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99results about How to "Simplify the startup process" patented technology

Speed-regulated pressure exchanger

InactiveUS20070137170A1Efficient operating stateMinimal mixing lossPump componentsGas turbine plantsMechanical engineeringPressure exchanger
A pressure exchanger for transferring pressure from a higher pressure liquid in a first liquid system to a lower pressure liquid in a second liquid system having a housing (8) with inlet and outlet connection openings (10-10.3) for each liquid and a rotor (1) arranged in the housing for rotation about a longitudinal axis. The rotor has a plurality of through channels (13) arranged around the longitudinal axis with openings (12) on axial end faces (2, 3) of the rotor. The rotor channels (13) are connected to the connection openings (10-10.3) through flow openings (11-11.3) in the housing such that during rotation of the rotor high pressure liquid and low pressure liquid are alternately supplied to the respective systems. A predominantly axially extending flow transition is formed between the flow openings (11-11.3) in the housing and the openings (12) of the rotor channels (13), and the flow openings in the housing form part of curved cavities (19) with each cavity (19) simultaneously covering several rotor channel openings (12) and having a shape which equilibrates the liquid flow speed in the vicinity of the housing flow openings (11-11.3). External surfaces (5-5.3) of the rotor (1) have an energy converting or energy transmitting configuration (6), and a partial flow (TS) of high pressure and/or flow energy impinging on the configuration (6) produces rotation of the rotor (1). A regulator (7) the varies the amount of the partial flow (TS) and the rotational speed of the rotor (1) and controls the rotational speed of the rotor for substantially shock-free admission of the mass flow into the rotor channels (13).
Owner:KSB AG

Speedometer-assisted vehicle-mounted dynamic alignment method

ActiveCN108180925AAvoid the limitations of standing stillIncrease flexibilityDistance measurementGyroscopeSimulation
The invention relates to a speedometer-assisted vehicle-mounted dynamic alignment method. The method is technically characterized by comprising steps as follows: in an inertial navigation system, inertial navigation calculation is performed, and attitude heading, speed and position information is output and updated; mileage decomposition is performed by use of an attitude angle of vehicle displacement increment output and inertial navigation calculation of a speedometer, and speedometer navigation position calculation is completed; an error model of the inertial navigation system and an errormodel of navigation position calculation are taken as equations of propagation of an error state, an attitude angle error of the inertial navigation system is estimated and calibrated by use of a Kalman filter. Deep integration is performed through the Kalman filter by use of displacement increment information provided by the vehicle-mounted speedometer and gyroscope and accelerator data providedby an inertial measurement assembly, in the running process of a vehicle, a combined navigation technology of accurate alignment of attitude heading and correction function of position errors is completed, the starting process of the vehicle-mounted navigation system can be simplified, the reaction time is shortened and the maneuvering characteristics of a carrying vehicle are improved.
Owner:TIANJIN NAVIGATION INSTR RES INST

Reactivity control method of pebble-bed high-temperature gas cooled reactor and telescopiform control rod

The invention discloses a reactivity control method of a pebble-bed high-temperature gas cooled reactor and a telescopiform control rod. The invention discloses the telescopiform control rod arranged at a side reflective layer of a reactor and capable of realizing cold shutdown independently. The control rod comprises an inner rod, an outer rod, and a guide barrel assembly which are vertical and coaxial, wherein the outer rod and the guide barrel assembly are hollow cylindrical objects, the top end of the inner rod is capable of moving up and down in the outer rod, and the other end of the inner rod is positioned below the guide barrel assemble and is capable of moving up and down in a control rod channel coaxial with the guide barrel assembly along with the top end of the inner rod; the top end of the outer rod is capable of moving up and down in the guide barrel assembly, and the other end of the outer rod is capable of moving up and down in the control rod channel along with the top end of the outer rod. In the premise of not changing a pressure vessel height and an overall design parameter of other existing modular pebble-bed high temperature gas cooled reactors, the effective control of the control rod can be maximally improved, the reactivity value of the control rod system is improved; meanwhile, the starting and running control operation of the modular pebble-bed high-temperature gas cooled reactor are simplified, and the technological base is established for the safety and economic running of a high-temperature reactor plant.
Owner:TSINGHUA UNIV

Relay node non-access stratum processing method and equipment

The invention discloses a relay node non-access stratum processing method and equipment. The method comprises the steps that after access equipment is determined to be a relay node by a mobility management entity, when the access cell of the mobility management entity and the relay node on an evolved node B supports the relay node, the evolved node B is informed about that a network has been already prepared; after the evolved node B is determined to be selected as a serving gateway/packet data network gateway for the relay node, an indication that the network has been already prepared is transmitted to the relay node; when the relay node is informed about that the network has been already prepared, the relay node keeps the built connection with a packet data network; and when the relay node is not informed about that the network has been already prepared, the relay node conducts a detaching process to release the existing connection with the packet data network and conducts an attaching process to rebuild new connection with the packet data network. The relay node non-access stratum processing method and the equipment have the advantages that the starting process of the relay node can be simplified, the starting time of the relay node is shortened and the unnecessary signaling process and bearer management are reduced.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Method and device for starting application programs

The invention discloses a method and a device for starting application programs and belongs to the technical field of computers. The method comprises the following steps of acquiring statistic usage data of each application program; determining a preset number of application programs according to the statistic usage data of each application program; displaying application icons of the preset number of application programs on a lock screen interface; when designated operation is detected, determining a target application program according to the operation trajectory of the designated operation; unlocking the lock screen interface, and starting the target application program. According to the method, the preset number of application programs are determined according to the statistic usage data of each application program, the application icons of the preset number of application programs are displayed on the lock screen interface, when the designated operation is detected, the target application program is determined, the lock screen interface is unlocked, and the target application program is started. Due to the fact that the application programs can be started in the unlocking process according to the statistic usage data of a user, the starting flow of the application programs is simpler, and the starting efficiency is higher.
Owner:GUANGZHOU KUGOU TECH

Device, method, and system for compressed air control and compressed air supply

The invention relates to a compressed air control device (2) and to a compressed air control method for controlling respective operating states of a compressor (6) and of an air drying device (8) in a vehicle. The compressed air control device (2) has a compressor control outlet (36), by means of which the compressed air control device can be pneumatically connected to a control inlet of the compressor (6) in order to pneumatically switch the operating state of the compressor (6). The compressed air control device (2) further comprises a system pressure inlet (28), by means of which the compressed air control device can be pneumatically connected to a system pressure line (21), which conducts a system pressure produced by the compressor (6). The compressed air control device (2) further comprises a ventilation control outlet (36), by means of which the compressed air control device can be pneumatically connected to a control inlet of the air drying device (8) in order to pneumatically switch the operating state of the air drying device (8). Finally, the compressed air control device (2) also comprises a pneumatically operable ventilation control valve (14), by means of which the system pressure inlet (21) can be pneumatically connected to the ventilation control outlet (36) depending on the system pressure in order to switch the operating state of the air drying device (8). According to the invention, an electrically operable supply control valve (12) is provided in the compressed air control device (2).; By means of the supply control valve, the system pressure inlet (28) can be pneumatically connected to the compressor control outlet (62) independently of the system pressure in order to switch the operating state of the compressor (6). Thus, energy-saving operation of a compressed air supply system (4) comprising the compressed air control device (2) and the air drying device (8) by means of a compressed air supply method containing the compressed air control method is possible.
Owner:WABCO GMBH

Large-scale impact power generation device group frequency conversion starting device

The invention discloses a large-scale impact power generation group frequency conversion starting device, and belongs to the field of mechanical equipment. An impact power generation device is also called a short circuit power generation device which is used for providing heavy short circuit current for a high-voltage switch and a transformer to perform type tests. Soft starting of a high-voltage asynchronous motor is a difficult point in the project. Formerly, a loop of a motor rotor is connected in series with multiple paths of resistors, and each path of resistor is connected gradually in a shorting way in the starting process so that soft starting is realized. The scheme is high in device investment, low in operation efficiency, large in operation maintenance amount and not high in control accuracy, and cannot provide 60Hz operation working state. In order to solve defects in the prior art, the invention provides the large-scale impact power generation device group frequency conversion starting device. An H-bridge scheme of series connected power units is adopted. Components of the device comprise a switch cabinet, a transformer cabinet, a power cabinet and a control cabinet. Problems in the prior art that the conventional scheme is high in device investment, low in operation efficiency, large in operation maintenance amount and not high in control accuracy, and cannot provide 60Hz operation working state are solved.
Owner:洛阳华明变压器有限公司

Sensorless permanent-magnet synchronous motor starting control method and corresponding system

The invention relates to a sensorless permanent-magnet synchronous motor starting control method and a corresponding system. The method comprises the following steps of (1) setting a current command I of a q axis of a permanent-magnet synchronous motor stator side in vector control to be 0, and controlling a current command I of a d axis within a rated current value of a set multiple; (2) gradually increasing a given value Angle of a planned rotor angle to 360 degrees from 0 degree; and (3) judging whether starting of a permanent-magnet synchronous motor is completed or not; if the motor starting is completed, entering the vector control of a voltage outer ring and a current inner ring; if the motor starting is not completed, returning back to the step (1) and starting again. A method based on current closed-loop control is used for zero correction on a motor rotor, the permanent-magnet synchronous motor is controlled according to the currents of the q axis and the d axis of the permanent-magnet synchronous motor stator side, and the over-current is prevented since the currents of the q axis and the d axis can be controlled; the motor can be ensured to be prevented from being out-of-step during the starting process by planning the rotor angle and reasonably using constant angle acceleration step size.
Owner:XUJI GRP +3
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