Stay wire type open channel flow velocity detection device

Abstract

The utility model discloses a stay wire type open channel flow velocity detection device which is provided with a flow velocity sensor located in an open channel and a door frame located above the open channel, and the flow velocity sensor is connected with the door frame through a pulley mechanism. The pulley mechanism comprises a movable pulley installed on the portal and a fixed pulley installed at the bottom of the open channel, and the center of the movable pulley and the center of the fixed pulley are located on the same straight line. The flow velocity sensor is connected with the movable pulley and the fixed pulley through a sliding rope. Interference of the supporting column on water flow can be removed, accuracy of flow velocity detection results is improved, meanwhile, the inhaul cable structure controls the flow velocity sensor to ascend and descend, interference on the water flow is reduced, detection precision of the flow velocity sensor is improved, management efficiency of water resources is improved, and accurate and important data support is provided for drainage of flood and drainage and early warning in advance.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a pull-wire type open channel flow velocity detection device. Background Technology

[0002] An open channel is a channel with free surface water flow. Open channels are divided into artificial open channels and natural open channels. Artificial open channels are all constructed and dug by humans, such as irrigation open channels. Natural open channels refer to natural waterways.

[0003] To prevent problems such as defects, severe leakage, and water volume reduction in open channels, it is necessary to regularly monitor the flow of open channels to improve the efficiency of water resource management.

[0004] Meanwhile, when urban flooding or floods occur, the flow monitoring system of open channels can also play a role in drainage and early warning, providing important data support in responding to natural disasters.

[0005] Traditional open channel flow measurement devices involve fixing a support column to the bottom of the open channel and installing a lifting device on the support column. The position of the flow velocity sensor is adjusted by the lifting device to measure the flow rate. However, installing the support column inside the open channel significantly affects the flow velocity, resulting in poor accuracy and precision in flow velocity measurement. Furthermore, the lifting device is constantly submerged in water, increasing its waterproofing requirements, accelerating its aging process, shortening its lifespan, and increasing construction and maintenance costs.

[0006] In addition, underwater construction is difficult and maintenance is challenging, making it extremely inconvenient to construct and maintain the canal flow detection device, which makes the construction and maintenance work quite time-consuming and laborious. Utility Model Content

[0007] The purpose of this invention is to provide a cable-operated open channel flow velocity detection device that can eliminate the interference of the support column on the water flow, improve the accuracy of the flow velocity detection results, and at the same time, the cable structure controls the raising and lowering of the flow velocity sensor, reducing interference with the water flow and improving the detection accuracy of the flow velocity sensor.

[0008] The key feature of the pull-wire open channel flow velocity detection device is that it is equipped with a flow velocity sensor located inside the open channel and a gantry located above the open channel. The flow velocity sensor is connected to the gantry through a pulley mechanism.

[0009] The pulley mechanism includes a movable pulley mounted on the gantry and a fixed pulley mounted on the bottom of the open channel, and the centers of the movable pulley and the fixed pulley are located on the same straight line;

[0010] The flow rate sensor is connected to the movable pulley and the fixed pulley via a sliding rope.

[0011] The two supports of the gantry are respectively installed on the ground on both sides of the open channel.

[0012] The gantry is installed above the open channel, which avoids long-term impact and corrosion from water, thus effectively reducing the waterproofing requirements of the gantry, slowing down the aging process, extending the service life of the gantry, reducing the construction and maintenance costs and difficulties, and improving the efficiency of construction and maintenance.

[0013] The cable structure controls the raising and lowering of the flow velocity sensor, reducing interference with the water flow and improving detection accuracy.

[0014] Furthermore, a mounting plate is fixed on the flow velocity sensor, with an upper mounting lug and a lower mounting lug installed at one end of the mounting plate, and a sliding rope through hole at the other end of the mounting plate;

[0015] One end of the sliding rope is connected to the upper mounting lug. After the sliding rope passes around the movable pulley, it passes through the sliding rope through-hole, then around the fixed pulley. The other end of the sliding rope is connected to the lower mounting lug.

[0016] By controlling the rotation of the movable pulley, the flow velocity sensor can be raised or lowered as the pulley rotates, thus enabling the flow velocity sensor to detect flow velocity at any height below the water level, thereby satisfying the flow velocity measurement requirements under any water level conditions.

[0017] The sliding rope through the hole can limit the sliding rope, and together with the movable pulley and the fixed pulley, it can prevent the flow velocity sensor from deflecting in the water, so that the flow velocity sensor is aligned with the direction of water flow.

[0018] Furthermore, the gantry is equipped with a driven gear, which rotates synchronously with the movable pulley;

[0019] A flow rate processor is installed on the side wall of the driven gear. The signal terminal of the flow rate processor is connected to a signal line, which passes around the driven gear and connects to the flow rate sensor.

[0020] The flow rate processor follows the rotation of the movable pulley, enabling reliable extension and retraction of the signal line and protecting the signal line.

[0021] Furthermore, the movable pulley is coaxially mounted with a driving gear, and the driven gear is coaxially mounted with a driven gear, with the driving gear and the driven gear meshing.

[0022] The driving gear meshes with the driven gear, causing the movable pulley to drive the driven gear to rotate, thereby achieving synchronous rotation of the movable pulley and the driven gear.

[0023] Alternatively, the movable pulley and the driven gear can be installed coaxially, but the distance between them needs to be increased to avoid the signal line and the sliding rope from getting tangled together.

[0024] Furthermore, the sliding rope is wound in the opposite direction to the signal line.

[0025] Furthermore, the two pillars of the gantry are equipped with telescopic support rods, which are telescopic rods with a screw and nut structure.

[0026] Furthermore, a crossbar is directly fixed to the two support pillars, and the crossbar is equipped with the movable pulley, the driven gear, and the motor. The motor is connected to the movable pulley via a rotating shaft.

[0027] The gantry is installed outside the open channel, which not only provides stable support for the pulley mechanism, but also enables the overall lifting and lowering control of the pulley structure, eliminating the interference of the support column on the water flow, thereby improving the accuracy of the flow velocity detection results.

[0028] In addition, installing the supports on both sides of the open channel can prevent long-term impact and corrosion of the supports by water, which could damage the telescopic support rods inside the supports. This reduces the waterproofing requirements of the telescopic support rods, slows down their aging, extends their service life, reduces construction and maintenance costs and difficulties, and improves construction and maintenance efficiency.

[0029] At the same time, the telescopic support rod can extend the support column, thereby lifting the fixed pulley at the bottom of the open channel, and removing foreign objects such as mud and sand from the fixed pulley through the impact of water flow.

[0030] Furthermore, an installation groove is provided at the bottom of the open channel, and a pulley mounting bracket is installed in the installation groove, on which the fixed pulley is fixedly installed.

[0031] When the pulley mounting bracket is installed in the mounting slot, the mounting slot can restrict the movement of the pulley mounting bracket, so that the fixed pulley faces the liquid surface of the open channel, and ensure that the center of the movable pulley and the fixed pulley are on the same straight line.

[0032] Furthermore, a liquid level detection pool connected to the open channel is provided next to the open channel, and a liquid level sensor is installed in the liquid level detection pool.

[0033] The flowing water causes large fluctuations in the surface of the liquid in the open channel, which is not conducive to the stable detection of the liquid level by the level sensor. By using a level detection tank, the liquid level is the same as that in the open channel, and the fluctuations in the surface of the liquid in the level detection tank are small and can be ignored when detecting the liquid level, thereby improving the stable acquisition of the liquid level signal.

[0034] Beneficial effects: 1. This utility model can eliminate the interference of the support column on the water flow, improve the accuracy of the flow velocity detection results, and at the same time, the cable structure controls the lifting and lowering of the flow velocity sensor, reducing the interference on the water flow and improving the detection accuracy of the flow velocity sensor, thereby improving the efficiency of water resource management and providing accurate and important data support for drainage and early warning.

[0035] 2. The fluctuation of the liquid surface in the liquid level detection tank is small and can be ignored when detecting the liquid level, thereby improving the detection accuracy of the liquid level sensor and the accuracy of the liquid level detection results.

[0036] 3. The flow velocity detection mechanism is set above the open channel, which avoids long-term impact and corrosion of the flow velocity detection mechanism by water. This effectively reduces the waterproof requirements of the flow velocity detection mechanism, slows down the aging rate of the flow velocity detection mechanism, extends the service life of the flow velocity detection mechanism, reduces the construction and maintenance costs and difficulties of the flow velocity detection mechanism, and improves the efficiency of construction and maintenance. Attached Figure Description

[0037] Figure 1 This is a top view of the present invention;

[0038] Figure 2 for Figure 1 Cross-sectional view at point AA;

[0039] Figure 3 for Figure 1 Cross-sectional view at point BB;

[0040] Figure 4 for Figure 3 Enlarged view of point a in the middle;

[0041] Figure 5 for Figure 3 Enlarged view at point b in the middle;

[0042] Figure 6 This is a side view of the driven gear. Detailed Implementation

[0043] The specific embodiments and working principle of this utility model will be further described in detail below with reference to the accompanying drawings.

[0044] like Figure 1 , Figure 2 As shown, the pull-wire type open channel flow velocity detection device is equipped with a gantry 2 located above the open channel 1. The two support columns 21 of the gantry 2 are respectively installed on the ground on both sides of the open channel 1. The support column 21 is equipped with a telescopic support rod, which is a telescopic rod with a screw and nut structure.

[0045] like Figure 2 As shown, two support columns 21 are directly fixed with a crossbar 22. The crossbar 22 is also equipped with a movable pulley 61, a driven gear 63 and a motor 7 in the pulley mechanism 6. The movable pulley 61, the driven gear 63 and the motor 7 face the liquid surface of the open channel 1. The motor 7 is connected to the movable pulley 61 through a rotating shaft 71.

[0046] like Figure 3 , Figure 4 , Figure 6 As shown, the movable pulley 61 is coaxially mounted with a drive gear 62, and the driven gear 63 is coaxially mounted with a driven gear 63 that meshes with the drive gear 62, and a flow processor 5 is fixed on the side wall of the driven gear 63.

[0047] like Figure 2 As shown, an equipment box 4 is installed on any one of the support pillars 21.

[0048] like Figure 2 , Figure 3 As shown, the bottom of the open channel 1 is provided with an installation groove 11, and a pulley mounting bracket 9 is installed in the installation groove 11. A fixed pulley 65 of the pulley mechanism 6 is fixedly installed on the pulley mounting bracket 9. The fixed pulley 65 faces the movable pulley 61, and the center of the fixed pulley 65 and the center of the movable pulley 61 are on the same straight line.

[0049] like Figure 2 , Figure 5 As shown, a flow velocity sensor 8 is installed in the open channel 1. A mounting plate 83 is fixed on the flow velocity sensor 8. An upper mounting lug 82a and a lower mounting lug 82b are installed on one end of the mounting plate 83. A sliding rope through hole 831 is opened on the other end of the mounting plate 83.

[0050] like Figure 3 , Figure 4 , Figure 5 As shown, one end of the sliding rope 66 is connected to the upper mounting lug 82a. After the sliding rope 66 passes around the movable pulley 61, it passes through the sliding rope through hole 831, and then passes around the fixed pulley 65. The other end of the sliding rope 66 is connected to the lower mounting lug 82b.

[0051] like Figure 3 , Figure 4 , Figure 5 As shown, the signal terminal of the flow processor 5 is connected to a signal line 81, which bypasses the driven gear 63 and connects to the flow sensor 8.

[0052] The sliding rope 66 is wound in the opposite direction to the signal line 81.

[0053] like Figure 1 , Figure 2 As shown, a liquid level detection pool 3 connected to the open channel 1 is also provided next to the open channel 1, and a liquid level sensor 31 is provided in the liquid level detection pool 3.

Claims

1. A wire-type open channel flow velocity detection device, characterized in that, A flow velocity sensor (8) is installed inside the open channel (1) and a gantry (2) is installed above the open channel (1). The flow velocity sensor (8) is connected to the gantry (2) via a pulley mechanism (6). The pulley mechanism (6) includes a movable pulley (61) installed on the gantry (2) and a fixed pulley (65) installed at the bottom of the open channel (1), and the centers of the movable pulley (61) and the fixed pulley (65) are on the same straight line; The flow rate sensor (8) is connected to the movable pulley (61) and the fixed pulley (65) via a sliding rope (66); The two supports (21) of the gantry (2) are respectively installed on the ground on both sides of the open channel (1).

2. The wire-type open channel flow velocity detection device according to claim 1, characterized in that, The flow sensor (8) is fixed with a mounting plate (83), one end of which is equipped with an upper mounting lug (82a) and a lower mounting lug (82b), and the other end of which is provided with a sliding rope through hole (831). One end of the sliding rope (66) is connected to the upper mounting lug (82a). After the sliding rope (66) passes around the movable pulley (61), it passes through the sliding rope through hole (831), and then around the fixed pulley (65). The other end of the sliding rope (66) is connected to the lower mounting lug (82b).

3. The wire-type open channel flow velocity detection device according to claim 2, characterized in that, The gantry (2) is provided with a driven gear (63), which rotates synchronously with the movable pulley (61); A flow rate processor (5) is installed on the side wall of the driven gear (63). The signal end of the flow rate processor (5) is connected to a signal line (81). The signal line (81) passes around the driven gear (63) and is connected to the flow rate sensor (8).

4. The wire-type open channel flow velocity detection device according to claim 3, characterized in that, The movable pulley (61) is coaxially mounted with a driving gear (62), and the driven gear (63) is coaxially mounted with a driven gear (63). The driving gear (62) and the driven gear (63) mesh with each other.

5. The wire-type open channel flow velocity detection device according to claim 4, characterized in that, The sliding rope (66) is wound in the opposite direction to the signal line (81).

6. The wire-type open channel flow velocity detection device according to claim 3, characterized in that, The two pillars (21) of the gantry (2) are equipped with telescopic support rods, which are telescopic rods with a screw and nut structure.

7. The wire-type open channel flow velocity detection device according to claim 6, characterized in that, Two support pillars (21) are directly fixed with a crossbar (22), on which the movable pulley (61), the driven gear (63) and the motor (7) are provided. The motor (7) is connected to the movable pulley (61) through a rotating shaft (71).

8. The wire-type open channel flow velocity detection device according to claim 1, characterized in that, The bottom of the open channel (1) is provided with an installation groove (11), in which a pulley mounting bracket (9) is installed, and the fixed pulley (65) is fixedly installed on the pulley mounting bracket (9).

9. The wire-type open channel flow velocity detection device according to claim 1, characterized in that, A liquid level detection pool (3) connected to the open channel (1) is provided next to the open channel (1), and a liquid level sensor (31) is provided in the liquid level detection pool (3).

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