A fracturing apparatus and a fracturing system are provided. The fracturing apparatus includes: a plunger pump configured to pressurize a fracturing fluid to form a high-pressure fracturing fluid; a turbine engine coupled to the plunger pump and configured to provide a driving force to the plunger pump; an auxiliary unit including a driving electric motor, the auxiliary unit being configured to provide the fracturing apparatus with at least one selected from the group consisting of start-up assist function, lubrication function, cooling function, and air supply function; and a power supply electrically coupled to the driving electric motor of the auxiliary unit to provide driving power.

A plunger, a hydraulic end and a plunger pump are disclosed. The plunger includes a plunger body, the plunger body includes a flow channel; a first liquid inlet hole is located in the plunger body and passes through the sidewall of the plunger body; the plunger body includes a first end portion and a second end portion, a flow channel extends from the first end portion to the second end portion, a part of the flow channel close to the first end portion is closed, the flow channel extends to the second end portion and forms a first opening, the first liquid inlet hole is communicated with the flow channel, the first valve assembly is located at the first opening, and is configured to allow fluid to flow out from the flow channel at the first opening and prevent fluid from flowing back to the flow channel from outside.

A plunger, a hydraulic end and a plunger pump are disclosed. The plunger includes a plunger body, the plunger body includes a flow channel; a first liquid inlet hole is located in the plunger body and passes through the sidewall of the plunger body; the plunger body includes a first end portion and a second end portion, a flow channel extends from the first end portion to the second end portion, a part of the flow channel close to the first end portion is closed, the flow channel extends to the second end portion and forms a first opening, the first liquid inlet hole is communicated with the flow channel, the first valve assembly is located at the first opening, and is configured to allow fluid to flow out from the flow channel at the first opening and prevent fluid from flowing back to the flow channel from outside.

A fuel injection pump includes: a tappet configured to reciprocate by rotation of a cam; a cylinder that supports the tappet to reciprocate; and a plunger configured to reciprocate with the tappet. The tappet includes: a tappet body supported by the cylinder to reciprocate; a pin supported on both sides in an axial direction of the pin by the tappet body; a roller rotatably fitted to an outer peripheral side of the pin; a washer disposed between at least one end surface of the roller in the axial direction and an inner peripheral surface of the tappet body. The washer has at least one protrusion to be in contact with a stopper of the tappet body in either of two rotational directions.

A fuel injection pump includes: a tappet configured to reciprocate by rotation of a cam; a cylinder that supports the tappet to reciprocate; and a plunger configured to reciprocate with the tappet. The tappet includes: a tappet body supported by the cylinder to reciprocate; a pin supported on both sides in an axial direction of the pin by the tappet body; a roller rotatably fitted to an outer peripheral side of the pin; a washer disposed between at least one end surface of the roller in the axial direction and an inner peripheral surface of the tappet body. The washer has at least one protrusion to be in contact with a stopper of the tappet body in either of two rotational directions.

A lubricant reservoir for a compressor, which can be part of a system of a heat pump, in particular, a high-temperature heat pump, having a holding chamber for lubricants with at least one holding-chamber cladding element at least partially outwardly limiting the holding chamber, and a temperature controller is integrated into the holding-chamber cladding element and/or arranged on it, wherein a heating and/or cooling medium can flow through the temperature controller, which may achieve an improved life cycle assessment in such a lubricant reservoir compared to the known systems, reduce the production or assembly effort, and enable lubricant cooling and lubricant heating.

A lubricant reservoir for a compressor, which can be part of a system of a heat pump, in particular, a high-temperature heat pump, having a holding chamber for lubricants with at least one holding-chamber cladding element at least partially outwardly limiting the holding chamber, and a temperature controller is integrated into the holding-chamber cladding element and/or arranged on it, wherein a heating and/or cooling medium can flow through the temperature controller, which may achieve an improved life cycle assessment in such a lubricant reservoir compared to the known systems, reduce the production or assembly effort, and enable lubricant cooling and lubricant heating.

The present application relates to a plunger pump, and the technical field of high-pressure media transport equipment. The plunger pump comprises a fixed component, a motion component and a fault diagnosis module, the motion component is provided on the fixed component, and the motion component is movable relative to the fixed component. The fault diagnosis module comprises a temperature sensing component and a processing unit, the fixed component is provided with one or more temperature detection holes, the temperature sensing component is at least partially located in the one or more temperature detection holes, and the temperature sensing component is contactable to lubricating oil flowing through the motion component; the processing unit is connected to the temperature sensing component, and the processing unit performs monitoring and fault diagnosis on the plunger pump based on a temperature value sensed by the temperature sensing component.

The present application relates to a plunger pump, and the technical field of high-pressure media transport equipment. The plunger pump comprises a fixed component, a motion component and a fault diagnosis module, the motion component is provided on the fixed component, and the motion component is movable relative to the fixed component. The fault diagnosis module comprises a temperature sensing component and a processing unit, the fixed component is provided with one or more temperature detection holes, the temperature sensing component is at least partially located in the one or more temperature detection holes, and the temperature sensing component is contactable to lubricating oil flowing through the motion component; the processing unit is connected to the temperature sensing component, and the processing unit performs monitoring and fault diagnosis on the plunger pump based on a temperature value sensed by the temperature sensing component.

Provided is a linear compressor. The linear compressor includes a cylinder disposed in a shell to define a compression space for a refrigerant, a piston installed to reciprocate in the cylinder, a motor assembly that allows the piston to move in an axial direction of the cylinder and thereby to compress the refrigerant introduced into the compression space, a nozzle which is provided in the cylinder and through which a portion of the refrigerant introduced into the compression space passes, and a cylinder filter installed in the cylinder and disposed at an inlet-side of the nozzle. At least one or more surfaces of the cylinder filter are oil-repellent coated.