CN216289778U

CN216289778U - Low-voltage reactive power compensation device

Info

Publication number: CN216289778U
Application number: CN202122396223.2U
Authority: CN
Inventors: 林长发; 罗云; 江琼
Original assignee: Hangzhou Chujiang Electric Co ltd
Current assignee: Hangzhou Chujiang Electric Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-12
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a low-voltage reactive power compensation device, which relates to the technical field of electric power systems and comprises a cabinet body, wherein a heat dissipation cavity, an equipment cavity and an air inlet cavity are sequentially arranged in the cabinet body, vent holes are formed among the equipment cavity, the heat dissipation cavity and the air inlet cavity, heat dissipation holes communicated with the outside are formed in the inner wall of the heat dissipation cavity, and fan units are arranged in the cabinet body and respectively blow air to the heat dissipation cavity and the air inlet cavity. Through the setting in heat dissipation chamber and the chamber of admitting air, the air current is through chamber, the equipment chamber of admitting air, then carries the heat and gets into the heat dissipation chamber from the air vent of opposite side, and from bottom to top air current makes the air that is carrying the heat in the heat dissipation chamber to discharge through the louvre rapidly to prevent that the heat from gathering, the radiating effect is better, has also avoided directly opening the problem that leads to the dust to get into easily with the hole of equipment chamber intercommunication on the cabinet body in the tradition simultaneously.

Description

Low-voltage reactive power compensation device

Technical Field

The utility model relates to the technical field of power systems, in particular to a low-voltage reactive power compensation device.

Background

The increasing expansion of the power grid scale and the wide use of power electronic equipment increase a large amount of inductive loads and nonlinear loads in a power supply system, increase the loss of a power supply transformer and a transmission line, and the power quality problem brought by the equipment is increasingly prominent. Reactive power compensation is indispensable important equipment in a power system, and the reactive power compensation device is reasonably selected, so that the reactive loss of a power grid can be reduced to the maximum extent, and the quality of the power grid is improved.

The heat dissipation of low pressure reactive power compensation device cabinet at present stage generally divide into natural heat dissipation and fan heat dissipation, and the vent sets up the side at the cabinet body, and the heat is easy to be at the internal accumulation of cabinet, leads to above-mentioned radiating mode effect general to, external air directly gets into the cabinet internally through the vent, and impurity such as dust in the air can deposit at the internal of cabinet, causes the damage to the equipment in the cabinet, to above-mentioned defect, has proposed this application.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-voltage reactive power compensation device, which solves the problems that the reactive power compensation device in the prior art is poor in heat dissipation effect and dust is easy to enter a cabinet body.

In order to solve the problems, the utility model provides a low-voltage reactive power compensation device which comprises a cabinet body, wherein a heat dissipation cavity, an equipment cavity and an air inlet cavity are sequentially arranged in the cabinet body, air vents are arranged between the equipment cavity and the heat dissipation cavity as well as between the equipment cavity and the air inlet cavity, heat dissipation holes communicated with the outside are formed in the inner wall of the heat dissipation cavity, and fan units are arranged in the cabinet body and respectively blow air into the heat dissipation cavity and the air inlet cavity.

According to an embodiment of the present invention, the vent hole between the heat dissipation chamber and the device chamber is a one-way air outlet.

According to an embodiment of the present invention, the fan unit is disposed at the bottom of the cabinet.

According to an embodiment of the present invention, the fan unit further comprises a temperature sensor electrically connected to the fan unit.

According to an embodiment of the utility model, the fan unit comprises a fan cavity arranged in the cabinet body, the fan cavity is communicated with the heat dissipation cavity and the air inlet cavity, a double-shaft motor is arranged in the fan cavity, fan blades are mounted on two motor shafts of the double-shaft motor, and an air inlet hole is formed in the inner wall of the fan cavity.

According to an embodiment of the present invention, a partition is disposed in the fan cavity, and the partition is located between the two fan blades.

According to an embodiment of the utility model, a filter unit is arranged in the air inlet between the partition and the air inlet chamber.

According to an embodiment of the present invention, the heat dissipation holes are disposed at heights corresponding to the air holes one by one.

According to an embodiment of the present invention, the diameter of the vent hole between the air intake chamber and the equipment chamber gradually increases from bottom to top.

According to an embodiment of the utility model, the cabinet plate of the cabinet body, which is positioned at one side of the heat dissipation cavity, is detachable.

The heat dissipation cabinet has the advantages that through the arrangement of the heat dissipation cavity and the air inlet cavity, air flows pass through the air inlet cavity and the equipment cavity, then the air flows with heat enter the heat dissipation cavity from the vent hole on the other side, the air flows from bottom to top in the heat dissipation cavity prompt the air with heat to be rapidly discharged through the heat dissipation holes, so that heat accumulation is prevented, the heat dissipation effect is better, and meanwhile, the problem that dust easily enters due to the fact that holes communicated with the equipment cavity are directly formed in the cabinet body in the prior art is avoided.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of the overall structure of a low-voltage reactive power compensation device;

FIG. 2 is a side view of the cabinet;

fig. 3 is a top view of the fan cavity.

Detailed Description

The following description is only for the purpose of disclosing the utility model so as to enable a person skilled in the art to practice the utility model. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the utility model.

As described in detail below in conjunction with fig. 1-3.

A low-voltage reactive power compensation device comprises a cabinet body 1, wherein a heat dissipation cavity 4, an equipment cavity 15 and an air inlet cavity 5 are sequentially arranged in the cabinet body 1, a low-voltage reactive automatic compensation module is arranged in the equipment cavity 15, vent holes 9 are arranged between the equipment cavity 15 and the heat dissipation cavity 4 as well as between the equipment cavity 15 and the air inlet cavity 5, heat dissipation holes 2 communicated with the outside are formed in the inner wall of the heat dissipation cavity 4, a fan unit 20 is arranged in the cabinet body 1, the fan unit 20 blows air into the heat dissipation cavity 4 and the air inlet cavity 5 respectively, the low-voltage reactive power compensation device also comprises a temperature sensor which can be integrated in the cabinet body 1 or can be independently arranged in the equipment cavity 15, the temperature sensor is electrically connected with the fan unit 20, the fan unit 20 is arranged at the bottom of the cabinet body 1, the fan unit 20 comprises a fan cavity 6 arranged in the cabinet body 1, the fan cavity 6 is communicated with the heat dissipation cavity 4 and the air inlet cavity 5, a double-shaft motor 7 is arranged in the fan cavity 6, the double-shaft motor 7 is electrically connected with the temperature sensor, two motor shafts of the double-shaft motor 7 are provided with fan blades 8, and the inner wall of the fan cavity 6 is provided with an air inlet 10.

When temperature sensor detects that the temperature is higher than appointed value in the cabinet body 1, send the instruction of opening to biax motor 7, flabellum 8 rotates and blows in heat dissipation chamber 4 and air inlet chamber 5 respectively with the air current, the air current in air inlet chamber 5 passes through in air vent 9 gets into equipment cavity 15 then carries the heat and gets into in heat dissipation chamber 4 from the air vent 9 of opposite side, the air current from bottom to top in heat dissipation chamber 4 will carry thermal air and discharge through louvre 2 rapidly, thereby prevent the heat and gather, the radiating effect is better, also avoided directly to open on the cabinet body in the tradition has the hole that leads to the easy problem that gets into of dust with equipment cavity intercommunication.

Preferably, the one-way valve 3 is arranged in the vent hole 9 between the heat dissipation cavity 4 and the equipment cavity 15 to form a one-way air outlet which can only give out air from the equipment cavity 15 to the heat dissipation cavity 4, so that the problem that air flow with heat in the equipment cavity 15 is influenced by external air flow to cause slow discharge is avoided, and meanwhile, the equipment cavity can be further isolated from the outside to prevent dust from entering.

Preferably, a partition 16 is provided in the fan cavity 6, and the partition is located between the two fan blades 8 to prevent the airflow between the heat dissipation cavity 4 and the air inlet cavity 5 from influencing each other.

Preferably, a filter unit is arranged in the air inlet 10 between the partition 16 and the air inlet cavity 5, and the filter unit is a dustproof filter screen 11, so that dust is blocked in the air inlet stage, and the dustproof effect is improved.

Preferably, the heat dissipation holes 2 are arranged at heights corresponding to the air vents 9 one by one, so that hot air flow can be directly discharged conveniently.

Preferably, the diameter of the vent hole 9 between the air inlet cavity 5 and the equipment cavity 15 is gradually increased from bottom to top, so that the airflow in the air inlet cavity 5 uniformly enters the equipment cavity 15, and the problem that the airflow in the upper space of the equipment cavity 15 enters less airflow is avoided.

Preferably, the cabinet plate of the cabinet body 1 on one side of the heat dissipation chamber 4 can be detached, and after the cabinet plate is detached, an operator can clean dust in the heat dissipation chamber 4.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and the embodiments of the present invention may be subject to any changes or modifications without departing from the principles.

Claims

1. A low-voltage reactive power compensation device is characterized in that: including the cabinet body (1), be equipped with heat dissipation chamber (4), equipment chamber (15) and air intake chamber (5) in the cabinet body (1) in proper order, equipment chamber (15) with heat dissipation chamber (4) with be equipped with air vent (9) between air intake chamber (5), heat dissipation chamber (4) inner wall is equipped with louvre (2) with external intercommunication, be equipped with fan unit (20) in the cabinet body (1), fan unit (20) respectively to heat dissipation chamber (4) with air intake chamber (5) is interior to be bloied.

2. A low voltage reactive power compensation device according to claim 1, wherein: the vent hole (9) between the heat dissipation cavity (4) and the equipment cavity (15) is a one-way air outlet.

3. A low voltage reactive power compensation device according to claim 1, wherein: the fan unit (20) is arranged at the bottom of the cabinet body (1).

4. A low voltage reactive power compensation device according to any one of claims 1-3, characterized in that: also included is a temperature sensor electrically connected to the fan unit (20).

5. A low voltage reactive power compensation device according to claim 4, wherein: fan unit (20) are including setting up fan chamber (6) in the cabinet body (1), fan chamber (6) with heat dissipation chamber (4) with admit air chamber (5) intercommunication, be equipped with double-shaft motor (7) in fan chamber (6), install flabellum (8) on two motor shafts of double-shaft motor (7), be equipped with inlet port (10) on fan chamber (6) inner wall.

6. A low voltage reactive power compensation device according to claim 5, wherein: a partition plate (16) is arranged in the fan cavity (6), and the partition plate (16) is positioned between the two fan blades (8).

7. A low voltage reactive power compensation device according to claim 6, wherein: a filter unit is arranged in the air inlet hole (10) between the clapboard (16) and the air inlet cavity (5).

8. A low voltage reactive power compensation device according to any one of claims 1-3, 5-7, characterized in that: the heat dissipation holes (2) are arranged at heights corresponding to the air vents (9) one by one.

9. A low voltage reactive power compensation device according to claim 8, wherein: the diameter of the vent hole (9) between the air inlet cavity (5) and the equipment cavity (15) is gradually increased from bottom to top.

10. A low voltage reactive power compensation device according to claim 8, wherein: the cabinet body (1) is positioned on the cabinet plate at one side of the heat dissipation cavity (4) and can be detached.