A multifunctional test system for gate opening and closing

Abstract

The present invention relates to a multifunctional test system for gate opening and closing, comprising a water supply control system, a water delivery pipe of the water supply control system is connected to a water tank, and the downstream side of the water tank is connected to a tailwater pool through a flow channel system, a gate for opening and closing a waterway is arranged between the flow channel system and the tailwater pool, the gate is drive-connected to a gate control system, a tailwater control system drive-connected to the gate control system is arranged downstream of the tailwater pool; and a monitoring system is respectively connected to the water supply control system, the tailwater control system, and the gate control system. The present invention provides a multifunctional test system for gate opening and closing, which has the performance of convenient detection, wide application range, and strong application ability.

Description

Technical Field

[0001] The invention relates to the field of water conservancy, and in particular to a multifunctional test system for opening and closing a gate. Background Art

[0002] The gate is a water retaining structure that can be closed, opened or partially opened to control the water flow at the orifice. It is an important part of hydraulic structures. Its main function is to control the water level, adjust the flow, discharge floods or water, and discharge sediment, ice and floating objects according to the needs of the project. According to its working nature, it can be divided into working gates, emergency gates and maintenance gates. The emergency gate is generally used to close the orifice in the moving water and block the water flow when the building and equipment fail. The maintenance gate is used to block water for a short period of time during the maintenance of buildings, working gates and mechanical equipment, and is generally opened and closed under static water conditions. As the main application type of emergency gates and maintenance gates, the plane gate is closed in the moving water in the event of an emergency in the discharge structure or other facilities, and is responsible for preventing the expansion of the accident. Therefore, it is directly related to the technical feasibility and safety reliability of the discharge structure.

[0003] At present, judging from the overall development trend of plane gates at home and abroad, with the construction of high reservoir dams, the application head of plane gates is getting higher and higher. Under the operating conditions of high head and high flow rate, problems such as gate dynamic water opening and closing and gate slot cavitation are very prominent. Whether the gate's body shape and hydraulic performance are good, and whether the gate can be effectively opened and closed under high head conditions are all issues of concern in gate design and application.

[0004] In the prior art plane gate control system, for example, patent application number: CN202020321967.0; patent name: plane gate system for automatic water level control; discloses a plane gate system for automatic water level control, including two gate piers, a plane gate fixed between the two gate piers and sliding up and down along the gate piers, a through hole is provided on the surface of the plane gate, and a flap door cooperating with the through hole is hingedly provided on the plane gate. It also includes a counterweight mechanism rotatably arranged on the inner side of the two gate piers, and the counterweight mechanism abuts against the side wall of the flap door. The counterweight mechanism includes a rotating rod, a counterweight block, a hanging rod respectively fixed on the counterweight block, and a top rod, and the rotating rod is rotatably arranged on the inner side wall of the two gate piers; the two ends of the hanging rod are respectively fixed to the rotating rod and the counterweight block; one end of the top rod is fixed to the bottom of the counterweight block, and the other end abuts against the side wall of the flap door. The water flow of the through hole is controlled by the action of the counterweight block, and the counterweight is increased or decreased on the hook of the counterweight block to achieve the purpose of automatically controlling different upstream water levels.

[0005] However, in the prior art, the load on the gate body and the flow pattern of the water flow during the dynamic water opening and closing of the plane gate are extremely complex, and the problem of the gate being unable to be opened or closed caused by this is also common in water conservancy projects. In the research on the hydrodynamic characteristics of gates, there are mainly prototype observations, physical model tests and numerical simulation calculations. Prototype observations are limited by the conditions of the project site, and the research costs are relatively high. Generally, research on prototype observations of gate hydraulics is not conducted. In the past, due to the immaturity of the numerical simulation tests on the dynamic water opening and closing of gates, the accuracy of the results could not meet the needs of the project. Therefore, for the design of high-head plane gates in water conservancy projects, special model tests are usually required to study the hydrodynamic loads and opening and closing forces of the gates to provide a basis for the design of the gates. Summary of the invention

[0006] The present invention overcomes the deficiencies of the prior art and provides a multifunctional test system for gate opening and closing, which has the performance of convenient detection, wide application range and strong application capability.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a multifunctional test system for opening and closing gates, including a water supply control system, a water supply pipe of the water supply control system is connected to a water tank, and the downstream side of the water tank is connected to a tailwater pool through a flow channel system, a gate for opening and closing the waterway is arranged between the flow channel system and the tailwater pool, the gate is drivingly connected to the gate control system, and a tailwater control system drivingly connected to the gate control system is arranged downstream of the tailwater pool; and a monitoring system respectively connected to the water supply control system, the tailwater control system, and the gate control system.

[0008] In a preferred embodiment of the present invention, the water supply control system includes an intelligent water pump unit connecting a water tank and a water reservoir, the intelligent water pump unit includes a water pump unit and a control box driven by the water pump unit, the water inlet end of the water pump unit is connected to the water reservoir, and the water outlet end of the water pump unit is connected to the water tank through the water pipe; an overflow pipe is also provided on the water tank; an electromagnetic flowmeter is provided in the water pipe; an upstream liquid level sensor is provided in the water tank, and an intelligent monitoring valve is also provided on the overflow pipe.

[0009] In a preferred embodiment of the present invention, the flow channel system includes a flow channel connecting the water tank and the tailwater pool, and a gate groove arranged between the flow channel and the tailwater pool; the gate is arranged in the gate groove.

[0010] In a preferred embodiment of the present invention, the gate control system includes a plurality of gate opening and closing mechanisms corresponding to the gate slots, and the gate opening and closing mechanisms are drivingly connected to the gate movably arranged in the gate slots.

[0011] In a preferred embodiment of the present invention, the tailwater control system includes an overflow weir plate arranged at the downstream side of the tailwater pool, and an overflow weir opening and closing mechanism drivingly connected to the overflow weir plate.

[0012] In a preferred embodiment of the present invention, the depth of the upstream side of the tailwater pool is greater than the depth of the downstream side, and the width of the upstream side of the tailwater pool is less than the width of the downstream side. Furthermore, the tailwater pool adopts the structure of an inclined plate sedimentation tank, which can cooperate with the overflow weir to improve the uniformity of the water flow.

[0013] In a preferred embodiment of the present invention, a drain outlet is provided on the downstream side of the tailwater pool, and an overflow weir opening and closing mechanism is provided on the tailwater pool, the overflow weir opening and closing mechanism includes an overflow weir frame provided on the tailwater pool, the overflow weir frame corresponds to the drain outlet, an overflow weir power assembly system is provided on the overflow weir frame, and the overflow weir power assembly system is drivingly connected to the overflow weir plate movably embedded in the drain outlet; a downstream liquid level sensor is also provided in the tailwater pool.

[0014] In a preferred embodiment of the present invention, a water inlet is provided on the upstream side of the tailwater pool, and a gate opening and closing mechanism is provided on the tailwater pool, the gate opening and closing mechanism includes a gate frame corresponding to the water inlet, and a gate power assembly system is provided on the gate frame; the gate power assembly system is connected to the gate drive, and the gate is movably embedded in a gate groove in the water inlet.

[0015] In a preferred embodiment of the present invention, the gate power assembly system is drivingly connected to an intelligent control cabinet I arranged outside the tailwater pool; the power assembly system includes a stepper motor arranged on the gate frame, and a reducer drivingly connected to the stepper motor, the reducer is drivingly connected to a wire rope pulley, the wire rope pulley is drivingly wound with a wire rope connected to the gate, and the stepper motor is also connected to an encoder; or / and, the overflow weir power assembly system is drivingly connected to an intelligent control cabinet II arranged outside the tailwater pool; the overflow weir power assembly system includes a stepper motor arranged on the overflow weir frame, and a reducer drivingly connected to the stepper motor, the reducer is drivingly connected to a wire rope pulley, the wire rope pulley is drivingly wound with a wire rope connected to the overflow weir plate; and the stepper motor is also connected to an encoder.

[0016] Specifically, the monitoring system includes the intelligent water pump unit, electromagnetic flowmeter, upstream liquid level sensor, intelligent monitoring valve, pressure sensor, downstream liquid level sensor, intelligent control cabinet I and intelligent control cabinet II.

[0017] In a preferred embodiment of the present invention, a test method for a multifunctional test system for gate opening and closing includes the following steps:

[0018] Step 1. Before the test, adjust the initial state, adjust the gate to a fixed opening through the gate opening and closing mechanism, the overflow weir plate opening is in the initial state, and the intelligent monitoring valve is initially set to be fully closed; the intelligent water pump unit introduces the water flow into the water tank and then into the tailwater pool through the flow channel system; after the tailwater pool is filled with water, the water flows down to the return water pool through the overflow weir, and the intelligent control cabinet II is adjusted again to adjust the overflow weir plate to a fixed opening through the overflow weir opening and closing mechanism. After the requirements of the upstream and downstream water levels are met, wait for the water flow to stabilize and record the test data under the initial stable state.

[0019] Step 2. During the test, the upstream water level test requirements are met by adjusting the intelligent monitoring valve; the overflow weir is opened to a fixed opening to meet the upstream and downstream water level requirements; the overflow weir opening is adjusted in real time according to the water level value monitored by the downstream liquid level sensor, and the intelligent water pump unit adjusts the flow rate and the relative opening of the intelligent monitoring valve in real time according to the water level value of the upstream liquid level and the water level value of the downstream liquid level, while meeting different flow rates and different water level requirements under different working conditions, realizing full channel linkage and coordinated water diversion.

[0020] Step three: after the water flow stabilizes, set the monitoring time and flow measurement frequency of the pressure sensors installed at different positions on the gate frame or gate slot, record and store the test data when the gate is used in different states, and test the hydraulic characteristics of the gate's dynamic water opening and closing under different working conditions.

[0021] Specifically, in step one, before the test, the intelligent control cabinet I is adjusted, and the gate is adjusted to a fixed opening through the gate opening and closing mechanism, the overflow weir plate opening is initially set to the initial state, and the intelligent monitoring valve is initially set to be fully closed; the intelligent water pump unit is turned on, and the water flows into the water tank through the water pipe via the electromagnetic flowmeter, and the upstream liquid level sensor uploads the water level monitoring information to the intelligent water pump unit; the water flows from the bottom of the water tank through the flow channel, the gate slot, and the gate into the tailwater tank, and the downstream liquid level sensor synchronously uploads the water level monitoring information to the intelligent water pump unit; after the tailwater tank is filled with water, the water flows through the overflow weir and flows down to the return water tank, and the intelligent control cabinet II is adjusted again, and the overflow weir plate is adjusted to a fixed opening through the overflow weir opening and closing mechanism. After the upstream and downstream water level requirements are met, the water flow is stabilized, the flow measurement frequency of the pressure sensor is set, and the test data is recorded and stored for analysis;

[0022] Specifically, in step 2, during the test, the water level data is monitored by the upstream liquid level sensor, and the intelligent monitoring valve is adjusted to meet the upstream water level test requirements; according to the water level data monitored by the downstream liquid level sensor, the overflow weir plate is opened to a fixed opening through the overflow weir opening and closing mechanism by adjusting the intelligent control cabinet II, and the upstream and downstream water level requirements are met at the same time; when the intelligent monitoring valve is in a fully closed state, if the water level value monitored by the upstream liquid level sensor is higher than the water level required by the test, the intelligent monitoring valve is opened to a certain setting angle to allow water to flow from the overflow pipe to the return water tank; when the intelligent monitoring valve is in a fully closed state, the water level value monitored by the upstream liquid level sensor is lower than the water level required by the test, and the intelligent water pump unit is adjusted to increase the flow input to meet the test requirements; the overflow weir plate opening is adjusted in real time according to the water level value monitored by the downstream liquid level sensor, and the intelligent water pump unit adjusts the flow rate and the relative opening of the intelligent monitoring valve in real time according to the water level value monitored by the upstream liquid level sensor and the water level value monitored by the downstream liquid level sensor, so that different flow rates and different water level requirements can be met at the same time under different working conditions, realizing full channel linkage and coordinated water diversion.

[0023] Specifically, in step three, after the water flow stabilizes, set the monitoring time and flow measurement frequency of pressure sensors installed at different positions of the gate, such as the main beam, secondary beam, water-facing surface, and water-receiving surface, and record and store the test data of the gate at different openings, different upstream water levels, and downstream water levels, to test the hydraulic characteristics of the gate's dynamic water opening and closing under different working conditions.

[0024] The present invention solves the defects existing in the background technology, and the beneficial effects of the present invention are as follows:

[0025] The invention discloses a multifunctional test system for gate opening and closing, which has the performances of convenient detection, wide application range and strong application capability.

[0026] 1. The present invention simulates the dynamic water opening and closing system of the plane gate of the hydropower station to more intuitively test the plane valve. The test system adopts a water supply control system, a tailwater control system, a gate control system and a monitoring system arranged on the water tank and the tailwater pool, which can monitor and control the performance of the plane gate in different working environments.

[0027] 2. In the present invention, the gate control system is used to adjust the opening of the gate and overflow weir plate on the tailwater pool, simulating the working environment of the plane gate in the hydropower station under different working conditions, thereby improving the convenience and detection diversity of the performance test of the plane gate during use.

[0028] 3. The present invention detects the use parameters and environmental parameters of the corresponding components during work by using the electromagnetic flowmeter, upstream liquid level sensor, intelligent monitoring valve, pressure sensor, and downstream liquid level sensor in the monitoring system, which is more conducive to data collection and monitoring of the use status of the components in the working state.

[0029] 4. The gate opening and closing mechanism of the present invention has better structural stability, which is more conducive to detecting the working state of the plane gate in the gate opening and closing mechanism. The driving structure setting of the overflow weir opening and closing mechanism makes the lifting and lowering operation of the overflow weir plate more convenient, which is conducive to the overflow weir plate to adjust the working environment of the simulated plane gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a schematic structural diagram of a multifunctional test system for gate opening and closing in a preferred embodiment of the present invention.

[0032] Figure 2 It is a schematic diagram of the structure of a water supply control system in a preferred embodiment of the present invention.

[0033] Figure 3 It is a schematic diagram of the structure of the flow channel system in a preferred embodiment of the present invention.

[0034] Figure 4 It is a schematic diagram of the structure of a gate control system in a preferred embodiment of the present invention.

[0035] Figure 5 It is a schematic structural diagram of a tailwater control system in a preferred embodiment of the present invention.

[0036] Figure 6 It is a schematic diagram of the structure of the gate in a preferred embodiment of the present invention.

[0037] Figure 7 It is a schematic diagram of the structure of the door slot in a preferred embodiment of the present invention.

[0038] Figure 8 It is a schematic diagram of the structure of the gate opening and closing mechanism in a preferred embodiment of the present invention.

[0039] Fig. 9 It is a schematic diagram of the structure of the overflow weir opening and closing mechanism in a preferred embodiment of the present invention.

[0040] Fig.10 It is a schematic structural diagram of a gate power assembly system or an overflow weir power assembly system in a preferred embodiment of the present invention.

[0041] In the figure: A, water supply control system, B, flow channel system, C, gate control system, D, tailwater control system, E, monitoring system, 1, intelligent water pump unit, 2, water pipe, 3, electromagnetic flowmeter, 4, water tank, 5, upstream liquid level sensor 5, 6, overflow pipe, 7, intelligent monitoring valve, 8, flow channel, 9, gate slot, 10, gate opening and closing mechanism, 11, gate rack, 12, gate power assembly system, 13, gate rack base, 14, stepper motor, 15, reducer, 16, encoder, 17, hand crank, 18, steel Wire rope wheel, 19. Gate groove support plate, 20. Gate groove side plate, 21. Gate, 22. Main wheel, 23. Gate leaf, 24. Bottom main beam web, 25. Middle longitudinal beam 2, 26. Panel, 27. Middle longitudinal beam 1, 28. Bottom main beam flange, 29. Bottom longitudinal beam web, 30. Bottom longitudinal beam flange, 31. Pressure sensor, 32. Downstream liquid level sensor, 33. Tailwater tank, 34. Intelligent control cabinet I, 35. Overflow weir opening and closing mechanism, 36. Overflow weir rack, 37. Overflow weir plate, 38. Overflow weir rack base, 39. Intelligent control cabinet II. DETAILED DESCRIPTION

[0042] The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0043] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figure 1 to Figure 10As shown, in an embodiment of the present invention, a multifunctional test system for gate opening and closing includes a water supply control system A, a water delivery pipe 2 of the water supply control system A is connected to a water tank 4, and the downstream side of the water tank 4 is connected to a tailwater pool 33 through a flow channel system B, and the flow channel system B includes a flow channel 8 connecting the water tank 4 and the tailwater pool 33, and a gate slot 9 arranged between the flow channel 8 and the tailwater pool 33; a gate 21 is arranged in the gate slot 9. The flow channel system B is installed on the downstream side of the water tank 4, and is mainly responsible for the connection between the water tank 4 and the gate slot 9. The water flows out from the bottom of the downstream side of the water tank 4, passes through the connection section of the flow channel 8 to the downstream gate slot 9, and the bottom sill of the gate slot 9 is smoothly connected to the flow channel system B. The screws arranged at the bottom of the gate slot support plate 19 are adjusted to control the relative position between the gate slot support plate 19 and the gate slot side plate 20, thereby adjusting the relative width of the gate slot 9, so that the multifunctional test system is suitable for a variety of experimental schemes. The gate 21 for opening and closing the waterway is arranged between the flow channel system B and the tailwater pool 33, and the gate 21 is connected to the gate control system C by driving. The depth of the upstream side in the tailwater pool 33 is greater than the depth of the downstream side, and the width of the upstream side of the tailwater pool 33 is smaller than the width of the downstream side. The upstream side of the tailwater pool 33 is provided with a water inlet with a gate groove 9 embedded therein, and the tailwater pool 33 is provided with a gate opening and closing mechanism 10. The tailwater pool 33 is provided with a tailwater control system D connected to the gate control system C by driving. The gate opening and closing mechanism 10 includes a gate frame 11 corresponding to the water inlet, and the gate frame 11 is provided with the gate opening and closing mechanism 10, and the gate opening and closing mechanism 10 is connected to the gate 21 by driving, and the gate 21 is movably embedded in the gate groove 9 and the gate frame 11 in the water inlet.

[0045] The monitoring system E is connected to the water supply control system A, the tailwater control system D, and the gate control system C respectively; the monitoring system E includes an electromagnetic flowmeter 3, an upstream liquid level sensor 5, an intelligent monitoring valve 7, a pressure sensor 31, and a downstream liquid level sensor 32 connected to the intelligent water pump unit 1 and / or the intelligent control cabinet Ⅰ34 and the intelligent control cabinet Ⅱ39 arranged outside the tailwater pool 33.

[0046] Specifically, the water supply control system A includes an intelligent water pump unit 1 connecting the water tank 4 and the water reservoir, the intelligent water pump unit 1 includes a water pump unit and a control box connected to the water pump unit, the water inlet end of the water pump unit is connected to the water reservoir, and the water outlet end of the water pump unit is connected to the water tank 4 through the water pipe 2; the water tank 4 is also provided with an overflow pipe 6; the water pipe 2 is provided with an electromagnetic flowmeter 3; the water tank 4 is provided with an upstream liquid level sensor 5, and the overflow pipe 6 is also provided with an intelligent monitoring valve 7. The gate control system C includes a gate opening and closing mechanism 10 corresponding to the gate slot 9, and the gate opening and closing mechanism 10 is connected to the gate 21 movably provided in the gate slot 9. The gate opening and closing mechanism 10 includes a gate 21 power assembly system 12 which is driven and connected to an intelligent control cabinet Ⅰ34 arranged outside the tailwater pool 33. The power assembly system includes a stepper motor 14 arranged on a gate frame 11, and a reducer 15 which is driven and connected to the stepper motor 14. The reducer 15 is driven and connected to a wire rope pulley 18, on which a wire rope connected to the gate 21 is driven and wound, and the stepper motor 14 is also connected to an encoder 16.

[0047] More specifically, the outlet of the intelligent water pump unit 1 is connected to the electromagnetic flowmeter 3 and the water tank 4 in sequence through the water pipe 2. The outlet of the water pipe 2 is fixedly connected to the lower part of one side of the water tank 4, and the electromagnetic flowmeter 3 is installed in the middle of the water pipe 2 to monitor the real-time water flow and the cumulative flow. An upstream liquid level sensor 5 is fixedly installed on one side of the inner wall of the water tank 4. The upstream liquid level sensor 5 is placed in the water stabilizing pipe in the water tank 4 to ensure stable monitoring of the water level, and to upload the monitoring water level data information to the intelligent water pump unit 1 in real time to adjust the flow rate. The inlet of the overflow pipe 6 is fixedly connected to the upper part of the other side of the water tank 4, and the intelligent monitoring valve 7 is fixed on the overflow pipe 6 and connected to the water tank 4. When the water level in the water tank 4 cannot meet the test requirements, the water level in the water tank 4 is controlled by adjusting the relative opening of the intelligent monitoring valve 7 to meet the water level required for the test, and the opening of the intelligent monitoring valve 7 and the flow rate information are uploaded to the intelligent water pump unit 1 to adjust the flow rate in real time.

[0048] More specifically, a gate frame base 13 is welded at the bottom of the gate frame 11 and fixed in concrete by expansion bolts for easy disassembly. The power assembly system is fixed to the center of the crossbeam of the gate frame 11 by bolts, and mainly includes a stepper motor 14, which can receive digital control signals or electric pulse signals and convert them into angular displacement or linear displacement; the reducer 15 is used to match the speed and transmit torque to ensure the safe operation of the gate 21; the encoder 16 converts the angular displacement or linear displacement into an electrical signal that can communicate, transmit, and store, and can intelligently adjust the relative opening of the gate 21; the hand crank 17 is used to manually control the opening and closing of the gate 21; the power assembly system is fixedly connected to the gate 21 through the wire rope pulley 18, which is convenient for adjusting the opening of the gate 21. The main wheels 22 are arranged on both sides of the gate 21 to prevent the gate 21 from colliding, tilting or blocking when it is raised and lowered, and to ensure that the gate 21 moves smoothly along the door track. The lifting lugs on the gate leaf 23 of the gate 21 are located at the lifting point of the gate 21, and are connected to the lifting device of the gate power assembly system 12 through a steel wire rope, bearing the full opening and closing force of the gate 21. The bottom main beam web 24 of the gate leaf 23 of the gate 21 is connected to the middle longitudinal beam 25 as a whole, and is not fixedly connected to the panel 26. It is connected by guide groove bolts of the middle longitudinal beam 1 27 and the middle longitudinal beam 25. The height of the bottom main beam can be adjusted steplessly by adjusting the position of the bolts, which is suitable for the experimental study of the hydraulic characteristics of the plane gate 21 under different working conditions. The bottom main beam flange 28 is installed on the bottom main beam web 24 by screws. The position of the screws on the bottom main beam web 24 is adjusted to change the relative height of the bottom main beam flange 28, which is convenient for adjusting different door bottom angles. The bottom longitudinal beam web 29 and the bottom longitudinal beam flange 30 can be fixedly installed by screws, and the installation angle of the bottom longitudinal beam flange 30 can be adjusted to different angles according to the relative position relationship between the bottom main beam web 24 and the bottom main beam flange 28. However, it is not limited to this. In other embodiments, the structure and installation structure of the gate 21 can be adjusted according to the specific structure of the plane gate to be tested. The pressure sensor 31 is fixedly installed at different positions such as the main beam, secondary beam, water-facing surface, and back surface of the gate 21. The flow measurement frequency of the pressure sensor 31 under different working conditions can be changed according to the test requirements, thereby improving the reliability of the test and enriching the test data. The downstream liquid level sensor 32 is fixed in the stabilizing pipe on the inner wall of the tailwater pool 33 next to the gate 21, monitors the downstream water level information of the gate 21 under different openings and different flow conditions, and uploads the monitored water level information data to the intelligent water pump unit 1 in real time for real-time flow control; the intelligent control cabinet I 34 is fixedly installed on one side of the outer wall of the tailwater pool 33, and controls the gate 21 opening and water level information in real time through the gate 21 opening information and upstream and downstream water level information on the display screen.

[0049] Specifically, the tailwater control system D includes an overflow weir plate 37 disposed on the downstream side of the tailwater pool 33, and an overflow weir opening and closing mechanism 35 drivingly connected to the overflow weir plate 37. A drain outlet is disposed on the downstream side of the tailwater pool 33, and an overflow weir opening and closing mechanism 35 corresponding to the drain outlet is disposed on the tailwater pool 33. The overflow weir opening and closing mechanism 35 includes an overflow weir rack 36 disposed on the tailwater pool 33, and the overflow weir rack 36 is provided with the overflow weir opening and closing mechanism 35. The overflow weir opening and closing mechanism 35 is drivingly connected to the overflow weir plate 37 movably embedded in the drain outlet and the overflow weir rack 36; a downstream liquid level sensor 32 is also disposed in the tailwater pool 33. The overflow weir opening and closing mechanism 35 includes an overflow weir power assembly system that is driven and connected to an intelligent control cabinet II 39 disposed outside the tailwater pool 33; the overflow weir power assembly system includes a stepper motor 14 disposed on an overflow weir frame 36, and a reducer 15 that is driven and connected to the stepper motor 14, the reducer 15 is driven and connected to a wire rope pulley 18, and the wire rope pulley 18 is driven and wound with a wire rope connected to the overflow weir plate 37; and the stepper motor 14 is also connected to an encoder 16.

[0050] More specifically, the overflow weir opening and closing mechanism 35 is fixed to the concrete of the overflow weir top by expansion bolts, and its structural composition includes an overflow weir frame 36 and an overflow weir power assembly system. The overflow weir frame 36 is fixedly installed in the concrete of the overflow weir top by the overflow weir frame base 38 welded at the bottom. The component composition and installation method of the overflow weir opening and closing mechanism 35 are the same as the gate opening and closing mechanism 10 in the gate control system C. The steel wire rope of the overflow weir opening and closing mechanism 35 is fixedly connected to the overflow weir plate 37, and several overflow holes are arranged on the overflow weir plate 37, which can make the water flow in the tailwater pool 33 flow smoothly. The intelligent control cabinet II 39 is fixedly installed side by side with the intelligent control cabinet I 34 on one side of the outer wall of the tailwater pool 33. The overflow weir plate 37 is adjusted to different angles through the intelligent control cabinet II 39 according to the water level information monitored by the downstream liquid level sensor 32 to meet the water level requirements of the tailwater pool 33, and combined with the tailwater control system D and the gate control system C to form a full channel linkage control system to coordinate water supply.

[0051] Embodiment 2

[0052] A test method of a multifunctional test system for opening and closing a gate 21 in the first embodiment comprises the following steps:

[0053] Step 1. Before the test, adjust the initial state, adjust the gate 21 to a fixed opening through the gate opening and closing mechanism 10, the overflow weir plate 37 opening is in the initial state, and the intelligent monitoring valve 7 is initially set to be fully closed; the intelligent water pump unit 1 introduces the water flow into the water tank 4 and then introduces it into the tailwater pool 33 through the flow channel system B; after the tailwater pool 33 is filled with water, the water flows down to the return water pool through the overflow weir, and the intelligent control cabinet II 39 is adjusted again to adjust the overflow weir plate 37 to a fixed opening through the overflow weir opening and closing mechanism 35. After the requirements of the upstream and downstream water levels are met, wait for the water flow to stabilize and record the test data under the initial stable state.

[0054] Specifically, before the test, the intelligent control cabinet I 34 is adjusted, the gate 21 is adjusted to a fixed opening through the gate opening and closing mechanism 10, the opening of the overflow weir plate 37 is set to the initial state, and the intelligent monitoring valve 7 is initially set to be fully closed; the intelligent water pump unit 1 is turned on, and the water flows into the water tank 4 through the water pipe 2 via the electromagnetic flowmeter 3, and the upstream liquid level sensor 5 uploads the water level monitoring information to the intelligent water pump unit 1; the water flows from the bottom of the water tank 4 through the flow channel 8, the gate groove 9, and the gate 21 into the tailwater tank 33, and the downstream liquid level sensor 32 synchronously uploads the water level monitoring information to the intelligent water pump unit 1; after the tailwater tank 33 is filled with water, the water flows through the overflow weir and flows down to the return water tank, and the intelligent control cabinet II 39 is adjusted again, and the overflow weir plate 37 is adjusted to a fixed opening through the overflow weir opening and closing mechanism 35. After the upstream and downstream water level requirements are met, the water flow is stabilized, the flow measurement frequency of the pressure sensor 31 is set, and the test data is recorded and stored for analysis.

[0055] Step 2. During the test, the upstream water level test requirements are met by adjusting the intelligent monitoring valve 7; the overflow weir 37 is opened to a fixed opening to meet the upstream and downstream water level requirements; the opening of the overflow weir 37 is adjusted in real time according to the water level value monitored by the downstream liquid level sensor 32, and the intelligent water pump unit 1 adjusts the flow rate and the relative opening of the intelligent monitoring valve 7 in real time according to the water level value of the upstream liquid level and the water level value of the downstream liquid level, while meeting different flow rates and different water level requirements under different working conditions, realizing full channel linkage and coordinated water diversion.

[0056] Specifically, in step 2, during the test, the water level data is monitored by the upstream liquid level sensor 5, and the intelligent monitoring valve 7 is adjusted to meet the upstream water level test requirements; according to the water level data monitored by the downstream liquid level sensor 32, the overflow weir plate 37 is opened to a fixed opening through the overflow weir opening and closing mechanism 35 by adjusting the intelligent control cabinet II 39, and the upstream and downstream water level requirements are met at the same time; when the intelligent monitoring valve 7 is in a fully closed state, if the water level value monitored by the upstream liquid level sensor 5 is higher than the test required water level, the intelligent monitoring valve 7 is opened to a certain set opening, so that the water flows from the overflow pipe 6 to the return water tank. ; When the intelligent monitoring valve 7 is in a fully closed state, the water level value monitored by the upstream liquid level sensor 5 is lower than the water level required by the test, and the intelligent water pump unit 1 is regulated to increase the flow input to meet the test requirements; the opening of the overflow weir 37 is regulated in real time according to the water level value monitored by the downstream liquid level sensor 32, and the intelligent water pump unit 1 regulates the flow size and the relative opening of the intelligent monitoring valve 7 in real time according to the water level value monitored by the upstream liquid level sensor 5 and the water level value monitored by the downstream liquid level sensor 32. Under different working conditions, different flow and water level requirements can be met at the same time, realizing full-channel linkage and coordinated water diversion.

[0057] Step three, after the water flow stabilizes, set the monitoring time and flow measurement frequency of the pressure sensors 31 installed at different positions on the gate frame 11 or the gate slot 9, record and store the test data of the gate 21 when used in different states, and test the hydraulic characteristics of the gate 21 when opening and closing under different working conditions.

[0058] Specifically, in step three, after the water flow stabilizes, the pressure sensors 31 installed at different positions such as the main beam, secondary beam, water-facing surface and water-receiving surface of the gate 21 are set to monitor the time and flow measurement frequency, and the test data of the gate 21 at different openings, different upstream water levels and downstream water levels are recorded and stored to test the hydraulic characteristics of the gate 21 under different working conditions.

[0059] Working principle:

[0060] like Figure 1 to Figure 10 As shown, a multifunctional test system for opening and closing of a gate 21 of the present invention is formed on the basis of the research on the dynamic water opening and closing test of a traditional plane gate 21, and is a multifunctional and multi-dimensional hydropower station test system for dynamic water opening and closing of a plane gate 21 through various test tests that can realize different specifications and different working conditions.

[0061] Before the test, by adjusting the initial state, the gate 21 is adjusted to a fixed opening through the gate opening and closing mechanism 10, the overflow weir plate 37 is opened in the initial state, and the intelligent monitoring valve 7 is initially set to be fully closed; the intelligent water pump unit 1 introduces the water flow into the water tank 4 and then introduces it into the tailwater pool 33 through the flow channel system B; after the tailwater pool 33 is filled with water, the water flows down to the return water pool through the overflow weir, and the intelligent control cabinet II 39 is adjusted again to adjust the overflow weir plate 37 to a fixed opening through the overflow weir opening and closing mechanism 35. The opening of the overflow weir plate 37 includes the waterway blocking height opened by the relative lifting height between the top of the overflow weir plate 37 and the bottom of the tailwater pool 33 when the overflow weir plate 37 is lifted and lowered longitudinally, or / and, the waterway blocking angle formed by the swinging opening angle of the overflow weir plate 37 relative to the tailwater pool 33. After meeting the requirements of the upstream water level and the downstream water level, wait for the water flow to stabilize and record the test data in the initial stable state. During the test, the upstream water level test requirements are met by adjusting the intelligent monitoring valve 7; the overflow weir plate 37 is opened to a fixed opening to meet the upstream and downstream water level requirements; the opening of the overflow weir plate 37 is adjusted in real time according to the water level value monitored by the downstream liquid level sensor 32, and the intelligent water pump unit 1 adjusts the flow rate and the relative opening of the intelligent monitoring valve 7 in real time according to the water level value of the upstream liquid level and the water level value of the downstream liquid level, and meets the different flow and water level requirements under different working conditions, realizing the linkage and coordinated water diversion of the whole channel. After the water flow is stable, the monitoring time and flow measurement frequency of the pressure sensor 31 installed at different positions on the gate rack 11 or the gate slot 9 are set, and the test data of the gate 21 when used in different states are recorded and stored, and the hydraulic characteristics of the gate 21 under different working conditions are tested.

[0062] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A multifunctional test system for gate opening and closing, comprising a water supply control system, wherein a water delivery pipe of the water supply control system is connected to a water tank, and the downstream side of the water tank is connected to a tailwater tank through a flow channel system, characterized in that: A gate for opening and closing the waterway is provided between the flow channel system and the tailwater pool, the gate is drivingly connected to the gate control system, a tailwater control system drivingly connected to the gate control system is provided downstream of the tailwater pool; and a monitoring system connected to the water supply control system, the tailwater control system, and the gate control system respectively; The water supply control system includes an intelligent water pump unit for connecting the water tank and the water reservoir, the intelligent water pump unit includes a water pump unit and a control box connected to the water pump unit, the water inlet end of the water pump unit is connected to the water reservoir, and the water outlet end of the water pump unit is connected to the water tank through the water pipe; the water tank is also provided with an overflow pipe; the water pipe is provided with an electromagnetic flowmeter; the water tank is provided with an upstream liquid level sensor, and the overflow pipe is also provided with an intelligent monitoring valve; The tailwater control system includes an overflow weir plate arranged at the downstream side of the tailwater pool, and an overflow weir opening and closing mechanism drivingly connected to the overflow weir plate; The depth of the upstream side of the tailwater pool is greater than the depth of the downstream side, and the width of the upstream side of the tailwater pool is smaller than the width of the downstream side; A drain outlet is provided at the downstream side of the tailwater pool, and an overflow weir opening and closing mechanism is provided on the tailwater pool. The overflow weir opening and closing mechanism includes an overflow weir rack provided on the tailwater pool, the overflow weir rack corresponds to the drain outlet, and an overflow weir power assembly system is provided on the overflow weir rack, and the overflow weir power assembly system is drivingly connected to the overflow weir plate movably embedded on the drain outlet; a downstream liquid level sensor is also provided in the tailwater pool; A water inlet is provided on the upstream side of the tailwater pool, and a gate opening and closing mechanism is provided on the tailwater pool, the gate opening and closing mechanism comprises a gate rack corresponding to the water inlet, and a gate power assembly system is provided on the gate rack; the gate power assembly system is drivingly connected to the gate, and the gate is movably embedded in the gate slot in the water inlet and the gate rack; The gate power assembly system is drivingly connected to the intelligent control cabinet I arranged outside the tailwater pool; the gate power assembly system includes a stepper motor arranged on the gate frame, and a reducer drivingly connected to the stepper motor, the reducer is drivingly connected to a wire rope wheel, the wire rope wheel is drivingly wound with a wire rope connected to the gate, and the stepper motor is also connected to an encoder; Or / and, the overflow weir power assembly system is drivingly connected to the intelligent control cabinet II arranged outside the tailwater tank; the overflow weir power assembly system includes a stepper motor arranged on the overflow weir frame, and a reducer drivingly connected to the stepper motor, the reducer is drivingly connected to a wire rope pulley, and the wire rope pulley is drivingly wound with a wire rope connected to the overflow weir plate; and the stepper motor is also connected to an encoder.

2. The multifunctional test system for gate opening and closing according to claim 1 is characterized in that: The flow channel system includes a flow channel connecting the water tank and the tailwater pool, and a gate groove arranged between the flow channel and the tailwater pool; the gate is arranged in the gate groove.

3. The multifunctional test system for gate opening and closing according to claim 2 is characterized in that: The gate control system includes a plurality of gate opening and closing mechanisms corresponding to the gate slots, and the gate opening and closing mechanisms are drivingly connected to the gate movably arranged in the gate slots.

4. A test method for a multifunctional test system for gate opening and closing as claimed in any one of claims 1 to 3, characterized in that: The steps include: Step 1: Before the test, adjust the initial state, adjust the gate to a fixed opening through the gate opening and closing mechanism, the overflow weir plate angle is in the initial state, and the intelligent monitoring valve is initially set to be fully closed; the intelligent water pump unit introduces the water flow into the water tank and then into the tailwater pool through the flow channel system; After the tailwater pool is filled with water, the water flows down to the return water pool through the overflow weir, and the intelligent control cabinet II is adjusted again to adjust the overflow weir plate to a fixed opening through the overflow weir opening and closing mechanism. After the requirements of the upstream and downstream water levels are met, the test data under the initial stable state is recorded after the water flow stabilizes; Step 2: During the test, the upstream water level test requirements are met by adjusting the intelligent monitoring valve; the overflow weir plate is opened to a fixed angle to meet the upstream and downstream water level requirements at the same time; The overflow weir plate angle is adjusted in real time according to the water level value monitored by the downstream liquid level sensor. The intelligent water pump unit adjusts the flow rate and the relative opening of the intelligent monitoring valve in real time according to the water level value of the upstream and downstream liquid levels, and meets the different flow and water level requirements under different working conditions, realizing the linkage and coordinated water diversion of the whole channel. Step three: after the water flow stabilizes, set the monitoring time and flow measurement frequency of the pressure sensors installed at different positions on the gate frame or gate slot, record and store the test data when the gate is used in different states, and test the hydraulic characteristics of the gate's dynamic water opening and closing under different working conditions.

Images