41results about How to "Avoid big swings" patented technology

The invention discloses a method and a system for controlling data transmission of a radio network. The method includes the steps of controlling TCP (transmission control protocol) data transmission on an intermediate node of a transmission network, enabling actual TCP data transmission capability of a TCP transmitter to be close to radio network bandwidth so as to realize good link between an RLC (radio link control) level and a TCP level, and simultaneously avoiding substantial fluctuation of transmission loopback delay. Up-level TCP data transmission can be controlled according to low-level transmission capability of a radio resource, cache data size on an RNC (radio network controller) can be kept within a reasonable range, and waste of bandwidth of a radio network level is avoided.

The invention provides an etching solution and an etching replenishing solution for a copper/molybdenum (niobium)/IGZO film layer, and preparation methods and application of the etching solution and the etching replenishing solution. The etching solution comprises the following components of: 5-15% of hydrogen peroxide, 0.1-10% of nitric acid and/or sulfuric acid, 0.1-2% of hydrofluoric acid and/or ammonium fluoride, 1-10% of an organic acid, 1-10% of organic base, 0.08-1% of an azole metal corrosion inhibitor, 0.1-1% of phenyl urea, and the balance of water. The etching replenishing solutioncomprises the following components: 5-30% of nitric acid and/or sulfuric acid, 0.1-5% of hydrofluoric acid and/or ammonium fluoride, 5-30% of an organic acid, 5-30% of an organic base, 0.1%-2% of an azole metal corrosion inhibitor, and the balance of water. With the etching solution and the etching replenishing solution adopted, an SD/IGZO film layer has a good slope angle after being etched twice, the serioustrailing of the IGZO film layer is prevented, the number of applied photomasks is reduced, the copper loading capacity is high, and the production cost is low.

The invention provides a primary frequency modulation testing method, device and system of a gas and steam combined cycle unit. The method includes acquiring load commands of a gas turbine, setting diversity factor of an initial target revolving speed of the combined cycle unit; acquiring load to be adjusted in each turn of the gas turbine according to the diversity factor of the initial target revolving speed, the rated loads of the gas turbine and a steam engine; acquiring target setting values of diversity factor of the revolving speed according to the rated load of the gas turbine and the load to be adjusted in each turn of the gas turbine; applying a disturbance signal to the gas turbine; finely adjusting the target setting value of the diversity factor of the revolving speed of the gas turbine up and down so as to enable the diversity factor of the revolving speed of the combined cycle unit to meet the standard range. Expected load response loop of the steam engine is added to a frequency modulation load command loop of the gas turbine, so that reverse action of the load of the gas turbine is prevented. The primary frequency modulation testing method can optimize and adjust control parameters in real time, reverse action of the load of the gas turbine is avoided, and system is more stable and safer.

The invention provides an anti-interference and energy-saving type thermal power generating unit powder making control system. The anti-interference and energy-saving type thermal power generating unit powder making control system comprises a plurality of coal feeders, a plurality of coal mills, two primary air fans, a fuel adjusting unit and an air pressure adjusting unit. A counting module and a judgment module in the fuel adjusting unit are used for monitoring the running state of the coal mills, and once start or stop signals of the coal mills are monitored, the control system is immediately started. A fuel measuring module, a main steam pressure and fuel correcting module and a fuel output module conduct operation, then a fuel instruction is rapidly adjusted, and the stability of the fuel amount of a hearth is maintained. Meanwhile, the primary air pressure is rapidly adjusted through an air pressure correcting module, an instruction module and an adjusting module in the air pressure adjusting unit, and the dynamic matching relation between the average output of the coal mills and the primary air pressure is kept. The anti-interference and energy-saving type thermal power generating unit powder making control system solves the technical problem that in the coal mill start and stop processes, main parameters of the unit greatly fluctuate; the energy consumption of the primary air fans is reduced, blockage of the powder making control system can be prevented, and the safety performance, the stability performance and energy saving indexes of the unit are comprehensively improved.

The invention discloses a circuit breaker controlled by a remote wireless signal, which comprises a circuit breaker body equipped with a manual control handle, an automatic reclosing mechanism, and a remote signal controller, wherein the automatic reclosing mechanism comprises an outer casing, an automatic control handle, a linkage rod, a reset torsion spring, a coil, a coil bracket, an electromagnet, and an integrated circuit board; the electromagnet is electrically connected with and controlled by the integrated circuit board; an electric leakage time delay protection module, an overvoltage and undervoltage protection module, a rectifying transformation module, and a communication module kept in communication with the remote signal controller are further arranged on the integrated circuit board. Through the structure, a user can remotely control the open and close of the circuit breaker body through a wireless signal, so that the user can control the circuit more conveniently, and the safety and the reliability of electricity using are increased.

The invention relates to a magneto-rheological vibration isolation support based on a mixed mode. The support comprises a supporting rod, a base and an exciting coil, wherein the supporting rod is connected with a device subjected to vibration isolation, the base is connected with a vibration source, and the exciting coil is used for generating a magnetic field. Magneto-rheological cement gum are arranged between the supporting rod and the base and sealed in an elastic bag sleeve. The upper end and the lower end of the elastic bag sleeve are fixedly connected to the supporting rod and the base respectively. The base is fixedly provided with an outer sleeve. The supporting rod is located in an inner cavity of the outer sleeve. The upper end of the supporting rod extends out of the outer sleeve. The magneto-rheological elastomers are fixedly disposed between the supporting rod and the outer sleeve. The magneto-rheological vibration isolation support can adjust the magnetic field intensity of the vibration isolation support in real time according to outside vibration interference, vibration excitation is effectively tracked and responded, and vibration interference is effectively isolated within the wide-frequency range.

The invention discloses a boiler water recirculation system and method for preventing overtemperature of a hearth water wall under low load. The system comprises a boiler water circulating pump, a steam-water separator, a main water storage tank, a water wall middle mixing header, a water wall lower header and a coal economizer. The coal economizer, the water wall lower header, the water wall middle mixing header and the steam-water separator are sequentially connected through pipelines. A coal economizer inlet pipeline of the coal economizer is connected with a water supply pipe. A gas outletof the steam-water separator is connected to a superheater. A liquid outlet of the steam-water separator, the main water storage tank and the boiler water circulating pump are sequentially connectedand connected to the coal economizer inlet pipeline. The water wall middle mixing header is connected with a bypass water storage tank through a bypass water delivery branch pipe. A water outlet of the bypass water storage tank is connected with an inlet of the boiler water circulating pump. By means of the system, the problems that due to low flow of low-load working media, the water wall is overheated, and the wall temperature fluctuates substantially can be avoided, and transverse cracks are relieved.

The embodiment of the invention discloses a boiler drum water level control method and a boiler drum water level control device. The method comprises the steps of acquiring the display value of a water level gauge of a boiler drum at an interval of set period, determining whether the display value is equal to the optimal water level of the boiler drum, calculating the transient added water mass and the transient steam mass of the boiler drum if the display value is not equal to the optimal water level of the boiler drum, reducing the added water flow by a first set value if the transient added water mass is greater than the transient steam mass, and increasing the added water flow by the first set value if the transient added water mass is smaller than the transient steam mass. Compared with the method of adjusting the added water flow according to the steam flow in the prior art, the water level of the boiler drum can be accurately controlled to the optimal water level, sharp fluctuation of the water level of the boiler drum is avoided, and the gas-liquid conversion and energy efficiency ratio of the boiler drum are ensured.

The invention provides a signal remote transmission gas relay. According to the technical scheme, the external structure of the gas relay is improved, and meanwhile, the image acquisition module is introduced. Specifically, the bottom face of the containing cavity is designed to be the inclined face so that one-way movement of oil can be guaranteed, and meanwhile the middle partition plate is additionally arranged so that large fluctuation can be avoided in the oil flowing process. On the basis, the camera is additionally arranged at the top of the device, a liquid level image can be transmitted to a background in real time and remotely monitored by a worker, and frequent on-site checking actions are omitted. In addition, the sleeve is used for protecting the binding post, and a circuit can enter and exit from the side end; and during maintenance, the flange cover at the upper end can be opened, so that the installation and maintenance of the equipment are not influenced. According tothe invention, the oil level monitoring efficiency of the gas relay is improved, and a more perfect protection structure is provided.

The invention relates to a liquid level control device and method for a reduction distillation reactor, the control device comprises a submerged device, an argon pipeline and a liquid level measuring device, the submerged device is located at the lower part of the reduction distillation reactor, and a cavity is formed in the submerged device; the bottom surface of the submerged device is positioned above a liquid inlet of a magnesium chloride discharge pipe in the reduction distillation reactor, a plurality of hole channels communicated with the inside and the outside of the cavity are formed in the bottom surface of the submerged device, the side surface of the submerged device is opened and is connected with the lower end of the argon pipeline, the upper end of the argon pipeline penetrates out of a large cover at the top of the reduction distillation reactor, and a valve is mounted at the upper end of the argon pipeline; and the liquid level measuring device is used for measuring the liquid level height of the reduction distillation reactor. According to the control method, the fluctuation amplitude of the liquid level can be counteracted and compensated through argon filling and pressure relief of the submerged device, and therefore the effect of stabilizing the height of the liquid level is achieved.

The invention discloses an electrical coordination control method, equipment and device for a memory and a micro-grid. The method comprises the following steps: presetting a linear control system; setting a set value of a linear predictive controller in the linear control system; the set value comprises a reasonable interval of water temperature in the water heating system; the electric heating effective power generated by the electric heating wire of the electric heating load and the gas heat effective power of the gas-fired boiler are obtained in real time; and generating a control instruction of the gas valve according to the linear control system. When the electric heating load power changes, the linear control system solves the influence mode of the change value of the electric heating load power on the water temperature in the water heating system, and a control mode of a gas valve of the gas boiler for counteracting the influence can be generated; therefore, the gas valve of the gas-fired boiler does not need to be adjusted and coped after the water temperature is changed, large fluctuation of the water temperature in the water heating system can be avoided, and good constant-temperature control over the water temperature in the water heating system is achieved.