CN108827529B - Anti-freezing structure - Google Patents
Anti-freezing structure Download PDFInfo
- Publication number
- CN108827529B CN108827529B CN201810576697.5A CN201810576697A CN108827529B CN 108827529 B CN108827529 B CN 108827529B CN 201810576697 A CN201810576697 A CN 201810576697A CN 108827529 B CN108827529 B CN 108827529B
- Authority
- CN
- China
- Prior art keywords
- annular structure
- rubber
- pressure sensor
- cavity
- ring
- 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.)
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Links
- 238000007710 freezing Methods 0.000 title description 2
- 230000002528 anti-freeze Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an antifreezing structure, which comprises a shell; the pressure sensor is fixed in the shell; a rubber deformation structure is arranged in the shell and below the pressure sensor; the rubber deformation structure comprises an annular rubber plug and a supporting ring; a cavity is arranged between the annular rubber plug and the supporting ring. According to the invention, the rubber structure part in the sensor packaging structure is redesigned, and the air cavity is added in the rubber structure, so that the compression performance of the rubber structure is better, the stress generated by the volume expansion of liquid can be completely eliminated, and the pressure sensor can be effectively protected from damage.
Description
Technical Field
The invention relates to a device packaging structure, in particular to an antifreezing structure.
Background
In life or production, for some containers for containing liquid, a sensor for increasing the pressure of the liquid needs to be tested, for example, in an automobile exhaust emission filtering device, urea is used as a reducing agent to treat exhaust gas, and then a pressure sensor needs to be installed in the urea container to detect the capacity of the urea so as to be added in time; in a water pump, for example, a pressure sensor is also required to detect the pressure of the liquid flowing through the water pump. However, the liquid can freeze and expand at low temperature, stress is generated, damage is caused to the sensor, and how to package the sensor is a problem encountered in the industry.
In the prior art, as shown in fig. 1, a pressure sensor 2 is enclosed in a housing 1, a rubber structure 3 is spaced between the pressure sensor and a liquid, after the liquid expands, stress is generated to damage a device, and the rubber structure 3 is made of an elastic material, so that a part of stress can be counteracted. However, since the rubber structure is a whole and has no void, the volume compression is difficult and the stress cannot be completely eliminated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses an antifreezing structure.
The technical scheme of the invention is as follows:
an antifreeze structure comprising a housing; the pressure sensor is fixed in the shell; a rubber deformation structure is arranged in the shell and below the pressure sensor; the rubber deformation structure comprises an annular rubber plug and a supporting ring; a cavity is arranged between the annular rubber plug and the supporting ring.
The further technical scheme is that the section of the annular rubber plug is I-shaped and comprises an upper annular structure, a middle annular structure and a lower annular structure; the shape and the area of the upper annular structure and the lower annular structure are the same, and the positions of the upper annular structure and the lower annular structure correspond to each other; the upper surface of the upper annular structure is hermetically arranged with the lower side of the pressure sensor, and the lower surface of the lower annular structure is hermetically arranged with the shell; the middle annular structure is connected with the upper annular structure and the lower annular structure, and the area of the middle annular structure is smaller than that of the upper annular structure and the lower annular structure; the support ring is arranged between the upper annular structure and the lower annular structure; a cavity is arranged between the inner side of the supporting ring and the outer side of the middle annular structure.
The further technical proposal is that a circle of first concave ring is arranged between the middle annular structure and the upper annular structure; a circle of second concave rings are arranged between the middle annular structure and the lower annular structure; the first concave ring, the second concave ring, the inner side of the supporting ring and the outer side of the middle annular structure are communicated together to form a cavity.
The beneficial technical effects of the invention are as follows:
according to the invention, the rubber structure part in the sensor packaging structure is redesigned, and the air cavity is added in the rubber structure, so that the compression performance of the rubber structure is better, the stress generated by the volume expansion of liquid can be completely eliminated, and the pressure sensor can be effectively protected from damage.
Drawings
Fig. 1 is a cross-sectional view of the prior art.
Fig. 2 is a cross-sectional view of example 1.
FIG. 3 is a cross-sectional view of example 2.
Detailed Description
Fig. 2 is a cross-sectional view of example 1. As shown in fig. 2, the present invention includes a housing 1. The inside surface in the housing 1 is provided with an annular inwardly protruding placement platform, on which the pressure sensor 2 is placed and fixed in the housing 1. Inside the housing 1, below the pressure sensor 2, there is a cavity. Below the cavity is the part of the housing 1 where it meets the liquid, i.e. the liquid contact structure. A rubber deformation structure is arranged in the cavity. The rubber deformation structure includes an annular rubber stopper 3 and a support column 4.
The annular rubber stopper 3 has an I-shaped cross section and comprises an upper annular structure, a middle annular structure and a lower annular structure. The upper annular structure and the lower annular structure are identical in shape and area, the positions of the upper annular structure and the lower annular structure correspond to each other, the middle annular structure is connected with the upper annular structure and the lower annular structure, and the area of the middle annular structure is smaller than that of the upper annular structure and the lower annular structure. The upper surface of the upper annular structure is in sealing installation with the lower side of the pressure sensor 2, and the lower surface of the lower annular structure is in sealing installation with the shell 1.
The support ring 4 is arranged between the upper and lower annular structures. A space is arranged between the inner side of the support ring 4 and the outer side of the middle annular structure, and is a cavity 5.
FIG. 3 is a cross-sectional view of example 2. As shown in fig. 3, the rest of the structure of embodiment 2 is the same as that of embodiment 1, but the shape of the cavity 5 is different.
In fig. 3, a first ring is disposed between the middle ring structure and the upper ring structure, a second ring is disposed between the middle ring structure and the lower ring structure, and the first ring, the second ring, and the space between the inner side of the support ring 4 and the outer side of the middle ring structure are communicated together to form a cavity 5.
That is, in embodiment 1, the cross-sectional shape of the cavity is rectangular. In example 2, the cross-sectional shape of the cavity was -shaped. The cavity shape shown in example 2 is more conducive to deformation of the rubber.
In the invention, the rubber structure is not an integral body, but the cavity is arranged in the rubber structure, so that the annular rubber plug is easier to deform at the part of the cavity, and when the liquid generates stress, the annular rubber plug can completely eliminate the stress through deformation.
The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present invention are deemed to be included within the scope of the present invention.
Claims (1)
1. An antifreeze structure, characterized by comprising a housing (1); the pressure sensor (2) is fixed in the shell (1); a rubber deformation structure is arranged in the shell (1) and below the pressure sensor (2); the rubber deformation structure comprises an annular rubber plug (3) and a supporting ring (4); a cavity (5) is arranged between the annular rubber plug (3) and the supporting ring (4); the section of the annular rubber plug (3) is I-shaped and comprises an upper annular structure, a middle annular structure and a lower annular structure; the shape and the area of the upper annular structure and the lower annular structure are the same, and the positions of the upper annular structure and the lower annular structure correspond to each other; the upper surface of the upper annular structure is hermetically arranged with the lower side of the pressure sensor (2), and the lower surface of the lower annular structure is hermetically arranged with the shell (1); the middle annular structure is connected with the upper annular structure and the lower annular structure, and the area of the middle annular structure is smaller than that of the upper annular structure and the lower annular structure; the support ring (4) is arranged between the upper annular structure and the lower annular structure; a cavity (5) is arranged between the inner side of the supporting ring (4) and the outer side of the middle annular structure; a circle of first concave rings are arranged between the middle annular structure and the upper annular structure; a circle of second concave rings are arranged between the middle annular structure and the lower annular structure; the first concave ring, the second concave ring and the space between the inner side of the supporting ring (4) and the outer side of the middle annular structure are communicated together to form a cavity (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576697.5A CN108827529B (en) | 2018-06-05 | 2018-06-05 | Anti-freezing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576697.5A CN108827529B (en) | 2018-06-05 | 2018-06-05 | Anti-freezing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108827529A CN108827529A (en) | 2018-11-16 |
| CN108827529B true CN108827529B (en) | 2024-01-12 |
Family
ID=64144195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810576697.5A Active CN108827529B (en) | 2018-06-05 | 2018-06-05 | Anti-freezing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108827529B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11428593B2 (en) * | 2019-11-20 | 2022-08-30 | Honeywell International Inc. | Methods and apparatuses for providing freeze resistant sensing assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344380A (en) * | 2013-06-13 | 2013-10-09 | 安徽艾可蓝节能环保科技有限公司 | Anti-freezing ceramic pressure sensor packaging piece |
| CN204439272U (en) * | 2015-02-03 | 2015-07-01 | 无锡盛迈克传感技术有限公司 | A kind of defroster of pressure transducer |
| CN208476453U (en) * | 2018-06-05 | 2019-02-05 | 无锡莱顿电子有限公司 | Anti-freezing structure |
-
2018
- 2018-06-05 CN CN201810576697.5A patent/CN108827529B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344380A (en) * | 2013-06-13 | 2013-10-09 | 安徽艾可蓝节能环保科技有限公司 | Anti-freezing ceramic pressure sensor packaging piece |
| CN204439272U (en) * | 2015-02-03 | 2015-07-01 | 无锡盛迈克传感技术有限公司 | A kind of defroster of pressure transducer |
| CN208476453U (en) * | 2018-06-05 | 2019-02-05 | 无锡莱顿电子有限公司 | Anti-freezing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108827529A (en) | 2018-11-16 |
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