CN113437573A - Electric connector deep low temperature zero leakage sealing isolation structure - Google Patents
Electric connector deep low temperature zero leakage sealing isolation structure Download PDFInfo
- Publication number
- CN113437573A CN113437573A CN202110674030.0A CN202110674030A CN113437573A CN 113437573 A CN113437573 A CN 113437573A CN 202110674030 A CN202110674030 A CN 202110674030A CN 113437573 A CN113437573 A CN 113437573A
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- Prior art keywords
- temperature
- low
- isolation structure
- zero leakage
- shell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5213—Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
According to the electric connector deep low temperature zero leakage sealing isolation structure, the low temperature micro switch and the mounting plate are both positioned in the shell, and the low temperature micro switch is fixed on the mounting plate; the mounting disc is connected with the shell through threads, and the mounting disc is prevented from loosening through an adhesive after being connected; the flange cover is connected with the shell flange through a threaded fastener; the sealing gasket is positioned between the flange cover and the shell flange; the insulating sealing sleeve is fixed on the flange cover, and the wiring terminal is fixed in the insulating sealing sleeve. The structure can effectively ensure the normal use of the electric connector under the deep low-temperature working condition, and can convert mechanical signals such as the action of a product under the deep low-temperature working condition into electric signals to be transmitted. The design of the structure is widely applied to the carrier rocket pressurization conveying system at present, the mechanical movement positions of low-temperature movement mechanisms such as the cryogenic valves are converted into corresponding electric signals to be transmitted, and the information such as the movement of mechanical products in the cryogenic environment can be mastered at any place in the first time.
Description
Technical Field
The invention relates to an electric connector, in particular to an indicating device for the switching state of a cryogenic valve.
Background
In the existing carrier rocket pressurized conveying system in China, no indicating device is arranged for the opening and closing state of a low-temperature valve, the movement position of a low-temperature movement mechanism and the movement position of a low-temperature cylinder piston, and the development requirement of the carrier rocket cannot be met. The working temperature of the low-temperature valve, the low-temperature motion mechanism and the low-temperature cylinder piston is at least 20K, and the pressure of the ambient gas is at most 5 MPa.
The common electric connector structure adopts elements such as a common microswitch or a reed switch, a photoelectric sensor and the like, the lowest working temperature can only reach-60 ℃ generally, and the gas pressure of the working environment is only common atmospheric pressure. The electric connector has the advantages that the part playing a sealing role is an electric connector socket, the electric connector socket is sealed by expansion alloy and glass, the contact bodies made of metal materials are kept in the correct position arrangement by the insulator made of glass materials, and the contact bodies and the shell are mutually insulated, so that electric signals are transmitted correctly. Because the thermal expansion properties of the materials for manufacturing the shell, the contact body and the insulator are greatly different, when the electric connector used at normal temperature works in a low-temperature environment, the residual stress at each sealing interface is increased, even cracks of different degrees are generated, and further faults such as leakage or signal instantaneous interruption occur, so that signals cannot be transmitted correctly, and the electric connector cannot work normally.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the deep low-temperature zero-leakage sealing isolation structure of the electric connector is provided, and the problem that the electric connector structure in China is applied to indicating devices of the switching state of a low-temperature valve of a carrier rocket, a low-temperature movement mechanism and the movement position of a piston of a low-temperature cylinder is solved.
The technical solution adopted by the invention is as follows: a deep low-temperature zero-leakage sealing isolation structure of an electric connector comprises a shell, a mounting disc, an adhesive, a sealing gasket, a threaded fastener, a shell flange, a low-temperature microswitch, a flange cover, a binding post and an insulating sealing sleeve; the low-temperature microswitch and the mounting plate are both positioned in the shell, and the low-temperature microswitch is fixed on the mounting plate; the mounting disc is connected with the shell through threads, and the mounting disc is prevented from loosening through an adhesive after being connected; the flange cover is connected with the shell flange through a threaded fastener; the sealing gasket is positioned between the flange cover and the shell flange; the insulating sealing sleeve is fixed on the flange cover, and the wiring terminal is fixed in the insulating sealing sleeve.
The insulating seal cover and the flange cover are connected through a grabbing structure, sealing is kept through size design at normal temperature, the shrinkage rate of a non-metal material is small at low temperature, the shrinkage rate of a metal material is large, and sealing is more reliable.
Coating low-temperature glue DW-3 on the joint part of the insulating sealing sleeve and the flange cover, after gluing and fastening, carrying out circumferential closing on the upper end surface of the sealing joint part of the flange cover and the insulating sealing sleeve facing to the direction with axial deflection of 20 degrees, and then curing and drying the DW-3 glue at the temperature of 60 degrees for 4 hours.
The insulating sealing sleeve is made of non-metal Fs-3.
The flange cover is made of aluminum alloy rods 2A 14.
The switch also comprises an insulated conducting wire, a microswitch wiring terminal and a microswitch button.
The insulated conducting wire, the wiring end of the microswitch, the microswitch button and the low-temperature microswitch are integrally designed.
The microswitch button is associated with the mechanical motion part, when the mechanical motion part moves rightwards, the microswitch button is pushed, the low-temperature microswitch is switched on, and the wiring terminal sends a switching-on signal; when the mechanical motion part moves leftwards, the microswitch button is released, the microswitch button returns, the low-temperature microswitch is disconnected, and the binding post sends a disconnection signal; therefore, the movement of the mechanical moving part under the deep low-temperature working condition is converted into an electric signal in real time and transmitted out through the electric connector, and the movement information of the mechanical product under the deep low-temperature environment can be mastered at any place at the first time.
The lowest working temperature of the electric connector deep low temperature zero leakage sealing isolation structure reaches 20K, and the highest gas pressure in the shell reaches 5 MPa.
The electric connector deep low temperature zero leakage sealing isolation structure is used for sending an indication signal by the movement position of a valve clack of a deep low temperature valve product in a liquid hydrogen temperature area and determining the opening or closing state of the valve under the deep low temperature working condition in real time.
Compared with the prior art, the invention has the following beneficial effects:
1. the insulating sealing sleeve is connected with the flange cover through the grabbing structure, so that the sealing of the product under the low-temperature working condition is more firm and reliable than the sealing under the normal temperature, the deep low-temperature working condition can be sealed inside the flange cover, and an electric connector outside the flange cover can be in the natural environment condition;
2. the deep low-temperature zero-leakage sealing isolation structure can convert the motion of a mechanical motion part under the deep low-temperature working condition into an electric signal in real time, and the electric signal is transmitted out through an electric connector, so that the information such as the motion of a mechanical product under the deep low-temperature environment can be mastered at any place at the first time;
3. the deep low-temperature zero-leakage sealing isolation structure can enable the normal-temperature electric connector to be used in deep low-temperature working conditions, widens the application range of the normal-temperature electric connector, and greatly reduces the design cost and the test cost for researching the deep low-temperature electric connector by utilizing the mature process of the normal-temperature electric connector.
Drawings
Fig. 1 is a structure diagram of the deep low temperature zero leakage sealing isolation of the electric connector.
Fig. 2 is a schematic view of the relationship between the insulating sealing sleeve and the flange cover.
Detailed Description
As shown in FIG. 1, the deep low temperature zero leakage sealing isolation structure of an electrical connector of the present invention comprises a housing 1, a mounting plate 2, an adhesive 3, a gasket 4, a threaded fastener 9, a housing flange 10, and an insulated wire 11,
the low-temperature microswitch comprises a low-temperature microswitch 5, a flange cover 6, a wiring terminal 7, an insulating sealing sleeve 8, a microswitch wiring terminal 12 and a microswitch button 13;
the microswitch terminal 12, the microswitch button 13 and the low-temperature microswitch 5 are integrated; the low-temperature microswitch 5 and the mounting plate 2 are both positioned in the shell 1, and the low-temperature microswitch 5 is fixed on the mounting plate 2; the mounting disc 2 is connected with the shell 1 through threads, and is prevented from loosening through an adhesive 3 after being connected; the flange cover 6 is connected with a shell flange 10 through a threaded fastener 9; the sealing gasket 4 is positioned between the flange cover 6 and the shell flange 10; the insulating sealing sleeve 8 is fixed on the flange cover 6, and the wiring terminal 7 is fixed in the insulating sealing sleeve 8; the microswitch terminal 12 is connected to the terminal 7 through an insulated wire 11.
As shown in fig. 2, the insulating seal sleeve 8 is made of non-metal Fs-3, and the flange cover 6 is made of an aluminum alloy rod 2a 14; insulating seal cover 8 passes through claw type structural connection with flange lid 6, claw type structure is for stretching out the structure that is similar to tentacle shape, nests in flange lid 6, keeps sealed during the design normal atmospheric temperature of this connection position, keeps sealed through size design during the normal atmospheric temperature, and non-metallic material shrinkage factor is little during the low temperature, and the metallic material shrinkage factor is big, and is sealed more reliable. In addition, the joint part of the insulating sealing sleeve 8 and the flange cover 6 is coated with low-temperature glue DW-3, after the glue is tightly coated, the upper end surface of the sealing joint part of the flange cover 6 and the insulating sealing sleeve 8 faces the direction with axial deflection of 20 degrees to be circumferentially closed, and then the DW-3 glue is cured and dried at the temperature of 60 degrees for 4 hours. This grab type structural design for the product is sealed more normal atmospheric temperature under the low temperature operating mode and is fastened reliably, consequently can be sealed inside the blind flange with dark low temperature operating mode, makes the outside electric connector of blind flange can be in the natural environment condition.
The lowest working temperature of the deep low-temperature zero-leakage sealing isolation structure of the electric connector can reach 20K, and the highest gas pressure in the shell can reach 5 MPa.
The micro switch button 13 is associated with a mechanical motion part, when the mechanical motion part moves rightwards, the micro switch button 13 is pushed, the low-temperature micro switch 5 is switched on, and the wiring terminal 7 sends a switching-on signal; when the mechanical motion part moves leftwards, the micro switch button 13 is released, the micro switch button 13 returns, the low-temperature micro switch 5 is disconnected, and the wiring terminal 7 sends a disconnection signal. Therefore, the movement of the mechanical moving part under the deep low-temperature working condition can be converted into an electric signal in real time, the electric signal is transmitted out through the electric connector, and the information such as the movement of a mechanical product under the deep low-temperature environment can be mastered at any place in the first time.
At present, the electric connector isolation structure is mainly used for sending an indication signal by the movement position of a valve clack of a deep low-temperature valve product in a liquid hydrogen temperature zone and used for confirming the opening or closing state of a valve under the deep low-temperature working condition in real time.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make modifications and variations of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an electric connector dark low temperature zero leakage seals isolating structure which characterized in that: the low-temperature micro-switch comprises a shell (1), a mounting disc (2), an adhesive (3), a sealing gasket (4), a threaded fastener (9), a shell flange (10), a low-temperature micro-switch (5), a flange cover (6), a binding post (7) and an insulating sealing sleeve (8); the low-temperature microswitch (5) and the mounting disc (2) are both positioned in the shell (1), and the low-temperature microswitch (5) is fixed on the mounting disc (2); the mounting disc (2) is connected with the shell (1) through threads, and is anti-loose through an adhesive (3) after being connected; the flange cover (6) is connected with the shell flange (10) through a threaded fastener (9); the sealing gasket (4) is positioned between the flange cover (6) and the shell flange (10); the insulating sealing sleeve (8) is fixed on the flange cover (6), and the wiring terminal (7) is fixed in the insulating sealing sleeve (8).
2. The electrical connector cryogenic zero leakage seal isolation structure of claim 1, wherein: the insulating sealing sleeve (8) is connected with the flange cover (6) through a claw-shaped structure, sealing is kept through size design at normal temperature, the shrinkage rate of a non-metal material is small at low temperature, the shrinkage rate of a metal material is large, and sealing is more reliable.
3. The electrical connector cryogenic zero leakage seal isolation structure of claim 2, wherein: and coating low-temperature glue DW-3 on the joint part of the insulating sealing sleeve (8) and the flange cover (6), after gluing and fastening, carrying out circumferential closing on the upper end surface of the sealing connection part of the flange cover (6) and the insulating sealing sleeve (8) in the direction of axially deviating by 20 degrees, and then curing and drying the DW-3 glue at the temperature of 60 degrees for 4 hours.
4. The electrical connector cryogenic zero leakage seal isolation structure of claim 1, wherein: the insulating sealing sleeve (8) is made of non-metal Fs-3.
5. The electrical connector cryogenic zero leakage seal isolation structure of claim 1, wherein: the flange cover (6) is made of aluminum alloy rods 2A 14.
6. The electrical connector cryogenic zero leakage seal isolation structure of claim 1, wherein: the microswitch comprises an insulated conducting wire (11), a microswitch terminal (12) and a microswitch button (13).
7. The electrical connector cryogenic zero leakage seal isolation structure of claim 6, wherein: the insulated conducting wire (11), the microswitch terminal (12), the microswitch button (13) and the low-temperature microswitch (5) are designed integrally.
8. The electrical connector cryogenic zero leakage seal isolation structure of claim 6, wherein: the micro-switch button (13) is associated with a mechanical motion part, when the mechanical motion part moves rightwards, the micro-switch button (13) is pushed, the low-temperature micro-switch (5) is switched on, and the wiring terminal (7) sends a switching-on signal; when the mechanical motion part moves leftwards, the micro switch button (13) is released, the micro switch button (13) returns, the low-temperature micro switch (5) is disconnected, and the wiring terminal (7) sends a disconnection signal; therefore, the movement of the mechanical moving part under the deep low-temperature working condition is converted into an electric signal in real time and transmitted out through the electric connector, and the movement information of the mechanical product under the deep low-temperature environment can be mastered at any place at the first time.
9. The electrical connector cryogenic zero leakage seal isolation structure of any one of claims 1 to 8, wherein: the lowest working temperature of the electric connector deep low temperature zero leakage sealing isolation structure reaches 20K, and the highest gas pressure in the shell reaches 5 MPa.
10. The electrical connector cryogenic zero leakage seal isolation structure of any one of claims 1 to 8, wherein: the electric connector deep low temperature zero leakage sealing isolation structure is used for sending an indication signal by the movement position of a valve clack of a deep low temperature valve product in a liquid hydrogen temperature area and determining the opening or closing state of the valve under the deep low temperature working condition in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110674030.0A CN113437573B (en) | 2021-06-17 | 2021-06-17 | Electric connector deep low temperature zero leakage sealing isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110674030.0A CN113437573B (en) | 2021-06-17 | 2021-06-17 | Electric connector deep low temperature zero leakage sealing isolation structure |
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| Publication Number | Publication Date |
|---|---|
| CN113437573A true CN113437573A (en) | 2021-09-24 |
| CN113437573B CN113437573B (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110674030.0A Active CN113437573B (en) | 2021-06-17 | 2021-06-17 | Electric connector deep low temperature zero leakage sealing isolation structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134766A2 (en) * | 2000-03-17 | 2001-09-19 | Felten & Guilleaume AG | Gas-insulated switchgear with at least one circuit breaker |
| CN201004434Y (en) * | 2007-01-23 | 2008-01-09 | 上海乐研电气科技有限公司 | Gas density switch using gas compensation |
| CN201490441U (en) * | 2009-07-06 | 2010-05-26 | 苏州工业园区丰年科技有限公司 | Waterproof electric connector |
| CN203614875U (en) * | 2013-10-31 | 2014-05-28 | 北京宇航系统工程研究所 | Pressure annunciator |
| CN112531399A (en) * | 2020-12-03 | 2021-03-19 | 陕西航天机电环境工程设计院有限责任公司 | Cabin-penetrating sealing electric connector |
-
2021
- 2021-06-17 CN CN202110674030.0A patent/CN113437573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134766A2 (en) * | 2000-03-17 | 2001-09-19 | Felten & Guilleaume AG | Gas-insulated switchgear with at least one circuit breaker |
| CN201004434Y (en) * | 2007-01-23 | 2008-01-09 | 上海乐研电气科技有限公司 | Gas density switch using gas compensation |
| CN201490441U (en) * | 2009-07-06 | 2010-05-26 | 苏州工业园区丰年科技有限公司 | Waterproof electric connector |
| CN203614875U (en) * | 2013-10-31 | 2014-05-28 | 北京宇航系统工程研究所 | Pressure annunciator |
| CN112531399A (en) * | 2020-12-03 | 2021-03-19 | 陕西航天机电环境工程设计院有限责任公司 | Cabin-penetrating sealing electric connector |
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| Publication number | Publication date |
|---|---|
| CN113437573B (en) | 2022-10-21 |
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