Flat-bottom short-throat measurement and control integrated groove gate

Abstract

The utility model relates to the technical field of measuring flutes, and discloses a flat-bottom short-throat measurement and control integrated groove gate which comprises a measuring flute and a gate body installed in the measuring flute, the gate body is further connected with a hoist, a control system and a power supply system, and the control system is composed of a power supply unit, a gate body, a power unit, a protection unit, a control unit, a flow measurement unit and a video unit. The brake body, the control unit and the power supply unit are independently designed and are connected with one another through data lines. According to the flat-bottom short-throat measurement and control integrated groove gate, flow is accurately measured at the moment of full opening of the gate, free outflow is achieved when flow flows out of a gate hole under the designed flow condition, the flow measurement error is smaller than 5%, the precision is greatly improved compared with a same type of measuring flume, meanwhile, the equipment is high in automation and intelligence degree, the water level is measured through a radar water level gauge, and the measurement accuracy is high. The opening degree of the gate is metered by a gate level meter, the flow can be set according to user requirements, and an internal control terminal is synchronized to monitor the water level and the gate level in real time to calculate the flow.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water measuring tank, in particular to a flat-bottomed short-throat measurement and control integrated tank gate. BACKGROUND

[0002] At present, there are many studies on water measuring tanks, but most of them are for measuring flow on the ditch or agricultural canal. There are few studies on water measuring devices for the scene of water inlet at the water distribution or irrigation area. The currently developed water measuring tank products are mostly Parshall tanks, which have fixed size and are limited by the type, size and bottom slope of the canal. The supporting rate is low, and the versatility is not strong.

[0003] At the same time, the installation of the Parshall tank requires a running river channel with a length of not less than five times the width of the channel in front of the tank to make the water flow smoothly into the tank body. The equipment installation occupies a large area. Due to the large number and wide range of water inlets at the water distribution or irrigation area, the water measuring device should have the characteristics of simple structure, meeting certain measurement accuracy, economic rationality, stability and reliability, small land occupation, and small water head loss through the tank. SUMMARY

[0004] Technical problems to be solved:

[0005] In view of the shortcomings of the prior art, the present application provides a flat-bottomed short-throat measurement and control integrated tank gate, which has the advantages of accurate flow measurement, reliable control opening and closing, controllable cost, compliance with domestic and foreign control device protocols, and fast adaptation to the information platform of the irrigation area, etc. The above technical problems are solved.

[0006] Technical scheme:

[0007] To achieve the above purpose, the present application provides the following technical scheme: a flat-bottomed short-throat measurement and control integrated tank gate, comprising a water measuring tank and a gate body installed in the water measuring tank, the water measuring tank is composed of a contraction section, a throat and a diffusion section;

[0008] The gate body is also connected to an opening and closing machine, a control system and a power supply system, the gate body, the opening and closing machine, the control system and the power supply system together constitute a gate;

[0009] The control system is composed of a power supply unit, a gate body, a power unit, a protection unit, a control unit, a flow measurement unit and a video unit, the gate body, the control unit and the power supply unit are independently designed and connected to each other through data lines;

[0010] The power supply unit is used to provide stable power supply for the whole gate system, including a solar power supply system, a storage battery and a power management module, to ensure long-term stable operation of the system in the field environment;

[0011] The gate body is the main structure of the gate, which bears water pressure and load;

[0012] The power unit is used for providing power for opening and closing the gate;

[0013] The protection unit is used for protecting the gate system from external environmental factors, including waterproof, dustproof, and corrosion-resistant measures, to ensure reliable operation of the system in harsh environments.

[0014] The control unit is used for intelligent control of the gate, including a remote control terminal, sensors, and a gate position meter, responsible for receiving remote instructions, monitoring the gate status, and controlling the opening of the gate board. An absolute value encoder is used for gate board position detection, with power-off memory function. The wireless communication module is connected to the remote control center to realize real-time data transmission and remote control.

[0015] The flow measurement unit is used for measuring the flow through the gate, through water level information collection before and after the gate and flow calculation software, combined with sensor data, to calculate the flow through the gate.

[0016] The video unit is used for real-time monitoring of the gate site, including a camera, a video capture card, and a video transmission module, responsible for collecting on-site gate status, flow data, and video images, and uploading them to the remote control center. The camera uses a high-definition, wide-dynamic-range industrial-grade camera that supports night infrared light compensation to ensure clear imaging in light conditions. Video transmission uses 4G / 5G wireless communication technology to realize real-time data transmission.

[0017] The gate hoist also includes a manual opening and closing, a reduction motor, and a coupling.

[0018] Preferably, the water measuring tank and the gate body installed in the water measuring tank are made of aviation aluminum alloy material with surface hard anode treatment.

[0019] Through the above technical solution, through surface hard anode treatment, high strength, good weather resistance, long service life, up to 40 years; transmission components are made of high-quality structural steel with chrome plating treatment, wear-resistant and corrosion-resistant.

[0020] Preferably, the reduction motor is a turbine worm type reducer with reverse self-locking function, and the reduction motor uses encoder counting, travel switch limiting, and safety switch power-off control.

[0021] Through the above technical solution, by using a turbine worm type reducer, with reverse self-locking function, encoder counting, travel switch limiting, and safety switch power-off control, the measurement accuracy is higher than 95%, and the operation system is safe and reliable.

[0022] Preferably, the gate body is composed of a vertical column, a bottom sill, a cross beam, a gate board, a screw rod, and a water sealing.

[0023] Through the technical scheme, the water sealing uses the silicon rubber sealing, has strong weather resistance, and has anti-aging for 30 years; the sliding rail uses the high wear resistance lining, has small friction, and has high wear resistance.

[0024] Preferably, the opening and closing machine further comprises a manual opening and closing, a reduction motor and a shaft coupling.

[0025] The control system is composed of an operation panel (with a touch screen and buttons), a gate controller, a power conversion module, a video module and the like, wherein the control cabinet is controlled by a remote terminal controller independently developed, is compatible with electric and manual opening and closing, can accurately control the opening and closing of the gate, has the function of emergency electric opening and closing in case of control failure, is compatible with field manual control, field touch control, remote mobile phone APP control, field mobile phone APP Bluetooth control and computer WEB control, uses an absolute encoder and a mechanical code disc, has the function of gate opening degree memory in case of power failure, and the power supply system is composed of a solar cell panel, a stand, a storage battery (buried) and the like, and is compatible with solar power and mains power supply.

[0026] Preferably, the valve opening degree control calculation of the control unit is as follows:

[0027]

[0028] Wherein, θ is the rotation angle of the motor, r is the radius of the hoisting wheel, and h is the lifting height.

[0029] The flow calculation is as follows:

[0030]

[0031] Wherein, Q is the flow, A is the flow area, and H is the water head, which is the water level difference before and after the gate.

[0032] A = (W x θ) x L

[0033] Wherein, W is the gate width, L is the channel length, and θ represents the rotation angle of the motor, which is in degrees.

[0034] When the absolute value encoder is used for gate plate position detection, the position P of the gate plate is proportional to the pulse number N of the encoder:

[0035] Wherein, P is the gate plate position, and S is the total lifting stroke of the gate plate.

[0036] The motor power calculation formula of the control unit valve is as follows:

[0037]

[0038] Wherein, P motor is the motor power, v is the lifting speed of the gate plate, F is the water pressure, and η is the transmission efficiency.

[0039] The water pressure calculation in the control unit is as follows:

[0040] F = p x g x h x A

[0041] Wherein: F is the water pressure; g is the gravity acceleration; A is the gate area;

[0042] The transmission delay T of the remote control instruction in the wireless communication module is calculated by network communication delay and system processing time:

[0043] T = T net + T proc

[0044] Wherein: T is the total delay time; T proc is the system processing time, and T net is the net torque;

[0045] The gate opening and closing time t is calculated by the gate lifting speed and the gate lifting height:

[0046]

[0047] Wherein: t is the opening and closing time; v is the gate lifting speed.

[0048] The flow calculation through the gate in the flow measurement unit is as follows:

[0049]

[0050] Wherein: Q is the flow through the gate; A is the gate opening area; H1 is the water level in front of the gate.

[0051] The gate state calculation based on image processing in the video unit is as follows:

[0052]

[0053] The opening degree H of the current gate is calculated by detecting the pixel distance d from the top of the gate to the bottom of the image through image recognition technology, and combining the total height D of the image; H max is the maximum opening degree.

[0054] Compared with the prior art, the flat-bottom short-throat integrated channel gate provided by the application has the following beneficial effects:

[0055] 1、The water measuring channel size of the application is smaller than that of the same condition of the Ba's channel, and the water level and flow can be regulated and controlled through the gate at the throat of the equipment, so that the water measuring observation is convenient, the total cost of the non-integrated water measuring and water control equipment with the same function is low, the water measuring precision meets the field water measuring requirement of the irrigation area, and the beneficial effects of accurate flow measurement, reliable control opening and closing, and controllable cost are achieved.

[0056] 2、The application can accurately measure flow when the gate is fully opened, and the outflow is free under the design flow condition, with a measurement error of less than 5%, which is greatly improved compared to the same type of water measuring tank. Meanwhile, the device is highly automated and intelligent, the water level is measured by a radar water level gauge, the gate opening is measured by a gate position gauge, and the flow can also be set according to user needs. The internal control terminal synchronously monitors the water level and gate position to calculate the flow, and automatically adjusts the gate opening to the set flow. The device has the advantages of accurate flow measurement, reliable control and opening and closing, controllable cost, compliance with domestic and foreign control device protocols, and quick adaptation to the information platform of irrigation areas, and achieves the beneficial effects of compliance with domestic and foreign control device protocols and quick adaptation to the information platform of irrigation areas. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 It is a schematic diagram of the overall structure of the application;

[0058] Figure 2 It is a schematic diagram of the water measuring tank structure of the application;

[0059] Figure 3 It is a schematic diagram of the gate body structure of the application.

[0060] 1, water measuring tank; 101, contraction section; 102, throat; 103, diffusion section; 2, gate body. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0062] Please refer to Figure 1 , the flat-bottomed short-throat measurement and control integrated tank gate, comprising a water measuring tank 1 and a gate body 2 installed in the water measuring tank 1, the water measuring tank 1 is composed of a contraction section 101, a throat 102 and a diffusion section 103;

[0063] The gate body 2 is also connected to a hoist, a control system and a power supply system, and the gate body 2, the hoist, the control system and the power supply system together constitute a gate.

[0064] Specifically, the water measuring tank 1 and the gate body 2 installed in the water measuring tank 1 are made of aviation aluminum alloy material, and the surface is treated with hard anode. Through the surface hard anode treatment, the strength is high, the weather resistance is strong, the service life is long, up to 40 years; the transmission parts are made of high-quality structural steel with chrome plating treatment on the surface, which is wear-resistant and corrosion-resistant.

[0065] Specific, the speed reducer motor is a worm reducer, with reverse self-locking function, speed reducer motor encoder counting, limit switch, safety switch power control, by using worm reducer, with reverse self-locking function, encoder counting, limit switch, safety switch power control, measurement accuracy is higher than 95%, the operation system is safe and reliable.

[0066] Specific, the gate body 2 is composed of a column, a sill, a crossbeam, a gate, a screw and a water seal, the water seal is made of silicone rubber, which has strong weather resistance and anti-aging for 30 years; the slide rail is made of high wear-resistant lining, which has small friction and high wear resistance.

[0067] Specific, the opening and closing machine further comprises a manual opening and closing, a speed reducer and a coupling.

[0068] Specific, the control unit valve opening control calculation is:

[0069]

[0070] Wherein: θ is the motor angle; r is the radius of the hoisting wheel, h is the lifting height;

[0071] The flow calculation is:

[0072]

[0073] Wherein: Q is the flow; A is the flow area; H is the water head, which is the water level difference before and after the gate;

[0074] A = (W x θ) x L

[0075] Wherein: W is the gate width; L is the channel length, θ represents the motor angle, unit is degree;

[0076] When the absolute value encoder is used for gate position detection, the gate position P is proportional to the pulse number N of the encoder:

[0077] Wherein: P is the gate position; S is the total lifting stroke of the gate; S is the total lifting stroke of the gate.

[0078] The motor power calculation formula in the control unit valve is:

[0079]

[0080] Wherein: P motor is the motor power, v is the gate lifting speed; F is the water pressure; η is the transmission efficiency.

[0081] The water pressure calculation in the control unit is:

[0082] F = ρ x g x h x A

[0083] Wherein: F is water pressure; g is gravity acceleration; A is gate area;

[0084] The transmission delay T of remote control instruction in wireless communication module is calculated by network communication delay and system processing time:

[0085] T=T net +T proc

[0086] Wherein: T is total delay time; T proc is system processing time, T net is net torque;

[0087] The gate opening and closing time t is calculated by gate lifting speed and gate lifting height:

[0088]

[0089] Wherein: t is opening and closing time; v is gate lifting speed.

[0090] The flow calculation through the gate by the flow measurement unit is:

[0091]

[0092] Wherein: Q is the flow through the gate; A is the opening area of the gate; H1 is the water level in front of the gate.

[0093] The gate state calculation based on image processing in the video unit is:

[0094]

[0095] The opening degree H of the current gate is calculated by detecting the pixel distance d from the top of the gate to the bottom of the image through image recognition technology, combined with the total height D of the image; H max is the maximum opening degree.

[0096] The control system is composed of operation panel (with touch screen and keys) gate controller, power conversion module, video module, etc., wherein the control cabinet is controlled by the remote terminal controller developed independently, compatible with electric and manual opening and closing, can accurately control the opening and closing of the gate, has the function of emergency electric opening and closing in case of control failure; compatible with field hand control, field touch control, remote mobile phone APP control, field mobile phone APP Bluetooth control, computer WEB control, uses absolute encoder, mechanical code disc, has the function of power-off gate opening degree memory; the power supply system is composed of solar panels, vertical rods, storage batteries (buried), etc., compatible with solar power and mains power supply.

[0097] Example one

[0098] F is the static water pressure of the whole gate, and the force position is at the water level of 2 / 3h. P is the static water pressure, which is linearly distributed from small to large from the water level.

[0099] The static water pressure is F=1 / 2rh 2 B

[0100] The static water pressure (the pressure of any point) P=γh

[0101] F: force on the gate; P: water pressure; r: water density, 1*10 4 N / m 3 ; B: water stop width; h: water level height;

[0102] Calculation results:

[0103]

[0104] Gate plate strength checking

[0105] The gate plate adopts honeycomb aluminum plate composite aluminum plate, and the surface is hard anodizing treatment, as shown in the following figure, the middle is 70mm honeycomb aluminum core material, the four surrounding frames are 60mm*60mm solid aluminum alloy square materials, and the two sides are covered with aluminum plate each 5mm, the honeycomb aluminum core, the frame and the cover plate are integrally formed by honeycomb aluminum forming technology. The total thickness of the forming is 70mm.

[0106] Gate plate parameters

[0107]

[0108]

[0109] The gate plate parameters are as follows:

[0110] The mechanical parameters of the honeycomb plate are as follows:

[0111]

[0112] Strength simulation

[0113] Modeling with the gate plate parameters and mechanical parameters of the honeycomb core in the above table; press according to the water pressure model, the static water pressure is shown in the following figure, and the gate plate is simulated by finite element analysis. Static water pressure pressure model

[0114] The maximum stress position is the contact position of the gate plate bottom and the frame;

[0115] The maximum stress is 2*10 7 / m 2 ;

[0116] The maximum deformation position is the middle position of the gate plate bottom;

[0117] Maximum deformation: 0.517 mm;

[0118] Material yield strength: 0.2% yield strength is 1.3*10 8 N / m 2 ;

[0119] Safety factor: 7.37 (ratio of yield strength to maximum stress);

[0120] Check results: meet the strength requirements.

[0121] Opening and closing force calculation

[0122] Calculation formula

[0123] According to the calculation formula of "Water Conservancy and Hydropower Engineering Steel Gate Design Specification" (SL74-2013): as follows:

[0124] Opening force: Fq = nt (Tzd + Tzs) + n'GG + PX + Gj + Ws

[0125] Closing force: Fw = nt (Tzd + Tzs) - nGG + Pt;

[0126] Lifting force: P t = γβ t HD1B zs

[0127] When the calculation result is "positive" value, it needs to be added; when it is "negative" value, it can be closed by relying on its own weight.

[0128] Opening and closing force calculation

[0129] n T Friction resistance safety factor, 1.2; n G Gate self-weight correction coefficient, 0.9; W s Water column weight acting on the gate, 0; P t Lifting force; β t Lifting coefficient, 1.0, D1 gate bottom water to the upstream panel distance 0.20 m; n' G Gate correction coefficient when calculating main force and opening force, 1.1; G Gate self-weight; Gj Added weight 0; PX Suction force 0; Tzd Support friction resistance; Tzs Water stop friction resistance;

[0130] Friction coefficient of sliding block f = 0.3 (friction coefficient of aluminum alloy and rubber is 0.25)

[0131] The opening force required for the operation of the aluminum alloy gate:

[0132] Serial number b (mm) h (mm) t (mm) Self-weight (kg) Door opening force (kN) Upthrust force (kN) Door closing force (kN) 1 2800 2000 70 318 20.52 4.2 16.02

[0133] Motor selection check

[0134] P = Fq * h * A / tμ

[0135] h: lifting distance, maximum 2.m; A: margin coefficient, 2.5; μ: transmission efficiency, 0.5; t: opening and closing time, about 780s; the calculated result is that the required power of the gate is 240W; the minimum safety factor of the gate plate is 7.37, the strength meets the requirements, the motor power is 240w, and the maximum opening and closing requirements of the harsh environment are met.

[0136] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat-bottomed short-throat integrated measuring and controlling sluice, comprising a measuring chute (1) and a sluice body (2) installed in the measuring chute (1), characterized in that: The water measuring tank (1) is composed of a contraction section (101), a throat (102) and a diffusion section (103); the gate body (2) is also connected with a hoist, a control system and a power supply system, and the gate body (2), the hoist, the control system and the power supply system jointly constitute a gate; The control system is composed of a power supply unit, the gate body (2), a power unit, a protection unit, a control unit, a flow measurement unit and a video unit, and the gate body (2), the control unit and the power supply unit are independently designed and connected with each other through data lines; The power supply unit is used for providing stable power supply for the whole gate system, and comprises a solar power supply system, a storage battery and a power management module, so as to ensure long-time stable operation of the system in a field environment; The gate body (2) is a main structure of the gate and bears water pressure and load; The power unit is used for providing power for opening and closing of the gate; The protection unit is used for protecting the gate system from external environmental factors, and comprises waterproof, dustproof and anti-corrosion measures, so as to ensure reliable operation of the system in a harsh environment; The control unit is used for realizing intelligent control of the gate, and comprises a remote control terminal, a sensor and a gate position meter, is responsible for receiving a remote instruction, monitoring a gate state, controlling an opening degree of a gate plate, adopts an absolute value encoder for gate plate position detection and has a power-off memory function; the control unit is connected with a remote control center through a wireless communication module, so as to realize real-time transmission and remote control of data; The flow measurement unit is used for measuring flow through the gate, and calculates the flow through the gate through water level information collection before and after the gate, flow calculation software and sensor data; The video unit is used for real-time monitoring of a gate site, and comprises a camera, a video acquisition card and a video transmission module, is responsible for collecting a gate state, flow data and video images of the site and uploading them to the remote control center, the camera adopts an industrial-grade camera with high definition and wide dynamic range, supports night infrared light supplement and ensures clear imaging under light conditions; video transmission adopts 4G / 5G wireless communication technology, so as to realize real-time transmission of data; The hoist further comprises a manual opening and closing device, a reduction motor and a coupling.

2. The flat-bottomed short-throat control and monitoring integrated slot gate according to claim 1, characterized in that: The water measuring tank (1) and the gate body (2) installed in the water measuring tank (1) are made of aviation aluminum alloy material and are subjected to hard anode treatment on the surface.

3. The flat-bottomed short-throat control and monitoring integrated slot gate according to claim 1, characterized in that: The reduction motor is a turbine worm type speed reducer and has a reverse self-locking function, and the reduction motor adopts encoder counting, travel switch limiting and safety switch power-off control.

4. The flat-bottomed short-throat control and monitoring integrated slot gate according to claim 1, characterized in that: The gate body (2) is composed of a vertical column, a bottom sill, a cross beam, a gate plate, a screw rod and a water stop seal.

5. The flat-bottomed short-throat control and monitoring integrated slot gate according to claim 1, characterized in that: The control unit valve opening degree control calculation is as follows: Wherein, θ is a motor rotation angle, r is a hoist wheel radius and h is a lifting height; The flow calculation is as follows: Wherein, Q is flow, A is flow area, H is water head and the water head is taken as a water level difference before and after the gate; A=(W×θ)×L Wherein, W is a gate width, L is a channel length, θ represents a motor rotation angle and the unit is degree; When the absolute value encoder is used for gate plate position detection, the gate plate position P is proportional to the pulse number N of the encoder: Wherein, P is a gate plate position, S is a total lifting stroke of the gate plate and S is a total lifting stroke of the gate plate.

6. The flat-bottomed short-throated control and monitoring integrated slot gate according to claim 5, characterized in that: The motor power calculation formula in the control unit valve is: where: P motor is the motor power, v is the speed of the gate, F is the water pressure, and η is the transmission efficiency.

7. The flat-bottomed short-throated control and monitoring integrated slot gate according to claim 5, characterized in that: The water pressure calculation in the control unit is: F=ρ×g×h×A Wherein: F is water pressure; g is gravity acceleration; A is gate area; The transmission delay T of the remote control instruction in the wireless communication module is calculated through network communication delay and system processing time: T = T net + T proc Where: T is the total delay time; T proc is the system processing time, T net is the net torque; The gate opening and closing time t is calculated through the gate lifting speed and the gate lifting height: Wherein: t is the opening and closing time; v is the gate lifting speed.

8. The flat-bottomed short-throated control and monitoring integrated slot gate according to claim 4, characterized in that: The flow calculation through the gate in the flow measurement unit is: Wherein: Q is the flow through the gate; A is the gate opening area; H1 is the water level in front of the gate.

9. The flat-bottomed short-throated control and monitoring integrated slot gate according to claim 3, characterized in that: The gate state calculation based on image processing in the video unit is: The opening degree H of the current gate is calculated by detecting the pixel distance d from the top of the gate to the bottom of the image through image recognition technology and combining the total height D of the image; H max is the maximum opening degree.

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