7results about How to "Implement injection" patented technology

The invention relates to the technical field of heavy oil reservoir exploitation, in particular to a device and a method for realizing viscosity-reducing huff-puff exploitation of heavy oil by injecting natural gas into a well and pressurizing. According to the technical scheme, a gas supply pipeline is tripped into an annular space between a sleeve and a pump cylinder, the upper end of the gas supply pipeline is connected with a natural gas injection device on the ground, and the lower end of the gas supply pipeline is communicated with a gas inlet of an underground natural gas booster pump; a gas injection packer is installed on the lower middle side of a pump cylinder, an oil inlet hole is formed in the pipe wall of the lower side of the gas injection packer, and the lower end of the gas injection packer is connected with an underground natural gas booster pump through a transition adapter. The device has the advantages that the pressure of natural gas can be increased in a relay mode, the natural gas is dynamically mixed and dissolved in thickened oil, the viscosity of the natural gas is remarkably reduced, the natural gas is increased along with volume expansion, flowing to a shaft is facilitated, in addition, the foam oil effect can be formed, and the functions of reducing viscosity and increasing yield of a thickened oil reservoir are achieved; and the total operation cost is lower than the steam thermal recovery cost, and the safety is also greatly improved.

This invention discloses a method and system for impedance measurement of renewable energy power plants based on cascaded H-bridge SVG, comprising: connecting the SVG to the power system in a direct parallel connection to act as a current source outputting inductive or capacitive reactive current into the power system; controlling the output signal of the control loop to superimpose an adjustable disturbance current component into the output reactive current, thereby injecting a disturbance measurement signal into the power system; measuring the voltage and current response of the power system based on the injected disturbance measurement signal, and calculating the impedance of the renewable energy power plant. This invention can complete the impedance measurement of renewable energy power plants without adding new equipment and ensures measurement accuracy.

The application discloses a grid-connected type hybrid energy storage configuration of an off-grid hydrogen production system and a control method thereof, and relates to the technical field of renewable energy hydrogen supply. The system comprises a wind power generation unit, a photovoltaic power generation unit, a grid-connected type hybrid energy storage unit, an electrolytic cell unit and a controller. The wind power and the photovoltaic power generation are connected to an alternating current bus through a converter to provide renewable power for the system; the hybrid energy storage unit is composed of a super capacitor and a lithium battery, and is connected to the alternating current bus in a bidirectional mode through an energy storage converter; and the electrolytic cell is connected to the alternating current bus through an AC / DC converter. In the control method, the frequency of the alternating current bus is detected in real time, a frequency modulation dead zone is set, the super capacitor and the lithium battery are controlled to participate in frequency modulation adjustment in a time-sharing mode, and the frequency stability of the system and the continuity of electrolytic hydrogen production are ensured. The application has the advantages of fast frequency response capability, grid-connected operation capability and high-efficiency hydrogen production performance, and is suitable for the construction of green hydrogen energy systems in remote areas and in scenes without power grid access.

The invention discloses a new material nano barium sulfate powder particle size detection device, and relates to the technical field of powder particle size detection, the new material nano barium sulfate powder particle size detection device comprises a machine body and a cover plate assembly, the surface of the machine body is provided with an installation cavity, and the bottom of the inner wall of the installation cavity is provided with a detection port. According to the novel material nano barium sulfate powder particle size detection device, through cooperation of the servo motor, the lead screw, the liquid rotating cavity, the piston and the angle detection sensor, the rotation angle of the lead screw can be accurately monitored so as to determine the movement distance of the piston, and quantitative suction and injection of sample liquid are achieved; the problems that during manual transfer, the injection amount is difficult to accurately control, and the liquid level comparison error is large are solved, it is ensured that the sample amount in the cube test tube meets the optimal detection requirement, and the accuracy of the particle size detection result is improved; meanwhile, due to the clamping force design of the rubber ring in the detection opening and the elastic square tube clamp, the stability of the test tube in the detection process is guaranteed, the test tube can be conveniently separated from the clamp when the sealing cover plate is opened, the test tube can be conveniently and manually taken, and the operation process is simplified.

The invention relates to the technical field of well cementation automation and informatization, in particular to a well cementation automation remote monitoring system which comprises a remote well cementation control device, a sensor module and a communication module. Wherein the remote well cementation control device is used for collecting, processing and transmitting data and issuing instructions; the sensor module is used for monitoring various parameters in the operation process of the construction operation equipment in real time; the communication module is used for being connected with on-site construction operation equipment through a communication protocol, and real-time transmission of data and accurate issuing of a control instruction are achieved. According to the method, the safety of operation is remarkably improved, human risks are reduced, the accuracy and reliability of operation are ensured by means of high-precision monitoring and an advanced algorithm, meanwhile, efficient management of multiple well sites is achieved, the operation efficiency is greatly improved, and the operation cost is reduced.

The utility model discloses a kind of reaction kettle fouling cleaning device, device includes reaction kettle body, annular flush coil pipe being internally arranged, coil pipe support pole of supporting coil pipe, and cleaning liquid pipeline connected to discharge pipe.The flush coil pipe bottom is equipped with two groups of oblique spray ports, respectively directional impact kettle wall and stirring mechanism;Cleaning liquid pipeline integration delivery pump, drain pipe and parallel bypass, bypass configuration pressure pulse generator to generate high-frequency pulse jet flow.Through multi-angle spraying and pulse cleaning synergistic effect, the efficient peeling of reaction kettle inner wall and stirring part fouling is realized.The utility model adopts closed-circuit circulation cleaning, without manual entering kettle, cleaning cycle can be effectively shortened and realize water-saving purpose, while guaranteeing that cleaning waste liquid can be recycled, significantly improve the safety, environmental protection and equipment continuous operation efficiency of calcium hydrogen phosphate production.

The utility model relates to the technical field of coolers, in particular to an external oil cooler for a large-pumping-number vacuum pump, which comprises a shell, a cooling cylinder is fixedly connected to the inner wall of the shell, one end of the cooling cylinder is communicated with an oil inlet pipe, and the other end of the cooling cylinder is communicated with an oil outlet pipe. The oil inlet pipe and the oil outlet pipe are both fixedly connected to the inner wall of the shell, the surface of the cooling cylinder is sleeved with a heat dissipation pipe, one end of the heat dissipation pipe is fixedly connected with a water inlet, the other end of the heat dissipation pipe is fixedly connected with a water outlet, and the surface of the oil inlet pipe is fixedly connected with a first electromagnetic valve; and the surface of the oil outlet pipe is fixedly connected with a second electromagnetic valve. The vacuum oil cooling device solves the problems that when a vacuum pump is cooled, a mode of directly cooling a pump shell of the vacuum pump is generally adopted, so that the cooling effect on vacuum oil in the vacuum pump is poor, and the performance of the vacuum oil is reduced and even the service life of the vacuum oil is shortened at high temperature.