CN215070913U

CN215070913U - Pressure relief device for outdoor sealed electrical box

Info

Publication number: CN215070913U
Application number: CN202120395372.4U
Authority: CN
Inventors: 韩江瑞; 李金强
Original assignee: Shanghai Chint Power Systems Co ltd
Current assignee: Shanghai Chint Power Systems Co ltd
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2021-12-07
Anticipated expiration: 2031-02-23

Abstract

The utility model relates to a pressure relief device for outdoor canned type electrical box belongs to outdoor electrical equipment technical field. The electric box body is provided with a pressure relief port, and the pressure relief port is provided with a pressure relief device; the pressure relief device comprises a rubber cover with a waterproof ring, a gland head and a mounting nut; the pressure relief port is provided with a gland head, and the gland head is arranged on the inner side part of the box body and connected with the mounting nut; the glan head is arranged on the outer side part of the box body and is connected with the rubber cover with the waterproof ring. The utility model discloses a structural design of waterproof construction, anti-disengaging structure and integrated into one piece structure has overcome the defect of the quick pressure relief device of current electrical box, makes pressure relief device both satisfy IP65 rank protection requirement, repeatedly usable again.

Description

Pressure relief device for outdoor sealed electrical box

Technical Field

The utility model relates to a pressure relief device for outdoor canned type electrical box belongs to outdoor electrical equipment technical field.

Background

When accidents happen to the interior of existing outdoor sealed electrical boxes, photovoltaic inverters and other electrical products to cause short circuit, thermal runaway and other events, gas in the shell is heated to a high temperature, and the pressure is also increased rapidly. Usually, the sealed box body can install the breather valve, and when pressure variation was flat slow, the breather valve can effectively balanced inside and outside differential pressure. However, when the internal pressure rises rapidly, the vent valve cannot relieve pressure in time, so that the shell bulges and deforms, and when the internal pressure is serious, the screw of the locking structural part is broken and flies out, so that other surrounding equipment is easily damaged, and even personal safety is injured.

The conventional quick pressure relief device for the electric box body generally adopts a mode of thin plate deformation or a mode of a cover plate with a hinge. The deformed thin plate type device cannot be reused after pressure relief, and the mode of the cover plate with the hinge cannot meet IP65 level protection generally. Therefore, the technical field needs to design a pressure relief device which not only meets the protection requirement of IP65 level, but also can be repeatedly used aiming at the defects of the existing quick pressure relief device for the electrical box body.

Disclosure of Invention

The utility model aims at solving the defect of how to overcome the quick pressure relief device of the existing electrical box body, so that the pressure relief device not only meets the protection requirement of IP65 level, but also can be repeatedly used.

In order to solve the problems, the technical scheme adopted by the utility model is to provide a pressure relief device for an outdoor sealed electrical box body, wherein the box body is provided with a pressure relief port, and the pressure relief port is provided with the pressure relief device; the pressure relief device comprises a rubber cover with a waterproof ring, a Gland (Glan head) and a mounting nut; the pressure relief port is provided with a gland head, and the part of the gland head, which is positioned at the inner side of the box body, is connected with the mounting nut; the part of the Glan head positioned at the outer side of the box body is connected with a rubber cover with a waterproof ring.

Preferably, the mounting nut abuts against the inner side wall of the box body.

Preferably, the glan head is provided with a channel leading to the outside of the box body, and a rubber cover with a waterproof ring is arranged in the channel.

Preferably, the rubber cover with the waterproof ring comprises a waterproof ring and a rubber cover; the waterproof ring is in a cylindrical shape with an opening at the lower part, and the top of the waterproof ring is connected with the rubber cover; the outer diameter of the cylindrical wall of the waterproof ring is matched with the inner diameter of the Glan head channel.

Preferably, the diameter of the rubber cap is greater than the internal diameter of the glan head channel.

Preferably, the outer side wall of the waterproof ring is provided with a bulge for clamping the inner side wall of the glan head channel.

Preferably, a rubber cover sealing ring is clamped between the Glan head and the outer side wall of the box body, and an anti-falling connecting piece is arranged between the rubber cover sealing ring and the rubber cover.

Preferably, the rubber cover is provided with a clamping hook for clamping the outer side wall of the gland head.

Preferably, the rubber cover, the waterproof ring, the anti-falling connecting piece, the bulge, the clamping hook and the rubber cover sealing ring are arranged as an integrally-formed piece.

Preferably, the pressure relief device is one or more.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a rubber lid relies on frictional force, turn-ups pothook and the arch that waterproof circle radial compression produced to resist the vibration that causes when transportation and operating mode with the Gland block to guarantee pressure relief device's waterproof performance and pressure release ability. The rubber cover and the waterproof ring are integrally formed. When the rubber cover is decompressed and popped out, the anti-falling connecting piece can prevent the rubber cover from flying out or falling everywhere to cause danger. The utility model overcomes current quick pressure relief device of electrical box's defect makes pressure relief device both satisfy IP65 rank protection requirement, repeatedly usable again.

Drawings

FIG. 1 is a schematic structural view of the components of the present invention;

FIG. 2A is a schematic view of the sectional structure of the utility model during installation;

FIG. 2B is a partial perspective view of the present invention during installation;

FIG. 3 is a second schematic structural view of the present invention during installation;

FIG. 4 is a schematic view of the structure of the present invention during pressure relief;

FIG. 5 is a schematic view of an embodiment of a pressure relief device;

wherein, the diagram A is the first diagram of the pressure relief device, and the diagram B is the second diagram of the pressure relief device.

Reference numerals: 1. mounting a nut; gland (Gland head); 3. a rubber cover with a waterproof ring; 4. a pressure relief device; 5. a drop-resistant connector; 6. a hook; 7. a protrusion; 8. a rubber cover sealing ring; 9. a waterproof ring; 10. a rubber cover; 11. a pressure relief port.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:

as shown in fig. 1-5, the utility model provides a pressure relief device for an outdoor sealed electrical box, wherein a pressure relief opening 11 is arranged on the box, and the pressure relief opening 11 is provided with a pressure relief device 4; the pressure relief device 4 comprises a rubber cover 3 with a waterproof ring, a Gland Gland head 2 and a mounting nut 1; a Gland head 2 is arranged on the pressure relief port 11, and the part of the Gland head 2 positioned on the inner side of the box body is connected with the mounting nut 1; the part of the Gland Gland head 2 positioned outside the box body is connected with a rubber cover 3 with a waterproof ring. The mounting nut 1 is abutted against the inner side wall of the box body. The Gland head 2 is provided with a channel leading to the outside of the box body, and a rubber cover 3 with a waterproof ring is arranged in the channel. The rubber cover 3 with the waterproof ring comprises a waterproof ring 9 and a rubber cover 10; the waterproof ring 9 is in a cylindrical shape with an opening at the lower part, and the top of the waterproof ring 9 is connected with the rubber cover 10; the outer diameter of the cylindrical wall of the waterproof ring 9 matches the inner diameter of the channel of the Gland head 2. The diameter of the rubber cap 10 is greater than the inner diameter of the glan head channel. The outer side wall of the waterproof ring 9 is provided with a bulge 7 for clamping the inner side wall of the glan head channel. A rubber cover sealing ring 8 is clamped between the Gland Gland head 2 and the outer side wall of the box body, and an anti-falling connecting piece 5 is arranged between the rubber cover sealing ring 8 and the rubber cover 10. The rubber cover 10 is provided with a hook 6 for catching the outer side wall of the gland head. The rubber cover 10, the waterproof ring 9, the anti-falling connecting piece 5, the bulge 7, the clamping hook 6 and the rubber cover sealing ring 8 are arranged into an integral molding piece. The pressure relief device 4 is one or more.

Description of the installation mode:

as shown in fig. 2; a rubber cover sealing ring 8 connected with a rubber cover 10 is sleeved on the Gland Gland head 2, then the Gland Gland head 2 is arranged at a pressure relief opening on a box body shell, and the Gland Gland head 2 is locked on the shell by an installation nut 1. The rubber cap 10 is inserted into the Gland head 2 channel and snapped flat to complete the assembly.

As shown in fig. 3; the rubber cover 10 is provided with a rubber cover sealing ring 8 for sealing between the Gland head 2 and the shell. A radial seal is formed between the rubber cap 10 and the Gland head 2 by means of the protrusion 7. In addition, the rubber cover 10 may be provided with a flange to block rainwater.

Anti-loosening and drop-off capability of the rubber cap 10 shown in fig. 4:

the rubber cover 10 can resist vibration caused by transportation and working conditions by means of friction force generated by radial compression of the waterproof ring 9, clamping of the flanging clamping hook 6 and the Gland Gland head 2 and clamping of the protrusion 7 and the Gland Gland head 2, and accordingly waterproof performance and pressure relief capacity are guaranteed. The rubber cover 10 is integrally formed with the waterproof ring 9. When the rubber cover 10 is decompressed and popped up, the anti-falling connecting piece 5 can prevent the rubber cover 10 from flying off or falling around. According to the test results, the relief opening pressure was about 0.3 MPa.

Examples

As shown in fig. 5; the bottom frame of the 125KW integrated machine is provided with a pressure relief device 4. Pressure relief device 4 installs in the enclosure space of underframe, for accomplishing pressure relief device 4 assembly, has the trompil in the base side.

This kind of model passes through UV test, high low temperature cycle test, transportation transport test, drop test, waterproof test, vibration test, and pressure relief device 4 is waterproof no problem, and rubber lid 10 also does not loosen and takes off. When the box body is inflated to 0.3MPa, the rubber cover 10 of the pressure relief device 4 can be bounced to complete the pressure relief action.

According to different sizes of the box body and pressure relief requirements, the pressure relief device 4 can be used together with a plurality of pressure relief devices.

The utility model discloses a rubber lid sealing washer 8's waterproof construction, rubber lid 10 radial seal waterproof construction, rubber lid 10 anti-disengaging structure, rubber lid 10 and waterproof 9 integrated into one piece structures of circle, use large-scale plastic nut, can produce enough pretightning force and Gland screen panel and be used for preventing inside mistake from bumping the structural design of rubber lid, overcome current electric box quick pressure relief device's defect, make pressure relief device both satisfy IP65 rank protection requirement, repeatedly usable again.

The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.

Claims

1. A pressure relief device for an outdoor sealed electrical box body is provided with a pressure relief opening, and the pressure relief opening is provided with a pressure relief device; the method is characterized in that: the pressure relief device comprises a rubber cover with a waterproof ring, a gland head and a mounting nut; the pressure relief port is provided with a gland head, and the part of the gland head, which is positioned at the inner side of the box body, is connected with the mounting nut; the part of the Glan head positioned at the outer side of the box body is connected with a rubber cover with a waterproof ring.

2. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 1, wherein: the mounting nut is abutted against the inner side wall of the box body.

3. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 1, wherein: the gland head is provided with a channel leading to the outside of the box body, and a rubber cover with a waterproof ring is arranged in the channel.

4. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 1, wherein: the rubber cover with the waterproof ring comprises a waterproof ring and a rubber cover; the waterproof ring is in a cylindrical shape with an opening at the lower part, and the top of the waterproof ring is connected with the rubber cover; the outer diameter of the cylindrical wall of the waterproof ring is matched with the inner diameter of the Glan head channel.

5. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 1, wherein: the diameter of the rubber cover is larger than the inner diameter of the Glan head channel.

6. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 5, wherein: and the outer side wall of the waterproof ring is provided with a bulge for clamping the inner side wall of the glan head channel.

7. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 6, wherein: a rubber cover sealing ring is clamped between the gland head and the outer side wall of the box body, and an anti-falling connecting piece is arranged between the rubber cover sealing ring and the rubber cover.

8. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 7, wherein: the rubber cover is provided with a clamping hook used for clamping the outer side wall of the Glan head.

9. The pressure relief device for an outdoor hermetically sealed electrical cabinet of claim 8, wherein: the rubber cover, the waterproof ring, the anti-falling connecting piece, the bulge, the clamping hook and the rubber cover sealing ring are arranged into an integrated piece.

10. A pressure relief device for an outdoor sealed electrical cabinet according to any one of claims 1 to 9, wherein: the pressure relief device is one or more.