CN107670338B - Outward flow type air eliminator - Google Patents
Outward flow type air eliminator Download PDFInfo
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- CN107670338B CN107670338B CN201710856140.2A CN201710856140A CN107670338B CN 107670338 B CN107670338 B CN 107670338B CN 201710856140 A CN201710856140 A CN 201710856140A CN 107670338 B CN107670338 B CN 107670338B
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- cylinder body
- outer cylinder
- gas phase
- phase outlet
- annular space
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- 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
Abstract
The invention discloses an outward flow type air eliminator which mainly comprises a vertical outer cylinder body, a middle cylinder body and an inner cylinder body, wherein the two ends of the vertical outer cylinder body are provided with end sockets; the outer cylinder, the middle cylinder and the inner cylinder are coaxially arranged from outside to inside in sequence, the upper edge of the inner cylinder is higher than the upper edge of the middle cylinder, and a rotation stopping fan plate is arranged on the inner wall of the inner cylinder close to the bottom of the inner cylinder; the center of the bottom seal head of the outer cylinder body is provided with a medium inlet, a gas phase outlet is arranged at the corresponding position on the top seal head of the outer cylinder body right above the outer annular space, a ball float valve is arranged at the gas phase outlet, and a liquid phase outlet communicated with the outer annular space is arranged on the side wall of the bottom of the outer cylinder body. The invention adopts the design of the rotation stopping fan plate and the three-cylinder type, the inner cylinder gradually overflows to the outer cylinder, and small bubbles or air mass carried in the liquid phase are separated, so that the separation effect is improved, and the air eliminator has simpler structure and more convenient and reliable operation.
Description
Technical Field
The invention belongs to the technical field of oil-gas separation and flow guarantee, and particularly relates to an outward flow type deaerator.
Background
Air bubbles, impurities and the like entering the mass flowmeter not only can cause inaccurate metering of the flowmeter, but also can cause abrasion damage to the internal structure of the flowmeter. Flow guarantee equipment such as a gas eliminator and a filter is additionally arranged in front of the mass flow meter to guarantee stable and accurate metering of the mass flow meter.
The gas eliminator is essentially different from the separation equipment in general meaning, the gravity separator or the cyclone separator mainly aims at oil gas with high gas-liquid ratio, the gas and the liquid are continuous phases, and the gas and the liquid are separated from each other under the action of gravity, buoyancy or centrifugal force; the air eliminator is mainly used for eliminating small bubbles or small air masses serving as dispersed phases in a liquid phase and preventing the small bubbles or the air masses from entering the mass flow meter.
The difference of the separation objects causes the separation mechanism of the air eliminator and the general separator to be different in focus, the centrifugal force, the gravity and the buoyancy cannot play the most important roles in the air eliminator, and the overflow separation is indispensable in the separation mechanism of the air eliminator. The overflow separation mechanism is fully utilized, and the method has important significance in optimally designing the internal structure of the air eliminator.
CN102225252A discloses a cyclone air eliminator, in which fluid enters a container along a direction tangential to the inner wall of the air eliminator shell, and then rotationally flows in a funnel-shaped separation cylinder, the gas is collected towards the center of the funnel and moves upwards, and is collected to the top of the air eliminator shell to be exhausted, and the liquid flows downwards to be discharged through a liquid outlet pipe, so as to realize gas-liquid separation. CN202674694U discloses a degasifier for crude oil pipeline, which is mainly used for separating and discharging gases mixed in crude oil, and mainly comprises a main body structure and an exhaust valve. Both types of deaerators can discharge gas from liquid to a certain extent, but have a limited deaeration effect.
Disclosure of Invention
The invention provides an outward flow type deaerator, aiming at solving the technical problems that the deaeration effect is poor and the metering accuracy is difficult to ensure in the prior art.
The invention provides an outward flow type air eliminator which mainly comprises a vertical outer cylinder body with end sockets at two ends, a middle cylinder body and an inner cylinder body which are arranged in the outer cylinder body; the inner barrel is provided with a rotation stopping fan plate which divides the cross section of the inner barrel into a plurality of fan-shaped flow channels on the inner wall of the inner barrel close to the bottom of the inner barrel, and a gas phase area is formed above the middle barrel and below the top seal head of the outer barrel; the center of the end socket at the bottom of the outer cylinder is provided with a medium inlet, a gas phase outlet is arranged at the corresponding position on the end socket at the top of the outer cylinder right above the outer annular space, the gas phase outlet is provided with a ball float valve, the ball float valve floats on a gas-liquid interface of the gas phase area and the liquid phase area in the outer annular space, and the side wall of the bottom of the outer cylinder is provided with a liquid phase outlet communicated with the outer annular space.
The circumferential angle formed by the liquid phase outlet and the gas phase outlet with the outer cylinder axis as the center can be any angle, generally 0 °, 90 ° or 180 °.
The rotation stopping fan plate mainly comprises 3-9 rectangular fan plates and a central upright post, the rectangular fan plates take the central upright post as an axis, are uniformly distributed and welded on the central upright post along the circumferential direction, and are integrally in an impeller shape; each rectangular sector plate is welded with the inner wall of the inner cylinder body at one side axially parallel to the central upright post, and the cross section of the inner cylinder body is divided into 3-9 sector flow channels. The main function of the rotation stopping fan plate is to eliminate the tangential velocity of fluid in a flow field and convert the fluid into stable axial motion. The number of the fan plates of the rotation stopping fan plate is not less than 3, and the effect of eliminating the tangential speed is difficult to be realized by the too small number of the fan plates.
The float valve is mature equipment and is arranged at a gas phase outlet, and the float ball is positioned on a gas-liquid interface. The gas-liquid interface is positioned in the outer layer annular space, a gas phase area is arranged above the gas-liquid interface, and a liquid phase area is arranged below the gas-liquid interface. When the gas phase in the container is gathered to a certain degree, the gas-liquid interface descends, the float valve is opened under the driving of the float, and the gas phase is discharged into the emptying system through the gas phase outlet.
The basic principle of the invention is that firstly, liquid phase carrying small bubbles or small gas groups enters an inner cylinder body through a medium inlet arranged at the center of a seal head at the bottom of the outer cylinder body; the gas-liquid inflow moves from bottom to top in the inner cylinder body and stabilizes the flow field through the rotation stopping fan plate; the liquid phase carrying the small bubbles enters an inner layer annular space formed by the inner cylinder and the middle cylinder through the overflow of the upper edge of the inner cylinder, and the small bubbles or air mass float and enter a gas phase area in the process, so that the first overflow separation is realized; the liquid phase in the inner annular space overflows from the upper edge of the middle cylinder body and enters the outer annular space, and the residual small bubbles escape and enter a gas phase area for the second overflow separation; the gas phase is gathered to a certain degree, the liquid level in the outer annular space is reduced, the float valve of the air eliminator is opened, and the gas phase is discharged into a venting system through a gas phase outlet; and the liquid phase after degassing enters a metering system through a liquid phase outlet.
The invention has the advantages that: adopt and stop fan board and three drum designs, the inner tube overflows to outer section of thick bamboo gradually, separates the microbubble or the air pocket that carry in the liquid phase, has improved the separation effect, and makes the air eliminator structure simpler, and the operation is convenient and reliable more.
Drawings
FIG. 1 is a schematic structural view of an outflow deaerator of the present invention;
fig. 2 is a schematic structural view of the stop rotating fan plate of fig. 1.
In the figure: 1-medium inlet, 2-liquid phase outlet, 3-gas phase outlet, 4-ball float valve, 5-inner cylinder, 6-inner annular space, 7-middle cylinder, 8-outer annular space, 9-outer cylinder, 10-gas phase zone, 11-rotation stopping fan plate, 12-top end socket, 13-bottom end socket, 14-central upright post and 15-rectangular fan plate.
Detailed Description
The structural layout and operation flow of the present invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1, the outward flow type air eliminator provided by the invention mainly comprises a vertical outer cylinder 9 with end sockets at two ends, a middle cylinder 7 and an inner cylinder 5 which are arranged in the outer cylinder 9; the outer cylinder 9, the middle cylinder 7 and the inner cylinder 5 are coaxially arranged from outside to inside in sequence, the middle cylinder 7 and the inner cylinder 5 are arranged on a bottom end enclosure 13 of the outer cylinder 9, an outer layer annular space 8 with a closed bottom and an opened top is formed between the inner wall of the outer cylinder 9 and the outer wall of the middle cylinder 7, an inner layer annular space 6 with a closed bottom and an opened top is formed between the inner wall of the middle cylinder 7 and the outer wall of the inner cylinder 5, the upper edge of the inner cylinder 5 is higher than the upper edge of the middle cylinder 7, a rotation stopping fan plate 11 for dividing the cross section of the inner cylinder into a plurality of fan-shaped flow channels is arranged on the inner wall of the inner cylinder close to the bottom of the inner cylinder 5, and a gas phase area 10 is formed in the area; a medium inlet 1 is arranged in the center of a bottom end enclosure 13 of the outer cylinder 9, a gas phase outlet 3 is arranged at a corresponding position on a top end enclosure 12 of the outer cylinder right above the outer annular space 8, a ball float valve 4 is arranged at the gas phase outlet 3, the ball float valve 4 floats on a gas-liquid interface between a gas phase area 10 and a liquid phase area in the outer annular space 8, and a liquid phase outlet 2 communicated with the outer annular space 8 is arranged on the side wall of the bottom of the outer cylinder 9.
The liquid phase outlet 2 and the gas phase outlet 3 form a circumferential angle of 180 ° with respect to the axis of the outer cylinder 5.
As shown in fig. 2, the rotation-stopping fan plate 11 is mainly composed of 4 rectangular fan plates 15 and a central upright post 14, the rectangular fan plates 15 are uniformly distributed and welded on the central upright post 14 along the circumferential direction by taking the central upright post 14 as an axis, and the whole is in an impeller shape; each rectangular sector plate 15 is welded with the inner wall of the inner cylinder body at one side axially parallel to the central upright post, and the cross section of the inner cylinder body is divided into 4 sector flow channels.
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 the inner cylinder body 5 through a medium inlet 1 arranged at the center of a seal head at the bottom of the outer cylinder body; the gas-liquid inflow moves from bottom to top in the inner cylinder 5 and stabilizes the flow field through the rotation stopping fan plate 11; the liquid phase carrying the small bubbles enters an inner layer annular space 6 between the inner cylinder 5 and the middle cylinder 7 through the overflow of the upper edge of the inner cylinder 5, and the small bubbles or air mass float and rise into a gas phase area 10 in the process, so that the first overflow separation is realized; the liquid phase in the inner annular space 6 overflows from the middle cylinder 7 to enter the outer annular space 8, and residual small bubbles escape to enter a gas phase region 10 for second overflow separation; the liquid level in the outer annular space 8 is decreased to a certain degree after the gas phase is gathered, the float valve 4 of the air eliminator is opened, the gas phase is discharged into the emptying system through the gas phase outlet 3, and the liquid phase after air elimination enters the metering system through the liquid phase outlet 2.
Claims (3)
1. An outflow air eliminator, characterized in that: mainly comprises a vertical outer cylinder body with end sockets at two ends, a middle cylinder body and an inner cylinder body which are arranged in the outer cylinder body; the inner barrel is provided with a rotation stopping fan plate which divides the cross section of the inner barrel into a plurality of fan-shaped flow channels on the inner wall of the inner barrel close to the bottom of the inner barrel, and a gas phase area is formed above the middle barrel and below the top seal head of the outer barrel; the center of the end socket at the bottom of the outer cylinder is provided with a medium inlet, a gas phase outlet is arranged at the corresponding position on the end socket at the top of the outer cylinder right above the outer annular space, the gas phase outlet is provided with a ball float valve, the ball float valve floats on a gas-liquid interface of the gas phase area and the liquid phase area in the outer annular space, and the side wall of the bottom of the outer cylinder is provided with a liquid phase outlet communicated with the outer annular space.
2. A getter according to claim 1, wherein: the circumferential angle formed by the liquid phase outlet and the gas phase outlet with the axis of the outer cylinder as the center is 0 degree, 90 degrees or 180 degrees.
3. A getter according to claim 1, wherein: the rotation stopping fan plate mainly comprises 3-9 rectangular fan plates and a central upright post, the rectangular fan plates take the central upright post as an axis, are uniformly distributed and welded on the central upright post along the circumferential direction, and are integrally in an impeller shape; each rectangular sector plate is welded with the inner wall of the inner cylinder body at one side axially parallel to the central upright post, and the cross section of the inner cylinder body is divided into 3-9 sector flow channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856140.2A CN107670338B (en) | 2017-09-21 | 2017-09-21 | Outward flow type air eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856140.2A CN107670338B (en) | 2017-09-21 | 2017-09-21 | Outward flow type air eliminator |
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| Publication Number | Publication Date |
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| CN107670338A CN107670338A (en) | 2018-02-09 |
| CN107670338B true CN107670338B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710856140.2A Active CN107670338B (en) | 2017-09-21 | 2017-09-21 | Outward flow type air eliminator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202674694U (en) * | 2011-11-17 | 2013-01-16 | 中国石油化工股份有限公司 | Gas eliminating device for crude oil pipeline |
| CN203043639U (en) * | 2012-11-08 | 2013-07-10 | 广西华纳新材料科技有限公司 | Device for liquid defoaming |
| CN203558884U (en) * | 2013-09-18 | 2014-04-23 | 宁波明泰流量设备有限公司 | High-flow liquid gas eliminator for container |
| CN203678022U (en) * | 2013-12-02 | 2014-07-02 | 天津斯秘特精密仪表股份有限公司 | Air eliminator |
| CN204656168U (en) * | 2015-05-21 | 2015-09-23 | 中国海洋石油总公司 | A kind of swirl flow gas-liquid separator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205252613U (en) * | 2015-12-29 | 2016-05-25 | 南京天梯自动化设备股份有限公司 | Plumbing installation of cooling down |
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2017
- 2017-09-21 CN CN201710856140.2A patent/CN107670338B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202674694U (en) * | 2011-11-17 | 2013-01-16 | 中国石油化工股份有限公司 | Gas eliminating device for crude oil pipeline |
| CN203043639U (en) * | 2012-11-08 | 2013-07-10 | 广西华纳新材料科技有限公司 | Device for liquid defoaming |
| CN203558884U (en) * | 2013-09-18 | 2014-04-23 | 宁波明泰流量设备有限公司 | High-flow liquid gas eliminator for container |
| CN203678022U (en) * | 2013-12-02 | 2014-07-02 | 天津斯秘特精密仪表股份有限公司 | Air eliminator |
| CN204656168U (en) * | 2015-05-21 | 2015-09-23 | 中国海洋石油总公司 | A kind of swirl flow gas-liquid separator |
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| CN107670338A (en) | 2018-02-09 |
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