Busbar protection structure of compressed air energy storage power station

Abstract

The utility model relates to compressed air energy storage power station technical field discloses a bus protection structure of compressed air energy storage power station, including insulating casing, insulating casing is composed by insulating box and insulating cover, and the insulating box and insulating cover of insulating casing are connected through screw, the bottom fixedly connected with permanent magnet ring of insulating cover of insulating casing, the bottom of permanent magnet ring is provided with armature, and the top of one end of armature is provided with baffle, the bottom fixedly connected with the supporting plate of baffle, both sides of the bottom end of baffle are fixedly connected with round bar, and two round bars are all sleeved with fixed plate, and the bottom of insulating cover of fixed plate fixedly connected insulating casing is set up, one side fixedly connected with the sleeve board of baffle, the inner wall slidingly connected with slider of sleeve board, and the inside of sleeve board is provided with first spring. The utility model has high security, can avoid the armature reset after triggering power-off protection, avoids the emergence of repeated overload or short circuit and leads to equipment damage.

Description

Technical Field

[0001] This utility model relates to the field of compressed air energy storage power station technology, and in particular to a busbar protection structure for a compressed air energy storage power station. Background Technology

[0002] A search revealed Chinese patent CN214123820U, which discloses a 10kV busbar protection structure for a compressed air energy storage power station. The structure includes an insulating shell, with main line terminals on both sides inside the shell. Each main line terminal connects to a stationary contact, and above each stationary contact is a moving contact. Two moving contacts are connected together by a conductive rod, with an armature on the upper side of the conductive rod. A sliding hole is located on the shell corresponding to the armature, and a manual control switch is installed in the sliding hole. A permanent magnet is located at the lower part of the conductive rod, and a permanent magnet ring is located inside the shell at the sliding hole. An electromagnetic coil is located below the permanent magnet inside the shell, and the upward magnetic pole of the electromagnetic coil, when energized, is in the same direction as the downward magnetic pole of the permanent magnet. The electromagnetic coil is connected in series with the main line terminals. This invention is relatively inexpensive and reliable in operation.

[0003] The 10kV busbar protection structure for a compressed air energy storage power station described in the aforementioned patent has the following shortcomings: Power equipment (such as large motors and transformers) in a compressed air energy storage power station generates a high magnetic field during operation. If the direction of this high magnetic field is opposite to the magnetic field direction of the permanent magnet ring, a cancellation effect will occur, reducing the effective attraction of the permanent magnet ring. This will affect the positional stability between the permanent magnet ring and the armature, potentially causing the armature to fall and re-energize the stationary and moving contacts, leading to overload or short circuit, which may damage the equipment. Therefore, a busbar protection structure for a compressed air energy storage power station needs to be designed to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a busbar protection structure for a compressed air energy storage power station.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A busbar protection structure for a compressed air energy storage power station includes an insulating shell, which is composed of an insulating box and an insulating cover plate. The insulating box and the insulating cover plate are connected by screws. A permanent magnet ring is fixedly connected to the bottom of the insulating cover plate. An armature is provided at the bottom of the permanent magnet ring. A baffle is provided at the top of one end of the armature. A support plate is fixedly connected to the bottom of the baffle. Round rods are fixedly connected to both sides of the bottom end of the baffle. A fixing plate is sleeved on each of the two round rods. The fixing plate is fixedly connected to the bottom of the insulating cover plate of the insulating shell. A sleeve plate is fixedly connected to one side of the baffle. A slider is slidably connected to the inner wall of the sleeve plate. A first spring is provided inside the sleeve plate. A limit plate is provided on the side of the slider away from the baffle. The limit plate is fixedly connected to the insulating cover plate of the insulating shell. Because a technical means is adopted to allow the support plate to hold the armature after the armature rises and contacts the permanent magnet ring, the armature... During the ascent of the armature, the baffle rotates around the rod, causing the baffle to move the support plate to the bottom of the armature and support it. Simultaneously, the slider's extension is limited by the limiting plate, ensuring the stability of the support plate's position. This allows the support plate to firmly hold the armature, preventing it from resetting. This effectively solves the problem mentioned in the background technology where high magnetic fields are generated during the operation of electrical equipment (such as large motors and transformers) in compressed air energy storage power stations. If the direction of this high magnetic field is opposite to the magnetic field of the permanent magnet ring, a cancellation effect will occur, reducing the effective attraction of the permanent magnet ring and affecting the positional stability between the permanent magnet ring and the armature. The armature may fall, causing the stationary and moving contacts to re-engage and energize, leading to overload or short circuit and potentially damaging the equipment. This technology achieves high safety, preventing the armature from resetting after triggering power-off protection and avoiding repeated overload or short circuits that could damage the equipment.

[0007] As a further embodiment of this utility model, a first wire-passing terminal and two second wire-passing terminals are respectively provided on both sides of the insulating shell. The two second wire-passing terminals are fixedly connected to the same insulating block on the side that is close to each other. The two second wire-passing terminals are fixedly connected to the same electromagnetic coil. A permanent magnet block is provided inside the insulating shell.

[0008] As a further embodiment of this utility model, a conductive plate is fixedly connected to the top of the permanent magnet block, and movable contact blocks are fixedly connected to the bottom of both ends of the conductive plate. Static contact blocks are provided at the bottom of the two movable contact blocks, and the two static contact blocks are respectively fixedly connected to the first wire-passing terminal and the second wire-passing terminal. An armature is fixedly connected to the conductive plate.

[0009] As a further embodiment of this utility model, four damping telescopic rods are provided at the top and bottom of the insulating shell. The bottom of the four damping telescopic rods at the top is fixedly connected to the insulating cover plate of the insulating shell, and the top of the four damping telescopic rods at the bottom is fixedly connected to the insulating box of the insulating shell. The damping telescopic rods are fitted with a second spring.

[0010] As a further embodiment of this utility model, the top of each of the four damping telescopic rods located at the top is fixedly connected to the same top plate, and the bottom of each of the four damping telescopic rods located at the bottom is fixedly connected to the same bottom plate.

[0011] As a further embodiment of this utility model, four support rods are provided between the top plate and the bottom plate. The bottom of the support rods is fixedly connected to the bottom plate, and the top of the support rods is fastened to the top plate by screws.

[0012] As a further embodiment of this utility model, four guide rods are provided on the top plate and the insulating shell. The guide rods are slidably connected to the insulating shell and the top plate. An armature is fixedly connected to the bottom of two of the guide rods, and the same handle is fixedly connected to the top of two of the guide rods.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention employs a technique where the armature rises and contacts the permanent magnet ring, allowing the support plate to hold the armature. During the armature's ascent, the baffle rotates around the rod, moving the support plate to the bottom of the armature and holding it in place. Simultaneously, the slider's extension is limited by the limiting plate, ensuring the support plate's stable position. This prevents the armature from resetting, effectively solving the problem mentioned in the background art where high magnetic fields are generated during the operation of electrical equipment (such as large motors and transformers) in compressed air energy storage power stations. If the direction of this high magnetic field is opposite to the magnetic field of the permanent magnet ring, a cancellation effect occurs, reducing the effective attraction of the permanent magnet ring and affecting the positional stability between the permanent magnet ring and the armature. This could cause the armature to fall, leading to re-contact between the stationary and moving contacts, resulting in overload or short circuit and potential equipment damage. This invention achieves high safety by preventing the armature from resetting after triggering power-off protection, thus avoiding repeated overload or short circuits that could damage the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a busbar protection structure for a compressed air energy storage power station proposed in this utility model.

[0016] Figure 2This is a partial structural schematic diagram of a busbar protection structure for a compressed air energy storage power station proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the insulating shell of the busbar protection structure of a compressed air energy storage power station proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the insulating shell of a busbar protection structure for a compressed air energy storage power station proposed in this utility model.

[0019] Figure 5 This is a front view of the fixing plate of the busbar protection structure of a compressed air energy storage power station proposed in this utility model.

[0020] Figure 6 This is a cross-sectional view of the fixed plate of the busbar protection structure of a compressed air energy storage power station proposed in this utility model.

[0021] In the diagram: 1. Insulating shell; 2. Permanent magnet ring; 3. Armature; 4. Baffle; 5. Support plate; 6. Round rod; 7. Fixing plate; 8. Sleeve plate; 9. Slider; 10. First spring; 11. Limiting plate; 12. Permanent magnet block; 13. First wire terminal; 14. Second wire terminal; 15. Insulating block; 16. Electromagnetic coil; 17. Stationary contact block; 18. Moving contact block; 19. Conductive plate; 20. Damping telescopic rod; 21. Second spring; 22. Top plate; 23. Support rod; 24. Base plate; 25. Guide rod; 26. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and implementing regulations.

[0024] Reference Figure 1 - Figure 6A busbar protection structure for a compressed air energy storage power station includes an insulating shell 1, which consists of an insulating box and an insulating cover plate. The insulating box and the insulating cover plate of the insulating shell 1 are connected by screws. A permanent magnet ring 2 is fixedly connected to the bottom of the insulating cover plate of the insulating shell 1. An armature 3 is provided at the bottom of the permanent magnet ring 2. A baffle 4 is provided at the top of one end of the armature 3. A support plate 5 is fixedly connected to the bottom of the baffle 4. Round rods 6 are fixedly connected to both sides of the bottom end of the baffle 4. Fixing plates 7 are fitted on both round rods 6. The fixing plates 7 are fixedly connected to the bottom of the insulating cover plate of the insulating shell 1. A sleeve plate 8 is fixedly connected to one side of the baffle 4. A slider 9 is slidably connected to the inner wall of the sleeve plate 8. A first spring 10 is provided inside the sleeve plate 8. A limit plate 11 is provided on the side of the slider 9 away from the baffle 4. The limit plate 11 is fixedly connected to the insulating cover plate of the insulating shell 1. Because a technical means is adopted to allow the support plate to hold the armature after the armature rises and contacts the permanent magnet ring, During the armature's ascent, the baffle rotates around the rod, causing the support plate to move to the bottom of the armature and hold it in place. Simultaneously, the slider's extension is limited by the limiting plate, ensuring the support plate's stable position. This prevents the armature from resetting, effectively solving the problem mentioned in the background technology where high magnetic fields are generated during the operation of electrical equipment (such as large motors and transformers) in compressed air energy storage power stations. If the direction of this high magnetic field is opposite to the magnetic field of the permanent magnet ring, a cancellation effect occurs, reducing the effective attraction of the permanent magnet ring and affecting the positional stability between the permanent magnet ring and the armature. This could cause the armature to fall, leading to the static and moving contacts re-energizing, resulting in overload or short circuit, potentially damaging the equipment. Therefore, this technology achieves high safety, preventing the armature from resetting after triggering power-off protection and avoiding repeated overload or short circuits that could damage the equipment.

[0025] In this embodiment, a first wire terminal 13 and two second wire terminals 14 are respectively provided on both sides of the insulating housing 1. The two second wire terminals 14 are fixedly connected to the same insulating block 15 on the side that is close to each other. The two second wire terminals 14 are fixedly connected to the same electromagnetic coil 16. A permanent magnet block 12 is provided inside the insulating housing 1.

[0026] In this embodiment, a conductive plate 19 is fixedly connected to the top of the permanent magnet block 12, and movable contact blocks 18 are fixedly connected to the bottom of both ends of the conductive plate 19. Static contact blocks 17 are provided at the bottom of the two movable contact blocks 18, and the two static contact blocks 17 are fixedly connected to the first wire terminal 13 and the second wire terminal 14 respectively. The conductive plate 19 is fixedly connected to the armature 3.

[0027] In this embodiment, four damping telescopic rods 20 are provided at the top and bottom of the insulating housing 1. The bottom of the four damping telescopic rods 20 at the top is fixedly connected to the insulating cover plate of the insulating housing 1, and the top of the four damping telescopic rods 20 at the bottom is fixedly connected to the insulating box of the insulating housing 1. The damping telescopic rods 20 are fitted with a second spring 21.

[0028] In this embodiment, the top of the four damping telescopic rods 20 located at the top is fixedly connected to the same top plate 22, and the bottom of the four damping telescopic rods 20 located at the bottom is fixedly connected to the same bottom plate 24.

[0029] In this embodiment, four support rods 23 are provided between the top plate 22 and the bottom plate 24. The bottom of the support rods 23 is fixedly connected to the bottom plate 24, and the top of the support rods 23 is fastened to the top plate 22 by screws.

[0030] In this embodiment, four guide rods 25 are provided on the top plate 22 and the insulating shell 1. The guide rods 25 are slidably connected to the insulating shell 1 and the top plate 22. The bottom of each guide rod 25 is fixedly connected to an armature 3, and the top of each guide rod 25 is fixedly connected to the same handle 26.

[0031] Working principle: When the main circuit is running normally, the sum of the weights of the handle 26, guide rod 25, armature 3, conductive plate 19, moving contact 18, and permanent magnet 12 is greater than the repulsive force of the magnetic force generated by the electromagnetic coil 16 under normal energization on the permanent magnet 12. Therefore, under the action of gravity, the moving contact 18 will contact the stationary contact 17 and be normally energized. When the main circuit is overloaded or short-circuited, the current in the main circuit increases instantaneously, and the magnetic force generated by the electromagnetic coil 16 also increases, increasing the repulsive force on the permanent magnet 12. The permanent magnet 12 will then lift the conductive plate 19, and the conductive plate 19 will lift the moving contact 18, no longer contacting the stationary contact 17. When contact 7 is made, the circuit is de-energized. Simultaneously, the conductive plate 19 rises, carrying the armature 3 with it. The armature 3 is attracted by the permanent magnet ring 2 and is attracted to it, keeping the moving contact 18 and the stationary contact 17 out of contact. As the armature 3 rises, it also contacts the baffle 4, causing the top of the baffle 4 to move. This allows the bottom of the support plate 5 to move to the bottom of the armature 3, supporting it. This prevents the magnetic force of the permanent magnet ring 2 from weakening due to external electromagnetic interference, ensuring that the armature 3 will not move away from the permanent magnet ring 2 when the circuit is overloaded or short-circuited and protection is triggered. This ensures that the moving contact 18 and the stationary contact 17 are not in contact at this time. 8 can avoid contact with the stationary contact block 17, improving safety. When the baffle 4 rotates around the round rod 6, it will drive the sleeve plate 8 to move, which in turn will drive the slider 9 to move. When the slider 9 contacts the limiting plate 11, the first spring 10 is in a contracted state. When the slider 9 moves past the limiting plate 11 and no longer contacts the limiting plate 11, the first spring 10 will extend, allowing the slider 9 to extend. At this time, the slider 9 is at the bottom of the limiting plate 11, which plays a limiting role and prevents the armature 3 support plate 5 from resetting due to the weight of the armature 3. When it is necessary to restore, unscrew the screws on the top plate 22 and the insulating shell 1 to allow the slider 9 to return to the sleeve plate 8. The second spring 21 will absorb and mitigate the force from the vibration source when the device is affected by the vibration generated by the compressor, generator or other rotating equipment in the compressed air energy storage power station. This will keep the relative position between the permanent magnet ring 2 and the armature 3 relatively stable, reduce the displacement caused by vibration, absorb vibration energy through the damping telescopic rod 20, reduce the intensity of vibration transmission, and reduce the amplitude and duration of vibration through damping. This will reduce the impact of external vibration force on the position between the permanent magnet ring 2 and the armature 3, and further improve stability and safety.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A busbar protection structure for a compressed air energy storage power station, comprising an insulating shell (1), characterized in that, The insulating housing (1) consists of an insulating box and an insulating cover plate. The insulating box and the insulating cover plate of the insulating housing (1) are connected by screws. A permanent magnet ring (2) is fixedly connected to the bottom of the insulating cover plate of the insulating housing (1). An armature (3) is provided at the bottom of the permanent magnet ring (2). A baffle (4) is provided at the top of one end of the armature (3). A support plate (5) is fixedly connected to the bottom of the baffle (4). Round rods (6) are fixedly connected to both sides of the bottom end of the baffle (4). Each of the round rods (6) is fitted with a fixing plate (7), which is fixedly connected to the bottom of the insulating cover plate of the insulating shell (1). A sleeve plate (8) is fixedly connected to one side of the baffle (4). A slider (9) is slidably connected to the inner wall of the sleeve plate (8). A first spring (10) is provided inside the sleeve plate (8). A limit plate (11) is provided on the side of the slider (9) away from the baffle (4). The limit plate (11) is fixedly connected to the insulating cover plate of the insulating shell (1).

2. The busbar protection structure of the compressed air energy storage power station according to claim 1, characterized in that, The insulating shell (1) is provided with a first wire terminal (13) and two second wire terminals (14) on both sides respectively. The two second wire terminals (14) are fixedly connected to the same insulating block (15) on the side that is close to each other. The two second wire terminals (14) are fixedly connected to the same electromagnetic coil (16). The insulating shell (1) is provided with a permanent magnet block (12).

3. The busbar protection structure of the compressed air energy storage power station according to claim 2, characterized in that, A conductive plate (19) is fixedly connected to the top of the permanent magnet block (12). Moving contact blocks (18) are fixedly connected to the bottom of both ends of the conductive plate (19). Static contact blocks (17) are provided at the bottom of the two moving contact blocks (18). The two static contact blocks (17) are fixedly connected to the first wire terminal (13) and the second wire terminal (14) respectively. An armature (3) is fixedly connected to the conductive plate (19).

4. The busbar protection structure of the compressed air energy storage power station according to claim 1, characterized in that, The top and bottom of the insulating shell (1) are provided with four damping telescopic rods (20). The bottom of the four damping telescopic rods (20) at the top is fixedly connected to the insulating cover plate of the insulating shell (1), and the top of the four damping telescopic rods (20) at the bottom is fixedly connected to the insulating box of the insulating shell (1). The damping telescopic rods (20) are fitted with a second spring (21).

5. The busbar protection structure of the compressed air energy storage power station according to claim 4, characterized in that, The top of the four damping telescopic rods (20) located at the top is fixedly connected to the same top plate (22), and the bottom of the four damping telescopic rods (20) located at the bottom is fixedly connected to the same bottom plate (24).

6. The busbar protection structure of the compressed air energy storage power station according to claim 5, characterized in that, Four support rods (23) are provided between the top plate (22) and the bottom plate (24). The bottom of the support rods (23) is fixedly connected to the bottom plate (24), and the top of the support rods (23) is fastened to the top plate (22) by screws.

7. The busbar protection structure of the compressed air energy storage power station according to claim 6, characterized in that, Four guide rods (25) are provided on the top plate (22) and the insulating shell (1). The guide rods (25) are slidably connected to the insulating shell (1) and the top plate (22). The bottom of two guide rods (25) are fixedly connected to armatures (3), and the top of two guide rods (25) are fixedly connected to the same handle (26).

Images