An explosion-proof power distribution device

Abstract

The utility model discloses an anti -explosion power distribution device, this anti -explosion power distribution device includes the cabinet body, the apron, be equipped with the gasket between the cabinet body and apron, the cabinet body is equipped with the first flange portion, the apron is equipped with the second flange portion, the first flange portion is equipped with a plurality of equal interval's support, the support is equipped with the liftable and unrotatable connecting piece, the connecting piece is equipped with the elastic part, and passes through the gasket, the elastic part abuts the second flange portion. Only need to rotate bolt can be connected with connecting piece fixed, simplify fastening operation step, significantly shorten the installation or dismounting time, in addition, the elastic part also exerts a downward force to bolt, not only strengthened the connection stability of apron and cabinet body, more when bolt is not completely screwed, avoid bolt to appear loose through enhancing friction, and the gasket and the sealing portion are embedded in the apron and form double sealing measures, make product also can safe and reliable operation under the harsh environment.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof technology, and in particular to an explosion-proof power distribution device. Background Technology

[0002] Explosion-proof distribution cabinets are electrical devices specifically designed for power distribution and control in flammable and explosive environments. The various electrical components within these cabinets, such as circuit breakers, contactors, and relays, perform optimally within a suitable temperature range. Excessively high or low temperatures can lead to decreased accuracy, malfunction, or damage. Effective temperature control provides a stable operating environment for these devices, ensuring their accurate and reliable operation.

[0003] To ensure their explosion-proof performance, explosion-proof distribution cabinets typically employ aluminum alloy or stainless steel plates welded into an explosion-proof structure. To further enhance the explosion-proof effect and sealing performance, multiple mounting holes are provided at the flange locations of the cabinet and cover plate. The cover plate is then secured to the cabinet using bolts and nuts. This design effectively prevents explosive gases or dust from entering the equipment, thus ensuring its safe operation.

[0004] However, the actual installation and removal of fasteners often requires a significant amount of time and effort, which not only affects work efficiency but also increases the workload of operators. Furthermore, due to the installation of too many fasteners, negligence by workers can lead to unstable fastener connections, causing them to loosen under external forces during subsequent use, thereby reducing the sealing performance of the cabinet. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this context. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing designs mentioned in the background art and to provide a product that improves work efficiency, has a reliable connection, and operates stably and reliably.

[0006] An explosion-proof power distribution device includes a cabinet and a cover plate. A sealing gasket is provided between the cabinet and the cover plate. The cabinet has a first flange, and the cover plate has a second flange. The first flange has a plurality of equally spaced support members. Each support member has a liftable but non-rotatable connector. Each connector has an elastic element that passes through the sealing gasket and abuts against the second flange. The second flange has bolts that are threaded to the connectors to allow the connectors to move upward. The cabinet has a sealing part that is embedded in the cover plate.

[0007] Preferably, the support member is provided with a through hole for the lifting and lowering of the connecting member, and the end face of the through hole is provided with a plurality of equally spaced limiting grooves evenly distributed around the dot as the axis.

[0008] Preferably, the outer wall of the connector is provided with a limiting part and slides in the limiting groove.

[0009] Preferably, the connector has a first blind hole and a second blind hole, the second blind hole has an internal thread groove, and the bolt is threaded into the internal thread groove.

[0010] Preferably, the elastic element is configured as a cylindrical helical compression spring with a rectangular cross-section, and the elastic element is fixed in the first blind hole.

[0011] Preferably, the cover plate is provided with a sealing groove to accommodate the sealing part. Beneficial effects

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model can be connected and fixed with the connecting parts by simply rotating the bolt, which simplifies the fastening operation steps. This design significantly shortens the installation or disassembly time and reduces the labor intensity of the operators. In addition, the elastic element also applies a downward force to the bolt, which not only strengthens the connection stability between the cover plate and the cabinet, but also effectively avoids the risk of bolt loosening by increasing the friction when the bolt is not fully tightened, ensuring the long-lasting and reliable sealing between the cabinet and the cover plate, so that the product has the dual advantages of high efficiency and convenience and reliable connection.

[0013] (2) In this utility model, when the cover plate is tightly connected to the cabinet, the sealing gasket serves as the first sealing measure, effectively preventing external explosive gases from entering the cabinet. Secondly, the sealing part is embedded in the cover plate to form a labyrinth sealing structure, constructing a second sealing defense line. Even if the sealing gasket ages over time, resulting in a decrease in sealing performance, the labyrinth structure can still provide additional safety protection, ensuring the sealing performance of the cabinet and enabling the product to operate safely and reliably in harsh environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an explosion-proof power distribution device according to the present invention; Figure 2 This is a side cross-sectional view of an explosion-proof power distribution device according to the present invention. Figure 1 ; Figure 3 This utility model Figure 2 A partial enlarged view A of an explosion-proof power distribution device; Figure 4 This is a side cross-sectional view of an explosion-proof power distribution device according to the present invention. Figure 2 ; Figure 5 This utility model Figure 4 A partial enlarged view (B) of an explosion-proof power distribution device; The correspondence between the labels and component names in the attached figures is as follows: Reference numerals in the attached drawings: 1. Cabinet body; 2. Cover plate; 3. Sealing gasket; 4. Support component; 5. Connector; 6. Bolt; 7. Elastic component; 11. First flange part; 12. Sealing part; 21. Second flange part; 22. Sealing groove; 41. Through hole; 42. Limiting groove; 51. Limiting part; 52. First blind hole; 53. Second blind hole; 54. Internal thread groove. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0018] Reference example Figures 1 to 5 An explosion-proof power distribution device includes a cabinet 1 and a cover plate 2. A sealing gasket 3 is provided between the cabinet 1 and the cover plate 2. The cabinet 1 is provided with a first flange 11, and the cover plate 2 is provided with a second flange 21. The first flange 11 is provided with a plurality of equally spaced support members 4. The support members 4 are provided with liftable and non-rotatable connecting members 5. The connecting members 5 are provided with elastic members 7, which pass through the sealing gasket 3. The elastic members 7 abut against the second flange 21. The second flange 21 is provided with bolts 6, which are threaded to the connecting members 5 to make the connecting members 5 move upward. The cabinet 1 is provided with a sealing part 12, which is embedded in the cover plate 2. It is worth mentioning that the support member 4 is provided with a through hole 41 for the lifting and lowering of the connecting member 5. The end face of the through hole 41 is provided with several equally spaced limiting grooves 42 evenly distributed around the dot as the axis. While the through hole 41 provides guidance for the lifting and lowering of the connecting member 5, the limiting grooves 42 limit the distance of the connecting member 5 to descend. It is worth mentioning that the outer wall of the connector 5 is provided with a limiting part 51, which slides in the limiting groove 42. During the installation process, when the bolt 6 rotates, the limiting part 51 will come into close contact with the side wall of the limiting groove 42, generating a force that prevents the connector 5 (equivalent to a nut) from rotating. This design makes the limiting groove 42 act like a wrench that continuously prevents the nut from rotating, effectively preventing the connector 5 from rotating with the bolt 6, thereby simplifying the installation steps, reducing labor intensity, and improving installation efficiency. It is worth mentioning that the connector 5 is provided with a first blind hole 52 and a second blind hole 53. The second blind hole 53 is provided with an internal thread groove 54, and the bolt 6 is threaded into the internal thread groove 54. It is worth mentioning that the elastic element 7 is set as a cylindrical helical compression spring with a rectangular cross section. The elastic element 7 is fixed in the first blind hole 52. The elastic element 7 can be fixed by means of a pin or a pin rod. It is worth mentioning that the cover plate 2 is provided with a sealing groove 22 to accommodate the sealing part 12. When the cover plate 2 is tightly connected to the cabinet 1, the sealing gasket 3 serves as the first sealing measure, effectively preventing external explosive gases from entering the cabinet 1. Secondly, the sealing part 12 is embedded in the cover plate 2 to form a labyrinth-style sealing structure, constructing a second line of defense. Even if the sealing gasket 3 ages over time, resulting in a decrease in sealing performance, the labyrinth-style structure can still provide additional safety assurance, ensuring the sealing of the cabinet 1 and enabling the product to operate safely and reliably in harsh environments.

[0019] The working principle of this utility model is described as follows: Simply rotating the bolt 6 allows for connection and fixation with the connector 5, simplifying the tightening process. This design significantly shortens installation or disassembly time and reduces the workload of operators. In addition, the elastic element 7 applies a downward force to the bolt 6, which not only strengthens the connection stability between the cover plate 2 and the cabinet 1, but also effectively avoids the risk of the bolt 6 loosening by increasing friction when it is not fully tightened. This ensures a durable and reliable seal between the cabinet 1 and the cover plate 2, giving the product the dual advantages of high efficiency and convenience as well as a secure connection.

[0020] The above design scheme enables the product to achieve the advantages of improved work efficiency, reliable connection, and stable and reliable operation.

[0021] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An explosion-proof power distribution device, comprising a cabinet (1) and a cover plate (2), wherein a sealing gasket (3) is provided between the cabinet (1) and the cover plate (2), characterized in that: The cabinet (1) is provided with a first flange (11), and the cover plate (2) is provided with a second flange (21). The first flange (11) is provided with a number of equally spaced support members (4). The support members (4) are provided with a liftable and non-rotatable connector (5). The connector (5) is provided with an elastic member (7) that passes through a sealing gasket (3). The elastic member (7) abuts against the second flange (21). The second flange (21) is provided with a bolt (6) that is threaded to the connector (5) to make the connector (5) move upward. The cabinet (1) is provided with a sealing part (12) that is embedded in the cover plate (2).

2. The explosion-proof power distribution device according to claim 1, characterized in that: The support member (4) is provided with a through hole (41) for the connection member (5) to rise and fall. The end face of the through hole (41) is provided with a number of equally spaced limiting grooves (42) evenly distributed around the dot as the axis.

3. The explosion-proof power distribution device according to claim 2, characterized in that: The outer wall of the connector (5) is provided with a limiting part (51) and slides in the limiting groove (42).

4. The explosion-proof power distribution device according to claim 1, characterized in that: The connector (5) is provided with a first blind hole (52) and a second blind hole (53). The second blind hole (53) is provided with an internal thread groove (54). The bolt (6) is threadedly connected to the internal thread groove (54).

5. The explosion-proof power distribution device according to claim 4, characterized in that: The elastic element (7) is configured as a rectangular cross-section cylindrical helical compression spring, and the elastic element (7) is fixed in the first blind hole (52).

6. The explosion-proof power distribution device according to claim 1, characterized in that: The cover plate (2) is provided with a sealing groove (22) for accommodating the sealing part (12).

Images