Abstract:
In a fluid pump or motor improvements are provided to the piston shoes therein to permit a higher pressure in the respective device. Other improvements are done to the hydrostatic bearings in radial piston or radial chamber type fluid motors and pumps. A further arrangement is, that plural pistons are applied to permit the use of two different fluids in the respective device. This leads also to the application of disc springs and their modification in a pump or motor to make the pumping of non-viscous fluids like water possible at very high pressure.
Abstract:
A radial piston machine wherein fluid flows through the cylinders which are provided in a rotor, the disclosure provides a radial bearing in the middle between a plurality of at least two radial cylinder groups. Thereby the former bearings which were provided on the ends of the rotor can be reduced to smaller sizes to carry a lower radial load. The provision of the bearing in the middle of the rotor prevents the former miniturization of the control bodies on the ends of the rotor. The control bodies can now be radially enlarged and the restriction of the flow through quantities of fluid through the control bodies is overcome. The devices are now able to operate with a better efficiency and power. In order to obtain these features the medial radial bearing in the middle between the cylinder group must be of the specific structures of this patent application.
Abstract:
In a vehicle or device a fluid motor is employed to drive rotary members, such as wheels, propellers, tracks. The motor is provided with an arrangement which includes a control means and an axially moveable member. By utilizing the control means for example by a flow of fluid, the axially moveable member is used to apply an action, which is not common to the usual operation of fluid motors. The arrangement may be used to arrest the rotor of the motor from rotation, when no pressure is in the driving fluid line. It may also be used to control the pitch of propellers with variable pitch arrangements. Also possible is to use the arrangement to automatically obtain an auto-rotation of rotor blades on vertical axes of vertically take off and landing vehicles, when the pressure in the fluid line to the motors for driving the motors drops below a predetermined minimum of pressure.
Abstract:
A fluid motor has working chambers which take in and expell a fluid. The fluid under pressure acts in working chambers to produce a torque and thereby to drive the motor, constituting with the associated parts the drive of the motor.At least one separated fluid line supplies fluid into a space which includes or operates an additional member provided on the fluid motor. The mentioned fluid line and space are able to operate independently of the drive system of the motor.It is thereby possible to operate over the fluid line, for example by remote control, the additional member on the motor independently of the fluid flow of the drive of the motor. The additional member is thereby able to do an additional work or function independently of the drive of the motor.In other embodiments of the invention, the additional member may work in unison or dependence on the fluid drive of the motor, when so desired. Instead of applying only a single separated fluid line a number of separated fluid lines can also be applied and may provide different actions of one or more additional members on the fluid motor.
Abstract:
Disclosed is an internal combustion engine comprising a first auxiliary combustion chamber formed in the cylinder head and connected to the main combustion chamber via a first connecting passage. The spark plug is located in the first connecting passage. The second auxiliary combustion chamber, having no spark plug, is formed in the cylinder head or in the piston. The second auxiliary combustion chamber is connected to the main combustion chamber via a second connecting passage. The second connecting passage opens into the main combustion chamber at a position upon which a burning jet injected from the first connecting passage does not directly impinge.
Abstract:
A rotary compressor includes a compressing unit including: an annular cylinder; an end plate having a bearing unit, and closing an end portion of the cylinder; an annular piston fitted in a rotation shaft in the bearing unit, performing an orbital motion inside the cylinder, and forming an operation chamber with the cylinder inner wall; and a vane protruding from a groove of the cylinder to the operation chamber, coming into contact with the annular piston, and partitioning the operation chamber into an inlet chamber and a compression chamber. The vane is formed of steel and has a diamond-like carbon layer on a sliding surface with respect to the annular piston. The annular piston is formed of Ni—Cr—Mo cast iron to which 0.15 wt % to 0.45 wt % of phosphorus is added, or formed of cast iron or steel, and has an iron nitride layer on its outer circumferential surface.
Abstract:
A liquid ring pump is provided that includes an annular housing having an inner surface forming a housing cavity. The annular housing is filled with an operating fluid during operation of the pump. The operating fluid forms an eccentric liquid ring in the annular housing during operation of the pump. A rotor is disposed in the housing cavity and includes a plurality of rotor blades. A shaft extends into the annular housing into the housing cavity. The plurality of rotor blades extend radially outward from the shaft toward the inner surface of the annular housing. A liner formed from a corrosion resistant material is disposed substantially flush with at least a portion of the annular housing inner surface opposite a plurality of rotor blade ends.
Abstract:
Oilfield equipment is provided that includes a base material less subject to abrasion, corrosion, erosion and/or wet fatigue than conventional oilfield equipment materials such as carbon steel, and a reinforcing composite material for adding stress resistance and reduced weight to the oilfield equipment.
Abstract:
A fluid pump includes a motor, an inner gear rotor and an outer gear rotor. The inner gear rotor is driven for rotation about an axis by the motor and has a plurality of outwardly extending teeth. The outer gear rotor has a plurality of inwardly extending teeth that are engaged by the teeth of the inner gear rotor so that the outer gear rotor is driven for rotation about a second axis when the inner gear rotor rotates. At least one of the inner gear rotor and the outer gear rotor is formed from a plastic material.
Abstract:
A high pressure pump for use in the injection of liquid chemicals into subsea oil or gas wells, and intended to be positioned in the subsea environment adjacent to the wellhead, comprises a piezoelectric actuator (19) for reciprocating a plunger (22) which acts to compress and expand the effective volume of a pumping chamber (29) having a valved inlet (15) connected to a source of the liquid and a valved outlet (16) to lead the liquid to the well. The device has a minimum of moving parts and in particular avoids the need for any rotating parts and attendant high performance bearings and seals.