8results about How to "Adjustable opening" patented technology

The invention provides an intelligent water turbine control method based on a digital speed regulator, which comprises the following steps of: forming a first data set by collecting rotating speed frequency, active power and water head signals of a water turbine generator set, and providing a basic data source for a control decision; performing credibility verification on the first data set through a physical rule, generating a verified second data set, and ensuring that the data input into the control logic is accurate and credible; based on the second data set, dynamically selecting at least two control algorithms adaptive to the working condition, fusing the outputs of the algorithms, and calculating to obtain an accurate guide vane opening control instruction, so as to solve the problem of insufficient adaptability of a single algorithm; then the guide vane opening control instruction is converted into a driving signal to operate an electro-hydraulic follow-up system, and adjustment of the guide vane opening is achieved; and finally, guide vane opening feedback is obtained, an instruction and the feedback are compared to generate evaluation data, and control algorithm parameters are adaptively corrected according to the evaluation data, so that the problem that the control effect of a single control algorithm on the water-turbine generator set is poor is solved.

The utility model discloses an integrated catalytic reactor used in a styrene production process. The integrated catalytic reactor comprises a gas inlet for introducing waste gas, a tubular heat exchanger, a plate heat exchanger, a catalytic bed, a temperature control device for adjusting the temperature of the waste gas in the tubular heat exchanger, and a gas outlet. Waste gas enters from the gas inlet and enters a pipe of the tubular heat exchanger from the gas inlet channel for heat exchange, so that the temperature is increased to be higher than the styrene polymerization temperature, and the waste gas enters the plate heat exchanger from the tubular heat exchanger through the first channel, is subjected to heat exchange again to increase the temperature, then enters the catalytic bed, and is subjected to catalytic reaction to form clean high-temperature flue gas; and the high-temperature flue gas passes through the third channel to the periphery of the plate heat exchanger and exchanges heat with waste gas in the plate heat exchanger, and the cycle is repeated. Waste gas in the low-temperature section is subjected to heat exchange through a tubular heat exchanger, the temperature of the waste gas is increased to be higher than the styrene polymerization temperature, and the tubular heat exchanger is not blocked; and the high-temperature section adopts the plate heat exchanger for waste heat recovery, waste heat is utilized, and the cost performance is high.

This invention discloses a composite flow control device of needle valve and pressure valve and its working method, which solves the problem that fluid controllers in the prior art all use single control. It has the beneficial effects of realizing the switching between pressure valve and needle valve and avoiding fluid contamination. The specific solution is as follows: A composite flow control device of needle valve and pressure valve includes a support frame, which supports a switching control structure. A needle valve and a pressure valve are arranged sequentially on one side of the switching control structure. The needle valve includes a needle valve body, a first flow channel is provided in the needle valve body, the needle valve body is connected to an isolation shell, an internal rotor is provided in the isolation shell, an external rotor is arranged circumferentially outside the isolation shell, the bottom of the isolation shell is fixedly connected to a screw, and part of the screw is located inside the internal rotor to form a helical drive between the internal rotor and the internal rotor. One end of the internal rotor is provided with a needle-shaped component that can be inserted into the first flow channel. The switching control structure includes a rotating shaft that passes through the support member. The rotating shaft is rotatable and is connected to the sun gear of the planetary gear component.

This invention relates to an intelligent electrical appliance, comprising a body having a drying chamber, wherein the body has an air inlet in fluid communication with the drying chamber; a drying module disposed within the body; a temperature sensor disposed within the drying chamber for detecting the temperature within the drying chamber; and an adjustment mechanism disposed on the air inlet, which adjusts the opening of the air inlet according to the temperature detected by the temperature sensor. This intelligent electrical appliance can adjust the opening of the air inlet through the adjustment mechanism to meet the airflow adjustment requirements corresponding to the humidity and temperature within the drying chamber, thereby achieving optimal drying effect. This invention also relates to a drying control method for this intelligent electrical appliance, wherein during drying operation, the temperature T within the drying chamber is detected in real time, and the opening of the air inlet of the drying chamber is adjusted according to a calculated temperature coefficient A. This invention further relates to a computer-readable storage medium storing a computer program / instructions executable by a processor to implement the aforementioned drying control method.

The utility model discloses a municipal road surface base course paving device which comprises a vehicle body in which a first material storage cavity, a second material storage cavity and a third material storage cavity are arranged, and is characterized in that the top of the vehicle body is provided with a screening assembly for carrying out three-stage screening on broken stones; the screening assembly screens broken stones and then guides the screened broken stones into the first storage cavity, the second storage cavity and the third storage cavity correspondingly, blanking grooves are formed in the bottoms of the first storage cavity, the second storage cavity and the third storage cavity, and a baffle assembly for shielding the blanking grooves is arranged at the bottom of the vehicle body; an adjusting assembly is arranged on one side of the vehicle body to enable the baffle assembly to slide left and right, the upper-layer screening box, the lower-layer screening box and the inclined plate vibrate and screen broken stones, and after the vehicle moves rightwards, a composite layer structure of lower-layer fine broken stones, middle-layer coarse broken stones and upper-layer medium-sized broken stones can be laid on a pavement base layer.

The application discloses a multi-station processing machine tool for batch production, comprising a processing platform, a belt line and at least two stations arranged on the processing platform; the belt line is used for conveying products, one end of the belt line is used for feeding products, and the other end of the belt line is used for discharging products; each station comprises a carrying mechanism and a processing turntable, the carrying mechanism is used for taking products on the belt line to the processing turntable or taking products on the processing turntable to the belt line; the application can automatically feed and discharge products, does not need manual clamping, can process single products in single stations or process products in multiple stations synchronously, increases efficiency, improves production capacity, and is suitable for batch production.

The utility model discloses a formaldehyde treatment device, which relates to the technical field of formaldehyde treatment and comprises an exhaust structure, an air guide structure, a detection structure and an opening and closing structure. An installation groove is formed in an exhaust pipe of the exhaust structure to fix the gas guide structure, and the gas guide pipe separates a gas path and a reaction area through a separation detection groove. A dosing tank of the detection structure stores a potassium permanganate solution and is controlled by an on-off pipe valve to be linked with a detection tank, and the formaldehyde concentration is fed back by monitoring the fading degree of the solution through a photoelectric sensor. The opening and closing structure adopts combination of magnetic suction sealing and thread transmission, and a driving motor drives a threaded rod and a top column to adjust the opening degree of an opening and closing plate, so that dynamic control of an air path is realized. After waste gas enters from the gas inlet, part of gas is guided into the gas guide pipe to react with a test solution, detection data are linked with the opening and closing structure in real time to adjust the exhaust efficiency, and the magnetic attraction block stops liquid backflow during shutdown. The device solves the problems of detection lag, backflow risk and manual dependence, and improves the processing precision and reliability.

The utility model provides a coal dressing and gangue discharging device for a coal mine, which belongs to the field of coal mining equipment and comprises a feeding screening mechanism, a transferring and gangue discharging mechanism and a dust falling mechanism. The feeding and screening mechanism is additionally arranged on the coal mine coal dressing and gangue discharging device, so that coal mine powder and ore particles are separated, and slack coal is automatically collected; a dynamic sorting and conveying combined operation mode is adopted in the transfer gangue discharging assembly to achieve recognition, distinguishing and separation of coal gangue and coal mine, sorted materials directly enter corresponding conveying channels, and secondary mixing is avoided. And finally, a dual-protection system is formed through a dust cover and an air suction dust-falling device in the dust-falling mechanism, the dust cover is designed in a surrounding mode to be matched with the air suction dust-falling device, the dust diffusion range of a feeding port is narrowed, the air suction dust-falling device is in linkage with the injection action of an execution assembly, and pulverized coal particles generated during operation are captured in real time. And the problem of pulverized coal diffusion caused by injection of the to-be-screened coal mine dumped from the feeding port and the execution assembly is solved.