Delay interlocking protection high-voltage power distribution cabinet and method based on smart power grid

Abstract

The invention discloses a delay interlocking protection high-voltage power distribution cabinet and method based on an intelligent power grid, and relates to the technical field of high-voltage power distribution cabinets, the delay interlocking protection high-voltage power distribution cabinet comprises a cabinet body, electrical elements in the cabinet body, a cabinet door rotatably installed on the cabinet body, and a power supply connection module rotatably provided with a pull switch; the power supply connection module is fixedly installed in the cabinet body, and the side edge of the cabinet body is provided with a strip-shaped through hole. The device has the advantages that when interlocking protection between the cabinet door and the power supply connecting module is carried out, the cabinet door is opened after a power supply is turned off, the safety is higher, meanwhile, a pull switch is locked after the cabinet door is opened, the situation that the power supply connecting module is started due to mistaken touch is avoided, in addition, after the cabinet door is opened, opening and closing of the power supply connecting module can be controlled freely, and the safety is higher. In addition, after the power supply is turned off, the residual current in the electrical elements can be reduced by grounding and increasing the resistance in the circuit loop, and the circuit protection device has the advantage of protecting the circuit.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power distribution cabinets, and in particular to a delayed interlocking protection high-voltage power distribution cabinet and method based on a smart grid. Background Art

[0002] High-voltage distribution cabinet interlocking is a protective measure designed to ensure the safety of each device in the distribution system during operation. The interlocking mechanism controls the switch operation of the equipment through hardware or software means to prevent unsafe operation combinations and ensure the safety of equipment and personnel. Common high-voltage distribution cabinet interlocking mainly includes mechanical interlocking and electrical interlocking.

[0003] In the existing distribution cabinet, the power switch and the opening and closing of the cabinet door are two independent operation steps, and there are no interlocking protection measures, which poses certain safety hazards. Therefore, the announcement number CN118073970B discloses a high-voltage distribution cabinet with delayed interlocking protection for a smart grid and a method of use, which includes a cabinet body and a cabinet door arranged on one side of the cabinet body, and the cabinet door is equipped with a lock; the high-voltage distribution cabinet with delayed interlocking protection for the smart grid also includes: a partition, which is arranged in the cabinet body, dividing the cabinet body into a control room and a distribution room, and an operating shaft is movable in the control room, and the operating shaft is connected to an operating mechanism arranged in the cabinet body. When the operating shaft rotates, it can drive the operating mechanism to switch the distribution cabinet from a grounded state to a powered state or from a powered state to a grounded state.

[0004] When the above-mentioned distribution cabinet switches the state of the distribution cabinet through the operating shaft, the operating shaft can drive the transverse movement mechanism to drive the ejection drive mechanism to move, and each time the state of the distribution cabinet is switched, the ejection drive mechanism can release the elastic potential energy, prompting the locking mechanism to release the locked state of the cabinet door or perform a locking action on the cabinet door. The cabinet door can only be opened when the distribution cabinet is in a power-on state, and in the process of opening the cabinet door, the elastic trigger mechanism can lock the operating shaft, so that when the cabinet door is in an open state, the distribution cabinet cannot switch the state. Therefore, through the mutual cooperation between various mechanisms and components, delayed interlocking can be achieved between the operating shaft and the cabinet door, ensuring the safety of actual operation and preventing accidents caused by misoperation of staff during maintenance.

[0005] When the above-mentioned distribution cabinet is performing interlocking protection, the distribution cabinet is in a switching state and the cabinet door is locked. When the cabinet door is rotated, the switching state of the distribution cabinet is locked. However, this interlocking protection has the following problems: when the cabinet door is in an open state, the distribution cabinet cannot switch states. In this way, when performing maintenance and inspection on the internal components of the distribution cabinet, the maintenance and inspection cannot be switched, which makes maintenance and inspection difficult. After the maintenance and inspection, the cabinet door needs to be closed to test the inspection results. The cabinet door needs to be opened and closed frequently many times, which is cumbersome to operate and reduces the testing efficiency of the inspection results. Secondly, when the state is switched after the cabinet door is opened, there is still some current in the electrical components in the distribution cabinet. Once the cabinet door is opened for maintenance and inspection, there is a probability of electric shock, and it will also cause certain damage to the circuit loop.

[0006] Therefore, a new type of delayed interlocking protection high-voltage distribution cabinet and method based on smart grid can be used to solve the shortcomings of the existing technology. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the prior art and to propose a delayed interlocking protection high-voltage distribution cabinet and method based on a smart grid.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A delayed interlocking protection high-voltage power distribution cabinet based on a smart grid comprises a cabinet body, electrical components inside the cabinet body, a cabinet door rotatably mounted on the cabinet body, and a power connection module rotatably mounted with a switch;

[0010] The power connection module is fixedly installed inside the cabinet, a strip-shaped through hole is opened on the side of the cabinet, the pull switch passes through and extends out of the strip-shaped through hole, a rotating shaft is rotatably installed inside the cabinet, and a one-way component is installed between the rotating shaft and the pull switch;

[0011] A door opening locking assembly is installed between the rotating shaft and the cabinet door, and the door opening locking assembly is used to lock the cabinet door. A frame is fixedly installed on the outside of the cabinet, and a linkage assembly cooperating with the rotating shaft is installed on the frame. The linkage assembly includes a plurality of rotating rods rotatably installed on the frame, a grounding assembly cooperating with other electrical components inside the cabinet is installed on the frame, a switching assembly cooperating with the power connection module is installed on the frame, and a locking assembly cooperating with the cabinet door for locking the pull switch is installed on the frame.

[0012] Preferably, the one-way component includes a worm gear fixedly mounted on a rotating shaft, a pillar is fixedly mounted on the pull switch, the pull switch drives the pillar to rotate around the central axis of the pillar, the pillar controls the opening and closing of the power connection module, and a worm matched with the worm gear is fixedly mounted on the pillar.

[0013] Preferably, the door opening and locking assembly includes a second card block fixedly mounted on the rotating shaft, and a first card block matching with the second card block is fixedly mounted on the cabinet door, and both the first card block and the second card block are of L-shaped design.

[0014] Preferably, the cabinet door and the cabinet body rotate via a shaft, the shaft and the cabinet body are fixedly connected, the shaft and the cabinet door are rotationally connected, a spring roll is fixedly installed between the cabinet door and the shaft, and a door lock matching the cabinet body is installed on the cabinet door.

[0015] Preferably, the linkage assembly includes a rotating shaft that penetrates and is rotatably mounted on the side of the cabinet, the rotating shaft and the rotating shaft are connected via a bevel gear set, a rotating rod 1 is rotatably mounted on the frame, a gear 1 is fixedly mounted on the rotating rod 1, and the rotating shaft and the rotating rod 1 are connected via a gear set;

[0016] A rotating rod 2 is rotatably mounted on the frame, a gear 1 is fixedly mounted on the rotating rod 1, a gear 2 meshing with the gear 1 is fixedly mounted on the rotating rod 2, a toothed disc is fixedly mounted on the rotating rod 2, and a gear cylinder meshing with the toothed disc is fixedly mounted on each of the rotating rods.

[0017] Preferably, the grounding component includes a grounding block fixedly mounted on the outer side of the cabinet, the grounding block is connected to the electrical components inside the cabinet, a connecting rod is slidably mounted on the outer side of the cabinet, a second conductive block matching the grounding block is fixedly mounted on the connecting rod, a grounding wire is fixedly connected to the second conductive block, a tension spring is fixedly mounted between the connecting rod and the cabinet, a first magnetic plate is fixedly mounted on the connecting rod, a second magnetic plate mutually repelling the first magnetic plate is fixedly mounted on one of the rotating rods, and a second cover matching the second magnetic plate is fixedly mounted on the frame.

[0018] Preferably, the adapter assembly includes a first connector fixedly mounted on the outer side of the cabinet, the first connector is connected to the power connection module through an electric wire, a connecting rod is slidably mounted on the outer side of the cabinet, a first conductive block is fixedly mounted on the connecting rod, a reset spring is fixedly mounted between the connecting rod and the cabinet, a high-resistance resistor is fixedly mounted on the frame, the first conductive block is connected to the high-resistance resistor through a wire, a third magnetic plate is fixedly mounted on the connecting rod, a fourth magnetic plate matching the third magnetic plate is fixedly mounted on another rotating rod, an adjustment knob is mounted on the high-resistance resistor, and the corresponding rotating rod and the adjustment knob are fixedly connected.

[0019] Preferably, the locking assembly includes a box body fixedly mounted on the frame body, a first rack is slidably mounted inside the box body, a first gear meshing with the first rack is fixedly mounted on the rotating rod, a locking wheel is fixedly mounted on the rotating rod, the locking wheel is rotatably connected to the box body, the locking wheel consists of a wheel body and a locking structure, the locking structure is mounted on the box body, the wheel body is locked by the locking structure, a locking mechanism matching the first rack is mounted on the cabinet body, and the locking mechanism matches the cabinet door.

[0020] Preferably, the locking mechanism includes a push-type switch sleeve fixedly mounted on the outer side of the cabinet, the push-type switch sleeve consists of an outer ring and an inner ring, the inner ring can slide within the outer ring, a push rod is fixedly mounted on the inner ring, a support frame is fixedly mounted on the outer side of the cabinet, a second rack matching the first rack is slidably mounted on the support frame, and a wedge block matching the second rack is fixedly mounted on the push rod.

[0021] The present invention also provides a method for using a delayed interlocking protection high-voltage power distribution cabinet based on a smart grid, comprising the above-mentioned delayed interlocking protection high-voltage power distribution cabinet based on a smart grid, and further comprising the following steps:

[0022] S1. When the cabinet door is closed, the power connection module can switch the power supply inside the cabinet;

[0023] S2. If you need to open the cabinet door, you first need to close the switch. Closing the switch will drive the door lock assembly to operate through the shaft, so that the cabinet door is free of restrictions. At this time, the power connection module is in the closed state, and then the cabinet door can be opened;

[0024] S3. After the cabinet door is opened, the locking component will be activated. The locking component drives the grounding component and the adapter component through the linkage component. The grounding component grounds the electrical components inside the cabinet. The adapter component changes the current direction of the power connection module so that there is no current in the electrical components inside the cabinet. At this time, the locking component can also lock the linkage component to lock the switch.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. When the power connection module and the cabinet door of the high-voltage distribution cabinet are interlocked, a door locking component is set between the switch and the cabinet door. When the switch is open, the cabinet door cannot be opened for maintenance or other operations. When the switch is closed, the cabinet door can be opened. When the cabinet door is open, the switch can be locked, and the switch can be unlocked by manually operating the push-type switch sleeve, so that the switch can be opened or closed to facilitate maintenance and repair of electrical components. After the maintenance and repair is completed, the cabinet door is closed. There is no need to repeatedly open and close the cabinet door for testing. This can greatly improve safety and avoid electric shock caused by misoperation.

[0027] 2. When the power connection module and the cabinet door of the high-voltage distribution cabinet are interlocked, the residual current on other electrical components inside the cabinet can be introduced into the earth through the grounding wire through the grounding component after the cabinet door is opened. The power connection module is connected to the high-resistance resistor by setting a transfer component, so that the current on the power connection module is extremely small. Even if there is residual current, it will not cause harm to the operator. The resistance of the high-resistance resistor gradually increases after the transfer, which can effectively protect the circuit and avoid overheating and damage to the circuit caused by sudden changes in circuit current.

[0028] 3. When the power connection module and the cabinet door of the high-voltage distribution cabinet are interlocked, the locking assembly is used to lock the switch with the locking wheel after the cabinet door is opened to prevent the switch from being opened by accidental touch. The switch can only be unlocked manually through the cabinet door or the push-type switch sleeve. In addition, the locking wheel is protected again by the locking mechanism to prevent the locking wheel from slipping, thereby further improving the stability of the protection.

[0029] To sum up, when the present invention performs interlocking protection between the cabinet door and the power connection module, the cabinet door is opened after the power is turned off, which is safer. At the same time, the switch is locked after the cabinet door is opened to prevent the power connection module from being started due to accidental touch. In addition, after the cabinet door is opened, the opening and closing of the power connection module can be controlled at will by the push-type switch sleeve, which is convenient for detecting the electrical components inside the cabinet. In addition, after the power is turned off, the residual current in the electrical components can be reduced by grounding and increasing the resistance in the circuit loop, which has the advantage of protecting the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a structural schematic diagram of a delayed interlocking protection high-voltage distribution cabinet based on a smart grid proposed by the present invention;

[0032] Figure 2 for Figure 1 Detailed diagram of the structure after the cabinet door is opened and rotated to a certain angle;

[0033] Figure 3 for Figure 2 The enlarged structural schematic detail diagram of the A part;

[0034] Figure 4 for Figure 2 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0035] Figure 5 for Figure 4 Detailed schematic diagram of the structure after removing the protective cover;

[0036] Figure 6 for Figure 5 Detailed diagram of the structure after removing the cabinet body and cabinet doors;

[0037] Figure 7 for Figure 6 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0038] Figure 8 for Figure 7 A schematic detailed diagram of the enlarged structure of part B;

[0039] Fig. 9 for Figure 7 An enlarged schematic diagram of the structure after removing the power connection module, the switch and the rotating shaft;

[0040] Fig.10 for Fig. 9 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0041] Fig.11 for Fig.10 A schematic detailed diagram of the structure after removing the first cover body and the second cover body;

[0042] Fig.12 for Fig. 9 Enlarged structural schematic details of the middle locking wheel, push-type switch sleeve, push rod and other components;

[0043] Fig.13 for Fig.12 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0044] Fig.14 for Fig.10 A schematic detailed plan view of the structure of the middle frame and other components on the frame along one of the angles;

[0045] Fig.15 for Fig.10 Detailed diagram of the exploded structure of the middle frame and other components on the frame.

[0046] In the figure: 1 cabinet, 2 cabinet door, 3 protection cover, 4 switch, 5 block, 6 power connection module, 7 first card block, 8 rotating shaft, 9 second card block, 10 grounding wire, 11 locking wheel, 12 first cover, 13 push switch sleeve, 14 frame, 15 rotating shaft, 16 high resistance resistor, 17 first connector, 18 first conductive block, 19 grounding block, 20 second conductive block, 21 push rod, 22 gear set, 23 box body, 24 support frame, 25 first rack, 26 second rack, 27 return spring, 28 first magnetic plate, 29 second magnetic plate, 30 first gear, 31 wedge block, 32 gear 1, 33 gear 2, 34 toothed disc, 35 gear cylinder, 36 worm wheel, 37 worm, 38 rotating rod. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1: Reference Figure 1-Figure 2 , Figure 4-Figure 8 A delayed interlocking protection high-voltage power distribution cabinet based on a smart grid includes a cabinet body 1, electrical components inside the cabinet body 1, and a cabinet door 2 rotatably mounted on the cabinet body 1, and also includes a power connection module 6 rotatably mounted with a switch 4, and the switch 4 controls the opening and closing of the power connection module 6, such as Figure 6 As shown, pushing the switch 4 upwards turns on the power connection module 6, and pulling it downward turns it off;

[0049] The power connection module 6 is fixedly installed inside the cabinet 1. A strip through hole is opened on the side of the cabinet 1. The pull switch 4 passes through and extends out of the strip through hole. A rotating shaft 8 is rotatably installed in the cabinet 1, and a one-way component is installed between the rotating shaft 8 and the pull switch 4. The purpose of arranging the pull switch 4 outside the cabinet 1 is to open and close the power connection module 6 outside the cabinet 1. This is not only used to close the power connection module 6, but also to open the power connection module 6 outside the cabinet 1 to avoid the operator staying inside the cabinet 1 to open the power connection module 6 and avoid electric shock.

[0050] A door opening locking assembly is installed between the rotating shaft 8 and the cabinet door 2; the door opening locking assembly includes a second clamping block 9 fixedly installed on the rotating shaft 8, and a first clamping block 7 matching the second clamping block 9 is fixedly installed on the cabinet door 2. The first clamping block 7 and the second clamping block 9 both adopt an L-shaped design. The door opening locking assembly is used to lock and control the cabinet door 2.

[0051] Under the action of the shutter 4, the rotating shaft 8 is driven to rotate, and the rotating shaft 8 drives the second card block 9 to rotate, so that the first card block 7 is no longer restricted by the second card block 9. At this time, the first card block 7 and the cabinet door 2 can be opened. If the shutter 4 is in the open state, the second card block 9 is always engaged with the first card block 7, and the cabinet door 2 cannot be opened.

[0052] The cabinet door 2 rotates with the cabinet body 1 through an axis, the axis is fixedly connected to the cabinet body 1, and the axis is rotationally connected to the cabinet door 2. A spring roll is fixedly installed between the cabinet door 2 and the axis. The function of the spring roll is to generate a certain impact force when the cabinet door 2 is opened. At the same time, in order to keep the cabinet door 2 always at a ninety-degree vertical relationship with the cabinet body 1 when it is opened, to prevent the cabinet door 2 from closing automatically (the cabinet door 2 may automatically reset in the case of wind or uneven ground), and to facilitate the operation of the operator, a door lock matching the cabinet body 1 is installed on the cabinet door 2.

[0053] A door lock is installed on the cabinet door 2 to lock the cabinet door 2 to prevent the cabinet door 2 from popping out immediately after the shutter 4 is closed. The cabinet door 2 will pop out only after the door lock is opened, so that the operator has time to react.

[0054] A frame 14 is fixedly installed on the outside of the cabinet 1, and a linkage component that cooperates with the rotating shaft 8 is installed on the frame 14. A protective cover 3 that cooperates with the frame 14 is fixedly installed on the outer side of the cabinet 1, which is used to protect the components on the frame 14, isolate the air, and extend the service life. The linkage component includes a plurality of rotating rods 38 rotatably installed on the frame 14.

[0055] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 6 , Figure 9-Figure 15 The linkage assembly includes a rotating shaft 15 that is rotatably mounted on the side of the cabinet 1, the rotating shaft 15 is connected to the rotating shaft 8 through a bevel gear set, a rotating rod 1 is rotatably mounted on the frame 14, a gear 1 32 is fixedly mounted on the rotating rod 1, and the rotating shaft 15 is connected to the rotating rod 1 through a gear set 22;

[0056] A rotating rod 2 is rotatably mounted on the frame 14, a gear 1 32 is fixedly mounted on the rotating rod 1, a gear 2 33 meshing with the gear 1 32 is fixedly mounted on the rotating rod 2, a toothed disc 34 is fixedly mounted on the rotating rod 2, and a gear cylinder 35 meshing with the toothed disc 34 is fixedly mounted on each rotating rod 38.

[0057] The rotating shaft 8 rotates under the drive of the pull gate 4, and will drive the rotating shaft 15 to rotate through the bevel gear set. The rotating shaft 15 drives the rotating rod 1 to rotate through the gear set 22. The rotating rod 1 drives the gear 1 32 to rotate, thereby driving the gear 2 33 meshing with the gear 1 32 to rotate. The rotation of the gear 2 33 drives the rotating rod 2 fixedly connected to it to rotate. The rotating rod 2 drives the gear plate 34 to rotate. The gear plate 34 will drive the rotating rod 38 to rotate through the gear cylinder 35 meshing with it.

[0058] The purpose of setting up many gears of different sizes here is to expand the rotational displacement stroke generated by the rotation of the shutter 4, to avoid the rotational displacement of the shutter 4 being too small, resulting in the subsequent operation being unable to meet the stroke requirements. At the same time, the stroke expansion resistance increases, providing resistance protection for the shutter 4, to avoid accidental touch causing the shutter 4 to open, and has a certain safety protection effect.

[0059] A grounding component that cooperates with other electrical components inside the cabinet 1 is installed on the frame 14; the grounding component includes a grounding block 19 fixedly installed on the outer side of the cabinet 1, the grounding block 19 is connected to the electrical components inside the cabinet 1, a connecting rod is slidably installed on the outer side of the cabinet 1, a second conductive block 20 that cooperates with the grounding block 19 is fixedly installed on the connecting rod, a grounding wire 10 is fixedly connected to the second conductive block 20, a tension spring is fixedly installed between the connecting rod and the cabinet 1, a first magnetic plate 28 is fixedly installed on the connecting rod, a second magnetic plate 29 that mutually repels the first magnetic plate 28 is fixedly installed on one of the rotating rods 38, and a second cover that cooperates with the second magnetic plate 29 is fixedly installed on the frame 14.

[0060] The rotating rod 38 corresponding to the second cover body rotates (for the sake of convenience of description, it is named the first rotating rod 38 here), and the rotation of the first rotating rod 38 will drive the second magnetic plate 29 to rotate, so that the second magnetic plate 29 rotates to be parallel to the first magnetic plate 28. Since the second magnetic plate 29 repels the first magnetic plate 28, the first magnetic plate 28 will move under the action of the second magnetic plate 29, and drive the second conductive block 20 to move to contact the grounding block 19 through the connecting rod. At this time, the residual current on the electrical components inside the cabinet 1 will be introduced into the earth through the grounding block 19, the second conductive block 20 and the grounding wire 10, and the residual current in the electrical components will be cleared to prevent the residual current from causing harm to the operator.

[0061] The repulsive force between the second magnetic plate 29 and the first magnetic plate 28 is greater than the tensile elastic force of the tension spring, ensuring that the second conductive block 20 is against the grounding block 19 under the action of the repulsive force. When the switch 4 is opened, the second magnetic plate 29 flips over, and the second conductive block 20 is separated from the grounding block 19 under the action of the tension spring, and loses grounding.

[0062] The purpose of using the first magnetic plate 28 and the second magnetic plate 29 is to avoid direct contact, thereby preventing electric shock caused by leakage and further improving safety.

[0063] The frame 14 is provided with a switching assembly that matches the power connection module 6;

[0064] The adapter assembly includes a first connector 17 fixedly installed on the outer side of the cabinet 1, the first connector 17 is connected to the power connection module 6 through an electric wire, a connecting rod is slidably installed on the outer side of the cabinet 1, a first conductive block 18 is fixedly installed on the connecting rod, a reset spring 27 is fixedly installed between the connecting rod and the cabinet 1, a high-resistance resistor 16 is fixedly installed on the frame 14, the first conductive block 18 is connected to the high-resistance resistor 16 through a wire, a third magnetic plate is fixedly installed on the connecting rod, a fourth magnetic plate matching the third magnetic plate is fixedly installed on another rotating rod 38, an adjustment knob is installed on the high-resistance resistor 16, and the corresponding rotating rod 38 is fixedly connected to the adjustment knob.

[0065] Its principle is similar to the above-mentioned grounding component. Through the cooperation between the third magnetic plate and the fourth magnetic plate, the power connection module 6 is connected to the high-resistance resistor 16 through the first connector 17 and the first conductive block 18, and the residual current on the power connection module 6 is introduced into the high-resistance resistor 16. At the moment when the power connection module 6 is powered off, the voltage still remains at a high state. At this time, connecting the high-resistance resistor 16 can quickly reduce the current on the power connection module 6, thereby playing a protective role.

[0066] The first connector 17 is connected to the power connection module 6 through wires, and a wire connector is installed on the first connector 17. The first conductive block 18 and the high-resistance resistor 16, and the high-resistance resistor 16 and the power connection module 6 are connected through wires to form a circuit loop.

[0067] The high-resistance resistor 16 will automatically change its resistance when the corresponding rotating rod 38 rotates (the high-resistance resistor 16 has an arc-shaped resistor inside and a conductive rod on the rotating rod 38. As the position of the conductive rod changes, the length of the arc-shaped resistor connected to the circuit changes, thereby changing the resistance), so that the current in the circuit loop gradually decreases, avoiding damage to the circuit caused by sudden current changes, thereby protecting the circuit.

[0068] A locking assembly is mounted on the frame 14 and is matched with the cabinet door 2 and is used to lock the shutter 4;

[0069] The locking assembly includes a box body 23 fixedly mounted on the frame body 14, a first rack 25 is slidably mounted inside the box body 23, a first gear 30 meshing with the first rack 25 is fixedly mounted on the rotating rod, a locking wheel 11 is fixedly mounted on the rotating rod, the locking wheel 11 is rotationally connected to the box body 23, the locking wheel 11 consists of a wheel body and a locking structure, the locking structure is mounted on the box body 23, the wheel body is locked by the locking structure, a locking mechanism matching with the first rack 25 is mounted on the cabinet body 1, and the locking mechanism matches with the cabinet door 2.

[0070] The one-way component includes a worm gear 36 fixedly mounted on the rotating shaft 8, and a pillar is fixedly mounted on the pull switch 4. The pull switch 4 drives the pillar to rotate around the central axis of the pillar. The pillar controls the opening and closing of the power connection module 6, and a worm 37 matching the worm gear 36 is fixedly mounted on the pillar.

[0071] Pushing up or pulling down the switch 4 will drive the support to rotate, and the rotation of the support will drive the worm 37 to rotate, and then drive the worm wheel 36 to rotate, thereby driving the rotating shaft 8 to rotate. Conversely, the worm wheel 36 cannot drive the worm 37 to rotate. This design prevents the locking wheel 11 from rotating incorrectly when the power connection module 6 is turned on, so as to increase the high resistance value resistor 16 and prevent the high resistance value resistor 16 from sharing power.

[0072] When the power connection module 6 is turned on, the cabinet door 2 cannot be locked (the locking described here is the delayed interlock between the power connection module 6) (a lock body is installed on the cabinet door 2, which is an existing structure, used to lock the cabinet door 2 alone, and this operation is a manual operation). At this time, the operator detects whether the cabinet door 2 has established a delayed interlock with the power connection module 6. He only needs to open the cabinet door 2 again. If the cabinet door 2 is opened, the delayed interlock is not established. If the cabinet door 2 cannot be opened, it means that the delayed interlock has been established, and it is necessary to close the pull switch 4 again to lock the cabinet door 2 (pull down the pull switch 4 and then close the cabinet door 2, and then use the lock body to lock the cabinet door, and finally push up the pull switch 4, and the cabinet door 2 can establish a delayed interlock with the power connection module 6).

[0073] The locking structure and the wheel body form a locking wheel 11, which can be understood as a universal wheel on an existing cart. Pressing the locking structure can automatically lock the universal wheel. Since it is consistent with the working principle of the existing structure, it is not described in detail here.

[0074] As the rotating rod 1 rotates, the locking wheel 11 will be driven to rotate. After the cabinet door 2 is opened, the wheel body is locked by the locking structure. At this time, the rotating rod 1 cannot rotate, and the switch 4 cannot drive the power connection module 6 to start. Manual control is required, so that the operator can consciously turn on the power connection module 6, which is highly safe and avoids electric shock due to accidental operation.

[0075] The locking mechanism includes a push-type switch sleeve 13 fixedly mounted on the outer side of the cabinet 1. The push-type switch sleeve 13 consists of an outer ring and an inner ring. The inner ring can slide within the outer ring. A push rod 21 is fixedly mounted on the inner ring. A support frame 24 is fixedly mounted on the outer side of the cabinet 1. A second rack 26 matching the first rack 25 is slidably mounted on the support frame 24. A wedge block 31 matching the second rack 26 is fixedly mounted on the push rod 21.

[0076] The push-type switch cover 13 is an existing structure. The inner ring is moved and fixed by pressing once, and is reset by pressing again. Since it is a common structure (refer to the ballpoint pen push structure), it will not be described in detail here.

[0077] Because the cabinet door 2 generates a certain impact force under the action of the spring coil, the abutment block 5 on the cabinet door 2 abuts against the inner ring of the push switch sleeve 13, causing the inner ring to move, and the inner ring drives the push rod 21 to move, thereby driving the wedge block 31 to move, so that the wedge block 31 abuts against the second rack 26. Since one side of the wedge block 31 is designed to be inclined, the second rack 26 moves upward with the movement of the wedge block 31 (refer to the up and down here). Fig.13 , the first rack 25 is located at the top, and the second rack 26 is located at the bottom), so that the second rack 26 is stuck in the first rack 25, and the first rack 25 is locked. Since the inner ring will be locked after the first press, the second rack 26 will remain in a state of engagement with the first rack 25. At this time, if the switch 4 is pushed by mistake, since the first rack 25 is locked by the second rack 26, it cannot be reset, and the switch 4 cannot be rotated in the reverse direction, that is, the power connection module 6 cannot be turned on;

[0078] If it is necessary to push the switch 4 in reverse to open the power connection module 6, it is necessary to press the inner ring of the push-type switch sleeve 13 again to reset the inner ring. At this time, the second rack 26 will reset and lose the lock on the first rack 25, and then unlock the locking wheel 11. At this time, the switch 4 loses the lock of the locking wheel 11 and the second rack 26 before it can be pushed in reverse to start the power connection module 6. This operation is used to test electrical components when opening the cabinet door 2. Otherwise, the cabinet door 2 needs to be closed before opening the power connection module 6.

[0079] The specific operation steps of this device are as follows:

[0080] S1, when the cabinet door 2 is closed, the power connection module 6 can switch the power inside the cabinet 1 by pulling the switch 4;

[0081] S2. If the cabinet door 2 needs to be opened, the shutter 4 needs to be closed first. Closing the shutter 4 will drive the pillar to rotate. The rotation of the pillar will drive the worm 37 to rotate, and then drive the worm wheel 36 to rotate, thereby driving the shaft 8 to rotate. The shaft 8 drives the second card block 9 to rotate, so that the first card block 7 loses the restriction of the second card block 9. At this time, the first card block 7 and the cabinet door 2 can be opened. If the shutter 4 is in the open state, the second card block 9 is always engaged with the first card block 7, and the cabinet door 2 cannot be opened;

[0082] S3, after the cabinet door 2 is opened, the locking component will be started, and the locking component will drive the grounding component and the adapter component through the linkage component. The grounding component will ground the electrical components inside the cabinet 1, and the adapter component will change the current direction of the power connection module 6 so that there is no current in the electrical components inside the cabinet 1. At this time, the locking component can also lock the linkage component to lock the switch 4.

[0083] Specifically, as the rotating rod 1 rotates, the locking wheel 11 will be driven to rotate. After the cabinet door 2 is opened, the wheel body is locked by the locking structure. At this time, the rotating rod 1 cannot rotate, and the switch 4 cannot drive the power connection module 6 to start, requiring manual control;

[0084] The rotating shaft 8 rotates under the drive of the pull gate 4, and drives the rotating shaft 15 to rotate through the bevel gear set. The rotating shaft 15 drives the rotating rod 1 to rotate through the gear set 22. The rotating rod 1 drives the gear 1 32 to rotate, thereby driving the gear 2 33 meshing with the gear 1 32 to rotate. The rotation of the gear 2 33 drives the rotating rod 2 fixedly connected thereto to rotate. The rotating rod 2 drives the toothed disc 34 to rotate. The toothed disc 34 drives the rotating rod 38 to rotate through the gear cylinder 35 meshing therewith.

[0085] The rotation of the first rotating rod 38 will drive the second magnetic plate 29 to rotate, so that the second magnetic plate 29 rotates to be parallel to the first magnetic plate 28. Since the second magnetic plate 29 repels the first magnetic plate 28, the first magnetic plate 28 moves under the action of the second magnetic plate 29, and drives the second conductive block 20 to move to contact the grounding block 19 through the connecting rod. At this time, the residual current on the electrical components inside the cabinet 1 will be introduced into the ground through the grounding block 19, the second conductive block 20 and the grounding wire 10, so as to clear the residual current in the electrical components and avoid the residual current from causing harm to the operator;

[0086] The repulsive force between the second magnetic plate 29 and the first magnetic plate 28 is greater than the tensile elastic force of the tension spring, ensuring that the second conductive block 20 is against the grounding block 19 under the action of the repulsive force. When the switch 4 is opened, the second magnetic plate 29 flips over, and the second conductive block 20 is separated from the grounding block 19 under the action of the tension spring, and loses grounding.

[0087] Through the cooperation between the third magnetic plate and the fourth magnetic plate, the power connection module 6 is connected to the high-resistance resistor 16 through the first connector 17 and the first conductive block 18, and the residual current on the power connection module 6 is introduced into the high-resistance resistor 16. At the moment when the power connection module 6 is powered off, the voltage still remains at a high state. At this time, connecting the high-resistance resistor 16 can quickly reduce the current on the power connection module 6, thereby playing a protective role.

[0088] The locking component drives the grounding component and the adapter component through the linkage component. The grounding component grounds the electrical components inside the cabinet 1. The adapter component changes the current direction of the power connection module 6 so that there is no current in the electrical components inside the cabinet 1. At this time, the locking component can also lock the linkage component to lock the switch 4. Therefore, when the cabinet door 2 is opened, the power connection module 6 cannot be started. The power connection module 6 can only be operated when the operator is clear about the operating process.

[0089] S4. When the cabinet door 2 is open and the switch 4 is locked, the switch 4 can be unlocked by manually operating the push-type switch sleeve 13, so that the opening and closing of the power connection module 6 can be controlled when the cabinet door 2 is not closed, which is convenient for detecting the electrical components inside the cabinet.

[0090] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A delayed interlocking protection high-voltage power distribution cabinet based on a smart grid, comprising a cabinet body (1), electrical components inside the cabinet body (1), and a cabinet door (2) rotatably mounted on the cabinet body (1), characterized in that: It also includes a power connection module (6) on which the switch (4) is rotatably mounted; The power connection module (6) is fixedly installed inside the cabinet (1); a strip-shaped through hole is opened on the side of the cabinet (1); the pull switch (4) passes through and extends out of the strip-shaped through hole; a rotating shaft (8) is rotatably installed inside the cabinet (1); a one-way component is installed between the rotating shaft (8) and the pull switch (4); A door opening locking assembly is installed between the rotating shaft (8) and the cabinet door (2), and the door opening locking assembly is used to lock and control the cabinet door (2). A frame (14) is fixedly installed on the outside of the cabinet (1), and a linkage assembly that cooperates with the rotating shaft (8) is installed on the frame (14). The linkage assembly includes a plurality of rotating rods (38) rotatably installed on the frame (14). A grounding assembly that cooperates with other electrical components inside the cabinet (1) is installed on the frame (14). A switching assembly that cooperates with the power connection module (6) is installed on the frame (14), and a locking assembly that cooperates with the cabinet door (2) and is used to lock the pull switch (4) is installed on the frame (14).

2. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The one-way component includes a worm gear (36) fixedly mounted on a rotating shaft (8), a pillar fixedly mounted on the pull switch (4), the pull switch (4) drives the pillar to rotate around the central axis of the pillar, the pillar controls the opening and closing of the power connection module (6), and a worm (37) matched with the worm gear (36) is fixedly mounted on the pillar.

3. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The door opening and locking assembly comprises a second clamping block (9) fixedly mounted on a rotating shaft (8); a first clamping block (7) matched with the second clamping block (9) is fixedly mounted on the cabinet door (2); and the first clamping block (7) and the second clamping block (9) are both L-shaped in design.

4. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The cabinet door (2) and the cabinet body (1) are rotated via a shaft, the shaft and the cabinet body (1) are fixedly connected, the shaft and the cabinet door (2) are rotationally connected, a spring roll is fixedly installed between the cabinet door (2) and the shaft, and a door lock matching the cabinet body (1) is installed on the cabinet door (2).

5. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The linkage assembly comprises a rotating shaft (15) which penetrates and is rotatably mounted on the side of the cabinet (1); the rotating shaft (15) is connected to the rotating shaft (8) via a bevel gear set; a rotating rod (1) is rotatably mounted on the frame (14); a gear (32) is fixedly mounted on the rotating rod (1); and the rotating shaft (15) is connected to the rotating rod (1) via a gear set (22); A rotating rod 2 is rotatably mounted on the frame (14), a gear 1 (32) is fixedly mounted on the rotating rod 1, a gear 2 (33) meshing with the gear 1 (32) is fixedly mounted on the rotating rod 2, a toothed disc (34) is fixedly mounted on the rotating rod 2, and a toothed cylinder (35) meshing with the toothed disc (34) is fixedly mounted on each of the rotating rods (38).

6. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The grounding assembly comprises a grounding block (19) fixedly mounted on the outer side of the cabinet (1), the grounding block (19) being connected to the electrical components inside the cabinet (1), a connecting rod being slidably mounted on the outer side of the cabinet (1), a second conductive block (20) matching with the grounding block (19) being fixedly mounted on the connecting rod, a grounding wire (10) being fixedly connected to the second conductive block (20), a tension spring being fixedly mounted between the connecting rod and the cabinet (1), a first magnetic plate (28) being fixedly mounted on the connecting rod, a second magnetic plate (29) mutually exclusive with the first magnetic plate (28) being fixedly mounted on one of the rotating rods (38), and a second cover body matching with the second magnetic plate (29) being fixedly mounted on the frame (14).

7. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 1 is characterized in that: The adapter assembly comprises a first connector (17) fixedly mounted on the outer side of the cabinet (1), the first connector (17) being connected to the power connection module (6) via an electric wire, a connecting rod being slidably mounted on the outer side of the cabinet (1), a first conductive block (18) being fixedly mounted on the connecting rod, a return spring (27) being fixedly mounted between the connecting rod and the cabinet (1), a high-resistance resistor (16) being fixedly mounted on the frame (14), the first conductive block (18) being connected to the high-resistance resistor (16) via a wire, a third magnetic plate being fixedly mounted on the connecting rod, a fourth magnetic plate matching the third magnetic plate being fixedly mounted on another rotating rod (38), an adjusting knob being mounted on the high-resistance resistor (16), and a corresponding rotating rod (38) being fixedly connected to the adjusting knob.

8. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 5 is characterized in that: The locking assembly comprises a box body (23) fixedly mounted on a frame body (14); a first rack (25) is slidably mounted inside the box body (23); a first gear (30) meshing with the first rack (25) is fixedly mounted on the rotating rod; a locking wheel (11) is fixedly mounted on the rotating rod; the locking wheel (11) is rotatably connected to the box body (23); the locking wheel (11) consists of a wheel body and a locking structure; the locking structure is mounted on the box body (23); the wheel body is locked by the locking structure; a locking mechanism matched with the first rack (25) is mounted on the cabinet body (1); the locking mechanism matches with the cabinet door (2).

9. The delayed interlocking protection high-voltage distribution cabinet based on smart grid according to claim 8 is characterized in that: The locking mechanism comprises a push-type switch sleeve (13) fixedly mounted on the outer side of the cabinet (1), the push-type switch sleeve (13) comprising an outer ring and an inner ring, the inner ring being slidable within the outer ring, a push rod (21) being fixedly mounted on the inner ring, a support frame (24) being fixedly mounted on the outer side of the cabinet (1), a second rack (26) matching with the first rack (25) being slidably mounted on the support frame (24), and a wedge block (31) matching with the second rack (26) being fixedly mounted on the push rod (21).

10. A method for using a delayed interlocking protection high-voltage power distribution cabinet based on a smart grid, used for the delayed interlocking protection high-voltage power distribution cabinet based on a smart grid as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, when the cabinet door (2) is closed, the power connection module (6) can perform power switching inside the cabinet (1); S2. If the cabinet door (2) needs to be opened, the switch (4) needs to be closed first. Closing the switch (4) will drive the locking component to operate through the rotating shaft (8), so that the cabinet door (2) is no longer restricted. At this time, the power connection module (6) is in a closed state, and then the cabinet door (2) can be opened; S3, after the cabinet door (2) is opened, the locking component is activated, and the locking component drives the grounding component and the adapter component through the linkage component. The grounding component grounds the electrical components inside the cabinet (1), and the adapter component changes the current direction of the power connection module (6) so that there is no current in the electrical components inside the cabinet (1). At this time, the locking component can also lock the linkage component to lock the switch (4).

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