CN107648888B - Air separator and gas-liquid separating method for gas-liquid separation - Google Patents

Air separator and gas-liquid separating method for gas-liquid separation Download PDF

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Publication number
CN107648888B
CN107648888B CN201710950583.8A CN201710950583A CN107648888B CN 107648888 B CN107648888 B CN 107648888B CN 201710950583 A CN201710950583 A CN 201710950583A CN 107648888 B CN107648888 B CN 107648888B
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liquid
gas
inner cylinder
shell
air separator
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CN107648888A (en
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李战杰
王以斌
姚建军
王文昊
何龙辉
李津
王惠勤
杜富国
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Sinopec Engineering Group Co Ltd
Sinopec Guangzhou Engineering Co Ltd
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Sinopec Engineering Group Co Ltd
Sinopec Guangzhou Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D19/00Degasification of liquids
    • B01D19/02Foam dispersion or prevention
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D19/00Degasification of liquids
    • B01D19/0031Degasification of liquids by filtration

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

The invention discloses a kind of air separators and gas-liquid separating method for gas-liquid separation, to solve the problems, such as that the liquid after being difficult to that effectively the bubble separation in liquid is gone out, separated present in existing air separator often contains larger diameter bubble.Air separator of the present invention is equipped with vertical shell (5), and the lower part of shell is equipped with inlet tube (1), liquid outlet tube (2), and top is equipped with gas outlet tube (3).Air separator is additionally provided with the ball-cock assembly that can control gas outlet tube exhaust and choke.Vertical in shell to be provided with inner cylinder (6), the bottom of inner cylinder is communicated with inlet tube.The lower part of inner cylinder is equipped with rectification orifice plate (7), and the top for rectifying orifice plate is equipped with spin-ended component, and spin-ended component top to the region between inner cylinder top is stabilization area (12).The invention discloses the methods for carrying out gas-liquid separation using above-mentioned air separator.Present invention is mainly used for the gas-liquid separations of liquid flow measurement technical field, can provide reliable guarantee for the accurate measurement of mass flowmenter.

Description

Air separator and gas-liquid separating method for gas-liquid separation
Technical field
The present invention relates to a kind of for the air separator of gas-liquid separation and gas-liquid separation side of liquid flow measurement technical field Method.
Background technique
Mass flowmenter can measure quality, the density parameter of liquid simultaneously, be a kind of important measuring instrument.Liquid exists During storage, pipeline conveying, handling ship, loading-unloading vehicle etc., the two-phase fluid of coexistence of gas and liquid easy to form.For example, petroleum industry In pump of the oil product between feed-line and oil tank into pump out, the rise and fall of pasta, daylight add the radiation of pipeline in storage tank Heat overcomes the decline of hydrostatic head caused by frictional resistance etc. along the line, can all cause the precipitation of light component in oil product, form minute bubbles point Cloth is in oil product.When flow using mass flow meter measurement containing bladdery liquid, bubble can make the metering of mass flowmenter There is falseness in value, causes measuring error;Due to the uncertainty of gas content, it is difficult to by adjusting or compensation come eliminate this void Falsity.In addition, bubble enters post-concentration collection inside mass flowmenter, inside the mass flowmenter of impact abrasion for a long time, to quality Flowmeter causes permanent irreversible damage.Therefore, liquid must use air separator will wherein before entering mass flowmenter Bubble remove.A kind of existing air separator is equipped with vertical shell, and the cross-sectional shape of shell is circle.The lower part of shell is set There are inlet tube, liquid outlet tube, top is equipped with gas outlet tube.Air separator, which is additionally provided with, can control gas outlet tube exhaust and resistance The ball-cock assembly of gas, ball-cock assembly are made of floating ball, connecting rod and main valve.It is equipped with vertical rectangle baffle in shell, contains bladdery liquid Enter air separator and impingement baffles through inlet tube, gas-liquid separation is carried out in knockout process.Due to carrying out gas-liquid point using shock From effect it is inherently not good enough, along with liquid is in violent turbulent condition in knockout process, therefore above-mentioned cool down Device is difficult to that effectively the bubble separation in liquid is gone out, and the liquid after separation contains the gas that diameter is greater than 1000 microns toward contact Bubble.The diameter of liquid institute of the present invention bubbles, measures under the actually located operating condition of related liquid.
Summary of the invention
The object of the present invention is to provide a kind of air separators and gas-liquid separating method for gas-liquid separation, to solve existing disappear It is difficult to the liquid after effectively the bubble separation in liquid is gone out, separated present in gas device and often contains larger diameter bubble The problem of.
To solve the above problems, the technical solution adopted by the present invention is that: a kind of air separator for gas-liquid separation is equipped with vertical The shell of formula, the lower part of shell are equipped with inlet tube, liquid outlet tube, and top is equipped with gas outlet tube, and air separator is additionally provided with can be with Control gas outlet tube exhaust and the ball-cock assembly of choke, it is characterised in that: it is vertical in shell to be provided with inner cylinder, the bottom of inner cylinder with Inlet tube communicates, and the lower part of inner cylinder is equipped with rectification orifice plate, and the top for rectifying orifice plate is equipped with spin-ended component, and spin-ended component top is to interior Region between cylinder top is stabilization area, and annular space is formed between shell and inner cylinder.
The method that gas-liquid separation is carried out using above-mentioned air separator, it is characterised in that: containing bladdery liquid by inlet tube Into inner cylinder bottom and flow up, flow through rectification orifice plate and rectified, pass through spin-ended component and carry out spin-ended, liquid is by only Enter stabilization area after the top outflow of rotation component, continue up the top for flowing to inner cylinder, at the top of inner cylinder, liquid is by inner cylinder Top edge overflow enter in annular space and flow downward, finally flowed out by liquid outlet tube, the liquid in annular space The space of formation liquid level, ullage and inner cylinder over top is gas-phase space, mistake of the liquid in the overflow of inner cylinder top edge Gas-liquid separation is carried out in journey, contained bubble is separated, and is upwardly into gas-phase space.
Using the present invention, have following the utility model has the advantages that entering after inner cylinder containing bladdery liquid by rectification orifice plate and only Rotation component carry out rectification and it is spin-ended, flow field has obtained stabilization.Liquid stabilization area flow when by control stabilization area height and Flow rate of liquid can make liquid have time enough to be buffered, stablize, be flow at the top of inner cylinder with the laminar condition of low speed.This The liquid of sample, with low speed overflow, progress gas-liquid separation, can be such that bubble contained by liquid more fully separates at the top of inner cylinder It goes out.Detailed description, is shown in the specific embodiment part of description of the invention.It is the configuration of the present invention is simple, easy to use, mainly For the gas-liquid separation of liquid flow measurement technical field, the diameter of the liquid institute bubbles after gas-liquid separation is generally no greater than 300 microns, reliable guarantee can be provided for the accurate measurement of mass flowmenter.
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.Attached drawing and specific embodiment party Formula is not intended to limit the scope of protection of present invention.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the air separator of gas-liquid separation.
Fig. 2 is A-A cross-sectional view (amplification) in Fig. 1.
Fig. 3 is the top view (amplification) of rectification orifice plate shown in Fig. 1.
For Fig. 1 into Fig. 3, same reference numerals indicate identical technical characteristic.
Specific embodiment
Referring to figure 1, figure 2 and figure 3, the present invention is equipped with vertical outer for the air separator (referred to as air separator) of gas-liquid separation Shell 5, shell 5 are made of vertical and cylindrical cylinder and top end socket with bottom bulkhead.The lower part of shell 5 is equipped with inlet tube 1, liquid Outlet 2, top are equipped with gas outlet tube 3.In Fig. 1, inlet tube 1 is set on the bottom bulkhead of shell 5, and gas outlet tube 3 is set In on the top end socket of shell 5, liquid outlet tube 2 is set to the lower part of 5 cylindrical drum of shell.Air separator, which is additionally provided with, can control The ball-cock assembly of gas outlet tube 3 exhaust and choke, ball-cock assembly are made of floating ball 81, connecting rod 82 and main valve 83.Ball-cock assembly is existing Mature equipment, the present invention only carries out brief description and diagram.
It is vertical in shell 5 to be provided with columnar inner cylinder 6, the axis parallel of shell 5 and inner cylinder 6.The bottom sides of inner cylinder 6 Edge is fixed on the bottom bulkhead of shell 5, and top edge is located at the lower section of gas outlet tube 3.The bottom of inner cylinder 6 and inlet tube 1 It communicates, inner cylinder 6 and inlet tube 1 are generally coaxially disposed.The lower part of inner cylinder 6 is equipped with rectification orifice plate 7, and the top of rectification orifice plate 7 is equipped with Spin-ended component, spin-ended component top to the region between 6 top of inner cylinder is stabilization area 12, and the height a of stabilization area 12 is generally interior 3~5 times of 6 interior diameters of cylinder.(more specifically, 5 cylindrical drum of shell of annular space 11 is formed between shell 5 and inner cylinder 6 Annular space 11 is formed between medial surface and bottom bulkhead inner surface and 6 lateral surface of inner cylinder), liquid outlet tube 2 and annular space 11 communicate.Floating ball 81 is located at the top of annular space 11 and is located at the underface of gas outlet tube 3.Ball-cock assembly and gas outlet tube 3 use above-mentioned arrangement, primarily to convenient for setting ball-cock assembly.
Shell 5 can be coaxially disposed coaxially or with inner cylinder 6, be preferably coaxially disposed, as depicted in figs. 1 and 2.Coaxially set When setting, the cross-sectional shape of annular space 11 is circular ring shape.
The length (i.e. circumference is calculated by the internal diameter of inner cylinder 6) of 6 top edge of inner cylinder is generally 5 cylindrical drum of shell 1.5~2 times of interior diameter, the interior diameter of 5 cylindrical drum of inner cylinder 6 and shell is mainly depending on the treating capacity of liquid.On The length for stating 6 top edge of inner cylinder is longer, when one timing of fluid flow from 6 top edge overflow of inner cylinder, the speed of liquid flooding Degree can be relatively slow, and the bubble in liquid is easy to be sufficiently separated away.It is biggish transversal that above-mentioned length can also be such that inner cylinder 6 has Area (cross-sectional area is calculated by the internal diameter of inner cylinder 6);Along in the height a and stabilization area 12 of the stabilization area 12 of the invention provided The flow velocity of liquid, to ensure that, its Guan Liufen during the liquid flows upwards in stabilization area 12 to 6 top of inner cylinder Area can reach laminar flow domain, realize smooth flow, create for the separation of liquid its bubbles in 6 top edge overflow of inner cylinder Make good condition.
Referring to Fig. 1, Fig. 3 and Fig. 2, rectifying orifice plate 7 is the plectane for being covered with rectification hole.Rectification hole can be round hole, length The shapes such as square hole, it is regularly arranged by square or equilateral triangle.The area of single rectification hole is generally 1000~4000 squares The percent opening of millimeter, rectification orifice plate 7 is generally 60%~65%.The interior diameter of inlet tube 1 is usually less than the interior diameter of inner cylinder 6, The process that an expanding flowing is had when entering the bottom of inner cylinder 6 by inlet tube 1 containing bladdery liquid, causes liquid flow field Disorder.The effect of rectification orifice plate 7 is exactly to flow through the disorder for eliminating liquid flow field after rectification hole.Rectify orifice plate 7 Percent opening is answered as large as possible, because will cause too strong throttle effect when percent opening is too small, causes the disorderly of liquid flow field instead Disorderly.Rectification orifice plate 7 is usually provided in the top at the top of inlet tube 1, near 1 top of inlet tube.
Referring to Fig. 1 and Fig. 2, the cylinder that a kind of spin-ended component used in the present invention is located on 6 axial line of inner cylinder by one Column 91 and 4~6 pieces of rectangle vertical plates 92 composition being uniformly arranged around column 91.Column is fixed in one end of each piece of rectangle vertical plate 92 On 91 side, the other end is connected with the medial surface of inner cylinder 6.The height b of rectangle vertical plate 92 is generally the 0.5 of 6 interior diameter of inner cylinder ~1.5 times.The main function of spin-ended component is the tangential velocity for eliminating liquid, makes axially upwards flowing of the liquid along inner cylinder 6.
Referring to Fig. 1 and Fig. 2, filter screen 10 can be set in annular space 11, to filter out the solid impurity in liquid, prevents Only solid impurity enters mass flowmenter.Filter screen 10 is set to the lower section on the top of annular space 11, floating ball 81 and liquid level 4.It crosses Existing various filter screens can be selected in strainer 10, can filter out partial size in liquid in 250 microns or more of solid impurity.Figure 1 and filter screen shown in Fig. 2 10 be silk screen filter net, shape be round table surface shape.The edge in its top center hole is outer with inner cylinder 6 Side is connected, and bottom margin is connected with the medial surface of 5 cylindrical drum of shell.The folder between bus and horizontal plane in round table surface Angle α is generally 10~30 degree, preferably 10~20 degree.
The cross-sectional shape of various pipelines of the present invention is generally circle, and ball-cock assembly selects the floating ball of gasproof corrosion Valve, the material of remaining each component are generally stainless steel (such as 304 stainless steels).Ball-cock assembly is installed by existing conventional method, Connection or fixed generally using welding between remaining part part.
The method that explanation carries out gas-liquid separation using the above-mentioned air separator of the present invention with reference to the accompanying drawing.Containing bladdery liquid Body is entered the bottom of inner cylinder 6 by inlet tube 1 and is flowed up, and flows through rectification orifice plate 7 and is rectified, passes through spin-ended component and carry out It is spin-ended.Liquid through over commutation and it is spin-ended after, flow field is stablized.Liquid is by entering stabilization area after the top outflow of spin-ended component 12, the top for flowing to inner cylinder 6 is continued up.At the top of inner cylinder 6, liquid enters annular by the top edge overflow of inner cylinder 6 It in space 11 and flows downward, is finally flowed out by liquid outlet tube 2, carry out metering work into mass flowmenter.Annular space The space of liquid formation liquid level 4 in 11,4 top of liquid level and 6 over top of inner cylinder is gas-phase space.Liquid is pushed up in inner cylinder 6 Gas-liquid separation is carried out during portion's rim overflow, contained bubble is separated, and is upwardly into gas-phase space.
Floating ball 81 floats on liquid level 4.When the gas in gas-phase space increases, liquid level 4 and floating ball 81 decline;To certain When degree, floating ball 81 drives main valve 83 to open by connecting rod 82, and gas outlet tube 3 is in exhaust condition, the gas in gas-phase space Body is flowed out through gas outlet tube 3.When the gas in gas-phase space is reduced, liquid level 4 and floating ball 81 rise;When to a certain extent, Floating ball 81 drives main valve 83 to close by connecting rod 82, and gas outlet tube 3 is in gas-blocking state, and the gas in gas-phase space persistently increases It is more.In Fig. 1 and Fig. 2 of the present invention, the arrow for not infusing appended drawing reference indicates Liquid Flow direction.
In above-mentioned separation process, the flow velocity containing bladdery liquid in stabilization area 12 be generally 0.2~0.5 meter/ Second, flow pattern when liquid reaches 12 top of stabilization area is laminar flow.Above-mentioned flow rate of liquid is lower, can prevent flow field disorder, make It is flowed at the disorder of liquid institute bubbles;And in the range of the height a for the stabilization area 12 that the present invention provides, containing bladdery Liquid has time enough to be buffered during flowing up, stablizes.Containing bladdery liquid in 6 top edge of inner cylinder The flow velocity of overflow is generally 0.5~0.8 meter per second.The diameter of the liquid flowed out by liquid outlet tube 2, institute's bubbles is generally little In 300 microns.

Claims (3)

1. a kind of gas-liquid separating method, using the air separator for gas-liquid separation, air separator is equipped with vertical shell (5), shell (5) lower part is equipped with inlet tube (1), liquid outlet tube (2), and top is equipped with gas outlet tube (3), vertical setting in shell (5) Having inner cylinder (6), the bottom of inner cylinder (6) is communicated with inlet tube (1), annular space (11) are formed between shell (5) and inner cylinder (6), It is characterized by: the lower part of inner cylinder (6) is equipped with rectification orifice plate (7), the top of rectification orifice plate (7) is equipped with spin-ended component, spin-ended portion Region between at the top of part top to inner cylinder (6) is stabilization area (12), and air separator, which is additionally provided with, can control gas outlet tube (3) row The ball-cock assembly of gas and choke;
Gas-liquid separating method is as follows: entering the bottom of inner cylinder (6) by inlet tube (1) containing bladdery liquid and flows up, flows Rectified orifice plate (7) is rectified, and is passed through spin-ended component and is carried out spin-ended, liquid enters steady after being flowed out by the top of spin-ended component Stream area (12) continues up the top for flowing to inner cylinder (6), realizes smooth flow, at the top of inner cylinder (6), liquid is by inner cylinder (6) top edge is entered in annular space (11) and is flowed downward with the flow velocity overflow of 0.5~0.8 meter per second, finally by liquid Outlet (2) flows out, and the liquid in annular space (11) forms liquid level (4), liquid level (4) top and inner cylinder (6) over top Space be gas-phase space, liquid carries out gas-liquid separation during inner cylinder (6) top edge overflow, and contained bubble is divided It separates out, is upwardly into gas-phase space.
2. gas-liquid separating method according to claim 1, it is characterised in that: the length of inner cylinder (6) top edge is shell (5) 1.5~2 times of cylindrical drum interior diameter, the height a of stabilization area (12) are 3~5 times of inner cylinder (6) interior diameter.
3. gas-liquid separating method according to claim 1, it is characterised in that: be equipped with filter screen in annular space (11) (10)。
CN201710950583.8A 2017-10-13 2017-10-13 Air separator and gas-liquid separating method for gas-liquid separation Active CN107648888B (en)

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CN109733752B (en) * 2019-03-20 2020-10-13 诸暨市浣港机械厂 Improved structure of liquid storage tank of rubber production device
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CN115400460A (en) * 2021-05-28 2022-11-29 深圳市帝迈生物技术有限公司 Bubble separation device and method
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Publication number Priority date Publication date Assignee Title
CN2718462Y (en) * 2004-01-14 2005-08-17 张雪祥 Pipe evacuation atmospheric self-compensating pressure-bearing solar water heater tank
CN102225252A (en) * 2011-05-24 2011-10-26 涂强 Spiral-flow type gas eliminator
CN203281079U (en) * 2013-05-29 2013-11-13 轻工业杭州机电设计研究院 Vacuum degasifier
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