# US 2018/0023532 A1 · Reversible water pump and hydroturbine

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- Number: US 2018/0023532 A1
- Document ID: US20180023532A1
- Status: Published application
- Kind: A1
- Application number: 15/550,056
- Filed: 2016-01-28
- Published: 2018-01-25
- Earliest claimed: 2015-02-13
- Inventors: Guangsheng ZHENG
- Web page: https://patentgrep.com/patent/US20180023532A1

## CPC

- F03B 3/103: {the same wheel acting as turbine wheel and as pump wheel}
- F03B 3/121: {Blades, their form or construction}
- F03B 3/18: Stator blades; Guide conduits or vanes, e.g. adjustable {(conduits in dams or the like F03B13/08; arrangement of valves F03B11/004)}
- F05B 2240/13: to collect or cause flow towards or away from turbines
- Y02E 10/20: Hydro energy
- F03B: MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04, rotary fluid gearing of the hydrokinetic type F16H41/00)
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A reversible water pump and hydroturbine including a housing and a rotor is provided. The housing includes two end boards, which have the same shape, and a sideboard that connects the two end boards respectively. Each end board includes two coaxial semicircle boards having two different radiuses, that is, a large semicircular board and a small semicircular board which are joined together at their diameter; the side board includes a first round sideboard and a second round sideboard, two inlets/outlets, i.e. a first inlet/outlet and a second inlet/outlet, are formed at the ends of the first round sideboard. The rotor includes a rotary shaft, a rotary wheel and at least two blades, a service channel forms between the rotary wheel and the second round sideboard, and a return channel forms between the rotary wheel and the first round sideboard.

## Claims

### Claim 1

A reversible water pump and hydroturbine, comprising a housing and a rotor movably provided in the housing; wherein
the housing comprises two end boards, which have same shape and are parallel-disposed oppositely, and a sideboard that connects the two end boards respectively; each end board is includes two coaxial semicircle boards having two different radiuses, that is, a large semicircular board and a small semicircular board are joined together at their diameter, wherein an axis hole is provided; the sideboard comprises a first round sideboard to seal two large semicircular boards completely, and a second round sideboard to seal two small semicircular boards completely, such that a first inlet/outlet and a second inlet/outlet, are formed at the ends of the first round sideboard;
the rotor comprises a rotary shaft, a rotary wheel arranged on the rotary shaft, and two blades configured on an outer wall of the rotary wheel; a service channel is between two small semicircular boards, the second round sideboard and the rotary wheel, and a return channel is between two large semicircular boards, the first round sideboard and the rotary wheel, the radial cross section area of the service channel is identical to the area of the blades and is smaller than the radial cross section area of the return channel;
the housing is provided with a first water-blocking apparatus at the return channel, near the first inlet/outlet, a second water-blocking apparatus at the return channel, near the second inlet/outlet, and a driving device to drive the first water-blocking apparatus and the second water-blocking apparatus in an open status or a close status alternatively, the relative angle of the first water-blocking apparatus and the second water-blocking apparatus disposed on the first round sideboard is between 60° and 120°.

### Claim 2 (depends on 1)

The reversible water pump and hydroturbine according to claim 1, wherein the first water-blocking apparatus and the second water-blocking apparatus are both provided with a sealing sleeve that is configured at the housing, each sealing sleeve is provided with a guide rod, a rod clamp, a water-blocking plate and a guide rail disposed at the housing, the water-blocking plate is movably arranged on the guide rail, and the guide rail is configured along the radial direction of the large semicircular board.

### Claim 3 (depends on 2)

The reversible water pump and hydroturbine according to claim 2, wherein the driving device comprises a cam fixed on the rotary shaft, and the periphery of the cam is provided with a cam groove in which the guide rods respectively connected to the water-blocking plates, one end of each guide rod is embedded in the cam groove slidably, and the other end is mounted to the water-blocking plate, thereby the rotation of the cam allows the guide rods to lead the water-blocking plates to perform a linear reciprocating motion, so that at least one water-blocking plate can block the return channel.

### Claim 4 (depends on 2)

The reversible water pump and hydroturbine according to claim 2, wherein the driving device comprises a hydraulic system including a power source, a trigger element, a control valve and an executive element, the executive element is connected to the water-blocking plate, the control valve is configured on the housing, and the trigger element for the control value is configured on the rotary shaft.

### Claim 5 (depends on 2)

The reversible water pump and hydroturbine according to claim 2, wherein the water-blocking apparatus comprised a water pressure balance device to connect or disconnect both sides of the water-blocking plate.

### Claim 6 (depends on 1)

The reversible water pump and hydroturbine according to claim 1, wherein the two blades are arranged on the rotor in opposite directions.