Cascade type heat pump system for oil-water separation of oil field and control method of cascade type heat pump system

• Main Authors: HE JIANQI, MENG QINGLIANG, ZHOU, MINGJIE, MAO SHOUBO
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

The invention relates to the technical field of cascade heat pumps, in particular to a cascade heat pump system for oil-water separation of an oil field and a control method of the cascade heat pump system, and aims at solving the problem that an existing cascade heat pump system for oil-water separation of the oil field is low in operation energy efficiency. Therefore, the cascade heat pump system comprises a high-pressure refrigerant circulation loop, a low-pressure refrigerant circulation loop, an oil heat preservation water circulation loop and a first water tank, the oil heat preservation water circulation loop comprises a first water circulation branch and a second water circulation branch, and the two ends of the first water circulation branch and the two ends of the second water circulation branch are connected with the first water tank; the first water circulation branch and the second water circulation branch exchange heat with the high-pressure refrigerant circulation loop and the low-pressure refr