60results about How to "Speed up closing" patented technology

The invention provides an electric pressure boosting energy storage cabin door actuating system. The electric pressure boosting energy storage cabin door actuating system comprises a pressure boosting energy storage device and a transmission device (2); the pressure boosting energy storage device comprises a one way pump-two way motor (3), a first one way valve (4), an energy accumulator (5), a switch valve (6), a servo valve (7), a second one way valve (8) and an oil tank (9); the one way pump-two way motor (3) can suck oil from the oil tank (9) through the second one way valve (8), and the energy accumulator (5) is filled with the oil through the first one way valve (4); the switch valve (6) is used for controlling an oil way between the energy accumulator (5) and the servo valve (7) to be connected or disconnected; the servo valve (7) is used for controlling the oil in the energy accumulator (5) to drive the one way pump-two way motor (3); and the one way pump-two way motor (3) is further used for driving the transmission device (2).

The invention discloses a kind of high-speed high flux gas slide valve. Two electromagnets are set in the valve cavity at the two sides of the valve core symmetrically, the hollow valve core has a valve cover, one end of the valve core can open and close with one end of the electromagnet, there is a magnetic pole at the other end of the valve core, the magnetic pole can open and close with the other electromagnet, there are noncircular gap valve meatuses with the same quantity, breadth and interval on the interface of valve core and valve cover, the valve meatus connects with the oulet. The hollow valve can decrease the weight; the availability of the electromagnet power is high.

The invention provides an electro-hydraulic-servo-driven valve controlling device. The valve controlling device comprises a pinion-and-rack hydraulic cylinder, two sets of electro-hydraulic servo power sources and an electronic control part. The electronic control part comprises a controller, a displayer, a control switch and an angle transducer, wherein the displayer, the control switch and the angle transducer are connected with the controller. The angle transducer is fixed to the upper portion of the pinion-and-rack hydraulic cylinder. A rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of the angle transducer. The rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of a valve. Each set of electro-hydraulic servo power source comprises a bidirectional gear quantitative hydraulic pump, an alternating-current servo motor, a pressure oil tank and a double-hydraulic control one-way valve which are connected with the controller. Output shafts of the alternating-current servo motors and input shafts of the hydraulic pumps are connected. The pressure oil tanks are communicated with low-pressure oil suction openings of the hydraulic pumps through the one-way valves. Two outlets of the bidirectional gear quantitative hydraulic pumps of the two sets of electro-hydraulic servo power sources are communicated with the hydraulic cylinder through the double-hydraulic control one-way valves. The valve controlling device has the beneficial effects of being good in reliability, capable of saving energy and efficient.

A valve has a closure member for closing a valve orifice, particularly so as to be tight against gas, in a closed position of the closure member. The closure member can be moved in a closing process by at least one actuator starting from a first position of maximum opening at least along a first partial distance with a linear movement component in direction of its closed position, and the actuator carries out a closing stroke with a linear stroke direction for a movement of the closure member with this movement component. The actuator is so arranged in relation to the closure member that an angle diverging from 0° and 180° is provided between the linear movement component of the closure member along the first partial distance, proceeding from the first position of maximum opening, and the linear stroke direction of the actuator.

The invention discloses a drain valve comprising a motor, a cam, a connecting rod and a water valve. The cam is mounted on an output shaft of the motor, a connecting rod shaft is arranged on the cam, one end of the connecting rod is mounted on the connecting rod shaft, the other end of the connecting rod is mounted on a piston of the water valve, and a spring sleeving the connecting rod is arranged between the piston of the water valve and an end cap. The drain valve further comprises an acceleration mechanism which is arranged in the motor and can accelerating closing of the piston, driven by the cam, of the water valve. Since the acceleration mechanism is arranged in the motor of the cam, closing of the piston is accelerated to enable the piston to be closed more tightly, and leakage is avoided effectively.

The invention belongs to a valve structure and particularly relates to a high pressure exhaust check valve for an ultra-supercritical thermal power generating unit. The valve has the advantage that a valve cavity is in the shape of a reversed cone, and the valve cavity liquid accumulation problem is effectively solved. When the valve flow is small, the high pressure exhaust check valve achieves a forced opening function. An execution mechanism of the high pressure exhaust check valve includes two linear stroke cylinders matched with corresponding connection rod poking fork mechanisms, linear stroke is converted into angular stroke ingeniously, so that the high pressure exhaust check valve can be quickly closed and forcedly opened under lower pressure, flowing capability of the valve is ensured, and the check valve has the advantages of being reliable in sealing, long in service life and the like. A 30-degree inclination angle is adopted in a seat ring hole of a valve body, and operation characteristics of valve performance are improved. Compared with the 5-degree dip angle design of a traditional check valve, the high pressure exhaust check valve can provide larger initial sealing specific pressure to generate low pressure drop and improve valve sealing performance.

The present invention provides a novel electrically-controlled oil injector, comprising an electromagnetic valve, a control piston, a control cavity, a one-way valve, a needle valve cavity, an oil nozzle, a high-pressure oil line and a low-pressure oil line; the high-pressure oil line includes three branches, one branch leads to the control cavity through an oil inflow hole and then leads to the low-pressure oil line through an oil outflow hole, another branch leads to the oil nozzle through a lower end valve of the control piston, the remaining branch leads to the oil nozzle needle valve cavity through the one-way valve and then leads to the low-pressure oil line through a throttle hole, and the control piston is never rigidly connected with the oil nozzle. The novel electrically-controlled oil injector has the advantages that pressure of the oil nozzle needle valve cavity is turned into low pressure so that it is possible to reduce opening resistance for an oil nozzle needle valve; the control piston is used to actively control opening and closing of the high-pressure oil line leading to the oil nozzle so that it is possible to reduce closing resistance for the oil nozzle needle valve; the one-way valve is used to increase an oil line leading to the upper end control cavity of the oil nozzle so that it is possible to increase closing power for the oil nozzle needle valve. It is possible to greatly increase the opening and closing speed of the oil nozzle needle valve, thereby increasing oil injection.

The invention discloses a fireproof door closer comprising a sliding table assembly, a hydraulic assembly and a straight beam. One end of the straight beam is cooperatively installed with a slide seat of the sliding table; the other end of the straight beam is cooperatively installed with the hydraulic assembly; a door plate installation seat is installed on the front side of the hydraulic assembly; the door plate installation seat is cooperatively installed with the top of the door plate of the fireproof door; and a sliding rail of the sliding table assembly is cooperatively installed with a door frame. The sliding table assembly is driven by a motor via combination between a lead screw and a coupler and greater power can be produced; the front side of the hydraulic assembly is connected with the fireproof door plate via the door plate installation seat and then joined with the sliding table assembly via cooperation between the straight beam and the sliding seat of the sliding table assembly; with cooperated use between the sliding table assembly and the hydraulic assembly, when a door seam is opened for the hydraulic assembly, the sliding table assembly can pull the fireproof door open, so speed of fireproof door close can be improved to a large extent.

The invention relates to an advanced ceramic pipe type defueling pump, comprising a pump cylinder, a plunger piston, an upper traveling valve assembly, a lower traveling valve assembly and a strandingvalve assembly. The advanced ceramic pipe type defueling pump is characterized in that the inner wall of a steel-based pipe of the pump cylinder is provided with an advanced ceramic protection layerwith high temperature resistance, abrasion resistance and corrosion resistance, which is used as an lining; the outer surface of a rod body of the plunger piston is previously provided with grooves atintervals, alloy coatings with abrasion resistance and corrosion resistance is sprayed on the grooves, and zirconia toughening alumina ceramic rings are embedded into the surfaces of the alloy coatings inside the grooves.

The invention provides a shutter and an imaging device. The shutter comprises a first mounting plate, a synchronizing ring, multiple first blades and multiple driving devices. A shutter opening is provided on the first mounting plate, and a plurality of the first blades is arranged around the shutter opening.Each of the first blades is rotatably connected with the first mounting plate. The drivingdevices are arranged around the shutter opening, and each of the driving devices is drivingly connected with the synchronization ring. The synchronizing ring is drivingly connected with each of the first blades. Each driving device drives the synchronizing ring to drive at the same time, and then drives each first blade to rotate, so as to realize the opening or closing of the shutter opening. Compared with only one driving device, the power and volume of a single driving device are reduced while the overall output of the driving device is strengthened, thereby increasing the torque of the synchronization ring. The rotation speed of the synchronization ring and the first blades is increased, and finally speed of opening and closing of the shutter is increased.

A driving circuit configured to control at least one switch element is disclosed in the present disclosure. The driving circuit includes a first voltage generating circuit, a second voltage generating circuit and a driving voltage generating circuit. The first voltage generating circuit is configured to generate a first voltage signal. The second voltage generating circuit is configured to generate a second voltage signal. The driving voltage generating circuit is electrically coupled with the first voltage generating circuit and the second voltage generating circuit. The driving voltage generating circuit outputs at least one driving voltage signal according to the first voltage signal and the second voltage signal. The at least one driving voltage signal comprises three levels. At least one level of the levels is lower than zero level.

The invention discloses a high-pressure buffering air cylinder. The high-pressure buffering air cylinder comprises a cylinder body, an inverted-L-shaped left piston and an L-shaped right piston are movably arranged in the cylinder body, wherein an upper driving rack is arranged on the lower surface of a cantilever of the left piston, a lower driving rack is arranged on the upper surface of a cantilever of the right piston, and a transmission gear is arranged between the cantilever of the left piston and the cantilever of the right piston; a left end cover and a right end cover are arranged at the two sides of the cylinder body, an air intake through hole is formed in the left end cover, and an air intake and exhaust port communicated with the air intake through hole and the space between the left piston and the left end cover is formed in the left end cover; an air supply through hole communicated with the air intake through hole is formed in the cylinder body, and the other end of the air supply through hole is communicated with the space between the right piston and the right end cover; and a positioning hole is formed in the middle of the end face of the left piston, a buffering guide column is movably arranged in the positioning hole, a buffering spring is arranged between the buffering guide column and the bottom of the positioning hole, a buffering block is arranged at the end of the buffering guide column, a buffering sealing gasket is arranged in the buffering block, and a positioning ring matched with the buffering sealing gasket is arranged on the left end cover.