CN103277370B - Device for adjusting fluid distribution in pipeline and method thereof - Google Patents
Device for adjusting fluid distribution in pipeline and method thereof Download PDFInfo
- Publication number
- CN103277370B CN103277370B CN201310160780.1A CN201310160780A CN103277370B CN 103277370 B CN103277370 B CN 103277370B CN 201310160780 A CN201310160780 A CN 201310160780A CN 103277370 B CN103277370 B CN 103277370B
- Authority
- CN
- China
- Prior art keywords
- spiral
- liquid
- fluid
- gas
- spiral baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a device for adjusting fluid distribution in a pipeline and a method thereof. When gas-fluid mixed fluid flows through a spiral blocking plate, fluid on one side, where more fluid is distributed, of the pipe wall can move to one side where the fluid content is low in the rotation direction of the spiral blocking plate. Meanwhile, the spiral blocking plate can enable the flow speed of the gas-fluid mixed fluid to increase to improve mixing of gas and fluid. When the flow speed of mixed fluid is smaller than 20m/s, a spiral angle of the spiral blocking plate is larger than 45 degrees. When the flow speed of the mixed fluid is larger than 20m/s, the spiral angle of the spiral blocking plate is smaller than 45 degrees. The turn number n is equal to L/(tan alpha . D) - 2, the alpha is the spiral angle of the spiral blocking plate, and the D is the pipeline diameter. The device is excellent in rectification effect of fluid, suitable for rectifying various kinds of fluid, avoids blockage, prolongs service life of various assemblies and reactors after pipes are bent, is small in pressure drop, reduces conveying energy consumption, and meanwhile is simple in structure and easy to install and dismount.
Description
Technical field
The present invention relates to the regulating device of fluid distrbution, specifically relate to a kind of devices and methods therefor adjusting fluids within pipes distribution.
Background technique
In chemical industry, often can carry out the flow direction of alter with bend pipe, thus complete the conveying of fluid.But due to the centrifugal action by bend pipe, the different densities component in fluid-mixing can be separated, and the flow pattern of fluid will change a lot, form non-stationary flow.When fluid flows through elbow, the large pressure of inner side speed of bend pipe is low, and speed little pressure in outside is high.The pressure entered inside straight length back elbow rises gradually, and the pressure in outside declines gradually.Need could recover stable flowing state by very long straight-run of pipe by the fluid after elbow.If the fluid of instability enters into reactor will cause very large impact to reaction.Such as in poly condensation mode, there is gas-liquid separation when gas-liquid mixture passes through the bend pipe connecting fluidized-bed reactor entrance, localized liquid content can be caused after entering reactor few and form focus, finally causing polymer lumps phenomenon to occur.The fluid of unsteady flow is repeatedly asymmetric simultaneously washes away reactor, has a strong impact on the life-span of reactor.But due to the restriction in space in actual production, can not the length of unconfined increase straight length fluid be made to recover condition of steady flow, so a kind of device that can adjust liquid flow pattern very well must be invented, to reduce the length of straight length and to avoid unstable fluid on the impact of product and reactor.
Patent CN 102155477 A proposes a kind of rectifier adjusting bend pipe flow rate distribution.The hole that the major constituents of this rectifier is plectane and is radially provided with.These some holes right and wrong are symmetrical, and the diameter namely outside the bend pipe be mated is less than the diameter inside the bend pipe be mated.This rectifier designs the size distribution in hole by the distribution situation after bend pipe according to fluid, can play certain rectified action.But owing to there being a lot of perforates, very large pressure drop can be caused like this, increase the energy consumption of fluid conveying.
Patent CN 102435253 A proposes a kind of flow conditioner for fluid transmission pipe.This invention adopts " pre-rotary vane assembly+rectifying component body+pre-rotary vane assembly ", and rectifier main body is made up of porous media material.This regulator complex structure, the situation being not suitable for carrying secretly in fluid a small amount of solid particle uses, and easily results in blockage.
The fluid chemical field rectifier that patent US 2011/0174408 A1 proposes has the guide plate of perforate to form by one.Although this rectifier has good rectification effect to gas, same exist very large pressure drop, is unfavorable for the conveying of fluid.
Shortening necessary flow development length in order to make the gas-liquid mixture after bend pipe develop into steady flow rapidly, needing to invent the flow pattern that a kind of device effectively can adjust gas-liquid, can be uniformly distributed after making gas-liquid mixture enter follow-up reactor.Reduce unstable fluid to wash away the asymmetric of reactor, very large pressure drop can not be caused simultaneously and solid blocking phenomenon occurs.
Summary of the invention
The object of the invention is the deficiency in order to overcome current gas-liquid modulating device, a kind of devices and methods therefor adjusting fluids within pipes distribution is provided.
In adjustment pipeline, the device of gas-liquid distribution is: on inner-walls of duct, arrange one section of spiral baffle, the starting point of spiral baffle is positioned at the high side tube wall of content liquid, and terminal is positioned at the low side tube wall of content liquid; The pitch angle alpha will of described spiral baffle is 1 ° ~ 90 °, and the width W of spiral baffle is 0.01D ~ 0.5D, and wherein D is the diameter of pipeline, and the spiral number of turns of spiral baffle is 0.1 ~ 100 circle, and the angle between spiral baffle and tube wall face is 1 ° ~ 90 °.
The pitch angle alpha will of described spiral baffle is preferably 5 ° ~ 85 °.The width W of spiral baffle is preferably 0.05D ~ 0.3D.The spiral number of turns of spiral baffle is preferably 0.5 ~ 3 circle.Angle between spiral baffle and tube wall face is preferably 30 ° ~ 60 °.
In adjustment pipeline, gas-liquid location mode is: when gas-liquid mixture fluid flows through spiral baffle, the sense of rotation of the liquid runs down spiral baffle on the side tube wall that liquid distribution is many moves to the few side of content liquid, spiral baffle can make the flow velocity of gas-liquid mixture fluid increase simultaneously, promote the mixing of gas-liquid, when the flow velocity of fluid-mixing is less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing is greater than 20m/s, the spiral angle of spiral baffle is less than 45 °, number of turns n=L/(tan α D)-2, α is the helix angle of spiral baffle, D is pipe diameter.When liquid mole fraction content is less than 10%, the angle between spiral baffle and tube wall face is greater than 30 °, and when liquid mole fraction content is greater than 10%, the angle between spiral baffle and tube wall face is less than 30 °.
Structure of the present invention is simple, is easy to installation and removal, is applicable to the rectification of various gas-liquid mixture fluid, can not results in blockage.Through experiment test, the rectification effect of spiral plate rectifier convection cell is good, and fluid is little by the pressure drop produced after this device, thus reduces the loss of conveying capacity, can also improve the life-span of various assembly and reactor after pipeline in addition.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of adjustment horizontal pipe inner fluid distribution, arrow refer to the flow direction of fluid;
Fig. 2 is the structural representation of the device of adjustment vertical pipeline inner fluid distribution, arrow refer to the flow direction of fluid;
Fig. 3 is the structural representation of the device of adjustment bend pipe inner fluid distribution, arrow refer to the flow direction of fluid.
Embodiment
In adjustment pipeline, the device of gas-liquid distribution is: on pipeline 1 inwall, arrange one section of spiral baffle 2, the starting point of spiral baffle is positioned at the high side tube wall of content liquid, and terminal is positioned at the low side tube wall of content liquid; The pitch angle alpha will of described spiral baffle is 1 ° ~ 90 °, and the width W of spiral baffle is 0.01D ~ 0.5D, and wherein D is the diameter of pipeline, and the spiral number of turns of spiral baffle is 0.1 ~ 100 circle, and the angle between spiral baffle and tube wall face is 1 ° ~ 90 °.
The pitch angle alpha will of described spiral baffle 2 is preferably 5 ° ~ 85 °.The width W of spiral baffle 2 is preferably 0.05D ~ 0.3D.The spiral number of turns of spiral baffle 2 is preferably 0.5 ~ 3 circle.Angle between spiral baffle 2 and tube wall face is preferably 30 ° ~ 60 °.
In adjustment pipeline, gas-liquid location mode is: when gas-liquid mixture fluid flows through spiral baffle 2, the sense of rotation of the liquid runs down spiral baffle on the side tube wall that liquid distribution is many moves to the few side of content liquid, spiral baffle can make the flow velocity of gas-liquid mixture fluid increase simultaneously, promote the mixing of gas-liquid, when the flow velocity of fluid-mixing is less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing is greater than 20m/s, the spiral angle of spiral baffle is less than 45 °, number of turns n=L/(tan α D)-2, α is the helix angle of spiral baffle, D is pipe diameter.When liquid mole fraction content is less than 10%, the angle between spiral baffle and tube wall face is greater than 30 °, and when liquid mole fraction content is greater than 10%, the angle between spiral baffle and tube wall face is less than 30 °.
Spiral plate proposed by the invention can use material known arbitrarily to manufacture, but needs to select according to concrete process conditions the material that matches.In addition, spiral plate can be connected with pipeline by general means of fixation such as welding, riveted joints, and preferred version adopts welding manner to be connected with pipeline.Rectifier provided by the present invention is applicable to gas-liquid two-phase flow and the flow pattern with the gas-liquid-solid three phase flow of solid in horizontal pipe, vertical tube and tipping tube and adjusts, and is specially adapted to the gas-liquid two-phase flow in the pipeline after bend pipe and adjusts with the flow pattern of the gas-liquid-solid three phase flow of solid.
Embodiment 1:
As shown in Figure 1, spiral plate is installed in horizontal pipe for adjusting the distribution of ducted gas-liquid.Wherein, pipe diameter is 882 mm, and length is 2000 mm; The starting point of spiral plate is positioned at the horizontal pipe bottom of liquid accumulation; Represent that the angle α between the line segment of spiral plate and pipe diameter is 25 °; Spiral plate width W is 50 mm, and the angle theta between the face at place and tube wall face is 45 °; Spiral plate is relative to the counterclockwise spiral forward of fluid flow direction, and rotating cycle is 2.5 circles.Test using air and water as simulation medium, gas flow rate is 12 m/s, and the mole fraction of water is 8%.When not installing spiral plate, the pressure drop between entrance and outlet is 1060 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 16.7%; After installing spiral plate, the pressure drop between entrance and outlet is 1090 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 5.8%.Wherein, the coefficient of variation is defined as the standard deviation of liquid hold-up and the ratio of mean value on outlet, reflects the dispersion degree of liquid hold-up distribution on cross section.The coefficient of variation is larger, shows that on cross section, liquid hold-up distribution is more uneven; The coefficient of variation is less, then show that liquid hold-up distribution is more even.Experimental result shows, spiral plate, while slightly increasing horizontal pipe import and export pressure drop, significantly can improve the uniformity of gas-liquid distribution in pipeline.
Embodiment 2:
As shown in Figure 2, spiral plate is installed in vertical pipeline for adjusting the distribution of ducted gas-liquid.Wherein, pipe diameter is 882 mm, and length is 2000 mm; The starting point of spiral plate is positioned on the side tube wall of liquid accumulation; Represent that the angle α between the line segment of spiral plate and pipe diameter is 30 °; Spiral plate width W is 50 mm, and the angle theta between the face at place and tube wall face is 60 °; Spiral plate is relative to spiral before fluid flow direction clockwise direction, and rotating cycle is 1.5 circles.Test using air and water as simulation medium, gas flow rate is 12 m/s, and the mole fraction of water is 8%.When not installing spiral plate, the pressure drop between entrance and outlet is 1140 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 16.3%; After installing spiral plate, the pressure drop between entrance and outlet is 1165 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 4.3%.Experimental result shows, spiral plate, while slightly increasing vertical pipeline import and export pressure drop, significantly can improve the uniformity of gas-liquid distribution in pipeline.
Embodiment 3:
As shown in Figure 3, spiral plate is installed for adjusting the distribution of ducted gas-liquid in the vertical pipeline after elbow.Wherein, pipe diameter is 882 mm, and horizontal pipe length is 1000 mm, and vertical pipeline length is 2000 mm, and elbow is 90 ° of elbows of standard.The starting point of spiral plate is positioned at outside the vertical tube of elbow downstream liquid gathering; Represent that the angle α between the line segment of spiral plate and pipe diameter is 45 °; Spiral plate width W is 45 mm, and the angle theta between the face at place and tube wall face is 30 °; Spiral plate is relative to spiral before fluid flow direction clockwise direction, and rotating cycle is 1.5 circles.Test using air and water as simulation medium, gas flow rate is 14 m/s, and the mole fraction of water is 10%.When not installing spiral plate, the pressure drop between entrance and outlet is 1725 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 16.5%; After installing spiral plate, the pressure drop between entrance and outlet is 1760 Pa, and on pipe outlet cross section, the coefficient of variation of liquid hold-up is 6.2%.Experimental result shows, spiral plate is slightly increasing while pipeline imports and exports pressure drop, significantly can improve the uniformity of gas-liquid distribution in vertical pipeline after bend pipe.
Claims (5)
1. gas-liquid location mode in an adjustment pipeline, it is characterized in that: when gas-liquid mixture fluid flows through spiral baffle (2) in the device of gas-liquid distribution in adjustment pipeline, the sense of rotation of the liquid runs down spiral baffle on the side tube wall that liquid distribution is many moves to the few side of content liquid, spiral baffle can make the flow velocity of gas-liquid mixture fluid increase simultaneously, promote the mixing of gas-liquid, when the flow velocity of fluid-mixing is less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing is greater than 20m/s, the spiral angle of spiral baffle is less than 45 °, number of turns n=L/(tan α D)-2, α is the helix angle of spiral baffle, D is pipe diameter, L is duct length, when liquid mole fraction content is less than 10%, angle between spiral baffle and tube wall face is greater than 30 °, when liquid mole fraction content is greater than 10%, angle between spiral baffle and tube wall face is less than 30 °, in described adjustment pipeline, the device of gas-liquid distribution is: on pipeline (1) inwall, arrange one section of spiral baffle (2), the starting point of spiral baffle is positioned at the high side tube wall of content liquid, and terminal is positioned at the low side tube wall of content liquid, the pitch angle alpha will of described spiral baffle is 1 ° ~ 90 °, and the width W of spiral baffle is 0.01D ~ 0.5D, and wherein D is the diameter of pipeline, and the spiral number of turns of spiral baffle is 0.1 ~ 100 circle, and the angle between spiral baffle and tube wall face is 1 ° ~ 90 °.
2. gas-liquid location mode in one adjustment pipeline according to claim 1, is characterized in that: the pitch angle alpha will of described spiral baffle (2) is 5 ° ~ 85 °.
3. gas-liquid location mode in one adjustment pipeline according to claim 1, is characterized in that: the width W of described spiral baffle (2) is 0.05D ~ 0.3D.
4. gas-liquid location mode in one adjustment pipeline according to claim 1, is characterized in that: the spiral number of turns of described spiral baffle (2) is 0.5 ~ 3 circle.
5. gas-liquid location mode in one adjustment pipeline according to claim 1, is characterized in that: the angle between described spiral baffle and tube wall face is 30 ° ~ 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160780.1A CN103277370B (en) | 2013-05-03 | 2013-05-03 | Device for adjusting fluid distribution in pipeline and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160780.1A CN103277370B (en) | 2013-05-03 | 2013-05-03 | Device for adjusting fluid distribution in pipeline and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277370A CN103277370A (en) | 2013-09-04 |
| CN103277370B true CN103277370B (en) | 2015-05-27 |
Family
ID=49059969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310160780.1A Active CN103277370B (en) | 2013-05-03 | 2013-05-03 | Device for adjusting fluid distribution in pipeline and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277370B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487367B (en) * | 2013-10-11 | 2015-10-21 | 广东石油化工学院 | A kind of gas attack characteristic test device |
| CN104006042B (en) * | 2014-06-10 | 2016-05-18 | 东南大学 | A kind of conduction pipe that guides fluid precession |
| CN104148196B (en) * | 2014-08-02 | 2016-06-08 | 中国石油大学(华东) | A kind of column gas-liquid cyclone separator entrance fairing |
| CN104235548A (en) * | 2014-08-29 | 2014-12-24 | 无锡金顶石油管材配件制造有限公司 | Pipeline |
| CN106194911A (en) * | 2016-07-07 | 2016-12-07 | 安庆宜源石油机械配件制造有限责任公司 | Oil flow-aiding device in pipeline |
| CN113188953B (en) * | 2021-04-30 | 2023-10-03 | 中国石油大学(北京) | Device for simulating flow of oil-gas-water mixture at high temperature and high pressure in bent pipe |
| CN113586830B (en) * | 2021-08-05 | 2023-11-24 | 中海油安全技术服务有限公司 | Three-way joint with flow guiding structure |
| CN114100398A (en) * | 2021-11-11 | 2022-03-01 | 北京中科诚毅科技发展有限公司 | Equipment and method for preventing coal dust deposition in pipeline transportation of oil coal slurry |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE758739A (en) * | 1969-11-13 | 1971-04-16 | Fuji Photo Film Co Ltd | METHOD AND APPARATUS FOR TRANSPORTING A FLUID |
| US4452956A (en) * | 1979-11-09 | 1984-06-05 | Union Carbide Corporation | Discrete spiral flow imparting device |
| CN201318352Y (en) * | 2008-11-19 | 2009-09-30 | 廊坊燕北畜牧机械集团有限公司 | Pipeline for conveying liquid feed |
| CN101498547B (en) * | 2009-03-04 | 2010-09-29 | 中国化学工程股份有限公司 | Drying tube with spirally-guiding blades and tube bundle |
| CN102435253B (en) * | 2011-11-18 | 2013-01-30 | 中国科学院电工研究所 | Flow adjusting device for fluid conveying pipeline |
-
2013
- 2013-05-03 CN CN201310160780.1A patent/CN103277370B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277370A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277370B (en) | Device for adjusting fluid distribution in pipeline and method thereof | |
| CN203303695U (en) | Oil-gas mixture transportation separation flow divider | |
| CN103301958B (en) | Gas-liquid separation apparatus | |
| CN204933069U (en) | A kind of vortex tube gas-liquid separator | |
| CN102251765A (en) | Axial type inlet oil-water cyclone separator | |
| CN101837268B (en) | Gas circulation distributor | |
| CN111322036B (en) | Gas well self-adaptive flow control water device and design method thereof | |
| CN103111207B (en) | Square emulsion preparing device | |
| CN207102373U (en) | Flow mixer and there is its tube assembly | |
| CN202141368U (en) | Flute flow-equalizing device with improved hole layout | |
| CN202733198U (en) | Pipeline | |
| CN203906457U (en) | Fluid spiral vortex generator | |
| CN111706579B (en) | Flow regulator suitable for regulating fluid flow velocity distribution at rear end of bent pipe | |
| CN103406039A (en) | Spiral eddy mixing system | |
| CN203823341U (en) | Liquid splash prevention apparatus | |
| CN204910903U (en) | Take whirl dirt separator of gas -liquid separation function | |
| CN113083526A (en) | Oil-gas-water separation equipment | |
| CN103395742B (en) | New water carbon ratio control device | |
| CN106693449A (en) | Degasser | |
| CN102240526B (en) | Gas lift type liquid distributor and reactor inner part | |
| CN111649033A (en) | Pipeline based on boundary vortex string drag reduction and application thereof | |
| CN102155477A (en) | Rectifier for regulating velocity distribution of elbow pipe | |
| CN207470531U (en) | A kind of flow conditioner for adjusting the distribution of bend pipe gas flow rate | |
| CN206121237U (en) | Half open pipe guide vanes formula gas -liquid pre -separation device | |
| CN205383929U (en) | Vortex wave current generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |