Gate flow measuring device and method
By designing the gate flow measurement centering mechanism and displacement sensor in the gate flow measurement device, we ensure that the flow rate sensor is always located in the middle of the flow channel in the gate, solving the problem of large deviation in water flow measurement in the prior art and achieving more accurate water flow Test.
Patent Information
- Application Number
- CN202411587800.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing Doppler gate flow measurement device only detects the water flow velocity at the bottom of the gate, and cannot accurately reflect the average water flow velocity in the gate, resulting in a large deviation in the water flow measurement.
A gate flow measurement device was designed, and the flow rate sensor is always in the middle of the flow channel in the gate through the gate flow centering mechanism. Combined with the displacement sensor to detect the upward movement distance of the gate plate, the area of the flow channel and the water flow velocity are calculated, so as to accurately measure the The water flow through the gate within unit time.
Accurate detection of the average water flow velocity in the gate is achieved, which significantly reduces the deviation of water flow measurement and improves the accuracy of measurement.
Smart Images
Figure CN119437341A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of gate flow measurement, and in particular to a gate flow measurement device and method. Background Art
[0002] At present, the gate is a control facility for closing and opening the discharge channel, which can be used to intercept the river, control the water level and regulate the flow. In order to detect the water flow passing through the gate, the Doppler gate flow measuring device in the prior art has solved the problem of measuring the water flow through the gate, but it still has the following defects: the Doppler flow velocity sensor is always at the bottom of the gate, and the water flow velocities at the upper and lower ends of the gate are different. Only detecting the water flow velocity at the bottom of the gate is not enough to reflect the average water flow velocity in the gate, and the measurement deviation of the water flow is large. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a gate flow measuring device and method. No matter how much the gate plate is opened, the flow velocity sensor in the flow measuring sensing mechanism is always located in the middle of the water flow channel in the gate with the help of the gate flow measurement centering mechanism, which is conducive to more accurate detection of the average water flow velocity in the water flow channel through the flow velocity sensor. The displacement sensor detects the upward movement distance of the gate plate. Since the gate width remains unchanged, the area of the water flow channel can be obtained after the upward movement distance of the gate plate is obtained. The water flow rate passing through the gate per unit time is obtained in combination with the water flow velocity measured by the flow velocity sensor. The detection of the water flow rate passing through the gate is more accurate, which can effectively solve the problems in the background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions: a gate flow measuring device, comprising a water gate mechanism, the water gate mechanism comprising a gate wall, a top frame, a gate lifting assembly and a gate, a gate opening is provided on the gate wall, a gate is provided in the gate opening, a top frame is installed on the top of the gate wall, and the top of the gate is connected to the top frame through the gate lifting assembly, and further comprising: The gate flow measurement centering mechanism comprises a vertical groove 1, a cover plate, an upper rod, a rope, a vertical groove 2, and a pull-down tensioning assembly. The top center of the gate plate is provided with a vertical groove 1, and the top of the gate plate is detachably installed with a cover plate, and the bottom center of the gate plate is provided with a sliding hole, and the upper rod is vertically slidably connected in the sliding hole, and the top of the upper rod extends into the vertical groove 1 and is fixedly connected with a movable pulley block, and the bottom of the cover plate is fixedly connected to one end of the rope, and the rope passes through the movable pulley block, and the other end of the movable pulley passes through the rope hole on the cover plate and is fixedly connected to the bottom of the top frame, and the bottom center of the gate on the gate wall is provided with a vertical groove 2, and the bottom of the vertical groove 2 is connected to the bottom end of the pull-down tensioning assembly, and the bottom end of the upper rod is connected to the top of the pull-down tensioning assembly through a flow rate detection installation mechanism; The flow measuring sensing mechanism is connected to the flow velocity detection installation mechanism.
[0005] The gate lifting assembly is used to drive the gate to move up and down in the gate, so as to control the water flow through the gate. After the gate moves up, there is a water flow channel between the bottom of the gate and the bottom of the gate, and the water in front of the gate wall and the gate flows backward through the water flow channel. When the gate moves up, it drives the cover plate to move up, and the cover plate pulls the rope upward, thereby driving the movable pulley block to move up. The pull-down tensioning assembly pulls the upper rod downward through the flow rate detection installation mechanism to make the rope in a straight state, imitating the state in which the movable pulley block is completely affected by gravity and makes the rope sag and straighten. Due to the characteristics of the movable pulley block, the rope is lifted up by 1 meter, and the movable pulley block is lifted up by 0.5 meters. Therefore, the upward movement distance of the movable pulley block, the upper rod, and the flow rate detection installation mechanism is always half of the upward movement distance of the gate. Therefore, the flow measurement sensing mechanism on the flow rate detection installation mechanism can always detect the water flow velocity in the middle of the water flow channel. The water flow velocity in the middle of the water flow channel is closer to the average water flow velocity than the water flow velocity at the bottom, which is more accurate for the detection of water flow through the gate.
[0006] Furthermore, the movable pulley block includes a pulley seat, a wheel axle, a movable pulley and an annular groove. The top of the upper rod is fixedly connected to the pulley seat, and the movable pulley is rotatably connected to the pulley seat through the longitudinal wheel axle. An annular groove is provided in the middle of the outer peripheral side of the movable pulley. The rope passes around the bottom of the movable pulley, and the parts of the rope located on both sides of the movable pulley are in a vertical state. The pulley seat, the wheel axle, and the movable pulley constitute the main body of the movable pulley block. The annular groove cooperates with the rope, so that the rope is always in the middle of the movable pulley, making the cooperation between the rope and the movable pulley block more stable.
[0007] Furthermore, the gate flow measurement centering mechanism also includes an anti-sway limit groove, and two vertical anti-sway limit grooves are respectively provided on the front and rear sides of the middle part of the vertical groove 1, and the front and rear ends of the wheel shaft are respectively slidably connected with the two anti-sway limit grooves. The movable pulley block may sway when moving in the vertical groove 1, affecting its normal operation, so the anti-sway limit groove is set to limit the two ends of the wheel shaft in the movable pulley block to prevent the movable pulley block from swaying in the vertical groove 1.
[0008] Furthermore, the pull-down tensioning assembly includes a lower rod and a tension spring, the bottom of the second vertical groove is fixedly connected to the bottom end of the tension spring, and the top of the tension spring is fixedly connected to the bottom end of the lower rod. When the upper rod moves upward, the flow velocity detection installation mechanism pulls the lower rod upward, and the tension spring is stretched at this time. The elastic force of the tension spring pulls the movable pulley block downward through the lower rod, the flow velocity detection installation mechanism and the upper rod, so that the rope is in a taut state, thereby preventing the friction between the upper rod and the sliding hole from affecting the natural falling of the movable pulley block.
[0009] Furthermore, the flow velocity detection installation mechanism includes an upper connecting plate, a lower connecting plate, a cylinder, a seat plate, a mounting frame and seat plate screws. The bottom end of the upper rod is fixedly connected to the upper connecting plate, the top end of the lower rod is fixedly connected to the lower connecting plate, the two ends of the upper connecting plate are fixedly connected to the two ends of the lower connecting plate through two vertical cylinders, the sides of the upper connecting plate and the lower connecting plate close to each other are fixedly connected to two seat plates, and the upper and lower ends of the mounting frame are fixedly connected to the two seat plates through seat plate screws. The upper connecting plate, the lower connecting plate and the cylinder constitute the main body of the flow velocity detection installation mechanism, the cylinder is not easy to intercept debris in the water flow, the seat plate is detachably connected to the mounting frame through the seat plate screws, and the mounting frame can be replaced, thereby facilitating the disassembly and assembly of the flow measurement sensing mechanism.
[0010] Furthermore, the flow measurement sensing mechanism includes a flow velocity sensor, a displacement sensor, a side cavity, a wire and a controller. The flow velocity sensor is installed on the front side of the mounting frame. The top side of the vertical groove is provided with a side cavity. The controller is installed in the side cavity. The displacement sensor is installed on the top of the gate. The output ends of the displacement sensor and the flow velocity sensor are electrically connected to the input end of the controller through a wire. The flow velocity sensor is installed on the mounting frame. Since the mounting frame and the flow velocity sensor are always in the middle of the water flow channel as the gate moves upward, the flow velocity sensor can more accurately obtain the average water flow velocity in the water flow channel. The displacement sensor is used to detect the upward movement distance of the gate. Since the gate width is unchanged, the area of the water flow channel can be obtained after the upward movement distance of the gate is obtained. The water flow rate passing through the gate per unit time is obtained in combination with the water flow velocity measured by the flow velocity sensor. The controller adopts a PLC controller, which can process the detection information of the flow velocity sensor and the displacement sensor, so as to obtain the water flow passing through the gate.
[0011] Furthermore, the gate flow measurement centering mechanism also includes a sealing ring and a sealing square sleeve. A sealing square groove is provided in the middle of the sliding hole, a sealing square sleeve is installed in the sealing square groove, the sealing square sleeve is slidably sleeved with the upper rod, and a sealing ring is provided in the rope hole on the cover plate, and the sealing ring is slidably sleeved with the rope. The sealing ring and the sealing square sleeve are both made of rubber material. The sealing ring is used to seal the gap between the rope hole and the rope, and the sealing square sleeve is used to seal the gap between the upper rod and the sliding hole, ensuring the sealing inside the vertical groove, and protecting the controller in the side cavity.
[0012] Furthermore, it also includes a gate plate anti-overlift mechanism, which includes a support plate, a pressure sensor, an end plate, a guide rod, a sliding sleeve, a connecting rod, a pressure plate, a buoy sleeve and a buoy. The bottom end of the front side of the gate plate is fixedly connected to the support plate, and a pressure sensor is installed on the support plate. The output end of the pressure sensor is electrically connected to the input end of the controller. An end plate is fixedly connected to the front side of the gate wall at a position corresponding to the middle of the gate mouth, and another end plate is fixedly connected to the front side of the gate wall at a position corresponding to the bottom of the gate mouth. A vertical guide rod is fixedly connected between the two end plates, and a sliding sleeve is slidably connected to the guide rod. One side of the sliding sleeve is connected to a pressure plate through a connecting rod, and the pressure plate is located directly above the pressure sensor. The other side of the sliding sleeve is fixedly connected to the buoy through a buoy sleeve. If the water level in front of the gate wall and the gate plate is low, and if the bottom of the gate plate is higher than the liquid level after it is raised, the water flow channel will not be completely filled with water. At this time, although the horizontal height of the flow velocity sensor is in the middle of the water flow channel, since there is no water flowing through the top of the water flow channel, the flow velocity sensor is not in the middle of the water flow, and the measured water flow velocity deviation increases. Therefore, a gate plate over-lift prevention mechanism is set to place the bottom of the gate plate above the liquid level. The guide rod limits the sliding sleeve, so that the sliding sleeve, the float and the pressure plate can only slide up and down along the guide rod. Due to the presence of the float, the buoyancy of the float allows the sliding sleeve to , connecting rod and pressure plate are always on the water surface. When the gate moves up, the bottom gradually approaches the water surface. When the pressure sensor on the support plate approaches the water surface, the top of the pressure sensor approaches the pressure plate. If the gate continues to move up, the pressure plate presses on the pressure sensor. At this time, the float gradually leaves the water surface and no longer provides buoyancy. The pressure of the sliding sleeve, connecting rod and pressure plate is applied to the pressure sensor. After the pressure sensor detects pressure, it can stop the gate from moving up to prevent the bottom of the gate from leaving the water surface, ensuring that the horizontal height of the flow sensor is always in the middle of the water flow, avoiding large deviations in the measured water flow velocity.
[0013] Furthermore, it also includes a flow measurement and anti-interference mechanism, which includes a dovetail slide rail, an arc filter, and a bottom filter. The front side of the gate wall is located on both sides of the gate and is fixedly connected to two dovetail slide rails. The two dovetail slide rails are respectively connected to the left and right ends of the arc filter through a disassembly component, and the bottom of the arc filter is connected to the bottom of the arc filter. If there are too many debris in the water flow, it will affect the flow sensor's detection of the water flow velocity. Therefore, an arc filter and a bottom filter are set to intercept the debris in the water. The disassembly component facilitates the rapid disassembly and assembly of the arc filter and the bottom filter. The arc filter is in the shape of an arc and has a large contact area with the water flow, which prevents the plane filter from being quickly blocked. After the arc filter and the bottom filter are blocked after long-term use, they can be removed and cleaned with the help of the disassembly component.
[0014] A flow measurement method for a gate flow measurement device, comprising the following steps: Step 1: The gate lifting assembly drives the gate to descend to the bottom in the gate, and the arc filter and bottom filter in the flow measurement and anti-interference mechanism are installed between the two dovetail slide rails through the disassembly assembly; Step 2: Pull down the tensioning assembly to pull the movable pulley block downward to keep the rope in a taut state. When the gate is opened, the gate lifting assembly drives the gate to move upward, and the part under the gate in the gate forms a water flow channel; Step 3: When the gate plate moves upward, the end of the rope is pulled upward by the cover plate, and the movable pulley group moves upward with the pulling of the rope. The upward movement distance of the movable pulley group is half of the upward movement distance of the gate plate and the cover plate, so that the flow velocity sensor on the flow velocity detection installation mechanism is always in the middle of the water flow in the water flow channel, so that the flow velocity sensor can accurately measure the water flow velocity in the middle of the water flow channel; Step 4: The displacement sensor detects the upward movement distance of the gate. Since the width of the gate remains unchanged, the upward movement distance of the gate can be used to determine the area of the water flow channel. Combined with the water flow velocity measured by the flow velocity sensor, the water flow rate passing through the gate per unit time can be obtained.
[0015] Compared with the prior art, the gate flow measurement device and method have the following beneficial effects: 1. Regardless of the gate opening, the flow sensor in the flow measurement sensing mechanism is always in the middle of the water channel in the gate with the help of the gate flow measurement centering mechanism, which is conducive to more accurate detection of the average water flow velocity in the water channel through the flow sensor. The displacement sensor detects the upward movement distance of the gate. Since the gate width remains unchanged, the upward movement distance of the gate can be obtained to obtain the area of the water channel. The water flow rate passing through the gate per unit time can be obtained by combining with the water flow velocity measured by the flow sensor, which is more accurate for the detection of the water flow passing through the gate.
[0016] 2. The buoyancy of the float keeps the sliding sleeve, connecting rod and pressure plate always on the water surface. As the gate moves up, the bottom gradually approaches the water surface. When the pressure sensor on the support plate approaches the water surface, the top of the pressure sensor approaches the pressure plate. If the gate continues to move up, the pressure plate presses on the pressure sensor. At this time, the float gradually leaves the water surface and no longer provides buoyancy. The pressure of the sliding sleeve, connecting rod and pressure plate is applied to the pressure sensor. After the pressure sensor detects pressure, it can stop the gate from moving up to prevent the bottom of the gate from leaving the water surface, ensuring that the horizontal height of the flow sensor is always in the middle of the water flow, and avoiding large deviations in the measured water flow velocity.
[0017] 3. Set up arc filter and bottom filter to intercept debris in the water. The disassembly assembly facilitates the quick disassembly and assembly of the arc filter and the bottom filter. The arc filter has a large contact area with the water flow due to its arc shape, which prevents the flat filter from being quickly blocked. When the arc filter and the bottom filter are blocked after long-term use, they can be removed and cleaned with the help of the disassembly assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the gate flow measuring device of the present invention; Figure 2 It is a schematic diagram of the rear structure of the gate flow measuring device of the present invention; Figure 3 This is a schematic diagram of the structure of the gate flow measuring device of the present invention after removing the flow measuring anti-interference mechanism; Figure 4 It is a schematic diagram of the rear side structure of the flow measurement anti-interference mechanism of the gate flow measurement device of the present invention; Figure 5 The local structure of the gate flow measuring device of the present invention is shown in FIG. Figure 1 ; Figure 6 The gate flow measuring device of the present invention Figure 5 An enlarged structural diagram of the middle gate plate over-lift prevention mechanism; Figure 7 The local structure of the gate flow measuring device of the present invention is shown in FIG. Figure 2 ; Figure 8 It is a schematic diagram of the cross-sectional structure of the gate flow measuring device of the present invention; Fig. 9 The gate flow measuring device of the present invention Figure 8 A schematic diagram of the partially enlarged structure at center A; Fig.10 The gate flow measuring device of the present invention Figure 8 A schematic diagram of the partially enlarged structure at B in the middle; In the figure: 1 sluice mechanism, 11 gate wall, 12 bottom groove, 13 side limit groove, 14 top frame, 15 top frame bolt, 16 convex plate, 17 guide column, 18 lead screw, 19 control board, 110 lead screw nut, 111 reduction motor, 112 gate plate, 2 gate flow measurement centering mechanism, 21 vertical groove 1, 22 cover plate, 23 cover plate screw, 24 upper rod, 25 pulley seat, 26 wheel axle, 27 movable pulley, 28 annular groove, 29 rope, 210 rope rack, 211 anti-sway limit groove, 212 sealing ring, 213 vertical groove 2, 214 lower rod, 215 tension spring, 216 sealing square sleeve, 3 Flow rate detection installation mechanism, 31 upper connecting plate, 32 lower connecting plate, 33 cylinder, 34 seat plate, 35 mounting frame, 36 seat plate screws, 4 flow measurement sensing mechanism, 41 flow rate sensor, 42 displacement sensor, 43 side cavity, 44 wire, 45 controller, 5 gate plate anti-overlift mechanism, 51 support plate, 52 pressure sensor, 53 end plate, 54 guide rod, 55 sliding sleeve, 56 connecting rod, 57 pressure plate, 58 float sleeve, 59 float, 6 flow measurement anti-interference mechanism, 61 dovetail slide rail, 62 cross bar, 63 arc filter, 64 bottom filter, 65 dovetail slide bar, 66 lifting rod, 67 arc support frame. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] For example, see Figures 1 to 10 The present embodiment provides a technical solution: a gate flow measuring device, comprising a sluice mechanism 1, the sluice mechanism 1 comprising a sluice wall 11, a top frame 14, a gate lifting assembly and a gate 112, a gate opening is provided on the sluice wall 11, a gate 112 is provided in the gate opening, a top frame 14 is installed on the top of the sluice wall 11, and the top of the gate 112 is connected to the top frame 14 through the gate lifting assembly; The sluice mechanism 1 also includes a bottom groove 12, side limit grooves 13 and top frame bolts 15. Side limit grooves 13 are respectively provided on the left and right sides of the gate, and the two sides of the gate plate 112 are respectively vertically slidably connected with the two side limit grooves 13. A bottom groove 12 is provided at the bottom of the gate, and the bottom of the bottom groove 12 cooperates with the bottom of the gate plate 112 to avoid water leakage between the gate and the gate plate 112 when the gate plate 112 drops to the bottom. In order to improve the sealing between the gate and the gate plate 112, sealing gaskets of suitable materials can be arranged on both sides and the bottom of the gate plate 112. The two ends of the top frame 14 are detachably mounted on the top of the gate wall 11 through two top frame bolts 15.
[0021] The gate lifting assembly includes a convex plate 16, a guide column 17, a lead screw 18, a control panel 19, a lead screw nut 110, and a reduction motor 111. The rear side of the top frame 14 is integrally formed with the convex plate 16, and the bottoms of both ends of the convex plate 16 are respectively fixedly connected to the tops of the two guide columns 17. The top rear side of the gate 112 is fixedly connected to the control panel 19, and the two guide columns 17 are respectively vertically slidably connected to the two guide holes on the control panel 19. The middle part of the convex plate 16 is fixedly connected to the reduction motor 111, and the output shaft at the bottom of the reduction motor 111 is fixedly connected to the top of the lead screw 18. The middle part of the control panel 19 is inlaid with a lead screw nut 110, and the lead screw nut 110 is matched with the lead screw 18. The reduction motor 111 drives the lead screw 18 to rotate clockwise, and the threaded action of the lead screw 18 and the lead screw nut 110 drives the control plate 19 and the gate plate 112 to move upward along the guide column 17. The reduction motor 111 drives the lead screw 18 to rotate counterclockwise, and the threaded action of the lead screw 18 and the lead screw nut 110 drives the control plate 19 and the gate plate 112 to move downward along the guide column 17.
[0022] It also includes a gate flow measurement centering mechanism 2, a flow velocity detection installation mechanism 3 and a flow measurement sensing mechanism 4; The gate flow measurement centering mechanism 2 includes a vertical groove 11, a cover plate 22, an upper rod 24, a rope 29, a vertical groove 213, and a pull-down tensioning component. The top center of the gate plate 112 is provided with a vertical groove 113, and the top of the gate plate 112 is detachably installed with a cover plate 22, which closes the top of the vertical groove 113. The bottom center of the gate plate 112 is provided with a sliding hole, and the upper rod 24 is vertically slidably connected in the sliding hole. The top of the upper rod 24 extends to the vertical groove 113. 21 and fixedly connected with a movable pulley block, the bottom of the cover plate 22 is fixedly connected with one end of a rope 29, the rope 29 passes through the movable pulley block, the other end of the movable pulley 27 passes through the rope hole on the cover plate 22 and is fixedly connected to the bottom of the top frame 14, a vertical groove 213 is opened at the bottom center of the gate on the gate wall 11, the bottom of the vertical groove 213 is connected to the bottom end of the pull-down tensioning assembly, and the bottom end of the upper rod 24 is connected to the top end of the pull-down tensioning assembly through the flow rate detection installation mechanism 3; The gate flow measurement centering mechanism 2 further includes a cover screw 23 , and both ends of the cover 22 are connected to the top of the gate plate 112 through the cover screws 23 .
[0023] The gate flow measurement centering mechanism 2 also includes a rope rack 210 , the bottom of the top frame 14 is fixedly connected to the rope rack 210 , and one end of the rope 29 located outside the vertical groove 21 is connected to the rope rack 210 .
[0024] The movable pulley block includes a pulley seat 25, a wheel axle 26, a movable pulley 27 and an annular groove 28. The top of the upper rod 24 is fixedly connected with the pulley seat 25. The movable pulley 27 is rotatably connected to the pulley seat 25 through the longitudinal wheel axle 26. An annular groove 28 is provided in the middle of the outer peripheral side of the movable pulley 27. The rope 29 passes around the bottom of the movable pulley 27. The parts of the rope 29 on both sides of the movable pulley 27 are in a vertical state. The pulley seat 25, the wheel axle 26, and the movable pulley 27 constitute the main body of the movable pulley block. The annular groove 28 cooperates with the rope 29, so that the rope 29 is always in the middle of the movable pulley 27, making the cooperation between the rope 29 and the movable pulley block more stable.
[0025] The gate flow measurement centering mechanism 2 also includes an anti-sway limit groove 211. Two vertical anti-sway limit grooves 211 are respectively provided at the front and rear sides of the middle part of the vertical groove 21. The front and rear ends of the axle 26 are respectively slidably connected with the two anti-sway limit grooves 211. The movable pulley block may sway when moving in the vertical groove 21, affecting its normal operation. Therefore, the anti-sway limit grooves 211 are provided to limit the two ends of the axle 26 in the movable pulley block to prevent the movable pulley block from swaying in the vertical groove 21.
[0026] The pull-down tensioning assembly includes a lower rod 214 and a tension spring 215. The bottom of the second vertical groove 213 is fixedly connected to the bottom end of the tension spring 215, and the top end of the tension spring 215 is fixedly connected to the bottom end of the lower rod 214. When the upper rod 24 moves upward, the lower rod 214 is pulled upward by the flow velocity detection installation mechanism 3. At this time, the tension spring 215 is stretched. The elastic force of the tension spring 215 pulls the movable pulley block downward through the lower rod 214, the flow velocity detection installation mechanism 3 and the upper rod 24, so that the rope 29 is in a taut state, thereby preventing the friction between the upper rod 24 and the sliding hole from affecting the natural falling of the movable pulley block.
[0027] The flow measuring sensing mechanism 4 is connected to the flow velocity detection installation mechanism 3 .
[0028] The flow velocity detection installation mechanism 3 includes an upper connecting plate 31, a lower connecting plate 32, a cylinder 33, a seat plate 34, a mounting frame 35 and a seat plate screw 36. The bottom end of the upper rod 24 is fixedly connected with the upper connecting plate 31, and the top end of the lower rod 214 is fixedly connected with the lower connecting plate 32. The two ends of the upper connecting plate 31 are fixedly connected to the two ends of the lower connecting plate 32 through two vertical cylinders 33. The sides of the upper connecting plate 31 and the lower connecting plate 32 close to each other are fixedly connected to two seat plates 34. The upper and lower ends of the mounting frame 35 are fixedly connected to the two seat plates 34 through seat plate screws 36. The upper connecting plate 31, the lower connecting plate 32 and the cylinder 33 constitute the main body of the flow velocity detection installation mechanism 3. The cylinder 33 is not easy to intercept debris in the water flow. The seat plate 34 is detachably connected to the mounting frame 35 through the seat plate screws 36, and the mounting frame 35 can be replaced, so as to facilitate the disassembly and assembly of the flow measurement sensing mechanism 4.
[0029] The flow measuring sensing mechanism 4 includes a flow velocity sensor 41, a displacement sensor 42, a side cavity 43, a wire 44 and a controller 45. The flow velocity sensor 41 is installed on the front side of the mounting frame 35. The side cavity 43 is provided on the top side of the vertical groove 21. The controller 45 is installed in the side cavity 43. The displacement sensor 42 is installed on the top of the gate plate 112. The output ends of the displacement sensor 42 and the flow velocity sensor 41 are electrically connected to the input end of the controller 45 through the wire 44. The output end of the controller 45 is electrically connected to the input end of the reduction motor 111. The flow rate sensor 41 is installed on the mounting frame 35. Since the mounting frame 35 and the flow rate sensor 41 are always in the middle of the water flow channel as the gate plate 112 moves upward, the flow rate sensor 41 can more accurately obtain the average water flow velocity in the water flow channel. The displacement sensor 42 is used to detect the upward movement distance of the gate plate 112. Since the gate width remains unchanged, the area of the water flow channel can be obtained after obtaining the upward movement distance of the gate plate 112. The water flow velocity measured by the flow rate sensor 41 can be used to obtain the water flow rate passing through the gate per unit time. The controller 45 adopts a PLC controller, which can process the detection information of the flow rate sensor 41 and the displacement sensor 42, thereby obtaining the water flow rate passing through the gate.
[0030] The gate flow measurement centering mechanism 2 also includes a sealing ring 212 and a sealing square sleeve 216. A sealing square groove is provided in the middle of the slide hole, and a sealing square sleeve 216 is installed in the sealing square groove. The sealing square sleeve 216 is slidably sleeved with the upper rod 24. A sealing ring 212 is provided in the rope hole on the cover plate 22, and the sealing ring 212 is slidably sleeved with the rope 29. The sealing ring 212 and the sealing square sleeve 216 are both made of rubber. The sealing ring 212 is used to seal the gap between the rope hole and the rope 29, and the sealing square sleeve 216 is used to seal the gap between the upper rod 24 and the slide hole, ensuring the sealing in the vertical groove 21, and protecting the controller 45 in the side cavity 43.
[0031] When in use, the gate lifting assembly is used to drive the gate 112 to move up and down in the gate, so as to control the water flow through the gate. After the gate 112 moves up, there is a water flow channel between the bottom of the gate 112 and the bottom of the gate, and the water in front of the gate wall 11 and the gate 112 flows backward through the water flow channel. When the gate 112 moves up, it drives the cover plate 22 to move up, and the cover plate 22 pulls the rope 29 upward, thereby driving the movable pulley group to move up. The pull-down tensioning assembly pulls the upper rod 24 downward through the flow rate detection installation mechanism 3, so that the rope 29 is in a straight state, simulating that the movable pulley group is fully stressed. Due to the influence of gravity, the rope 29 is in a drooping and straightened state. Due to the characteristics of the movable pulley group, when the rope 29 is lifted upward by 1 meter, the movable pulley group is lifted upward by 0.5 meter. Therefore, the upward movement distance of the movable pulley group, the upper rod 24, and the flow velocity detection installation mechanism 3 is always half of the upward movement distance of the gate plate 112. Therefore, the flow measuring sensor mechanism 4 on the flow velocity detection installation mechanism 3 can always detect the water flow velocity in the middle of the water flow channel. The water flow velocity in the middle of the water flow channel is closer to the average water flow velocity than the water flow velocity at the bottom, and the detection of the water flow through the gate is more accurate.
[0032] For example 2, please refer to Figures 1 to 10 This embodiment provides a technical solution: a gate flow measuring device. The structure of this embodiment is roughly the same as that of the first embodiment, except that: It also includes a gate plate anti-overlift mechanism 5, which includes a support plate 51, a pressure sensor 52, an end plate 53, a guide rod 54, a sliding sleeve 55, a connecting rod 56, a pressure plate 57, a float sleeve 58 and a float 59. The front bottom end of the gate plate 112 is fixedly connected to the support plate 51, and the pressure sensor 52 is installed on the support plate 51. The output end of the pressure sensor 52 is electrically connected to the input end of the controller 45. An end plate 53 is fixedly connected to the front side of the gate wall 11 corresponding to the middle of the gate port, and another end plate 53 is fixedly connected to the front side of the gate wall 11 corresponding to the bottom of the gate port. A vertical guide rod 54 is fixedly connected between the two end plates 53, and a sliding sleeve 55 is slidably connected to the guide rod 54. One side of the sliding sleeve 55 is connected to a pressure plate 57 through a connecting rod 56. The pressure plate 57 is located directly above the pressure sensor 52, and the other side of the sliding sleeve 55 is fixedly connected to a float 59 through a float sleeve 58. If the water level in front of the gate wall 11 and the gate plate 112 is low, and if the bottom of the gate plate 112 is higher than the liquid level after it is raised, the water flow channel will not be completely filled with water. At this time, although the horizontal height of the flow velocity sensor 41 is in the middle of the water flow channel, since there is no water flowing through the top of the water flow channel, the flow velocity sensor 41 is not in the middle of the water flow, and the measured water flow velocity deviation increases. Therefore, a gate plate over-lifting prevention mechanism 5 is provided to place the bottom of the gate plate 112 above the liquid level, and the guide rod 54 limits the sliding sleeve 55, so that the sliding sleeve 55, the float 59 and the pressure plate 57 can only slide up and down along the guide rod 54. Due to the existence of the float 59, the buoyancy of the float 59 allows the sliding sleeve 55, the connecting rod 59 and the pressure plate 57 to slide up and down only. 6. The pressure plate 57 is always on the water surface. During the upward movement of the gate plate 112, the bottom gradually approaches the water surface. When the pressure sensor 52 on the support plate 51 approaches the water surface, the top of the pressure sensor 52 approaches the pressure plate 57. If the gate plate 112 continues to move upward, the pressure plate 57 presses on the pressure sensor 52. At this time, the float 59 gradually leaves the water surface and no longer provides buoyancy. The pressure of the sliding sleeve 55, the connecting rod 56, and the pressure plate 57 is applied to the pressure sensor 52. After the pressure sensor 52 detects the pressure, it can stop the gate plate 112 from moving upward to prevent the bottom of the gate plate 112 from leaving the water surface, ensure that the horizontal height of the flow sensor 41 is always in the middle of the water flow, and avoid large deviations in the measured water flow velocity.
[0033] For example 3, please refer to Figures 1 to 10 This embodiment provides a technical solution: a gate flow measuring device. The structure of this embodiment is roughly the same as that of the second embodiment, except that: It also includes a flow measuring and anti-interference mechanism 6, which includes a dovetail slide rail 61, an arc filter screen 63, and a bottom filter screen 64. The front side of the gate wall 11 is located on both sides of the gate and is fixedly connected to two dovetail slide rails 61. The two dovetail slide rails 61 are respectively connected to the left and right ends of the arc filter screen 63 through disassembly components, and the bottom of the arc filter screen 63 is connected to the bottom of the bottom filter screen 64.
[0034] The flow measurement and anti-interference mechanism 6 includes a crossbar 62, and the bottom ends of the two dovetail slide rails 61 are respectively fixedly connected to the two ends of the crossbar 62; The disassembly assembly includes a dovetail slide 65, a lifting rod 66, and an arc support frame 67. The left and right ends of the arc filter 63 are respectively fixedly connected to the two dovetail slides 65, and the two dovetail slides 65 are respectively movably connected to the two dovetail slide rails 61. The two dovetail slides 65 are connected by three equally distributed arc support frames 67, and the arc support frames 67 are located on the inner side of the arc filter 63. The tops of the two dovetail slides 65 are fixedly connected to the two ends of the lifting rod 66. The dovetail slide 65 and the arc support frame 67 constitute an arc bracket to prevent the arc filter 63 from being deformed by the impact of water flow. The lifting rod 66 facilitates the lifting of the arc bracket, the arc filter 63 and the bottom filter 64, so that the dovetail slide 65 can be separated from the dovetail slide rail 61, and the arc filter 63 and the bottom filter 64 can be removed. The cross bar 62 limits the bottom of the bottom filter 64.
[0035] If there are too many debris in the water flow, it will affect the detection of the water flow velocity by the flow velocity sensor 41. Therefore, the arc filter 63 and the bottom filter 64 are set to intercept the debris in the water. The disassembly component facilitates the rapid disassembly and assembly of the arc filter 63 and the bottom filter 64. Since the arc filter 63 is arc-shaped, the contact area with the water flow is large, which prevents the flat filter from being quickly blocked. After the arc filter 63 and the bottom filter 64 are blocked after long-term use, they can be removed and cleaned with the help of the disassembly component.
[0036] See also Figures 1 to 10 , a flow measurement method of a gate flow measurement device, comprising the following steps: The gate lifting assembly drives the gate 112 to descend to the bottom in the gate, and the arc filter 63 and the bottom filter 64 in the flow measurement and anti-interference mechanism 6 are installed between the two dovetail slide rails 61 through the disassembly assembly; The pull-down tensioning assembly pulls the movable pulley assembly downward to keep the rope 29 in a tensioned state. When the gate is opened, the gate lifting assembly drives the gate 112 to move upward, and the part of the gate located under the gate 112 forms a water flow channel; When the gate plate 112 moves upward, the end of the rope 29 is pulled upward by the cover plate 22, and the movable pulley group moves upward with the pulling of the rope 29. The upward movement distance of the movable pulley group is half of the upward movement distance of the gate plate 112 and the cover plate 22, so that the flow velocity sensor 41 on the flow velocity detection installation mechanism 3 is always in the middle of the water flow in the water flow channel, so that the flow velocity sensor 41 can accurately measure the water flow velocity in the middle of the water flow channel; The displacement sensor 42 detects the upward movement distance of the gate plate 112. Since the gate width remains unchanged, the upward movement distance of the gate plate 112 can be used to determine the area of the water flow channel. Combined with the water flow velocity measured by the flow velocity sensor 41, the water flow rate passing through the gate per unit time can be obtained.
[0037] It is worth noting that the connection method between the controller 45 and the flow rate sensor 41, the displacement sensor 42, and the pressure sensor 52 disclosed in the above embodiments adopts the existing technology, and the controller 45 controls the operation of the reduction motor 111 using the method commonly used in the existing technology.
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A gate flow measuring device, comprising a sluice mechanism (1), the sluice mechanism (1) comprising a sluice wall (11) and a sluice plate (112), a sluice opening being provided on the sluice wall (11), a sluice plate (112) being provided in the sluice opening, a top frame (14) being installed on the top of the sluice wall (11), the top of the sluice plate (112) being connected to the top frame (14) via a sluice plate lifting assembly, characterized in that: Also includes: The gate flow measurement centering mechanism (2) comprises a rope (29) and a pull-down tensioning assembly, wherein a vertical groove (21) is provided at the top center of the gate plate (112), a cover plate (22) is detachably mounted at the top of the gate plate (112), a sliding hole is provided at the bottom center of the gate plate (112), an upper rod (24) is vertically slidably connected in the sliding hole, the top of the upper rod (24) extends into the vertical groove (21) and is fixedly connected to a movable pulley block, and the cover plate (22) The bottom of the gate is fixedly connected to one end of a rope (29), the rope (29) passes through a movable pulley block, the other end of the movable pulley (27) passes through a rope hole on the cover plate (22) and is fixedly connected to the bottom of the top frame (14), a second vertical groove (213) is opened at the center of the bottom of the gate on the gate wall (11), the bottom of the second vertical groove (213) is connected to the bottom end of the pull-down tensioning assembly, and the bottom end of the upper rod (24) is connected to the top end of the pull-down tensioning assembly through a flow rate detection installation mechanism (3); The flow measuring sensing mechanism (4) is connected to the flow velocity detecting installation mechanism (3).
2. The gate flow measuring device according to claim 1, characterized in that: The movable pulley assembly comprises a pulley seat (25), a wheel axle (26), a movable pulley (27) and an annular groove (28); the top of the upper rod (24) is fixedly connected to the pulley seat (25); the movable pulley (27) is rotatably connected to the pulley seat (25) via the longitudinal wheel axle (26); an annular groove (28) is provided in the middle of the outer peripheral side of the movable pulley (27); a rope (29) passes around the bottom of the movable pulley (27); and parts of the rope (29) located on both sides of the movable pulley (27) are in a vertical state.
3. The gate flow measuring device according to claim 2, characterized in that: The gate flow measurement centering mechanism (2) further comprises an anti-sway limit groove (211), two vertical anti-sway limit grooves (211) are respectively provided on the front and rear sides of the middle part of the vertical groove one (21), and the front and rear ends of the wheel shaft (26) are respectively slidably connected to the two anti-sway limit grooves (211).
4. The gate flow measuring device according to claim 1, characterized in that: The pull-down tensioning assembly comprises a lower rod (214) and a tension spring (215); the bottom of the second vertical groove (213) is fixedly connected to the bottom end of the tension spring (215); and the top end of the tension spring (215) is fixedly connected to the bottom end of the lower rod (214).
5. The gate flow measuring device according to claim 4, characterized in that: The flow rate detection installation mechanism (3) comprises an upper connecting plate (31), a lower connecting plate (32), a cylinder (33) and a mounting frame (35); the bottom end of the upper rod (24) is fixedly connected to the upper connecting plate (31); the top end of the lower rod (214) is fixedly connected to the lower connecting plate (32); the two ends of the upper connecting plate (31) are fixedly connected to the two ends of the lower connecting plate (32) via two vertical cylinders (33); the sides of the upper connecting plate (31) and the lower connecting plate (32) close to each other are fixedly connected to two seat plates (34); the upper and lower ends of the mounting frame (35) are fixedly connected to the two seat plates (34) via seat plate screws (36).
6. The gate flow measuring device according to claim 5, characterized in that: The flow measuring sensing mechanism (4) comprises a flow velocity sensor (41), a displacement sensor (42) and a controller (45); the flow velocity sensor (41) is mounted on the front side of the mounting frame (35); a side cavity (43) is provided on the top side of the vertical groove 1 (21); the controller (45) is installed in the side cavity (43); and the displacement sensor (42) is installed on the top of the gate plate (112).
7. The gate flow measuring device according to claim 1, characterized in that: The gate flow measurement centering mechanism (2) further comprises a sealing ring (212) and a sealing square sleeve (216); a sealing square groove is provided in the middle of the sliding hole; a sealing square sleeve (216) is installed in the sealing square groove; the sealing square sleeve (216) is slidably sleeved with the upper rod (24); a sealing ring (212) is provided in the rope hole on the cover plate (22); the sealing ring (212) is slidably sleeved with the rope (29).
8. The gate flow measuring device according to claim 1, characterized in that: The invention also comprises a gate plate over-lift prevention mechanism (5), wherein the gate plate over-lift prevention mechanism (5) comprises a pressure sensor (52), a pressure plate (57) and a float (59), wherein the front bottom end of the gate plate (112) is fixedly connected to a support plate (51), and the pressure sensor (52) is mounted on the support plate (51), an end plate (53) is fixedly connected to a position corresponding to the middle of the gate opening on the front side of the gate wall (11), and another end plate (53) is fixedly connected to a position corresponding to the bottom of the gate opening on the front side of the gate wall (11), a vertical guide rod (54) is fixedly connected between the two end plates (53), a sliding sleeve (55) is slidably connected to the guide rod (54), one side of the sliding sleeve (55) is connected to a pressure plate (57) via a connecting rod (56), and the pressure plate (57) is located directly above the pressure sensor (52), and the other side of the sliding sleeve (55) is fixedly connected to a float (59) via a float sleeve (58).
9. The gate flow measuring device according to claim 1, characterized in that: The device also comprises a flow measurement and anti-interference mechanism (6), wherein the flow measurement and anti-interference mechanism (6) comprises a dovetail slide rail (61), a circular arc filter screen (63), and a bottom filter screen (64); the front side of the gate wall (11) is located on both sides of the gate and is fixedly connected to two dovetail slide rails (61), the two dovetail slide rails (61) are respectively connected to the left and right ends of the circular arc filter screen (63) through a disassembly component, and the bottom of the circular arc filter screen (63) is connected to the bottom of the bottom filter screen (64).
10. A flow measurement method for a gate flow measurement device, applied to the gate flow measurement device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The gate lifting assembly drives the gate (112) to descend to the bottom in the gate, and the arc filter (63) and the bottom filter (64) in the flow measurement and anti-interference mechanism (6) are installed between the two dovetail slide rails (61) through the disassembly assembly; Step 2: Pull down the tensioning assembly to pull the movable pulley assembly downward, so that the rope (29) is always in a tensioned state. When the gate is opened, the gate lifting assembly drives the gate (112) to move upward, and the part of the gate located below the gate (112) forms a water flow channel; Step 3: When the gate plate (112) moves upward, the end of the rope (29) is pulled upward by the cover plate (22), and the movable pulley group moves upward along with the pulling of the rope (29). The upward movement distance of the movable pulley group is half of the upward movement distance of the gate plate (112) and the cover plate (22), so that the flow velocity sensor (41) on the flow velocity detection installation mechanism (3) is always located in the middle of the water flow in the water flow channel, so that the flow velocity sensor (41) can accurately measure the water flow velocity in the middle of the water flow channel; Step 4: The displacement sensor (42) detects the upward movement distance of the gate plate (112). Since the gate width remains unchanged, the upward movement distance of the gate plate (112) can be used to determine the area of the water flow channel. The water flow rate measured by the flow rate sensor (41) can be used to determine the water flow rate passing through the gate per unit time.