37results about How to "Reduce working speed" patented technology

The invention discloses an aggregate convey device adopted by a concrete mixing station and comprises a lift rail (110), a lift bucket (130), a hoister (140), a shutdown switch (150) and a mixer. The lift rail (110) is placed aslant; the hoister (140) is at the top end of the lift rail (110) and connected with the lift bucket (130) to drive the lift bucket (130) to slide along the lift rail (110). The convey device also comprises a material storage bucket (270) which is arranged above the mixer (120) and the angle Alfa between the lift rail (110) and the level is less than or equal to 60 degrees. The material storage bucket is added in the invention, which separates the working circulation of a lifter and the mixing circulation and enables the lifter to work continuously and meanwhile, reduces the installation angle of the lift rail and the loading of the hoister, thus improving the reliability of the hoister.

The invention discloses an energy-saving control method for paver. Presetting paving thickness, paving width, and paving velocity in paving work are inputted into the collocating cell of engine working point in controller. According to it presetting rotating speed value of engine is obtained. The controller adjusts the engine of paver so that the actual rotating speed of paver is equal to the rotating speed of engine according to the presetting rotating speed value of engine obtained. The method in invention is provided with simple operation, high automaticity. It can adjust the rotating speed of engine according to the change of actual working condition so that not only the whole efficiency is improved but also it is provided with the energy saving under the presence of ensuring working performance.

The invention discloses a double-output conjugate cam-connecting rod paper-transferring mechanism and belongs to the technical field of a paper-transferring mechanism for a sheet-fed offset press. The paper-transferring mechanism is provided with a connecting rod mechanism on the basis of the traditional conjugate cam-connecting rod paper-transferring mechanism, wherein a pair of conjugate cams is matched with two sets of connecting rod mechanisms. The alternative double output of paper sheet is realized, and the rotation speeds of the paper-transferring mechanism and paper-transferring cam are efficiently reduced, thereby reducing the influence of the dynamic property on the mechanism, obviously increasing the paper-transferring speed even under the condition of maintaining the rotation speed of the cam, and lowering the demand on the property of the paper-transferring cam and reducing the aging speed of the mechanism, so the double-output conjugate cam-connecting rod paper-transferring mechanism has the advantages that the motion output is accurate, high-efficient and stable, the operation is easy, and the mechanism is fit for being applied to the sheet-fed offset press or other printing equipment.

The invention provides a pipeline compressor model stage with flow coefficient of 0.0495. The pipeline compressor model stage comprises an impeller, a vaneless diffuser, a bend and a return device. The impeller is located at the position of an inlet of the model stage, and the vaneless diffuser is arranged at an outlet of the impeller. The return device is located at the position of an outlet of the model stage, and the vaneless diffuser communicates with the bend through the return device. The machine Mach number Mu2 of the model stage ranges from 0.35 to 0.65, the flow coefficient theta of a design point is 0.0495, the energy head coefficient tau of the design point is 0.603, the polytropic efficiency eta of all the Mach numbers under the design flow coefficient work conditions ranges from 0.867 to 0.872, and the applied flow range is 60%-150% of the design point. The invention further provides a design method of the impeller of the model stage. The model stage is high in efficiency, high in energy head efficiency, large in hub ratio and small in span, by means of the model stage, a light-medium compressor can have high running efficiency and a wide work condition range, meanwhile the working rotating speed of a rotor can be reduced, the bearing span is shortened, and the rotor stability is improved.

The invention discloses a heavy-duty automobile electric control silicone oil clutch fan calibration method. The method comprises the following steps of 1, testing whether the water outlet temperatureof an engine exceeds the highest water outlet temperature allowed by engine design when the engine is under the limit load and a fan is at the limit rotating speed, and if so, replacing a fan with higher power; 2, recording the rotating speed corresponding to the fan when the water outlet temperature of the engine is maintained in the optimal use water temperature range under the conditions of constant rotating speed of the engine and different output powers of the engine; and 3, when a vehicle actually runs and the water temperature of the engine is changed within the optimal use water temperature range under the output power in the step 2, enabling the fan to run at the corresponding rotating speed measured in the step 2. On the premise of ensuring that the engine is not overheated under the limit load working condition, the engine under the common working condition of the whole vehicle is maintained within the optimal working water temperature, air temperature and engine oil temperature range, and meanwhile, the lowest working speed of the fan is ensured, so that the purposes of oil saving and noise reduction are achieved.

The invention belongs to the field of energy conversion, provides a transcritical CO2 closed circulation system and aims at solving the problems of narrow operation range and low circulation efficiency of an existing transcritical CO2 power generation/driving unit. The system comprises a pre-compressor, a main compressor, a re-compressor, a turbine, a cooler, a low-temperature heat regenerator, ahigh-temperature heat regenerator and a heater; the pre-compressor, the main compressor, the re-compressor, the turbine, the cooler, the low-temperature heat regenerator, the high-temperature heat regenerator and the heater are connected to form a closed CO2 circulation loop; a shunting point and a mixing point are arranged on the closed CO2 circulation loop. The inlet of the re-compressor is communicated with the shunting point; the outlet of the re-compressor is communicated with the mixing point; and therefore, a shunting branch is formed; and the shunting branch is shunted out of the outlet of a first channel and converged at the outlet of a second channel. The system has high circulation efficiency. With the system adopted, the operation range of the unit is wide.

The invention belongs to a centrifugal compressor model stage, and particularly relates to a model stage special for a pipeline compressor. The model stage is suitable for modeling design of a pipeline compressor product. The model stage comprises an impeller, a vaneless diffuser, a curve and a backflow device; the impeller is located at the inlet position of the model stage, the vaneless diffuser is arranged at an outlet of the impeller, the backflow device is located at the outlet position of the model stage, and the vaneless diffuser is communicated with the backflow device through the bend; and the design machine mach number Mu2 of the model stage is 0.35 to 0.5, the flow coefficient phi1 is equal to 0.023 to 0.053, the energy head coefficient tau is equal to 0.47 to 0.71, the design condition point polytropic efficiency etapol under each mach number is equal to 0.846 to 0.873, the hub ratio ds/D2 of the model stage is equal to 0.4, and the ratio L/D2 of the span to the diameter is 0.292. The model stage is high in efficiency, high in energy head coefficient, large in hub ratio and small in span; by means of the model stage, the pipeline compressor can have the higher running efficiency and wider working condition scope; and meanwhile, the rotor working rotating speed can be decreased, the bearing span is shortened, and the rotor stability is improved.

The invention discloses a combined structure of a transmission shaft end crossed shaft coupling. The combined structure comprises a transmission shaft, wherein both ends of the transmission shaft are connected with crossed shaft type universal joint shaft couplings; and the phase angle theta between the crossed shaft type universal joint shaft couplings is more than 0 degree and less than 90 degrees. The combined structure breaks through the connection mode of the prior crossed shaft type universal joint shaft coupling and solves the vibration problem of the transmission shaft; meanwhile, the combined structure does not change the included angle between transmission shafts and the operating rotating speed of the transmission shafts, thereby reducing the operating vibration amplitude of the transmission shafts substantially; vibration reduction in the structure is more than three fourths of that of the prior proposal; moreover, the proposal is simple and easy to carry out and is suitable for the connection of a plurality of shafts.

The invention provides a pipeline compressor model stage with the flow coefficient being 0.0293. The pipeline compressor model stage comprises an impeller, a vaneless diffuser, a curve and a backflow device; the impeller is located at the position of an inlet of the model stage, the vaneless diffuser is arranged at an outlet of the impeller, the backflow device is located at the position of an outlet of the model stage, and the vaneless diffuser is communicated with the backflow device through the curve; and the machine mach number Mu2 of the model stage ranges from 0.35 to 0.65, the flow coefficient phi1 of a design point is equal to 0.0293, the energy head coefficient tau of the design point is equal to 0.614, the polytropic efficiency etapcl under the discharge coefficient working condition designed under all mach numbers ranges from 0.838 to 0.843, and the applied flow scope is 60% to 150% that of the design point. The invention further provides a design method of the impeller of the model stage. The model stage is high in efficiency, high in energy head coefficient, large in hub ratio and small in span; by means of the model stage, a light medium compressor can have the high running efficiency and the wide working condition scope; and meanwhile, the working rotating speed of a rotor can be reduced, the bearing span can be decreased, and the stability of the rotor is improved.

The invention discloses a power switching network implementation method based on wave rotor equipment, and relates to the technical field of engineering energy conservation. Pressure energy is directly transmitted through unsteady gas waves, expansion cooling of public engineering steam and the work exchange process of high-pressure steam and low-pressure steam are achieved, a flexible and diversified public steam work exchange network is formed with the assistance of a high-expansion-ratio injection supercharger, and the energy-saving purpose is achieved; the wave rotor and the jet pressurizer are arranged in different forms according to working characteristics, so that the functions of an expansion cooling process of high-pressure steam, a pressurizing and warming process of low-quality steam, a work exchange process of high-pressure steam and low-pressure steam and the like are realized, and external shaft work does not need to be consumed; the practical problems of current industrial pressure reduction, temperature reduction pressure energy loss and low extra steam production amount are solved, the sustainable development principle is met, and energy consumption reduction of an industrial process device is facilitated.

The invention discloses a bread whipping mechanism with an automatic material gathering function. The bread whipping mechanism comprises a body, a work cavity, a control mechanism, a power mechanism,a material delivering mechanism, a ventilation mechanism, and a gathering mechanism. The work cavity is mounted on the upper part of the left side of the body. The material delivering mechanism is mounted on the top of the body. The control mechanism is arranged on the middle of the right side of the body. The power mechanism is arranged on the middle of the left side of the body. The ventilationmechanism is mounted on the lower part of the left side of the body. The gathering mechanism is movably connected to the left end of the work cavity. Four corners of the lower end of the body are provided with support legs. Through the cooperation of all mechanisms, the whipping mechanism can quickly whip cream and gather the cream, compared with a conventional cream whipping machine, the structure is novel, the whipping efficiency is high, and cream with different hardness can be produced according to the needs.

The invention discloses a U-shaped flow channel impulse turbine suitable for oscillating water column type wave power generation. The air turbine comprises a hub, moving blades, moving impellers, arc-shaped guide sections and guide blade sections; the two ends of the hub are provided with the corresponding moving impellers; the moving impellers rotate about the hub; the moving impellers are correspondingly provided with the moving blades; moreover, the two arc-shaped guide sections connected with each other are arranged at the two sides of the moving impellers; the guide blade sections are arranged circumferentially at the end parts, away from the moving impellers, of the arc-shaped guide sections correspondingly; and each guide blade section is provided with a circle of guide blades evenly arranged in the circumferential direction. The air turbine has high energy conversion efficiency, a good self-starting property, relatively low working speed, a relatively wide flow coefficient range and relatively small working noise.

An open-end rotor spinning device (1) has: a spinning rotor (3) arranged in a rotor housing (2), the rotor housing (2) being covered by a top cover member (4); a swinging device (6) used for opening and closing the top cover member (4) and a locking device (7) for locking the top cover member. A fiber supply passage (8) and a yarn output passage (9) are arranged in the top cover member (4). The swinging device (6) and the locking device (7) are connected to each other. In an operating method of the open-end rotor spinning device (1) having the spinning rotor (3) rotating in the rotor housing (2) during a spinning operation, the rotor housing (2) is closed or opened by the top cover member (4). In order to open or close the rotor housing (2), the top cover member (4) swings by means of theswinging device (6), and, in order to lock the top cover member (4), the top cover member is locked by means of the locking device (7). The swinging device (6) and the locking device (7) are optionally connected to each other or disconnected from each other.