Double-probe temperature sensor with rotation limiting structure

Abstract

The utility model is applicable to the technical field of measurement, and provides a double-probe temperature sensor with a rotary limiting structure, which comprises an equipment main body, the equipment main body comprises a protective tube, sleeves and sensor probes, a pair of sleeves are respectively inserted into two end parts of the protective tube, the sensor probes are provided with limiting grooves, the sleeves are provided with limiting blocks, and the limiting blocks are arranged in the limiting grooves. The outer wall of the sensor probe is provided with limiting plates; the fixing assembly is connected to the sleeve and the sensor probe; according to the utility model, a worker inserts the sensor probe into the upper end part of the sleeve and rotates the sensor probe to ensure that the limiting block is arranged in the limiting groove, and at the moment, the limiting plate on the sensor probe is arranged on the upper end surface of the sleeve; by arranging the limiting block and the limiting plate, the situation that wires in the sensor probe are damaged or connection is loosened due to the fact that the sensor probe is excessively rotated in the installation or maintenance process is avoided, and meanwhile it is ensured that the sensor probe is kept at the fixed position in the sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of measurement technology, and in particular relates to a dual-probe temperature sensor with a rotation limiting structure. Background Technology

[0002] A dual-probe temperature sensor is a temperature measurement device that contains two independent temperature sensing elements or probes. These two probes can simultaneously measure the temperature at the same or different locations, thus providing more accurate and reliable temperature data. Dual-probe temperature sensors can employ various temperature sensing technologies, such as thermocouples, resistance temperature detectors (RTDs), and thermistors, and they have wide applications in industrial automation, environmental monitoring, medical equipment, scientific research experiments, and other fields.

[0003] The dual-probe temperature sensor mainly consists of a protective tube, a sleeve, and a sensor probe. The protective tube is usually made of high-temperature and corrosion-resistant materials, mainly to protect the probe from mechanical damage, chemical corrosion, and harsh environments such as high temperatures. One end of the sleeve is connected to the protective tube, and the other end is used to insert the sensor probe, mainly to further protect the sensor probe and improve the stability and accuracy of the measurement. The sensor probe is the core part of the temperature sensor, used to directly contact the object being measured and sense temperature changes.

[0004] The sensor probe may be rotated during installation or maintenance, and excessive rotation may damage the wires inside the probe or loosen the connection. It is necessary to ensure that the sensor probe remains in a fixed position inside the sleeve to avoid affecting the measurement accuracy and stability of the sensor probe. Therefore, a dual-probe temperature sensor with a rotation limit structure is needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a dual-probe temperature sensor with a rotation limiting structure 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 dual-probe temperature sensor with a rotation limiting structure includes:

[0008] The main body of the equipment includes a protective tube, a sleeve, and a sensor probe. The upper and lower ends of the protective tube are open. A pair of sleeves and a pair of sensor probes are provided. The pair of sleeves are respectively inserted into the two ends of the protective tube. The sensor probe is inserted into the end of the sleeve away from the protective tube. The sensor probe has a pair of oppositely arranged limiting grooves on the end face of the sleeve. The inner wall of the sleeve has a pair of limiting blocks that are limited and placed in the limiting grooves. The outer wall of the sensor probe has a limiting plate, and the lower end face of the limiting plate is attached to the upper end face of the sleeve.

[0009] A fixing component is connected to the sleeve and the sensor probe.

[0010] In a further technical solution, the upper end face of the sleeve has a plurality of rotating grooves distributed circumferentially around the axis of the sleeve, and a plurality of limiting plates are provided, the plurality of limiting plates being distributed circumferentially around the axis of the sleeve, and each rotating groove being placed between two adjacent limiting plates.

[0011] In a further technical solution, the fixing component includes a rotating rod, a straight connecting post, and a semi-circular connecting post. The outer wall of the sensor probe has multiple spaced-apart snap-fit ​​grooves. Multiple rotating rods are provided, and the lower ends of the multiple rotating rods are rotatably placed in the multiple rotating grooves. The end of the rotating rod away from the rotating groove is snapped into the snap-fit ​​groove. Multiple straight connecting posts and multiple semi-circular connecting posts are provided, and the multiple straight connecting posts and multiple semi-circular connecting posts are connected end to end. The rotating rod has an insertion hole at the end away from the rotating groove, and the straight connecting post is inserted into the insertion hole.

[0012] In a further technical solution, the fixing component also includes a return spring, and a pair of return springs are provided. The pair of return springs are respectively provided at both ends of one of the straight connecting posts, and the return springs are connected to one end of the straight connecting post and one end of the semi-circular connecting post.

[0013] In a further technical solution, threaded holes are provided at both ends of the remaining straight connecting posts, and a stud is provided at the end of the semi-circular connecting post, with the stud and the threaded hole being threadedly connected.

[0014] In a further technical solution, the sleeve has evenly distributed barbs on its outer wall that fits against the protective tube, and the barbs fit against the inner wall of the protective tube.

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

[0016] This invention features a main body comprising a protective tube, a sleeve, and a sensor probe. A pair of sleeves are inserted into both ends of the protective tube, and the sensor probe is inserted into the end of the sleeve furthest from the protective tube. The sensor probe has a limiting groove, and the sleeve has a limiting block positioned within the limiting groove. A limiting plate is located on the outer wall of the sensor probe. The worker inserts the sensor probe into the upper end of the sleeve and rotates it to ensure that the limiting block on the inner wall of the sleeve is positioned within the limiting groove on the outer wall of the sensor probe. At this point, the limiting plate on the sensor probe is positioned on the upper end face of the sleeve. By using the limiting block and limiting plate, the sensor probe is prevented from being excessively rotated during installation or maintenance, which could damage the internal wires or loosen the connections. Simultaneously, the sensor probe is kept in a fixed position within the sleeve.

[0017] This invention utilizes a fixing assembly comprising rotating rods, straight connecting posts, and semi-circular connecting posts. The sensor probe has a snap-fit ​​groove. The lower ends of multiple rotating rods are rotatably positioned within multiple rotating grooves, snapping into them. Each rotating rod has an insertion hole at its end furthest from the rotating groove, and the straight connecting post is inserted into the insertion hole. The worker sequentially rotates the multiple rotating rods so that the ends furthest from the rotating grooves snap into the multiple snap-fit ​​grooves on the outer wall of the sensor probe. Then, one of the straight connecting posts is inserted into the insertion hole on one of the rotating rods, and the post is rotated so that the threaded holes at both ends of the post are threadedly connected to the studs on the two semi-circular connecting posts. Next, one of the straight connecting posts, each with a return spring at both ends, is inserted into the insertion hole on one of the rotating rods. Finally, the worker places the remaining straight connecting post between the two semi-circular connecting posts and rotates the post to connect the multiple straight connecting posts and the multiple semi-circular connecting posts end-to-end, thus fixing the multiple rotating rods and ensuring a tight connection between the sleeve and the sensor probe.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a partial exploded view of the present invention;

[0021] Figure 3 This is a partial exploded view of the protective tube and sensor probe of this utility model;

[0022] Figure 4 This is a partial exploded view of the fixing component of this utility model.

[0023] In the diagram: 1. Main body of the equipment; 11. Protective pipe; 12. Sleeve; 121. Limiting block; 122. Rotating groove; 123. Barb; 13. Sensor probe; 131. Limiting groove; 132. Limiting plate; 133. Snap-fit ​​groove; 2. Fixing assembly; 21. Rotating rod; 211. Insertion hole; 22. Straight connecting post; 221. Threaded hole; 23. Semi-circular connecting post; 231. Stud; 24. Return spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] like Figures 1 to 4 As shown, this embodiment of the present invention provides a dual-probe temperature sensor with a rotation limiting structure, comprising:

[0027] The main body of the equipment 1 includes a protective tube 11, a sleeve 12, and a sensor probe 13. The upper and lower ends of the protective tube 11 are set as openings. A pair of sleeves 12 and sensor probes 13 are provided. A pair of sleeves 12 are respectively inserted into the two ends of the protective tube 11. The sensor probe 13 is inserted into the end of the sleeve 12 away from the protective tube 11. The end face of the sensor probe 13 inserted into the sleeve 12 has a pair of oppositely arranged limiting grooves 131. The inner wall of the sleeve 12 has a pair of limiting blocks 121 that are limited and placed in the limiting grooves 131. The outer wall of the sensor probe 13 has a limiting plate 132. The lower end face of the limiting plate 132 is attached to the upper end face of the sleeve 12.

[0028] Fixing component 2 is connected to sleeve 12 and sensor probe 13;

[0029] In this embodiment, the worker inserts the sensor probe 13 into the upper end of the sleeve 12 and rotates the sensor probe 13 to ensure that the limiting block 121 on the inner wall of the sleeve 12 is placed in the limiting groove 131 on the outer wall of the sensor probe 13. At this time, the limiting plate 132 on the sensor probe 13 is placed on the upper end face of the sleeve 12. By setting the limiting block 121 and the limiting plate 132, the sensor probe 13 is prevented from being rotated excessively during installation or maintenance, which could cause damage to the wires inside the sensor probe 13 or loosening of the connection. At the same time, it ensures that the sensor probe 13 remains in a fixed position inside the sleeve 12.

[0030] Specifically, the upper end face of the sleeve 12 has a plurality of rotating grooves 122 distributed in a circle with the axis of the sleeve 12 as the center, and a plurality of limiting plates 132 are provided, the plurality of limiting plates 132 being distributed in a circle with the axis of the sleeve 12 as the center, and each rotating groove 122 being placed between two adjacent limiting plates 132.

[0031] Specifically, the fixing component 2 includes a rotating rod 21, a straight connecting post 22, and a semi-circular connecting post 23. The outer wall of the sensor probe 13 has multiple spaced-apart snap-fit ​​grooves 133. Multiple rotating rods 21 are provided, and the lower ends of the multiple rotating rods 21 are rotatably placed in multiple rotating grooves 122. The end of the rotating rod 21 away from the rotating groove 122 is snapped into the snap-fit ​​groove 133. Multiple straight connecting posts 22 and multiple semi-circular connecting posts 23 are provided, and the multiple straight connecting posts 22 and multiple semi-circular connecting posts 23 are connected end to end. The rotating rod 21 has an insertion hole 211 at the end away from the rotating groove 122, and the straight connecting post 22 is inserted into the insertion hole 211.

[0032] Specifically, the fixing component 2 also includes a return spring 24. A pair of return springs 24 are provided, and the pair of return springs 24 are respectively provided at both ends of one of the straight connecting posts 22. The return springs 24 are connected to one end of the straight connecting post 22 and one end of the semi-circular connecting post 23.

[0033] Specifically, threaded holes 221 are provided at both ends of the other straight connecting posts 22, and studs 231 are provided at the ends of the semi-circular connecting posts 23. The studs 231 and the threaded holes 221 are threadedly connected.

[0034] In this embodiment, after the sleeve 12 and the sensor probe 13 are inserted, the worker rotates multiple rotating rods 21 in sequence so that the end of the rotating rod 21 away from the rotating groove 122 is engaged in multiple engaging grooves 133 on the outer wall of the sensor probe 13; then, one of the straight connecting posts 22 is inserted into the insertion hole 211 on one of the rotating rods 21, and the straight connecting post 22 is rotated so that the threaded holes 221 at both ends of the straight connecting post 22 are threadedly connected to the studs 231 on the two semi-circular connecting posts 23; then, one of the straight connecting posts 22, which has return springs 24 at both ends, is engaged... 2. Insert it into the insertion hole 211 on one of the rotating rods 21; at this time, a pair of return springs 24 are symmetrically distributed around the insertion hole 211 on a pair of semi-circular connecting posts 23 at the end away from the straight connecting post 22; finally, the worker places the remaining straight connecting post 22 between the two semi-circular connecting posts 23, at which time the return springs 24 are compressed; rotate the straight connecting post 22 so that the multiple straight connecting posts 22 and the multiple semi-circular connecting posts 23 are connected end to end; by setting the straight connecting post 22 and the semi-circular connecting post 23, the multiple rotating rods 21 are fixed so that the sleeve 12 and the sensor probe 13 are tightly connected;

[0035] Specifically, the sleeve 12 has evenly distributed barbs 123 on its outer wall that fits against the protective tube 11, and the barbs 123 fit against the inner wall of the protective tube 11.

[0036] In this embodiment, the worker inserts the lower end of the sleeve 12 into the upper end of the protective tube 11 until the barbs 123 at the lower end of the sleeve 12 are placed on the inner wall of the protective tube 11. By setting the barbs 123, the contact area between the protective tube 11 and the sleeve 12 is increased, making the connection between the two more secure and preventing them from falling off.

[0037] The working principle of this utility model is as follows:

[0038] During installation, the worker first inserts the lower end of the sleeve 12 into the upper end of the protective tube 11 until the barb 123 at the lower end of the sleeve 12 is placed on the inner wall of the protective tube 11. By setting the barb 123, the contact area between the protective tube 11 and the sleeve 12 is increased, making the connection between the two more secure and preventing them from falling off.

[0039] Subsequently, the worker inserts the sensor probe 13 into the upper end of the sleeve 12 and rotates the sensor probe 13 to ensure that the limiting block 121 on the inner wall of the sleeve 12 is placed in the limiting groove 131 on the outer wall of the sensor probe 13. At this time, the limiting plate 132 on the sensor probe 13 is placed on the upper end face of the sleeve 12. By setting the limiting block 121 and the limiting plate 132, the sensor probe 13 is prevented from being rotated excessively during installation or maintenance, which could damage the wires inside the sensor probe 13 or cause the connection to become loose. At the same time, it ensures that the sensor probe 13 remains in a fixed position inside the sleeve 12.

[0040] After the sleeve 12 and the sensor probe 13 are connected, the worker rotates multiple rotating rods 21 in sequence so that the end of the rotating rod 21 away from the rotating groove 122 is engaged in multiple engaging grooves 133 on the outer wall of the sensor probe 13.

[0041] Then, insert one of the straight connecting posts 22 into the insertion hole 211 on one of the rotating rods 21, and rotate the straight connecting post 22 so that the threaded holes 221 at both ends of the straight connecting post 22 are threadedly connected to the studs 231 on the two semi-circular connecting posts 23.

[0042] Then, insert one of the straight connecting posts 22, which is equipped with return springs 24 at both ends, into the insertion hole 211 on one of the rotating rods 21; at this time, a pair of return springs 24 are symmetrically distributed on a pair of semi-circular connecting posts 23 at the end away from the straight connecting post 22 with the insertion hole 211 as the center.

[0043] Finally, the worker places the remaining straight connecting post 22 between the two semi-circular connecting posts 23, at which point the return spring 24 is compressed; rotate the straight connecting post 22 so that the multiple straight connecting posts 22 and the multiple semi-circular connecting posts 23 are connected end to end; by setting the straight connecting post 22 and the semi-circular connecting post 23, the multiple rotating rods 21 are fixed so that the sleeve 12 and the sensor probe 13 are tightly connected.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 dual probe temperature sensor with rotation limit structure, characterized by, The utility model provides a sensor probe fixing device, which belongs to the technical field of sensor probe fixing device. The utility model discloses a sensor probe fixing device, which comprises a device body (1), the device body (1) includes a protective tube (11), sleeve (12) and sensor probe (13), both ends of the protective tube (11) are provided with openings, the sleeve (12) and the sensor probe (13) are provided with a pair, a pair of sleeve (12) is inserted into the both ends of the protective tube (11) respectively, the sensor probe (13) is inserted into the end of the sleeve (12) away from the protective tube (11), the sensor probe (13) has a pair of opposite limiting grooves (131) on the end face of being inserted into the sleeve (12), the inner wall of sleeve (12) has a pair of opposite limiting blocks (121), the limiting blocks (121) are placed in the limiting grooves (131), the outer wall of sensor probe (13) is provided with a limiting plate (132), and the lower end face of the limiting plate (132) is attached to the upper end face of the sleeve (12). A fixing assembly (2) is connected to the sleeve (12) and the sensor probe (13).

2. The dual probe temperature sensor with rotation limiting structure according to claim 1, characterized in that: The upper end face of the sleeve (12) has a plurality of rotation grooves (122) distributed circumferentially around the axis of the sleeve (12), and the limiting plate (132) is provided with a plurality of limiting plates (132) distributed circumferentially around the axis of the sleeve (12), and each rotation groove (122) is arranged between two adjacent limiting plates (132).

3. The dual probe temperature sensor with rotation limiting structure according to claim 2, wherein: The fixing assembly (2) comprises a rotating rod (21), a straight connecting column (22) and a semicircular connecting column (23), the outer wall of the sensor probe (13) is provided with a plurality of clamping grooves (133) arranged at intervals, the rotating rod (21) is provided with a plurality of rotating rods (21), the lower end of each rotating rod (21) is rotatably arranged in a rotation groove (122), one end of the rotating rod (21) away from the rotation groove (122) is clamped in the clamping groove (133), the straight connecting column (22) and the semicircular connecting column (23) are provided with a plurality of straight connecting columns (22) and a plurality of semicircular connecting columns (23), the straight connecting column (22) and the semicircular connecting column (23) are connected end to end, and the rotating rod (21) has an insertion hole (211) at one end away from the rotation groove (122), and the straight connecting column (22) is inserted into the insertion hole (211).

4. The dual probe temperature sensor with rotation limiting structure according to claim 3, characterized in that: The fixing assembly (2) further comprises a return spring (24), the return spring (24) is provided with a pair of return springs (24), and the two ends of each straight connecting column (22) are provided with a threaded hole (221), one end of the semicircular connecting column (23) is provided with a threaded hole (221), and the threaded hole (221) and the threaded hole (221) are threadedly connected.

5. The dual probe temperature sensor with rotation limiting structure according to claim 4, wherein: The two ends of the remaining straight connecting column (22) are provided with threaded holes (221), and the end of the semicircular connecting column (23) is provided with a threaded hole (221).

6. The dual probe temperature sensor with rotation limit structure of claim 4, wherein: The sleeve (12) is provided with uniformly distributed barbs (123) on the outer wall which is in contact with the protective tube (11), and the barbs (123) are in contact with the inner wall of the protective tube (11).

Images