New energy box transformer circuit breaker interlocking device and working method thereof

Abstract

The application relates to a new energy box transformer circuit breaker interlocking device and a working method thereof, which comprises a circuit breaker arranged in the inside of a box transformer cabinet body and a box transformer cabinet door arranged at the front end of the box transformer cabinet body, a door plate interlocking rod is fixedly connected with a tongue piece on the left side of the circuit breaker, an interlocking sliding plate is horizontally arranged above the circuit breaker, the left end of the interlocking sliding plate is fixedly connected with a circuit breaker connecting rod at the left end of the circuit breaker, and a bolt plate is fixedly connected with the right end of the interlocking sliding plate; an interlocking pressing plate for pressing the door plate interlocking rod backward when the box transformer cabinet door is closed is fixedly connected with the left end of the inside of the box transformer cabinet door, a longitudinal interlocking bent plate is fixedly connected with the right end of the inside of the box transformer cabinet door, and a bolt hole is arranged in the rear end of the interlocking bent plate, so as to facilitate the transverse penetration of the bolt plate. The application has the advantages of reasonable structure design, reliable mechanical interlocking between the circuit breaker and the box transformer cabinet door during the interlocking change of the circuit breaker, strong anti-error function, and safe and reliable box transformer products.

Description

Technical field:

[0002] The present invention relates to a new energy box transformer circuit breaker interlocking device and a working method thereof. Background technology:

[0004] As the capacity of box-type transformers in the renewable energy sector increases, high-voltage circuit breakers are becoming more widely used, with an increasing number of photovoltaic and wind power projects employing them. However, the interlocking mechanism on existing box-type transformer circuit breakers is typically located on the left side, significantly impacting maintenance operations and the appearance of the box-type transformer, which in turn affects the reliability and safety of the product. Summary of the invention:

[0006] The present invention aims to improve the problems existing in the above-mentioned prior art. That is, the technical problem to be solved by the present invention is to provide a new energy box transformer circuit breaker interlocking device and a working method thereof. The structural design is reasonable, making the box transformer product safer and more reliable.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a new energy box transformer circuit breaker interlocking device, comprising a circuit breaker arranged inside a box transformer cabinet and a box transformer cabinet door arranged at the front end of the box transformer cabinet, the left side tongue of the circuit breaker is fixedly connected with a door panel interlocking rod, and an interlocking slide is horizontally provided above the circuit breaker, the left end of the interlocking slide is fixedly connected to the circuit breaker connecting rod at the left end of the circuit breaker, and the upper side of the right end of the interlocking slide is fixedly connected with a latch plate; the inner left end of the box transformer cabinet door is fixedly connected with an interlocking pressure plate for pressing the door panel interlocking rod backward when the box transformer cabinet door is closed, and the inner right end of the box transformer cabinet door is fixedly connected with a longitudinally arranged interlocking bent plate, and the rear end of the interlocking bent plate is provided with a latch opening for facilitating the latch plate to pass through horizontally.

[0008] Furthermore, the top surface of the circuit breaker is fixedly connected with a U-shaped support plate and a vertical support plate from left to right in sequence, and the lower ends of the left and right sides of the U-shaped support plate and the lower end of the vertical support plate are coaxially provided with a first horizontal through hole to facilitate the interlocking slide to slide through in the horizontal direction.

[0009] Furthermore, the latch plate is arranged horizontally; the upper end of the right side of the U-shaped support plate and the upper end of the vertical support plate are coaxially provided with a second transverse through hole to facilitate the latch plate to slide through in the transverse direction.

[0010] Furthermore, a first connecting bolt is vertically passed through the right end of the interlocking slide and the latch plate. The upper and lower ends of the first connecting bolt are respectively locked and fixed to the latch plate and the interlocking slide by nuts. The first connecting bolt is located between the U-shaped support plate and the vertical support plate.

[0011] Furthermore, the left end of the interlocking slide is fixedly connected with a vertically arranged second connecting bolt, which is located between the left and right sides of the U-shaped support plate, and a horizontally arranged buffer spring is connected between the upper end of the second connecting bolt and the left side of the U-shaped support plate.

[0012] Furthermore, the interlocking bent plate is located on the left side of the latch plate.

[0013] Furthermore, the left end of the interlocking slide is bent downward by 90 degrees, and the bent section is fixedly connected to the circuit breaker connecting rod.

[0014] Furthermore, the door panel interlocking rod is L-shaped and arranged longitudinally, and the rear end of the long side of the door panel interlocking rod is fixedly connected to the tongue piece on the left side of the circuit breaker; the interlocking pressure plate is V-shaped, and the opening of the interlocking pressure plate faces the front side. When the transformer cabinet door is closed, one side oblique edge of the interlocking pressure plate abuts against the end face of the short side of the door panel interlocking rod, and pushes the tongue piece on the left side of the circuit breaker backward.

[0015] Another technical solution adopted by the present invention is: a working method of a new energy box transformer circuit breaker interlocking device, comprising the following steps:

[0016] (1) When the box-type transformer is operating normally, the box-type transformer cabinet door is in the closed state, the interlocking pressure plate presses the door panel interlocking rod backward, and the door panel interlocking rod drives the left tongue of the circuit breaker to move backward. At this time, the circuit breaker can be opened and closed; because the circuit breaker can be closed, the closing of the circuit breaker mechanism drives the circuit breaker connecting rod to move left, and the circuit breaker connecting rod drives the latch plate to move left synchronously through the interlocking slide. The latch plate extends into the latch port at the rear end of the interlocking bent plate, forming an interlock, so that the box-type transformer cabinet door cannot be opened;

[0017] (2) When maintenance is required, the circuit breaker mechanism is opened and the circuit breaker connecting rod moves to the right. The circuit breaker connecting rod drives the latch plate to move to the right synchronously through the interlocking slide, so that the latch plate is separated from the latch opening at the rear end of the interlocking bent plate, the interlock is released, and the box-type transformer cabinet door can be opened for maintenance. At this time, the interlocking pressure plate is separated from the door panel interlocking rod, and the tongue on the left side of the circuit breaker is reset forward. The circuit breaker cannot be closed, thereby achieving the purpose of preventing errors.

[0018] Compared with the prior art, the present invention has the following effects: the present invention has a reasonable structural design, and while the circuit breaker is interlocked and reversed, a reliable mechanical interlock is formed with the box-type transformer cabinet door, which has a strong anti-error function and makes the box-type transformer product safer and more reliable. Description of the drawings:

[0020] Figure 1 1 is a schematic top view of the structure of an embodiment of the present invention;

[0021] Figure 2 1 is a schematic diagram of the main structure of an embodiment of the present invention;

[0022] Figure 3 is Figure 1 The structure schematic diagram when the latch plate is separated from the latch hole in the box transformer cabinet;

[0023] Figure 4 is Figure 3 The structure schematic diagram when the box transformer cabinet door is opened in the box transformer cabinet;

[0024] Figure 5 is Figure 2 The structure schematic diagram when the latch plate is separated from the latch hole in the box transformer cabinet.

[0025] In the figure:

[0026] 1-box transformer cabinet; 2-circuit breaker; 21-tongue piece; 3-box transformer cabinet door; 4-door plate interlocking rod; 5-interlocking sliding plate; 51-bent section; 6-circuit breaker connecting rod; 7-latch plate; 8-interlocking pressing plate; 9-interlocking bent plate; 10-latch hole; 11-U-shaped support plate; 12-vertical support plate; 13-first transverse through hole; 14-second transverse through hole; 15-first connecting bolt; 16-second connecting bolt; 17-buffer spring. DETAILED DESCRIPTION:

[0028] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0029] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] As Figures 1 to 5As shown, the present invention provides a new energy box transformer circuit breaker interlocking device, comprising a circuit breaker 2 arranged inside a box transformer cabinet 1 and a box transformer cabinet door 3 arranged at the front end of the box transformer cabinet 1, wherein the left tongue piece 21 of the circuit breaker is fixedly connected with a door panel interlocking rod 4, an interlocking slide 5 is horizontally arranged above the circuit breaker 2, the left end of the interlocking slide 5 is fixedly connected with the circuit breaker connecting rod 6 at the left end of the circuit breaker 2, and the interlocking slide 5 is driven to move horizontally left and right when the circuit breaker connecting rod 6 is closed or opened; a latch plate 7 is fixedly connected to the upper side of the right end of the interlocking slide 5; the box transformer The inner left end of the cabinet door 3 is fixedly connected with an interlocking pressure plate 8 for pressing the door panel interlocking rod 4 backward when the box-type transformer cabinet door 3 is closed. When the door panel interlocking rod 4 is pressed backward by the interlocking pressure plate 8, the door panel interlocking rod 4 drives the left side tongue 21 of the circuit breaker 2 to move backward. At this time, the circuit breaker 2 cannot be closed, forming a mechanical error prevention; the inner right end of the box-type transformer cabinet door 3 is fixedly connected with a longitudinally arranged interlocking bent plate 9, which is located on the left side of the latch plate 7. The rear end of the interlocking bent plate 9 is provided with a latch opening 10 to facilitate the latch plate 7 to pass through in the horizontal direction.

[0031] In this embodiment, in order to support and guide the left and right movement of the interlocking slide 5, the top surface of the circuit breaker 1 is fixedly connected with a U-shaped support plate 11 and a vertical support plate 12 by screws from left to right. The lower ends of the left and right sides of the U-shaped support plate 11 and the lower end of the vertical support plate 12 are coaxially provided with a first transverse through hole 13 to facilitate the transverse sliding of the interlocking slide 5.

[0032] In this embodiment, in order to support and guide the left and right movement of the latch plate 7, the latch plate 7 is arranged horizontally; the upper end of the right side of the U-shaped support plate 11 and the upper end of the vertical support plate 12 are coaxially provided with a second horizontal through hole 14 to facilitate the horizontal sliding of the latch plate 7.

[0033] In this embodiment, a first connecting bolt 15 is vertically passed through the right end of the interlocking slide 5 and the latch plate 7. The upper and lower ends of the first connecting bolt 15 are respectively locked and fixed to the latch plate 7 and the interlocking slide 5 by double nuts to achieve a fixed connection between the latch plate 7 and the interlocking slide 5, ensuring that the two move synchronously; the first connecting bolt 15 is located between the U-shaped support plate 11 and the vertical support plate 12, and the U-shaped support plate and the vertical support plate are used to limit the left and right movement of the latch plate.

[0034] In this embodiment, the left end of the interlocking slide 5 is fixedly connected with a vertically arranged second connecting bolt 16, and the second connecting bolt 16 is located between the left and right sides of the U-shaped support plate 11. A horizontally arranged buffer spring 17 is connected between the upper end of the second connecting bolt 16 and the left side of the U-shaped support plate 11; the buffer spring can provide a certain buffer for the left and right movement of the interlocking slide.

[0035] In the embodiment, the left end of the interlocking slide plate 5 is bent downward by 90 degrees, and the bent section 51 is fixedly connected with the circuit breaker connecting rod 6 through bolts.

[0036] In the embodiment, the door plate interlocking rod 4 is L-shaped and longitudinally arranged, and the rear end of the long side of the door plate interlocking rod 4 is fixedly connected with the left tongue 21 of the circuit breaker 2; the interlocking pressing plate 8 is V-shaped, and the opening of the interlocking pressing plate 8 faces the front side; when the cabinet door 3 is closed, the side bevel of the interlocking pressing plate 8 abuts against the end face of the short side of the door plate interlocking rod 4, and pushes the left tongue 21 of the circuit breaker to move backward.

[0037] In the embodiment, the vertical support plate and the interlocking bent plate are both L-shaped.

[0038] The working method of the interlocking device is as follows:

[0039] (1) When the box-type transformer product (the box-type transformer substation) is normally operated, the cabinet door 3 is in the closed state, the interlocking pressing plate 8 presses the door plate interlocking rod 4 backward, the door plate interlocking rod 4 drives the left tongue 21 of the circuit breaker 2 to move backward, and at this time, the circuit breaker 2 can be switched on and off; since the circuit breaker 2 can be switched on, the circuit breaker mechanism drives the circuit breaker connecting rod 6 to move left, and the circuit breaker connecting rod 6 drives the latch plate 7 to move left synchronously through the interlocking slide plate 5, the latch plate 7 extends into the latch opening 10 at the rear end of the interlocking bent plate 9, interlocking is formed, and the cabinet door 3 cannot be opened;

[0040] (2) When maintenance is needed, the circuit breaker mechanism drives the circuit breaker connecting rod 6 to move right, the circuit breaker connecting rod 6 drives the latch plate 7 to move right synchronously through the interlocking slide plate 5, the latch plate 7 is separated from the latch opening 10 at the rear end of the interlocking bent plate 9, the interlocking is released, and the cabinet door 3 can be opened for maintenance; at this time, the interlocking pressing plate 8 is separated from the door plate interlocking rod 4, the left tongue 21 of the circuit breaker 2 is reset forward, and the circuit breaker 2 cannot be switched on, thereby achieving the purpose of preventing errors.

[0041] The advantages of the present application are as follows: through the transmission operation (the interlocking slide plate drives the latch plate to move) of the mechanism when the circuit breaker is switched off, the reversing mechanical interlocking of the circuit breaker and the cabinet door of the box-type transformer product is realized, the interlocking is reliable, has strong anti-error function, and makes the box-type transformer product more safe and reliable; meanwhile, the whole interlocking device has simple structure and is convenient to install.

[0042] If the present application discloses or involves mutually fixedly connected parts or structural members, except for another statement, the fixed connection can be understood as: the fixed connection capable of being disassembled (for example, connected through bolts or screws), and can also be understood as: the fixed connection incapable of being disassembled (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by an integral structure (for example, integrally formed through a casting process), except for obviously unable to adopt the integral forming process.

[0043] In addition, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present application include states or shapes similar, analogous or close to them, unless otherwise stated.

[0044] Any of the components provided by the present application can be assembled from multiple individual components or manufactured as a single component by one-piece forming process.

[0045] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A new energy box transformer circuit breaker interlocking device, comprising a circuit breaker arranged in the inside of a box transformer cabinet and a box transformer cabinet door arranged at the front end of the box transformer cabinet, characterized in that: The door plate interlocking rod is fixedly connected with the left tongue of the circuit breaker, and the circuit breaker is horizontally provided with an interlocking sliding plate, the left end of the interlocking sliding plate is fixedly connected with the circuit breaker connecting rod at the left end of the circuit breaker, and the right end of the interlocking sliding plate is fixedly connected with the latch plate on the upper side. The top surface of the circuit breaker is sequentially fixedly connected with a U-shaped support plate and a vertical support plate from left to right, coaxial first horizontal through holes are formed in the lower ends of the left and right sides of the U-shaped support plate and the lower end of the vertical support plate, and the interlocking sliding plate is capable of sliding through the first horizontal through holes in the horizontal direction. A first connecting bolt is vertically arranged between the right end of the interlocking sliding plate and the latch plate, the upper and lower ends of the first connecting bolt are respectively locked and fixed with the latch plate and the interlocking sliding plate through nuts, and the first connecting bolt is located between the U-shaped support plate and the vertical support plate. A second connecting bolt is vertically arranged at the left end of the interlocking sliding plate, the second connecting bolt is located between the left and right sides of the U-shaped support plate, and a horizontal buffer spring is connected between the upper end of the second connecting bolt and the left side of the U-shaped support plate. The left end of the interlocking sliding plate is bent downward by 90 degrees, and the bent section is fixedly connected with the circuit breaker connecting rod. The door plate interlocking rod is L-shaped and longitudinally arranged, the long edge rear end of the door plate interlocking rod is fixedly connected with the left tongue of the circuit breaker, the interlocking pressing plate is V-shaped, the opening of the interlocking pressing plate faces the front side, when the cabinet transformer substation cabinet door is closed, the side bevel of the interlocking pressing plate abuts against the end face of the short edge of the door plate interlocking rod, and the left tongue of the circuit breaker is pushed backward.

2. The new energy box circuit breaker interlocking device according to claim 1, characterized in that: The latch plate is horizontally arranged, coaxial second horizontal through holes are formed in the upper end of the right side of the U-shaped support plate and the upper end of the vertical support plate, and the latch plate is capable of sliding through the second horizontal through holes in the horizontal direction.

3. The new energy box circuit breaker interlocking device according to claim 1, characterized in that: The interlocking bending plate is located on the left side of the latch plate.

4. A working method of a new energy box transformer circuit breaker interlocking device, characterized in that: The new energy cabinet transformer circuit breaker interlocking device comprises the new energy cabinet transformer circuit breaker interlocking device according to claim 1, and comprises the following steps: (1) when the cabinet transformer is normally operated, the cabinet transformer substation cabinet door is in the closed state, the interlocking pressing plate presses the door plate interlocking rod backward, the door plate interlocking rod drives the left tongue of the circuit breaker to be pushed backward, at this time, the circuit breaker can be switched on and off; since the circuit breaker can be switched on, the circuit breaker mechanism drives the circuit breaker connecting rod to move left, the circuit breaker connecting rod drives the latch plate to synchronously move left through the interlocking sliding plate, the latch plate is inserted into the latch hole in the rear end of the interlocking bending plate, interlocking is formed, and the cabinet transformer substation cabinet door cannot be opened; (2) when maintenance is needed, the circuit breaker mechanism drives the circuit breaker connecting rod to move right, the circuit breaker connecting rod drives the latch plate to synchronously move right through the interlocking sliding plate, the latch plate is separated from the latch hole in the rear end of the interlocking bending plate, the interlocking is released, the cabinet transformer substation cabinet door can be opened for maintenance, at this time, the interlocking pressing plate is separated from the door plate interlocking rod, the left tongue of the circuit breaker is reset forward, the circuit breaker cannot be switched on, and the purpose of preventing errors is achieved.

Images