Buried water level gauge

Abstract

The utility model discloses a buried water level gauge, which solves the problem of low measurement accuracy of the buried water level gauge in the prior art, and has the beneficial effects of ensuring the measurement accuracy and improving the sealing performance, and the specific scheme is as follows: the buried water level gauge comprises a shell, a first cover plate and a second cover plate, and the top side and the interior of the shell are hollow; a step face is arranged in the top side of the shell, at least two layers of sealing grooves are formed in the step face, the first cover plate is clamped into the top side of the shell, sealing pieces are arranged in the sealing grooves, a first protruding part is arranged on the side, facing the shell, of the first cover plate, an ultrasonic probe is arranged in the first protruding part to obtain water level information, and a groove is formed in the top side of the first cover plate. One end of the ultrasonic probe is arranged in the groove, the other end of the ultrasonic probe is connected with the collection controller, an annular second cover plate is arranged above the first cover plate, and the fastener penetrates through the second cover plate and the first cover plate to be connected with the shell.

Description

Technical Field

[0001] The utility model relates to the field of water level gauges, in particular to an underground water level gauge. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The underground water level meter can be used to monitor waterlogging on urban roads. Specifically, it uses two metal probes extending from the shell to sense whether there is water accumulation. This principle is realized by using the conductivity of water. When there is water, the two metal probes will use the conductivity of water to energize; when there is no water, the two metal probes cannot be energized by the conductivity of water. Since the two metal probes are exposed outside the shell, there are many safety hazards and technical shortcomings, as follows:

[0004] First, there is too much dust or debris outdoors, which is easy to accumulate. At this time, even if there is accumulated water, the resistance between the two metal probes will be infinite due to the debris, which will further lead to the inability to detect water. The metal probe will mistakenly pass through without detecting water, and will not turn on the ultrasonic module to measure the water level, resulting in poor measurement accuracy. There may also be conductive materials on the road, causing the two probes to short-circuit directly. At this time, the device will turn on the ultrasonic module to measure the water level, resulting in high power consumption and false reporting.

[0005] Second: The sealing between the cover plate and the shell of the buried water level gauge is poor, and water is easy to enter when the water pressure is high, affecting the overall service life. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an underground water level gauge, which does not require the metal probe to be exposed to the outside, thereby ensuring the measurement accuracy and effectively ensuring the sealing performance of the underground water level gauge.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A buried water level meter comprises a shell, a first cover plate and a second cover plate. The top side and the interior of the shell are hollow, a step surface is arranged inside the top side of the shell, at least two layers of sealing grooves are arranged at the step surface, the first cover plate is inserted into the top side of the shell, a sealing member is arranged in the sealing groove, a first convex portion is arranged on the side of the first cover plate facing the shell, an ultrasonic probe is arranged in the first convex portion to obtain water level information, the ultrasonic wave emitted by the ultrasonic probe can penetrate the first cover plate, a groove is arranged inside the top side of the first cover plate, one end of the ultrasonic probe is arranged in the groove, the other end of the ultrasonic probe is connected to a collection controller, an annular second cover plate is arranged above the first cover plate, and a fastener passes through the second cover plate and the first cover plate to connect to the shell.

[0009] In the above-mentioned underground water level meter, the groove is a T-shaped groove, and at least one end of the groove is open so that one end of the ultrasonic probe enters the groove;

[0010] The first cover plate is an ABS cover plate.

[0011] In the above-mentioned buried water level meter, the first convex part is located in the housing with one end open, the acquisition controller is located at the open end of the first convex part, the length of the first convex part is less than the length of the ultrasonic probe, and after one end of the ultrasonic probe is placed in the groove of the first cover plate, the acquisition controller is connected to the other end of the ultrasonic probe;

[0012] The acquisition controller is connected to the bottom side of the first convex portion, and finally the acquisition controller is connected to the bottom side of the first convex portion.

[0013] In the above-mentioned buried water level gauge, in order to insert the first protrusion into the shell, the outer diameter of the first protrusion is smaller than or equal to the inner diameter of the shell.

[0014] In the above-mentioned buried water level meter, two ultrasonic probes are provided, the two ultrasonic probes are spaced apart from each other, and the measuring ranges of the two ultrasonic probes are different to ensure the accuracy and precision of the measurement.

[0015] In an underground water level gauge as described above, the outer diameter of the second cover plate is larger than the outer diameter of the top side of the shell, and a groove cooperating with the shell is provided on the lower surface of the second cover plate facing the shell. The groove is annular to cooperate with the top side of the shell, thereby improving the safety performance and preventing sand and gravel from entering the interior of the shell.

[0016] In the above-mentioned buried water level gauge, the upper surface of the second cover plate away from the first cover plate is provided with an inclined surface section, the inclined surface section is located on the peripheral side of the second cover plate, and the width of the inclined surface section is smaller than the width of the first cover plate.

[0017] In the above-mentioned buried water level gauge, a second convex portion is arranged on a side of the first cover plate away from the first convex portion, and a first opening is arranged on the second cover plate, and the first opening is arranged through the second convex portion.

[0018] In the above-mentioned buried water level meter, the fastener is a plum blossom screw, which increases the safety of use.

[0019] In the buried water level gauge as described above, the shell is cylindrical and the bottom of the shell is hemispherical, thus preventing the generation of bubbles between the shell and cement.

[0020] The beneficial effects of the above utility model are as follows:

[0021] 1) The utility model inserts the first convex part of the first cover plate into the shell, and the step surface limits the first cover plate. The first cover plate effectively protects the ultrasonic probe, and the second cover plate not only has a protective function, but also has a function of pressing the shell; the ultrasonic probe can penetrate the first cover plate to detect the water level above the water level gauge, and after detection, it is sent to the acquisition controller to realize the acquisition of water level information, without exposing the metal probe to the outside, effectively ensuring the measurement accuracy, reducing the probability of false reporting, avoiding the short circuit of the two metal probes, and effectively controlling the power consumption.

[0022] 2) In the utility model, the first cover plate and the shell are sealed by multiple seals to improve the sealing performance of the entire structure. A groove is set on the side where the second cover plate cooperates with the shell, and the top of the shell can be inserted into the groove to achieve the cooperation between the second cover plate and the top side of the shell, so that the safety performance is improved and sand and gravel are prevented from entering the interior of the shell.

[0023] 3) In the utility model, a slope section is arranged around the upper surface of the second cover plate to provide effective buffering when a vehicle rolls over it, thereby avoiding the displacement of the water level gauge caused by long-term impact on the buried water level gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is an exploded schematic diagram of an underground water level meter according to one or more embodiments of the utility model.

[0026] Figure 2 It is an exploded cross-sectional view of an underground water level gauge according to one or more embodiments of the utility model.

[0027] Figure 3 It is a schematic diagram of one end surface of a second cover plate in an underground water level gauge according to one or more embodiments of the utility model.

[0028] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0029] Wherein: 1. fastener, 2. inclined surface section, 3. first through hole, 4. second cover plate, 5. second through hole, 6. first cover plate, 7. acquisition controller, 8. ultrasonic probe, 9. sealing groove, 10. shell, 11. third section, 12. annular ring, 13. first protrusion, 14. second protrusion, 15. blind hole, 16. notch, 17. first section, 18. groove. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0032] As introduced in the background technology, there are problems in the prior art. In order to solve the above technical problems, the utility model proposes an underground water level meter.

[0033] Embodiment 1

[0034] In a typical implementation of the present invention, reference is made to Figure 1 , Figure 2 As shown, an underground water level meter includes a shell 10, a first cover plate 6 and a second cover plate 4. The top side and the interior of the shell 10 are hollow. A step surface is arranged inside the top side of the shell 10. At least two layers of sealing grooves are arranged at the step surface. Two layers of sealing grooves can be arranged. The first cover plate is inserted into the top side of the shell. A sealing member is arranged in the sealing groove 9. The sealing member can be an O-ring to ensure the sealing performance between the first cover plate and the shell 10. A first convex portion 13 is arranged on the side of the first cover plate facing the shell. An ultrasonic probe 8 is arranged in the first convex portion 13 to obtain water level information. The ultrasonic wave emitted by the ultrasonic probe can penetrate the first cover plate. A groove is arranged inside the top side of the first cover plate 6. One end of the ultrasonic probe 8 is arranged at the groove. The other end of the ultrasonic probe 8 is connected to the acquisition controller 7. An annular second cover plate is arranged above the first cover plate. The fastener 1 passes through the second cover plate and the first cover plate to be connected to the shell.

[0035] It should be noted that the groove 18 is a T-shaped groove, and at least one end of the groove is open so that one end of the ultrasonic probe can enter the groove.

[0036] A second protrusion 14 is provided on one side of the first cover plate 6 away from the first protrusion 13. The cross-sectional shapes of the first protrusion and the second protrusion are both circular. A first opening is provided at the center of the second cover plate 4. The inner diameter of the first opening matches the diameter of the second protrusion. The first opening passes through the second protrusion.

[0037] It should be explained that the first cover plate is an ABS cover plate (acrylonitrile / butadiene / styrene copolymer plate), and the ultrasonic wave generated by the ultrasonic probe can penetrate the first cover plate, so that the first cover plate protects the ultrasonic probe.

[0038] In this embodiment, the first convex portion 13 is located at one end of the shell body and is open, and the acquisition controller 7 is located at the open end at the bottom of the first convex portion. The length of the first convex portion 13 is less than the length of the ultrasonic probe, and the groove for accommodating the ultrasonic probe extends deep into the second convex portion, so that the thickness of the second convex portion located at the top side of the ultrasonic probe is relatively thin, and silicone sealant is applied on the inner wall of the groove, and one end (signal transmitting end) of the ultrasonic probe 8 is placed in the groove of the first cover plate, and the silicone sealant bonds one end of the ultrasonic probe to the first cover plate, and the acquisition controller is connected to the other end of the ultrasonic probe;

[0039] Specifically, the acquisition controller 7 includes a PCB circuit board, which is connected to the bottom side of the first convex portion. The PCB circuit board integrates a micro-control unit MCU and a power supply circuit. The power supply circuit is used to power the micro-control unit MCU and the ultrasonic probe. The micro-control unit MCU can control the ultrasonic probe to collect data within a set time without the need to perform detection all the time. The micro-control unit MCU adopts the Creative Micro MS23SF1 module with an internal integrated M4 core + LORAWAN network. The ultrasonic detector sends the detected data to the micro-control unit MCU, and the micro-control unit MCU sends the collected data to the LORAWAN concentrator through the LORAWAN network (a type of wireless communication network). The LORAWAN concentrator saves the received water level data to an internal memory. The LORAWAN concentrator is connected to a host computer or a terminal device through wireless communication, and the data stored in the internal memory of the LORAWAN concentrator is provided for query by the host computer or the terminal device.

[0040] Regarding the shell, the shell includes an annular ring 12, a step surface, a first section 17, a second section and a third section 11 connected in sequence. The annular ring, the step surface and the first section 17 can be arranged as an integral whole. The inner diameter of the annular ring is adapted to the outer diameter of the first cover plate, the length of the first section is smaller than the length of the second section, the inner diameter of the first section is adapted to the outer diameter of the first protrusion, the length of the first protrusion is greater than the length of the first section, and in order to insert the first protrusion into the shell, the outer diameter of the first protrusion is less than or equal to the inner diameter of the shell.

[0041] Among them, the second section is cylindrical and is used to place batteries. The batteries are connected to the acquisition controller. When the batteries need to be replaced, the fasteners are removed, the first cover plate and the second cover plate are taken out, and the batteries are replaced. The bottom of the shell, i.e., the third section 11, is hemispherical, and the center of the hemispherical bottom is flat. The setting of the third section effectively prevents the generation of bubbles between the shell and the cement, thereby ensuring the stability of the water level meter setting.

[0042] It should be noted that two ultrasonic probes are provided, and the two ultrasonic probes are set at a distance from each other. The measurement ranges of the two ultrasonic probes are different, one is a high range and the other is a low range, so as to ensure the accuracy and precision of the measurement.

[0043] The outer diameter of the second cover plate 4 is larger than the outer diameter of the annular ring on the top side of the shell, and the second cover plate is provided with a notch 16 matching the shell on the lower surface facing the shell. Figure 3 As shown, the notch is annular to cooperate with the top side of the shell, so that the safety performance is improved and sand and gravel are prevented from entering the interior of the shell.

[0044] It is easy to understand that the second cover plate 4 is provided with a slope section 2 on the upper surface away from the first cover plate, the slope section 2 is located on the peripheral side of the second cover plate, the width of the slope section 2 is smaller than the width of the first cover plate 6, and the slope section is located on the outside of the first fastener. The setting of the slope section 2 makes the center of the second cover plate higher than the peripheral side of the second cover plate, providing a buffer when the vehicle runs over it, thereby avoiding displacement of the water level gauge under long-term action.

[0045] In this embodiment, the fastener 1 is a plum blossom-shaped bolt, and a plurality of fasteners are provided. The plum blossom-shaped bolt is not easy to be unscrewed, which increases the safety of use. The fastener is specifically provided through the first through hole 3 of the second cover plate, the second through hole 5 of the first cover plate, and the blind hole 15 provided on the step surface of the shell.

[0046] The first convex part of the first cover plate is inserted into the shell, and the first cover plate is limited by the step surface. The first cover plate effectively protects the ultrasonic probe. The first cover plate is in sealing contact with the shell. The second cover plate not only has a protective function, but also has the function of pressing the shell. The ultrasonic probe is used to detect the water level above the water level gauge, and after detection, it is sent to the acquisition controller, and the acquisition controller sends the collected data to the outside world.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An underground water level gauge, characterized in that: It includes a shell, a first cover plate and a second cover plate. The top side and the interior of the shell are hollow. A step surface is arranged inside the top side of the shell. At least two layers of sealing grooves are arranged on the step surface. The first cover plate is inserted into the top side of the shell. A sealing member is arranged in the sealing groove. A first convex portion is arranged on the side of the first cover plate facing the shell. An ultrasonic probe is arranged in the first convex portion to obtain water level information. The ultrasonic wave emitted by the ultrasonic probe can penetrate the first cover plate. A groove is arranged inside the top side of the first cover plate. One end of the ultrasonic probe is arranged in the groove. The other end of the ultrasonic probe is connected to the acquisition controller. An annular second cover plate is arranged above the first cover plate. A fastener passes through the second cover plate and the first cover plate to connect to the shell.

2. The underground water level gauge according to claim 1, characterized in that: The groove is a T-shaped groove, and at least one end of the groove is open so that one end of the ultrasonic probe enters the groove; The first cover plate is an ABS cover plate.

3. The underground water level gauge according to claim 1, characterized in that: One end of the first convex portion located in the housing is open, and the acquisition controller is located at the open end of the first convex portion; The acquisition controller is connected to the bottom side of the first convex portion.

4. The underground water level gauge according to claim 1, characterized in that: The outer diameter of the first protrusion is smaller than or equal to the inner diameter of the shell.

5. The underground water level gauge according to claim 1, characterized in that: There are two ultrasonic probes, the two ultrasonic probes are spaced apart from each other, and the measurement ranges of the two ultrasonic probes are different.

6. The underground water level gauge according to claim 1, characterized in that: The outer diameter of the second cover plate is greater than the outer diameter of the top side of the shell, and a notch matching with the shell is arranged on the lower surface of the second cover plate facing the shell.

7. The underground water level gauge according to claim 1, characterized in that: The upper surface of the second cover plate away from the first cover plate is provided with an inclined surface section, the inclined surface section is located on the peripheral side of the second cover plate, and the width of the inclined surface section is smaller than the width of the first cover plate.

8. The underground water level gauge according to claim 1, characterized in that: A second convex portion is disposed on a side of the first cover plate away from the first convex portion, and a first opening is disposed on the second cover plate, and the first opening is disposed through the second convex portion.

9. The underground water level gauge according to claim 1, characterized in that: The fastener is a plum-shaped screw.

10. The underground water level gauge according to claim 1, characterized in that: The shell is cylindrical, and the bottom of the shell is hemispherical.

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