Real-time temperature measuring device for cable head

Abstract

The utility model belongs to the field of power distribution engineering, and particularly relates to a cable head real-time temperature measuring device, which is characterized in that a plurality of arc-shaped induction clamping plates are arranged in an annular shell in a sliding manner, a rotating rod is rotatably arranged on one side of each arc-shaped induction clamping plate, a clamping wheel is rotatably arranged at one end of each rotating rod, a rotating shaft is rotatably connected to one side of each clamping wheel, and the rotating shaft is rotatably connected to the other side of each arc-shaped induction clamping plate; a first non-return wheel is fixedly arranged on the portion, on the side wall of the rotating rod, of the outer side of the rotating shaft, a second non-return wheel is slidably arranged on the portion, on the outer side of the rotating shaft, of one side of the first non-return wheel, a second spring is arranged between the second non-return wheel and the rotating shaft, and an elastic telescopic rod is rotationally connected between the rotating rod and the annular shell; and a plurality of temperature sensors are arranged on one side of each arc-shaped induction clamping plate. According to the utility model, through the arrangement of structures such as the arc-shaped induction clamping plates, cable heads of different sizes can be annularly clamped and wrapped by the plurality of arc-shaped induction clamping plates, the monitoring accuracy of the overall temperature of the cable heads is improved, and the adaptability of the device is stronger.

Description

Technical Field

[0001] This utility model belongs to the field of power distribution engineering technology, and in particular relates to a real-time temperature measurement device for cable heads. Background Technology

[0002] As a weak link in the safe and reliable operation of ring main units, the performance and quality of cable heads depend not only on the materials used but also on the manufacturing process, on-site construction control, and the real-time load. Any of these factors can cause the cable heads inside the ring main unit to overheat. If not detected in time, the load will continue to increase, causing the cable head temperature to rise until it explodes, or even ruptures the insulating bushing inside the unit, leading to the collapse of the entire ring main unit. Therefore, accurate real-time temperature monitoring of the cable heads is essential.

[0003] For example, patent application CN202322785684.8 discloses a temperature measuring device for a ring main unit cable head, including a temperature sensor and a nut sleeve. The temperature sensor is fixedly connected to the inner surface of the nut sleeve with adhesive. A ring main unit includes a temperature measuring device for its cable head. By directly bonding the temperature sensor to the inner surface of the nut sleeve, the nut structure can be changed, and temperature measurement can be completed simply by fitting it onto the cable head nut, reducing costs and simplifying the operation. Simultaneously, with the temperature sensor in close contact with the nut surface, when there is a temperature difference within the sensor, heat energy will be conducted through the metal part of the sensor to the nut and the metal body of the ring main unit, and further dissipated through radiation, avoiding signal dead zones and preventing signals from failing to escape from the cable head.

[0004] In existing technologies, temperature sensors are attached tightly to the cable head nut to achieve real-time temperature measurement. However, there are still some shortcomings: First, existing temperature measuring devices can only measure the temperature at a certain position on the cable head and cannot perform temperature detection at multiple positions on the outer ring of the cable head. Moreover, they cannot adapt to the clamping and temperature measurement of cable heads of different diameters, resulting in certain deficiencies in overall applicability.

[0005] Moreover, after the device is installed, the commonly available cable head temperature measuring devices may become loose during long-term use, causing the measurement position to shift and making the real-time temperature measurement inaccurate. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this invention provides a real-time temperature measurement device for cable heads. Through the design of arc-shaped induction clamping plates and other structures, this invention allows cable heads of different sizes to be clamped and wrapped in a ring by multiple arc-shaped induction clamping plates, improving the overall temperature monitoring accuracy of the cable head and enhancing the device's adaptability. The design of first and second check-back wheels ensures that the cable head remains centered within the device when inserted, and prevents it from detaching from the temperature measurement device after reaching the appropriate position, thus serving to secure the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a real-time temperature measurement device for cable heads, comprising an annular housing, wherein multiple arc-shaped sensing clamping plates are slidably arranged inside the annular housing, a rotating rod is rotatably arranged on one side of each arc-shaped sensing clamping plate, a clamping wheel is rotatably arranged at one end of the rotating rod, a rotating shaft is rotatably connected to one side of the clamping wheel, a first check wheel is fixedly arranged on the side wall of the rotating rod on the outer side of the rotating shaft, a second check wheel is slidably arranged on one side of the first check wheel on the outer side of the rotating shaft, a second spring is arranged between the second check wheel and the rotating shaft, an elastic telescopic rod is rotatably connected between the rotating rod and the annular housing, and multiple temperature sensors are arranged on one side of each arc-shaped sensing clamping plate.

[0008] Optionally, each of the arc-shaped sensing clamping plates has a through hole on one side of the side wall of the annular housing, and a slide rod is slidably disposed inside each through hole. One end of each slide rod is fixedly connected to one side of its adjacent arc-shaped sensing clamping plate.

[0009] Optionally, a first spring is provided on the outer side of each slide bar on the outer circumferential surface of the annular housing.

[0010] Optionally, the end faces of the plurality of slide rods are respectively provided with engaging protrusions and engaging grooves that can cooperate with each other.

[0011] Optionally, ratchet teeth are provided on the outer circumference of the annular housing between each pair of slide rods, and a support rod is rotatably provided on one side of each slide rod, the support rod engaging with the ratchet teeth.

[0012] Optionally, each of the rotating shafts is provided with a groove, and a slider is slidably disposed inside each groove, the slider being fixedly connected to the inner sidewall of the second check wheel.

[0013] Optionally, each of the clamping wheels is provided with multiple anti-slip strips in a ring.

[0014] Optionally, each of the arc-shaped inductive clamping plates has multiple anti-slip grooves on its clamping surface.

[0015] In summary, compared with existing technologies, the beneficial effects of this solution are as follows:

[0016] (1) By setting up the arc-shaped induction clamping plate, the slide bar and the first spring, the present invention enables cable heads of different sizes to be clamped and wrapped in a ring by multiple arc-shaped induction clamping plates. This not only enables the temperature of the cable head to be monitored in real time and improves the accuracy of monitoring the overall temperature of the cable head, but also makes the device more adaptable and effectively increases the practicality of the device.

[0017] (2) By setting up the first check wheel, the second check wheel and the second spring, the present invention enables the cable head to always be kept in the center of the device under the action of the clamping wheel when the cable head is inserted into the device. After the cable head reaches the appropriate position, it can prevent the cable head from falling off the temperature measuring device, thus playing the role of fixing the device and effectively improving the stability of the device for measuring the temperature of the cable head. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is the front view of the present invention;

[0020] Figure 3 for Figure 2 A three-dimensional cross-sectional view at point AA;

[0021] Figure 4 for Figure 3 Enlarged view of a section at point B;

[0022] Figure 5 for Figure 3 A magnified view of a section at point C.

[0023] Figure 6 These are partial drawings of the components of this utility model;

[0024] Figure 7 for Figure 6 A magnified view of a section at point D.

[0025] In the figure: 10 ring-shaped housing, 11 arc-shaped induction clamping plate, 12 through hole, 13 slide rod, 14 first spring, 15 rotating rod, 16 clamping wheel, 17 anti-slip strip, 18 first check wheel, 19 second check wheel, 20 rotating shaft, 21 sliding groove, 22 slider, 23 elastic telescopic rod, 24 temperature sensor, 25 ratchet, 26 support rod, 27 snap-fit ​​protrusion, 28 snap-fit ​​groove, 29 anti-slip groove, 30 second spring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example 1:

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a real-time temperature measurement device for cable heads includes an annular housing 10. Multiple arc-shaped sensing clamping plates 11 are slidably arranged inside the annular housing 10. A rotating rod 15 is rotatably arranged on one side of each arc-shaped sensing clamping plate 11. A clamping wheel 16 is rotatably arranged at one end of the rotating rod 15. A rotating shaft 20 is rotatably connected to one side of the clamping wheel 16. A first check wheel 18 is fixedly arranged on the side wall of the rotating rod 15 on the outer side of the rotating shaft 20. A second check wheel 19 is slidably arranged on one side of the first check wheel 18 on the outer side of the rotating shaft 20. A second spring 30 is arranged between the second check wheel 19 and the rotating shaft 20. An elastic telescopic rod 23 is rotatably connected between the rotating rod 15 and the annular housing 10. Multiple temperature sensors 24 are arranged on one side of each arc-shaped sensing clamping plate 11.

[0029] Specifically, the arc-shaped induction clamping plate 11 is made of insulating heat-sensitive material, such as alumina ceramic, and the temperature sensor 24 is a high-sensitivity temperature sensor. Both are existing technologies and will not be elaborated on in this solution. The arc-shaped induction clamping plate 11 can clamp the outer ring of the cable head and conduct heat. The temperature sensor 24 can know the real-time temperature of the cable head by detecting the real-time temperature of the arc-shaped induction clamping plate 11, thereby realizing the real-time temperature detection of the cable head.

[0030] The elastic telescopic rod 23 is a common elastic telescopic rod, which is existing technology. The clamping wheel 16 is provided with an arc-shaped clamping groove. When the cable enters the device, the multiple clamping wheels 16 support the cable under the support of the elastic telescopic rod 23 on the rotating rod 15, so that the cable is always in the center position of the device, preventing the cable from colliding with the device and causing damage to the cable.

[0031] The meshing rotation between the first check wheel 18 and the second check wheel 19 allows them to rotate in only one direction, not in the opposite direction. Furthermore, when the cable head enters the device, the clamping wheel 16 rotates along with the cable. Without manual pulling to displace the second check wheel 19 relative to the first check wheel 18, the contact friction between the clamping wheel 16 and the outside of the cable creates a relative fixation between the temperature measuring device and the cable, effectively preventing relative displacement between them and thus improving the accuracy of real-time temperature detection of the cable head.

[0032] Further, such as Figure 7 As shown, each rotating shaft 20 is provided with a groove 21, and a slider 22 is slidably disposed inside each groove 21. The slider 22 is fixedly connected to the inner wall of the second check wheel 19.

[0033] Specifically, the arrangement of the slide groove 21 and the slider 22 ensures that the second check wheel 19 connected to the slider 22 can only rotate together with the rotating shaft 20 and the clamping wheel 16. Therefore, after the first check wheel 18 and the second check wheel 19 cooperate, they can only rotate relative to each other when the cable head enters the device, which can effectively prevent the cable head from falling off after being installed inside the device.

[0034] Further, such as Figure 4 As shown, each arc-shaped induction clamping plate 11 has multiple anti-slip grooves 29 on its clamping surface.

[0035] Specifically, the anti-slip groove 29 is strip-shaped, which can effectively prevent the cable head from rotating relative to the arc-shaped induction clamping plate 11 after the cable head is clamped by the arc-shaped induction clamping plate 11, and increase the friction between the arc-shaped induction clamping plate 11 and the cable head.

[0036] Further, such as Figure 1 and Figure 3 As shown, each arc-shaped sensing clamping plate 11 has a through hole 12 on one side of the side wall of the annular housing 10. A slide rod 13 is slidably disposed inside each through hole 12. One end of each slide rod 13 is fixedly connected to one side of the adjacent arc-shaped sensing clamping plate 11. A first spring 14 is disposed on the outer side of each slide rod 13 on the outer circular surface of the annular housing 10.

[0037] Specifically, the two ends of the first spring 14 are connected to the outer circular surface of the annular housing 10 and the top of the slide rod 13, respectively. Under the action of its own elastic tension, the first spring 14 forms a stretching effect on the top of the slide rod 13, thereby causing the slide rod 13 to drive the arc-shaped induction clamping plate 11 to clamp the cable head.

[0038] Further, such as Figure 1As shown, each slide bar 13 has a locking protrusion 27 and a locking groove 28 that can cooperate with each other on its end face.

[0039] Specifically, the snap-fit ​​protrusion 27 and snap-fit ​​groove 28 are made of magnetic material. The snap-fit ​​protrusion 27 and snap-fit ​​groove 28 can attract and snap together with each other. The setting of the snap-fit ​​protrusion 27 and snap-fit ​​groove 28 allows multiple temperature measuring devices to snap together and cooperate with each other. This allows multiple temperature measuring devices to be combined to form a cable management function, preventing the cables from getting tangled and causing the temperature measuring devices to collide and come into contact with each other, thereby avoiding damage to the temperature measuring devices.

[0040] Further, such as Figure 1 As shown, ratchet 25 is provided on the outer circumference of the annular housing 10 between every two slide rods 13, and a support rod 26 is rotatably provided on one side of the slide rod 13, and the support rod 26 is engaged with the ratchet 25.

[0041] Specifically, the engagement of the ratchet 25 and the support rod 26 can lock the travel of the slide rod 13, so that the arc-shaped induction clamping plate 11 will not obstruct the cable head when it is installed into the temperature measuring device, thus facilitating the installation of the cable head.

[0042] When it is necessary to install the cable head, firstly, rotate each support rod 26 so that each support rod 26 engages with its corresponding ratchet 25, forming a tension fixation on the first spring 14, thereby increasing the distance between the multiple arc-shaped induction clamping plates 11, making it easier for the cable head to enter the device.

[0043] Then, press down on multiple rotating rods 15, causing the rotating rods 15 to compress the elastic telescopic rods 23 connected to them. Each rotating rod 15 drives the clamping wheel 16 connected to it to move closer to the inner wall of the annular housing 10 until the distance between the opposing clamping wheels 16 is slightly larger than the diameter of the cable head. Then insert the cable head between the multiple clamping wheels 16. At this time, the pressure on the rotating rods 15 can be released, and the multiple clamping wheels 16 form a clamp on the outer wall of the cable head.

[0044] Finally, the cable is pushed, and the cable head is driven into the device until the part of the cable head that needs to be measured in real time is moved between multiple arc-shaped induction clamping plates 11. Then, multiple support rods 26 are rotated, so that the multiple support rods 26 are released from the tension support of the first spring 14. This causes the first spring 14 to pull one end of the slide rod 13 towards the axis of the annular housing 10. Each slide rod 13 drives the arc-shaped induction clamping plate 11 connected to it to move towards the axis of the annular housing 10 until the arc-shaped clamping surface of the arc-shaped induction clamping plate 11 is in close contact with the outside of the cable head.

[0045] Example 2:

[0046] Based on Example 1, further examples are made, such as... Figure 5 As shown, each clamping wheel 16 is provided with multiple anti-slip strips 17 in a ring.

[0047] Specifically, the anti-slip strip 17 is made of elastic anti-slip material, which can protect the cable head when it enters the device and prevent the cable head from being scratched by the clamping wheel 16. It can also increase the friction between the clamping wheel 16 and the cable head to prevent the cable head from falling off the temperature measuring device.

[0048] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0049] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0050] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A real-time temperature measurement device for cable heads, characterized in that, The device includes an annular housing (10), inside which multiple arc-shaped sensing clamping plates (11) are slidably arranged. Each arc-shaped sensing clamping plate (11) has a rotating rod (15) rotatably arranged on one side. One end of the rotating rod (15) is rotatably arranged with a clamping wheel (16). One side of the clamping wheel (16) is rotatably connected with a rotating shaft (20). A first check wheel (18) is fixedly arranged on the side wall of the rotating rod (15) on the outer side of the rotating shaft (20). A second check wheel (19) is slidably arranged on the outer side of the first check wheel (18) on the rotating shaft (20). A second spring (30) is arranged between the second check wheel (19) and the rotating shaft (20). An elastic telescopic rod (23) is rotatably connected between the rotating rod (15) and the annular housing (10). Each arc-shaped sensing clamping plate (11) has multiple temperature sensors (24) arranged on one side.

2. The real-time temperature measuring device for cable heads according to claim 1, characterized in that, Each of the arc-shaped sensing clamping plates (11) has a through hole (12) on one side of the side wall of the annular housing (10). A slide rod (13) is slidably disposed inside each of the through holes (12), and one end of each slide rod (13) is fixedly connected to one side of the adjacent arc-shaped sensing clamping plate (11).

3. The real-time temperature measuring device for cable heads according to claim 2, characterized in that, Each of the slide bars (13) is provided with a first spring (14) on the outer surface of the annular housing (10).

4. The real-time temperature measuring device for cable heads according to claim 3, characterized in that, Each of the slide rods (13) has a locking protrusion (27) and a locking groove (28) that can cooperate with each other on its end face.

5. A real-time temperature measuring device for cable heads according to claim 4, characterized in that, A ratchet (25) is provided on the outer circumference of the annular housing (10) between each pair of slide rods (13). A support rod (26) is rotatably provided on one side of each slide rod (13), and the support rod (26) engages with the ratchet (25).

6. The real-time temperature measuring device for cable heads according to claim 1, characterized in that, Each of the rotating shafts (20) is provided with a groove (21), and a slider (22) is slidably disposed inside each groove (21). The slider (22) is fixedly connected to the inner wall of the second check wheel (19).

7. The real-time temperature measuring device for cable heads according to claim 1, characterized in that, Each of the clamping wheels (16) is provided with a plurality of anti-slip strips (17) in a ring.

8. A real-time temperature measuring device for cable heads according to claim 2, characterized in that, Each of the arc-shaped induction clamping plates (11) has multiple anti-slip grooves (29) on its clamping surface.

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