Hydraulic emergency gate opening system for dam flood discharge single-cylinder hydraulic gate

Abstract

The utility model provides a hydraulic emergency gate opening system for a dam flood discharge single-cylinder hydraulic gate. The hydraulic emergency gate opening system comprises a high-position water source module used for high-position water taking and providing high-pressure water power. The tail end of the high-position water source module is connected with a hydraulic driving module for transmitting power; the power output end of the hydraulic driving module is connected with an oil pressure driving module for providing hydraulic power through a transmission connecting rod; and the oil pressure driving module is connected with the single-cylinder hydraulic gate. According to the system, a high-position water source serves as a power source to enter a rodless cavity of a hydraulic driving hydraulic cylinder to drive a transmission connecting rod to drive an oil pressure driving hydraulic cylinder to operate towards the rodless cavity, and the rodless cavity of the oil pressure driving hydraulic cylinder pushes turbine oil to form pressure oil to enter a rod cavity of a single-cylinder hydraulic gate hydraulic cylinder to drive a gate to perform gate opening operation; the system can build pressure oil without depending on a power supply and a pressure oil pump, and the reliability of emergency door opening is improved.

Description

Technical Field

[0001] The utility model relates to the field of dam flood discharge facilities, in particular to a hydraulic emergency door opening system for a dam flood discharge single-cylinder hydraulic gate. Background Art

[0002] The dam flood discharge hydraulic gate plays an extremely important role in preventing the reservoir from overflowing, and can effectively protect the safe operation of the reservoir. At present, the dam flood discharge hydraulic gate mainly includes arc gate, plane gate or cone valve. The dam flood discharge hydraulic gate is generally arranged at the inlet, middle section or outlet of the dam discharge structure. When the reservoir water level is too high and flood discharge is required, the flood discharge hydraulic gate is operated to open the gate for flood discharge.

[0003] The flood discharge hydraulic gate is usually opened by the hydraulic cylinder driven by pressure oil. Usually two pressure oil pumps are set as backup for each other, two power supplies are redundant, and a diesel generator is used as a backup power supply. However, if there is a serious oil leakage in the hydraulic circuit of the hydraulic gate and it cannot be handled in a short time, or if both pressure oil pumps fail and cannot establish oil pressure, the dam flood discharge hydraulic gate will not be able to reliably open and operate, threatening the safe operation of the reservoir dam. Utility Model Content

[0004] The utility model aims to provide a hydraulic emergency opening system for a single-cylinder hydraulic gate for flood discharge in a dam. This system uses a high-level water source as a power source to enter the rodless chamber of the hydraulically driven hydraulic cylinder to drive the transmission connecting rod to drive the oil pressure driven hydraulic cylinder to run toward the rodless chamber. The rodless chamber of the oil pressure driven hydraulic cylinder pushes the turbine oil to form pressure oil that enters the rod chamber of the hydraulic cylinder of the single-cylinder hydraulic gate to drive the gate to open. This system can establish pressure oil without relying on power supply and pressure oil pump, thereby improving the reliability of emergency opening.

[0005] In order to realize the above-mentioned technical features, the purpose of the utility model is realized as follows: a hydraulic emergency opening system for a single-cylinder hydraulic gate for flood discharge in a dam, comprising a high-level water source module for taking water from a high position and providing high-pressure water power; the end of the high-level water source module is connected to a hydraulic drive module for transmitting power; the power output end of the hydraulic drive module is connected to an oil pressure drive module for providing hydraulic power through a transmission connecting rod; the oil pressure drive module is connected to a single-cylinder hydraulic gate.

[0006] The high-level water source module comprises a water intake, the bottom end of which is connected with a water diversion pipe for introducing high-pressure water into the hydraulic drive module.

[0007] The hydraulic drive module comprises a hydraulic drive cylinder, the rod chamber of the hydraulic drive cylinder is connected to the water diversion pipe through the rod chamber water inlet isolation valve, and the rodless chamber of the hydraulic drive cylinder is connected to the water diversion pipe through the rodless chamber water inlet isolation valve;

[0008] The rodless chamber of the water-driven hydraulic cylinder is equipped with a rodless chamber drainage isolation valve;

[0009] The rod chamber of the water-driven hydraulic cylinder is equipped with a rod chamber drainage isolation valve.

[0010] The installation elevation of the water intake is higher than the installation elevation of the water-driven hydraulic cylinder. The pressure water formed by the elevation difference between the two installations is led to the water-driven hydraulic cylinder through the water diversion pipe.

[0011] One end of the transmission connecting rod is connected to the end of the piston rod of the water-driven hydraulic cylinder, and the other end of the transmission connecting rod is connected to the end of the piston rod of the oil-driven hydraulic cylinder of the oil-driven module.

[0012] The oil pressure drive module comprises an oil pressure drive hydraulic cylinder, the rod chamber of the oil pressure drive hydraulic cylinder is connected to the oil return tank through the rod chamber oil replenishment isolation valve, and the rodless chamber of the oil pressure drive hydraulic cylinder is connected to the oil return tank through the rodless chamber oil replenishment isolation valve;

[0013] The rodless chamber of the oil pressure driven hydraulic cylinder is connected to the single cylinder hydraulic gate through a hydraulic emergency main oil supply isolation valve.

[0014] The single-cylinder hydraulic gate comprises a single-cylinder hydraulic gate hydraulic cylinder, a single-cylinder hydraulic gate connecting rod of the single-cylinder hydraulic gate hydraulic cylinder is connected to the gate, and a hydraulic emergency main oil supply isolation valve is connected to a rod chamber of the single-cylinder hydraulic gate hydraulic cylinder;

[0015] The rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder is connected to the oil return tank through the hydraulic cylinder rodless chamber oil return isolation valve.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model system uses a high-level water source as a power source to enter the rodless chamber of the water-driven hydraulic cylinder to drive the transmission connecting rod to drive the oil pressure driven hydraulic cylinder to run toward the rodless chamber. The rodless chamber of the oil pressure driven hydraulic cylinder pushes the turbine oil to form pressure oil that enters the rod chamber of the single-cylinder hydraulic gate hydraulic cylinder to drive the gate to open the door. This system can establish pressure oil without relying on power supply and pressure oil pump, thereby improving the reliability of emergency door opening.

[0018] 2. The utility model can be completely isolated from the single-cylinder hydraulic gate by simply closing the hydraulic emergency main oil supply isolation valve and the rodless chamber oil return isolation valve of the gate hydraulic cylinder, without affecting the normal operation of the gate.

[0019] 3. The utility model is easy to operate, has no complicated electrical control circuit, and does not require related control cabinets and control cables.

[0020] 4. The power water source of the utility model is physically isolated from the gate hydraulic circuit, which will not pollute the oil quality and damage the original mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is the overall system diagram of the utility model.

[0023] In the figure: a high-level water source module 100, a hydraulic drive module 200, a transmission connecting rod 300, a hydraulic drive module 400, and a single-cylinder hydraulic gate 500;

[0024] Rod chamber water inlet isolation valve 1, rodless chamber water inlet isolation valve 2, rodless chamber drainage isolation valve 3, rod chamber drainage isolation valve 4, rod chamber oil replenishment isolation valve 5, rodless chamber oil replenishment isolation valve 6, hydraulic emergency main oil supply isolation valve 7, hydraulic cylinder rodless chamber oil return isolation valve 8, hydraulically driven hydraulic cylinder 9, water diversion pipe 10, oil pressure driven hydraulic cylinder 11, oil return tank 12, gate 13, single-cylinder hydraulic gate hydraulic cylinder 14, single-cylinder hydraulic gate connecting rod 15, and high-pressure water from water intake 16. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] See also Figure 1A hydraulic emergency opening system for a dam flood discharge single-cylinder hydraulic gate includes a high-level water source module 100 for taking water from a high position and providing high-pressure water power; the end of the high-level water source module 100 is connected to a hydraulic drive module 200 for transmitting power; the power output end of the hydraulic drive module 200 is connected to an oil pressure drive module 400 for providing hydraulic power through a transmission connecting rod 300; and the oil pressure drive module 400 is connected to a single-cylinder hydraulic gate 500. This system uses a high-level water source as a power source to enter the rodless cavity of the hydraulic drive hydraulic cylinder to drive the transmission connecting rod to drive the oil pressure drive hydraulic cylinder to run toward the rodless cavity, and the rodless cavity of the oil pressure drive hydraulic cylinder pushes the turbine oil to form pressure oil to enter the rod cavity of the hydraulic gate hydraulic cylinder of the single-cylinder hydraulic gate to drive the gate to open the gate. This system can establish pressure oil without relying on power supply and pressure oil pump, thereby improving the reliability of emergency opening.

[0028] Furthermore, the high-level water source module 100 includes a water intake 16, the bottom end of which is connected to a water diversion pipe 10, and is used to introduce high-pressure water into the hydraulic drive module 200. The high-level water source module 100 mainly uses the water pressure of the high head as the power source for the operation of the entire system. During operation, high-pressure water is introduced from the water intake 16 to the water diversion pipe 10, and then introduced from the water diversion pipe 10 to the hydraulic drive hydraulic cylinder 9, and then the hydraulic drive hydraulic cylinder 9 provides subsequent hydraulic power.

[0029] Further, the hydraulic drive module 200 includes a hydraulic drive cylinder 9, the rod chamber of the hydraulic drive cylinder 9 is connected to the water diversion pipe 10 through the rod chamber water inlet isolation valve 1, and the rodless chamber of the hydraulic drive cylinder 9 is connected to the water diversion pipe 10 through the rodless chamber water inlet isolation valve 2; the rodless chamber of the hydraulic drive cylinder 9 is installed with a rodless chamber drainage isolation valve 3; the rod chamber of the hydraulic drive cylinder 9 is installed with a rod chamber drainage isolation valve 4. The action of the hydraulic drive cylinder 9 is controlled mainly by the switch control of the corresponding isolation valve through the above hydraulic drive module 200. During the working process, by closing the rod chamber water inlet isolation valve 1 and the rodless chamber water discharge isolation valve 3 of the hydraulically driven hydraulic cylinder 9, and opening the rod chamber water discharge isolation valve 4 and the rodless chamber water inlet isolation valve 2, pressurized water enters the rodless chamber of the hydraulically driven hydraulic cylinder 9 to push the left end of the transmission connecting rod 300 to move to the right, and drives the right end of the transmission connecting rod 300 installed in the oil pressure driven hydraulic cylinder 11 to move to the right at the same time; when the right end of the transmission connecting rod 300 moves to the right in the oil pressure driven hydraulic cylinder 11, the turbine oil in the rodless chamber of the oil pressure driven hydraulic cylinder 11 is compressed to form pressure oil.

[0030] Furthermore, the installation elevation of the water intake 16 is higher than the installation elevation of the water-driven hydraulic cylinder 9 , and the pressure water formed by the elevation difference between the two installations is led to the water-driven hydraulic cylinder 9 through the water diversion pipe 10 .

[0031] Furthermore, one end of the transmission connecting rod 300 is connected to the piston rod end of the water-driven hydraulic cylinder 9, and the other end of the transmission connecting rod 300 is connected to the piston rod end of the oil-driven hydraulic cylinder 11 of the oil-driven module 400. When the pressurized water enters the rodless cavity of the water-driven hydraulic cylinder 9, the left end of the transmission connecting rod 300 is pushed to move to the right, and the right end of the transmission connecting rod 300 installed on the oil-driven hydraulic cylinder 11 is driven to move to the right at the same time.

[0032] Furthermore, the oil pressure drive module 400 includes an oil pressure drive hydraulic cylinder 11, the rod chamber of the oil pressure drive hydraulic cylinder 11 is connected to the oil return tank 12 through the rod chamber oil replenishment isolation valve 5, and the rodless chamber of the oil pressure drive hydraulic cylinder 11 is connected to the oil return tank 12 through the rodless chamber oil replenishment isolation valve 6; the rodless chamber of the oil pressure drive hydraulic cylinder 11 is connected to the single cylinder hydraulic gate 500 through the hydraulic emergency main oil supply isolation valve 7. Through the above structure, during the working process, the rodless chamber of the oil pressure drive hydraulic cylinder 11 is connected to the rod chamber of the single cylinder hydraulic gate hydraulic cylinder 14 through an oil pipe, and a hydraulic emergency main oil supply isolation valve 7 is installed in the middle to cut off the pressure oil source. The rodless chamber of the single cylinder hydraulic gate hydraulic cylinder 14 is connected to the oil return tank 12 through an oil pipe, which is used for the single cylinder hydraulic gate connecting rod 15 to move toward the rodless chamber of the single cylinder hydraulic gate hydraulic cylinder 14, and the rodless chamber of the single cylinder hydraulic gate hydraulic cylinder 14 returns oil. By closing the hydraulic emergency main oil supply isolation valve 7 and the gate hydraulic cylinder rodless chamber oil return isolation valve 8 at the same time, the hydraulic emergency door opening system can be completely isolated from the single-cylinder hydraulic gate without affecting the normal operation of the single-cylinder hydraulic gate.

[0033] Furthermore, the single-cylinder hydraulic gate 500 includes a single-cylinder hydraulic gate hydraulic cylinder 14, a single-cylinder hydraulic gate connecting rod 15 of the single-cylinder hydraulic gate hydraulic cylinder 14 is connected to the gate 13, and the hydraulic emergency main oil supply isolation valve 7 is connected to the rod chamber of the single-cylinder hydraulic gate hydraulic cylinder 14; the rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder 14 is connected to the return oil tank 12 through the hydraulic cylinder rodless chamber oil return isolation valve 8. During operation, when the rod chamber of the single-cylinder hydraulic gate hydraulic cylinder 14 enters the pressure oil, the single-cylinder hydraulic gate connecting rod 15 is pushed to run toward the rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder 14, that is, to run upward, driving the gate 13 connected thereto to open the gate.

[0034] Embodiment 2:

[0035] A method for operating a hydraulic emergency door opening system for a dam flood discharge single-cylinder hydraulic gate, the method being implemented by using the hydraulic emergency door opening system for a dam flood discharge single-cylinder hydraulic gate, comprising the following steps:

[0036] Opening process:

[0037] The pressure water is led to the hydraulic cylinder 9 through the water pipe 10 by the difference in installation elevation between the water intake 16 and the hydraulic cylinder 9;

[0038] First, close the rodless chamber oil replenishment isolation valve 6 of the oil pressure driven hydraulic cylinder 11, and open the rod chamber oil replenishment isolation valve 5, the hydraulic emergency main oil supply isolation valve 7, and the hydraulic cylinder rodless chamber oil return isolation valve 8 of the oil pressure driven hydraulic cylinder 11;

[0039] Then, the rod chamber water inlet isolation valve 1 and the rodless chamber water discharge isolation valve 3 of the hydraulically driven hydraulic cylinder 9 are closed, and the rod chamber water discharge isolation valve 4 and the rodless chamber water inlet isolation valve 2 are opened. The pressurized water enters the rodless chamber of the hydraulically driven hydraulic cylinder 9 to push the left end of the transmission connecting rod 300 to move to the right, and drives the right end of the transmission connecting rod 300 installed in the oil pressure driven hydraulic cylinder 11 to move to the right at the same time; when the right end of the transmission connecting rod 300 moves to the right in the oil pressure driven hydraulic cylinder 11, the turbine oil in the rodless chamber of the oil pressure driven hydraulic cylinder 11 is compressed to form pressurized oil;

[0040] The pressure oil formed by the turbine oil compressed in the rodless chamber of the oil pressure driven hydraulic cylinder 11 enters the rod chamber of the single-cylinder hydraulic gate hydraulic cylinder 14 through the hydraulic emergency main oil supply isolation valve 7, pushing the single-cylinder hydraulic gate connecting rod 15 toward the rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder 14 to drive the gate 13 connected thereto to open the gate; the turbine oil in the rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder 14 returns to the return oil tank 12 through the hydraulic cylinder rodless chamber return oil isolation valve 8;

[0041] The turbine oil in the oil return tank 12 enters the rod chamber of the oil pressure driven hydraulic cylinder 11 through the rod chamber oil replenishment isolation valve 5 of the oil pressure driven hydraulic cylinder 11 for oil replenishment;

[0042] Reset process:

[0043] When the hydraulic emergency system completes the gate opening operation, first close the hydraulic emergency main oil supply isolation valve 7 and the hydraulic cylinder rodless chamber oil return isolation valve 8 to completely isolate the hydraulic emergency gate opening system from the single-cylinder hydraulic gate;

[0044] Then open the rodless chamber oil replenishment isolation valve 6 of the oil pressure driven hydraulic cylinder 11, close the rodless chamber water inlet isolation valve 2 of the hydraulic pressure driven hydraulic cylinder 9, open the rodless chamber drainage isolation valve 3 of the hydraulic pressure driven hydraulic cylinder 9, close the rod chamber drainage isolation valve 4 of the hydraulic pressure driven hydraulic cylinder 9, open the rod chamber water inlet isolation valve 1 of the hydraulic pressure driven hydraulic cylinder 9, and the pressurized water enters the rod chamber of the hydraulic pressure driven hydraulic cylinder 9 to push the left end of the transmission connecting rod 300 to move to the left, and drives the right end of the transmission connecting rod 300 installed on the oil pressure driven hydraulic cylinder 11 to move to the left at the same time;

[0045] At this time, the oil return tank 12 replenishes oil to the rodless chamber of the oil pressure driven hydraulic cylinder 11 through the rodless chamber oil replenishment isolation valve 6 of the oil pressure driven hydraulic cylinder 11, and the turbine oil in the rod chamber of the oil pressure driven hydraulic cylinder 11 returns to the rodless chamber of the oil pressure driven hydraulic cylinder 11 through the rod chamber oil replenishment isolation valve 5 of the oil pressure driven hydraulic cylinder 11;

[0046] Repeat the door opening and resetting process until the gate is raised to the required height.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hydraulic emergency opening system for a single-cylinder hydraulic gate for flood discharge at a dam, characterized in that: It comprises a high-position water source module (100) for taking water from a high position and providing high-pressure water power; the end of the high-position water source module (100) is connected to a hydraulic drive module (200) for transmitting power; the power output end of the hydraulic drive module (200) is connected to an oil pressure drive module (400) for providing hydraulic power via a transmission connecting rod (300); and the oil pressure drive module (400) is connected to a single-cylinder hydraulic gate (500).

2. According to claim 1, a hydraulic emergency opening system for a dam flood discharge single-cylinder hydraulic gate is characterized in that: The high-position water source module (100) comprises a water intake (16), the bottom end of which is connected to a water diversion pipe (10) and is used to introduce high-pressure water into the hydraulic drive module (200).

3. According to claim 2, a hydraulic emergency door opening system for a dam flood discharge single-cylinder hydraulic gate is characterized in that: The hydraulic drive module (200) comprises a hydraulic drive cylinder (9), wherein the rod chamber of the hydraulic drive cylinder (9) is connected to a water diversion pipe (10) via a rod chamber water inlet isolation valve (1), and the rodless chamber of the hydraulic drive cylinder (9) is connected to the water diversion pipe (10) via a rodless chamber water inlet isolation valve (2); The rodless chamber of the water-driven hydraulic cylinder (9) is equipped with a rodless chamber drainage isolation valve (3); The rod chamber of the water-driven hydraulic cylinder (9) is equipped with a rod chamber drainage isolation valve (4).

4. According to claim 3, a hydraulic emergency door opening system for a dam flood discharge single cylinder hydraulic gate is characterized in that: The installation elevation of the water intake (16) is higher than the installation elevation of the water-driven hydraulic cylinder (9), and the pressure water formed by the elevation difference between the two installations is led to the water-driven hydraulic cylinder (9) through the water diversion pipe (10).

5. According to claim 3, a hydraulic emergency door opening system for a dam flood discharge single cylinder hydraulic gate is characterized in that: One end of the transmission connecting rod (300) is connected to the end of the piston rod of the water-driven hydraulic cylinder (9), and the other end of the transmission connecting rod (300) is connected to the end of the piston rod of the oil-driven hydraulic cylinder (11) of the oil-driven module (400).

6. A hydraulic emergency door opening system for a dam flood discharge single cylinder hydraulic gate according to claim 5, characterized in that: The oil pressure drive module (400) comprises an oil pressure drive hydraulic cylinder (11), wherein the rod chamber of the oil pressure drive hydraulic cylinder (11) is connected to the oil return tank (12) via a rod chamber oil supply isolation valve (5), and the rodless chamber of the oil pressure drive hydraulic cylinder (11) is connected to the oil return tank (12) via a rodless chamber oil supply isolation valve (6); The rodless chamber of the oil pressure driven hydraulic cylinder (11) is connected to the single cylinder hydraulic gate (500) via a hydraulic emergency main oil supply isolation valve (7).

7. A hydraulic emergency door opening system for a dam flood discharge single cylinder hydraulic gate according to claim 6, characterized in that: The single-cylinder hydraulic gate (500) comprises a single-cylinder hydraulic gate hydraulic cylinder (14), a single-cylinder hydraulic gate connecting rod (15) of the single-cylinder hydraulic gate hydraulic cylinder (14) is connected to the gate (13), and a hydraulic emergency main oil supply isolation valve (7) is connected to the rod chamber of the single-cylinder hydraulic gate hydraulic cylinder (14); The rodless chamber of the single-cylinder hydraulic gate hydraulic cylinder (14) is connected to the oil return tank (12) via a hydraulic cylinder rodless chamber oil return isolation valve (8).

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