CN218344200U

CN218344200U - Sealing device for eliminating pressure difference

Info

Publication number: CN218344200U
Application number: CN202222020586.0U
Authority: CN
Inventors: 任伟
Original assignee: Zhengzhou Avatar Intelligent Equipment Co ltd
Current assignee: Zhengzhou Avatar Intelligent Equipment Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-01-20
Anticipated expiration: 2032-08-02

Abstract

The utility model provides an eliminate pressure differential sealing device, its constitution includes: by last casing and the shell body that the casing assembly formed down, fill with sealed oil in the cavity after last casing and casing seal down, be full of sealed oil around the electronic components, electronic components's wire leads out from the shell body through water joint, has seted up the pressure port at last casing, is equipped with deformation device in pressure port department, the shell body is inside through deformation device and external soft isolation, deformation device takes place to warp when meetting the external pressure that lasts in order to eliminate the inside and outside pressure difference of shell body. The beneficial effects are as follows: the pressure intensity is the same inside and outside the shell body can be realized to this device, owing to there is not pressure differential, and the phenomenon of intaking or outside oil seepage can not appear to the shell body, because deformation of deformation device can change along with the ambient pressure size moreover, so can guarantee that the pressure is balanced outside the shell body according to the inside and outside pressure of the depth of water automatic balance shell body of difference.

Description

Sealing device for eliminating pressure difference

Technical Field

The utility model relates to an electronic component seals the field, especially indicates an eliminate pressure differential sealing device.

Background

At present, most of underwater electronic element sealing is achieved by filling pouring sealant into a cavity, gluing a sealing end face, and adding a sealing groove to match sealing modes such as a sealing strip.

The waterproof effect is good in the mode of filling the pouring sealant in the cavity, but the electronic element cannot be maintained and replaced, and is mostly of a disposable structure; the conventional sealing mode is easy to seep water or even enter water at the joint of the end face of the shell due to the reasons of processing precision, materials, pressure, temperature change and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the prior art, provide an eliminate pressure differential sealing device.

The technical scheme of the utility model is realized like this:

a pressure differential relief seal, comprising: by last casing and the shell body that the casing assembly formed down go up the casing with go up the casing and fill up sealed oil in the cavity after the casing seals down, be full of sealed oil around the electronic components, electronic components's wire passes through water joint and follows draw forth in the shell body go up the casing and seted up the pressure port department is equipped with the deformation device, the shell body is inside to be passed through deformation device and external soft isolation, deformation device takes place to warp in order to eliminate when meetting the ambient pressure who lasts the difference in pressure inside and outside the shell body.

Furthermore, the upper shell is provided with a plurality of pressure holes, the deformation device is an elastic membrane I, the elastic membrane I is tightly attached to the inner side of the upper shell, the elastic membrane I covers the pressure holes, a first pressing plate covers the elastic membrane I, two ends of the first pressing plate are fixed to the inner side of the upper shell, the first pressing plate is provided with openings, and the openings correspond to the pressure holes in a one-to-one mode.

Furthermore, a plurality of grooves are formed in the inner side of the upper shell, at least one groove is formed in one side of each pressure hole, and a convex block corresponding to each groove is arranged on the first elastic membrane and clamped in each groove.

Further, the deformation device is an elastic membrane II, the elastic membrane II covers the lower shell, the upper shell is covered on the lower shell as an elastic membrane pressing plate, a pressure hole is formed in the middle of the upper shell, and the cross section of the pressure hole is the same as that of the inner cavity of the lower shell.

Furthermore, the upper shell is provided with a single pressure hole, an oil pipe is hermetically arranged at the pressure hole, the deformation device is a flexible oil bag, and the flexible oil bag is communicated with the inside of the outer shell through the oil pipe.

The utility model has the advantages that: the pressure intensity is the same inside and outside the shell body can be realized to this device, owing to there is not pressure differential, and the phenomenon of intaking or outside oil seepage can not appear to the shell body, because deformation of deformation device can change along with the ambient pressure size moreover, so can guarantee that the pressure is balanced outside the shell body according to the inside and outside pressure of the depth of water automatic balance shell body of difference.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic structural diagram of the second embodiment;

fig. 3 is a schematic structural diagram of the third embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, a pressure difference eliminating sealing device includes: the shell body that is formed by last casing 2 and lower casing 1 assembly, go up casing 2 and seal up through sealing strip or sealing ring down between the casing 1, at last casing 2 with lower casing 1 sealed cavity fill with sealed oil 3, be full of sealed oil 3 around the electronic components 4, sealed oil 3 wraps up electronic components 4, can prevent water contact electronic components 4, lead 5 of electronic components 4 is drawn out from the shell body through water joint, pressure hole 6 has been seted up at last casing 2, be equipped with deformation device at pressure hole 6 department, the inside soft isolation with the external world through deformation device that passes through of shell body, deformation device takes place to warp when meetting lasting external pressure, the volume of sealed oil 3 reduces after deformation device warp, and then make the pressure increase of sealed oil 3, when the pressure of sealed oil 3 is the same with the pressure of external water, deformation device is not taking place to warp.

The device can realize the same pressure inside and outside the shell body, and the shell body can not have the phenomenon of water inlet or outward oil seepage because of no pressure difference, and moreover, because the deformation of the deformation device can change along with the external pressure, the pressure inside and outside the shell body can be automatically balanced according to different water depths, and the balance of the internal pressure outside the shell body is ensured.

Example one

As shown in fig. 1, in this embodiment, a plurality of pressure holes 6 are formed in an upper housing 2, an elastic membrane one 7 is covered on the pressure holes 6 as a deformation device, grooves 8 are formed in two sides of the pressure holes 6, and it is ensured that at least one groove 8 is formed in each side of the pressure hole 6, after a bump 9 arranged on the elastic membrane one 7 is clamped in the groove 8, external water can be well prevented from entering the outer housing, a pressing plate 10 completely covers the elastic membrane one 7 and comprises a side surface of the elastic membrane one 7, openings 11 formed in the pressing plate 10 correspond to the pressure holes 6 one to one, so that deformation of the elastic membrane one 7 can occur at the pressure holes 6, in order to prevent excessive water pressure, the middle part of the elastic membrane one 7 is completely separated from contact with the upper housing 2, and the positions on two sides of the opening of the pressing plate 10 are fixedly connected to the upper housing 2.

Example two

As shown in fig. 2, in this embodiment, the deformation device is a second elastic membrane 12, the second elastic membrane 12 covers the lower casing 1, the upper casing 2 covers the lower casing 1 as an elastic membrane pressing plate, a pressure hole 6 is formed in the middle of the upper casing 2, and the cross section of the pressure hole 6 is the same as that of the inner cavity of the lower casing 1.

EXAMPLE III

As shown in fig. 3, a single pressure hole 6 is formed in the upper housing 2, an oil pipe 14 is hermetically installed at the pressure hole 6, the deformation device is a flexible oil bag 13, the flexible oil bag 13 and the oil pipe 14 are also filled with sealing oil 3, and the flexible oil bag 13 is communicated with the interior of the outer housing through the oil pipe 14.

When the sealing device is used, the outer shell and the flexible oil bag 13 are placed together underwater, when the external water pressure is greater than the oil pressure in the outer shell, the flexible oil bag 13 communicated with the inner cavity of the outer shell is extruded, the sealing oil 3 in the flexible oil bag 13 enters the outer shell through the oil pipe 14, when the internal pressure and the external pressure of the flexible oil bag 13 are the same, the flexible oil bag 13 is not deformed when the internal pressure and the external pressure of the outer shell are the same.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure differential relief seal, comprising: by last casing and the shell body that the casing assembly formed down, its characterized in that: go up the casing with go up the cavity after the casing seals and fill up sealed oil in, be full of sealed oil around the electronic components, electronic components's wire passes through water joint and follows draw in the shell go up the casing and seted up the pressure port department is equipped with the deformation device, the shell body is inside to be passed through deformation device and external soft isolation, the deformation device takes place to warp in order to eliminate when meetting the external pressure that lasts the difference of pressure inside and outside the shell body.

2. The pressure differential elimination sealing device of claim 1, wherein: the upper shell is provided with a plurality of pressure holes, the deformation device is an elastic membrane I, the elastic membrane I is tightly attached to the inner side of the upper shell, the elastic membrane I covers the pressure holes, a first pressing plate covers the elastic membrane I, two ends of the first pressing plate are fixed to the inner side of the upper shell, the first pressing plate is provided with holes, and the holes correspond to the pressure holes one to one.

3. The pressure differential relief seal apparatus of claim 2, wherein: the elastic membrane I is provided with a convex block corresponding to the groove, and the convex block is clamped in the groove.

4. The pressure differential elimination sealing device of claim 1, wherein: the deformation device is an elastic membrane II, the elastic membrane II covers the lower shell, the upper shell is covered on the lower shell as an elastic membrane pressing plate, a pressure hole is formed in the middle of the upper shell, and the cross section of the pressure hole is the same as that of the inner cavity of the lower shell.

5. The pressure differential elimination sealing device of claim 1, wherein: the upper shell is provided with a single pressure hole, an oil pipe is arranged at the pressure hole in a sealing mode, the deformation device is a flexible oil bag, and the flexible oil bag is communicated with the interior of the outer shell through the oil pipe.