Separation device with two-stage gas-liquid mixture and conical spiral fields

A separation device with two-stage gas-liquid mixture and conical spiral fields, comprising a first-stage uniform mixer, a second-stage uniform mixer, a whirlpool-making gas collector, a conical degasser, a two-stage uniform mixing control system, and a gas-liquid separation control system;

• the second-stage uniform mixer being connected with the conical degasser through the whirlpool-making gas collector, so that the separation device with two-stage gas-liquid mixture and conical spiral fields is formed into an inverted U-shaped pipe network;
• the two-stage uniform mixing control system and the gas-liquid separation control system being enable of remotely and automatically controlling a process of a first-stage gas-liquid crushing and uniform mixing, a process of a second-stage gas-liquid crushing and uniform mixing, and a gas-liquid efficient separation in the conical spiral fields, wherein
• the first-stage uniform mixer comprises a first-stage mixing pipe, and an outer micropore ceramic pipe, a middle micropore ceramic pipe, an inner micropore ceramic pipe arranged in the first-stage mixing pipe;
• the first-stage uniform mixer further comprises an upper partition plate, a lower baffle plate, a liquid inlet buffer pipe and a two-phase liquid inlet pipe from top to bottom;
• one end of the first-stage mixing pipe connects the upper partition plate through a first flange, another end of the first-stage mixing pipe connects the lower baffle plate and the liquid inlet buffer pipe through a second flange, so as to be integral with the second-stage mixing pipe;
• and the liquid inlet buffer pipe and the two-phase liquid inlet pipe are connected together by circumferentially welding a lower liquid inlet flange of the liquid inlet buffer pipe and a liquid inlet vertical pipe section of the two-phase liquid inlet pipe;
• a lower end face of the upper partition plate is milled with first annular clamping grooves which are coaxially distributed into three layers in a radial direction of the upper partition plate, and an upper end face of the lower baffle plate is milled with second annular clamping grooves which are coaxially distributed into three layers in a radial direction of the lower baffle plate;
• the first-stage mixing pipe is communicated with the second-stage mixing pipe through inner flow guide holes of the upper partition plate and outer flow guide holes of the upper partition plate;
• the liquid inlet buffer pipe is communicated with the first-stage mixing pipe through a flow guide round hole and flow guide holes of the lower baffle plate;
• the outer micropore ceramic pipe, the middle micropore ceramic pipe and the inner micropore ceramic pipe are coaxially arranged in a layered mode from outside to inside in a radial direction of the first-stage mixing pipe;
• crushing micropores are provided in respective pipe walls of the outer micropore ceramic pipe, the middle micropore ceramic pipe and the inner micropore ceramic pipe in the axial direction of the first-stage mixing pipe at equal intervals;
• each of the crushing micropores comprises a large-cone micropore channel, a cylindrical micropore channel and a small-cone micropore channel;
• annular clamping rings are arranged at two ends of each of the outer micropore ceramic pipe and the inner micropore ceramic pipe;
• and annular clamping hoops are arranged at two ends of the middle micropore ceramic pipe;
• the second-stage uniform mixer comprises a second-stage mixing pipe, and a uniform mixing gear, and an impeller base pipe in the second-stage mixing pipe;
• the second-stage uniform mixer further comprises a pressure relief pipe and a uniform mixing flow pipe symmetrically arranged at a top thereof;
• the pressure relief pipe and the uniform mixing flow pipe are both connected together by circumferentially welding an upper uniform mixing flange;
• the uniform mixing gear comprises a three-stage uniform mixing teeth;
• the uniform mixing gear and the impeller base pipe are fixed in the second-stage mixing pipe by interference fit between the three-stage uniform mixing teeth and the second-stage mixing pipe;
• each stage of the three-stage uniform mixing teeth of the uniform mixing gear comprises two layers of uniform mixing teeth;
• inclination directions of the two layers of uniform mixing teeth are opposite, and a tooth trace of each of uniform mixing teeth is a combined curve;
• the uniform mixing gear is arranged in an annular cavity between the impeller base pipe and the second-stage mixing pipe;
• and a conical boss of the impeller base pipe is provided and configured to axially position the uniform mixing gear and the impeller base pipe;
• the whirlpool-making gas collector is configured to adjust gas-liquid uniform mixing flow obtained after two-stage gas-liquid uniform mixing into hollow-core type high-speed two-phase spiral flow by a variable-pitch whirlpool-making blade and an upper flow guide conical cover;
• the whirlpool-making gas collector comprises a gas collecting pipe, and a whirlpool-making liquid inlet pipe, the whirlpool-making variable-pitch blade and a double-layer conical cover arranged on a lower portion of the gas collecting pipe;
• a wedge-shaped liquid inlet groove is provided at an outlet of the whirlpool-making liquid inlet pipe and is connected with the uniform mixing flow pipe through a third flange;
• the variable-pitch whirlpool-making blade is fixed into a conical separation pipe by interference fit, an outer contour line of the variable-pitch whirlpool-making blade is a variable-pitch spiral line, and a pitch of the outer contour line of the variable-pitch whirlpool-making blade is gradually reduced from top to bottom;
• the double-layer conical cover comprises an upper flow guide conical cover and a lower gas collecting conical cover, which are respectively fixed at a lower part and a bottom of a gas collecting vertical pipe section of the gas collecting pipe by circumferential welding;
• the gas collecting pipe is configured for conveying degassed gas flow;
• and a gas collecting horizontal pipe section of the gas collecting pipe is connected with the gas collecting vertical pipe section through an elbow;
• the conical degasser comprises the conical separation pipe, a flow stabilizing impeller in the conical separation pipe, as well as a liquid outlet buffer pipe and a liquid outlet pipe arranged below the conical separation pipe;
• the conical separation pipe is sequentially provided with a rotational flow forming pipe section, a rotational flow separating pipe section and an axial flow liquid collecting pipe section from top to bottom in an axial direction of the conical separation pipe;
• a wedge-shaped separation groove of the rotational flow forming pipe section and the wedge-shaped liquid inlet groove are matched to achieve communication between the conical separation pipe and the whirlpool-making liquid inlet pipe;
• the axial flow liquid collecting pipe section is configured to form the conical spiral fields, and the flow stabilizing impeller is arranged in a lower and middle part of the axial flow liquid collecting pipe section;
• the gas collecting pipe and the conical separation pipe are connected together by circumferentially welding the gas collecting vertical pipe section and an upper separation flange fixed to the conical separation pipe;
• and a bottom of the conical separation pipe is connected with the liquid outlet buffer pipe through a fourth flange;
• the flow stabilizing impeller comprises flow stabilizing blades and an anti-whirl guide rod, which are configured to adjust degassed liquid flow into liquid flow stably flowing in an axial direction of the conical separation pipe;
• the flow stabilizing blades are straight plate steel sheets uniformly distributed in a circumferential direction of the conical separation pipe;
• the flow stabilizing impeller is fixed in the conical separation pipe by interference fit;
• and the liquid outlet pipe and the liquid outlet buffer pipe are connected together by circumferentially welding a lower separation flange provided on the liquid outlet buffer pipe and a liquid outlet vertical pipe section of the liquid outlet pipe;
• a two-phase liquid inlet manifold of the two-stage uniform mixing control system is sequentially provided with an electromagnetic flowmeter, an emergency shut-off valve and a pneumatic pressure control valve;
• each of the first-stage mixing pipe and the uniform mixing flow pipe is provided with a pressure transmitter;
• and
• a liquid outlet manifold of the gas-liquid separation control system is provided with a pneumatic liquid level control valve and an ultrasonic liquid flowmeter;
• the axial flow liquid collecting pipe section is provided with a liquid level transmitter;
• a gas conveying manifold is provided with a pneumatic pressure difference control valve and an ultrasonic gas flowmeter;
• the liquid outlet manifold and the gas collecting pipe are each provided with another pressure transmitter;
• and the whirlpool-making liquid inlet pipe is provided with two pressure difference transmitters.