12results about How to "Reduce output pressure" patented technology

The utility model discloses an optimized water supply system, relates to the technical field of water supply optimization, and aims to solve the problem that the output pressure of an existing common pressure reducing valve does not change along with the output flow. An optimized water supply system comprises a main valve of a pressure reducing valve and a pilot valve, a pressure sensor and a flow sensor are arranged on an output pipeline of the main valve of the pressure reducing valve, a remote pressure sensor is further arranged on the most disadvantageous water distribution point, and a flow adjusting valve is arranged on an input pipeline of the main valve of the pressure reducing valve. The pressure sensor and the flow sensor are electrically connected with the controller; the pilot valve comprises a servo motor; and the controller is electrically connected with the servo motor. According to the optimized water supply system, the output pressure of a common pressure reducing valve can be changed along with the output flow, the output pressure is low when the flow is small, the situation that a pipeline system bears high pressure all the time regardless of the flow is avoided, and therefore the water leakage rate and the pipe explosion rate are reduced.

The invention provides a closed expansion water tank and a cleaning method thereof, and relates to the technical field of expansion water tanks, the closed expansion water tank comprises a tank body, the tank body is divided into four cavities through three partition plates with holes in the tank body, an access hole is machined in an upper panel of the tank body, a flange is welded to the access hole, and the access hole is blocked through a cover plate. The cleaning method comprises the steps that sodium bicarbonate is made into 30-120-mesh composite material crystal particles through a special technology, and the hardness of the crystal particles is Morse 2.3-3.0; the crystal particles are driven by air pressure through an access hole formed in the upper portion of the tank body, and dirt is removed from the interior of the expansion water tank through blasting, impact, friction, stripping and cutting generated at the moment of collision in a physical flexible striking mode. A new cleaning technology is adopted, the scrapped expansion water tank is recycled, and recycling of waste products is achieved; no dust is generated in the cleaning process, and food-grade products are free of chemical pollution.

The utility model relates to the technical field of air-cooled heat exchange of flow batteries, and discloses an air-cooled heat exchange device of a flow battery, which is characterized by comprising a ventilation fence, a pipeline structure and a plurality of heat exchange structures, the multiple heat exchange structures are all arranged on the ventilation fence and used for conducting heat exchange on the electrolyte, and the pipeline structure is arranged on the heat exchange structures and used for guiding the hot electrolyte to the heat exchange structures and guiding out the cooled electrolyte; the diameter of the input end of the heat exchange structure is gradually reduced in the direction from the input end to the output end; when wind blows through the heat exchange structures, the output pressure of the output ends of the heat exchange structures is reduced, the heat exchange structures are arranged on the ventilation fence for heat exchange, and the special arrangement that the diameters of the input ends of the heat exchange structures are gradually reduced in the direction from the output ends is matched, so that the throttling effect is generated when the wind blows through the heat exchange structures; the output pressure of the output end of the heat exchange structure is reduced, a large amount of heat is taken away, the electrolyte is guided to the heat exchange structure in cooperation with the pipeline structure, and therefore heat exchange is completed.

The invention relates to a device (1) for supplying hydrogen (H2) by means of an electrolysis unit (2), which enables the service life of the electrolysis unit (2) to be as long as possible even in the event of fluctuations in the energy supply of the electrolysis unit (2), a reciprocating piston compressor (3) is provided for compressing hydrogen (H2) generated by the electrolysis unit (2), the reciprocating piston compressor (3) has at least one automatic suction valve (5), is provided with a lifting gripper (6) for selectively holding the suction valve (5) in an open position, is provided with an electrically actuatable actuator (7) for actuating the lifting gripper (6), and is provided with a control unit (4) for controlling the actuator (7), which control unit (4) is designed to actuate the actuator (7) in such a way that the actuator (7) can be actuated by the lifting gripper (6). In this way, the output pressure (p1) of the hydrogen gas (H2) at the output of the electrolysis unit (2) or the pressure difference (p) between the anode and the cathode of the electrolysis unit (2) can be adjusted to a predetermined setpoint value (p1soll, psoll).

The utility model discloses an energy accumulator, which relates to the technical field of fluid energy storage equipment and comprises an energy accumulator body, a piston, a heavy hammer and an air bag, the energy accumulator body comprises an energy accumulator cylinder body; the lower portion of the energy accumulator cylinder body is provided with an oil inlet connector, an oil discharge connector and an oil supply port, and the upper portion of the energy accumulator cylinder body is provided with an oil recovery port. The piston, the heavy hammer and the air bag are arranged in the energy accumulator cylinder body; the heavy hammer is arranged above the piston; an air bag is arranged in a central groove in the lower part of the piston; the piston lifting device comprises a driving unit and a pulley mechanism; the driving unit is connected with the pulley mechanism, and the pulley mechanism is connected with the piston, so that when the piston, the air bag and the heavy hammer act together, the effect of the heavy hammer energy accumulator which assists in increasing the pressure regulating reaction speed through the air bag is achieved; or when the driving unit, the pulley mechanism, the piston, the heavy hammer and the air bag act together, the effect of the heavy hammer energy accumulator which can adjust the output pressure through the driving unit and can assist in improving the pressure adjusting reaction speed through the air bag is achieved.

The invention belongs to the technical field of pressure and flow stabilizing devices, and particularly relates to a gas pressure and flow stabilizing device and an industrial gas transmission system.The gas pressure and flow stabilizing device comprises a valve body, a pressure regulating valve module, a gas flow stabilizing valve module and a flow regulating valve module; a pressure stabilizing structure cavity and a flow stabilizing structure cavity are formed in the valve body, and the pressure regulating valve module is arranged in the pressure stabilizing structure cavity and divides the interior of the pressure stabilizing structure cavity into a lower air inlet cavity and an upper pressure stabilizing cavity. The airflow stabilizing valve module is arranged in the flow stabilizing structure cavity; the flow regulating valve module is arranged on the three-way connecting pipeline and is used for regulating the flow of the gas conveyed to the flow stabilizing structure cavity; the pressure regulating valve module is linked with the gas flow stabilizing valve module, so that the quantity demanded of gas during welding can be reduced to the minimum through automatic regulation of gas pressure and gas flow in the pressure and flow stabilizing device under different pressures, and meanwhile, the gas using requirement during welding can be met.

The present invention discloses a gas shielded welding conductive nozzle, which comprises a conductive nozzle body, a gas diffuser arranged at the front end of the conductive nozzle body, and a guide nozzle arranged at the front end of the gas diffuser. A ceramic protector is arranged in the conductive nozzle body and the gas diffuser. The ceramic protector is provided with a core hole for the welding wire to pass through. The welding wire passes through the ceramic protector through the core hole and is led out from the guide nozzle. The gas diffuser is provided with air holes for the shielding gas to pass through. After the shielding gas passes through the air holes, a linear and mutually non-interfering airflow is formed. The airflow surrounds the welding point of the guide nozzle to form a protective atmosphere. The gas shielded welding conductive nozzle of the present invention utilizes a ceramic protector to automatically center the welding wire, reduce wear, isolate heat conduction, and realize continuous welding at high temperature. The gas diffuser is utilized to increase the gas delivery speed and reduce the output pressure of the gas cylinder, effectively improve the utilization rate of carbon dioxide, reduce emissions, and improve welding quality. In addition, the conductive nozzle adopts a split structure, and parts can be replaced as needed to reduce the use and maintenance costs.

The utility model provides an electro-hydraulic composite power control structure for a hydraulic pump, which comprises a valve body, a valve sleeve is arranged in the valve body, a slidable top core and a valve core are arranged in the valve sleeve, an oil cavity in the valve sleeve is divided into a left end oil cavity and a middle oil cavity by the top core and the valve core, and a right end oil cavity is arranged on the inner wall of the right end of the valve sleeve; the upper end of the valve body is provided with an oil channel for introducing electromagnetic valve pressure oil and an oil channel for pumping pressure oil, the oil channels are respectively connected with inlets of the electromagnetic valve pressure oil channel and an oil drainage channel, and outlets of the electromagnetic valve pressure oil channel and the oil drainage channel are connected with a control electromagnetic valve; an electromagnetic valve pressure oil channel and a pump pressure oil channel are introduced to enable pressure oil to act on the ejector core and the valve element respectively, the ejector core and the valve element are pushed to move, and a plug used for limiting the ejector core is arranged at a counter bore in the left end of the valve sleeve. Belongs to the technical field of hydraulic pump control structure optimization. According to the utility model, the pressure of the electromagnetic valve is added, so that the originally required pump output pressure is reduced, and the power reduction requirement of the hydraulic pump is met.

The present invention discloses a portable high-pressure cleaning machine and a high-pressure pump control method thereof. The high-pressure cleaning machine using this control method comprises a machine body, a handle, a trigger and a start switch, wherein the start switch is located on the handle and the trigger can operate the start switch. The machine body is equipped with a power supply unit, a motor and a high-pressure pump, and further comprises: a control module, a pressure setting module for presetting the outlet pressure of the high-pressure pump and a pressure detection module for detecting the outlet pressure of the high-pressure pump. The control module adjusts the output power of the motor through the pressure signal provided by the pressure detection module, so that the outlet pressure of the high-pressure pump is maintained at the preset value of the pressure setting module. The present invention eliminates the reduction in efficiency caused by the pressure relief circuit, avoids the reduction in output pressure and flow caused by the reduction in battery pack voltage, and realizes the universal interchangeability of multiple spray guns.

The utility model relates to a bridge maintenance device which comprises a bridge guardrail and further comprises a track, a base and a lifting seat, the track is installed on the bridge guardrail in a splicing mode, and clamping plates are rotationally connected to the two sides of the track. The base is arranged above the rail and connected through a moving structure, a rotating table is arranged on the rear portion of the top end of the base, a rotating arm is arranged on the rotating table, and a weight box is fixedly connected to the rear end of the base. The lifting seat is connected to the front end of the rotating arm, the front end of the lifting seat is provided with a sliding groove and connected with the lifting table in a sliding mode, the front end of the lifting table is fixedly connected with the bearing portion, the sliding groove is provided with a plurality of through holes, the lifting table is fixed through plug pins in an inserted mode, and the lifting table is controlled through lifting ropes in a lifting mode. The whole equipment stands on the bridge guardrail, occupied road surfaces are reduced, and the equipment is conveniently fixed in a plug pin mode.

The invention discloses a die-casting local pressurization control device capable of automatically correcting, which comprises a hydraulic unit and a pressurization unit arranged on one side of an injection chamber of a die-casting module, the pressurization unit comprises a shell, a piston, a pressurization rod, a push rod, a dispatching disc, a pressurization pipe and a proportioning valve, and the shell is internally provided with a hydraulic chamber and a plurality of pressure regulating chambers which are communicated with each other; the push rod is located in the pressure adjusting cavity to push the piston to slide along the inner wall of the hydraulic cavity so as to drive the pressurizing rod to move in an injection chamber of the die-casting module. Pressurizing pipes matched with the pressure regulating chambers in number and position are arranged at one end, close to the shell, of the dispatching disc, so that each pressure regulating chamber is communicated with the dispatching disc through the pressurizing pipes; the proportional regulating valve is arranged in the pressurizing pipe to control the flow of hydraulic oil input into each pressure regulating cavity so as to correct the local output pressure of the pressurizing rod according to the pressurizing rule of the die-casting module, the pressurizing speed is effectively regulated, and the shrinkage phenomenon caused by too fast or too slow pressurizing in the die-casting process is avoided.