阅读说明：本技术 一种用于户外密封型电气箱体的泄压装置 (Pressure relief device for outdoor sealed electrical box ) 是由 韩江瑞 李金强 于 2021-02-23 设计创作，主要内容包括：本发明涉及一种用于户外密封型电气箱体的泄压装置,属于户外电气设备技术领域。电气箱体上设有泄压口,泄压口设有泄压装置；泄压装置包括带防水圈的橡胶盖、格兰头和安装螺母；泄压口上设有格兰头,格兰头设于箱体内侧部分与安装螺母连接；格兰头设于箱体外侧部分与带防水圈的橡胶盖连接。本发明通过防水结构、防脱结构以及一体成型结构的结构设计,克服了现有电气箱体快速泄压装置的缺陷,使泄压装置既满足IP65级别防护要求,又可重复使用。(The invention relates to a pressure relief device for an outdoor sealed electrical box body, and belongs to the technical field of outdoor electrical equipment. 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 invention overcomes the defects of the existing quick pressure relief device for the electrical box body by the structural design of the waterproof structure, the anti-falling structure and the integrated structure, so that the pressure relief device not only meets the protection requirement of IP65 level, but also can be repeatedly used.)

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.

Technical Field

The invention relates to a pressure relief device for an outdoor sealed electrical box body, and belongs to the technical field of outdoor electrical equipment.

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 invention aims to overcome the defects of the conventional quick pressure relief device for the electric 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 invention is to provide a pressure relief device for an outdoor sealed electrical box body, wherein a pressure relief opening is formed in the box body, and the pressure relief opening 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 invention has the following beneficial effects:

the rubber cover resists vibration caused by transportation and working conditions by means of friction force generated by radial compression of the waterproof ring and clamping of the clamping hook and the bulge of the flanging and the Gland, so that the waterproof performance and the pressure relief capacity of the pressure relief device are ensured. 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 invention overcomes the defects of the existing quick pressure relief device for the electrical box body, so that the pressure relief device not only meets the protection requirement of IP65 level, but also can be repeatedly used.

Drawings

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

FIG. 2 is a first schematic structural 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 pressure relief structure of the present invention;

FIG. 5 is a schematic view of an embodiment of a 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 invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:

as shown in fig. 1-5, the present invention provides a pressure relief device for an outdoor sealed electrical box, wherein a pressure relief port 11 is provided on the box, and the pressure relief port 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 all-in-one machine is provided with the 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.

According to the invention, through the waterproof structure of the rubber cover sealing ring 8, the radial sealing waterproof structure of the rubber cover 10, the anti-falling structure of the rubber cover 10, the integrated forming structure of the rubber cover 10 and the waterproof ring 9 and the structural design that a large-sized plastic nut is used, enough pretightening force can be generated and a Gland mesh enclosure is used for preventing the interior from mistakenly touching the rubber cover, so that the defect of the conventional quick pressure relief device for the electric box body is overcome, and the pressure relief device not only meets the protection requirement of IP65 level, but also can be repeatedly used.

While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.