389results about How to "Reduce mechanical load" patented technology

Disclosed are a model prediction control method and a model prediction control system for all working conditions of a wind generating set. The system comprises an MPC (model prediction control) device, a feedback information measurer, a wind wheel, a driving chain, a tower, a generating unit, a variable propeller driver and a converter. The feedback information measurer is used for detecting status variables of the wind wheel, the driving chain, the tower and the generating unit and transmitting detecting results to the MPC device, the MPC device is used for computing targets of the blade pitch angle and the generator torque, and the variable propeller driver and the converter are used for adjusting the blade pitch angle and the wind generator torque. The method is used for computing control increment by means of a variable propeller control prediction model and a torque control prediction model, takes the status variables including driving chain torsional displacement, driving chain torsional speed, blade plane external first-order flap displacement, blade plane external first-order flap speed, tower front-back first-order swing displacement, tower front-back first-order swing speed, mechanical loads of the unit and the like, and two prediction models can be automatically switched in different working conditions, so that the wind generating set can be operated in all working conditions.

A mixer for a separate-stream turbojet nozzle, the mixer comprising along a longitudinal axis (X-X′) both a fastener shroud (10) for connecting said mixer to the exhaust casing of the nozzle, and a lobe structure (20) presenting a succession of inner and outer lobes (22 and 21) distributed circumferentially around the longitudinal axis (X-X′) of the mixer. The lobe structure (20) is made of a ceramic matrix composite material and further comprises a stiffener ring (30) that forms a connection between at least some of the lobes of said structure. Thus, the major portion of the mixer, i.e. the lobe structure, is made of a ceramic matrix composite material, thereby significantly reducing the weight of the mixer, and consequently reducing the weight of the nozzle.

A turbine blade including an airfoil having a profile in accordance with Table 1 is disclosed. The turbine blade has a plurality of cooling passages extending radially outward through the airfoil. The aerodynamic profile of the airfoil has been reconfigured to reduce airfoil stress for a given operating temperature, thereby resulting in increased creep rupture life of the airfoil.

A telescopic device (1) has three telescopic segments, viz. an outer segment (2), an intermediate segment (4) and an inner segment (6). The inner segment (6) is arranged to be telescoped in the intermediate segment (4) by a first shifting device (8), the intermediate segment (4) in turn being arranged to be telescoped in the outer segment (2) by a second shifting device (10). The first and the second shifting device (8, 10) are mechanically connected to each other by a transmission connection (46) in such a manner that activation of one of the shifting devices (8; 10) causes simultaneous activation also of the other shifting device (10; 8) and simultaneous telescoping of the intermediate segment (4) in relation to the outer segment (2) and of the inner segment (6) in relation to the intermediate segment (4).

The invention provides methods and moulding devices for moulding three-dimensional products from a mass of foodstuff which is suitable for human consumption, in particular from a mass of meat, in particular chicken. The method comprises filling a mould cavity with a portion of the mass under the influence of a filling pressure exerted on the mass and for a filling period via a filling opening associated with the mould cavity, closing the filling opening of the mould cavity and holding the mass in the mould cavity for a fixing period. Then, the mould cavity is opened and the moulded product is removed from the mould cavity. The method uses fixing-pressure-exerting means which are designed to exert a fixing pressure which acts on the mass in the mould cavity after the filled mould cavity has been closed.

A method for controlling a wind power installation at very high wind speeds, in which there is predetermined a first wind speed at which the rotor blades of the wind power installation are put into a first predetermined setting. In addition, the method includes controlling the wind power installation during an extreme wind situation where the rotor blades moved to a position to reduce, as far as possible, mechanical loadings on the wind power installation caused by the extreme wind situation.

The invention relates to a tyre module for recording tyre condition variables, comprising a spring element (2) that is fixed on one side and a conversion unit (2, 3, 4, 6, 7), in which the displacement energy is converted into electric energy. The spring element (2) is configured as a rod spring, torsion spring or leaf spring and carries a seismic mass (3) on its free end. The spring element transmits acceleration steps of the seismic mass (3) to the conversion unit (2, 3, 4, 6, 7).

The invention belongs to the field of rice culturing and in particulates to a special soilless organic composite matrix for raising seedlings of japonica rice. The matrix taking agricultural wastes as materials comprises the following components in percentage by weight: 55%-65% of rice straw, 25%-35% of cow dung, 5%-10% of rice husk, 2%-3% of carbamide, 1.5%-2.0% of straw-decomposing inoculants, 15% of peat, 1%-3% of nitrogen phosphorus and potassium fertilizers, 0.015%-0.006% of seedling growing agent and 0.002% of root growth promoting agent. The special soilless organic composite matrix for raising seedlings of japonica rice has the advantages that the local agricultural wastes serve as the main raw materials, so that the matrix is available in material, low in transportation and production cost, facilitates the cyclic utilization of the agricultural wastes, reduces the pollution to the environment, completely solves the problems that the vegetation is damaged when soil is extracted for raising the seedlings and the soil is extracted difficultly and reduces the labor strength and cost for processing the extracted soil; in addition, auxiliary additives are organic non-toxic products, easy to degrade in a farmland ecosystem and free of secondary pollution; the matrix is long in time period suitable for planting the seedlings; the time period of the matrix suitable for planting the seedlings can be extended to 28 days; and the matrix is great in range of seedling ages and strong in adaptively in date of seeding.

An electron probe X-ray analyzer capable of automatically setting appropriate analytical conditions if there are unknown compounds by performing analysis under the analytical conditions adapted for analysis points having different compositions in a case where the numerous analysis points having the plural compositions are analyzed by WDS (wavelength-dispersive X-ray spectrometer). At each analysis point, the analyzer performs quantitative analysis using EDS (energy-dispersive X-ray spectrometer) permitting easy and quick analysis. Based on the results, chemical compounds are identified. If the results indicate that there is any new compound, analytical conditions adapted for the new compound are selected. If the new compound is already registered in a database, the analytical conditions are read from the database. Then, quantitative analysis is performed using WDS.

One aspect of the invention relates to a filter module comprising: —a filter element having at least one filter medium which separates a filtrate side and a retentate side of the filter element from one another, and having a filter medium holder to which the filter medium is attached and which has at least one holder intake channel and at least one holder discharge channel, —a first filter cartridge part having at least one first cartridge intake channel and at least one first cartridge discharge channel, —a second filter cartridge channel having at least one second cartridge intake channel and at least one second cartridge discharge channel, wherein the filter medium holder is arranged in an arrangement position between the first filter cartridge part and the second filter cartridge part in a fluid-tight manner, wherein the at least one holder intake channel has a fluid connection with the at least one first cartridge intake channel and the at least one second cartridge intake channel, in order to form a module intake channel, wherein the at least one holder discharge channel has a fluid connection with the at least one first cartridge discharge channel and the at least one second cartridge discharge channel, in order to form a module discharge channel, wherein the module intake channel has a fluid connection with the retentate side of the filter medium and wherein the module discharge channel has a fluid connection with the filtrate side of the filter medium, and a modular filter system.

A steam generator has a continuous heating surface located in a fuel gas channel that can be traversed in an approximately horizontal fuel gas directions. The continuous heating surface has a plurality of steam generator pipes that are connected in parallel for the passage of a flow medium and is designed in such a way that a steam generator pipe, which is heated to a greater extent than another steam generator pipe of the same continuous heating surface, has a higher throughput of the flow medium than the other steam generator pipe. The aim is to produce a low-cost steam generator with a particularly high level of mechanical stability, even when subjected to different thermal stresses. To achieve this, the or each steam generator pipe has a respective downpipe section, which is approximately vertical and through which the flow medium can flow downwards and a respective riser pipe section connected downstream of the downpipe on the flow medium side, which is approximately vertical and through which the flow medium can flow upwards.

Energy-recuperating vibration damper having a cylinder in which a displacer executes a limited operating movement in a working chamber so that a pressurized fluid is supplied to a fluid motor which drives a generator. A compensation chamber compensates for a change in volume of the pressurized fluid. A pressure accumulator is provided in addition to the compensation chamber, which pressure accumulator communicates with and is parallel-connected to the fluid motor.

A method of controlling a power plant connected at a point of connection to an electricity grid is provided. The power plant includes a renewable power production facility connected to a power storage facility. The method includes determining an active power grid demand of the electricity grid, obtaining operating data for the renewable power production facility and the power storage facility, determining, on the basis of the grid demand and the operating data, active power transfer quantities to be transferred between the renewable power production facility and the power storage facility and/or from the power plant facility to the grid, computing active power references for the facility of the power plant on the basis of the active power transfer quantities, and operating the power plant facility on the basis of the active power references. Further, a plant controller for controlling such a power plant and a power plant are provided.

The present invention relates to a sliding fit for the axially movable bearing of a thermally loaded pipe on a component, in particular on an exhaust system of an internal combustion engine, having a wire mesh which is radially supported on the outside of the pipe and is secured directly or indirectly to the component.

The invention is based on a method for the contactless approaching of an upper stop position (A) outfitted with a seal (5) by a window pane (1) of a motor vehicle actuated by external force. When an upper window-pane edge (2) approaches the stop position (A), a control signal is generated by a control unit (26), by way of which the electric drive is switched off in a shutoff position (11) pa, and/or its driving direction is reversed, so that the upper window-pane edge (2) comes to a standstill at a zero position (10) p0. When the window pane (1) approaches the stop position (A), system parameters (S1 . . . Sn) are detected by sensors (27) and stored in a memory (28). A system state SZ (S1-Sn) dependent on the system parameters (S1 . . . Sn) is read out with the shutoff position (11) pa from a characteristic diagram. A difference DELTASZ is determined by comparing the respective current system states (SZcur (S1-Sn) and the reference system state SZref (S1 . . . Sn) stored in the memory (28). A new shutoff position (11.1) panew is calculated based on the deviation DELTASZ determined.

In a method for starting a crushing operation in a gyratory crusher in which rocks are passed through a crushing gap to be crushed, the following steps are carried out: (a) a driving device is started which causes a crushing head to execute a gyratory pendulum movement, and a first width of the crushing gap is set, (b) a supply of material to the gap is commenced, (c) the resulting load on the crusher is measured, (d) the width of the gap is adjusted so that the load approaches a desired value, (e) a measure which is representative of the width of the gap after adjustment, is read, and (f) such read measure is utilized for calculation of a gap width for use as a first width of the gap in carrying out step (a) of the next start-up of a crushing operation.

The invention relates to a wind power plant, comprising a rotor that can be rotated about a vertical axis, said rotor between two horizontal bearing planes disposed at a distance on top of each other comprising a plurality of rotor blades, which are disposed distributed on a circumferential circle, can each be pivoted about a vertical pivot axis, and the pivot range of which is delimited on both sides by a stop. In such a wind power plant, an improvement in the energy yield, while simultaneously ensuring another operation, is enabled in that the width of the rotor blades is smaller than approximately ⅓ the radius of the circumferential circle.