Abstract: A compressor system includes: a driving machine including a drive shaft that rotates around an axis; a high-pressure compressor driven by transmission of rotation of the drive shaft and configured to compress a fluid; and a low-pressure compressor disposed on an opposite side of the driving machine with the high-pressure compressor interposed therebetween in an axial direction in which the axis extends and driven by transmission of rotation of the drive shaft. The high-pressure compressor includes a high-pressure bundle including a high-pressure rotor shaft that rotates around the axis together with the drive shaft and a plurality of high-pressure impellers, and a high-pressure casing. The low-pressure compressor includes a low-pressure bundle including a low-pressure rotor shaft that rotates around the axis together with the drive shaft and the high-pressure rotor shaft and a plurality of low-pressure impellers, and a low-pressure casing.

Abstract: A heat exchanger has a case body that includes an outer peripheral wall, a medium inlet, and a medium outlet, wherein an open surface is formed on one side in an erecting direction of the outer peripheral wall, and a lid body that is joined to the case body to cover the open surface. The medium flow path is formed between the case body and the lid body. The case body has a flow path partitioning portion. An outer wall end surface which is an end surface of the outer peripheral wall on a side of the open surface and a partition end surface which is an end surface of the flow path partitioning portion on the side of the open surface are formed continuously with each other. The lid body is joined to the case body at the outer wall end surface and the partition end surface.

Abstract: A compressor train of chemical plants includes: a compression unit which is driven to compress a process gas of the chemical plants; a steam turbine which is rotated by steam generated in accordance with the processing of the process gas of the chemical plants to drive the compression unit; a motor which is able to assist the rotation of the steam turbine; and a frequency conversion unit which is connected to an electric power system and controls the rotation of the motor.

Abstract: A compressor system includes: a compressor provided with a rotor and a stator forming, by covering the rotor, a flow path of a fluid to be compressed; and a sacrificial member disposed in an accommodation space in communication with the flow path. The sacrificial member includes a portion to be measured disposed in the accommodation space and strained by a pressure of the fluid.

Abstract: A compressor train of chemical plants includes: a compression unit which is driven to compress a process gas of the chemical plants; a steam turbine which is rotated by steam generated in accordance with the processing of the process gas of the chemical plants to drive the compression unit; a motor which is able to assist the rotation of the steam turbine; and a frequency conversion unit which is connected to an electric power system and controls the rotation of the motor.

Abstract: A compression system includes a compressor that compresses a synthesis gas to produce a compressed gas, a first line that supplies a first gas constituting the synthesis gas to the compressor, a second line that supplies a second gas constituting the synthesis gas to the first line, a discharge line that circulates the compressed gas, a recirculation line that recirculates a part of the compressed gas from the discharge line to the first line, a first regulating valve arranged in the first line, a second regulating valve arranged in the second line, a discharge valve arranged in the discharge line, a recirculation valve arranged in the recirculation line, and a valve control device that performs switching between the first regulating valve, the second regulating valve, the discharge valve, and the recirculation valve based on an operation condition of the compressor.

Abstract: A compression system includes a compressor that compresses a synthesis gas to produce a compressed gas, a first line that supplies a first gas constituting the synthesis gas to the compressor, a second line that supplies a second gas constituting the synthesis gas to the first line, a discharge line that circulates the compressed gas, a recirculation line that recirculates a part of the compressed gas from the discharge line to the first line, a first regulating valve arranged in the first line, a second regulating valve arranged in the second line, a discharge valve arranged in the discharge line, a recirculation valve arranged in the recirculation line, and a valve control device that performs switching between the first regulating valve, the second regulating valve, the discharge valve, and the recirculation valve based on an operation condition of the compressor.

Abstract: Provided is a seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft. The seal device includes an annular main body section disposed in a circumferential direction of the rotary shaft, and a plurality of at least two kinds of holes formed in an inner circumferential surface of the main body section opening and facing to the outer circumferential surface of the rotary shaft, and having different depths.

Abstract: Provided is a seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft. The seal device includes an annular main body section disposed in a circumferential direction of the rotary shaft, and a plurality of at least two kinds of holes formed in an inner circumferential surface of the main body section opening and facing to the outer circumferential surface of the rotary shaft, and having different depths.