A wind power circuit breaker

Abstract

The utility model belongs to the technical field of electric power equipment, specifically disclose a kind of wind power combined electric appliance, including metal frame and the closed gate subassembly of metal frame upper setting, the side of metal frame is provided with first connecting component and second connecting component, first connecting component is located above second connecting component, first connecting component and second connecting component between being provided with fuse main body, closed gate subassembly with metal frame, first connecting component and fuse main body connect, closed gate subassembly end is provided with total gate, total gate is fixed with metal frame, total gate is electrically connected with total control system, the switch of total gate is controlled by closed gate subassembly, if fuse main body breaks down and breaks, total gate will be closed by closed gate subassembly;The utility model immediately mechanically triggers total gate to close after fuse breaks, avoid failure to expand, reduce arc risk, meet the high reliability requirement of wind power equipment;Pure mechanical structure design, not dependent on electronic sensor or auxiliary power supply, applicable to harsh environment.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a wind power combined electrical appliance. Background Technology

[0002] The wind turbine converts wind energy into alternating current (AC) energy (690 volts) through rotating blades and a generator. This AC energy is then transmitted to the power system via a step-up transformer and 35 kV switchgear within a 35 kV prefabricated substation. Generally, following the principle of one substation per turbine, each wind turbine is equipped with one 35 kV prefabricated substation, and each substation requires one 35 kV switchgear. From an economic perspective, the main components of each switchgear typically utilize a vacuum load disconnector-fuse combination switch, integrating the load disconnector and fuse.

[0003] When the fuse group of the existing wind power combined electrical equipment experiences mechanical breakage or fuse failure, the existing protection system cannot effectively trigger the automatic tripping operation of the main circuit breaker, which can easily lead to incomplete fault isolation and may cause cascading accidents. Incomplete fault isolation may cause cascading accidents, requiring manual intervention to cut off the power supply, thus affecting the fault response time. Utility Model Content

[0004] The purpose of this utility model is to provide a wind power combined electrical appliance that solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wind power combined electrical appliance, comprising a metal frame and a shut-off assembly disposed above the metal frame. A first connecting assembly and a second connecting assembly are disposed on the side of the metal frame, with the first connecting assembly located above the second connecting assembly. A fuse body is disposed between the first and second connecting assemblies. The shut-off assembly is connected to the metal frame, the first connecting assembly, and the fuse body. A main switch is disposed at the end of the shut-off assembly and is fixed to the metal frame. The main switch is electrically connected to a main control system, and the shut-off assembly controls the opening and closing of the main switch. If the fuse body is damaged and breaks, the shut-off assembly will close the main switch.

[0006] In a preferred embodiment of the present invention, the first connecting component includes a fixed electrode post and a first fuse support fixed at the end of the fixed electrode post. The fixed electrode post is fixed to the metal frame, and the first fuse support is used to connect the first connecting component to the fuse body.

[0007] In a preferred embodiment of this invention, the second connecting assembly includes a grounding pole and a second fuse support fixed to the end of the grounding pole, with the grounding pole fixed to the metal frame. The second fuse support is used to connect the second connecting assembly to the fuse body.

[0008] As a preferred embodiment of this utility model, the gate closing assembly includes a control shaft, a tripping rod, and a connecting piece. The control shaft is hinged to a metal frame, the tripping rod is fixed to the control shaft, the connecting piece is connected to the end of the tripping rod, and the connecting piece is connected to the solid-sealed pole and the fuse body. A pressure plate that cooperates with the main gate is fixed near the end of the control shaft.

[0009] The connector contacts the fuse body. When the fuse body breaks, it will knock the connector open, causing the connector to rotate through the tripping rod, which in turn causes the control shaft to rotate and the pressure plate to squeeze the main switch, thereby closing the main switch.

[0010] In a preferred embodiment of this invention, the connector includes a pull rod connecting rod, a fuse connecting rod, and a connecting crank shaft. The connecting crank shaft is fixed between the pull rod connecting rod and the fuse connecting rod. The pull rod connecting rod is hinged to the tripping pull rod, and the connecting crank shaft is hinged to the sealing pole. When the fuse body knocks open the connector, the fuse connecting rod connects to the fuse body. The impact causes the connecting crank shaft to rotate, thereby driving the pull rod connecting rod to rotate. This causes the pull rod connecting rod to drive the control shaft to rotate via the tripping pull rod.

[0011] In a preferred embodiment of this invention, the two ends of the fuse body are respectively fitted into the first fuse support and the second fuse support, and the top end of the fuse body is connected to the fuse connecting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model's fuse immediately triggers the main switch to close after it breaks, preventing the fault from escalating, reducing the risk of electric arc, and meeting the high reliability requirements of wind power equipment; its purely mechanical structure design does not rely on electronic sensors or auxiliary power supplies, making it suitable for harsh environments; the mechanical linkage components adopt a hinged method, resulting in less wear and a longer service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the structure of the first connecting component and the gate closing component of this utility model;

[0017] Figure 4 This is a schematic diagram of the gate closing component of this utility model.

[0018] In the figure: 1. Metal frame; 2. First connecting assembly; 201. Solid sealing pole; 202. First fuse support; 3. Second connecting assembly; 301. Grounding pole; 302. Second fuse support; 4. Fuse body; 5. Main switch; 6. Shut-off assembly; 601. Control shaft; 6011. Pressure plate; 602. Tripping rod; 603. Connecting piece; 6031. Rod connecting rod; 6032. Fuse connecting rod; 6033. Connecting crank. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a wind power combined electrical appliance, including a metal frame 1 and a shut-off assembly 6 disposed above the metal frame 1. A first connecting assembly 2 and a second connecting assembly 3 are disposed on the side of the metal frame 1, with the first connecting assembly 2 located above the second connecting assembly 3. A fuse body 4 is disposed between the first connecting assembly 2 and the second connecting assembly 3. The shut-off assembly 6 is connected to the metal frame 1, the first connecting assembly 2, and the fuse body 4. A main switch 5 is disposed at the end of the shut-off assembly 6, and the main switch 5 is fixed to the metal frame 1. The main switch 5 is electrically connected to a main control system, and the shut-off assembly 6 controls the opening and closing of the main switch 5. If the fuse body 4 is damaged or broken, the shut-off assembly 6 will close the main switch 5.

[0023] Furthermore, the first connecting assembly 2 includes a fixed terminal post 201 and a first fuse support 202 fixed at the end of the fixed terminal post 201. The fixed terminal post 201 is fixed to the metal frame 1, and the first fuse support 202 is used to connect the first connecting assembly 2 to the fuse body 4.

[0024] Furthermore, the second connection assembly 3 includes a grounding pole 301 and a second fuse support 302 fixed to the end of the grounding pole 301. The grounding pole 301 is fixed to the metal frame 1. The second fuse support 302 is used to connect the second connection assembly 3 to the fuse body 4.

[0025] Furthermore, the gate closing assembly 6 includes a control shaft 601, a tripping rod 602, and a connector 603. The control shaft 601 is hinged to the metal frame 1, the tripping rod 602 is fixed to the control shaft 601, and the connector 603 is connected to the end of the tripping rod 602. The connector 603 is also connected to the solid-sealing pole 201 and the fuse body 4. A pressure plate 6011 that cooperates with the main gate 5 is fixed near the end of the control shaft 601.

[0026] The connector 603 contacts the fuse body 4. When the fuse body 4 breaks, it will knock the connector 603 away, causing the connector 603 to drive the control shaft 601 to rotate through the tripping rod 602. This causes the control shaft 601 to drive the pressure plate 6011 to squeeze the main switch 5, thereby closing the main switch 5.

[0027] Furthermore, the connector 603 includes a pull rod connecting rod 6031, a fuse connecting rod 6032, and a connecting crank shaft 6033. The connecting crank shaft 6033 is fixed between the pull rod connecting rod 6031 and the fuse connecting rod 6032. The pull rod connecting rod 6031 is hinged to the tripping pull rod 602, and the connecting crank shaft 6033 is hinged to the sealing pole 201. When the fuse body 4 knocks open the connector 603, the fuse connecting rod 6032 connects to the fuse body 4. Through the impact, the connecting crank shaft 6033 rotates, thereby driving the pull rod connecting rod 6031 to rotate, so that the pull rod connecting rod 6031 drives the control shaft 601 to rotate through the tripping pull rod 602.

[0028] Furthermore, the two ends of the fuse body 4 are respectively fitted into the first fuse support 202 and the second fuse support 302, and the top end of the fuse body 4 is connected to the fuse connecting rod 6032.

[0029] In summary, during use, the fuse body 4 is mounted on the first fuse support 202 and the second fuse support 302 at both ends, with its top end connected to the fuse connecting rod 6032. Under normal operation, the fuse body 4 remains stable, the connecting parts 603 (pull rod connecting rod 6031, fuse connecting rod 6032, and connecting crank 6033) maintain a fixed position, and the main switch 5 remains open. When the fuse mechanically breaks due to overload or short circuit, the broken part impacts the fuse connecting rod 6032, causing the connecting crank 6033 to rotate. The connecting crank 6033 drives the pull rod connecting rod 6031 to move, which in turn pulls the tripping rod 602, causing the control shaft 601 to rotate. The pressure plate 6011 on the control shaft 601 rotates accordingly, pressing down on the main switch 5, forcibly closing the main switch 5 and cutting off the circuit.

[0030] This mechanism uses purely mechanical transmission, requiring no additional electricity or sensors, ensuring reliable operation even in the event of a power failure. After tripping, the control shaft remains in its rotated position to prevent accidental reset until manual intervention is required.

[0031] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind power combined electrical system, characterized in that: The device includes a metal frame (1) and a shut-off assembly (6) disposed on top of the metal frame (1). A first connecting assembly (2) and a second connecting assembly (3) are disposed on the side of the metal frame (1). The first connecting assembly (2) is located above the second connecting assembly (3). A fuse body (4) is disposed between the first connecting assembly (2) and the second connecting assembly (3). The shut-off assembly (6) is connected to the metal frame (1), the first connecting assembly (2) and the fuse body (4). A main switch (5) is disposed at the end of the shut-off assembly (6). The main switch (5) is fixed to the metal frame (1).

2. The wind power combined electrical system according to claim 1, characterized in that: The first connection assembly (2) includes a fixed terminal post (201) and a first fuse support (202) fixed at the end of the fixed terminal post (201). The fixed terminal post (201) is fixed to the metal frame (1).

3. The wind power combined electrical system according to claim 1, characterized in that: The second connection assembly (3) includes a grounding pole (301) and a second fuse support (302) fixed at the end of the grounding pole (301). The grounding pole (301) is fixed to the metal frame (1).

4. A wind power combined electrical system according to claim 1, characterized in that: The shut-off assembly (6) includes a control shaft (601), a tripping rod (602), and a connector (603). The control shaft (601) is hinged to the metal frame (1), the tripping rod (602) is fixed to the control shaft (601), and the connector (603) is connected to the end of the tripping rod (602). The connector (603) is connected to the solid-sealing pole (201) and the fuse body (4). A pressure plate (6011) that cooperates with the main switch (5) is fixed near the end of the control shaft (601).

5. A wind power combined electrical system according to claim 4, characterized in that: The connector (603) includes a pull rod connecting rod (6031), a fuse connecting rod (6032), and a connecting shaft (6033). The connecting shaft (6033) is fixed between the pull rod connecting rod (6031) and the fuse connecting rod (6032). The pull rod connecting rod (6031) is hinged to the tripping pull rod (602), and the connecting shaft (6033) is hinged to the solid sealing pole (201).

6. A wind power combined electrical system according to claim 1, characterized in that: The fuse body (4) is fitted at both ends into the first fuse support (202) and the second fuse support (302), and the top end of the fuse body (4) is connected to the fuse connecting rod (6032).

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