RU105082U1 - OUTLET ELEMENT OF COMPLETE DISTRIBUTION DEVICE - Google Patents

Abstract

 1. Roll-out element of a complete switchgear, including a trolley with a vertical frame mounted on it and upper and lower disconnecting contacts of the main circuit, fixed by supporting insulators respectively in the upper part of the vertical frame and on the trolley, while the vertical frame contains mounting elements for mounting switching devices made with the possibility of connection with each other, and the aforementioned upper and lower disconnecting contacts are configured to of the connections with the respective switching devices, characterized in that the mounting members are configured to mount interchangeable modular switching devices of different functional purpose of each. ! 2. The withdrawable element according to claim 1, characterized in that the installation elements for mounting one of the interchangeable modular switching devices are made in the form of at least three holes arranged horizontally in a row on the side walls of the vertical frame, and installation elements for mounting the second interchangeable the modular switching device is made in the form of at least two holes arranged vertically in a row on the side walls of the vertical frame, while said holes are made with possibly combination with the corresponding mounting holes on interchangeable modular switching devices for their fastening on a vertical frame by means of, for example, bolted connections. ! 3. Roll-out element according to claim 1 or 2, characterized in that as replaceable modular switching devices

Description

The utility model relates to electrical engineering, namely, to withdrawable elements of complete switchgears intended for switching the energy of a three-phase alternating current at a rated voltage of 35 kV of an industrial frequency of 50 or 60 Hz at transformer substations and distribution points.

A roll-out element of a complete switchgear is known (patent UA No. 392, НВВ 13/00, publication date 08/30/1999), including a trolley with a vertical frame mounted on it and upper disconnecting contacts of the main circuit, fixed by supporting insulators on a vertical frame in it top part. The trolley contains a box-shaped stand on which a switching device is mounted, made in the form of a high-voltage vacuum circuit breaker, the upper contacts of which are connected via busbars to the upper disconnecting contacts of the main circuit, and the lower ones form the lower disconnecting contacts of the main circuit. Other types of high voltage circuit breakers can also be mounted on the box stand. The withdrawable element comprises a mechanism for moving relative to the corresponding compartment of the complete switchgear, configured to fix the withdrawable element in the operating position by means of a mechanism connected by a traction to the drive of the switching module.

The disadvantages of the known technical solutions are:

- limited scope, due to the design of the vertical frame and trolley, which do not allow the use of the withdrawable element more than one switching device;

- a relatively complex structure and high material consumption due to the presence of a box stand for mounting a switching device;

- the relatively high complexity of installation and dismantling of the switching device, due to the complex design of its mounting on the trolley.

A roll-out element of a complete switchgear is known (patent UA No. 75175, НВВ 33/00, publication date 03/15/2006), including a trolley with a vertical frame mounted on it and upper and lower disconnecting contacts of the main circuit. The vertical frame is made with the possibility of mounting switching devices located one below the other with the possibility of connection with each other. The upper and lower disconnecting contacts of the main circuit are fixed by means of supporting insulators, respectively, on a vertical frame in its upper part and on the trolley and are made with the possibility of connection, respectively, with the upper and lower switching devices. The latter are made in the form of a high-voltage vacuum circuit breaker and a high-voltage contactor, and by means of brackets are mounted on a vertical frame. The contacts of the high-voltage vacuum circuit breaker are connected via busbars to the upper disconnecting contacts of the main circuit and to the upper contacts of the high-voltage contactor, and the lower contacts of the latter via buses are connected to the lower disconnecting contacts of the main circuit. The latter are connected via hard cables to surge arresters. The withdrawable element contains a mechanism for moving relative to the corresponding compartment of the complete switchgear, configured to fix the withdrawable element in the operating and control positions, a mechanism for blocking the inclusion of a high-voltage vacuum circuit breaker at an intermediate position of the withdrawable element, blocking the movement of the withdrawable element from the operating position to the control and from the control to working when the high-voltage vacuum circuit breaker is on. Brackets are fixed on the roll-out cart for interaction with a curtain mechanism located inside said compartment. Another design of the vertical frame allows you to simplify the design of the roll-out element and reduce its material consumption compared to the previously considered technical solution.

A disadvantage of the known withdrawable element is the limited scope of its application, due to the design of the vertical frame, which does not allow the use of interchangeable modular switching devices with different functional purpose of each of them.

The utility model is based on the task of improving the known design of the roll-out element, in which, due to the different execution of the vertical frame, the field of application is expanded while improving the convenience of servicing the switching equipment.

The problem is solved by the fact that in the withdrawable element of the complete switchgear, including a trolley with a vertical frame mounted on it and the upper and lower disconnecting contacts of the main circuit, fixed by supporting insulators respectively in the upper part of the vertical frame and on the trolley, while the vertical frame contains mounting elements for mounting switching devices made with the possibility of connection with each other, and the aforementioned upper and lower disconnecting co The contacts are made with the possibility of connecting with the corresponding switching devices, according to the utility model, the mounting elements are made with the possibility of attaching replaceable modular switching devices of various functional purpose for each of them.

It is advisable that the mounting elements for mounting one of the removable modular switching devices were made in the form of at least three holes arranged horizontally in a row on the side walls of the vertical frame, and the mounting elements for mounting the second removable modular switching device were made in the form of at least at least two holes located vertically in a row on the side walls of the vertical frame, while the holes were made with the possibility of compatibility eniya with corresponding locating holes on removable modular switching devices for securing them on the vertical frame, for example by bolting.

It is advisable that high-voltage vacuum circuit breaker or busbar insert upper and high-voltage contactor or lower busbar are used as replaceable modular switching devices.

It is advisable that the withdrawable element contains brackets for interacting with the curtain mechanism located inside the corresponding compartment of the complete switchgear, a mechanism for moving relative to the compartment, made with the possibility of fixing the withdrawable element in the operating and control positions and the locking mechanism for switching on the high-voltage vacuum circuit breaker at the intermediate position of the withdrawable element and blocking the movement of the withdrawable element from the working position control and out of control in the workplace when the high-voltage vacuum circuit breaker.

The implementation of a vertical frame with elements for mounting interchangeable modular switching devices with different functional purpose of each of them allows you to more fully take into account the features of the operation of complete switchgears of various designs and thereby significantly expand the scope of the withdrawable element. The proposed technical solutions aimed at improving the design of the elements for mounting removable modular switching devices, as well as the composition of the mentioned modules and the design of the withdrawable element as a whole, are aimed at achieving the same task. The combination of these improvements allows you to create a unified design of the withdrawable element with interchangeable modular switching devices for various functional purposes.

The design of the utility model is illustrated by the example of a withdrawable element intended for the modernization of the switchgear KRU2-10 (6). The withdrawable element was developed by AVM AMPER LLC, Kremenchug, Ukraine.

The essence of the claimed utility model is illustrated by the figures of the drawings: in Fig. 1 - general view, front view; figure 2 is a General view, side view; figure 3 - module high-voltage contactor; figure 4 - module bus insert lower; figure 5 - module high-voltage vacuum circuit breaker; figure 6 - module bus insert top; Fig.7 is a General view with the modules of the high-voltage vacuum circuit breaker and busbar lower insert, side view.

The withdrawable element includes (Fig. 1, 2) a trolley 1 with a vertical frame 2 mounted on it, the upper 3 and lower 4 disconnecting contacts of the main circuit. The trolley 1 and the vertical frame 2 are made of profile and sheet metal.

Trolley 1 consists of a frame (not indicated) mounted on four wheels 5, fixed by bearings (not shown) on the axles 6. On the frame of the trolley 1, brackets 8 are fixed by bolting 7, and by supporting bolts 9, supporting insulators 10. Lower disconnecting contacts 4 of the main circuit are connected via busbars 11 to supporting insulators 10, and by means of a flexible cable 12 to surge arresters 13. In addition, stops 14 are made on the brackets 8 for interaction with the lever movement mechanism Barrier shutters positioned inside the switchgear apparatus housing (not shown).

The vertical frame 2 consists of two racks 15 made of a corner profile, on which the lower 16 and upper 17 facade sheets are fixed. To ensure rigidity of the said frame, the upper ends of the uprights 15 are interconnected by means of an angle 18. The upper disconnecting contacts of the main circuit 3 are fastened by means of tires 19 to the upper support insulators 20, mounted on brackets 21 located at an angle 18. Installation holes are made on the sides of the uprights 15 22 and 23 for mounting interchangeable switching modules one below the other. Three holes 22 are designed for mounting removable upper switching modules and are located horizontally in a row. Two holes 23 are designed for mounting removable lower switching modules and are arranged vertically in a row. On the front side of the uprights 15 are fixed handles 24 for moving the withdrawable element outside the compartment of the complete switchgear. Between the racks 15 behind the lower facade sheet 16 is mounted a mechanism for moving the withdrawable element inside the compartment of the complete switchgear, made in the form of a worm-screw transmission with a manual drive by means of a removable handle (not shown). The removable handle is configured to interact with the transmission through the hole 25 located on the right side of the lower facade sheet 16. The withdrawable element is moved inside the compartment of the complete switchgear and fixed in the working and control positions by means of levers 26 and rollers fixed to them (not indicated ) The levers 26 are mounted on a worm-screw transmission from the outside of the uprights 15 and are configured to interact with the rollers fixed to them with mates on the walls of the said compartment (not shown). The central part of the lower facade sheet 16 is made with a removable cover 27, and in its left part there is a counter 28 cycles of the module of the high-voltage contactor. On the upper facade sheet 17, there is a viewing window 29 and a cable bundle 30 of control circuits of replaceable upper and lower switching modules.

Replaceable modular switching devices are supplied with a withdrawable element and are made (Figs. 3-6) in the form of a high-voltage contactor 31 or a busbar insert for the lower 32 and / or a high-voltage vacuum circuit breaker 33 or a busbar insert for the upper 34. Busbar inserts for the lower 32 are made with support insulators 35. The busbar inserts upper 34 are made in the housing of the high-voltage vacuum circuit breaker 33, in which, instead of the movable 36 and fixed 37 contacts, tires 38 are mounted.

The mentioned modules are made with unified brackets 39-41, which contain holes 42 and 43 for fastening by bolted connections (not indicated), respectively, in the mounting holes 22 and 23 on the posts 15 of the vertical frame 2. The bracket 39 is made for mounting the module of the high voltage contactor 31, the bracket 40 - module busbar lower 32 and the bracket 41 - modules high-voltage vacuum circuit breaker 33 and busbar upper 34. In addition, replaceable switching modules 31, 33 and 34 contain unified input 44, 45 and output 46 buses for connection with the upper 3 and lower 4 disconnecting contacts of the main circuit and with each other. The input bus 44 is fixed to the input contacts 47 of the module of the high voltage contactor 31 and can be connected to the output contacts 48 of the modules of the high voltage vacuum circuit breaker 33 and the bus insert of the upper 34. The output bus 46 is fixed to the output contacts 49 of the module of the high voltage contactor 31 and can be connected to the upper 3 disconnecting contacts of the main circuit. The input bus 45 is made to connect the input contacts 50 of the modules of the high-voltage vacuum circuit breaker 33 and the bus insert of the upper 34.

Depending on the purpose of the withdrawable element, interchangeable modular switching devices 31-34 can be mounted one below the other on the vertical frame 2 in the following combinations:

- at tier I - module of the high-voltage vacuum circuit breaker 33, at tier II - module bus insert lower 32;

- at tier I - the module of the high-voltage vacuum circuit breaker 33, at tier II - the module of the high-voltage contactor 31;

- on tier I - busbar insert module top 34, on tier II - module high-voltage contactor 31;

- on tier I - the busbar insert module of the upper 34, on tier II - the busbar module of the lower 32.

Figure 7 shows an example of a withdrawable element with replaceable switching modules as part of a module of a high-voltage vacuum circuit breaker 33 and a bus insert lower 32. The first module 33, pre-mounted on the bracket 41, is located between the racks 15 and fixed in the holes 22 by means of bolted connections (not shown), and the second module 32 is likewise fixed in the holes 23. The module of the high-voltage vacuum circuit breaker 33 is connected to the upper 3 and lower 4 disconnecting contacts of the main circuit by, respectively enno, input bus 45 and bus 32 inserts lower.

The withdrawable element contains a locking mechanism that provides:

- blocking that does not allow the withdrawable element to be moved from the working position to the control and from the control to working when the high-voltage vacuum circuit breaker module 33 is on;

- blocking, preventing the inclusion of the module of the high-voltage vacuum circuit breaker 33 at an intermediate (between the working and control) position of the withdrawable element.

The said locking mechanism consists of a latch 51, rigidly connected to the handle of the lock 52 on the rocker mechanism 53, which is pivotally connected to the corresponding mechanism 56 by means of the rod 54 and the bracket 55 located in the module of the high-voltage vacuum circuit breaker 33. In addition, one of the racks 15 is fixed a sliding contact 57 for grounding the withdrawable element when moving it inside the compartment of the withdrawable element, and on the lower 16 front sheet there is a plate 58 with an explanation for controlling the mechanism for moving the withdrawable element about the item.

The operation of the inventive withdrawable element is as follows.

Taking into account the purpose of the withdrawable element, the necessary replaceable modular switching devices are pre-mounted on it. In this example, the withdrawable element is equipped (Fig. 7) with a module 33 of a high-voltage vacuum circuit-breaker with a spring drive of the VB4-P series manufactured by AVM AMPER LLC (Kremenchug, Ukraine) and a bus insert module lower 32. For this, module 33 is pre-mounted on the bracket 41, after which it is inserted between the racks 15 until the axes of the holes 22 and 43 coincide and are fixed by bolt connections, and the module 32 is similarly mounted on the bracket 40 and installed on the outside of the racks 15 until the axes of the holes 23 and 42 coincide and close plyayut by bolting. The input contacts 50 of the module 33 through the input bus 45 are connected to the upper 3 disconnecting contacts of the main circuit, and the output contacts 48 through the bus insert module of the lower 32 are connected to the lower 4 disconnecting contacts of the main circuit.

The withdrawable element by means of the trolley 1 is rolled into the compartment of the complete switchgear (not shown), in which it can occupy two positions:

- working, in which the main and auxiliary circuits are closed by means of the upper 3 and lower 4 disconnecting contacts of the main circuit and the cable bundle 30 of the control circuits of the replaceable upper and lower switching modules;

- control, in which the main circuit is open, the auxiliary circuit is closed.

In the repair position, the withdrawable element is located outside the compartment.

In the operating and control positions of the withdrawable element, the operation of the modules mounted on it is carried out in accordance with the instructions for their operation as part of the corresponding complete switchgears.

Studies of the proposed technical solution have confirmed its performance and achievement of the task. The implementation of the withdrawable element with unified elements for mounting interchangeable modular switching devices with different functional purpose of each of them allowed expanding the scope of its application in complete switchgears while improving the convenience of maintenance of switching equipment.

Claims (4)

1. Roll-out element of a complete switchgear, including a trolley with a vertical frame mounted on it and upper and lower disconnecting contacts of the main circuit, fixed by supporting insulators, respectively, in the upper part of the vertical frame and on the trolley, while the vertical frame contains mounting elements for mounting switching devices made with the possibility of connection with each other, and the aforementioned upper and lower disconnecting contacts are configured to of the connections with the respective switching devices, characterized in that the mounting members are configured to mount interchangeable modular switching devices of different functional purpose of each. 2. The withdrawable element according to claim 1, characterized in that the installation elements for mounting one of the interchangeable modular switching devices are made in the form of at least three holes arranged horizontally in a row on the side walls of the vertical frame, and installation elements for mounting the second interchangeable the modular switching device is made in the form of at least two holes arranged vertically in a row on the side walls of the vertical frame, wherein said holes are made with possibly combination with the corresponding mounting holes on interchangeable modular switching devices for their fastening on a vertical frame by means of, for example, bolted connections. 3. The withdrawable element according to claim 1 or 2, characterized in that as replaceable modular switching devices use a high-voltage vacuum circuit breaker or busbar insert top and high-voltage contactor or busbar insertion lower. 4. The withdrawable element according to claim 1, characterized in that it comprises brackets for interacting with the curtain mechanism located inside the corresponding compartment of the complete switchgear, a mechanism for moving relative to said compartment, configured to fix the withdrawable element in the operating and control positions, and mechanism for blocking the inclusion of a high-voltage vacuum circuit breaker at an intermediate position of the withdrawable element and blocking the movement of the withdrawable element from the working positions in the control and from the control to the working when the high-voltage vacuum circuit breaker is turned on.