A high voltage connection device for a power transformer
By combining the pressure plate, buckle plate, mounting sleeve and mounting rod, along with the transition strip and locking sleeve, the problems of cumbersome operation and poor protection of existing high-voltage connection devices are solved, achieving stability and sealing of cable connections and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SANYA ZHICHEN POWER DESIGN SERVICE CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-07
AI Technical Summary
Existing high-voltage connection devices are cumbersome to operate, inconvenient to connect, have poor protection capabilities, and affect service life.
By using a combination of pressure plate, buckle plate, mounting sleeve and mounting rod, along with transition strip, connecting block and locking sleeve, a double pressing effect is achieved, and the sealing performance is improved by the protective sleeve.
It improves the stability and sealing of cable connections, prevents the copper wires from loosening, enhances waterproof and dustproof performance, and extends service life.
Smart Images
Figure CN224472309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of power transformer installation tools, and in particular to a high-voltage connection device for power transformers. Background Technology
[0002] A power transformer is a static electrical device used to convert an alternating current (AC) voltage (or current) of a certain value into one or more different values of voltage (or current) at the same frequency. It is a static device with two or more windings that, in order to transmit electrical energy, converts the AC voltage and current of one system into the voltage and current of another system through electromagnetic induction at the same frequency. Typically, these currents and voltages are of different values. When a power transformer is in use, it is connected to other cables. This requires cables to pass through high-voltage pipes and connect to the transformer. High-voltage connection devices are needed to fix the cables to the high-voltage pipes.
[0003] However, the connecting cables of the high-voltage connection devices currently on the market are inconvenient and cumbersome to operate, which increases the labor intensity of the workers. In addition, the existing high-voltage connection devices have poor self-protection capabilities, making them easy to be damaged and thus affecting their service life. Utility Model Content
[0004] The purpose of this utility model is to provide a high-voltage connection device for power transformers in order to solve the above-mentioned problems.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A high-voltage connection device for a power transformer includes an mounting cylinder and a wire clamping assembly. The mounting cylinder is movably connected to the wire clamping assembly. The wire clamping assembly includes a wire clamping plate, a snap plate, a mounting sleeve, a mounting rod, and a spring. There are two wire clamping plates that are rotatably connected. The mounting shaft of the wire clamping plate is fixedly connected to the mounting rod. The mounting rod extends into the inner cavity of the mounting sleeve and is movably connected to it. The bottom end of the mounting sleeve is Ω-shaped to stabilize the two wire clamping plates. The top end of the mounting sleeve extends through the mounting cylinder and is fixedly connected to the snap plate. A spring is installed in the inner cavity of the mounting sleeve.
[0007] As a further description of the above technical solution:
[0008] The mounting cylinder has external threads at both ends connected to pressure sleeves, which are used to press the buckle plate.
[0009] As a further description of the above technical solution:
[0010] Multiple transition strips are distributed at both ends of the mounting cylinder, and each end of the transition strip is provided with a connecting block. The connecting block has an external thread, and a locking sleeve is connected to the external thread of the connecting block.
[0011] As a further description of the above technical solution:
[0012] The locking sleeve is fitted with a protective sleeve, and the inner surface of the protective sleeve is in contact with the outer surface of the end of the mounting cylinder.
[0013] As a further description of the above technical solution:
[0014] An observation port is provided inside the top of the mounting cylinder. The bottom surface of the pressure plate is in contact with the outer surface of the mounting cylinder and covers the observation port. The mating ends of the two pressure sleeves are sealed and fitted together.
[0015] As a further description of the above technical solution:
[0016] The end of the mounting cylinder is provided with an external thread section that matches the pressure sleeve.
[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0018] In this invention, the cooperation of the pressure plate, buckle plate, mounting sleeve, mounting rod, and pressure sleeve achieves a double clamping effect, improving the connection stability of the copper wire at the cable connection end. Simultaneously, the cooperation of the transition strip, connecting block, and locking sleeve ensures a stable connection with the cable shell, allowing the entire assembly to be connected to the cable shell and preventing loosening of the cable copper wire connection end under gravity. Furthermore, the buckle plate, pressure sleeve, and protective sleeve further enhance the sealing effect at each joint, improving the waterproof and dustproof performance of the connection device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure without the pressed wire in this utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of the mounting cylinder and the wire pressing assembly during the wire pressing process in this utility model;
[0022] Figure 4 This is a schematic diagram of the internal structure of the mounting cylinder and the wire pressing assembly when the wire is not pressed in.
[0023] Figure 5 This is a sectional perspective view of the present invention.
[0024] Legend: 1. Mounting cylinder; 2. Pressure plate; 3. Observation port; 4. Buckle plate; 5. Mounting sleeve; 6. Mounting rod; 7. Pressure sleeve; 8. Transition strip; 9. Connecting block; 10. Locking sleeve; 11. Protective sleeve; 12. Spring. Detailed Implementation
[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] Example 1:
[0027] like Figure 1-5 As shown, a high-voltage connection device for a power transformer includes an mounting cylinder 1 and a wire clamping assembly. The mounting cylinder 1 is movably connected to the wire clamping assembly. The wire clamping assembly includes a wire clamping plate 2, a snap plate 4, a mounting sleeve 5, a mounting rod 6, and a spring 12. There are two wire clamping plates 2, which are rotatably connected. The mounting shaft of the wire clamping plate 2 is fixedly connected to the mounting rod 6. The mounting rod 6 extends into the inner cavity of the mounting sleeve 5 and is movably connected to it. The bottom end of the mounting sleeve 5 is Ω-shaped to stabilize the two wire clamping plates 2. The top end of the mounting sleeve 5 extends through the mounting cylinder 1 and is fixedly connected to the snap plate 4. The spring 12 is installed in the inner cavity of the mounting sleeve 5. Specifically, the top end of the mounting rod 6 is fixedly connected to one end of the spring 12, and the other end of the spring 12 is fixedly connected to the inner cavity of the mounting sleeve 5. The mounting cylinder 1 has external threads at both ends, with pressure sleeves 7 for pressing the buckle plate 4. Multiple transition strips 8 are distributed at both ends of the mounting cylinder 1, with connecting blocks 9 at each end. Each connecting block 9 has an external thread, and a locking sleeve 10 is connected to the external thread. The combination of the pressure plate 2, buckle plate 4, mounting sleeve 5, mounting rod 6, and pressure sleeve 7 achieves a double-pressing effect, improving the connection stability of the copper wire at the cable connection end. Simultaneously, the combination of the transition strips 8, connecting blocks 9, and locking sleeve 10 ensures a stable connection with the cable shell, allowing the entire assembly to be connected to the cable shell and preventing loosening of the cable copper wire connection end under gravity.
[0028] Example 2:
[0029] The technical solution is basically the same as that in Embodiment 1, except that, as Figure 1-5 As shown, the locking sleeve 10 is fixedly fitted with a protective sleeve 11. The inner surface of the protective sleeve 11 is in contact with the outer surface of the end of the mounting cylinder 1. An observation port 3 is opened in the top of the mounting cylinder 1. The bottom surface of the pressure plate 2 is in contact with the outer surface of the mounting cylinder 1 and covers the observation port 3. The mating ends of the two pressure sleeves 7 are sealed and fitted. An external thread section matching the pressure sleeve 7 is opened on the outer side of the end of the mounting cylinder 1. The fastening plate 4, the pressure sleeve 7 and the protective sleeve 11 further improve the sealing effect at each mating point and improve the waterproof and dustproof effect of the connecting device.
[0030] Working principle: In use, the two cables to be connected are respectively inserted into the two locking sleeves 10, and the copper wires at the ends of the two cables are wrapped together and placed in the mounting cylinder 1. Then, the buckle plate 4 is pressed down, so that the wire clamping plate 2 presses the wrapped copper wire segments of the cable tightly. At the same time, one clamping sleeve 7 is rotated so that this clamping sleeve 7 presses on the buckle plate 4. Then, the other clamping sleeve 7 is rotated so that the two clamping sleeves 7 press the buckle plate 4 tightly and are joined together. At this time, the transition strip 8 rests on the cable shell. Then, the protective sleeve 11 is moved and rotated so that the locking sleeve 10 is screwed on the connecting block 9, so that the connecting block 9 tightly wraps the cable shell. At the same time, the inner surface of the protective sleeve 11 is in contact with the outer surface of the mounting cylinder 1, completing the connection of the high-voltage cable and realizing the stability of the cable connection and the dustproof and waterproof effect.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A high-voltage connection device for a power transformer, characterized in that, The device includes an installation cylinder (1) and a wire pressing assembly. The installation cylinder (1) is movably connected to the wire pressing assembly. The wire pressing assembly includes a wire pressing plate (2), a buckle plate (4), an installation sleeve (5), an installation rod (6), and a spring (12). There are two wire pressing plates (2) that are rotatably connected. The installation shaft of the wire pressing plate (2) is fixedly connected to the installation rod (6). The installation rod (6) extends into the inner cavity of the installation sleeve (5) and is movably connected to it. The bottom end of the installation sleeve (5) is Ω-shaped and is used to press the two wire pressing plates (2) firmly. The top end of the installation sleeve (5) extends through the installation cylinder (1) and is fixedly connected to the buckle plate (4). The spring (12) is installed in the inner cavity of the installation sleeve (5).
2. The high-voltage connection device for a power transformer according to claim 1, characterized in that, The mounting cylinder (1) has external threads connecting the two ends to pressure sleeves (7), which are used to press the buckle plate (4).
3. The high-voltage connection device for a power transformer according to claim 1, characterized in that, Multiple transition strips (8) are distributed at both ends of the mounting cylinder (1). Each end of the transition strip (8) is provided with a connecting block (9). The connecting block (9) is provided with an external thread, and a locking sleeve (10) is connected to the external thread of the connecting block (9).
4. The high-voltage connection device for a power transformer according to claim 3, characterized in that, The locking sleeve (10) is fixedly fitted with a protective sleeve (11), and the inner surface of the protective sleeve (11) is in contact with the outer surface of the end of the mounting cylinder (1).
5. A high-voltage connection device for a power transformer according to claim 2, characterized in that, An observation port (3) is provided inside the top of the mounting cylinder (1). The bottom surface of the pressure plate (2) is in contact with the outer surface of the mounting cylinder (1) and covers the observation port (3). The mating ends of the two pressure sleeves (7) are sealed and fitted together.
6. A high-voltage connection device for a power transformer according to claim 2, characterized in that, The mounting cylinder (1) has an external thread section at its end that matches the pressure sleeve (7).