CN105424391A - Experiment system and method for improving pipeline transportation efficiency of gas - Google Patents
Experiment system and method for improving pipeline transportation efficiency of gas Download PDFInfo
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- CN105424391A CN105424391A CN201510796687.9A CN201510796687A CN105424391A CN 105424391 A CN105424391 A CN 105424391A CN 201510796687 A CN201510796687 A CN 201510796687A CN 105424391 A CN105424391 A CN 105424391A
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- pipeline
- gas
- defeated
- defeated equipment
- transportation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
Abstract
The invention provides an experiment system and a method for improving the pipeline transportation efficiency of gas. The system and the method are based on the mechanical transmission tribology principle. When gas passes through pipeline transportation-increasing equipment with a self-excited oscillation pulsed effect, transportation of the gas in the pipeline is transformed from continuous 'sliding friction' transportation to pulse fluctuation 'rolling friction' transportation. Thus, the drag reduction rate and transportation increase rate of gas pipeline transportation are improved, and the pipeline transportation efficiency of gas is improved. The system and the method overcome the bottleneck that the existing gas pipeline drag reduction and transportation increase is confined to theoretical and empirical research, lays an experiment foundation for developing novel drag reduction and transportation increase theories and drag reduction and transportation increase equipment design methods, and are of great significance to reducing the construction cost of transportation pipelines and ensuring the operation safety of pipelines.
Description
Technical field
The present invention is mechanical engineering technical field, is specifically related to a kind of experimental system for improving gas pipeline transfer efficiency and method.
Background technology
At present, the major way of gas transport is Cemented filling, and for the displacement improving pipeline, it is high that conventional method all has construction cost, and construction is difficult, the shortcomings such as drag-reduction effect is undesirable.There is according to self-excited oscillation pulsed water jet the feature of boundary condition special in larger transformation characteristic and oscillation chamber, when not changing pipe diameter, pipeline increases defeated equipment and greatly can increase displacement, the long distance that it can be widely used in the gas such as coal gas, blast furnace steam, rock gas of metallurgy industry transports, and reduces energy consumption.Improving the inexorable trend that gas pipeline transfer efficiency is gas pipeline conveying development, is also the important symbol of conveyance conduit technical progress, and it is significant to reduction conveyance conduit construction cost, guarantee conduit running safety.
Name is called " a kind of natural gas line drag reduction internal coating method of determination and evaluation and equipment " (China Patent No. ZL201310072561.8) patented technology, this technology comprises sets up a kind of method can evaluating drag-reducing coating duty status influence factor in in-service natural gas line, the person that makes pipeline management has internally coated military service performance state and to be clearlyer familiar with accurately, and the clear major influence factors affecting internal coating duty status, avoid the large effect trend of inwall drag-reducing coating to worsen, thus reach the effect extending the inwall drag-reducing coating life-span." in liquid medium, there is synergy, the Dynamic Coupling bionic functional surface of anti-drag function " (patent No. ZL201210038948.7) patented technology, this technology comprises one and have synergy in liquid medium, the Dynamic Coupling bionic functional surface of anti-drag function, this Dynamic Coupling bionic functional surface is made up of with hard substrate layer soft formation surface, hard substrate layer is processed with bionic, non-smooth structure, soft formation superficial layer is macromolecule composite elastic film, utilize the elastic deformation on high molecular polymer surface and macromolecule composite elastic film surface to be coupled with the bionic, non-smooth form above base material and Dynamic controlling is carried out to liquid medium, thus achieve the synergy of gas machinery.
Although above provide a kind of natural gas line drag reduction internal coating, long distance pipeline drag reduction increase transmission method higher at conduit running initial stage drag reducing efficiency, increase defeated successful, the duration is not long, can only remain valid within a couple of days.At present, increase defeated equipment drag reduction for gas pipeline and increase defeated efficiency, basic dependence experience and theoretical research, do not provide effective experimental system and method for designing.
Summary of the invention
Technical matters to be solved by this invention are to provide a kind of experimental system for improving gas pipeline transfer efficiency and method, this system has energy-conserving and environment-protective, construction cost is low, the feature of easy construction, the defeated bottleneck being confined to theory and empirical studies is increased for overcoming existing pipeline drag reduction, increase the method for designing etc. that opinion in the wrong and drag reduction increase defeated equipment established experiment basis for expanding Novel drag reduction, and to reduction conveyance conduit construction cost with ensure that conduit running safety is significant.
Technical scheme of the present invention is achieved in that
A kind of experimental system for improving gas pipeline transfer efficiency, air compressor (1) is communicated with buffer tank (2) left upper end, buffer tank (2) right-hand member is connected with admission line (6), main valve (3), electromagnetic pneumatic variable valve (4) and flowmeter (5) are arranged on admission line (6) successively, and the end of described admission line (6) is installed and increased defeated confirmatory experiment pipeline or drag reduction confirmatory experiment pipeline;
Described increasing defeated confirmatory experiment pipeline comprises pipe (61) of setting out on a journey, lower road pipe (62), solenoid directional control valve (9), vialog (7) and increases defeated equipment (8), the end of described admission line (6) is equipped with solenoid directional control valve (9), the outlet side of solenoid directional control valve (9) installs set out on a journey pipe (61) and lower road pipe (62) respectively, flowmeter installed by described pipe (61) of setting out on a journey, lower road pipe (62) is installed successively and is increased defeated equipment (8) and flowmeter, and vialog (7) is connected with the defeated equipment of increasing (8);
Described drag reduction confirmatory experiment pipeline comprises flexible pipe (11), shaking table (10), pipe ends on described shaking table (10) is the first connecting hose (11) and the second flexible pipe (12) respectively, described first connecting hose (11) connects admission line (6), and described second flexible pipe (12) connects the pipeline with flowmeter.
Preferably, the defeated equipment of described increasing (8) structure mainly comprises upstream nozzle and the downstream nozzle of cavity and center, cavity rear and front end aligning, the anticollision wall of the tapered inclination of described downstream nozzle surrounding, the long L of cavity, cavity diameter DT, upstream nozzle diameter d 1, downstream nozzle diameter d 2, the tilt angle alpha of anticollision wall.
For a method for the experimental system of above-mentioned raising gas pipeline transfer efficiency, comprise the following steps:
Increase defeated equipment and defeated confirmatory experiment increased to Cemented filling:
Step S101: measure routine and do not install the correlative flow, the pressure data that increase defeated equipment pipeline, air compressor is pressed into gas to pipeline, gas is through the voltage stabilizing Unloading Effect of buffer tank, and guaranteeing that gas flows into main valve is continuous stream, is regulated flow into reversal valve uninterrupted by electromagnetic pneumatic variable valve;
Step S102: adjustable change valve makes gas by upper pipeline, measures the origin or beginning flow Q flowing into reversal valve respectively by flowmeter
0with origin or beginning pressure P
0and the end flow Q after a segment pipe
1with terminal pressure P
1;
Step S103: measure correlative flow, the pressure data of lower pipeline installed and increase defeated equipment pipeline, keeps other conditions and routine not to install increasing defeated equipment pipeline identical;
Step S104: adjustable change valve makes gas by lower pipeline, is measured respectively by flowmeter and flows into reversal valve and the end flow Q of equal length pipeline after increasing defeated equipment unsteady flow
dRwith terminal pressure P
dR, utilize vialog to measure simultaneously and increase defeated equipment vibration frequency F operationally
dR;
Step S105: at interval of half an hour, repeats step S101---S104, measures 8 groups of data, and record;
Increase defeated equipment to duct wall surface vibration drag reduction confirmatory experiment:
Step S201: keep other conditions and routine not to install increasing defeated equipment pipeline identical.
Step S202: regulate shaking table, makes to carry out Research on Shaking Table for Simulating and vialog and measures and increase defeated equipment vibration frequency F operationally
0identical, the end flow Q of equal length pipeline after unsteady flow is measured respectively by flowmeter
fwith terminal pressure pressure P
f, at interval of half an hour, measure 8 groups of data, and record;
Correlation computations is as follows:
(1) computing formula of defeated rate is increased:
T
I＝[(Q
DR–Q
0)/Q
DR]×100％
T
i: increase defeated rate;
Q
0: routine does not install the origin or beginning flow increasing defeated equipment pipeline;
Q
dR: the end flow increasing defeated equipment pipeline is installed.
(2) computing formula of drag reducing efficiency:
DR＝[(ΔP
0–ΔP
DR)/ΔP
0]×100％
DR: drag reducing efficiency;
Δ P
0: routine is not installed and is increased the loss of defeated equipment pressure-drop in pipeline, Δ P
0=P
0– P
1,
Wherein P
0: experiment pipeline origin or beginning pressure, P
1: experiment pipeline terminal pressure;
Δ P
dR: install and increase the loss of defeated equipment pressure-drop in pipeline, Δ P
dR=P
0– P
dR, wherein P
dR: experiment pipeline terminal pressure.
The beneficial effect that the present invention produces is: this system has energy-conserving and environment-protective, construction cost is low, the feature of easy construction, the defeated bottleneck being confined to theory and empirical studies is increased for overcoming existing pipeline drag reduction, increase the method for designing etc. that opinion in the wrong and drag reduction increase defeated equipment established experiment basis for expanding Novel drag reduction, and to reduction conveyance conduit construction cost with ensure that conduit running safety is significant.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 increases defeated checking experimental system figure for increasing defeated equipment to Cemented filling;
Fig. 2 is for increasing defeated equipment to duct wall surface vibration drag reduction checking experimental system figure;
Fig. 3 is the diagrammatic cross-section increasing defeated equipment in Fig. 1;
Sliding friction is changed into rolling friction schematic diagram for increasing defeated equipment by Fig. 4;
Fig. 5 is experimental system process flow diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of experimental system for improving gas pipeline transfer efficiency as shown in Figures 1 to 3, air compressor (1) is communicated with buffer tank (2) left upper end, buffer tank (2) right-hand member is connected with admission line (6), main valve (3), electromagnetic pneumatic variable valve (4) and flowmeter (5) are arranged on admission line (6) successively, and the end of described admission line (6) is installed and increased defeated confirmatory experiment pipeline or drag reduction confirmatory experiment pipeline;
Described increasing defeated confirmatory experiment pipeline comprises pipe (61) of setting out on a journey, lower road pipe (62), solenoid directional control valve (9), vialog (7) and increases defeated equipment (8), the end of described admission line (6) is equipped with solenoid directional control valve (9), the outlet side of solenoid directional control valve (9) installs set out on a journey pipe (61) and lower road pipe (62) respectively, flowmeter installed by described pipe (61) of setting out on a journey, lower road pipe (62) is installed successively and is increased defeated equipment (8) and flowmeter, and vialog (7) is connected with the defeated equipment of increasing (8);
Described drag reduction confirmatory experiment pipeline comprises flexible pipe (11), shaking table (10), pipe ends on described shaking table (10) is the first connecting hose (11) and the second flexible pipe (12) respectively, described first connecting hose (11) connects admission line (6), and described second flexible pipe (12) connects the pipeline with flowmeter.
Preferably, the defeated equipment of described increasing (8) structure mainly comprises upstream nozzle and the downstream nozzle of cavity and center, cavity rear and front end aligning, the anticollision wall of the tapered inclination of described downstream nozzle surrounding, the long L of cavity, cavity diameter DT, upstream nozzle diameter d 1, downstream nozzle diameter d 2, the tilt angle alpha of anticollision wall.
The pressure surge that described buffer tank (2) produces for buffer air compressor (1), plays the effect of voltage stabilizing off-load, and guaranteeing that gas flows into main valve (3) is continuous stream; Described electromagnetic pneumatic variable valve (4) goes to drive valve by solenoid valve annex, and realize switching value or proportion expression adjustment, its feature controls simply exactly, and reaction is quick, and essential safety; Described solenoid directional control valve (9) utilizes electromagnet suction to promote spool to change the working position of valve, ensures that the pressure flowing into two ends pipeline gas is identical; Described vialog (7) is measured by vibration frequency when increasing defeated equipment (8) for gas, its measurement result is used for shaking table (10) and carries out identical vibration frequency simulation, provides accurate data for increasing defeated equipment to duct wall surface vibration drag reduction confirmatory experiment.
Increase defeated equipment and two aspect effects are mainly contained to gas pipeline conveying: 1. drag reduction effect, use for reference mechanical friction principle, gas in pipeline is through increasing defeated equipment, be converted into effect of Fluid Pulsation by continuity flowing and carry out fluctuation conveying, " sliding friction " when the friction of gas and pipeline wall is flowed by continuity in the process changes into " rolling friction " when pulse ripple is flowed, as shown in Figure 4, the friction of gas and pipeline wall reduces greatly; 2. increase defeated effect, the fluctuation that in pipe, gases cycle occurs causes excitation to central jet just as gas spring, significantly improves the surge pressure of jet, reduces the loss of pressure in course of conveying, with improve useful pressure drop, thus reach the defeated effect of increasing.
As shown in Figure 5 for a method for the experimental system of above-mentioned raising gas pipeline transfer efficiency, comprise the following steps:
Increase defeated equipment and defeated confirmatory experiment increased to Cemented filling:
Step S101: measure routine and do not install the correlative flow, the pressure data that increase defeated equipment pipeline, air compressor is pressed into gas to pipeline, gas is through the voltage stabilizing Unloading Effect of buffer tank, and guaranteeing that gas flows into main valve is continuous stream, is regulated flow into reversal valve uninterrupted by electromagnetic pneumatic variable valve;
Step S102: adjustable change valve makes gas by upper pipeline, measures the origin or beginning flow Q flowing into reversal valve respectively by flowmeter
0with origin or beginning pressure P
0and the end flow Q after a segment pipe
1with terminal pressure P
1;
Step S103: measure correlative flow, the pressure data of lower pipeline installed and increase defeated equipment pipeline, keeps other conditions and routine not to install increasing defeated equipment pipeline identical;
Step S104: adjustable change valve makes gas by lower pipeline, is measured respectively by flowmeter and flows into reversal valve and the end flow Q of equal length pipeline after increasing defeated equipment unsteady flow
dRwith terminal pressure P
dR, utilize vialog to measure simultaneously and increase defeated equipment vibration frequency F operationally
dR;
Step S105: at interval of half an hour, repeats step S101---S104, measures 8 groups of data, and record;
Increase defeated equipment to duct wall surface vibration drag reduction confirmatory experiment:
Step S201: keep other conditions and routine not to install increasing defeated equipment pipeline identical.
Step S202: regulate shaking table, makes to carry out Research on Shaking Table for Simulating and vialog and measures and increase defeated equipment vibration frequency F operationally
0identical, the end flow Q of equal length pipeline after unsteady flow is measured respectively by flowmeter
fwith terminal pressure pressure P
f, at interval of half an hour, measure 8 groups of data, and record;
Correlation computations is as follows:
(1) computing formula of defeated rate is increased:
T
I＝[(Q
DR–Q
0)/Q
DR]×100％
T
i: increase defeated rate;
Q
0: routine does not install the origin or beginning flow increasing defeated equipment pipeline;
Q
dR: the end flow increasing defeated equipment pipeline is installed.
(2) computing formula of drag reducing efficiency:
DR＝[(ΔP
0–ΔP
DR)/ΔP
0]×100％
DR: drag reducing efficiency;
Δ P
0: routine is not installed and is increased the loss of defeated equipment pressure-drop in pipeline, Δ P
0=P
0– P
1,
Wherein P
0: experiment pipeline origin or beginning pressure, P
1: experiment pipeline terminal pressure;
Δ P
dR: install and increase the loss of defeated equipment pressure-drop in pipeline, Δ P
dR=P
0– P
dR, wherein P
dR: experiment pipeline terminal pressure.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. one kind for improving the experimental system of gas pipeline transfer efficiency, it is characterized in that, air compressor (1) is communicated with buffer tank (2) left upper end, buffer tank (2) right-hand member is connected with admission line (6), main valve (3), electromagnetic pneumatic variable valve (4) and flowmeter (5) are arranged on admission line (6) successively, and the end of described admission line (6) is installed and increased defeated confirmatory experiment pipeline or drag reduction confirmatory experiment pipeline;
Described increasing defeated confirmatory experiment pipeline comprises pipe (61) of setting out on a journey, lower road pipe (62), solenoid directional control valve (9), vialog (7) and increases defeated equipment (8), the end of described admission line (6) is equipped with solenoid directional control valve (9), the outlet side of solenoid directional control valve (9) installs set out on a journey pipe (61) and lower road pipe (62) respectively, flowmeter installed by described pipe (61) of setting out on a journey, lower road pipe (62) is installed successively and is increased defeated equipment (8) and flowmeter, and vialog (7) is connected with the defeated equipment of increasing (8);
Described drag reduction confirmatory experiment pipeline comprises flexible pipe (11), shaking table (10), pipe ends on described shaking table (10) is the first connecting hose (11) and the second flexible pipe (12) respectively, described first connecting hose (11) connects admission line (6), and described second flexible pipe (12) connects the pipeline with flowmeter.
2. a kind of experimental system for improving gas pipeline transfer efficiency as claimed in claim 1, it is characterized in that, the defeated equipment of described increasing (8) structure mainly comprises upstream nozzle and the downstream nozzle of cavity and center, cavity rear and front end aligning, the anticollision wall of the tapered inclination of described downstream nozzle surrounding, the long L of cavity, cavity diameter DT, upstream nozzle diameter d 1, downstream nozzle diameter d 2, the tilt angle alpha of anticollision wall.
3., for a method for the experimental system of above-mentioned raising gas pipeline transfer efficiency, it is characterized in that, comprise the following steps:
Increase defeated equipment and defeated confirmatory experiment increased to Cemented filling:
Step S101: measure routine and do not install the correlative flow, the pressure data that increase defeated equipment pipeline, air compressor is pressed into gas to pipeline, gas is through the voltage stabilizing Unloading Effect of buffer tank, and guaranteeing that gas flows into main valve is continuous stream, is regulated flow into reversal valve uninterrupted by electromagnetic pneumatic variable valve;
Step S102: adjustable change valve makes gas by upper pipeline, measures the origin or beginning flow Q flowing into reversal valve respectively by flowmeter
0with origin or beginning pressure P
0and the end flow Q after a segment pipe
1with terminal pressure P
1;
Step S103: measure correlative flow, the pressure data of lower pipeline installed and increase defeated equipment pipeline, keeps other conditions and routine not to install increasing defeated equipment pipeline identical;
Step S104: adjustable change valve makes gas by lower pipeline, is measured respectively by flowmeter and flows into reversal valve and the end flow Q of equal length pipeline after increasing defeated equipment unsteady flow
dRwith terminal pressure P
dR, utilize vialog to measure simultaneously and increase defeated equipment vibration frequency F operationally
dR;
Step S105: at interval of half an hour, repeats step S101---S104, measures 8 groups of data, and record;
Increase defeated equipment to duct wall surface vibration drag reduction confirmatory experiment:
Step S201: keep other conditions and routine not to install increasing defeated equipment pipeline identical.
Step S202: regulate shaking table, makes to carry out Research on Shaking Table for Simulating and vialog and measures and increase defeated equipment vibration frequency F operationally
0identical, the end flow Q of equal length pipeline after unsteady flow is measured respectively by flowmeter
fwith terminal pressure pressure P
f, at interval of half an hour, measure 8 groups of data, and record;
Correlation computations is as follows:
(1) computing formula of defeated rate is increased:
T
I＝[(Q
DR–Q
0)/Q
DR]×100％
T
i: increase defeated rate;
Q
0: routine does not install the origin or beginning flow increasing defeated equipment pipeline;
Q
dR: the end flow increasing defeated equipment pipeline is installed.
(2) computing formula of drag reducing efficiency:
DR＝[(ΔP
0–ΔP
DR)/ΔP
0]×100％
DR: drag reducing efficiency;
Δ P
0: routine is not installed and is increased the loss of defeated equipment pressure-drop in pipeline, Δ P
0=P
0– P
1,
Wherein P
0: experiment pipeline origin or beginning pressure, P
1: experiment pipeline terminal pressure;
Δ P
dR: install and increase the loss of defeated equipment pressure-drop in pipeline, Δ P
dR=P
0– P
dR, wherein P
dR: experiment pipeline terminal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796687.9A CN105424391B (en) | 2015-11-18 | 2015-11-18 | A kind of experimental method for being used to improve gas pipeline transfer efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796687.9A CN105424391B (en) | 2015-11-18 | 2015-11-18 | A kind of experimental method for being used to improve gas pipeline transfer efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105424391A true CN105424391A (en) | 2016-03-23 |
| CN105424391B CN105424391B (en) | 2017-12-26 |
Family
ID=55502745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510796687.9A Expired - Fee Related CN105424391B (en) | 2015-11-18 | 2015-11-18 | A kind of experimental method for being used to improve gas pipeline transfer efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105424391B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120022443A (en) * | 2010-09-02 | 2012-03-12 | 현대건설주식회사 | Test apparatus of concrete piping |
| CN203549260U (en) * | 2013-09-29 | 2014-04-16 | 湖北汽车工业学院 | Throughput increasing device for pipeline |
| CN203772680U (en) * | 2014-03-03 | 2014-08-13 | 中国石油化工股份有限公司 | Device for measuring pipe flow friction |
| CN204177704U (en) * | 2014-11-03 | 2015-02-25 | 长江大学 | A kind of High Temperature High Pressure drag reducer evaluating device |
-
2015
- 2015-11-18 CN CN201510796687.9A patent/CN105424391B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120022443A (en) * | 2010-09-02 | 2012-03-12 | 현대건설주식회사 | Test apparatus of concrete piping |
| CN203549260U (en) * | 2013-09-29 | 2014-04-16 | 湖北汽车工业学院 | Throughput increasing device for pipeline |
| CN203772680U (en) * | 2014-03-03 | 2014-08-13 | 中国石油化工股份有限公司 | Device for measuring pipe flow friction |
| CN204177704U (en) * | 2014-11-03 | 2015-02-25 | 长江大学 | A kind of High Temperature High Pressure drag reducer evaluating device |
Non-Patent Citations (1)
| Title |
|---|
| 廖振方 等: "管道增输器的数值模拟与现场试验", 《重庆大学学报》 * |
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| Publication number | Publication date |
|---|---|
| CN105424391B (en) | 2017-12-26 |
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Granted publication date: 20171226 Termination date: 20201118 |