123results about "Engine of intermeshing engagement type" patented technology

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement. Applications include vehicle suspension systems (to act as the primary damper component), railcar bogie dampers, or industrial applications such as machinery dampers and wave energy harvesters, and electro-hydraulic actuators.

The present invention relates to a single-screw machine for the compression and / or expansion of a gas, comprising a housing in which a central screw (2) and at least one star rotor (3) are rotatably mounted. The central screw (2) has spiral grooves (21) on its circumference (22), which have an open end (212) and a closed end (211). The star rotor (3) has teeth (31) that engage with the spiral grooves (21) and move along the spiral grooves (21) when the central screw rotates. A recess (23) is provided in the central screw (2) at the closed end of each spiral groove (21), into which the teeth (31) of the star rotor (3) do not project when moving along the spiral groove (21).

A screw compressor or expander is provided, comprising a female rotor (414) including a first section having a right-hand first groove and a second section having a left-hand second groove. The first groove has a first variable helix, the second groove has a second variable helix, and the female rotor has a first variable profile and a first variable outer diameter. The screw compressor or expander further comprises a male rotor (410) including a third section having a left-hand first lobe and a fourth section having a right-hand second lobe. The first lobe has a third variable helix, the second lobe has a fourth variable helix, and the male rotor has a second variable profile and a second variable outer diameter.

To provide a screw rotor which is lighter, more resistant to corrosion, and easier to manufacture in complex forms, than conventional metal screw rotors.SOLUTION: A screw rotor 1 is made of polymer. The screw rotor 1 includes a shaft 2 and a rotor body 3 thereon. The polymer of the shaft 2 is reinforced with fibers. The shaft 2 is characterized by elements 5a that engage the rotor body 3 or corresponding elements on the rotor body 3, such that the elements 5a prevent an axial and / or rotational movement of the shaft 2 with respect to the rotor body 3.SELECTED DRAWING: Figure 1

The invention discloses a rotary piston type pneumatic motor, relates to the technical field of pneumatic motors, and solves the problems that an existing pneumatic motor is complex in structure, large in size, heavy in weight and high in price, the rotary piston type pneumatic motor comprises an air cylinder shell, a main shaft and a blade rotor body, and the main shaft is rotationally installed in the air cylinder shell; the blade rotor body is arranged in the cylinder shell and is rotationally mounted on the eccentric shaft part of the main shaft through a sleeve; the sleeve, the gear shaft and the blade rotor body are in key connection; the blade rotor body is located at the eccentric position of the main shaft, the blade rotor body is driven by an external gas path to rotate in the air cylinder shell, specifically, gas is introduced into the air cylinder shell through the gas path to drive the blade rotor body to rotate, and the internal gas inlet, gas compression and gas exhaust processes are achieved based on the size change of a cavity space formed between the eccentric rotary piston and the cylinder body; and the main shaft is driven to rotate through a gear transmission structure, so that power output is realized.

System (1) for producing work, heating and / or cooling, comprising a heat engine (2) for producing mechanical work, having a plurality of gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) provided with teeth (D), defining working chambers (20) for expanding a fluid, and arranged to mesh with each other, a generator or alternator (15), connected to the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) of the heat engine (2) by means of at least one mechanical shaft, for converting into electric current the mechanical work of rotation of the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) induced by the direct thrust of the fluid on the teeth (D), a heat exchanger (3, 4), connected via a conduit to the heat engine (2), to cool and / or heat the fluid, a pump (5) having a plurality of compression stages for compressing the fluid and connected via a conduit to the heat exchanger (3, 4) and via a further conduit to the heat engine (2), a motor (14) to drive the pump (5); the system (1) being characterized in that the teeth (D) of the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) of the heat engine (2) are provided with dynamic gas seals (21) between the working chambers (20) to keep the fluid, which is in supercritical conditions, confined in a single working chamber (20) while it expands between the teeth (D) that form said working chamber (20); and the stages of the pump (5) are provided with dynamic gas seals (5b) between one stage and the other to keep the fluid, which is in supercritical conditions, confined to a single stage while it is compressed.

A rocker arm internal combustion engine is provided with a cylinder block, a fixed arm, a rotor, a rocker arm, and a cover, in which the rotor is attached to the inside of the cylinder block, the cylinder block is provided with a fixed arm, and the rotor is provided with a rocker arm, and the cylinder block, fixed arm, rotor, rocker arm, and cover form a combustion chamber, which is an enclosed space. [Means] The rocker arms sequentially enter the combustion chamber and seal it. The combustion chamber is provided with a spark plug, an oil outlet, and an air intake. The cylinder block or cover is provided with an exhaust port. The pressure in the combustion chamber drives the rocker arms to rotate the rotor. The rocker arm internal combustion engine may be used in place of a turbine in a hydroelectric power plant, or in the inner duct of a turbofan engine.

An internal combustion rotary engine comprising a housing, at least one sun wheel centered about the central axis and positioned within one of at least one cylindrical compartment of the housing, and including a sun wheel circumference and at least one semicylindrical receptable defined along the sun wheel circumference, at least one lobe extending from an inner cylindrical surface of the compartment, and at least one planet wheel received in the at least one semicylindrical receptable of the sun wheel. The at least one planet wheel may be configured to engage the inner cylindrical surface of the cylindrical compartment and include at least one indentation configured to be received by the at least one lobe when the at least one planet wheel rotates along the inner cylindrical surface. Air intake and compression as well as combustion and exhaust may be performed within the same or different compartments of the at least one cylindrical compartment.

The invention relates to the technical field of energy utilization, in particular to a distributed combined cooling heating and power system and a control method thereof. The system comprises a power generation circulation loop, a heating loop, an absorption type refrigeration loop and path switching valves, all the loops are connected through the path switching valves, the power generation circulation loop utilizes a screw expander to replace a turbine for power generation, the technical bottleneck of miniaturization of the combined cooling heating and power system is solved, meanwhile, the control method of the system is further provided, and the energy utilization rate is improved based on energy cascade application. Three system use modes are designed, the comprehensive energy utilization efficiency and the economic performance of the combined cooling heating and power system are improved, and energy conservation and emission reduction are achieved.

The invention discloses a rotor of a high-pressure-ratio double-screw machine and the double-screw machine. Rotors of the screw machine comprise a female rotor and a male rotor, rack lines of the female rotor and the male rotor are formed by smoothly connecting nine sections of curves end to end, and the nine sections of curves sequentially comprise a circular arc section AB, a circular arc section BC, a circular arc section CD, an elliptic arc section DE, a parabolic arc section EF, a circular arc section FG, an elliptic arc section GH, a circular arc section HI and a circular arc section IJ. The nine-section tooth curve of the female rotor and the nine-section tooth curve of the male rotor are obtained by converting the nine-section curve on the rack line from a rack line coordinate system to a rotor coordinate system. According to the invention, the male rotor and the female rotor can be optimally meshed in the working process, two adjacent sections of tooth curves are in smooth transition at a connecting point, the rotor area utilization coefficient is relatively large, the contact line is relatively short, the leakage triangle is relatively small, and the molded line is streamlined, so that the working efficiency of the screw machine is improved.

The invention relates to the technical field of power machinery, and particularly discloses a gear rocker arm steam turbine (gear steam turbine for short). Different from the inclination acting force of a connecting rod on a crankshaft in a traditional piston internal combustion engine and the inclination impact force of a working medium on blades in a steam turbine / gas turbine, through the unique rocker arm mechanism design, it is ensured that driving force generated by working of the working medium can be efficiently and directly transmitted to an output shaft all the time in the direction of directly acting on a rocker arm. According to the design, the decomposition loss of force is reduced to the maximum in principle, and the force transmission efficiency close to 100% can be achieved theoretically, so that a structural foundation is laid for achieving extremely high thermodynamic efficiency. The invention aims to provide a novel solution with high power density, high thermal efficiency and wide fuel adaptability for the field of power machinery. Successful application of the device is expected to replace part of traditional piston internal combustion engines, fuel cells and steam turbines in many energy conversion scenes, and a new technical path is provided for improving the energy utilization efficiency and reducing carbon emission.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

A high-order spiral combined twisted lobe Roots rotor, compressor and expander. The rotor includes a female rotor and a male rotor with the same profile structure. The two rotors can achieve continuous and correct meshing during the meshing process of reverse rotation. The tooth profile A1B1C1D1E1 of a single tooth of one rotor is composed of a spiral envelope line segment A1B1, a spiral line segment B1C1, a spiral line segment C1D1 and a spiral envelope line segment D1E1 connected in sequence. The complete rotor profile is formed by rotating the single-tooth profile A1B1C1D1E1 around the origin of its rotor profile by #imgabs0# and then connecting the head and tail with the single-tooth profile A1B1C1D1E1. z represents the number of teeth of different rotor profiles. The rotor profile of the present invention has five adjustable profile parameters, including the spiral order, the number of rotor teeth, the rotor center distance and two profile geometric parameters, and has a greater optimization space in terms of profile design and adaptability; according to the needs of the design working conditions, the shape of the rotor profile can be flexibly adjusted to improve the volumetric efficiency, energy-saving performance and dynamic characteristics.

Satellite pump whose body is divided into at least two parts constituting bodies, characterized in that, in the rear body (3) there is a suction duct (KS) placed coaxially with the rear body (3), at least two inner ducts (KW) routed throughout the whole length of the rear body (3) and ring duct (KP) routed in the rear body (3) adjacent to the rear compensation plate (6) and coaxially with the shaft (7). The invention also comprises a ring-shaped compensation chamber (KK) which is adjacent to the rear compensation plate, while the suction duct's (KS) has diameter not larger than the inner diameter of the central body (2) both in the case when the front body (1) and the central body (2) constitute one part, and in the case when the front body (1) and the central body (2) constitute two separate parts and moreover. The inner ducts (KW) connect the suction duct (KS) with the ring duct (KP) and the ring duct (KP) is connected with the suction holes routed in the rear compensation plate (6).

The present application relates to an internal combustion engine operating on the rotary principle, wherein at least one piston rotates on a circular piston path within an annular cylinder chamber bounded by a cylinder wall, passing through various zones of the cylinder chamber. On one full revolution of the internal combustion engine, corresponding to a complete rotation of the piston on its piston path (360°), an air-fuel mixture is ignited behind the piston in a combustion zone of the cylinder chamber. Later, during the same revolution, air located in front of the piston is compressed by the piston in a compression zone of the cylinder chamber. The compressed air is drawn into the piston and transported by the piston along its path into the combustion zone. There, the compressed air is discharged from the piston into the combustion zone and used to form the air-fuel mixture.

A device for controlling torques arising in a mechanical system, comprising: first and second terminals couplable respectively with first and second parts of the mechanical system; coupled to the first terminal, a housing enclosing a chamber for containing a fluid; coupled to the second terminal, a shaft rotatably coupled to the housing; a rotor coupled to the shaft; and a fluid path coupled to the chamber; wherein the device is configured such that, when in use: the fluid is caused to flow along the fluid path in response to relative rotational motion between the first and second terminals, thereby generating an inertial force due to the mass of the fluid, and the inertial force causes equal and opposite inertance torques to be applied at the first and second terminals respectively, the inertance torques being torques whose magnitude are substantially proportional to the relative rotational acceleration between the first and second terminals.

A vane pump (1) for handling fluids, comprising: - a containment body (2) defining a suction line (3), a feed line (4) and a containment volume (5) interposed between said suction line (3) and said feed line (4), - a rotor (6) arranged within said containment volume (5) and comprising at least two vanes (7) defining volumes of fluid for handling said fluid, - and an assembly of fixed elements (8) interposed between said containment volume (5) and said rotor (6). The vane pump further comprises at least one interference element (9) interposed between said containment body (2) and said assembly of fixed elements (8) and housed, at least partially, in said containment body (2) and / or in said assembly of fixed elements (8), and said interference element (9) is housed, at least partially, in said suction line (3) and / or in said feed line (4).

A rotor housing for a twin-screw extruder comprises a housing body, a high-pressure orifice end face part, a female rotor cavity wall part, and a male rotor cavity wall part. The high-pressure orifice end face part, the female rotor cavity wall part, and the male rotor cavity wall part are detachably disposed in the part cavity of the housing body and together define the rotor cavity. A high-pressure axial ventilation orifice is provided on the side of the high-pressure orifice end face part. The female and male rotor cavity wall parts are non-enclosed along their circumferences, with the open side of the female rotor cavity wall part abutting the open side of the male rotor cavity wall part, and one end of the female and male rotor cavity wall parts abutting the high-pressure orifice end face part. A first and a second notch are provided at each end of the female rotor cavity wall part, respectively, and a third and a fourth notch are provided at each end of the male rotor cavity wall part, respectively. The first and third notches together constitute a high-pressure radial ventilation orifice, and the second and fourth notches together constitute a low-pressure radial ventilation orifice. The present invention achieves internal volume ratio adjustment of a twin-screw extruder at a relatively low cost.

The utility model discloses a pipeline generator with an impeller and a rotor coaxial. The pipeline generator comprises an impeller cavity, a power generation cavity and a transmission cavity. Two sets of mutually-meshed impellers are installed in the impeller cavity, the ends of impeller shafts of the two sets of impellers are connected with synchronous gears in a meshed mode, and the two sets of impellers are driven to rotate synchronously under the action of the synchronous gears. Wherein the impeller shaft of any group of impellers is coaxially provided with a rotor, and the rotor synchronously rotates along with the impeller shaft. After the pipeline generator is adopted, fluid enters the impeller cavity from the middle of the air inlet hole to push the impellers to rotate, and the two impellers synchronously rotate through meshing of the two synchronous gears; when the impellers rotate, the rotor rotates at the same time, transmission gears between the impellers and the rotor are reduced, operation under the working conditions of large torsion and high rotating speed can be adapted, the impeller can be suitable for operation under the working conditions of sub-high pressure, high pressure grade and high speed, and meanwhile the impeller has the advantages of being simple in structure, low in cost and the like. And the fault rate is low.

A rotary engine is provided, comprising a planar housing with a circular center cavity, a pair of rotary wall valves flanking and overlapping the circular center cavity and centered on an axis extending through the circular center cavity, a truncated ellipsoid rotor rotatably mounted within the circular center cavity, and fore and aft cover plates flanking the planar housing.

The present patent application describes a system containing a mechanism composed of a hydraulic sleeve (2) inside which a rotating piston disc (4) is mounted such that it is positioned off-centre, said disc housing a set of hydraulic swing pistons (5) distributed around the outer perimeter thereof. The mechanism pertains to the field of mechanical engineering and can generate high torque on the drive shaft (10). It can be used by any machine or piece of equipment that uses a hydraulic motor, using low pressure and flow for the good performance thereof, and as the diameter of the hydraulic swing-piston motor increases, the effect of the torque generated is even greater within the established dimensional proportion. By using less hydraulic oil in order to operate, the motor contributes to reducing CO2 emissions in both the manufacturing of hydraulic oil and the generation of electrical energy.

A pressing tool (210; 310) for mounting a screw rotor (200) in an axial inlet bearing (201) of a screw element for compressing a gas with a predefined maximum head clearance (X'; X"), characterized in that the pressing tool (210; 310) comprises a group of first support points and a group of second support points, wherein the first support points are positioned such that, when mounting the screw rotor (200), they contact a head face (205) of the screw rotor (200) and exert pressure on the head face (205) in a direction towards the axial inlet bearing (201), wherein the second support points are positioned such that, upon completion of mounting the screw rotor (200), they contact a first coupling surface (212) of a housing of the screw element, and wherein the first support points and the second support points are positioned relative to each other such that, upon completion of mounting the screw rotor (200), the head face (205) and the high-pressure end face (207) are at a perpendicular distance from each other, equal to the maximum head clearance (X'; X").

The present invention provides a hydrogen fuel cell pneumatic motor energy recovery device, comprising a gear pump, a generator, an air knife injector and a spray water pipe. An air inlet is provided at the left end of the gear pump body, and an exhaust port is provided at the right end of the body; the air inlet pipe of the air knife injector is connected to the air inlet of the body, and the upper air knife edge of the air knife injector is provided on the upper arc-shaped inner wall surface of the body; the lower air knife edge of the air knife injector is provided on the lower arc-shaped inner wall surface of the body, and a spray water pipe is connected to the air inlet pipe of the air knife injector. The high-pressure hydrogen gas ejected by the air knife injector drives the upper gear shaft and the lower gear shaft to rotate, driving the generator to work. The hydrogen fuel cell pneumatic motor energy recovery device of the present invention recovers hydrogen energy with a high pressure difference through the air knife injector, has a simple structure, stable operation and high recovery efficiency.

A rotary piston machine includes a casing and a rotor assembly, each with a hypotrochoidal. The rotor assembly includes apices that conform to the hypotrochoidal profile of the casing, and the relative motion of the casing and the rotor assembly create variable volumes. The variable volume allows the rotary piston machine to function as a compressor, an expander, an internal combustion engine, a positive displacement pump, or a fluid-driven motor.

The present invention relates to an energy recovery device comprising: a gerotor; an electric generator operatively coupled to the gerotor; and one or more valves in fluid communication with a passage bypassing the gerotor, wherein at least one of the one or more valves is adapted to selectively open to limit a pressure applied to the gerotor by allowing a fluid to flow through the passage.

The utility model relates to the field of differential pressure power generation of a gas turbine pressure regulating station, and discloses excess pressure and waste heat utilization equipment based on a screw expander and a heat storage device, which comprises an upstream main pipe incoming gas, and a switch unit is arranged at the output end of the upstream main pipe incoming gas. One output end of the switch unit is connected with a screw expander through a first connecting assembly, a first heat exchanger is arranged at the output end of the screw expander, and the other output end of the switch unit is connected to one input end of the first heat exchanger through a second connecting assembly. A circulating water system is arranged at the other input end of the first heat exchanger and used for increasing the enthalpy value and the temperature of natural gas, and a second heat exchanger is arranged at one output end of the first heat exchanger. According to the utility model, the power generation system is used for generating power by utilizing the residual pressure and residual heat of the natural gas differential pressure, so that the residual energy in the natural gas conveying process is recovered, and the auxiliary power of a power plant can be supplemented.