CN213212710U - Cabinet door, electric cabinet box and switch cabinet - Google Patents

Abstract

The utility model relates to a cabinet door, electric cabinet case and cubical switchboard, include: the main guard board is provided with a fastening connecting part and is used for being assembled and fixed with the cabinet body through the fastening connecting part; the arc baffle plate is arranged on the inner side wall of the main guard plate; and the flame-retardant insulating plate is arranged on one side of the arc baffle, which is far away from the main guard plate. The main guard plate is provided with the fastening connection part, so that the main guard plate can be firmly assembled and fixed on the cabinet body through the fastening connection part, at the moment, arcing occurs in the closet, and the main guard plate cannot be washed off from the cabinet body and fall off under the impact of fault air flow; because install the arc board on the main backplate, install fire-retardant insulation board on the arc board for the bulk rigidity and the protective properties of cabinet door promote with great range, and the cabinet door can be fine resist the high temperature and the impact that the arcing produced, can prevent that main backplate from causing the breakdown, guarantees that the cabinet door possesses good security protection ability, eliminates potential safety hazard.

Description

Cabinet door, electric cabinet box and switch cabinet

Technical Field

The utility model relates to an electrical equipment technical field especially relates to a cabinet door, electric cabinet case and cubical switchboard.

Background

The switch cabinet is an electric device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch circuit is arranged according to the requirement. The main function of the switch gear is to open, close, control and protect electric equipment in the process of generating, transmitting, distributing and converting electric energy of an electric power system, and the electric equipment arranged in the switch gear mainly comprises a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. For example, a 10kV SF6 switchgear is a common, widely used medium voltage gas filled switchgear.

However, in the actual working process of such switch cabinets, if a cable head fails, an arcing phenomenon is very easy to occur, the pressure in the cabinet increases sharply, and because the rigidity of the existing cabinet door panel is generally poor, the existing cabinet door panel is easy to rush out from the cabinet body under the impact action of strong fault airflow, so that the life safety of operators is threatened, and even the arcing generated by the failure can directly puncture the cabinet door panel, so that the due safety protection requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a cabinet door, electric cabinet case and cubical switchboard, aims at solving prior art protective capacities weak, has the problem of potential safety hazard.

In one aspect, the present application provides a cabinet door, comprising:

the main guard board is provided with a fastening connecting part and is used for being assembled and fixed with the cabinet body through the fastening connecting part;

the arc baffle plate is arranged on the inner side wall of the main guard plate; and

the flame-retardant insulating plate is arranged on one side, away from the main guard plate, of the arc baffle.

The cabinet door application of the scheme is equipped on the electric cabinet box of the switch cabinet, and is used for enhancing the security protection capability of the electric cabinet box and avoiding personal injury to peripheral workers when an arcing phenomenon is generated in the box. Specifically, the fastening connection part is designed and manufactured on the main guard plate, so that the main guard plate can be firmly assembled and fixed on the cabinet body through the fastening connection part, at the moment, arcing occurs in the closet, and the main guard plate cannot be washed off from the cabinet body and fall off under the impact of fault airflow; in addition, because install the arc board on the main backplate, install fire-retardant insulation board on the arc board for the bulk rigidity and the barrier propterty of cabinet door promote with great range, and the cabinet door can be fine resist the high temperature and the impact that the arcing produced, can prevent that main backplate from causing the breakdown, guarantees that the cabinet door possesses good security protection ability, eliminates potential safety hazard.

The technical solution of the present application is further described below:

in one embodiment, the main guard plate comprises at least two metal separators, and the at least two metal separators are connected in a stacked manner.

In one embodiment, the fastening connection portion includes at least two mounting holes, and the at least two mounting holes are spaced apart from each other at an outer peripheral portion of the main guard plate.

In one embodiment, the main guard board is provided with an observation window; the cabinet door also comprises explosion-proof glass, and the explosion-proof glass is arranged in the observation window.

In one embodiment, the cabinet door further comprises a carrying handle, and the carrying handle is arranged on the outer side wall of the main guard board; the lower extreme of main backplate is equipped with the portion of keeping away the vacancy of slope, the lower limb of keeping away the vacancy is equipped with the picture peg in the arch.

In one embodiment, the cabinet door further comprises a reinforcing middle plate, and the reinforcing middle plate is arranged between the main protection plate and the arc blocking plate.

In one embodiment, the main guard board and the reinforcing middle board are both arranged in a concave structure, the main guard board is provided with a first connecting flange, the reinforcing middle board is provided with a second connecting flange, and the first connecting flange and the second connecting flange are welded and fixed.

In one embodiment, the arc baffle plate is arranged in a concave structure, and the arc baffle plate is provided with a third connecting flange which is welded and fixed with the first connecting flange.

On the other hand, this application still provides an electric cabinet case, its include the cabinet body and as above the cabinet door, the cabinet door set up in on the cabinet body.

In addition, this application still provides a cubical switchboard, and it includes electric cabinet box as above.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a switch cabinet according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the cabinet door shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a partially enlarged structural view at B in fig. 3.

Description of reference numerals:

10. a main guard plate; 11. a fastening connection portion; 111. mounting holes; 12. an observation window; 13. an evacuation section; 14. inserting plates; 15. a first connecting flange; 20. a cabinet body; 30. an arc baffle; 31. third connecting flanging; 40. a flame retardant insulation board; 50. explosion-proof glass; 60. a carrying handle; 70. reinforcing the middle plate; 71. a second connecting flange; 100. a cabinet door; 200. provided is a switch cabinet.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1, a switch cabinet 200 according to an embodiment of the present disclosure is provided, where the switch cabinet 200 mainly functions to open and close a circuit, control the circuit, and protect electrical equipment during power generation, power transmission, power distribution, and electric energy conversion of an electrical power system.

Generally, the electrical equipment installed in the switchgear 200 mainly includes a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a transformer, various protection devices, and the like. The switch cabinets 200 can be classified into a movable switch cabinet and a fixed switch cabinet by a circuit breaker mounting method; or according to the structure difference of the cabinet body 20, the cabinet can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades. The switch provided by the embodiment specifically refers to a medium-voltage inflatable switch cabinet 200, which is widely applied to various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textiles, industrial and mining enterprises, residential districts, high-rise buildings and the like.

Referring to fig. 1, the switch cabinet 200 includes an electric cabinet and various electrical devices (such as circuit breakers, disconnectors, etc.) installed in the electric cabinet. The electric cabinet includes a cabinet body 20 and a cabinet door 100. The cabinet body 20 can be in a cube, a trapezoid body, a cylinder and other structures, the main body part is formed by welding or splicing high-strength stainless steel plates, and the cabinet has excellent fireproof, antitheft, dustproof, antirust, rat-proof, heat-insulating and other capabilities, so that the service life and reliability of the switch cabinet 200 in outdoor and other complex harsh working environments are prolonged.

In the present embodiment, the cabinet 20 is preferably in a cubic shape. An entrance is formed in one side surface of the cabinet body 20, and the cabinet door 100 is installed on the cabinet body 20 and can open or close the entrance, so that a worker can conveniently enter and exit the switch cabinet 200 to perform maintenance operation.

Referring to fig. 1, in some situations with large electrical loads, when a single switch cabinet 200 cannot support the requirement of electrical control, at least two or more (including three or more) switch cabinets 200 may be arranged side by side to form a switch cabinet assembly, so that different switch cabinets 200 may respectively and specifically serve a specific electrical facility.

With continued reference to fig. 2 and 4, in some embodiments, the cabinet door 100 includes: the main guard board 10, the arc baffle 30 and the flame retardant insulation board 40. The main guard board 10 is provided with a fastening connection part 11, and the main guard board 10 is used for being assembled and fixed with the cabinet body 20 through the fastening connection part 11; the arc baffle 30 is arranged on the inner side wall of the main guard plate 10; the flame-retardant insulating plate 40 is disposed on a side of the arc baffle 30 away from the main fender 10.

The cabinet door 100 of the above scheme is applied to an electric cabinet box of the switch cabinet 200, and is used for enhancing the security protection capability of the electric cabinet box and avoiding personal injury to peripheral workers when an arcing phenomenon is generated in the box. Specifically, the fastening connection part 11 is designed and manufactured on the main guard board 10, so that the main guard board 10 can be firmly assembled and fixed on the cabinet body 20 through the fastening connection part 11, at this time, arcing occurs in the box, and the main guard board 10 cannot be washed off from the cabinet body 20 and fall off even being impacted by fault airflow; in addition, because the arc baffle 30 is installed on the main backplate 10, install fire-retardant insulation board 40 on the arc baffle 30 for the bulk rigidity and the barrier propterty of cabinet door 100 promote by a relatively large margin, and the cabinet door 100 can be fine resist the high temperature and the impact that the arcing produced, can prevent that main backplate 10 from causing the puncture, guarantee that cabinet door 100 possesses good security protection ability, eliminate potential safety hazard.

In the above embodiment, the main guard plate 10 is an integral plate supported by a metal material, and has good rigidity, high structural strength, excellent durability and excellent arc resistance. Further, the main guard plate 10 includes at least two metal separators, and at least two metal separators are stacked and connected. This further improves the structural strength and rigidity of the main fender 10. Preferably, the main guard 10 includes three metal partitions, which are iron plates. Easy to obtain and low in manufacturing cost.

Of course, it should be noted that in other embodiments, the main fender 10 may be made of other materials. It can also be assembled by a plurality of unit plates.

The arc baffle 30 is made of stainless steel, alloy steel, cast iron and other materials with high rigidity and high rigidity, and is used for resisting high temperature and high pressure generated by arcing and improving the protection grade of the main guard plate 10.

The flame-retardant insulating plate 40 is made of a material with excellent flame-retardant and insulating properties, such as PVC, PTT fiber, silicate, asbestos, etc., and can effectively prevent electric arc from overflowing to cause electric shock to workers.

Referring to fig. 2, in order to maintain the electrical equipment in the switch cabinet 200 regularly, the cabinet door 100 is required to be installed in an openable manner. For example, the cabinet door 100 may be rotatably mounted on the cabinet body 20 by a hinge, and may be opened or closed by a rotating manner; alternatively, the cabinet door 100 is slidably mounted on the cabinet body 20 along a sliding rail module linear or arc path to perform opening or closing operations. In the present embodiment, the fastening portion 11 includes at least two mounting holes 111, and the at least two mounting holes 111 are spaced apart from each other at the outer peripheral edge of the main fender 10, in order to reduce the cost and facilitate the mounting and dismounting operation.

So, when cabinet door 100 installs, can with the mounting hole 111 direct aim at the last predetermined erection column of the cabinet body 20, promote cabinet door 100 and paste cabinet body 20 tightly, the erection column inserts in mounting hole 111, can be fast and firm fixed cabinet door 100 of installation. Preferably, in this embodiment, the cabinet door 100 is rectangular, the number of the mounting holes 111 is six, and the mounting holes 111 are arranged in two rows, wherein one row of three mounting holes 111 are arranged at the vertical edge of one side of the cabinet door 100 at intervals, and the other row of three mounting holes 111 are arranged at the vertical edge of the other side of the cabinet door 100 at intervals, so that the cabinet door 100 and the cabinet body 20 can be assembled firmly, the connection strength of the cabinet door 100 is high, and the cabinet door 100 is not easily washed away from the cabinet body 20 by the impact of the fault airflow.

With continued reference to fig. 2 and fig. 3, based on the above embodiment, the cabinet door 100 further includes a handle 60, and the handle 60 is disposed on an outer side wall of the main fender 10; the lower end of the main guard plate 10 is provided with an inclined space-avoiding portion 13, and the lower edge of the space-avoiding portion 13 is convexly provided with an inserting plate 14.

The bottom of the cabinet body 20 is still designed and manufactured with the slot, and when installing cabinet door 100, the staff grips the carrying handle 60 and lifts cabinet door 100, and during the adjustment cabinet door 100 position made the picture peg 14 insert the slot after aiming at the slot, with the help of the cooperation of picture peg 14 and slot grafting, the bottom of fixed cabinet door 100 that can be fine, deformation appears in cabinet door 100 bottom when preventing to receive trouble airflow and assaulting, and then with the cabinet body within a definite time produce the gap and cause the arcing to leak. Then, the inserting plate 14 and the inserting groove are taken as pivots, the cabinet door 100 is pushed to rotate to be close to the cabinet body 20, and the mounting hole 111 can be directly inserted and sleeved on the mounting column, so that the mounting operation of the cabinet door 100 is completed. When the cabinet door 100 needs to be opened, the cabinet door 100 is pulled backwards to rotate, so that the mounting column is separated from the mounting hole 111, then the carrying handle 60 is pulled upwards to plug and draw out from the slot, and the cabinet door 100 can be integrally taken down.

In addition, the lower end of the main guard plate 10 is designed to be the inclined clearance 13, so that the foot of the worker is prevented from being blocked and interfered, and the worker can get close to the cabinet body to complete the operation conveniently.

With reference to fig. 2 and fig. 3, in addition, on the basis of any of the above embodiments, the main fender 10 is provided with an observation window 12. When the switch cabinet 200 works, working conditions in the cabinet can be observed by workers outside conveniently, and potential safety hazards can be found and eliminated in time.

Further, the cabinet door 100 further includes an explosion-proof glass 50, and the explosion-proof glass 50 is disposed in the observation window 12. The observation window 12 is covered by the explosion-proof glass 50, and under the condition that normal observation is not influenced, the explosion-proof glass 50 can effectively prevent air flow and electric arc generated by the electric arc in the cabinet from overflowing out of the cabinet, so that the injury to workers is avoided. And the explosion-proof glass 50 has extremely high structural strength, even if the explosion-proof glass is impacted by fault airflow and baked at high temperature, the explosion can not occur, and the safety protection level of the switch cabinet 200 can be improved.

With reference to fig. 4, on the basis of any of the above embodiments, the cabinet door 100 further includes a reinforcing middle plate 70, and the reinforcing middle plate 70 is disposed between the main protection plate 10 and the arc blocking plate 30. By adding the reinforcing middle plate 70, the overall structural rigidity and strength of the cabinet door 100 can be further enhanced.

It should be noted that, in order to avoid shielding the observation window 12 and affecting the condition of the staff observing the inside of the cabinet from the outside, the reinforcing middle plate 70, the flame-retardant insulation plate 40 and the arc baffle 30 are all provided with hollow parts, and the hollow parts are opposite to the observation window 12, and meanwhile, the size of the hollow parts is not smaller than that of the observation window 12, so as to avoid the above problems.

With reference to fig. 4, in some embodiments, the main fender 10 and the reinforcing middle plate 70 are configured as a concave structure, the main fender 10 is provided with a first connecting flange 15, the reinforcing middle plate 70 is provided with a second connecting flange 71, and the first connecting flange 15 and the second connecting flange 71 are welded and fixed. The main guard plate 10 and the reinforcing middle plate 70 are both arranged to be of a concave structure, so that the fit degree of the main guard plate 10 and the reinforcing middle plate 70 during assembly is high, the structure compactness is good, the assembly gap between the first connecting flanging 15 and the second connecting flanging 71 can be eliminated, the first connecting flanging 15 and the second connecting flanging 71 are connected through a welding process, the main guard plate 10 and the reinforcing middle plate 70 can be firmly and reliably connected, and the overall strength and the rigidity of the cabinet door 100 are improved.

Further, the arc baffle 30 is of a concave structure, the arc baffle 30 is provided with a third connecting flange 31, and the third connecting flange 31 is welded and fixed with the first connecting flange 15. The main guard plate 10 and the arc baffle plate 30 are both arranged in a concave structure, so that the fit degree of the main guard plate 10 and the arc baffle plate 30 during assembly is high, the structure is compact, the assembly gap between the first connecting flanging 15 and the third connecting flanging 31 can be eliminated, the first connecting flanging 15 and the third connecting flanging 31 are connected by adopting a welding process, the main guard plate 10 and the arc baffle plate 30 can be firmly and reliably connected, and the overall strength and the rigidity of the cabinet door 100 are improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A cabinet door, characterized in that the cabinet door comprises:

the main guard board is provided with a fastening connecting part and is used for being assembled and fixed with the cabinet body through the fastening connecting part;

the arc baffle plate is arranged on the inner side wall of the main guard plate; and

the flame-retardant insulating plate is arranged on one side, away from the main guard plate, of the arc baffle.

2. The cabinet door of claim 1, wherein the main guard plate comprises at least two metal partitions, and the at least two metal partitions are connected in a stacked manner.

3. The cabinet door according to claim 1, wherein the fastening connection portion includes at least two mounting holes, and at least two mounting holes are spaced apart from each other at an outer peripheral portion of the main guard plate.

4. The cabinet door of claim 1, wherein the main guard plate is provided with an observation window; the cabinet door also comprises explosion-proof glass, and the explosion-proof glass is arranged in the observation window.

5. The cabinet door of claim 1, further comprising a handle disposed on an exterior sidewall of the main fascia; the lower extreme of main backplate is equipped with the portion of keeping away the vacancy of slope, the lower limb of keeping away the vacancy is equipped with the picture peg in the arch.

6. The cabinet door according to any one of claims 1 to 5, further comprising a reinforcing middle plate disposed between the main guard plate and the arc baffle plate.

7. The cabinet door according to claim 6, wherein the main guard plate and the reinforcing middle plate are both configured as a concave structure, and the main guard plate is provided with a first connecting flange, and the reinforcing middle plate is provided with a second connecting flange, and the first connecting flange and the second connecting flange are welded and fixed.

8. The cabinet door according to claim 7, wherein the arc baffle is configured as a concave structure, and the arc baffle is provided with a third connecting flange, and the third connecting flange is welded and fixed with the first connecting flange.

9. An electrical cabinet comprising a cabinet body and a cabinet door as claimed in any one of claims 1 to 8, the cabinet door being disposed on the cabinet body.

10. A switchgear cabinet, characterized in that it comprises an electric cabinet as claimed in claim 9.

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