Pressure exchange system with motor system
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.
1. A frac system, comprising:
a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid, the hydraulic energy transfer system comprises:
a housing;
a rotor within the housing and configured to exchange the pressures between the first fluid and the second fluid;
a sleeve within the housing wherein the rotor is configured to rotate within the sleeve; and
an electric motor system coupled to the hydraulic energy transfer system and configured to rotate the rotor, the electric motor system comprises:
a first magnet within the sleeve; and
a second magnet within the rotor, wherein interaction between the first magnet and the second magnet are configured to rotate the rotor.
2. The system of claim 1 , wherein the first fluid is a substantially particulate free fluid and the second fluid is a particulate laden fluid.
3. The system of claim 1 , wherein the hydraulic energy transfer system comprises a rotary isobaric pressure exchanger (IPX).
4. The system of claim 1 , wherein the first magnet comprises a permanent magnet or an electromagnet.
5. The system of claim 1 , wherein the second magnet comprises a permanent magnet or an electromagnet.
6. The system of claim 1 , comprising a controller with one or more modes of operation configured to control the electric motor system.
7. The system of claim 6 , 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.
8. The system of claim 6 , comprising a sensor configured to detect whether the hydraulic energy transfer system is rotating within a threshold range, wherein the controller couples to the sensor and controls the electric motor system in response to feedback from the sensor.
9. A system, comprising:
a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid, the rotary IPX comprises:
a housing;
a rotor within the housing and configured to exchange the pressures between the first fluid and the second fluid;
a sleeve within the housing wherein the rotor is configured to rotate within the sleeve; and
an electric motor system coupled to the rotary IPX and configured to rotate the rotor, the electric motor system comprises:
a first magnet coupled to an exterior surface of the housing; and
a second magnet within the rotor, wherein interaction between the first magnet and the second magnet are configured to rotate the rotor.
10. The system of claim 9 , wherein the first fluid is a substantially particulate free fluid and the second fluid is a particulate laden fluid.
11. The system of claim 9 , wherein the first magnet and the second magnet comprise permanent magnets and/or electromagnets.
12. The system of claim 9 , comprising a controller with one or more modes of operation configured to control the electric 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.
13. A method, comprising:
monitoring rotation of a rotor in a rotary isobaric pressure exchanger (IPX), the rotor being configured to exchange pressure between a first fluid and a second fluid;
detecting a condition when the rotor is rotating outside of a threshold range; and
operating a motor system coupled to the rotary IPX in response to the condition, wherein operating the motor system in response to the condition comprises operating a first magnet within a sleeve of the rotary IPX and a second magnet within the rotor of the rotary IPX to control rotation of the rotor.
14. The method of claim 13 , wherein monitoring rotation of the rotor comprises monitoring a flow sensor, a pressure sensor, a torque sensor, a rotational speed sensor, an acoustic sensor, a magnetic sensor, or an optical sensor with a controller.
15. The method of claim 13 , wherein operating the motor system in response to the condition comprises selecting additional modes of operation, and wherein the additional modes of operation comprise at least one of a speed control mode, a continuous power mode, or a periodic power mode.