CN203724816U - Gas-liquid separator - Google Patents

Abstract

The utility model discloses a gas-liquid separator which comprises an outer shell, an inner shell, a spiral plate, an exhaust pipe, a liquid phase guide plate, a gas phase baffle plate, a mesh mist eliminator, a liquid phase outlet baffle plate, a liquid inlet and a liquid outlet, wherein the outer shell, the inner shell, the spiral plate, the exhaust pipe and the liquid phase guide plate are concentrically arranged; the spiral plate is arranged inside the inner shell; the exhaust pipe and the liquid phase guide plate are arranged at an outlet in the top of the inner shell; the gas phase baffle plate is arranged at the top of the exhaust pipe; the mesh mist eliminator is arranged above the gas phase guide pipe; the liquid inlet penetrates through the outer shell and is communicated with the inner shell along the tangent direction; the liquid outlet is arranged above the liquid inlet and the liquid outlet and the liquid inlet are in a vertical plane; the liquid phase outlet baffle plate is arranged below the liquid outlet. The gas-liquid separator disclosed by the utility model has the advantages of simple structure, high separation efficiency, reliability in operation, small volume and convenience in installation.

Description

A kind of gas-liquid separator

Technical field

The utility model relates to a kind of gas-liquid separation equipment, relates in particular to a kind of gas-liquid separator for installing in fluid flow metering system.

Background technology

In fluid flow metering system, while containing gas in liquid medium, can affect measuring accuracy and the stability of mass flowmenter, be necessary to arrange the equipment of cooling down before flowmeter.The general gas-removing filter that adopts in engineering, eliminates a small amount of bubble contained in liquid medium at present, and when in medium, gas content is more, this equipment cannot effectively be eliminated gas.The domestic patented technology product for gas-liquid two-phase separation has nearly ten thousand kinds at present, but be used for droplet in divided gas flow and a small amount of bubble in liquid, and adopt gravity settling separation for the liquid fluid that contains a large amount of bubbles more, this separation equipment stock size is larger, and separative efficiency is low, be not suitable for installing in fluid flow metering system.

Utility model content

Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provide a kind of gas-liquid separation effect good, be easily installed in the gas-liquid separator in fluid flow metering system.

Technical scheme: for achieving the above object, gas-liquid separator of the present utility model comprises shell body, inner housing, spiral plate, blast pipe, liquid phase deflector, gas phase flow-stopping plate, mesh mist eliminator, liquid-phase outlet baffle plate, inlet and liquid outlet, wherein, described shell body, inner housing, spiral plate and blast pipe arrange with one heart; Described inner housing is arranged at the inside of shell body; Described spiral plate is arranged at the inside of inner housing; Described blast pipe is arranged at the exit at inner housing top and stretches into inner housing, and described liquid phase deflector is arranged at the outer wall of blast pipe; Described gas phase flow-stopping plate is arranged at the top of described blast pipe; Described mesh mist eliminator is arranged at the top of gas phase mozzle; Described inlet also tangentially communicates with inner housing through shell body; Described liquid outlet is arranged at the top of described inlet; Described liquid-phase outlet baffle plate is arranged between the shell body and inner housing of liquid outlet side, the top of liquid-phase outlet baffle plate and the tangential of liquid outlet, and liquid-phase outlet baffle plate makes cavity and the liquid outlet between shell body and inner housing bottom form a passage; Described shell body arranged outside has interface of the level gauge; The top of described shell body is provided with exhaust outlet, and the bottom of described shell body is provided with leakage fluid dram.

Wherein, the diameter of inlet and the equal diameters of liquid outlet, the size of diameter depends on the flow of fluid.The diameter of exhaust outlet is relevant with the gas phase content in fluid, when gas phase content is larger in fluid, should adopt larger diameter of outlet, but excessive diameter of outlet can cause liquid level to change, is difficult to control.Conventionally, the diameter ratio of inlet diameter and exhaust outlet is 3～8.Leakage fluid dram diameter is relevant to equipment dischargeable capacity, and conventionally, the ratio of inlet diameter and leakage fluid dram diameter is 3～8.

Wherein, the diameter of described shell body is 1.5～2.5 with the diameter of inner housing ratio, is preferably 1.5, ratio is crossed conference and is caused equipment resistance excessive, reduces the disposal ability of separator, and can cause the liquid phase fraction of exhaust outlet to raise, ratio is too small, can cause the gas phase fraction of liquid outlet to raise.The height ratio of the height of shell body and inner housing is 1.5～2.0, is preferably 2, and shell body height is larger, more favourable to gas-liquid separation, and shell body height is generally 1.6～2.5m, over very little to the influential effect of gas-liquid separation after 2.5m; Excessive size will make equipment be difficult for installing, and increase manufacturing cost.When gas phase content is larger in fluid, should adopt less inner housing height, too small inner housing height can cause the gas phase fraction of liquid outlet to raise.

The diameter wallpaper of described inner housing diameter and blast pipe is 1.5～2.5, is preferably 2.Blast pipe diameter is relevant with the gas phase content in fluid, gas-liquid separation effect is had to certain influence, when gas phase content is larger in fluid, should adopt larger diameter of outlet, blast pipe diameter is selected the excessive or too small back-mixing that all can cause gas-liquid two-phase in separator.

The barrel top of described inner housing offers square hole, and the ratio of the Gao Yukuan of described square hole is 4～8, and the size of square hole, by directly affecting the velocity of discharge and the direction of inner housing exit liquid phase, can weaken inner housing exit gas-liquid two-phase back-mixing effectively.

Described spiral plate is fixed on the spiral plate axis that is arranged at shell body and inner housing center, and the center of gas phase flow-stopping plate is fixed in described spiral plate axis upper end, and the center of inner housing base plate is fixed in lower end.The diameter of spiral plate axis is relevant with spiral plate size and Mechanical Structure Strength, and too small middle shaft diameter will cause spiral plate to be difficult to processing, and too small middle shaft diameter will take the effective circulation passage of fluid in inner housing, and increasing device resistance, is generally 20～60mm.

The number of turns of spiral plate is more, and gas-liquid separation effect is better, but the number of turns is too much understood increasing device resistance.The distance between plates of spiral plate is generally 50～150mm, and distance between plates is crossed conference increases device height, too small meeting increasing device resistance.

The diameter of described liquid phase deflector is 1.2～1.5 with the diameter of inner housing ratio, is preferably 1.25.When gas phase content is larger in fluid, should adopt less liquid phase deflector diameter, suitable liquid phase deflector diameter can effectively weaken the back-mixing of gas-liquid two-phase in separator.

The both sides of described gas phase flow-stopping plate are provided with jagged, and gas phase mozzle is secured by bolts in the gripper shoe that is welded on shell body inwall.Distance between gas phase deflector and mesh mist eliminator is generally 200～300mm, and both increase the height of equipment apart from crossing conference, and too small meeting causes the liquid phase fraction of exhaust outlet to raise.

Preferably, described interface of the level gauge comprises two, and one is arranged between mesh mist eliminator and gas phase flow-stopping plate, and another interface of the level gauge is arranged between spiral plate and liquid outlet.

Described shell body bottom and top are sealed by ellipse head respectively.

The bottom of described shell is provided with supporting leg.

Gas-liquid two-phase fluid tangentially enters inner housing by inlet, flows from bottom to top, and under the guide functions of spiral plate, forms eddy flow; By the centrifugal force producing in eddy flow process, the flow direction inner housing wall that density is larger, gas is formed centrally stable gaseous core in inner casing, along spiral plate axis, upwards flows, and gas-liquid two-phase is able to separation.

Beneficial effect: compared with prior art, gas-liquid separator tool of the present utility model has the following advantages:

(1) by blast pipe and gas phase flow-stopping plate and liquid phase deflector being set in inner housing outlet, can avoid gas-liquid two-phase at the back-mixing in exit, effectively guaranteed the separative efficiency of gas-liquid two-phase, the liquid flowing out from inner housing is under Action of Gravity Field, along inner casing and the formed cavity of shell, flow downward, finally by the outlet being located on shell body wall, flowed out; (2) by liquid phase deflector is set, from inner housing effluent air along blast pipe, upwards flow, after liquid phase deflector baffling, make contained dropping on gas phase deflector and assemble with shell wall place compared with dense fog in gas phase, and under Action of Gravity Field, import liquid phase downwards; Remove the gas phase of larger droplet, continue upwards to flow, through being placed in the screen type demister at separator top, further remove fine droplet contained in gas phase, finally by separator top vent drain separator; (3) at inner housing top, set square hole can make liquid radially discharge, and can more effectively reduce the mixing of gas-liquid two-phase, and has also reduced the drag overall of equipment; (4) flowing velocity vertically when the setting of liquid phase deflector can reduce liquid and flows out inner housing, further avoids the back-mixing of separated gas-liquid two-phase; (5) structure of gas liquid separator of the present utility model is simple, separative efficiency is high, reliable, volume is small and exquisite, is convenient to be arranged in fluid flow metering system.

Accompanying drawing explanation

Fig. 1 is top view of the present utility model;

Fig. 2 is that the utility model is along the cutaway view of A-A face in Fig. 1;

Fig. 3 is that the utility model is along the cutaway view of B-B face in Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 1 to 3, a kind of gas-liquid separator, main body is shell body 1, the diameter of shell body 1 is 406mm, is highly 1.80m; Ellipse head 14 sealings that shell body 1 is 406mm by diameter respectively up and down.Shell body 1 inner concentric arranges that a diameter is the inner housing 2 of 210mm, and inner housing 2 is highly 1.185m, and inner housing 2 bottoms and shell body 1 bottom are contour, and the steel plate that bottom is 210mm by diameter seals; On inner housing 2 side barrels, have size (height is multiplied by wide) for the square hole 16 of 150mm * 25mm.In inner housing 2 center arrangement, have spiral plate 3, spiral plate 3 is fixed on the spiral plate axis 15 that diameter is 38mm, and spiral plate 3 overall lengths are 1500mm, and distance between plates is equidistant 50mm, and number of total coils is N13, and spiral plate 3 bottoms are 550mm apart from inner housing distance from bottom; It is 114mm blast pipe 4 that inner housing 2 outlet concentrics arrange diameter, and blast pipe 4 overall lengths are 400mm, and the length that stretches into inner housing 2 is 129mm, and blast pipe 4 is fixed on the inner side of spiral plate 3; Apart from inner housing 37mm At The Height, the annular liquid phase deflector 5 that external diameter is 275mm is set, liquid phase deflector 5 is fixed on the outer wall of blast pipe 4; Apart from blast pipe 4 top exit 49mm At The Heights, gas phase flow-stopping plate 6 is set, the diameter of gas phase flow-stopping plate 6 is slightly less than shell body internal diameter, and in both sides, leaving the breach that arc action degree is 75mm, gas phase flow-stopping plate 6 fixes by bolt and the gripper shoe that is welded on shell body 1 inwall; Spiral plate axis 15 upper ends are fixed on gas phase flow-stopping plate 6 centers, and lower end is fixed on the center of inner housing 2 base plates; Apart from gas phase flow-stopping plate 185mm At The Height, diameter is set and is slightly less than shell body internal diameter, thickness is 50mm mesh mist eliminator 7, and mesh mist eliminator 7 is fixed between upper and lower 2 layers of demister gripper shoe, upper strata gripper shoe and 14 welding of top ellipse head; Lower layer support plate and shell body 1 inwall welding; End socket 14 centers in top arrange the exhaust outlet 12 that diameter is 25mm; Ellipse head 14 centers, bottom arrange the leakage fluid dram 13 that diameter is 25mm.Diameter is that the inlet 9 of 100mm passes shell body 1, tangentially joins with inner housing 2, and inlet 9 center lines are 150mm apart from shell body 1 bottom level; Diameter is that the liquid outlet 10 of 100mm passes shell body 1, and with inlet 9 collinear layout in top view, liquid outlet 10 center lines are 450mm apart from shell body 1 bottom level; Inlet 9 is 698mm with liquid outlet 10 flange face spacing; In close liquid outlet 10 1 sides, shell body 1 and the middle liquid-phase outlet baffle plate 8 that is provided with of inner housing 2, the tangential of the top of liquid-phase outlet baffle plate 8 and liquid outlet 10, liquid-phase outlet baffle plate 8 is welded as a whole with inner housing 2, and bottom and shell body 1 are welded and fixed, liquid-phase outlet baffle plate 8 makes cavity and the liquid outlet 10 between shell body 1 and inner housing 2 bottoms form a passage.Shell body 1 is along 4 supporting legs 16 of outer wall equidistant placement, and supporting leg bottom surface is 275mm apart from shell body 1 bottom level; 11,2 interface of the level gauge 11 spacing of 2 interface of the level gauge of shell body 1 arranged outside are 1200mm, and interface of the level gauge 11 center lines in bottom are 525mm apart from shell body 1 bottom level.

Gas-liquid two-phase fluid tangentially enters inner housing 2 by inlet, flows from bottom to top, and under the guide functions of spiral plate 3, forms eddy flow; By the centrifugal force producing in eddy flow process, flow direction inner housing 2 walls that density is larger, gas is formed centrally stable gaseous core in inner housing 2, along spiral plate axis 15, upwards flows, and gas-liquid two-phase is able to separation.Separative efficiency now depends on the spacing of spiral plate 3 and the number of turns of spiral plate 3, when medium air content is higher, should suitably increase the distance between plates of spiral plate and the number of turns of spiral plate.

By in inner housing 2 outlets, blast pipe 4 and liquid phase deflector 5 being set, can effectively avoid gas-liquid two-phase in the generation of exit air-teturning mixed phenomenon.The liquid flowing out from inner housing 2, under Action of Gravity Field, flows downward along formed cavity between inner casing and shell, after liquid-phase outlet baffle plate 8 bafflings, by the liquid outlet 10 being located on shell body wall, is flowed out.At inner housing 2 top institute opening square holes 16, can make liquid radially discharge, can more effectively reduce the mixing of gas-liquid two-phase, and also reduce the drag overall of equipment.The diameter of liquid phase deflector 5 is between shell body 1 diameter and inner housing 2 diameters, and the flowing velocity that the setting of this liquid phase deflector 5 can reduce liquid while flowing out inner housing 2 vertically, further avoids the back-mixing of separated gas-liquid two-phase.When gas phase content is higher in charging medium, in the liquid phase of discharging in inner housing outlet, can contain a certain amount of gas phase, this part gas phase can flow downward in process along formed cavity between inner housing and shell body, is able to further separation under Action of Gravity Field.

From inner housing 2 effluent airs along blast pipe 4, upwards flow, after liquid phase deflector baffling, make containedly in gas phase compared with dense fog, to drop in liquid phase flow-stopping plate 5 and shell wall place assembles, and under Action of Gravity Field, import liquid phase downwards; Remove the gas phase of larger droplet, continue upwards to flow, through being placed in the mesh mist eliminator 7 at separator top, further remove fine droplet contained in gas phase, last exhaust outlet 12 drain separators by separator top.

The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (10)

1. a gas-liquid separator, it is characterized in that, comprise shell body (1), inner housing (2), spiral plate (3), blast pipe (4), liquid phase deflector (5), gas phase flow-stopping plate (6), mesh mist eliminator (7), liquid-phase outlet baffle plate (8), inlet (9) and liquid outlet (10), wherein, described shell body (1), inner housing (2), spiral plate (3) and blast pipe (4) arrange with one heart; Described inner housing (2) is arranged at the inside of shell body (1); Described spiral plate (3) is arranged at the inside of inner housing (2); Described blast pipe (4) is arranged at the exit at inner housing (2) top and stretches into inner housing, and described liquid phase deflector (5) is enclosed within on blast pipe (4); Described gas phase flow-stopping plate (6) is arranged at the top of blast pipe (4); Described mesh mist eliminator (7) is arranged at the top of gas phase mozzle (6); Described inlet (9) passes shell body (1) and communicates with inner housing (2); Described liquid outlet (10) is arranged at the top of inlet (9); Described liquid-phase outlet baffle plate (8) is arranged between the shell body (1) and inner housing (2) that liquid outlet (10) locates, the tangential of the top of liquid-phase outlet baffle plate (8) and liquid outlet (10), liquid-phase outlet baffle plate (8) makes cavity and the liquid outlet between shell body (1) and inner housing (2) bottom form a passage; Described shell body (1) arranged outside has interface of the level gauge (11); The top of described shell body (1) is provided with exhaust outlet (12), and the bottom of described shell body (1) is provided with leakage fluid dram (13).

2. gas-liquid separator according to claim 1, it is characterized in that, the diameter ratio of the diameter of described shell body (1) and inner housing (2) is 1.5～2.5, and the height ratio of the height of shell body (1) and inner housing (2) is 1.5～2.0.

3. gas-liquid separator according to claim 1, is characterized in that, the diameter ratio of the diameter of described inner housing (2) and blast pipe (4) is 1.5～2.5.

4. gas-liquid separator according to claim 1, is characterized in that, the barrel top of described inner housing (2) offers square hole (16), and the ratio of the Gao Yukuan of described square hole is 4～8.

5. gas-liquid separator according to claim 1, it is characterized in that, described spiral plate (3) is fixed on the spiral plate axis (15) that is arranged at shell body (1) and inner housing (2) center, the center of gas phase flow-stopping plate (6) is fixed in described spiral plate axis (15) upper end, and the center of inner housing (2) base plate is fixed in lower end.

6. gas-liquid separator according to claim 1, is characterized in that, the diameter ratio of the diameter of described liquid phase deflector (5) and inner housing (2) is 1.2～1.5.

7. gas-liquid separator according to claim 1, is characterized in that, the both sides of described gas phase flow-stopping plate (6) are provided with jagged, and gas phase mozzle (6) is secured by bolts in the gripper shoe that is welded on shell body (1) inwall.

8. gas-liquid separator according to claim 1, it is characterized in that, described interface of the level gauge (11) comprises 2, one is arranged between mesh mist eliminator (7) and gas phase flow-stopping plate (6), and another interface of the level gauge (11) is arranged between spiral plate (3) and liquid outlet (10).

9. gas-liquid separator according to claim 1, is characterized in that, described shell body (1) bottom and top are sealed by ellipse head (14) respectively.

10. according to the gas-liquid separator described in claim 1 to 9 any one, it is characterized in that, described shell body (1) bottom is provided with supporting leg (16).