Quick door opening device of high-voltage explosion-proof switch

Abstract

The utility model relates to the technical field of explosion-proof switches, and discloses a high-voltage explosion-proof switch quick door opening device which comprises a switch cabinet composed of a cabinet body and a cabinet door, a sealing groove is formed in the front side wall face of the cabinet body of the switch cabinet, and a sealing block is fixedly installed at the corresponding cabinet door of the switch cabinet. A sealing groove is formed in the side wall of the switch cabinet, an inflatable sealing air bag is fixedly installed in the sealing groove, a pressing inflation valve is further fixedly installed in the side wall of the switch cabinet, the pressing inflation valve is communicated with the sealing air bag, and a driving part for repeatedly pressing the pressing inflation valve is further arranged in the switch cabinet. According to the utility model, the push block pushes the pressing plate to press down the pressing inflation valve, the pressing inflation valve inflates the sealing air bag in the continuous pressing process, and the inflated sealing air bag fills the gap between the sealing groove and the sealing block in the sealing groove, so that the sealing performance of the switch cabinet is enhanced; at the moment, air in the sealed air bag can be exhausted from the ventilation hole through the ventilation block.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof switches, in particular to a high-voltage explosion-proof switch quick-opening device. Background Art

[0002] High-voltage explosion-proof switchgear is widely used in hazardous environments such as petrochemicals, coal mines, and tunnels to control the operation of high-voltage electrical equipment. To ensure the safety and stability of equipment operation, explosion-proof switchgear must have excellent sealing properties to prevent the ingress of flammable and explosive gases from the outside, thereby avoiding the risk of explosions caused by electrical sparks or equipment failures. Therefore, the sealing design between the cabinet door and the cabinet body has become a critical component of the explosion-proof switchgear structure.

[0003] Traditional high-voltage explosion-proof switchgear primarily relies on mechanical locking systems and sealing strips to achieve a seal between the cabinet door and the cabinet body. However, this design has several drawbacks. First, over time, the sealing strips may lose their original sealing effectiveness due to aging or wear, resulting in a degraded seal between the cabinet interior and the external environment. Furthermore, in high-pressure or high-impact environments, the sealing performance of the mechanical locking system may not be sufficient to withstand complex operating conditions, posing the risk of air leakage or seal failure.

[0004] To this end, we propose a high-voltage explosion-proof switch quick-opening device. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a high-voltage explosion-proof switch quick-opening device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-voltage explosion-proof switch quick-opening device, comprising a switch cabinet consisting of a cabinet body and a cabinet door, a sealing groove being provided on the front wall of the cabinet body of the switch cabinet, and a sealing block being fixedly installed on the cabinet door of the corresponding switch cabinet, an inflatable sealing airbag being fixedly installed in the sealing groove, a press-inflating valve being fixedly installed in the side wall of the switch cabinet, the press-inflating valve being communicated with the sealing airbag, and a driving part for repeatedly pressing the press-inflating valve being also provided in the switch cabinet.

[0007] Preferably, the driving part includes a rotating drum movably mounted on the side wall of the switch cabinet, and the rotating drum is integrally formed with a protrusion at a position corresponding to the position below the push-inflating valve. The switch cabinet is also movably mounted with a connecting rod that can slide up and down on the side corresponding to the push-inflating valve, and the end of the connecting rod is in close contact with the rotating drum. When the connecting rod is close to the position of the push-inflating valve, a push block is fixedly mounted thereon, and the end of the push block close to the push-inflating valve is an inclined surface, and a pressure plate is provided on the end face of the push-inflating valve close to the connecting rod. The pressure plate is a short circular rod and the side wall of the pressure plate extends radially to form a flange, and a return spring is fixedly mounted on the flange.

[0008] Preferably, the front ends of the sealing blocks converge toward the center.

[0009] Preferably, the rotating drum is located in the middle of the switch cabinet, and connecting rods are provided on opposite sides of the upper and lower ends of the rotating drum.

[0010] Preferably, the rotating drum is arranged at an end of the switch cabinet, and the connecting rod is located between the rotating drum and the other end of the switch cabinet.

[0011] Preferably, the rotating drum extends to the outside of the switch cabinet and is fixedly provided with a handle.

[0012] Preferably, a locking rod is axially movably installed in the middle of the rotating drum, and the locking rod passes through the rotating drum and extends into the sealing groove. The sealing block is integrally formed with a locking block corresponding to the position of the locking rod, and the side wall of the locking block is provided with a locking hole that can accommodate the locking rod.

[0013] Preferably, a ventilation block is fixedly installed at the position of the locking block in the sealing groove, the ventilation block is communicated with the sealing airbag, the ventilation block is a hard shell, and a ventilation hole is opened on the front end surface of the ventilation block, and the ventilation hole is communicated with the inside of the ventilation block.

[0014] Beneficial effects

[0015] The utility model provides a high-voltage explosion-proof switch quick-opening device. It has the following beneficial effects:

[0016] The high-voltage explosion-proof switch quick-opening device closes the switch cabinet door. At this time, the sealing block is inserted into the sealing groove, and then the locking rod is pressed to cooperate with the lock hole on the locking block to lock the switch cabinet. Then the handle starts to be rotated, and the handle drives the protrusion to rotate in the switch cabinet. During the rotation of the protrusion, the connecting rod is continuously pushed up and down. When the connecting rod moves up and down, the push block pushes the pressure plate to press the inflation valve. The inflation valve inflates the sealing airbag during the continuous pressing process. The inflated sealing airbag fills the gap between the sealing groove and the sealing block in the sealing groove, thereby enhancing the sealing of the switch cabinet. When the cabinet door is opened, the locking block leaves the ventilation hole. At this time, the air in the sealing airbag can be discharged from the ventilation hole through the ventilation block.

[0017] The airbag inflates when the door is closed, tightly filling the gap between the door and the cabinet body, creating a more efficient and durable seal. When the door is opened, the airbag deflates and contracts, facilitating opening and closing. This seal enhancement technology, achieved through inflatable airbags, not only improves the sealing performance of explosion-proof switchgear, but also extends the service life of the sealing system, reduces maintenance requirements, and enhances overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the sealing structure of the utility model;

[0022] Figure 3 This is a side view of the sealing structure of the utility model;

[0023] Figure 4 This is a three-dimensional diagram of the driving part of the sealing structure of the utility model.

[0024] Legend:

[0025] 1. Switch cabinet; 2. Sealing groove; 3. Sealing block; 4. Sealing airbag; 5. Press-type inflation valve; 6. Connecting rod; 7. Push block; 8. Pressure plate; 9. Return spring; 10. Rotating drum; 11. Bump; 12. Handle; 13. Locking rod; 14. Locking block; 15. Locking hole; 16. Ventilation block; 17. Ventilation hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] High voltage explosion proof switch quick opening device, such as Figure 1-Figure 4As shown, the switch cabinet 1 includes a switch cabinet 1, which consists of a cabinet body and a cabinet door. A high-voltage explosion-proof switch is arranged in the switch cabinet 1. A sealing groove 2 is provided on the front wall of the cabinet body of the switch cabinet 1, and a sealing block 3 is fixedly installed on the cabinet door of the corresponding switch cabinet 1, wherein an inflatable sealing airbag 4 is fixedly installed in the sealing groove 2, and a press-on inflation valve 5 is also fixedly installed in the side wall of the switch cabinet 1. The press-on inflation valve 5 is communicated with the sealing airbag 4, and the press-on inflation valve 5 inflates the sealing airbag 4 by repeatedly pressing the press-on inflation valve 5 to improve the sealing degree of the cabinet body. The press-on inflation valve 5 is an existing structure and will not be described in detail here. The switch cabinet 1 is also provided with a driving part for driving the press-on inflation valve 5 to press repeatedly.

[0028] Furthermore, the driving part includes a rotating drum 10 movably mounted on the side wall of the switch cabinet 1. The rotating drum 10 is integrally formed with a protrusion 11 corresponding to the position below the pressing inflation valve 5. The protrusion 11 protrudes outward. The switch cabinet 1 is also movably mounted with a connecting rod 6 that can slide up and down on the side corresponding to the pressing inflation valve 5. The end of the connecting rod 6 is in close contact with the rotating drum 10. When the rotating drum 10 rotates until the protrusion 11 contacts the connecting rod 6, the connecting rod 6 is driven to slide up and down. A push block 7 is fixedly mounted on the connecting rod 6 near the position of the pressing inflation valve 5. The end of block 7 close to the push-inflating valve 5 is an inclined surface, and a pressure plate 8 is provided on the end surface of the push-inflating valve 5 close to the connecting rod 6. The pressure plate 8 is a short circular rod and the side wall of the pressure plate 8 extends radially to form a flange. A return spring 9 is fixedly installed at the flange. The return spring 9 is an elastic spring. When the connecting rod 6 moves up and down, the inclined surface of the push block 7 squeezes the pressure plate 8, so that the pressure plate 8 is pressed down to drive the push-inflating valve 5 to inflate the sealed airbag 4. By continuously rotating the drum 10, the push-inflating valve 5 is reciprocated and inflated to improve the sealing degree.

[0029] In this embodiment, the front end of the sealing block 3 is gathered toward the center, which is convenient for insertion into the sealing groove 2 when closing, and is also beneficial for the expansion and filling of the sealing airbag 4 to increase the sealing degree.

[0030] In this embodiment, the rotating drum 10 is located in the middle of the switch cabinet 1, and connecting rods 6 are provided on opposite sides of the upper and lower ends of the rotating drum 10. In other embodiments, the rotating drum 10 is located at the ends of the switch cabinet 1, and only one set of connecting rods 6 is provided. Providing two sets of connecting rods 6 on opposite sides can fully utilize the protrusions 11, because each rotation of the protrusions 11 can push the connecting rods 6 at the upper and lower ends respectively. In contrast, if the rotating drum 10 is located at the ends of the switch cabinet 1, the protrusions 11 can only push the connecting rods 6 once per rotation.

[0031] Furthermore, the drum 10 extends to the outside of the switch cabinet 1 and is fixedly provided with a handle 12 for convenient operation of rotating the drum 10 .

[0032] Furthermore, a locking rod 13 is axially movably installed in the middle of the rotating drum 10. The locking rod 13 passes through the rotating drum 10 and extends into the sealing groove 2. The sealing block 3 is integrally formed with a locking block 14 corresponding to the position of the locking rod 13. The side wall of the locking block 14 is provided with a locking hole 15 that can accommodate the locking rod 13. When the cabinet door of the switch cabinet 1 is closed, the locking rod 13 is pressed, and the locking rod 13 is inserted into the locking hole 15 of the locking block 14 to lock the cabinet door. At this time, the handle 12 is rotated to further seal the cabinet door.

[0033] In particular, a ventilation block 16 is fixedly installed at the position corresponding to the locking block 14 in the sealing groove 2. The ventilation block 16 is communicated with the sealing airbag 4, and the ventilation block 16 is a hard shell. A ventilation hole 17 is opened on the front end surface of the ventilation block 16. The ventilation hole 17 is communicated with the inside of the ventilation block 16. When the cabinet door of the switch cabinet 1 is closed, the locking block 14 blocks the ventilation hole 17, and air is inflated in the sealing airbag 4 at this time. When the switch cabinet 1 is opened, the locking block 14 no longer seals the ventilation hole 17, so that the air in the sealing airbag 4 is discharged.

[0034] The working principle of the present utility model is as follows: the cabinet door of the switch cabinet 1 is closed, and the sealing block 3 is inserted into the sealing groove 2 at this time. Then the locking rod 13 is pressed and cooperates with the lock hole 15 on the locking block 14 to lock the switch cabinet 1. Then the handle 12 is started to be rotated. The handle 12 drives the protrusion 11 to rotate in the switch cabinet 1. During the rotation of the protrusion 11, the connecting rod 6 is continuously pushed up and down. When the connecting rod 6 moves up and down, the pushing block 7 pushes the pressure plate 8 to press the inflation valve 5. The inflation valve 5 is inflated into the sealing airbag 4 during the continuous pressing process. The inflated sealing airbag 4 fills the gap between the sealing groove 2 and the sealing block 3 in the sealing groove 2, thereby enhancing the sealing of the switch cabinet 1. When the cabinet door is opened, the locking block 14 leaves the ventilation hole 17. At this time, the air in the sealing airbag 4 can be discharged from the ventilation hole 17 through the ventilation block 16.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage explosion-proof switch quick-opening device, comprising a switch cabinet (1) consisting of a cabinet body and a cabinet door, characterized in that: A sealing groove (2) is provided on the front side wall of the switch cabinet (1), and a sealing block (3) is fixedly installed on the cabinet door of the corresponding switch cabinet (1). An inflatable sealing airbag (4) is fixedly installed in the sealing groove (2). A press-on inflation valve (5) is also fixedly installed in the side wall of the switch cabinet (1), and the press-on inflation valve (5) is in communication with the sealing airbag (4). A driving unit for repeatedly pressing the press-on inflation valve (5) is also provided in the switch cabinet (1).

2. The high-voltage explosion-proof switch quick-opening device according to claim 1, characterized in that: The driving part includes a rotating drum (10) movably mounted on the side wall of the switch cabinet (1), and a protrusion (11) is integrally formed on the rotating drum (10) corresponding to the position below the push-inflating valve (5). The switch cabinet (1) is also movably mounted with a connecting rod (6) that can slide up and down on the side corresponding to the push-inflating valve (5). The end of the connecting rod (6) is in close contact with the rotating drum (10). When the connecting rod (6) is close to the push-inflating valve (5), a push block (7) is fixedly mounted thereon. One end of the push block (7) close to the push-inflating valve (5) is an inclined surface. A pressure plate (8) is provided on the end face of the push-inflating valve (5) close to the connecting rod (6). The pressure plate (8) is a short circular rod and the side wall of the pressure plate (8) extends radially to form a flange. A return spring (9) is fixedly mounted on the flange.

3. The high-voltage explosion-proof switch quick-opening device according to claim 1, characterized in that: The front ends of the sealing blocks (3) converge toward the center.

4. The high-voltage explosion-proof switch quick-opening device according to claim 2, characterized in that: The rotating drum (10) is located in the middle of the switch cabinet (1), and connecting rods (6) are provided on opposite sides of the upper and lower ends of the rotating drum (10).

5. The high-voltage explosion-proof switch quick-opening device according to claim 2, characterized in that: The rotating drum (10) is arranged at the end of the switch cabinet (1), and the connecting rod (6) is located between the rotating drum (10) and the other end of the switch cabinet (1).

6. The high-voltage explosion-proof switch quick-opening device according to claim 2, characterized in that: The rotating drum (10) extends to the outside of the switch cabinet (1) and is fixedly mounted with a handle (12).

7. The high-voltage explosion-proof switch quick-opening device according to claim 2, characterized in that: A locking rod (13) is axially movably installed in the middle of the rotating drum (10), and the locking rod (13) passes through the rotating drum (10) and extends into the sealing groove (2). The sealing block (3) is integrally formed with a locking block (14) at a position corresponding to the locking rod (13), and a locking hole (15) for accommodating the locking rod (13) is provided on the side wall surface of the locking block (14).

8. The high-voltage explosion-proof switch quick-opening device according to claim 7, characterized in that: A ventilation block (16) is fixedly installed in the sealing groove (2) at a position corresponding to the locking block (14). The ventilation block (16) is in communication with the sealing airbag (4). The ventilation block (16) is a hard shell. A ventilation hole (17) is provided on the front end surface of the ventilation block (16). The ventilation hole (17) is in communication with the interior of the ventilation block (16).

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