Power cable operation data acquisition device
Through the power cable operation data acquisition device integrating temperature sensors and current transformers, the increase in workload and fixing problems caused by separate arrangements are solved, and efficient acquisition and fixation of cable temperature and current data is achieved.
Patent Information
- Application Number
- CN202422344731.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the prior art, the temperature sensor and the open-close current transformer need to be arranged separately, which increases the workload and is difficult to fix in a narrow space, affecting the accuracy of data acquisition.
The temperature sensor and the open-close current transformer are integrated, and the outer ring and inner ring structure is adopted. The clamping arm is cooperated with the damper to achieve tightening and fixing the power cables and collect current data through the magnetic induction assembly.
The integrated acquisition of temperature and current data is realized, the operation is simplified, the accuracy and fixation reliability of data acquisition are improved, and the dependence on fixtures is reduced.
Smart Images
Figure CN223064657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power monitoring, and particularly to a device for collecting operation data of power cables. Background Technique
[0002] Power cables play an important role in power transmission, and their reliable operation is related to the stability and safety of the entire power system. To ensure the stable operation of power cables, maintenance personnel usually need to carry collection devices for regular inspections.
[0003] Currently, during inspections, temperature sensors and current sensors connected to the collection device usually need to be respectively arranged on the outer peripheral wall of the power cable to perform non-contact sampling of temperature data and electrical parameters during cable operation. Among them, split-core current transformers are usually used for sampling electrical parameters. When the split-core current transformer is clamped on the power cable, in order to prevent it from shaking, fixing parts such as cable ties are usually also required to firmly fix the split-core current transformer on the power cable.
[0004] Since the temperature sensor and the split-core current transformer need to be arranged separately, not only does it increase the workload, but also fixing parts are required to fix the sensors. If the power cable is in an area with a small working space, it may not be possible to fix these sensors at this time, thus affecting the accuracy of the collected data. Summary of the Utility Model
[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a device for collecting operation data of power cables, aiming to integrate the temperature sensor and the split-core current transformer together and facilitate fixing when the sensor is sleeved on the power cable.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] A device for collecting operation data of a power cable, comprising an outer ring, a magnetic induction component, an inner ring, at least two clamping arms, a damping member, and a temperature sensor. The outer ring includes two first concave ring bodies detachably connected together. The magnetic induction component includes two concave ring-shaped magnetic cores and a coil. The two concave ring-shaped magnetic cores are respectively arranged on the two first concave ring bodies, and the coil is wound around one of the concave ring-shaped magnetic cores. When the two first concave ring bodies are connected, the two concave ring-shaped magnetic cores form a closed magnetic path surrounding the power cable. The inner ring includes two second concave ring bodies, and the two first concave ring bodies are respectively sleeved on the two second concave ring bodies, so that the inner circumferential surface of the first concave ring body slides on the outer circumferential surface of the second concave ring body. The clamping arms are uniformly arranged in an array along the circumferential direction of the outer ring. One end of the clamping arm is rotatably arranged on the outer ring and the inner ring, and the other end of the clamping arm is provided with a clamping portion. The damping member is arranged between the outer ring and the inner ring to generate a restoring force when the clamping arm rotates radially outward along the outer ring. The temperature sensor is arranged on the clamping portion.
[0008] Further, a first sliding groove extending to the outer circumferential surface of the inner ring is provided on the outer circumferential surface of the outer ring. The damping member includes a first fixing member, a second fixing member, and an elastic member. The first fixing member is arranged on the outer circumferential surface of the inner ring and is located in the first sliding groove. The second fixing member is arranged in the first sliding groove, and the second fixing member is connected to the outer ring. Two ends of the elastic member are respectively connected to the first fixing member and the second fixing member.
[0009] Further, the device for collecting operation data of the power cable further includes a limiting device arranged between the outer ring and the inner ring to limit the relative sliding distance between the first concave ring body and the second concave ring body.
[0010] Further, a second sliding groove extending to the outer circumferential surface of the inner ring is provided on the outer circumferential surface of the outer ring. A first threaded hole is provided on the outer circumferential surface of the inner ring. The limiting device includes a first bolt, and the first bolt passes through the second sliding groove and is threadedly connected to the first threaded hole.
[0011] Further, the other end of the first bolt is located outside the second sliding groove, and its size is larger than the width of the second sliding groove along the axial direction of the outer ring.
[0012] Further, the device for collecting operation data of the power cable further includes a locking device arranged between the outer ring and the inner ring to prevent the relative sliding between the first concave ring body and the second concave ring body.
[0013] Further, a second threaded hole is provided on the outer circumferential surface of the outer ring, and the second threaded hole extends to the outer circumferential surface of the inner ring. The locking device includes a second bolt, and the second bolt passes through the second threaded hole and abuts against the outer circumferential surface of the inner ring.
[0014] Further, the temperature sensor is a thin-film temperature sensor. A roller is rotatably arranged on the clamping arm, and the thin-film temperature sensor is arranged on the circumferential surface of the roller.
[0015] Further, the power cable operation data acquisition device further includes a handheld terminal, and the handheld terminal is electrically connected to the coil and the temperature sensor.
[0016] Further, the power cable operation data acquisition device further includes a humidity sensor. The humidity sensor is arranged on the outer ring and / or the inner ring, and the handheld terminal is electrically connected to the humidity sensor.
[0017] The utility model has the following beneficial effects: By sleeving the outer ring and the inner ring together, the two can rotate relative to each other. The clamping arms are rotatably arranged on both the outer ring and the inner ring, which plays a role in restricting the sliding direction of the outer ring and the inner ring. Moreover, when the clamping arms are opened, by holding the inner ring by hand, the clamping arms drive the outer ring to rotate circumferentially relative to the inner ring. Due to the existence of the damping member, the clamping arms can tightly clamp on the power cable. At this time, the temperature sensor on the clamping part of the clamping arms is in contact with the surface of the power cable, achieving the purpose of collecting temperature data. At the same time, under the action of the magnetic field generated by the current in the power cable, the magnetic induction component generates an induced current, and the purpose of collecting current data is achieved through the induced current.
[0018] In addition to the purposes, features, and advantages described above, the utility model has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:
[0020] Figure 1 is a schematic structural diagram of a first perspective of an embodiment of the utility model;
[0021] Figure 2 is Figure 1 a schematic structural diagram of a second perspective of the embodiment in
[0022] Figure 3 a partial sectional view of an embodiment of the utility model;
[0023] Legend Explanation:
[0024] Outer ring 100, first concave ring body 110, first chute 120, second chute 130, second threaded hole 140, magnetic induction component 200, concave ring-shaped magnetic core 210, coil 220, inner ring 300, second concave ring body 310, first threaded hole 320, clamping arm 400, roller 410, damping member 500, first fixing member 510, second fixing member 520, elastic member 530, limiting device 700, locking device 800, handheld terminal 900. Detailed implementation manners
[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0027] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0028] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
[0029] Refer to Figures 1 to 3 , a power cable operation data acquisition device according to an embodiment of the present invention, includes an outer ring 100, a magnetic induction component 200, an inner ring 300, at least two clamping arms 400, a damping member 500, and a temperature sensor.
[0030] The outer ring 100 includes two first concave ring bodies 110 detachably connected together. Optionally, the first concave ring bodies 110 can be semi-circular rings or other rings, but it is necessary to ensure that when the two first concave ring bodies 110 are buckled together, they can form a ring, and also ensure that the power cable can be placed in the concave area in the middle of the first concave ring bodies 110. In addition, the two first concave ring bodies 110 can be buckled by means of hooks and buckles, or can be connected by fasteners. Of course, other mechanical structures that can separate and connect the two first concave ring bodies 110 are also possible. It should be noted that for safe use, the outer ring 100 needs to be made of a material with good insulation performance. Further, a flame-retardant material can also be used.
[0031] The magnetic induction assembly 200 includes two concave ring-shaped magnetic cores 210 and a coil 220. The two concave ring-shaped magnetic cores 210 are respectively arranged in the two first concave ring bodies 110, and the coil 220 is wound around one of the concave ring-shaped magnetic cores 210. When the two concave ring-shaped magnetic cores 210 are abutted, the two concave ring-shaped magnetic cores 210 are spliced to form a closed magnetic path. The shape of the concave ring-shaped magnetic core 210 needs to match the shape of the corresponding first concave ring body 110, so that when the two first concave ring bodies 110 are connected to form a ring, the two concave ring-shaped magnetic cores 210 can also be connected to form a ring. Optionally, a cavity can be provided in the first concave ring body 110 to accommodate the concave ring-shaped magnetic core 210, or the two concave ring-shaped magnetic cores 210 and the coil 220 can be integrally injection-molded with the first concave ring body 110. In addition, in order to improve the induction ability, the concave ring-shaped magnetic core 210 can be selected from a soft magnetic core, an amorphous magnetic core, or an amorphous nano magnetic core. Further, in order to prevent the two concave ring-shaped magnetic cores 210 from being broken by impact when abutted, a high-silicon steel block connected to the concave ring-shaped magnetic core 210 can be provided at the splicing part of the two concave ring-shaped magnetic cores 210. In this way, when the two concave ring-shaped magnetic cores 210 are abutted, the high-silicon steel block and the concave ring-shaped magnetic core 210 form a closed magnetic path. When the magnetic field generated by the current on the power cable conducts on the closed magnetic flux path formed by the concave ring-shaped magnetic cores 210, the coil 220 will generate an induced current. By collecting and processing this current, the operating current of the power cable can be obtained.
[0032] The inner ring 300 includes two second concave ring bodies 310. The two first concave ring bodies 110 are respectively sleeved on the two second concave ring bodies 310, so that the inner circumferential surface of the first concave ring body 110 slides on the outer circumferential surface of the second concave ring body 310.
[0033] The clamping arms 400 are evenly arranged in the circumferential direction of the outer ring 100. For example, when two clamping arms 400 are provided, the two clamping arms 400 are symmetrically arranged. One end of the clamping arm 400 is rotatably arranged on the outer ring 100 and the inner ring 300. In this way, the connection of the clamping arms 400 enables the circumferential sliding of the first inner concave ring body 110 relative to the second inner concave ring body 310. The other end of the clamping arm 400 is provided with a clamping portion, and the clamping portion clamps the power cable. Since the clamping arm 400 can rotate relative to the outer ring 100 and the inner ring 300, different-diameter power cables can be adaptively clamped by rotating the clamping arm 400.
[0034] The damping member 500 is arranged between the outer ring 100 and the inner ring 300. When the clamping arm 400 rotates radially outward along the outer ring 100, that is, when the clamping arms 400 are opened at this time, the damping member 500 generates a restoring force, so that the clamping portion on the clamping arm 400 tightly clamps on the surface of the power cable, thereby preventing the power cable operation data acquisition device from loosening or shaking and affecting the acquisition of the operating current of the power cable.
[0035] A temperature sensor (not shown in the drawings) is arranged on the clamping portion. When the clamping portion on the clamping arm 400 tightly clamps on the surface of the power cable, the temperature sensor fits on the surface of the power cable, so that the operating temperature of the power cable can be obtained.
[0036] In some embodiments, as Figure 3 shown, a first sliding groove 120 extending to the outer circumferential surface of the inner ring 300 is provided on the outer circumferential surface of the outer ring 100. The damping member 500 includes a first fixing member 510, a second fixing member 520, and an elastic member 530.
[0037] Among them, the first fixing member 510 is arranged on the outer circumferential surface of the inner ring 300 and is located in the first sliding groove 120. The second fixing member 520 is arranged in the first sliding groove 120, and the second fixing member 520 is connected to the outer ring 100. The two ends of the elastic member 530 are respectively connected to the first fixing member 510 and the second fixing member 520. Optionally, the first fixing member 510 can be a screw, and the screw passes through the first sliding groove 120 and is threadedly connected to the inner ring 300, so as to facilitate assembly. The second fixing member 520 can be a fixing column running across the first sliding groove 120, and the two ends of the fixing column are connected to the upper and lower side walls of the first sliding groove 120. The elastic member 530 can be a double-hook tension spring, and the hooks at both ends of the double-hook tension spring are hooked on the first fixing member 510 and the second fixing member 520.
[0038] In this embodiment, when the first inner concave ring body 110 and the second inner concave ring body 310 slide relative to each other, the elastic member 530 is stretched and deformed to generate a reverse pulling force, and this pulling force enables the clamping portion on the clamping arm 400 to tightly clamp on the surface of the power cable.
[0039] In some embodiments, as Figure 1 、 Figure 3 shown, in order to avoid damage to the clamping arm 400 due to excessive opening angle, or damage to the first inner concave ring body 110, or damage to the second inner concave ring body 310, the power cable operation data acquisition device further includes a limiting device 700. The limiting device 700 is arranged between the outer ring 100 and the inner ring 300 to limit the relative sliding distance between the first inner concave ring body 110 and the second inner concave ring body 310.
[0040] In some embodiments, as Figure 3 shown, a second chute 130 extending to the outer circumferential surface of the inner ring is provided on the outer circumferential surface of the outer ring 100, and a first threaded hole 320 is provided on the outer circumferential surface of the inner ring 300. The limiting device 700 includes a first bolt, and the first bolt passes through the second chute 130 and is threadedly connected to the first threaded hole 320. After the first bolt passes through the second chute 130 and is rotated and screwed into the first threaded hole 320, due to the blocking effect of the left and right ends of the second chute 130, when the second chute 130 contacts the left and right ends of the second chute 130, the first inner concave ring body 110 and the second inner concave ring body 310 cannot slide relative to each other.
[0041] In some embodiments, as Figure 3 shown, in order to facilitate manually screwing the first bolt into the first threaded hole 320, the end of the first threaded hole 320 far from the inner ring 300 is located outside the second chute 130, and in order to prevent the first bolt from being completely screwed into the second chute 130, the size of the end of the first threaded hole 320 far from the inner ring 300 is larger than the vertical width of the second chute 130.
[0042] In some embodiments, as Figure 1 、 Figure 3 shown, the power cable operation data acquisition device further includes a locking device 800. The locking device 800 is arranged between the outer ring 100 and the inner ring 300 to prevent the first inner concave ring body 110 and the second inner concave ring body 310 from sliding relative to each other.
[0043] In some embodiments, as Figure 3 shown, a second threaded hole 140 is provided on the outer circumferential surface of the outer ring 100, and the second threaded hole 140 extends to the outer circumferential surface of the inner ring 300. The locking device 800 includes a second bolt. After passing through the second threaded hole 140, the second bolt only abuts against the outer circumferential surface of the inner ring 300, making it difficult for the first inner concave ring body 110 and the second inner concave ring body 310 to slide relative to each other. Optionally, a plurality of locking devices 800 can be arranged along the circumferential direction of the outer ring, so that a plurality of second bolts simultaneously abut against different positions on the outer circumferential surface of the inner ring 300, improving the degree of difficulty for the first inner concave ring body 110 and the second inner concave ring body 310 to slide relative to each other.
[0044] In some embodiments, as Figure 2 shown, when the clamping arm 400 rotates at different angles, in order to facilitate the measurement of the temperature of the surface of the power cable, a thin-film temperature sensor is selected as the temperature sensor. A roller 410 is rotatably arranged on the clamping arm 400, and the roller 410 forms a clamping portion on the clamping arm 400. The rotation of the roller 410 can conveniently adjust the clamping position of the clamping arm 400. The thin-film temperature sensor is arranged on the circumferential surface of the roller 410. In this way, no matter what angle the clamping arm 400 is in, the thin-film temperature sensor can contact the surface of the power cable, so as to collect accurate temperature data.
[0045] In some embodiments, as Figure 1 shown, the power cable operation data acquisition device further includes a handheld terminal 900. The handheld terminal 900 is electrically connected to the coil 220 and the temperature sensor to analyze and process the data collected by the temperature sensor and the operating current of the power cable.
[0046] In some embodiments, in order to facilitate the measurement of the humidity data at the location where the power cable is located, the power cable operation data acquisition device further includes a humidity sensor (not shown in the drawings). The humidity sensor can be arranged on the outer ring 100, or can be arranged on the inner ring 300. Of course, multiple humidity sensors can also be arranged. Some humidity sensors are arranged on the outer ring 100, and some other humidity sensors are arranged on the inner ring 300. The handheld terminal 900 is electrically connected to the humidity sensor to analyze and process the data collected by the humidity sensor.
[0047] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A device for collecting operation data of a power cable, characterized in that, The power cable operation data acquisition device includes: An outer ring (100), the outer ring (100) includes two first concave ring bodies (110) detachably connected together; A magnetic induction component (200), including two concave ring-shaped magnetic cores (210) and a coil (220). The two concave ring-shaped magnetic cores (210) are respectively arranged on the two first concave ring bodies (110), and the coil (220) is wound around one of the concave ring-shaped magnetic cores (210). When the two first concave ring bodies (110) are connected, the two concave ring-shaped magnetic cores (210) form a closed magnetic path surrounding the power cable; An inner ring (300), the inner ring (300) includes two second concave ring bodies (310), and the two first concave ring bodies (110) are respectively sleeved on the two second concave ring bodies (310) so that the inner circumferential surface of the first concave ring body (110) slides on the outer circumferential surface of the second concave ring body (310); At least two clamping arms (400), uniformly arranged in a circumferential array along the outer ring (100). One end of the clamping arm (400) is rotatably arranged on the outer ring (100) and the inner ring (300), and the other end of the clamping arm (400) is provided with a clamping portion; A damping member (500), arranged between the outer ring (100) and the inner ring (300) to generate a restoring force when the clamping arm (400) rotates radially outward along the outer ring (100); A temperature sensor (600), arranged on the clamping portion.
2. The power cable operation data acquisition device according to claim 1, wherein A first sliding groove (120) extending to the outer circumferential surface of the inner ring (300) is provided on the outer circumferential surface of the outer ring (100). The damping member (500) includes: A first fixing member (510), arranged on the outer circumferential surface of the inner ring (300) and located in the first sliding groove (120); A second fixing member (520), arranged in the first sliding groove (120), and the second fixing member (520) is connected to the outer ring (100); An elastic member (530), with both ends of the elastic member (530) connected to the first fixing member (510) and the second fixing member (520) respectively.
3. The power cable operation data acquisition device according to claim 1, wherein The power cable operation data acquisition device further includes a limiting device (700), and the limiting device (700) is arranged between the outer ring (100) and the inner ring (300) to limit the relative sliding distance between the first concave ring body (110) and the second concave ring body (310); 4. The power cable operation data acquisition device according to claim 3, wherein A second sliding groove (130) extending to the outer circumferential surface of the inner ring (300) is provided on the outer circumferential surface of the outer ring (100). A first threaded hole (320) is provided on the outer circumferential surface of the inner ring (300). The limiting device (700) includes a first bolt, and the first bolt passes through the second sliding groove (130) and is threadedly connected to the first threaded hole (320).
5. The power cable operation data acquisition device according to claim 4, wherein The other end of the first bolt is located outside the second chute (130), and its dimension is larger than the width of the second chute (130) along the axial direction of the outer ring (100).
6. The power cable operation data acquisition device according to claim 1, characterized in that The power cable operation data acquisition device further includes a locking device (800). The locking device (800) is arranged between the outer ring (100) and the inner ring (300) to prevent relative sliding between the first concave ring body (110) and the second concave ring body (310).
7. The power cable operation data acquisition device according to claim 6, characterized in that, A second threaded hole (140) is provided on the outer circumferential surface of the outer ring (100), and the second threaded hole (140) extends to the outer circumferential surface of the inner ring (300). The locking device (800) includes a second bolt that passes through the second threaded hole (140) and abuts against the outer circumferential surface of the inner ring (300).
8. The power cable operation data acquisition device according to claim 1, wherein The temperature sensor (600) is a thin-film temperature sensor. A roller (410) is rotatably arranged on the clamping arm (400), and the thin-film temperature sensor is arranged on the circumferential surface of the roller (410).
9. The power cable operation data acquisition device according to any one of claims 1 to 8, characterized in that, The power cable operation data acquisition device further includes a handheld terminal (900). The handheld terminal (900) is electrically connected to the coil (220) and the temperature sensor (600).
10. The power cable operation data acquisition device according to claim 9, characterized in that, The power cable operation data acquisition device further includes a humidity sensor. The humidity sensor is arranged on the outer ring (100) and / or the inner ring (300), and the handheld terminal (900) is electrically connected to the humidity sensor.