CN212210013U

CN212210013U - Modular switchgear

Info

Publication number: CN212210013U
Application number: CN202020797098.9U
Authority: CN
Inventors: 吴昊; 李锦彪; 裴军
Original assignee: Chint Electric Co Ltd
Current assignee: Chint Electric Co Ltd
Priority date: 2019-10-12
Filing date: 2020-05-13
Publication date: 2020-12-22
Anticipated expiration: 2030-05-13
Also published as: CN111555170A

Abstract

The utility model discloses a modularization switchgear, its characterized in that: the device comprises a cable chamber module, a breaker chamber module, a bus chamber module, a low-pressure chamber, a breaker chamber pressure relief channel module, a bus system, a grounding system and a rear expansion chamber module, and can be set into double-layer modular equipment on the basis. The utility model adopts a small modular design, which is convenient for processing, transferring and installing; if the components inside the equipment are in failure or arcing occurs in a certain compartment, the specific module can be conveniently and quickly replaced by detaching the specific module without integral replacement, so that the maintenance time and cost are reduced; meanwhile, the requirements of different customers can be met, the manufacturing and management of a manufacturing plant are facilitated, and the production efficiency is improved.

Description

Modular switchgear

Technical Field

The utility model relates to a modularization switchgear, especially a medium-pressure air insulation exchanges metal-enclosed switchgear.

Background

At present, medium-voltage air-insulated alternating-current metal-enclosed switchgear is mainly divided into 4 compartments including a low-voltage chamber module, a breaker chamber module, a cable chamber module and a bus chamber module. Most of frames of the existing products are integrated or divided into a front side plate and a rear side plate, and a single side plate is large in size and heavy in weight and is inconvenient to process, transport and install. And when components and parts in the installation cabinet, because the frame casing has been assembled, the internal size space of cabinet is less, and inconvenient like the installation of inside components and parts such as contact box, still need be with the help of extra robotic arm sometimes, take a lot of trouble hard, simultaneously, also inconvenient further inspection to the inside critical dimension of product. If the components in the equipment are in fault or arcing problem occurs in a certain compartment during the operation of the equipment, the whole product equipment is usually required to be dismantled and removed for integral replacement, the difficulty of field operation is high, and the maintenance time and cost are increased. Meanwhile, as the customers have a plurality of different system schemes, the switch equipment manufacturer has a plurality of different switch equipment schemes, the manufacture and management of the manufacturer are not facilitated, and the production efficiency is reduced.

CN201621386545.1 is a modular switch cabinet, the module of which includes a gas box, in order to insulate the switch equipment by gas, gas leakage is easily caused. CN201711115411.5 a novel switch cabinet, which comprises a first separable contact box and a second separable contact box, wherein a removable modular functional unit is arranged in the breaker chamber module, and the removable modular functional unit is electrically connected with the main bus chamber module through the first separable contact box and is electrically connected with the cable chamber module through the second separable contact box; the characteristics recited in the claims further include a roller fixed to the lower end of the removable modular functional unit, the rail is disposed inside the breaker chamber module, the roller rolls on the rail for moving the removable modular functional unit, and a separable contact box is used, which is costly.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the existing switch equipment is time-consuming and labor-consuming in installation, functional modules cannot be added or deleted, the whole disassembly is required when the switch equipment breaks down, the production efficiency is low, and the problems of special requirements such as an upper wiring scheme and an ultra-large mutual inductor cannot be met.

In order to solve the technical problem, the utility model provides a modular switch device, its characterized in that: including cable chamber module, circuit breaker room module, generating line room module, low-pressure chamber and circuit breaker room pressure release passageway module, generating line system, ground system and back extension room module, cable chamber module top is located to circuit breaker room module and generating line room module, circuit breaker room module top is located to low-pressure chamber and circuit breaker room pressure release passageway module, and the rear of circuit breaker room module and low-pressure chamber and circuit breaker room pressure release passageway module is located to the generating line room module, in generating line room module was located to generating line system, in ground system located the cable chamber module, back extension room module is long and thin structure, locates cable chamber module rear and communicates with each other with the cable chamber module, as the temperature rise and the pressure release passageway of cable chamber module.

Preferably, an upper wiring assembly is arranged in the rear expansion chamber module and used for leading current into the switchgear from the top of the switchgear, and the upper wiring assembly comprises a wall bushing arranged at the top of the rear expansion chamber module and a busbar connected into the rear expansion chamber module from the wall bushing.

Preferably, a current transformer is arranged in the cable chamber module, and a mounting plate for mounting a large current transformer is arranged in the rear expansion chamber module.

Preferably, there are two bus bar room modules, and the two bus bar room modules are arranged on the cable room module side by side.

Preferably, the system also comprises a small bus chamber module used as a common power supply and a signal, wherein the small bus chamber module is arranged above the low-pressure chamber and the breaker chamber pressure relief channel module.

Preferably, two fixed contacts and a contact box for mounting the fixed contacts are arranged in the circuit breaker chamber module.

Preferably, the low-pressure chamber and circuit breaker chamber pressure relief channel module includes a low-pressure chamber and a circuit breaker chamber pressure relief channel, and the circuit breaker chamber pressure relief channel is disposed behind the low-pressure chamber.

Preferably, a pressure relief plate is arranged in the pressure relief channel of the breaker chamber or at the top of the breaker chamber module.

The utility model discloses a further technical scheme provides another modularization switchgear, its characterized in that: the low-voltage switch cabinet comprises an upper layer switch device and a lower layer switch device, wherein the lower layer switch device comprises a cable chamber module, a breaker chamber module, a bus chamber module, a low-voltage chamber, a breaker chamber pressure relief channel module, a bus system, a grounding system and a rear expansion chamber module; the upper-layer switch equipment is arranged above the lower-layer switch equipment and comprises a cable chamber module, a breaker chamber module and a bus chamber module which are the same as the layout of the lower-layer switch equipment.

Preferably, the upper level switchgear and the lower level switchgear share a rear expansion room module.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model adopts a small modular design, so that the size of the part of each module is greatly reduced, and the processing, the transportation and the installation are convenient; if the components inside the equipment are in failure or arcing occurs in a certain compartment, the specific module can be conveniently and quickly replaced by detaching the specific module without integral replacement, so that the maintenance time and cost are reduced; meanwhile, due to the modular design, different requirements of customers can be met simply by replacing different modules in the face of different system scheme requirements, modularization, simplification and parallelization production and installation are facilitated, manufacturing and management of a manufacturing plant are facilitated, and production efficiency is improved.

The design of back extension room module lets the equipment have sufficient space installation, and convenient and fast has more satisfied special demands such as last wiring scheme, super large mutual-inductor. Meanwhile, the expansion module can also be used as a cable chamber pressure relief channel of the switch device and a most main temperature rise channel of the cable chamber, components and copper bars in the cable chamber can be used, and heat generated in operation can be quickly and conveniently removed from the top through the module. Because the structure is a slender structure, the structure has good chimney effect, and the overall temperature of the equipment is improved.

On the other hand, to double-deck or double bus switchgear, all can realize through the modularization of this patent to expand room module through the back and promote its whole temperature resistant, the resistant arc performance of burning.

The switch equipment of the utility model is air-insulated, and does not need to be filled with additional other gases; just the utility model discloses switchgear does not need the contact box of disconnect-type to the module lower extreme does not need the gyro wheel to slide, only needs a set of ordinary contact box, all installs in the circuit breaker compartment, compares disconnect-type contact box reduce cost.

Drawings

Fig. 1 is a schematic structural diagram of a modular switchgear of the present invention;

FIG. 2 is a schematic diagram of the structure of each module;

figure 3 is a cross-sectional view of a circuit breaker chamber module contact box;

fig. 4 is a schematic structural view of a wiring scheme on the modular switch device of the present invention;

fig. 5 is a schematic structural view of the modular switchgear of the present invention for mounting a large current transformer;

FIG. 6 is a schematic diagram of a double bus switchgear configuration;

fig. 7 is a schematic structural diagram of the modular switchgear of the present invention.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses a switch device according to functional module and do benefit to demands such as processing, installation, inspection and maintenance, innovative divide into 7 module systems: including cable chamber module 1, circuit breaker room module 2, generating line room module 3, low-pressure chamber and circuit breaker room pressure release passageway module 4, bus-bar system 6, earthing system 7 and back extension room module 10, install in cable chamber module 1 top with generating line room module 2, low-pressure chamber and circuit breaker room pressure release passageway module 4 install in circuit breaker room module 2 top, generating line room module 3 installs the rear at circuit breaker room module 2 and low-pressure chamber and circuit breaker room pressure release passageway module 4. The upper surface of the cable chamber module 1 is of a front-low back-high structure which is convenient for positioning the breaker chamber module 2, the breaker chamber module 2 is arranged at a lower position above the cable chamber module 1, and the bus chamber module 3 is arranged at a higher position above the cable chamber module 1. The bus system 6 is arranged in the bus chamber module 3, the grounding system 7 is arranged in the cable chamber module 1, the rear expansion chamber module 10 is of a long and thin structure, is arranged behind the cable chamber module 1 and is communicated with the cable chamber module 1, and serves as a temperature rise and pressure release channel of the cable chamber module 1. And positioning holes or positioning pins are uniformly distributed on the connection surfaces of the modules, and the modules are quickly spliced through the positioning holes or the positioning pins.

The cable chamber module 1 is located at the bottom of the switchgear, and has interfaces at its top and rear ends for connection with other adjacent modules, and optionally has a current transformer 12 and an arrester or other accessories disposed therein.

As shown in fig. 3, the breaker chamber module 2 is a core module of the switchgear, and is located in the front middle of the whole switchgear, and the top end, the rear end, and the lower end of the switchgear are respectively provided with an interface connected to other adjacent modules, and inside the switchgear, a fixed contact 15, a contact box 11, and a valve mechanism may be installed, and a handcart, a breaker, a contactor, a load switch, or other functional handcart may be configured. The module can facilitate the internal installation and inspection of parts such as the static contact 15, the contact box 11, the valve mechanism and the like. In this embodiment, two contact boxes 11 are installed on one side of the circuit breaker room module 2 connected with the bus bar room module 3, the contact boxes 11 are installed in the circuit breaker room module 2 through contact box installation plates 16, and static contacts 15 are installed in the contact boxes 11.

The bus chamber module 3 is positioned at the middle upper part of the switch device, and the front end, the bottom end and the rear end of the bus chamber module are provided with interfaces with other adjacent modules, so that the bus system 6 is convenient to install and maintain. The top of the bus chamber module 3 is provided with a pressure relief plate, and when the bus chamber module 3 has arcing faults, the pressure relief plate can quickly release energy to protect other modules.

The low-voltage chamber and circuit breaker chamber pressure relief channel module 4 is located at the front upper part of the whole switch device, the bottom end and the rear end of the low-voltage chamber and circuit breaker chamber pressure relief channel module are provided with interfaces of other adjacent modules, and different control protection schemes can be arranged inside the low-voltage chamber and circuit breaker chamber pressure relief channel module according to the requirements of customers. Low-pressure chamber and circuit breaker room pressure release passageway module 4 includes low-pressure chamber 21 and circuit breaker room pressure release passageway 17, and circuit breaker room pressure release passageway 17 is located the rear of low-pressure chamber 21, when the arcing trouble appears in circuit breaker room module 2, can pass through circuit breaker room pressure release passageway 17 quick release energy, protects other modules. A pressure relief plate may be disposed within the circuit breaker chamber pressure relief channel 17, and in some cases, may also be disposed on top of the circuit breaker module 2.

The utility model relates to a modular switch device is still including the little generating line room module 5 who is used as public power source and signal, and little generating line room module 5 is installed in low-pressure room and 4 tops of circuit breaker room pressure release passageway module.

The bus system 6 is an independent system installed in the bus chamber module 3, and comprises a main bus 8 and a bus sleeve 9 sleeved on the main bus 8, and can be set to different current levels according to different customer requirements.

The earthing system 7 is a separate system installed in the cable chamber module 1, and includes an earthing switch 13 and an earthing switch operating mechanism 14 for controlling the earthing switch 13, which can be selected according to the customer's needs and can be set to different current levels.

The rear expansion chamber module 10 is an expansion module located at the rear end of the switchgear, after all front modules are assembled, the rear expansion chamber module 10 is connected with the front bus chamber module 3 and the cable chamber module 1 through bolts, no partition plate is arranged on the rear side of the cable chamber module 1, the rear expansion chamber module is directly connected with the rear expansion module 10, positioning pins are arranged on the upper side and the lower side of the front expansion chamber module 10, the bus chamber module 3 and the cable chamber module 1 can be conveniently and quickly assembled with positioning holes, and assembly efficiency and accuracy are improved.

The rear expansion chamber module 10 is of a slender structure, so that the rear expansion chamber module has a good chimney effect and improves the overall temperature of the cabinet body; the heat dissipation device can be used as a temperature rise channel of the cable chamber module 1, and heat generated by components and copper bars in the cable chamber module 1 during operation can be quickly and conveniently discharged from the top through the rear expansion chamber module 10; when a fault arc is generated inside the cable chamber module 1, the rear expansion chamber module 10 is also the most important pressure relief channel of the cable chamber module 1, and the fault arc energy can be quickly released through the module. The top of the rear expansion chamber module 10 is provided with an openable pressure relief plate with meshes, so that hot air can smoothly pass through the pressure relief plate when the pressure relief plate is in normal operation, the temperature of the cable chamber module 1 is reduced, and meanwhile, the pressure relief plate with the meshes can effectively isolate the entering of foreign matters; when the cable chamber module 1 is in fault, the pressure relief plate with the meshes can be quickly opened to form a pressure relief channel, so that the capacity generated by fault electric arc is quickly released, and the influence on other modules is reduced.

As shown in fig. 4 and 5, the rear expansion room module 10 can be configured as an improved system with special requirements such as an up-line solution and a large current transformer 12 according to customer requirements. When the demand is a top wiring scheme, the improved system is that a wall bushing 18 is installed at the top of the rear expansion chamber module 10, and a corresponding bus bar 19 is connected from the wall bushing 18, so that the current required by customers can be led into the switchgear from the top of the switchgear. Compared with the conventional method, the method can be realized by only replacing the rear expansion chamber module 10 and keeping other modules unchanged, is convenient and quick, and reduces the non-standard design quantity of the project; when the customer demand is large-scale current transformer 12, because current transformer 12 is bulky, long length, general current scheme all uses the rear side board of super large, increases the degree of depth of back cabinet. The area size of the rear side plate is large, and the rear side plate is inconvenient to process and install. In the scheme, only the shell depth of the rear expansion chamber module 10 needs to be increased independently, the additional mounting plate 20 is added, other modules are kept unchanged, the requirement can be met, and the processing and mounting are facilitated.

The different modules and systems of the switch device are arranged and connected in an up-down, front-back and other modes, and the connection mode can be different modes such as bolt connection or riveting connection.

The utility model discloses the position overall arrangement of each module can be arranged according to this scheme, also can exchange the overall arrangement and realize the switchgear function. Some modules may also change shape without affecting their functionality. The modular systems allow easy and quick configuration into different switchgear solutions and are medium voltage air insulated withdrawable switchgear with the LSC2B class. As shown in fig. 6, when a double-bus switchgear is to be provided, two bus bar room modules 3 are mounted side by side on the cable room module 1. As shown in fig. 7, the utility model discloses also can set double-deck modularization switchgear into, it is two-layer from top to bottom including, regard original individual layer modularization equipment as lower floor's switchgear, add again on lower floor's switchgear with the same cable chamber module 1 of lower floor's switchgear overall arrangement, circuit breaker room module 2 and generating line room module 3 as upper switchgear, can realize bilayer structure, upper switchgear and lower floor's switchgear share a back extension room module 10, promote its whole temperature-resistant, the arcing resistance can through back extension room module 10.

Claims

1. A modular switching apparatus, characterized in that: the device comprises a cable chamber module (1), a breaker chamber module (2), a bus chamber module (3), a low-pressure chamber and breaker chamber pressure relief channel module (4), a bus system (6), a grounding system (7) and a rear expansion chamber module (10), wherein the breaker chamber module (2) and the bus chamber module (3) are arranged above the cable chamber module (1), the low-pressure chamber and breaker chamber pressure relief channel module (4) is arranged above the breaker chamber module (2), the bus chamber module (3) is arranged behind the breaker chamber module (2), the low-pressure chamber and breaker chamber pressure relief channel module (4), the bus system (6) is arranged in the bus chamber module (3), the grounding system (7) is arranged in the cable chamber module (1), the rear expansion chamber module (10) is of a long and thin structure, is arranged behind the cable chamber module (1) and is communicated with the cable chamber module (1), as a temperature rise and pressure relief channel for the cable compartment module (1).

2. A modular switching device, as claimed in claim 1, characterized in that: an upper wiring assembly is arranged in the rear expansion chamber module (10) and used for leading current into the interior of the switch equipment from the top of the switch equipment, and the upper wiring assembly comprises a wall bushing (18) arranged at the top of the rear expansion chamber module (10) and a busbar (19) connected into the interior of the rear expansion chamber module (10) from the wall bushing (18).

3. A modular switching device, as claimed in claim 1, characterized in that: a current transformer (12) is arranged in the cable chamber module (1), and a mounting plate (20) for mounting the large current transformer (12) is arranged in the rear expansion chamber module (10).

4. A modular switching device, as claimed in claim 1, characterized in that: the number of the bus chamber modules (3) is two, and the two bus chamber modules (3) are arranged on the cable chamber module (1) side by side.

5. A modular switching device, as claimed in claim 1, characterized in that: the low-voltage circuit breaker further comprises a small bus chamber module (5) used as a public power supply and a signal, wherein the small bus chamber module (5) is arranged above the low-voltage chamber and the breaker chamber pressure relief channel module (4).

6. A modular switching device, as claimed in claim 1, characterized in that: and two fixed contacts (15) and a contact box (11) for installing the fixed contacts (15) are arranged in the circuit breaker chamber module (2).

7. A modular switching device, as claimed in claim 1, characterized in that: low-pressure chamber and circuit breaker room pressure release passageway module (4) include low-pressure chamber (21) and circuit breaker room pressure release passageway (17), and the rear of low-pressure chamber (21) is located in circuit breaker room pressure release passageway (17).

8. A modular switching device, as claimed in claim 7, characterized in that: and a pressure relief plate is arranged in the pressure relief channel (17) of the breaker chamber or at the top of the breaker chamber module (2).

9. A modular switching apparatus, characterized in that: the low-voltage chamber and circuit breaker chamber decompression channel module (4) is arranged above the circuit breaker chamber module (2), the bus chamber module (2) and the bus chamber module (3) are arranged behind the circuit breaker chamber module (2), the low-voltage chamber and circuit breaker chamber decompression channel module (4), the bus chamber module (3) is arranged behind the circuit breaker chamber module (2), the low-voltage chamber and circuit breaker chamber decompression channel module (4), the bus system (6) is arranged in the bus chamber module (3), the grounding system (7) is arranged in the cable chamber module (1), and the rear expansion chamber module (10) is of a long and thin structure, the temperature rise and pressure release channel is arranged behind the cable chamber module (1), is communicated with the cable chamber module (1) and is used as a temperature rise and pressure release channel of the cable chamber module (1); the upper-layer switch equipment is arranged above the lower-layer switch equipment and comprises a cable chamber module (1), a breaker chamber module (2) and a bus chamber module (3) which are the same as the layout of the lower-layer switch equipment.

10. A modular switching device, as claimed in claim 9, characterized in that: the upper and lower level switchgear devices share a rear expansion room module (10).