34results about How to "Improve pressure relief efficiency" patented technology

The invention relates to the technical field of fuel cell control, in particular to a fuel cell air supply system and a pressure relief control method thereof. It includes a fuel cell cathode, an air compressor connected to the fuel cell cathode inlet, and a tail discharge valve connected to the fuel cell cathode outlet, and is characterized in that: a valve for adjusting the fuel cell cathode inlet pressure relief valve; a back pressure valve for regulating the outlet pressure of the fuel cell cathode is provided between the outlet of the cathode of the fuel cell and the tail discharge valve; it also includes a pressure relief valve electrically connected with the back pressure valve for controlling the discharge The pressure relief control device for the opening and closing of the pressure valve and the opening of the back pressure valve. The invention not only improves the pressure relief efficiency, but also can fundamentally solve the problem of water blockage inside the cathode of the fuel cell.

The invention provides a front-end feeding manipulator for assembling perforated bricks, comprising: an installation bracket, which is used as an installation carrier for installing other components; a material-moving mechanism is rotatably installed on the installation bracket, and the material-moving mechanism The main shaft can realize radial rotation and axial movement, and the end of the main shaft extends to the outside of the mounting bracket; the manipulator body is installed at the end of the output shaft, and the center of gravity of the manipulator body is located at the center of the main shaft. On the axis, the manipulator is provided with four elastic claws arranged in a square form, and the side walls of the elastic claws are provided with airbags; when the manipulator body is vertical, it is the reclaiming station, and when the manipulator body is horizontal In the state, it is the discharging station. The front-end feeding manipulator used for the assembly of porous bricks has the advantages of compact structure, low manufacturing cost, reliable and stable operation, and good handling effect.

The invention relates to a flameless pressure relief device. The flameless pressure relief device comprises an explosion venting plate and an explosion venting shell, wherein the outlet of the explosion venting shell is equipped with a fire-retarding layer which is of a multi-layer type structure; the mesh number of the outer layer of the fire-retarding layer is greater than that of the inner layer of the fire-retarding layer; a middle layer is arranged between the inner layer and the outer layer; the middle layer is a metal net layer which is formed by superposing and spreading single metal net layer by layer; netting wires between upper and lower layers of the metal net are crossed in a different-surface oblique-angle mode or are formed by arranging a plurality of metal rings in a multi-layer mode; metal wires of the fire-retarding layer are formed by knitting in a hooked needle mode; and the structure of each metal ring comprises a circular ring foil and a crossed blade, wherein thecrossed blade and the circular ring foil are connected at an oblique angle. The flameless pressure relief device disclosed by the invention can effectively gather dust and can prevent flame from spreading in addition to having the advantages of being great in pressure relief area and high in pressure relief efficiency, so that man-machine safety is further guaranteed.

An electromagnetic pressure relief valve comprises an outer frame, an integrated magnet, a plastic air tap, a coil module, a movable inner core and a spring. The outer frame is provided with a through hole. The integrated magnet is provided with a hollow channel. One end of the plastic air tap penetrates the through hole and is exposed outside, the other end thereof penetrates the channel, and an air inlet of the plastic air tap is exposed. The coil module is fixed in the outer frame and provided with a hollow groove which is sleeved outside the integrated magnet. The movable inner core is arranged in the hollow groove in a slidable mode, and one end portion of the movable inner core is provided with a leakage-stop spacer used for sealing the air inlet. The spring is connected between the plastic air tap and the movable inner core, and enables the leakage-stop spacer to be away from the air inlet through elastic force. When the coil module is powered on to perform excitation, the integrated magnet and the movable inner core are mutually attracted to resist the elastic force of the spring so as to enable the leakage-stop spacer to seal the air inlet.

A self-adaptive irrigation system pipeline water hammer impact reducing device, comprising a valve inlet pipeline (1), a reducer (4), and a water hammer response channel. The reducer (4) and the outer wall of the valve inlet pipeline (1) form a closed annular cavity; the edges of an isolating reinforcement plate (21) are respectively connected to the inner wall of the reducer (4) and the outer wall of the valve inlet pipeline (1); a pressure relief action block (8) is attached to the inner wall of the reducer (4) and the outer wall of the pipeline, the isolating reinforcement plate (21) and a first end surface of the pressure relief action block (8) form a pressure relief cavity, a water discharging port is formed in the pressure relief cavity, the isolating reinforcement plate (21) and a second end surface of the pressure relief action block (8) form an action cavity, and the water hammer response channel is in communication with the action cavity and an inner cavity of the valve inlet pipeline (1); a pressure relief hole (11) and a pipeline hole (18) are completely staggered under a normal water conveying state, and the pressure relief hole (11) is in communication with the pipeline hole (18) under a pressure relief state. The water hammer impact reducing device can actively respond the water hammer impact of a valve in an irrigation water distribution pipe network, effectively reduce the water hammer impact, guarantee the safety of key components of the irrigation water distribution pipe network, and improve the stability of an irrigation water distribution system, and is applicable to a multi-user random irrigation water distribution pipe network working condition.

The invention relates to the technical field of pressure transmitters, and is used to solve the problem of poor overpressure protection effect of existing pressure transmitters, specifically a pressure transmitter with overpressure protection, including an inlet pressure chamber, a conversion There is a pressure input port at the bottom of the inlet pressure chamber, buffer chambers are arranged on both sides of the inlet pressure chamber, an input pipeline is fixedly connected between one end of the buffer chamber and the inner side wall of the inlet pressure chamber, and the other end of the buffer chamber is connected to the inner side wall of the inlet pressure chamber. A connecting pipe is arranged between the inner walls of the pressure chamber, a pressure relief pipe is fixedly connected to the inner wall of the buffer chamber away from the pressure inlet chamber, and a buffer diaphragm is arranged between the inner walls of the buffer chamber; the present invention provides a buffer diaphragm in the buffer chamber As well as compressible fluid, it can prevent the pressure fluid from continuously entering the pressure chamber until the pressure exceeds the threshold before overpressure protection is performed, causing damage to the pressure sensor.

The invention discloses a multifunctional electric control pressure release device which comprises two three-way valves (2) that are communicated with each other, wherein the two three-way valves (2) are communicated with a standpipe pressure release valve (7) and a unit pressure release valve (6) respectively, and communicated with a one-way valve (3); and a center line of the one-way valve (3) and center lines of the three-way valves (2) are in the same straight line. The invention further discloses an electric control system and an electric control method based on the multifunctional electric control pressure release device. The pressure release device can solve the problems of insufficient pressure release, long pressure release time and the like of the existing pressure release device during pressure release; with the adoption of the standpipe pressure release valve and the unit pressure release valve, gas pressure is released from two pressure release ports, and the pressure release efficiency is improved; and with the adoption of the one-way valve, gas in the pressure release device cannot flow back, the service life of equipment is ensured, harms arising from the backflow gas are avoided, the gas pressure can be monitored, and valve opening can be mastered accurately.

A sprinkler assembly (100), comprising a spray head assembly (110), a pressure switch (120), a water pump device (130) and a main pipe (141), the main pipe (141) is inclined relative to the horizontal plane, and the first pipe adjacent to the main pipe (141) The pressure switch (120) provided at the end (1411) is used to connect the liquid inlet channel (111) and the exhaust channel (113), so as to discharge the gas in the spray assembly (110). It also relates to a spraying system, a mobile device and a spraying method.

A pump assembly (100), a spraying system (10), a mobile device (1000) and a spraying method. The pump assembly (100) includes a water pump device (110), a liquid distributor (120), and a pressure relief mechanism (130), and the liquid distributor (120) includes liquid outlet pipes (121) equal in number to the water pump device (110). And at least one liquid inlet pipe (122), the liquid inlet pipe (122) communicates with the liquid supply tank (200) of the spraying system, and the liquid outlet pipe (121) communicates between the liquid inlet pipe (122) and the water pump device (110) , used to guide the liquid in the liquid supply tank (200) to the water pump device; the liquid distributor (120) is provided with a pressure relief port (140), and the pressure relief mechanism (130) is operated to open or close the pressure relief The port (140), when the pressure relief port (140) is opened, the gas in the pump assembly (100) can be discharged through the pressure relief port (140). The pump assembly can avoid liquid medicine waste and reduce labor costs.