CN105424391B - A kind of experimental method for being used to improve gas pipeline transfer efficiency - Google Patents
A kind of experimental method for being used to improve gas pipeline transfer efficiency Download PDFInfo
- Publication number
- CN105424391B CN105424391B CN201510796687.9A CN201510796687A CN105424391B CN 105424391 B CN105424391 B CN 105424391B CN 201510796687 A CN201510796687 A CN 201510796687A CN 105424391 B CN105424391 B CN 105424391B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- defeated
- gas
- defeated equipment
- pressure
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pipeline Systems (AREA)
Abstract
The present invention proposes a kind of experimental method for being used to improve gas pipeline transfer efficiency, use for reference machine driving tribology principle, when gas, which passes through the pipeline with self-excited oscillation pulse effect, increases defeated equipment, gas is changed into pulse ripple " rolling friction " conveying in pipeline by continuity " sliding friction " conveying, thus the pipeline drag reducing efficiency of gas can be improved and increase defeated rate, and then improve gas pipeline transfer efficiency.The present invention is used to overcome existing gas pipeline anti-drag to increase the defeated bottleneck for being confined to theoretical and empirical studies, experiment basis have been established to expand design method of novel drag reduction increasing opinion in the wrong and the defeated equipment of drag reduction increasing etc., and to reducing conveyance conduit construction cost and ensureing that conduit running is significant safely.
Description
Technical field
The present invention is mechanical engineering technical field, and in particular to a kind of experiment side for being used to improve gas pipeline transfer efficiency
Method.
Background technology
At present, the major way of gas transport is pipeline, and the displacement for improving pipeline, conventional method has
There is the shortcomings of construction cost is high, and construction is difficult, and drag-reduction effect is undesirable.Have larger transformation special according to self-excited oscillation pulsed water jet
Property and oscillation chamber in special boundary condition the characteristics of, in the case where not changing pipe diameter pipeline increase defeated equipment can be significantly
Increase displacement, the long range that it can be widely used for the gases such as the coal gas of metallurgy industry, blast furnace steam, natural gas transports, and reduces
Energy consumption.Improve the inexorable trend that gas pipeline transfer efficiency is gas pipeline conveying development, and conveyance conduit technological progress
Important symbol, it is to reducing conveyance conduit construction cost, ensureing that conduit running is significant safely.
A kind of entitled " natural gas line drag reduction undercoating method of determination and evaluation and equipment " (China Patent No.
ZL201310072561.8) patented technology, the technology can evaluate drag-reducing coating in in-service natural gas line including establishing one kind
The method of duty status influence factor so that pipeline management person becomes apparent from accurately recognizing to internally coated military service performance state
Know, and understand the major influence factors for influenceing undercoating duty status, avoid the big effect trend of inwall drag-reducing coating from deteriorating, so as to reach
To the effect for extending the inwall drag-reducing coating life-span." there is synergy, the Dynamic Coupling bionic function of anti-drag function in liquid medium
Surface " (patent No. ZL 201210038948.7) patented technology, the technology, which includes one kind, to be had synergy in liquid medium, subtracts
The Dynamic Coupling bionic functional surface of function is hindered, the Dynamic Coupling bionic functional surface is by soft formation surface and hard substrate layer group
Into hard substrate layer is machined with bionic, non-smooth structure, and soft formation superficial layer is macromolecule composite elastic film, utilizes high molecular polymerization
The elastic deformation on thing surface and macromolecule composite elastic film surface couple pair with the bionic, non-smooth form above base material
Liquid medium carries out dynamic control, it is achieved thereby that gas machinery synergy.
Although above providing a kind of natural gas line drag reduction undercoating, long distance pipeline drag reduction increases transmission method in conduit running
Initial stage drag reducing efficiency it is higher, increase defeated positive effect, but the duration is not grown, and can only keep effective within a couple of days.At present, for gas
Body pipeline increases defeated equipment drag reduction and increases defeated efficiency, relies on experience and theoretical research substantially, do not provide effective experimental system and
Design method.
The content of the invention
Technical matters to be solved by this invention are to provide a kind of experiment side for being used to improve gas pipeline transfer efficiency
Method, there are energy-conserving and environment-protective, construction cost is low, it is easy for construction the characteristics of, defeated be confined to theory for overcoming existing pipeline drag reduction to increase
With the bottleneck of empirical studies, experiment base has been established to expand design method of novel drag reduction increasing opinion in the wrong and the defeated equipment of drag reduction increasing etc.
Plinth, and to reducing conveyance conduit construction cost and ensureing that conduit running is significant safely.
The technical proposal of the invention is realized in this way：
A kind of experimental method for being used to improve gas pipeline transfer efficiency, air compressor (1) and vacuum tank (2) left upper end
Connection, vacuum tank (2) right-hand member are connected with admission line (6), and main valve (3), electromagnetic pneumatic regulating valve (4) and flowmeter (5) are successively
On admission line (6), the end installation of the admission line (6) increases defeated confirmatory experiment pipeline or drag reduction confirmatory experiment pipe
Road；
The defeated confirmatory experiment pipeline of increasing includes upper road pipe (61), lower road pipe (62), solenoid directional control valve (9), vialog (7)
With the defeated equipment (8) of increasing, the end of the admission line (6) is equipped with solenoid directional control valve (9), the outlet side point of solenoid directional control valve (9)
Road pipe (61) and lower road pipe (62) are not installed, flowmeter are installed, installation increases lower road pipe (62) successively on the upper road pipe (61)
Defeated equipment (8) and flowmeter, vialog (7) are connected with increasing defeated equipment (8)；
The drag reduction confirmatory experiment pipeline includes the first connection flexible pipe (11), shake table (10), on the shake table (10)
Pipe ends distinguish the first connection flexible pipe (11) and the second flexible pipe (12), the first connection flexible pipe (11) connection air inlet pipe
Road (6), the pipeline of the second flexible pipe (12) connection with flowmeter；
Defeated equipment (8) structure of described increasing mainly include the upstream nozzle that cavity and cavity rear and front end center be aligned and
Downstream nozzle, the tapered inclined anticollision wall of downstream nozzle surrounding, cavity long L, cavity diameter DT, upstream nozzle diameter
D1, downstream nozzle diameter d2, the tilt angle alpha of anticollision wall；
Specific method comprises the following steps：
Increase defeated equipment and defeated confirmatory experiment is increased to pipeline：
Step S101：Measurement is conventional not to install correlative flow, the pressure data for increasing defeated equipment pipeline, and air compressor is to pipe
Road is pressed into gas, and gas passes through the voltage stabilizing Unloading Effect of vacuum tank, it is ensured that it is continuous stream that gas, which flows into main valve, passes through electromagnetic pneumatic
Adjust valve regulation and flow into reversal valve uninterrupted；
Step S102：Regulation solenoid directional control valve passes the gas through upper pipeline, measures inflow electromagnetism respectively by flowmeter and changes
To the origin or beginning flow Q of valve0With playing end pressure P0And the end flow Q after a segment pipe1With terminal pressure P1；
Step S103：Measurement installation increases correlative flow, the pressure data of the lower pipeline of defeated equipment pipeline, keeps other conditions
It is identical with routine the defeated equipment pipeline of increasing not to be installed；
Step S104：Regulation solenoid directional control valve passes the gas through lower pipeline, measures inflow electromagnetism respectively by flowmeter and changes
To valve and through increasing it is defeated equipment unsteady flow after equal length pipeline end flow QDRWith terminal pressure PDR, while utilize vibration measuring
Instrument measurement increases the vibration frequency F of defeated equipment at workDR；
Step S105：At interval of half an hour, repeat step S101 --- S104,8 groups of data are measured, and record；
Increase defeated equipment to pipeline Wall Vibration drag reduction confirmatory experiment：
Step S201：Keep other conditions identical with not installing the defeated equipment pipeline of increasing routinely；
Step S202：Shake table is adjusted, carry out Research on Shaking Table for Simulating and vialog is measured to increase and defeated is equipped shaking at work
Dynamic frequency F0It is identical, measure the end flow Q of equal length pipeline after unsteady flow respectively by flowmeterFWith terminal pressure pressure PF,
At interval of half an hour, 8 groups of data are measured, and record；
Correlation computations are as follows：
(1) calculation formula of defeated rate is increased：
TI=[(QDR–Q0)/QDR] × 100%
TI：Increase defeated rate；
Q0：It is conventional that the origin or beginning flow for increasing defeated equipment pipeline is not installed；
QDR：Installation increases the end flow of defeated equipment pipeline；
(2) calculation formula of drag reducing efficiency：
DR=[(Δ P0–ΔPDR)/ΔP0] × 100%
DR：Drag reducing efficiency；
ΔP0：Conventional do not install increases defeated equipment pressure-drop in pipeline loss, Δ P0=P0–P1,
Wherein P0：Test pipeline origin or beginning pressure, P1：Test pipeline terminal pressure；
ΔPDR：Installation increases defeated equipment pressure-drop in pipeline loss, Δ PDR=P0–PDR, wherein PDR：Test pipeline terminal pressure.
Had the beneficial effect that caused by the present invention：The system has energy-conserving and environment-protective, and construction cost is low, it is easy for construction the characteristics of,
For overcoming existing pipeline drag reduction to increase the defeated bottleneck for being confined to theoretical and empirical studies, to expand novel drag reduction increasing opinion in the wrong and subtracting
Resistance increases design method of defeated equipment etc. and has established experiment basis, and to reducing conveyance conduit construction cost and ensureing conduit running peace
It is complete significant.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 increases defeated checking experimental system figure to increase defeated equipment to pipeline；
Fig. 2 is the defeated equipment of increasing to pipeline Wall Vibration drag reduction checking experimental system figure；
Fig. 3 is the diagrammatic cross-section for increasing defeated equipment in Fig. 1；
Sliding friction is changed into rolling friction schematic diagram by Fig. 4 to increase defeated equipment；
Fig. 5 is experimental system flow chart.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is a kind of as shown in Figures 1 to 3 to be used to improving the experimental system of gas pipeline transfer efficiency, air compressor (1) with it is steady
Press the connection of tank (2) left upper end, vacuum tank (2) right-hand member is connected with admission line (6), main valve (3), electromagnetic pneumatic regulating valve (4) and
Flowmeter (5) is sequentially arranged on admission line (6), the installation of the end of the admission line (6) increase defeated confirmatory experiment pipeline or
Drag reduction confirmatory experiment pipeline；
The defeated confirmatory experiment pipeline of increasing includes upper road pipe (61), lower road pipe (62), solenoid directional control valve (9), vialog (7)
With the defeated equipment (8) of increasing, the end of the admission line (6) is equipped with solenoid directional control valve (9), the outlet side point of solenoid directional control valve (9)
Road pipe (61) and lower road pipe (62) are not installed, flowmeter are installed, installation increases lower road pipe (62) successively on the upper road pipe (61)
Defeated equipment (8) and flowmeter, vialog (7) are connected with increasing defeated equipment (8)；
The drag reduction confirmatory experiment pipeline includes the first connection flexible pipe (11), shake table (10), on the shake table (10)
Pipe ends distinguish the first connection flexible pipe (11) and the second flexible pipe (12), the first connection flexible pipe (11) connection air inlet pipe
Road (6), the pipeline of the second flexible pipe (12) connection with flowmeter.
Preferably, defeated equipment (8) structure of described increasing is mainly aligned upper including cavity and cavity rear and front end center
Swim nozzle and downstream nozzle, the tapered inclined anticollision wall of downstream nozzle surrounding, cavity long L, cavity diameter DT, upstream
Nozzle diameter d1, downstream nozzle diameter d2, the tilt angle alpha of anticollision wall.
The vacuum tank (2) is used for pressure oscillation caused by buffer air compressor (1), plays a part of voltage stabilizing off-load,
It is continuous stream to ensure that gas flows into main valve (3)；The electromagnetic pneumatic regulating valve (4) goes to drive valve by magnetic valve annex, real
Existing switching value or proportion expression regulation, its feature are exactly that control is simple, rapid reaction, and essential safety；The solenoid directional control valve (9)
Valve element is promoted to change the operating position of valve using electromagnet suction, ensures that the pressure for flowing into both ends pipeline gas is identical；It is described
Vibration frequency when vialog (7) is used for gas by increasing defeated equipment (8) is measured, and its measurement result is carried out for shake table (10)
Identical vibration frequency simulation, accurate data is provided to pipeline Wall Vibration drag reduction confirmatory experiment to increase defeated equipment.
Increasing defeated equipment mainly has two aspects to act on gas pipeline conveying：1. drag reduction acts on, mechanical friction principle, pipe are used for reference
Gas in road is converted into effect of Fluid Pulsation by increasing defeated equipment, by continuity flowing and carries out fluctuation conveying, in the process gas
" sliding friction " when the friction of body and pipeline wall is flowed by continuity is changed into " rolling friction " during pulse ripple flowing,
As shown in figure 4, the friction of gas and pipeline wall greatly reduces；2. increasing defeated effect, the fluctuation that gases cycle occurs in pipe is still
Excitation is caused to central jet as gas spring, the surge pressure of jet is greatly improved, reduces and conveyed
The loss of pressure in journey, with useful pressure drop is improved, increase defeated effect so as to reach.
A kind of experimental method for above-mentioned raising gas pipeline transfer efficiency as shown in Figure 5, comprises the following steps：
Increase defeated equipment and defeated confirmatory experiment is increased to pipeline：
Step S101：Measurement is conventional not to install correlative flow, the pressure data for increasing defeated equipment pipeline, and air compressor is to pipe
Road is pressed into gas, and gas passes through the voltage stabilizing Unloading Effect of vacuum tank, it is ensured that it is continuous stream that gas, which flows into main valve, passes through electromagnetic pneumatic
Adjust valve regulation and flow into reversal valve uninterrupted；
Step S102：Regulation solenoid directional control valve passes the gas through upper pipeline, measures inflow electromagnetism respectively by flowmeter and changes
To the origin or beginning flow Q of valve0With playing end pressure P0And the end flow Q after a segment pipe1With terminal pressure P1；
Step S103：Measurement installation increases correlative flow, the pressure data of the lower pipeline of defeated equipment pipeline, keeps other conditions
It is identical with routine the defeated equipment pipeline of increasing not to be installed；
Step S104：Regulation solenoid directional control valve passes the gas through lower pipeline, measures inflow electromagnetism respectively by flowmeter and changes
To valve and through increasing it is defeated equipment unsteady flow after equal length pipeline end flow QDRWith terminal pressure PDR, while utilize vibration measuring
Instrument measurement increases the vibration frequency F of defeated equipment at workDR；
Step S105：At interval of half an hour, repeat step S101 --- S104,8 groups of data are measured, and record；
Increase defeated equipment to pipeline Wall Vibration drag reduction confirmatory experiment：
Step S201：Keep other conditions identical with not installing the defeated equipment pipeline of increasing routinely；
Step S202：Shake table is adjusted, carry out Research on Shaking Table for Simulating and vialog is measured to increase and defeated is equipped shaking at work
Dynamic frequency F0It is identical, measure the end flow Q of equal length pipeline after unsteady flow respectively by flowmeterFWith terminal pressure pressure PF,
At interval of half an hour, 8 groups of data are measured, and record；
Correlation computations are as follows：
(1) calculation formula of defeated rate is increased：
TI=[(QDR–Q0)/QDR] × 100%
TI：Increase defeated rate；
Q0：It is conventional that the origin or beginning flow for increasing defeated equipment pipeline is not installed；
QDR：Installation increases the end flow of defeated equipment pipeline；
(2) calculation formula of drag reducing efficiency：
DR=[(Δ P0–ΔPDR)/ΔP0] × 100%
DR：Drag reducing efficiency；
ΔP0：Conventional do not install increases defeated equipment pressure-drop in pipeline loss, Δ P0=P0–P1,
Wherein P0：Test pipeline origin or beginning pressure, P1：Test pipeline terminal pressure；
ΔPDR：Installation increases defeated equipment pressure-drop in pipeline loss, Δ PDR=P0–PDR, wherein PDR：Test pipeline terminal pressure.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (1)
1. a kind of experimental method for being used to improve gas pipeline transfer efficiency, it is characterised in that air compressor (1) and vacuum tank
(2) left upper end is connected, and vacuum tank (2) right-hand member is connected with admission line (6), main valve (3), electromagnetic pneumatic regulating valve (4) and flow
Meter (5) is sequentially arranged on admission line (6), and the end installation of the admission line (6) increases defeated confirmatory experiment pipeline or drag reduction
Confirmatory experiment pipeline；
It is described to increase defeated confirmatory experiment pipeline including upper road pipe (61), lower road pipe (62), solenoid directional control valve (9), vialog (7) and increase
Defeated equipment (8), the end of the admission line (6) are equipped with solenoid directional control valve (9), and the outlet side of solenoid directional control valve (9) is pacified respectively
Road pipe (61) and lower road pipe (62) are loaded onto, flowmeter is installed, installation increases defeated dress to lower road pipe (62) successively on the upper road pipe (61)
Standby (8) and flowmeter, vialog (7) are connected with increasing defeated equipment (8)；
The drag reduction confirmatory experiment pipeline includes the first connection flexible pipe (11), shake table (10), the pipe on the shake table (10)
The first connection flexible pipe (11) and the second flexible pipe (12) are distinguished in road both ends, and first connection flexible pipe (11) connects admission line (6),
The pipeline of second flexible pipe (12) connection with flowmeter；
Defeated equipment (8) structure of described increasing mainly includes upstream nozzle and the downstream of cavity and the alignment of cavity rear and front end center
Nozzle, the tapered inclined anticollision wall of downstream nozzle surrounding, cavity long L, cavity diameter DT, upstream nozzle diameter d1,
Downstream nozzle diameter d2, the tilt angle alpha of anticollision wall；
Specific method comprises the following steps：
Increase defeated equipment and defeated confirmatory experiment is increased to pipeline：
Step S101：Measurement is conventional not to install correlative flow, the pressure data for increasing defeated equipment pipeline, and air compressor is to pipeline pressure
Enter gas, gas passes through the voltage stabilizing Unloading Effect of vacuum tank, it is ensured that it is continuous stream that gas, which flows into main valve, is adjusted by electromagnetic pneumatic
Valve regulation flows into reversal valve uninterrupted；
Step S102：Regulation solenoid directional control valve passes the gas through upper pipeline, measures inflow solenoid directional control valve respectively by flowmeter
Origin or beginning flow Q0With playing end pressure P0And the end flow Q after a segment pipe1With terminal pressure P1；
Step S103：Measurement installation increase it is defeated equipment pipeline lower pipeline correlative flow, pressure data, keep other conditions with often
It is identical that rule do not install the defeated equipment pipeline of increasing；
Step S104：Regulation solenoid directional control valve passes the gas through lower pipeline, measures inflow solenoid directional control valve respectively by flowmeter
And through increasing it is defeated equipment unsteady flow after equal length pipeline end flow QDRWith terminal pressure PDR, while surveyed using vialog
Amount increases the vibration frequency F of defeated equipment at workDR；
Step S105：At interval of half an hour, repeat step S101 --- S104,8 groups of data are measured, and record；
Increase defeated equipment to pipeline Wall Vibration drag reduction confirmatory experiment：
Step S201：Keep other conditions identical with not installing the defeated equipment pipeline of increasing routinely；
Step S202：Shake table is adjusted, carry out Research on Shaking Table for Simulating is measured with vialog and increases the vibration frequency of defeated equipment at work
Rate F0It is identical, measure the end flow Q of equal length pipeline after unsteady flow respectively by flowmeterFWith terminal pressure pressure PF, every
Every half an hour, 8 groups of data are measured, and record；
Correlation computations are as follows：
(1) calculation formula of defeated rate is increased：
TI=[(QDR–Q0)/QDR] × 100%
TI：Increase defeated rate；
Q0：It is conventional that the origin or beginning flow for increasing defeated equipment pipeline is not installed；
QDR：Installation increases the end flow of defeated equipment pipeline；
(2) calculation formula of drag reducing efficiency：
DR=[(Δ P0–ΔPDR)/ΔP0] × 100%
DR：Drag reducing efficiency；
ΔP0：Conventional do not install increases defeated equipment pressure-drop in pipeline loss, Δ P0=P0–P1,
Wherein P0：Test pipeline origin or beginning pressure, P1：Test pipeline terminal pressure；
ΔPDR：Installation increases defeated equipment pressure-drop in pipeline loss, Δ PDR=P0–PDR, wherein PDR：Test 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 CN105424391A (en) | 2016-03-23 |
| CN105424391B true 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101207054B1 (en) * | 2010-09-02 | 2012-11-30 | 현대건설주식회사 | Test apparatus of concrete piping |
-
2015
- 2015-11-18 CN CN201510796687.9A patent/CN105424391B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|
| 管道增输器的数值模拟与现场试验;廖振方 等;《重庆大学学报》;20100731;第33卷(第7期);第49-52页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105424391A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103353908B (en) | A kind of pipe resistance coefficient Method for Accurate Calculation based on numerical computations | |
| CN105135216A (en) | Method for locating leakage position of ore pulp conveying pipe | |
| CN202182740U (en) | Porous steady-flow differential pressure type flow meter | |
| EP0471465B1 (en) | Drag reduction method for gas pipelines | |
| RU2013147825A (en) | METHOD AND DEVICE FOR CONTROLLING, APPROPRIATELY, REGULATING A FLUID CONVEYOR FOR TRANSPORTING A FLUID MEDIA INSIDE A PIPELINE FOR A FLUID | |
| RU2513942C2 (en) | Gas well operation method | |
| CN103194758B (en) | Forming device for gas production pipeline corrosion inhibitor slug pre-film | |
| CN108917890B (en) | Durability test device of flow metering device | |
| US8967251B2 (en) | Method of a formation hydraulic fracturing | |
| CN110736028B (en) | Acceleration flow control system and method in long-distance slurry pipeline multi-stage pump station conveying | |
| CN105424391B (en) | A kind of experimental method for being used to improve gas pipeline transfer efficiency | |
| CN111044410A (en) | Device and method for detecting rheological property of coal slurry based on safety ring pipe | |
| CN103994958A (en) | Measuring apparatus for gas permeability of ultra-low-permeability rock core and measuring method using measuring apparatus | |
| CN103913202B (en) | Ultrasonic water meter intercepts coefficient processing method | |
| CN110864874A (en) | Multifunctional resistance reduction effect experiment testing device and method | |
| CN109084968B (en) | Air valve dynamic performance testing device and testing method | |
| CN204027618U (en) | A kind of flow measurement device that is installed in parallel areal survey wide range ratio | |
| CN104330134B (en) | A kind of pipeline flow dynamic calibration system | |
| CN203175831U (en) | Economic water pump test fixing pipe | |
| CN102879325A (en) | Solid surface absorption layer scouring resistance testing device | |
| CN205002955U (en) | Multi -functional change structure valve characteristic test system | |
| CN205879266U (en) | Electricity magnetic current water gauge | |
| CN203949786U (en) | A kind of Venturi tube that can cavitation | |
| CN106404631B (en) | System and method for testing oil-water two-phase conductivity of compact oil pressure fracture network | |
| CN103697225B (en) | Shot-peening digital newspaper industry ball material Flow valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20201118 |