35results about How to "Avoid premixing" patented technology

The invention provides a multi-material gradient mixed liquid drop formation device based on a micro-fluidic chip. The device comprises an upper layer micro-fluidic chip, a middle layer micro-fluidic chip and a lower layer plate chip. Solution entrances, microchannel networks and solution exits are arranged on the upper layer micro-fluidic chip and the middle layer micro-fluidic chip respectively; the microchannel networks of the upper layer micro-fluidic chip and the middle layer micro-fluidic chip are composed of concentric annular channels and radial subchannels with same quantity which are connected in an alternatively distributed mode respectively; the solution entrances of the upper layer micro-fluidic chip and the middle layer micro-fluidic chip are communicated with the first concentric annular channel and the first set of radial subchannels in same-layer chip microchannel networks respectively; the solution exits of the upper layer micro-fluidic chip and the middle layer micro-fluidic chip are communicated with the last set of radial subchannels in the same-layer chip microchannel networks respectively, and the solution exits of the upper layer micro-fluidic chip is communicated with the solution exits of the middle layer micro-fluidic chip and corresponds to the solution exits of the middle layer micro-fluidic chip one to one.

A storage-type precise quantitative injection system for injection of an underground oil or gas well operating agent and an injection method thereof. The injection system comprises an injection tube (3-2) and overground pressurizing equipment. The injection tube is provided with one or more sets of injection units therein. Each set of the injection units comprises an operating agent container (3-7) having a variable volume. The overground pressurizing equipment is configured to generate a pressure acting on the operating agent container (3-7) having the variable volume so as to expel an operating agent (3-8). The injection method adopts the storage-type precise quantitative injection system using the underground oil or gas well operating agent (3-8), and injects a fixed amount of the operating agent (3-8) into a target location in the underground well. By injecting in advance the fixed amount of the operating agent into the operating agent container, the injection system can inject an accurate and fixed amount of the operating agent and ensure accuracy of an injection amount of the operating agent. The injection method can inject an accurate amount of the operating agent into the target location, providing accuracy of the injection amount and accuracy of the injection location and ensuring a favorable injection effect.

The invention discloses an angle rotary connector capable of entering and exiting the same channel by a plurality of channels. The channels are arranged at the outer end of a lower shell body; 4-32 channels are arranged; each channel is internally provided with an annular sealing part, a first O-shaped ring, a spring cushion and a spring in sequence; a rotary shaft is arranged in an upper shell body; a star-shaped sealing ring is arranged under a first bearing between the rotary shaft and the lower shell body; a common channel is arranged on one side of the upper shell body; an annular groove is formed in the horizontal plane of the lower part of the rotary shaft; the annular groove corresponds to the common channel in the vertical direction; a second O-shaped ring is arranged on one side of the annular groove and a third O-shaped ring is arranged on the other side of the annular groove; the annular groove of the rotary shaft is internally provided with a rotary shaft channel and the rotary shaft channel corresponds to the channel; a star-shaped ring is arranged between the rotary shaft above a second bearing and the shell body; a key slot is formed in the outer end of the rotary shaft; and the upper shell body and the lower shell body are fixedly connected through a bolt. The angle rotary connector is simple in structure, is supported by the double bearings and is flexible to rotate and the torque is alleviated. The sealing effect is ensured and the service life is prolonged.

The invention discloses a movable natural gas hydrate evaluation apparatus. The apparatus comprises a temperature field device, a natural gas injection pipeline, a natural gas outflow pipeline and a component water injection pipeline; the temperature field device comprises a temperature field tank and a refrigerating unit; an internal coil pipe is arranged in the temperature field tank; the temperature field tank is respectively connected with the refrigerating unit and an acquisition processor; the sidewall of the temperature field tank is provided with a visual window; the natural gas injection pipeline is connected with the internal coil pipe; the natural gas outflow pipeline is connected with the internal coil pipe; and the water injection pipeline is connected with the natural gas injection pipeline. The movable natural gas hydrate evaluation apparatus can be used to evaluate and research hydrate formation conditions and additives in the exploitation field of natural gas, and has the advantages of convenient transportation, convenient operation and strong applicability.

The automatic circulating liquid adding system disclosed by the present invention comprises a liquid storage tank, a heat exchanger, a circulation pump, a liquid consumption branch and a controller, the liquid inlet of the circulation pump is connected to the liquid outlet of the liquid storage tank, and the liquid outlet of the circulation pump The port is connected to the inlet of the heat exchanger, and the outlet of the heat exchanger is connected to the circulating liquid inlet of the liquid storage tank through a pipeline. The liquid storage tank is equipped with a temperature sensor A, a liquid level sensor and a liquid level switch, and the liquid consumption branch is connected to the heat exchanger On the connecting pipe between the outlet of the heat exchanger and the circulating liquid inlet of the liquid storage tank, the temperature sensor B is installed on the connecting pipe between the outlet of the heat exchanger and the liquid consumption branch, and the liquid consumption branch and the circulating liquid inlet of the liquid storage tank A temperature sensor C, a pressure sensor and a pressure regulating valve are arranged on the connecting pipeline between them. The invention has a high degree of automation, and can improve product quality and efficiency.

The invention discloses a treatment method for waste lithium iron phosphate. The waste lithium iron phosphate material is pretreated, and the pretreated material is added to a phosphoric acid solution to react and then filtered to obtain a first filtrate and a first filter residue; the first filtrate is added to a sulfide reaction, and then filtered to obtain a second filtrate and a second filter residue; Add iron powder to the second filtrate, remove iron after stirring and reacting, add battery-grade lithium carbonate to the obtained iron-removing material, stir and react until no bubbles are generated, and obtain the reaction material; add the reaction material to a water-soluble organic carbon source, stir to disperse and dissolve , the obtained material is spray-dried in a spray dryer to obtain a dry material; the dried material is put into a roller furnace for calcination, and after crushing, mixing, screening and iron removal, vacuum packaging is obtained. The invention can realize the resource utilization of waste lithium iron phosphate, realize high-end circulation, and at the same time, have a high recovery rate of each element, produce less waste water, and obtain excellent performance of the obtained lithium iron phosphate.

A laser-mechanical rock breaking test device is mainly composed of a rotation system, a hydraulic control system, an optical path and a gas path system, a test and data processing system, and a support system; the rotation system is mainly composed of a motor, a reducer, a drill pipe, and a drill bit. The hydraulic control system is mainly composed of a hydraulic cylinder and a telescopic rod. The optical path and the gas path system are mainly composed of a laser head, a laser head angle adjuster, an air inlet disc, and a phosgene mixing cylinder. The laser head angle adjuster can adjust the emission angle of the laser. Adjustment, the laser and gas are mixed in the phosgene mixing cylinder, and finally act on the bottom of the drill bit. The test and data processing system is mainly composed of a torque sensor, a spoke pressure sensor, and a displacement sensor. The support system is mainly composed of a base and a main column. The laser-mechanical rock-breaking test device of the present invention can carry out research on the laser-mechanical rock-breaking mechanism, efficient synergistic parameter matching, etc., and is of great significance for promoting the development of the laser-mechanical rock-breaking technology.