43results about How to "Effective start" patented technology

An SOFC system is started-up efficiently in a short time while letting a hydrogen concentration in a reformed gas high. A method for starting-up an SOFC system including a reformer having a reforming catalyst, and an SOFC which uses the reformed gas as a fuel, in which, catalyst A having POX function and catalyst B having SR function are used as the reforming catalyst, the method including the steps of: increasing the temperature of catalyst A, by combustion heat or electricity, to a temperature at which POX reaction can proceed; increasing the temperature of catalyst B by POX reaction heat, increasing the temperature of SOFC by feeding the reformed gas to an anode and heating catalyst B by combustion heat generated from combustion of a reformed gas discharged from the anode, or increasing the temperature of catalyst B by POX reaction heat, increasing the temperature of SOFC by feeding a combustion gas produced from combustion of the reformed gas to a cathode and heating catalyst B by this combustion gas; and reducing the proportion of POX reaction or stopping POX reaction and perform SR, after catalyst B is heated to a temperature at which SR reaction can proceed.

The invention relates to a hot-forging process for tantalum target material with high performance. The process comprises the following steps of: firstly, forging a tantalum ingot by means of cold forging for the first time; performing acid washing and heat treatment on the tantalum ingot and forging the tantalum ingot by means of hot forging for the second time; and performing acid washing and heat treatment on the tantalum ingot again and forging the tantalum ingot by means of hot forging for the third time. By the hot-forging process, the tantalum ingot with large diameter (more than or equal to 160mm) applied to the tantalum target material with the high performance is forged by a combined process of cold forging and hot forging, and the process is matched with a proper heat treatment process so as to acquire grain sizes and texture components required by the product. By utilizing rolling blanks produced by the process, the tantalum target material with the high performance of which the texture proportion in the direction (100) of the thickness is more than 50 percent and is uniform and which meets a using requirement of high-end sputtering base platform can be obtained. Compared with the common tantalum target material, the tantalum target material with the high performance has the advantages that the texture components of which the texture proportion in the direction of the thickness of the target material is more than 50 percent is realized, and a high requirement on the texture uniformity is proposed, so that the consistency of sputtering velocity in a using process is ensured.

The invention provides a surfactant as well as a preparation method and an application thereof. The surfactant comprises the following components by mass percent: 45%-65% of aliphatic alcohol polyoxyethylene ether sulfonate, 20%-35% of a cationic surfactant and 10%-20% of a surfactant assistant, wherein a molecular formula of the aliphatic alcohol polyoxyethylene ether sulfonate is CnH[2n+1]-(CH2CH2O)m-SO3Na, n is an any integer ranging from 12 to 15, and m is an any integer ranging from 2 to 5. The invention further provides the preparation method for the surfactant and the application of the surfactant to tertiary oil recovery of a carbonate reservoir. The surfactant is independently used, does not need to be added with alkali, and is free of damage to a stratum and an oil well; an oil washing system prepared from the surfactant can effectively change the wettability of a rock surface and strip off crude oil adsorbed on the surface of a carbonate rock, and the oil washing efficiency reaches more than 60%.

The invention relates to a preparation method of a large-sized magnesium alloy forged disc and belongs to the technical field of magnesium alloy materialmachining. The preparation method of the large-sized magnesium alloy forged disc comprises the following steps of heating a casting magnesium alloy ingot to 400-430 DEG C and preserving the heat, wherein the casting magnesium alloy ingot after homogenizing thermal treatment is 300-350mm in diameter and 1.5-1.85 in height-diameter ratio; upsetting and drawing out the heated casting magnesium alloy ingot at 400-430 DEG C to obtain a magnesium alloy forged disc; repeating processes of heating, preserving the heat, upsetting and drawing out till the diameter of the magnesium alloy forged disc is larger than or equal to 670mm to obtain the large-sized magnesium alloy forged disc, wherein the temperature when repeating the procedures of preserving the heat and upsetting every time is 10-20 DEG C lower than the temperature when previously repeating the procedures of preserving the heat and upsetting, the forging ratio in each upsetting procedure is 1.5-2, the forging ratio in each drawing-out procedure is 1.02-1.05, and the deformation speeds in the upsetting and drawing-out procedures both are 12-16mm / s. According to the preparation method of the large-sized magnesium alloy forged disc, which is disclosed by the invention, the large-sized magnesium alloy forged disc with the diameter of 670-720mm, the thickness of 80-120mm, the tensile strength of larger than or equal to 300MPa, the yield strength of larger than or equal to 180Mpa and the elongation percentage of larger than or equal to 10% can be manufactured, and the manufactured large-sized magnesium alloy forged disc can completely meet the requirements on the preparation of a large-sized magnesium alloy die forged piece.

A method is described for the start-up of a gas turbine comprising the phases of effecting a preliminary purging cycle of the discharge duct (28) of the turbine (20), establishing a predetermined minimum value (FSR 1 ) for the flow of gaseous fuel entering the combustor (14) for a period of time which is adequate for effecting a first attempt at ignition and effecting a first attempt at ignition, effecting an intermediate purging cycle of the discharge duct (28), interrupting the flow of gaseous fuel to the combustor (14), and progressively increasing the value (FSR n ) of the flow of gaseous fuel entering the combustor (14), effecting further attempts at ignition until the mixture of air / gaseous fuel has been ignited and the consequent start-up of the turbine (20), or until a predetermined maximum value (FSR max ) of the flow of gaseous fuel has been reached.

In order to more effectively absorb shock energy by a torsion bar included in a motor-driven emergency locking retractor, the power of a motor (12) is transmitted to a spool (4) through a connecting gear (27) of a power transmission mechanism (21), a pinion gear (28), a locking base (17), the torsion bar (7), and a bushing (20), and the spool (4) rotates so as to control the tension of a belt (3). Also, activation of deceleration-sensing means (5) causes a pawl (16) to rotate and to engage with internal teeth (30) formed on the sidewall of a frame (2), thereby preventing rotation of the locking base (17). Thus, the torsion bar (7) is twisted, and only the spool (4) rotates. In this state, a motor-driving unit (13) is disposed close to a locking mechanism (6) of the torsion bar (7), and the spool (4) rotates without receiving a resistance from the motor-driving unit (13), whereby shock energy is easily transmitted to the torsion bar (7).

The invention is designed to be used in the ballast of high intensity gas-discharge lamp and comprises: a first module for generating first group of pulse voltage according to a low frequency driving signal; a second module for generating second group of pulse voltage according to a high frequency driving signal; a stacking and boosting module for stacking and boosting the first group of pulse voltage and second group of pulse voltage in order to generate a group of outputting voltage for breaking down the discharge lamp.

The invention discloses a carboxylated carbon nanotube catalyst carrier as well as a preparation method and application thereof. The preparation method of the carboxylated carbon nanotube catalyst carrier comprises the following steps of: putting carbon nanotubes in the mixed liquid of concentrated HNO3 and concentrated H2SO4 in a volume ratio of (1: 3)-(3: 2) and performing constant-temperature reflux treatment in the range of 80-95 DEG C for 100-120 minutes, and then washing and drying, thereby obtaining the carboxylic carbon nanotube catalyst carrier. The catalyst carrier is used for preparing Pt / CNT catalyst; the obtained Pt / CNT catalyst is used as an air cathode material for preparing a single-cavity membrane-free air cathode microbial fuel cell. The rich oxygen-containing groups are introduced on the surface of the catalyst carrier prepared by the method, so that the oxygen reduction effect of the catalyst is improved; and the Pt / CNT catalyst prepared from the catalyst carrier succeeds in starting MFC (Micro Function Circuit) so that the start period of MFC is shortened, the internal resistance of MFC can be reduced and the output voltage of MFC also can be greatly increased.

The invention provides a surfactant as well as a preparation method and an application thereof. The surfactant comprises the following components by mass percent: 45%-65% of aliphatic alcohol polyoxyethylene ether sulfonate, 20%-35% of a cationic surfactant and 10%-20% of a surfactant assistant, wherein a molecular formula of the aliphatic alcohol polyoxyethylene ether sulfonate is CnH[2n+1]-(CH2CH2O)m-SO3Na, n is an any integer ranging from 12 to 15, and m is an any integer ranging from 2 to 5. The invention further provides the preparation method for the surfactant and the application of the surfactant to tertiary oil recovery of a carbonate reservoir. The surfactant is independently used, does not need to be added with alkali, and is free of damage to a stratum and an oil well; an oil washing system prepared from the surfactant can effectively change the wettability of a rock surface and strip off crude oil adsorbed on the surface of a carbonate rock, and the oil washing efficiency reaches more than 60%.

The invention relates to a method for operating the hybrid drive system of a hybrid vehicle and a control device (20). According to at least one signal provided by one part of a hybrid vehicle (34), the start of the hybrid vehicle (34), which is static before the identification or prediction. During the operation period of the driving motor (14) of the hybrid drive system, through the rotation orlinkage of a crankshaft (12), the crankshaft (12) of the burning motor (10) of the hybrid drive system rotates to an initial position of the crankshaft (12) relative to the burning motor (10); from the moment when the crankshaft (12) exists on the initial position, the ejection valve an the ignition coil of the burning motor (10) can be controlled by the electronic device of the hybrid drive system to burn the burning motor (10); and after the hybrid vehicle (34) is started, the crankshaft (12) is rotated to the initial position.

The invention discloses a supersonic plane blade cascade flow field starting and uniformity adjusting device. The adjusting device takes the flow from the cascade wind tunnel as the front, and includes an upper suction assembly installed above the leading blade of the cascade test model. Behind the upper suction assembly is an upper tail plate with a fixed front end and a suspended An upper baffle with a fixed front end and a suspended rear end is installed at the rear; it also includes a lower suction assembly installed under the tail blade of the cascade test model, and a lower tail plate with a fixed front end and a suspended rear end is installed behind the lower suction assembly. A lower baffle with a fixed front end and a suspended rear end is installed behind the tail blade. The adjusting device can stabilize the mass flow of the discharge channel in the suction test section, provide a local low-pressure environment to stabilize the shock wave structure of the discharge channel, regulate the pressure distribution in front of the grid, and realize the start-up and uniformity adjustment of the supersonic flow field.

To provide a control method for a heating device capable of effectively starting the heating device by limited electric power consumption. (step 5) Heating priority is determined by a calculation of multiplying a temperature deviation of each zone by an inherent heat capacity coefficient K1 set per each zone. (step 6) Heating priority of a zone is subsidiarily determined by a calculation of multiplying an adjacent temperature deviation with an adjacent zone by an adjacent coefficient K2 set based upon an adjacent relationship. (step 7) An order from a zone with the maximum heating priority toa zone with the minimum heating priority is determined, one group is created by combining a plurality of zones including the zone with the maximum heating priority and the zone with the minimum heating priority, and groups are sequentially created by combining a plurality of zones in the same way from remaining zones. (step 8) Heater electric power consumption is limited in each group.

The invention discloses a sensorless salient pole permanent magnet synchronous motor and a starting motor control method, and relates to the field of motors. Closed-loop control of start-to-operation of sensorless motors requires a more robust and advanced method. The system comprises a controller which detects rotor motion during a starting period so as to obtain a motor rotating speed estimation value at a starting moment; selecting one of a plurality of different motor rotating speed estimation methods as an initial starting motor rotating speed estimation method based on starting motor rotating speed estimation; estimating the rotating speed of the motor according to the selected initial starting motor rotating speed estimation method. A drive command is generated during motor startup using closed-loop control according to feedback provided to the controller, and a motor speed estimate is obtained according to the selected initial startup motor speed estimate. According to the technical scheme, a dynamic high-frequency injection speed estimation method is adopted and can be used even when the rotor rotates at a non-negligible speed, so that stable and efficient starting of the motor is achieved.

The invention relates to a preparation method of a large-sized magnesium alloy forged disc and belongs to the technical field of magnesium alloy materialmachining. The preparation method of the large-sized magnesium alloy forged disc comprises the following steps of heating a casting magnesium alloy ingot to 400-430 DEG C and preserving the heat, wherein the casting magnesium alloy ingot after homogenizing thermal treatment is 300-350mm in diameter and 1.5-1.85 in height-diameter ratio; upsetting and drawing out the heated casting magnesium alloy ingot at 400-430 DEG C to obtain a magnesium alloy forged disc; repeating processes of heating, preserving the heat, upsetting and drawing out till the diameter of the magnesium alloy forged disc is larger than or equal to 670mm to obtain the large-sized magnesium alloy forged disc, wherein the temperature when repeating the procedures of preserving the heat and upsetting every time is 10-20 DEG C lower than the temperature when previously repeating the procedures of preserving the heat and upsetting, the forging ratio in each upsetting procedure is 1.5-2, the forging ratio in each drawing-out procedure is 1.02-1.05, and the deformation speeds in the upsetting and drawing-out procedures both are 12-16mm / s. According to the preparation method of the large-sized magnesium alloy forged disc, which is disclosed by the invention, the large-sized magnesium alloy forged disc with the diameter of 670-720mm, the thickness of 80-120mm, the tensile strength of larger than or equal to 300MPa, the yield strength of larger than or equal to 180Mpa and the elongation percentage of larger than or equal to 10% can be manufactured, and the manufactured large-sized magnesium alloy forged disc can completely meet the requirements on the preparation of a large-sized magnesium alloy die forged piece.

The invention relates to medical hemostatic sponge and a preparation method thereof. The hemostatic sponge is formed by bonding freeze-dried chitosan sponge and carboxymethyl chitosan sponge, and tertiary butanol is added to freeze-dried chitosan sponge and carboxymethyl chitosan sponge in the preparation process. The hemostatic sponge prepared through the process is good in crystal type, short in in-vivo degradation cycle, capable of continuously and effectively adhering to wounds, strong in dissolution resistance, good in hemostatic effect, high in production efficiency, free of toxic and side effects and free of irritation.

The invention discloses a voltage management system and method for preventing vehicle feed. The system comprises a storage battery and a forecabin electric appliance box, and the forecabin electric appliance box is used for distributing power for a forecabin electric load. The system further comprises an upper CAN electric appliance box, the input end of the upper CAN electric appliance box is connected with the storage battery, the output end of the upper CAN electric appliance box is connected with the power input end of the forecabin electric appliance box, and the upper CAN electric appliance box is used for stopping distributing power to the power input end of the forecabin electric appliance box when the electric quantity of the storage battery is low. The advantages of the present invention are that the power supply of all electric appliances powered by the forecabin electric appliance box can be automatically cut off when the electric quantity is low; the safety and reliability of the electric quantity of the storage battery are guaranteed; the feed of the storage battery caused by the power distribution and power supply of the forecabin electric appliance box is avoided; and the electric quantity of the vehicle storage battery is guaranteed, so that an automobile can be effectively started.