Resistance type water level measuring device

Abstract

The invention discloses a resistance type water level measuring device, and relates to the technical field of water level measuring devices. The resistance type water level measuring device comprises a hollow part, a first magnetic device, a second magnetic device, a buoyancy device and a resistance measuring device. A containing cavity is formed in the hollow part, the first magnetic device is arranged in the containing cavity, a plurality of sliding rails are arranged on the surface of the containing cavity, the sliding rails and the first magnetic device can conduct electricity, and the first magnetic device is connected with the sliding rails. The second magnetic device is arranged on the outer side of the hollow part, can drive the first magnetic device to slide along the sliding rail and is connected with the buoyancy device, and the buoyancy device is used for being suspended on the water surface. The resistance of the slide rail changes due to the change of the water level, the resistance measuring device can measure the resistance of the slide rail, and the water level height can be calculated by combining the principle that the length of the uniform-section conductor material is in direct proportion to the resistance, so that the water level measurement is more stable, and meanwhile, the water level measurement precision is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of water level measuring devices, and in particular to a resistance type water level measuring device. Background Art

[0002] In the prior art, water pressure sensors are usually used to measure groundwater levels. First, the water depth above the water pressure sensor is calculated by the size of the water pressure sensor, and then the depth of the groundwater level is obtained by subtracting the water depth from the location depth of the water pressure sensor. Water pressure sensors usually rely on electrical signals caused by material deformation to determine the size of water pressure. This method requires the water pressure sensor to have high accuracy. During the measurement process, the water pressure sensor is susceptible to vibration, resulting in errors in the measurement results, and the water level measurement accuracy is not high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a resistance type water level measuring device in order to overcome the defects of low stability and low measuring accuracy of water level measuring devices in the prior art.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a resistance type water level measuring device, which comprises a hollow part, a first magnetic device, a second magnetic device, a buoyancy device and a resistance measuring device;

[0006] The hollow part has an accommodating cavity inside, the first magnetic device is arranged in the accommodating cavity, the surface of the accommodating cavity has a plurality of slide rails, the slide rails and the first magnetic device are electrically conductive, and the first magnetic device is respectively connected to the plurality of slide rails;

[0007] The second magnetic device is arranged on the outside of the hollow part, and the second magnetic device can drive the first magnetic device to slide along the slide rail. The second magnetic device is connected to the buoyancy device, and the buoyancy device is used to float on the water surface. The resistance measuring device can measure the resistance of the slide rail.

[0008] In this solution, the interior of the hollow part has a accommodating cavity. A first magnetic device is arranged in the accommodating cavity, and a second magnetic device is arranged on the outside of the hollow part. The second magnetic device is connected to a buoyancy device, and the buoyancy device is suspended to float on the water surface. When the water level changes, the position of the buoyancy device changes with the water level, and the buoyancy device drives the second magnetic device to move, and the second magnetic device then drives the first magnetic device to slide along the slide rail, thereby changing the length of the slide rail forming a loop. The length of the slide rail forming a loop changes the resistance of the slide rail. The resistance measuring device can measure the resistance of the slide rail. By reading the resistance value and combining the principle that the length of the conductor material with equal cross-section is proportional to the resistance, the water level height can be calculated. Compared with the traditional water pressure sensor, the resistance water level measuring device is more stable and also improves the accuracy of water level measurement.

[0009] Preferably, the first magnetic device comprises a first magnet and a first roller, and the first roller is connected to the first magnet;

[0010] The slide rail is a track groove, and the first roller can slide along the track groove.

[0011] In this solution, the first magnetic device includes a first magnet and a first roller, the slide rail is a track groove, and the first roller can slide along the track groove. Through the setting of the first roller, the friction force of the first magnetic device moving in the accommodating cavity is reduced, so that the first magnetic device can slide more easily in the accommodating cavity, the sliding of the first magnetic device is smoother, and the water level measurement is more accurate.

[0012] Preferably, the first roller comprises a first roller body, a first connecting rod, a first rotating shaft and a first spring;

[0013] Two ends of the first connecting rod are rotatably connected to the first roller body and the first rotating shaft respectively, and two ends of the first spring are respectively connected to the first connecting rod and the first magnet.

[0014] In the present solution, by setting the first connecting rod, the first rotating shaft and the first spring, the first roller can move freely and appropriately, the first connecting rod can rotate around the first rotating shaft, and the first spring can play a buffering role, further reducing the friction in the movement of the first roller, avoiding the first roller from getting stuck when sliding, making the rolling of the first roller more sensitive, and further improving the accuracy of water level measurement.

[0015] Preferably, the second magnetic device comprises a second magnet, the second magnet is sleeved on the outer peripheral side of the hollow member, and the polarity of the second magnet is opposite to that of the first magnet.

[0016] In this solution, the second magnetic device includes a second magnet, which is sleeved on the outer peripheral side of the hollow part. Since the polarity of the second magnet is opposite to that of the first magnet, the two attract each other under the action of magnetic force. When the second magnet moves, the second magnet can drive the first magnetic device to slide along the slide rail.

[0017] Preferably, the second magnet is annular.

[0018] In this solution, by setting the second magnet in a ring shape, magnetic force can be generated in the circumferential direction of the hollow part, so that the attraction of the second magnet to the first magnet is more uniform, and the second magnet drives the first magnet to move better, thereby further improving the accuracy of water level measurement.

[0019] Preferably, the buoyancy device comprises a buoyancy member, the interior of the buoyancy member is used to accommodate gas, and the buoyancy member is connected to the second magnetic device.

[0020] In this solution, the buoyancy device includes a buoyancy member, the interior of the buoyancy member is used to contain gas, so that the buoyancy member can float on the water surface, thereby driving the second magnetic device connected to the buoyancy member to move with the change of water level.

[0021] Preferably, the buoyancy device further comprises a second roller, the second roller being connected to the buoyancy member, and the second roller being capable of sliding along the outer surface of the hollow member.

[0022] In this solution, the buoyancy device also includes a second roller, which is connected to the buoyancy member and can slide along the outer surface of the hollow member, so that the buoyancy device can be more stable when moving, and the second magnetic device can move more smoothly, further improving the accuracy of water level measurement.

[0023] Preferably, the second roller comprises a second roller body, a second connecting rod, a second rotating shaft and a second spring;

[0024] Two ends of the second connecting rod are respectively rotatably connected to the second roller body and the second rotating shaft, and two ends of the second spring are respectively connected to a plurality of second connecting rods.

[0025] In this solution, by setting a second connecting rod, a second rotating axis and a second spring, the second roller can move freely and appropriately, the second connecting rod can rotate around the second rotating axis, and the second spring can play a buffering role, further reducing the friction in the movement of the second roller, preventing the second roller from getting stuck when sliding, making the rolling of the second roller more sensitive, and further improving the accuracy of water level measurement.

[0026] Preferably, the resistance measuring device comprises a resistance measuring instrument and a wire, and the wire connects the resistance measuring instrument and the slide rail.

[0027] In this solution, a wire is connected between the resistance measuring instrument and the slide rail, so that a loop is formed between the resistance measuring instrument and the slide rail, so that the resistance measuring instrument can measure the resistance of the slide rail.

[0028] Preferably, both ends of the accommodating cavity are sealed, and the accommodating cavity is used to seal the dry gas.

[0029] In this solution, both ends of the accommodating chamber are sealed, and dry gas is sealed in the accommodating chamber, so that the interior of the accommodating chamber is always insulated, preventing moisture in the external environment from entering the accommodating chamber and affecting the measurement results, thereby further improving the accuracy of water level measurement.

[0030] The positive and progressive effects of the present invention are:

[0031] The present invention provides a resistance type water level measuring device, which includes a hollow part, a first magnetic device, a second magnetic device, a buoyancy device and a resistance measuring device. The hollow part has a containing cavity inside. The first magnetic device is arranged in the containing cavity, and the second magnetic device is arranged outside the hollow part. The second magnetic device is connected to the buoyancy device, and the buoyancy device is suspended to float on the water surface. When the water level changes, the position of the buoyancy device changes with the water level, and the buoyancy device drives the second magnetic device to move, and the second magnetic device then drives the first magnetic device to slide along the slide rail, thereby changing the length of the slide rail forming a loop, and the length of the slide rail forming a loop changes the resistance of the slide rail. The resistance measuring device can measure the resistance of the slide rail, and the water level height can be calculated by reading the resistance value and combining the principle that the length of the conductor material with equal cross-section is proportional to the resistance. Compared with the traditional water pressure sensor, the resistance type water level measuring device is more stable and also improves the accuracy of water level measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the longitudinal cross-sectional structure of a resistance-type water level measuring device according to an embodiment of the present invention.

[0033] Figure 2 for Figure 1 Magnified view of part A.

[0034] Figure 3 for Figure 1 BB cross-section diagram.

[0035] Figure 4 for Figure 1 CC cross-section diagram.

[0036] Figure 5 FIG. 4 is a schematic diagram of a longitudinal cross-sectional structure of a first magnetic device according to an embodiment of the present invention.

[0037] Figure 6Schematic diagram of the transverse cross-sectional structure of a hollow part according to an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] Ground 000

[0040] Underground observation well 010

[0041] Connecting hole 020

[0042] Water surface 030

[0043] Hollow parts 100

[0044] Accommodating chamber 110

[0045] Slide 111

[0046] Conductive portion 112

[0047] The first magnetic device 200

[0048] First magnet 210

[0049] First roller 220

[0050] The first roller body 221

[0051] First connecting rod 222

[0052] First rotation axis 223

[0053] First spring 224

[0054] The second magnetic device 300

[0055] Second magnet 310

[0056] Ring 320

[0057] Buoyancy device 400

[0058] Buoyancy 410

[0059] Second roller 420

[0060] The second roller body 421

[0061] Second connecting rod 422

[0062] Second rotation axis 423

[0063] Second spring 424

[0064] Resistance measuring device 500

[0065] Resistance Meter 510

[0066] Wire 520

[0067] Pulling piece 600 DETAILED DESCRIPTION

[0068] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the following examples.

[0069] like Figure 1-Figure 4 As shown, an underground observation well 010 is opened on the ground 000, and a plurality of connecting holes 020 are arranged on the well pipe of the underground observation well 010, so that the interior of the underground observation well 010 is connected with the external soil, so that the water level in the underground observation well 010 is the same as the groundwater level.

[0070] The present embodiment provides a resistance type water level measuring device, which is arranged inside an underground observation well 010, and comprises a hollow part 100, a first magnetic device 200, a second magnetic device 300, a buoyancy device 400 and a resistance measuring device 500. The hollow part 100 has a receiving chamber 110 inside, the first magnetic device 200 is arranged in the receiving chamber 110, the surface of the receiving chamber 110 has a plurality of slide rails 111, the slide rails 111 and the first magnetic device 200 can conduct electricity, and the first magnetic device 200 is respectively connected to the plurality of slide rails 111. The second magnetic device 300 is arranged outside the hollow part 100, the second magnetic device 300 can drive the first magnetic device 200 to slide along the slide rails 111, the second magnetic device 300 is connected to the buoyancy device 400, the buoyancy device 400 is used to suspend on the water surface 030, and the resistance measuring device 500 can measure the resistance of the slide rails 111.

[0071] When the water level changes, the position of the buoyancy device 400 changes with the water level, and the buoyancy device 400 drives the second magnetic device 300 to move, and the second magnetic device 300 drives the first magnetic device 200 to slide along the slide rail 111, thereby changing the length of the slide rail 111 forming a loop, and the length of the slide rail 111 forming a loop changes the resistance of the slide rail 111. The resistance measuring device 500 can measure the resistance of the slide rail 111. By reading the resistance value and combining the principle that the length of the conductor material with equal cross-section is proportional to the resistance, the water level height can be calculated. Compared with the traditional water pressure sensor, the resistance water level measuring device is more stable and also improves the accuracy of water level measurement.

[0072] The main material of the hollow member 100 is an insulating material, and a conductive portion 112 is provided on the slide rail 111. The conductive portion 112 is a conductor material with relatively large resistance, and the conductor material is uniformly embedded in the slide rail 111 so that the slide rail 111 can conduct electricity. In this embodiment, the number of the slide rails 111 is two. In other embodiments, the number of the slide rails 111 may also be three or more, and those skilled in the art may select the number of the slide rails 111 according to actual needs.

[0073] In this embodiment, the hollow member 100 is tubular. In other embodiments, other specific shapes of the hollow member 100 that are considered appropriate by those skilled in the art may also be selected.

[0074] like Figure 5 and Figure 6 As shown, the first magnetic device 200 includes a first magnet 210 and a first roller 220, and the first roller 220 is connected to the first magnet 210. The slide rail 111 is a track groove, and the first roller 220 can slide along the track groove. Through the arrangement of the first roller 220, the friction of the first magnetic device 200 moving in the accommodating chamber 110 is reduced, so that the first magnetic device 200 is more convenient to slide in the accommodating chamber 110, the sliding of the first magnetic device 200 is smoother, and the water level measurement is more accurate. The first roller 220 is a conductor, so that the connection of the first roller 220 can make the multiple slide grooves conductive.

[0075] In this embodiment, the slide rail 111 is a track groove, and the first magnetic device 200 is provided with a first roller 220 matching the track groove to enable the first magnetic device 200 to slide on the slide rail 111. In other embodiments, the slide rail 111 may also be a protrusion, and the first magnetic device 200 may be provided with a groove matching the protrusion, and the first magnetic device 200 may also slide on the slide rail 111. Other specific structures of the slide rail 111 and the first magnetic device 200 that are considered appropriate by those skilled in the art may also be selected to enable the first magnetic device 200 to slide on the slide rail 111.

[0076] The first roller 220 includes a first roller body 221, a first connecting rod 222, a first rotating shaft 223 and a first spring 224. The two ends of the first connecting rod 222 are respectively rotatably connected to the first roller body 221 and the first rotating shaft 223, and the two ends of the first spring 224 are respectively connected to the first connecting rod 222 and the first magnet 210. By providing the first connecting rod 222, the first rotating shaft 223 and the first spring 224, the first roller 220 can move freely and appropriately, the first connecting rod 222 can rotate around the first rotating shaft 223, and the first spring 224 can play a buffering role, further reducing the friction force in the movement of the first roller 220, avoiding the first roller 220 from being stuck when sliding, making the rolling of the first roller 220 more sensitive, and further improving the accuracy of water level measurement.

[0077] In this embodiment, there are two first roller bodies 221, and the two first roller bodies 221 are respectively connected to the first rotating shaft 223 through the first connecting rod 222. In other embodiments, the number of the first rollers 220 can be three or more, and those skilled in the art can select the appropriate number of the first roller bodies 221 according to actual needs.

[0078] The second magnetic device 300 includes a second magnet 310, which is sleeved on the outer peripheral side of the hollow member 100. The second magnet 310 has opposite polarity to the first magnet 210. Under the action of magnetic force, the two attract each other. When the second magnet 310 moves, the second magnet 310 can drive the first magnetic device 200 to slide along the slide rail 111.

[0079] The second magnet 310 is annular, so that magnetic force can be generated in the circumferential direction of the hollow member 100, so that the attraction of the second magnet 310 to the first magnet 210 is more uniform, and the second magnet 310 drives the first magnet 210 to move better, further improving the accuracy of water level measurement. The second magnetic device 300 also includes a collar 320, which is sleeved on the outer peripheral side of the buoyancy member 410, the second magnet 310 is fixed on the collar 320, and the outer side of the collar 320 is connected to the buoyancy device 400.

[0080] The buoyancy device 400 includes a buoyancy member 410, the interior of which is used to contain gas. The buoyancy member 410 is connected to the second magnetic device 300, so that the buoyancy member 410 can float on the water surface 030, thereby driving the second magnetic device 300 connected to the buoyancy member 410 to move with the change of water level.

[0081] In this embodiment, the buoyancy member 410 is filled with gas to enable the buoyancy member 410 to float on the water surface 030. In other embodiments, the buoyancy member 410 may not be filled with gas, but a material with a density less than that of water may be selected as the buoyancy member 410 to enable the buoyancy member 410 to float on the water surface 030. Those skilled in the art may select a suitable structure and material of the buoyancy member 410 according to actual needs.

[0082] The buoyancy device 400 also includes a second roller 420, which is connected to the buoyancy member 410. The second roller 420 can slide along the outer surface of the hollow member 100, so that the buoyancy device 400 can be more stable when moving, and the second magnetic device 300 can move more smoothly, further improving the accuracy of water level measurement.

[0083] The second roller 420 includes a second roller body 421, a second connecting rod 422, a second rotating shaft 423 and a second spring 424. The two ends of the second connecting rod 422 are respectively rotatably connected to the second roller body 421 and the second rotating shaft 423, and the two ends of the second spring 424 are respectively connected to a plurality of second connecting rods 422. By providing the second connecting rod 422, the second rotating shaft 423 and the second spring 424, the second roller 420 can move freely and appropriately, the second connecting rod 422 can rotate around the second rotating shaft 423, and the second spring 424 can play a buffering role, further reducing the friction force in the movement of the second roller 420, preventing the second roller 420 from being stuck when sliding, making the rolling of the second roller 420 more sensitive, and further improving the accuracy of water level measurement.

[0084] In this embodiment, there are two second roller bodies 421, and the two second roller bodies 421 are respectively connected to the second rotating shaft 423 through the second connecting rod 422. In other embodiments, the number of the second rollers 420 can be three or more, and those skilled in the art can select the appropriate number of the second roller bodies 421 according to actual needs.

[0085] The resistive water level device is also provided with a pulling member 600, one end of which is connected to the buoyancy device 400. The operator assists the resistance water level device in moving by pulling the other end of the pulling member 600, so as to facilitate lifting the resistance water level device out of the underground observation well 010.

[0086] The resistance measuring device 500 includes a resistance measuring instrument 510 and a wire 520, wherein the wire 520 connects the resistance measuring instrument 510 and the slide rail 111, thereby forming a loop between the resistance measuring instrument 510 and the slide rail 111, so that the resistance measuring instrument 510 can measure the resistance of the slide rail 111. The surface of the wire 520 is an insulating material, and there are two wires 520, each of which is connected to the conductive part 112 on the slide rail 111.

[0087] Both ends of the accommodating chamber 110 are sealed, and dry gas is sealed in the accommodating chamber 110, so that the interior of the accommodating chamber 110 is always insulated, preventing moisture and other conductive materials in the external environment from entering the accommodating chamber 110 and affecting the measurement results, and preventing air with high humidity from entering the accommodating chamber 110 and forming a water film attached to the surface of the accommodating chamber 110 to change the conductivity, thereby further improving the accuracy of water level measurement.

[0088] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A resistance type water level measuring device, characterized in that: The resistance type water level measuring device comprises a hollow member, a first magnetic device, a second magnetic device, a buoyancy device and a resistance measuring device; The hollow part has an accommodating cavity inside, the first magnetic device is arranged in the accommodating cavity, the surface of the accommodating cavity has a plurality of slide rails, the slide rails and the first magnetic device are electrically conductive, and the first magnetic device is respectively connected to the plurality of slide rails; The second magnetic device is arranged on the outside of the hollow part, and the second magnetic device can drive the first magnetic device to slide along the slide rail. The second magnetic device is connected to the buoyancy device, and the buoyancy device is used to float on the water surface. The resistance measuring device can measure the resistance of the slide rail.

2. The resistance type water level measuring device according to claim 1, characterized in that: The first magnetic device includes a first magnet and a first roller, and the first roller is connected to the first magnet; The slide rail is a track groove, and the first roller can slide along the track groove.

3. The resistance type water level measuring device according to claim 2, characterized in that: The first roller comprises a first roller body, a first connecting rod, a first rotating shaft and a first spring; Two ends of the first connecting rod are rotatably connected to the first roller body and the first rotating shaft respectively, and two ends of the first spring are respectively connected to the first connecting rod and the first magnet.

4. The resistance type water level measuring device according to claim 2, characterized in that: The second magnetic device includes a second magnet, the second magnet is sleeved on the outer peripheral side of the hollow member, and the polarity of the second magnet is opposite to that of the first magnet.

5. The resistance type water level measuring device according to claim 4, characterized in that: The second magnet is annular.

6. The resistance type water level measuring device according to claim 1, characterized in that: The buoyancy device comprises a buoyancy member, the interior of the buoyancy member is used to contain gas, and the buoyancy member is connected to the second magnetic device.

7. The resistance type water level measuring device according to claim 6, characterized in that: The buoyancy device further comprises a second roller, the second roller being connected to the buoyancy member and being capable of sliding along the outer surface of the hollow member.

8. The resistance type water level measuring device according to claim 7, characterized in that: The second roller comprises a second roller body, a second connecting rod, a second rotating shaft and a second spring; Two ends of the second connecting rod are respectively rotatably connected to the second roller body and the second rotating shaft, and two ends of the second spring are respectively connected to a plurality of second connecting rods.

9. The resistance type water level measuring device according to any one of claims 1 to 8, characterized in that: The resistance measuring device comprises a resistance measuring instrument and a wire, wherein the wire connects the resistance measuring instrument and the slide rail.

10. The resistance type water level measuring device according to any one of claims 1 to 8, characterized in that: Both ends of the accommodating cavity are sealed, and the accommodating cavity is used to seal dry gas.

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