A temperature sensor that is easily adjustable

Abstract

The utility model relates to temperature sensor technical field, concretely is a kind of temperature sensor convenient to adjust, including junction box, its bottom end vertical fixed thermocouple detection rod, the middle part of thermocouple detection rod is movably installed with flange, height adjusting mechanism is arranged between flange and thermocouple detection rod;Support, its symmetrical fixed in the bottom end outside of junction box, and the both sides of support and flange are provided with positioning mechanism.The utility model is through the thread cooperation of the outer thread of driving sleeve and thermocouple detection rod, and the rotation limit cooperation of guide ring and annular groove, realized that thermocouple detection rod insertion depth is adjustable, solved the technical problem of insertion depth deviation when different pipe diameter is applied due to the height of flange fixed and the length of detection rod fixed in prior art, ensure that detection head can be accurately located in pipe center position.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, specifically to a temperature sensor that is easy to adjust. Background Technology

[0002] In the field of sensors, thermocouples are simple in structure, easy to use, and have high accuracy and stability, making them a widely used temperature sensor in engineering.

[0003] A waterproof thermocouple temperature sensor, as disclosed in authorization announcement number CN220794465U, includes a junction box. The junction box comprises a box body with an upper opening and a cover threaded onto the box body. The opening of the box body is angled and has a first sealing gasket. A temperature transmitter is housed inside the box, and a temperature sensing wire is electrically connected to the temperature transmitter. A thermocouple probe and a stainless steel probe are welded to the lower end of the junction box. The stainless steel probe is located at the center inside the thermocouple probe, and the lower part of the temperature sensing wire is located inside the stainless steel probe. The inner wall of the thermocouple probe has internal threads, and a primary compression sleeve is connected through these internal threads. The beneficial effect of this utility model using the above technical solution is that the first, second, and third sealing gaskets provide excellent sealing and waterproofing.

[0004] While the aforementioned patent can provide excellent sealing and waterproofing, the height of the mounting plate (flange) of the device is fixed, and the length of the thermocouple probe is also determined during manufacturing. When applied to different pipe diameters, there will inevitably be deviations in insertion depth. Small pipe diameters will cause the probe to be over-inserted beyond the center of the pipe, while large pipe diameters will cause the probe to be under-inserted and unable to reach the center position. Utility Model Content

[0005] The purpose of this invention is to provide a temperature sensor that is easy to adjust, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An easily adjustable temperature sensor, including

[0008] The junction box has a thermocouple detection rod vertically fixed at its bottom, a flange is movably installed in the middle of the thermocouple detection rod, and a height adjustment mechanism is provided between the flange and the thermocouple detection rod.

[0009] The brackets are symmetrically fixed to the bottom sides of the junction box, and positioning mechanisms are provided on both sides of the brackets and flanges.

[0010] Preferably, the height adjustment mechanism includes a guide sleeve vertically fixed to the middle of the top of the flange, and a drive sleeve movably sleeved on the outside of the guide sleeve. An external thread is provided on the upper outside of the thermocouple probe, and the drive sleeve is threadedly connected to the external thread.

[0011] Preferably, the height adjustment mechanism further includes an annular groove formed above the outer wall of the guide sleeve, and a guide ring fixedly connected to the inner wall of the bottom end of the drive sleeve, the guide ring being rotatably connected to the annular groove;

[0012] Preferably, the positioning mechanism includes a positioning rod vertically fixed to the bottom of the outer side of the bracket, and a positioning sleeve vertically fixed to the top of both sides of the flange. The positioning sleeve is movably connected to the positioning rod, and a scale is vertically provided on the surface of the positioning rod.

[0013] Preferably, the positioning mechanism further includes a sealing disc movably installed inside the positioning sleeve, and a spring disposed between the sealing disc and the bottom end of the positioning sleeve, with the two ends of the spring abutting against the lower surface of the sealing disc and the inner bottom wall of the positioning sleeve, respectively.

[0014] Preferably, a bottom sleeve is fixedly connected to the middle of the bottom end of the flange, and a graphite sealing ring is fixedly installed inside the bottom sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This easily adjustable temperature sensor achieves adjustable insertion depth of the thermocouple probe rod through the threaded engagement of the drive sleeve and the external thread of the thermocouple probe rod, as well as the rotational limiting engagement of the guide ring and the annular groove. This solves the technical problem of insertion depth deviation caused by fixed flange height and fixed probe rod length in existing technologies when applied to different pipe diameters, ensuring that the probe head can always be accurately located at the center of the pipeline.

[0017] 2. This easily adjustable temperature sensor achieves precise positioning during the adjustment process through the sliding fit of the positioning rod and the precise indication of the scale. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Junction box; 2. Thermocouple probe; 3. Flange; 4. Bracket; 5. Guide sleeve; 6. Drive sleeve; 7. External thread; 8. Annular groove; 9. Guide ring; 10. Positioning rod; 11. Positioning sleeve; 12. Scale; 13. Sealing disc; 14. Spring; 15. Bottom sleeve; 16. Graphite sealing ring. Detailed Implementation

[0023] 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.

[0024] like Figure 1-4 As shown, this utility model provides a technical solution:

[0025] An easily adjustable temperature sensor includes a junction box 1, a thermocouple probe 2 vertically fixed at its bottom end, a flange 3 movably mounted in the middle of the thermocouple probe 2, a height adjustment mechanism between the flange 3 and the thermocouple probe 2, the height adjustment mechanism including a guide sleeve 5 vertically fixed in the middle of the top of the flange 3, and a drive sleeve 6 movably sleeved on the upper part of the guide sleeve 5, an external thread 7 is provided on the upper external end of the thermocouple probe 2, the drive sleeve 6 is threadedly connected to the external thread 7, the height adjustment mechanism also includes an annular groove 8 opened on the upper part of the outer wall of the guide sleeve 5, and a guide ring 9 fixedly connected to the inner wall of the bottom end of the drive sleeve 6, the guide ring 9 is rotatably connected to the annular groove 8, a bottom sleeve 15 is fixedly connected in the middle of the bottom end of the flange 3, and a graphite sealing ring 16 is fixedly installed inside the bottom sleeve 15;

[0026] In this embodiment, the insertion depth of the thermocouple probe rod 2 is adjustable by the threaded engagement between the drive sleeve 6 and the external thread 7 of the thermocouple probe rod 2, and the rotation limit engagement between the guide ring 9 and the annular groove 8. This solves the technical problem of insertion depth deviation when applied to different pipe diameters due to the fixed flange height and fixed probe rod length in the prior art, and ensures that the probe head can always be accurately located at the center of the pipeline.

[0027] like Figure 2 and Figure 3As shown, bracket 4 is symmetrically fixed to the outside of the bottom ends of both sides of junction box 1. Positioning mechanisms are provided on both sides of bracket 4 and flange 3. The positioning mechanism includes a positioning rod 10 vertically fixed to the bottom of the outer side of bracket 4 and a positioning sleeve 11 vertically fixed to the top of both sides of flange 3. The positioning sleeve 11 is movably connected to the positioning rod 10. A scale 12 is vertically provided on the surface of the positioning rod 10. The positioning mechanism also includes a sealing plate 13 movably installed inside the positioning sleeve 11 and a spring 14 provided between the sealing plate 13 and the bottom end of the positioning sleeve 11. The two ends of the spring 14 abut against the lower surface of the sealing plate 13 and the inner bottom wall of the positioning sleeve 11, respectively.

[0028] In this embodiment, precise positioning during the adjustment process is achieved through the sliding engagement of the positioning rod 10 and the positioning sleeve 11, as well as the precise indication of the scale 12.

[0029] Working principle: First, fix flange 3 to the flange interface of the pipe to be tested with bolts. Then, insert thermocouple probe 2 vertically into the pipe from the middle of flange 3. At this time, positioning rod 10 on bracket 4 is inserted into positioning sleeve 11 on both sides of flange 3 to form a guide. Continue to press down junction box 1 until the external thread 7 at the upper end of thermocouple probe 2 is fully engaged with the internal thread of drive sleeve 6. At this time, rotate drive sleeve 6. Since drive sleeve 6 is restricted from axial movement by rotational cooperation between guide ring 9 and annular groove 8, and flange 3 is fixed on the pipe and cannot move, the rotation action forces thermocouple probe 2 to make a linear downward movement through thread engagement. The descent depth of thermocouple probe 2 can be accurately controlled by observing the scale 12 on positioning rod 10. Stop rotating when the probe end of thermocouple probe 2 reaches the ideal position in the center of the pipe.

[0030] It should be noted that the temperature sensor of this device is a WRN-130 thermocouple temperature sensor. The thermocouple probe 2 is equipped with a temperature sensing component, which includes a thermocouple sensing element and a signal transmission wire. The thermocouple sensing element is fixedly installed inside the thermocouple probe 2, and the signal transmission wire is led out from the thermocouple sensing element and extends into the junction box 1. When the thermocouple probe 2 comes into contact with the measured medium, the thermocouple sensing element transmits the detected temperature signal to the signal processing circuit in the junction box 1 through the signal transmission wire, and then outputs it to the external control system through the cable led out from the wiring conduit.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor for ease of adjustment, characterized by: Comprising The junction box (1) is vertically fixed with the thermocouple probe rod (2) at the bottom end, the middle part of the thermocouple probe rod (2) is movably installed with the flange (3), and the height adjusting mechanism is arranged between the flange (3) and the thermocouple probe rod (2). The support (4) is symmetrically fixed to the both sides of the bottom end of the junction box (1), and the positioning mechanism is arranged between the support (4) and the both sides of the flange (3).

2. A temperature sensor for ease of adjustment according to claim 1, characterized in that: The height adjusting mechanism comprises a guide sleeve (5) vertically fixed at the middle part of the top end of the flange (3), and a driving sleeve (6) movably sleeved on the outside of the guide sleeve (5), an external thread (7) is formed on the outside of the upper end of the thermocouple probe rod (2), and the driving sleeve (6) is in threaded connection with the external thread (7).

3. A temperature sensor for ease of adjustment according to claim 2, wherein: The height adjusting mechanism further comprises an annular groove (8) formed on the upper side of the outer wall of the guide sleeve (5), and a guide ring (9) fixedly connected to the inner wall of the bottom end of the driving sleeve (6), the guide ring (9) is in rotational connection with the annular groove (8).

4. The temperature sensor of claim 1, wherein: The positioning mechanism comprises a positioning rod (10) vertically fixed to the bottom end of the outer side of the support (4), and a positioning sleeve (11) vertically fixed to the top end of the both sides of the flange (3), the positioning sleeve (11) is movably sleeved with the positioning rod (10), and a scale (12) is vertically arranged on the surface of the positioning rod (10).

5. A temperature sensor for ease of adjustment according to claim 4, wherein: The positioning mechanism further comprises a sealing disc (13) movably installed in the inside of the positioning sleeve (11), and a spring (14) arranged between the sealing disc (13) and the bottom end of the positioning sleeve (11), the both ends of the spring (14) abut against the lower surface of the sealing disc (13) and the inner bottom wall of the positioning sleeve (11) respectively.

6. The temperature sensor of claim 1, wherein: The bottom sleeve (15) is fixedly connected to the middle part of the bottom end of the flange (3), and the graphite sealing ring (16) is fixedly installed in the inside of the bottom sleeve (15).

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