CN113338217A - Multifunctional test system for opening and closing gate - Google Patents
Multifunctional test system for opening and closing gate Download PDFInfo
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- CN113338217A CN113338217A CN202110675739.2A CN202110675739A CN113338217A CN 113338217 A CN113338217 A CN 113338217A CN 202110675739 A CN202110675739 A CN 202110675739A CN 113338217 A CN113338217 A CN 113338217A
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Abstract
本发明涉及一种用于闸门启闭的多功能试验系统，包括供水控制系统，供水控制系统的输水管与水箱连接，且水箱的下游侧通过流道系统与尾水池连接，流道系统与尾水池之间设置有用于通断水路的闸门，闸门与闸门控制系统驱动连接，尾水池的下游设置有与闸门控制系统驱动连接的尾水控制系统；以及分别与供水控制系统、尾水控制系统、闸门控制系统连接的监测系统。本发明提供了一种用于闸门启闭的多功能试验系统，具有检测便捷、适用范围广、应用能力强的性能。
The 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 with a water tank, and the downstream side of the water tank is connected with a tail tank through a flow channel system, which is connected with the tail water tank. A gate for opening and closing the water circuit is arranged between the pools, and the gate is drivingly connected with the gate control system. The downstream of the tailrace pool is provided with a tailwater control system which is drivingly connected with the gate control system; and is connected with the water supply control system, tailwater control system, Monitoring system connected to the gate control system. The invention provides a multifunctional test system for opening and closing the gate, which has the performances of convenient detection, wide application range and strong application ability.
Description
Technical Field
The invention relates to the field of water conservancy, in particular to a multifunctional test system for opening and closing a gate.
Background
The gate is a water retaining structure which can be closed, opened or partially opened and is used for controlling the water flow of an orifice, is an important component of a hydraulic building and mainly has the functions of controlling the water level, adjusting the flow, diffusing flood or delivering water, discharging silt, ice blocks, floaters and the like according to engineering requirements. It can be divided into a working gate, an accident gate and a maintenance gate according to its working property. The accident gate is generally used for closing an opening in flowing water to block water flow when buildings and equipment have faults. The maintenance gate can be used for short-term water retaining when buildings, working gates, mechanical equipment and the like are maintained, and is generally opened and closed under the condition of still water. The plane gate is used as a main application type of an accident gate and an overhaul gate, is closed by flowing water in case of emergency of a water release structure or other facilities, and plays a role in preventing the expansion of accidents, so that the technical feasibility and the safety reliability of the water release structure are directly related.
At present, from the whole development trend of the plane gate at home and abroad, along with the construction of high reservoir dams, the application water head of the plane gate is higher and higher. Under the operating conditions of high water head and high flow velocity, the problems of gate flowing water opening and closing, gate slot cavitation and the like are very outstanding, whether the body type and the hydraulic performance of the gate are good or not, and whether the gate can be effectively opened and closed by flowing water under the condition of high water head are all the problems concerned by gate design and application.
In a prior art flat gate control system, for example, patent application No.: CN 202020321967.0; the patent name: a plane gate system for automatically controlling water level; the plane gate system comprises two gate piers and a plane gate fixed between the two gate piers and sliding up and down along the gate piers, wherein a through hole is formed in the surface of the plane gate, and a flap gate matched with the through hole is hinged to the plane gate. The gate pier is characterized by further comprising a counterweight mechanism which is rotatably arranged on the inner sides of the two gate piers, and the counterweight mechanism is abutted against the side wall of the flap gate. The counterweight mechanism comprises a rotating rod, a counterweight block, a suspension rod and a top rod which are respectively fixed on the counterweight block, and the rotating rod is rotatably arranged on the inner side walls of the two gate piers; two ends of the suspension rod are respectively fixed with the rotating rod and the balancing weight; one end of the ejector rod is fixed at the bottom of the balancing weight, and the other end of the ejector rod is abutted against the side wall of the flap door. The water flow of the through hole is controlled through the action of the balancing weight, and the balancing weight is increased or decreased on the balancing weight hook, so that the purpose of automatically controlling different upstream water levels is realized.
However, in the prior art, the problems that the gate body is subjected to load and changes of water flow state in the process of opening and closing the plane gate by moving water are very complex, and the gate cannot be opened or closed are also common in hydraulic engineering. In the research aiming at the hydrodynamic characteristics of the gate, prototype observation, physical model test and numerical simulation calculation are mainly included. The prototype observation is limited by engineering field conditions, the research cost is relatively high, and the research of gate hydraulics prototype observation is not carried out under general conditions. In the past, because a gate water-moving opening and closing numerical simulation test is not mature, and the accuracy of results cannot meet the engineering requirements easily, a special model test is usually required to research the hydrodynamic load and the opening and closing force of a gate in the design of a high-water-head plane gate in hydraulic engineering, so that a basis is provided for the design of the gate.
Disclosure of Invention
The multifunctional testing system for opening and closing the gate overcomes the defects of the prior art, and has the advantages of convenience in detection, wide application range and strong application capability.
In order to achieve the purpose, the invention adopts the technical scheme that: a multifunctional test system for opening and closing a gate comprises a water supply control system, wherein a water delivery pipe of the water supply control system is connected with a water tank, the downstream side of the water tank is connected with a tail water pool through a runner system, a gate for opening and closing a water path is arranged between the runner system and the tail water pool, the gate is in driving connection with the gate control system, and the downstream of the tail water pool is provided with a tail water control system in driving connection with the gate control system; and the monitoring system is respectively connected with the water supply control system, the tail water control system and the gate control system.
In a preferred embodiment of the invention, the water supply control system comprises an intelligent water pump unit connected with a water tank and a reservoir, the intelligent water pump unit comprises a water pump unit and a control box in driving connection with the water pump unit, the water inlet end of the water pump unit is connected with the reservoir, and the water outlet end of the water pump unit is connected with the water tank through the water conveying pipe; the water tank is also provided with an overflow pipe; an electromagnetic flowmeter is arranged in the water conveying pipe; an upstream liquid level sensor is arranged in the water tank, and an intelligent monitoring valve is further arranged on the overflow pipe.
In a preferred embodiment of the present invention, the runner system includes a runner connecting the water tank and the tailrace pool, and a gate groove disposed between the runner and the tailrace pool; the gate is arranged in the gate slot.
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 in driving connection with the gates movably disposed in the gate slots.
In a preferred embodiment of the invention, the tail water control system comprises an overflow weir plate arranged on the downstream side of the tail water pool, and an overflow weir opening and closing mechanism in driving connection with the overflow weir plate.
In a preferred embodiment of the invention, the depth of the upstream side in the tailrace pool is greater than the depth of the downstream side, and the width of the upstream side of the tailrace pool is less than the width of the downstream side. Furthermore, the tail water tank adopts a structure of a sloping plate sedimentation tank, and can be matched with an overflow weir to improve the uniformity of water flow.
In a preferred embodiment of the invention, a water outlet is arranged at the downstream side of the tail water pool, an overflow weir opening and closing mechanism is arranged on the tail water pool, the overflow weir opening and closing mechanism comprises an overflow weir bent frame arranged on the tail water pool, the overflow weir bent frame corresponds to the water outlet, an overflow weir power assembly system is arranged on the overflow weir bent frame, and the overflow weir power assembly system is in driving connection with the overflow weir plate movably embedded on the water outlet; and a downstream liquid level sensor is also arranged in the tail water pool.
In a preferred embodiment of the invention, a water inlet is arranged at the upstream side of a tail water pool, a gate opening and closing mechanism is arranged on the tail water pool, the gate opening and closing mechanism comprises a gate bent frame corresponding to the water inlet, and a gate power assembly system is arranged on the gate bent frame; the gate power assembly system is in driving connection with the gate, and the gate is movably embedded in a gate slot in the water inlet.
In a preferred embodiment of the invention, the gate power assembly system is in driving connection with an intelligent control cabinet I arranged outside a tail water pool; the power assembly system comprises a stepping motor arranged on the gate bent frame and a speed reducer in driving connection with the stepping motor, the speed reducer is in driving connection with a steel wire rope wheel, a steel wire rope connected with the gate is wound on the steel wire rope wheel in a driving mode, and the stepping motor is further connected with an encoder; or/and the overflow weir power assembly system is in driving connection with an intelligent control cabinet II arranged outside the tail water pool; the overflow weir power assembly system comprises a stepping motor arranged on the overflow weir bent frame and a speed reducer in driving connection with the stepping motor, wherein a steel wire rope wheel is in driving connection with the speed reducer, and a steel wire rope connected with the overflow weir plate is wound on the steel wire rope wheel in a driving manner; and the stepping motor is also connected with an encoder.
Specifically, the monitoring system includes intelligent water pump unit, electromagnetic flowmeter, upper reaches level sensor, intelligent monitoring valve, pressure sensor, low reaches level sensor, intelligent control cabinet I and intelligent control cabinet II.
In a preferred embodiment of the present invention, a method for testing a multifunctional testing system for opening and closing a gate comprises the following steps:
before testing, adjusting an initial state, adjusting a gate to a fixed opening degree through a gate opening and closing mechanism, setting the opening degree of an overflow weir plate to be the initial state, and initially setting an intelligent monitoring valve to be fully closed; the intelligent water pump unit introduces water flow into the water tank and then into the tail water pool through the flow channel system; after being filled with water in the tail water pond, rivers let out to the return water pond through the overflow weir, regulate and control intelligent control cabinet II once more, transfer the overflow weir board to fixed aperture through overflow weir start/stop mechanism, satisfy the requirement of upper reaches water level and low reaches water level after, treat the experimental data under the initial stable state of rivers stable recording.
Step two, during testing, the requirement of an upstream water level test is met by regulating and controlling an intelligent monitoring valve; opening the overflow weir plate to a fixed opening degree, and simultaneously meeting the requirements of upstream and downstream water levels; the opening degree of the overflow weir plate is regulated and controlled in real time according to the water level value monitored by the downstream liquid level sensor, the intelligent water pump unit regulates and controls the flow size and the relative opening degree 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, different flow and different water level requirements under different working conditions are met, and full-canal linkage and cooperative water transfer are achieved.
And step three, after the water flow is stable, setting the monitoring time and the flow measuring frequency of the pressure sensors arranged at different positions on the gate bent frame or the gate slot, recording and storing test data of the gate in use under different states, and testing the hydraulic characteristic rule of the gate for opening and closing the gate by flowing water under different working conditions.
Specifically, in the first step, before the test, the intelligent control cabinet I is regulated, the gate is regulated to a fixed opening degree through a gate opening and closing mechanism, the opening degree of an overflow weir plate is initially set to be in an initial state, and the intelligent monitoring valve is initially set to be fully closed; the intelligent water pump unit is started, water flow enters the water tank through the water pipe through the electromagnetic flowmeter, and the upstream liquid level sensor uploads water level monitoring information to the intelligent water pump unit; water flow enters the tail water pool from the bottom of the water tank through a flow channel, a gate groove and a gate, and meanwhile, a downstream liquid level sensor synchronously uploads water level monitoring information to the intelligent water pump unit; after the tail water pool is filled with water, water flow is discharged to the water return pool through the overflow weir, the intelligent control cabinet II is regulated again, the overflow weir plate is regulated to a fixed opening degree through the overflow weir opening and closing mechanism, after the upstream and downstream water level requirements are met, the flow measuring frequency of the pressure sensor is set after the water flow is stable, and test data are recorded and stored and analyzed;
specifically, in the second step, during the test, the water level data is monitored through the upstream liquid level sensor, and the intelligent monitoring valve is regulated and controlled to meet the requirements of the upstream water level test; monitoring water level data according to a downstream liquid level sensor, opening the overflow weir plate to a fixed opening degree through an overflow weir opening and closing mechanism by regulating an intelligent control cabinet II, and simultaneously meeting the upstream and downstream water level requirements; 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 set angle, so that water flows from the overflow pipe to the water return tank; when the intelligent monitoring valve is in a fully closed state, the upstream liquid level sensor monitors that the water level value is lower than the water level required by the test, the intelligent water pump unit is regulated and controlled, the flow input is increased, and the test requirement is met; the opening degree of the overflow weir plate is regulated and controlled in real time according to the downstream water level value monitored by the downstream liquid level sensor, the flow size and the relative opening degree of the intelligent monitoring valve are regulated and controlled in real time according to the upstream water level value monitored by the upstream liquid level sensor and the downstream water level value monitored by the downstream liquid level sensor by the intelligent water pump unit, under different working conditions, different flow and different water level requirements are met simultaneously, and full channel linkage and cooperative water regulation are achieved.
Specifically, in the third step, after the water flow is stabilized, the monitoring time and the flow measuring frequency of the pressure sensors installed at different positions such as the main beam, the secondary beam, the upstream surface and the back surface of the gate are set, the test data of the gate at different opening degrees, different upstream water levels and different downstream water levels are recorded and stored, and the hydraulic characteristic rule of the gate for starting and stopping the flowing water under different working conditions is tested.
The invention solves the defects existing in the background technology, and has the beneficial effects that:
the multifunctional test system for opening and closing the gate disclosed by the invention has the performances of convenience in detection, wide application range and strong application capability.
1. According to the invention, the plane valve is tested more intuitively by simulating the plane gate water-moving opening and closing system of the hydropower station. The test system adopts a water supply control system, a tail water control system, a gate control system and a monitoring system which are arranged on the water tank and the tail water pool, and can realize monitoring and regulation of the service performance of the plane gate in different working environments.
2. According to the invention, the opening degrees of the gate and the overflow weir plate on the tail water pool are adjusted through the gate control system, the working environment of the plane gate in the hydropower station under different working states is simulated, and the convenience and detection diversity of the performance test of the plane gate in the use process are improved.
3. The invention detects the use parameters and environmental parameters of the corresponding components in the working process through the electromagnetic flowmeter, the upstream liquid level sensor, the intelligent monitoring valve, the pressure sensor and the downstream liquid level sensor in the monitoring system, and is more beneficial to data acquisition and use state monitoring of the components in the working state.
4. The gate opening and closing mechanism has better structural stability, and is more favorable for detecting the working state of the plane gate in the gate opening and closing mechanism. The driving structure of the overflow weir opening and closing mechanism is arranged, so that the lifting operation of the overflow weir plate is more convenient, and the adjustment of the overflow weir plate to the working environment of the simulated plane gate is facilitated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a multifunctional testing system for opening and closing a gate in a preferred embodiment of the invention.
Fig. 2 is a schematic structural view of a water supply control system in a preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a flow channel system in a preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a gate control system in a preferred embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a tail water control system in a preferred embodiment of the present invention.
Fig. 6 is a schematic structural view of a gate in a preferred embodiment of the present invention.
Fig. 7 is a schematic view showing the structure of a gate slot in a preferred embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a gate opening and closing mechanism in a preferred embodiment of the invention.
Fig. 9 is a schematic structural diagram of an overflow weir opening and closing mechanism in a preferred embodiment of the invention.
FIG. 10 is a schematic illustration of a preferred embodiment of the gate powertrain system or weir powertrain system of the present invention.
In the figure: A. a water supply control system, a flow channel system, a gate control system, a tail water control system, a monitoring system, a water pump unit 1, an intelligent water pump unit 2, a water pipe 3, an electromagnetic flowmeter 4, a water tank 5, an upstream liquid level sensor 5, 6, an overflow pipe 7, an intelligent monitoring valve 8, a flow channel 9, a gate slot 10, a gate opening and closing mechanism 11, a gate bent frame 12, a gate power assembly system 13, a gate bent frame base 14, a stepping motor 15, a speed reducer 16, an encoder 17, a crank handle 18, a steel wire rope wheel 19, a gate slot supporting plate 20, a gate slot side plate 21, a gate 22, a main wheel 23, a gate leaf 24, a bottom girder web plate 25, a middle girder two, 26, a panel 27, a middle girder one, 28, a bottom girder flange 29, a bottom girder web plate 30, a bottom girder flange 31, a pressure sensor, 32. the device comprises a downstream liquid level sensor, 33, a tail water tank, 34, intelligent control cabinets I and 35, an overflow weir opening and closing mechanism, 36, an overflow weir bent, 37, an overflow weir plate, 38, an overflow weir bent base, 39 and an intelligent control cabinet II.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
It should be noted that, if directional indications (such as up, down, bottom, top, etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship, motion situation, etc. of each component in a certain posture, and if the certain posture is changed, the directional indications are changed accordingly. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 10, in the embodiment of the present invention, a multifunctional testing system for opening and closing a gate includes a water supply control system a, a water pipe 2 of the water supply control system a is connected to a water tank 4, a downstream side of the water tank 4 is connected to a tail water pool 33 through a flow channel system B, the flow channel system B includes a flow channel 8 connecting the water tank 4 and the tail water pool 33, and a gate slot 9 disposed between the flow channel 8 and the tail water pool 33; a gate 21 is provided in the gate groove 9. Runner system B installs in 4 downstream sides of water tank, mainly be responsible for the connection between 4 and the gate slot 9 of water tank, rivers flow from 4 low reaches side bottoms of water tank, through 8 linkage segments of runner to low reaches gate slot 9, the sill of gate slot 9 is connected with runner system B is smooth-going, the adjustment sets up in the screw of gate slot fagging 19 bottom, control gate slot fagging 19 and gate slot curb plate 20 between the relative position, and then the relative width of adjustment gate slot 9, make the multifunctional test system be applicable to multiple experimental scheme. And a gate 21 for switching on and off the waterway is arranged between the runner system B and the tail water pool 33, and the gate 21 is in driving connection with the gate control system C. The depth of the upstream side in the wake pool 33 is larger than the depth of the downstream side, and the width of the upstream side of the wake pool 33 is smaller than the width of the downstream side. The upstream side of the tail water tank 33 is provided with a water inlet embedded with a door slot 9, and the tail water tank 33 is provided with a gate opening and closing mechanism 10. And a tail water control system D in driving connection with the gate control system C is arranged at the downstream of the tail water pool 33. The gate opening and closing mechanism 10 comprises a gate bent 11 corresponding to the water inlet, the gate bent 11 is provided with a gate opening and closing mechanism 10, the gate opening and closing mechanism 10 is in driving connection with a gate 21, and the gate 21 is movably embedded in a gate slot 9 in the water inlet and the gate bent 11.
The monitoring system E is respectively connected with the water supply control system A, the tail water control system D and the gate control system C; the monitoring system E comprises 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, wherein the electromagnetic flowmeter is connected with the intelligent water pump unit 1 or/and an intelligent control cabinet I34 and an intelligent control cabinet II 39 which are arranged outside the tail water pool 33.
Specifically, the water supply control system A comprises an intelligent water pump unit 1 connected with a water tank 4 and a reservoir, the intelligent water pump unit 1 comprises a water pump unit and a control box in driving connection with the water pump unit, the water inlet end of the water pump unit is connected with the reservoir, and the water outlet end of the water pump unit is connected with the water tank 4 through a water conveying pipe 2; an overflow pipe 6 is also arranged on the water tank 4; an electromagnetic flowmeter 3 is arranged in the water delivery pipe 2; an upstream liquid level sensor 5 is arranged in the water tank 4, and an intelligent monitoring valve 7 is further arranged on the overflow pipe 6. The gate control system C comprises a gate opening and closing mechanism 10 corresponding to the gate slot 9, and the gate opening and closing mechanism 10 is in driving connection with a gate 21 movably arranged in the gate slot 9. The gate opening and closing mechanism 10 comprises a gate 21 power assembly system 12 in driving connection with an intelligent control cabinet I34 arranged outside a tail water tank 33, the power assembly system comprises a stepping motor 14 arranged on a gate bent frame 11 and a speed reducer 15 in driving connection with the stepping motor 14, a steel wire rope wheel 18 is in driving connection with the speed reducer 15, a steel wire rope connected with the gate 21 is wound on the steel wire rope wheel 18 in a driving mode, and the stepping motor 14 is further connected with an encoder 16.
More specifically, an outlet of the intelligent water pump unit 1 is sequentially connected with an electromagnetic flowmeter 3 and a water tank 4 through a water delivery pipe 2. The outlet of the water pipe 2 is fixedly connected with the lower part of one side of the water tank 4, and the electromagnetic flowmeter 3 is arranged in the middle of the water pipe 2 and used for monitoring the real-time water delivery flow and the accumulated flow. 4 inner wall one side fixed mounting upper reaches level sensor 5 of water tank, upper reaches level sensor 5 arranges in 4 interior steady water pipes of water tank in, guarantees the steady monitoring to the water level to upload in real time monitoring water level data information to intelligent water pump unit 1 with regulation and control flow size. The import department of overflow pipe 6 and the opposite side upper portion fixed connection of water tank 4, intelligent monitoring valve 7 is fixed in on overflow pipe 6 and communicates with water tank 4, when the water level can't satisfy experimental demand in water tank 4, through the water level in the relative aperture control water tank 4 of regulation and control intelligent monitoring valve 7, satisfy experimental required water level height, and with 7 apertures of intelligent monitoring valve and overflow flow information upload to intelligent water pump unit 1 with real-time regulation and control flow size.
More specifically, the bottom of the gate bent 11 is welded with a gate bent base 13, and the gate bent base is fixed in concrete through expansion bolts, so that the gate bent base is convenient to disassemble. The power assembly system is fixed at the center of the cross beam of the gate bent frame 11 through bolts, mainly comprises a stepping motor 14 and a motor capable of receiving digital control signals or electric pulse signals and converting the digital control signals or the electric pulse signals into angular displacement or linear displacement; the speed reducer 15 is used for matching rotating speed and transmitting torque, and the safe operation of the gate 21 is ensured; the encoder 16 converts the angular displacement or the linear displacement into an electric signal which can be communicated, transmitted and stored, and can intelligently regulate and control the relative opening degree of the gate 21; the hand crank 17 is used for manually controlling the opening and closing of the gate 21; the power assembly system is fixedly connected with the gate 21 through the wire rope pulley 18, so that the opening degree of the gate 21 can be conveniently regulated and controlled. The main wheels 22 are disposed at both sides of the gate 21 to prevent the gate 21 from colliding, skewing or jamming in front and rear directions when it is lifted and lowered, and to ensure smooth movement of the gate 21 along the gate rail. The lifting lug on the gate blade 23 of the gate 21 is positioned at the lifting point of the gate 21, is connected with the lifting appliance of the gate power assembly system 12 through a steel wire rope, and bears the whole opening and closing force of the gate 21. The bottom main beam web 24 of the door leaf 23 of the gate 21 is connected with the middle longitudinal beam 25 to form a whole, the bottom main beam web is not fixedly connected with the panel 26, the bottom main beam is in bolted connection through the guide grooves of the middle longitudinal beam 27 and the middle longitudinal beam 25, the height of the bottom main beam can be regulated and controlled steplessly by adjusting the position of the bolt, and the gate is suitable for the test research of the hydraulic characteristics of the plane gate 21 under different working conditions. The bottom main beam flange 28 is mounted on the bottom main beam web 24 through a screw, and the position of the screw on the bottom main beam web 24 is adjusted to change the relative height of the bottom main beam flange 28, so that different door bottom angles can be adjusted conveniently. The bottom longitudinal beam web 29 and the bottom longitudinal beam flange 30 can be fixedly installed through screws, and the installation angle of the bottom longitudinal beam flange 30 is adjusted at different angles according to the relative position relationship between the bottom longitudinal beam web 24 and the bottom longitudinal beam flange 28. But not limited thereto, in other embodiments, the structure and mounting structure of the gate 21 may be adjusted according to the specific structure of the plane gate to be tested. Pressure sensor 31 fixed mounting can change pressure sensor 31 current surveying frequency under different operating modes according to the experimental demand in different positions such as the girder of gate 21, secondary beam, upstream surface, the surface of a water-backed, richen experimental data when improving experimental reliability. The downstream liquid level sensor 32 is fixed in a water stabilizing pipe on the inner wall of a tail water pool 33 beside the gate 21, monitors downstream water level information of the gate 21 under different opening degrees and different flow conditions, and uploads the monitored water level information data to the intelligent water pump unit 1 in real time for regulating and controlling the flow in real time; the intelligent control cabinet I34 is fixedly installed on one side of the outer wall of the tail water pool 33, and the opening degree and the water level information of the gate 21 are regulated and controlled in real time through the opening degree information of the gate 21 and the upstream and downstream water level information of the display screen.
Specifically, the tail water control system D includes an overflow weir 37 disposed on the downstream side of the tail water pool 33, and an overflow weir opening/closing mechanism 35 drivingly connected to the overflow weir 37. A water outlet is arranged at the downstream side of the tail water tank 33, an overflow weir opening and closing mechanism 35 corresponding to the water outlet is arranged on the tail water tank 33, the overflow weir opening and closing mechanism 35 comprises an overflow weir bent 36 arranged on the tail water tank 33, an overflow weir opening and closing mechanism 35 is arranged on the overflow weir bent 36, and the overflow weir opening and closing mechanism 35 is in driving connection with an overflow weir plate 37 movably embedded on the water outlet and the overflow weir bent 36; a downstream level sensor 32 is also provided in the tailrace pool 33. The overflow weir opening and closing mechanism 35 comprises an overflow weir power assembly system in driving connection with an intelligent control cabinet II 39 arranged outside the tail water pool 33; the overflow weir power assembly system comprises a stepping motor 14 arranged on an overflow weir discharge frame 36 and a speed reducer 15 in driving connection with the stepping motor 14, wherein a steel wire rope wheel 18 is in driving connection with the speed reducer 15, and a steel wire rope connected with an overflow weir plate 37 is wound on the steel wire rope wheel 18 in driving connection; and the stepper motor 14 is also connected to an encoder 16.
More specifically, the weir gate 35 is fixed in the concrete on the top of the weir by expansion bolts, and the structure thereof comprises a weir bent 36 and a weir power assembly system. The weir rows 36 are fixedly mounted in the concrete at the top of the weir by means of weir row bases 38 welded at the bottom. The components of the weir gate 35 are assembled and installed in the same manner as the gate 10 of the gate control system C. The steel wire rope of the overflow weir opening and closing mechanism 35 is fixedly connected with the overflow weir plate 37, and a plurality of overflow holes are arranged on the overflow weir plate 37, so that water flow in the tail water tank 33 can flow through stably. The intelligent control cabinet II 39 and the intelligent control cabinet I34 are fixedly installed on one side of the outer wall of the tail water pool 33 side by side, the overflow weir plate 37 regulates and controls different angles through the intelligent control cabinet II 39 according to water level information monitored by the downstream liquid level sensor 32 so as to meet the requirement of the water level of the tail water pool 33, and the tail water control system D and the gate control system C are combined in parallel to form a full-canal linkage control system to coordinate water supply.
Example two
In the first embodiment, a test method of a multifunctional test system for opening and closing a gate 21 includes the following steps:
firstly, before a test, adjusting an initial state, adjusting a gate 21 to a fixed opening degree through a gate opening and closing mechanism 10, setting the opening degree of an overflow weir plate 37 to be the initial state, and initially setting an intelligent monitoring valve 7 to be fully closed; the intelligent water pump unit 1 introduces water flow into the water tank 4 and then introduces the water flow into the tail water pool 33 through the flow channel system B; after the tailrace pond 33 is filled with water, the water flows through the overflow weir and then is discharged to the water return pond, the intelligent control cabinet II 39 is regulated and controlled again, the overflow weir plate 37 is regulated to a fixed opening degree through the overflow weir opening and closing mechanism 35, and after the requirements of the upstream water level and the downstream water level are met, the test data under the initial stable state of the water flow stable record are waited to be recorded.
Specifically, before the test, the intelligent control cabinet I34 is regulated, the gate 21 is regulated to a fixed opening degree through the gate opening and closing mechanism 10, the opening degree of the overflow weir plate 37 is set to be in an initial state, and the intelligent monitoring valve 7 is initially set to be fully closed; the intelligent water pump unit 1 is started, water flow enters the water tank 4 through the water delivery pipe 2 and the electromagnetic flow meter 3, and the upstream liquid level sensor 5 uploads water level monitoring information to the intelligent water pump unit 1; water flow enters the tail water pool 33 from the bottom of the water tank 4 through the flow channel 8, the gate slot 9 and the gate 21, and meanwhile, the downstream liquid level sensor 32 synchronously uploads water level monitoring information to the intelligent water pump unit 1; after being filled with water in the tail water pond 33, the water flow is discharged to the return water pond through the overflow weir, regulates and controls II 39 of the intelligent control cabinet once more, transfers the overflow weir plate 37 to fixed aperture through the overflow weir start-stop mechanism 35, after satisfying the upstream and downstream water level requirement, treats that the water flow is stable, sets for pressure sensor 31 current measuring frequency, records test data and carries out storage analysis.
Step two, during testing, the requirement of an upstream water level test is met by regulating and controlling the intelligent monitoring valve 7; the overflow weir plate 37 is opened to a fixed opening degree, and the requirements of upstream and downstream water levels are met; the opening of the overflow weir plate 37 is regulated and controlled in real time according to the water level value monitored by the downstream liquid level sensor 32, the flow size and the relative opening of the intelligent monitoring valve 7 are regulated and controlled in real time according to the water level value of the upstream liquid level and the water level value of the downstream liquid level by the intelligent water pump unit 1, different flow and different water level requirements under different working conditions are met, and full-channel linkage and cooperative water transfer are achieved.
Specifically, in the second step, during the test, the water level data is monitored through the upstream liquid level sensor 5, and the intelligent monitoring valve 7 is regulated and controlled to meet the requirements of the upstream water level test; 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 degree through the overflow weir opening and closing mechanism 35 by regulating the intelligent control cabinet II 39, and meanwhile, the upstream and downstream water level requirements are met; 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 water level required by the test, the intelligent monitoring valve 7 is opened to a certain set opening degree, so that water flows from the overflow pipe 6 to the water return tank; when the intelligent monitoring valve 7 is in a fully closed state, the upstream liquid level sensor 5 monitors that the water level value is lower than the water level required by the test, regulates and controls the intelligent water pump unit 1, increases the flow input, and meets the test requirement; the opening of the overflow weir plate 37 is regulated and controlled in real time according to the water level value monitored by the downstream liquid level sensor 32, the flow size and the relative opening of the intelligent monitoring valve 7 are regulated and controlled 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 by the intelligent water pump unit 1, under different working conditions, different flow and different water level requirements are met simultaneously, and full-channel linkage and cooperative water transfer are achieved.
And step three, after the water flow is stable, setting the monitoring time and the flow measuring frequency of the pressure sensors 31 arranged at different positions on the gate bent 11 or the gate slot 9, recording and storing test data of the gate 21 in use under different states, and testing the hydraulic characteristic rule of the gate 21 for opening and closing the running water under different working conditions.
Specifically, in the third step, after the water flow is stabilized, the monitoring time and the flow measuring frequency of the pressure sensors 31 installed at different positions of the main beam, the secondary beam, the upstream surface, the back surface and the like of the gate 21 are set, the test data of the gate 21 at different opening degrees, different upstream water levels and different downstream water levels are recorded and stored, and the hydraulic characteristic rule of the gate 21 for starting and stopping the flowing water under different working conditions is tested.
The working principle is as follows:
as shown in fig. 1 to 10, the multifunctional test system for opening and closing the gate 21 is a multifunctional and multidimensional hydropower station test system for opening and closing the plane gate 21 by moving water, which is formed by performing test tests in various aspects such as different specifications and different working conditions on the basis of research on a moving water opening and closing test of a traditional plane gate 21.
Before the test, the gate 21 is adjusted to a fixed opening degree through the gate opening and closing mechanism 10 by adjusting the initial state, the opening degree of the overflow weir plate 37 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 water flow into the water tank 4 and then introduces the water flow into the tail water pool 33 through the flow channel system B; after the tailrace pool 33 is filled with water, the water flows through the overflow weir and then is discharged to the water return pool, the intelligent control cabinet II 39 is regulated and controlled again, and the overflow weir plate 37 is regulated to a fixed opening degree through the overflow weir opening and closing mechanism 35. The opening degree of the overflow weir plate 37 comprises a waterway blocking height opened by a relative lifting height between the top of the overflow weir plate 37 and the bottom of the tail water pool 33 when the overflow weir plate 37 is lifted longitudinally, or/and a waterway blocking angle formed by an angle of swinging and opening of the overflow weir plate 37 relative to the tail water pool 33. And after the requirements of the upstream water level and the downstream water level are met, recording the test data in the initial stable state when the water flow is stable. During testing, the requirement of an upstream water level test is met by regulating and controlling the intelligent monitoring valve 7; the overflow weir plate 37 is opened to a fixed opening degree, and the requirements of upstream and downstream water levels are met; the opening of the overflow weir plate 37 is regulated and controlled in real time according to the water level value monitored by the downstream liquid level sensor 32, the flow size and the relative opening of the intelligent monitoring valve 7 are regulated and controlled in real time according to the water level value of the upstream liquid level and the water level value of the downstream liquid level by the intelligent water pump unit 1, different flow and different water level requirements under different working conditions are met, and full-channel linkage and cooperative water transfer are achieved. After the water flow is stable, the monitoring time and the flow measuring frequency of the pressure sensors 31 arranged at different positions on the gate bent 11 or the gate slot 9 are set, the test data of the gate 21 in use under different states are recorded and stored, and the hydraulic characteristic rule of the gate 21 for opening and closing the flowing water under different working conditions is tested.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
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| CN114108543A (en) * | 2021-11-29 | 2022-03-01 | 郑州大学 | Hydraulic gate and hoist fault injection device, system and method |
| CN114428156A (en) * | 2021-12-21 | 2022-05-03 | 北京北华中清环境工程技术有限公司 | Water outlet management and control system |
| CN114993648A (en) * | 2022-05-27 | 2022-09-02 | 长江三峡通航管理局 | Multi-load miter gate fatigue damage test bed and method |
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| CN113338217B (en) | 2024-12-27 |
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