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

The invention discloses a singlechip based control device for constant-pressure atomization of a pipeline. The device comprises a leakage switch, a transducer, a singlechip, a pressure transmitter, a first signal conditioning circuit, a second signal conditioning circuit, a first auxiliary power supply and a second auxiliary power supply, wherein the power supply end of the leakage switch is connected with a three-phase power supply, while the load end is connected with the transducer; the transducer is used for driving an external variable frequency motor and a water pump to make mechanical motion; a water outlet end of the water pump is connected with a liquor piping; the pressure transmitter is used for detecting the pressure of a liquor in the liquor piping; the pressure transmitter is connected with the singlechip through the first signal conditioning circuit; the singlechip is connected with an analog control end of the transducer through the second signal conditioning circuit, and is also connected with the first auxiliary power supply; and the pressure transmitter is also connected with the second auxiliary power supply. The control device can control the pressure of the liquor piping in time and avoid pesticide waste.

The invention relates to an electrohydraulic inverse proportion pressure reducing valve and belongs to the field of hydraulic control. The proportion pressure reducing valve comprises a valve body, avalve element, a cylinder plug, a first resetting spring, a second resetting spring, a proportion electromagnet and a baffle. A stepped valve cavity is adopted, when the electromagnet does not work, the work pressure output by the pressure reducing valve is maximum, along with increasing of current, the electromagnetic pushing force output by the electromagnet increases, the work pressure of the pressure reducing valve is gradually reduced, the hydraulic force in a work cavity of the valve element is balanced with the spring force and the electromagnetic force, and pressure adjusting of a hydraulic oil way is achieved. The structure of the pressure reducing valve is greatly simplified, and the production cost is reduced. The inverse proportion pressure reducing valve can improve the stability and the control precision of work of the system.

The invention relates to integrated gas supply equipment for LNG. The integrated gas supply equipment for the LNG comprises an LNG storage tank, wherein the bottom of the LNG storage tank is connected with a first carburetor, a low-temperature boost regulating valve and a four-way valve through pipelines in sequence; the four-way valve is connected with the top of the LNG storage tank through a pipeline; the bottom of the LNG storage tank is also connected with a low-temperature buck regulating valve through a pipeline; the other end of the low-temperature buck regulating valve is connected with the four-way valve through a pipeline; the pipeline used for communicating the low-temperature buck regulating valve and the LNG storage tank is also connected with a second carburetor; a gas outlet end of the second carburetor is connected with a user terminal through a pipeline. According to the integrated gas supply equipment for the LNG, the pressure regulation in a tank body is realized so that the tank body is kept within a set pressure range all the time; a supply effect is guaranteed; potential safety hazards are eliminated; moreover, the integrated gas supply equipment is simple in structure and convenient to mount.

The invention discloses a damping motor. The damping motor comprises a motor body, a base and a plurality of damping devices; the damping devices are connected with the base and the motor body; each damping device comprises a pneumatic shock absorber used for vertical damping, a spring shock absorber used for assisting vertical damping and a horizontal shock absorber used for horizontal damping; the pneumatic shock absorber comprises an outer cylinder and a pneumatic rod moving relative to the outer cylinder; an air cavity is formed between the pneumatic rod and the outer cylinder; an air valve for introducing compressed air is arranged at the upper end of the outer cylinder; the spring shock absorber comprises a vertical shock absorption spring and a pressure adjusting flange plate used for adjusting the pre-tightening pressure of the vertical shock absorption spring; the horizontal shock absorber comprises a sliding table, a sliding base, a plurality of rolling balls and four horizontal shock absorption assemblies; and the four horizontal damping assemblies are arranged in pairs on the two sides of the sliding table. The damping motor has the beneficial effects that: the structure is simple, the multiple damping devices can be independently adjusted, buffering and damping can be conducted in multiple directions, and the damping effect is good.

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 a CCD positioning deviation correcting die-cutting machine, which includes a die-cutting host used in the die-cutting process, a power chassis used to provide power for the die-cutting machine, a feeding assembly used for material feeding, and a A material pulling assembly that provides power for material transmission and a visual positioning mechanism for locating the position of the material in the die-cutting host. The die-cutting host is placed stably on a level ground. The material component and the material pulling component are relatively installed on both sides of the die-cutting main machine, and the visual positioning mechanism is installed directly above the die-cutting main machine. In this die-cutting machine, two sets of X-axis drive mechanisms and two sets of independently controlled X-axis drive mechanisms are used. The Y-axis drive mechanism can quickly and conveniently adjust the arbitrary position of each camera individually in the horizontal direction. During the adjustment process, the CCD camera shakes less and the positioning accuracy is higher.

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 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.

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 integrated gas supply equipment for LNG. The integrated gas supply equipment for the LNG comprises an LNG storage tank, wherein the bottom of the LNG storage tank is connected with a first carburetor, a low-temperature boost regulating valve and a four-way valve through pipelines in sequence; the four-way valve is connected with the top of the LNG storage tank through a pipeline; the bottom of the LNG storage tank is also connected with a low-temperature buck regulating valve through a pipeline; the other end of the low-temperature buck regulating valve is connected with the four-way valve through a pipeline; the pipeline used for communicating the low-temperature buck regulating valve and the LNG storage tank is also connected with a second carburetor; a gas outlet end of the second carburetor is connected with a user terminal through a pipeline. According to the integrated gas supply equipment for the LNG, the pressure regulation in a tank body is realized so that the tank body is kept within a set pressure range all the time; a supply effect is guaranteed; potential safety hazards are eliminated; moreover, the integrated gas supply equipment is simple in structure and convenient to mount.

The invention discloses 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 novel margarine production system comprising a filtering and sterilizing device, a pre-cooling device, a quenching device, a refrigeration supplying device, a kneading device and a hot water supplying device. The margarine production system disclosed by the invention is provided with a filtering and sterilizing link so as to guarantee the quality of materials; the pre-cooling device is arranged to reduce the temperature before materials enter a quenching machine and guarantee the cooling effect of the materials entering the quenching machine; the quenching machine isinternally provided with an in-shaft hot water circulation so as to avoid freezing the materials on a shaft; the kneading machine is internally provided with a temperature-raising control link so as to eliminate the influences on the quality of a kneading process by crystallizing heat and mechanical heat; and furthermore, back pressure adjusting devices are respectively arranged at material outlets of the quenching machine and the kneading machine so as to adjust pressures in the quenching and kneading processes. The novel margarine production system disclosed by the invention can realize temperature, pressure, temperature-raising control and the like in a margarine production process, so that the problem of the traditional margarine processing equipment that the process is rough, the quality is difficult to monitor and the like are solved and the quality of the margarine is guaranteed.

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.