A high-pressure unit (HPU) skid includes one or more hydraulic pumps, a grease pump, a hydraulic reservoir, and two or more accumulators all mounted on a portable frame. The HPU skid also includes fluidic connections to connect one or more valves to an output of the grease pump and fluidic connections to connect one or more valves to an output of at least one of the two or more accumulators. The accumulators are configured to close at least one of the one or more valves using a charged pressure. The HPU skid further includes fluidic connections to connect one or more valves to at least one of the one or more hydraulic pumps. The hydraulic pumps are configured to withdraw hydraulic fluid from the hydraulic reservoir for charging the accumulators, operating the grease pump, charging the accumulators and operating the grease pump at a same time, or operating one or more valves.

A high-pressure unit (HPU) skid includes one or more hydraulic pumps, a grease pump, a hydraulic reservoir, and two or more accumulators all mounted on a portable frame. The HPU skid also includes fluidic connections to connect one or more valves to an output of the grease pump and fluidic connections to connect one or more valves to an output of at least one of the two or more accumulators. The accumulators are configured to close at least one of the one or more valves using a charged pressure. The HPU skid further includes fluidic connections to connect one or more valves to at least one of the one or more hydraulic pumps. The hydraulic pumps are configured to withdraw hydraulic fluid from the hydraulic reservoir for charging the accumulators, operating the grease pump, charging the accumulators and operating the grease pump at a same time, or operating one or more valves.

A lubrication system comprises a lubricant reservoir, a lubricant supply passage fluidly connecting the lubricant reservoir and a space requiring lubrication, and a lubricant supply pump. The supply pump includes a piston having a first piston head slidably received in a chamber in fluid communication with the lubricant reservoir and a second piston head slidably received in a pumping chamber. The pumping chamber is divided into a first and second cavities by the second piston head. The first cavity is between the first piston head and second piston head. The first and second cavities are placeable in fluid communication with pressure sources externally of the pumping chamber to provide a pressure differential between the first cavity and the second cavity, whereby the piston may move as a result of the pressure differential to cause the first piston head to dispense lubricant from the lubricant reservoir to the space.

A lubrication system comprises a lubricant reservoir, a lubricant supply passage fluidly connecting the lubricant reservoir and a space requiring lubrication, and a lubricant supply pump. The supply pump includes a piston having a first piston head slidably received in a chamber in fluid communication with the lubricant reservoir and a second piston head slidably received in a pumping chamber. The pumping chamber is divided into a first and second cavities by the second piston head. The first cavity is between the first piston head and second piston head. The first and second cavities are placeable in fluid communication with pressure sources externally of the pumping chamber to provide a pressure differential between the first cavity and the second cavity, whereby the piston may move as a result of the pressure differential to cause the first piston head to dispense lubricant from the lubricant reservoir to the space.

The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

A lubricant injector includes an injector body having an inlet port fluidly coupleable with a lubricant supply, an outlet port fluidly coupleable with a lubrication point, a piston chamber and a valve chamber. A piston is disposed within the piston chamber and defines a measuring section and an actuating section, the piston being linearly displaceable along an axis through the piston chamber so as to inversely vary the volume of the chamber measuring section and the volume of the chamber actuating section. A valve member disposed within the valve chamber is displaceable along an axis through the valve chamber between a first position, at which the inlet port is fluidly coupled with the piston chamber actuating and measuring sections, and a second position at which the inlet port is fluidly coupled with the piston chamber actuating section and the outlet port is fluidly coupled with the piston chamber measuring section.

A lubricant injector includes an injector body having an inlet port fluidly coupleable with a lubricant supply, an outlet port fluidly coupleable with a lubrication point, a piston chamber and a valve chamber. A piston is disposed within the piston chamber and defines a measuring section and an actuating section, the piston being linearly displaceable along an axis through the piston chamber so as to inversely vary the volume of the chamber measuring section and the volume of the chamber actuating section. A valve member disposed within the valve chamber is displaceable along an axis through the valve chamber between a first position, at which the inlet port is fluidly coupled with the piston chamber actuating and measuring sections, and a second position at which the inlet port is fluidly coupled with the piston chamber actuating section and the outlet port is fluidly coupled with the piston chamber measuring section.

A lubrication apparatus for a component is provided. The lubrication apparatus includes a base positioned on a support. The lubrication apparatus further includes a chamber disposed on a first portion of the base. The chamber includes a lubrication section and a first storage section coupled to the lubrication section. The lubrication apparatus further includes a first sensor unit disposed on a second portion of the base. The lubrication apparatus further includes a fluid actuation mechanism coupled to the first sensor unit. The fluid actuation mechanism includes an actuation member disposed in the first storage section.

A lubrication apparatus for a component is provided. The lubrication apparatus includes a base positioned on a support. The lubrication apparatus further includes a chamber disposed on a first portion of the base. The chamber includes a lubrication section and a first storage section coupled to the lubrication section. The lubrication apparatus further includes a first sensor unit disposed on a second portion of the base. The lubrication apparatus further includes a fluid actuation mechanism coupled to the first sensor unit. The fluid actuation mechanism includes an actuation member disposed in the first storage section.

A lubricant pump includes a housing mountable to the upper end of a lubricant container and having a vertical central bore, an outlet passage extending between the central bore and an outlet port fluidly connectable with the lubricant distributor and a vent chamber having an inlet and an outlet. A vent inlet passage extends between the central bore and the vent chamber inlet and a vent outlet passage extends between the vent chamber outlet and a vent outlet port fluidly connectable with a container cavity. A movable valve element is disposed within the vent chamber and displaceable along an axis between a position in which the valve element obstructs the chamber inlet and/or the chamber outlet and a second position in which the chamber inlet is fluidly connected with the chamber outlet to provide an internal flow path from the central bore to the vent outlet port.