A gas turbine engine includes: a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that includes an oil tank storing oil and supplies the oil to the main passage through which the compressed air flows to generate oil mist. The oil supply device includes: a pressure reducer disposed at the main passage; a bypass passage that bypasses the pressure reducer and connects an upstream passage and a downstream passage; a holding chamber disposed at the bypass passage and having a predetermined volume; a switching mechanism that permits or blocks communication between the holding chamber and the oil tank, communication between the holding chamber and the upstream passage, and communication between the holding chamber and the downstream passage; and a controller that controls the switching mechanism.

A gas turbine engine includes: a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that includes an oil tank storing oil and supplies the oil to the main passage through which the compressed air flows to generate oil mist. The oil supply device includes: a pressure reducer disposed at the main passage; a bypass passage that bypasses the pressure reducer and connects an upstream passage and a downstream passage; a holding chamber disposed at the bypass passage and having a predetermined volume; a switching mechanism that permits or blocks communication between the holding chamber and the oil tank, communication between the holding chamber and the upstream passage, and communication between the holding chamber and the downstream passage; and a controller that controls the switching mechanism.

The present invention relates to a device for recovering, separating and purifying oil mist in a minimum quantity lubricant (MQL) grinding process, comprising: an air separating mechanism, which comprises a pipeline and a fan fixedly connected with one end of the pipeline, wherein the fan is used for forming negative pressure in the pipeline, at least one conical filter mesh mechanism is arranged in the pipeline, and a tip of the conical filter mesh mechanism faces one side of an air inlet direction of the pipeline; and a filtering and recovering mechanism, which is connected with the pipeline and comprises a tank body, a filtering mechanism and a recovering mechanism, wherein the tank body is connected with the pipeline by a connecting part, and the filtering mechanism is connected with the recovering mechanism.

The present invention relates to a device for recovering, separating and purifying oil mist in a minimum quantity lubricant (MQL) grinding process, comprising: an air separating mechanism, which comprises a pipeline and a fan fixedly connected with one end of the pipeline, wherein the fan is used for forming negative pressure in the pipeline, at least one conical filter mesh mechanism is arranged in the pipeline, and a tip of the conical filter mesh mechanism faces one side of an air inlet direction of the pipeline; and a filtering and recovering mechanism, which is connected with the pipeline and comprises a tank body, a filtering mechanism and a recovering mechanism, wherein the tank body is connected with the pipeline by a connecting part, and the filtering mechanism is connected with the recovering mechanism.

A gas turbine engine includes: a casing that accommodates a compressor and the like; bearings; a main lubricator including an oil mist generator that generates oil mist by mixing oil with compressed air extracted from the compressor and a first supply passage through which the oil mist is guided to the bearings; and a starting lubricator including a second supply passage through which a gas flowing out from a gas source is guided to a connection portion of the first supply passage, the connection portion being connected to the second supply passage, and an opener that starts supply of the gas from the gas source. The main lubricator supplies the oil mist to the bearings through the first supply passage by the pressure of the compressed air extracted from the compressor. When the opener starts the supply of the gas, the starting lubricator supplies the oil mist to the bearings by the pressure of the gas flowing out from the gas source.

Oil console equipment includes: a lubrication oil tank in which a lubrication oil is stored; a lubrication oil supply line which is connected to the lubrication oil tank and through which a liquid lubrication oil stored in the lubrication oil tank is supplied to a bearing supporting a rotor; a first cooler which is provided in the lubrication oil supply line and cools the liquid lubrication oil supplied to the bearing; a lubrication oil recovery line which is connected to the lubrication oil tank and through which the lubrication oil recovered from the bearing is introduced into the lubrication oil tank; a first atmosphere discharge pipe which is connected to the lubrication oil tank and through which a lubrication oil mist which exists in a gas phase in the lubrication oil tank and is a misted lubrication oil and a first exhaust gas containing a gas are introduced out.

The invention relates to the field of rail transport. The present method for protecting wheelsets and a railroad bed from wear consists in applying, for the purpose of protecting coupling components under mutual friction from wear, an anti-wear coating that consists of ductile metals in the form of films on the frictional surface of said coupling components. A device for controlling the supply of a metal-plating ionisation solution emits a signal for activating or deactivating an electromagnetic valve mounted on a heated air duct connected to a reservoir that contains said metal-plating ionisation solution. The advantages of the present invention consist in more effectively protecting working surfaces from mechanical and hydrogen wear.

A minimum quantity lubrication (MQL) tool including a lance. The lance includes a passageway and an orifice. The passageway extends axially from a first end of the lance toward a second end of the lance and allows a lubricant supply to flow therein from the first end of the lance toward the second end of the lance. The first orifice extends radially through the lance at a location near the second end of the lance. The lubricant supply flowing through the passageway exits the orifice and is impinged upon by air flowing around the lance.

A minimum quantity lubrication (MQL) tool including a lance. The lance includes a passageway and an orifice. The passageway extends axially from a first end of the lance toward a second end of the lance and allows a lubricant supply to flow therein from the first end of the lance toward the second end of the lance. The first orifice extends radially through the lance at a location near the second end of the lance. The lubricant supply flowing through the passageway exits the orifice and is impinged upon by air flowing around the lance.

A lubrication system for a mechanical system, the lubrication system comprising a main tank, a reserve tank and a main lubrication circuit. The main lubrication circuit comprises, in particular, a pump drawing in the lubricating liquid from the main tank via a main suction point and a main suction pipe connecting the main suction point to the pump. The reserve tank is supplied with lubricating liquid either directly from the main tank or via the main lubrication circuit. The reserve tank is connected to the main suction pipe via an outlet pipe and the reserve tank is located above the main suction point so that the lubricating liquid flows through the outlet pipe to the main suction pipe by gravity.