Flow measuring weir with adjustable weir crest

Abstract

The utility model discloses a weir with an adjustable weir crest, which comprises a weir body, a weir channel is arranged on the weir body, and a plate groove is arranged on the side wall of the weir channel; the deformed weir plate is stably installed relative to the weir body by being clamped into the plate groove and comprises a plate body with an inner triangular notch and a sealing plate overturning relative to the plate body, and the upper end, matched with the triangular notch, of the sealing plate is flush with the plate body; the measuring weir can adjust the height and the shape of the weir crest according to the change of water environment conditions such as water level and drainage, meets the change adjustment of seepage flow, is simple in structure, convenient to operate and good in stability, and has wide popularization prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of dam monitoring, in particular to a water-measuring weir with an adjustable weir mouth. Background Art

[0002] After the reservoir is built, the changes in water level and foundation conditions will have a great impact on the working conditions of the dam, bedrock, dam shoulders, bank slopes and underground buildings. In particular, after the dam is filled with water, a hydraulic load is generated on the dam, and under the action of the upstream and downstream water level difference, seepage occurs on the dam body, dam foundation and around the dam. Therefore, according to the requirements of relevant specifications, it is necessary to observe and measure the seepage flow through the dam body, dam foundation and around the dam on both sides.

[0003] The traditional water measuring weir has a fixed weir mouth and poor adaptability to changes in the water environment. Therefore, the measurement is relatively rigid. It is difficult to make adaptive adjustments when encountering dams with easily changing water conditions, so that the measurement results cannot truly reflect the actual leakage situation. Utility Model Content

[0004] In view of the prior art, the purpose of the utility model is to provide a universal water measuring weir structure capable of adjusting the weir mouth according to demand.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a water-measuring weir with an adjustable weir mouth, including a weir body, a weir channel on the weir body, and a plate groove on the side wall of the weir channel; a deformable weir plate is stably installed relative to the weir body by being inserted into the plate groove; the deformable weir plate includes a plate body with an inner triangular groove, and a sealing plate flipped relative to the plate body, the sealing plate matches the triangular groove and the upper end is arranged flush with the plate body.

[0006] As a further configuration of the above scheme, a secondary cavity is also provided on the side wall of the flow channel of the weir body relative to the weir channel. The secondary cavity is located in the weir body and is grooved in the opposite direction of the water flow direction of the weir channel. A mesh screen is provided between the secondary cavity and the weir channel.

[0007] As a further configuration of the above scheme, a cable winding device is further provided on the weir body, and a cable having one end connected to the deformable weir plate is provided on the cable winding device, and the cable is used to control the deformable weir plate to flip.

[0008] As a further configuration of the above scheme, the plate groove of the weir body includes side grooves and bottom grooves, the deformable weir plate and the bottom groove of the weir body are arranged to be raised and lowered, and the vertical height dimension of the deformable weir plate is greater than the depth of the weir channel.

[0009] As a further configuration of the above scheme, an operating wheel, a threaded rod shaft and a linkage shaft are provided on the weir body, an internal threaded part is fixed on the deformable weir plate, the threaded rod shaft thread cooperates with the internal threaded part to drive the deformable weir plate to rise and fall, and a gear part is also provided between the linkage shaft and the threaded rod shaft for meshing linkage and for horizontal lifting of the deformable weir plate.

[0010] As a further configuration of the above solution, water sealing strips are provided between the deformable weir plate, the sealing plate and the weir body.

[0011] Beneficial effects: The water measuring weir of the utility model can adjust the height and shape of the weir mouth according to the changes of water environment conditions such as water level and drainage to meet the change of seepage volume. When the water measuring weir is in normal use, the deformed weir plate is raised and lowered by operating the operating wheel on one side. At this time, the sealing plate is located above the deformed weir plate, and the entire deformed weir plate is set in the shape of a large triangular notch. When the seepage volume changes, it is adjusted and flipped through the cooperation of two groups of four cable winding devices on both sides to meet the needs of seepage volume. The practical water measuring weir has a simple structure, is easy to operate, has good stability, and has broad promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the water measuring weir of the utility model.

[0013] Figure 2 It is a front view of the water measuring weir of the utility model.

[0014] Figure 3 Diagram of the changing states of the water measuring weir of the utility model.

[0015] Figure numerals: 1. weir body; 2. weir channel; 3. plate groove; 31. side groove; 32. bottom groove; 4. deformable weir plate; 40. plate body; 41. triangular notch; 42. sealing plate; 51. operating wheel; 52. threaded rod shaft; 53. linkage shaft; 54. internal threaded part; 55. gear part; 6. secondary cavity; 61. mesh screen; 7. cable winding device; 71. cable. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] like Figure 1-3The weir shown is a water-measuring weir with an adjustable weir opening, comprising a weir body 1, a weir channel 2 being provided on the weir body 1, and a plate groove 3 being provided on the side wall of the weir channel 2; a deformable weir plate 4 being stably installed relative to the weir body 1 by being inserted into the plate groove 3; the deformable weir plate 4 comprises a plate body 40 with an inner triangular notch 41, and a sealing plate 42 flipped relative to the plate body 40, the sealing plate 42 being matched with the triangular notch 41 and the upper end of which is arranged flush with the plate body 40.

[0018] As a further arrangement of the above scheme, a secondary cavity 6 is further arranged on the side wall of the flow channel of the weir body 1 relative to the weir channel 2. The secondary cavity 6 is located in the weir body 1 and is slotted opposite to the water flow direction of the weir channel 2. A partition grid 61 is arranged between the secondary cavity 6 and the weir channel 2 for communication. The secondary cavity 6 is arranged so that it can be used for the detection of some special measuring equipment. The U-shaped deflection cavity can allow some measuring equipment to avoid high-speed water flow and provide a suitable measuring environment.

[0019] As a further configuration of the above scheme, a cable winding device 7 is further provided on the weir body 1 , and a cable 71 having one end connected to the deformable weir plate 4 is provided on the cable winding device 7 , and the cable 71 is used to control the deformable weir plate 4 to flip.

[0020] As a further configuration of the above scheme, the plate groove 3 of the weir body 1 includes a side groove 31 and a bottom groove 32 , the deformable weir plate 4 and the bottom groove 32 of the weir body 1 are arranged to be raised and lowered, and the vertical height dimension of the deformable weir plate 4 is greater than the depth of the weir channel 2 .

[0021] As a further configuration of the above scheme, an operating wheel 51, a threaded rod shaft 52 and a linkage shaft 53 are provided on the weir body 1, an internal threaded part 54 is fixed on the deformable weir plate 4, the threaded rod shaft 52 is threadedly matched with the internal threaded part 54 to drive the deformable weir plate 4 to rise and fall, and a gear part 55 is also provided between the linkage shaft 53 and the threaded rod shaft 52 for meshing linkage and for horizontal lifting of the deformable weir plate 4.

[0022] As a further configuration of the above solution, water sealing strips are provided between the deformable weir plate 4 , the sealing plate 42 and the weir body 1 .

[0023] Example: Figure 1-3The water measuring weir structure of the present embodiment shown in the figure comprises a weir body 1 as a main body, a plate groove 3 is arranged on the weir body 1, a deformable weir plate 4 is vertically lifted and inserted into the plate groove 3, and a lifting structure and a flipping structure are arranged on the side walls on both sides of the weir body 1, the lifting structure comprises an operating wheel 51, a threaded rod shaft 52 and a linkage shaft 53, and an internal threaded part 54 is also arranged on the deformable weir plate 4. When in use, by rotating the operating wheel 51 on one side, the threaded rod shaft 52 fixedly connected to the operating wheel 51 rotates accordingly, and the thread cooperates with the internal threaded part 54 fixed on the deformable weir plate 4, thereby driving the deformable weir plate 4 to lift and lower axially along the threaded rod shaft 52, and a linkage shaft 53 is also arranged between the threaded rod shafts 52 on both sides, and the linkage shaft 53 is meshed with the threaded rod shaft 52 and a gear part 55 is arranged on the gear part 55 for transmission. It is worth noting that the gear part 55 of the present embodiment adopts a helical gear, and the thread directions of the threaded rod shafts 52 and the internal threaded part 54 on both sides are set, Thereby, when the threaded rod shaft 52 on either side rotates, the threaded rod shaft 52 on the other side is transmitted to the action of the threaded rod shaft 52 on the other side, which must drive the two sides of the deformed weir plate 4 to rise or lower synchronously; further, the flipping structure of the present embodiment is relatively simple, including a cable winding device 7 and a cable 71, the sealing plate 42 is hinged relative to the deformed weir plate 4, and the sealing plates 42 on both sides are staggered. The purpose of the staggered setting is to avoid interference during flipping. The cable 71 is arranged on the other two corners of the sealing plate 42 of the triangular structure that are relatively hinged. Through the coordinated pulling of the two sides, the sealing plate 42 swings. The cable 71 of the present embodiment pulls the sealing plate 42 to drive it to flip, and it does not only rely on the pulling force of the cable 71, but also involves the center of gravity of the sealing plate 42 shifting after pulling the sealing plate 42. When the center of gravity changes, the sealing plate 42 automatically flips into place with gravity. The cable 71 provides more of a center of gravity adjustment force to cause its center of gravity to shift and flip.

[0024] Furthermore, some water seals are provided on the deformable weir plate 4, the sealing plate 42 and the weir body 1 of this embodiment. Although not shown in the figure, the purpose of providing the water seals is to increase the water flow resistance a little, but it will not cause too strong friction resistance to its lifting and turning.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A water-measuring weir with adjustable weir opening, characterized in that: include: A weir body (1) is provided with a weir channel (2), and a side wall of the weir channel (2) is provided with a plate groove (3); a deformable weir plate (4) is stably installed relative to the weir body (1) by being inserted into the plate groove (3); the deformable weir plate (4) comprises a plate body (40) with an inner triangular notch (41), and a sealing plate (42) turned relative to the plate body (40), the sealing plate (42) matching the triangular notch (41) and having an upper end flush with the plate body (40).

2. The adjustable water-measuring weir according to claim 1, characterized in that: The weir body (1) is further provided with a secondary cavity (6) on the side wall of the flow channel opposite to the weir channel (2); the secondary cavity (6) is located in the weir body (1) and is slotted in the opposite direction of the water flow direction of the weir channel (2); a mesh screen (61) is provided between the secondary cavity (6) and the weir channel (2) for communication.

3. The adjustable water-measuring weir according to claim 1, characterized in that: The weir body (1) is also provided with a cable winding device (7), and the cable winding device (7) is provided with a cable (71) having one end connected to the deformable weir plate (4), and the cable (71) is used to control the deformable weir plate (4) to flip.

4. The adjustable water-measuring weir according to claim 1, characterized in that: The plate groove (3) of the weir body (1) comprises a side groove (31) and a bottom groove (32), the deformable weir plate (4) and the bottom groove (32) of the weir body (1) are arranged to be raised and lowered, and the vertical height dimension of the deformable weir plate (4) is greater than the depth of the weir channel (2).

5. The adjustable water-measuring weir according to claim 4, characterized in that: The weir body (1) is provided with an operating wheel (51), a threaded rod shaft (52) and a linkage shaft (53); an internal threaded part (54) is fixed to the deformable weir plate (4); the threaded rod shaft (52) is threadedly engaged with the internal threaded part (54) to drive the deformable weir plate (4) to rise and fall; a gear part (55) is also provided between the linkage shaft (53) and the threaded rod shaft (52) to mesh and link with each other for horizontally raising and lowering the deformable weir plate (4).

6. The adjustable water-measuring weir according to claim 1, characterized in that: Water sealing strips are provided between the deformable weir plate (4), the sealing plate (42) and the weir body (1).

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