CN212621000U - High-temperature high-pressure radar sensor - Google Patents
High-temperature high-pressure radar sensor Download PDFInfo
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- CN212621000U CN212621000U CN202021424256.2U CN202021424256U CN212621000U CN 212621000 U CN212621000 U CN 212621000U CN 202021424256 U CN202021424256 U CN 202021424256U CN 212621000 U CN212621000 U CN 212621000U
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Abstract
The utility model discloses a high temperature high pressure radar sensor belongs to radar sensor technical field. The sensor comprises a sensor protection shell, a joint compression ring, an SMB joint, a signal coupling piece, a transmitting cone compression piece, a ceramic transmitting cone, a graphite gasket and a horn antenna; a horn antenna is connected below the sensor protection shell; the inside SMB that is provided with of sensor protective housing connects, and SMB connects to cup joint and is fixed with the joint clamp ring, and SMB connects the below and is connected with the signal coupling spare. The transmitting cone is made of a ceramic material instead of the original PTFE material, the ceramic has a sharper angle than PTFE and is more resistant to high temperature, and the high-temperature resistance of the radar sensor is improved; under the powerful pressfitting through the transmission awl pressure part, the graphite gasket can keep apart ceramic transmission awl rear end, and the graphite gasket also can long-term stable use in harsh operating mode condition, has good corrosion resistance, compression resilience, high strength nature, has improved radar sensor's resistance to pressure.
Description
Technical Field
The utility model relates to a high temperature high pressure radar sensor belongs to radar sensor technical field.
Background
In the existing radar liquid level meter, a transmitting cone in a radar sensor is usually made of PTFE (polytetrafluoroethylene), so that the pressure resistance of the radar sensor is generally about 4MPa, the temperature resistance is 200 ℃ at most, the application range of the radar sensor is greatly limited by the limited temperature and pressure resistance, and the material level measurement is inconvenient in many high-temperature and high-pressure places.
Disclosure of Invention
The utility model discloses the technical problem that will solve lies in: the utility model provides a high temperature high pressure radar sensor, it has solved among the prior art radar level gauge used radar sensor temperature resistant withstand voltage nature not good, has restricted radar level gauge's level measurement application scope's problem.
The utility model discloses the technical problem that will solve takes following technical scheme to realize:
a high-temperature and high-pressure radar sensor comprises a sensor protective shell, a joint compression ring, an SMB joint, a signal coupling piece, a transmitting cone compression piece, a ceramic transmitting cone, a graphite gasket and a horn antenna;
a horn antenna is connected below the sensor protection shell;
an SMB joint is arranged in the sensor protection shell, a joint compression ring is fixedly sleeved on the SMB joint, and the lower part of the SMB joint is connected with a signal coupling piece;
the lower part of the signal coupling piece is connected with the planar end of the ceramic emission cone, and the tip end of the ceramic emission cone extends out of the sensor protective shell to the horn antenna;
and a graphite gasket is fixedly sleeved on the ceramic emission cone, and an emission cone pressing piece is arranged above the graphite gasket.
As a preferred example, the horn antenna is made of stainless steel.
As a preferable example, the sensor protective shell and the horn antenna are fixed through screws.
The utility model has the advantages that:
(1) the transmitting cone is made of a ceramic material instead of the original PTFE material, the ceramic has a sharper angle than PTFE and is more resistant to high temperature, and the high-temperature resistance of the radar sensor is improved;
(2) under the powerful pressfitting through the transmission awl pressure part, the graphite gasket can keep apart ceramic transmission awl rear end, and the graphite gasket also can long-term stable use in harsh operating mode condition, has good corrosion resistance, compression resilience, high strength nature, has improved radar sensor's resistance to pressure.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure taken along the direction A-A in FIG. 1.
In the figure: sensor protective housing 1 connects clamp ring 2, SMB connects 3, signal coupling piece 4, transmission awl compact heap 5, ceramic transmission awl 6, graphite gasket 7, horn antenna 8, screw 9.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.
As shown in fig. 1-2, a high-temperature and high-pressure radar sensor comprises a sensor protection shell 1, a joint compression ring 2, an SMB joint 3, a signal coupling piece 4, a transmitting cone compression piece 5, a ceramic transmitting cone 6, a graphite gasket 7 and a horn antenna 8;
a horn antenna 8 is connected below the sensor protection shell 1;
an SMB joint 3 is arranged in the sensor protection shell 1, a joint compression ring 2 is fixedly sleeved on the SMB joint 3, and a signal coupling piece 4 is connected below the SMB joint 3;
the lower part of the signal coupling piece 4 is connected with the planar end of a ceramic emission cone 6, and the tip of the ceramic emission cone 6 extends out of the sensor protection shell 1 into the horn antenna 8;
a graphite gasket 7 is fixedly sleeved on the ceramic emission cone 6, and an emission cone pressing piece 5 is arranged above the graphite gasket 7.
The horn antenna 8 is made of stainless steel.
The sensor protective shell 1 and the horn antenna 8 are fixed through screws.
The working principle is as follows:
the microwave generated in the microwave module is transmitted along a high-frequency cable, one end of the high-frequency cable is connected to an SMB joint 3, the SMB joint 3 is connected with a signal coupling piece 4, the microwave signal is coupled into a waveguide through the signal coupling piece 4, the waveguide adopts a ceramic emission cone 6, the waveguide guides the microwave to a horn antenna 8, the waveguide usually adopts a low-dielectric material, the low-dielectric material is processed into a taper shape at the transition part from the waveguide to the horn antenna 8, the angle of the taper shape depends on the dielectric constant of the material, the ceramic material has a sharper angle than PTFE, the microwave is emitted from the ceramic emission cone 6, then the horn antenna 8 focuses the electromagnetic wave to a target to be measured, meanwhile, the electromagnetic wave returned after emission is collected and transmitted to an electronic module for processing, under the strong pressing of a ceramic emission cone pressing piece 5, a graphite gasket 7 can well isolate the rear end of the ceramic emission cone 6, the graphite gasket 7 can be stably used for a long time under severe working conditions, and has good corrosion resistance, compression resilience and high strength. The SMB joint 3 and the signal coupling piece 4 are reliably connected with the ceramic emission cone pressing piece 5 by the joint pressing ring 2; the ceramic emission cone 6 and the graphite gasket 7 can completely bear the temperature of 370 ℃ and the pressure of 16MPa through testing and work normally; sensor protective housing 1 mainly used connects the horn antenna 8 of electronic module shell and sensor, is connected through screw 9 between sensor protection 1 and the horn antenna 8, conveniently dismantles.
After the design test of the radar sensor is improved, the working temperature of the radar sensor is increased from 200 ℃ to 370 ℃ and the working pressure is increased from 4MPa to 16MPa, so that the application range of the product is greatly expanded, and more choices are provided for level measurement in high-temperature and high-pressure occasions.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A high-temperature and high-pressure radar sensor is characterized by comprising a sensor protective shell, a connector pressing ring, an SMB connector, a signal coupling piece, a transmitting cone pressing piece, a ceramic transmitting cone, a graphite gasket and a horn antenna;
a horn antenna is connected below the sensor protection shell;
an SMB joint is arranged in the sensor protection shell, a joint compression ring is fixedly sleeved on the SMB joint, and the lower part of the SMB joint is connected with a signal coupling piece;
the lower part of the signal coupling piece is connected with the planar end of the ceramic emission cone, and the tip end of the ceramic emission cone extends out of the sensor protective shell to the horn antenna;
and a graphite gasket is fixedly sleeved on the ceramic emission cone, and an emission cone pressing piece is arranged above the graphite gasket.
2. A high temperature and high pressure radar sensor according to claim 1, wherein the horn antenna is made of stainless steel.
3. A high-temperature and high-pressure radar sensor as recited in claim 1, wherein the sensor protective casing and the horn antenna are fixed by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424256.2U CN212621000U (en) | 2020-07-17 | 2020-07-17 | High-temperature high-pressure radar sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424256.2U CN212621000U (en) | 2020-07-17 | 2020-07-17 | High-temperature high-pressure radar sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212621000U true CN212621000U (en) | 2021-02-26 |
Family
ID=74720883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021424256.2U Active CN212621000U (en) | 2020-07-17 | 2020-07-17 | High-temperature high-pressure radar sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212621000U (en) |
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2020
- 2020-07-17 CN CN202021424256.2U patent/CN212621000U/en active Active
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