CN205944873U - A box-type gas-insulated metal-enclosed switchgear - Google Patents

Abstract

The utility model discloses a box-type gas-insulated metal-enclosed switchgear, which comprises a secondary box body; the secondary box body comprises a module line placing cavity and a cable chamber which are arranged up and down, wherein the module line placing cavity and the cable chamber respectively comprise a plurality of sealed compartments, and the sealed compartments are made of cold-rolled steel plates or stainless steel plates with the thickness of 3-5 MM; and each sealed compartment is provided with an independent pressure relief channel; and an electric button is arranged on the upper part of the front side surface of the secondary box body. The utility model discloses can let the secondary case reduce the volume, can let box gas insulated metal enclosed switchgear's characteristics promote one step more, let box gas insulated metal enclosed switchgear more have an advantage. Simultaneously, the optimization on the circuit and the characteristic that the volume can be reduced and the box-type gas insulated metal-enclosed switchgear can be further improved by adopting a double-layer terminal to ensure the secondary box.

Description

A box-type gas-insulated metal-enclosed switchgear

technical field

The utility model relates to the field of electrical equipment, in particular to an electrical equipment, in particular to a box-type gas-insulated metal-enclosed switchgear.

Background technique

At present, the west of my country is affected by external environmental conditions such as high altitude, condensation, salt spray and pollution, and there are more and more construction projects requiring high reliability and small space, such as high-rise buildings, concentrated industrial and commercial areas, and rail transit. C-GIS (cabinet gas insulated metal-enclosed switchgear) has become the best power distribution equipment. Not only does it not have the influence of the atmospheric state, but the cabinet-shaped shell is small in size, which saves the floor space, and is more coordinated and adaptable to the surrounding environment in terms of layout, size and appearance, so that the comprehensive economic benefits of engineering construction are very obvious. .

Because C-GIS has extremely high requirements on process equipment and processing is very difficult, domestic enterprises have developed a batch of applicable cabinet-type C-GIS through introduction, digestion and cooperation, which not only passed the type test, but also entered mass production. Some of them have been serialized, including new products that use sealed pressure system and protection measurement and control technology, and apply insulation aging on-line detection technology and temperature rise wireless sensing technology to improve the quality of C-GIS status monitoring and fault diagnosis technology. received extra attention.

The volume of the existing box-type gas-insulated metal-enclosed switchgear is still relatively large in some sites, and even some special sites cannot use box-type gas-insulated metal-enclosed switchgear due to volume problems.

Thereby prior art still needs to improve and improve.

Utility model content

In view of the shortcomings of the prior art above, the purpose of this utility model is to provide a box-type gas-insulated metal-enclosed switchgear to further optimize the volume of the existing box-type gas-insulated metal-enclosed switchgear.

In order to achieve the above object, the utility model has taken the following technical solutions:

A box-type gas-insulated metal-enclosed switchgear, which includes a secondary box body; the secondary box body includes a module line placement cavity and a cable room arranged up and down, and the module line placement cavity and cable room are respectively It includes a number of sealed compartments, wherein the sealed compartments are made of cold-rolled steel plates or 3~5MM thick stainless steel plates; and each sealed compartment is provided with an independent pressure relief channel; the upper part of the front side of the secondary box body is provided with an electric button .

The box-type gas-insulated metal-enclosed switchgear, wherein, the side of the secondary box body is provided with sheet metal parts.

The box-type gas-insulated metal-enclosed switchgear, wherein, the module line placement cavity is provided with double-layer terminals; the connection positions of the upper and lower layers of the terminal are staggered by half the thickness of the terminal.

Compared with the prior art, the box-type gas-insulated metal-enclosed switchgear provided by the utility model can reduce the volume of the secondary box, further improve the characteristics of the box-type gas-insulated metal-enclosed switchgear, and make the box-type gas-insulated metal-enclosed switchgear further improved. Metal-enclosed switchgear is more advantageous. At the same time, the optimization of the line and the use of double-layer terminals allow the secondary box to be reduced and the volume to be able to maximize the characteristics of the box-type gas-insulated metal-enclosed switchgear (one of the biggest advantages of the box-type gas-insulated metal-enclosed switchgear is the cabinet Type housing volume is very small) further improved.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of a box-type gas-insulated metal-enclosed switchgear provided by the utility model.

Fig. 2 is a comprehensive relay protection structure in the box-type gas-insulated metal-enclosed switchgear provided by the utility model.

Fig. 3 is a schematic circuit diagram of the current input protection device in the box-type gas-insulated metal-enclosed switchgear provided by the utility model.

Fig. 4 is a schematic circuit diagram of the electric operating panel in the box-type gas-insulated metal-enclosed switchgear provided by the utility model.

Fig. 5 is a list of equipment in the cabinet of the box-type gas-insulated metal-enclosed switchgear provided by the present invention.

Among them, 100 is the secondary box body; 200 is the electric button; 300 is the sheet metal; 400 is the module circuit placement cavity; 500 is the cable room.

detailed description

The utility model provides a box-type gas-insulated metal-enclosed switchgear. In order to make the purpose, technical solution and effect of the utility model clearer and clearer, the utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

C-GIS combines various high-voltage components into several standard modules, which can meet the requirements of various main wiring and meet the needs of various application occasions through combination. It is transported to the site as a whole, hoisted in place as a complete set, and does not involve the treatment of SF6 gas during installation. It is also very convenient to increase the number of incoming and outgoing cables through the reserved cable socket for expansion, or add cabinets to expand to one or both sides of the cabinet. The high-voltage components are set in the box-shaped air-filled shell, which makes it easier to use cables as the introduction and extraction of the power supply, more convenient to connect and arrange with the transformer, and is not limited by space, making it easier to form a system.

Please refer to Fig. 1, the box-type gas-insulated metal-enclosed switchgear provided by the utility includes: a secondary box body 100; the secondary box body 100 includes a module circuit placement cavity 400 and a cable room 500 (the There is a door panel on the cable room 500); the upper part of the front side of the secondary box body is provided with an electric button 200, and the electric button is arranged on the electric operation panel, which is used for the distribution of the load switch of the box-type gas-insulated metal-enclosed switchgear. close.

One of the biggest advantages of the box-type gas-insulated metal-enclosed switchgear is that the cabinet-type shell is small in size, which saves the floor space, and the present invention further optimizes the volume of the cabinet to make the cabinet volume more suitable for more scenes and layouts Let the cabinet further improve the adaptability of the cabinet, and further solve the problem that some special sites cannot use box-type gas-insulated metal-enclosed switchgear due to volume problems. This design is mainly for those special scenarios and for those special requirements. customers and other issues.

Box-type gas-insulated metal-enclosed switchgear (commonly known as inflatable cabinet) is mainly used in power transmission and distribution systems to receive and distribute electric energy, and to implement control, protection, and monitoring under environmental conditions such as high humidity (or condensation), high altitude, and pollution. Compared with other products, it has obvious advantages in terms of reliability, miniaturization, economy, applicability and safety.

The components of the inflatable cabinet are arranged reasonably and sealed well, the scheme is complete and expandable, the operation is reliable and safe, and the on-site installation is convenient and simple. It is a new type of power distribution device combined with advanced components and high-tech manufacturing technology. The switch cabinet is fully sealed and fully insulated. Structure; the bus bar, switch and point parts are completely enclosed in the stainless steel shell. It can ensure the normal operation of the switch even in extreme cases such as short water bubbles; it adopts modular and standardized design, simple and compact structure, simple structure, flexible operation, reliable connection, convenient installation, etc., and is suitable for various applications. City Residential power distribution, small secondary substations, switching stations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, stadiums, railways, tunnels, etc.

A specific embodiment is provided below. In this embodiment, the module line placement cavity 400 is divided into two incoming line cabinets and several outgoing line cabinets. As shown in Figure 5, the incoming line cabinet and the outgoing line cabinet can be arranged side by side in the outer box, and the main equipment in the cabinet is shown in the table list in Figure 5. Among them, the load switch adopts the JEC-12 series switch produced by "Jichuang", of course, other load switches can also be used; the manual/electric operating mechanism is equipped with a barometer; Other comprehensive relays can also be used; in addition, a two-in-one mechanical interlock is also used; the air pressure watch has an alarm function; the outer box is made of stainless steel, sprayed with national grid green.

Further, as shown in Figure 2, it is a comprehensive relay protection structure in the box-type gas-insulated metal-enclosed switchgear. It includes: power supply, current input, non-electrical input, communication port and relay output. Among them, the relay output includes: protection tripping, protection closing, action signal and alarm signal.

Please refer to FIG. 3 and FIG. 2 together. FIG. 3 is a schematic diagram of the current input protection device in the box-type gas-insulated metal-enclosed switchgear. As shown in the figure, the ports Ia*, Ic* and Id* of the current input (3D) of the integrated relay protection structure are respectively grounded through the overcurrent protection circuits LHa, LHc and LHd; the ports Ia, Ic and Id are grounded; Ib and Ib *Port floating.

As shown in Figure 4, the electric operation panel includes a power supply part 201, an opening control part 202, an energy storage/closing control part 203, an indicating part 204, and a motor and coil driving part 205. In Figure 4, S01 and S02 represent buttons Switches, S5.2, S5.3, S6, S7, S7.2, S8, S13, S14, S15, etc. represent switches, K1, K2, K3, K4, etc. represent relays (including relay coils and relay switches), M Indicates the motor, LD (opening indication), HD (closing indication) indicate indicator lights. In the circuit schematic diagram of the electric button, two power sources are output through a fuse, one of which supplies power to the opening control part 202, energy storage/closing control part 203, indication part 204, etc., and the other to the motor and coil drive part 205 for power.

Further, in the box-type gas-insulated metal-enclosed switchgear, the side of the secondary box body is provided with sheet metal parts 300 . In addition, in the box-type gas-insulated metal-enclosed switchgear, the module line placement cavity and the cable room respectively include several sealed compartments, wherein the sealed compartments are made of cold-rolled steel plates or 3-5MM thick stainless steel plates; and Each sealed compartment is provided with an independent pressure relief channel. In this embodiment, the inflatable compartment is made of 3~5MM thick stainless steel plate, which is welded by a welding robot after being processed by a CNC machine tool, with less welding deformation and good air tightness. It is welded after bending, and has the characteristics of high precision and good strength; each functional unit is an independent module, and the assembly is extremely convenient. In addition, each sealed compartment of the cabinet is equipped with an independent pressure relief channel to maximize personal safety and equipment operation.

The box-type shell is welded by robots, no air leakage, and a small footprint. Domestic mainstream manufacturers also rise up to meet the challenge, using advanced plate blanking, bending and welding equipment, the sealed box adopts thin stainless steel welding structure, and uses laser welding, helium mass spectrometer leak detection and other technologies to make the precision and rigidity of the sealed box Increased, the air leakage rate decreased. Therefore, the cabinet structure is developed into an armored cabinet with flexible combination and better performance. Each air chamber is independent. flexible.

Because the conductive part of the main circuit of C-GIS is sealed in insulating gas such as SF6, and the high-voltage live conductor is sealed, it has the advantages of high reliability and suitable for frequent operation, which meets the requirements of large rated current caused by the sharp increase in load of the power grid substation. , Large short-circuit breaking current, frequent operation, low overvoltage and other technical requirements; it can also accurately receive and distribute electric energy, and implement effective control, protection and detection of circuits. For example, many users have not found the danger of electric shock and fire when using C-GIS, which ensures the safety of equipment and operators. Various high-voltage components are either sealed with gas or sealed with metal, and the parts are free from corrosion and rust. Phenomenon, and there is no resulting operation and conduction influence, requiring little maintenance work. The vacuum circuit breaker used has long service life, stable performance, and maintenance-free or less maintenance.

Furthermore, in the box-type gas-insulated metal-enclosed switchgear, double-layer wiring terminals are arranged in the module line placement cavity; the wiring positions of the upper and lower layers of the wiring terminals are staggered by half the thickness of the terminal.

In summary, the box-type gas-insulated metal-enclosed switchgear provided by the utility model includes a secondary box body; the secondary box body includes a module line placement cavity and a cable room arranged up and down; The upper front side of the box body is provided with an electric button 200 so that the volume of the secondary box can be reduced, which can further improve the characteristics of the box-type gas-insulated metal-enclosed switchgear, and make the box-type gas-insulated metal-enclosed switchgear more advantageous. At the same time, the optimization of the circuit and the use of double-layer terminals can reduce the size of the secondary box and further improve the characteristics of the box-type gas-insulated metal-enclosed switchgear.

It can be understood that those skilled in the art can make equivalent replacements or changes according to the technical solution of the utility model and its utility model concept, and all these changes or replacements should belong to the appended claims of the utility model protected range.

Claims (5)

1. a kind of box type gas insulated metal sealing switchgear is it is characterised in that include secondary case body；Described secondary case is originally Body includes module circuitry setting up and down and puts chamber and cable vault, and described module circuitry puts chamber and cable vault includes respectively Some sealed compartments, wherein, sealed compartments adopt cold-rolled steel sheet or 3 ~ 5MM thickness corrosion resistant plate；And each sealed compartments are provided with solely Vertical pressure release passage；The leading flank top of described secondary case body is provided with power button.

2. box type gas insulated metal sealing switchgear according to claim 1 it is characterised in that described secondary case this The side of body is provided with metal sheet.

3. box type gas insulated metal sealing switchgear according to claim 2 is it is characterised in that described module circuitry Put and in chamber, be provided with double-layer wiring terminal；The levels wiring position of described binding post staggers the thickness of half terminal.

4. box type gas insulated metal sealing switchgear according to claim 2 is it is characterised in that also include handss/electricity Pneumatic operating mechanism, described handss/motor-operating mechanism adds air gauge.

5. box type gas insulated metal sealing switchgear according to claim 4 is it is characterised in that on described air gauge It is provided with alarm device.