A new energy power generation upper and lower interlocking system

Abstract

The present application discloses an upper and lower interlocking system for renewable energy power generation, comprising an upper load switch, a lower grounding switch, an upper interlocking device, and a lower interlocking device, wherein the upper interlocking device is installed on the upper load switch, and the lower interlocking device is installed on the lower grounding switch, and the upper interlocking device and the lower interlocking device cooperate with each other. The beneficial effects of the present application are as follows: under the action of the interlocking mechanism, when the upper load switch is in the closed state, the lower grounding switch cannot be closed; when the lower grounding switch is in the closed position, the upper load switch cannot be closed; in this way, the two switches are closed or opened in a set order, thereby effectively avoiding the occurrence of short circuit faults or fires caused by human operational errors, and greatly improving safety.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to an upper and lower level interlocking system for renewable energy power generation. Background Art

[0002] In renewable energy power generation projects, each transformer or wind turbine is connected hand-in-hand through a load switch cabinet to form a collection line, and the upper and lower load switches must be interlocked. The interlocking principle is as follows: when the upper load switch is in the closed state, the grounding switch in the lower load switch cannot be closed; when the grounding switch in the lower load switch is in the closed position, the upper load switch cannot be closed manually or electrically. However, the existing method is mostly to add a padlock to the switch cabinet door. This method has a large influence on the subjective factors of human beings, that is, there is a possibility of human error. For example, when the upper load switch is closed, the lower grounding switch is mistakenly closed, which will cause a short circuit fault and may even cause a fire. Therefore, a upper and lower interlocking system for renewable energy power generation is proposed to solve the above technical problems. Summary of the Invention

[0003] One of the purposes of this application is to provide a superior-subordinate interlocking system for renewable energy power generation.

[0004] In order to achieve the above objectives, the technical solution adopted in this application is: an upper and lower interlocking system for new energy power generation, including an upper load switch, a lower grounding switch, an upper interlocking device and a lower interlocking device, the upper interlocking device is installed on the upper load switch, and the lower interlocking device is installed on the lower grounding switch, and the upper interlocking device and the lower interlocking device cooperate with each other; when the upper load switch is in a closed state, the lower interlocking device is suitable for locking the lower grounding switch, and the lower grounding switch is in an open state; when the lower grounding switch is in a closed state, the upper interlocking device is suitable for locking the upper load switch, and the upper load switch is in an open state.

[0005] Preferably, the upper interlock device includes an upper lock body and an upper limit module, and the lower interlock device includes a lower lock body and a lower limit module; the upper lock body and the upper limit module are both installed on the upper load switch and cooperate with each other, and the lower lock body and the lower limit module are both installed on the lower grounding switch and cooperate with each other; the upper lock body and the lower lock body are two-in-one lock bodies and share a key; when the upper lock body or the lower lock body is in a closed state, the key cannot be pulled out; when the upper lock body or the lower lock body is in an open state, the key is suitable for free insertion and removal; when the upper lock body is in an open state, the upper limit module is suitable for locking the upper load switch, and at this time the upper load switch is in a disconnected state; when the lower lock body is in an open state, the lower limit module is suitable for locking the lower grounding switch, and at this time the lower grounding switch is in a disconnected state.

[0006] Preferably, a separation and combination indicator plate is installed on the main shaft of the lower-level earthing switch, and a lower operating port is provided on the side of the lower-level earthing switch; the lower limit module includes a lower interlock plate and a guide structure, the lower interlock plate is installed on the lock tongue of the lower lock body, and the lower interlock plate and the separation and combination indicator plate are matched and connected through the guide structure; when the lower lock body is in the open state, the lower interlock plate is suitable for blocking the lower operating port, and the lower interlock plate is suitable for locking the separation and combination indicator plate through the guide structure. At this time, the lower-level earthing switch is in the open state and cannot be operated.

[0007] Preferably, the guide structure includes a guide rod and a guide groove that cooperate with each other, the guide rod is installed on the opening and closing indicator plate, and the guide groove is arranged on the lower interlocking plate; the guide groove includes a connected arc groove and a horizontal straight groove; when the lower lock body is in a closed state, the guide rod cooperates with the arc groove, and at this time the lower-level grounding switch is suitable for opening or closing; when the lower lock body is in an open state, the guide rod cooperates with the straight groove and is offset from the arc groove to achieve locking of the opening and closing indicator plate.

[0008] Preferably, an upper operating port is provided on the side of the upper load switch, and the upper limit module includes an upper interlocking plate, baffle 1 and baffle 2, the upper interlocking plate is elastically and vertically slidably installed on the side of the upper load switch, the baffle 1 is installed on the lock tongue of the upper lock body and cooperates with the upper interlocking plate through a limit assembly, and the baffle 2 is installed on the crank arm in the upper load switch; when the upper lock body is in the open state, the upper interlocking plate is suitable for blocking the upper operating port, and the baffle 1 is suitable for locking the upper interlocking plate through the limit assembly. At this time, The upper load switch is in the open state and cannot be operated; when the upper lock body is in the closed state, the baffle 1 is suitable for releasing the lock of the upper interlock plate through the limit assembly, and then the upper interlock plate is suitable for moving downward to expose the upper operating port for closing operation; at this time, the upper interlock plate is suitable for locking the baffle 1 through the limit assembly so that the upper lock body remains in the closed state; when the upper load switch is in the closed state, the baffle 2 is suitable for limiting the lock tongue of the upper lock body under the action of the crank arm so that the upper lock body remains in the closed state.

[0009] Preferably, the limit assembly includes a limit slot and a limit block, the limit slot is horizontally arranged on the baffle 1, and the limit block is horizontally arranged on the upper interlocking plate; when the upper lock body is in the open state, the limit slot cooperates with the limit block to achieve vertical locking of the upper interlocking plate; when the upper lock body is in the closed state, the limit slot is suitable for separating from the limit block under the drive of the baffle 1, thereby releasing the lock of the upper interlocking plate; when the upper interlocking plate moves downward, the limit block cooperates with the side of the baffle 1, thereby achieving locking of the baffle 1.

[0010] Preferably, a travel switch is provided on the side of the upper load switch; when the upper lock body is in the open state, the baffle 1 cooperates with the travel switch to put the electric closing circuit connected to the travel switch in an open circuit state.

[0011] Preferably, a trip knob is provided on the side of the upper load switch, and the trip knob and the upper interlocking plate are coordinated through a limiting structure; when the upper load switch is in the trip state, the upper interlocking plate is suitable for locking the trip knob through the limiting structure.

[0012] Preferably, both sides of the opening knob are flat, and the limiting structure includes a card slot, which is arranged on the side of the upper interlocking plate; the flat edge of the opening knob is engaged with the card slot, thereby achieving locking of the opening knob.

[0013] Preferably, a screw hole is provided on the side of the separation and combination indicator plate, and a bolt is installed in the screw hole to form the guide rod.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention is provided with an interlocking mechanism. Under the action of the interlocking mechanism, when the upper load switch is in the closed state, the lower grounding switch cannot be closed; when the lower grounding switch is in the closed position, the upper load switch cannot be closed. In this way, the two switches are closed or opened in a set order, thereby effectively avoiding short circuit faults or fires caused by human operational errors, and greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the lower-level grounding switch of the present invention.

[0017] Figure 2 This is a schematic diagram of the closed state of the lower-level grounding switch of the present invention.

[0018] Figure 3 This is a schematic diagram of the lower-level grounding switch in the open state of the present invention.

[0019] Figure 4 This is a schematic diagram of the lower lock body of the present invention in an open state.

[0020] Figure 5 It is a schematic diagram of the guiding structure of the present invention.

[0021] Figure 6 It is a schematic diagram of the specific structure of the guide groove of the present invention.

[0022] Figure 7 It is a schematic diagram of the specific structure of the separation and combination indicator plate of the present invention.

[0023] Figure 8 This is a schematic diagram of the principle of opening and closing the two-in-one mechanical lock of the present invention.

[0024] Figure 9 It is a schematic diagram of the overall structure of the upper load switch of the present invention.

[0025] Figure 10 This is a side structural diagram of the upper load switch of the present invention.

[0026] Figure 11 This is a schematic diagram of the upper load switch opening state of the present invention.

[0027] Figure 12 This is a schematic diagram of the closed state of the lower lock body of the present invention.

[0028] Figure 13It is a schematic diagram of the cooperation between the upper interlocking plate and baffle 1 of the present invention.

[0029] Figure 14 It is a schematic diagram of the cooperation between the upper interlocking plate and the opening knob of the present invention.

[0030] Figure 15 This is a schematic diagram of the upper load switch in the closed state of the present invention.

[0031] Figure 16 This is a schematic diagram of the upper interlocking plate of the present invention after being reset.

[0032] Figure 17 It is a schematic diagram of the coordination between the crank arm, baffle 2, upper lock body, baffle 1 and travel switch of the present invention.

[0033] In the figure: 1, lower grounding switch; 101, main shaft; 2, upper load switch; 201, crank arm; 3, lower lock body; 4, upper lock body; 5, lower limit module; 501, lower interlock plate; 502, guide structure; 5021, guide groove; 50211, arc groove; 50212, linear groove; 5022, guide rod; 6, upper limit module; 601, upper interlock plate; 602, baffle 1; 60 3. Baffle 2; 7. Opening and closing indicator plate; 701. Arc plate; 702. Indicator; 8. Lower operating port; 9. Bolt; 10. Lock tongue; 11. Key; 12. Reset spring; 13. Upper operating port; 14. Opening knob; 15. Limit assembly; 1501. Limit groove; 1502. Limit block; 16. Limit structure; 1601. Slot; 17. Round groove; 18. Flat mouth; 19. Travel switch. DETAILED DESCRIPTION

[0034] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating the orientation and position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0037] One of the preferred embodiments of this application is as follows: Figures 1 to 17 As shown, a superior-subordinate interlocking system for renewable energy power generation includes an superior load switch 2, a subordinate grounding switch 1, and an interlocking mechanism. The superior load switch 2 is adapted to be coupled to the subordinate grounding switch 1 via the interlocking mechanism. During switching operations, the superior load switch 2 and the subordinate grounding switch 1 are opened and closed in a predetermined sequence under the action of the interlocking mechanism.

[0038] It is understood that the upper load switch 2 and the lower grounding switch 1 are interlocked via an interlocking mechanism. For example, when the upper load switch 2 is closed, the grounding switch in the lower load switch (hereinafter referred to as the lower grounding switch 1) cannot be closed. When the lower grounding switch 1 is closed, the upper load switch cannot be closed. This allows the two switches to close or open in a predetermined sequence, effectively preventing short circuits or fires caused by human error and significantly improving safety.

[0039] Specifically, the interlock mechanism includes an upper interlocking device and a lower interlocking device. The upper interlocking device is installed on the upper load switch 2, and the lower interlocking device is installed on the lower grounding switch 1. The upper and lower interlocking devices cooperate with each other. It can be understood that when the upper load switch 2 is in the closed state, the lower interlocking device is suitable for locking the lower grounding switch 1, and the lower grounding switch 1 is in the open state. When the lower grounding switch 1 is in the closed state, the upper interlocking device is suitable for locking the upper load switch 2, and the upper load switch 2 is in the open state.

[0040] As a further description of the above embodiment: Figure 2 、 Figure 8 and Figure 11 As shown, the upper interlocking device includes an upper lock body 4 and an upper limit module 6, and the lower interlocking device includes a lower lock body 3 and a lower limit module 5. The upper lock body 4 and the upper limit module 6 are both installed on the upper load switch 2 and cooperate with each other, and the lower lock body 3 and the lower limit module 5 are both installed on the lower grounding switch 1 and cooperate with each other. The upper lock body 4 and the lower lock body 3 are two-in-one lock bodies, and both share a key 11 (of course, this is also well known to those skilled in the art). Specifically, as Figure 7 As shown in (a), when the upper lock body 4 or the lower lock body 3 is in the closed state, the key 11 cannot be pulled out; Figure 7 As shown in (b), the key 11 can be freely inserted and removed only when the upper lock body 4 or the lower lock body 3 is in the open state.

[0041] It is understood that when the upper lock body 4 is open, the upper limit module 6 can lock the upper load switch 2, and the upper load switch 2 is now in the open state. When the lower lock body 3 is open, the lower limit module 5 can lock the lower grounding switch 1, and the lower grounding switch 1 is now in the open state. In other words, as long as the key 11 can be freely inserted and removed from the lock body of a switch, that switch will be in the open state. Since both lock bodies share the same key 11, this ensures that at least one of them is in the open state. This means that the upper and lower interlocked switches will not be closed at the same time, further ensuring the safety of personnel and lines.

[0042] In one embodiment of the present application, Figures 2 to 4 As shown, an opening / closing indicator plate 7 is mounted on the main shaft 101 of the lower grounding switch 1. Specifically, the opening / closing indicator plate 7 is connected to the main shaft of the load switch mechanism, which is in turn connected to the main shaft of the grounding switch. A lower operating port 8 is provided on the side of the lower grounding switch 1. Specifically, the lower operating port 8 is a manual operating port. Inserting an operating handle into the lower operating port 8 allows the lower grounding switch 1 to be opened or closed by rotating the operating handle. The lower limit module 5 includes a lower interlock plate 501 and a guide structure 502. The lower interlock plate 501 is mounted on the lock tongue 10 of the lower lock body 3. The lower interlock plate 501 and the opening / closing indicator plate 7 are connected by the guide structure 502.

[0043] Specifically, assuming that the lower grounding switch 1 is in the open state at this time, Figure 3 As shown, the lower lock body 3 is in the closed state and the key 11 is located on the lower lock body 3. At this time, if you want to pull out the key 11, you need to turn the key 11 to open the lower lock body 3. During the turning of the key 11, the lock tongue 10 will drive the lower interlocking plate 501 to move, as shown in FIG. Figure 4 As shown, the lower interlock plate 501 blocks the lower operating port 8, meaning the operating handle cannot be inserted into the lower operating port 8. Furthermore, the lower interlock plate 501 can lock the on / off indicator plate 7 via the guide structure 502. Since the on / off indicator plate 7 is connected to the main shaft 101 of the lower earthing switch 1, this can also be understood as locking the main shaft 101. Thus, after the key 11 is removed, the lower earthing switch 1 remains in the open state and cannot be operated. The key 11 can then be inserted into the upper load switch 2 for operation.

[0044] The present application does not specifically limit the structure of the guide structure 502. A specific embodiment is provided below for reference:

[0045] like Figure 5 and Figure 6As shown, the guide structure 502 includes a guide rod 5022 and a guide groove 5021 that cooperate with each other. The guide rod 5022 is installed on the opening and closing indicator plate 7, and the guide groove 5021 is set on the lower interlocking plate 501. The guide groove 5021 includes a connected arc groove 50211 and a horizontal linear groove 50212.

[0046] It is understandable that if Figure 2 and Figure 3 As shown, when the lower lock body 3 is in the closed state (i.e. the key 11 cannot be removed), the guide rod 5022 cooperates with the arc groove 50211, i.e. at this time the lower grounding switch 1 can be opened or closed; and during the opening and closing process, the guide rod 5022 will rotate along the arc groove 50211. When the lower lock body 3 is opened and the key 11 is removed, the lower grounding switch 1 must be in the open state; the reason is: Figure 2 As shown, at this time, the lower grounding switch 1 is in the closed state, and the guide rod 5022 on the opening and closing indicator plate 7 is located at the rightmost end of the arc groove 50211, that is, the guide rod 5022 will block the left movement of the lower interlocking plate 501. Figure 3 As shown, when the lower-level grounding switch 1 is opened, the opening and closing indicator plate 7 will rotate, thereby driving the guide rod 5022 to move to the leftmost end of the arc-shaped groove 50211. At this time, the guide rod 5022 and the straight groove 50212 correspond to each other, and the straight groove 50212 provides an escape space for the guide rod 5022. That is, at this time, the lower interlocking plate 501 can move to the left under the action of the lock tongue 10, so that the lower-level grounding switch 1 is in the open state after the key 11 in the lower-level grounding switch 1 is pulled out.

[0047] It should be noted that after the lower lock body 3 is opened, the lower interlock plate 501 can not only block the lower operating port 8 so that the lower grounding switch 1 cannot be operated, but also lock the opening and closing indicator plate 7. Figure 4 As shown, after the lower interlocking plate 501 moves to the left, the guide rod 5022 cooperates with the straight groove 50212, and the guide rod 5022 and the arc groove 50211 are in a misaligned state, which will interfere with the rotation of the opening and closing indicator plate 7, thereby achieving the locking of the opening and closing indicator plate 7; through the double limiting effect, it can be stably ensured that the lower-level grounding switch 1 is in the open state after the key 11 is pulled out.

[0048] like Figure 7As shown, a screw hole is provided on the side of the opening / closing indicator plate 7, and a bolt 9 is installed in the screw hole to form a guide rod 5022. That is, the connection method between the bolt 9 and the screw hole is simple and reliable, which facilitates subsequent installation and maintenance. The opening / closing indicator plate 7 includes an arc-shaped plate 701 and an indicator member 702. The indicator member 702 is provided on the side of the arc-shaped plate 701, and the indicator member 702 is connected to the main shaft 101 of the lower-level grounding switch 1. When the main shaft 101 rotates, the indicator member 702 moves accordingly, thereby intuitively displaying the opening / closing state of the lower-level grounding switch 1. This design not only improves the convenience of operation, but also enables staff to quickly and accurately judge the switch status, further improving the safety and reliability of the system.

[0049] In one embodiment of the present application, Figures 9 to 17 As shown, an upper operating port 13 is provided on the side of the upper load switch 2, and the upper limit module 6 includes an upper interlocking plate 601, baffle 1 602 and baffle 2 603. The upper interlocking plate 601 (through the reset spring 12) is elastically and vertically slidably installed on the side of the upper load switch 2, baffle 1 602 is installed on the lock tongue 10 (one end) of the upper lock body 4 and cooperates with the upper interlocking plate 601 through the limit assembly 15, and baffle 2 603 is installed on the crank arm 201 in the upper load switch 2.

[0050] It is understandable that if Figure 11 As shown, when the upper lock body 4 is in the open state (i.e., the key 11 can be freely inserted and removed), the upper interlock plate 601 can block the upper operating port 13 (the dotted line portion in the figure represents the upper operating port 13), and the baffle plate 1 602 can lock the upper interlock plate 601 via the limit assembly 15. At this time, the upper load switch 2 is in the open state and cannot be operated. In other words, after the key 11 is removed from the upper lock body 4, the upper load switch 2 is in the open state, and the limit assembly 15 locks the open state, making the upper load switch 2 in the open state inoperable, thereby preventing operator error.

[0051] like Figure 12 As shown, when the upper lock body 4 is in the closed state (i.e., the key 11 cannot be removed), the baffle 1 602 releases the lock on the upper interlock plate 601 via the limit assembly 15. The operator can then move the upper interlock plate 601 downward to expose the upper operating port 13 and perform the closing operation. At this time, the upper interlock plate 601 can lock the baffle 1 602 via the limit assembly 15 to keep the upper lock body 4 in the closed state. That is, the key 11 cannot be turned to turn the upper lock body 4 from the closed state to the open state.

[0052] It should be noted that if Figure 13As shown, a circular groove 17 is provided on the side of the upper interlocking plate 601, which is matched with the upper operating port 13. Under the action of the elastic force of the upper interlocking plate 601, the circular groove 17 and the upper operating port 13 are in a misaligned state, that is, the upper interlocking plate 601 blocks the upper operating port 13. When operation is required (of course, the upper interlocking plate 601 has been unlocked at this time), the staff only needs to slide the upper interlocking plate 601 downward to the extreme position, and then the circular groove 17 and the upper operating port 13 are in a corresponding state (as shown in FIG. Figure 15 Finally, insert the operating handle into the upper operating port 13 to perform opening and closing operations.

[0053] like Figure 17 As shown, when the upper load switch 2 is in the closed state, the second baffle 603, under the action of the crank arm 201, can limit the lock tongue 10 (the other end) of the upper lock body 4, so that the upper lock body 4 remains in the closed state. That is, the key 11 cannot be turned to turn the upper lock body 4 from the closed state to the open state. In other words, only when the upper load switch 2 is opened, the second baffle 603, driven by the crank arm 201, will separate from the other end of the lock tongue 10, and then it can be removed from the upper lock body 4 after the key 11 is opened. This ensures that the upper load switch 2 is not opened and the lower grounding switch 1 cannot be closed.

[0054] The present application does not specifically limit the structure of the position limiting component 15. A specific embodiment is provided below for reference:

[0055] like Figure 13 As shown, the limiting assembly 15 includes a limiting groove 1501 and a limiting block 1502. The limiting groove 1501 is horizontally arranged on the baffle 1 602; the limiting block 1502 is horizontally arranged on the upper interlocking plate 601. Specifically, the limiting block 1502 is formed by the flange bent at the top of the upper interlocking plate 601.

[0056] It is understandable that if Figure 11 and Figure 13 As shown, when the upper lock body 4 is in the open state, the limiting groove 1501 cooperates with the limiting block 1502 to vertically lock the upper interlocking plate 601, that is, the upper interlocking plate 601 cannot slide downward. When the upper lock body 4 is in the closed state, the limiting groove 1501 on the baffle 1 602 moves horizontally under the drive of the lock tongue 10 and dislocates from the limiting block 1502, thereby releasing the lock of the upper interlocking plate 601, that is, the upper interlocking plate 601 can slide downward under the drive of an external force.

[0057] It should be noted that if the upper interlock plate 601 moves downward without returning to its original position, the upper lock body 4 cannot be switched from the closed state to the open state. This is because the stop block 1502 and the side of the baffle 1 602 are engaged, which means that the stop block 1502 interferes with the leftward movement of the upper interlock plate 601. Therefore, only after the upper interlock plate 601 moves upward under the action of the return spring 12 and the stop block 1502 and the stop slot 1501 are engaged, can the baffle 1 602 move leftward.

[0058] It should be noted that when the upper load switch 2 is opened, it can not only be opened manually but also automatically, which is common knowledge known to those skilled in the art. The mechanical lock structure described above is limited to lock for manual opening, so locking the automatic opening of the upper load switch 2 is also an urgent problem to be solved.

[0059] Therefore, in order to solve the above technical problems, in this embodiment, Figure 11 、 Figure 12 、 Figure 15 and Figure 16 As shown, a travel switch 19 is provided on the side of the upper load switch 2. It is understandable that Figure 11 As shown, when the upper lock body 4 is in the open state, the baffle 1 602 and the limit switch 19 are in contact with each other, thereby making the electric closing circuit electrically connected to the limit switch 19 in the disconnected state, so that the electric closing circuit can be locked, so that this mechanical lock can achieve dual locking of the manual and electric closing of the upper load switch 2, greatly improving safety. Figure 15 and Figure 16 As shown, when the upper lock body 4 is in the closed state, the baffle 602 will be in a separated state from the limit switch 19, that is, the baffle 602 loses its cooperation with the limit switch 19, so that the electric closing circuit in the upper load switch 2 can be energized normally, that is, the upper load switch 2 can perform the electric closing operation.

[0060] Furthermore, the upper load switch 2 is opened by the opening knob 14 on its side, and the opening knob 14 can cooperate with the upper interlock plate 601 through the limiting structure 16. It is understood that when the upper load switch 2 is in the open state, the upper interlock plate 601 can lock the opening knob 14 through the limiting structure 16.

[0061] Specifically, such as Figure 14As shown, the original trip knob 14 is a cylindrical structure, and the current design provides flat openings 18 on both sides of the trip knob 14; and the limiting structure 16 includes a slot 1601, which is provided at the side of the upper interlocking plate 601. Specifically, the slot 1601 includes a circular slot on the upper part and a rectangular slot on the lower part. It can be understood that, as Figure 11 As shown, when the upper interlock plate 601 is locked, the flat opening 18 of the trip knob 14 and the rectangular groove are engaged, thereby achieving the limit locking of the trip knob 14, and the upper operating port 13 is also blocked by the upper interlock plate 601. When the upper interlock plate 601 is unlocked and moved down to the limit position, as shown in FIG. Figure 15 As shown, the trip knob 14 and the circular groove are matched with each other, that is, the trip knob 14 can rotate freely at this time, thereby realizing electric tripping; of course, the upper operating port 13 and the circular groove 17 are also matched with each other at this time, thereby also being able to perform manual tripping operation.

[0062] The main function of this invention is to achieve interlocking between upper and lower switches. The interlocking principle is as follows: when the upper load switch 2 is in the closed state, the lower grounding switch 1 cannot be closed. When the lower grounding switch 1 is in the closed position (state), the upper load switch 2 cannot be closed manually or electrically.

[0063] In the lower grounding switch 1:

[0064] ① Such as Figure 2 As shown, the lower grounding switch 1 is in the closed state. At this time, the lower interlock plate 501 is blocked by the guide rod 5022 (i.e., bolt 9) on the opening and closing indicator plate 7. The mechanical lock cannot be opened and the lower interlock plate 501 cannot be moved to the left. At this time, the key 11 on the "two-out-of-one mechanical lock" cannot be pulled out. Figure 3 As shown, insert the operating handle into the lower operating port 8, rotate the operating handle counterclockwise to open the lower grounding switch 1, and at the same time, the bolt 9 in the opening and closing indicator plate 7 also moves to the left end position of the linear slot 50212. Figure 4 As shown, the key 11 on the lower lock body 3 is rotated and the lower lock body 3 is opened. At this time, the key 11 on the "two-in-one mechanical lock" can be pulled out, and the lower interlock plate 501 blocks the lower operating port 8. At this time, the grounding operating mechanism cannot be operated.

[0065] In the upstream load switch 2:

[0066] ① Such as Figure 11 As shown, this is the state of the mechanism when the upper load switch 2 is in the open state. At this time, the baffle 1 602 and the upper interlocking plate 601 are in the locked state, that is, the upper operating port 13 is blocked by the upper interlocking plate 601 and cannot be manually operated. At the same time, the baffle 1 602 triggers the limit switch 19 to disconnect the electric closing circuit, and electric operation is also impossible. Figure 12 As shown, the key 11 removed from the "two-out-of-one mechanical lock" (i.e., lower lock body 3) on the lower grounding switch 1 is inserted into the "two-out-of-one mechanical lock" (i.e., upper lock body 4) of the upper load switch 2, and the mechanical lock is turned to the closed state. The baffle 1 602 moves to the right along with the mechanical lock. At this time, the baffle 1 602 and the upper interlock plate 601 are disengaged, and the limit switch 19 is in the untriggered state and can be electrically operated. Pulling the upper interlock plate 601 downwards will expose the manual upper operating port 13, and manual operation can be performed after inserting the operating handle. ③ As shown Figure 15 As shown, the upper load switch 2 is operated to close; then the operating handle is pulled out, and the upper interlock plate 601 moves upward under the action of the reset spring 12 (as shown Figure 16 As shown), after the upper load switch 2 is closed, the crank arm 201 rotates to Figure 17 position, thereby blocking the lock tongue 10 (also called lock rod) of the upper lock body 4 so that the mechanical lock cannot be turned to the open position, thereby achieving the function of the upper load switch 2 not being opened and the lower grounding switch 1 not being closed.

[0067] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A new energy power generation upper and lower level interlocking system, characterized in that: include: An upper load switch, a lower grounding switch, an upper interlocking device, and a lower interlocking device, wherein the upper interlocking device is installed on the upper load switch, the lower interlocking device is installed on the lower grounding switch, and the upper interlocking device and the lower interlocking device cooperate with each other; When the upper load switch is in the closed state, the lower interlocking device is suitable for locking the lower grounding switch, and the lower grounding switch is in the open state; When the lower-level grounding switch is in a closed state, the upper interlocking device is suitable for locking the upper-level load switch, and the upper-level load switch is in an open state; The upper interlock device includes an upper lock body and an upper limit module, and the lower interlock device includes a lower lock body and a lower limit module; the upper lock body and the upper limit module are both installed on the upper load switch and cooperate with each other, and the lower lock body and the lower limit module are both installed on the lower grounding switch and cooperate with each other; the upper lock body and the lower lock body are two-in-one lock bodies and share a key; when the upper lock body or the lower lock body is in the closed state, the key cannot be pulled out; when the upper lock body or the lower lock body is in the open state, the key is suitable for free insertion and removal; when the upper lock body is in the open state, the upper limit module is suitable for locking the upper load switch, and at this time the upper load switch is in the open state; when the lower lock body is in the open state, the lower limit module is suitable for locking the lower grounding switch, and at this time the lower grounding switch is in the open state; A separation indicator plate is mounted on the main shaft of the lower-level earthing switch, and a lower operating port is provided on the side of the lower-level earthing switch; the lower limit module includes a lower interlock plate and a guide structure, the lower interlock plate is mounted on the lock tongue of the lower lock body, and the lower interlock plate and the separation indicator plate are cooperatively connected via the guide structure; when the lower lock body is in the open state, the lower interlock plate is adapted to block the lower operating port, and the lower interlock plate is adapted to lock the separation indicator plate via the guide structure, at which time the lower-level earthing switch is in the open state and cannot be operated; The guide structure includes a guide rod and a guide groove that cooperate with each other. The guide rod is mounted on the opening and closing indicator plate, and the guide groove is provided on the lower interlocking plate. The guide groove includes a connected arcuate groove and a horizontal linear groove. When the lower lock body is in the closed state, the guide rod cooperates with the arcuate groove, and the lower-level grounding switch is suitable for opening or closing. When the lower lock body is in the open state, the guide rod cooperates with the linear groove and is offset from the arcuate groove to achieve locking of the opening and closing indicator plate. When the upper lock body is in the open state, the upper interlock plate is adapted to block the upper operating port, and the baffle plate is adapted to lock the upper interlock plate through the limit assembly, at which time the upper load switch is in the open state and cannot be operated; when the upper lock body is in the closed state, the baffle plate is adapted to release the lock of the upper interlock plate through the limit assembly, and then the upper interlock plate is adapted to move downward and expose the upper operating port for closing operation; At this time, the upper interlocking plate is suitable for locking the baffle 1 through the limiting assembly, so that the upper lock body remains in a closed state; when the upper load switch is in a closed state, the baffle 2 is suitable for limiting the lock tongue of the upper lock body under the action of the crank arm, so that the upper lock body remains in a closed state; The limit assembly includes a limit slot and a limit block, the limit slot is horizontally arranged on the baffle 1, and the limit block is horizontally arranged on the upper interlocking plate; when the upper lock body is in the open state, the limit slot cooperates with the limit block to achieve vertical locking of the upper interlocking plate; when the upper lock body is in the closed state, the limit slot is suitable for separating from the limit block under the drive of the baffle 1, thereby releasing the lock of the upper interlocking plate; when the upper interlocking plate moves downward, the limit block cooperates with the side of the baffle 1, thereby achieving locking of the baffle 1.

2. The upper and lower interlocking system for renewable energy power generation according to claim 1, characterized in that: A travel switch is provided on the side of the upper load switch; when the upper lock body is in the open state, the baffle 1 cooperates with the travel switch to put the electric closing circuit connected to the travel switch into an open circuit state.

3. The upper and lower interlocking system for renewable energy power generation according to claim 2, characterized in that: A trip knob is provided on the side of the upper load switch, and the trip knob cooperates with the upper interlocking plate through a limiting structure; when the upper load switch is in the trip state, the upper interlocking plate is suitable for locking the trip knob through the limiting structure.

4. The upper and lower interlocking system for renewable energy power generation according to claim 3, characterized in that: Both sides of the opening knob are flat, and the limiting structure includes a card slot, which is arranged on the side of the upper interlocking plate; the flat edge of the opening knob is engaged with the card slot, thereby locking the opening knob.

5. The upper and lower level interlocking system for renewable energy power generation according to claim 1, characterized in that: The side of the separation and combination indicator plate is provided with a screw hole, and a bolt is installed in the screw hole to form the guide rod.

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