8 results about "Dropping funnel" patented technology

The utility model relates to an improved nitrogen distillate absorption device, which comprises a distillation flask, a splash-proof ball tube, a guide tube, a condensing tube and a conical flask with double connecting balls which are connected in sequence, and a dropping funnel is arranged between the distillation flask and the splash-proof ball tube, and is characterized in that the distillation flask is provided with a temperature control device, the guide tube is U-shaped, and the condensing tube is arranged in the conical flask. The conical flask with the double connecting balls is connected to the lower end of the condenser pipe, and the opening of the conical flask with the double connecting balls is S-shaped. The gas absorption and titration device is simple, clear and accurate, and solves the problems that in the prior art, the heating temperature is too high, the temperature control is unstable, and the heating is not uniform; the gas flow speed is too high, so that the absorption is incomplete; the solution absorbed by the conical flask is easy to splash out, and system errors are easy to generate, so that the test is accurate.

The present application relates to a kind of drop tower automatic assembly machine, including ring rail jig device, the periphery of the ring rail jig device is sequentially provided with puncture device feeding device, nut feeding device, sealing ring feeding device, drop tower feeding device, assembly device, visual detection device, sheath feeding device, finished product unloading device and substandard product unloading device, the ring rail jig device includes jig guide rail, suspension module and rotor, the rotor circulates on the jig guide rail, jig is installed on the rotor, puncture device and drop tower can be placed on the jig.Compared with prior art, the present application realizes the full automation of drop tower assembly component feeding and assembly process, greatly improves the assembly efficiency of drop tower assembly, reduces manual participation, reduces the possibility of drop tower assembly being contaminated during assembly process.

This invention discloses a bidirectional coupled pressure-driven injection-production development method, relating to the field of oil production technology. The method includes the following steps: Step 1, selecting a suitable development well area for coordinated injection and production; Step 2, determining the optimal injection volume and injection rate for water well pressure-driven injection; Step 3, determining the optimal injection volume and huff-and-puff design for high-pressure expansion in production wells; Step 4, implementing coordinated injection and production, establishing an effective balanced displacement relationship. This bidirectional coupled pressure-driven injection-production development method, on the one hand, implements slug-type pressure-driven water injection at the injection end to achieve the goals of increased injection, displacement, and wave expansion; simultaneously, on the other hand, it synchronously and synergistically implements high-pressure expansion huff-and-puff with active water at the production end to achieve synergistic expansion, energy replenishment, increased permeability, and improved oil washing efficiency and seepage capacity, preventing water channeling in the pressure drop funnel, and avoiding the surge of pressure-driven injected water along the principal stress direction and the direction of historical displacement strength, as well as fracture channeling.

The invention discloses a floating valve liquid-stopping infusion apparatus easy to exhaust, which comprises an infusion pipeline, one end of the infusion pipeline is provided with a bottle stopper puncture outfit, the infusion pipeline is sequentially provided with a drip chamber, a flow regulator and a liquid medicine filter along the infusion direction, the drip chamber is internally provided with a liquid-stopping floating valve, and the liquid-stopping floating valve is provided with a hollow shell. The bottom of the shell is provided with a liquid stopping diaphragm for sealing a liquid outlet of the drip chamber, the liquid outlet of the drip chamber is provided with a liquid stopping base matched with the liquid stopping diaphragm, and the center of the liquid stopping base is provided with a liquid passing channel communicated with the liquid outlet of the drip chamber; and a breathable water-blocking assembly matched with the liquid-stopping floating valve is arranged on the dripping bucket. The hollow shell is arranged, so that the buoyancy is large enough; by arranging the breathable water-blocking assembly, gas in the drip chamber can be discharged easily, the height of the floating valve can be controlled, and clinical use is facilitated.

The invention provides a preparation method of a low-cost cyclotriphosphazene flame retardant, which comprises the following steps: weighing aniline, dissolving in ethylene glycol dimethyl ether in a beaker A, and weighing triethylamine in a beaker B; weighing phosphonitrilic chloride trimer, and dissolving phosphonitrilic chloride trimer in ethylene glycol dimethyl ether in a beaker C; pouring the solution in the beaker C into a three-necked flask, introducing condensate water, installing a dropping funnel on one neck, sealing the other neck with a glass plug, setting the water bath temperature to be 50-65 DEG C, and starting to heat; the solutions in the beakers A and B are poured into a dropping funnel, dropping is started when the temperature reaches 50-65 DEG C, timing is conducted, heating and stirring are stopped after the reaction is completed, and a reaction device is closed; after the three-necked flask is cooled to the room temperature, a reaction system in the three-necked flask is subjected to reduced-pressure suction filtration, filtrate obtained after suction filtration is dried, impurities are removed, then drying is conducted again, the cyclotriphosphazene flame retardant is obtained, the cyclotriphosphazene flame retardant has good expansion performance and flame retardant performance, and experimental data are provided for further improving the flame retardant performance of a green expansion type flame retardant.

This utility model relates to the field of dripping device technology, specifically to a large-volume constant-rate dripping device. The device includes a dripping funnel, a connecting tube, and a storage tank. The dripping funnel comprises a funnel body and a dripping tube connected to the bottom of the funnel body. The top of the funnel body has an inlet, and the bottom side has a replenishment port. A stopper is provided on the inlet. The replenishment port is connected to an outlet on the lower side of the storage tank via the connecting tube. The storage tank is located above the replenishment port, and the vertical distance H between the bottom of the storage tank and the replenishment port is 1. A knob is provided on the dripping tube. Using this large-volume constant-rate dripping device, in practical applications, it can overcome the shortcomings of current dripping funnels, such as uneven dripping rate and low capacity, thereby improving the uniformity of chemical reactions, ensuring the controllability of the reaction, and enhancing the repeatability, accuracy, and efficiency of experiments.

The utility model belongs to the technical field of conical drip chambers, and particularly relates to a conical drip chamber which comprises a conical drip bottle, a drip chamber upper cover fixedly installed at the top of the conical drip bottle, a flow dividing disc fixedly installed at the bottom of the drip chamber upper cover and located in the conical drip bottle, an air inlet box fixedly installed on the flow dividing disc, and an air inlet seat arranged in the air inlet box. An air inlet pipe fixed to the drip chamber upper cover is fixedly installed in the air inlet seat, an air inlet hole is formed in the air inlet seat and located below the air inlet pipe, and an air filtering film is fixedly installed in the air inlet seat and located at the bottom of the air inlet hole. The round rod is installed in the air inlet pipe in a sliding mode, the top end of the round rod penetrates through the top of the air inlet pipe and the upper cover of the drip chamber and is fixedly provided with an air inlet valve, air can enter an inner cavity of the conical drip bottle by pressing the air inlet valve, impurities in the air can be prevented from entering the conical drip bottle, the liquid inlet amount can be accurately controlled, and the liquid inlet amount can be accurately controlled. Meanwhile, liquid uniform mixing is completed to a certain extent.

The present application relates to the technical field of hydraulic fracturing method, and is an alternating pulse injection method for promoting proppant grouping, which comprises uniformly stirring A agent with proppant and injecting into the formation, and B agent is a slow-release promoter which is injected into the formation together with fracturing fluid in the preflush and mid-top fluid stage. The alternating pulse injection method for promoting proppant grouping can improve single well production by 20% to 90%, eliminates the loss of flow conductivity caused by residue blockage and proppant embedding, thereby reducing the pressure drop funnel effect near the wellbore and improving the fracturing reconstruction effect; and a centimeter-level high-flow channel is established, which greatly improves the flowback rate and flowback speed and reduces the risk of sand plugging during construction.