A wind power box transformer high voltage fixed circuit breaker interlocking device and box transformer

Abstract

A wind power box-to-high voltage fixed circuit breaker interlocking device comprises a housing and a closing interlocking mechanism and an opening interlocking mechanism arranged in the housing; the closing interlocking mechanism comprises a driving plate, a first transmission part, and a closing interlocking shaft connected in sequence; the first transmission part is used to drive the driving plate to rotate; the driving plate is used to push the closing interlocking shaft; the closing interlocking shaft is used to restrict the operation of the operating mechanism of the external switch after extending out of the housing; the opening interlocking mechanism comprises an opening driving component, a second transmission part, and an opening locking component connected in sequence; the opening driving component is used to drive the second transmission part to rotate; the second transmission part is used to drive the opening locking component to rotate; the opening locking component is used to restrict the rotation of the opening main shaft of the circuit breaker. The present invention realizes overall modularization by arranging the closing interlocking mechanism and the opening interlocking mechanism in the housing. The closing interlocking mechanism and the opening interlocking mechanism can realize the interlocking of the circuit breaker and the disconnecting switch or the grounding switch when opening and closing.

Description

Technical Field

[0001] The invention belongs to the field of high-voltage power distribution, and in particular relates to a high-voltage fixed circuit breaker interlocking device for a wind power generation box transformer and a box transformer. Background Art

[0002] With the development of new energy, wind power generation has become one of the main components in the current new energy field. In the process of wind power generation, it is inevitable to use wind power box transformers.

[0003] During the use of wind power box transformer, it is inevitable that the circuit breaker, disconnector and grounding switch need to be coordinated. In the coordination process, both the accuracy of power supply and safety must be guaranteed. Therefore, wind power box transformer usually needs to set up a chain structure between the circuit breaker, disconnector and grounding switch. However, most of the current chain structures are relatively complex, with poor reliability, and inconvenient installation and adjustment. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a wind power box transformer high-voltage fixed circuit breaker interlocking device, the wind power box transformer high-voltage fixed circuit breaker interlocking device adopts a modular structure as a whole, solving the problems of inconvenient installation and adjustment of the interlocking device and poor reliability. The present invention also proposes a wind power box transformer.

[0005] According to the first aspect of the present invention, the wind turbine box-to-high voltage fixed circuit breaker interlocking device comprises a shell and a closing interlocking mechanism and an opening interlocking mechanism arranged in the shell; the closing interlocking mechanism comprises a driving plate, a first transmission part, and a closing interlocking shaft connected in sequence; the first transmission part is used to connect the circuit breaker closing main shaft and drive the driving plate to rotate; the driving plate is used to push the closing interlocking shaft; the closing interlocking shaft is used to limit the operation of the operating mechanism of the external switch after extending out of the shell; the opening interlocking mechanism comprises an opening driving component, a second transmission part, and an opening locking component connected in sequence; the opening driving component is used to connect the operating mechanism of the external switch and drive the second transmission part to rotate; the second transmission part is used to drive the opening locking component to rotate; the opening locking component is used to limit the rotation of the circuit breaker opening main shaft.

[0006] The wind turbine box-to-high voltage fixed circuit breaker interlocking device according to the embodiment of the present invention has at least the following technical effects: by arranging the closing interlocking mechanism and the opening interlocking mechanism in the housing, the overall modularization is achieved, which is convenient for subsequent installation, adjustment, and maintenance. The closing interlocking mechanism can be interlocked with the closing spindle of the circuit breaker when the disconnector or the earthing switch is closed. The opening interlocking mechanism can be interlocked with the opening spindle of the circuit breaker when the disconnector or the earthing switch is opened. Compared with the traditional connection mechanism, it has the characteristics of high reliability, convenient adjustment, high production and assembly efficiency, and strong applicability.

[0007] According to some embodiments of the present invention, the closing interlocking mechanism further includes a closing link, and the closing link is used to assist the first transmission part in connecting with the circuit breaker closing main shaft.

[0008] According to some embodiments of the present invention, a circle of circular holes for adjusting the installation angle is evenly arranged on the installation end surface of the closing linkage.

[0009] According to some embodiments of the present invention, the first transmission part, the second transmission part and the closing interlocking shaft are all transmission shafts.

[0010] According to some embodiments of the present invention, the closing interlock mechanism further includes a closing reset spring, and the closing reset spring is used to reset the closing interlock shaft.

[0011] According to some embodiments of the present invention, the opening brake driving component adopts a plate-shaped structure.

[0012] According to some embodiments of the present invention, the opening locking component adopts a plate-shaped structure.

[0013] According to some embodiments of the present invention, the opening interlocking mechanism further includes an opening reset spring, and the opening reset spring is used to reset the second transmission part.

[0014] According to some embodiments of the present invention, the shell is made of steel plate.

[0015] A wind power box transformer according to an embodiment of the second aspect of the present invention comprises a wind power box transformer body and any one of the above-mentioned wind power box transformer high-voltage fixed circuit breaker interlocking devices connected to the wind power box transformer body.

[0016] The wind power box transformer according to the embodiment of the present invention has at least the following technical effects: by adding a high-voltage fixed circuit breaker interlocking device to the wind power box transformer, the wind power box transformer body can realize the interlocking of the circuit breaker, the disconnector, and the grounding switch, thereby ensuring the safety of the entire wind power box transformer body and the entire power distribution system during operation. In addition, because the high-voltage fixed circuit breaker interlocking device of the wind power box transformer is a modular structure, it is also convenient for subsequent installation, replacement, and adjustment during the use in conjunction with the wind power box transformer body, and does not require a complex installation and connection process like a traditional interlocking structure.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 1 is a schematic top view of the structure of the embodiment of the first aspect of the present invention (with a circuit breaker section structure attached);

[0020] Figure 2 is a schematic diagram of the axial structure of an embodiment of the first aspect of the present invention;

[0021] Figure 3 yes Figure 1 Middle AA section view;

[0022] Figure 4 It is a schematic diagram of the main structure of an embodiment of the first aspect of the present invention (with a first mounting plate and a second mounting plate added).

[0023] Reference numerals:

[0024] Housing 100, first mounting plate 110, second mounting plate 120,

[0025] The first transmission part 210, the closing interlocking shaft 220, the closing connecting rod 230, the mounting end surface 231, the driving plate 240, and the closing reset spring 250

[0026] The second transmission part 310, the opening lock component 320, the opening drive component 330, the opening reset spring 340,

[0027] Circuit breaker closing main shaft 410, circuit breaker opening main shaft 420, and bent plate 421. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, if there is a description of first, second, third, fourth, etc., it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0031] Reference below Figures 1 to 4 A wind turbine box transformer high voltage fixed circuit breaker interlocking device according to a first embodiment of the present invention is described.

[0032] According to the first aspect of the present invention, the wind power box transformer high-voltage fixed circuit breaker interlocking device comprises a housing 100 and a closing interlocking mechanism and an opening interlocking mechanism arranged in the housing 100; the closing interlocking mechanism comprises a driving plate 240, a first transmission part 210, and a closing interlocking shaft 220 connected in sequence; the first transmission part 210 is used to connect the circuit breaker closing main shaft 410 and drive the driving plate 240 to rotate; the driving plate 240 is used to push the closing interlocking shaft 220; the closing interlocking shaft 220 is used to extend out of the housing 100 to limit the operation of the operating mechanism of the external switch; the opening interlocking mechanism comprises an opening driving part 330, a second transmission part 310, and an opening locking part 320 connected in sequence; the opening driving part 330 is used to connect the operating mechanism of the external switch and drive the second transmission part 310 to rotate; the second transmission part 310 is used to drive the opening locking part 320 to rotate; the opening locking part 320 is used to limit the rotation of the circuit breaker opening main shaft 420.

[0033] refer to Figures 1 to 4 The closing interlocking mechanism and the opening interlocking mechanism are respectively arranged on both sides of the housing 100. In some embodiments of the present invention, the housing 100 adopts a rectangular parallelepiped structure, which is conducive to large-scale production. Its rectangular parallelepiped shape not only meets the large internal space requirements but also facilitates the installation of the subsequent interlocking device of the embodiment of the present invention. The housing 100 can also adopt other shapes as long as it can accommodate the closing interlocking mechanism and the opening interlocking mechanism, for example, it can adopt a cube, a trapezoidal platform, etc.

[0034] refer to Figures 1 to 3, the first transmission part 210 is connected to the circuit breaker closing main shaft 410. When the circuit breaker closing main shaft 410 rotates, it will drive the first transmission part 210 to rotate. The first transmission part 210 will drive the driving plate 240 to rotate, and the driving plate 240 will push the closing interlock shaft 220 to extend out of the housing 100 and extend into the operating mechanism of the disconnector or the earthing switch to limit the operation of the operating mechanism. In some embodiments of the present invention, in order to facilitate the first transmission part 210 to rotate in the housing 100, at least two first transmission support plates are provided on the side plate of the housing 100 on the side where the closing interlock mechanism is located. Through holes are provided on the first transmission support plates, and the through holes can allow the first transmission part 210 to pass through the middle and rotate. There are many ways to rotate. In addition to the above-mentioned methods, the rotatable setting method can be directly completed by using existing mechanical parts such as bearings, but the cost of using bearings is relatively high.

[0035] refer to Figures 1 to 3 , the opening drive component 330 is connected to the second transmission part 310. When the operating mechanism of the disconnector or the grounding switch is in operation, the opening drive component 330 will be driven to rotate. The rotation of the opening drive component 330 further drives the second transmission part 310 to rotate, and the second transmission part 310 drives the opening locking component 320 to rotate until the opening locking component 320 presses the bent plate 421 of the circuit breaker opening main shaft 420, so that the circuit breaker is always in the opening state and cannot be closed. In some embodiments of the present invention, in order to facilitate the rotation of the second transmission part 310 in the housing 100, at least two second transmission support plates are provided on the side plate of the housing 100 on the side where the opening interlocking mechanism is located, and through holes are provided on the second transmission support plates, which allow the second transmission part 310 to pass through the middle and rotate. The second transmission part 310 can also be arranged in a bearing or the like.

[0036] According to the wind turbine box transformer high-voltage fixed circuit breaker interlocking device of the embodiment of the present invention, by arranging the closing interlocking mechanism and the opening interlocking mechanism in the housing 100, the overall modularization is realized, which is convenient for subsequent installation, adjustment and maintenance. The closing interlocking mechanism can be interlocked with the circuit breaker closing main shaft 410 when the disconnector or the earthing switch is closed. The opening interlocking mechanism can be interlocked with the circuit breaker opening main shaft 420 when the disconnector or the earthing switch is opened. Compared with the traditional connection mechanism, it has the characteristics of high reliability, convenient adjustment, high production and assembly efficiency, strong applicability, etc.

[0037] In some embodiments of the invention, the housing 100 is directly installed by welding. However, in order to further improve the modularity and installation convenience of the interlocking device of the embodiment of the invention, in some embodiments of the invention, a mounting assembly is provided on the housing 100. Figure 4A first strip-shaped mounting plate 110 is provided on one side of the housing 100. The first mounting plate 110 is provided with a plurality of mounting holes for mounting. The mounting position of the entire housing 100 can be adjusted through the plurality of mounting holes. A second mounting plate 120 is provided on the other side of the housing 100. The combined use of the first mounting plate 110 and the second mounting plate 120 can effectively improve the stability of the entire housing 100 after installation.

[0038] In some embodiments of the present invention, the closing interlocking mechanism further includes a closing link 230. The closing link 230 is used to assist the first transmission part 210 in connecting with the circuit breaker closing main shaft 410. Figures 1 to 3 The closing link 230 is connected between the first transmission part 210 and the circuit breaker closing main shaft 410. When the circuit breaker closing main shaft 410 rotates, the closing link 230 is driven to rotate. After the closing link 230 rotates, it further drives the first transmission part 210 to rotate. The connection between the first transmission part 210 and the circuit breaker closing main shaft 410 is completed by the closing link 230, which can make the connection more convenient and stable.

[0039] In some embodiments of the present invention, reference Figure 2 The mounting end surface 231 of the closing link 230 is evenly provided with a circle of round holes for adjusting the mounting angle. In some cases, the connection may not be completely aligned, and in this case, the position of the housing 100 needs to be properly adjusted. However, in many cases, the position of the housing 100 is not easy to move. In this case, the round holes provided on the mounting end surface 231 of the closing link 230 can be adjusted to a certain angle, which can reduce a lot of workload compared to adjusting the mounting position of the entire housing 100.

[0040] In some embodiments of the present invention, reference Figures 1 to 3 The first transmission part 210, the second transmission part 310 and the closing interlock shaft 220 all use transmission shafts. The transmission shaft is a standard cylindrical structure. When the first transmission part 210 and the second transmission part 310 use transmission shafts, compared with other special-shaped structures, the continuity and stability of the operation of the closing interlock mechanism and the opening interlock mechanism can be further guaranteed. At the same time, the use of the transmission shaft can effectively reduce the friction of the first transmission part 210 and the second transmission part 310 during the rotation process and the closing interlock shaft 220 during the extension process, which can increase the overall service life of the closing interlock mechanism and the opening interlock mechanism.

[0041] In some embodiments of the present invention, the closing interlock mechanism also includes a closing reset spring 250, and the closing reset spring 250 is used to reset the closing interlock shaft 220. When the circuit breaker is closed, the drive plate 240 will push the closing interlock shaft 220 out, but in some embodiments of the present invention, the drive plate 240 is not connected to the closing interlock shaft 220, so after the closing interlock shaft 220 is pushed out, it cannot automatically return to its initial state. In some embodiments of the present invention, the closing interlock shaft 220 is reset by connecting the closing reset spring 250 to the closing interlock shaft 220. For details, refer to Figures 1 to 3 , at least two support plates for the closing interlock shaft 220 are arranged on the side plate of the housing 100 where the closing interlock shaft 220 is located, and through holes are arranged on the support plates to allow the closing interlock shaft 220 to pass through and ensure that the closing interlock shaft 220 can move forward and backward along its own axis. The closing interlock shaft 220 passes through the closing reset spring 250, and the closing reset spring 250 is arranged between the two support plates, and then the closing interlock shaft 220 is fixed on the closing reset spring 250. In some embodiments, a through hole is opened on the closing interlock shaft 220, and then the through hole is connected with the closing reset spring 250 to complete the fixation. After the closing reset spring 250 is installed, as long as the driving plate 240 is restored to its original position under the drive of the circuit breaker closing main shaft 410, the closing interlock shaft 220 will be restored to its original position under the drive of the closing reset spring 250.

[0042] In some embodiments of the present invention, reference Figures 1 to 3 , the opening drive component 330 adopts a plate-like structure. When the second transmission part 310 adopts a transmission shaft structure, the plate-like structure is arranged parallel to the axis of the second transmission part 310. When the operating mechanism of the disconnector or the earthing switch is in operation, the second transmission part 310 can be driven to rotate by toggling the plate-like structure. The plate-like structure can effectively increase the contact area with the disconnector or the earthing switch. Compared with a triangular, trapezoidal or other special-shaped structures, it can not only ensure the contact area but also improve the stability of the connection between the opening drive component 330 and the second transmission part 310.

[0043] In some embodiments of the present invention, reference Figures 1 to 3 , the gate-opening locking component 320 adopts a plate-like structure. The plate-like structure is arranged perpendicularly to the axis of the second transmission part 310. When the second transmission part 310 rotates, it drives the plate-like structure to move. The plate-like structure can reduce the probability of contact with other mechanisms or components by taking advantage of its thin thickness. At the same time, it can also make use of its wide width to make the plate-like structure stronger and play a more powerful limiting role.

[0044] In some embodiments of the present invention, reference Figure 2The mounting end surface of the opening locking component 320 is evenly provided with a circle of round holes for adjusting the mounting angle. In some cases, the height of the bent plate 421 of the circuit breaker opening main shaft 420 may be inconsistent. At this time, the position of the housing 100 needs to be properly adjusted. However, in many cases, the position movement of the housing 100 is not very convenient, and the engineering workload is large. At this time, the round holes provided on the mounting end surface of the opening locking component 320 can achieve a certain angle adjustment, which can reduce a lot of workload compared to changing the mounting position of the entire housing 100.

[0045] In some embodiments of the present invention, the opening interlocking mechanism also includes an opening reset spring 340, and the opening reset spring 340 is used to reset the second transmission part 310. When the circuit breaker is opened, the operating mechanism of the disconnector or the earthing switch will push the second transmission part 310 to rotate through the opening drive component 330, but the opening drive component 330 is not connected to the operating mechanism of the disconnector or the earthing switch. Therefore, after the second transmission part 310 rotates, it cannot automatically return to its initial state. In some embodiments of the present invention, the resetting of the second transmission part 310 is achieved by connecting the opening reset spring 340 to the second transmission part 310. Specifically, refer to Figures 1 to 4 , at least two support plates of the second transmission part 310 are arranged on the side plate of the housing 100 where the second transmission part 310 is located, and through holes are arranged on the support plates to allow the second transmission part 310 to pass through and ensure that the second transmission part 310 rotates along its own axis. The second transmission part 310 passes through the opening reset spring 340, one end of the opening reset spring 340 is connected to any support plate, and then the second transmission part 310 is fixed to the closing reset spring 250. In some embodiments, the fixing can be completed by opening a through hole in the second transmission part 310 and then connecting the through hole with the opening reset spring 340. After installing the opening reset spring 340, the second transmission part 310 can be restored to its original position after the relevant operation is completed.

[0046] In some embodiments of the present invention, the housing 100 is made of steel plate. The housing 100 is made of steel plate, which can effectively improve the strength of the housing 100 and increase the service life of the entire interlocking device in the embodiments of the present invention.

[0047] The box transformer according to the second embodiment of the present invention comprises a wind power box transformer body and any one of the above-mentioned wind power box transformer high-voltage fixed circuit breaker interlocking devices connected to the wind power box transformer body.

[0048] According to the box transformer of the embodiment of the present invention, by adding the high-voltage fixed circuit breaker interlocking device of the wind power box transformer, the wind power box transformer body can realize the interlocking of the circuit breaker, the disconnector and the grounding switch, thereby ensuring the safety of the entire wind power box transformer body and the entire power distribution system during operation. In addition, because the high-voltage fixed circuit breaker interlocking device of the wind power box transformer is a modular structure, it is also convenient for subsequent installation, replacement and adjustment in the process of using with the wind power box transformer body, and does not require a complicated installation and connection process like the traditional interlocking structure.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, the present invention is not limited to the above embodiments. Those skilled in the art will understand that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wind power box high voltage fixed circuit breaker interlocking device, characterized in that: It comprises a housing and a closing interlocking mechanism and an opening interlocking mechanism arranged in the housing; The closing interlock mechanism comprises a first transmission part, a driving plate, and a closing interlock shaft; one end of the first transmission part is connected to the closing main shaft of the circuit breaker, and the other end of the first transmission part is used to connect the driving plate and drive the driving plate to rotate; the driving plate is used to push the closing interlock shaft; the closing interlock shaft is used to extend out of the housing to limit the operation of the operating mechanism of the external switch; The opening interlocking mechanism includes an opening drive component, a second transmission component, and an opening locking component connected in sequence; the opening drive component is used to connect the operating mechanism of the external switch and drive the second transmission component to rotate; the second transmission component is used to drive the opening locking component to rotate; the opening locking component is used to limit the rotation of the circuit breaker opening main shaft.

2. The wind turbine box high voltage fixed circuit breaker interlocking device according to claim 1 is characterized in that: The closing interlocking mechanism also includes a closing link, which is used to assist the first transmission part in connecting with the circuit breaker closing main shaft.

3. The wind turbine box-type high voltage fixed circuit breaker interlocking device according to claim 2 is characterized in that: The installation end surface of the closing link is evenly provided with a circle of circular holes for adjusting the installation angle.

4. The wind turbine box-to-high voltage fixed circuit breaker interlocking device according to claim 1, characterized in that: The first transmission part, the second transmission part and the closing interlocking shaft all adopt transmission shafts.

5. The wind turbine box-to-high voltage fixed circuit breaker interlocking device according to any one of claims 1 to 4, characterized in that: The closing interlock mechanism further comprises a closing reset spring, and the closing reset spring is used for resetting the closing interlock shaft.

6. The wind turbine box-to-high voltage fixed circuit breaker interlocking device according to claim 1, characterized in that: The opening brake driving component adopts a plate-shaped structure.

7. The wind power box transformer high voltage fixed circuit breaker interlocking device according to claim 1 is characterized in that: The gate opening locking component adopts a plate-shaped structure.

8. The wind power box transformer high voltage fixed circuit breaker interlocking device according to claim 1 is characterized in that: The opening brake interlocking mechanism further comprises an opening brake reset spring, and the opening brake reset spring is used for resetting the second transmission part.

9. The wind power box transformer high voltage fixed circuit breaker interlocking device according to claim 1, characterized in that: The shell is made of steel plate.

10. A wind power box transformer, characterized in that: It comprises a wind power generation box transformer body and a wind power generation box transformer high voltage fixed circuit breaker interlocking device as claimed in any one of claims 1 to 9 connected to the wind power generation box transformer body.

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