Phase difference symmetric liquid lifting device based on gravity compensation

Abstract

The invention relates to a liquid lifting device, and belongs to the field of new energy technology and liquid conveying. The device comprises two pumping and storing units which are symmetrically arranged, a linkage mechanism and a supporting frame. Each pumping and storing unit is composed of a vertically fixed inner cylinder and a movable outer cylinder coaxially arranged outside the inner cylinder in a sleeving mode, a liquid inlet one-way valve is arranged at the bottom of the inner cylinder, and a piston linked with the outer cylinder is arranged in a cavity of the inner cylinder; a liquid discharge pipe with a liquid discharge one-way valve penetrates between the piston and the top of the outer cylinder; a gap between the outer cylinder and the inner cylinder is filled with liquid to form a gravity compensation body. The linkage mechanism comprises a crankshaft and a connecting rod assembly with the phase difference of 180 degrees, the two outer barrels are driven to alternately ascend and descend, when the outer barrels ascend, the liquid inlet valve is opened for liquid storage, when the outer barrels descend, the liquid drainage valve is opened, and the crankshaft is assisted to do work through gap liquid gravity. According to the design, gravitational potential energy recycling is achieved through hydrostatic pressure transmission, the energy consumption for lifting liquid (such as water) from the low position to the high position is remarkably reduced, and the device is suitable for new energy storage systems, irrigation projects and any scene where liquid needs to be lifted from the low position to the high position.

Description

Technical Field

[0001] The present invention relates to the field of liquid transportation technology, and in particular to a mechanical device that uses gravitational potential energy compensation to reduce energy consumption. The device is specifically suitable for use in the field of new energy (such as pumped-storage power stations) and in application scenarios where liquids (such as water, oil, and mercury) need to be lifted from low to high locations. It is particularly suitable for environments where natural water bodies, open liquid storage facilities, etc. are used as liquid sources. Background Art

[0002] Traditional liquid lifting devices, such as centrifugal pumps, rely on continuous energy input from a motor to overcome gravity, resulting in high energy consumption. While existing hydraulic systems can transmit pressure, they do not effectively utilize the gravity of the device itself. There is an urgent need for a liquid lifting device that can recycle gravitational potential energy and reduce external energy consumption. Summary of the Invention

[0003] Core innovation: The present invention achieves dynamic balance of crankshaft rotation resistance through a phase-difference symmetrical structure and a gap liquid gravity transmission mechanism.

[0004] The key feature of the core innovation is that when the outer cylinder descends, the gravity of the liquid in the gap is converted into a compensation torque, which forms an offsetting effect with the motion resistance of the other unit when it rises, significantly reducing the demand for external driving force, and this gravity compensation mechanism is universally applicable to the installation environment of the device (such as liquid storage tanks, natural water bodies, etc.). DETAILED DESCRIPTION

[0005] Cycle running process: 1. Unit A outer cylinder rising stage (corresponding to unit B outer cylinder falling stage): The crankshaft (6) is driven by an external force to rotate, and the outer cylinder (9A) of the pulling unit A is lifted in the vertical direction through the connecting rod (17A); The outer cylinder (9A) drives the piston drive rod (10A) and the piston body (11A) to rise synchronously, and the volume of the chamber (19A) increases to form a negative pressure; The liquid inlet one-way valve (13A) opens under the action of negative pressure, and the liquid flows into the chamber (19A) through the bottom of the inner cylinder (8A); The discharge check valve (12A) is kept closed by the negative pressure; The motion resistance acting on the outer cylinder (9A) includes: the gravity of the liquid in the gap (18A) above the horizontal plane, the gravity of the liquid in the chamber (19A) above the horizontal plane, and the gravity of the liquid column in the discharge pipe (16A). 2. Unit A outer cylinder descending stage (corresponding to unit B outer cylinder ascending stage): The crankshaft (6) drives the outer cylinder (9A) of unit A to descend vertically; The piston body (11A) squeezes the liquid in the chamber (19A) to form a positive pressure; The liquid inlet check valve (13A) is closed by the positive pressure; The discharge check valve (12A) is opened by the positive pressure, and the liquid is discharged to the preset high level through the discharge pipe (16A); The compensating torque acting on the outer cylinder (9A) includes the weight of the liquid in the gap (18A) above the horizontal plane. 3. Effect of alternating operation of two units: The gravity compensation torque of any group (such as unit A) during the descent phase is mainly derived from the liquid in its gap (18A). This torque counteracts the motion resistance of unit B during the ascent phase, which is mainly derived from the liquid in its gap (18A), the liquid in the chamber (19A), and the liquid column in the discharge pipe (16A). The external driving force required for the rotation of the crankshaft (6) is significantly reduced, thereby realizing the energy recycling of "compensating resistance with weight".

[0006] General Statement Description of orientation and positional relationships: The terms "vertical," "horizontal," "top," "upper," "lower," "inner," and "outer" used in this disclosure to indicate orientations or positional relationships are based on the orientations shown in the accompanying drawings or the orientations in which the device is typically placed when in use. These are provided solely for the convenience of describing the present disclosure and are not intended to limit the actual installation orientation.

[0007] Broad description of connection methods: The terms "connection", "hinge", and "fixation" in this invention include but are not limited to the following methods: Fixed connection (such as welding, bolting); Removable connections (such as flange docking, snap fit); Indirect connection (through an intermediate sealing gasket or transition pipe).

[0008] Scalability of technical solutions: The technical solution of the present invention can be implemented by equivalent substitution, for example: The cylindrical outer cylinder (9A) can be replaced with a polygonal outer cylinder; The drain pipe (16A) can be replaced with a pressure-resistant hose; The sealing method of the piston body (11A) can adopt magnetic fluid sealing; The liquid source environment may be an independent liquid storage tank, a natural water body (such as a river, a lake, an ocean), or any container or place that can provide sufficient liquid to immerse the lower part of the pumping storage unit. Scope of protection statement All similar devices realized within the framework of the principles of the present invention by adjusting structural parameters and adding or removing non-core components (such as adding sensors and optimizing the layout of the guide pipes) fall within the scope of protection of the claims of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 This is a schematic planar structural diagram of an embodiment of a phase-difference symmetrical liquid lifting device based on gravity compensation according to the present invention; Figure 2 This is a partial perspective structural diagram of an embodiment of a phase-difference symmetrical liquid lifting device based on gravity compensation according to the present invention; Figure 3 This is a schematic diagram of a front cross-sectional structure of an embodiment of a phase-difference symmetrical liquid lifting device based on gravity compensation according to the present invention; Figure 4 Schematic diagram of the crankshaft phase difference of an embodiment of a phase difference symmetrical liquid lifting device based on gravity compensation of the present invention.

[0010] The main component symbols are described as follows: Pumping and storage unit A, inner tube support rod 7A, cylindrical inner tube 8A, outer tube 9A, piston drive rod 10A, piston body 11A, discharge check valve 12A, inlet check valve 13A, pin hole 14A, positioning pin 15A, discharge pipe 16A, connecting rod 17A, gap 18A, chamber 19A; Pumping and storage unit B, inner tube support rod 7B, cylindrical inner tube 8B, outer tube 9B, piston drive rod 10B, piston body 11B, discharge check valve 12B, inlet check valve 13B, pin hole 14B, positioning pin 15B, discharge pipe 16B, connecting rod 17B, gap 18B, chamber 19B; Liquid source environment 1 (such as a pool), liquid 2, bracket 3, through hole 301, rolling bearing 302, bracket 4, through hole 401, rolling bearing 402, limiting guide plate 5, guide hole 501, guide hole 502, crankshaft 6, connecting rod journal 601, connecting rod journal 602, supporting base 20 (such as the ground).

Claims

1. A phase difference symmetrical liquid lifting device based on gravity compensation, characterized in that include: Liquid source environments containing or contacting liquids; At least two groups of symmetrically arranged pumping and storage units, the lower parts of which are immersed in the liquid of the liquid source environment; Each group of pumped storage units (such as unit A) contains: An inner cylinder support rod (7A) vertically fixed on a support base (20); A cylindrical inner cylinder (8A) fixed to the top end of the inner cylinder support rod (7A) is provided with a liquid inlet one-way valve (13A) at the bottom and is open at the top; A cylindrical outer cylinder (9A) is coaxially sleeved outside the inner cylinder (8A), wherein the inner wall of the outer cylinder (9A) forms a gap (18A) with the outer wall of the inner cylinder (8A); the outer cylinder (9A) has an open bottom immersed in the liquid of the liquid source environment, and a closed top with a pin hole (14A) and a positioning pin (15A); A piston drive rod (10A) is arranged on the top of the outer cylinder (9A), the bottom end of which extends into the cavity of the inner cylinder (8A) and is fixedly connected to the piston body (11A), and the piston body (11A) is in sealing and sliding cooperation with the inner wall of the inner cylinder (8A); A liquid discharge pipe (16A) passing through the piston body (11A) and the top of the outer cylinder (9A) is provided with a liquid discharge one-way valve (12A) therein; In the initial state of each pumping and storage unit (such as unit A), the gap (18A), the chamber (19A) between the bottom of the inner cylinder (8A) and the piston body (11A), and the discharge pipe (16A) are all filled with liquid, and the material of the pumping and storage unit can withstand negative pressure; The bracket (3) and the bracket (4) are fixed on the supporting base (20) and are symmetrical to each other. The top of the bracket (3) is provided with a through hole (301) with a rolling bearing (302), and the top of the bracket (4) is provided with a through hole (401) with a rolling bearing (402). The middle parts of the bracket (3) and the bracket (4) are fixedly connected to a limiting guide plate (5) by welding, and the limiting guide plate (5) is provided with a guide hole (501) and a guide hole (502) in a vertical direction; the outer wall of the outer cylinder (9A) is embedded in the guide hole (501), and the outer wall of the outer cylinder (9B) is embedded in the guide hole (502), so that the outer cylinder (9A) and the outer cylinder (9B) can only slide in the vertical direction, and the horizontal displacement and rotation are constrained by the side walls of the guide hole (501) and the guide hole (502); The crankshaft (6) is horizontally mounted in the through hole (301) and the through hole (401) via a rolling bearing (302) and a rolling bearing (402); the connecting rod journal (601) of the crankshaft (6) is hinged to the top of the outer cylinder (9A) via a connecting rod (17A); the connecting rod journal (602) of the crankshaft (6) is hinged to the top of the outer cylinder (9B) via a connecting rod (17B); and the phase difference between the connecting rod journal (601) and the connecting rod journal (602) of the crankshaft (6) is 180°; The cross-sectional area of the outer cylinder (9A) of each group (such as unit A) is greater than the cross-sectional area of the inner cylinder (8A).

2. The device according to claim 1, characterized in that: In each group of pumped storage units (such as unit A), the liquid inlet one-way valve (13A) only allows liquid to flow from the outside of the inner cylinder (8A) into the chamber (19A), and the liquid discharge one-way valve (12A) only allows liquid to be discharged from the chamber (19A) to the outside of the outer cylinder (9A) through the discharge pipe (16A).

3. The device according to claim 1 or 2, characterized in that: When the outer cylinder (9A) of any group of pumping and storage units (such as unit A) rises under the drive of the crankshaft (6): The liquid gravity acting on the outer cylinder (9A) and forming the movement resistance of the crankshaft (6) includes: the liquid gravity in the gap (18A) above the horizontal plane, the liquid gravity in the chamber (19A) above the horizontal plane, and the liquid column gravity in the discharge pipe (16A); When the outer cylinder (9A) of any group of pumping units (such as unit A) descends under the drive of the crankshaft (6): The liquid gravity acting on the outer cylinder (9A) to form a compensating torque to assist the rotation of the crankshaft (6) includes: the liquid gravity in the gap (18A) above the horizontal plane; Through a symmetrical arrangement with a phase difference of 180°, the compensating torque generated when the outer cylinder (9A) of any group of pumping and storage units (such as unit A) descends is used to partially or completely offset the motion resistance torque generated when the outer cylinder (9B) of another group of pumping and storage units ascends.

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