Anti-separation temperature sensor

Abstract

The utility model relates to the technical field of temperature sensors, in particular to an anti-separation temperature sensor, which comprises a junction box, a vertical thermocouple sleeve fixedly connected to the middle of the bottom end of the junction box, a flange movably mounted outside the thermocouple sleeve, and a mounting sleeve fixedly connected to the upper end of the flange. An anti-falling mechanism is arranged between the mounting sleeve and the thermowell; a box cover is in threaded connection with the top end of the junction box, a transverse cable sealing pipe is integrally formed on the right side of the junction box, and a sealing head is in threaded connection with the right side of the cable sealing pipe. According to the utility model, through the rigid meshing cooperation of the triangular clamping head and the clamping groove and the elastic reset effect of the second spring, the reliable anti-falling effect in a high-frequency vibration environment is realized, and the problem of loosening or falling of the sensor caused by continuous mechanical vibration in the prior art is effectively solved.

Description

Technical Field

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

[0002] A temperature sensor is a sensor that can sense temperature and convert it into a usable output signal. Temperature sensors are the core component of temperature measuring instruments. There are many types of temperature sensors, which can be divided into two main categories according to the measurement method: contact type and non-contact type. According to the characteristics of sensor materials and electronic components, they can be divided into two categories: resistance temperature detectors (RTDs) and thermocouples.

[0003] A thermocouple temperature sensor, as disclosed in authorization announcement number CN218628683U, includes a sensor body. A transmission rod is fixedly installed at the bottom of the sensor body. Clamping frames are snapped onto both the front and rear sides of the lower end of the sensor body surface. Movable grooves are formed on the outer surface of the clamping frames. First support springs are fixedly installed at both ends of the inner cavity of the movable grooves. Clamping plates are fixedly installed at the outer ends of the first support springs. The beneficial effects of this utility model are: by adding a fixing and clamping structure to the surface of the sensor, the sensor as a whole can be installed and fixed, making it more secure after installation and preventing shaking during use. Furthermore, the position of the clamping structure on the sensor surface is adjustable, allowing adjustment of the position of the clamping structure according to usage requirements to improve installation stability.

[0004] Although the aforementioned patent can securely install the sensor as a whole, making it more stable after installation and preventing it from shaking during use, if the installation environment has high-frequency vibrations, such as industrial equipment, engines, pumps, etc., the continuous mechanical force may cause the snap-fit ​​frame and clamping plate to loosen or fall off. Utility Model Content

[0005] The purpose of this invention is to provide a temperature sensor that prevents detachment, 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] A temperature sensor designed to prevent detachment, comprising

[0008] The junction box has a vertical thermocouple sheath fixedly connected to the middle of its bottom end. A flange is movably installed on the outside of the thermocouple sheath. An installation sleeve is fixedly connected to the upper end of the flange. An anti-detachment mechanism is provided between the installation sleeve and the thermocouple sheath.

[0009] A cover is threaded to the top of the junction box, and a transverse cable sealing tube is integrally formed on the right side of the junction box. A sealing head is threaded to the right side of the cable sealing tube.

[0010] Preferably, the anti-detachment mechanism includes a rectangular sleeve fixedly connected to the outer wall of the thermocouple sheath, and slots symmetrically opened on both sides of the inner wall of the rectangular sleeve. Telescopic grooves are opened inward on both sides of the outer wall of the rectangular sleeve, and triangular clips are elastically connected inside the telescopic grooves by springs.

[0011] Preferably, the anti-detachment mechanism further includes transverse grooves symmetrically opened inside both sides of the mounting sleeve, and pressure rods movably sleeved inside the transverse grooves;

[0012] Preferably, the end of the pressure rod near the triangular clip head is round;

[0013] Preferably, an annular guide groove is provided in the middle of the transverse groove, a retaining ring is fixedly connected to the middle of the pressure rod, and a spring is elastically connected between the retaining ring and the annular guide groove.

[0014] Preferably, a limit ring is fixedly connected to the outer side of the top end of the rectangular sleeve.

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

[0016] 1. This anti-detachment temperature sensor achieves a reliable anti-detachment effect under high-frequency vibration environment through the rigid engagement of the triangular clasp and the clasp slot, as well as the elastic reset effect of the spring, effectively solving the problem of sensor loosening or falling off caused by continuous mechanical vibration in the prior art.

[0017] 2. This anti-detachment temperature sensor provides a convenient unlocking mechanism through the linkage of the pressure rod, the retaining ring and the spring. It ensures anti-detachment performance while realizing quick disassembly, solving the technical problem of difficult disassembly of traditional fixed sensors. 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 diagram of the rectangular sleeve installation 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 sheath; 3. Flange; 4. Mounting sleeve; 5. Box cover; 6. Cable sealing tube; 7. Sealing head; 8. Rectangular sleeve; 9. Slot; 10. Expansion groove; 11. Spring 2; 12. Triangular clamp; 13. Horizontal groove; 14. Pressure rod; 15. Annular guide groove; 16. Retaining ring; 17. Spring 1; 18. Limiting block. 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] A temperature sensor designed to prevent detachment includes a junction box 1, to which a vertical thermocouple sheath 2 is fixedly connected at the bottom center. A flange 3 is movably mounted on the outside of the thermocouple sheath 2, and a mounting sleeve 4 is fixedly connected to the upper end of the flange 3. An anti-detachment mechanism is provided between the mounting sleeve 4 and the thermocouple sheath 2. The anti-detachment mechanism includes a rectangular sleeve 8 fixedly connected to the outer wall of the thermocouple sheath 2, and slots 9 symmetrically opened on both sides of the inner wall of the rectangular sleeve 8. A limit stop 18 is fixedly connected to the outer top of the rectangular sleeve 8. Telescopic grooves 10 are opened inward on both sides of the outer wall of the rectangular sleeve 8. The interior of the telescopic grooves 10 is ferroelectric. Spring 11 is elastically connected to a triangular clip 12. The anti-detachment mechanism also includes transverse grooves 13 symmetrically opened inside both sides of the mounting sleeve 4, and a pressure rod 14 movably sleeved inside the transverse groove 13. The end of the pressure rod 14 near the triangular clip 12 is round. An annular guide groove 15 is opened in the middle of the transverse groove 13. A retaining ring 16 is fixedly connected in the middle of the pressure rod 14. Spring 17 is elastically connected between the retaining ring 16 and the annular guide groove 15. A cover 5 is threadedly connected to the top of the junction box 1. A transverse cable sealing tube 6 is integrally formed on the right side of the junction box 1. A sealing head 7 is threadedly connected to the right side of the cable sealing tube 6.

[0026] In this embodiment, the rigid engagement between the triangular clasp 12 and the clasp 9, and the elastic reset effect of the spring 11, achieve a reliable anti-dislodgement effect under high-frequency vibration environment, effectively solving the problem of sensor loosening or falling off caused by continuous mechanical vibration in the prior art.

[0027] Furthermore, through the linkage of the pressure rod 14, the retaining ring 16 and the spring 17, a convenient unlocking mechanism is provided, which ensures the anti-detachment performance while realizing the quick disassembly function, thus solving the technical problem of difficult disassembly of traditional fixed sensors.

[0028] Working principle: First, the flange 3 is fixed to the mounting hole of the device under test with bolts. Then, the thermocouple sheath 2 is vertically inserted from the top of the mounting sleeve 4. As the thermocouple sheath 2 moves downward, the rectangular sleeve 8 on its outer wall gradually enters the interior of the mounting sleeve 4. The triangular clamps 12 on both sides of the rectangular sleeve 8 first contact the inner wall of the mounting sleeve 4, and under the action of the inclined plane, the compression spring 11 retracts into the expansion groove 10. When the thermocouple sheath 2 continues to move downward to the set position, the triangular clamps 12 are aligned with the groove 9 on the inner wall of the mounting sleeve 4. The spring 11 immediately rebounds and pushes the triangular clamps 12 into the groove 9, forming a mechanical interlock. At this time, if the thermocouple sheath 2 is subjected to abnormal vibration or tension and attempts to dislodge, the right-angled surface of the triangular clamps 12 inserted into the groove 9 will form a rigid block with the side wall of the groove 9. At the same time, the limiting block 18 at the top of the rectangular sleeve 8 further restricts axial displacement by cooperating with the inner wall of the mounting sleeve 4. When disassembly is required, a special tool is needed to push the pressure rod 14. The round end of the pressure rod 14 will press the inclined surface of the triangular clasp 12, forcing the triangular clasp 12 to overcome the elastic force of the spring 11 and completely disengage from the slot 9 and retract into the telescopic groove 10. At this time, the thermocouple sheath 2 can be pulled out from the mounting sleeve 4.

[0029] It should be noted that a temperature sensing component is installed inside the thermocouple sheath 2, which includes a thermocouple sensing element and a signal transmission wire. The thermocouple sensing element is fixedly installed inside the thermocouple sheath 2, and the signal transmission wire is led out from the thermocouple sensing element and extends into the junction box 1. When the thermocouple sheath 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 cable sealing tube 6.

[0030] 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 with anti-disengagement, characterized by: Comprising The junction box (1) is fixedly connected with vertical thermocouple sleeve (2) in the middle of the bottom end, the outer part of the thermocouple sleeve (2) is movably installed with flange (3), the upper end of the flange (3) is fixedly connected with mounting sleeve (4), and the mounting sleeve (4) and the thermocouple sleeve (2) are provided with anti-off mechanism; The top end of the junction box (1) is threadedly connected with cover (5), and the right side of the junction box (1) is integrally formed with transverse cable sealing pipe (6), and the right side of the cable sealing pipe (6) is threadedly connected with sealing head (7).

2. The anti-disengagement temperature sensor of claim 1, wherein: The anti-off mechanism comprises a rectangular sleeve (8) fixedly connected to the outer wall of the thermocouple sleeve (2), and a clamping groove (9) symmetrically formed in the inner wall of the rectangular sleeve (8), and a telescopic groove (10) is formed in the outer wall of the rectangular sleeve (8) on both sides.

3. The anti-disengagement temperature sensor of claim 2, wherein: The anti-off mechanism further comprises a horizontal groove (13) symmetrically formed in the inner wall of the mounting sleeve (4), and a pressure rod (14) movably sleeved in the horizontal groove (13).

4. The anti-disengagement temperature sensor of claim 3, wherein: The end of the pressure rod (14) close to the triangular clamping head (12) is circular.

5. The anti-disengagement temperature sensor of claim 4, wherein: An annular guide groove (15) is formed in the middle of the horizontal groove (13), a stop ring (16) is fixedly connected to the middle of the pressure rod (14), and a spring (17) is elastically connected between the stop ring (16) and the annular guide groove (15).

6. The anti-disengagement temperature sensor of claim 2, wherein: A limiting stop ring (18) is fixedly connected to the outer side of the top end of the rectangular sleeve (8).

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