CN204696522U - A kind of high-tension switch cabinet air intake passage device - Google Patents

Abstract

A high-voltage switchgear air inlet channel device, including a switchgear, the lower part of the front lower door of the switchgear is provided with horizontally arranged louver holes, and the switchgear is provided with interconnected front and lower cabinet steel plates and busbar chambers with grooved holes The upper part of the cabinet steel plate, the two sides of the upper part of the cabinet steel plate in the front and lower chambers are the circuit breaker room and the busbar room; The top of the busbar room is equipped with an exhaust fan on the upper part of the busbar room. It is characterized in that: the switchgear air inlet channel device is installed in the front and lower chambers. , air intake channel steel plate, and air intake fan; it can achieve good filtered air intake and directional air supply in the switch cabinet. It makes the high-voltage switch cabinet dust-proof and has good air intake and ventilation effects, thereby better reducing the temperature rise of the high-voltage switch cabinet.

Description

A high-voltage switch cabinet air inlet channel device

technical field

The utility model relates to a high-voltage switch cabinet.

Background technique

The typical structure of a 10kV high-voltage switchgear is composed of a busbar room, a circuit breaker room, an instrument room, and a down-conductor room; in order to meet the requirements of the protection level IP4X, it is basically designed with a metal fully enclosed shell; while the protection level is high There will be poor heat dissipation and high temperature. At present, the high-voltage switchgear adopts fans for forced convection cooling, which is an effective cooling measure for switchgears; forced convection cooling includes two methods: "air supply" and "extraction". If only the form of "drawing air" is used for forced air cooling, since the cabinet body is basically a fully enclosed shell, the outside air can only enter from the gaps in the cabinet body, resulting in poor air intake. If the "air supply" method is adopted, if the air supply fan is directly installed on the outer wall of the switch cabinet without filtering treatment, it will easily cause dust accumulation in the equipment in the cabinet, which will increase the contact resistance and cause pollution flashover accidents.

Utility model content

In order to overcome the problems of the existing high-voltage switchgear with excessive temperature rise, poor air intake, and dust accumulation in the cabinet caused by the air supply fan, the utility model provides an air inlet channel for the high-voltage switchgear, so that the switchgear has a good air intake , The ventilation effect can reduce the temperature rise of the high-voltage switch cabinet while reducing the dust accumulation in the cabinet caused by the air supply fan. The technical scheme of the utility model is:

A high-voltage switchgear air inlet channel device, including a switchgear, the lower part of the front lower door of the switchgear is provided with horizontally arranged louver holes, and the switchgear is provided with interconnected front and lower cabinet steel plates and busbar chambers with grooved holes The upper part of the cabinet steel plate, the two sides of the upper part of the front and lower cabinet steel plates are respectively the circuit breaker room and the busbar room; the bottom of the circuit breaker room is equipped with a fan at the bottom of the circuit breaker room, and the top is equipped with an exhaust fan at the upper part of the circuit breaker room, and the busbar room The top of the busbar room is equipped with an exhaust fan on the upper part of the busbar room. It is characterized in that: the switchgear air inlet channel device is installed in the front and lower chambers. , Air intake channel steel plate, air intake fan. The air inlet channel mounting bracket is divided into left and right parts, the left half is in an inverted "U" shape, the top surface of the right half is inclined downward, and the top surface of the right half is installed with an air inlet channel steel plate, and two air inlet fans are installed on the inlet On the steel plate of the air channel; the left half of the air inlet channel mounting bracket includes two vertically arranged and parallel upright frames, and the first-level metal filter screen and the second-level metal filter screen are respectively installed on the corresponding upright frames from left to right. A separate first air intake channel space is formed between the primary metal filter and the secondary metal filter, the second air intake channel space is formed on the underside of the steel plate of the air intake channel, and the air intake fan is installed on the top of the second air intake channel space .

The air inlet fan outlet angle and the horizontal angle are 50~80°.

The included angle between the air inlet fan outlet angle and the horizontal is 60°.

There is a distance between the air intake fan and the steel plate of the front lower room cabinet.

The utility model carries out the opening of the cabinet body and the installation of the air inlet passage in the front and lower chambers of the high-voltage switch cabinet. Drill louver holes at the lower part of the front lower door. Use bolts to fix the air inlet channel bracket on the cabinet, place the metal filter in the slot of the bracket so that the position of the metal filter corresponds to the position of the louver hole; use bolts to fix the steel plate of the air inlet channel that opens the hole and installs the fan on the bracket ; Make the metal filter screen, the steel plate of the air inlet channel, and the switch cabinet body connected and fixed by the bracket to form an independent channel space. When the fan on the steel plate of the air inlet channel is turned on, the air enters the switch cabinet from the louver hole due to the suction force, then enters the channel after passing through the metal filter screen, and is finally blown out by the fan. The opening of the fan on the air inlet channel makes the switchgear have good air intake and ventilation conditions; and because of the filtering effect of the channel, it can reduce the dust accumulation in the cabinet caused by the fan, and achieve better cooling of the high-voltage switchgear.

It enables good filtered air intake and directional air supply in the switchgear. It makes the high-voltage switch cabinet dust-proof and has good air intake and ventilation effects, thereby better reducing the temperature rise of the high-voltage switch cabinet. Realize good filtered air intake and directional air supply in the switchgear. The structure is simple, the cost is low, and the field practicality is strong.

The beneficial effects of the utility model are:

(1) This device makes the high-voltage switchgear have good air intake and ventilation conditions, and achieves a better cooling effect for the high-voltage switchgear.

(2) This device has the function of filtering the incoming air, which can reduce the dust accumulation in the high-voltage switch cabinet caused by the air supply fan.

(3) The device can supply air in a directional way, so that the incoming air flow can be blown into the high-voltage switchgear in a certain direction.

(4) The device has the advantages of simple structure, low cost, convenient production and installation, and strong practicability.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of a high-voltage switch cabinet of the present invention;

Fig. 2 is a three-dimensional schematic diagram of the internal structure of the high-voltage switchgear;

Fig. 3 is an enlarged view of the louver hole in Fig. 1;

Fig. 4 is a structural schematic diagram of the air inlet channel device of the switch cabinet.

In the figure: a Ventilation louver hole at the lower part of the front lower door of the switch cabinet, b Air intake channel device of the switch cabinet, c Steel plate of the cabinet body in the front lower room (with grooved holes), d Fan at the bottom of the circuit breaker room, e Circuit breaker room, f Cabinet steel plate at the busbar room (with grooved holes), g Busbar room, h Upper exhaust fan in the circuit breaker room, i Upper exhaust fan in the busbar room, j Wind direction mark; 1 Air inlet channel mounting bracket, 2 Primary metal filter Net, 3 secondary metal filter, 4 steel plate for air intake channel, 5 air intake fan.

Detailed ways

As shown in Figures 1, 2, and 3, the utility model includes a switchgear, and the lower part of the front lower door of the switchgear is provided with a horizontally arranged louver hole a, so that it has good dustproof, waterproof, and ventilation functions. The switchgear is equipped with interconnected front and lower cabinet steel plate c with grooved holes and cabinet steel plate f at the busbar room. The two sides of the upper part of the front and lower cabinet steel plate c are circuit breaker room e and The busbar room g; the bottom of the circuit breaker room e is equipped with the bottom fan d of the circuit breaker room, the top is equipped with the upper exhaust fan h of the circuit breaker room, and the top of the bus room g is equipped with the upper exhaust fan i of the bus room.

Install the switch cabinet air inlet channel device b in the front and lower chambers. As shown in FIG. 4 , the switch cabinet air inlet channel device b includes an air inlet channel mounting bracket 1 , a primary metal filter screen 2 , a secondary metal filter screen 3 , an air intake channel steel plate 4 , and an air intake fan 5 . The air inlet channel mounting bracket 1 is divided into two parts, the left half is inverted U-shaped, the top surface of the right half part is inclined downward, and the air inlet channel steel plate 4 is installed on the top surface of the right half part, and two air inlet fans 5 are installed on On the air inlet passage steel plate 4. The left half part includes two vertically arranged and parallel upright frames 6 , and the primary metal filter screen 2 and the secondary metal filter screen 3 are respectively installed on the corresponding upright frames 6 from left to right. A separate first air intake channel space 7 is formed between the primary metal filter screen 2 and the secondary metal filter screen 3 , and the second air intake channel space 8 is formed on the underside of the steel plate 4 of the air intake channel. The air intake fan 5 is installed on the top of the second air intake channel space 8 . The air inlet fan 5 outlet angle and the horizontal angle are 60 °, and the inlet fan 5 has a certain suitable distance from the steel plate c of the front and lower chamber cabinet.

The installation bracket 1 is formed by pressing the steel plate with the same material as the switchgear cabinet, and a U-shaped groove is made at the position of the first-level metal filter 2 and the second-level metal filter 3 to place the filter. The U-shaped groove can make the filter convenient. Easy installation, uninstallation, cleaning and replacement.

Fix the prepared installation bracket 1 on the steel plate of the front and lower cabinet with bolts, and then place each metal filter screen in the corresponding U-shaped groove of the installation bracket 1, so that the first-level metal filter screen 2 and the lower part of the front lower door corresponding to the position of the louver hole a. The metal filter screen can use cheap primary metal filters on the market, generally aluminum mesh, stainless steel textile mesh, easy to clean and reusable. The first-level metal filter 2 adopts a thinner primary metal filter with general dust removal ability, and the second-level metal filter 3 adopts a slightly thicker primary metal filter with better dust removal ability; the thinner first-level metal filter 2. It has a better ventilation effect so that the air can smoothly enter the air inlet channel at the louver hole a. The thicker secondary metal filter screen has a better dust removal effect, and here it is close to the air intake fan 5, which will not cause the problem of poor ventilation. Then fix the air inlet channel steel plate 4 with two air inlet fans 5 on the installation bracket 1 with bolts; make the air inlet channel steel plate 4 closely connected with the installation bracket 1 and the steel plate of the front and lower cabinet without any large gap , so as to form an independent air intake channel space together with the first-level metal filter screen 2 and the second-level metal filter screen 3, and realize the filtered air intake through the exhaust effect of the air intake fan 5. At the position of the air inlet fan 5 of the air inlet channel steel plate 4, the inclined angle of the fan outlet and the horizontal line is 60°. Two exhaust fans are installed at the outlet end of the air inlet channel, and the angle between the air outlet and the horizontal is 60°. And the air intake fan 5 has a certain proper distance from the steel plate c of the cabinet body. A certain angled air flow is blown from the air inlet channel, and part of it passes through the cabinet steel plate c with grooved holes to reach the bottom of the busbar room g; the other part of the blown air flow flows to the circuit breaker due to the blocking effect of the cabinet steel plate c The fan d at the lower part of the chamber; so as to realize the function of the air inlet passage filtering the incoming air and directional air supply.

The above-mentioned specific embodiments are used to illustrate the utility model, rather than to limit the utility model. Within the spirit of the utility model and the scope of protection of the claims, any modifications and changes made to the utility model fall within the scope of the utility model. protected range.

Claims (4)

1. a high-tension switch cabinet air intake passage device, comprise switch cubicle, horizontal blinds hole is offered in bottom, switch cubicle front Xiamen, be provided with the interconnective front lower room cabinet steel plate with grooved hole and bus-bar room place cabinet steel plate in switch cubicle, the both sides of the top part of front lower room cabinet steel plate are respectively breaker chamber and bus-bar room; Fan bottom breaker chamber is provided with bottom breaker chamber, top is provided with breaker chamber top extractor fan, the top of bus-bar room is provided with bus-bar room top extractor fan, it is characterized in that: install switch cubicle air intake passage device in front lower room, switch cubicle air intake passage device comprises air intake passage mounting bracket, one-level metal filter screen, secondary metal filter screen, air intake passage steel plate, air inlet fan; Air intake passage mounting bracket is divided into left and right two parts, and left-half is for falling " U " shape, and the end face of right half part is downward-sloping, and the end face of right half part installs air intake passage steel plate, and two air inlet fan are arranged on air intake passage steel plate; The left-half of air intake passage mounting bracket comprises two and vertically arranges and parallel vertical frame, one-level metal filter screen, secondary metal filter screen are from left to right arranged on corresponding vertical frame respectively, the first independent air intake passage space is formed between one-level metal filter screen, secondary metal filter screen, form the second air intake passage space on the downside of air intake passage steel plate, air inlet fan is arranged on the top in the second air intake passage space.

2. high-tension switch cabinet air intake passage device according to claim 1, is characterized in that: air inlet fan air outlet angle and horizontal sextant angle are 50 ~ 80 °.

3. high-tension switch cabinet air intake passage device according to claim 2, is characterized in that: air inlet fan air outlet angle and horizontal sextant angle are 60 °.

4. the high-tension switch cabinet air intake passage device according to claim 1 or 2 or 3, is characterized in that: be provided with spacing between air inlet fan and front lower room cabinet steel plate.