CN218955982U - Sealing structure of pressure sensor - Google Patents
Sealing structure of pressure sensor Download PDFInfo
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- CN218955982U CN218955982U CN202223486930.1U CN202223486930U CN218955982U CN 218955982 U CN218955982 U CN 218955982U CN 202223486930 U CN202223486930 U CN 202223486930U CN 218955982 U CN218955982 U CN 218955982U
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Abstract
The utility model discloses a sealing structure of a pressure sensor, which comprises: the MEMS pressure sensor is used for detecting the water body; the connecting sealing part is used for installing the MEMS pressure sensor; the protection sealing part is used for protecting the MEMS pressure sensor and installing the MEMS pressure sensor inside the connection sealing part; the protection sealing part comprises a first protection sleeve, and a plurality of first water blocking rings are fixedly connected to the outer wall of the first protection sleeve at equal intervals. According to the sealing structure of the pressure sensor, the protection connecting part replaces an O-shaped ring to protect the cylindrical detection end, so that the cylindrical detection end is more comprehensively protected and is prevented from being extruded; the water-blocking ring and the sealing ring are matched to prevent water flow from entering the connecting sealing part, so that the influence on the MEMS pressure sensor main body is avoided, and the long-term use of the MEMS pressure sensor is ensured.
Description
Technical Field
The utility model relates to the technical field of pressure sensor sealing, in particular to a sealing structure of a pressure sensor.
Background
In the prior art, MEMS pressure sensors are thin film elements that deform when subjected to pressure.
In the exposed O-shaped ring normal sealing structure, the O-shaped ring normal seals in a single sealing mode; the O-shaped ring is exposed, the aging speed is high, the service life is greatly reduced, and the sealing failure is easy to cause for a long time.
Through retrieving, chinese patent application No. 202022610619.8 discloses a seal structure of a pressure sensor, including: the sensor comprises a sensor body, an O-shaped ring and a valve seat, wherein the valve seat is arranged in a hollow outer cylinder at the lower part of the sensor body, a circle of groove is formed in the lower part of the hollow outer cylinder, the outer side of the groove is the lower edge part of the hollow outer cylinder, a concave table top is arranged on the valve seat, the concave table top and the groove form a sealing cavity, and the O-shaped ring is arranged in the sealing cavity.
The above patent suffers from the following disadvantages: the detection end of the MEMS pressure sensor is cylindrical, and is generally hidden in the installation process, so that the detection end is prevented from being damaged; the sealing structure adopted by the device still adopts the O-shaped ring to protect the detection end, and in the installation process, the O-shaped ring is extruded and is easy to deform, so that the detection end cannot be well protected.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a sealing structure of a pressure sensor.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a sealing structure of a pressure sensor, comprising:
the MEMS pressure sensor is used for detecting the water body;
the connecting sealing part is used for installing the MEMS pressure sensor;
the protection sealing part is used for protecting the MEMS pressure sensor and installing the MEMS pressure sensor inside the connection sealing part;
the protection sealing part comprises a first protection sleeve, a plurality of first water blocking rings are fixedly connected to the outer wall of the first protection sleeve at equal intervals, a sealing sleeve is fixedly connected to the bottom end of the first protection sleeve, and a connecting sleeve is fixedly connected to the bottom end of the sealing sleeve.
As still further aspects of the utility model: the MEMS pressure sensor comprises an MEMS pressure sensor main body, wherein the top end of the MEMS pressure sensor main body is fixedly connected with a cylindrical detection end, and the bottom end of the MEMS pressure sensor main body is electrically connected with a connecting wire.
As still further aspects of the utility model: the connecting sealing part comprises a first connector, a six-edge head is fixedly connected to the bottom end of the first connector, and a limiting plate is fixedly connected to the bottom end of the six-edge head.
As still further aspects of the utility model: the lower surface of limiting plate fixedly connected with connector two, the inside fixed mounting of connector two has the cover that presses, the top of cover is provided with the rubber circle.
As still further aspects of the utility model: the top of the first protective sleeve is provided with a first clamping groove, the groove wall at the bottom of the first clamping groove is provided with a second inserting hole, and the inside of the first clamping groove is clamped with a first protective sleeve.
As still further aspects of the utility model: the cylindrical detection end is inserted into the second jack, and the bottom end of the MEMS pressure sensor main body is attached to the rubber ring.
As still further aspects of the utility model: the first protective sleeve is replaced by a second protective sleeve, a limiting clamping block is fixedly connected to the bottom end of the second protective sleeve, and the limiting clamping block is clamped inside the sealing sleeve.
As still further aspects of the utility model: the first protective sleeve is replaced by a second protective sleeve, and the second protective sleeve is clamped at the top end of the second protective sleeve.
Compared with the prior art, the utility model provides a sealing structure of a pressure sensor, which has the following beneficial effects:
1. according to the sealing structure of the pressure sensor, the protection connecting part replaces an O-shaped ring to protect the cylindrical detection end, so that the cylindrical detection end is more comprehensively protected and is prevented from being extruded; the water-blocking ring and the sealing ring are matched to prevent water flow from entering the connecting sealing part, so that the influence on the MEMS pressure sensor main body is avoided, and the long-term use of the MEMS pressure sensor is ensured.
2. According to the sealing structure of the pressure sensor, through the multi-order appearance structure of the protection sealing part, the water flow impact born by the MEMS pressure sensor main body is smaller, the cylindrical detection end is ensured to be in the working process, and more accurate data test can be performed.
The device has the advantages that the parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has a simple structure and is convenient to operate.
Drawings
FIG. 1 is a schematic view of the overall assembly of the present utility model;
FIG. 2 is a schematic cross-sectional view of a connection seal of the present utility model;
FIG. 3 is a schematic diagram of an assembled structure of the protection seal and MEMS pressure sensor of the present utility model;
FIG. 4 is a schematic view of a protective seal portion according to the present utility model;
fig. 5 is a schematic structural view of a protective seal portion according to a second embodiment of the present utility model.
In the figure: 1. a first connector; 2. a hexagonal head; 3. a limiting plate; 4. a second connector; 5. pressing the sleeve; 6. a first protective sleeve; 7. a rubber ring; 8. sealing sleeve; 9. connecting sleeves; 10. a MEMS pressure sensor body; 11. connecting wires; 12. a cylindrical detection end; 13. a first protective sleeve; 14. a jack I; 15. a clamping groove I; 16. a second jack; 17. a first water blocking ring; 18. a seal ring; 19. limiting through grooves; 20. a clamping groove II; 21. a second protective sleeve; 22. a water blocking ring II; 23. a limit clamping block; 24. a protective sleeve II; 25. and a clamping ring is connected.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
A seal structure for a pressure sensor, as shown in fig. 1-5, comprising:
the MEMS pressure sensor is used for detecting the water body;
the MEMS pressure sensor comprises an MEMS pressure sensor main body 10, wherein a cylindrical detection end 12 is integrally formed at the top end of the MEMS pressure sensor main body 10, and the top end of the cylindrical detection end 12 is provided with a detection port and is directly contacted with a water body;
the bottom end of the MEMS pressure sensor main body 10 is electrically connected with a connecting wire 11, and the connecting wire 11 is connected with the MEMS pressure sensor main body 10 in a soldering mode and is used for power supply and data transmission of the MEMS pressure sensor main body 10.
The connecting sealing part is used for installing the MEMS pressure sensor and is connected with the valve seat and the pipeline, so that the cylindrical detection end 12 extends into the pipeline where the fluid flows and is directly contacted with the water body;
the connecting sealing part comprises a first connector 1, the outer wall of the first connector 1 is provided with threads, and the connecting sealing part can be directly arranged on the valve seat in a threaded manner; the bottom integrated into one piece of connector 1 has six arris heads 2, and six arris heads 2 work such as being convenient for use spanner are installed or are dismantled connecting seal portion, and the bottom integrated into one piece of six arris heads 2 has limiting plate 3.
The lower surface integrated into one piece of limiting plate 3 has connector two 4, and the screw thread is all offered to the outer wall and the inner wall of connector two 4, and pressure cover 5 is installed to the internal screw thread of connector two 4, and the top of pressure cover 5 is provided with rubber circle 7.
The rubber ring 7 is attached to the bottom end of the MEMS pressure sensor main body 10, the pressing sleeve 5 is screwed into the connector II 4, and the pressing sleeve 5 presses the MEMS pressure sensor main body 10 through the rubber ring 7, so that the combination of the MEMS pressure sensor and the protection sealing part is fixed in the connecting sealing part; the connecting wire 11 passes through the inner space of the press sleeve 5.
The protection sealing part is used for protecting the MEMS pressure sensor and installing the MEMS pressure sensor in the connecting sealing part, so that the cylindrical detection end 12 is prevented from being damaged and the cylindrical detection end 12 is prevented from being extruded;
the protection sealing part comprises a sealing part I and a sealing part II, the sealing part I and the sealing part II both comprise a sealing sleeve 8, the bottom end of the sealing sleeve 8 is integrally formed with a connecting sleeve 9, the connecting sleeve 9 is attached to the top end of the MEMS pressure sensor main body 10, and the MEMS pressure sensor main body 10 is protected by being matched with a rubber ring 7.
The top end of the sealing sleeve 8 is integrally provided with a plurality of concentric sealing rings 18, the sealing rings 18 are attached to the inner cavity of the connecting sealing part, and water blocking water flow contacts with the MEMS pressure sensor main body 10 to protect the MEMS pressure sensor main body 10.
The first sealing part comprises a first protective sleeve 6, a plurality of first water blocking rings 17 are formed on the outer wall of the first protective sleeve 6 at equal intervals in an integrated mode, the first water blocking rings 17 are tightly attached to the inner wall of the first connector 1, and water is prevented from entering the connecting sealing part through a gap between the first protective sleeve 6 and the inner wall of the first connector 1.
The bottom of the first protecting sleeve 6 and the sealing sleeve 8 are integrally formed, a first clamping groove 15 is formed in the top of the first protecting sleeve 6, a second inserting hole 16 is formed in the groove wall of the bottom of the first clamping groove 15, a first protecting sleeve 13 is clamped in the first clamping groove 15, a first inserting hole 14 is formed in the top of the first protecting sleeve 13, and the first inserting hole 14 corresponds to the second inserting hole 16.
The cylindrical detection end 12 is inserted into the second jack 16 and the first jack 14 and is positioned in the first connector 1.
The second sealing part comprises a second protective sleeve 21, a plurality of second water blocking rings 22 are integrally formed on the outer wall of the second protective sleeve 21 at equal intervals, a limiting clamping block 23 is integrally formed on the bottom end of the second protective sleeve 21, a limiting through groove 19 is formed in the top end of the sealing sleeve 8 corresponding to the second sealing part, and the limiting clamping block 23 is clamped inside the limiting through groove 19.
The first protective sleeve 13 is replaced by a second protective sleeve 24, a connecting clamping ring 25 is integrally formed at the bottom end of the second protective sleeve 24, a clamping groove II 20 is formed in an order tube of the second protective sleeve 21, and a groove matched with the connecting clamping ring 25 is formed in the inner wall of the bottom end of the clamping groove II 20.
The first sealing part is different from the second sealing part in that: the first protecting sleeve 6 and the sealing sleeve 8 are integrally formed, the friction force is large when the first protecting sleeve is connected with the cylindrical detecting end 12, the mounting is laborious, but the first sealing part is integrally formed, and the sealing performance and the protecting capability are high;
the second protective sleeve 21 is clamped with the sealing sleeve 8, openings are formed in one side of the second protective sleeve 21 and one side of the second protective sleeve 24, so that the second protective sleeve 24 can be conveniently clamped outside the cylindrical detection end 12, and the openings of the second protective sleeve 24 and the second protective sleeve 21 can at least maintain a ninety-degree dislocation included angle during installation; and the sealability is slightly inferior to that of the sealing part.
Working principle:
referring to fig. 1 to 5, the first sealing part and the second sealing part have the same function and are selected according to requirements;
in the MEMS pressure sensor sealing installation process;
firstly, the cylindrical detection end 12 is protected through the protection sealing part, the cylindrical detection end 12 passes through the first jack 14 and the second jack 16, and the first protection sleeve 13 is sleeved on the top end of the cylindrical detection end 12, so that the capability of the cylindrical detection end 12 for resisting the impact force of water flow is enhanced;
then the combination of the MEMS pressure sensor and the protection sealing part is installed in the connection sealing part, the connection lead 11 passes through the rubber ring 7 and the pressing sleeve 5, the pressing sleeve 5 is screwed into the connector II 4, the pressing sleeve 5 is continuously screwed, and the MEMS pressure sensor main body 10 is fixed in the connection sealing part through the cooperation of the rubber ring 7 and the connecting sleeve 9;
finally, the whole device is arranged on the valve seat or the water passing pipeline through the first connector 1.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. A sealing structure of a pressure sensor, comprising:
the MEMS pressure sensor is used for detecting the water body;
the connecting sealing part is used for installing the MEMS pressure sensor;
the protection sealing part is used for protecting the MEMS pressure sensor and installing the MEMS pressure sensor inside the connection sealing part;
the protection sealing part comprises a first protection sleeve (6), a plurality of first water blocking rings (17) are fixedly connected to the outer wall of the first protection sleeve (6) at equal intervals, a sealing sleeve (8) is fixedly connected to the bottom end of the first protection sleeve (6), and a connecting sleeve (9) is fixedly connected to the bottom end of the sealing sleeve (8).
2. The sealing structure of a pressure sensor according to claim 1, wherein: the MEMS pressure sensor comprises a MEMS pressure sensor main body (10), wherein a cylindrical detection end (12) is fixedly connected to the top end of the MEMS pressure sensor main body (10), and a connecting wire (11) is electrically connected to the bottom end of the MEMS pressure sensor main body (10).
3. The sealing structure of a pressure sensor according to claim 1, wherein: the connecting sealing part comprises a first connector (1), a six-edge head (2) is fixedly connected to the bottom end of the first connector (1), and a limiting plate (3) is fixedly connected to the bottom end of the six-edge head (2).
4. A sealing structure of a pressure sensor according to claim 3, wherein: the lower surface of limiting plate (3) fixedly connected with connector two (4), the inside fixed mounting of connector two (4) has pressure cover (5), the top of pressure cover (5) is provided with rubber circle (7).
5. The sealing structure of a pressure sensor according to claim 1, wherein: the top of the first protective sleeve (6) is provided with a first clamping groove (15), the bottom groove wall of the first clamping groove (15) is provided with a second inserting hole (16), and the inside of the first clamping groove (15) is clamped with a first protective sleeve (13).
6. A sealing structure of a pressure sensor according to claim 2, characterized in that: the cylindrical detection end (12) is inserted into the second jack (16), and the bottom end of the MEMS pressure sensor main body (10) is attached to the rubber ring (7).
7. The sealing structure of a pressure sensor according to claim 1, wherein: the first protective sleeve (6) is replaced by a second protective sleeve (21), a limiting clamping block (23) is fixedly connected to the bottom end of the second protective sleeve (21), and the limiting clamping block (23) is clamped inside the sealing sleeve (8).
8. The sealing structure of a pressure sensor according to claim 5, wherein: the first protective sleeve (13) is replaced by a second protective sleeve (24), and the second protective sleeve (24) is clamped at the top end of the second protective sleeve (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486930.1U CN218955982U (en) | 2022-12-27 | 2022-12-27 | Sealing structure of pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486930.1U CN218955982U (en) | 2022-12-27 | 2022-12-27 | Sealing structure of pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218955982U true CN218955982U (en) | 2023-05-02 |
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ID=86105728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223486930.1U Active CN218955982U (en) | 2022-12-27 | 2022-12-27 | Sealing structure of pressure sensor |
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| Country | Link |
|---|---|
| CN (1) | CN218955982U (en) |
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- 2022-12-27 CN CN202223486930.1U patent/CN218955982U/en active Active
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