CN108207098B - Moisture-proof pressure regulating device - Google Patents
Moisture-proof pressure regulating device Download PDFInfo
- Publication number
- CN108207098B CN108207098B CN201711489067.6A CN201711489067A CN108207098B CN 108207098 B CN108207098 B CN 108207098B CN 201711489067 A CN201711489067 A CN 201711489067A CN 108207098 B CN108207098 B CN 108207098B
- Authority
- CN
- China
- Prior art keywords
- inner cavity
- shell
- pressing plate
- moisture
- regulating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/068—Hermetically-sealed casings having a pressure compensation device, e.g. membrane
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses a moisture-proof pressure regulating device. The device comprises a shell, an inner cavity and a pressure plate pipe joint; the inner cavity is of a rectangular structure, a pipe joint is arranged on one side wall of the inner cavity through a fastening piece, and a sealing ring is arranged at the joint of the fastening piece and the inner cavity; the other three side walls are respectively provided with a ventilating rectangular hole, the three ventilating rectangular holes are respectively matched with the first pressing plate, the second pressing plate and the third pressing plate, a groove with a rectangular cross section is arranged around each ventilating rectangular hole, a sealing ring is arranged in each groove, a waterproof ventilating film is arranged between the pressing plates and the sealing rings, and the inner cavities of the pressing plates are fixedly connected; the two shells are arranged on two end faces of the inner cavity, the two shells are respectively provided with a rectangular cross-section groove for mounting a sealing ring, the waterproof breathable film is arranged between the sealing ring and the end face of the inner cavity, and the two shells are sleeved on the periphery of the inner cavity and fixed at four corners through threaded sleeves; the pressure plate and the shell are respectively provided with small air holes. The invention effectively reduces the damage and early failure of the equipment caused by the pressure difference between the inside and the outside, and prolongs the service life of the equipment.
Description
Technical Field
The invention relates to the technical field of moisture-proof pressure regulation, in particular to a moisture-proof pressure regulation device
Background
The design has some unreliable factors, especially for large-volume equipment (the volume is large, and the internal space of the cavity is far larger than the volume sum of the built-in devices), the actual sealing in the cavity is difficult to achieve, for example, a radome sealed in high-temperature weather, when the radome is in low-temperature weather, theoretically, the temperatures of two extreme temperatures can be different by 110 ℃ in different time intervals inside and outside the cavity, under the effective sealing condition, the difference between the internal gas pressure and the external gas pressure is large, the ratio of the extreme pressure is larger than 1.47, the sealing rope joint or the radome itself can be failed due to the large difference between the internal pressure and the external pressure, and once the airtightness is failed, the moisture condensation generated by the breathing effect can cause the corrosion of the internal devices. Therefore, the dust-proof moisture-proof pressure regulating device is necessary to be developed and additionally arranged on large-volume equipment. Through the moisture-proof pressure regulating device, the inside and outside gas of equipment can be exchanged, but outside dust, humidity, rainwater and salt fog can not get into, can effectively reduce equipment (for example antenna house and sealing washer) because of the damage that the inside and outside pressure differential produced and lose efficacy early, prolong its life-span, still can avoid simultaneously sealed equipment apron, door or cover when sealed difficult drawback of opening when not losing efficacy, also do benefit to the equipment heat dissipation simultaneously.
The moisture-proof pressure regulating device has wide application, can be applied to equipment outside a cabin such as an antenna, a high-frequency box, a transmitter and the like, and can also be used as reference for air-used equipment, land-used equipment and cabin sealing equipment. The manufacturers in China have successfully researched, for example, outdoor communication equipment, radar sealed cavities and headlamps of high-grade automobiles all adopt the technology of moisture-proof pressure regulating devices. Some companies have also introduced a series of products, namely waterproof and breathable valves, according to market demands, and through knowledge of product specifications, materials and other aspects of the companies, most of the known products have the defects that O-shaped sealing rings are prone to damage due to improper installation and cannot be exposed to extreme temperature or temperature fluctuation, so that the breathable quantity of large-volume equipment cannot meet actual demands, and potential hazards exist in reliability and safety. The existing equipment is modified to install the waterproof ventilation valve due to the large threaded hole of tapping, so that the difficulty is high and the adaptability is poor.
Disclosure of Invention
The invention aims to provide a moisture-proof pressure regulating device with strong reliability and high safety.
The technical solution for realizing the purpose of the invention is as follows: a moisture-proof pressure regulating device comprises a first shell, a second shell, an inner cavity, a first pressing plate, a second pressing plate, a third pressing plate and a pipe joint;
the inner cavity is of a rectangular structure, a pipe joint is arranged on one side wall of the inner cavity through a fastening piece, and a sealing ring is arranged at the joint of the fastening piece and the inner cavity; the other three side walls are respectively provided with a ventilating rectangular hole, the three ventilating rectangular holes are respectively matched with the first pressing plate, the second pressing plate and the third pressing plate, a groove with a rectangular cross section is arranged around each ventilating rectangular hole, a sealing ring is arranged in each groove, a waterproof ventilating film is arranged between the pressing plates and the sealing rings, and the inner cavities of the pressing plates are fixedly connected;
the first shell and the second shell are arranged on two end faces of the inner cavity, rectangular cross-section grooves for mounting the sealing rings are respectively formed in the first shell and the second shell, the waterproof breathable film is arranged between the sealing rings and the end faces of the inner cavity, and the first shell and the second shell are sleeved on the periphery of the inner cavity and are fixed at four corners through 4 threaded sleeves;
the first pressing plate, the second pressing plate, the third pressing plate, the first shell and the second shell are respectively provided with small ventilation holes.
Furthermore, the middle of the inner cavity is of a cross reinforcing rib structure, the inner part of the cavity is divided into 4 spaces, and the 4 spaces are communicated through holes.
Furthermore, a section groove for installing a sealing ring is arranged on the pipe joint, and the pipe joint and the inner cavity are in a radial sealing mode.
Further, the fastener comprises a fastening screw, an elastic pad and a flat pad.
Furthermore, the pressing plate is fixedly connected with the inner cavity through screws, and screw holes connected to the inner cavity are not through holes.
Compared with the prior art, the invention has the following remarkable advantages: (1) the internal and external pressure difference caused by temperature change in the sealing equipment is eliminated, and the service lives of the equipment shell and the sealing ring are prolonged; (2) the corrosion problem caused by the moisture condensation generated by the 'breathing effect' caused by the sealing failure of the sealing equipment is avoided, and the reliability of the equipment is improved; (3) the actual demand of large-volume equipment is met, the reliability is high, the safety is high, and the installation and the transformation are convenient.
Drawings
Fig. 1 is a sectional view of the moisture and pressure preventing and adjusting device, in which (a) is a left side view, (b) is a front view, (c) is a right side view, (d) is a top view, (e) is a partially enlarged view of (b), and (f) is a sectional view of (c).
Fig. 2 is a perspective view showing the structure of the moisture and pressure preventing and regulating device.
Fig. 3 is a schematic structural view of the first housing, in which (a) is a left side view, (b) is a front view, (c) is a right side view, and (d) is a three-dimensional view.
Fig. 4 is a schematic structural view of the second housing, in which (a) is a left side view, (b) is a front view, (c) is a right side view, and (d) is a three-dimensional view.
Fig. 5 is a schematic structural view of the lumen, wherein (a) is a sectional view and (b) is a three-dimensional view.
Fig. 6 is a schematic view of a nut, in which (a) is a schematic view of one form of structure and (b) is a schematic view of another form of structure.
Fig. 7 is a schematic view of the moisture and pressure preventing and regulating device installed inside and outside the apparatus, wherein (a) is a schematic view of the case where the device is installed inside, (b) is a schematic view of the case where the device is installed inside, and (c) is a schematic view of the case where the device is installed outside.
Detailed Description
The invention relates to a moisture-proof pressure regulating device which comprises a first shell 1, a second shell 2, an inner cavity 3, a first pressing plate 5, a second pressing plate 6, a third pressing plate 7 and a pipe joint 8;
the inner cavity 3 is of a rectangular structure, a pipe joint 8 is arranged on one side wall through a fastening piece 20, and a sealing ring is arranged at the joint of the fastening piece 20 and the inner cavity 3; the other three side walls are respectively provided with a ventilating rectangular hole, the three ventilating rectangular holes are respectively matched with a first pressing plate 5, a second pressing plate 6 and a third pressing plate 7, a groove with a rectangular cross section is arranged around each ventilating rectangular hole, a sealing ring is arranged in each groove, a waterproof ventilating film is arranged between the pressing plates and the sealing rings, and the inner cavities 3 of the pressing plates are fixedly connected;
the first shell 1 and the second shell 2 are arranged on two end faces of the inner cavity 3, the first shell 1 and the second shell 2 are respectively provided with a groove with a rectangular cross section for mounting a sealing ring, the waterproof breathable film is arranged between the sealing ring and the end face of the inner cavity 3, the first shell 1 and the second shell 2 are sleeved on the periphery of the inner cavity 3, and four corners of the first shell 1 and the second shell 2 are fixed through 4 threaded sleeves 4;
the first pressing plate 5, the second pressing plate 6, the third pressing plate 7, the first shell 1 and the second shell 2 are respectively provided with small air holes 21-25.
Further, the middle of the inner cavity 3 is of a cross reinforcing rib structure, the inner part of the cavity is divided into 4 spaces, and the 4 spaces are communicated through holes.
Furthermore, a section groove for installing a sealing ring is arranged on the pipe joint 8, and the pipe joint 8 and the inner cavity 3 adopt a radial sealing mode.
Further, the fastening member 20 includes a fastening screw, an elastic pad, and a flat pad.
Further, the pressing plate is fixedly connected with the inner cavity 3 through screws, and screw holes connected to the inner cavity 3 are not through holes.
The invention is described in further detail below with reference to the figures and the embodiments.
Example 1
With reference to fig. 1(a) - (f) and fig. 2, the moisture-proof pressure-regulating device in this embodiment mainly comprises a first housing 1, a second housing 2, a pipe joint 8, an inner cavity 3, a first pressing plate 5, a second pressing plate 6, a third pressing plate 7, a threaded sleeve 4, waterproof breathable films 9-13, sealing rings 14-19, fasteners 20, and the like.
The first shell 1 is provided with a groove with a rectangular cross section for mounting a sealing ring, a cross reinforcing rib in the middle, and 4 mounting unthreaded holes and small ventilation holes which are connected with the second shell (see fig. 3(a) to (d)).
The second shell 2 is provided with a groove with a rectangular section for mounting a sealing ring, a cross reinforcing rib is arranged in the middle, and 4 mounting screw holes and small ventilation holes (see figures 4(a) - (d))
The 5 faces of the inner cavity 3 are provided with ventilating rectangular holes, wherein the outer edges of the 3 faces of the rectangular holes are provided with rectangular cross-section grooves all around, a sealing ring can be arranged in each groove, the 3 faces of the inner cavity are provided with a through hole for installing a pipe joint 8 and 4 screw holes, and the waterproof breathable film is arranged between the pressing plate and the sealing ring. The pressing plate is provided with small ventilation holes and is fixedly connected with the inner cavity through a fastener, the screw holes connected with the inner cavity are communicated holes, the middle of the inner cavity is of a cross reinforcing rib structure, the inner part of the cavity is divided into 4 spaces, the 4 spaces are communicated through holes (see fig. 5(a) - (b)), and the inner part of the cavity can also be divided into more than 4 spaces.
All sealing rings 14-19, waterproof breathable films 9-13, pressing plates 5-7 and pipe joints 8 are installed on the inner cavity 3, all sealing rings are installed on the first shell 1 and the second shell 2, and the three assemblies are assembled into a whole through 4 screw sleeves to form the moisture-proof pressure regulating device.
The screw sleeve 4 can be formed by modifying a standard screw, and the modified through hole can be used as a fixing hole of a moisture-proof pressure regulating device (see figures 6(a) - (b))
The moisture-proof pressure regulating device 1 is provided with a pipe joint 8 on one surface, the pipe joint 8 exchanges air with the inside and the outside of the sealing equipment, and rectangular holes are arranged on the other 5 surfaces. .
The moisture-proof pressure regulating device is of a cuboid or cube structure, and 5 faces of the moisture-proof pressure regulating device are provided with waterproof breathable films.
The pipe joint 8 is provided with a section groove for mounting a sealing ring, and the pipe joint 8 and the inner cavity 3 adopt a radial sealing mode.
The moisture-proof pressure regulating device has good adaptability, can be arranged in the sealing equipment, and also can be arranged outside the sealing equipment (see (a) to (c) in figure 7), and exchanges gas with the inside and the outside of the equipment through the connecting pipe and the wall-penetrating sealing joint, and external moisture cannot enter the equipment due to the action of the waterproof breathable film in the exchange process. The installation aperture is little, and site operation is convenient, very is suitable for current equipment installation moisture-proof pressure regulating device transformation engineering.
The working principle of the moisture-proof pressure regulating device is as follows: with reference to fig. 1-7, when the moisture-proof pressure regulating device is installed inside the equipment, the pressure of the internal gas is higher than that of the external gas due to the temperature rise inside the equipment, and the internal gas flows into the moisture-proof pressure regulating device through the small holes 21-25 for external ventilation of the moisture-proof pressure regulating device, passes through the waterproof breathable films 9-13, the pipe joint 8, the connecting pipe and the through-wall sealing joint, and is discharged outside. When the external temperature of the equipment drops, the internal gas pressure is less than the external gas pressure, the external gas flows to the inside of the equipment through the wall-penetrating sealing joint, the connecting pipe, the pipe joint 8, the waterproof breathable films 9-13 and the external breathable small holes 21-25 of the moisture-proof pressure regulating device, and in the flowing process, external moisture cannot enter the inside of the equipment due to the effect of the waterproof breathable films.
When the moisture-proof pressure-regulating device is installed outside the equipment, the flowing process of the air inside and outside the equipment is opposite to the above situation.
Above-mentioned several kinds of circumstances, through the moisture-proof pressure regulating device, inside and outside gas has exchanged, and the inside and outside pressure difference of equipment has reduced, balanced, has effectively reduced equipment (for example antenna house and sealing washer) because of the damage that inside and outside pressure difference produced and became invalid early, has prolonged the life-span, still can avoid sealed equipment apron, door or cover to work as the drawback of difficult opening simultaneously.
Claims (4)
1. A moisture-proof pressure regulating device is characterized by comprising a first shell (1), a second shell (2), an inner cavity (3), a first pressing plate (5), a second pressing plate (6), a third pressing plate (7) and a pipe joint (8);
the inner cavity (3) is of a rectangular structure, a pipe joint (8) is arranged on one side wall through a fastening piece (20), and a sealing ring is arranged at the joint of the fastening piece (20) and the inner cavity (3); the other three side walls are respectively provided with a ventilating rectangular hole, the three ventilating rectangular holes are respectively matched with a first pressing plate (5), a second pressing plate (6) and a third pressing plate (7), a groove with a rectangular cross section is formed around each ventilating rectangular hole, a sealing ring is arranged in each groove, a waterproof ventilating film is arranged between the pressing plates and the sealing rings, and the inner cavities (3) of the pressing plates are fixedly connected;
the first shell (1) and the second shell (2) are arranged on two end faces of the inner cavity (3), rectangular cross-section grooves for installing sealing rings are respectively formed in the first shell (1) and the second shell (2), the waterproof breathable film is installed between the sealing rings and the end faces of the inner cavity (3), and the first shell (1) and the second shell (2) are sleeved on the periphery of the inner cavity (3) and are fixed at four corners through 4 threaded sleeves (4);
the first pressing plate (5), the second pressing plate (6), the third pressing plate (7), the first shell (1) and the second shell (2) are respectively provided with small ventilation holes;
the pipe joint (8) is provided with a section groove for mounting a sealing ring, and the pipe joint (8) and the inner cavity (3) adopt a radial sealing mode.
2. The moisture-proof pressure regulating device according to claim 1, wherein the middle of the inner cavity (3) is of a cross-shaped reinforcing rib structure, the inner part of the cavity is divided into 4 spaces, and the 4 spaces are communicated through holes.
3. Moisture and pressure regulating device according to claim 1 or 2, characterized in that said fastening means (20) comprise a fastening screw, an elastic pad, a flat pad.
4. The moisture-proof pressure regulating device according to claim 1 or 2, wherein the pressure plate is fixedly connected with the inner cavity (3) through screws, and screw holes connected to the inner cavity (3) are blind holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489067.6A CN108207098B (en) | 2017-12-30 | 2017-12-30 | Moisture-proof pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489067.6A CN108207098B (en) | 2017-12-30 | 2017-12-30 | Moisture-proof pressure regulating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108207098A CN108207098A (en) | 2018-06-26 |
| CN108207098B true CN108207098B (en) | 2020-04-17 |
Family
ID=62605989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711489067.6A Active CN108207098B (en) | 2017-12-30 | 2017-12-30 | Moisture-proof pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108207098B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658302A (en) * | 2018-06-28 | 2020-01-07 | 大陆汽车电子(长春)有限公司 | Nitrogen oxygen sensor and shell with waterproof and breathable structure |
| CN109327990A (en) * | 2018-11-02 | 2019-02-12 | 中国船舶重工集团公司第七二三研究所 | The moisture-proof regulator of water-tight equipment |
| CN109613501A (en) * | 2018-11-28 | 2019-04-12 | 中国船舶重工集团公司第七二三研究所 | D shipborne radar cover water inletting monitoring device |
| CN110290663A (en) * | 2019-06-20 | 2019-09-27 | 深圳市洛丁光电有限公司 | A kind of water proof type communication electric component box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106666980A (en) * | 2017-02-14 | 2017-05-17 | 黄山鼎瑞新实业有限公司 | Safety protection box |
| CN206294455U (en) * | 2017-01-05 | 2017-06-30 | 中山市鼎上电子科技有限公司 | A kind of novel power supply with water-proof function |
| CN107061828A (en) * | 2017-02-14 | 2017-08-18 | 黄山鼎瑞新实业有限公司 | Safety valve |
| CN206565472U (en) * | 2017-02-14 | 2017-10-20 | 黄山鼎瑞新实业有限公司 | safety protective box |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5144908B2 (en) * | 2006-03-06 | 2013-02-13 | 矢崎総業株式会社 | Waterproof case |
| US20140268518A1 (en) * | 2013-03-15 | 2014-09-18 | Mophie, Inc. | Durable protective battery case |
-
2017
- 2017-12-30 CN CN201711489067.6A patent/CN108207098B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206294455U (en) * | 2017-01-05 | 2017-06-30 | 中山市鼎上电子科技有限公司 | A kind of novel power supply with water-proof function |
| CN106666980A (en) * | 2017-02-14 | 2017-05-17 | 黄山鼎瑞新实业有限公司 | Safety protection box |
| CN107061828A (en) * | 2017-02-14 | 2017-08-18 | 黄山鼎瑞新实业有限公司 | Safety valve |
| CN206565472U (en) * | 2017-02-14 | 2017-10-20 | 黄山鼎瑞新实业有限公司 | safety protective box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108207098A (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108207098B (en) | Moisture-proof pressure regulating device | |
| CN201909072U (en) | Waterproof, dustproof, ventilated and heat-dissipating breathing device of outdoor seal equipment | |
| CN211257353U (en) | Assembled intelligent photoelectric heat-preservation fireproof building material | |
| CN105188306A (en) | Electrical cabinet cooling and drying device | |
| CN103134031A (en) | Electronic device and connector | |
| CN204267993U (en) | The thermal insulation casing of architecture advances | |
| CN204316302U (en) | The extraordinary frequency converter of a kind of high-protection level | |
| CN203912408U (en) | Electrical box and air conditioner with same | |
| CN107956812B (en) | Coupling shield of refrigeration compressor | |
| CN204880549U (en) | Display control box and tuber pipe air conditioner | |
| CN211183523U (en) | UPS battery cabinet convenient to real-time maintenance | |
| CN104819331A (en) | Sealing sleeve for air conditioner valve, air conditioner valve component and air conditioner | |
| CN201401903Y (en) | Coplanar connecting structure of box panel of air handling unit of central air conditioner | |
| CN112770570A (en) | High protection level converter | |
| CN207691832U (en) | Relaying is exchanged for the Power over Ethernet in rail traffic | |
| CN209818860U (en) | Heat dissipation shell of electropneumatic valve positioner | |
| CN104406013A (en) | Structure improved heat insulation casing | |
| CN205584678U (en) | Electrical equipment and combined structure of controller mainboard and electrical box thereof | |
| CN205544093U (en) | Two high protection generating line principal mode materials of side dress of wind energy | |
| CN104973307A (en) | Airtight heat insulation box | |
| CN204646616U (en) | Water-pump controlling box | |
| CN104154233B (en) | Sealing adaptor part and semiconductor manufacturing equipment | |
| CN203859427U (en) | Box type transformer station casing | |
| CN215891477U (en) | Air conditioner connecting pipe convenient to stable butt joint | |
| CN103151060B (en) | Hard disk and there is its server |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |