CN212991754U - Ring main unit with circulating air function - Google Patents

Abstract

The utility model provides a looped netowrk cabinet with circulated air function belongs to distribution equipment technical field. The ring main unit solves the problems that in the prior art, the ring main unit is designed to independently depend on the heat transfer sheet for heat transfer, and when the external environment temperature is higher, the heat is not easy to conduct outwards and the like. This looped netowrk cabinet with circulated air function includes the cabinet body, and the cabinet body is inside, outside two-layer structure, including shell body and interior casing, is a return air chamber between shell body and the interior casing, and at least one air outlet and air intake have been seted up respectively to the upside and the downside of interior casing, and air outlet and air intake are the one-to-one setting, and each is provided with the ventilation pipe that runs through in interior casing from top to bottom between air outlet and the air intake, is provided with a plurality of ventilation holes \ etc. along axial extending direction on the ventilation pipe. This looped netowrk cabinet with circulated air function's advantage lies in: by forming an air circulation between the inner shell and the air return cavity, the heat in the inner shell is discharged and exchanges heat with the water pipe circulation subsystem, thereby improving the environment in the inner shell.

Description

Ring main unit with circulating air function

Technical Field

The utility model belongs to the technical field of distribution equipment, especially, be used for the looped netowrk cabinet of high-voltage distribution usefulness more than 15 KV.

Background

The ring main unit is an electrical device which is formed by a group of high-voltage switch devices arranged in a steel plate metal main unit body or made into an assembled interval ring main unit, and the core part of the ring main unit adopts a load switch and a fuse. With large-scale urban construction, a large number of large-scale high-rise buildings are pulled out, the power transformation and distribution station is often arranged below a building, the power transformation and distribution equipment must be oilless according to the fire-fighting requirement, the power transformation and distribution equipment should be miniaturized according to reasonable use of the construction area, and then the ring main unit enters the building.

Current electrical components such as electrical switch for high-voltage distribution all install in special looped netowrk cabinet that requires high to the insulation, current also strengthens thereupon under because of the high pressure, lead to the electrical components in the looped netowrk cabinet to be the geometric grade increase at the heat that the during operation sent, people come the heat conduction of looped netowrk cabinet away through the mode that sets up the heat transfer piece on the looped netowrk cabinet outside for this reason, this kind of mode can transmit partly heat, but when external environment is higher, the heat conduction effect is unsatisfactory, will cause very big influence to electrical components's in the looped netowrk cabinet machinery like this, physical properties and life-span.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solve among the above-mentioned problem at least partly have looped netowrk cabinet of circulated air function.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a looped netowrk cabinet with circulated air function, including the cabinet body, its characterized in that: the cabinet body is inside and outside two-layer structure, including shell body and interior casing, be a return air chamber between shell body and the interior casing, at least one air outlet and air intake have been seted up respectively to the upside and the downside of interior casing, and air outlet and air intake are the one-to-one setting, run through the ventilation pipe in interior casing from top to bottom to being provided with between every pair of air outlet and air intake, are provided with a plurality of ventilation holes along axial extending direction on the ventilation pipe, and return air chamber is equipped with the water pipe circulation subsystem.

In the ring main unit with the air circulation function, the central line of the vent hole below the upper middle part of the vent pipe is arranged upwards in an inclined manner from inside to outside, and the central line of the vent hole above the upper middle part of the vent pipe is arranged downwards in an inclined manner from inside to outside.

In the above-mentioned looped netowrk cabinet that has the circulated air function, the setting that reduces gradually is presented from inside to outside in the ventilation hole that is located below the ventilation pipe middle part, and the setting that enlarges gradually is presented from inside to outside in the ventilation hole that is located above the ventilation pipe middle part.

In the ring main unit with the circulating air function, the suction fan is arranged in the port of the air inlet end on the ventilation pipe.

In the ring main unit with the air circulation function, the middle part in the ventilation pipe is provided with the wind blocking sheet for blocking the wind from the lower part.

In the ring main unit with the circulating air function, an exhaust fan is arranged in a port of the vent pipe, which is positioned at the air outlet end.

In the ring main unit with the air circulation function, the water pipe circulation subsystem comprises a water pipe which is attached to the inner side of the circular air cavity and is positioned on one side of the outer shell and the inner shell, and at least one water pump, a control valve and a water temperature detector are arranged on the water pipe.

In the ring main unit with the function of circulating air, the inner side of the outer shell is provided with the heat insulation layer, and the outer side of the inner shell is convexly provided with the heat conduction fins.

Compared with the prior art, this looped netowrk cabinet with circulated air function's advantage lies in: the setting of a circle shape wind cavity between shell body and the interior casing, the setting of the air inlet that is located on interior casing, air outlet and the setting of water pipe circulation subsystem are discharged to circle shape wind cavity to the interior wind of looped netowrk cabinet by interior casing, thereby get into interior casing once more behind the water pipe circulation subsystem in the circle shape wind cavity and formed the circulated air and become for the possibility, are favorable to the discharge of the heat in the interior casing.

Drawings

In order to more clearly illustrate the embodiments of the present 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 provides a schematic diagram of the internal structure in an embodiment of the present invention.

Fig. 2 provides a schematic structural view of a vent tube in an embodiment of the present invention.

In the figure, a cabinet body 1, an outer shell 11, an inner shell 12, a square-wave air cavity 2, an air outlet 3, an air inlet 4, a ventilation pipe 5, a wind-blocking sheet 51, a ventilation hole 6, a suction fan 7, an exhaust fan 8 and a water pipe 9.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

As shown in fig. 1 to 2, this looped netowrk cabinet with circulated air function, including the cabinet body 1, the cabinet body 1 is interior, outer two-layer structure, including shell body 11 and interior casing 12, be a return air chamber 2 between shell body 11 and the interior casing 12, at least one air outlet 3 and air intake 4 have been seted up respectively to the upside and the downside of interior casing 12, air outlet 3 and air intake 4 are the one-to-one setting, it runs through ventilation pipe 5 in interior casing 12 from top to bottom to be provided with between every pair of air outlet 3 and air intake 4, be provided with a plurality of ventilation holes 6 along axial extending direction on the ventilation pipe 5, return air chamber 2 is equipped with the water pipe circulation.

It should be noted that the water pipe circulation subsystem refers to a water pipeline system, which mainly comprises the water pipe 9, and in one or more embodiments, the water pipe 9 is attached to the side of the outer shell 11 and the inner shell 12 in the air return chamber 2.

In addition, in order to control the flow rate of the water in the water pipe 9 according to the temperature of the water, in one or more embodiments, at least one water pump, a control valve and a water temperature detector are further provided on the water pipe 9.

It should be noted that, the above-mentioned ring main unit has a working principle that, after the air in the inner housing 1 absorbs heat, the air moves towards the air outlet 3 on the upper side of the inner housing 1 (i.e. enters the ventilation pipe 5 through the ventilation hole 6, and then flows out from the end of the ventilation pipe 5 at the air outlet 3), the hot air flowing out of the ventilation pipe 5 exchanges heat with the water pipe circulation subsystem in the return air cavity 2, the flowing air with reduced temperature enters the ventilation pipe 5 again from the air inlet 4 on the lower side of the inner housing 1, and is transported into the inner housing 1 through the ventilation hole 6, and the air flowing into the inner housing 1 continuously absorbs heat emitted by the electrical components in the inner housing 1, and this process is repeated to form a circulating air system.

Since the air in the inner case 12 flows toward the upper portion thereof after absorbing heat, in order to allow wind having a relatively low temperature at the relatively lower portion of the ventilation pipe 5 to flow into the inner case 12 well, in one or more embodiments, the ventilation holes 6 located below the upper and middle portions of the ventilation pipe 5 are arranged such that the center line thereof is inclined upward from the inside to the outside, and similarly, in order to allow air having absorbed heat to flow into the ventilation pipe 5 well, in one or more embodiments, the ventilation holes 6 located above the upper and middle portions of the ventilation pipe 5 are arranged such that the center line thereof is inclined downward from the inside to the outside.

To increase the flow rate of air out of the ventilation tube 5, in one or more embodiments, the ventilation holes 6 located below the middle of the ventilation tube 5 are arranged to be gradually narrowed from the inside to the outside, and similarly, to increase the flow rate of air absorbing heat in the inner housing 12 into the ventilation tube 5 and to absorb more air, in one or more embodiments, the ventilation holes 6 located above the middle of the ventilation tube 5 are arranged to be gradually enlarged from the inside to the outside.

In order to keep the relatively low temperature of the air introduced into the ventilation pipe 5 at all times when it is output to the inner case 12 to ensure the efficiency of absorbing heat in the inner case 12, in one or more embodiments, a wind blocking sheet 51 for blocking wind from a lower portion thereof is provided at a middle portion in the ventilation pipe 5.

It should be noted that the wind-blocking sheet 51 may serve as a complete blocking function (i.e. completely blocking the central passage in the ventilation pipe 5) as required, or may serve only to slow the upward flow speed of the air in the ventilation pipe 5 at the relatively lower part, rather than completely blocking, so that most of the air with a relatively lower temperature in the ventilation pipe 5 flows into the inner housing 12 first to directly absorb the heat generated by the electric components in the inner housing 12, and then enters the ventilation pipe 5 again, and only flows in the ventilation pipe 5.

In order to accelerate the flow rate and the directional flow pattern of the air with relatively low temperature, in one or more embodiments, a suction fan 7 is arranged in the end of the ventilation pipe 5 located at the air inlet 4.

In order to accelerate the flow rate and the directional flow pattern of the heat-absorbing air, in one or more embodiments, an exhaust fan 8 is arranged in the port of the ventilation pipe 5 at the end of the air outlet 3.

Additionally, in order to further improve the outward transfer of heat in the inner casing 12, in one or more embodiments, heat conduction fins (not shown) are protruded on the outer side of the inner casing, and since the heat conduction fins are arranged in the wind cavity 2, the air flowing through the heat conduction fins in the wind cavity 2 absorbs the heat from the heat conduction fins and then exchanges heat with the water pipes 9 in the wind cavity 2.

Additionally, in order to prevent external heat from being transferred back into the loop air chamber 2 when the external ambient temperature is higher than the temperature of the cooled air in the loop air chamber 2, thereby being detrimental to heat release of the air in the loop air chamber 2, in one or more embodiments, an insulating layer is disposed inside the outer casing 11.

It should be noted that the insulating layer may be made of an insulating material (such as a polyurethane material in general) or may be formed due to the insulating effect of the structure (such as a vacuum structure).

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the cabinet 1, the outer casing 11, the inner casing 12, the air return chamber 2, the air outlet 3, the air inlet 4, the ventilation pipe 5, the wind blocking sheet 51, the ventilation hole 6, the suction fan 7, the exhaust fan 8, the water pipe 9, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (8)

1. The utility model provides a looped netowrk cabinet with circulated air function, includes cabinet body (1), its characterized in that: the cabinet body (1) construct for inside and outside two-layer, including shell body (11) and interior casing (12), shell body (11) and interior casing (12) between be a circle shape wind chamber (2), the upside and the downside of interior casing (12) seted up at least one air outlet (3) and air intake (4) respectively, air outlet (3) and air intake (4) be the one-to-one setting, each is provided with ventilation pipe (5) that run through in interior casing (12) from top to bottom between air outlet (3) and air intake (4), ventilation pipe (5) on be provided with a plurality of ventilation holes (6) along axial extending direction, circle shape wind chamber (2) be equipped with water pipe circulation subsystem.

2. The ring main unit with the circulating wind function according to claim 1, wherein a center line of the vent hole (6) located below the upper middle portion of the vent pipe (5) is arranged to be inclined upward from inside to outside, and a center line of the vent hole (6) located above the upper middle portion of the vent pipe (5) is arranged to be inclined downward from inside to outside.

3. The ring main unit with the function of circulating wind according to claim 2, wherein the vent holes (6) below the middle of the vent pipe (5) are arranged in a gradually decreasing manner from inside to outside, and the vent holes (6) above the middle of the vent pipe (5) are arranged in a gradually increasing manner from inside to outside.

4. The ring main unit with the circulating wind function according to claim 1, wherein a wind blocking sheet (51) for blocking wind from a lower portion of the ventilation pipe (5) is arranged in the middle of the ventilation pipe.

5. The ring main unit with the circulating air function according to claim 1, wherein a suction fan (7) is arranged in a port of the ventilation pipe (5) at the air inlet (4) end.

6. The ring main unit with the circulating air function according to claim 1, wherein an exhaust fan (8) is arranged in a port of the vent pipe (5) at the air outlet (3) end.

7. The ring main unit with the function of circulating wind according to claim 1, wherein the water pipe circulation subsystem comprises a water pipe (9) attached to one side of the outer shell (11) and the inner shell (12) in the air return cavity (2), and at least one water pump, a control valve and a water temperature detector are arranged on the water pipe (9).

8. The ring main unit with the function of circulating wind according to claim 1, wherein the inner side of the outer shell (11) is provided with a heat insulation layer, and the outer side of the inner shell (12) is convexly provided with heat conduction fins.

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