High-altitude armored removable alternating-current metal-enclosed switchgear

Abstract

The invention discloses a high-altitude armored movable alternating-current metal-enclosed switchgear, which comprises a switchgear main body, a side plate is arranged on the switchgear main body, a plurality of main sleeves are fixedly arranged on the side plate, sleeve holes are formed in the main sleeves, busbars penetrating out of the switchgear main body are arranged in the sleeve holes, and the busbars are arranged in the busbar holes. Each main casing pipe is connected with a flat pressing casing pipe in a sealed mode, a flat pressing cavity is formed in each flat pressing casing pipe, a first flat pressing plate and a second flat pressing plate which are elastically connected with each other are movably arranged in each flat pressing cavity, the first flat pressing plates make contact with the outside, and the second flat pressing plates make contact with casing pipe holes. The busbar penetrates through the first flat pressing plate and the second flat pressing plate. The device has the beneficial effects that when the device is applied to regions with different altitudes, the first flat pressing plate and the second flat pressing plate are driven by external air pressure and internal air pressure of equipment respectively, elastically move towards each other and finally reach a balance state, so that the internal and external pressure of the sleeve is balanced, and the device is more stable and reliable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of switch devices, and particularly relates to a high-altitude armored movable AC metal-enclosed switch device. BACKGROUND

[0002] The armored movable AC metal-enclosed switch device is a kind of high-voltage electrical equipment, which is mainly used for controlling, protecting and distributing electric energy in the power system. It has good safety and maintainability, and is often used in power supply scenes such as large industrial areas, commercial centers, urban residential areas and the like which need large-scale power grid security guarantee and defense system and intelligent dispatching system.

[0003] In actual use, the armored movable AC metal-enclosed switch device is often applied in high-altitude areas. Compared with low-altitude areas, the main feature of high-altitude areas is that the atmospheric pressure is low and changes significantly with height. Since the switch device has a certain degree of closure, an air pressure value will also be generated inside the switch device, which is related to the production of the switch device and the altitude passed during transportation.

[0004] However, due to the actual production cost, most of the existing switch devices are produced and assembled in low-altitude areas and then transported to high-altitude areas of different altitudes for use, which results in a significant air pressure difference between the switch device and the outside world and between different switch devices when used in high-altitude areas. This air pressure difference will be respectively applied to both sides of the sleeve of the switch device when the switch device is used alone or multiple, which affects the stability and reliability of the sleeve in the long-term use. SUMMARY

[0005] For the existing armored movable AC metal-enclosed switch device, when used in high-altitude areas, there is an air pressure difference between the switch device and the outside world and between different switch devices, which causes the pressure on both sides of the sleeve to be different, affecting the stability and reliability of the sleeve. To solve the above problems, the following invention is proposed: A high-altitude armored movable AC metal-enclosed switch device, comprising a device main body, a side plate is arranged on the device main body, a plurality of main sleeves are fixedly installed on the side plate, a sleeve hole is arranged on the main sleeve, a busbar is arranged in the sleeve hole and extends out of the device main body, a flat pressure sleeve is sealingly connected to each main sleeve, a flat pressure cavity is arranged on the flat pressure sleeve, a first flat pressure plate and a second flat pressure plate which are elastically connected to each other are movably arranged in the flat pressure cavity, the first flat pressure plate is in contact with the outside world, the second flat pressure plate is in contact with the sleeve hole, and the busbar penetrates the first flat pressure plate and the second flat pressure plate.

[0006] Further, the first sealing sleeve and the second sealing sleeve are provided with inner sealing sleeves which are inserted into the pressing cavity, and the two inner sealing sleeves are respectively arranged at the openings on the two sides of the pressing cavity to prevent the first pressing plate and the second pressing plate from being separated from the pressing cavity.

[0007] Further, the first sealing sleeve and the second sealing sleeve are provided with inner sealing sleeves which are inserted into the pressing cavity, and the two inner sealing sleeves are respectively arranged at the openings on the two sides of the pressing cavity to prevent the first pressing plate and the second pressing plate from being separated from the pressing cavity.

[0008] Further, the first pressing plate and the second pressing plate are provided with spring grooves which extend towards each other, and the pressing spring which is connected to the first pressing plate and the second pressing plate is inserted into the spring grooves.

[0009] Further, the pressing sleeve is provided with a guide block which is arranged in the pressing cavity, and the first pressing plate and the second pressing plate are provided with guide grooves which are matched with the guide block.

[0010] Further, the guide block is provided with fixing holes on the two sides, and the first sealing sleeve and the second sealing sleeve are provided with fixing members which are screwed into the fixing holes to prevent the first sealing sleeve and the second sealing sleeve from being separated from the pressing sleeve.

[0011] The high-altitude armored movable AC metal-enclosed switchgear has the beneficial effects that when the external air pressure and the internal air pressure of the equipment are different, the first pressing plate and the second pressing plate are respectively pushed by the air pressure and elastically move towards each other until the air pressure in the pressing cavity and the air pressure in the sleeve hole are balanced, thereby solving the problem of the stability decrease of the sleeve due to the unbalanced force on the two sides. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a schematic diagram of the three-dimensional structure of the present application; Fig. 2 It is a schematic diagram of the three-dimensional structure of the main sleeve and the pressing sleeve in the present application; Fig. 3 It is a schematic diagram of the split structure of the main sleeve and the pressing sleeve in the present application.

[0013] The corresponding relationship between the annotations of the figures and the component names in the figures is as follows: 1, device main body; 2, main sleeve; 3, flat pressing sleeve; 4, flat pressing cavity; 5, fixing hole; 11, side plate; 12, busbar; 21, sleeve hole; 22, strip-shaped jack; 31, first sealing sleeve; 32, second sealing sleeve; 33, first flat pressing plate; 34, second flat pressing plate; 35, flat pressing spring; 36, spring groove; 37, outer sealing sleeve; 38, inner sealing sleeve; 41, guide block; 42, guide groove; 51, fixing piece. DETAILED DESCRIPTION

[0014] The technical solutions of the present application will be described clearly and completely below in combination with embodiments.

[0015] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present application.

[0016] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application herein.

[0017] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0018] In addition to indicating the orientation or positional relationship, some of the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific circumstances.

[0019] As Figs. 1-3As shown, it is a preferred embodiment of the application, a high-altitude armored movable AC metal-enclosed switchgear, comprising a device body 1, each of the left and right sides of the device body 1 is provided with a side plate 11, and a busbar 12 is arranged inside the side plate 11 between the two side plates 11, wherein at least one side plate 11 is fixedly installed with a plurality of vertically arranged main sleeves 2, the main sleeve 2 is provided with a sleeve hole 21, and a strip-shaped jack 22 is arranged in the sleeve hole 21 for the busbar 12 to pass out of the device body 1, a flat compression sleeve 3 is sealingly installed at the opening of the sleeve hole 21 of each main sleeve 2, each flat compression sleeve 3 is provided with a flat compression cavity 4, and a first flat compression plate 33 and a second flat compression plate 34 are movably arranged in the flat compression cavity 4, wherein the first flat compression plate 33 is in contact with the outside, and the second flat compression plate 34 is in contact with the sleeve hole 21, and similarly, the first flat compression plate 33 and the second flat compression plate 34 are also provided with strip-shaped jacks 22 for the busbar 12 to pass through.

[0020] Further, the flat compression sleeve 3 is provided with a first sealing sleeve 31 close to the first flat compression plate 33 at one end, and a second sealing sleeve 32 close to the second flat compression plate 34 at the other end, the outer side of the first sealing sleeve 31 and the second sealing sleeve 32 is provided with an outer sealing sleeve 37, the second sealing sleeve 32 is connected to the main sleeve 2 through the outer sealing sleeve 37 to sealingly connect the flat compression sleeve 3 and the main sleeve 2, and in actual use, the sealing connection means is usually sealing glue; further, the inner side of the first sealing sleeve 31 and the second sealing sleeve 32 is also provided with an inner sealing sleeve 38 inserted into the flat compression cavity 4, and the two inner sealing sleeves 38 are respectively blocked at the openings on both sides of the flat compression cavity 4 to prevent the first flat compression plate 33 and the second flat compression plate 34 from separating from the flat compression cavity 4.

[0021] In actual use, after the flat compression sleeve 3 is completely sealingly connected to the main sleeve 2, the external pressure is directly applied to the first flat compression plate 33, causing it to elastically move towards the second flat compression plate 34, and the pressure inside the device body 1 is directly applied to the second flat compression plate 34, causing it to elastically move towards the first flat compression plate 33, so that the two finally move towards each other until the elastic force on both sides of the first flat compression plate 33 and the external pressure, and the elastic force on both sides of the second flat compression plate 34 and the internal pressure of the device body 1 are balanced, and they no longer move relative to each other, and after that, the pressure in the flat compression cavity 4 and the sleeve hole 21 also reaches a balance.

[0022] Specifically, when there is a large difference between the external air pressure and the internal air pressure of the main body 1 of the equipment, taking the case where the internal air pressure of the main body 1 is larger, the larger internal air pressure will drive the second flat pressure plate 34 to move, and generate an elastic force greater than the external air pressure between it and the first flat pressure plate 33. This will continuously push the first flat pressure plate 33 to move along the flat pressure chamber 4 towards the outside until it is blocked by the inner sealing sleeve 38 of the first sealing sleeve 31 and can no longer move. In this situation, since the pressure balance between the flat pressure chamber 4 and the sleeve hole 21 has not been achieved, the flat pressure sleeve 3 still needs to be replaced periodically.

[0023] In practical use, it is often necessary to connect the 12 phases of different switchgear busbars to form a large-scale power grid system. In this case, the first sealing sleeve 31 and the second sealing sleeve 32 can be sealed to the main bushings 2 phases of the two switchgear respectively. When the internal air pressure between the two switchgear is different, the first flat pressure plate 33 and the second flat pressure plate 34 will move towards each other to achieve a balanced state, which is beneficial to improving the stability of the connection between different switchgear and preventing the busbar 12 from contacting the outside.

[0024] Furthermore, such as Fig. 3 As shown, the first flat pressure plate 33 and the second flat pressure plate 34 are provided with spring grooves 36 extending toward each other. A flat pressure spring 35 that elastically connects the first flat pressure plate 33 and the second flat pressure plate 34 is inserted into the spring groove 36. When the first flat pressure plate 33 or the second flat pressure plate 34 is driven by air pressure, the flat pressure spring 35 contracts.

[0025] In this embodiment, the flat pressure sleeve 3 is also provided with a guide block 41 located in the flat pressure chamber 4. The first flat pressure plate 33 and the second flat pressure plate 34 are both provided with guide grooves 42 that cooperate with the guide block 41. During the movement of the first flat pressure plate 33 and the second flat pressure plate 34 in the flat pressure chamber 4, the guide grooves 42 will slide along the guide block 41. Furthermore, the guide block 41 is provided with fixing holes 5 on both sides. The first sealing sleeve 31 and the second sealing sleeve 32 are provided with fixing members 51 that are threaded into the fixing holes 5 to prevent the first sealing sleeve 31 and the second sealing sleeve 32 from detaching from the flat pressure sleeve 3.

[0026] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-altitude armored removable AC metal-enclosed switchgear, comprising a main body (1), wherein a side plate (11) is provided on the main body (1), and a plurality of main bushings (2) are fixedly installed on the side plate (11), wherein the main bushings (2) are provided with bushing holes (21), and a busbar (12) extending outward from the main body (1) is provided in the bushing holes (21), characterized in that: Each main sleeve (2) is sealingly connected with a flat compression sleeve (3), a flat compression chamber (4) is arranged on the flat compression sleeve (3), the first flat compression plate (33) and the second flat compression plate (34) are movably arranged in the flat compression chamber (4) and are elastically connected with each other, the first flat compression plate (33) is in contact with the outside, the second flat compression plate (34) is in contact with the sleeve hole (21), and the busbar (12) penetrates the first flat compression plate (33) and the second flat compression plate (34).

2. The high altitude metal clad metal-enclosed switchgear of claim 1, wherein: One end of the flat compression sleeve (3) is provided with the first sealing sleeve (31) close to the first flat compression plate (33), the other end is provided with the second sealing sleeve (32) close to the second flat compression plate (34), the outer side of the first sealing sleeve (31) and the second sealing sleeve (32) is provided with the outer sealing sleeve (37), the second sealing sleeve (32) is connected to the main sleeve (2) through the outer sealing sleeve (37), so as to sealingly connect the flat compression sleeve (3) and the main sleeve (2).

3. The high altitude metal clad metal-enclosed switchgear of claim 2, wherein: The inner side of the first sealing sleeve (31) and the second sealing sleeve (32) is also provided with the inner sealing sleeve (38) inserted into the flat compression chamber (4), and the two inner sealing sleeves (38) are respectively arranged at the openings on both sides of the flat compression chamber (4), so as to prevent the first flat compression plate (33) and the second flat compression plate (34) from being separated from the flat compression chamber (4).

4. The high altitude metal-clad metal-enclosed switchgear of claim 3, wherein: The first flat compression plate (33) and the second flat compression plate (34) are provided with spring grooves (36) extending towards each other, and the flat compression spring (35) elastically connecting the first flat compression plate (33) and the second flat compression plate (34) is inserted into the spring grooves (36).

5. The high altitude metal-clad metal-enclosed switchgear of claim 4, wherein: The flat compression sleeve (3) is also provided with a guide block (41) in the flat compression chamber (4), and the first flat compression plate (33) and the second flat compression plate (34) are provided with guide grooves (42) matched with the guide block (41).

6. The high altitude metal-clad metal-enclosed switchgear of claim 5, wherein: The guide block (41) is provided with a fixing hole (5) on both sides, and the first sealing sleeve (31) and the second sealing sleeve (32) are provided with a fixing member (51) screwed into the fixing hole (5).

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