35results about How to "Will not stop" patented technology

The invention relates to a low sulfur oil cooling unit and a cooling compressor unit of the low sulfur oil cooling unit. The cooling compressor unit comprises a compressor, a condenser, a throttling component and an evaporator, wherein the evaporator is provided with a refrigerant inlet, a refrigerant outlet, a cooling water outlet and a cooling water inlet, and the refrigerant outlet of the evaporator is connected with the air inlet end of the compressor through pipelines. The cooling compressor unit further comprises a hot air bypass sub-channel with the two ends connected with the air discharging end of the compressor and the refrigerant inlet of the evaporator respectively, a temperature sensor and a PLC connected with the temperature sensor, and a stop valve, an electromagnetic valve, an energy regulating valve and a liquid-and-gas mixer are sequentially arranged on the hot air bypass sub-channel, wherein the energy regulating valve is further connected with the air inlet end of the compressor through pipelines, and the electromagnetic valve is connected with the PLC. Although the lower pressure protection exists, the compressor of the cooling compressor unit will not stop working under the condition of low loads, the compressor can continually work, and timely cooling of low sulfur oil is ensured.

The invention discloses an efficient multifunctional rotor type submersible sewage pump and belongs to positive displacement pumps. Sewage delivery is conducted through the theory of a radial piston pump. When a submersible motor drives a rotor to rotate, plungers on the rotor move in a reciprocating mode in the radial direction under the control of an eccentric stator; when the plungers move outwards, media are sucked from a suction port in a pump body through a central channel and radial holes in the pump body; when the plungers move inwards, the media are discharged towards a discharging port through the central channel and the radial holes. Due to the fact that the multiple plungers which are distributed uniformly convey the media uninterruptedly, liquid flows are quite stable, consistent and free of pulses; baffle tongues on a baffle tongue sleeve prevents the leakage from a high-pressure area to a low-temperature area inside the pump body; meanwhile, the baffle tongues and the radial holes in the rotor form cutting pairs, long fibers are cut automatically and continuously, and winding is eliminated. The pump is high in self-section function, and gas-liquid-solid mixed transportation can be conducted. Furthermore, the pump has a bidirectional operation function, liquid can be conveyed when the pump rotates in the positive direction, and the pump can wash a filter screen and eliminate blockage without stopping a machine when rotating in the negative direction.

The present invention provides a method and system for processing communication interruptions of wind power generators, wherein the method includes: the pitch controller receives the generator speed value sent by the main controller through the first communication line; When the second communication line between the pitch controller and the main controller is disconnected, a pitch control command is generated according to the generator speed value, and the pitch control is performed according to the pitch control command. Ensure that when the second communication line between the pitch controller and the main controller has a communication flash, the pitch controller receives the accurate generator speed value and continues to control the pitch, which can ensure communication flash through function, so that the wind turbine will not shut down and the pitch system will not malfunction, which ensures the power generation of the wind turbine, avoids the frequent failure of the wind turbine and stops it, and improves the availability of the wind turbine.

The invention discloses a start and stop control method for a parallelly-connected multi-unit photovoltaic grid-connected inverter system. The start and stop control method includes steps of selecting a main photovoltaic inverter unit, realizing highest efficiency of a parallel system; establishing a stop array (start array) of inverter units according to sequence of thermal circulation times from more to less (from less to more) of parallelly-connected photovoltaic inverter units in the start and stop conversion logic aspect of the parallelly-connected photovoltaic inverter units, and guaranteeing running time of all units to tend to be uniform. In the aspect of selecting a host, any photovoltaic inverter units which can normally run can be involved in competition with the host, and accordingly, halt of the parallel system caused by breakdown of the host is avoided.

The embodiment of the invention provides an H-bridge mechanical bypass control circuit, control method and system, and belongs to the technical field of high-voltage dynamic reactive compensation. The H-bridge mechanical bypass control circuit comprises the following components configured on each power unit: a controller, and an IGBT driving protection module and a power supply circuit module which are electrically connected with the controller; wherein the IGBT driving protection module is connected to a contactor installed on the power unit where the IGBT driving protection module is located, and is used for receiving control information from the controller to drive the contactor to be switched on when the power unit where the IGBT driving protection module is located fails. The current failed power unit is short-circuited, and other non-failed power units can increase the direct voltage to the SVG equipment so as to compensate the power loss defect of the failed power unit; the power supply circuit module is used for providing working voltage for the controller and the IGBT driving protection module.

The invention discloses a reconfigurable unit supporting multiple working modes and the working modes thereof. The reconfigurable unit is characterized by comprising a control layer, an arithmetic layer and a storage layer; the control layer comprises a state layer interface, a configuration layer interface, a data layer interface, an address generator and a controller; the arithmetic layer comprises an arithmetic device; the storage layer comprises a source operand cache unit and a destination operand cache unit. The working modes of the reconfigurable arithmetic unit comprise the storage arithmetic mode, the pulse arithmetic mode and the stream arithmetic mode, and higher flexibility is provided for algorithm mapping of a computing system. When task mapping is carried out in the computing system, the specific working modes of the reconfigurable arithmetic unit can be selected according to specific features and the bottleneck of the algorithm to be mapped and in combination with specific conditions of network communication and storage bandwidth in the computing system, therefore, the arithmetic throughput capacity and network communication and storage access pressure are considered, and the working efficiency of the whole system is improved.

The invention discloses a positioning compensation system applied to automobile wheel casing edge covering. The positioning compensation system comprises a positioning device and a compensation device, wherein the positioning device is arranged on an automobile wheel casing and used for measuring a distance between the compensation device and the automobile wheel casing and feeding a measurement result back to the compensation device; the compensation device comprises a monitoring module and a calling module; the monitoring module is used for receiving the measurement result and indicating the calling module to call an initial optimal compensation amount to compensate a reference edge covering trace of the automobile wheel casing according to the measurement result; and the initial optimal compensation amount is the optimal value for compensating the reference edge covering trace of the automobile wheel casing, which is screened by the positioning compensation system at the last time. Compared with the prior art, the positioning compensation system applied to the automobile wheel casing edge covering has the advantages that: the problems of failure of edge covering and shutdown of a production line caused by a failed positioning device are solved, and the work efficiency is improved. The invention also discloses a positioning compensation method for automobile wheel casing edge covering.

The invention discloses a multi-direction transmission device. The multi-direction transmission device comprises a motor, an input shaft, drop oilers, a shell, a first bevel gear, a second bevel gear,a third bevel gear, a first output shaft, a second output shaft, an oil drain valve, a convex block, sliding plates, springs, baffles, holes and oil drip nozzles. The motor is provided with the inputshaft. The shell is arranged below the input shaft. The input shaft penetrates through the shell to be connected with the first bevel bear. The two sides of the first bevel gear are connected with the second bevel gear and the third bevel gear correspondingly. The second bevel gear is connected with the first output shaft. The third bevel gear is connected with the second output shaft. The firstoutput shaft and the second output shaft penetrate through the shell. The oil drain valve is arranged below the shell. The convex block is arranged on the input shaft. The oil drip nozzles are arranged on the two sides of the input shaft and can add lubricating oil to the gears dropwise so that the gears can operate stably all the time. The situation that the gears get stuck is eradicated. The whole transmission device can operate stably without stopping operating.

The invention discloses a control method for a speed adjustment driving system of a series motor. According to the invention, a direct-current chopping voltage-regulating power source is adopted to supply power to the series motor, and an electronic controller is adopted to adjust the on-off duty ratio of power electronic switching devices in the direct-current chopping voltage-regulating power source and control the terminal voltage of the motor in a manner of pulse width modulation. The control method disclosed by the invention has the advantages that the rotating speed of the series motor can be detected without a speed sensor; rotating speed and current feedback control is introduced, so that on the premise of maintaining the soft mechanical properties of the system, the defects, for instance that the rotating speed increases to a dangerous value when the system is in idle running at high voltage, serious overload happens during locked rotor and the locked rotor phenomenon easily happens during low speed running at low voltage, in the mechanical properties of the speed adjustment driving system of the open-loop series motor are eliminated.

The invention relates to a low sulfur oil cooling unit and a cooling compressor unit of the low sulfur oil cooling unit. The cooling compressor unit comprises a compressor, a condenser, a throttling component and an evaporator, wherein the evaporator is provided with a refrigerant inlet, a refrigerant outlet, a cooling water outlet and a cooling water inlet, and the refrigerant outlet of the evaporator is connected with the air inlet end of the compressor through pipelines. The cooling compressor unit further comprises a hot air bypass sub-channel with the two ends connected with the air discharging end of the compressor and the refrigerant inlet of the evaporator respectively, a temperature sensor and a PLC connected with the temperature sensor, and a stop valve, an electromagnetic valve, an energy regulating valve and a liquid-and-gas mixer are sequentially arranged on the hot air bypass sub-channel, wherein the energy regulating valve is further connected with the air inlet end of the compressor through pipelines, and the electromagnetic valve is connected with the PLC. Although the lower pressure protection exists, the compressor of the cooling compressor unit will not stop working under the condition of low loads, the compressor can continually work, and timely cooling of low sulfur oil is ensured.

The invention relates to an air conditioner inverter compressor frequency-domain constant torque control system and method. The air conditioner inverter compressor frequency-domain constant torque control system comprises a current vector control portion and a constant torque control portion; the constant torque control portion outputs a current command which is used for reducing current pulse and adds the current command which is used for reducing the current pulse and an input signal of the current vector control portion to serve as input of the current vector control portion; the current vector control portion outputs a voltage control command to control a compressor. The improved constant torque compensation control method can be applied to a full frequency domain of a compressor; the constant torque control portion compensates currents to an input end of the current vector control portion; during a high band operation process, the currents are stable, a wave crest value at every period is uniformly distributed, the compressor stably operates.

The invention provides an OWT sewage processing system. The system comprises a buffer well with a water inlet pipe (A) and a water outlet pipe (A); a separation hydrolysis tank with a water inlet pipe(B) and a water outlet pipe (B); a water diversion tank with a water inlet pipe (C) and a water outlet pipe (C); a standard osmotic chamber with a water inlet pipe (D); and a water storage tank witha water inlet pipe (E). A biological pad, a seepage area, and a saturation area with a water outlet pipe (D) are arranged under the standard osmotic chamber in sequence. The buffer well is sequentially communicated with the separation hydrolysis tank, the water diversion tank, the standard osmotic chamber, and the water storage tank. The buffer well, the separation hydrolysis tank, the water diversion tank, the standard osmotic chamber, and the water storage tank are all arranged under a frozen soil layer. The opening of the water inlet pipe (A) is not higher than a sewage pipeline. All devices are arranged under the frozen soil layer, and thus thermal insulation facilities are not needed in winter. Sewage can go through each processing apparatus under the effect of self gravity, so the system does not need extra power, and a large amount of energy is saved. Moreover, the system does not need management. At the same time, sewage is subjected to an anaerobic treatment, an aerobic treatment, a physical and chemical treatment, a sterilization treatment, a phosphor removing treatment, and a de-nitrification treatment, and the sewage is converted into clean water.

The invention relates to a plastic mold, in particular to a plastic mold with a vibration function. According to the plastic mold with the vibration function, the result that raw materials are not cut off can be ensured, so that female molds are filled with molten plastic; the labor efficiency and the production efficiency are improved; and meanwhile, the yield also can be predicted and ensured. The plastic mold with the vibration function comprises a bottom plate and the like. A closing mechanism is connected to the top of the left side of the bottom plate. Mold cavities are connected to the right end of the closing mechanism up and down. A lifting mechanism is connected to the right side of the top of the bottom plate. The bottom of the lifting mechanism makes contact with the tops of the upper-side mold cavities. By means of the plastic mold with the vibration function, the effects that the result that the raw materials are not cut off can be ensured, so that the female molds are filled with the molten plastic; the labor efficiency and the production efficiency are improved; and meanwhile, the yield also can be predicted and ensured are achieved.

An asynchronous connection motor, which solves the technical problem that the existing hydraulic coupler has large volume, heavy weight, large mechanical loss and slip loss, lower efficiency, instable speed control, low power factors, poor speed adjustment accuracy and high maintenance costs. The asynchronous connection motor comprises a main motor which operates at a power frequency, and an auxiliary motor which operates at a variable frequency, wherein a planetary gear mechanism is connected between the main motor and the auxiliary motor; the planetary gear mechanism is provided with a planet carrier; and the planet carrier is fixedly connected to an output shaft. The asynchronous connection motor can be used for driving a motor or wind power generation.