CN211527545U - Arc radar level meter - Google Patents
Arc radar level meter Download PDFInfo
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- CN211527545U CN211527545U CN201922254713.1U CN201922254713U CN211527545U CN 211527545 U CN211527545 U CN 211527545U CN 201922254713 U CN201922254713 U CN 201922254713U CN 211527545 U CN211527545 U CN 211527545U
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- level gauge
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- circular arc
- transceiver
- radar level
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Abstract
The utility model provides an arc type radar level gauge, include: the level gauge comprises a level gauge shell, a transceiver, a processing circuit and a probe; the level gauge housing comprises a first end and a second end which are oppositely arranged; the transceiver is arranged in the level meter shell; the transceiver is used for transmitting radar transmission signals and receiving radar return signals reflected at the target object; processing circuitry is connected to the transceiver and configured to determine the level based on a relationship between the radar transmission signal and the radar return signal. A probe is disposed within the level gauge housing and extends from a first end to a second end, the probe being configured to direct a radar transmit signal toward the target object and to direct a reflected radar return signal back to the transceiver. The end face of the second end close to the target is an arc face, so that the possibility that condensate or dust of an object is attached to the end face of the second end close to the target can be reduced, and the measurement accuracy is improved.
Description
Technical Field
The utility model relates to a mechano-electronic technology field, in particular to arc type radar level meter.
Background
Measuring the level of objects, fluids, particulate compounds or other materials stored in tanks is a fundamental industry need. Historically, several technologies have been used, and the last decade radar has become the dominant method for high quality measurements. These radar devices use antennas to transmit electromagnetic waves towards the material being monitored and to receive electromagnetic echoes reflected on the surface of the material being monitored. Currently, a large number of level gauges for radar level gauging are installed worldwide, and among them, the radar method has a growing percentage, and the circular arc type radar level gauges are increasingly used in the field of material gauging.
In modern industrial level measurement applications, a pulse arc type radar level gauge is widely applied to level measurement as a non-contact arc type radar level gauge. The principle of the pulse circular-arc radar level gauge is that pulse electromagnetic waves are transmitted by an antenna device, reach the surface of a measured object, are reflected by the surface of the measured object and then are received by an antenna, and the distance between the meter and the surface of the measured object can be calculated through the time difference between the transmission and the reception of the electromagnetic waves. The antenna device is used as a transmitting and receiving part of electromagnetic waves, influences the strength of transmitted and received signals and determines whether the instrument works normally. In the measurement process, environmental conditions can produce certain influence to it, when some measured medium appears volatilizing, when crystallization phenomenon or the environment has the dust, condensation thing or dust can be attached to on the measurement of circular arc type radar level meter, when the electromagnetic wave passes through the measurement, just can reflect at the adhesion layer on the measurement, make the electromagnetic wave normally launch to the measured object surface or can not receive the electromagnetic wave that reflects from the measured object surface, influenced the transmission and the receipt of electromagnetic wave, make the measurement influenced.
Disclosure of Invention
An object of the utility model is to provide an arc type radar level meter to easily be adhered to by the coagulum or the dust of the object that awaits measuring in solving current arc type radar level meter, thereby influence measurement accuracy's technical problem.
In order to solve the technical problem, the utility model provides an arc type radar level gauge for measure the level of target object in the storage tank, include:
a level gauge housing including first and second oppositely disposed ends;
a transceiver disposed within the level gauge housing, the transceiver for transmitting a radar transmit signal to the target and for receiving a radar return signal reflected by the target;
processing circuitry connected to the transceiver and configured to determine a level based on a relationship between the radar transmit signal and the radar return signal; and the number of the first and second groups,
a probe disposed within the level gauge housing and extending from the first end to the second end, the probe configured to direct the radar transmit signal toward the target object and to direct the reflected radar return signal back to the transceiver;
wherein, the terminal surface of second end is the cambered surface.
Optionally, in the circular arc type radar level gauge, the level gauge housing is a hollow cylindrical structure, and the first end and the second end of the hollow cylindrical structure have a diameter larger than a diameter of a middle portion of the level gauge housing.
Optionally, in the circular arc type radar level gauge, the circular arc type radar level gauge further comprises a connecting member for connecting with the storage tank, the connecting member being located between the first end and the second end.
Optionally, in the circular arc type radar level gauge, the connecting member is detachably connected to the level gauge housing.
Optionally, in the circular arc type radar level gauge, a seal is provided between the connection piece and the tank.
Optionally, in the circular-arc radar level gauge, a mounting hole is formed in the storage tank, and an internal thread is formed in the mounting hole; and the connecting piece is provided with an external thread, and the external thread is connected with the internal thread.
Optionally, in the circular arc radar level gauge, a fixing groove is formed in the connecting member, the fixing groove is an annular groove formed along the circumferential direction of the level gauge shell, and the fixing groove is used for being connected with the storage tank in a clamping manner.
Optionally, in the circular arc radar level gauge, a mounting hole is formed in the storage tank, the fixing groove is clamped to the edge of the mounting hole, and the fixing groove is in interference fit with the edge of the mounting hole.
Optionally, in the circular arc type radar level gauge, the material of the second end is one of PTFE, PP, PE, F46 and a meta-fluorine material
Optionally, in the circular arc type radar level gauge, the material of the first end is one of PTFE, PP, PE, F46, a meta-fluoro material, or stainless steel.
Compared with the prior art, the utility model has the advantages of:
the second end of the level meter shell is set to be the arc surface, condensate or dust of an object is not easy to gather due to the arc surface, so that the end surface of the second end can be prevented from being attached by the condensate or dust of the object, the probe guides the radar transmitting signal towards the target object and guides the reflected radar return signal back to the transceiver, and the condensate or dust of the object is not attached to the end surface of the second end, so that the sending and receiving of the signal can not be influenced, and the measuring accuracy is improved.
Drawings
Fig. 1 is a schematic structural diagram of an arc radar level gauge according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another circular-arc radar level gauge according to an embodiment of the present invention.
Wherein the reference numerals of figures 1-2 are as follows:
10-arc type radar level gauge; 11-level gauge housing; 111-a first end; 112-a second end; 12-a connector; 121-external threads; 122-a fixed slot; 13-cambered surface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the claims and the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
An object of the utility model is to provide an arc type radar level meter, arc type radar level meter is used for installing on the storage tank, through the level to the material transmission pulse signal of storage in the storage tank in order to measure the material.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an arc radar level gauge provided in the present embodiment, which discloses an arc radar level gauge 10, including: a level gauge housing 11, a transceiver (not shown), processing circuitry (not shown) and a probe (not shown); the level gauge housing 11 comprises a first end 111 and a second end 112 set up oppositely; the transceiver is arranged in the level gauge housing 11, and is used for transmitting radar transmission signals to the target object and receiving radar return signals reflected by the target object; the processing circuitry is connected to the transceiver and configured to determine the level based on a relationship between the radar transmit signal and the radar return signal. The probe is arranged within the level gauge housing 11 and extends from the first end 111 to the second end 112, the probe being configured to direct the radar transmission signal towards the target object and to direct the reflected radar return signal back to the transceiver. Wherein, the end surface of the second end 112 is an arc surface 13.
When the circular arc type radar level gauge 10 is mounted on the tank, the level gauge housing 11 is arranged vertically such that the probe is arranged vertically and the second end 112 extends to the inside of the tank. I.e. the arc-shaped radar level gauge 10 is in use, the arc surface 13 is directed towards the target.
Preferably, the processing circuitry is further configured to periodically repeat the determination of the magnitude of the surface waves in the tank and the adaptation of the filtering.
The processing circuitry is further configured to issue an alarm signal when the determined magnitude of the surface waves in the tank exceeds a defined threshold.
The processing circuitry is preferably adapted to determine the local and momentary filling levels at a frequency of at least 0.5Hz, and most preferably at a frequency of at least 1 Hz.
The end face, close to the target, of the second end 112 of the level gauge housing 11 is set to be the arc face 13, and the arc face 13 is not prone to gather condensate or dust of an object, so that the condensate or dust of the object cannot be attached to the end face, close to the end face of the target, of the second end 112, and therefore when the probe guides the radar transmitting signal towards the target and guides the reflected radar return signal back to the transceiver, the condensate or dust of the object does not adhere to the end face, close to the target, of the second end 112, and therefore sending and receiving of the signal cannot be affected, and accuracy of measurement is improved.
The level meter housing 11 is a hollow cylinder structure, and since the mounting hole for mounting the radar level meter on the tank and the mounting positions for mounting the radar level meter are generally round holes, the level meter housing 11 is a hollow cylinder structure, which is suitable for more mounting occasions. The first end 111 and the second end 112 of the hollow cylindrical structure have a diameter larger than the diameter of the middle portion of the level gauge housing 11, where the first end 111 and the second end 112 are connected, and the hollow cylindrical structure may be integrally formed, which may improve the sealing and strength of the level gauge housing 11.
The circular arc type radar level gauge 10 further comprises a connection member 12, said connection member 12 being adapted to be connected to the tank, said connection member 12 being located between said first end 111 and said second end 112, such that it is ensured that said second end 112 extends into the tank when the circular arc type radar level gauge 10 is mounted, thereby ensuring that said probe can be arranged to extend vertically into the tank and enabling said probe to direct said radar transmission signal towards said target to direct said reflected radar return signal back to said transceiver. The connecting member 12 is detachably connected to the level gauge housing 11, which facilitates replacement of the circular arc type radar level gauge 10 in the tank, such that the circular arc type radar level gauge 10 or the tank may be reused without breakage, even if the circular arc type radar level gauge 10 or the tank is broken. Preferably, a sealing member (not shown) is provided between the connecting member 12 and the storage tank, so that the connection between the connecting member 12 and the storage tank can be sealed to seal the storage tank and prevent the leakage of the contents of the storage tank.
Preferably, the storage tank is provided with a mounting hole, and an internal thread is arranged in the mounting hole; an external thread 121 is arranged on the connecting piece 12, and the external thread 121 is connected with the internal thread. The connecting member 12 is embodied as a cylinder fixed in the circumferential direction of the level gauge housing 11 and having an external thread 121 between the first end 111 and the second end 112. When the circular arc radar level gauge 10 is installed, the second end 112 extends into the storage tank, and the external thread 121 is matched with an internal thread in a mounting hole in the storage tank, so that the circular arc radar level gauge 10 is installed in the storage tank. Further, a sealing element is arranged at the root of the external thread 121 (i.e., the external thread 121 close to the first end 111) to seal the storage tank and prevent leakage of objects in the storage tank, wherein the sealing element may be a sealing ring or a sealant, or a circle of boss is turned on the external thread on the cylinder. In other embodiments, external threads 121 may be provided as the connection between the first end 111 and the second end 112.
In other embodiments, referring to fig. 2, the connecting member 12 is provided with a fixing groove 122, the fixing groove 122 is an annular groove formed along the circumference of the level gauge housing 11, and the fixing groove 122 is used for being clamped with the storage tank. When the arc radar level gauge 10 is installed, the edge of the installation hole in the storage tank is clamped in the annular groove, and further, in order to enable the arc radar level gauge 10 to be installed firmly, the annular groove is in interference fit with the edge of the installation hole in the storage tank. When the width of the annular groove is larger than the thickness of the edge of the mounting hole in the storage tank, an elastic piece can be arranged on the inner wall of the annular groove, and when the edge of the mounting hole in the storage tank is clamped into the annular groove, the elastic piece has elastic potential energy, so that the annular groove is in interference fit with the edge of the mounting hole in the storage tank. Preferably, the annular groove has deformability, and when the width of the annular groove is smaller than or equal to the thickness of the edge of the mounting hole in the storage tank and the edge of the mounting hole in the storage tank is clamped in the annular groove, the annular groove has potential energy towards the edge of the mounting hole in the storage tank, so that the annular groove is in interference fit with the edge of the mounting hole on the storage tank.
The material of the second end 112 is one of PTFE, PP, PE, F46 and a meta-fluoro material so that the second end 112 neither shields the signal (i.e., any signal generated during the probe directing the radar transmit signal toward the target and the reflected radar return signal back to the transceiver) nor is it corroded by the filling object within the tank. The first end 111 may also be made of one of PTFE, PP, PE, F46, and a meta-fluoro material. The material of the first end 111 and the material of the second end 112 may be the same or different, and when the first end 111 and the second end 112 are made of the same material, the first end 111 and the second end 112 may be integrally formed, which may improve the strength of the level gauge housing 11. In other embodiments, the first end 111 may be made of stainless steel.
In summary, with the arc radar level gauge 10 provided by the present invention, the end surface of the second end 112 of the level gauge housing 11 close to the target is set as the arc surface 13, since the arc surface 13 is not easy to collect the condensate or dust of the object, it is prevented that the end surface of the second end 112 close to the target is not adhered by the condensate or dust of the object, so that the probe guides the radar transmitting signal towards the target and guides the reflected radar return signal back to the transceiver, and the end surface of the second end 112 close to the target is not adhered by the condensate or dust of the object, so that the transmission and reception of the signal is not affected, and the accuracy of the measurement is improved. The technical problem provided by the utility model is solved.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (10)
1. An arc type radar level gauge for measuring a level of a target object in a tank, comprising:
a level gauge housing including first and second oppositely disposed ends;
a transceiver disposed within the level gauge housing, the transceiver for transmitting a radar transmit signal to the target and for receiving a radar return signal reflected by the target;
processing circuitry connected to the transceiver and configured to determine a level based on a relationship between the radar transmit signal and the radar return signal; and the number of the first and second groups,
a probe disposed within the level gauge housing and extending from the first end to the second end, the probe configured to direct the radar transmit signal toward the target object and to direct the radar return signal back to the transceiver;
wherein, the terminal surface of second end is the cambered surface.
2. The circular arc radar level gauge according to claim 1, wherein said level gauge housing is a hollow cylindrical structure, said first and second ends of said hollow cylindrical structure having a diameter larger than the diameter of the middle portion of said level gauge housing.
3. The circular arc radar level gauge according to claim 1 or 2, further comprising a connection member for connection to said tank, said connection member being located between said first end and said second end.
4. The circular arc radar level gauge according to claim 3, wherein said connecting member is removably connected to said level gauge housing.
5. The circular arc radar level gauge according to claim 3, wherein a seal is provided between said connection member and said tank.
6. The circular arc radar level gauge according to claim 3, wherein said tank is provided with a mounting hole, said mounting hole being internally threaded; and the connecting piece is provided with an external thread, and the external thread is connected with the internal thread.
7. The circular arc radar level gauge according to claim 3, wherein said connecting member has a fixing groove, said fixing groove is an annular groove formed along the circumference of said level gauge housing, and said fixing groove is adapted to engage with said storage tank.
8. The circular arc radar level gauge according to claim 7, wherein a mounting hole is formed in said tank, said fixing groove is engaged with an edge of said mounting hole, and said fixing groove is in interference fit with said edge of said mounting hole.
9. The circular arc radar level gauge according to claim 1, wherein the material of said second end is one of PTFE, PP, PE, F46 and a meta-fluoro material.
10. The circular arc radar level gauge according to claim 1 or 9, wherein the material of said first end is one of PTFE, PP, PE, F46, a meta-fluoro material or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254713.1U CN211527545U (en) | 2019-12-16 | 2019-12-16 | Arc radar level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254713.1U CN211527545U (en) | 2019-12-16 | 2019-12-16 | Arc radar level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211527545U true CN211527545U (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922254713.1U Active CN211527545U (en) | 2019-12-16 | 2019-12-16 | Arc radar level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211527545U (en) |
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2019
- 2019-12-16 CN CN201922254713.1U patent/CN211527545U/en active Active
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