clamping sleeve (6).

2. An adjustable thermocouple inductor as defined in claim 1, wherein, The side of one end of the locking sleeve (5) is provided with an installation groove, the groove wall of the installation groove is provided with a first internal thread, the clamping sleeve (6) is provided in the installation groove, and the outer wall of the fixing sleeve (7) is provided with a first external thread (711) that matches the first internal thread.

3. An adjustable thermocouple sensor according to claim 1, characterized in that, The fixing sleeve (7) includes a connecting part (71), a limiting part (72) and a fixing part (73). The connecting part (71) is connected to the limiting part (72), the limiting part (72) is connected to the fixing part (73), the connecting part (71) is threadedly connected to the locking sleeve (5), the limiting part (72) abuts against the locking sleeve (5), and the fixing part (73) is detachably connected to the device under test (4).

4. An adjustable thermocouple sensor according to claim 1, characterized in that, The clamping sleeve (6) includes a connecting ring (61) and a clamping ring (62). The connecting ring (61) is connected to the clamping ring (62). The clamping parts are symmetrically arranged at both ends of the connecting ring (61). The end of the clamping ring (62) away from the connecting ring (61) is inclined towards the center of the clamping ring (62). The clamping ring (62) abuts against the outer wall of the probe (3). The outer walls of the two clamping rings abut against the locking sleeve (5) and the fixing sleeve (7) respectively.

5. An adjustable thermocouple sensor according to claim 1, characterized in that, The end of the fixing sleeve (7) away from the locking sleeve (5) is threaded to the device under test (4).

6. An adjustable thermocouple sensor according to claim 1, characterized in that, The lead wire (1) is wrapped with a braided sleeve (8). One end of the braided sleeve (8) is connected to a fixing member (9). The fixing member (9) is wrapped around the end of the lead wire (1) near the probe (3). The lead wire (1) passes through the fixing member (9). The end of the fixing member (9) away from the braided sleeve (8) is fixedly connected to the probe (3).

7. An adjustable thermocouple sensor according to claim 6, characterized in that, The fastener (9) is bent.

8. An adjustable thermocouple sensor according to claim 7, characterized in that, The fastener (9) has a recess (91).

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