US 11,795,949 B2
Liquid level height detection in a gas-liquid separator of a liquid supply type gas compressor
Kenji Morita, Tokyo (JP); Masahiko Takano, Tokyo (JP); and Shigeyuki Yorikane, Tokyo (JP)
Assigned to Hitachi Industrial Equipment Systems Co., Ltd., Tokyo (JP)
Appl. No. 17/280,693
Filed by Hitachi Industrial Equipment Systems Co., Ltd., Tokyo (JP)
PCT Filed Mar. 26, 2019, PCT No. PCT/JP2019/012698
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/070910, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 2018-187887 (JP), filed on Oct. 3, 2018.
Prior Publication US 2022/0003236 A1, Jan. 6, 2022
Int. Cl. F04C 29/00 (2006.01); F04C 29/02 (2006.01); F25B 13/00 (2006.01)
CPC F04C 29/0014 (2013.01) [F04C 29/026 (2013.01); F25B 13/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A liquid supply gas compressor comprising:
a compressor body that compresses a gas while injecting a liquid into a compression chamber;
a gas-liquid separator that separates the liquid from the compressed gas, which is discharged from the compressor body, to store the liquid;
a liquid piping system that supplies the liquid, which is stored in the gas-liquid separator, to the compressor body;
an internal pipe that extends in an internal space of the gas-liquid separator, and includes at least two hole portions, of which disposition positions are different from each other in a height direction, on an internal space side to communicate with the liquid piping system;
a sensor that detects a pressure or a temperature of a fluid flowing through the liquid piping system;
a controller that generates a determination result by performing at least one of a determination as to whether or not the pressure or the temperature detected by the sensor is more than a first set value set in advance and a determination as to whether or not the pressure or the temperature detected by the sensor is less than a second set value which is set in advance to be less than the first set value, to determine which one of the gas and the liquid is the fluid flowing through the liquid piping system; and
a displayer that notifies a determination result of the controller.