CN102039069B - Gas-liquid separation rotational flow plate and manufacturing method thereof - Google Patents
Gas-liquid separation rotational flow plate and manufacturing method thereof Download PDFInfo
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- CN102039069B CN102039069B CN 200910197425 CN200910197425A CN102039069B CN 102039069 B CN102039069 B CN 102039069B CN 200910197425 CN200910197425 CN 200910197425 CN 200910197425 A CN200910197425 A CN 200910197425A CN 102039069 B CN102039069 B CN 102039069B
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Abstract
The invention relates to a gas-liquid separation rotational flow plate and a manufacturing method thereof, which mainly solves the problems of poor rigidness and poor gas-liquid separation effect of the existing gas-liquid separation rotational flow plate. The invention better solves the problems by adopting the technical scheme that a) the gas-liquid separation rotational flow plate is in a three-dimensional structure comprising four surfaces, namely a surface (1), a surface (2), a surface (3) and a surface (4); b) the surface (1) is an irregular pentagon, the surface (2) and the surface (3) are triangles, and the surface (4) is a trapezoid; and c) the peaks of the surface (1), the surface (2), the surface (3) and the surface (4) are collected at a point A. The invention can be used for various gas-liquid separation processes and the manufacture of gas-liquid separators.
Description
Technical field
The present invention relates to a kind of gas-liquid separation rotational flow plate and manufacture method thereof.
Background technology
The spiral-flow plate-type gas-liquid separator is a kind of gas-liquid two-phase separation equipment commonly used in the chemical engineering industry, the air-flow of entrained drip is by behind the spiral board, because the angle of spiral board level and vertical both direction has produced and has rotatablely moved, liquid in the swirling eddy is under the synergy of centrifugal force and gravity, break away from air-flow, enter liquid collection region, finish the separation of gas-liquid two-phase.Gas enters downstream unit by gas vent.
Rotational flow plate device is the core component of gas-liquid separator, is installed in the porch of air-flow, and it is combined by some spiral boards, and the structure by plate and angle make air-flow produce rotation, thereby realizes the separation of gas-liquid two-phase.The version of spiral board has a great impact separative efficiency and pressure drop.Common flat spiral board or the rigidity of tile type spiral-plate leaf are relatively poor, and in the real-world operation process, blade easily is out of shape, and cause the actual angle of blade to change, and the eddy flow of gas is inconsistent, affects separating effect; Relatively poor also causing of rigidity produces vibration in the operating process, very easily cause the damage of blade, and send larger noise; Do not have enough Welding Structures, blade easily comes off from the gas-liquid separator cylindrical shell;
University of Petroleum has carried out analog study to the setting angle of spiral board, has proposed a comparatively suitable angular range, sees " amplification rule of spiral-flow plate-type gas-liquid separator ", the process engineering journal, the 5th phase of the 3rd volume, 2003, but the specific constructive form of spiral board is not made a search.
Chinese patent ZL01221773.5 relates to a kind of gas/liquid separator of acrylonitrile, separator is comprised of inlet tube, upper cone, blade, cylindrical shell, stabilizing feed well and outlet, it is characterized in that inlet tube is different from the outlet diameter, stabilizing feed well adopts double-sleeve structure.The structure and the manufacture method thereof that do not relate to blade in this technical scheme.
Summary of the invention
One of technical problem to be solved by this invention is relatively poor for spiral board rigidity in the prior art, and the problem that gas-liquid separation effect is relatively poor provides a kind of novel gas-liquid separating spiral-flow plate.This gas-liquid separation rotational flow plate has good rigidly, the characteristics that gas-liquid separation effect is good.
Two of technical problem to be solved by this invention provides a kind of gas-liquid separation rotational flow plate preparation method corresponding with one of technical solution problem.
For one of solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows: a kind of gas-liquid separation rotational flow plate, wherein,
A) spiral board is by 4 faces, the stereochemical structure that namely is comprised of face 1, face 2, face 3 and face 4;
B) face 1 is an irregular pentagon, and face 2 and face 3 are triangle, and face 4 is one trapezoidal;
C) summit of face 1, face 2, face 3 and 4 four faces of face comes together in 1 A.
In the technique scheme, the length of face 1 long straight flange DE is D/2sin α, D is the diameter of gas-liquid separator, α is the spiral board elevation angle, and vane tip DC length is 20～30 millimeters, and bottom AE length is 0.14～0.16 times of DE, the spiral board angle of elevation alpha is 30～40 °, radial angle β is 50～60 °, and the length of BC is 0.2～0.25 times of DE, and the length of AB is 0.65～0.75 times of DE.Face 3 bottom EG are the product of the diameter D and 360/ (sin2n degree) of gas-liquid separator, and this face requires the point through A, and n is the number of blade of gas-liquid separator, and the number of blade is that 36～46, AE overlaps with the AE limit of face 1, and the length of AG is 0.7～0.8 times of AE.The length of face 2 bottom AF is 40～60 millimeters, and AB overlaps with the AB of face 1, and the length of BF is 0.95～0.98 times of AB, and face 2 is 135 ± 5 ° with the angle of face 1.The AF of AF coplanar 2 bottoms, limit of face 4 overlaps, and limit FH is parallel to limit AG, and the length of FH is 0.35～0.45 times of AG, and AG overlaps with the AG of face 3, and another limit HG joins with adjacent spiral-plate leaf, and the angle between face 4 and the face 3 is 135 ± 5 °.
For address the above problem two, the technical solution used in the present invention is as follows: a kind of manufacture method of gas-liquid separation rotational flow plate may further comprise the steps:
1) according to required dimensional parameters, determines the number of degrees of each intersection size and corner cut by the three-dimensional drawing;
2) draw out the expanded view of spiral board;
3) carry out blanking by expanded view;
4) flat board after blanking marks the dotted line of flanging, and dotted line is divided into face 1, face 2, face 3 and face 4 with flat board, then requires to carry out flanging along dotted line and angle;
5) behind the flanging, the AF line of face 2 and face 4 overlaps together, should overlap side weld and connect, and spiral board namely completes.
Among the present invention, owing to dexterously the gas-liquid separator spiral board has been manufactured a stereochemical structure that is formed by four faces, effectively increased the bending rigidity of spiral board, bending rigidity is more than 3 times of common blade, greatly improved rigidity, also so that blade is not yielding, reduced the noise that produces because of deformable blade; Limit EG of the face 3 of spiral board and barrel soldering only have a point to compare with barrel soldering with flat spiral board, have greatly increased weld strength and the stability of whole blade in operating process, and the phenomenon of leaf abscission can not occur; On face 4, reserve a limit GH by certain angle, in order to weld with next blade, more strengthened the whole steadiness of gas-liquid separator; In operating process, gas-liquid mixture enters from the tangent plane of face 1, and 2 places have been subject to stopping at face, and the part drop has been trapped, and flows down along face 2, flows into the remittance liquid bath of gas-liquid separator through face 3, has improved gas-liquid separation effect; Face 4 has played the cofferdam and has increased the effect of spiral board rigidity.
Key point among the present invention and difficult point are the structural design of spiral board and determining of relative dimensions.Its design procedure is as follows:
A. determine the diameter of gas-liquid separator
According to experience in design, the air speed of separator is selected V=6～8m/s, and the treating capacity of suppose device is Q, then according to formula Q=π D
2V/4 can determine diameter D.
B. spiral board angle and sheet number determines
According to the pressure drop that allows, the spiral board angle of elevation alpha is at 30～40 °, 50～60 ° of radial angle β, and number of blade n is more than 36.
The length of face 1 long straight flange DE is about D/2sin α, and vane tip length DC is about 20～30 millimeters, and bottom AE length is 0.14～0.16 times of DE.
The length of face 2 bottom AF is 40～60 millimeters, needs to regulate this size so that air-flow is about about 20 meter per seconds by interlobate speed, and the length that face 2B point is ordered apart from face 1C is 0.2～0.25 times of DE, and face 2 is along the AB flanging, and the angle of assurance and face 1 is 135 ± 5 °.
The AF of AF coplanar 2 bottoms, limit of face 4 overlaps, and the angle between face 4 and the face 3 is 135 ± 5, and limit FH is parallel to limit AG, and another limit HG joins with last spiral-plate leaf.
After adopting above-mentioned gas-liquid separator spiral board and manufacture method thereof, the spiral board rigidity reinforced, bending rigidity has improved more than 3 times, and gas-liquid separation effect is improved, and brings up to more than 98% from 80%, has obtained preferably technique effect.
Description of drawings
Fig. 1 is the stereogram of gas-liquid separator spiral board among the present invention.
Fig. 2 is the exploded view of the stereogram of gas-liquid separator spiral board among the present invention.
Fig. 3 is the shop drawings of gas-liquid separator spiral board among the present invention.
Fig. 4 is the stereogram of gas-liquid separator spiral board in the comparative example.
Fig. 1, Fig. 2, or among Fig. 3,1 is that face 1,2 is that face 2,3 is that face 3,4 is face 4, and α is the spiral board elevation angle, and β is radial angle,
Be the diameter of gas-liquid separator, A is the pad of common spiral board and gas-liquid separator housing among Fig. 4.
Below by embodiment the present invention is further elaborated.
The specific embodiment
[embodiment]
A gas-liquid separator spiral board, it is by 4 faces, the stereochemical structure that is namely formed by face 1, face 2, face 3 and face 4, the summit of 4 faces comes together in 1 A.
This spiral board is fit to operating mode:
A. the gas-liquid separator diameter is 1900 millimeters;
B. blade quantity is 45;
C. the spiral board angle of elevation alpha is 30 °, and radial angle β is 55 °.
The spiral board size is as follows:
A. the long straight flange DE of face 1 is 1672 millimeters, and vane tip length DC is 26 millimeters, and bottom AE length is 251 millimeters, and the length of AB is 1148 millimeters, and the length of BC is 358 millimeters.
B. the bottom EG of face 3 is 134 millimeters.AE is 251 millimeters, and the length of AG is 193 millimeters.
C. the length of face 2 bottom AF is 48 millimeters, and the length of BF is 1113 millimeters, and AB overlaps with the AB of face 1, and the angle of face 2 coplanars 1 is 135 °.
D. the AG length of face 4 is 193 millimeters, and AF length is 48 millimeters, and FH is parallel to AG, and length is 74 millimeters, and intersection GH length is 157 millimeters.
When making gas-liquid separation rotational flow plate, be 00Cr17Ni14Mo2 in material, the thickness of steel plate is that upper size and angle according to said structure requires to determine an irregular polygon on 4 millimeters the steel plate, and determines the position that A is ordered; Outwards cut out a breach that is shaped as isosceles triangle as the summit take the A point, the long AF length of waist is 48 millimeters, 22 ° of drift angles; Fold along AB, AE, three lines of AG, two waists of breach weld after overlapping, and form by face 1,2,3 and 4 tetrahedral structures that form.
Compare with existing common gas-liquid separation rotational flow plate, the bending rigidity of above-mentioned gas-liquid separation rotational flow plate has improved more than 3 times.The averga cross section the moment of inertia of common spiral board (characterizing the parameter of cross section bending rigidity) is 550 millimeters
4, and the spiral board among the embodiment, owing to having designed folded edges, its averga cross section inertia has reached 2000 millimeters
4Above, bending resistance super common spiral board far away.
Substantially about 80%, spiral board has been used for domestic certain device to the separative efficiency of common spiral board among the embodiment, demarcates through relevant departments, and separative efficiency reaches more than 98%, improves separative efficiency more than 20%.
[comparative example]
The same embodiment of suitable operating mode of common spiral board, be respectively 1900 millimeters of gas-liquid separator diameters, 45 of blade quantities, the spiral board angle of elevation alpha is 30 °, radial angle β is 55 °, and the structure of spiral board is illustrated in figure 4 as tetragonal flat board, and the housing of its A point place and separator welds mutually, compare with spiral board of the present invention, larger gap arranged aspect the impact of performance:
A. common spiral board is not owing to there being face 2, so that blade stiffness is very low, the averga cross section the moment of inertia is 550 millimeters
4, not as good as 1/3 of the inventive example, the averga cross section the moment of inertia of the inventive example can reach 2000 millimeters
4Above.Lower rigidity is so that blade bending in operating process is larger, and each interlobate gap is inconsistent, and is inhomogeneous by interlobate gas speed, affects separating effect.The separative efficiency of common blade does not reach 80% basically, and the spiral board efficient of the inventive example can reach more than 98%.The distortion of blade also can cause larger vibration, produces very large noise;
B. common spiral board is not owing to having face 3, the welding of blade and cylindrical shell to only have the shorter weld length of A point, and the intensity of welding is less, under the effect of air-flow, easily causes the accident of leaf abscission.
C. common spiral board is not owing to there being face 4, the welding edge that is not connected between each blade, and each blade isolates, can not form integral body, the rigidity of spiral board assembly and intensity are all lower, have reduced service life and the separative efficiency of equipment, have affected the stable operation performance of equipment.Common spiral board separator all can overhaul because of blade injury every year, but and spiral board separator stable and continuous of the present invention operates more than 5 years.
Claims (2)
1. gas-liquid separation rotational flow plate is characterized in that:
A) spiral board is by 4 faces, the stereochemical structure that namely is comprised of first surface (1), second (2), the 3rd (3) and fourth face (4);
B) first surface (1) is an irregular pentagon, and second (2) and the 3rd (3) are triangle, and fourth face (4) is one trapezoidal;
C) summit of first surface (1), second (2), the 3rd (3) and (4) four faces of fourth face comes together in 1 A;
Wherein, the length of the long straight flange DE of first surface (1) is D/2sin α, D is the diameter of gas-liquid separator, α is the spiral board elevation angle, and vane tip DC length is 20～30 millimeters, and bottom AE length is 0.14～0.16 times of DE, the spiral board angle of elevation alpha is 30～40 °, radial angle β is 50～60 °, and the length of BC is 0.2～0.25 times of DE, and the length of AB is 0.65～0.75 times of DE;
The 3rd (3) bottom EG is that diameter equals D, angle is the string of 360/n degree, and this face requires the point through A, and n is the number of blade of gas-liquid separator, and the number of blade is that 36～46, AE overlaps with the AE limit of first surface (1), and the length of AG is 0.7～0.8 times of AE;
The length of second (2) bottom AF is 40～60 millimeters, and AB overlaps with the AB of first surface (1), and the length of BF is 0.95～0.98 times of AB, and second (2) are 135 ± 5 ° with the angle of first surface (1);
The limit AF of fourth face (4) overlaps with the AF of second (2) bottom, limit FH is parallel to limit AG, the length of FH is 0.35～0.45 times of AG, AG overlaps with the AG of the 3rd (3), another limit HG joins with adjacent spiral-plate leaf, and the angle between fourth face (4) and the 3rd (3) is 135 ± 5 °.
2. the manufacture method of gas-liquid separation rotational flow plate claimed in claim 1 is characterized in that may further comprise the steps:
1) according to required dimensional parameters, determines the number of degrees of each intersection size and corner cut by the three-dimensional drawing;
2) draw out the expanded view of spiral board;
3) carry out blanking by expanded view;
4) flat board after blanking marks the dotted line of flanging, and dotted line is divided into first surface (1), second (2), the 3rd (3) and fourth face (4) with flat board, then requires to carry out flanging along dotted line and angle;
5) behind the flanging, the AF line of second (2) and fourth face (4) overlaps together, should overlap side weld and connect, and spiral board namely completes.
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| CN 200910197425 CN102039069B (en) | 2009-10-20 | 2009-10-20 | Gas-liquid separation rotational flow plate and manufacturing method thereof |
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| CN102039069B true CN102039069B (en) | 2013-02-27 |
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| CN103191572B (en) * | 2013-04-09 | 2015-08-05 | 湖南百利工程科技股份有限公司 | A kind of film-rising evaporator with spiral board |
| WO2019061097A1 (en) * | 2017-09-27 | 2019-04-04 | 北京中能诺泰节能环保技术有限责任公司 | Dedusting and demisting device and absorption tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080145659A1 (en) * | 2005-01-12 | 2008-06-19 | Dagussa Ag | Pyrogenically produced silicon dioxide powder |
| CN201076803Y (en) * | 2007-07-18 | 2008-06-25 | 刘岗 | Vortex exhaust gas purification tower |
| CN101332397A (en) * | 2008-05-16 | 2008-12-31 | 路林茫 | Large eddy-flow column plate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080145659A1 (en) * | 2005-01-12 | 2008-06-19 | Dagussa Ag | Pyrogenically produced silicon dioxide powder |
| CN201076803Y (en) * | 2007-07-18 | 2008-06-25 | 刘岗 | Vortex exhaust gas purification tower |
| CN101332397A (en) * | 2008-05-16 | 2008-12-31 | 路林茫 | Large eddy-flow column plate |
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| Title |
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| JP特开2008-37735A 2008.02.21 |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: China Petrochemical Group Corp. Applicant after: SINOPEC Ningbo Engineering Company Limited Applicant after: SINOPEC Ningbo Technology Research Institute Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: China Petrochemical Group Corp. Applicant before: Sinopec Ningbo Engineering Co., Ltd. Applicant before: Sinopec Ningbo Institute of Technology |
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