Hydraulic control system of river water conservancy gate

Abstract

The utility model relates to the technical field of hydraulic pressure, and discloses a hydraulic control system of a river water conservancy gate. When working is started, the hydraulic oil tank provides hydraulic oil through the double pump system, and the hydraulic motor provides power for the pump; then the double pump system is started in a no-load mode, the electromagnetic valve is powered on after about 5 seconds of delay, and the system builds pressure. After the oil outlet electromagnetic valve is electrified, the flow of hydraulic oil is adjusted by the adjusting valve and then enters the hydraulic oil cylinder, and the gate ascends; when the water conservancy gate is lifted, the hydraulic pump motor set is started in a no-load mode, the time is delayed for about 5 seconds, the electromagnetic valve of the oil inlet pipeline is powered on, and the system builds pressure; after the flow of the hydraulic oil is adjusted through the oil inlet speed adjusting valve, the reversing electromagnetic valve is switched to an oil inlet mode, the hydraulic oil enters the first oil way from the oil inlet pipeline, passes through the oil inlet speed adjusting valve and the oil inlet one-way valve and enters a rodless cavity of the hydraulic oil cylinder, and the hydraulic oil cylinder pushes the piston rod to drive the water conservancy gate to rise.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic technology field, specifically, relate to a hydraulic control system of river water conservancy gate. BACKGROUND

[0002] With the continuous acceleration of global urbanization process and the rapid development of social infrastructure construction, water conservancy project plays an important role in flood control, drought prevention, water resources allocation and power generation; as the core component of water conservancy, the normal operation of water conservancy gate is directly related to the stability and efficiency of the whole water conservancy system. In water conservancy, the number of large water conservancy gate usually reaches dozens or even more; these gates are huge and heavy, and their opening and closing need to rely on reliable and efficient hydraulic drive system; hydraulic drive technology is widely used in the driving system of river water conservancy gate because of its advantages of large output force, stable action and strong controllability.

[0003] The gate drive cylinder hydraulic system needs to provide a large driving force for the water conservancy gate, although the hydraulic drive system has superior performance, but in the actual operation of the water conservancy gate, it also faces some challenges, if the hydraulic control system cannot provide enough driving force, it is difficult to overcome the combined action of the weight of the gate and the water pressure, the gate will not be able to open and close normally, affecting the overall operation of the water conservancy.

[0004] For the gate drive cylinder hydraulic system, the industry has carried out relevant research and design, such as an automatic balance hydraulic lifting bridge (CN113622285A), when in use, the system adjusts the pressure difference between the hydraulic cylinders through the automatic balance mechanism, realizes the uniform distribution of load in the multi-cylinder system, and avoids the inclination, slow action or instability of the equipment caused by uneven load; in the hydraulic control system of water conservancy gate, multiple drive cylinders usually need to work together to complete the opening and closing operation of the gate.

[0005] Because the weight and water pressure of the gate may be unevenly distributed, if the output pressure of the hydraulic cylinder is inconsistent, it will cause uneven force on the gate, which may cause the gate to be stuck, action deviation or even equipment damage; for example, in the operation of the hydraulic control system, if the load suddenly increases or the pressure provided by the hydraulic pump is too high, it may cause overpressure damage of the oil cylinder, pipeline and pump station; it is necessary to introduce automatic balance hydraulic technology, which provides appropriate driving force for the hydraulic control system according to the load (weight and water pressure) of the gate. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model provides a hydraulic control system of river water conservancy gate.

[0007] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0008] A hydraulic control system of a river water conservancy gate, comprising a hydraulic oil tank, a balance hydraulic module, a first oil way, a second oil way and a hydraulic oil cylinder; the hydraulic oil tank is connected with the hydraulic oil cylinder through an oil inlet pipeline and the first oil way, the hydraulic oil cylinder is connected and drives the water conservancy gate to lift, the hydraulic oil cylinder is also connected with the hydraulic oil tank through an oil outlet pipeline and the second oil way, for driving the water conservancy gate to descend;

[0009] The oil inlet pipeline and the oil outlet pipeline are connected with the first oil way through a reversing electromagnetic valve, for controlling the hydraulic oil of the hydraulic oil cylinder to enter or exit the hydraulic oil tank; the oil outlet pipeline is also connected with the second oil way through a check valve, for controlling the hydraulic oil of the hydraulic oil cylinder to enter the hydraulic oil tank.

[0010] Further, the first oil way is also provided with an oil inlet speed regulating valve and an oil inlet check valve, and the reversing electromagnetic valve is connected with the hydraulic oil cylinder through the oil inlet speed regulating valve and the oil inlet check valve of the first oil way.

[0011] Further, the first oil way is connected with a rodless cavity of the hydraulic oil cylinder, and a piston rod of the hydraulic oil cylinder is connected and drives the water conservancy gate to lift and descend.

[0012] Further, the second oil way is also provided with an oil outlet speed regulating valve, and the oil outlet pipeline is connected with the rodless cavity of the hydraulic oil cylinder through the check valve and the oil outlet speed regulating valve, for controlling the hydraulic oil of the hydraulic oil cylinder to enter the hydraulic oil tank.

[0013] Preferably, the oil inlet pipeline is also connected with a pressure sensor

[0014] Further, the balance hydraulic module comprises an electromagnetic overflow valve and a balance electromagnetic valve, the oil inlet pipeline is communicated with the oil outlet pipeline through the electromagnetic overflow valve and the balance electromagnetic valve, and a high-pressure outlet of the electromagnetic overflow valve is also connected with the oil outlet pipeline.

[0015] Preferably, the oil inlet pipeline is also provided with an oil outlet speed regulating valve.

[0016] Further, the oil inlet pipeline is connected with the hydraulic oil tank through a duplex pump system; the duplex pump system comprises a first hydraulic pump and a second hydraulic pump; the first hydraulic pump and the second hydraulic pump are connected in parallel.

[0017] Further, the duplex pump system further comprises a hydraulic motor, and the hydraulic motor is electrically connected with the first hydraulic pump and the second hydraulic pump.

[0018] Further, the oil outlet pipeline is also provided with an oil return filter.

[0019] Further, the oil inlet pipeline and the second oil way are respectively connected with a pressure detection table.

[0020] Further, the first oil way and the second oil way are provided with a plurality of, the hydraulic oil tank is connected with a plurality of first oil ways respectively through oil inlet pipeline, and is connected with a plurality of hydraulic oil tanks driven by water conservancy gate through a plurality of hydraulic oil tank connection oil outlet pipeline.

[0021] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are:

[0022] ①The system designs an oil inlet speed regulating valve and an oil outlet speed regulating valve to control the hydraulic oil inlet and outlet speed of the hydraulic oil cylinder, ensures the stability and non-impact of the lifting process of the water conservancy gate, and adapts to various working condition requirements;The balance hydraulic module contains an electromagnetic overflow valve and a balance electromagnetic valve, which can balance the pressure of the oil inlet and outlet pipelines when the hydraulic control system is running, avoid the performance decline caused by pressure fluctuation of the system, and ensure the stability of the water conservancy gate operation.

[0023] ②The application of the check valve ensures the one-way flow of the hydraulic oil, prevents equipment damage caused by backflow of the hydraulic oil, and is provided with a pressure sensor and a pressure detection table, so that the system can monitor the hydraulic pressure of the key position in real time, facilitate fault diagnosis and prevention, and improve the overall safety.

[0024] ③The system adopts a duplex pump system, wherein the first hydraulic pump and the second hydraulic pump are designed in parallel, the output flow can be flexibly adjusted according to the load demand, unnecessary energy consumption is reduced, the overflow function of the balance hydraulic module reduces energy waste, and the working efficiency of the system is optimized through dynamic pressure adjustment.

[0025] ④The first oil way and the second oil way realize precise switching of the hydraulic oil cylinder oil inlet and outlet through the control of the reversing electromagnetic valve. Through the operation of the reversing electromagnetic valve, the system can quickly respond to the lifting demand, so as to precisely control the action of the water conservancy gate;The addition of the reversing electromagnetic valve significantly improves the flexibility of system operation, makes the work of the hydraulic oil cylinder more stable, reduces the pressure fluctuation of the hydraulic control system in the switching process, and ensures the smoothness of the gate operation process. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed in the implementation manner will be briefly introduced below, and obviously, the drawings in the following description are only some implementation manners of the utility model, and other drawings can be obtained by those skilled in the art without creating labor.

[0027] Figure 1 is a connection diagram of the hydraulic control system of the river water conservancy gate;

[0028] Figure 2 is a connection diagram of the balance hydraulic module;

[0029] Figure 3 is a connection diagram of the first oil circuit and the second oil circuit;

[0030] Figure 4 is a connection diagram of the duplex pump system;

[0031] Figure 5 is a connection diagram of the first oil circuit;

[0032] Figure 6 is a connection diagram of the second oil circuit;

[0033] Figure 7 is a connection diagram of the balanced hydraulic module in high pressure power overflow;

[0034] Figure 8 is a connection diagram of the balanced hydraulic module in high pressure power loss overflow.

[0035] In the drawings, the reference signs are as follows:

[0036] 1, hydraulic oil tank; 2, balanced hydraulic module; 201, electromagnetic overflow valve; 202, balanced electromagnetic valve; 3, first oil circuit; 4, second oil circuit; 5, hydraulic cylinder; 6, oil inlet pipeline; 7, oil outlet pipeline; 8, reversing electromagnetic valve; 9, check valve; 10, oil inlet speed regulating valve; 11, oil inlet check valve; 12, oil outlet speed regulating valve; 13, duplex pump system; 1301, first hydraulic pump; 1302, second hydraulic pump; 1303, hydraulic motor; 14, oil return filter; 15, pressure detection table. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] Example 1

[0040] like Figures 1-8 As shown, this embodiment discloses a hydraulic control system for a river water conservancy gate, including a hydraulic oil tank 1, a balancing hydraulic module 2, a first oil circuit 3, a second oil circuit 4, and a hydraulic cylinder 5; the hydraulic oil tank 1 is connected to the hydraulic cylinder 5 through an oil inlet pipe 6 and the first oil circuit 3, and the hydraulic cylinder 5 is connected to drive the water conservancy gate to lift; the hydraulic cylinder 5 is also connected to the hydraulic oil tank 1 through an oil outlet pipe 7 and the second oil circuit 4, and is used to drive the water conservancy gate to lower.

[0041] Both the inlet pipe 6 and the outlet pipe 7 are connected to the first oil circuit 3 via a reversing solenoid valve 8, which is used to control the hydraulic oil of the hydraulic cylinder 5 entering and exiting the hydraulic oil tank 1; the outlet pipe 7 is also connected to the second oil circuit 4 via a check valve 9, which is used to control the hydraulic oil of the hydraulic cylinder 5 entering the hydraulic oil tank 1.

[0042] When the system starts working, the hydraulic oil tank 1 supplies hydraulic oil through the dual pump system 13. The first hydraulic pump 1301 and the second hydraulic pump 1302 are connected in parallel, and the hydraulic motor 1303 provides power to the pumps. The oil inlet pipe 6 monitors the pressure through the pressure gauge 15 to ensure that the system is ready.

[0043] Then, the dual pump system 13 is started under no-load. After a delay of about 5 seconds, the solenoid valve 9 is energized, and the system pressure is built up. After the oil outlet solenoid valve 12 is energized, the hydraulic oil enters the hydraulic cylinder after the flow rate is regulated by the regulating valve, and the gate rises.

[0044] When the water gate is lifted: the empty load starts the hydraulic pump motor set, delays for about 5 seconds, the electromagnetic valve of the oil inlet pipeline 6 is electrified, the system builds pressure; then the hydraulic oil is adjusted in flow by the oil inlet speed regulating valve 10, the reversing electromagnetic valve 8 is switched to the oil inlet mode, the hydraulic oil enters the first oil way 3 from the oil inlet pipeline 6, passes through the oil inlet speed regulating valve 10 and the oil inlet check valve 11, enters the rodless cavity of the hydraulic oil cylinder 5, the hydraulic oil cylinder 5 drives the piston rod to lift the water gate;

[0045] When the water gate is lowered: the reversing electromagnetic valve 8 is switched to the oil outlet mode, the hydraulic oil in the rodless cavity of the hydraulic oil cylinder 5 is discharged through the oil outlet pipeline 7, passes through the check valve 9 and the oil outlet speed regulating valve 12, and flows back to the hydraulic oil tank 1, and the water gate is lowered by gravity;

[0046] The balance hydraulic module 2 adjusts the oil way pressure through the electromagnetic overflow valve 201 to avoid hydraulic impact in the lowering process.

[0047] Specifically, the balance hydraulic module 2 adjusts the oil way pressure through the overflow and pressure to ensure the stable operation of the system under high pressure or load change; the design of multiple oil ways enables the system to control multiple hydraulic oil cylinders 5 at the same time, meeting the use requirements of different scale gates.

[0048] As a specific embodiment, the first oil way 3 is further provided with the oil inlet speed regulating valve 10 and the oil inlet check valve 11, and the reversing electromagnetic valve 8 is connected to the hydraulic oil cylinder 5 through the oil inlet speed regulating valve 10 and the oil inlet check valve 11 of the first oil way 3.

[0049] When the water gate is lifted: the hydraulic oil enters the first oil way 3 from the oil inlet pipeline 6, then the reversing electromagnetic valve 8 is electrified to conduct the oil inlet pipeline 6 and the first oil way 3, so that the hydraulic oil is adjusted by the oil inlet speed regulating valve 10 and the oil inlet check valve 11 and then enters the rodless cavity of the hydraulic oil cylinder 5, and the hydraulic oil cylinder 5 drives the piston rod to lift the water gate;

[0050] When the water gate is lowered: the reversing electromagnetic valve 8 is deenergized to conduct the oil outlet pipeline 7 and the first oil way 3, the hydraulic oil in the hydraulic oil cylinder 5 enters the first oil way 3 and the second oil way 4 due to the lowering of the water gate by gravity, the hydraulic oil of the first oil way 3 enters the oil outlet pipeline 7 through the reversing electromagnetic valve 8 and is discharged into the hydraulic oil tank 1, and the hydraulic oil of the second oil way 4 directly enters the oil outlet pipeline 7 and is discharged into the hydraulic oil tank 1.

[0051] Specifically, when the water gate is lifted, the oil inlet speed regulating valve 10 realizes the adjustable control of the hydraulic oil flow and flow rate, so that the speed of the water gate can be adjusted according to the actual demand during lifting, thereby avoiding the adverse effects caused by too fast or too slow speed on the system; the oil inlet check valve 11 can prevent the backflow of the hydraulic oil to ensure the stability of the system during lifting.

[0052] Specifically, the fast switching of the reversing electromagnetic valve 8 enables the system to efficiently complete the conversion of hydraulic oil in and out, reducing energy loss in the switching process.

[0053] As a specific embodiment, the first oil way 3 is connected to the rodless cavity of the hydraulic cylinder 5, and the piston rod of the hydraulic cylinder 5 is connected to and drives the water gate to rise.

[0054] Specifically, the first oil way 3 is directly connected to the rodless cavity of the hydraulic cylinder 5, and the hydraulic oil acts on the rodless end of the piston to provide strong thrust and realize efficient lifting of the water gate; the mechanical connection structure of the piston rod and the water gate is simple and reliable, ensuring the synchronization of the action.

[0055] The rodless cavity of the hydraulic cylinder 5 has a large force area and can output high thrust at low pressure, reducing the energy consumption of the system; the action is completed by the natural return of the hydraulic cylinder 5 and the action of gravity when the gate is lowered, further reducing energy consumption.

[0056] As a specific embodiment, the second oil way 4 is also provided with an oil outlet speed regulating valve 12, and the oil outlet pipeline 7 is connected to the rodless cavity of the hydraulic cylinder 5 through the check valve 9 and the oil outlet speed regulating valve 12, for controlling the hydraulic oil of the hydraulic cylinder 5 to enter the hydraulic oil tank 1.

[0057] Specifically, the oil outlet speed regulating valve 12 effectively adjusts the outflow speed of the hydraulic oil, so that the rodless cavity of the hydraulic cylinder 5 maintains controlled oil discharge when the gate is lowered, ensuring smooth descent of the gate without impact; by adjusting the oil outlet speed regulating valve 12, speed control of different size gates can be realized, adapting to various working conditions; the use of the oil outlet speed regulating valve 12 in cooperation with the balance hydraulic module 2 can alleviate the pressure fluctuation of the hydraulic cylinder 5 due to load changes during operation.

[0058] Specifically, the application of the check valve 9 in the system ensures one-way flow of the hydraulic oil, avoiding damage to the hydraulic cylinder 5 and the hydraulic control system due to reverse flow; in an emergency, the check valve can quickly lock the oil way, improving the safety of the system.

[0059] As a specific embodiment, the balance hydraulic module 2 includes an electromagnetic overflow valve 201 and a balance electromagnetic valve 202, and the oil inlet pipeline 6 is connected to the oil outlet pipeline 7 through the electromagnetic overflow valve 201 and the balance electromagnetic valve 202, and the high-pressure outlet of the electromagnetic overflow valve 201 is also connected to the oil outlet pipeline 7.

[0060] Specifically, the balance hydraulic module 2 dynamically adjusts the pressure of the oil inlet and outlet pipelines through the linkage action of the electromagnetic overflow valve 201 and the balance electromagnetic valve 202, ensuring smooth operation of the system under different working conditions; during the lifting and lowering of the gate, real-time adjustment of the pressure significantly reduces hydraulic impact and improves the smoothness of the action.

[0061] The high-pressure outlet of the electromagnetic overflow valve 201 is directly connected to the oil outlet pipeline 7, which rapidly releases pressure when the pressure is too high, effectively protecting the hydraulic pump, hydraulic cylinder 5 and other components from overload pressure.

[0062] As a specific embodiment, the oil inlet pipeline 6 is connected to the hydraulic oil tank 1 through a duplex pump system 13; the duplex pump system 13 includes a first hydraulic pump 1301 and a second hydraulic pump 1302; the first hydraulic pump 1301 and the second hydraulic pump 1302 are connected in parallel.

[0063] Specifically, the two hydraulic pumps in the duplex pump system 13 are connected in parallel, and can work together to provide sufficient hydraulic oil to the system quickly when high flow is needed, meeting the demand for high load; in a low load state, only one hydraulic pump is used, avoiding energy waste caused by simultaneous operation of double pumps, and improving the energy utilization rate of the system.

[0064] As a specific embodiment, the duplex pump system 13 further includes a hydraulic motor 1303, which is electrically connected to the first hydraulic pump 1301 and the second hydraulic pump 1302.

[0065] Specifically, the hydraulic motor 1303 can intelligently distribute power resources according to actual working conditions, and drive one or two hydraulic pumps only when needed, optimizing energy utilization; in a low load state, single-pump operation mode is energy-saving and environmentally friendly; in a high load state, double-pump cooperative mode provides sufficient power to ensure efficient operation of the system.

[0066] As a specific embodiment, the oil outlet pipeline 7 is further provided with an oil return filter 14.

[0067] Specifically, the oil return filter 14 effectively intercepts impurities in the hydraulic oil, including particulate matter, metal debris and contaminants, ensuring the cleanliness of the oil in the hydraulic oil tank 1.

[0068] Clean hydraulic oil prolongs the service life of hydraulic pumps, oil cylinders and pipelines, and reduces wear and failure caused by oil contamination.

[0069] As a specific embodiment, the oil inlet pipeline 6 and the second oil circuit 4 are respectively connected with pressure detection tables 15.

[0070] Specifically, the oil inlet pipeline 6 and the second oil circuit 4 are respectively provided with pressure detection tables 15, which realize real-time monitoring of the inlet and return oil pressure of the system; when the system pressure is abnormal, the pressure detection table 15 can quickly feedback information, avoiding equipment damage or safety accidents caused by out-of-control pressure.

[0071] Example 2

[0072] As Figures 1-8As shown, the embodiment discloses a hydraulic control system for river water conservancy gate, which comprises a hydraulic oil tank 1, a balance hydraulic module 2, a first oil way 3, a second oil way 4 and a hydraulic oil cylinder 5; the hydraulic oil tank 1 is connected with the hydraulic oil cylinder 5 through an oil inlet pipeline 6 and the first oil way 3, the hydraulic oil cylinder 5 is connected and drives the water conservancy gate to lift, and the hydraulic oil cylinder 5 is also connected with the hydraulic oil tank 1 through an oil outlet pipeline 7 and the second oil way 4, which is used to drive the water conservancy gate to descend;

[0073] The oil inlet pipeline 6 and the oil outlet pipeline 7 are connected with the first oil way 3 through a reversing electromagnetic valve 8, which is used to control the hydraulic oil of the hydraulic oil cylinder 5 to enter or exit the hydraulic oil tank 1; the oil outlet pipeline 7 is also connected with the second oil way 4 through a check valve 9, which is used to control the hydraulic oil of the hydraulic oil cylinder 5 to enter the hydraulic oil tank 1.

[0074] As a specific embodiment, the first oil way 3 and the second oil way 4 are provided with a plurality of oil ways, the hydraulic oil tank 1 is connected with the plurality of first oil ways 3 through the oil inlet pipeline 6, and a plurality of hydraulic oil tanks 1 are connected and driven at the water conservancy gate, and the plurality of hydraulic oil tanks 1 are connected with the oil outlet pipeline 7 through the plurality of second oil ways 4.

[0075] When the gate is lifted: the hydraulic oil tank 1 supplies oil to the first oil way 3 through the oil inlet pipeline 6, and the hydraulic oil enters the rodless cavity of the plurality of hydraulic oil cylinders 5; the plurality of hydraulic oil cylinders 5 drive the plurality of water conservancy gates to rise respectively, and the oil supply pressure of each oil cylinder is adjusted through the independent first oil way 3, so as to ensure that each gate moves synchronously or step by step according to the demand;

[0076] When the gate is lowered: the reversing electromagnetic valve 8 is switched to the oil outlet mode, the hydraulic oil in the rodless cavity of the hydraulic oil cylinder 5 flows back to the hydraulic oil tank 1 through the second oil way 4, and then flows back to the main oil tank through the oil outlet pipeline 7. Each second oil way 4 is responsible for the oil return process of the corresponding hydraulic oil cylinder, so as to ensure that the oil return path does not interfere with the work of other oil cylinders.

[0077] Specifically, through the independent connection design of the plurality of hydraulic oil tanks 1 and the plurality of first oil ways 3, each hydraulic oil cylinder 5 can independently supply oil according to the demand of the water conservancy gate connected thereto, support synchronous or step action; the system can be flexibly adapted to different scales and different load water conservancy gate scenes, and the system applicability is enhanced.

[0078] The balance hydraulic module 2 dynamically adjusts the pressure balance between the plurality of oil ways, so as to ensure that each hydraulic oil cylinder 5 is uniformly stressed, and to avoid the out-of-sync movement or system vibration caused by uneven pressure; the multi-point pressure monitoring feeds back the pressure data in real time through the pressure detection table 15, so as to find and solve abnormal problems in time, and to ensure the stable operation of the system.

[0079] Embodiment 3

[0080] As Figures 1-8As shown, the embodiment discloses a hydraulic control system of a river water conservancy gate, comprising a hydraulic oil tank 1, a balance hydraulic module 2, a first oil way 3, a second oil way 4 and a hydraulic oil cylinder 5; the hydraulic oil tank 1 is connected with the hydraulic oil cylinder 5 through an oil inlet pipeline 6 and the first oil way 3, the hydraulic oil cylinder 5 is connected and drives the water conservancy gate to lift, and the hydraulic oil cylinder 5 is also connected with the hydraulic oil tank 1 through an oil outlet pipeline 7 and the second oil way 4, for driving the water conservancy gate to descend;

[0081] The oil inlet pipeline 6 and the oil outlet pipeline 7 are both connected with the first oil way 3 through a reversing electromagnetic valve 8, for controlling the hydraulic oil of the hydraulic oil cylinder 5 to enter or exit the hydraulic oil tank 1; the oil outlet pipeline 7 is also connected with the second oil way 4 through a check valve 9, for controlling the hydraulic oil of the hydraulic oil cylinder 5 to enter the hydraulic oil tank 1.

[0082] As a specific embodiment, the water conservancy gate is also electrically connected with a stroke control device;

[0083] Gate opening control: in the process of lifting the gate, the gate opening degree and the stroke control device continuously and automatically detect the stroke difference of the left and right hydraulic oil cylinders 5, when the difference is greater than or equal to 15 mm, the detection device sends a signal, the oil way electromagnetic valve 12 with fast lifting speed is powered off and closed to stop oil supply, when the gate synchronization difference is less than 5 mm, the electromagnetic valve 12 is powered on again to open, and the gate is lifted synchronously.

[0084] Gate closing control: in the process of descending the gate, the gate opening degree and the stroke control device continuously and automatically detect the stroke difference of the left and right oil cylinders, when the difference is greater than or equal to 15 mm, the detection device sends a signal, the oil way electromagnetic valve 7 with fast descending speed is powered off and closed to stop oil return, when the gate synchronization difference is less than 5 mm, the electromagnetic valve 7 is powered on again to open, and the gate is descended synchronously.

[0085] No matter in the lifting or descending state, when the stroke deviation of the two oil cylinders is greater than or equal to 16 mm, the hydraulic control system will automatically stop the gate from lifting or descending, and send an audible and light alarm signal, and manual operation is needed to restore the balance.

[0086] Gate automatic reset: when the automatic reset function switch is turned on, if the gate slides down to 200 mm due to the leakage of the hydraulic control system when the gate is suspended at an arbitrary opening degree, the control system will automatically start the hydraulic pump motor set, and when the gate slides down more than 210 mm, the control system should send an audible and light alarm signal to automatically lift the gate to the original suspended position, and the pump needs to be stopped for maintenance.

[0087] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A hydraulic control system for a river water conservancy gate, characterized in that, Including hydraulic oil tank (1), balanced hydraulic module (2), first oil circuit (3), second oil circuit (4) and hydraulic cylinder (5);The hydraulic oil tank (1) is connected with the hydraulic cylinder (5) through the oil inlet pipeline (6) and the first oil circuit (3), the hydraulic cylinder (5) is connected and driven water gate lifting, the hydraulic cylinder (5) is also connected with the hydraulic oil tank (1) through the oil outlet pipeline (7) and the second oil circuit (4), for driving water gate drop; The oil inlet pipeline (6) and the oil outlet pipeline (7) are connected with the first oil circuit (3) through the reversing electromagnetic valve (8), for controlling the hydraulic cylinder (5) to enter and exit the hydraulic oil tank (1);The oil outlet pipeline (7) is also connected with the second oil circuit (4) through the check valve (9), for controlling the hydraulic cylinder (5) to enter the hydraulic oil tank (1).

2. The hydraulic control system for a riverway water gate according to claim 1, wherein The first oil circuit (3) is also provided with an oil inlet speed regulating valve (10) and an oil inlet check valve (11), and the reversing electromagnetic valve (8) is connected with the hydraulic cylinder (5) through the oil inlet speed regulating valve (10) and the oil inlet check valve (11) of the first oil circuit (3).

3. The hydraulic control system for a riverway water gate according to claim 1, wherein The first oil circuit (3) is connected with the rodless cavity of the hydraulic cylinder (5), and the piston rod of the hydraulic cylinder (5) is connected and driven to lift and lower the water gate.

4. The hydraulic control system for a riverway water gate according to claim 1, wherein The second oil circuit (4) is also provided with an oil outlet speed regulating valve (12), and the oil outlet pipeline (7) is connected with the rodless cavity of the hydraulic cylinder (5) through the check valve (9) and the oil outlet speed regulating valve (12), for controlling the hydraulic cylinder (5) to enter the hydraulic oil tank (1).

5. The hydraulic control system for a riverway water gate according to claim 1, wherein The balanced hydraulic module (2) includes an electromagnetic overflow valve (201) and a balanced electromagnetic valve (202), the oil inlet pipeline (6) is communicated with the oil outlet pipeline (7) through the electromagnetic overflow valve (201) and the balanced electromagnetic valve (202), and the high-pressure outlet of the electromagnetic overflow valve (201) is also connected with the oil outlet pipeline (7).

6. The hydraulic control system for a riverway water gate according to claim 1, wherein The oil inlet pipeline (6) is connected with the hydraulic oil tank (1) through a double pump system (13), the double pump system (13) includes a first hydraulic pump (1301) and a second hydraulic pump (1302), and the first hydraulic pump (1301) is connected with the second hydraulic pump (1302) in parallel.

7. The hydraulic control system for a riverway water gate according to claim 6, wherein The double pump system (13) further includes a hydraulic motor (1303), and the hydraulic motor (1303) is electrically connected with the first hydraulic pump (1301) and the second hydraulic pump (1302).

8. The hydraulic control system for a riverway water gate according to claim 1, wherein The oil outlet pipeline (7) is also provided with an oil return filter (14).

9. The hydraulic control system for a riverway water gate according to claim 1, wherein The oil inlet pipeline (6) and the second oil circuit (4) are respectively connected with pressure detection tables (15).

10. The hydraulic control system for a riverway water gate according to claim 1, wherein The first oil circuit (3) and the second oil circuit (4) are provided with a plurality of, the hydraulic oil tank (1) is connected with the plurality of first oil circuits (3) through the oil inlet pipeline (6), and the plurality of hydraulic oil tanks (1) are connected and driven to the water gate through the plurality of second oil circuits (4).

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