Primary and secondary integrated power distribution terminal

Abstract

This invention discloses a primary and secondary integrated power distribution terminal, belonging to the field of power distribution equipment technology, and particularly relating to it. It includes a fixed frame, a terminal module fixedly connected to the fixed frame, a plurality of symmetrically distributed sliding columns fixedly connected to the terminal module, a docking plate shared by the symmetrically distributed sliding columns, a docking frame slidably connected to the symmetrically distributed sliding columns, a connecting cylinder fixedly connected to the docking plate, a clamping ring fixedly connected to the connecting cylinder, and a plurality of symmetrically distributed threaded shafts threadedly connected to the terminal module, the threaded shafts being slidably connected to the docking frame. This invention, by moving the docking frame towards the clamping rings, compresses and locks the cable between them, effectively isolating the cable swaying caused by wind and gravity, avoiding repeated bending and pulling stress on the cable insertion root, thereby ensuring the docking strength and long-term reliability of the cable and the terminal module.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, and in particular to a power distribution terminal for a primary and secondary integrated complete set of equipment. Background Technology

[0002] In 10kV overhead distribution lines, the primary and secondary integrated pole-mounted circuit breaker and its matching distribution automation terminal (FTU) are the core equipment for realizing feeder automation. The FTU is mainly responsible for real-time acquisition of electrical quantities such as three-phase voltage, current, zero-sequence voltage, and zero-sequence current of the line, monitoring the switch status, and performing functions such as remote or local opening and closing operations, fault detection and protection, and feeder automation logic processing. It achieves electrical and signal connection with the pole-mounted circuit breaker body, voltage transformer (PT), and other primary equipment through standard aviation plugs and prefabricated cables.

[0003] In practical engineering applications, FTUs are usually installed on poles of overhead lines using clamps. This leads to a common and troublesome mechanical problem in the connection between the FTU and external cables. Multiple prefabricated cables (including power lines, voltage and current signal lines, control lines, etc.) leading from the FTU connector lack effective intermediate support and fixation, and naturally sag under gravity, forming a cantilever state. At the same time, the overhead line will oscillate at low frequency due to natural wind, and the cables will continue to sway, causing the base of the connector to be subjected to repeated bending and pulling stress. After long-term operation, this dynamic load can easily cause the connector locking mechanism to loosen, the sealing ring to deform or misalign, which in turn leads to increased contact resistance or even signal interruption, seriously affecting the reliability of power distribution automation. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a primary and secondary integrated equipment power distribution terminal.

[0005] The technical solution of the present invention is: a power distribution terminal for a primary and secondary integrated equipment, comprising a fixed frame, a terminal module fixedly connected to the fixed frame, a plurality of symmetrically distributed sliding columns fixedly connected to the terminal module, a docking plate being provided together by the plurality of symmetrically distributed sliding columns, a docking frame being slidably connected together by the plurality of symmetrically distributed sliding columns, a connecting cylinder being fixedly connected to the docking plate, a clamping ring being fixedly connected to the connecting cylinder, the clamping ring and the docking frame being used together for clamping cables, and a plurality of symmetrically distributed threaded shafts being threadedly connected to the terminal module, the threaded shafts being slidably connected to the docking frame.

[0006] More preferably, the clamping ring is fixedly connected with a plurality of circumferentially distributed rubber blocks, and the docking frame is provided with placement grooves that are aligned one by one with the plurality of rubber blocks.

[0007] More preferably, the sliding column and the docking plate are slidably connected.

[0008] More preferably, the docking frame is provided with a cylindrical groove, the central axis of the cylindrical groove of the docking frame coincides with the central axis of the connecting cylinder, and the cylindrical groove of the docking frame is used to accommodate the connecting cylinder.

[0009] More preferably, the docking frame is fixedly connected to an oil reservoir in the cylindrical groove, and the top of the oil reservoir is provided with an oil injection nozzle for injecting sealing oil into itself.

[0010] More preferably, the oil storage cylinder is provided with a plurality of oil drain holes, the oil drain holes being located in the cylindrical groove of the docking frame, the oil storage cylinder being slidably connected to a sealing frame for sealing the plurality of oil drain holes, and the oil storage cylinder being provided with a locking component for limiting the sealing frame.

[0011] More preferably, the positioning assembly includes a limiting block, which is fixedly connected to the oil reservoir. The limiting block is used to limit the sealing frame. The limiting block is slidably connected to two symmetrically distributed locking blocks. Each of the two symmetrically distributed locking blocks is fixedly connected to the limiting block with a first elastic element. The two symmetrically distributed locking blocks are used together to limit the sealing frame, and the sealing frame is used to compress the two symmetrically distributed locking blocks.

[0012] More preferably, two symmetrically distributed trigger blocks are fixedly connected inside the docking plate, and the trigger blocks are used to compress the sealing frame.

[0013] More preferably, two second elastic members are symmetrically distributed between the docking frame and the docking plate.

[0014] More preferably, a drying box for absorbing moisture is detachably connected inside the docking plate.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention moves the docking frame toward the clamping ring, thereby squeezing and locking the cable between the two, which can effectively isolate the cable swing caused by wind and gravity, and avoid the root of the connector from being subjected to repeated bending and pulling stress, thereby ensuring the docking strength and long-term reliability of the cable and the terminal module.

[0016] 2. By injecting sealing oil from the oil reservoir into the cylindrical groove of the docking frame in a self-triggered manner, the sealing oil submerges the bends of the cables, thereby forming a seamless seal for the terminal module control panel. This directly prevents external moisture from entering the terminal module, fundamentally protecting electronic components from corrosion and short-circuit risks, and significantly improving long-term operational reliability.

[0017] 3. The second elastic element supports the docking plate, creating space between the docking frame and the docking plate. This facilitates cable insertion by the operator, improving assembly convenience and reliability. Simultaneously, the second elastic element first pushes the docking plate into the terminal module to seal the control panel, and then the docking frame continues to move to complete the cable clamping. This achieves the sequential action of "sealing first, then clamping," reducing the probability of cables accumulating and bending between the module and the docking plate, and reducing the frequency of manual adjustments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the rubber block and placement groove of the present invention; Figure 3 This is a three-dimensional structural diagram of the terminal module and the docking plate of the present invention; Figure 4 This is a three-dimensional structural diagram of the oil storage cylinder of the present invention; Figure 5 This is a three-dimensional structural diagram of the limiting block of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the oil storage tank of the present invention; Figure 7 This is a three-dimensional structural diagram of the card block of the present invention; Figure 8 This is a three-dimensional structural diagram of the trigger block of the present invention.

[0019] Component names and serial numbers in the diagram: 1-Fixed frame, 2-Terminal module, 3-Sliding column, 4-Dating frame, 5-Dating plate, 6-Connecting cylinder, 7-Clamping ring, 8-Threaded shaft, 201-Rubber pressure block, 202-Placement groove, 301-Oil reservoir, 302-Oil nozzle, 303-Oil drain hole, 304-Sealing frame, 305-Limiting block, 306-Clamping block, 307-First elastic element, 308-Trigger block, 309-Second elastic element, 310-Drying box. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] In practical applications, FTUs are installed on poles using clamps. The multiple prefabricated cables (including power, signal, and control lines) extending from their aerial connectors droop naturally due to a lack of effective support, forming a cantilever. Affected by the wind-induced swaying of overhead lines, the cables continuously sway, causing the base of the aerial connectors to be subjected to repeated bending and pulling stresses. Long-term operation can easily lead to loosening of the locking mechanism, deformation or misalignment of the sealing rings, resulting in increased contact resistance or even signal interruption, seriously threatening the reliability of the power distribution automation system. Example 1

[0022] This embodiment provides a primary and secondary integrated equipment power distribution terminal to ensure the connection strength of cables.

[0023] like Figures 1-4 As shown, the device includes a fixed frame 1, which serves as the main support and is used for fixed connection with the utility pole. A terminal module 2 is fixedly connected to the fixed frame 1. Two symmetrically distributed sliding columns 3 are fixedly connected to the terminal module 2. The two symmetrically distributed sliding columns 3 are jointly provided with a docking plate 5. In this embodiment, the connection between the two sliding columns 3 and the docking plate 5 is a fixed connection, but this is limited to this embodiment. The two symmetrically distributed sliding columns 3 are jointly limited and slidably connected to a docking frame 4. A support platform is provided at the bottom of each sliding column 3. Initially, the docking frame 4 is located on the support platform at the bottom of the two sliding columns 3. A through hole exists in the middle of the docking plate 5. A connecting cylinder 6 is fixedly connected to the lower part of the docking plate 5. The central axis of the connecting cylinder 6 coincides with the central axis of the through hole in the middle of the docking plate 5, and the inner diameter of the through hole in the docking plate 5 is the same as the inner diameter of the connecting cylinder 6. Similarly, the cable passes through the connecting cylinder 6 and the through hole in the middle of the docking plate 5 to dock with the terminal module 2. The connecting cylinder 6 is fixedly connected to a clamping ring 7. The clamping ring 7 and the docking frame 4 are used together to clamp the cable. The terminal module 2 is threadedly connected to two symmetrically distributed threaded shafts 8. The threaded shafts 8 are slidably connected to the docking frame 4. The bottom of the threaded shafts 8 is provided with a support platform. In the initial state, the docking frame 4 is located on the support platform at the bottom of the two threaded shafts 8. Several rubber pressure blocks 201 are fixedly connected to the clamping ring 7 and distributed circumferentially. The docking frame 4 is provided with a placement groove 202 that is aligned with the rubber pressure blocks 201. The cable is placed in the placement groove 202 to limit its movement and prevent the cable from bunching up. At the same time, the rubber pressure blocks 201 squeeze and fix the cable, reducing the probability of cable damage.

[0024] Working principle: When installing this device on a utility pole, the operator uses clamps to vertically install the mounting bracket 1 onto the pole, ensuring the docking panel of the terminal module 2 faces downwards. The operator then passes the cable to be docked with the terminal module 2 through the connecting cylinder 6 and the docking plate 5. After the cable is connected to the terminal module 2, the operator rotates the two symmetrically distributed threaded shafts 8, causing them to move upwards along the terminal module 2. The two threaded shafts 8 together drive the docking bracket 4 to move upwards synchronously along the two sliding posts 3. This continues until the docking bracket 4 is about to contact the clamping ring 7. At this point, the operator stops rotating the two threaded shafts 8 and inserts the cable into the docking bracket 4. After placement in slot 202, continue rotating the two threaded shafts 8 to make the docking frame 4 move the cable in slot 202 upward synchronously until the cable in slot 202 is brought into contact with the corresponding rubber pressure block 201 on the clamping ring 7. Then continue rotating the two symmetrically distributed threaded shafts 8 to make the docking frame 4 continue to move toward the clamping ring 7, thereby squeezing and locking the cable in slot 202. Then stop rotating the two symmetrically distributed threaded shafts 8, and squeeze and fix the cable through the docking plate 5 and the clamping ring 7 to prevent the cable swing from affecting the docking strength between the cable and the terminal module 2. Example 2

[0025] This embodiment provides a primary and secondary integrated equipment power distribution terminal, which is a further improvement on embodiment 1.

[0026] like Figures 3-6As shown, the sliding column 3 and the docking plate 5 are slidably connected. The docking plate 5 can be inserted into the terminal module 2 to form a seal. A rubber ring is provided at the contact position between the docking plate 5 and the terminal module 2. The docking frame 4 is provided with a cylindrical groove. The central axis of the cylindrical groove of the docking frame 4 coincides with the central axis of the connecting cylinder 6. The cylindrical groove of the docking frame 4 is used to accommodate the connecting cylinder 6. After the docking frame 4 and the clamping ring 7 have completed the fixing of the cable, the bottom of the connecting cylinder 6 enters the cylindrical groove of the docking frame 4 but does not contact the bottom of the cylindrical groove of the docking frame 4. The connecting cylinder 6 presses down on the cable in the cylindrical groove of the docking frame 4 to bend it. An oil reservoir 301 is fixedly connected to the docking frame 4 in the cylindrical groove. The top of the oil reservoir 301 is provided with an oil injection nozzle 302 for injecting sealing oil into itself. The oil nozzle 302 is a one-way injection structure (the specific structure is not shown in the figure). The oil reservoir 301 is provided with several oil drain holes 303, which are located in the cylindrical groove of the docking frame 4. The sealing oil in the oil reservoir 301 can enter the cylindrical groove of the docking frame 4 along the several oil drain holes 303, so that the sealing oil submerges the cable located in the cylindrical groove of the docking frame 4. In this way, the sealing oil, together with the docking plate 5, the connecting cylinder 6 and the docking frame 4, forms a dead-angle seal for the terminal module 2 to prevent the entry of external moisture. The oil reservoir 301 is slidably connected to a sealing frame 304 for sealing the several oil drain holes 303. In the initial state, the sealing frame 304 is in a sealing state for the several oil drain holes 303. The oil reservoir 301 is provided with a locking component for limiting the sealing frame 304.

[0027] like Figure 5 , Figure 7 and Figure 8As shown, the locking assembly includes a limiting block 305, which is fixedly connected to the oil reservoir 301. The limiting block 305 is a T-shaped block and is used to limit the upward movement of the sealing frame 304, preventing it from moving upward along the oil reservoir 301. Two symmetrically distributed locking blocks 306 are slidably connected to the limiting block 305. Each locking block 306 has an inclined surface. A first elastic element 307, which is a spring, is fixedly connected between the two symmetrically distributed locking blocks 306 and the limiting block 305. Initially, the spring is in an uncompressed state. The two symmetrically distributed locking blocks 306 together limit the sealing frame 304, which is used to compress the sealing frame. Two inclined surfaces of the two locking blocks 306 are distributed so that the locking blocks 306 slide into the limiting block 305. Then the sealing frame 304 can move downward along the oil reservoir 301. Two symmetrically distributed trigger blocks 308 are fixedly connected inside the docking plate 5. The trigger blocks 308 are used to squeeze the sealing frame 304 to move downward along the oil reservoir 301. The two trigger blocks 308 and the limiting block 305 are completely misaligned to prevent the trigger blocks 308 from contacting the limiting block 305, which would prevent the sealing frame 304 from releasing the oil drain hole 303. Two symmetrically distributed second elastic elements 309 are provided between the docking frame 4 and the docking plate 5. The second elastic elements 309 are springs and are used to support the docking plate 5.

[0028] Working principle: During the process of the two symmetrically distributed threaded shafts 8, i.e., the process of compressing and fixing the cable, the two threaded shafts 8 synchronously drive the docking plate 5 to move through the docking frame 4 and the second elastic element 309. This causes the docking plate 5 to slide along the two symmetrically distributed sliding columns 3 until the docking plate 5 is inserted into the terminal module 2, thus sealing the control panel of the terminal module 2. At this point, the docking plate 5 can no longer move upward. The two symmetrically distributed threaded shafts 8 drive the docking frame 4 to continue moving upward, while the second elastic element 309 is compressed. This continues until the docking frame 4 and the clamping ring 7 complete the compression of the cable. The docking plate 5 is fixed by the second elastic element 309, which supports the docking frame 4 and the docking plate 5, so that the staff can operate the docking of the cable and the terminal module 2. At the same time, the second elastic element 309 pushes the docking plate 5 to first block the terminal module 2 before clamping the cable, avoiding the phenomenon of the cable accumulating and bending repeatedly between the terminal module 2 and the docking plate 5, thereby reducing the frequency of cable adjustment by the staff. A drying box 310 for absorbing moisture is detachably connected inside the docking plate 5. The drying box 310 is used to absorb the moisture in the air between the terminal module 2 and the docking plate 5 after the device is installed.

[0029] During the upward movement of the aforementioned docking frame 4, the docking frame 4 will drive the oil reservoir 301 inside it to move synchronously. The oil reservoir 301 gradually enters the connecting cylinder 6, so that the cable is located between the oil reservoir 301 and the connecting cylinder 6. The lower part of the connecting cylinder 6 will push the cable to bend. As the oil reservoir 301 rises inside the connecting cylinder 6, the oil reservoir 301 drives the sealing frame 304 above it to move synchronously. This continues until the sealing frame 304 contacts the two symmetrically distributed trigger blocks 308. The docking frame 4 continues to drive the oil reservoir 301 to move upward. The two trigger blocks 308 push the sealing frame 304 to squeeze the two symmetrically distributed locking blocks 306. The two locking blocks 306 are controlled by the sealing frame 304. The extrusion force of 04 slides inward along the limiting block 305, while the first elastic element 307 is compressed. When the locking block 306 is completely slid into the limiting block 305, the sealing frame 304 slides downward along the oil storage cylinder 301 to release the sealing of several oil drain holes 303. At this moment, the cable is completed and the threaded shaft 8 stops rotating, so that the sealing oil in the oil storage cylinder 301 is discharged into the cylindrical groove of the docking frame 4 along the oil drain hole 303. As the sealing oil gradually enters the cylindrical groove of the docking frame 4, the liquid level of the sealing oil gradually rises above the bottom of the connecting cylinder 6 and submerges the bending part of the cable, thereby completely sealing the control panel of the terminal module 2 and preventing external moisture from entering the terminal module 2.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A primary and secondary integrated equipment power distribution terminal, comprising a fixing frame (1), wherein a terminal module (2) is fixedly connected to the fixing frame (1), characterized in that, The terminal module (2) is fixedly connected to a plurality of symmetrically distributed sliding columns (3), and the plurality of symmetrically distributed sliding columns (3) are provided with a docking plate (5). The plurality of symmetrically distributed sliding columns (3) are connected to a docking frame (4) for limiting sliding. The docking plate (5) is fixedly connected to a connecting cylinder (6), and the connecting cylinder (6) is fixedly connected to a clamping ring (7). The clamping ring (7) and the docking frame (4) are used together to clamp the cable. The terminal module (2) is threadedly connected to a plurality of symmetrically distributed threaded shafts (8), and the threaded shafts (8) are limited and slidably connected to the docking frame (4).

2. The power distribution terminal of the integrated primary and secondary equipment according to claim 1, characterized in that, The clamping ring (7) is fixedly connected with a plurality of circumferentially distributed rubber blocks (201), and the docking frame (4) is provided with placement grooves (202) that are aligned one by one with the plurality of rubber blocks (201).

3. The power distribution terminal of the integrated primary and secondary equipment according to claim 1, characterized in that, The sliding column (3) and the docking plate (5) are slidably connected.

4. The power distribution terminal of a primary and secondary integrated complete set of equipment according to claim 1, characterized in that, The docking frame (4) is provided with a cylindrical groove, the central axis of the cylindrical groove of the docking frame (4) coincides with the central axis of the connecting cylinder (6), and the cylindrical groove of the docking frame (4) is used to accommodate the connecting cylinder (6).

5. The power distribution terminal of a primary and secondary integrated complete set of equipment according to claim 4, characterized in that, The docking frame (4) is fixedly connected to an oil storage cylinder (301) in a cylindrical groove. The top of the oil storage cylinder (301) is provided with an oil injection nozzle (302) for injecting sealing oil into itself.

6. The power distribution terminal of a primary and secondary integrated complete set of equipment according to claim 5, characterized in that, The oil storage cylinder (301) is provided with a plurality of oil drain holes (303), the oil drain holes (303) are located in the cylindrical groove of the docking frame (4), the oil storage cylinder (301) is slidably connected to a sealing frame (304) for sealing a plurality of the oil drain holes (303), and the oil storage cylinder (301) is provided with a locking component for limiting the sealing frame (304).

7. The power distribution terminal of a primary and secondary integrated complete set of equipment according to claim 6, characterized in that, The positioning assembly includes a limiting block (305), which is fixedly connected to the oil reservoir (301). The limiting block (305) is used to limit the sealing frame (304). The limiting block (305) is slidably connected to two symmetrically distributed locking blocks (306). A first elastic element (307) is fixedly connected between the two symmetrically distributed locking blocks (306) and the limiting block (305). The two symmetrically distributed locking blocks (306) are used together to limit the sealing frame (304). The sealing frame (304) is used to squeeze the two symmetrically distributed locking blocks (306).

8. The power distribution terminal of a primary and secondary integrated complete set of equipment according to claim 7, characterized in that, The docking plate (5) has two symmetrically distributed trigger blocks (308) fixedly connected inside, and the trigger blocks (308) are used to squeeze the sealing frame (304).

9. A primary and secondary integrated complete set of equipment power distribution terminal according to claim 8, characterized in that, Two second elastic elements (309) are symmetrically distributed between the docking frame (4) and the docking plate (5).

10. A primary and secondary integrated complete set of equipment power distribution terminal according to claim 8, characterized in that, A drying box (310) for absorbing moisture is detachably connected inside the docking plate (5).

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