CN109513237B - Three-cavity type air eliminator - Google Patents
Three-cavity type air eliminator Download PDFInfo
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- CN109513237B CN109513237B CN201710838799.5A CN201710838799A CN109513237B CN 109513237 B CN109513237 B CN 109513237B CN 201710838799 A CN201710838799 A CN 201710838799A CN 109513237 B CN109513237 B CN 109513237B
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- air eliminator
- gas
- overflow plate
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- space
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- 239000007791 liquid phase Substances 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000012071 phase Substances 0.000 claims abstract description 30
- 230000001174 ascending effect Effects 0.000 claims abstract description 20
- 230000000630 rising effect Effects 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0063—Regulation, control including valves and floats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0073—Degasification of liquids by a method not covered by groups B01D19/0005 - B01D19/0042
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a three-cavity type air eliminator in the field of oil-gas separation, wherein the air eliminator is a vertical cylinder with end sockets at two ends, an arc line overflow plate and a straight line overflow plate are arranged inside the air eliminator cylinder, and a segmental bottom plate is arranged at the bottoms of the arc line overflow plate and the straight line overflow plate inside the air eliminator and serves as a bottom plate of a gas-liquid rising space and a liquid-phase buffering dead zone; the gas phase outlet is arranged on one side of the side surface of the top of the cylinder body of the air eliminator, which is close to the gas-liquid rising space, and a ball float valve is arranged on the gas phase outlet; the liquid phase outlet is arranged on the side surface of the bottom of the cylinder body of the air eliminator; the inlet of the air eliminator is arranged on the side wall of the cylinder body of the air eliminator and is positioned at the bottom of the gas-liquid ascending space. The three-cavity type air eliminator provided by the invention eliminates small bubbles or small gas groups contained in a liquid phase by adopting a multi-overflow mode, has unique advantages for a viscous liquid phase medium, and has a simple internal structure and a good separation effect.
Description
Technical Field
The invention belongs to the technical field of oil-gas separation and flow guarantee, and particularly relates to a degasser.
Background
The mass flow of oil needs to be measured in the oil product metering and transferring link in the oil and gas industry chain, and because huge economic benefits are involved in the oil product transferring process in pipe transportation, the method puts a very high requirement on the metering precision of a flowmeter. The mass flow rate is measured by two methods, one method is that the volume flow rate is measured firstly, and then the volume flow rate is converted into the mass flow rate according to the density of the fluid; the other is to measure the mass flow directly. The fluid density is constantly changed under the influence of the fluid density and the temperature, the parameter errors are superposed when the volume flow is converted into the mass flow, and the mass flow meter which directly measures the mass flow can simultaneously measure the fluid density with high precision, thereby being widely applied.
The mass flowmeter measures the mass of the fluid mainly by utilizing the principle that the fluid generates Coriolis force on the wall of the elbow when flowing through the elbow, so that the mass flowmeter is highly sensitive to small bubbles or small gas groups contained in the liquid phase. Not only can the flow meter measure error (because the quantity of the bubbles contained in the flow meter is not known, the distribution is not uniform and is not continuous, so that the error is difficult to be counteracted by other methods), but also the air mass accumulated in the flow meter can cause uneven abrasion impact of the liquid phase on the inner wall surface of the flow meter, thereby causing the flow meter to be damaged.
The measured liquid phase must be separated and removed before entering the mass flow meter, and the air eliminator is used as a flow guarantee device in front of the mass flow meter, is mainly used for separating small bubbles or air masses separated out from the liquid phase due to static head reduction or along-the-way heat absorption temperature rise, and has important significance in developing a high-performance air eliminator. Chinese patent CN202674694U discloses a degasifier for crude oil pipeline, which only uses the overflow effect of a primary partition plate to eliminate small bubbles in oil products, and has poor degassing effect and easy carrying of small bubbles.
Disclosure of Invention
The invention aims to provide a three-cavity type air eliminator which has the characteristics of simple structure and good separation effect. The technical problems that in the prior art, the air eliminator is simple in air elimination mode for eliminating bubbles, poor in air elimination effect and easy to carry small bubbles are solved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a three-cavity type air eliminator is a vertical cylinder body with end sockets at two ends, an arc line overflow plate and a straight line overflow plate are arranged inside the air eliminator cylinder body, and the arc line overflow plate and the straight line overflow plate divide the inner space of the air eliminator into a gas-liquid ascending space, a liquid phase buffer dead zone and a liquid phase space; the round bottom plate is arranged at the bottom of an arc overflow plate and a straight overflow plate in the air eliminator and serves as a bottom plate of a gas-liquid rising space and a liquid-phase buffer dead zone; the gas phase outlet is arranged on one side of the side surface of the top of the cylinder body of the air eliminator, which is close to the gas-liquid rising space, and a ball float valve is arranged on the gas phase outlet; the liquid phase outlet is arranged on the side surface of the bottom of the cylinder body of the air eliminator and is communicated with the liquid phase space; the inlet of the air eliminator is arranged on the side wall of the cylinder body of the air eliminator and is positioned at the bottom of the gas-liquid ascending space.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the air eliminator is a vertical cylinder with round end sockets at two ends.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the arc line overflow plate and the straight line overflow plate divide the inner space of the air eliminator into a gas-liquid ascending space, a liquid phase buffer dead zone and a liquid phase space.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the diameter of the arc line overflow plate is 2-3 times of the diameter of the cylinder of the air eliminator.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the top of the arc line overflow plate is 0.2-0.3 times of the diameter of the cylinder of the air eliminator higher than that of the straight line overflow plate.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the width of the linear overflow plate is the same as the diameter of the cylinder body of the air eliminator, and the bottom of the linear overflow plate coincides with the linear edge of the circular notch bottom plate.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the distance between the bottom plate of the circular segment and the tangent line of the end socket at the bottom of the cylinder body of the air eliminator is about 0.6-0.8 times of the diameter of the cylinder body of the air eliminator.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the round bottom plate is a semicircular bottom plate, has the same diameter as the cylinder of the air eliminator, occupies half of the sectional area of the cylinder of the air eliminator, is arranged at the lower part of the cylinder of the air eliminator, is used as a bottom plate of a liquid phase rising space and a liquid phase buffer dead zone, and is partially arranged below the liquid phase rising space and the liquid phase buffer dead zone.
The invention relates to a three-cavity air eliminator, which is further characterized in that: the liquid phase outlet is arranged on the side surface of the bottom of the cylinder body of the gas eliminator, and the circumferential angle of the gas phase outlet on the cylinder body of the gas eliminator is 180 degrees; the air eliminator inlet is arranged on the side wall of the air eliminator cylinder body, is positioned at the bottom of the air-liquid ascending space, and has the same circumferential angle as the air phase outlet on the air eliminator cylinder body.
The width of the straight overflow plate is the same as the diameter of the cylinder body of the air eliminator, and the bottom of the straight overflow plate coincides with the straight edge of the circular notch bottom plate. The pitch arc overflow plate is installed in the space that sharp overflow plate and semicircle bottom plate enclose, and the bottom of pitch arc overflow plate is located the round and lacks the bottom plate, and two sides of pitch arc overflow plate and two sides coincidence of sharp overflow plate, one section distance in sharp overflow plate top are higher than at the top.
The space enclosed by the arc line overflow plate, the straight line overflow plate and the round bottom plate is a liquid phase buffer dead zone; the space enclosed by the arc line overflow plate, the air eliminator cylinder and the circular segment bottom plate is a gas-liquid ascending space. The arc surface of pitch arc overflow plate has lengthened the length at top overflow border, has improved the gas-liquid separation effect of overflow in-process, and 2 ~ 3 times's deaerator barrel diameter is got to the diameter of pitch arc overflow plate. The height difference value that pitch arc overflow plate top exceeds straight line overflow plate should not be too big (the overflow process is approximate aperture efflux, and height difference value is big more, and the drop point is far away more from the overflow limit), should guarantee that the most liquid phase that the pitch arc overflow plate overflow got off gets into liquid phase buffering dead zone in order to carry out the second overflow separation of straight line overflow plate, should not cross the overflow separation effect who prevents to influence pitch arc overflow plate excessively simultaneously, consequently it is comparatively suitable to get 60% ~ 70%. To ensure the overflow effect, the pipe flow partition in the gas-liquid ascending channel should be located in the laminar flow range.
The gas-liquid interface is positioned in the space on the other side enclosed by the straight overflow plate and the air eliminator cylinder, the gas phase space is arranged above the gas-liquid interface, and the liquid phase space is arranged below the gas-liquid interface. The floating ball valve is mature equipment, the floating ball is positioned on a gas-liquid interface, and gas phase is controlled to enter the emptying system through a gas phase outlet according to the gas phase aggregation amount of a gas phase space; and the pure liquid phase after the gas elimination is sent to a downstream mass flow meter through a liquid phase outlet for metering operation.
The three-cavity air eliminator eliminates small bubbles or small gas groups contained in a liquid phase by adopting a multi-overflow mode, has unique advantages for viscous liquid-phase media (the separation of the small bubbles of the viscous media is mainly realized by overflow separation), and has simple internal structure and good separation effect.
The present invention will be described in further detail with reference to the following drawings and detailed description, but the present invention is not limited to the scope of the present invention.
Drawings
FIG. 1 is a schematic perspective view of a three-chamber type air eliminator according to the present invention;
FIG. 2 is a front view of a three-chamber air eliminator of the present invention;
3 FIG. 3 3 3 is 3 a 3 schematic 3 view 3 of 3 a 3 cross 3- 3 sectional 3 view 3 of 3 a 3 three 3- 3 chamber 3 type 3 air 3 eliminator 3 A 3- 3 A 3 according 3 to 3 the 3 present 3 invention 3. 3
Wherein the reference symbols shown are: 1-a degasser inlet, 2-a liquid phase outlet, 3-a gas phase outlet, 4-a degasser barrel, 5-a gas-liquid ascending space, 6-an arc overflow plate, 7-a liquid phase buffer dead zone, 8-a linear overflow plate, 9-a liquid phase space, 10-a ball float valve, 11-a gas phase space and 12-a semicircular bottom plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
referring to the attached drawings 1-3, the three-cavity type air eliminator is a vertical cylinder structure with circular end sockets at two ends, and an arc line overflow plate 6 and a straight line overflow plate 8 are arranged inside a cylinder 4 of the air eliminator to divide the internal space of the air eliminator into a gas-liquid ascending space 5, a liquid-phase buffer dead zone 7 and a liquid-phase space 9; the semicircular bottom plate 12 is arranged at the bottoms of the arc overflow plate 6 and the straight overflow plate 8 in the air eliminator as the bottom plate of the gas-liquid ascending space 5 and the liquid-phase buffer dead zone 7; the gas phase outlet 3 is arranged on one side of the side surface of the top of the cylinder body 4 of the air eliminator, which is close to the gas-liquid ascending space 5, and a ball float valve 10 is arranged on the gas phase outlet; the liquid phase outlet 2 is arranged on the side surface of the bottom of the gas eliminator cylinder 4 and has 180-degree difference with the circumferential angle of the gas phase outlet 3 on the gas eliminator cylinder 4; the air eliminator inlet 1 is arranged on the side wall of the air eliminator cylinder body 4, is positioned at the bottom of the air-liquid ascending space 5, and has the same circumferential angle as the air phase outlet 3 on the air eliminator cylinder body 4.
The diameter of the semicircular bottom plate 12 is the same as that of the air eliminator cylinder 4, occupies half of the sectional area of the air eliminator cylinder 4, is arranged at the lower part of the air eliminator cylinder 4 and is used for a liquid phase ascending space 5 and a bottom plate of a liquid phase buffer dead zone 7, and a part of a liquid phase space 9 is arranged below the bottom plate. The width of the linear overflow plate 8 is the same as the diameter of the cylinder 4 of the air eliminator, and the bottom of the linear overflow plate coincides with the linear edge of the semicircular bottom plate 12. The space enclosed by the straight overflow plate 8 and the semi-circular bottom plate 12 is the gas-liquid ascending space 5 and the liquid phase buffer dead zone 7.
The pitch arc overflow plate 6 is installed in the space that sharp overflow plate 8 and semicircle bottom plate 12 enclose, and the bottom of pitch arc overflow plate 6 is located semicircle board 12, and two sides of pitch arc overflow plate 6 and two sides coincidence of sharp overflow plate 8, the top exceeds one section distance in sharp overflow plate 8 top. A space surrounded by the arc overflow plate 6, the linear overflow plate 8 and the semicircular bottom plate 12 is a liquid phase buffer dead zone 7; the space enclosed by the arc line overflow plate 6, the deaerator cylinder 4 and the semicircular bottom plate 12 is a gas-liquid ascending space 5. The diameter of the arc overflow plate 6 is 3 times of the diameter of the cylinder 4 of the air eliminator. The height value of the top of the arc line overflow plate 6 higher than that of the straight line overflow plate 8 ensures that 60-70% of the liquid phase overflowing from the arc line overflow plate 6 enters the liquid phase buffer dead zone 7 to carry out the second overflow separation of the straight line overflow plate 8. The tube flow partition in the gas-liquid rising channel 5 is located in the laminar flow range.
The gas-liquid interface is positioned in the space on the other side enclosed by the straight overflow plate 8 and the air eliminator cylinder 4, the gas phase space 11 is arranged above the gas-liquid interface, and the liquid phase space 12 is arranged below the gas-liquid interface. The float valve 10 is mature equipment, the float ball is positioned at a gas-liquid interface, and gas phase is controlled to enter the emptying system through the gas phase outlet 3 according to the gas phase aggregation amount of the gas phase space 11; the pure liquid phase after degassing is sent to a downstream mass flow meter through a liquid phase outlet 2 for metering operation.
As shown in the attached figure 1, the working process of the invention is as follows: firstly, liquid phase carrying small bubbles or small gas groups enters a gas-liquid ascending channel 5 through a gas eliminator inlet 1; the gas and liquid flow upwards to reach the top of the gas and liquid ascending channel, and the large gas mass directly enters the gas phase space 11; the liquid phase carrying the small bubbles is subjected to primary overflow separation through the top of the arc overflow plate 6, and the small bubbles escape into the gas phase space 11 in the liquid phase overflow process; after the liquid phase overflows into the liquid phase buffer dead zone 7, the liquid phase is subjected to secondary overflow separation through the top of the linear overflow plate 8, the residual small bubbles escape into the gas phase space 11, and the liquid phase enters into the liquid phase space 9; the float valve 10 controls the gas phase in the gas phase space 11 to be discharged into the discharge system through the gas phase outlet 3; the liquid phase is sent to a mass flowmeter through a liquid phase outlet 2 for metering operation.
Claims (6)
1. A three-cavity type air eliminator is a vertical cylinder body with end sockets at two ends, an arc line overflow plate and a straight line overflow plate are arranged inside the air eliminator cylinder body, and the arc line overflow plate and the straight line overflow plate divide the inner space of the air eliminator into a gas-liquid ascending space, a liquid phase buffer dead zone and a liquid phase space; the round bottom plate is arranged at the bottom of an arc overflow plate and a straight overflow plate in the air eliminator and serves as a bottom plate of a gas-liquid rising space and a liquid-phase buffer dead zone; the gas phase outlet is arranged on one side of the side surface of the top of the cylinder body of the air eliminator, which is close to the gas-liquid rising space, and a ball float valve is arranged on the gas phase outlet; the liquid phase outlet is arranged on the side surface of the bottom of the cylinder body of the air eliminator and is communicated with the liquid phase space; the inlet of the air eliminator is arranged on the side wall of the cylinder body of the air eliminator and is positioned at the bottom of the gas-liquid ascending space; the space surrounded by the arc line overflow plate, the linear overflow plate and the round bottom plate is a liquid phase buffer dead zone; and a space enclosed by the arc line overflow plate, the air eliminator cylinder and the circular segment bottom plate is a gas-liquid ascending space.
2. The three-chamber air eliminator of claim 1, wherein: the air eliminator is a vertical cylinder with round end sockets at two ends.
3. The three-chamber air eliminator of claim 1, wherein: the diameter of the arc line overflow plate is 2-3 times of the diameter of the cylinder of the air eliminator.
4. The three-chamber air eliminator of claim 1, wherein: the top of the arc line overflow plate is 0.2-0.3 times higher than that of the straight line overflow plate.
5. The three-chamber air eliminator of claim 1, wherein: the width of the linear overflow plate is the same as the diameter of the cylinder body of the air eliminator, and the bottom of the linear overflow plate coincides with the linear edge of the circular notch bottom plate.
6. The three-chamber air eliminator of claim 1, wherein: the round bottom plate is a semicircular bottom plate and has the same diameter as the cylinder body of the air eliminator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838799.5A CN109513237B (en) | 2017-09-18 | 2017-09-18 | Three-cavity type air eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838799.5A CN109513237B (en) | 2017-09-18 | 2017-09-18 | Three-cavity type air eliminator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109513237A CN109513237A (en) | 2019-03-26 |
| CN109513237B true CN109513237B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710838799.5A Active CN109513237B (en) | 2017-09-18 | 2017-09-18 | Three-cavity type air eliminator |
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| Country | Link |
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| CN (1) | CN109513237B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3457064A (en) * | 1966-05-24 | 1969-07-22 | Chemical Construction Corp | Continuous vacuum degassing of liquids |
| CN201308783Y (en) * | 2008-11-30 | 2009-09-16 | 李东田 | Bubble-free entrained overflowing liquid seal |
| JP6008482B2 (en) * | 2011-09-15 | 2016-10-19 | 株式会社バンテック | Gas generator |
| CN205391814U (en) * | 2016-03-07 | 2016-07-27 | 沈阳化工大学 | Board hydrocyclone separation device is rolled up to spiral |
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| CN109513237A (en) | 2019-03-26 |
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