CN206397663U - A kind of SVG cooling-fan installations switching device - Google Patents

Abstract

The utility model discloses a switching device for an SVG cooling and ventilation system, which includes an SVG chamber, a ventilation duct, and a switching channel. The switching channel includes a horizontal baffle, a fixed baffle, and a movable baffle, and the movable baffle can move upward or downward. When the moving baffle moves up to the limit position, it touches against the top wall of the horizontal channel, and when it moves down to the limit position, it touches against the horizontal baffle of the switching channel; when the moving baffle touches down against the horizontal baffle, the outdoor vertical The aisle and the indoor vertical sub-channel are connected through the horizontal sub-channel, the indoor and the outdoor are connected, and the SVG room is in the external circulation mode; when the moving baffle is up against the top wall of the horizontal sub-channel, the indoor and outdoor are isolated, and the outdoor is switched through When the channel returns to the external environment, the indoor is in the internal cycle working mode; when the movable baffle is in the middle position, and the upper part does not touch the top wall of the horizontal channel, and the lower part does not touch the horizontal baffle, the indoor and outdoor are in the semi-circular working mode.

Description

A SVG cooling ventilation system switching device

technical field

The utility model relates to the technical field of wind power generation, in particular to an SVG cooling ventilation system switching device structure.

Background technique

Electric SVG cooling methods include self-cooling, air-cooling, liquid cooling (including oil-cooled and water-cooled) and evaporative cooling. ① Natural cooling, SVG relies on the natural convection and heat radiation of the surrounding air to dissipate heat. Therefore, the manufacture, installation, and use of the radiator are convenient, but the heat dissipation effect is poor, so it is generally only used for power electronic devices with small current capacity. ②Air-cooled type: rely on flowing cold air to dissipate heat. The cold air is supplied by a special fan or blower through a certain air duct. ③Water-cooled type: water is used as the cooling medium, the heat dissipation effect is good, and the radiator is small in size. However, the water-cooled type requires a circulating water supply system and has higher requirements for water quality.

Therefore, at present, the air-cooling method is the most widely used. For example, the SVG dynamic reactive power compensation device in the prior art adopts the air-cooling method. Each power cabinet is equipped with an axial flow fan, and all axial flow fans exhaust air to the outside. Due to the large wind and sand on site, the indoor cable trench and the bottom of the cabinet are not tightly sealed. When the axial flow fan is running, the external air flows through the gap at the bottom of the cable trench and the panel cabinet to form a circulation, and the dust in the cable trench and the external dust are sucked into the power cabinet and the power cabinet. In the SVG room, there is a lot of floating dust on the equipment in the on-site cabinet, and there is a lot of dust on the SVG room floor. There is a lot of floating dust in the equipment in the cabinet, which is not conducive to the heat dissipation of the equipment, which directly leads to the overheating of the equipment during operation. The floating dust may also generate static electricity and cause electrical fire accidents. There is a lot of dust on the indoor floor of the SVG, resulting in a lot of floating dust in the filter screen of the ventilation window of the SVG room and the filter screen of the power cabinet.

Contents of the invention

The purpose of this utility model is to provide a SVG cooling and ventilation system switching device for the above-mentioned defects and deficiencies of the prior art, which is used in the original air-cooled SVG room and changes the direction of the cooling air from the original one-way circulation to two-way Circulation not only solves the problem of too low SVG room temperature in winter, but also slows down the fouling speed of ventilation windows.

In order to achieve the above object, the technical solution of the utility model is:

A kind of SVG cooling ventilation system switching device, comprises SVG room, through the wall body of SVG room, the ventilation duct that connects SVG outdoor and SVG indoor; Said ventilation duct includes outdoor vertical sub-channel, indoor vertical sub-channel and connected outdoor vertical channel. Sub-channel, the horizontal sub-channel of the indoor vertical sub-channel; the SVG cooling and ventilation system switching device also includes a switching channel parallel to the outdoor vertical sub-channel, and the switching channel includes a horizontal baffle, a fixed baffle and a movable baffle, The movable baffle can move upwards or downwards. When the movable baffle moves up to the limit position, it will resist the top wall of the horizontal sub-channel, and when it moves down to the limit position, it will resist the horizontal baffle plate of the switching channel; When the moving baffle is facing down against the horizontal baffle, the outdoor vertical sub-channel and the indoor vertical sub-channel are connected through the horizontal sub-channel, the indoor and outdoor conduction, and the SVG room is in the external circulation mode; When the plate is up against the top wall of the horizontal sub-channel, the indoor is isolated from the outdoor, and the outdoor is returned to the external environment through the switching channel, and the indoor is in the internal circulation working mode; When the top wall is in contact and the bottom is not in contact with the horizontal baffle, the indoor and outdoor are in a semi-circular working mode.

As an improvement to the above technical solution, the moving baffle is movably arranged on the wall of the SVG room, and a chute for moving the moving baffle up and down is provided in the middle of the wall, and the moving baffle can slide The card is set in the chute, the inner side of the wall is provided with an electric push rod, the moving baffle is provided with an upper fixing seat, the ground of the SVG room is provided with a lower fixing seat, and the electric push rod is connected with The upper fixed seat is hinged, and the lower and lower fixed seats are hinged.

As an improvement to the above technical solution, the electric push rod is equipped with a servo motor, the SVG chamber is provided with a temperature sensor, a temperature controller and an electrical control box for controlling the operation of the servo motor, and the temperature sensor is electrically connected to the temperature controller , the temperature controller is electrically connected with the electrical control box to control the opening or closing of the servo motor.

When the external temperature reaches a certain low value, through the control of the switching device, it is switched to the internal circulation working mode to maintain the indoor temperature and reduce the indoor negative pressure; when the external temperature further decreases and the indoor temperature drops to a lower low value , through the control of the switching device, the entire SVG room is in the internal circulation working mode to ensure that the indoor temperature is within a reasonable range; in the complete internal circulation working mode, the indoor temperature will gradually increase. The control of the switching device makes it switch to the external circulation working mode to reduce the indoor temperature; if the external temperature rises further and the indoor temperature rises to a higher value, through the control of the switching device, the entire SVG room is in the outdoor mode. Cyclic working mode, so as to achieve the purpose of reducing the indoor temperature.

Compared with the prior art, the utility model has the advantages and positive effects as follows:

The switching device of the SVG cooling and ventilation system in the utility model changes the direction of the cooling air from the original one-way circulation to a two-way circulation, which not only solves the problem of the SVG room temperature being too low in winter, but also reduces the pollution of the ventilation windows speed.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a structural representation of the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection of the present utility model. within range.

As shown in Figure 1, the switching device of the SVG cooling and ventilation system of the present utility model includes an SVG room, a ventilation duct 1 that passes through the wall of the SVG room and connects the outside of the SVG with the interior of the SVG; the ventilation duct 1 includes an outdoor vertical branch Passage 11, indoor vertical sub-channel 12 and horizontal sub-channel 13 connecting the outdoor vertical sub-channel 11 and indoor vertical sub-channel 12; the SVG cooling and ventilation system switching device also includes a switching channel 2 parallel to the outdoor vertical sub-channel 11, The switching channel 2 includes a horizontal baffle 21, a fixed baffle 22 and a movable baffle 23, the movable baffle 23 can move upwards or downwards, and when the movable baffle 23 moves upwards to a limit position, it is connected with the horizontal branch channel. 12 against the top wall, and move down to the limit position against the horizontal baffle 21 of the switching channel 2; The vertical sub-channel 13 is connected through the horizontal sub-channel 12, the indoor and the outdoor are connected, and the SVG room is in the external circulation mode; when the moving baffle 23 is upwardly against the top wall of the horizontal sub-channel 12, the indoor and the outdoor are isolated, The outdoor is returned to the external environment through the switching channel 11, and the indoor is in the internal circulation mode; when the movable baffle is in the middle position, when the top wall does not touch the top wall of the horizontal sub-channel 12, and the bottom does not touch the horizontal baffle 21, the indoor It is in a semi-circular working mode with the outdoor.

The movable baffle 13 is movably arranged on the wall of the SVG room, and the middle of the wall 3 is provided with a chute for moving the movable baffle 23 up and down, and the movable baffle 23 is slidably clamped on the In the chute, the inner side of the wall 3 is provided with an electric push rod 4, the moving baffle 23 is provided with an upper fixing seat 5, the ground of the SVG room is provided with a lower fixing seat 6, and the electric push rod 4 The upper is hinged with the upper fixed seat 5, and the lower is hinged with the lower fixed seat 6.

The electric push rod is equipped with a servo motor, the SVG chamber is provided with a temperature sensor, a temperature controller and an electrical control box for controlling the operation of the servo motor, the temperature sensor is electrically connected to the temperature controller, and the temperature controller is connected to the electrical The control box is electrically connected to control the opening or closing of the servo motor.

When the external temperature reaches a certain low value, through the control of the switching device, it is switched to the internal circulation working mode to maintain the indoor temperature and reduce the indoor negative pressure; when the external temperature further decreases and the indoor temperature drops to a lower low value , through the control of the switching device, the entire SVG room is in the internal circulation working mode to ensure that the indoor temperature is within a reasonable range; in the complete internal circulation working mode, the indoor temperature will gradually increase. The control of the switching device makes it switch to the external circulation working mode to reduce the indoor temperature; if the external temperature rises further and the indoor temperature rises to a higher value, through the control of the switching device, the entire SVG room is in the outdoor mode. Cyclic working mode, so as to achieve the purpose of reducing the indoor temperature.

Compared with the prior art, the utility model has the advantages and positive effects as follows:

The switching device of the SVG cooling and ventilation system in the utility model changes the direction of the cooling air from the original one-way circulation to a two-way circulation, which not only solves the problem of the SVG room temperature being too low in winter, but also reduces the pollution of the ventilation windows speed.

Claims (3)

1. A kind of SVG cooling and ventilating system switching device, comprise SVG room, pass the body of wall of SVG room and the ventilating duct that SVG outdoor is connected with SVG indoor; Described ventilating duct comprises outdoor vertical sub-channel, indoor vertical sub-channel and communicating Outdoor vertical sub-channels, horizontal sub-channels of indoor vertical sub-channels; it is characterized in that: the SVG cooling and ventilation system switching device also includes a switching channel parallel to the outdoor vertical sub-channels, and the switching channels include horizontal baffles, fixed baffles plate and a movable baffle, the movable baffle can move upwards or downwards, when the movable baffle moves up to the limit position, it abuts against the top wall of the horizontal sub-channel, and when it moves down to the limit position, it meets the level of the switching channel The baffles are offset; when the moving baffle is downwards against the horizontal baffle, the outdoor vertical sub-channel and the indoor vertical sub-channel are connected through the horizontal sub-channel, the indoor and the outdoor are connected, and the SVG room is in the external circulation mode ; When the movable baffle upwardly resists the top wall of the horizontal sub-channel, the room is isolated from the outdoor, and the outdoor returns to the external environment by switching channels, and the room is in the internal circulation mode; when the movable baffle is in the middle position, the upper When it does not touch the top wall of the horizontal sub-channel and the bottom does not touch the horizontal baffle, the indoor and outdoor are in a semi-circular working mode. 2. The switching device of the SVG cooling and ventilation system according to claim 1, characterized in that: the movable baffle is movably arranged on the wall of the SVG room, and the middle of the wall is provided to make the movable baffle up and down. The moving chute, the moving baffle is slidably clamped in the chute, the inner side of the wall is provided with an electric push rod, the moving baffle is provided with an upper fixing seat, and the ground of the SVG room is provided There is a lower fixing seat, the electric push rod is hinged with the upper fixing seat, and the lower is hinged with the lower fixing seat. 3. The SVG cooling and ventilation system switching device according to claim 2, characterized in that: the electric push rod is equipped with a servo motor, and the SVG chamber is provided with a temperature sensor, a temperature controller and an electrical control for controlling the operation of the servo motor The temperature sensor is electrically connected to the temperature controller, and the temperature controller is electrically connected to the electric control box to control the opening or closing of the servo motor.