CN103790757A - Self power generation device of submarine pipeline - Google Patents

Self power generation device of submarine pipeline Download PDF

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Publication number
CN103790757A
CN103790757A CN201410066146.6A CN201410066146A CN103790757A CN 103790757 A CN103790757 A CN 103790757A CN 201410066146 A CN201410066146 A CN 201410066146A CN 103790757 A CN103790757 A CN 103790757A
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pipeline
power generation
generating device
generation device
submarine pipeline
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李宇庭
徐涛
甘芳吉
万正军
廖俊必
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Sichuan University
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Sichuan University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The invention relates to a self power generation device of a submarine pipeline, in particular to a self power generation device of a metal pipeline in the deepwater seabed. The self power generation device of the submarine pipeline mainly solves the problems that power supply of a detection/monitoring device of a pipeline in the deep sea is difficult, normal flowing and normal cleaning of a pipeline are influenced by an existing pipeline power generation device, and sealing performance of a power generation device in the deep sea is poor. The self power generation device of the submarine pipeline is characterized in that a power generation device body is installed in a branch pipeline (2), and flowing of fluid in a main pipeline (1) and cleaning of the main pipeline (1) cannot be influenced; power generation fluid, namely gas or liquid, passes through filter screens (11), is guided by a fairing (5), and drives helical blades (6) to rotate; permanent magnets (9) are installed at the blade ends of the helical blades (6) respectively, and magnetic lines of force of the permanent magnets can penetrate through a main cavity wall (4) of the power generation device body; when the helical blades (6) rotate, magnetic induction lines generated by the permanent magnets (9) are cut by a coil (17) embedded into the main cavity wall (4), and the function of self power generation in the seabed is achieved.

Description

Submarine pipeline self-generating device
Technical field
The present invention relates to a kind of submarine pipeline fluid self-generating device.Especially high pressure resistant about one, reliability is high, the electricity generating device that tightness is good, and can realize at deep-sea place is the power supply of detection/monitoring equipment.
Background technique
Present stage, hydrocarbon sub-marine field obtained very great development, need to lay sea-bottom oil-gas pipeline and transport.The laying cost of these pipelines is high, construction quality requires highly, and material and performance to pipeline have strict demand.So need detection/monitoring instrument to measure and monitoring pipeline each side security parameter, guarantee safe transport.
Deep-sea instrument mainly relies on ground power supply system at present, and cable laying is powered.This power supply mode exists that cost is high, reliability is low, easily aging, the deficiency such as easy care not of circuit.Therefore the power supply of offshore instrument equipment is a masty problem.
The energy that deep-sea place can directly utilize is few, more existing self power generation equipment utilization seabed ocean current power generations.But because the geographical distribution of ocean current is inhomogeneous, this electricity generating device does not have general applicability, only could use in the ocean current region of flowing through.Fluid (liquid or gas) in pipeline has kinetic energy, can utilize it to generate electricity, and by power storage utilization.
Present stage utilize pipeline fluid generating device some blade is placed in to main pipeline, part power generation blade is placed in main pipeline by some.In the time of cleaning main pipeline, just keep away and unavoidably will remove whole electricity generating device like this, pipeline cleaning work is produced to inconvenience, also can impact the normal circulation of pipeline inner fluid.Meanwhile, pipeline power generating equipment need to derive electric current by wire, requires the seabed high, outside pressure is large at seal, and punching cabling can bring great potential safety hazard, and this just has higher requirement to the internal structure of power generating equipment.
Utilize in addition pipeline fluid generating also to should be taken into account its corrosion to power generating equipment, every have the parts that directly contact all must have very strong corrosion resistance with fluid.Guarantee electricity generating device can long-term stable work in corrosive fluid like this.
How can, in the situation that meeting seabed high pressure and flow-induced corrosion, realize safe, reliable, stable self power generation, and for the power supply of coherent detection/monitoring instrument, to be a problem demanding prompt solution.
summary of the invention
The present invention is mainly for seabed hyperbaric environment generating difficulty in background technique, terrestrial pipeline power generating equipment should not directly migrate to seabed and use, and the deficiency such as power generation blade mounting point, a kind of submarine pipeline self-generating device is provided, and that this self-generating device has is simple in structure, Installation and Debugging convenient, reliability is high, good airproof performance, corrosion-resistant, high voltage bearing feature.
In order solving, blade impact on main pipeline when the main pipeline to be installed, on main pipeline, to open lateral (Fig. 1), rotor machine is fixedly mounted into a branch pipe(tube) part with flange plate.Utilize the fluid driven blade rotation in lateral to realize generating.
(1)main pipeline flow velocity and lateral flow relocity calculation are as follows:
Before known shunting, main pipeline fluid (incompressible fluid) flow velocity is, main pipeline diameter is D, and branch pipe(tube) diameter is d.Fluid density is
Figure 858842DEST_PATH_IMAGE001
, pipeline absolute roughness is Δ, the kinematical viscosity of fluid is
Figure 704569DEST_PATH_IMAGE002
, branch pipe(tube) local loss coefficient is
Figure 481901DEST_PATH_IMAGE003
.Main pipeline and branch pipe(tube) total length are respectively
Figure 412555DEST_PATH_IMAGE004
, angle is θ, the concrete size in primary branch road is as Fig. 2.Calculate the rear main pipeline flow velocity of shunting , branch pipe(tube) flow velocity
Figure 224839DEST_PATH_IMAGE006
.
First the relative roughness that calculates main pipeline and branch pipe(tube) is respectively:
Figure 895991DEST_PATH_IMAGE007
,
Figure 633265DEST_PATH_IMAGE008
Again from Moody chart according to mobile corresponding region, find main pipeline and branch pipe(tube) on-way resistance coefficient is:
Figure 706264DEST_PATH_IMAGE009
Total discharge before shunting:
Figure 2116DEST_PATH_IMAGE010
。
Equate according to the road loss of head of shunting principle primary branch:
Figure 160565DEST_PATH_IMAGE011
。
Branch pipe(tube) ingress local loss coefficient is:
。
Then suppose main pipeline flow:
Figure 360526DEST_PATH_IMAGE013
, tentative calculation error is set:
Figure 827279DEST_PATH_IMAGE014
Reynolds number:
。
Calculate through repeatedly tentative calculation and Reynolds number and along the verification of journey damping constant, can obtain
Figure 286521DEST_PATH_IMAGE016
,
Figure 68533DEST_PATH_IMAGE017
value, and then calculate shunting after main pipeline flow velocity
Figure 440608DEST_PATH_IMAGE018
, branch pipe(tube) flow velocity .
Have good sealing in seabed in order to meet electricity generating device, the present invention improves on electric machine structure.Permanent magnet is arranged on the excircle of rotation blade as generator amature, on main equipment chamber outer wall with copper wire coil as generator unit stator.Main cavity selects permeability to approach the Austenitic Stainless Steel of air, and to the unshielded effect of the magnetic line of force, fluid in pipeline (as: oil, rock gas) is to also unshielded effect of the magnetic line of force.The magnetic line of force can pass fluid and cavity wall, in cavity wall outer coil, forms magnetic flux.When permanent magnet is during with blade rotation, in coil, magnetic flux temporal evolution produces Ac.
(2)below the calculating to electricity generating device power:
Obtain blade tip linear velocity through ANSYS simulation calculation
Figure 922329DEST_PATH_IMAGE020
, blade radius is r, rotating speed
Figure 824426DEST_PATH_IMAGE021
(rad/min).On blade, permanent magnet number is n, and permanent magnet coercivity is Hc, and magnetic pole area is S.Fluid, cavity material, air permeability are followed successively by:
Figure 101823DEST_PATH_IMAGE022
, the radial length of every kind of material is:
Figure 456581DEST_PATH_IMAGE023
, each coil turn is N, resistance is R.
First the radially magnetic resistance that calculates three kinds of media is:
Figure 877460DEST_PATH_IMAGE024
。
Magnetic flux maximum value is:
Figure 493118DEST_PATH_IMAGE025
。
Blade rotational speed is:
Figure 206997DEST_PATH_IMAGE026
。
Coil flux is:
。
Each coil both end voltage is:
Figure 5112DEST_PATH_IMAGE028
。
Generating total output is:
Figure 616222DEST_PATH_IMAGE029
。
Patent of the present invention is characterised in that:
Electricity generating device integral installation is in branch pipe(tube), and with flange plate connection, the sealing of high-pressure mechanical seal ring is equipped with in joint.Main pipeline and branch pipe(tube) connection position are installed arc and are filled corrosion-resistant filter screen, and filter screen enriches whole port just.And the arc of filter screen combines with the cambered surface of main pipeline inwall, can not affect the form of main pipeline inwall.The impurity of filter screen filtering can directly flow away with main pipeline fluid, does not enter the electricity generating device of branch pipe(tube), avoids electricity generating device to be subject to impurity erosion.
In main cavity, there are two symmetrical supports, an external side configuration cowling of support, bilateral symmetry is installed.Installation cowling plays the effect of drainage and concentrated energy.Corrosion resistant sliding bearing is laid in two side support punchings, and running shaft is arranged on bearing.
Rotation blade is helical type, and end is circle ring column, and exterior edge face disposes arcuation permanent magnet.Permanent magnet and cavity inner wall have certain interval.Device main cavity material is high strength Austenitic Stainless Steel, and the wired ring recess of its outer wall surface, lays copper coil in groove.Exterior line ring recess both sides configuration annular shallow slot.Coil seal closure, parcel copper coil, middle fluting cabling.Coil seal closure and main cavity are fixed and sealed inside coil by seal ring.Coil seal closure one side has wire outlet hole, and configures three phase current inverter and storage battery.
Accompanying drawing explanation
Fig. 1 pipeline and apparatus of the present invention agent structure and pipeline schematic diagram.
Fig. 2 main pipeline and lateral physical dimension schematic diagram.
The right elevation of Fig. 3 apparatus of the present invention.
Fig. 4 is the sectional view along A-A line in Fig. 3.
The plan view of Fig. 5 apparatus of the present invention.
Fig. 6 is the sectional view along B-B line in Fig. 5.
Embodiment
The present invention is a kind of submarine pipeline self-generating device, and concrete implementation step is as follows:
Refer to Fig. 1, Fig. 1 is the position of submarine pipeline self-generating device of the present invention (16) in main pipeline (1) and branched pipe (2).Advantage is not affect the normal circulation of pipeline fluid and cleaning, utilizes lateral (2) to shunt the fluid obtaining completely and generates electricity.
In Fig. 3 and Fig. 4, be general structure and the inner connection diagram of this contrive equipment.In Fig. 4, electricity generating device is connected with lateral (2) by flange plate (19), and by mechanical seal ring (10) sealing.The Austenitic Stainless Steel that main cavity (4) material is high strength, corrosion resistance is strong, its compressive strength is higher than the compressive strength of main pipeline (1).As first Fig. 1 fluid flows through from filter screen (11), make the impurity that wherein volume is larger cannot enter self-generating device (16).Filter screen is installed on lateral (2) entrance and exit, and its shape can be fitted by inner arc surface direct and main pipeline, does not affect the geometrical shape of main pipeline inner cylindrical surface.Impurity on filter screen can flow away with main pipeline (1) fluid, can not stop up branch pipe(tube).In branch pipe(tube) (2), fluid then flows through the cowling (5) being installed on support, its role is to drainage and concentrated energy, allows fluid can fully promote rotation blade (6).Fixed support is connected with main cavity (4), and travel(l)ing rest (23) is held out against by travel(l)ing rest retainer ring (24) at opposite side.Sliding bearing (8) has been housed on support, and by sliding bearing (8) supporting rotating shaft (7).In the middle of running shaft, spline, helical blade fixedly holds out against by flat key (25) and the shaft shoulder of running shaft (7).6 permanent magnets (9) are evenly installed on the ring dress cylinder exterior edge face of helical blade (6), and itself and main cavity (4) inwall leave gap.The outer middle side part of main cavity (4) leaves coil groove, places copper coil (17).Copper coil outside disposes coil seal closure (3), plays encapsulated coil, and seal closure is fixing by two ends mechanical seal ring (10) sealing simultaneously.In the middle of seal closure (3), have wire groove (15) and facilitate copper coil (17) cabling.
The material of main cavity (4) is Austenitic Stainless Steel, and its permeability approaches air.In the time that rotation blade (6) rotates, the permanent magnet (9) of blade end rotates thereupon, and the magnetic line of force of copper coil (17) the cutting permanent magnet in main cavity (4) outside produces alternating voltage.Again because 6 copper coils (17) are interconnected spaced apart in main cavity (4) wall outside between two, therefore copper coil generation is three-phase alternating voltage.
As shown in Figure 6,2 coil seal closures are closely connected by bolt (14), compression spring (13), nut.One lateral coil seal closure (3) has thread hole (18), and the threephase AC that electricity generating device produces flows to three phase current inverter storage battery (20) through thread hole (18), converts it into direct current memory by using.This place, by rectangle mechanical seal ring (21) sealing, is sealed by sealing cover (22).
Can find out submarine pipeline self-generating device of the present invention from above, a kind of safety really, life-span long, reliably, can independently realize the seabed electricity generating device of electricity generate function.
Illustrate flow and the power in this with an example below.
(1)when using new seamless steel pipe, its absolute roughness:
Figure 766580DEST_PATH_IMAGE030
.
Pipe parameter is: L=1m, and D=0.5m,
Figure 597395DEST_PATH_IMAGE031
=1.3m, d=0.2m,
Figure 858613DEST_PATH_IMAGE032
Pipeline inner fluid is crude oil, main pipeline flow velocity before shunting:
Figure 324229DEST_PATH_IMAGE033
=1m/s
Table look-up, the kinematical viscosity of crude oil:
Figure 379910DEST_PATH_IMAGE034
Branch pipe(tube) ingress local loss coefficient:
Figure 531029DEST_PATH_IMAGE035
Primary branch road relative roughness: ,
Find from Moody chart rough region primary branch road along journey damping constant:
Figure 142641DEST_PATH_IMAGE038
,
Figure 682469DEST_PATH_IMAGE039
.
Total discharge before shunting:
Figure 285489DEST_PATH_IMAGE040
Tentative calculation error:
Figure 256856DEST_PATH_IMAGE041
.
Tentative calculation for the first time, get the rear main pipeline flow of shunting:
Figure 654339DEST_PATH_IMAGE042
Main pipeline loss of head:
Figure 944113DEST_PATH_IMAGE043
Branch pipe(tube) flow is:
Due to
Figure 176697DEST_PATH_IMAGE045
.
Tentative calculation is for the second time got:
Figure 745082DEST_PATH_IMAGE046
All the other steps obtain with tentative calculation for the first time:
Hence one can see that primary branch road Reynolds number:
Figure 876428DEST_PATH_IMAGE048
,
Figure 291229DEST_PATH_IMAGE049
With the correction of Bai Laxiusi formula along journey damping constant:
Figure 561673DEST_PATH_IMAGE050
Figure 327504DEST_PATH_IMAGE051
By the same steps tentative calculation of above tentative calculation, finally meet error requirements and draw:
Figure 951383DEST_PATH_IMAGE052
Further obtaining primary branch road flow velocity is:
Figure 984805DEST_PATH_IMAGE053
。
(2)the radial length of fluid, cavity material, air: .
Blade radius:
Figure 413698DEST_PATH_IMAGE055
Permanent magnet coercivity and area:
Figure 965902DEST_PATH_IMAGE056
Coil is pricked number and resistance:
Figure 856760DEST_PATH_IMAGE057
Fluid, cavity material, air permeability:
Figure 203428DEST_PATH_IMAGE058
Blade tip speed: .
Radially magnetic resistance of three kinds of media:
Figure 643954DEST_PATH_IMAGE060
。
Magnetic flux maximum value:
。
Blade rotational speed:
Figure 903957DEST_PATH_IMAGE062
。
Coil flux is:
Figure 131676DEST_PATH_IMAGE063
.
Each coil both end voltage is:
。
Generating total output is:
Figure 389668DEST_PATH_IMAGE065
。
According to above-mentioned computational process, further can be calculated: when main pipeline flow velocity before shunting
Figure 219084DEST_PATH_IMAGE066
when=1 ~ 2m/s, the main pipeline flow velocity after shunting is:
Figure 169985DEST_PATH_IMAGE067
=0.933 ~ 1.862m/s, the branch pipe(tube) flow velocity after shunting =0.418 ~ 0.8607m/s, generated output .Can find out from calculating, lateral flow velocity can meet generating basic demand.

Claims (5)

1. a submarine pipeline self-generating device, it is to utilize in submarine pipeline to carry fluid (liquid or gas) to promote helical blade (6), thereby drive the device of generator generating, it is characterized in that: on the main pipeline (1) of conveyance conduit, offer branch pipe(tube) (2), electricity generating device main cavity (4) is arranged on branch pipe(tube) (2), main pipeline (1) is equipped with filter screen (11) with branch pipe(tube) (2) connectivity part, the permanent magnet (9) of electricity generating device is fixed on the support outside of helical blade (6), the field coil of electricity generating device is arranged on the periphery of main cavity, and by coil seal closure (3) sealing.
2. submarine pipeline self-generating device according to claim 1, is characterized in that: in order to improve the impact momentum of fluid to helical blade (6), in the rear and front end of helical blade (6), cowling (5) is installed.
3. submarine pipeline self-generating device according to claim 1, is characterized in that: in order to improve explosion-proof and the Security of electricity generating device, field coil is arranged on to the outside of branch pipe(tube) (2).
4. submarine pipeline self-generating device according to claim 1, is characterized in that: the fixed place at electricity generating device main cavity (4) and branch pipe(tube) (2) is provided with seal ring (10).
5. submarine pipeline self-generating device according to claim 1, is characterized in that: in order to improve the stability of helical blade (6), between helical blade (6) and running shaft (7), corrosion-resistant sliding bearing (8) is installed.
CN201410066146.6A 2014-02-26 2014-02-26 Self power generation device of submarine pipeline Pending CN103790757A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394867A (en) * 2017-08-09 2017-11-24 张勤建 A kind of supply unit of pipe-line transportation system remote sensing monitoring platform
CN108843505A (en) * 2018-05-22 2018-11-20 苏州市智水环境科研技术有限公司 A kind of floating box type generating set for water treatment facilities

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1858434A (en) * 2005-05-02 2006-11-08 刘成江 Submerging type axial through flow hydropower generator
US20070145751A1 (en) * 2005-09-01 2007-06-28 Roos Paul W Integrated Fluid Power Conversion System
CN201292909Y (en) * 2008-02-18 2009-08-19 蒋明兴 Negative-pressure hydroelectric generating set
CN202117831U (en) * 2011-03-21 2012-01-18 中国人民解放军总后勤部油料研究所 Self-holding type power generation device based on oil transportation power of pipeline
CN102723840A (en) * 2012-06-26 2012-10-10 张珩 Circumference magnet-cutting fluid power generation device
CN103388548A (en) * 2013-08-16 2013-11-13 重庆同利实业有限公司 Direct hydraulic turbine generator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1858434A (en) * 2005-05-02 2006-11-08 刘成江 Submerging type axial through flow hydropower generator
US20070145751A1 (en) * 2005-09-01 2007-06-28 Roos Paul W Integrated Fluid Power Conversion System
CN201292909Y (en) * 2008-02-18 2009-08-19 蒋明兴 Negative-pressure hydroelectric generating set
CN202117831U (en) * 2011-03-21 2012-01-18 中国人民解放军总后勤部油料研究所 Self-holding type power generation device based on oil transportation power of pipeline
CN102723840A (en) * 2012-06-26 2012-10-10 张珩 Circumference magnet-cutting fluid power generation device
CN103388548A (en) * 2013-08-16 2013-11-13 重庆同利实业有限公司 Direct hydraulic turbine generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394867A (en) * 2017-08-09 2017-11-24 张勤建 A kind of supply unit of pipe-line transportation system remote sensing monitoring platform
CN108843505A (en) * 2018-05-22 2018-11-20 苏州市智水环境科研技术有限公司 A kind of floating box type generating set for water treatment facilities

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Application publication date: 20140514