阅读说明：本技术 一种带有内置式侧壁防水结构的多功能低压配电箱 (Multi-functional low voltage distribution box with built-in lateral wall waterproof construction ) 是由 张华旭 随向前 李文喆 周罗鹏 王安 高玉超 白冰洋 冯铎 朱海洋 冯建海 于 2020-07-20 设计创作，主要内容包括：本发明公开一种带有内置式侧壁防水结构的多功能低压配电箱,包括柜体,柜体呈长方体结构,柜体包括侧壁、设置在侧壁上部的顶板和设置在侧壁下部的底板,侧壁上设置有进气窗,所述进气窗由多根外肋板组成,在两个相邻外肋板之间间隙形成外透气孔,外透气孔的上沿向外延伸形成弧形结构防水沿；所述进气窗内侧安装有防水板,防水板包括第一侧板和第二侧板,第二侧板设置有两块并分别垂直设置于第一侧板对应的两侧,第二侧板的外端部向外翻折以形成固定板,第一侧板上开设有透气栅栏,本装置具有适合户外型配电柜体,防雨性能好,在柜体的侧壁进气窗对应安装有防水部件,防雨、防尘和散热效果较佳。(The invention discloses a multifunctional low-voltage distribution box with a built-in side wall waterproof structure, which comprises a cabinet body, wherein the cabinet body is of a cuboid structure and comprises side walls, a top plate arranged at the upper part of each side wall and a bottom plate arranged at the lower part of each side wall, an air inlet window is arranged on each side wall and consists of a plurality of outer rib plates, an outer air through hole is formed in a gap between every two adjacent outer rib plates, and the upper edge of each outer air through hole extends outwards to form an arc-shaped structure waterproof edge; waterproof board is installed to the window inboard of admitting air, and the waterproof board includes first curb plate and second curb plate, and the second curb plate is provided with two and sets up perpendicularly respectively in the both sides that first curb plate corresponds, and the outer tip of second curb plate is outwards turned over and is turned over in order to form the fixed plate, has seted up ventilative fence on the first curb plate, and this device has and is fit for outdoor type distribution cabinet body, and rain-proof performance is good, and the lateral wall window of admitting air at the cabinet body corresponds installs waterproof part, rain-proof, dustproof and radiating effect preferred.)

1. The utility model provides a multi-functional low voltage distribution box with built-in lateral wall waterproof construction, includes the cabinet body (1), its characterized in that: the cabinet body (1) is of a cuboid structure, the cabinet body (1) comprises a side wall (1-1), a top plate (1-2) arranged at the upper part of the side wall (1-1) and a bottom plate (1-3) arranged at the lower part of the side wall (1-1), an air inlet window (2) is arranged on the side wall (1-1), the air inlet window (2) consists of a plurality of outer rib plates, an outer air through hole is formed in a gap between two adjacent outer rib plates, and the upper edge of the outer air through hole extends outwards to form an arc-shaped structure waterproof edge (2-1);

The air inlet window is characterized in that waterproof plates (3) are mounted on the inner side of the air inlet window (2), each waterproof plate (3) comprises a first side plate (3-1) and a second side plate (3-2), the second side plate (3-2) is provided with two blocks which are vertically arranged on two corresponding sides of the first side plate (3-1) respectively, the outer end portion of the second side plate (3-2) is turned outwards to form a fixed plate, a ventilating fence is arranged on the first side plate (3-1) and consists of a plurality of inner rib plates, inner air holes are formed in gaps between the two adjacent inner rib plates, arc-shaped air channel plates (311) are formed in the upper edges of the inner air holes in an extending mode, the arc-shaped air channel plates (311) extend in the opposite direction of the second side plate (3-2), and the inner air holes and;

a supporting edge (111) is formed by extending the lower edge of the side wall (1-1) into the cabinet body (1), the bottom plate (1-3) is buckled on the supporting edge (111), the bottom plate (1-3) is higher than the supporting edge (111) so as to form a drainage channel between the edge of the bottom plate (1-3) and the side wall (1-1), and a drainage hole (131) is formed at the side of the drainage channel close to the edge of the bottom plate (1-3); the drainage channel is positioned under the waterproof plate (3).

2. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 1, wherein: the inside of the cabinet body (1) is separated for a plurality of mutually independent spaces by ceramic insulation baffle (7), the laminating of ceramic insulation baffle (7) is installed on mount (8), and the stiff end of mount (8) is installed on cabinet body (1) inner wall the inboard correspondence of mount (8) is formed with the installing frame that is used for installing ceramic insulation baffle (7).

3. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 1, wherein: the bottom plate (1-3) is provided with heat dissipation holes (132), and the upper end faces of the heat dissipation holes (132) are provided with more than one layer of dust screens in an attaching mode; the inner side wall of the air inlet window (2) is provided with more than one layer of dust screen in an attaching mode.

4. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 1, wherein: the roof (1-2) is buckled above the side wall (1-1), the edge of the roof (1-2) extends outwards to form a rain-proof eave (121), the outer edge of the rain-proof eave (121) is turned downwards to form an outer side gap, an inner sealing plate (122) is arranged on the inner side, located on the side wall (1-1), of the roof (1-2), an inner side gap is formed between the inner sealing plate (122) and the side wall (1-1), the outer side gap and the inner side gap are communicated through the side wall (1-1), and a plurality of air holes are formed in the bottom air permeable plates of the outer side gap and the inner side gap.

5. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 1, wherein: the side wall (1-1) near the bottom is provided with a heat radiation fan (4) to discharge high-temperature gas in the cabinet body (1).

6. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 3, wherein: the dust screen is made of a stainless steel wire mesh, and the aperture of the stainless steel wire mesh is smaller than 1 mm.

7. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 2, wherein: the ceramic insulation partition board (7) is sequentially arranged and comprises a ceramic board layer (7-1), a flame retardant material layer (7-2) and a hard material layer (7-3), the flame retardant material layer (7-2) is attached to two sides of the ceramic board layer (7-1), and the hard material layer (7-3) is installed on the outer side of the flame retardant material layer (7-2).

8. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 7, wherein: a plurality of first grooves and a plurality of second grooves are formed in two side faces of the ceramic plate layer (7-1), the first grooves and the second grooves are vertically arranged in a staggered mode, and the first grooves and the second grooves penetrate through the end face of the whole ceramic plate layer (7-1).

9. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 7, wherein: grid-shaped convex stripes are formed on the inner end face of each hard material layer (7-3), and the internal structure is compressed between the two hard material layers (7-3) through connecting pieces (7-4).

10. The multifunctional low-voltage distribution box with the built-in side wall waterproof structure as claimed in claim 7, wherein: after the ceramic insulating partition plate (7) is arranged on the fixed frame (8), the hard material layer (7-3) is positioned on the outer surface side; the preparation of the ceramic insulating partition board (7) comprises the steps of preparing a ceramic board layer (7-1), preparing a hard material layer (7-3) and combining;

preparing a ceramic plate layer (7-1): the ceramic plate layer (7-1) comprises a blank body and a glaze layer, (1) a blank body manufacturing step, wherein the ceramic blank body is pressed through a die to form a cake-shaped structure, grooves (711) which are criss-cross are formed on two sides of the inner surface of the ceramic blank body, the depth of each groove (711) is 5-6mm, a notch is formed in the edge of the ceramic plate layer (7-1), vacuum drying is adopted, and firing is carried out at 165-180 ℃ to obtain the ceramic plate layer blank body; (2) dipping glaze on the surfaces of two sides of the ceramic plate layer blank body to ensure that the depth of the groove (711) is 3-4mm, adopting vacuum drying, and sending the groove into a furnace for firing to obtain a ceramic plate layer (7-1);

preparing a hard material layer (7-3): punching metal material to form a plate-shaped structure, punching a plurality of small holes on the peripheral edge of the hard material layer (7-3) to form a raised flanging on one side of the hard material layer (7-3), grid-shaped convex stripes (731) are formed on the inner end surface of the hard material layer (7-3), embossing grooves which are transversely arranged are formed along the convex stripes (731), the depth of each embossing groove is 0.5-1mm, a plurality of distance posts (732) are arranged at the inner side edge of the hard material layer (7-3), an insulating cap is sleeved on the end part of the distance post (732), the position of the distance post (732) is arranged corresponding to the gap of the ceramic plate layer (7-1), a flame retardant material layer (7-2) is laid on the inner end face of the hard material layer (7-3), and the edge of the flame retardant material layer (7-2) is arranged on the inner side of the distance column (732);

The combination step is as follows: the ceramic plate layer (7-1) is placed on the inner side of the group of hard material layers (7-3), the opening of the ceramic plate layer (7-1) is clamped at the position of the distance column (732), and the connecting piece (7-4) sequentially penetrates through screw holes of the two hard material layers (7-3) to be fixed and clamped, so that the ceramic insulating partition plate (7) is obtained.

Technical Field

The invention belongs to the technical field of distribution boxes, and particularly relates to a multifunctional low-voltage distribution box with a built-in side wall waterproof structure.

Background

The distribution box is a low-voltage distribution device formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement.

The IP protection grade is composed of two numbers, the 1 st number represents the solid protection grade and the grade for preventing the invasion of dust and other foreign matters, the 2 nd number represents the liquid protection grade and the tightness for preventing moisture and water invasion, the larger the number is, the higher the protection grade is, and the IP44 protection grade distribution box is mainly used for feeding, controlling, metering and protecting the 380V low-voltage side of the rural three-phase distribution transformer. The existing rural distribution transformer has the following problems: the outdoor rural power grid distribution box runs outdoors due to the working environment, and is often subjected to direct sunlight to generate high temperature, and particularly in summer high-temperature seasons, the air temperature in the box body reaches over 50 ℃; along with the increase of the power load, heavy load and even overload operation of a plurality of transformers and a comprehensive distribution box cause serious heating of electrical components, the service life of the electrical components is influenced, and the electrical components in the distribution box are accelerated to age and have high failure rate; secondly, the rainproof effect of the box body is not very ideal, water is easy to splash and drip into the box body when severe weather such as strong wind, strong rain and the like occurs, the safe operation of electrical components is seriously influenced, and the distribution box with the existing structure is not beneficial to rainwater discharge; once rainwater is gathered and reserved, the phenomenon that internal electric facilities are affected with damp can be caused, the normal work of the internal electric facilities is affected, and short circuit is caused, so that public electric appliances in the range cannot be normally used. And thirdly, if the condensation phenomenon can be generated on the electrical elements in the box body when the temperature difference between day and night is large, the electrical elements are easily burnt due to overhigh humidity in the box body.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a multifunctional low-voltage distribution box with a built-in side wall waterproof structure.

In order to achieve the purpose, the invention adopts the following technical scheme: a multifunctional low-voltage distribution box with a built-in side wall waterproof structure comprises a cabinet body, wherein the cabinet body is of a cuboid structure and comprises side walls, a top plate and a bottom plate, the top plate is arranged on the upper portion of each side wall, the bottom plate is arranged on the lower portion of each side wall, an air inlet window is arranged on each side wall and consists of a plurality of outer rib plates, an outer air through hole is formed in a gap between every two adjacent outer rib plates, and the upper edge of each outer air through hole extends outwards to form an arc-shaped structure waterproof;

the air inlet window is characterized in that waterproof plates are mounted on the inner sides of the air inlet windows and comprise a first side plate and a second side plate, the second side plate is provided with two blocks and is vertically arranged on two corresponding sides of the first side plate respectively, the outer end portion of the second side plate is turned outwards to form a fixed plate, a breathable fence is arranged on the first side plate and consists of a plurality of inner rib plates, inner air holes are formed in gaps between two adjacent inner rib plates, an arc-shaped air channel plate is formed by extending the upper edges of the inner air holes and extends towards the opposite direction of the second side plate, and the inner air holes and the outer air holes are arranged in a staggered mode;

The lower edge of the side wall extends inwards to form a supporting edge, the bottom plate is buckled on the supporting edge and is higher than the supporting edge so as to form a drainage channel between the edge of the bottom plate and the side wall, and a drainage hole is formed on the side of the drainage channel close to the edge of the bottom plate; the drainage channel is located under the waterproof board.

The scheme is further improved, the inside of the cabinet body is separated for a plurality of mutually independent spaces by ceramic insulation baffle, the laminating of ceramic insulation baffle is installed on the mount, and the stiff end of mount is installed on the internal wall of cabinet the inboard correspondence of mount is formed with the installing frame that is used for installing ceramic insulation baffle.

According to the scheme, the bottom plate is further improved, heat dissipation holes are formed in the bottom plate, and more than one layer of dust screen is attached to the upper end faces of the heat dissipation holes; the inside wall laminating of air inlet window is provided with the more than one deck dust screen.

This scheme of further improvement, the roof lock is in the lateral wall top, and the outside extension in edge of roof is formed with the rain-proof eaves, and the rain-proof eaves outward flange turns over downwards to form the outside clearance, be provided with interior shrouding in the inboard that the roof is located the lateral wall, be formed with the inboard clearance between interior shrouding and the lateral wall, the lateral wall intercommunication is passed through in outside clearance and inboard clearance, all is formed with a plurality of bleeder vents on the ventilative board in bottom in outside clearance and inboard clearance.

According to the scheme, the heat radiation fan is mounted on the side wall close to the bottom of the cabinet body, so that high-temperature gas in the cabinet body is discharged.

According to the scheme, the dustproof net is a stainless steel wire net, and the aperture of the stainless steel wire net is smaller than 1 mm.

According to the scheme, the ceramic insulation partition board is sequentially arranged to comprise a ceramic board layer, a flame-retardant material layer and a hard material layer, the flame-retardant material layer is attached to two sides of the ceramic board layer, and the hard material layer is installed on the outer side of the flame-retardant material layer.

According to the scheme, a plurality of first grooves and a plurality of second grooves are formed in the two side faces of the ceramic plate layer, the first grooves and the second grooves are perpendicularly arranged in a staggered mode, and the first grooves and the second grooves penetrate through the end face of the whole ceramic plate layer.

According to the scheme, grid-shaped protruding stripes are formed on the inner end face of each hard material layer, and the internal structure is compressed between the two hard material layers through a connecting piece.

According to the scheme, after the ceramic insulating partition plate is installed on the fixing frame, the hard material layer is located on the outer surface side; the preparation of the ceramic insulating partition plate comprises a ceramic plate layer preparation step, a hard material layer preparation step and a combination step;

Preparing a ceramic plate layer: the ceramic plate layer comprises a blank body and a glaze layer, the step of manufacturing the blank body is that the ceramic blank body is pressed through a mould to form a cake-shaped structure, grooves which are criss-cross are formed on two sides of the inner surface of the ceramic blank body, the depth of each groove is 5-6mm, notches are formed on the edges of the ceramic plate layer, vacuum drying is adopted, and firing is carried out at 165-180 ℃ to obtain the ceramic plate layer blank body; dipping glaze on the surfaces of two sides of the ceramic plate layer blank body to ensure that the depth of the groove is 3-4mm, adopting vacuum drying, and sending the groove into a furnace for firing to obtain a ceramic plate layer;

preparing a hard material layer: punching a metal material to form a plate-shaped structure, punching a plurality of small holes on the peripheral edge of a hard material layer to form a raised flanging on one side of the hard material layer, forming latticed raised stripes on the inner end surface of the hard material layer, forming embossing grooves transversely arranged along the raised stripes, wherein the depth of each embossing groove is 0.5-1mm, a plurality of distance posts are arranged on the inner side edge of the hard material layer, insulating caps are sleeved on the end parts of the distance posts, the positions of the distance posts are right corresponding to the notches of the ceramic plate layer, a flame retardant material layer is laid on the inner end surface of the hard material layer, and the edge of the flame retardant material layer is arranged on the inner side of each distance post;

The combination step is as follows: the ceramic plate layer is placed on the inner side of a group of hard material layers, the opening of the ceramic plate layer is clamped at the position of the distance column, and the connecting piece sequentially penetrates through the screw holes of the two hard material layers to be fixedly clamped, so that the ceramic insulating partition plate is obtained.

Advantageous effects

1. The outdoor power distribution cabinet is suitable for outdoor power distribution cabinets through innovation, the rain-proof performance is good, the waterproof part is correspondingly installed on the air inlet window on the side wall of the cabinet, the waterproof board is arranged to prevent rainwater from flowing backwards, and the waterproof board can prevent rainwater from directly splashing on the electric appliance part in the process of flowing backwards into the cabinet if the rainwater is too large, so that faults such as electrical short circuit are prevented, and the specific analysis is as follows: the air inlet window is used for introducing external low-temperature air into the cabinet body, the inner wall of the air inlet window is provided with a dustproof net in a fitting manner, so that foreign matters such as insects can be prevented from entering, a waterproof component is arranged in the air inlet window, when rainwater flows backwards through the air inlet window, due to the blocking of the waterproof board, the rain water can flow down along the inner walls of the first side board and the second side board and fall into the drainage channel at the periphery of the bottom board, because the bottom plate is higher than the supporting edge, the rainwater can be drained along the drainage channel and through the drainage hole, and simultaneously, because the ventilating fence is arranged on the first side plate, the waterproof board is communicated up and down, external air flow enters the cabinet body through the air inlet windows on the side walls and then enters the cabinet body through the air permeable fence and the upper and lower through holes, the air inlet and heat dissipation requirements can be met, the guide port in three directions is arranged simultaneously, so that air inflow is guided, and all positions of the box body can be cooled sufficiently.

2. According to the invention, through improvement, the upside of the side wall is provided with the inverted U-shaped air inlet channel, and the dust screen is arranged on one side of the air inlet channel, which is positioned in the cabinet body. The bottom plate of the lower part of the cabinet body corresponding to the components is provided with the air inlet window, the upper end face of the air inlet window is provided with the dustproof net, and the side wall is provided with the heat radiation fan.

3. The inside of the cabinet body is separated for a plurality of mutually independent spaces by insulating barrier, be practical for integrating the less switch board of volume very much, avoid insulating properties and the security performance problem that leads to because the electrical part gathering, wherein ceramic insulation barrier is provided with ceramic sheet layer, the internal insulating effect of cabinet has been increased effectively, be provided with flame retardant material layer, abnormal conditions such as short circuit take place in certain cupboard, flame retardant material layer will be heated the inflation, make electrical accident or local fire control in less scope, reduce dangerous condition and loss that the trouble caused.

Drawings

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

Fig. 1 is a view showing the internal structure of a low-voltage distribution box according to the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a block diagram of the base plate of the present invention;

FIG. 4 is a perspective view of a flashing of the present invention;

FIG. 5 is a side view of the flashing;

FIG. 6 is a view showing the construction of the installation of the top plate in the present invention;

FIG. 7 is a structural view of a drain passage in the present invention;

FIG. 8 is an enlarged view taken at A-A of FIG. 7;

FIG. 9 is a schematic diagram of the heat dissipation and condensation removal system;

FIG. 10 is a circuit diagram of the interior of the cabinet of the present invention;

FIG. 11 is a structural view of a ceramic insulating separator in the present invention;

FIG. 12 is a view of the positioning post of the present invention;

FIG. 13 is a schematic view showing the lamination of the layers of the ceramic insulating spacer according to the present invention;

fig. 14 is a flow guiding diagram of an air duct after the cooling fan is started.

The labels in the figure are: 1. the cabinet body comprises 1-1 part of cabinet body, side walls, 111 parts of supporting edges, 1-2 parts of cabinet body, a top plate, 121 parts of rain-proof eaves, 122 parts of inner sealing plates, 1-3 parts of bottom plate, 131 parts of bottom plate, drain holes, 132 parts of heat dissipation holes, 2 parts of air inlet window, 2-1 parts of waterproof edges, 3 parts of waterproof plates, 3-1 parts of first side plates, 311 parts of arc-shaped air channel plates, 3-2 parts of second side plates, 4 parts of heat dissipation fans and 5 parts of heat dissipation fans, the device comprises a plastic case breaker, 6, a fuse type disconnecting switch, 7, a ceramic insulating partition board, 7-1, a ceramic board layer, 711, a groove, 7-2, a flame retardant material layer, 7-3, a hard material layer, 731, a protruding stripe, 732, a distance column, 7-4, a connecting piece, 741, a connecting screw rod, 742, a pressure spring, 743, a nut, 101, a temperature sensor, 102, a humidity sensor, 103, a constant temperature controller, 105 and a heating loop.

Detailed Description

In order to make the technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in the figure: the embodiment provides a multi-functional low voltage distribution box with built-in lateral wall waterproof construction, including the cabinet body 1, the cabinet body 1 is the cuboid structure, and the inside of the cabinet body 1 is separated for a plurality of mutually independent spaces by ceramic insulating barrier 7, the laminating of ceramic insulating barrier 7 is installed on mount 8, and the stiff end of mount 8 is installed on 1 inner wall of the cabinet body the inboard correspondence of mount 8 is formed with the installing frame that is used for installing ceramic insulating barrier 7.

The cabinet body 1 comprises a side wall 1-1, a top plate 1-2 arranged at the upper part of the side wall 1-1 and a bottom plate 1-3 arranged at the lower part of the side wall 1-1, wherein an air inlet window 2 is arranged on the side wall 1-1, the air inlet window 2 consists of a plurality of outer rib plates, an outer air through hole is formed in a gap between two adjacent outer rib plates, and the upper edge of the outer air through hole extends outwards to form an arc-shaped structure waterproof edge 2-1; the inner side of the air inlet window 2 is provided with a waterproof plate 3, the waterproof plate 3 comprises a first side plate 3-1 and a second side plate 3-2, the second side plate 3-2 is provided with two blocks which are respectively and vertically arranged at two corresponding sides of the first side plate 3-1, the outer end part of the second side plate 3-2 is outwards turned over to form a fixed plate, the first side plate 3-1 is provided with a breathable fence, the breathable fence consists of a plurality of inner rib plates, an inner air hole is formed in a gap between two adjacent inner rib plates, an arc-shaped air channel plate 311 is formed by extending the upper edge of the inner air hole, the arc-shaped air channel plate 311 extends towards the opposite direction of the second side plate 3-2, and the inner air hole and the outer air; after entering from the side wall 1-1 air inlet window 2, external air flow can enter the cabinet body 1 through the air permeable fence and the upper and lower through holes, the air inlet heat dissipation requirement can be met, and meanwhile, the guide holes in three directions are arranged, so that air inlet is guided, and therefore all positions above and below the air inlet window 2 can be sufficiently cooled and dissipated.

The top plate 1-2 is buckled above the side wall 1-1, the edge of the top plate 1-2 extends outwards to form a rain-proof eave 121, the outer edge of the rain-proof eave 121 is turned downwards to form an outer side gap, an inner sealing plate 122 is arranged on the inner side, located on the side wall 1-1, of the top plate 1-2, an inner side gap is formed between the inner sealing plate 122 and the side wall 1-1, the outer side gap and the inner side gap are communicated through the side wall 1-1, and air holes are formed in the bottoms of the outer side gap and the inner side gap. If the rainwater takes place to flow backward to cabinet 1 in-process too greatly, waterproof board 3 further can avoid the rainwater to splash to electrical components.

A support edge 111 is formed by extending the lower edge of the side wall 1-1 into the cabinet body 1, the bottom plate 1-3 is buckled on the support edge 111, and the bottom plate 1-3 is higher than the support edge 111, so that a drainage channel is formed between the edge of the bottom plate 1-3 and the side wall 1-1, and a drainage hole 131 is formed at the side of the drainage channel close to the edge of the bottom plate 1-3; the drainage channel is positioned under the vent holes at the air exhaust side of the waterproof plate 3 and the top plate 1-2.

In the scheme, the bottom plate 1-3 is formed with heat dissipation holes 132, and the upper end faces of the heat dissipation holes 132 are provided with more than one layer of dust screens in a fitting manner; the inside wall laminating of air inlet window 2 is provided with the more than one deck dust screen. The dust screen is made of a stainless steel wire mesh, and the aperture of the stainless steel wire mesh is smaller than 1 mm. Can prevent the dust, the effect that the insect got into effectively improves the protection level, and the dust screen of 2 inboard side of air inlet window also has certain effect of keeping off the rain in addition.

In the scheme, the cabinet body 1 and the door are made of 304 stainless steel, the door is an externally hung door, the lock rod is matched, and 1 hanging ring is arranged on each of two sides of the lock rod and is matched with 4 long lead screws; the hinge bolt is made of stainless steel, and the inlet wire bent pipe/outlet wire straight pipe is made of 304; all exposed screws are made of stainless steel; all mounting cross beams in the cabinet body 1 are made of non-flower galvanized plates with the thickness of 1.5mm, the cross beams are provided with component rivet screw holes, and mounting holes for fixing the cross beams to the stand columns are longitudinal long holes; the cabinet body 1 is sprayed on one side, the instrument panel of the compensation chamber corresponds to the door and is provided with an observation window, and the cabinet body is outdoor, has good rain-proof performance and is flat-topped; 2 water outlet holes are formed in the bottom of the front door and the bottom of the rear door of the cabinet body 1; install radiator fan 4 additional in the cabinet body 1 and remove the condensation heater, fan and heater realize automatic control by constant temperature controlling means, must not influence other equipment operation and reduce the protection level of block terminal after the installation fan. In the cabinet body 1, current transformers TA1 and TA2 and a fuse type isolating switch 6 are arranged on one side of an incoming line unit, a 3QF-5QF molded case circuit breaker 5 is arranged on one side of an outgoing line unit in parallel, a co-compensation intelligent capacitor bank C1 and a sub-compensation capacitor bank C2 are connected through a 2QF circuit breaker, and a surge protector SPO is further arranged in parallel with the intelligent capacitor bank.

The outlet chamber is provided with lighting equipment, and the door opening lamp is required to be turned on and the door closing lamp is required to be turned off; three phi 110mm knock-off holes are reserved at the bottom of the wire outlet chamber, and a wire protection sleeve is arranged; the mounting pieces of the upper cabinet body and the lower cabinet body 1 are correspondingly provided with holes; stainless steel bolts or copper studs are welded at the positions of the doors and the corresponding cabinet body 1; the door of the cabinet body 1 can be flexibly opened at an angle of not less than 150 degrees, and can be tightly sealed after being closed, and a sealing strip is additionally arranged between the outer door and the cabinet body 1; the outlet chamber cable fixing frame is fixed on a bottom plate 1-3 of the cabinet body 1, and cable fixing clamps are arranged in all inlet and outlet holes; the welding spot adopts stainless steel argon arc welding for rust prevention treatment; and an insulating protection plate is additionally arranged on the back surface of the outgoing switch plate.

The ceramic insulating partition plate 7 comprises a ceramic plate layer 7-1, a flame retardant material layer 7-2 and a hard material layer 7-3 in sequence, the ceramic insulating partition plate 7 is installed behind a fixing frame 8, the hard material layer 7-3 is located on the outer surface side, the flame retardant material layer 7-2 is attached to two sides of the ceramic plate layer 7-1, and the hard material layer 7-3 is installed on the outer side of the flame retardant material layer 7-2. A plurality of first grooves and a plurality of second grooves are formed in two side faces of the ceramic plate layer 7-1, the first grooves and the second grooves are vertically arranged in a staggered mode, and the first grooves and the second grooves penetrate through the end face of the whole ceramic plate layer 7-1. Grid-shaped convex stripes are formed on the inner end face of the hard material layer 7-3, embossing grooves which are transversely arranged are formed along the convex stripes, and the internal structure is tightly pressed between the two hard material layers 7-3 through a connecting piece 7-4.

The layer 7-2 of flame retardant material is made of expandable graphite, EG, which may also be referred to as graphite intercalation compound. EG begins to swell at about 200 ℃ by decomposition of the interlayer compound, reaches a maximum at about 900 ℃ and has a swelling ratio of 280 times. The expanded graphite is changed from original scaly shape into worm shape with low density, and a high-efficiency heat-insulating and oxygen-isolating layer is formed. The flame retardant not only can synergistically resist flame with a phosphorus flame retardant, but also can effectively play a role in anti-dripping in the process of thermal expansion. The flame retardant material layer 7-2 is formed by twisting graphite wires and weaving, and finally the flame retardant material layer 7-2 is formed.

Because the surface of the flame retardant material layer 7-2 is smooth, in the process of combining with the ceramic plate layer 7-1, the grooves 711 of the ceramic plate layer 7-1 are arranged in a transverse and longitudinal staggered mode, in the process of pressing the ceramic plate layer 7-1 and the flame retardant material layer 7-2, the hard material layers 7-3 are additionally arranged outside the flame retardant material layer 7-2, the two hard material layers 7-3 are pressed inwards and fixed through the connecting piece 7-4, as the inner side surface of the hard material layer 7-3 is provided with the grid-shaped raised stripes 731, the raised stripes 731 press the flame-retardant material layer 7-2 to enter the grooves 711, the raised parts on the raised stripes are provided with embossed grooves, the gripping force of the hard material layer 7-3 and the flame retardant material layer 7-2 can be increased to avoid the generation of slip due to the smooth surface of the flame retardant material layer 7-2. In the actual production process, the raised stripes 731 of the hard material layer 7-3 are arranged corresponding to the grooves 711 of the ceramic plate layer 7-1, in the inward pressing process of the hard material layer 7-3, the flame retardant material layer 7-2 is further pressed into the grooves 711 by the grid-shaped raised stripes 731, the two hard material layers 7-3 are connected through a connecting piece 7-4, the connecting piece 7-4 is a connecting screw 741, a pressure spring 742 penetrates through the end of the connecting screw 741, the outer side of the pressure spring 742 is screwed through a nut 743, and the other side of the pressure spring 742 is in contact with the outer side of the hard material layer 7-3. The connecting piece 7-4 can be made of plastic materials, in the fastening process, the pressure spring 742 gives elastic pressure to the hard material layer 7-3, so that when a rigid component is adopted for pressing, the damage to the ceramic plate layer 7-1 caused by overlarge pressure effectively protects the ceramic plate layer 7-1, meanwhile, in the compressing process, the flame retardant material layer 7-2 is pressed by the convex stripes 731 and enters the groove 711, so that the arrangement effectively increases the extrusion force of the flame retardant material layer 7-2 and the two sides and further improves the elastic space of the connecting piece 7-4 in the compressing process, when the connecting member 7-4 is fastened too tightly, the flame retardant material layer 7-2 is further sunk into the groove 711, and the ceramic plate layer 7-1 cannot be damaged directly due to overlarge extrusion force, and the compression spring 742 and the groove 711 play a role in improving the installation yield of the ceramic insulation plate layer 7. In addition, in order to further reduce the loss in the installation process, the distance posts 732 are arranged on the edges of the hard material layers 7-3, the minimum limit distance allowed by the two hard material layers 7-1 is limited, and the lengths of the distance posts 732 are obtained according to the installation limit pressure experiment, so that misoperation in the installation process is avoided, and the installation yield of the ceramic insulation board layer 7 is improved to the maximum extent. The flame-retardant material layer 7-2 is arranged between the ceramic plate layer 7-1 and the hard material layer 7-3, and also plays a role of a soft gasket, so that the safety of installation and transportation of the ceramic plate layer 7-1 is effectively protected.

The temperature sensor 101 is further mounted on the distance column 731 between the two hard material layers 7-2, and both sides are shielded by the hard material layer 7-2, and simultaneously, one side above or below the hard material layer is shielded by the ceramic plate layer 7-1, the air flow circulation at the position is small, and under the action of the fan system, when the temperature at the position is detected to be reduced to a set value, the temperature at other positions in the corresponding cabinet body 1 is also reduced to be below the set value.

Meanwhile, the temperature measuring sensor 101 is located at the position, and the ceramic insulating partition 7 separates the cabinet chambers at two sides, so when the cabinet body 1 at one side has a short-circuit fault and causes abnormal temperature change, the temperature measuring sensor located at the ceramic insulating partition 7 can rapidly detect the temperature change, in addition, the temperature measuring sensor 101 is fixed on the distance posts 732, and the hard material layer 7-1 is also considered to act as a heat conductor, so that the temperature in the cabinet chambers at two sides of the ceramic insulating partition 7 can be rapidly monitored, the temperature measuring sensor is more reasonable and safer, and the two temperature measuring sensors 101 at each position are respectively located on the upper and lower distance posts 732 of the hard material layer 7-3.

When the temperature in the cabinet chamber on one side changes abnormally, the hard material layer can conduct heat rapidly by 7-1, when the temperature exceeds the upper limit of the expanded graphite, the expanded graphite expands rapidly from the upper side and the lower side so as to separate the two isolated cabinet chambers from each other, and the fire spread is controlled rapidly by utilizing the self flame retardance, so that the safety performance of the whole device is greatly improved.

A heat dissipation and condensation removal system is arranged in a cabinet body 1 and comprises a constant temperature controller 103, a temperature sensor 101, a humidity sensor 102, a heat dissipation fan 4, a heating circuit 105, a micro-break switch and a power supply module, wherein the temperature sensor 101 is used for detecting the temperature in the cabinet body 1, the temperature sensor 101 is arranged on the root part of a distance column 731 on the inner side of a hard material layer 7-3, the humidity sensor 101 is used for detecting the humidity in the cabinet body 1, the humidity sensor 102 is arranged on the outer side end face of the hard material layer 7-3, the temperature sensor 101 and the humidity sensor 102 are used for sending detected signals to the constant temperature controller 103, the constant temperature controller 103 judges the condition in the cabinet body 1 and sends working instructions to the heat dissipation fan 4 or the heating circuit 105 respectively so as to control the temperature and humidity condition in the cabinet body 1, and an L, N terminal of the power supply module is connected with the lighting, the power supply is used for providing power for the heat dissipation and condensation removal system. When the temperature in the cabinet body 1 is higher than or equal to a set value, the thermostatic controller 103 controls the cooling fan 4 to start, so that the circulation of air flow inside and outside the cabinet body 1 is enhanced, when the temperature is reduced to be lower than the set value, the thermostatic controller 103 sends a stop instruction to the cooling fan 4, when the humidity in the cabinet body 1 is higher than the set value, the thermostatic controller 103 controls the heating loop 105 to work, and when the humidity is reduced to be lower than the set value, the thermostatic controller 103 cuts off the power supply of the heating loop 105.

In order to further make full use of the cold volume of the low temperature air that gets into in the cabinet body 1, thereby reduce the temperature better, the cabinet body of this scheme can adopt following mode of setting up, the ceramic insulation baffle 7 of both sides separates into a plurality of cabinets room with the cabinet body, and leave the wind channel mouth at this department ceramic insulation baffle lower edge mount, be formed with the wind channel mouth on the ceramic insulation baffle of opposite side two' S the last reason mount, install radiator fan 4 in the lower part of the inner wall 1-1 that is close to ceramic insulation baffle two, after radiator fan 4 starts, will form a complete approximate S-shaped cooling wind channel circulation direction of cooling, improve the radiating efficiency of the cabinet body 1 greatly, the theory of operation is as follows: air is fed through an air inlet window on the side wall 1-1 of the cabinet body 1 positioned on one side of the ceramic insulating partition plate, enters the cabinet chamber, so that the temperature of the cabinet chamber is reduced, and enters the middle cabinet chamber from an air inlet opening below the ceramic insulating partition plate I, high-temperature air enters the cold air at one position of the heat dissipation holes 1-3 of the bottom plate at the same time of descending, so that the temperature of the high-temperature air is mixed and preliminarily reduced, after entering the middle cabinet chamber, the cold air entering the heat dissipation holes II below the middle cabinet chamber can further reduce the temperature of the mixed gas, so that conditions are provided for reducing the temperature of the middle cabinet chamber, the high-temperature air exhausted from the middle cabinet chamber passes through an air inlet opening on the upper edge of the ceramic insulating partition plate II and enters the cabinet chamber on the side of a heat dissipation fan, after entering the cabinet chamber, the high-temperature air encounters cooling air from the air inlet window 2 on the side wall 1-1, so as to reduce the temperature of components in the cabinet, accomplish whole cooling process, this heat dissipation cooling sets up the mode and strengthens the guide through strengthening the air current, and discharge through radiator fan 4 from the S-shaped wind channel, the internal no cooling dead angle of cabinet 1, make high-temperature gas can not be detained at the internal of cabinet, thereby the radiating efficiency is improved, because whole wind channel sets up with air inlet window 2 and louvre cooperation, make the internal S-shaped wind channel structure that has formed of whole cabinet, because constantly supply new cooling air at a cabinet room exhaust high-temperature gas, meet the back of mixing, thereby further for subsequent cabinet indoor cooling provides the condition, high-temperature gas' S outer guide of arranging has been strengthened simultaneously, high-temperature gas can not take place and locally detain at the internal portion of cabinet, thereby avoid causing local overtemperature.

Because the safety protection performance of the scheme is higher, only one radiating fan 4 is arranged on the side wall 1-1, the purpose is that the operation of other equipment is not influenced and the reduction of the protection level of the whole distribution box is avoided, the radiating effect of the whole device is improved to a certain extent through the cooperation of the radiating fan 4 and the radiating air duct, through experiments, under the condition of the same outdoor condition, the radiating air duct with the structure is not adopted, and under the condition that the radiating fan 4 and the radiating air duct are adopted simultaneously, the temperature is reduced to the same set temperature under the starting condition of the radiating fan 4, the cooling time is shortened by more than half, the working time and the failure rate of a radiating system are effectively reduced, and the service life of the device is prolonged.

The ceramic insulating partition board 7 in the scheme comprises the steps of preparing a ceramic board layer 7-1, preparing a hard material layer 7-3 and combining; preparing a ceramic plate layer 7-1: the ceramic plate layer 7-1 comprises a blank body and a glaze layer, 1, a blank body manufacturing step, wherein the ceramic blank body is pressed through a die to form a cake-shaped structure, grooves 711 which are criss-cross are formed in two sides of the inner surface of the ceramic blank body, the depth of the grooves 711 is 5-6mm, notches are formed in the edge of the ceramic plate layer 7-1, vacuum drying is adopted, and firing is carried out at 165-180 ℃ to obtain a ceramic plate layer blank body; 2. dipping glaze on the surfaces of two sides of the ceramic plate layer blank to ensure that the depth of the groove 711 is 3-4mm, and sending the ceramic plate layer blank into a furnace for firing by adopting vacuum drying to obtain a ceramic plate layer 7-1;

7-3, preparing a hard material layer: punching a metal material to form a plate-shaped structure, punching a plurality of small holes at the peripheral edge of a hard material layer 7-3 to form a raised flanging at one side of the hard material layer 7-3, forming latticed raised stripes 731 on the inner end surface of the hard material layer 7-3, forming embossing grooves transversely arranged along the raised stripes 731, wherein the depth of each embossing groove is 0.5-1mm, installing a plurality of distance posts 732 at the inner edge of the hard material layer 7-3 by brazing, sleeving insulating caps at the end parts of the distance posts 732, arranging the position of each distance post 732 right corresponding to a notch of a ceramic plate layer 7-1, paving a flame retardant material layer 7-2 on the inner end surface of the hard material layer 7-3, and arranging the edge of the flame retardant material layer 7-2 at the inner side of the distance post 732;

the combination step is as follows: and placing the ceramic plate layer 7-1 at the inner side of the group of hard material layers 7-3, clamping the opening of the ceramic plate layer 7-1 at the position of the distance column 732, and sequentially penetrating through screw holes 7-3 of the two hard material layers by using a connecting piece 7-4 for fixing and clamping to obtain the ceramic insulating partition plate 7.

The green body of the ceramic plate layer 7-1 comprises the following components in percentage by weight: 50-60 parts of clay, 16-20 parts of bauxite powder, 22-26 parts of silicon dioxide powder, 13-15 parts of terra alba, 4-6 parts of zirconia, 4-7 parts of feldspar, 3-6 parts of talcum powder and 8-12 parts of glass fiber. According to the scheme, water with the mass of 0.4 time of that of the ceramic plate layer 7-1 is added into the raw materials according to the weight percentage, and the mixture is added into a ball mill and ball-milled into slurry with the particle size of 300 meshes; injecting into a prepared mould, and taking out for later use after molding; the glaze layer is made of lime glaze; the thickness of the glaze layer is 2 mm.