New energy power station network access test cable switching device

Abstract

The invention relates to a new energy power station network access test cable switching device in the technical field of new energy grid connection. The new energy power station network access test cable switching device comprises a supporting plate, an insulating supporting column vertically installed on the upper plate face of the supporting plate and a cable switching board arranged on the top of the insulating supporting column. One end of the cable switching board is provided with a wiring hole used for connecting test equipment, and the other end is provided with a switching assembly connected with a power station cable. According to the invention, convenience is improved, that is, the design of the switching assembly enables an operator to complete cable connection more conveniently, time and difficulty of on-site debugging are reduced, and working efficiency is improved; meanwhile, due to the design of a conical part and an inverted tooth piece in the switching assembly, the cable can be effectively prevented from loosening, and the safety and reliability of connection are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy grid connection, and in particular to a cable switching device for testing grid connection of a new energy power station. Background Art

[0002] As a renewable energy source that can be used permanently, wind energy and solar energy have received more and more attention. Due to weather reasons, renewable energy power generation has a certain degree of randomness, especially the uncontrollability and difficulty in accurately predicting wind speed in wind power generation, which makes power generation highly random. Due to the existence of randomness, when the electric field outlet bus is reduced to a certain level, the generator will show a different operating state from the steady state or even run off the grid.

[0003] In order to ensure that the energy power station does not go offline, it is necessary to use test equipment for detection. The detection equipment needs to be connected in series to the new energy power station. However, the on-site test environments are different. The cables in the power station are of different lengths and angles. The traditional cable connection is inconvenient, and there are even safety hazards such as insufficient wiring safety distance resulting in loose cable connections and other unsatisfactory safety hazards.

[0004] Therefore, we designed a cable switching device for testing the access of new energy power stations to the grid. Summary of the invention

[0005] In order to overcome the deficiencies in the background technology, the present invention discloses a cable switching device for network access testing of a new energy power station.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A cable adapter device for network access testing of a new energy power station comprises a support plate, an insulating support vertically mounted on the support plate, and a cable adapter plate arranged on the top of the insulating support plate; one end of the cable adapter plate has a wiring hole for connecting a test device, and the other end is provided with an adapter assembly connected to a power station cable; The switching assembly comprises: A connecting column, one end of which is connected to the cable adapter plate, and the other end of which is fixed with an external threaded sleeve, wherein the external threaded sleeve has a tapered portion extending to the outside of the connecting column, and the tapered portion is provided with a plurality of first reduced diameter grooves along its circumference; The internal thread sleeve is threadably matched with the external thread sleeve so that the tapered portion is squeezed by rotating the internal thread sleeve to produce axial movement, so that the tapered portion shrinks in diameter and tightly holds the power station cable.

[0007] Preferably, the adapter assembly further comprises an inverted tooth piece arranged on the inner wall of the conical portion to prevent the cable from loosening; an extrusion spring is arranged between the inner end of the inverted tooth piece and the inner wall of the conical portion to assist in fixing the cable.

[0008] Preferably, a mounting hole is provided in the middle of the cable adapter plate, and is connected to the top of the insulating support post by bolts.

[0009] Preferably, the mounting hole is a waist-shaped hole arranged along the length direction of the cable adapter, allowing the position of the adapter assembly to be adjusted by adjusting the positional relationship between the bolt and the mounting hole, thereby adapting to power station cables of different lengths.

[0010] Preferably, the adapter assembly is connected to one end of the cable adapter plate via a universal hinge assembly.

[0011] Preferably, the universal hinge assembly comprises: A fixing column, one end of which is connected to the cable adapter plate, and the other end of which is provided with a large ball head; the large ball head has a ball socket hole inside, and a plurality of second reduced diameter grooves are evenly spaced along the circumference of the fixing column; wherein, a small ball head embedded in the ball socket hole is provided at one end of the connecting column away from the external threaded sleeve, so that the adapter assembly can adapt to power station cables of different angles; The clamping nut is screwed to the fixed column body so that the clamping nut can be rotated to produce axial movement and squeeze the large ball head, causing the large ball head to deform inward and hold the small ball head tightly, ensuring that the position of the small ball head is fixed and the stability of the adapter assembly is guaranteed.

[0012] Preferably, the second reduced diameter groove cavity is provided with a flexible friction plate, and during the inward deformation of the large ball head, the flexible friction plate is squeezed, and the flexible friction plate deforms inward to squeeze the small ball head, further ensuring that the position of the small ball head is fixed.

[0013] Preferably, there is a deformation filling space between the inner side of the flexible friction plate and the wall of the second reduced diameter groove. When the flexible friction plate is squeezed and deformed, the deformation of its inner side will squeeze the small ball head to ensure that the position is fixed. At the same time, the deformed part will fill into the deformation filling space, which will not affect the conductivity between the small ball head and the large ball head.

[0014] Preferably, the universal hinge assembly adopts a double-axis hinge structure with a locking function.

[0015] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: 1. Improved convenience: The design of the adapter assembly enables operators to complete the cable connection work more conveniently, reducing the time and difficulty of on-site debugging and improving work efficiency; at the same time, the design of the tapered part and the inverted tooth piece in the adapter assembly can effectively prevent the cable from loosening, ensuring the safety and reliability of the connection; 2. Enhanced adaptability: It can adapt to power station cables of different lengths and angles by adjusting the position of the mounting holes and using universal hinge components, which improves the adaptability of the on-site test environment; at the same time, by applying pressure to the large ball head through the compression nut, the small ball head is fixed in a specific position, ensuring the angular stability of the adapter component, and maintaining a stable connection even in the face of tension in different directions 3. Optimize electrical conductivity: The design of the internal structure of the adapter assembly and the universal hinge assembly, such as the extrusion spring and the flexible friction plate, can ensure good electrical conductivity while ensuring mechanical stability, thus not affecting the quality of power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the assembly structure of the cable adapter plate, the adapter assembly and the universal hinge assembly in the present invention; Figure 3 It is a cross-sectional view of the assembly structure of the transfer assembly and the universal hinge assembly in the present invention; Figure 4 Another cross-sectional view of the assembly structure of the transfer assembly and the universal hinge assembly in the present invention; Figure 5 It is a schematic diagram of the assembly structure of the fixing column, the large ball head and the flexible friction plate in the present invention.

[0017] In the figure: 1. support plate; 2. insulating pillar; 3. cable adapter plate; 31. mounting hole; 32. wiring hole; 4. adapter assembly; 41. connecting column; 42. small ball head; 43. external threaded sleeve; 431. tapered portion; 432. first reduced diameter groove; 44. internal threaded sleeve; 45. inverted gear plate; 46. extrusion spring; 5. universal hinge assembly; 51. fixing column; 52. large ball head; 521. ball socket hole; 522. second reduced diameter groove; 53. tightening nut; 54. flexible friction plate; 55. deformation filling space. DETAILED DESCRIPTION

[0018] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0019] Embodiment 1, in combination with the attached Figure 1 A cable adapter for testing a new energy power station grid connection includes a support plate 1, an insulating support 2 vertically arranged on the upper surface of the support plate 1, and a cable adapter plate 3; the insulating support 2 can use an insulator in the prior art as needed. The insulation level of the insulator is reasonably selected according to the output voltage of the power station, and is not specifically limited here.

[0020] Specifically, the cable adapter plate 3 has a mounting hole 31 in the middle part which is connected to the insulating support 2. The cable adapter plate 3 is connected to the upper end of the insulating support 2 by means of bolts cooperating with the mounting hole 31. One end of the cable adapter plate 3 has a wiring hole 32 for connecting the test equipment, and the other end has a adapter assembly 4 connected to the power station cable.

[0021] In a possible implementation, Figure 2-4 In order to facilitate the connection with the power station cable, the adapter component 4 includes a connecting column 41, one end of the connecting column 41 is correspondingly connected to the cable adapter plate 3, and the other end is fixedly sleeved with an external threaded sleeve 43, and the external threaded sleeve 43 has a tapered portion 431 extending to the outside of the connecting column 41; this arrangement can facilitate the tapered portion 431 to be sleeved on the periphery of the power station cable.

[0022] As required, a U-shaped hole is opened at one end of the connecting column 41 corresponding to the cable adapter plate 3, and the cable adapter plate 3 is matched and plugged into the U-shaped hole and fixedly connected by bolts.

[0023] The wall thickness of the tapered portion 431 gradually increases from the inside to the outside, and the tapered portion 431 is provided with a plurality of first diameter-reducing grooves 432 evenly spaced along its circumference; the outer threaded sleeve 43 is threadedly matched with the inner threaded sleeve 44; such a configuration can produce axial movement through the rotation of the inner threaded sleeve 44 to squeeze the tapered portion 431, so that the tapered portion 431 performs a diameter-reducing action to hold the cable tightly.

[0024] Furthermore, the inner wall of each branch of the conical portion 431 is provided with an inverted tooth structure, so that the conical portion 431 can be effectively prevented from falling off after being sleeved on the power station cable.

[0025] As required, the inverted tooth structure includes an inverted tooth piece 45 whose outer end is fixed to the inner wall of the conical part 431 and whose inner end is at an angle with the inner wall of the conical part 431. Further, a compression spring 46 is installed on the inner wall of the conical part 431 to abut against the outer surface of the inner end of the inverted tooth piece 45.

[0026] During the transfer, firstly, the tapered portion 431 of the external threaded sleeve 43 is sleeved on the power station cable until the outer end of the power station cable contacts the connecting column 41. During this process, the inverted tooth piece 45 contacts the cable body of the power station cable, which can effectively prevent the power station cable from moving outward relative to the external threaded sleeve 43 and getting loose. Then, the internal threaded sleeve 44 is rotated to make the internal threaded sleeve 44 move toward the tapered portion 431 and squeeze the tapered portion 431. The tapered portion 431 is compressed to reduce its diameter, thereby hugging the power station cable, achieving the fixing operation with the power station cable, and ensuring the conductor performance of both.

[0027] Embodiment 2, combined with the attached Figure 2 A cable adapter device for testing the access to the grid of a new energy power station is different from the first embodiment in that, on the basis of the first embodiment, in order to better adapt to power station cables of different lengths, the mounting hole 31 is a waist-shaped hole arranged along the length direction of the cable adapter plate 3, and is fixed and adjusted by bolts and insulating pillars 2. In this way, the position of the adapter component 4 can be adjusted by adjusting the positional relationship between the bolt and the mounting hole 31 to ensure that it adapts to the current length of the power station cable.

[0028] Embodiment 3, in combination with the attached Figure 3-5 A cable adapter device for testing the access to the grid of a new energy power station is disclosed. Based on the first or second embodiment, in order to better adapt to power station cables with different angles, an adapter component 4 is connected to one end of a cable adapter plate 3 through a universal hinge component 5.

[0029] In a possible embodiment, the universal hinge assembly 5 includes a fixed column 51, a large ball head 52 is provided at one end of the fixed column 51, a ball socket hole 521 with an open outer end is provided inside the large ball head 52, and the other end of the fixed column 51 is fixedly connected to the end of the cable adapter plate 3; the end of the connecting column 41 facing away from the external threaded sleeve 43 is provided with a small ball head 42 that matches and is embedded in the ball socket hole 521.

[0030] Furthermore, in order to improve the stability of the adapter assembly 4, that is, to ensure that the adapter assembly 4 is in a stable state after adjusting the angle of the adapter assembly 4; the large ball head 52 is provided with a plurality of second reduced diameter grooves 522 evenly spaced along the circumference of the fixed column 51, and the fixed column 51 column thread is equipped with a clamping nut 53, that is, it can move toward the large ball head 52 by rotating the clamping nut 53, and the clamping nut 53 squeezes the large ball head 52, so that the large ball head 52 is deformed inwardly and holds the small ball head 42, so that the position of the small ball head 42 is fixed, and at the same time, the conductivity between the small ball head 42 and the large ball head 52 can be guaranteed.

[0031] Furthermore, the second reduced diameter groove 522 is provided with a flexible friction plate 54, that is, when the large ball head 52 is deformed inwardly, the flexible friction plate 54 can be squeezed, and the flexible friction plate 54 deforms inwardly to squeeze the small ball head 42, further ensuring that the position of the small ball head 42 is fixed.

[0032] In order to prevent the flexible friction plate 54 from affecting the close contact between the small ball head 42 and the large ball head 52 due to deformation, a deformation filling space 55 of the flexible friction plate 54 is provided between the inner side of the flexible friction plate 54 and the groove wall of the second reduced diameter groove 522; that is, after the flexible friction plate 54 is squeezed and deformed, the deformation of its inner side will squeeze the small ball head 42 to ensure that the position of the small ball head 42 is fixed, and at the same time the deformed part will fill into the deformation filling space 55, and will not deform and fill the contact surface between the small ball head 42 and the large ball head 52, so it will not affect the conductivity between the small ball head 42 and the large ball head 52.

[0033] In another embodiment, the universal hinge assembly 5 may also adopt a double-axis hinge structure with a locking function. Since the double-axis hinge structure is a prior art, it will not be described in detail here.

[0034] When in use, since the power station uses three-phase electricity, three insulating pillars 2 are arranged at intervals on the upper surface of the support plate 1 along its length direction, and a cable adapter plate 3 is arranged on the upper end of each insulating pillar 2.

[0035] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A cable adapter device for a new energy power station network access test, comprising a support plate (1), an insulating support (2) vertically mounted on the upper surface of the support plate (1), and a cable adapter plate (3) arranged on the top of the insulating support (2); characterized in that: The cable adapter plate (3) has a wiring hole (32) at one end for connecting the test equipment, and a connection assembly (4) connected to the power station cable at the other end; The adapter component (4) comprises: A connecting column (41), one end of which is connected to the cable adapter plate (3), and the other end of which is fixed with an external threaded sleeve (43), wherein the external threaded sleeve (43) has a tapered portion (431) extending to the outside of the connecting column (41), and the tapered portion (431) is provided with a plurality of first reduced diameter grooves (432) along its circumference; The internal thread sleeve (44) is threadably matched with the external thread sleeve (43) so that the internal thread sleeve (44) is rotated to generate axial movement to squeeze the tapered portion (431), causing the tapered portion (431) to shrink in diameter and tightly hold the power station cable.

2. The cable adapter for network access testing of a new energy power station according to claim 1 is characterized in that: The adapter assembly (4) further comprises an inverted tooth piece (45) arranged on the inner wall of the conical portion (431) to prevent the cable from coming loose; a compression spring (46) is arranged between the inner end of the inverted tooth piece (45) and the inner wall of the conical portion to assist in fixing the cable.

3. The cable adapter for network access testing of a new energy power station according to claim 1 is characterized in that: The cable adapter plate (3) is provided with a mounting hole (31) in the middle thereof and is connected to the top of the insulating support (2) by means of bolts.

4. The cable adapter for network access testing of a new energy power station according to claim 3 is characterized in that: The mounting hole (31) is a waist-shaped hole arranged along the length direction of the cable adapter plate (3), allowing the position of the adapter assembly (4) to be adjusted by adjusting the positional relationship between the bolt and the mounting hole, thereby adapting to power station cables of different lengths.

5. The cable adapter for network access testing of a new energy power station according to claim 1 is characterized in that: The adapter component (4) is connected to one end of the cable adapter plate (3) via a universal hinge component (5).

6. The cable adapter for network access testing of a new energy power station according to claim 5 is characterized in that: The universal joint assembly comprises: A fixing column (51) is connected to the cable adapter plate (3) at one end and is provided with a large ball head (52) at the other end; the large ball head (52) has a ball socket hole (521) inside, and a plurality of second reduced diameter grooves (522) are evenly spaced along the circumference of the fixing column (51); wherein a small ball head (42) embedded in the ball socket hole (521) is provided at one end of the connecting column (41) away from the external threaded sleeve (43), so that the adapter assembly (4) can adapt to power station cables of different angles; The clamping nut (53) is screwed onto the column body of the fixing column (51) so that the clamping nut (53) is rotated to generate axial movement and squeeze the large ball head (52), so that the large ball head (52) is deformed inwardly and holds the small ball head (42), thereby ensuring that the position of the small ball head (42) is fixed and the stability of the adapter assembly (4) is guaranteed.

7. The cable adapter for network access testing of a new energy power station according to claim 6 is characterized in that: The second reduced diameter groove (522) is provided with a flexible friction plate (54) in the groove cavity. When the large ball head (52) is deformed inwardly, the flexible friction plate (54) is squeezed. The flexible friction plate (54) is deformed inwardly to squeeze the small ball head (42), thereby further ensuring that the position of the small ball head (42) is fixed.

8. The cable adapter for network access testing of a new energy power station according to claim 7, characterized in that: A deformation filling space (55) is provided between the inner side of the flexible friction plate (54) and the wall of the second reduced diameter groove (522). When the flexible friction plate (54) is squeezed and deformed, the deformation of the inner side will squeeze the small ball head (42) to ensure that the position is fixed. At the same time, the deformed part will fill into the deformation filling space (55) without affecting the electrical conductivity between the small ball head (42) and the large ball head (52).

9. The cable adapter for network access testing of a new energy power station according to claim 5, characterized in that: The universal hinge assembly (5) adopts a double-axis hinge structure with a locking function.

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