# US 10,119,379 B2 · Pressure exchange system with motor system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,119,379 B2
- Document ID: US10119379B2
- Status: Granted
- Kind: B2
- Application number: 14/813,850
- Filed: 2015-07-30
- Published: 2016-02-04
- Granted: 2018-11-06
- Earliest claimed: 2014-07-31
- Assignees: Energy Recovery, Inc.
- Applicants: Energy Recovery, Inc.
- Inventors: Mark Richter; Felix Winkler
- Web page: https://patentgrep.com/patent/US10119379B2

## CPC

- F04F 13/00: Pressure exchangers
- E21B 43/16: Enhanced recovery methods for obtaining hydrocarbons
- E21B 43/2607: {Surface equipment specially adapted for fracturing operations}
- E21B 43/267: reinforcing fractures by propping
- F04F: PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED {(evacuating by sorption F04B)}; SIPHONS {(conveying materials in bulk by flows of gas, liquid of foam B65G53/00)}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A system including a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid, and a motor system coupled to the hydraulic energy transfer system and configured to power the hydraulic energy transfer system.

## Claims

### Claim 1

A system, comprising:
a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid, wherein the rotary IPX comprises a rotor, the rotor comprises ducts extending longitudinally through the rotor, and the first fluid and the second fluid directly contact each other within a respective duct to exchange pressures, wherein the first fluid is a substantially particulate free fluid and the second fluid is a particulate laden fluid: and
an electric motor coupled to the rotary IPX and configured to power the rotary IPX, wherein the electric motor comprises first permanent magnets or first electromagnets within the rotor of the rotary IPX configured to interact with second permanent magnets or second electromagnets.

### Claim 2 (depends on 1)

The system of claim 1, wherein the second permanent magnets or second electromagnets couple to a shaft that extends through the rotor.

### Claim 3 (depends on 1)

The system of claim 1, comprising a controller with one or more modes of operation configured to control the motor system, wherein the one or more modes of operation comprise at least one of a startup mode, a speed control mode, a continuous power mode, or a periodic power mode.