CN205027465U - Two remaining pressure tube structures - Google Patents
Two remaining pressure tube structures Download PDFInfo
- Publication number
- CN205027465U CN205027465U CN201520332367.3U CN201520332367U CN205027465U CN 205027465 U CN205027465 U CN 205027465U CN 201520332367 U CN201520332367 U CN 201520332367U CN 205027465 U CN205027465 U CN 205027465U
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- pressure
- pin
- tube
- shell
- installation cavity
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Abstract
The utility model belongs to pressure sensing element packaging technique relates to a two remaining pressure tube structures. Two remaining pressure tube structures includes tube, insulator, pin, silicon oil, isolation diaphragm, pressure -sensitive chip and lead wire. Wherein, two pressure -sensitive chip settings are in the installation cavity of tube one end to all through pin connection to the pin that passes aperture in the tube, the pin is fixed in the tube aperture by the insulator insulation, isolation diaphragm seals up tube installation cavity mouth, and the installation cavity intussuseption is filled with silicon oil. The utility model discloses an external world and pressure -sensitive chip are kept apart to corrugated metal isolation diaphragm and silicon oil, and do not have the moving part in the structure, can be able to bear or endure to store and use for a long time, can satisfy sensor miniaturization, two remainings, high accuracy, highly reliable requirement, are applicable to two remaining wide range pressure sensor and use, have great practical application value.
Description
Technical field
The utility model belongs to pressure-sensing device encapsulation technology, relates to a kind of two remaining force pipe shell structure.
Background technology
As the means of acquisition of information, sensor technology is an important component part of infotech.Miniaturization, redundance, high precision and high reliability are developing directions of Modern Sensor Technology, in order to improve the reliability that high-precision pressure is measured under small size, need to realize the high-precision pressure survey of redundance under former installing space or less installing space condition.
Usually, when installing space is limited, the realization of redundance by setting up installation site at original installing space and sensor realizes, but still requires that redundance is measured, then need to be optimized structural design.Traditional dual-redundancy structure takes the mentality of designing merged from bottom to top, but the cylindrical-shaped structure of pressure-sensitive component limits the possibility that double redundant sensors volume continues to reduce, especially in high-tension measurement occasion.Two cylindrical-shaped structures need to sacrifice certain installing space to realize dual-redundancy structure, and its sealing affects each other, and the room for promotion of reliability is limited.
Utility model content
The purpose of this utility model is: provide that a kind of volume is little, reliability is high, two remaining force pipe shell structures of long service life.
The technical solution of the utility model is: a kind of two remaining force pipe shell structure, it comprises shell, insulator, pin, silicone oil, isolation diaphragm, pressure-sensitive chip and lead-in wire, wherein, two pressure-sensitive chips are arranged in the installation cavity of shell one end, and be all connected on the pin through aperture in shell by lead-in wire, pin is insulated by insulator and is fixed in shell aperture, and isolation diaphragm Dew Point installs accent, and is filled with silicone oil in installation cavity.
Induction chip periphery is provided with base of ceramic.
Shell pin output terminal is provided with the oil hole being communicated with installation cavity, this oil hole is provided with the ball sealer for sealing.
Shell outer setting has external connection screw.
Shell pin output terminal periphery is provided with sharp edge to be welded.
The utility model has the advantages that: described pair of remaining force pipe shell structure is the small pressure shell with band external thread, welding position, two independent pressure Measurement channel, and its compact conformation, volume is little.And high-voltage explosion-proof design can be realized by external thread, welding position, establish two pieces of pressure-sensitive chips simultaneously, have two remaining pressure measuring function, and inner sealing has silicone oil, effectively protects pressure-sensitive chip, reduce the contact with extraneous medium, two remaining pressure measurement reliability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 be shell, 2 are glass insulators, 3 are kovar alloy pins, 4 are base of ceramic, 5 be silicone oil (filling up space), 6 are wavy metal isolation diaphragms, 7 are pressure-sensitive chips and 8 is lead-in wires.
Embodiment
Below the utility model is described in further details.
Refer to Fig. 1, the two remaining force pipe shell structure of the utility model comprises shell, insulator, pin, silicone oil, isolation diaphragm, pressure-sensitive chip and lead-in wire.Wherein, two pressure-sensitive chips are arranged in the installation cavity of shell one end, and be all connected on the pin through aperture in shell by lead-in wire, above-mentioned pressure-sensitive chip 7 is for experiencing pressure, and pressure-dependent signal is delivered to outside by lead-in wire 8 and kovar alloy pin 3, and under two independently pressure-sensitive chip is in same pressure environment, the two redundancy design requirements under more small size restriction can be met, improve the reliability of auxiliary products.Pin is insulated by insulator and is fixed in shell aperture, and the structure realizing two remaining pressure-sensitive function is completely isolated on electrically.Described isolation diaphragm is glass ripple isolation diaphragm, and Dew Point installs accent, thus isolation is extraneous.And be filled with silicone oil, coated induction chip in the installation cavity being provided with pressure-sensitive chip, prevent foreign matter from contacting pressure-sensitive chip.
Described base of ceramic is arranged on induction chip periphery, to reduce filled with silicone oil amount in installation cavity, and expanding with heat and contract with cold to the adverse effect of induction chip when avoiding filled with silicone oil amount excessive.
Shell pin output terminal is provided with the oil hole being communicated with installation cavity, this oil hole is provided with the ball sealer for sealing, after silicone oil fills, by ball sealer sealed oil-filling hole.
Shell outer setting has external connection screw, and for thread seal, and shell pin output terminal periphery is provided with sharp edge to be welded, can carry out welded seal, thus can realize double seal, improves withstand voltage properties and the stability of encapsulation.
The two remaining force pipe shell structure of the utility model has outer installation screw thread and edge fit to be welded, can realize two-way independent pressure and measure.By wavy metal isolation diaphragm and silicone oil, the external world and pressure-sensitive chip to be kept apart, and without moving part in structure, can resistance to long storage periods and use, sensor miniaturization, two remaining, high precision, highly reliable requirement can be met, there is larger actual application value.
Claims (5)
1. a two remaining force pipe shell structure, it is characterized in that, comprise shell, insulator, pin, silicone oil, isolation diaphragm, pressure-sensitive chip and lead-in wire, wherein, two pressure-sensitive chips are arranged in the installation cavity of shell one end, and are all connected on the pin through aperture in shell by lead-in wire, and pin is insulated by insulator and is fixed in shell aperture, isolation diaphragm Dew Point installs accent, and is filled with silicone oil in installation cavity.
2. according to claim 1 pair of remaining force pipe shell structure, it is characterized in that, induction chip periphery is provided with base of ceramic.
3. according to claim 1 pair of remaining force pipe shell structure, is characterized in that, shell pin output terminal is provided with the oil hole being communicated with installation cavity, this oil hole is provided with the ball sealer for sealing.
4. according to claim 1 pair of remaining force pipe shell structure, it is characterized in that, shell outer setting has external connection screw.
5. according to claim 1 pair of remaining force pipe shell structure, is characterized in that, shell pin output terminal periphery is provided with sharp edge to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332367.3U CN205027465U (en) | 2015-05-21 | 2015-05-21 | Two remaining pressure tube structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332367.3U CN205027465U (en) | 2015-05-21 | 2015-05-21 | Two remaining pressure tube structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205027465U true CN205027465U (en) | 2016-02-10 |
Family
ID=55259988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520332367.3U Expired - Fee Related CN205027465U (en) | 2015-05-21 | 2015-05-21 | Two remaining pressure tube structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205027465U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696259A (en) * | 2018-12-20 | 2019-04-30 | 中国电子科技集团公司第四十八研究所 | A kind of redundant pressure sensor and preparation method |
| CN109959481A (en) * | 2017-12-14 | 2019-07-02 | 浙江三花制冷集团有限公司 | A kind of pressure sensor |
| CN112729621A (en) * | 2020-12-21 | 2021-04-30 | 苏州长风航空电子有限公司 | Dual-redundancy pressure sensor and manufacturing method thereof |
| CN114636506A (en) * | 2022-03-22 | 2022-06-17 | 厦门乃尔电子有限公司 | Dual-redundancy differential pressure sensor |
-
2015
- 2015-05-21 CN CN201520332367.3U patent/CN205027465U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959481A (en) * | 2017-12-14 | 2019-07-02 | 浙江三花制冷集团有限公司 | A kind of pressure sensor |
| CN109959481B (en) * | 2017-12-14 | 2021-03-26 | 浙江三花制冷集团有限公司 | Pressure sensor |
| CN109696259A (en) * | 2018-12-20 | 2019-04-30 | 中国电子科技集团公司第四十八研究所 | A kind of redundant pressure sensor and preparation method |
| CN112729621A (en) * | 2020-12-21 | 2021-04-30 | 苏州长风航空电子有限公司 | Dual-redundancy pressure sensor and manufacturing method thereof |
| CN114636506A (en) * | 2022-03-22 | 2022-06-17 | 厦门乃尔电子有限公司 | Dual-redundancy differential pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20180521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |