Measuring device for detecting water level in water conservancy project

Abstract

The utility model provides a measuring device for detecting the water level of a water conservancy project, which comprises a pressure detection assembly placed in a water body and a support fixed on the shore side through a bolt, the pressure detection assembly comprises a shell, a lever and a pressure sensor, a balancing weight is fixedly arranged on the inner wall of the shell, and the lever is arranged on the balancing weight. The pressure sensor is fixedly connected to the upper surface of the bottom of the shell, a containing groove is formed in the inner wall of the bottom of the side, away from the pressure sensor, of the shell, and a piston is arranged in the containing groove in a sliding fit mode; according to the utility model, the lever and the piston are arranged, and the arm of force of the lever on one side of the pressure sensor is smaller than the arm of force of the lever on one side of the piston, so that the pressure on the pressure sensor is amplified, the obtained detection data is more accurate, and the accuracy of the device is improved; therefore, the pressure sensor is prevented from being damaged by foreign matters in water.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering measurement technology, and in particular to a water level measuring device for water conservancy engineering. Background Technology

[0002] Water level is one of the most important parameters in water conservancy projects. It directly affects the water volume scheduling and operation management of water bodies such as reservoirs, rivers, and canals. By measuring the water level, we can understand the changes in the water level in real time and provide basic data for the management and scheduling of water conservancy projects.

[0003] A search revealed a Chinese patent publication number CN209639795U, which discloses a pressure-type water level gauge, including a water level gauge housing, a pressure monitoring component, a filter plate, and an end cap. The pressure monitoring component is disposed inside the water level gauge housing, and the filter plate is disposed at the bottom of the water level gauge housing. A first water-containing chamber is formed between the filter plate and the pressure monitoring component. The end cap is disposed below the filter plate, and the outer edge of the end cap is connected to the outer wall of the water level gauge housing. A second water-containing chamber is formed between the end cap and the filter plate, and the end cap has multiple water inlet holes communicating with the second water-containing chamber.

[0004] The aforementioned patent has the following shortcomings: it can intercept foreign objects in the water by setting up a filter plate, thereby preventing foreign objects from clogging the internal chamber of the water level gauge and damaging the pressure monitoring components. However, the method and principle it adopts are still to let water flow into the housing and come into contact with the sensor core of the pressure water level gauge, and use the sensor core to detect the water pressure, thereby obtaining the height from the end of the pressure water level gauge to the water surface. The numerical error obtained by this method is large.

[0005] Therefore, a measuring device for detecting water levels in water conservancy projects is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide a measuring device for detecting water levels in water conservancy projects, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0007] The technical solution of this utility model embodiment is implemented as follows: A water level measuring device for water conservancy projects includes a pressure detection component placed in the water body and a bracket fixed to the bank by bolts. The pressure detection component includes a housing, a lever, and a pressure sensor. A counterweight is fixedly installed on the inner wall of the housing. The lever is rotatably connected to the inside of the housing through a rotating shaft. The pressure sensor is fixedly connected to the upper surface of the bottom of the housing. A receiving groove is opened on the inner wall of the bottom of the housing away from the pressure sensor. A piston is slidably fitted in the receiving groove, and a hollow plate is fixedly connected to the bottom of the receiving groove. One end of the lever contacts the sensing end of the pressure sensor through a contact, and the other end of the lever contacts the top of the piston through a contact. The lever arm on the side of the pressure sensor is smaller than the lever arm on the side of the piston.

[0008] In some embodiments, a rotating shaft is rotatably connected to the inner wall of the bracket, and a corrugated hose is wound around the outer wall of the rotating shaft. One end of the corrugated hose passes through the bracket and is fixed to the inner wall of the bracket, and the other end of the corrugated hose is movably connected to the pressure detection component through a connector.

[0009] In some embodiments, the connector includes a connecting cylinder integrally formed with the housing and an internally threaded sleeve that is movably fitted to the outer wall of the corrugated hose, wherein the outer wall of the connecting cylinder is provided with an external thread that is adapted to the internally threaded sleeve.

[0010] In some embodiments, sealing rings are fixedly connected to opposite sides of the corrugated hose and the connecting cylinder, and two limiting rings for limiting the internal threaded sleeve are fixedly installed on the outer wall of the corrugated hose, with the lower limiting ring being fixedly connected to the sealing ring.

[0011] In some embodiments, a retraction assembly for retracting and extending the corrugated hose is provided on one outer wall of the bracket. The retraction assembly includes a knob and a connecting rod, and a handle is rotatably connected to the outer wall of the connecting rod.

[0012] In some embodiments, the inner wall of the knob is fixedly connected with a plurality of radially arranged flat keys, and the inner wall of the rotating shaft is provided with a keyway that fits with the flat keys with clearance.

[0013] In some embodiments, the outer wall of the knob is provided with a plurality of radially arranged teeth, and the inner wall of the bracket is provided with a tooth groove that cooperates with the teeth for positioning.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. A water level measuring device for hydraulic engineering, which, by setting up a lever and a piston, amplifies the pressure at the pressure sensor because the lever arm on the side of the pressure sensor is smaller than the lever arm on the side of the piston, resulting in more accurate detection data and improved device accuracy. In addition, the piston setting can also prevent water flow from directly contacting the pressure sensor, thereby preventing foreign objects in the water from damaging the pressure sensor.

[0016] 2. A water level measuring device for hydraulic engineering, which, by setting a connecting cylinder and an internal threaded sleeve, enables quick connection and disassembly of the corrugated hose and the shell through their mutual cooperation, thereby facilitating the replacement of the shell and improving the ease of use. The setting of a sealing ring can improve the tightness and waterproofness of the connection between the corrugated hose and the shell.

[0017] 3. A water level measuring device for hydraulic engineering, which can realize the winding and unwinding of corrugated hose by rotating a rotating shaft, can adjust the water immersion depth of the pressure detection component to obtain different measurement depths, and can realize the rotation locking of the rotating shaft by the cooperation of the groove and teeth, so that the depth of the pressure detection component in the water body remains unchanged.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the main view of the present invention.

[0021] Figure 2 This is a cross-sectional view of the pressure detection component of this utility model;

[0022] Figure 3 This is a cross-sectional view of the connector structure of this utility model;

[0023] Figure 4 This is a schematic diagram showing the connection between the bracket, the rotating shaft, and the corrugated hose of this utility model;

[0024] Figure 5 This is a schematic diagram of the retractable component structure of this utility model.

[0025] Figure label:

[0026] 1. Pressure detection assembly; 2. Connector; 3. Corrugated hose; 4. Bracket; 5. Rotary shaft one; 6. Housing;

[0027] 7. Counterweight; 8. Lever; 9. Pressure sensor; 10. Second pivot; 11. Hollowed-out plate; 12. Piston;

[0028] 13. Connecting cylinder; 14. Sealing ring; 15. Internal threaded sleeve; 16. Limiting ring; 17. Keyway; 18. Toothed groove;

[0029] 19. Tooth; 20. Knob; 21. Key; 22. Linkage rod; 23. Handle. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] Example 1:

[0034] like Figure 1-5 As shown, a water level measuring device for water conservancy projects includes a pressure detection component 1 placed in the water body and a bracket 4 fixed to the bank by bolts.

[0035] The pressure detection assembly 1 includes a housing 6, a lever 8, and a pressure sensor 9. A counterweight 7 is fixedly installed on the inner wall of the housing 6. The lever 8 is rotatably connected to the inside of the housing 6 via a rotating shaft 10. The pressure sensor 9 is fixedly connected to the upper bottom surface of the housing 6. A receiving groove is opened on the inner bottom wall of the housing 6 away from the pressure sensor 9. A piston 12 is slidably fitted in the receiving groove, and a hollow plate 11 is fixedly connected to the bottom of the receiving groove. One end of the lever 8 contacts the sensing end at the top of the pressure sensor 9 through a contact, and the other end of the lever 8 contacts the top of the piston 12 through a contact. The lever arm of the lever 8 on the side of the pressure sensor 9 is smaller than the lever arm of the lever 8 on the side of the piston 12.

[0036] When the pressure detection assembly 1 is thrown into the water, the water flow will impact the piston 12 through the perforated plate 11. Since the lever arm of the lever 8 on the side of the pressure sensor 9 is smaller than the lever arm of the lever 8 on the side of the piston 12, the pressure on the pressure sensor 9 will be amplified, thus obtaining more accurate data.

[0037] By setting up lever 8 and piston 12, the pressure on the pressure sensor 9 is amplified because the lever arm of lever 8 on the side of pressure sensor 9 is smaller than the lever arm of lever 8 on the side of piston 12. This results in more accurate detection data and improves the accuracy of the device. In addition, the setting of piston 12 can also prevent water from directly contacting the pressure sensor 9, thereby preventing foreign objects in the water from damaging the pressure sensor 9.

[0038] In this embodiment, as Figure 1 As shown, a rotating shaft 5 is rotatably connected to the inner wall of the bracket 4, and a corrugated hose 3 is wound around the outer wall of the rotating shaft 5. One end of the corrugated hose 3 passes through the bracket 4 and is fixed to the inner wall of the bracket 4, and the other end of the corrugated hose 3 is movably connected to the pressure detection component 1 through the connector 2.

[0039] The corrugated hose 3 can connect the pressure detection component 1 and the bracket 4, and its hollow nature can also ensure that the air pressure inside the housing 6 is always consistent with the atmospheric pressure.

[0040] like Figure 1 , 3 As shown, the connector 2 includes a connecting cylinder 13 integrally formed with the housing 6 and an internally threaded sleeve 15 that is movably fitted to the outer wall of the corrugated hose 3. The outer wall of the connecting cylinder 13 is provided with an external thread that is adapted to the internally threaded sleeve 15.

[0041] A sealing ring 14 is fixedly connected to each other on the opposite side of the corrugated hose 3 and the connecting cylinder 13. Two limiting rings 16 for limiting the internal threaded sleeve 15 are fixedly installed on the outer wall of the corrugated hose 3. The lower limiting ring 16 is fixedly connected to the sealing ring 14.

[0042] First, move the inner threaded sleeve 15 to the upper limiting ring 16, then align and fit the two sealing rings 14, and then rotate the inner threaded sleeve 15 to screw it into the connecting cylinder 13 until the top lower surface of the inner threaded sleeve 15 fits into the lower limiting ring 16; when it is necessary to remove the corrugated hose 3 from the housing 6, rotate the inner threaded sleeve 15 to disengage it from the connecting cylinder 13.

[0043] By setting the connecting sleeve 13 and the internal threaded sleeve 15, the corrugated hose 3 and the housing 6 can be quickly connected and disassembled through their cooperation, which facilitates the replacement of the housing 6 and improves the ease of use. The sealing ring 14 can improve the tightness and waterproofness of the connection between the corrugated hose 3 and the housing 6.

[0044] Example 2:

[0045] A water level measuring device for hydraulic engineering projects, this embodiment is improved based on embodiment 1 as follows, such as... Figure 1 , 4 As shown in Figure 5:

[0046] The bracket 4 has a retraction assembly for retracting the corrugated hose 3 on one side of its outer wall. The retraction assembly includes a knob 20 and a connecting rod 22. A handle 23 is rotatably connected to the outer wall of the connecting rod 22.

[0047] The inner wall of the knob 20 is fixedly connected with a plurality of radially arranged flat keys 21, and the inner wall of the rotating shaft 5 is provided with a keyway 17 that is clearance-fitted with the flat keys 21.

[0048] The outer wall of the knob 20 is provided with a plurality of radially arranged teeth 19, and the inner wall of the bracket 4 is provided with a tooth groove 18 that is matched with the teeth 19 for positioning.

[0049] When the groove 18 and the tooth 19 engage, the knob 20 is restricted from rotating the shaft 5. Therefore, the knob 20 needs to be pulled outward to disengage the groove 18 and the tooth 19. Then, by holding the handle 23 and using the connecting rod 22, the knob 20 is rotated around the axis of the shaft 5. With the cooperation of the keyway 17 and the knob 20, the knob 20 can rotate the shaft 5, thereby enabling the winding and unwinding of the corrugated hose 3. This allows for adjusting the measurement depth of the pressure detection component 1 and removing the pressure detection component 1 from the water. After winding and unwinding, the knob 20 is pushed to re-engage the groove 18 and the tooth 19, locking the rotation of the shaft 5.

[0050] The corrugated hose 3 can be wound and unwound by rotating the shaft 5, which can adjust the water immersion depth of the pressure detection component 1 to obtain different measurement depths. Furthermore, the rotation of the shaft 5 can be locked by the cooperation of the groove 18 and the teeth 19, so that the depth of the pressure detection component 1 in the water remains unchanged.

[0051] Working principle: The bracket 4 is fixed to the bank of the water body using bolts. Pulling the knob 20 outward causes the groove 18 and teeth 19 to disengage. At this time, the knob 20 is unrestricted. Holding the handle 23, the knob 20 is rotated by the connecting rod 22. With the cooperation of the keyway 17 and the key 21, the rotating shaft 5 can be rotated synchronously, realizing the unwinding of the corrugated hose 3. Then, the pressure detection assembly 1 is placed into the water body. After determining the position, the knob 20 is pushed, causing the groove 18 and teeth 19 to mesh together, realizing the locking of the rotating shaft 5. The pressure detection assembly 1 can maintain the current depth. After the water flows through the hollow plate 11, it impacts the piston 12. The lever 8 applies pressure to the sensing end of the pressure sensor 9. Since the lever 8 is located on the side of the pressure sensor 9, the lever arm is... The lever arm of the lever 8 located on the side of the piston 12 is smaller than that of the lever 8, so the pressure on the pressure sensor 9 will be amplified, and the obtained detection data will be more accurate. If the pressure detection component 1 needs to be replaced, after releasing the rotation lock of the rotating shaft 5, rotate the handle 23 to drive the rotating shaft 5 to rotate in the opposite direction, rewind the corrugated hose 3, remove the pressure detection component 1 from the water body, then rotate the inner threaded sleeve 15 to disengage it from the connecting cylinder 13, then move the inner threaded sleeve 15 to the upper limit ring 16, then align and fit the sealing ring 14 in the new pressure detection component 1 with the sealing ring 14 on the corrugated hose 3, then rotate the inner threaded sleeve 15 to screw it into the connecting cylinder 13 until the lower surface of the top of the inner threaded sleeve 15 fits into the lower limit ring 16.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A water level measuring device for hydraulic engineering, comprising a pressure detection component (1) placed in the water body and a bracket (4) fixed to the bank by bolts, characterized in that: The pressure detection assembly (1) includes a housing (6), a lever (8), and a pressure sensor (9). A counterweight (7) is fixedly installed on the inner wall of the housing (6). The lever (8) is rotatably connected to the inside of the housing (6) through a rotating shaft (10). The pressure sensor (9) is fixedly connected to the upper bottom surface of the housing (6). A receiving groove is opened on the inner bottom wall of the side of the housing (6) away from the pressure sensor (9). A piston (12) is slidably fitted in the receiving groove. A hollow plate (11) is fixedly connected to the bottom of the receiving groove. One end of the lever (8) is in contact with the sensing end of the top of the pressure sensor (9) through a contact. The other end of the lever (8) is in contact with the top of the piston (12) through a contact. The lever arm of the lever (8) on the side of the pressure sensor (9) is smaller than the lever arm of the lever (8) on the side of the piston (12).

2. The water level measuring device for hydraulic engineering as described in claim 1, characterized in that: The inner wall of the bracket (4) is rotatably connected to a rotating shaft (5), and the outer wall of the rotating shaft (5) is wrapped with a corrugated hose (3). One end of the corrugated hose (3) passes through the bracket (4) and is fixed to the inner wall of the bracket (4). The other end of the corrugated hose (3) is movably connected to the pressure detection component (1) through a connector (2).

3. The water level measuring device for hydraulic engineering as described in claim 2, characterized in that: The connector (2) includes a connecting cylinder (13) integrally formed with the housing (6) and an internal threaded sleeve (15) movably fitted to the outer wall of the corrugated hose (3). The outer wall of the connecting cylinder (13) is provided with an external thread that is adapted to the internal threaded sleeve (15).

4. The water level measuring device for hydraulic engineering according to claim 3, characterized in that: A sealing ring (14) is fixedly connected to the opposite side of the corrugated hose (3) and the connecting cylinder (13). Two limiting rings (16) for limiting the inner threaded sleeve (15) are fixedly installed on the outer wall of the corrugated hose (3). The lower limiting ring (16) is fixedly connected to the sealing ring (14).

5. The water level measuring device for hydraulic engineering as described in claim 1, characterized in that: The bracket (4) has a retraction assembly on one side of its outer wall for retracting the corrugated hose (3). The retraction assembly includes a knob (20) and a connecting rod (22). The outer wall of the connecting rod (22) is rotatably connected to a handle (23).

6. The water level measuring device for hydraulic engineering according to claim 5, characterized in that: The inner wall of the knob (20) is fixedly connected with a plurality of radially arranged flat keys (21), and the inner wall of the rotating shaft (5) is provided with a keyway (17) that is clearance-fitted with the flat keys (21).

7. A water level measuring device for hydraulic engineering according to claim 6, characterized in that: The outer wall of the knob (20) is provided with a plurality of radially arranged teeth (19), and the inner wall of the bracket (4) is provided with a tooth groove (18) that is matched with the teeth (19).

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