43results about How to "Increase rate of ascent" patented technology

The invention discloses a pressure adjustor which comprises a shell. An adjusting cavity, a gas inlet cavity and a transition cavity are formed in the shell. A gas bag is arranged in the adjusting cavity. The adjusting cavity is communicated with the gas inlet cavity through a vent hole. The gas inlet cavity is communicated with the transition cavity through a small hole. Communicating holes are formed in the two sides of the gas inlet cavity. An ejector rod is arranged in the middle of the gas inlet cavity. The vertical section of the ejector rod is sleeved with a return spring. The top of the vertical section of the ejector rod penetrates through the vent hole and then upwards extends to be connected with the gas bag. A first ball is arranged at the bottom of the horizontal section of the ejector rod. A gasket is arranged on the inner wall of the gas inlet cavity. A sealing hole coaxial with the small hole is formed in the middle of the gasket. In order to solve the problem that in the prior art, during gas-lift production, high-pressure gas flow is not accurately adjusted, and then oil production efficiency is reduced, the different cavities are arranged for linkage control over high-pressure gas flow, so the circulation of high-pressure gas flow between a casing pipe and an oil pipe is more smooth, adjustment is more accurate, and gas-lift production efficiency is improved.

The present invention is a passive organic LED activating method. The method comprises the steps: starting to apply a voltage to the organic LED to increase its anode potential; detecting the anode potential of the organic LED; comparing the detected anode potential with a reference voltage; performing a pre-charging process to the organic LED through its anode using a voltage source if the anode potential is lower than the reference voltage; the pre-charging process is stopped when the anode potential of the organic LED reaches the predetermined reference voltage. The reference voltage can be a fixed external voltage, or can be obtained dynamically by sampling dynamically the outputting potentials of a fixed current source using a sampling holding circuit.

The invention discloses a charge transfer type sense amplifier. The charge transfer type sense amplifier comprises a compensating circuit unit, wherein the compensating circuit unit is connected between a power supply voltage and a column data line node for providing a compensating current; the compensating circuit unit has a structure that the compensating current can self-adaptively change basedon a voltage of the column data line node; when a memory unit is in a programming state, a pull-down current of the memory unit for the column data line node is reduced, the column data line node isrequired to reach a high potential, the higher the voltage of the column data line node is, the larger the compensating current is, and the larger the compensating current is, the higher the rate at which the column data line node rises to a target value is; and when the memory unit is in an erasing state, the pull-down current of the memory unit for the column data line node is increased, the column data line node is required to reach a low potential, the lower the voltage of the column data line node is, the smaller the compensating current is, and the smaller the compensating current is, the higher the rate at which the column data line node drops to the target value is. The charge transfer type sense amplifier disclosed by the invention can increase a change rate of the column data line node, thereby increasing a reading rate.

The invention discloses a high-frequency thyristor. The high-frequency thyristor comprises a thyristor; a monocrystalline silicon wafer is formed by an asymmetric structure of P+P1N1P2N2, wherein the graph in an N2 region is an involute graph; in the monocrystalline silicon wafer, an N type (100) crystal orientation low resistance monocrystalline silicon wafer is used; a P<+> layer is formed by grinding and thinning a P layer; the thickness of the P<+> layer is 15 microns, and the thickness of the P layer is 60 microns. In the modelling surface of the monocrystalline silicon wafer, the grinding angle of a positive oblique angle theta1 is more than or equal to 60 degrees and less than or equal to 80 degrees; and the grinding angle of a negative oblique angle theta2 is more than or equal to 3.5 degrees and less than or equal to 4.5 degrees. A titanium nickel gold evaporation coating is arranged on the end face of the P<+> layer, and the thickness of Ti is 0.2 micron, the thickness of Ni is 0.5 micron and the thickness of Au is 0.1 micron. A method for manufacturing the high-frequency thyristor comprises the following steps of: arranging a diffusion P layer on double faces of the monocrystalline silicon wafer, wherein the P<+> layer is formed by grinding and thinning the P layer on one face, and an N2 region photolithography mask graph has an involute plug-in amplification gate pole structure; controlling the minority carrier lifetime tp for the monocrystalline silicon wafer and the N2 region photolithography mask graph by using a gold expansion method and an electron irradiation method respectively; evaporating by using an electron beam to form the titanium nickel gold evaporation coating; and blasting sand in a large angel for modeling. By the invention, the application frequency of the thyristor and the quality of products are improved, and the requirements of energy conservation and consumption reduction are met.

The invention discloses an AC limiter and a current limiting method thereof. The AC limiter comprises an incoming line end, an outgoing line end, a vacuum arc extinguishing chamber, an operating mechanism, a current limiting reactor, an armature, a static contact, a movable contact, a connection rod, an iron core and a coil. The invention also discloses the current limiting method of the AC limiter. Power switch equipment and the current limiting reactor are integratedly designed, and the integral volume of equipment is reduced; and meanwhile, the reactance of the current limiting reactor is gradually increased during the acting process of the operating mechanism, TRV generated at two ends of the current limiting reactor is reduced, and an energy absorption lightning arrester connected inparallel to the current limiter is omitted. The AC limiter has the advantages of simple and compact structure, low cost, small size and the like.

The electro-magnetic driving apparatus 11 for controlling wefting in weaving machine comprises a releasing solenoid 14 for driving a moving workpiece 15 to a position for allowing releasing, and a stopping solenoid 13 for driving the moving work piece 15 to a position for stopping releasing. The number of winding coils of the releasing solenoid 14 is less than that of the stopping solenoid 13. Thus, comparing the releasing solenoid 14 with the stopping solenoid 13, the elimination of remaining current in the releasing solenoid 14 can be achieved faster. Therefore, for example, it is possible to accelerate a rise-up speed of a magnetizing current in the stopping solenoid 13 and further possible to increase the rise-up speed of the magnetizing current by means of a decrease of a mutual inductance.

The invention discloses an excitation power supply for suppressing an overshoot phenomenon of laser pulse. The excitation power supply comprises a control module, a switching power supply module and a resonance module, wherein the control module outputs a driving pulse signal with variable frequencies; after the driving pulse signal is processed by the switching power supply module, an alternating current square wave signal is output; and after the alternating current square wave signal is subjected to amplitude modulation by the resonance module, the alternating current square wave signal is converted into a periodical excitation signal which has a low electric level and then a high electric level in sequence in each period. The excitation signal output by the excitation power supply can suppress the overshoot phenomenon; meanwhile, the rise of the laser pulse becomes more steep, so that the requirement on the laser pulse output waveform in laser processing can be satisfied; and therefore, the excitation power supply is of great significance to the improvement of the laser pulse processing quality and efficiency.

In order to enable a lubricant to be supplied continuously to the contact area of one end of arm members and a cam surface, thus improving the lubrication capability at the contact area of the one end of the arm members and a cam member, and preventing wear, seizing and the like at the contact area of the one end of the arm members and the cam surface, a torsional oscillation damping device (1) has an annular part (21), which is attached to a disk plate (7) so as to surround a cam member (2) and arm members (16), and with which a portion of a grease (24) is held in the space between an inner circumferential part (21a) and the outer peripheral part of the arm members (16) in the radial direction when the grease (24) is scattered by centrifugal force and adheres to the inner circumferential part (21a) as the torsional oscillation damping device (1) rotates. Furthermore, the curved shape of the outer circumferential part (16c) of the arm members (16) is set with respect to the shape of the inner circumferential part (21a) of the annular part (21) such that when the arm members (16) turn so as to move one end part (16a) of the arm members (16) from the radially inward direction of the cam surface (2a) to the radially outward direction, the distance between the outer circumferential part (16c) of the arm members (16) and the inner circumferential part (21a) of the annular part (21) maintains a positional relationship wherein the distance increases gradually from the outer circumferential base point part (16d) of the arm members (16) toward the base end part (26a) of guide plates (26).

The invention discloses an electromagnetic heating system and a heating control method thereof, and a heating control device; the method comprises the following steps: obtaining a target duty ratio, and obtaining a duty ratio adjusting mode; when adjusting the duty ratio in a gradient mode, controlling the duty ratio of a control signal outputted to an IGBT tube to gradually drop to the target duty ratio from a preset duty ratio, controlling the electromagnetic heating system to work according to the gradually lowered duty ratio, controlling the duty ratio of the control signal to be at the target duty ratio after the target duty ratio is reached, and controlling the electromagnetic heating system to work according to the target duty ratio; in the electromagnetic heating system working process, sampling the work current of the electromagnetic heating system in a heating cycle corresponding to the gradually lowered duty ratio or the target duty ratio, and controlling the heating power of the electromagnetic heating system according to the sampled work current. The method can collect the proper current value, thus preventing pot-free misjudgement phenomenon of the electromagnetic heating system duo to the undersized current.

The invention relates to a flexible electric braking method of a large-sized water turbine generator, which is suitable for a controllable rectification excitation system adopting the parallel running of a plurality of excitation rectification bridges for meeting the capabilities of excitation and excitation forcing. The invention has the core that the complete input of the traditional rectification bridges is improved into partial input. Because the number of the parallel rectification bridges is reduced, the ascension rate of current flowing through thyristors in rectification bridges input in the running is also increased correspondingly, and the current of the thyristors in the controllable rectification bridges exceeds the latching current of the controllable rectification bridges before triggering pulses disappear, thereby solving the problem of braking failure caused by the hysteresis effect of the induction of rotors and the effect of the latching current of the thyristors and ensuring the safe running of a water turbine generator set.

The invention relates to a constant current control system comprising a DC power supply having a voltage E on loop ground G, a controller used for adjusting the c-e two-end voltage Vce according to an input voltage value Vr, a two-end current detector, and a two-end load; the two-end load, the c end and e end of the controller, and the two-end current detector are connected in series between the DC power supply voltage E and the loop ground G, thus forming a loop having a current I; the controller comprises a voltage drop regulator used for adjusting the c-e two-end voltage Vce and a shunt resistor connected in parallel with the c-e ends, wherein the shunt resistor resistance value is Rd; the constant current control system can reduce the current flowing through the voltage drop regulator in the controller, thus reducing the voltage drop regulator heat rate, and improving the constant current control system reliability.

The invention discloses a bean grinding and peeling device. The device comprises a machine body and a grinding wheel set arranged in the machine body, wherein an air drawing device is arranged above the grinding wheel set, an air flue is formed between the air drawing device and the grinding wheel set; the device further comprises a bean hull conveying device, wherein the bean hull conveying device comprises a conveying cylinder, the conveying cylinder is arranged in a hull storage box located at the upper end of the air flue, the conveying cylinder divides an inner cavity of the hull storagebox into an outer chamber and an inner chamber, the air flue is communicated with the inner chamber, and a plurality of one-way vent holes are formed in the side wall of the conveying cylinder, so that the outer chamber is communicated with the inner chamber, and air inlet ends of the one-way vent holes are communicated with the inner chamber; when the air drawing device extracts air in the outerchamber to generate negative pressure in the outer chamber, the one-way vent holes are opened, so that the air drawing device makes the bean hulls generated by the grinding wheel set to enter the outer chamber through the air flue and the one-way vent holes in sequence. The bean grinding and peeling device increases the separation rate between the bean hulls and bean meal due to the above structures.

The invention discloses a pressure regulator which comprises a shell. The shell is internally provided with an adjusting cavity, an air inlet cavity and a transition cavity, an air bag is installed inthe adjusting cavity, the adjusting cavity is communicated with the air inlet cavity through an air hole, the air inlet cavity is communicated with the transition cavity through a small hole, throughholes are formed in the two sides of the air inlet cavity, an ejecting rod is arranged in the middle of the air inlet cavity, a return spring sleeves the vertical section of the ejecting rod, the topof the vertical section of the ejecting rod penetrates through the air hole and extends upwards to be connected with the air bag, a first sphere is arranged at the bottom of the horizontal section ofthe ejecting rod, a gasket is arranged on the inner wall of the air inlet cavity, and a seal hole coaxial with the small hole is formed in the middle of the gasket. Aiming at the problem that when gas lift production is conducted in the prior art, adjustment on high pressure air flow is inaccurate, and then the oil-production efficiency is lowered is solved, by arranging different cavities, the high pressure air flow is subjected to linkage control, the high pressure air flow circulates between a sleeve and an oil pipe more smoothly, adjustment is more accurate, and then the gas lift production efficiency is improved.