63results about How to "Quick pressure" patented technology

The invention discloses a supercritical unit coordinated predictive function control algorithm. It is difficult for a conventional PID control system to consider the rapidity of load and stability of pressure and temperature at the same time, the quality of a coordinated control system needs to be improved. According to the supercritical unit coordinated predictive function control algorithm, predictive function control is applied to a pressure closed loop of a supercritical unit coordinated control system, a main steam pressure predictive function control system is formed. A control valve instruction and a coal quantity instruction are taken as a disturbance signal source of the whole pressure system. The predictive function control is applied to a temperature control loop of the supercritical unit coordinated control system, and an overhigh temperature prediction function control system is formed. A water supply instruction is taken as a disturbance signal source of a whole temperature system. According to the supercritical unit coordinated predictive function control algorithm, the control quality of the supercritical unit coordinated system is improved, and the rapidity of load and stability of pressure and temperature are considered at the same time.

The invention discloses an alcohol sales machine, which comprises a shell, wherein the shell forms a box body by a front shell, a back shell and side shells; an alcohol receiving window, an operating screen and an alcohol discharging button are arranged on the upper end of the front shell; an alcohol barrel observing window is arranged on the lower end of the front shell; a glass lifting door is arranged on the window part of the alcohol receiving window; an alcohol barrel is arranged on the lower end in the shell; a puncturing and alcohol pumping system corresponding to the alcohol barrel is arranged in the shell; an alcohol discharging box body is arranged in the alcohol receiving window of the shell; an alcohol discharging pipe is arranged in the alcohol discharging box body; an alcohol pumping pipe communicated with the alcohol barrel and the alcohol discharging pipe is arranged in the puncturing and alcohol pumping system; a lifting door lifting system for driving the glass lifting door to lift up and down to open and close is arranged on the glass lifting door. Through the alcohol sales machine, an alcohol dealer can automatically sell retailed alcohol capacity, and an alcohol buyer can take alcohol by himself/herself according to the obtained alcohol capacity, so that convenience is brought to retailed alcohol capacity bargaining transaction.

The invention discloses a flexible plastic quick grouting hole sealing device and method. The device is mainly composed of an umbrella buckle type plugging device, a slotting flexible plastic grouting pipeline and a double-cone pipe connector device. The initial grout pressure in pipes is positively stored in a sealed mode through the differential flow of grout fed into and discharged out of the grouting pipes, and the processes of automatic pushing out, spreading and plugging of a convex angle umbrella buckle are completed. A flexible plastic pipe capable of being coiled is adopted to be inserted into a drill hole at a time, and the primary quick hole sealing operation requirement is met. According to the flexible plastic quick grouting hole sealing device and method, the process of traditional hole sealing operation is simplified, operation is convenient and quick, the cost is low, and the device and the method are novel hole sealing device and method which have wide application and popularization value.

The invention relates to a flow meter, in particular to a diffusion tube type rectangular flow meter. The diffusion tube type rectangular flow meter comprises a measurement tube and body flanges welded to the two ends of the measurement tube, and a pair of pressure tapping flanges are welded to the measurement tube in the axial direction. The diffusion tube type rectangular flow meter is characterized in that a trapezoid throttling element is arranged at the position, below the pressure tapping flanges, in the measurement tube; the cross section of the trapezoid throttling element is in a circular notch shape, the front projection is in the inverted trapezoidal shape with the big upper portion and the small lower portion, two acute angles of the trapezoid are 15-60 degrees and 7-30 degrees respectively, and a negative pressure sampling hole is formed in the center of the throat. The diffusion tube type rectangular flow meter is unique in structure, high in accuracy, good in linearity, high in long-term working stability and reliability, long in service life, high in pressure recovery and small in perpetual pressure loss.

The invention discloses a pneumatic pantograph lifting device for a tram and a pantograph lifting control method. The pneumatic pantograph lifting device comprises an oil-free air compressor, an air filter, a brushless direct current motor, an air cooler, an air-water separator, a pollution discharge electromagnetic valve, a heater, a one-way valve, an ATM dryer, an overflowing valve and a pressure switch. The air filter is arranged at the inlet end of the oil-free air compressor, and the brushless direct current motor supplies power to the oil-free air compressor. The outlet end of the oil-free air compressor is connected with an inlet of the air cooler, an outlet of the air cooler is connected with an inlet of the air-water separator, and the air-water separator is provided with the pollution discharge electromagnetic valve. The pollution discharge electromagnetic valve is provided with the heater, an outlet of the air-water separator is connected with an inlet of the ATM dryer through the one-way valve, and an outlet pipeline of the ATM dryer is connected with the overflowing valve and a pressure switch in sequence. The pressure switch and the brushless direct current motor are connected. According to the pneumatic pantograph lifting device for the tram and the pantograph lifting control method, the problems that pantograph lifting of the tram is frequent and the compresses air grade requirement is high can be effectively solved.

The invention relates to the technical field of expansion tanks, in particular to a diaphragm expansion tank for water network pressure compensation. The diaphragm expansion tank comprises an expansion tank body, a gas bag is arranged in the expansion tank body, a support plate is fixedly connected to the exterior of the gas bag, and a support spring is fixedly connected to the exterior of the support plate; and a pressure sensor is arranged on the left side of the support spring, the left side of the expansion tank body is fixedly connected with a gas charging and discharging opening, and thetop of the expansion tank body is fixedly connected with a gas pressure meter. According to the diaphragm expansion tank for water network pressure compensation, the support spring is arranged outside the gas bag, the support spring is used for supporting the support plate to balance the pressure formed by expansion of the gas bag, the gas bag is extruded conveniently when the pressure of a waternetwork is reduced, water in the gas bag is conveyed into the water network, and the situation that the pressure in the water network is reduced too fast is avoided; and the problem that the water pressure cannot be compensated due to excessive gas leakage in a traditional expansion pipe is solved.

The invention discloses a temperature, pressure and air supply comprehensive testing device and method for aircraft electronic equipment. The device comprises: a box body, test space partition plates,a convection heat transfer system, a radiation heat transfer system, a vacuum system, an air supply system and a centralized control system, wherein the convection heat transfer system and the radiation heat transfer system cooperatively work to obtain the temperature required for the test; and when the pressure in the test space is low and the convection heat transfer system cannot exchange heatwell, the radiation heat transfer system can play the role of obtaining the required temperature. The device disclosed by the invention has the advantages that the realization is simple, the temperature of radiant panels can be rapidly changed and the temperature and the pressure can be simultaneously rapidly changed by cooperating with the convection heat transfer system and the vacuum system; and the sub-systems cooperatively work to ensure that the comprehensive testing requirements of temperature/pressure/air supply can be met and especially, the requirements for temperature changing andstabilizing can be met.

The invention provides a two-phase pressure-less container combustion water gas steam engine, which comprises a base, wherein an oil cylinder body is installed on the base, a manhole is formed in oneside of the oil cylinder body, the manhole communicates with the oil cylinder body, a flue port is formed in one side of the oil cylinder body, the flue port communicates with the oil cylinder body, an oil-gas mixing box is installed on the oil cylinder body, the oil-gas mixing box communicates with the oil cylinder body, and a compression inlet pipe is installed at the top of the oil cylinder body; with a reasonable design, the two-phase pressure-less container combustion water gas steam engine can solve the problems of not controlling and regulating steam pressure and temperature for a longtime, not dry-firing a boiler, not relieving the boiler pressure quickly and low thermal efficiency, and the steam engine has low energy consumption, high thermal rate, less water consumption, quick gas production, controllable and regulating temperature and pressure, high intelligent control, safety and coal gasification integrated combustion steam, so the gap in national defense is filled.

The invention provides a small integrated high-pressure pneumatic control valve, and solves the problems that an existing pneumatic control stop valve is relatively complex in structure and difficultto adapt to a large-vibration-force environment. The small integrated high-pressure pneumatic control valve comprises a shell, a valve element, a spring, a spring seat and a sealing assembly; an inletflow channel, a medium channel, a mounting cavity, a spring cavity and a control cavity which are sequentially communicated are formed in the shell; an outlet flow channel communicated with the medium channel is formed in the side wall of the shell; the valve core comprises a first blocking section, a second blocking section, a third blocking section and a fourth blocking section which are coaxially arranged in sequence; the first blocking section is located at the joint between the inlet flow channel and the medium channel; the second blocking section is arranged in the medium channel; the third blocking section is arranged in the mounting cavity, and a sealing assembly is arranged between the third blocking section and the mounting cavity; the fourth blocking section is arranged in thespring cavity, and an external thread is arranged at one end close to the control cavity; a small end of the spring seat is provided with a threaded hole connected with the fourth blocking section, and the outer circular surface of a large end is axially provided with a plurality of notches which are uniformly distributed along the circumference; an annular limiting boss is arranged on the springcavity; and the spring sleeves the fourth blocking section.

The invention relates to pressurization devices and water storage tanks, specifically to an RO automatic pressurization device and an RO automatic pressurization water storage tank. The RO automatic pressurization device is connected to the back of an RO permeator, and internally consists of a pure water chamber and a waste water chamber separated by an elastic diaphragm. The pure water chamber is equipped with an upper water inlet and an upper water outlet, while the waste water chamber is provided with a lower water inlet and a lower water outlet, and the inside of the waste water chamber is provided with a time-delay switch mechanism. The lower water outlet is equipped with a valve plug controlled by the time-delay switch mechanism. The lower surface of the elastic diaphragm is provided with a diaphragm handle, which drives the time-delay switch mechanism, and the elastic diaphragm moves under the pushing of differential pressure inside the waste water chamber and the pure water chamber. The RO automatic pressurization water storage tank is connected to the back of the RO automatic pressurization device, and is internally provided with an air bag, which divides the water storage tank into a water storage chamber and a pressure chamber precharged with a gas. The pure water in the RO permeator enters the water storage chamber after pressurization by the RO automatic pressurization device. The RO automatic pressurization device of the invention increases the feed water pressure of the RO automatic pressurization water storage tank, has a great water-making amount, and saves water resources.

The invention relates to a pressurization electric lubricating grease injector which is mainly applied to maintenance devices with lubricating grease injection requirements. The pressurization electric lubricating grease injector is characterized in that a circular cylinder groove and cylinder fixing bolt holes are formed in the end surface of the top of a fixing bottom plate, a cylinder is arranged in the circular cylinder groove, a connecting boss and a cylinder lug are arranged on the cylinder, and driven shaft supports of the fixing bolt holes are respectively arranged on the circular cylinder groove; supporting wheel supports and driving shaft supports are arranged on the end surface of the bottom of the fixing bottom plate, motor fixing holes are formed in the end surface of the bottom of the fixing bottom plate, and the driving shaft supports correspond to the driven shaft supports. The pressurization electric lubricating grease injector has the advantages that lubricating grease can be injected to a plurality of devices after being injected into the cylinder at one step, waste of the grease in a filling procedure is reduced, and the lubricating grease filling frequency is reduced; air in a gun of the injector does not need to be exhausted owing to a pressurization effect, trouble of exhausting the air is reduced, accordingly, the cost is lowered, the labor intensity of maintenance staff is reduced, and the maintenance time is shortened by 0.5 hour approximately.

A venting unit for a housing has a base body to be connected fluid-tightly to an edge of a housing opening of the housing. The base body has an exterior side and an inner side. The base body has a gas passage opening and a rim surrounding it. A membrane areally spans the gas passage opening transversely to an axial direction of the base body. The membrane is connected fluid-tightly to the base body at the rim of the base body and is arranged at the inner side of the base body. A clamping frame is connected to the base body at the inner side in a region radially outside of the rim of the base body. The clamping frame has a circumferentially extending clamping surface exerting a clamping force on the membrane to hold the membrane with friction fit between clamping frame and rim of the base body.

The invention discloses a combined oil cylinder anti-explosion valve assembly. The combined oil cylinder anti-explosion valve assembly comprises two oil paths; and each oil path comprises an oil cylinder, an explosion-proof valve, a plate-type ball valve, a pressure measuring joint, a pressure gauge, a pressure gauge switch, an overflow valve, a ball valve, a one-way valve, an explosion-proof valve, a plate ball valve, a pressure measuring joint, a pressure gauge, a pressure gauge switch, an overflow valve, a ball valve and a one-way valve, wherein the anti-explosion valve set is arranged on the cylinder side valve block. Under the normal condition, oil can quickly pass through the explosion-proof valve bank, and meanwhile, the pressure gauge of the cylinder side valve block monitors the oil way pressure in real time, so that a good preventive effect can be achieved for the emergency situation; the internal pressure can be adjusted in the maintenance process, so that the internal pressure and the pressure difference of the system under the normal working state are achieved; and meanwhile, when an oil cylinder breaks down, the ball valve and the one-way valve can provide safety guarantee for overhauling, the overflow valve in the assembly can also play a good pressure maintaining effect, the oil cylinder can run stably, and the service life of the oil cylinder is guaranteed.

The invention provides an oil draining and salt sprinkling method for fried peanuts. The method comprises the following steps of a fried peanut adding process that the fried peanuts are added to a fan-shaped tray; an oil draining process that a transmission shaft drives the fan-shaped tray to rotate, the fan-shaped tray swings up and down while rotating under the combined action of an annular track groove and a guide connecting rod assembly, and up-down shaking of the peanuts is achieved to complete oil draining; a seasoning adding process that intermittent seasoning spraying is achieved through cooperation of a piston assembly arranged in a seasoning box and a stirring unit; and a discharging process that a discharging opening formed in the side face of an annular support is used for being matched with vertical swinging of the fan-shaped tray to achieve discharging through vertical swinging when the fan-shaped tray rotates to the position of the discharging opening. The mixing of seasonings and the peanuts is more uniform, and the taste of the fried peanuts is ensured, so that the problem of residual oil on the surfaces of the peanuts, the problem in adding the seasonings simultaneously and the problem of equipment investment are solved.

The invention discloses a vertical surface roughness measuring head and a surface roughness instrument. The vertical surface roughness measuring head comprises a fixed frame, a movable frame, a displacement measuring module, a probe rod, a contact probe and a guide device, wherein the movable frame is vertically connected to the fixed frame in a sliding manner, the probe rod is arranged on the movable frame, the guide device is arranged on a bottom plate of the movable frame, the guide device can be used for vertically guiding the probe rod to prevent the probe rod from swinging, the contact probe is fixedly arranged at the bottom end of the probe rod, the probe rod penetrates through the guide device, the contact probe penetrates through the bottom plate of the movable frame, and the displacement measuring module is used for measuring the moving distance of the probe rod in the vertical direction. The surface roughness instrument comprises a frame body, a moving device and the vertical surface roughness measuring head. According to the invention, the contact probe and the probe rod are always perpendicular to the surface of a workpiece in the measurement process under the action of the guide device, the operation is simple and convenient, and the measurement accuracy is high.

The invention relates to a leakage test method of a polymerization kettle, and belongs to the technical field of chemical production. The leakage test method comprises the following steps ofS1, addinga monomer with the boiling point being -80 DEG C to 30 DEG C into the polymerization kettle; S2, injecting hot water into the polymerization kettle in the step S1, so that the monomer is heated to begasified, and the pressure in the polymerization kettle is increased; S3, observing a pressure value in the polymerization kettle, and stopping injecting the hot water when the pressure is increasedto 1 Mpa; S4, coating the joint of a kettle body and a pipeline flange and the joint of a stirring shaft and the kettle body with foam water, controlling the pressure in the polymerization kettle to be maintained for 10-15 minutes, and observing whether bubbles are generated or not; and S5, recovering the monomer in the polymerization kettle after detection is finished. The method has the beneficial effects that the detection time for leakage of the polymerization kettle can be greatly shortened, so that the utilization rate of the polymerization kettle is improved, and meanwhile, the production benefit of an enterprise is improved.