CN218566622U - Small-size radar level gauge - Google Patents
Small-size radar level gauge Download PDFInfo
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- CN218566622U CN218566622U CN202222561835.7U CN202222561835U CN218566622U CN 218566622 U CN218566622 U CN 218566622U CN 202222561835 U CN202222561835 U CN 202222561835U CN 218566622 U CN218566622 U CN 218566622U
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- level gauge
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Abstract
The utility model discloses a small-size radar liquid level meter, wherein a multi-step pit is arranged on a shell, two through holes communicated with the pit are arranged on the side surface of the shell, one through hole is provided with a vent valve, and one through hole is provided with an aerial plug; a radar antenna is arranged on the radar PCB and is positioned in the central part of the radar PCB; the radar PCB is fixedly arranged on the bottom surface of the pit; the edge of the radar fairing is provided with a sealing ring, and the radar fairing is placed on a second step of the multi-step pit; the pressing ring is fastened on a first step of the multi-step pit through screws, and the edge of the radar fairing and the sealing ring are pressed on a second step of the multi-step pit together; the aerial plug is electrically connected with the radar PBC board; the back of the shell is embedded with a universal level gauge. The utility model discloses waterproof design, the size is little, is provided with universal spirit level, does not have waterproof requirement to the installation site, can be accurate vertical facing to ground.
Description
Technical Field
The utility model belongs to the technical field of radar level gauge technique and specifically relates to a small-size radar level gauge is related to.
Background
In the low-lying road or tunnel in the city to and some people's air defense facilities, such as underground parking area, underground market etc. will produce ponding or intake in rainy day, although these places all design and have drainage facility, when the rainfall is great, the displacement can be less than the water yield that flows in to lead to the drainage not to be late, influence the road of these places and pass, in serious time, still can submerge these places. The super heavy rainstorm of Zheng Zhou in 7 and 20 months in 2021 can submerge Jingguan road underground tunnel, local tunnel of No. 4 subway line and a large number of underground parking lots in Zheng Zhou city in a very short time, and especially submerge the Jingguan road underground tunnel and the local tunnel of No. 4 subway line, thereby generating great influence.
Although water level gauges are arranged under overpasses or at tunnel inlets with low terrain, people cannot monitor the positions in real time by related management parties, the accumulated water amount generated by rain in extreme weather is unpredictable, and in order to avoid flooding accidents caused by accumulated water generated at the positions, a radar liquid level meter which is waterproof and easy to install is urgently needed to monitor the accumulated water level at the low-lying positions of the terrain.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art not enough, provide a small-size radar level gauge, waterproof design, the size is little, is provided with universal spirit level, does not have waterproof requirement to the place of installation, can be accurate vertical facing to ground.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a small-size radar liquid level meter comprises a shell, a radar PCB (printed circuit board), a radar fairing, a sealing ring, a pressure ring, a vent valve, an aerial plug and a universal level gauge;
the front surface and the opposite back surface of the shell are mutually parallel, a multi-step pit is arranged on the shell, a pit opening of the multi-step pit is positioned on the front surface, the multi-step pit comprises a first step and a second step, the first step is close to the front surface, the multi-step surface and the bottom surface of the multi-step pit are parallel to the front surface, two through holes communicated with the pit are arranged on the side surface of the shell, one of the through holes is provided with a breather valve, and the other through hole is provided with an aerial plug;
a radar antenna is arranged on the radar PCB and is positioned in the central part of the radar PCB;
the radar PCB is fixedly arranged on the bottom surface of the pit, and the radar antenna faces the front surface;
the edge of the radar fairing is provided with a sealing ring, and the radar fairing is placed on a second step of the multi-step pit;
the compression ring is fastened on a first step of the multi-step pit through screws, and the edge of the radar fairing and the sealing ring are pressed on a second step of the multi-step pit together;
the aerial plug is electrically connected with the radar PBC board;
the back of the shell is embedded with a universal level gauge.
Further, the housing is made of an aluminum alloy.
Further, the parallelism tolerance of the bottom and the back of the multi-step pit in the shell is less than 0.01mm.
Furthermore, the side symmetry of casing is provided with the screw thread blind hole, is used for the utility model discloses a level gauge's installation is fixed.
Further, the radar PCB board is a millimeter wave radar PCB board.
Furthermore, the vent valve is a waterproof one-way vent valve.
Furthermore, the aviation plug is a fixed end sealing aviation plug.
Furthermore, the universal level meter is a bubble type universal level meter.
Further, the radome is not higher than the front surface of the housing.
Further, the radome is made of engineering plastics.
The utility model discloses a small-size radar level gauge, during the use for the connecting piece passes through the screw and twists in the screw blind hole of casing side, then fixes the connecting piece in the eminence that needs measure the liquid level position again, with the front orientation of casing, the back up, according to the levelness of the universal spirit level adjustment casing at the back, lets the utility model discloses a below the front of level gauge is facing, when locating the ponding promptly here, the surface of water of ponding with the utility model discloses a millimeter wave radar signal of level gauge is perpendicular, the degree of depth of measurement ponding that can be accurate.
The beneficial effects of the utility model are that:
1. the utility model relates to a small-size radar level gauge, radar PCB board are sealed in the casing, are convenient for not only install, do not have waterproof requirement to the mounted position moreover, and the mounted position can set up at will.
2. The utility model relates to a small-size radar level gauge, radar PCB board transmission millimeter wave can let the radar antenna subassembly very little, can integrate on the circuit board, lets the very little of circuit board size, lets the utility model discloses a small-size radar level gauge overall dimension is less.
2. The utility model relates to a small-size radar level gauge, radar PCB board transmission millimeter wave have measuring distance far away, if choose for use 77GHz millimeter wave, the frequency channel is at 77-81GHz, and the farthest measuring distance can reach 250 meters, and measurement accuracy is high, and its high accuracy measuring distance exceeds 100 meters, and measurement accuracy is less than 1 centimetre.
3. The utility model relates to a small-size radar level gauge, the front and the back parallel arrangement of casing, and the bottom of pit is less than 0.01mm with the depth of parallelism at the back, and not only radar PCB board is installed easily, and the later stage is installed moreover the utility model discloses a level timing only needs the universal spirit level of reference casing back, can will the utility model discloses a direction of level gauge radar wave is vertical, can accurately measure the height of the surface of water below this level gauge.
4. The utility model relates to a small-size radar level gauge is provided with the breather valve, can be balanced the utility model discloses a radar fairing that avoids plastics to make leads to warping because of inside and outside atmospheric pressure is uneven in level gauge indent and external atmospheric pressure to it is inaccurate to lead to the measuring data.
Drawings
Fig. 1 is a front schematic view of the present invention.
Fig. 2 is a schematic back view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
In the figure: 10. a housing; 11. a through hole; 20. a radar PCB board; 21. a radar antenna; 30. a radome; 40. a seal ring; 50. pressing a ring; 60. a vent valve; 70. aviation plug, 80 and screws; 90. a universal level gauge.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, 2 and 3, a small-sized radar liquid level gauge comprises a housing 10, a radar PCB board 20, a radar dome 30, a sealing ring 40, a pressure ring 50, a vent valve 60, an aviation plug 70 and a universal level gauge 90;
the shell 10 is made of aluminum alloy, the appearance of the shell is a cube, the size of the shell is 60mm multiplied by 40mm, the front face and the opposite back face of the shell are mutually parallel, a circular multi-step pit 12 is machined on the shell by a numerical control machining center, the pit opening of the multi-step pit 12 is positioned on the front face, the multi-step pit 12 is a pit comprising a first step and a second step, the diameters of the multi-step pit 12 are 38mm,43mm and 50mm from inside to outside in sequence, the depth of the first step is 3mm, the depth of the second step is 5mm, the total depth of the multi-step pit 12 is 30mm, the first step is close to the front face, the multi-step face and the bottom face of the multi-step pit 12 are parallel to the front face, the parallelism tolerance is less than 0.01mm, two through holes 11 communicated with the multi-step pit 12 are arranged on one side face of the shell 10, the diameters of the two through holes 11 are both 10mm, a waterproof one through hole 60 is arranged on one through hole 11, and a sealed aviation plug 70 is arranged on the other through hole 11;
the radar PCB 20 is rectangular, a radar antenna 21 is arranged on the radar PCB, and the radar antenna 21 is positioned in the center of the radar PCB 20;
the four corners of the radar PCB 20 are fixed on the bottom surface of the multi-step pit 12 through 4M 2 screws, and the radar antenna 21 faces the front surface;
the edge of the radar fairing 30 is provided with a rectangular sealing ring 40 made of silicon rubber, the outer diameter of the rectangular sealing ring is 43mm, the inner diameter of the rectangular sealing ring is 40mm, the thickness of the rectangular sealing ring is 2mm, and the radar fairing 30 is placed on the second step of the multi-step pit 12;
the radome 30 is a millimeter wave lens, the radome 30 is made of modified PPS plastic, and coloring agents are added into the PPS plastic, so that the appearance of the radome is more beautiful. The main shape of the radar antenna is a convex lens shape, millimeter waves emitted by the radar antenna can be gathered, long-distance measurement is realized at low power, and the edge of the radar antenna is provided with an annular step notch for placing a sealing ring 40;
the pressing ring 50 is made of the same aluminum alloy as the shell 10, the size of the pressing ring is 50mm in outer diameter, 40mm in inner diameter and 3mm in thickness, 8 countersunk screw holes are formed in the pressing ring in a circumferentially and uniformly distributed mode, the pressing ring 50 is fastened on a first step of the multi-step pit 12 through 8M 2 screws 80, and the edge of the radar fairing 30 and the sealing ring 40 are pressed on a second step of the multi-step pit 12 together; and the radome 30 is not higher than the front surface of the case 10.
The aviation plug 70 is electrically connected with the radar PBC board 20 through a lead; the back of the housing 10 is embedded with a bubble universal level 90 at one corner, and the bubble universal level 90 is lower than the back surface.
In this embodiment, the housing 10 and the pressure ring 50 are made of aluminum alloy, and are formed by machining with a CNC machining center, and the surfaces of the housing are passivated after machining.
The second embodiment:
this embodiment differs from the embodiment in that the outer shape of the housing 10 is cylindrical, for example, a cylinder with outer dimensions of 60mm in diameter and 40mm in height.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A small-size radar level gauge, characterized in that: the radar level gauge comprises a shell (10), a radar PCB (printed circuit board) (20), a radar fairing (30), a sealing ring (40), a pressure ring (50), a ventilation valve (60), an aviation plug (70) and a universal level gauge (90);
the front surface and the opposite back surface of the shell (10) are parallel to each other, a multi-step pit (12) is arranged on the shell, the pit opening of the multi-step pit (12) is positioned on the front surface, the multi-step pit (12) comprises a first step and a second step, the first step is close to the front surface, the multi-step surface and the bottom surface of the multi-step pit are both parallel to the front surface, two through holes (11) communicated with the multi-step pit (12) are arranged on the side surface of the shell (10), a breather valve (60) is arranged on one through hole (11), and an aerial plug (70) is arranged on the other through hole;
a radar antenna (21) is arranged on the radar PCB (20), and the radar antenna (21) is positioned in the central part of the radar PCB (20);
the radar PCB (20) is fixedly arranged on the bottom surface of the multi-step pit (12), and the radar antenna (21) faces the front surface;
the edge of the radome (30) is provided with a sealing ring (40), and the radome (30) is placed on the second step of the multi-step pit (12);
the pressing ring (50) is fastened on a first step of the multi-step pit (12) through a screw (80), and the edge of the radar fairing (30) and the sealing ring (40) are pressed tightly on a second step of the multi-step pit (12);
the aerial plug (70) is electrically connected with the radar PCB (20);
the back of the shell (10) is embedded with a universal level meter (90).
2. A small-sized radar level gauge according to claim 1, wherein: the housing (10) is made of an aluminum alloy.
3. A small-sized radar level gauge according to claim 1, wherein: the parallelism tolerance of the bottom and the back of the multi-step pit (12) in the shell (10) is less than 0.01mm.
4. A small-sized radar level gauge according to claim 1, wherein: the side surface of the shell (10) is symmetrically provided with threaded blind holes.
5. A small-sized radar level gauge according to claim 1, wherein: the radar PCB (20) is a millimeter wave radar PCB.
6. A small-sized radar level gauge according to claim 1, wherein: the vent valve (60) is a waterproof one-way vent valve.
7. A small-sized radar level gauge according to claim 1, wherein: the aviation plug (70) is a fixed end sealing aviation plug.
8. A small-sized radar level gauge according to claim 1, wherein: the universal level meter (90) is a bubble type universal level meter.
9. A small-sized radar level gauge according to claim 1, wherein: the radome (30) is not higher than the front surface of the housing.
10. A small-sized radar level gauge according to claim 1, wherein: the radar fairing (30) is made of engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222561835.7U CN218566622U (en) | 2022-09-27 | 2022-09-27 | Small-size radar level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222561835.7U CN218566622U (en) | 2022-09-27 | 2022-09-27 | Small-size radar level gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218566622U true CN218566622U (en) | 2023-03-03 |
Family
ID=85314181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222561835.7U Active CN218566622U (en) | 2022-09-27 | 2022-09-27 | Small-size radar level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218566622U (en) |
-
2022
- 2022-09-27 CN CN202222561835.7U patent/CN218566622U/en active Active
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