CN103277370A - 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
- CN103277370A CN103277370A CN2013101607801A CN201310160780A CN103277370A CN 103277370 A CN103277370 A CN 103277370A CN 2013101607801 A CN2013101607801 A CN 2013101607801A CN 201310160780 A CN201310160780 A CN 201310160780A CN 103277370 A CN103277370 A CN 103277370A
- Authority
- CN
- China
- Prior art keywords
- liquid
- spiral
- fluid
- spiral baffle
- gas
- 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.)
- Granted
Links
Images
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 that fluid distributes, specifically relate to a kind of devices and methods therefor that the pipeline inner fluid distributes of adjusting.
Background technique
In chemical industry, often use the flow direction that bend pipe changes fluid, thereby finish the conveying of fluid.But owing to be subjected to the centrifugal action of bend pipe, the different densities component in the fluid-mixing can be separated, and the flow pattern of fluid will change a lot, and forms non-stationary flow.When fluid was flowed through elbow, the big pressure of inboard speed of bend pipe was low, the little pressure height of outside speed.The pressure that enters straight length back elbow inboard rises gradually, and the pressure in the outside descends gradually.Need could recover stable flowing state by very long straight-run of pipe by the fluid behind the elbow.If entering into reactor, unsettled fluid will cause very big influence to reaction.Such as in poly condensation mode, gas-liquid separation takes place when connecting the bend pipe of fluidized-bed reactor entrance in gas-liquid mixture, enters to cause behind the reactor localized liquid content few and form focus, finally causes the polymer lumps phenomenon to take place.The fluid of while unsteady flow is the asymmetric reactor that washes away repeatedly, has a strong impact on the life-span of reactor.But the restriction in the actual production because space, length that can not unconfined increase straight length makes fluid recover condition of steady flow, so must a kind of device that can fine adjustment fluid flow pattern of invention, with the length that reduces straight length with avoid unstable fluid to the influence of product and reactor.
Patent CN 102155477 A have proposed a kind of rectifier of adjusting the bend pipe velocity flow profile.The main structure of this rectifier is plectane and along its hole that radially is provided with.These holes are distribution or asymmetrical distribution, namely near the diameter of the diameter outside the bend pipe that is mated less than the close bend pipe inboard that is mated.This rectifier designs the size distribution in hole according to the distribution situation of fluid after by bend pipe, can play certain rectified action.But because a lot of perforates is arranged, can cause very big pressure drop like this, increase the energy consumption that fluid is carried.
Patent CN 102435253 A have proposed a kind of flow conditioner for fluid transmission pipe." pre-rotary vane assembly+rectification part body+pre-rotary vane assembly " adopted in this invention, and the rectifier main body is made up of porous media material.This regulator complex structure is not suitable for carrying secretly in the fluid situation use of small amount of solid particle, results in blockage easily.
The fluid mixed-rectification device that patent US 2011/0174408 A1 proposes is to have the guide plate of perforate to constitute by one.Though this rectifier has good rectification effect to gas, the very big pressure drop of same existence is unfavorable for the conveying of fluid.
To develop into steady flow rapidly and shorten necessary flow development length in order to make through the gas-liquid mixture after the bend pipe, need a kind of device of invention can effectively adjust the flow pattern of gas-liquid, can evenly distribute after making gas-liquid mixture enter follow-up reactor.Reduce unstable fluid the asymmetric of reactor washed away, can not cause very big pressure drop simultaneously and the solid blocking phenomenon takes place.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of present gas-liquid modulating device, a kind of devices and methods therefor that the pipeline inner fluid distributes of adjusting is provided.
Adjusting the device that gas-liquid distributes in the pipeline is: at inner-walls of duct one section spiral baffle is set, the starting point of spiral baffle is positioned at the high side pipe wall of content liquid, and terminal point is positioned at the low side pipe 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 °.
Adjusting the interior gas-liquid location mode of pipeline is: when gas-liquid mixture fluid is flowed through spiral baffle, the sense of rotation of the liquid runs down spiral baffle on the liquid distribution side pipe wall how 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 during less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing during 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, and D is pipe diameter.When liquid mole fraction content less than 10% the time, the angle between spiral baffle and the tube wall face is greater than 30 °, when liquid mole fraction content greater than 10% the time, the angle between spiral baffle and the tube wall face is less than 30 °.
The present invention is simple in structure, is easy to installation and removal, is applicable to the rectification of various gas-liquid mixture fluids, can not result in blockage.Through experiment test, the rectification effect of spiral plate rectifier convection cell is good, and fluid is little by pressure drop that this device back produces, thereby reduces the loss of conveying capacity, can also improve the life-span of various assemblies and reactor behind the pipeline in addition.
Description of drawings
Fig. 1 is the structural representation of adjusting the device of horizontal pipe inner fluid distribution, the flow direction of fluid that arrow refers to;
Fig. 2 is the structural representation of adjusting the device of vertical pipeline inner fluid distribution, the flow direction of fluid that arrow refers to;
Fig. 3 is the structural representation of adjusting the device of bend pipe inner fluid distribution, the flow direction of fluid that arrow refers to.
Embodiment
Adjusting the device that gas-liquid distributes in the pipeline is: at pipeline 1 inwall one section spiral baffle 2 is set, the starting point of spiral baffle is positioned at the high side pipe wall of content liquid, and terminal point is positioned at the low side pipe 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 °.
Adjusting the interior gas-liquid location mode of pipeline is: when gas-liquid mixture fluid is flowed through spiral baffle 2, the sense of rotation of the liquid runs down spiral baffle on the liquid distribution side pipe wall how 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 during less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing during 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, and D is pipe diameter.When liquid mole fraction content less than 10% the time, the angle between spiral baffle and the tube wall face is greater than 30 °, when liquid mole fraction content greater than 10% the time, the angle between spiral baffle and the tube wall face is less than 30 °.
Spiral plate proposed by the invention can use any known material to make, but the material that need match according to concrete process conditions selection.In addition, spiral plate can pass through general means of fixation such as welding, riveted joint and be connected with pipeline, and preferred version is to adopt welding manner to be connected with pipeline.Rectifier provided by the present invention is applicable to gas-liquid two-phase flow in horizontal pipe, vertical tube and the tipping tube and has the flow pattern adjustment of the gas-liquid-solid three phase flow of solid, is specially adapted to through the gas-liquid two-phase flow in the pipeline behind the bend pipe and has the flow pattern adjustment of the gas-liquid-solid three phase flow of solid.
Embodiment 1:
As shown in Figure 1, spiral plate is installed and is used for adjusting ducted gas-liquid distribution in horizontal pipe.Wherein, pipe diameter is 882 mm, and length is 2000 mm; The starting point of spiral plate is positioned at the horizontal pipe bottom that liquid is assembled; Angle α between the line segment of expression spiral plate and the pipe diameter is 25 °; The 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 with respect to fluid flow direction spiral forward counterclockwise, and rotating cycle is 2.5 circles.Experimentize as simulation medium with empty G﹠W, gas flow rate is 12 m/s, and the mole fraction of water is 8%.When spiral plate was not installed, the pressure drop between entrance and the outlet was 1060 Pa, and the coefficient of variation of liquid hold-up is 16.7% on the pipe outlet cross section; After spiral plate was installed, the pressure drop between entrance and the outlet was 1090 Pa, and the coefficient of variation of liquid hold-up is 5.8% on the pipe outlet cross section.Wherein, the coefficient of variation is defined as the standard deviation of liquid hold-up on the outlet and the ratio of mean value, has reflected the dispersion degree that liquid hold-up distributes on the cross section.The coefficient of variation is more big, shows that liquid hold-up distributes more inhomogeneous on the cross section; The coefficient of variation is more little, and it is more even to show that then liquid hold-up distributes.Experimental result shows that spiral plate can significantly improve the uniformity that gas-liquid distributes in the pipeline when slightly increasing horizontal pipe import and export pressure drop.
Embodiment 2:
As shown in Figure 2, spiral plate is installed and is used for adjusting ducted gas-liquid distribution in vertical pipeline.Wherein, pipe diameter is 882 mm, and length is 2000 mm; The starting point of spiral plate is positioned on the side pipe wall of liquid gathering; Angle α between the line segment of expression spiral plate and the pipe diameter is 30 °; The spiral plate width W is 50 mm, and the angle theta between the face at place and tube wall face is 60 °; Spiral plate with respect to the fluid flow direction clockwise direction before spiral, rotating cycle be 1.5 the circle.Experimentize as simulation medium with empty G﹠W, gas flow rate is 12 m/s, and the mole fraction of water is 8%.When spiral plate was not installed, the pressure drop between entrance and the outlet was 1140 Pa, and the coefficient of variation of liquid hold-up is 16.3% on the pipe outlet cross section; After spiral plate was installed, the pressure drop between entrance and the outlet was 1165 Pa, and the coefficient of variation of liquid hold-up is 4.3% on the pipe outlet cross section.Experimental result shows that spiral plate can significantly improve the uniformity that gas-liquid distributes in the pipeline when slightly increasing vertical pipeline import and export pressure drop.
Embodiment 3:
As shown in Figure 3, spiral plate is installed in the vertical pipeline behind elbow and is used for adjusting ducted gas-liquid distribution.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 the vertical tube outside that the elbow downstream liquid is assembled; Angle α between the line segment of expression spiral plate and the pipe diameter is 45 °; The spiral plate width W is 45 mm, and the angle theta between the face at place and tube wall face is 30 °; Spiral plate with respect to the fluid flow direction clockwise direction before spiral, rotating cycle be 1.5 the circle.Experimentize as simulation medium with empty G﹠W, gas flow rate is 14 m/s, and the mole fraction of water is 10%.When spiral plate was not installed, the pressure drop between entrance and the outlet was 1725 Pa, and the coefficient of variation of liquid hold-up is 16.5% on the pipe outlet cross section; After spiral plate was installed, the pressure drop between entrance and the outlet was 1760 Pa, and the coefficient of variation of liquid hold-up is 6.2% on the pipe outlet cross section.Experimental result shows, spiral plate can significantly improve the uniformity that gas-liquid distributes in the vertical pipeline behind the bend pipe when slightly increasing pipeline and importing and exporting pressure drop.
Claims (6)
1. adjust the device that gas-liquid distributes in the pipeline for one kind, it is characterized in that: at pipeline (1) inwall one section spiral baffle (2) is set, the starting point of spiral baffle is positioned at the high side pipe wall of content liquid, and terminal point is positioned at the low side pipe 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. a kind of device that gas-liquid distributes in the pipeline of adjusting according to claim 1, it is characterized in that: the pitch angle alpha will of described spiral baffle (2) is 5 °～85 °.
3. a kind of device that gas-liquid distributes in the pipeline of adjusting according to claim 1, it is characterized in that: the width W of described spiral baffle (2) is 0.05D～0.3D.
4. a kind of device that gas-liquid distributes in the pipeline of adjusting according to claim 1, it is characterized in that: the spiral number of turns of described spiral baffle (2) is 0.5～3 circle.
5. a kind of device that gas-liquid distributes in the pipeline of adjusting according to claim 1, it is characterized in that: the angle between described spiral baffle and tube wall face is 30 °～60 °.
6. gas-liquid location mode in the adjustment pipeline that installs according to claim 1 of a use, it is characterized in that: when gas-liquid mixture fluid is flowed through spiral baffle (2), the sense of rotation of the liquid runs down spiral baffle on the liquid distribution side pipe wall how 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 during less than 20m/s, the spiral angle of spiral baffle is greater than 45 °, when the flow velocity of fluid-mixing during 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 less than 10% the time, angle between spiral baffle and the tube wall face is greater than 30 °, when liquid mole fraction content greater than 10% the time, the angle between spiral baffle and the tube wall face is less than 30 °.
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 true CN103277370A (en) | 2013-09-04 |
| CN103277370B 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) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487367A (en) * | 2013-10-11 | 2014-01-01 | 广东石油化工学院 | Gas corrosion characteristic testing apparatus |
| CN104006042A (en) * | 2014-06-10 | 2014-08-27 | 东南大学 | Flow guiding pipeline guiding fluid to spirally go forwards |
| CN104148196A (en) * | 2014-08-02 | 2014-11-19 | 中国石油大学(华东) | Inlet rectifying device of gas-liquid cylindrical cyclone |
| 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 |
| CN113188953A (en) * | 2021-04-30 | 2021-07-30 | 中国石油大学(北京) | Device for simulating flow of oil-gas-water mixture in elbow pipe under high temperature and high pressure |
| CN113586830A (en) * | 2021-08-05 | 2021-11-02 | 中海油安全技术服务有限公司 | Three way connection with water conservancy diversion 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3719207A (en) * | 1969-11-13 | 1973-03-06 | Fuji Photo Film Co Ltd | Apparatus for transporting fluid |
| US4452956A (en) * | 1979-11-09 | 1984-06-05 | Union Carbide Corporation | Discrete spiral flow imparting device |
| CN101498547A (en) * | 2009-03-04 | 2009-08-05 | 中国化学工程股份有限公司 | Drying tube with spirally-guiding blades and tube bundle |
| 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 |
| CN102435253A (en) * | 2011-11-18 | 2012-05-02 | 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
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3719207A (en) * | 1969-11-13 | 1973-03-06 | Fuji Photo Film Co Ltd | Apparatus for transporting 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 |
| CN101498547A (en) * | 2009-03-04 | 2009-08-05 | 中国化学工程股份有限公司 | Drying tube with spirally-guiding blades and tube bundle |
| CN102435253A (en) * | 2011-11-18 | 2012-05-02 | 中国科学院电工研究所 | Flow adjusting device for fluid conveying pipeline |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487367A (en) * | 2013-10-11 | 2014-01-01 | 广东石油化工学院 | Gas corrosion characteristic testing apparatus |
| CN104006042A (en) * | 2014-06-10 | 2014-08-27 | 东南大学 | Flow guiding pipeline guiding fluid to spirally go forwards |
| CN104148196A (en) * | 2014-08-02 | 2014-11-19 | 中国石油大学(华东) | Inlet rectifying device of gas-liquid cylindrical cyclone |
| 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 |
| CN113188953A (en) * | 2021-04-30 | 2021-07-30 | 中国石油大学(北京) | Device for simulating flow of oil-gas-water mixture in elbow pipe under high temperature and high pressure |
| 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 |
| CN113586830A (en) * | 2021-08-05 | 2021-11-02 | 中海油安全技术服务有限公司 | Three way connection with water conservancy diversion 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277370B (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277370B (en) | Device for adjusting fluid distribution in pipeline and method thereof | |
| CN203724816U (en) | Gas-liquid separator | |
| EP2883601B1 (en) | Fluid mixing device | |
| CN104958934B (en) | A kind of cohesion formula foaming water discharge agitator | |
| CN105067049A (en) | Differential pressure type flow measuring device based on rotational flow principle and method | |
| CN204933069U (en) | A kind of vortex tube gas-liquid separator | |
| CN101839395A (en) | Gas-liquid two-phase flow uniform distribution device | |
| CN105148625B (en) | Vortex tubular gas-liquid separator | |
| CN101402004A (en) | Gas-liquid diphasic fluid distributor | |
| CN102435233B (en) | Vertical spiral wing type water metering device | |
| CN101837268B (en) | Gas circulation distributor | |
| Liu et al. | Effects of Swirl on Flow Patterns and Liquid Unloading of Gas–Liquid Two-Phase Vertical Flow under Stagnant Conditions | |
| CN2935097Y (en) | Slotted orifice plate for multiphase metering device | |
| CN102698625A (en) | High-pressure rotational flow mixing device | |
| Hao et al. | Development, simulation, and laboratory test of novel gas-solid-liquid separator for UASB/EGSB reactor of wastewater treatment | |
| CN202301296U (en) | Spiral flow generating device for pipeline | |
| CN207102373U (en) | Flow mixer and there is its tube assembly | |
| CN203823341U (en) | Liquid splash prevention apparatus | |
| CN202001765U (en) | Flow rate adjuster for bent pipe | |
| CN202410627U (en) | Cycloolefin hydration reactor | |
| CN103406039A (en) | Spiral eddy mixing system | |
| CN209423569U (en) | Gas-liquid mixed distributor, gas-liquid distribution tray and hydrogenator | |
| CN111706579B (en) | Flow regulator suitable for regulating fluid flow velocity distribution at rear end of bent pipe | |
| CN106693449A (en) | Degasser | |
| CN206369373U (en) | Refrigeration system and its knockout |
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 |