Energy accumulator type hydraulic control check valve

Abstract

The present application relates to butterfly valve technical field, specifically for a kind of energy accumulator formula liquid control check valve, including valve body, transmission unit, hydraulic control unit, electrical control unit;Transmission unit is located on valve body, and hydraulic control unit and electrical control unit part are integrated in a control box, and hydraulic control unit further includes oil monitoring assembly, oil pressure monitoring assembly and oil control component;Wherein oil monitoring assembly is used to monitor the liquid level of hydraulic station, air filtration, oil filtration;Oil pressure monitoring assembly is used to monitor the oil pressure value in oil circuit.The present application can monitor and display the liquid level of hydraulic station, filter inhaled air, and inject new working oil, so that it must be filtered into oil tank, thereby filtering out the dirt particles in oil, to improve the cleanliness of oil in oil tank;Oil filtration is carried out to the oil that is continuously transported and backflowed, to further improve the cleanliness of oil in oil tank.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, specifically to an accumulator-type hydraulically controlled check butterfly valve. Background Technology

[0002] A butterfly valve is a type of valve that uses a disc-shaped opening and closing element to rotate back and forth about 90° to open, close, or regulate the flow of the medium.

[0003] Accumulator-type hydraulic check butterfly valve is a pipeline control device driven by oil pressure. During the opening and closing of the hydraulic control butterfly valve, the hydraulic slow-closing check butterfly valve can connect the main oil inlet to the first oil inlet, so that the main oil pump can supply oil to the locking cylinder, keeping the locking pin in the unlocked state in the position of the hydraulic control butterfly valve.

[0004] The existing technology discloses a novel hydraulically controlled check butterfly valve with patent number CN202021439476.2. Its structure includes a fast / slow regulating valve, mounting feet, a water flow valve body, a large valve plate, a valve stem shaft, a rotating shaft, an adjusting robotic arm, a protective cabinet, and an oil pump motor. This novel hydraulically controlled check butterfly valve is driven by an oil pump motor, which in turn drives the hydraulic oil inside a hydraulic oil tank connected to the side to flow through a guide pipe connected to the bottom. A hydraulic gauge installed at the top can monitor the internal hydraulic pressure to provide safety and stability.

[0005] The existing technology relies on hydraulic pressure to open and close, but prolonged use will cause the hydraulic oil level in the tank to drop and the hydraulic oil to become mixed with impurities. The hydraulic gauge can only monitor the hydraulic pressure for safety. When the above situation occurs, it is necessary to manually check it periodically or wait for the adverse consequences caused by the situation before it can be known.

[0006] Furthermore, the lack of an oil delivery control structure means that the valve can only achieve two states: fully open and fully closed. Summary of the Invention

[0007] In view of this, the purpose of this invention is to propose an accumulator-type hydraulically controlled check butterfly valve to solve the problems that when a problem occurs, it still requires manual periodic passive inspection or can only be discovered after adverse consequences caused by the state, and that it can only achieve two states: fully open and fully closed.

[0008] To achieve the above objectives, the present invention provides an accumulator-type hydraulically controlled check butterfly valve, comprising a valve body, a transmission unit, a hydraulic control unit, and an electrical control unit;

[0009] The transmission unit is mounted on the valve body and is connected to the hydraulic control unit and the electrical control unit respectively, and is used to start the valve body;

[0010] The hydraulic control unit and electrical control unit are both integrated into a single control box. The hydraulic control unit includes a hydraulic power unit and an accumulator, both located on the same oil circuit and connected to the transmission unit via this circuit. The electrical control unit is connected to the hydraulic control unit and is used to start and stop the hydraulic control unit. The hydraulic control unit is used to start and stop the transmission unit.

[0011] The hydraulic control unit also includes an oil monitoring component, an oil pressure monitoring component, and an oil control component, all of which are located on the same oil circuit connected to the transmission unit;

[0012] The oil monitoring component is used to monitor the hydraulic station's fluid level, air filtration, and oil filtration.

[0013] The oil pressure monitoring component is used to monitor the oil pressure value in the oil circuit;

[0014] The oil control component is used for starting and stopping the flow of oil in the oil circuit, maintaining pressure, draining oil, reversing direction, controlling flow rate, and locking.

[0015] As a preferred embodiment of the present invention, the valve body includes a valve body connected to a transmission unit, a butterfly plate rotatably connected to the valve body, a valve shaft bolted to the butterfly plate, and a sealing assembly wrapped around the butterfly plate.

[0016] As a preferred embodiment of the present invention, the sealing assembly is a butterfly plate with a triple eccentric metal sealing structure and a sealing ring wrapped around and embedded on the outer edge of the butterfly plate; the sealing ring is made of rubber or flexible graphite composite layer, and the valve body is made of hard alloy overlay.

[0017] As a preferred embodiment of the present invention, the transmission unit includes a transmission box mounted on the valve body, a gear and a rack mounted inside the transmission box, a hydraulic cylinder mounted on one side of the transmission box, and a limit switch box mounted on the top of the transmission box; the piston rod of the hydraulic cylinder passes through the transmission box and is connected to the rack, the rack meshes with the gear, and the valve shaft passes through the transmission box and is connected to the gear.

[0018] As a preferred embodiment of the present invention, the hydraulic station includes an oil tank installed at the bottom of the control box, a drive unit and a manual pump connected to the oil tank, the drive unit including an oil pump connected to the oil tank inlet and outlet, a motor for driving the oil pump, and a coupling for connecting the motor and the oil pump, the oil pump being used to send oil in the oil circuit into an accumulator.

[0019] As a preferred embodiment of the present invention, the oil monitoring component includes a level gauge installed in the oil tank, an air filter installed on the air inlet of the oil tank, and an oil suction filter provided on the oil inlet and outlet of the oil tank.

[0020] As a preferred embodiment of the present invention, the oil pressure monitoring component includes an overflow valve, a pressure gauge and a pressure switch sequentially disposed on the oil circuit connected to the transmission unit;

[0021] The oil control assembly includes a check valve, a shut-off valve, an accumulator, a pressure holding solenoid valve, a throttle valve, a quick-closing solenoid valve, a reversing solenoid valve, a superimposed throttle valve, and a hydraulically controlled check valve, which are sequentially arranged on the oil line connected to the transmission unit.

[0022] As a preferred embodiment of the present invention, the electrical control unit includes an action execution element, a status monitoring element, and a remote monitoring section, wherein the remote monitoring section is used to receive execution and monitoring data from the action execution element and the status monitoring element.

[0023] As a preferred embodiment of the present invention, the action execution element is a plurality of ordinary relay type and PLC intelligent control type control units; used in hydraulic station, control oil monitoring component, accumulator and oil control component; status monitoring element is used to receive monitoring data from oil monitoring component.

[0024] The beneficial effects of this invention are: this accumulator-type hydraulically controlled check valve;

[0025] Because of the oil monitoring component, the hydraulic station can monitor and display the oil level, filter the intake air and the newly injected working oil, and filter it before entering the oil tank, thereby removing dirt particles in the oil and improving the cleanliness of the oil in the tank.

[0026] Oil filtration filters the oil that is constantly being transported and returned, thereby further improving the cleanliness of the oil in the tank.

[0027] Because it is equipped with an oil control component, it can perform commands such as start / stop, pressure holding, oil discharge, reversal, flow rate regulation, and locking control on the oil flowing in the oil circuit. This allows the butterfly valve to achieve arbitrary opening degrees such as 80%, 50%, 30%, and 10% in addition to being fully open and fully closed, thus playing a role in regulating various liquid flow rates. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the planar structure of an accumulator-type hydraulically controlled check butterfly valve according to the present invention;

[0030] Figure 2 This is a schematic diagram of the hydraulic control principle of an accumulator-type hydraulically controlled check butterfly valve according to the present invention. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example: Figure 1 As shown, the present invention discloses an accumulator-type hydraulically controlled check butterfly valve, comprising a valve body, a transmission unit, a hydraulic control unit, and an electrical control unit. The transmission unit is disposed on the valve body and is connected to both the hydraulic control unit and the electrical control unit for starting the valve body. The hydraulic control unit and the electrical control unit are both integrated in a control box. The hydraulic control unit includes a hydraulic station and an accumulator, both of which are disposed on the same oil circuit and connected to the transmission unit through this oil circuit. The electrical control unit is connected to the hydraulic control unit for starting and stopping the hydraulic control unit, and the hydraulic control unit is used to start and stop the transmission unit.

[0033] The above describes existing technology. In short, it involves using suction to transport and return hydraulic oil to rotate the transmission unit, which in turn drives the valve body to open or close, allowing the liquid to flow or shut off.

[0034] The hydraulic control unit also includes an oil monitoring component, an oil pressure monitoring component, and an oil control component, all of which are located on the same oil circuit connected to the transmission unit;

[0035] The oil monitoring component is used to monitor the hydraulic station's fluid level, air filtration, and oil filtration.

[0036] It can monitor and display the hydraulic station's fluid level, filter the intake air and the newly injected working fluid, requiring them to be filtered before entering the oil tank, thereby removing dirt particles from the oil and improving the cleanliness of the oil in the tank.

[0037] Oil filtration filters the oil that is constantly being transported and returned, thereby further improving the cleanliness of the oil in the tank.

[0038] The oil pressure monitoring component is used to monitor the oil pressure value in the oil circuit; this is to better control the entire hydraulic system and ensure the accuracy of the hydraulic system pressure.

[0039] Oil control components are used for starting and stopping the flow of oil in the oil circuit, maintaining pressure, draining oil, reversing direction, controlling flow rate, and locking.

[0040] It can perform commands such as start / stop, pressure holding, oil discharge, reversal, flow rate regulation, and locking control on the oil flowing in the oil circuit. After being used in the pipeline, the butterfly valve can achieve any opening degree such as 80%, 50%, 30%, and 10% in addition to being fully open and fully closed, thus playing a role in regulating the flow rate of various liquids.

[0041] Example: Figure 2 As shown, the present invention provides an accumulator-type hydraulically controlled check valve.

[0042] The components corresponding to the numbers in the diagram and their functions are shown below;

[0043] 1. Oil tank: Used to store hydraulic oil, with a capacity twice that of the system oil volume.

[0044] 2. Level gauge: Indicates the hydraulic oil level in the tank.

[0045] 3. Air filter: Used for filtering the breathing air in the fuel tank.

[0046] 4. Oil suction filter: Used for oil pump suction filtration.

[0047] 5. Manual pump: Used for system debugging and manual start / stop under special circumstances.

[0048] 6. Motor: Y-series three-phase asynchronous motor.

[0049] 7. Coupling: Connects the motor and the oil pump.

[0050] 8. Oil pump: CB type gear pump.

[0051] 9. Relief valve: Used to limit the upper limit of system pressure, the typical setting is about 14.5 MPa.

[0052] 10. Check valve: Used for one-way flow of oil circuit.

[0053] 11. Pressure gauge: Used to indicate system oil pressure.

[0054] 12. Pressure switch: Used to set the automatic pressure holding range of the system. The upper limit is set to approximately 14.5 MPa, and the lower limit is set to approximately 12 MPa.

[0055] 13. Shut-off valve: Used to cut off the accumulator oil circuit.

[0056] 14. Accumulator: Used as a power source for compensating system pressure and driving hydraulic cylinders.

[0057] 15. Pressure-holding solenoid valve: It serves to maintain pressure and stop valve operation in the main system.

[0058] 16. Throttle valve: Adjusts the speed of rapid closing.

[0059] 17. Quick-closing solenoid valve: Normally closed solenoid valve quickly closes and discharges oil when energized.

[0060] 18. Reversing solenoid valve: used for reversing the hydraulic cylinder.

[0061] 19. Superimposed throttle valve: The left side of the throttle valve slows down the flow, while the right side opens the valve to throttle.

[0062] 20. Hydraulic check valve: Used to lock the oil circuit.

[0063] 21. Hydraulic cylinder: Double-acting cylinder: hydraulic pressure opens, hydraulic pressure closes.

[0064] 22. Limit switch box: Used for signal feedback of the valve's fully open and fully closed states.

[0065] The hydraulic station includes an oil tank installed at the bottom of the control box, a drive unit and a manual pump connected to the oil tank. The drive unit includes an oil pump connected to the oil tank inlet and outlet, a motor for driving the oil pump, and a coupling for connecting the motor and the oil pump. The oil pump is used to send oil in the oil circuit into the accumulator.

[0066] An accumulator is an energy storage device in a hydraulic system. It converts energy in the system into compressible or potential energy at appropriate times and stores it. When the system needs it, it converts the compressible or potential energy back into hydraulic or pneumatic energy to replenish the system. When the system pressure increases instantaneously, it can absorb this energy to ensure the overall system pressure remains normal.

[0067] The transmission unit includes a transmission box mounted on the valve body, gears and racks mounted inside the transmission box, a hydraulic cylinder mounted on one side of the transmission box, and a limit switch box mounted on the top of the transmission box; the piston rod of the hydraulic cylinder passes through the transmission box and is connected to the rack, the rack meshes with the gear, and the valve shaft passes through the transmission box and is connected to the gear.

[0068] When the hydraulic oil after passing through the accumulator enters the cylinder, the hydraulic oil will generate pressure on the piston inside the cylinder. The piston will push the piston rod outward, thus causing the cylinder to move like a piston, which in turn drives the rack to move linearly, thereby driving the gear to rotate.

[0069] The valve body includes a valve body connected to the transmission unit, a butterfly plate rotatably connected to the valve body, a valve shaft bolted to the butterfly plate, and a sealing assembly wrapped around the butterfly plate.

[0070] The rotation of the gears then drives the butterfly plate to rotate in the valve body via the valve shaft, thereby opening or closing the valve.

[0071] The sealing assembly consists of a butterfly plate with a triple eccentric metal sealing structure and a sealing ring embedded in the outer edge of the butterfly plate; the sealing ring is made of rubber or flexible graphite composite laminate, and the valve body is made of hard alloy weld overlay.

[0072] The triple-eccentric structure of the valve plate's metal sealing ring and the conical valve body's sealing surface achieves instantaneous disengagement and instantaneous contact during opening and closing, resulting in no macroscopic friction between the seals, minimal wear, and low opening and closing torque. The additional eccentricity enhances the valve's self-closing and self-sealing performance; that is, when closing the valve, the increased hydraulic eccentric torque assists in closing; once in place, the torque makes the valve more tightly pressed.

[0073] The sealing surface of the triple eccentric butterfly valve is an inclined conical surface. The valve seat of the valve body and the sealing ring of the butterfly plate are in surface contact. Its working principle is to drive the movement of the butterfly plate by operating the transmission device. During the movement of the butterfly plate, its sealing ring and the valve seat are fully contacted, and the seal is achieved by elastic deformation.

[0074] This structure is existing technology. In short, the center point of the connection between the valve shaft and the butterfly plate does not coincide with the axis of the valve body, resulting in a deviation.

[0075] The oil monitoring system includes a level gauge installed in the oil tank, an air filter installed on the air inlet of the oil tank, and an oil suction filter located at the oil inlet and outlet of the oil tank.

[0076] When the hydraulic system is working, the oil level in the tank rises and falls. When it rises, air is expelled from the inside out; when it falls, air is drawn in from the outside in. To purify the oil in the tank, an air filter is vertically installed on the tank cover to filter the drawn-in air.

[0077] The air filter also serves as the oil inlet. The newly injected working oil must be filtered before entering the oil tank, thereby removing dirt particles from the oil.

[0078] In hydraulic systems, purifying the working oil is a crucial step. Air filters keep the oil in the tank clean, preventing contaminants from entering and extending the working cycle and lifespan of the oil and components, thus ensuring the normal operation of the hydraulic system.

[0079] The oil pressure monitoring component includes an overflow valve, a pressure gauge, and a pressure switch, which are sequentially arranged on the oil line connected to the transmission unit; the oil control component includes a check valve, a shut-off valve, an accumulator, a pressure holding solenoid valve, a throttle valve, a quick-closing solenoid valve, a reversing solenoid valve, a superimposed throttle valve, and a hydraulically controlled check valve, which are sequentially arranged on the oil line connected to the transmission unit.

[0080] This butterfly valve, when used in pipelines, can achieve arbitrary opening degrees such as 80%, 50%, 30%, and 10% in addition to being fully open and fully closed, thus playing a role in regulating various liquid flow rates. The specific principle is: by regulating the flow of hydraulic oil supplied to the cylinder, the piston stroke of the cylinder can also achieve 80%, 50%, 30%, and 10% strokes in addition to being fully open and fully closed.

[0081] The electrical control unit includes actuators, status monitoring components, and a remote monitoring section. The remote monitoring section receives execution and monitoring data from the actuators and status monitoring components. The actuators are several ordinary relay-type and PLC intelligent control units used in hydraulic stations, control oil monitoring components, accumulators, and oil control components. The status monitoring components receive monitoring data from the oil monitoring components.

[0082] Remotely monitor and display the operating status of the hydraulic system.

[0083] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0084] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An accumulator-type hydraulically controlled check butterfly valve, comprising a valve body, a transmission unit, a hydraulic control unit, and an electrical control unit; The transmission unit is mounted on the valve body and is connected to the hydraulic control unit and the electrical control unit respectively, and is used to start the valve body; The hydraulic control unit and electrical control unit are both integrated into a single control box. The hydraulic control unit includes a hydraulic power unit and an accumulator, both located on the same oil circuit and connected to the transmission unit via this circuit. The electrical control unit is connected to the hydraulic control unit and is used to start and stop the hydraulic control unit. The hydraulic control unit is used to start and stop the transmission unit. Its features are: The hydraulic control unit also includes an oil monitoring component, an oil pressure monitoring component, and an oil control component, all of which are located on the same oil circuit connected to the transmission unit; The oil monitoring component is used to monitor the hydraulic station's fluid level, air filtration status, and oil filtration status. The oil pressure monitoring component is used to monitor the oil pressure value in the oil circuit; The oil control component is used for starting and stopping the flow of oil in the oil circuit, maintaining pressure, draining oil, reversing direction, controlling flow rate, and locking.

2. The accumulator-type hydraulically controlled check valve according to claim 1, characterized in that, The valve body includes a valve body connected to the transmission unit, a butterfly plate rotatably connected to the valve body, a valve shaft bolted to the butterfly plate, and a sealing assembly wrapped around the butterfly plate.

3. The accumulator-type hydraulically controlled check valve according to claim 2, characterized in that, The sealing assembly is a butterfly plate with a triple eccentric metal sealing structure and a sealing ring wrapped around and embedded on the outer edge of the butterfly plate; the sealing ring is made of rubber or flexible graphite composite layer, and the valve body is made of hard alloy overlay.

4. An accumulator-type hydraulically controlled check valve according to claim 2, characterized in that, The transmission unit includes a transmission box mounted on the valve body, a gear and rack installed inside the transmission box, a hydraulic cylinder mounted on one side of the transmission box, and a limit switch box mounted on the top of the transmission box; the piston rod of the hydraulic cylinder passes through the transmission box and is connected to the rack, the rack meshes with the gear, and the valve shaft passes through the transmission box and is connected to the gear.

5. An accumulator-type hydraulically controlled check valve according to claim 1, characterized in that, The hydraulic station includes an oil tank installed at the bottom of the control box, a drive unit and a manual pump connected to the oil tank. The drive unit includes an oil pump connected to the oil tank inlet and outlet, a motor for driving the oil pump, and a coupling for connecting the motor and the oil pump. The oil pump is used to send oil in the oil circuit into the accumulator.

6. An accumulator-type hydraulically controlled check valve according to claim 5, characterized in that, The oil monitoring component includes a level gauge installed in the oil tank, an air filter installed on the air inlet of the oil tank, and an oil suction filter located at the oil inlet and outlet of the oil tank.

7. An accumulator-type hydraulically controlled check valve according to claim 1, characterized in that, The oil pressure monitoring component includes an overflow valve, a pressure gauge, and a pressure switch, which are sequentially arranged on the oil line connected to the transmission unit. The oil control assembly includes a check valve, a shut-off valve, an accumulator, a pressure-holding solenoid valve, a throttle valve, a quick-closing solenoid valve, a reversing solenoid valve, a superimposed throttle valve, and a hydraulically controlled check valve, which are sequentially arranged on the oil line connected to the transmission unit.

8. An accumulator-type hydraulically controlled check valve according to any one of claims 1-7, characterized in that, The electrical control unit includes an action execution element, a status monitoring element, and a remote monitoring section. The remote monitoring section is used to receive execution and monitoring data from the action execution element and the status monitoring element.

9. An accumulator-type hydraulically controlled check valve according to claim 8, characterized in that, The actuators consist of several control units, including ordinary relay type and PLC intelligent control type; used in hydraulic stations, control oil monitoring components, accumulators and oil control components; the status monitoring components are used to receive monitoring data from the oil monitoring components.

Images