38results about How to "Achieve pressure regulation" patented technology

The invention provides a production device and a production method for soft, clean and pure yarns. An upper rubber roll in each drawing roller pair is connected with a pressurizing assembly through aconnecting vertical rod which can be stretched or shortened, so as to realize pressure adjustment between the upper rubber roll and a lower roller in a spinning process through stretching or shortening control of the connecting vertical rod, and thus pressure adjustment of fiber strands between the upper rubber roll and the lower roller in a spinning process is realized. Thus, selection of fiberswhich can slide mutually in the fiber strands is realized. Therefore, on one hand, gradual change control of yarn density of spun yarns is realized, and on the other hand, through controlling differences of yarn density in the fiber strands, a process of few fibers in low yarn density wrapping multi-fibers in high yarn density in a twisting and yarn forming process is realized, so that integratedstructure control of inner-loose and outer-tight of yarns is realized, and development of yarns which are smooth and clean on surfaces and soft is realized.

The invention relates to the technical field of gas insulating materials of electrical equipment, in particular to a charging system and method for insulating mixed gas. The charging system comprises a mixed gas charging device and a temperature and pressure monitoring device. The mixed gas charging device comprises an SF6 charging gas circuit, a non-SF6 charging gas circuit, a test cavity pipeline, a vacuum bottle pipeline and a vacuum pump pipeline. The temperature and pressure monitoring device comprises a pressure gauge which is provided with an intelligent remote transmission component. The charging system can carry out charging, pressure adjustment and recovery treatment of mixed gas which has different pressure and different SF6 ratios and can also monitor the pressure, temperature and density of the mixed gas.

The invention discloses a hydraulic system, which comprises a main proportional pressure valve, a first proportional pressure valve, a second proportional pressure valve and a proportional flow valve, wherein the first proportional pressure valve is used for controlling the movement of a piston of a first clutch control oil cylinder which is connected in series with the first proportional pressure valve together with the main proportional pressure valve; the second proportional pressure valve is used for controlling the movement of a piston of a second clutch control oil cylinder which is connected in series with the second proportional pressure valve together with the main proportional pressure valve; and the proportional flow valve is used for controlling the movement of a piston of a synchronizer control oil cylinder which is connected in series with the proportional flow valve together with the main proportional pressure valve. A control unit of the hydraulic system is used for controlling each proportional pressure valve according to information from each pressure sensor for further controlling the on-off states of a first clutch and a second clutch and realizing accurate control over the position of a synchronizer according to information from the pressure sensors and a position sensor.

The invention relates to an energy source and a dynamical power system, in particular to a static pressure rotative machine with no need of external energy sources and external dynamical power. The static pressure rotative machine mainly comprises static pressure propulsion units (1) and a shaft (2), and is characterized in that the two or more than two static pressure propulsion units are symmetrically distributed around the shaft; and machine rotary motion can be realized without any external energy sources and external dynamical power.

The invention discloses a adjusting method of an oxygen pressure adjustment apparatus for an electric furnace. The oxygen pressure adjustment apparatus is characterized in that an oxygen gas total pipe is connected to a burning nozzle and an oxygen gun respectively through a main pipeline and a branch, the main pipeline is provided with a main pipeline shut-off valve and a main pipeline adjustment valve, and the branch is provided with a branch adjustment valve. With application of the structure, the oxygen pressure adjustment apparatus has the following advantages that: pressure adjustment of the electric furnace oxygen gas total pipeline can be achieved with a low cost, the change on the existing pipeline is less, and normal electric furnace use is not affected.

The invention discloses a multiplex gear pump energy-saving testing bench suitable for performance testing and reliability checking on various multiplex gear pumps, and relates to a testing bench. The multiplex gear pump energy-saving testing bench comprises a tested multiplex gear pump, loading elements, a synchromesh gearbox, power compensating components, testing elements, self-circulation filtering cooling devices and an oil tank. According to the multiplex gear pump energy-saving testing bench, the synchromesh gearbox is mechanically connected with loading hydraulic motors through the tested multiplex gear pump, the loading hydraulic motors are power and loads of the tested multiplex gear pump at the same time, power compensation is achieved through volume compensating pumps and a mechanical compensating motor, and power recovery is overall achieved. The multiplex gear pump energy-saving testing bench is simple in structure, good in power recovery effect and high in use reliability and practicability.

The invention discloses a balancing valve and a fluid balancing method. The balancing valve comprises a middle valve body, a left valve body and a right valve body, wherein the left valve body and theright valve body are arranged on two sides of the middle valve body, the left valve body and the right valve body are separately provided with a first fluid input control device and a second fluid input control device. According to the balancing valve and the fluid balancing method, the pressure gas is adopted to balance the gas pressure on both sides, and the pressure adjustment of the output gas can be realized by adjusting a pressure value of the pressure gas, so that the precision is high and the use is flexible.

The invention relates to a CCD (Charge Coupled Device) positioning and correcting die-cutting machine which comprises a die-cutting main machine used in a die-cutting process, a power case used for providing power for the die-cutting machine, a feeding assembly used for feeding materials, a pulling assembly used for discharging the materials and providing material transmission power, and a visual positioning mechanism used for positioning the materials in the die-cutting main machine, The die-cutting main machine is stably placed on the horizontal ground, the power case is installed on the rear side face of the die-cutting main machine, the feeding assembly and the material pulling assembly are oppositely installed on the two sides of the die-cutting main machine, and the visual positioning mechanism is installed over the die-cutting main machine. According to the die-cutting machine, the two sets of X-axis driving mechanisms and the two sets of Y-axis driving mechanisms which are independently controlled are utilized, each camera is rapidly, conveniently and independently adjusted to any position in the horizontal direction, in the adjusting process, shaking of the CCD camera is small, and the positioning precision is higher.

The invention discloses an anti-pollution oil tank pressure adjusting device. The device comprises an oil receiving disc, an adjusting rod, a force applying rod and an air discharging valve, wherein the oil receiving disc is arranged above an air discharging hole of a pressurizing oil tank, the bottom of the oil receiving disc extends into the air discharging hole, the adjusting rod extends into the air discharging hole of the pressurizing oil tank through a central hole of the oil receiving disc, the force applying rod is arranged at the top of the adjusting rod, the center hole is higher than the inner bottom face of the oil receiving disc, and the air discharging valve is arranged in the air discharging hole of the pressurizing oil tank. The device is simple in structure, light and convenient to carry, easy to maintain, capable of being repeatedly used and capable of meeting the requirement of pressure regulation of the pressurizing oil tank.

The invention relates to a fixed outlet temperature and pressure type flooded heater. A baffle is welded in a heater housing, so that a fluid entering the heater can be uniformly heated; an electric heating wire is sleeved with a molecular sieve, so that residues of the electric heating wire during burst due to local high temperature are prevented from entering a heating working medium to influence system running; and the electric heating wire is in threaded connection with the heater housing by adopting a flange, so that electric heating wires of different power can be conveniently replaced. When the heating working medium flows through the heater, the electric heating wire is completely dipped in the heating working medium to completely convert electric energy into fluid internal energy, and an electronic expansion value is used for adjusting the pressure of the fluid at an outlet of the heater to reach a required set value. According to the heater, when the working medium is heated, heat in the housing can be completely converted, and the pressure of the working medium at the outlet of the heater can be adjusted, so that a possibility is provided for precision control of the temperature and pressure values of the working medium in a specific state.

The invention relates to the technical field of safety valves and discloses a press type safety valve with a good stabilization effect. The press type safety valve comprises a valve body, the top of the valve body is fixedly provided with a valve cover, the top of the valve cover is movably provided with a moving rod running through the top of the valve cover and extending into the valve cover, the top of the moving rod is fixedly connected with a press button, and the left side and the right side of the moving rod are both fixedly connected with moving bins located inside the valve cover. According to the press type safety valve with the good stabilization effect, by means of the arrangements of horizontal springs and position-limiting rods, the position-limiting rods are made to be capable of moving horizontally left and right; by means of the manners that the left side of the left position-limiting rod is arranged in an inverted isosceles trapezoid, the right side of the left position-limiting rod is arranged in a horizontal T shape, and clamping blocks are provided eight and each clamping block is a horizontal right triangle, when the moving rod moves downwards through pressingof the press button, the clamping blocks clamp the position-limiting rods at the pressed positions, and pressure adjustment of a vertical spring is realized; and by means of the this structure, threaded connection is avoided, and the whole safety valve is made to be more stable.

The invention relates to a multiple anti-overflow porridge pot which comprises a pot body and a top cover clamped to the top of the pot body. An annular stepped boss is arranged on the inner cylindrical surface of the pot body, a middle cover is clamped and fixed on the annular stepped boss, the lower end of the top cover, the upper end of the middle cover and the inner wall of the pot body form an anti-overflow cavity, and the lower end of the middle cover, the inner wall of the pot body and the bottom of the pot body form a porridge cooking cavity. An annular handle is arranged in the middleof the outer wall of the pot body, an anti-overflow annular groove is formed in the upper end of the handle, and a handheld groove is formed in the lower end. An annular upper anti-overflow arc surface is arranged on the inner wall of the pot body at the top of the anti-overflow cavity. An annular lower anti-overflow arc surface is arranged on the inner wall of the pot body at the top of the porridge cooking cavity. Multiple anti-overflow structures such as the anti-overflow annular groove, the anti-overflow cavity, a cover foam piercing bulge and the anti-overflow arc surfaces are adopted, so that overflowing in the pot is effectively prevented in the porridge cooking process of people.

The embodiment of the invention discloses a control method of an air compressor and the air compressor. The air compressor comprises a motor, a threaded rod, a motor drive chip, a spring, an internalpressure adjusting device and a control unit. The motor drive chip is used for driving the motor to drive the threaded rod to move. The threaded rod moves to compress the spring so that the internal pressure adjusting device can be driven to move to achieve pressure adjustment. The method comprises the steps that an outage signal of an external power supply source of the control unit is detected in real time; a power supply source of the motor drive chip is turned off according to the outage signal; the motor drive chip is powered through an energy storage element; and after the power supply source of the motor drive chip is turned off, during the period when the energy storage element is discharged, relative data of a compression position of the spring and a preset reference point when the pressure is adjusted last time is saved. By means of the scheme, a power down state is automatically acquired when the air compressor is abnormally powered off, enough duration is reserved for information preservation, the situation that parameters are adjusted again every time when power is off, and convenience is provided for an operator.