An impeller-type liquid ring compressor having a particular bearing configuration. Such a bearing arrangement may completely support the impeller as it rotates, eliminating many of the problems inherent in the prior art designs without changing the general overhung impeller design. This may allow the impeller-type liquid ring compressor to be easily retrofitted in existing use environments, such as, for example, oil and gas processing facilities, oil refineries, and petrochemical processing facilities. In some exemplary embodiments, a thrust bearing may be located on the front face of the impeller, or radial bearings may be disposed between the vanes of the impeller. A radial bearing and thrust bearing may further be disposed on the shaft side of the impeller close to the impeller itself. The compressor may be configured so that the process fluid carries heat away from each of these bearings.

The present invention relates to a two-stage liquid ring vacuum pump in which two-stage impellers are attached to an axial end portion of a main shaft (rotating shaft) of a motor. The two-stage liquid ring vacuum pump includes a first-stage impeller (4) provided in a first-stage pump chamber (1), a second-stage impeller (5) provided in a second-stage pump chamber (2), a single rotating shaft (7) to which the first-stage impeller (4) and the second-stage impeller (5) are fixed, and an exhaust port (Pd) of the first-stage pump chamber (1) and an intake port (Ps) of the second-stage pump chamber (2) which communicate with each other. An outer diameter of the first-stage impeller (4) is larger than an outer diameter of the second-stage impeller (5).

Disclosed is a component-replaceable water ring vacuum pump in which inner components within a head unit may be disassembled and replaced without separation of the head unit from a main body, thus shortening an operation time and improving operation efficiency through prevention of leakage of an inner liquid during a replacement process. The water ring vacuum pump includes a main body provided with a shaft, a rotor rotated together with the shaft within the main body, a head unit coupled to both sides of the main body, a guide bearing provided within the head unit, and a mechanical seal configured to block inner gas. A bearing bracket to support the guide bearing is detachably fastened to one side of the head unit by a bolt, and an inner cap and an outer cap are assembled to the inner and outer surfaces of the bearing bracket by fixing bolts.

Dry pumps are used to pump a variety of gas mixtures from the semiconductor industry. The present invention provides a liquid ring pump located between the dry pump and an abatement device to remove soluble corrosive materials prior to the exhaust gases entry to the abatement device, the work fluid exhausted from the liquid ring pump being separated from the gas prior to entry to the abatement device.

The present disclosure provides a pump-assisted degassing system, a vacuum degassing tower, and a water system having the same. The degassing system comprises a vacuum pump, connected with a degassing tower through a main pipeline, and configured to pump out a gas-liquid mixture from the degassing tower; a gas-liquid separator, connected with the vacuum pump in a closed loop through a circulation pipeline, and configured to perform gas-liquid separation on the gas-liquid mixture; and a booster pump, arranged on the main pipeline between the vacuum pump and the degassing tower, and configured to assist the vacuum pump to pump out the gas-liquid mixture. The vacuum pump and the booster pump constitute a two-stage pumping device. Only one vacuum pump is needed in the system, and the vacuum pump requires less circulating water and less motor power resulting in lower the equipment load loss in the operation efficiency.

Liquid ring systems are known for compressing gasses. However, known systems include seals on moving surfaces that require high precision manufacturing. A liquid ring rotor is provided and methods of operating the same. A liquid ring rotor for a liquid ring system is provided and comprises a shaft, and one or more fluid diverting members. The shaft includes a hollow interior portion, the hollow interior portion having a first opening and a second opening, the second opening disposed in a surface that extends along a length of the shaft and spaced apart from the first opening in the length of the shaft, wherein the shaft is configured to enable a working fluid to pass along the shaft through the hollow interior portion between the openings.

A control system comprising: a liquid ring pump; a motor configured to drive the liquid ring pump; and a controller configured to: determine an electrical current within the motor; determine a speed of the motor; calculate a value of a function, the function being a function of the determined electrical current within the motor and the determined speed of the motor; and output one or more control signals based on the calculated value of the function.

A system comprising: a liquid ring pump (10) comprising: a chamber (102); a suction inlet; an exhaust outlet; and an operating liquid inlet; a gas line (36) coupled to the liquid ring pump (10); a valve (8) disposed on the gas line (36); a first sensor (81) configured to measure a first parameter of the inlet fluid; a second sensor (82) configured to measure a second parameter of either the operating liquid, the exhaust fluid, or a fluid within the chamber; and a controller (20) configured to: determine a vapour pressure of the operating liquid using the second parameter; and control operation of the valve (8) based on the first parameter and the vapour pressure.

Liquid ring systems are known for compressing gasses. However, known systems include seals on moving surfaces that require high precision manufacturing. A liquid ring rotor is provided and methods of operating the same. A liquid ring rotor for a liquid ring system is provided and comprises a shaft, and one or more fluid diverting members. The shaft includes a hollow interior portion, the hollow interior portion having a first opening and a second opening, the second opening disposed in a surface that extends along a length of the shaft and spaced apart from the first opening in the length of the shaft, wherein the shaft is configured to enable a working fluid to pass along the shaft through the hollow interior portion between the openings.

Disclosed is a component-replaceable water ring vacuum pump in which inner components within a head unit may be disassembled and replaced without separation of the head unit from a main body, thus shortening an operation time and improving operation efficiency through prevention of leakage of an inner liquid during a replacement process. The water ring vacuum pump includes a main body provided with a shaft, a rotor rotated together with the shaft within the main body, a head unit coupled to both sides of the main body, a guide bearing provided within the head unit, and a mechanical seal configured to block inner gas. A bearing bracket to support the guide bearing is detachably fastened to one side of the head unit by a bolt, and an inner cap and an outer cap are assembled to the inner and outer surfaces of the bearing bracket by fixing bolts.