CN216626288U - A sealed explosion-proof electrical cabinet - Google Patents

Abstract

The utility model discloses a sealed explosion-proof electrical cabinet, which comprises a cabinet body (1) and a pressure relief device (2) arranged at the top end of the cabinet body (1), and is characterized in that the pressure relief device (2) comprises a pressure relief opening (3) arranged at the top of the cabinet body (1), a pressure relief cylinder (13) arranged at the top of the cabinet body (1), and an upper cover (9) movably buckled at the upper end of the pressure relief cylinder (13). This real 7 lid wall lower extreme with novel upper cover is less than the pressure release hole to the pressure release hole keeps away from the one end downward sloping at pressure release section of thick bamboo center, can effectually prevent that the rainwater from entering into a pressure release section of thick bamboo, and then enters into the cabinet internally. The utility model is provided with the sealing plate, and the sealing plate can prevent external mosquitoes from entering the pressure relief cylinder from the pressure relief hole and then entering the cabinet body from the pressure relief cylinder.

Description

A sealed explosion-proof electrical cabinet

technical field

The utility model relates to the technical field of electrical cabinets, in particular to a sealed explosion-proof electrical cabinet.

Background technique

The explosion-proof electrical cabinet is a low-voltage power distribution device assembled by assembling switchgear, measuring instruments, protective appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on the screen according to the electrical wiring requirements. Explosion-proof electrical cabinets usually have a pressure relief function to prevent explosions caused by excessive air pressure in the cabinet, but traditional explosion-proof electrical cabinets do not have good waterproof function, and external mosquitoes are also easy to enter the cabinet during use, affecting the cabinet. normal operation of internal devices.

Utility model content

The purpose of the utility model is to solve the above problems, and to provide a sealed explosion-proof electrical cabinet with a pressure relief function and a good waterproof function.

The purpose of the utility model is achieved through the following technical solutions: a sealed explosion-proof electrical cabinet, comprising a cabinet body, a pressure relief device arranged on the top of the cabinet body, the pressure relief device comprising a pressure relief port opened on the top of the cabinet body, The pressure relief cylinder arranged on the top of the cabinet is movably buckled on the upper cover of the upper end of the pressure relief cylinder; the pressure relief port is located inside the pressure relief cylinder, and the upper cover has a cover wall extending downward, and the cover wall is connected with the pressure relief cylinder. A pressure relief channel is formed between the side walls of the pressure relief cylinder, the side wall of the pressure relief cylinder is provided with a pressure relief hole, and the lower end of the cover wall of the upper cover is lower than the pressure relief hole; the end of the pressure relief hole away from the center of the pressure relief barrel Tilt down.

The acute angle formed between the pressure relief hole and the horizontal plane is 15 degrees.

The pressure relief device further includes two upper cover limiting mechanisms arranged opposite to the upper end of the pressure relief cylinder, and is connected to the upper cover plates at the upper ends of the two upper cover limiting mechanisms.

The upper cover limiting mechanism includes an upper cover limiting rod whose lower end is fixed on the upper end of the pressure relief cylinder, and whose upper end penetrates the upper cover and is fixedly connected with the upper cover plate, is sleeved on the upper cover limiting rod and is located between the upper cover plate and the upper cover plate. A compression spring between the covers; the upper cover can move up and down along the upper cover limit rod.

The upper end of the pressure relief cylinder is provided with a concave platform, the concave platform is communicated with the pressure relief channel, and the upper cover limit rod is fixed on the concave platform.

The pressure relief device also includes a sealing plate covered on the pressure relief port, and a sealing plate limit rod whose upper end is fixed on the upper cover; the lower end of the sealing plate limit rod passes through the sealing plate, and the sealing plate can be The sealing plate limit rod moves up and down, and the pressure relief port can be opened when the sealing plate moves up.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The lower end of the cover wall of the upper cover of the utility model is lower than the pressure relief hole, and the end of the pressure relief hole away from the center of the pressure relief cylinder is inclined downward, which can effectively prevent rainwater from entering the pressure relief cylinder and then into the cabinet.

(2) The utility model is provided with a sealing plate, which can prevent external mosquitoes from entering the pressure relief cylinder from the pressure relief hole, and then into the cabinet from the pressure relief cylinder.

Description of drawings

FIG. 1 is a cross-sectional view of the utility model.

2 is a cross-sectional view of the pressure relief device of the present invention.

FIG. 3 is an enlarged view of A in FIG. 2 .

The reference signs in the above drawings are: 1—cabinet body, 2—pressure relief device, 3—pressure relief port, 4—compression spring, 5—sealing plate limit rod, 6—sealing plate, 7—pressure relief hole , 8—upper cover, 9—upper cover, 10

—Limiting rod for upper cover, 11—pressure relief channel, 12—concave platform, 13—pressure relief cylinder.

Detailed ways

The present utility model will be further described in detail below with reference to the examples, but the embodiments of the present utility model are not limited thereto.

Example 1

As shown in FIG. 1 , the utility model discloses a sealed explosion-proof electrical cabinet, which includes a cabinet body 1 and a pressure relief device 2 arranged at the top of the cabinet body 1 . Specifically, as shown in FIG. 2 , the pressure relief device 2 includes a pressure relief port 3 opened on the top of the cabinet 1 , a pressure relief cylinder 13 arranged on the top of the cabinet 1 , and a pressure relief cylinder 13 movably buckled on the upper end of the pressure relief cylinder 13 . Cover 9. The pressure relief port 3 is located inside the pressure relief cylinder 13 , that is, the pressure relief cylinder 13 encloses the pressure relief port 3 therein.

The upper cover 9 has a cover wall extending downward, and a pressure relief channel 11 is formed between the cover wall and the outer side wall of the pressure relief cylinder 13. The side wall of the pressure relief cylinder 13 is provided with a pressure relief hole 7. The lower end of the cover wall of 9 is lower than the pressure relief hole 7 , so that the inside of the pressure relief cylinder 13 communicates with the pressure relief passage 11 through the pressure relief hole 7 .

In this embodiment, the end of the pressure relief hole 7 away from the center of the pressure relief cylinder 13 is inclined downward, so rainwater cannot enter the pressure relief cylinder 13 through the pressure relief hole 7, thereby improving the rainproof performance of the electrical cabinet.

In this embodiment, the acute angle formed between the pressure relief hole 7 and the horizontal plane is 15 degrees, which not only prevents rainwater from reaching the pressure relief cylinder 13 , but also does not affect the exhaust of the pressure relief hole 7 .

When in use, the gas in the electrical cabinet enters the pressure relief cylinder 13 from the pressure relief port 3 , and then is discharged from the pressure relief hole 7 . If the air pressure in the cabinet rises sharply, the air pressure can open the upper cover 9 to improve the exhaust efficiency.

Example 2

On the basis of Embodiment 1, the pressure relief device 2 of this embodiment further includes two upper cover limiting mechanisms disposed opposite to the upper end of the pressure relief cylinder 13, and an upper cover plate 8 connected to the upper ends of the two upper cover limiting mechanisms.

Specifically, the upper cover limiting mechanism includes an upper cover limiting rod 10 whose lower end is fixed on the upper end of the pressure relief cylinder 13 , and whose upper end penetrates the upper cover 9 and is fixedly connected to the upper cover plate 8 , and is sleeved on the upper cover limiting rod 10 And the compression spring 4 is located between the upper cover plate 8 and the upper cover 9 . The upper cover 9 can move up and down along the upper cover limiting rod 10 .

Due to the clearance fit between the upper cover limit rod 10 and the upper cover 9, rainwater may flow down along the upper cover limit rod 0 and enter the pressure relief cylinder 13. In order to prevent this from happening, see Figure 3 As shown, the upper end of the pressure relief cylinder 13 is provided with a concave platform 12 , the concave platform 12 communicates with the pressure relief channel 11 , and the upper cover limit rod 10 is fixed on the concave platform 12 . In this way, if the rainwater flows down along the upper cover limit rod 10 , it will flow to the side of the pressure relief passage 11 to prevent the rainwater from entering the pressure relief cylinder 13 .

When the air pressure rises sharply, the upper cover 9 is pressed upwards to open, and the air pressure can be discharged from the cabinet 1. After the air pressure falls, under the action of the compression spring 4 and its own gravity, the upper cover 9 is re-covered to the pressure relief cylinder 13.

Example 3

This embodiment is basically the same as Embodiment 1 or 2. The difference lies in that the pressure relief device 2 in this embodiment further includes a sealing plate 6 that is covered on the pressure relief port 3, and a sealing plate 6 whose upper end is fixed on the upper cover 9. plate limit rod 5; the lower end of the seal plate limit rod 5 passes through the seal plate 6, the seal plate 6 can move up and down along the seal plate limit rod 5, and the pressure relief port can be opened when the seal plate 6 moves upward 3.

When the air pressure in the cabinet 1 rises to a certain level, the air pressure top opens the pressure relief port 3, and the gas enters the pressure relief cylinder 13 and is discharged to the outside of the cabinet 1. After the air pressure drops, the sealing plate 6 is re-covered on the pressure relief cylinder 13. on mouth 3. By arranging the sealing plate 6 , the probability of external mosquitoes entering the inside of the cabinet 1 can be reduced, and the function of protecting the internal devices can be achieved.

The above embodiments describe the preferred embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, the technical solutions of the present invention can be Carry out a variety of simple modifications, these simple modifications all belong to the protection scope of the present utility model, as long as it does not violate the idea of the present utility model, it should also be regarded as the content protected by the present utility model.

As described above, the present invention can be well realized.

Claims (6)

1. A sealed explosion-proof electrical cabinet, comprising a cabinet body (1), a pressure relief device (2) arranged at the top of the cabinet body (1), characterized in that the pressure relief device (2) comprises a pressure relief device (2) provided in the cabinet body (1) The pressure relief port (3) at the top, the pressure relief cylinder (13) arranged on the top of the cabinet (1), and the upper cover (9) movably buckled on the upper end of the pressure relief cylinder (13); the pressure relief cylinder (13) The port (3) is located inside the pressure relief cylinder (13), the upper cover (9) has a cover wall extending downward, and a pressure relief channel (11) is formed between the cover wall and the side wall of the pressure relief cylinder (13), The side wall of the pressure relief cylinder (13) is provided with a pressure relief hole (7), and the lower end of the cover wall of the upper cover (9) is lower than the pressure relief hole (7); the pressure relief hole (7) is away from the pressure relief hole (7) One end of the center of the barrel (13) is inclined downward. 2 . The sealed explosion-proof electrical cabinet according to claim 1 , wherein the acute angle formed between the pressure relief hole ( 7 ) and the horizontal plane is 15 degrees. 3 . 3. A sealed explosion-proof electrical cabinet according to claim 1 or 2, characterized in that, the pressure relief device (2) further comprises two upper cover limit positions oppositely arranged on the upper end of the pressure relief cylinder (13) The mechanism is connected to the upper cover plates (8) at the upper ends of the two upper cover limiting mechanisms. 4. A sealed explosion-proof electrical cabinet according to claim 3, characterized in that the upper cover limiting mechanism comprises a lower end fixed to the upper end of the pressure relief cylinder (13), and the upper end passing through the upper cover (9) and connecting with the upper end. An upper cover limit rod (10) fixedly connected to the cover plate (8), a compression spring (4) sleeved on the upper cover limit rod (10) and located between the upper cover plate (8) and the upper cover (9) ); the upper cover (9) can move up and down along the upper cover limit rod (10). 5 . The sealed explosion-proof electrical cabinet according to claim 4 , wherein the upper end of the pressure relief cylinder ( 13 ) is provided with a concave platform ( 12 ), and the concave platform ( 12 ) is connected to the pressure relief channel. 6 . (11) is connected, and the upper cover limiting rod (10) is fixed on the concave platform (12). 6. A sealed explosion-proof electrical cabinet according to claim 1, characterized in that the pressure relief device (2) further comprises a sealing plate (6) covered on the pressure relief port (3), the upper end of which is fixed The sealing plate limit rod (5) on the upper cover (9); the lower end of the sealing plate limit rod (5) passes through the sealing plate (6), and the sealing plate (6) can limit the position along the sealing plate The rod (5) moves up and down, and the pressure relief port (3) can be opened when the sealing plate (6) moves up.

Images