48results about How to "Automatic pressure control" patented technology

The invention discloses an automatic hydrogen fluoride feeding device for an electrolytic bath and a using method of the automatic hydrogen fluoride feeding device. The device comprises a hydrogen fluoride storage tank, an adjusting valve, a flow meter, a hydrogen fluoride passing header pipe, a nitrogen header pipe, a passing pipe and an electric circuit. A storage tank pressure adjusting valve, a corresponding storage tank pressure sensor, a nitrogen pressure adjusting valve, a corresponding nitrogen pressure sensor and the nitrogen header pipe are sequentially in pipe connection with the top of the hydrogen fluoride storage tank. A pipeline between the storage tank pressure adjusting valve and the nitrogen pressure adjusting valve communicates with a nitrogen source. One end of a nitrogen replacement valve is connected with the nitrogen header pipe, and the other end of the nitrogen replacement valve is connected with the passing pipe. A hydrogen fluoride outlet in the bottom of the hydrogen fluoride storage tank is sequentially in pipeline connection with the hydrogen fluoride flow adjusting valve, the hydrogen fluoride flow meter and the hydrogen fluoride passing header pipe. One end of a hydrogen fluoride passing valve is connected with the passing header pipe, and the other end of the hydrogen fluoride passing valve is connected with the passing pipe. One end of a pressure balance valve is connected with the passing pipe, the other end of the pressure balance valve communicates with a nitrogen emptying system, and the electric circuit comprises an electrolytic bath current sampling device and an automatic control system. The electrolytic bath can operate stably through the automatic hydrogen fluoride feeding device.

The invention relates to the technical field of gear machining, in particular to a gear machining deburring machine. The gear machining deburring machine comprises a top frame, a first motor is fixed to the top frame, an output shaft of the first motor is connected with a mounting frame, a second motor is fixed to the mounting frame, the end of an output shaft of the second motor is connected with a driving gear, the mounting frame is fixedly connected with a plurality of sliding rods through fixing plates, the sliding rods are annularly arrayed around the driving gear, supporting plates are perpendicularly fixed to two ends of each sliding rod, a rotating shaft is rotationally connected between each two supporting plates, one end of each rotating shaft is coaxially connected with a transmission gear, the transmission gears are meshed with the driving gear, the middle of each rotating shaft is provided with a spline shaft coaxially arranged with the rotating shaft, each sliding rod is sleeved with a sliding sleeve in sliding fit with the sliding rod, a mounting plate is fixed to each sliding sleeve, and a rotating ring is rotationally mounted on each mounting plate. With the gear machining deburring machine, the working efficiency of gear deburring machining can be improved.

The invention discloses a gas-lift reverse circulation well drilling system and an automatic control method. The system comprises a wellhead device, an in-well drilling tool, a flow line, a gas injecting pipeline, a drilling liquid injecting pipeline and an automatic control system, wherein the in-well drilling tool comprises a drill bit, a downhole electromagnetic PWD, a drill collar, a lower single-wall drill rod, a gas-water mixer, a double-wall drill rod, an air injection valve and an upper single-wall drill rod; each of the gas injecting pipeline and drilling fluid injecting pipeline is provided with an automatic throttle valve, a pressure gauge, a flowmeter and an automatic pressure relief valve; the automatic control system comprises a signal receiver, a computer, a display, a PLC (programmable logic controller) and a parameter input module; and during the gas lift reverse circulation drilling process, the automatic control system monitors the bottom pressure in real time, adjusts the gas injection quantity parameter and the drilling fluid injection parameter and realizes the automatic and accurate control of the bottom pressure. The system has the beneficial effects that the well control risk is reduced by matching with conventional well control equipment at a well mouth; and the bottom hole pressure is accurately controlled to prevent the occurrence of lost circulationand overflow.

The invention discloses an aerosol sample injection focusing device of a laser ablation plasma mass spectrometer. The device comprises an aerosol focalizer, a plasma mass spectrometer, an ablation pool and a laser. A sample to be ablated is placed in the ablation pool; carrier gas aerosol is conveyed into a carrier gas aerosol hose connected with the other end of the ablation pool; the carrier gasaerosol hose is connected with a gas inlet tube orifice of the aerosol focalizer and is used for oozing carrier gas; the rear end of a semi-permeable membrane tube is connected with a gas outlet tubeorifice; a sealing box surrounds the semi-permeable membrane tube to form an aerosol focalizer cavity; an electric flashboard is installed outside a gas release tube orifice to control the pressure in the aerosol focalizer cavity; and the carrier gas aerosol in a central tube enters the plasma mass spectrometer after being atomized and ionized, and a to-be-detected element in the aerosol is detected. By discharging the carrier gas, the ion concentration of the to-be-detected element entering the plasma mass spectrometer is increased, so that the sensitivity of the instrument is improved, andthe detection limit of the to-be-detected element is effectively improved under the condition that other instruments and devices are not changed.

The invention discloses a method and an automatic control system for carrying out continuous polymerization production of polyisobutene and belongs to the field of production process control. The method comprises the following steps: continuously adding reaction raw materials and a catalyst into a reactor according to a specified proportion to carry out polymerization reaction, continuously discharging reaction products from the bottom of the reactor, wherein the automatic control system for carrying out continuous polymerization production of polyisobutene is used for automatically controlling the liquid level and the pressure of the reactor; presetting the liquid level and the set pressure value of the reactor according to the actual production, carrying out real-time measurement on the liquid level and the pressure of the reactor by virtue of the automatic control system, comparing measured values with preset values, calculating and outputting a control signal so as to control the liquid level and the pressure of the reactor within a control range of the set values to realize the continuous and automatic production of polyisobutene.

The invention relates to a strength-assisting bouncing platform device which comprises a platform board and a backward somersault treadle. An air spring is arranged at the bottom of the platform board, a treadle oil cylinder is arranged at the bottom of the backward somersault treadle, an electric control device is arranged in a jump-assisting platform, the control output end of the electric control device is connected with a hydraulic device and a pneumatic device through signal lines, and a data input of the electric control device comprises an optoelectronic switch installed on the platform board. An electric control system automatically controls the inner pressure of the air spring according to the weight W of an athlete and the required jump-assisting height H. Due to the fact that the rigidity of the air spring can be controlled according to an inflation pressure, an assisting force of the spring can be changed in the same jump-assisting stroke to meet the required jump-assisting height H.

The invention relates a movable intelligent hazardous waste warehouse. The movable intelligent hazardous waste warehouse comprises a bottom plate, a top plate, a front plate, a left plate, a rear plate and a right plate. An intelligent control device is arranged on the outer wall of the left plate and connected to a 5G module, and a spraying assembly, an anti-explosion window, a waste gas treatment assembly, a constant-temperature and constant-humidity outdoor unit and a waste liquid collecting assembly are arranged on the outer wall of the rear plate. An air conditioner indoor unit is arranged on the inner wall of the rear plate, and the constant-temperature and constant-humidity outdoor unit is connected with the air conditioner indoor unit. The right plate is provided with an automatic fire extinguishing assembly. The top end of the top plate is provided with a top tower, the bottom end of the top plate is provided with an anti-explosion fluorescent lamp, the top end of the bottom plate is provided with a liquid collecting tank, and the top end of the liquid collecting tank is provided with a regular quadrangular air pipe. The regular quadrangular air pipe is fixedly connected with the left plate, the rear plate and the right plate respectively. The movable intelligent hazardous waste warehouse has the advantages that the storage environment in the warehouse is automatically controlled, safety protection in the warehouse is automatically controlled, the number and weight ledger of goods in the warehouse is automatically generated, and the domestic blank is filled up.

The invention discloses a computer casing polishing device. The polishing soft pad assembly of the present invention is provided with a polishing powder spraying assembly inside, and the polishing powder spraying assembly can spray the polishing powder below the polishing soft pad assembly, thus , using the combined effect of the polishing pad and the polishing powder to realize the polishing treatment of the computer casing, which can effectively enhance the brightness and surface quality of the casing, and prevent the occurrence of problems such as scratches. At the same time, the angle of the present invention is easy to adjust, and the pressure can be Automatic control to ensure the efficiency and quality of polishing. The invention sprays the polishing powder from all sides to ensure the uniformity of the polishing powder. The design of the outer protective cover and the lower protective cotton can effectively prevent the polishing powder from flying around and ensure the polishing environment. And it is convenient to recycle the polishing powder.

The invention discloses a plasma component rapid separation system which comprises a reaction tank, a manual valve is arranged at the lower end of the reaction tank, a stirring mechanism is arranged in the reaction tank, a liquid adding pipeline is arranged in the reaction tank, and the liquid adding pipeline is arranged in a U shape in the reaction tank. Two openings in the upper end of the liquid adding pipeline penetrate through the reaction tank and extend outwards, a liquid adding valve is arranged on the liquid adding pipeline, and a groove allowing liquid to penetrate through is formedin the liquid adding valve. The plasma component rapid separation system can automatically control pressure, and is simple in structure and convenient to use.

The invention relates to the technical field of mobile phone manufacturing, and discloses energy-saving machining equipment capable of ensuring uniform stress of a mobile phone mainboard. The energy-saving machining equipment comprises a machining base, a supporting plate is fixedly connected to the interior of the machining base, a protective frame is fixedly connected to the interior of the machining base, and a threaded column is rotatably connected to the interior of the protective frame; and the outer surface of the threaded column is movably connected with a moving plate, the outer surface of the moving plate is rotationally connected with a stretching frame, the outer surface of the stretching frame is movably connected with a first pull rope, and a rotating disc is rotationally connected to the position, located on the outer surface of the first pull rope, in the machining base. Through different release forces of the first pull rope, the rotation angle of a winding column is finally adjusted to be different, the release states of a second pull rope are different, the recovery effects of a limiting spring are different, the pressure of a positioning seat can be automatically controlled, damage to the mainboard is avoided, and the beneficial effect is brought to mobile phone machining.

The invention discloses a closed oil pump hydraulic system and engineering machinery having the same. The closed oil pump hydraulic system comprises a primer engine, a closed pump driven by the primer engine and used for outputting hydraulic power, an oil feeding pump driven by the primer engine and used for providing a control oil source and an oil feeding source to the operation of a closed pump, a pressure control device including an electric control valve arranged in an outlet of the oil feeding pump and used for controlling the pressure in the outlet of the oil feeding pump according to instructions, and an electric control device for monitoring a working state of the closed pump and controlling the connection and the disconnection of the electric control valve based on the working state of the closed pump. The closed oil pump hydraulic system can guarantee the pressure in the outlet of the oil feeding pump needed by the normal operation of the closed pump, and can realize the automatic operation of the oil feeding pump under lower pressure when the closed pump dose not work, so that the reduction of the energy consumption of the oil feeding pump is realized.

The invention relates to a test loop for testing a mechanical seal for a nuclear main pump. The test loop comprises a main loop system and a pressure control system; the main loop system comprises a water tank and a mechanical sealing tool; an outlet of the water tank is connected with an inlet of the mechanical sealing tool through a main pipeline; a plunger pump is arranged on the main pipeline; a backflow outlet of the mechanical sealing tool is connected with an inlet of the water tank, and the water tank and the mechanical sealing tool form a closed loop; the pressure control system comprises an expansion tank and a pressure source; wherein the expansion tank provides static pressure for a closed loop formed by the water tank and the mechanical sealing tool, and the first medium in the water tank flows to the mechanical sealing tool along the main pipeline under the power provided by the plunger pump and flows back to the water tank through the mechanical sealing tool so as to perform a sealing test on the mechanical sealing tool. The test loop for testing the mechanical seal for the nuclear main pump has the advantages of being clean in medium, capable of conducting a thermal shock test, high in safety and the like.

The invention discloses a stable pressure control system for a handheld polisher, comprising an oil tank, a hydraulic oil pump, a relief valve, a hydraulic cylinder, a pressure measurer, a central processing unit, a pressure switch, a manual switch, a power positive pole, a power negative pole, a first motor and a second motor; the oil tank is connected with the hydraulic oil pump which is connected with the relief valve, the relief valve is connected respectively with the hydraulic cylinder, the pressure measurer and thee pressure switch, and the hydraulic cylinder is connected to the oil tank; the power positive pole is connected to the manual switch, the manual switch is connected respectively to the pressure switch and the central processing unit, the pressure switch is connected to the first motor, the first motor is connected to the power negative pole, the central processing unit is connected to the pressure measurer, the central processing unit is connected to the second motor, the second motor is connected to the power negative pole, and the power output end of the second motor is connected to the hydraulic oil pump. The stable pressure control system provides automatic pressure control and has stable pressure, can provide reliable polishing quality for a polisher and has low technical skill requirements on workers.