PT cabinet with integrated node
By setting up a five-proof interlocking structure and an electromagnetic lock structure on the cable chamber door of the PT cabinet, combined with the upper hook and lower hook design and mechanical locking, the problems of inconvenient operation, insufficient protection level and lack of mechanical locking in the existing technology are solved, and higher operating convenience and safety are achieved.
Patent Information
- Application Number
- CN202421783938.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing integrated node switch cabinet cable chamber structure is limited by space, inconvenient operation, insufficient protection level, and no five-proof interlocking, and no reliable mechanical locking, which poses a risk of live operation.
Design a PT cabinet with integrated nodes, equipped with a handle to facilitate the pick-up of the cable room door, fix the electromagnetic lock in the cable room, adopt the upper hook and lower hook design, add a mechanical locking structure, realize automatic locking and prevent misoperation.
It improves the operation convenience and protection level of the cable chamber door, ensures the reliability of mechanical locking, reduces the risk of live operation, and improves overall safety.
Smart Images
Figure CN222868335U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a field, in particular to a PT cabinet with an integrated node. Background Art
[0002] The main function of the integrated node switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, mutual inductors and various protection devices.
[0003] The cable room structure of the integrated node switch cabinet in the prior art is limited by space, and the quick connector in the cable room is inconvenient to operate. The electromagnetic lock of the cable room is usually placed on the cable room door. When removing the cable room door, the electromagnetic lock connection line needs to be unplugged. The protection level is insufficient. The cable room of the integrated node switch cabinet in the prior art is not equipped with five-protection interlocking, and there is no reliable mechanical locking, which poses the risk of live operation.
[0004] Therefore, it is necessary to develop a new type of PT cabinet with integrated nodes to overcome the above problems. Utility Model Content
[0005] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a PT cabinet with an integrated node, which is equipped with a handle for convenient access to the cable room door, and the electromagnetic lock is fixed in the cable room. The upper hook and the lower hook are designed in different shapes to facilitate the use of on-site quick connectors and improve the protection level; a mechanical lock is added to prevent accidental entry into the live interval, and when an erroneous operation occurs, automatic locking is achieved to prevent the erroneous operation from occurring and improve safety.
[0006] Technical solution: The utility model is a PT cabinet with an integrated node, characterized in that a five-defense interlocking structure and an electromagnetic lock structure are arranged on the cable room door of the cable room of the PT cabinet with an integrated node; an interlocking bracket and an electromagnetic lock bracket corresponding to the five-defense interlocking structure and the electromagnetic lock structure are respectively arranged on the inner side of the cable room door.
[0007] Among them, the electromagnetic lock structure includes an electromagnetic lock, an upper hook and a lower hook are respectively provided on both sides of the cable room door, and the two sides of the cable room door are respectively connected to the left plate and the right plate of the cable room through the lower hooks, a protective plate is provided between the top of the cable room door and the upper beam, a lower beam is provided under the cable room door, a handle is provided on the surface of the cable room door, an electromagnetic lock bracket is provided on the inner side of the cable room door, and an electromagnetic lock corresponding to the electromagnetic lock bracket is provided in the cable room.
[0008] Wherein, a decorative sealing plate is arranged on the outside of the cable room door, and a plurality of protective wire loops are arranged on the cable room door.
[0009] Among them, a pad is provided at the connection between the cable room door and the upper hook, and a pad is provided at the connection between the cable room door and the lower hook.
[0010] Wherein, the electromagnetic lock is installed in the cable room through the electromagnetic lock installation plate, and the lock tongue of the electromagnetic lock corresponds to the hole body of the electromagnetic lock bracket.
[0011] Wherein, the left side plate and the right side plate are provided with holes corresponding to the upper hook and the lower hook.
[0012] Among them, the five-protection interlocking structure is arranged at the upper cross beam between the cable room door and the mechanism panel, the cable room door is provided with an interlocking bracket, the side of the mechanism panel is provided with a baffle and a baffle additional plate, and the bottom of the upper cross beam is provided with an interlocking mounting plate, an interlocking limit plate and an interlocking plate connected together by an interlocking shaft, and a tension spring is provided between the interlocking mounting plate and the interlocking plate.
[0013] Wherein, the cable room door is a lifting structure, the interlocking bracket is fixed on the cable room door, and the baffle additional piece is fixed on the baffle.
[0014] Wherein, the interlocking mounting plate is fixed on the upper crossbeam, and the baffle is arranged at the opening of the upper crossbeam.
[0015] Wherein, a load switch mechanism is arranged behind the mechanism panel.
[0016] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model is equipped with a handle to facilitate the cable room door to be taken, the electromagnetic lock is fixed in the cable room, the upper hook and the lower hook are designed in different shapes, which is convenient for the use of the on-site quick connector and improves the protection level. The utility model has a novel and practical structure; the parts are simple to process and easy to realize; it is easy to install and has a reliable structure.
[0017] The utility model can only operate the earthing switch to open and the load switch to close after the cable room door is closed; if the cable room door is not closed, the earthing switch cannot be operated and the switch cannot be closed. The load switch is opened and the cable room door can be opened after closing the earthing switch; if the earthing switch is not closed, the cable room is energized and the cable room door cannot be opened.
[0018] The utility model adds mechanical locking to prevent mistaken entry into the live interval, and realizes automatic locking when misoperation occurs, preventing misoperation from proceeding and improving safety. The utility model has a novel and practical structure; the parts are simple to process and easy to realize; the locking is intuitive and not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the utility model without the decorative cover plate installed;
[0020] Figure 2 It is a structural schematic diagram of the decorative cover plate of the utility model;
[0021] Figure 3 It is a structural schematic diagram of the upper crossbeam and the protective plate of the utility model;
[0022] Figure 4 It is a structural schematic diagram of the utility model;
[0023] Figure 5 It is a partial structural schematic diagram of the utility model;
[0024] Figure 6 It is a structural schematic diagram of the cable room door and handle of the utility model;
[0025] Figure 7 It is a side view structural diagram of the cable room door and handle of the utility model;
[0026] Figure 8 It is a structural schematic diagram of the handle of the utility model;
[0027] Fig. 9 The structure diagram of the handle of the utility model is shown in FIG. Figure 1 ;
[0028] Fig.10 The structure diagram of the handle of the utility model is shown in FIG. Figure 2 ;
[0029] Fig.11 It is a structural schematic diagram of the electromagnetic lock of the utility model in the locked state;
[0030] Fig.12 It is a structural schematic diagram of the electromagnetic lock of the utility model in unlocking state;
[0031] Fig.13 It is a structural schematic diagram of the upper hook of the utility model in the inserted state;
[0032] Fig.14 It is a structural schematic diagram of the upper hook of the utility model in a pulled-out state;
[0033] Fig.15 It is a structural schematic diagram of the lower hook of the utility model;
[0034] Fig.16 It is a structural schematic diagram of the cable room door of the utility model in an open state;
[0035] Fig.17 It is a structural schematic diagram of the cable room door of the utility model in a closed state;
[0036] Fig.18 It is a structural schematic diagram of the lower hook and the right side plate of the utility model;
[0037] Fig.19This is a schematic diagram of the structure of the interlocking bracket of the utility model being fixed on the cable room door;
[0038] Fig. 20 This is a schematic diagram of the structure in which the baffle additional sheet of the utility model is fixed on the baffle;
[0039] Fig.21 It is a schematic diagram of the connection structure of the interlocking mounting plate, the interlocking limiting plate and the interlocking plate of the utility model;
[0040] Fig. 22 It is a schematic diagram of the connection structure of the interlocking limit plate and the interlocking piece of the utility model;
[0041] Fig.23 It is a structural schematic diagram of the interlocking piece of the utility model in a tensioned state of the tension spring without the action of external force;
[0042] Fig.24 It is a structural schematic diagram of the utility model in which the interlocking plate rotates clockwise under the action of a downward external force;
[0043] Fig.25 The interlocking mounting plate of the utility model is fixed on the beam, and the baffle is inserted in the opening of the beam. Figure 1 ;
[0044] Fig.26 The interlocking mounting plate of the utility model is fixed on the beam, and the baffle is inserted in the opening of the beam. Figure 2 ;
[0045] Fig. 27 This is a structural schematic diagram of the utility model in which the cable room door is closed and the interlocking bracket clamps the interlocking plate;
[0046] Fig.28 It is a structural schematic diagram of the baffle of the utility model moving downward under the action of its own weight;
[0047] Fig.29 It is a structural schematic diagram of the grounding switch of the utility model in which the operating hole is blocked and cannot be operated;
[0048] Fig.30 This is a schematic diagram of the structure of the grounding switch of the utility model, in which the operating hole of the grounding switch is unobstructed and the grounding switch can be operated;
[0049] Fig.31 This is a structural schematic diagram of the cable room door of the utility model in a state where it cannot be opened;
[0050] In the figure, 1 is the cable room door; 2 is the handle; 3 is the upper hook; 4 is the lower hook; 5 is the pad; 6 is the upper beam; 7 is the protective plate; 8 is the electromagnetic lock; 9 is the electromagnetic lock mounting plate; 10 is the electromagnetic lock bracket; 11 is the protective coil; 12 is the decorative cover plate; 13 is the lower beam; 14 is the left side plate; 15 is the right side plate; 16 is the interlocking bracket, 17 is the baffle, 18 is the baffle additional plate, 19 is the interlocking mounting plate, 20 is the interlocking limit plate, 21 is the interlocking plate, 22 is the interlocking shaft, 23 is the tension spring, 24 is the load switch mechanism, and 25 is the mechanism panel. DETAILED DESCRIPTION
[0051] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0052] The utility model provides a PT cabinet with an integrated node, a five-defense interlocking structure and an electromagnetic lock structure on a cable room door 1 of the cable room of the PT cabinet with an integrated node; an interlocking bracket 16 and an electromagnetic lock bracket 10 corresponding to the five-defense interlocking structure and the electromagnetic lock structure are respectively provided on the inner side of the cable room door 1.
[0053] The first part, the electromagnetic lock structure includes an electromagnetic lock 8, an upper hook 3 and a lower hook 4 are respectively provided on both sides of the cable room door 1, and the two sides of the cable room door 1 are respectively connected to the left side plate 14 and the right side plate 15 of the cable room through the lower hook 4, a protective plate 7 is provided between the top of the cable room door 1 and the upper crossbeam 6, a lower crossbeam 13 is provided under the cable room door 1, a handle 2 is provided on the surface of the cable room door 1, an electromagnetic lock bracket 10 is provided on the inner side of the cable room door 1, and an electromagnetic lock 8 corresponding to the electromagnetic lock bracket 10 is provided in the cable room.
[0054] Among them, a decorative cover plate 12 is provided on the outside of the cable room door 1. A plurality of protective coils 11 are provided on the cable room door 1. A pad 5 is provided at the connection between the cable room door 1 and the upper hook 3. A pad 5 is provided at the connection between the cable room door 1 and the lower hook 4. The electromagnetic lock 8 is installed in the cable room through the electromagnetic lock mounting plate 9. The lock tongue of the electromagnetic lock 8 corresponds to the hole of the electromagnetic lock bracket 10. The left side plate 14 and the right side plate 15 are provided with holes corresponding to the upper hook 3 and the lower hook 4. The cable room door 1 is installed on the cable room of the integrated node switch cabinet ( Figure 1 , 2 ).
[0055] The utility model improves the protection level and meets the IP4X protection level requirements of the existing ring network cabinet. A protective plate is added under the upper beam, and there is no 1mm gap after the cable room door is closed. Figure 3 ); Add a pad between the upper hook, lower hook and cable room door ( Figure 4 , 5 ) to prevent the cable room door from swinging left and right in the assembly gap to expose the upper hook and lower hook installation slots, so that all locations can meet the protection level ( Figure 5 ).
[0056] In the case of limited space, the cable room door is equipped with a handle, and a movable and convenient handle is used. After the handle is inserted into the notch of the cable room door, the rivet is riveted in the handle hole so that the handle cannot fall off. The handle is hung on the cable room door when it is free; when the cable room door is opened, the handle is flipped up to a horizontal state, which is enough to open the cable room door with the hand; after the decorative cover is installed, the handle is flipped down to fit the cable room door ( Figure 6-10 ).
[0057] The electromagnetic lock structure fixed in the cabinet is used. After the cable room door is opened, there is no need to plug in or unplug the electromagnetic lock connection wire. Use the electromagnetic lock mounting plate to fix the electromagnetic lock in the cabinet, and install the electromagnetic lock bracket on the cable room door. When the cabinet is powered, the locking rod of the electromagnetic lock extends out of the electromagnetic lock bracket hole, and the cable room door cannot be lifted up to open. When the cabinet is not powered, the locking rod of the electromagnetic lock retracts, and the cable room door can be lifted up to open ( Fig.11 , 12 ).
[0058] The cable room door uses a φ110 flat-plate protective ring. It is convenient for the installation of connectors, and can ensure that hands cannot touch the live cable room after the cable room door is closed, and does not affect the installation of decorative cover plates. The upper hook and the lower hook are used together, so that the cable room door can be pulled out and removed, and the installation is smooth, which is convenient for the installation of quick connectors.
[0059] After the cable room door is closed, the lower hook is far from the upper end. If the cable room door is pulled up by force, the cable room door may deviate to one side, causing the lower door interlock to be unlocked and the cable room door to be opened. Adding an upper hook can limit the left and right shaking of the cable room door, effectively ensuring the reliability of the cable door interlock ( Fig.13 , 14 ).
[0060] The lower hook is lengthened and rivets are added to allow the cable door to be pulled out, making it easier to install the quick connector ( Fig.15 ).
[0061] The cable room door is pulled to the end of the lower hook and the rivet is blocked at the left and right panels. The cable room door is hung ( Fig.16 ). Connect the quick connector from the protective coil to the cable room, and reach into the cable room from above the cable room door to install the quick connector. Push the cable room door forward, insert the upper hook into the slots on the left and right panels, and push it until the cable door fits with the left and right panels. Press the cable room door to trigger the interlock, and close the cable room door. ( Fig.17 ).
[0062] When more space is needed for maintenance and inspection, the cable room door can be removed. Lift the hanging cable room door upwards, and the rivet at the end of the lower hook can be released from the notched notch on the left and right panels to remove the cable room door ( Fig.18 ).
[0063] A decorative cover is installed outside the cable compartment to keep the appearance beautiful and unified with other matching cabinet types. When the quick connector is not in use, install the decorative cover and remove it before operation.
[0064] In the second part, the five-defense interlocking structure is arranged at the upper cross beam 6 between the cable room door 1 and the mechanism panel 25. The cable room door 1 is provided with an interlocking bracket 16, and the side of the mechanism panel 25 is provided with a baffle 17 and a baffle additional plate 18. The bottom of the upper cross beam 6 is provided with an interlocking mounting plate 19, an interlocking limit plate 20 and an interlocking plate 21 connected together by an interlocking shaft 22, and a tension spring 23 is arranged between the interlocking mounting plate 19 and the interlocking plate 21.
[0065] The cable room door 1 is a lifting structure, and the interlock bracket 16 is fixed on the cable room door 1. The baffle additional sheet 18 is fixed on the baffle 17. The interlock mounting plate 19 is fixed on the upper crossbeam 6. The baffle 17 is arranged at the opening of the upper crossbeam 6. A load switch mechanism 24 is arranged behind the mechanism panel 25. The cable room door 1 is arranged on the cable room of the integrated node switch cabinet.
[0066] like Fig.19 The interlocking bracket 16 is fixed on the lifting cable room door 1. Fig. 20 , the baffle additional sheet 18 is fixed on the baffle 17. Fig.21 , 22 , 23, 24, the interlocking shaft 22 connects the interlocking mounting plate 19, the interlocking plate 21, and the interlocking limit plate 20 together, and the tension spring 23 is placed on the interlocking mounting plate 19 and the interlocking plate 21. When there is no external force, the interlocking plate 21 is in a state of tension by the tension spring 23, and the interlocking plate 21 rotates clockwise under the action of a downward external force. Fig.25 , 26 , the interlocking mounting plate 19 is fixed on the upper crossbeam 6, and the baffle 17 is inserted into the opening of the upper crossbeam 6. Fig.23 , 27 , the interlocking plate 21 is free from external force, and the baffle 17 blocks the grounding switch operation hole on the mechanism panel 25. Close the cable room door 1, and the interlocking bracket 16 clamps the interlocking plate 21. Fig.28 , the cable room door 1 moves down and closes, the interlock bracket 16 drives the interlock plate 21 to rotate, and the baffle 17 moves down under the action of its own weight. Fig.29 , the cable room door 1 is not closed, the interlocking plate 21 is in the tensioned state of the tension spring 23, the baffle 17 is in the high position, and the grounding switch operating hole is blocked and cannot be operated. Fig.30 , the cable room door 1 is closed, the interlocking plate 21 rotates, the baffle 17 moves down under its own weight, the grounding switch operation hole is not blocked, and the grounding switch can be operated. When the grounding switch is closed, the baffle 17 is at a low position under the action of its own weight and can be manually lifted to open the cable room door 1. Fig.31, the grounding switch is open, the baffle 17 is at a low position under the action of its own weight, the mechanism connecting rod extends to prevent the baffle 17 from lifting up, and the cable room door cannot be opened.
[0067] When using:
[0068] When power is supplied: the grounding switch can be opened and the load switch can be closed only after the cable room door is closed; if the cable room door is not closed, the grounding switch cannot be opened and the switch cannot be closed.
[0069] Close the cable room door (lifting type), at this time, the interlock bracket notch blocks the interlock plate, and the interlock bracket drives the interlock plate to rotate during the falling process of the cable room door, and stops when it rotates to the bending position of the interlock limit plate, and the cable room door is closed. The baffle additional plate and the baffle move downward under the action of gravity, and the grounding switch can be opened and the load switch can be closed.
[0070] When the cable chamber is not closed, the interlocking plate does not move, the baffle does not move down, and the grounding switch operating hole is blocked, so the grounding switch cannot be opened and the load switch cannot be closed.
[0071] During power outage for maintenance: disconnect the load switch and close the grounding switch before opening the cable room door. If the grounding switch is not closed, the cable room is energized and the cable room door cannot be opened.
[0072] Turn on the grounding switch. At this time, the cable room is not energized and the cable room door can be opened for maintenance. Manually lift the baffle and the cable room door at the same time. The baffle moves up and the cable room door moves up. The interlocking piece rotates and resets, and the cable room door can be opened for maintenance.
[0073] When the grounding switch is not closed, the mechanism is in the grounding open state, and the mechanism connecting rod extends to prevent the baffle from lifting. The interlocking plate cannot rotate before the baffle is lifted, and the cable room door cannot be opened, preventing incorrect operation.
Claims
1. A PT cabinet with an integrated node, characterized in that: A five-defense interlocking structure and an electromagnetic lock structure are arranged on a cable room door (1) of a cable room of a PT cabinet with an integrated node; an interlocking bracket (16) and an electromagnetic lock bracket (10) corresponding to the five-defense interlocking structure and the electromagnetic lock structure are arranged on the inner side of the cable room door (1).
2. The PT cabinet with integrated node according to claim 1, characterized in that: The electromagnetic lock structure comprises an electromagnetic lock (8), an upper hook (3) and a lower hook (4) are respectively provided on both sides of a cable room door (1), the two sides of the cable room door (1) are respectively connected to a left side plate (14) and a right side plate (15) of the cable room through the lower hook (4), a protective plate (7) is provided between the upper part of the cable room door (1) and an upper crossbeam (6), a lower crossbeam (13) is provided below the cable room door (1), a handle (2) is provided on the surface of the cable room door (1), an electromagnetic lock bracket (10) is provided on the inner side of the cable room door (1), and an electromagnetic lock (8) corresponding to the electromagnetic lock bracket (10) is provided in the cable room.
3. The PT cabinet with integrated node according to claim 2, characterized in that: The cable room door (1) is provided with a decorative sealing plate (12) on the outside, and a plurality of protective coils (11) are provided on the cable room door (1).
4. The PT cabinet with integrated node according to claim 2, characterized in that: A pad (5) is provided at the connection between the cable room door (1) and the upper hook (3), and a pad (5) is provided at the connection between the cable room door (1) and the lower hook (4).
5. The PT cabinet with integrated node according to claim 2, characterized in that: The electromagnetic lock (8) is installed in the cable room via an electromagnetic lock installation plate (9), and the lock tongue of the electromagnetic lock (8) corresponds to the hole of the electromagnetic lock bracket (10).
6. The PT cabinet with integrated node according to claim 2, characterized in that: The left side plate (14) and the right side plate (15) are provided with holes corresponding to the upper hook (3) and the lower hook (4).
7. The PT cabinet with integrated node according to claim 1, characterized in that: The five-defense interlocking structure is arranged at the upper crossbeam (6) between the cable room door (1) and the mechanism panel (25); the cable room door (1) is provided with an interlocking bracket (16); a baffle (17) and a baffle additional plate (18) are arranged on the side of the mechanism panel (25); an interlocking mounting plate (19), an interlocking limit plate (20) and an interlocking plate (21) connected together by an interlocking shaft (22) are arranged at the bottom of the upper crossbeam (6); and a tension spring (23) is arranged between the interlocking mounting plate (19) and the interlocking plate (21).
8. The PT cabinet with integrated node according to claim 7, characterized in that: The cable room door (1) is a lifting structure, the interlocking bracket (16) is fixed on the cable room door (1), and the baffle additional piece (18) is fixed on the baffle (17).
9. The PT cabinet with integrated node according to claim 7, characterized in that: The interlocking mounting plate (19) is fixed on the upper crossbeam (6), and the baffle plate (17) is arranged at the opening of the upper crossbeam (6).
10. The PT cabinet with integrated node according to claim 7, characterized in that: A load switch mechanism (24) is arranged behind the mechanism panel (25).