6results about How to "Avoid stress shocks" patented technology

The ultrahigh-pressure multi-point synchronous action hydraulic system comprises a servo motor, an ultrahigh-pressure plunger pump, an ultrahigh-pressure electromagnetic switch valve, an ultrahigh-pressure safety valve, N control valve sets and N oil cylinders, and N is larger than or equal to 2; the servo motor drives the ultrahigh pressure plunger pump to provide a pressure oil source, and the N control valve sets can independently control lifting and pressure maintaining of the corresponding oil cylinders. And an oil return throttling speed regulation loop is formed by adjusting the opening degree of the proportional throttling valve in each control valve group, so that synchronous displacement control is realized. Two ports of the proportional throttle valve are connected with the one-way valve and the hydraulic control one-way valve, ultrahigh-pressure oil is separated from the proportional throttle valve, the proportional throttle valve works in an oil cylinder low-pressure oil return loop, an ultrahigh-pressure proportional valve does not need to be arranged, frequent switching of a switching valve in the synchronous action process is avoided, and the advantages of being stable in synchronization and high in precision are achieved. After the synchronous action system is reset, the hydraulic one-way valve and the one-way valve can achieve the pressure maintaining function of the oil cylinder high-pressure cavity.

The application provides a kind of high-precision measurement and water filling method for one loop volume based on temperature-pressure real-time compensation, comprising the following steps: real-time acquisition of temperature and pressure data of one loop system and preprocessing;Construct one loop volume and full liquid level prediction model, output actual total volume and full liquid level;Check the current liquid level and calculate the water load combined with the total volume;Based on the current water load and real-time temperature, pressure data dynamically adjust the water filling rate, and dynamically calculate the liquid level threshold of water filling mode switching, realize the adaptive switching of water filling mode.The application realizes high-precision dynamic estimation of the relationship between one loop volume and liquid level through temperature-pressure real-time compensation and neural network prediction, and adaptively adjusts the water filling process, solves the problems of large measurement error, rigid control and inaccurate water filling caused by fixed parameters in traditional methods, and improves the water filling precision, safety and system adaptive ability.

The application discloses a backflow pipeline for aluminum paste metering and feeding, and relates to the field of pipeline design.The backflow pipeline for aluminum paste metering and feeding comprises, in sequence from the inlet to the outlet, an aluminum paste stirring kettle, an aluminum paste circulating pump, an aluminum paste metering tank and a concrete preparation device, and is connected with the concrete preparation device;feeding valves and cut-off valves are arranged in sequence between the aluminum paste circulating pump and the aluminum paste metering tank;one end of the feeding valve is connected with the aluminum paste circulating pump through a tee joint;the other end of the feeding valve is connected with a backflow valve through the other end of the tee joint;the other end of the backflow valve is connected with the top of the aluminum paste stirring kettle;the pipeline connected in sequence between the aluminum paste stirring kettle, the aluminum paste circulating pump, the feeding valve, the cut-off valve, the aluminum paste metering tank and the concrete preparation device is a feeding pipeline;the pipeline connected in sequence between the aluminum paste stirring kettle, the aluminum paste circulating pump and the backflow valve is a backflow pipeline;the pipeline design is optimized, and linkage control of each component is realized, so that the accuracy of the aluminum paste quality in the aluminum paste metering tank is improved, and the quality of concrete products is improved.

The application provides an oil inlet valve, which comprises a gasket and a plurality of valve plates, the surface of the gasket is provided with a plurality of gasket through holes, the valve plate is provided with a valve through hole, each valve through hole corresponds to a gasket through hole, and the valve plate is arranged on the gasket, wherein when power fluid flows from the gasket through hole to the valve through hole, the power fluid pushes the valve plate to make the valve plate tilt to form an inclination angle greater than 0 with the gasket; when power fluid flows from the valve through hole to the gasket through hole, the power fluid pushes the tilted valve plate to reset. The oil inlet valve realizes the flow effect through the cooperation of the gasket through hole and the valve through hole, and realizes the pressure regulating effect through the existence of the valve plate; the spread of the pressure fluctuation of the low-pressure cavity of the high-pressure pump to the low-pressure oil pipe is reduced, and the throttling problem when the low-pressure oil circuit supplies large oil to the high-pressure cavity is avoided, so that the performance of the high-pressure pump and the low-pressure oil pipe is improved, and the structure is simple and the work is reliable.

This utility model provides a speed control circuit for a taphole machine motor, relating to the technical field of control circuits, used to drive the drill rod of the taphole machine to rotate. It includes: a motor, an acceleration unit, a braking unit, and a proportional control unit. The acceleration unit includes: an electromagnetic directional valve and a pressure reducing valve; the system pressure is connected through the pressure reducing valve; the other end of the pressure reducing valve is connected to one end of the electromagnetic directional valve; the other end of the electromagnetic directional valve is connected to the motor, pushing the rotor to radially deflect. The braking unit includes: an overflow valve, check valve I, check valve II, check valve III, and check valve IV; the overflow valve, check valve I, check valve II, check valve III, and check valve IV constitute a hydraulic bridge circuit; the hydraulic bridge circuit provides bidirectional braking to the motor; the proportional control unit includes: a proportional directional valve, a pressure reducing valve, and a back pressure valve.

The invention relates to the technical field of energy storage liquid cooling liquid supplementing, and discloses a liquid supplementing device for an energy storage liquid cooling unit, which comprises a liquid supplementing device, the liquid supplementing device is connected with a liquid inlet interface of the energy storage liquid cooling unit through a liquid supplementing pipe, and the tail end of the liquid supplementing pipe is provided with a liquid supplementing joint; a magnetic suspension guiding butt joint module is integrated on the liquid supplementing connector and used for achieving non-contact type guiding and butt joint of the liquid supplementing connector and the liquid inlet connector. The temperature and pressure self-adaptive compensation module comprises an annular corrugated pipe air bag communicated with an internal air chamber of the energy storage liquid cooling unit, and the annular corrugated pipe air bag generates mechanical telescopic displacement in response to internal air temperature and pressure changes; the displacement detection unit is used for detecting the telescopic displacement of the annular corrugated pipe air bag; functions of magnetic suspension guiding butt joint, temperature and pressure self-adaptive compensation, Venturi defoaming, multi-sensor fusion and the like are integrated on a liquid supplementing connector, and a set of heat, force and liquid multi-field coupled closed-loop execution system is formed.