CT (Current Transformer) electricity taking device for 27.5 kV transmission cable of electrified railway

Abstract

A CT power taking device used on a 27.5 kV transmission cable of an electrified railway comprises a bracket (2) installed on the 27.5 kV transmission cable of the electrified railway, a hoop (3) arranged on the bracket (2) and a CT power taking body (1) arranged in the bracket (2), through the bracket (2) and the hoop (3), the CT power taking body (1) is closed to form an annular bracket body support, and through the CT power taking body (1), the CT power taking body (1) is connected with the bracket (2). Inductive power taking on the 27.5 kV transmission cable of the electrified railway is realized, a platform with a protection accommodating interval is mounted on the 27.5 kV transmission cable of the electrified railway, and the technical problem that a bolt fastening or welding mode is mostly adopted as a connection mode of a CT power taking sensor is solved. Therefore, the CT power taking body (1) and the 27.5 kV transmission cable of the electrified railway are prevented from being damaged in the mounting and dismounting processes.

Description

Technical Field

[0001] This utility model relates to a CT power supply device, and more particularly to a CT power supply device for use on a 27.5kV transmission cable of an electrified railway. Background Technology

[0002] A CT (inductive current transformer) power supply is a device that uses a CT installed on a power line to obtain power through the principle of electromagnetic induction. It consists of two parts: the CT (energy harvesting transformer) and a power conversion module (which converts the electrical energy harvested by the CT into the required DC voltage). Therefore, CT power harvesting devices used on 27.5kV transmission cables of electrified railways are important electrical components. In existing CT power harvesting devices for 27.5kV transmission cables of electrified railways, the current CT sensor connection methods mostly use bolt fastening or welding. These methods have many inconveniences in installation, disassembly, and maintenance, such as complex installation processes, difficult disassembly, and easy damage to sensors or cables.

[0003] Furthermore, traditional connection methods are prone to loosening and poor contact during long-term use, leading to inaccurate current monitoring data and even causing safety accidents.

[0004] This utility model, through the technical feature of installing a platform with a protected containment range on a 27.5kV transmission cable of an electrified railway, effectively explores and studies the technical problem that the connection method of CT power-taking sensors mostly adopts bolt fastening or welding. Summary of the Invention

[0005] The subject of this utility model is a CT power supply device used on a 27.5kV transmission cable of an electrified railway.

[0006] In order to overcome the above-mentioned technical shortcomings, the purpose of this utility model is to provide a CT power supply device for a 27.5kV transmission cable of an electrified railway, thereby preventing damage to the CT power supply body and the 27.5kV transmission cable of the electrified railway during installation and disassembly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a bracket installed on a 27.5kV transmission cable of an electrified railway, a clamp set on the bracket, and a CT power-taking body set in the bracket.

[0008] By designing a bracket, clamp, and CT power-taking body, the bracket and clamp form a closed annular support for the CT power-taking body. The CT power-taking body enables inductive power extraction from the 27.5kV transmission cable of the electrified railway, and allows for the installation of a platform with a protected containment area on the 27.5kV transmission cable of the electrified railway. This solves the technical problem of the common use of bolt fastening or welding methods for connecting CT power-taking sensors, thus preventing damage to the CT power-taking body and the 27.5kV transmission cable of the electrified railway during installation and disassembly.

[0009] This utility model designs a method in which the support, clamp, and CT power take-up body are interconnected by installing a platform with a protection and containment range on a 27.5kV transmission cable of an electrified railway.

[0010] This utility model is designed to connect the support base, clamp, and CT power supply body in a closed annular support manner.

[0011] The technical effects of the above three technical solutions are: highlighting the technical feature of installing a platform with a protected containment range on a 27.5kV transmission cable of an electrified railway, and introducing its application in the technical field of CT power take-off devices used on 27.5kV transmission cables of electrified railways.

[0012] This utility model is designed and includes a first accessory device, which is disposed on the support and is configured as a cover plate.

[0013] This utility model is designed to include a second accessory device, which is disposed between the CT power-collecting body and the support, and the second accessory device is an alloy strip.

[0014] This utility model is designed to include a third accessory device, which is disposed between the second accessory device and the support, and the third accessory device is configured as a spring.

[0015] The technical effect of the above three technical solutions is that they enable the integrated installation of other components and expand the technical effect of this utility model.

[0016] This utility model is designed with a clamp, an alloy strip and a cover plate respectively provided on the support, and a CT power-taking body and a spring respectively provided between the alloy strip and the support.

[0017] The technical effect of the above technical solution is that the CT power-taking body, support, clamp, alloy strip, spring and cover plate constitute the basic technical solution of this utility model, which solves the technical problem of this utility model.

[0018] This utility model designs a CT power-gathering body as a CT power source, with the housing of the CT power-gathering body positioned between the support and the alloy strip. The outer periphery of the housing of the CT power-gathering body is configured to be in contact with the support, and the inner periphery of the housing of the CT power-gathering body is configured to be in contact with the alloy strip. The output cable of the CT power-gathering body is configured to be connected through the support.

[0019] The technical effect of the above solution is that it enables inductive power extraction from the 27.5kV transmission cable of the electrified railway.

[0020] This utility model designs a support comprising a groove I, a groove II, a foot plate I, a foot plate II, a shaft, and a snap-fit ​​part. A receiving hole I is provided on the outer vertical part of the groove II. Receiving holes are provided on both the foot plate I and the foot plate II. One side of the lower end face of the groove I and one side of the lower end face of the groove II are respectively connected to the inner end face of the foot plate I. The other side of the lower end face of the groove I and the other side of the lower end face of the groove II are respectively connected to the inner end face of the foot plate II. The shaft is configured to be through-connected to one end of the groove I and one end of the groove II. The inner side of the longitudinal part of the snap-fit ​​part is connected to the end face of the groove II, and one inner side of the horizontal part of the snap-fit ​​part is connected to the outer peripheral side of the groove II. The outer side of the longitudinal part of the snap-fit ​​part is configured to contact the end face of the groove I. One of the inner sides of the horizontal part of the buckle is configured to contact the outer side of the periphery of the slot I. The slot I and slot II are respectively configured to be connected to the CT power-taking body, the alloy strip and the spring. The inner wall of the inner vertical part of the slot I and the inner wall of the inner vertical part of the slot II are respectively configured to contact the alloy strip. The lower side of the inner wall of the outer vertical part of the slot I and the lower side of the inner wall of the outer vertical part of the slot II are respectively configured to contact the CT power-taking body. The upper side of the inner wall of the outer vertical part of the slot I and the upper side of the inner wall of the outer vertical part of the slot II are respectively configured to contact the spring. The open part of the slot I and the open part of the slot II are respectively configured to connect to the cover plate. The foot plate I and the foot plate II are respectively configured to be connected to the clamp through. The outer side of the foot plate I and the outer side of the foot plate II are respectively configured to contact the clamp. The receiving hole I is configured to connect to the output cable of the CT power-taking body.

[0021] This utility model is designed such that the groove I and groove II are arc-shaped grooves with a cross-section of U-shape, and the outlines of groove I and groove II are distributed along a full circumference. The foot plate I and foot plate II are C-shaped plates, the shaft is rod-shaped, the buckle is T-shaped elastic plate, and the receiving hole I and receiving hole are respectively hole-shaped.

[0022] The technical effect of the above two solutions is that they achieve the upper closed annular support.

[0023] This utility model is designed with a clamp consisting of an annular strip and a bolt and nut. The end of the annular strip is configured to be bolted to the bolt and nut. The bolt flange of the bolt and nut is configured to contact the peripheral side end of one of the annular strips, and the nut of the bolt and nut is configured to contact the peripheral side end of the other annular strip. The annular strip is configured to be wrapped around the support, and the inner peripheral side of the annular strip is configured to contact the support.

[0024] This utility model is designed such that the annular strip portion is a C-shaped strip with a through hole at the end, the bolt of the bolt and nut portion is a hexagonal bolt, the nut of the bolt and nut portion is a hexagonal nut, and the through hole of the annular strip portion is configured to connect with the bolt of the bolt and nut portion.

[0025] The technical effect of the above two solutions is that they achieve fixation through a circumferential action.

[0026] This utility model is designed with a cover plate that is a C-shaped transparent plastic sheet and is connected to the support in a covering manner. The lower end edge of the cover plate is connected to the support in a contact manner.

[0027] The technical effect of the above solution is that it achieves the sealing of the plate.

[0028] This utility model designs an alloy strip as a C-shaped permalloy block and an alloy strip as an embedded connection with a bracket. The lower end face of the alloy strip is configured to contact the bracket, and the inner periphery of the alloy strip is configured to contact the bracket. The lower part of the outer periphery of the alloy strip is configured to contact the CT power-taking body, and the upper part of the outer periphery of the alloy strip is configured to contact the spring.

[0029] The technical effect of the above solution is that it enables permalloy to conduct magnetism.

[0030] This utility model is designed such that the spring is a conical spring and is embedded in the support, the extended end of the spring is connected to the support in contact, and the retracted end of the spring is connected to the alloy strip in contact.

[0031] The technical effect of the above solution is that it enables the spring body to be supported and fixed.

[0032] This utility model is designed such that the CT power receiving body, the support, the clamp, and the cover are arranged in a bracket support manner, and the CT power receiving body, the support, the clamp, and the cover are arranged in an alloy strip manner, and the CT power receiving body, the support, the clamp, the cover, and the alloy strip are arranged in an elastic body fixing manner.

[0033] This utility model is designed such that the center line of the CT power-collecting body, the center line of the bracket, the center line of the clamp, the center line of the alloy strip, and the center line of the cover plate are arranged on the same straight line, multiple springs are arranged between the alloy strip and the bracket, and the annular strip is respectively arranged to connect with foot plate part I and foot plate part II.

[0034] This utility model is designed with a CT power supply body having an inner diameter of Φ80mm, a voltage level of 5~35Kv, an operating environment of -40℃ to +85℃, and a dustproof and waterproof protection level of IP68.

[0035] The technical effect of the above technical solution is that it achieves optimal parameter settings.

[0036] The technical advantages of this invention are as follows: This innovative connection method employs a unique quick-connect mechanism, enabling rapid connection and disconnection between the CT power sensor and the cable, thereby greatly simplifying the installation and disassembly process and improving work efficiency. Simultaneously, by using advanced fastening technology and materials, the stability and reliability of the connection points are ensured, avoiding problems such as loosening and poor contact, and guaranteeing the accuracy of current monitoring data. Furthermore, the connection structure is easy to clean and inspect, reducing maintenance costs and extending the service life of the CT power sensor.

[0037] In terms of technical details, this connection method utilizes a connection mechanism made of high-strength, corrosion-resistant materials, possessing excellent mechanical and electrical properties, and capable of adapting to complex working environments. A specially designed fastening structure ensures a tight connection between the sensor and the cable, while guaranteeing the reliability and safety of the connection. The connection section employs a sealed design, effectively preventing the influence of external factors such as moisture and dust on the connection point, further improving the stability and reliability of the connection.

[0038] The application of this innovative quick-connection method for CT power sensors brings significant advantages. Firstly, rapid connection and disconnection reduce installation and disassembly time, improving the overall efficiency of the monitoring system. Secondly, the connection structure is easy to maintain, reducing maintenance costs and extending the equipment's lifespan. Finally, it ensures the accuracy and real-time performance of current monitoring data, enhancing the overall performance of the monitoring system and providing strong support for the safe operation of electrified railways.

[0039] Quick connection: Through a uniquely designed connection mechanism, the CT power sensor and cable can be quickly connected and disconnected, greatly simplifying the installation and disassembly process and improving work efficiency.

[0040] High reliability: Advanced fastening technology and materials are used to ensure the stability and reliability of the connection points, avoiding problems such as loosening and poor contact, and improving the accuracy of current monitoring data.

[0041] High safety: The connection structure complies with relevant safety standards, effectively preventing safety accidents such as current leakage and electric shock, and ensuring the safety of staff.

[0042] Easy to maintain: The connection structure is easy to clean and inspect, reducing maintenance costs and extending the lifespan of the CT power sensor.

[0043] In this technical solution, the CT power-taking body, the bracket, and the clamp are the basic components and essential technical features of this utility model. The alloy strip, the spring, and the cover plate are functional components and features that achieve other technical effects of this utility model. The design of the technical features such as the groove I, the groove II, the foot plate I, the foot plate II, the shaft, the snap-fit, the receiving hole I, the receiving hole, the annular strip, and the bolt and nut are technical features that comply with the Patent Law and its implementing regulations.

[0044] In this technical solution, the platform with a protected containment range is installed on the 27.5kV transmission cable of the electrified railway by means of a bracket and a clamp.

[0045] In this technical solution, the key technical features are the mounting base, clamp, and CT power supply body of the platform with a protected containment zone installed on the 27.5kV transmission cable of the electrified railway. In the technical field of CT power supply device for 27.5kV transmission cable of electrified railway, it has novelty, inventiveness and practicality. The terminology in this technical solution can be explained and understood by the patent literature in this technical field. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of one of the first embodiments of the present utility model.

[0048] Figure 2 This is a schematic diagram of the structure of support 2.

[0049] Figure 3 This is a schematic diagram showing the connection relationship between the support 2 and the clamp 3.

[0050] Figure 4 This is an installation diagram of one of the first embodiments of the present invention.

[0051] CT power take-up body-1, bracket-2, clamp-3, alloy strip-4, spring-5, cover plate-6, groove I-20, groove II-21, foot plate I-22, foot plate II-23, shaft-24, snap-fit-27, receiving hole I-25, receiving hole-26, annular strip-31, bolt and nut-32. Detailed Implementation

[0052] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood as not dispensing the presence or addition of one or more other elements or combinations thereof.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are all commercially available. If the processing conditions are not explicitly stated, please refer to the product manual or follow the conventional methods in the field.

[0056] 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.

[0057] Figure 1 As one of the first embodiments of this utility model, this embodiment is described in detail with reference to the accompanying drawings. It includes a CT power-collecting body 1, a support 2, a clamp 3, an alloy strip 4, a spring 5, and a cover plate 6. The clamp 3, alloy strip 4, and cover plate 6 are respectively provided on the support 2. The CT power-collecting body 1 and spring 5 are respectively provided between the alloy strip 4 and the support 2.

[0058] The second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0059] In this embodiment, the CT power supply body 1 is set as the CT power supply, and the housing of the CT power supply body 1 is disposed between the support 2 and the alloy strip 4. The outer periphery of the housing of the CT power supply body 1 is configured to be in contact with the support 2, and the inner periphery of the housing of the CT power supply body 1 is configured to be in contact with the alloy strip 4. The output cable of the CT power supply body 1 is configured to be connected through the support 2.

[0060] The CT power-taking body 1 forms a support connection point for the bracket 2 and the clamp 3. The CT power-taking body 1 realizes the connection with the bracket 2 and the connection with the clamp 3. Its technical purpose is to serve as a component for inductive power taking from the transmission cable.

[0061] In this embodiment, the support 2 is configured to include a groove I 20, a groove II 21, a foot plate I 22, a foot plate II 23, a shaft 24, and a snap-fit ​​part 27. A receiving hole I 25 is provided on the outer vertical part of the groove II 21. Receiving holes 26 are respectively provided on the foot plate I 22 and the foot plate II 23. One side of the lower end face of the groove I 20 and one side of the lower end face of the groove II 21 are respectively configured to connect with the inner end face of the foot plate I 22. The other side of the lower end face of the groove I 20... The lower end face of the side and the groove II 21 is respectively configured to connect with the inner end face of the foot plate II 23, and the shaft 24 is configured to be connected through to one end of the groove I 20 and one end of the groove II 21. The inner side of the longitudinal portion of the snap-fit ​​portion 27 is configured to connect with the end face of the groove II 21, and one inner side of the transverse portion of the snap-fit ​​portion 27 is configured to connect with the outer peripheral side end of the groove II 21. The outer side of the longitudinal portion of the snap-fit ​​portion 27 is configured to contact the end face of the groove I 20. The other inner side of the horizontal part of the connecting and snapping part 27 is configured to contact the outer peripheral side end of the groove part I 20. The groove part I 20 and the groove part II 21 are respectively configured to accommodate the CT power-taking body 1, the alloy strip 4 and the spring 5. The inner vertical wall of the groove part I 20 and the inner vertical wall of the groove part II 21 are respectively configured to contact the alloy strip 4. The lower side of the inner wall of the outer vertical part of the groove part I 20 and the lower side of the inner wall of the outer vertical part of the groove part II 21 are respectively configured to contact the CT power-taking body 1. Furthermore, the upper side of the inner wall of the outer vertical part of groove I20 and the upper side of the inner wall of the outer vertical part of groove II21 are respectively configured to be connected to the spring 5 in contact. The open part of groove I20 and the open part of groove II21 are respectively configured to be connected to the cover plate 6. The foot plate I22 and the foot plate II23 are respectively configured to be connected to the clamp 3 in a through connection. The outer side of foot plate I22 and the outer side of foot plate II23 are respectively configured to be connected to the clamp 3 in contact. The receiving hole I25 is configured to be connected to the output cable of the CT power supply body 1.

[0062] The support 2 forms a support connection point for the CT power-collecting body 1, clamp 3, alloy strip 4, spring 5, and cover plate 6. The groove I 20, groove II 21, and receiving hole I 25 realize the connection with the CT power-collecting body 1. The foot plate I 22 and foot plate II 23 realize the connection with the clamp 3. The groove I 20 and groove II 21 realize the connection with the alloy strip 4, the spring 5, and the cover plate 6. The shaft 24 and the snap-fit ​​part 27 realize the docking process of the groove I 20 and groove II 21. The receiving hole 26 realizes the process hole processing of the foot plate I 22 and foot plate II 23. Its technical purpose is to serve as a support carrier for the CT power-collecting body 1, alloy strip 4, spring 5, and cover plate 6.

[0063] In this embodiment, the groove I 20 and the groove II 21 are configured as arc-shaped grooves with a U-shaped cross section, and the outlines of the groove I 20 and the groove II 21 are configured to be distributed along a full circumference. The foot plate I 22 and the foot plate II 23 are configured as C-shaped plates, and the shaft 24 is configured as a rod. The buckle 27 is configured as a T-shaped elastic plate, and the receiving hole I 25 and the receiving hole 26 are respectively configured as holes.

[0064] Its technical purpose is to achieve the groove support for the CT power-collecting body 1, alloy strip 4 and spring 5.

[0065] In this embodiment, the clamp 3 is configured as an annular strip 31 and a bolt and nut 32, and the end of the annular strip 31 is configured to be bolted to the bolt and nut 32. The bolt flange of the bolt and nut 32 is configured to be in contact with the peripheral side end of one of the annular strips 31, and the nut of the bolt and nut 32 is configured to be in contact with the peripheral side end of the other annular strip 31. The annular strip 31 is configured to be wrapped around the support 2, and the peripheral inner side of the annular strip 31 is configured to be in contact with the support 2.

[0066] The clamp 3 forms a support connection point for the bracket 2. The annular bar 31 connects to the bracket 2, and the bolt and nut 32 connects the two annular bars 31. Its technical purpose is to serve as a component for clamping and fixing the bracket 2.

[0067] In this embodiment, the annular strip 31 is configured as a C-shaped strip with a through hole at the end, and the bolt of the bolt and nut part 32 is configured as a hexagonal bolt, the nut of the bolt and nut part 32 is configured as a hexagonal nut, and the through hole of the annular strip 31 is configured to be connected to the bolt of the bolt and nut part 32.

[0068] Its technical purpose is to achieve the circumferential clamping and fixation of the support 2.

[0069] In this embodiment, the alloy strip 4 is configured as a C-shaped permalloy block and is embedded in the support 2. The lower end face of the alloy strip 4 is configured to contact the support 2, and the inner periphery of the alloy strip 4 is configured to contact the support 2. The lower periphery of the alloy strip 4 is configured to contact the CT power-taking body 1, and the upper periphery of the alloy strip 4 is configured to contact the spring 5.

[0070] The alloy strip 4 forms a support connection point for the CT power receiving body 1, the support 2, and the spring 5. The alloy strip 4 realizes the connection with the CT power receiving body 1, the support 2, and the spring 5. Its technical purpose is to serve as a component for conducting magnetism to the CT power receiving body 1.

[0071] In this embodiment, the spring 5 is configured as a conical spring and is configured to be embedded in the support 2. The extended end of the spring 5 is configured to be in contact with the support 2 and the retracted end of the spring 5 is configured to be in contact with the alloy strip 4.

[0072] Spring 5 forms a support connection point for the support 2 and the alloy strip 4. Spring 5 enables the connection between the support 2 and the alloy strip 4. Its technical purpose is to serve as a component for connecting the alloy strip 4 and the support 2.

[0073] In this embodiment, the cover plate 6 is a C-shaped transparent plastic sheet and is connected to the support 2 in a covering manner. The lower end edge of the cover plate 6 is connected to the support 2 in a contact manner.

[0074] The cover plate 6 forms a support connection point for the support 2, and the cover plate 6 realizes the connection with the support 2. Its technical purpose is to be used as a component to seal the open part of the support 2.

[0075] In this embodiment, the CT power-collecting body 1, the support 2, the clamp 3, and the cover plate 6 are arranged in a bracket support manner, and the CT power-collecting body 1, the support 2, the clamp 3, and the cover plate 6 are arranged with the alloy strip 4 in a built-in magnetic strip manner. The CT power-collecting body 1, the support 2, the clamp 3, the cover plate 6, and the alloy strip 4 are arranged with the spring 5 in an elastic body fixing manner. The center line of the CT power-collecting body 1, the center line of the support 2, the center line of the clamp 3, the center line of the alloy strip 4, and the center line of the cover plate 6 are arranged on the same straight line. Multiple springs 5 ​​are arranged between the alloy strip 4 and the support 2. The annular strip 31 is respectively arranged to be connected to the foot plate part I 22 and the foot plate part II 23.

[0076] The usage method of this embodiment is as follows: When it is necessary to install the CT power take-off device on the 27.5kV transmission cable of the electrified railway, the slot I 20 and slot II 21 are rotated outward on the shaft 24, so that the slot I 20 and slot II 21 are in an expanded state. The slot I 20 and slot II 21 are placed on the 27.5kV transmission cable of the electrified railway, so that the 27.5kV transmission cable of the electrified railway is between the slot I 20 and slot II 21. The slot I 20 and slot II 21 are rotated inward on the shaft 24, so that the slot I 20 and slot II 21 are in a closed state. The inner side of the foot plate I 22 and the inner side of the foot plate II 23 act on the electrified railway 27. On a 5kV transmission cable, the outer side of the longitudinal portion of the latching part 27 contacts the end face of the groove part I 20, and the inner side of the transverse portion of the latching part 27 acts on the peripheral outer side end of the groove part I 20, thereby closing the groove part I 20 and the groove part II 21 into an annular support body. The inner side of the peripheral portion of the annular strip 31 is placed on the outer side of the foot plate part I 22 and the outer side of the foot plate part II 23. The bolt of the bolt and nut part 32 is placed into the through hole of the annular strip part 31, so that the nut of the bolt and nut part 32 rotates on the bolt of the bolt and nut part 32, so that the bolt flange of the bolt and nut part 32 acts on the peripheral side end of one of the annular strip parts 31, so that the bolt and nut part 32... The nut 2 acts on the peripheral side end of another annular strip 31, applying a closing force to foot plate I 22 and foot plate II 23. Foot plate I 22 and foot plate II 23 clamp and fix the bracket 2 on the 27.5kV transmission cable of the electrified railway, thereby installing the bracket 2 on the 27.5kV transmission cable of the electrified railway. The alloy strip 4 is placed in the groove I 20 and groove II 21, and then the CT power taking body 1 is placed between the alloy strip 4 and the groove I 20 and groove II 21, so that the peripheral inner side of the alloy strip 4 contacts the inner wall of the inner vertical part of the groove I 20 and the inner wall of the inner vertical part of the groove II 21, and so that the peripheral outer side of the shell of the CT power taking body 1 contacts the outer vertical part of the groove I 20. The lower side of the wall and the lower side of the inner wall of the outer vertical part of the groove II 21 are in contact, so that the inner side of the periphery of the CT power-taking body 1 is in contact with the lower part of the outer side of the alloy strip 4. The output cable of the CT power-taking body 1 is installed in the receiving hole I 25. The spring 5 is placed between the alloy strip 4 and the groove I 20 and the groove II 21, so that the extended end of the spring 5 is in contact with the upper side of the inner wall of the outer vertical part of the groove I 20 and the upper side of the inner wall of the outer vertical part of the groove II 21, and the contracted end of the spring 5 is in contact with the upper part of the outer side of the alloy strip 4. The cover plate 6 is installed on the open part of the groove I 20 and the open part of the groove II 21. The sealant is applied to the gap between the cover plate 6 and the open part of the groove I 20 and the open part of the groove II 21.

[0077] The third embodiment of the first utility model is described in detail with reference to the accompanying drawings. The CT power supply body 1 is configured with an inner diameter of Φ80mm, a voltage level of 5~35Kv, an operating environment of -40℃ to +85℃, and a dustproof and waterproof protection level of IP68.

[0078] In verifying this utility model, the inventors abandoned the existing technical features of using bolt fastening or welding methods for connecting CT power-taking sensors. They first proposed a technical feature of installing a platform with a protected containment range on a 27.5kV transmission cable of an electrified railway. This resulted in the first unexpected technical effect: enabling the platform to be hung on the 27.5kV transmission cable of an electrified railway, increasing the installation range and facilitating the installation of the CT power-taking body 1 and the alloy strip 4. The second unexpected technical effect was achieved: enabling the built-in installation of the CT power-taking body 1 and the alloy strip 4, improving the CT power-taking... The safety protection of the main body 1 and the alloy strip 4 resulted in a third unexpected technical effect: the clamping force applied by the clamp 3 was realized, which improved the installation strength on the 27.5kV transmission cable of the electrified railway. The fourth unexpected technical effect was achieved: the sealed area formed by the cover plate 6 was realized, which optimized the working environment of the CT power take-off body 1 and the alloy strip 4. The fifth unexpected technical effect was achieved: the elastic energy storage support by the spring 5 was realized, which improved the follow-up performance of the 27.5kV transmission cable of the electrified railway and reduced the reverse force generated on the 27.5kV transmission cable of the electrified railway.

[0079] In the second embodiment of this utility model, the support 2, clamp 3 and CT power take-up body 1 are interconnected by installing a platform with a protection and containment range on a 27.5kV transmission cable of an electrified railway.

[0080] In this embodiment, the bracket 2 is connected to the clamp 3 and the CT power supply body 1 in a closed annular support manner.

[0081] In this embodiment, a first accessory device is also included and is disposed on the support 2. The first accessory device is configured as a cover plate 6.

[0082] In this embodiment, a second accessory device is also included and is disposed between the CT power supply body 1 and the support 2. The second accessory device is an alloy strip 4.

[0083] In this embodiment, a third accessory device is also included and is disposed between the second accessory device and the support 2. The third accessory device is configured as a spring 5.

[0084] The second embodiment of this utility model is based on the first embodiment.

[0085] This utility model has the following features:

[0086] 1. Due to the design of bracket 2, clamp 3 and CT power-taking body 1, the bracket 2 and clamp 3 realize the closed ring support of CT power-taking body 1. Through CT power-taking body 1, inductive power is taken from the 27.5kV transmission cable of electrified railway. The platform with a protective containment area is installed on the 27.5kV transmission cable of electrified railway. It solves the technical problem that the connection method of CT power-taking sensor is mostly bolt fastening or welding. Therefore, it prevents damage to CT power-taking body 1 and 27.5kV transmission cable of electrified railway during installation and disassembly.

[0087] 2. Due to the design of cover plate 6, the support 2 is sealed.

[0088] 3. Due to the design of alloy strip 4, magnetic conduction is achieved for CT power-collecting body 1.

[0089] 4. Due to the design of spring 5, the alloy strip 4 is supported and fixed.

[0090] 5. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this utility model, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of the numerical range has achieved very good technical effect.

[0091] 6. Due to the design of the technical features of this utility model, and the combined effect of the individual technical features and the combination of the features, experiments have shown that the performance indicators of this utility model are at least 1.7 times that of the existing performance indicators, and it has been evaluated that it has great market value.

[0092] Other technical features that connect the support 2, clamp 3, and CT power take-up body 1 to the platform with a protected containment zone installed on the 27.5kV transmission cable of the electrified railway are also embodiments of this utility model. Furthermore, the technical features of the above embodiments can be combined in any way. In order to meet the requirements of the Patent Law, the Patent Implementation Regulations, and the Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0093] Therefore, in the technical field of CT power collection devices for 27.5kV transmission cables of electrified railways, all technical contents that include a bracket 2 installed on a 27.5kV transmission cable of electrified railways, a clamp 3 set on the bracket 2, and a CT power collection body 1 set in the bracket 2 are within the protection scope of this utility model.

Claims

1. A CT power take-off device for a 27.5kV transmission cable on an electrified railway, characterized in that: It includes a bracket (2) installed on a 27.5kV transmission cable of an electrified railway, a clamp (3) set on the bracket (2), and a CT power take-up body (1) set in the bracket (2).

2. The CT power extraction device for 27.5kV transmission cables of electrified railways according to claim 1, characterized in that: The bracket (2), clamp (3) and CT power take-up body (1) are interconnected in the manner of installing a platform with a protected containment range on the 27.5kV transmission cable of the electrified railway.

3. The CT power extraction device for 27.5kV transmission cables of electrified railways according to claim 2, characterized in that: The bracket (2) is connected to the clamp (3) and the CT power supply body (1) in a closed ring-shaped support manner.

4. The CT power extraction device for 27.5kV transmission cables of electrified railways according to claim 1, characterized in that: It also includes a first accessory device and the first accessory device is disposed on the support (2), the first accessory device being configured as a cover plate (6). Alternatively, it may also include a second accessory device disposed between the CT power-collecting body (1) and the bracket (2), the second accessory device being an alloy strip (4). Alternatively, it may also include a third accessory device and the third accessory device is disposed between the second accessory device and the support (2), the third accessory device being configured as a spring (5).

5. The CT power extraction device for a 27.5kV transmission cable of an electrified railway according to claim 4, characterized in that: in The bracket (2) is provided with a clamp (3), an alloy strip (4) and a cover plate (6), and a CT power-taking body (1) and a spring (5) are provided between the alloy strip (4) and the bracket (2).

6. The CT power extraction device for a 27.5kV transmission cable of an electrified railway according to claim 5, characterized in that: The CT power supply body (1) is set as the CT power supply and the housing of the CT power supply body (1) is set between the bracket (2) and the alloy strip (4). The outer side of the housing of the CT power supply body (1) is set to be connected to the bracket (2) in contact and the inner side of the housing of the CT power supply body (1) is set to be connected to the alloy strip (4) in contact. The output cable of the CT power supply body (1) is set to be connected to the bracket (2) in a through-type connection.

7. The CT power extraction device for 27.5kV transmission cables of electrified railways according to claim 5, characterized in that: The support (2) is configured to include a groove I (20), a groove II (21), a foot plate I (22), a foot plate II (23), a shaft (24), and a snap-fit ​​part (27). A receiving hole I (25) is provided on the outer vertical part of the groove II (21). Receiving holes (26) are provided on the foot plate I (22) and the foot plate II (23). One side of the lower end face of the groove I (20) and one side of the lower end face of the groove II (21) are respectively configured to connect with the inner end face of the foot plate I (22). The other side of the lower end face of the groove I (20) The lower end face of the groove part II (21) is respectively configured to connect with the inner end face of the foot plate part II (23), and the shaft part (24) is configured to be connected through to one end of the groove part I (20) and one end of the groove part II (21). The inner side of the longitudinal part of the snap fastener (27) is configured to connect with the end face of the groove part II (21), and one inner side of the transverse part of the snap fastener (27) is configured to connect with the outer side of the periphery of the groove part II (21). The outer side of the longitudinal part of the snap fastener (27) is configured to be connected in contact with the end face of the groove part I (20). The other inner side of the horizontal part of the snap-fit ​​part (27) is configured to be connected to the outer peripheral side of the groove part I (20) in a contact manner. The groove part I (20) and the groove part II (21) are respectively configured to be connected to the CT power-taking body (1), the alloy strip (4) and the spring (5) in a receiving manner. The inner wall of the inner vertical part of the groove part I (20) and the inner wall of the inner vertical part of the groove part II (21) are respectively configured to be connected to the alloy strip (4) in a contact manner. The lower side of the inner wall of the outer vertical part of the groove part I (20) and the lower side of the inner wall of the outer vertical part of the groove part II (21) are respectively configured to be connected to the CT power-taking body (1) in a contact manner. The upper side of the inner wall of the outer vertical part of part I (20) and the upper side of the inner wall of the outer vertical part of part II (21) are respectively configured to be connected to the spring (5). The open part of part I (20) and the open part of part II (21) are respectively configured to be connected to the cover plate (6). The foot plate part I (22) and the foot plate part II (23) are respectively configured to be connected to the clamp (3) through. The outer side of foot plate part I (22) and the outer side of foot plate part II (23) are respectively configured to be connected to the clamp (3) through. The receiving hole I (25) is configured to be connected to the output cable of the CT power supply body (1). Alternatively, groove I (20) and groove II (21) are configured as arc-shaped grooves with a U-shaped cross section, and the outlines of groove I (20) and groove II (21) are configured to be distributed along a full circumference; foot plate I (22) and foot plate II (23) are configured as C-shaped plates, and shaft (24) is configured as a rod; buckle (27) is configured as a T-shaped elastic plate, and receiving hole I (25) and receiving hole (26) are respectively configured as holes. Alternatively, the clamp (3) is configured as an annular strip (31) and a bolt and nut (32), with the end of the annular strip (31) configured to be bolted into the bolt and nut (32), the bolt flange of the bolt and nut (32) configured to be in contact with the peripheral side end of one of the annular strips (31), and the nut of the bolt and nut (32) configured to be in contact with the peripheral side end of the other annular strip (31), the annular strip (31) configured to be wrapped around the bracket (2), and the inner peripheral side of the annular strip (31) configured to be in contact with the bracket (2). Alternatively, the annular strip (31) is configured as a C-shaped strip with a through hole at the end, and the bolt of the bolt and nut part (32) is configured as a hexagonal bolt, the nut of the bolt and nut part (32) is configured as a hexagonal nut, and the through hole of the annular strip (31) is configured to be connected to the bolt of the bolt and nut part (32).

8. The CT power extraction device for 27.5kV transmission cables of electrified railways according to claim 5, characterized in that: The cover plate (6) is a C-shaped transparent plastic sheet and is designed to cover the support (2). The lower end face edge of the cover plate (6) is designed to contact the support (2). Alternatively, the alloy strip (4) is configured as a C-shaped permalloy block and is configured to be embedded in the bracket (2). The lower end face of the alloy strip (4) is configured to be in contact with the bracket (2), and the inner periphery of the alloy strip (4) is configured to be in contact with the bracket (2). The lower part of the outer periphery of the alloy strip (4) is configured to be in contact with the CT power-taking body (1), and the upper part of the outer periphery of the alloy strip (4) is configured to be in contact with the spring (5). Alternatively, the spring (5) is configured as a conical spring and is configured to be embedded in the support (2), with the extended end of the spring (5) configured to be in contact with the support (2) and the contracted end of the spring (5) configured to be in contact with the alloy strip (4).

9. The CT power take-off device for a 27.5kV transmission cable on an electrified railway according to any one of claims 1 to 8, characterized in that: The CT power-taking body (1), bracket (2), clamp (3), and cover plate (6) are arranged in a bracket support manner, and the CT power-taking body (1), bracket (2), clamp (3), and cover plate (6) are arranged in an alloy strip manner, and the CT power-taking body (1), bracket (2), clamp (3), cover plate (6), and alloy strip (4) are arranged in an elastic body fixing manner. Alternatively, the center line of the CT power-taking body (1), the center line of the bracket (2), the center line of the clamp (3), the center line of the alloy strip (4) and the center line of the cover plate (6) are set on the same straight line, multiple springs (5) are set between the alloy strip (4) and the bracket (2), and the annular strip (31) is respectively set to connect with the foot plate part I (22) and the foot plate part II (23).

10. The CT power extraction device for a 27.5kV transmission cable of an electrified railway according to claim 5, characterized in that: The CT power supply body (1) is configured with an inner diameter of Φ80mm, a voltage level of 5~35Kv, an operating environment of -40℃ to +85℃, and a dustproof and waterproof protection level of IP68.

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