CN1074822C - Arrangment in pipe bundle - Google Patents
Arrangment in pipe bundleInfo
- Publication number
- CN1074822C CN1074822C CN 97101845 CN97101845A CN1074822C CN 1074822 C CN1074822 C CN 1074822C CN 97101845 CN97101845 CN 97101845 CN 97101845 A CN97101845 A CN 97101845A CN 1074822 C CN1074822 C CN 1074822C
- Authority
- CN
- China
- Prior art keywords
- pipeline
- heat
- pipe
- carrying pipe
- carrying
- 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
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The present invention relates to a pipeline bundle and a method used for heating a pipeline conveying oil, gas and water on the sea bottom or the shore. The quantity of heating cables can be reduced, the manufacture is simple, and the pipeline and inner contents of the pipeline can be heated. The method has the following steps: the pipeline is arranged in a cylindrical outer bearing pipe which is provided with an outer heat insulating component and/or an inner heat insulating component; at least one longitudinal energy carrier is arranged in the bearing pipe and longitudinally extends to directly or indirectly diffuse and transmit the heat to the pipeline, the pipeline bundle or a plurality of pipeline bundles and the inner contents of the pipeline bundles.
Description
The present invention relates to conduit bundles, relate to a kind of heating seabed or shore pipeline particularly, and the method for relevant pipe-line system.
Usually, the oil in seabed, gas and water are to be transmitted by the independent tubes that is used for different mediums.From Hai Jing when heterogeneous product is transmitted in a platform or onshore base, come fluid in the artesian well can comprise the mixture of oil, gas and water.
In the transport process of seabed, pipeline and its content can be cooled to 3 ℃ bottom-water temperature.
Transmitting not stabilizedly when oily, this cooling may impel wax viscosity and/or the wax deposit amount on the pipe surface of cooling to increase, and this may make to flow and stop up.
Correspondingly, cold excessively multiphase flow is under high pressure known from experience further formation hydroxide, and they can block pipeline, and cleaning work needs Hua Shihe to spend.
Owing to this reason, temperature there is the pipe insulation of requirement, and the deposition that can hinder hydroxide and the chemical substance of formation often are provided.Another kind method is the pipeline of electric heating thermal insulation, so that temperature remains on more than 20 ℃ usually.
The laying expense of independently process pipe that is used for the injection etc. of product and gas and water has been represented with near platform laying, has been buried and installed relevant basic charge.
A kind of straightforward procedure of this work is that process pipe is concentrated in the alleged usually pipeline or conduit bundles, and these pipelines all keep certain spacing mutually therein.
For, especially for the support performance of reinforced structure, process pipe is provided protection, simplifies purposes such as layings, conduit bundles often is installed in the periphery with suitable performance and carries in the pipe.
Temperature is had the process pipe of requirement, and known have the process pipe of annotating the preheating water filling, or the pipe special loop that carries pre-thermal medium can be used to heat this conduit bundles.This conduit bundles must have an external insulation part and should be full of liquid and/or the gas that is used for distributing and transmitting heat.
Owing to when liquid transmits, need on the whole length of pipeline, sufficiently high temperature be arranged, in long pipeline so this mode of heating is subject to significant restrictions.
Disclosed a kind of fluid-duct-system of thermal insulation in the European patent the 0 521 No. 582 (EP 0,521 582 Colemann-Kammula/Shell Int.), comprise at least one fluid line that is installed in the carrying pipe, between described fluid line and carrying pipe, adopt spacer so that fluid line is held in place.In its Fig. 3, show at least one cable that is used at least one fluid line of electric heating, just as claim 8 in its open text is described.
Yet, from the embodiment shown in Fig. 3 as can be known, this invention suggestion is heated a single fluid line with three cables, fluid line is surrounded by a thermal insulation barriers, this thermal insulation barriers comprises three separate chamber that particle is housed, and in the hole between described particle air is arranged, described these chambers leave a space betwixt to be used for holding described cable respectively.
According to No. the 0 521 582, European patent, especially according to the content of the 9th of its claims, obviously in the cable any one all can be installed in around fluid pipe-line itself on every side a part and between first and second chambers of the longitudinal extension of fluid pipe-line system, therefore, here there is not the problem of heating carrying pipe, and can be described as the single fluid line of direct heating one.
Similar according to the version that discloses in the 0 521 No. 582 described prior art solution of European patent and the 170 No. 695 people/Aker Engineering/Alcatel STK such as () Grosvik, corresponding to No. the 5 256 844, U. S. Patent, in its open text, suggestion is heated single pipe with cable, and is wherein leaving the space that current supply cable is used in the thermal insulation barriers of described single pipeline.
In the prior art, adopting electric conductor that each pipeline is carried out induction heating, is to be finished by the electrically conducting member the pipe insulation spare that is arranged on around the pipeline integratedly from also can learn this corresponding to No. 90/05266, WO the 174 No. 068 (Ahlen/Den norske stats oljeselskap) (its open text is incorporated by reference in this article).
The present invention relates to the 170 No. 695 with the 174 No. 068 described in, the relevant further improvement that adds the heat utilization technology with the irritability and the resistive of electric energy.However, the present invention has opened up and has been used to transmit and has distributed the outside of heat and/or the carrying pipe heating whole pipe bundle of internal insulation, rather than only heats the road of single pipeline, and its particular content is as described in the appending claims.
U. S. Patent the 4 789 230 (Hopperdietzel) relates to a kind of heatable plastic sheath, it has transversal central point and jacket wall, this jacket wall surface within it go up to form a vertical cavity, and this chamber has a transversal central point, the transversal central point lateral offset of it and tubular sheath.Yet, in this patent specification, do not advise the heating pipe bundle, and only relate to the carrying pipe that surrounds a plurality of independent tubes.
U. S. Patent the 4 653 541 (Oehlschlaeger) relates to a kind of assembly of double walled safety pipe, comprise a plurality of fluid lines that are arranged in the external bearer pipe, but also without any the expression of the carrying pipe that adds thermal insulation, one heating cable that is wrapped in around the internal flow pipeline is just arranged, so it and the present invention are diverse.
U. S. Patent the 3 315 703 (people such as Matthews) relates to a kind of composite pipe, comprise core flow transmission core body, be provided with a plurality of heat transfer pipes that are used for heated fluid carrying core body around it, the conduit bundles that this system and application involved in the present invention, i.e. heating are arranged in the carrying pipe is distinguishing.
Other open file that relates to the heating of pipeline and sleeve pipe has GB 2 084 284-a (Hoshira), No 164942 (Bilstad/Den norske stats oljeselskap) and US 5 381 511 people such as () Baker.
One object of the present invention is to design a kind of new application of utilizing irritability, capacitive character and the resistive heating pipe bundle of electric energy.
Another object of the present invention is to found a kind of along the carrying pipe or at carrying pipe or conduit bundles end heating pipe bundle with transmit the associated form that electric energy is given consumer.
A further object of the present invention is to provide a kind of heating system, compares with the pipeline that electric heating is single, and wherein used number of cables obviously reduces.
Another purpose of the present invention is to provide a kind of heating system, because the production of this system can be carried out on the coast and is only relevant with the length of a pipe, installs so simplified the cable that is connected with conduit bundles.
Above-mentioned purpose can realize that its feature is is all recorded and narrated in appending claims by arrangment in pipe bundle according to the present invention.
Be used for heating the seabed or pipeline on the bank, especially heating are used to transmit the method for the pipeline that is substantially oil, gas and water a kind of, described conduit arrangements becomes a branch of or multi beam, they all are preferably disposed in the columniform outer carrying pipe, the method is characterized in that according to the present invention:
-for described carrying pipe provides an outside and/or inner thermal insulation barriers,
-be respectively applied at the energy carrier that one or more longitudinal extensions vertically are provided of described carrying pipe heat directly and/or indirectly is transported to described pipeline, a described conduit bundles or a plurality of conduit bundles, thus be transported to described ducted content.
Be used for heating the seabed or pipeline on the bank, especially heating are used to transmit the system of the pipeline that is substantially oil, gas and water a kind of, described conduit arrangements becomes a branch of or multi beam, they are preferably disposed in the columniform external bearer pipe, the system is characterized in that according to the present invention:
-described carrying pipe comprises an outside and/or inner thermal insulation barriers,
-described carrying Guan Zaiqi vertically is provided with the energy carrier of one or more longitudinal extensions, be used for heat directly and/be delivered to described pipeline, described conduit bundles or a plurality of conduit bundles indirectly respectively, thereby be delivered in the content of described pipeline.
Other features and advantages of the present invention can be from further understanding obtaining embodiment's description and the appended patent claims below in conjunction with accompanying drawing.
Fig. 1 is the schematic section of the conduit bundles in a carrying pipe, shows when the carrying pipe has the external insulation part, and cable is how to be installed in the first embodiment of the invention.
Fig. 2 is the schematic section of conduit bundles, shows when the carrying pipe has inner thermal insulation barriers, and cable is how to be installed in the second embodiment of the invention.
Fig. 3 is the longitudinal section schematic representation that runs through conduit bundles, shows cable and is how to install according to the present invention and is connected, and be how to be that electric heating and power supply are used.
Fig. 4 is the longitudinal section schematic representation, shows a concrete electric connecting mode, wherein the effective electric loop conductor of doing of the carrying of conduit bundles.
Fig. 5 is the vertical profile schematic representation that runs through an embodiment of the conduit bundles of carrying in the pipe, and wherein electric connecting mode is to adopt a pipeline in the conduit bundles as the electric loop conductor.
Fig. 6 is the cross-sectional view of another embodiment's arrangment in pipe bundle, and this conduit bundles comprises that two are included in a process pipe in the carrying pipe, and this carrying pipe is carrying an external insulation part, and heating cable herein is arranged to the three-phase system of 50/60Hz.
Fig. 7 is another embodiment's of an arrangment in pipe bundle of the present invention cross-sectional view, and heating cable herein is arranged to the three pole reactor system of 200Hz.
Fig. 8 is another embodiment's of an arrangment in pipe bundle of the present invention cross-sectional view, and a heating cable that wherein carries the 50/60Hz electric current is used for direct heating.
Shown in Fig. 1 be cross-sectional view according to first kind of structure of conduit bundles of the present invention, there is shown a roughly cylindrical external bearer pipe 1, it is preferably made by ferromagnetic steel.
This carrying pipe 1 has had an external insulation part 2, promptly on the outer surface of described carrying pipe 1.Three electric conductors 3,4,5 suitably are installed in the inside of inwall He its thermal insulation barriers 2 of described carrying pipe 1, and described electric conductor 3,4,5 extends along the whole length direction of described carrying pipe 1 basically.Electric conductor 3,4,5 remain on the position relevant with carrying pipe 1 by the shelf of general toroidal and guiding device 6, and this shelf and guiding device 6 also remain on a plurality of process pipes 8 and cable 7 on the relevant position with the carrying pipe 1 of described external insulation.Described cable 7 can suitably be housed in the raceway 7 '.Dotted line 6 ' expression one nylon lining.
By diffusion or transmit the process pipe 8 that heats from the electric energy of described electric conductor 3,4,5 and can be used to guide water, gas and wet goods material.Under the heterogeneous transmission situation of described material, mixture is under the high pressure often, and is easy to generate hydroxide and wax deposit at low temperatures.
Supply cable 7 can comprise low tension power supply and data cable, and one or more pipeline that is used for hydraulic oil, and can be by being included in described independently pipeline or the raceway 7 ' and electric field shielding.
In addition, one or more process pipes 8 can be disturbed to get rid of heat by thermal insulation.
In the embodiment shown in fig. 1, a kind of structure of suggestion comprises three electric conductors 3,4 and 5, and they can suitably be included in the three phase current electric system.Yet, should be appreciated that used electric conductor quantity also can be different, for example adopt two electric conductors in monophase system or DC circuit.In order to increase to being arranged on the heating efficiency of the pipeline in the carrying pipe, can consider to adopt at least one auxiliary conductor, this auxiliary conductor can suitably be distributed in carrying pipe periphery.Certainly, electric conductor 3,4 and 5 also can be used in low frequency and the high frequency ac circuit.Be used for the just necessary employing of the described heating frequency higher in order to respond to the energy that produces bigger quantity effectively than 50Hz.
And, should be appreciated that carrying pipe 1 can be full of any liquid, this liquid is used for heat is assigned to internal pipeline and the content wherein from cable.
According to the electrical system that is used for being connected with electric conductor, the heating of conduit bundles can be based upon on induction or resistance heating mode or the mode basis that both have concurrently.In the embodiment shown in fig. 1, thermal insulation barriers 2 is arranged on the outer surface of carrying pipe 1, and electric conductor 3,4 and 5 is directly contacted with described carrying pipe 1 may be comparatively suitable.
Therefore, when any Ac is transported on the electric conductor, by the Ohmic losses in one or more parallel electrically conductive bodies and be created in the carrying pipe metallic material in the electric induction loss just can realize the heating.The basis of calculating the heat that is used for the heating pipe bundle produced is ohm relevant with electromagnetic relationship and Maxwell's equation.
To further distribute to internal pipeline by electric conductor to carrying pipe diffusion or energy delivered loss, this is that carrying in the pipe is full of liquid because when being used in environments such as subsea in the time.In the facility, alternately full of liquid and/or gas are managed in carrying on the coast.
In the embodiment shown in fig. 1; and among other embodiment who is discussed hereinafter; pipeline all is protected well and avoids being subjected to exterior mechanical and damage; obtained obvious preferable heat diffusion effect simultaneously; this is because there is not the electric energy of energy loss or generation to be diffused on every side in the medium, but is used for heating in carrying pipe inside fully.
Fig. 2 is second kind of embodiment's of apparatus of the present invention a cross-sectional view, and the carrying pipe 101 that a suitable ferromagnetic steel is made is shown, and just a thermal insulation barriers 102 is arranged on its internal surface in this embodiment.Similarly, in this embodiment, vertically be provided with three electric conductors 103 along carrying pipe 101,104 and 105, described electric conductor 103,104 and 105 are held in place by a shelf and guiding device 106, and this shelf and guiding device 106 also remain on internal process pipeline 108 and cable 107 with the carrying of internal insulation and manage on the 101 relevant positions.Equally, dotted line 106 ' expression one nylon lining.
In the present embodiment, electric conductor 103,104 and 105 can suitably be arranged on the surface of thermal insulation barriers 102 or its, and they also have with heat directly and/or spread with receiving or be delivered to described each pipeline 108 herein, be the function on the conduit bundles defined herein, and thus and then diffusion or be delivered in the content of described pipeline or conduit bundles.
Figure 3 illustrates an embodiment's who runs through arrangment in pipe bundle longitudinal section, it and embodiment shown in Figure 2 are similar, the power pack 9 that wherein also shows a distribution box 10 and be used to connect described cable 103,104 and 105.For Offshore Units, distribution box 10 and power pack 9 can make waterproof type, especially under the bigger situation of the depth of water, and be for the electrical connector particular design of insulation.When without electronic equipment, the electric conductor 103,104 that is connected with a multiphase system and 105 can be connected a star terminal connector, thereby a loop is provided, and it may only can be used for heating pipe 108 and content wherein.
In Fig. 3, also show power supply unit 12, its function is to distribution box 10 and relevant electronic equipment 9 power supplies when regulating described carrying pipe 101 heating.This adjusting can be adjusted to 500Hz from 0Hz with frequency.When 0Hz, this device will only relate to critical Ohmic heating as a DC circuit job, not have induction heating.
Magnitude of voltage can be done suitable selection, and frequency generally can be from 0 to 500Hz variation, and this depends on induction loss degree that calculates and the frequency that equipment adopted that may connect.
Should be appreciated that discontinuous operation is admissible.First kind of working method can be the induction heating under a suitably high frequency so.When not needing to heat, identical cable can be transformed into second kind of working method of carrying out low frequency power supply.So because the resistance heating of slippages will be as a side effect to pipeline and the heating of its content.
Therefore, electric conductor at one end portion is connected on the power supply 12, and the other end is connected on the power distribution unit 10 to change different working methods.
In addition, even one or two a plurality of electric conductors can be connected to different power supplys and the cable that shielded on, any induction heating can not take place in them.
A kind of arrangment in pipe bundle shown in Figure 4 is included at least one cable 203 in single-phase or the two-phase heating system, and wherein metal carrying pipe 201 is as the electric loop conductor.
In Fig. 4, the two-phase that also shows power supply 212 is how to be connected on two electric conductors 203 and 204 that are used for conventional induction heating, third phase then is connected on the carrying pipe 201 by a connector 211 at power end, and is connected on the connector on the end opposite 210.
Fig. 5 shows and is electrically connected accordingly in conjunction with described relevant one of Fig. 4, just in the process pipe 308 herein is owing to having a front connector 314 and an end connector 313 is used as the loop electric conductor, and the electric conductor 303 of a routine is then finished current path.
In fact, relevant with the diffusion of the electric energy that is used to heat or transmission or electric energy loss cable is to carry out work with the resistance hybrid mode relevant with induced action.When frequency equals 0, promptly during direct current, heat produce will be merely based on the resistance diffusion of electric energy or transmit, and under the situation of other frequency or Ac, induction loss also will exert an influence to the conduit bundles discussed or the heating of a plurality of conduit bundles.
Fig. 6-the 8th, the cross-sectional view of some signals shows the version as the principle of work and power on basis of the present invention, promptly by heating cable, induction cable and the direct method and apparatus of heating or its hybrid mode heating pipe bundle.
In the embodiment of Fig. 6, at one 28 " suitably adopted two 10 in the carrying pipe 401 " process pipe 408, it is by perveance K=0.15W/m ℃ 60mm thermal insulation barriers 402 thermal insulation that this carrying manages 401.If calculate inside temperature when ambient temperature is 5 ℃ is 30 ℃, and this will need the heat effect of 150W/m.In a 50/60Hz three-phase electrical system, can adopt three copper electric conductor cross sections to be 240mm
2Cable 403,404 and 405.For example, for the practical application of the long conduit bundles of a 10km, will be referred at voltage U=3.7KV, rated current I
fUnder the situation of=850A, transmission of electricity P
Tot=1.7MW.
Fig. 7 is another embodiment's of an arrangment in pipe bundle of the present invention cross-sectional view, and wherein the three-phase induction system of 200Hz is adopted in suggestion.In voltage U=8KV, nominal electric current I
fUnder the situation of=410A, transmission capacity will be P
Tot=1.55MW.
Fig. 8 is the cross-sectional view according to another embodiment of bunch of cables structure of the present invention, is by an electric conductor direct heating can take place under the 50/60Hz condition in frequency wherein.In voltage U=4.5KV, electric current I
fDuring=600A, transmission capacity P
Tot=1.58MW.
Compare with the prior art that is used for the heating products pipeline, the present invention is from practical operation, economy and ecology Learn on the characteristic and all have significant advantage and progress. Existing skill with NO.174 068 and NO.170 695 Art is compared, and the present invention has saved cable significantly, and this is because only heat a plurality of pipes with one group of parallel cable The road. And according to structure of the present invention, it is easily that cable is installed in the carrying pipe, and this is because its system Make can carry out on the coast and only with the carrying pipe joint length relevant.
Although the effect to capacitance current that it is also understood that not is described in detail, yet, according to what will use Voltage, frequency and load, this electric current can be used to control the electric parameter relevant with whole system.
And, should be appreciated that the definition of conduit bundles should cover any amount of pipeline, i.e. one or more pipes The road is included in the carrying pipe.
Claims (24)
1. method that is used to heat seabed or shore pipeline, especially heating is used to transmit haply the method for the pipeline of oil, gas and water, described pipeline (8,108,208) is arranged on a roughly cylindrical external bearer pipe (1,101,201) in, it is characterized in that: heat described pipeline (8,108,208) method comprises :-be that described carrying pipe (1,101) provides an outside (2) and/or inner (102) thermal insulation barriers (2; 102) ,-at the energy carrier that one or more longitudinal extensions vertically are provided (3,4,5 of described carrying pipe (1,101); 103,104,105), be used for respectively heat directly and/or indirectly being spread/being delivered to described pipeline (8,108), described conduit bundles or a plurality of conduit bundles, and and then be delivered in the content in the described conduit bundles.
2. the method for claim 1 is characterized in that: adopt a kind ofly to be full of fluid, preferably to be the carrying pipe (1,101) of liquid or gas, and with heat from energy carrier (3,4,5; 103,104,105) be delivered to conduit bundles in described pipeline (8,108), the described carrying pipe (1,101), and and then be delivered on the content of described transfer canal (8,108).
3. method as claimed in claim 1 or 2 is characterized in that: energy carrier is one, two or several electric conductor (3,4,5; 103,104,105), they extend along the heat insulation wall (2,102) of described carrying pipe (1,101) with very approaching relation the vertical of described carrying pipe (1,101).
4. method as claimed in claim 3 is characterized in that: adopt a heat insulation carrying pipe (1,101) of being made by conductive material, and be used to respond to the electric conductor (3,4,5 with the carrying energy of resistance heating; 103,104,105).
5. as claim 3 or 4 described methods: it is characterized in that: the electric conductor of used carrying energy (103,104,105) is arranged on carrying and manages in the inner thermal insulation barriers (102) of (101) or on it.
6. as claim 3 or 4 described methods: it is characterized in that: as described in the electric conductor (3,4,5) of carrying energy be arranged to directly against the internal surface of carrying pipe (1), this carrying pipe has an external insulation part (2).
7. the method for claim 1 is characterized in that: to energy carrier (3,4,5; 103,104,105) input one electric current, its frequency are from 0 to about 500Hz or bigger, and this depends on the degree of resistance and/or induction heating.
8. the method for claim 1 is characterized in that: in the intermittently used mode with described energy carrier (3,4,5; 103,104,105) heating, described energy carrier in the different operating mode is used for different energy supplies, for example electric current input, wherein slippages will be made contributions to previous mode of heating.
9. the method for claim 1, it is characterized in that: used energy carrier, especially electric conductor (103,104,105), one end are connected on the power supply (12), and the other end is connected to a switch gear (10) and goes up to change various modes of operation (9).
10. the method for claim 1 is characterized in that: adopt one or more independent tubes and/or carrying pipe as electric road conductor and heat diffusion element.
11. the method for claim 1 is characterized in that: adopt single-phase or two-phase power supply links to each other with the heat carrier of respective numbers, especially link to each other with a joint of some shielded cables with very little induction heat.
12. the method for claim 1 is characterized in that: the energy carrier (3,4,5 of the pipeline of conveying products is managed and is used to heat in pipeline, carrying; 103,104,105) all adopt the assembly of making on the bank.
13. one kind is used to heat seabed or shore pipeline, is substantially the system of the pipeline of oil, gas and water, described pipeline (8,108 in particular for transmission, 208) be arranged on a roughly cylindrical external bearer pipe (1,101,201) in, it is characterized in that: described system comprises :-have an outside and/or inner thermal insulation barriers (2,102) carrying pipe (1,101) ,-energy carrier (3 of one or more longitudinal extensions along described carrying pipe (1,101), 4,5; 103,104,105), be used for heat directly and/or indirectly being spread/being delivered to described pipeline (8,108), described conduit bundles or a plurality of conduit bundles, and in the content of described pipeline.
14. system as claimed in claim 13 is characterized in that: comprise one be full of fluid, preferably for the carrying pipe (8,108) of liquid or gas, be used for heat from energy carrier (3,4,5; 103,104,105) be delivered in the content of conduit bundles in described pipeline (8,108), the described carrying pipe (1,101) and described transfer canal (8,108).
15., it is characterized in that: one, two or several electric conductor (3,4,5 as claim 13 or 14 described systems; 103,104,105) as energy carrier, they vertically extend along the heat insulation wall (2,102) of described carrying pipe (1,101) with very approaching relation described carrying pipe (1,101).
16. system as claimed in claim 15 is characterized in that: comprise the heat insulation carrying pipe of making by conductive material (1,101), and be used to respond to the electric conductor (3,4,5 that the energy with resistance heating carries; 103,104,105).
17., it is characterized in that as claim 15 or 16 described systems, comprise the electric conductor (103,104,105) that described energy carries, be arranged on carrying and manage in the inside thermal insulation barriers (102) of (101) or on it.
18., it is characterized in that: comprise the electric conductor (103,104,105) that energy carries and directly lean against on the internal surface of carrying pipe (1) with an external insulation part (2) as claim 15 or 16 described systems.
19. system as claimed in claim 13 is characterized in that: a power supply (12) is to energy carrier (3,4,5; 103,104,105) frequency of delivery is 0 to about 500Hz or bigger electric current, and this depends on the degree of resistance and/or induction heating.
20. system as claimed in claim 13 is characterized in that: have an adjusting and conversion equipment (9) to be used for regulating by described energy carrier (3,4,5; 103,104,105) by the heating that intermittent duty carried out, described energy carrier is used to different energy in different working methods and supplies with, for example electric current input, and wherein slippages will be made contributions to previous mode of heating.
21. system as claimed in claim 13 is characterized in that: comprise energy carrier, especially electric conductor (3,4,5), the one end is connected on the power supply (12), and its other end is connected to one and is used to change the switch gear (10) of various working methods (9).
22. system as claimed in claim 13 is characterized in that: comprise one or more independently pipelines and/or carry effective electric loop conductor and the heat diffusion element done.
23. system as claimed in claim 13 is characterized in that: single-phase or two-phase power supply is used to be connected to the heat carrier of respective numbers, especially is connected to a joint of each shielded cable with less induction heat.
24. system as claimed in claim 13 is characterized in that: comprise a pipeline of making on the bank, carry the energy carrier (3,4,5 of managing and being used to heat the pipeline that transmits product; 103,104,105) assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101845 CN1074822C (en) | 1997-02-14 | 1997-02-14 | Arrangment in pipe bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101845 CN1074822C (en) | 1997-02-14 | 1997-02-14 | Arrangment in pipe bundle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1190713A CN1190713A (en) | 1998-08-19 |
| CN1074822C true CN1074822C (en) | 2001-11-14 |
Family
ID=5166020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97101845 Expired - Fee Related CN1074822C (en) | 1997-02-14 | 1997-02-14 | Arrangment in pipe bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074822C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928022B (en) * | 2020-07-21 | 2022-03-15 | 东营市乾润石油工程技术服务有限责任公司 | Heat-insulating petroleum pipe with double-layer inner supporting structure |
| CN112648436B (en) * | 2020-12-29 | 2022-03-22 | 中国石油大学(北京) | Bundling submarine pipeline |
| CN114992515A (en) * | 2021-03-01 | 2022-09-02 | 中国石化工程建设有限公司 | Liquefied natural gas and superconducting energy simultaneous transportation pipeline |
-
1997
- 1997-02-14 CN CN 97101845 patent/CN1074822C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1190713A (en) | 1998-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2304392A (en) | Heated pipeline assembly | |
| US4704514A (en) | Heating rate variant elongated electrical resistance heater | |
| RU2090016C1 (en) | Electric heating system | |
| US7381900B2 (en) | Power cable for direct electric heating system | |
| CA2574320C (en) | Subterranean electro-thermal heating system and method | |
| US5713415A (en) | Low flux leakage cables and cable terminations for A.C. electrical heating of oil deposits | |
| GB2341442A (en) | A heating system for crude oil pipelines | |
| JP5922922B2 (en) | Superconducting cable, superconducting cable cooling device and cooling method | |
| US9779856B2 (en) | Arrangement for cooling power cables, power umbilicals and cables | |
| CN101605965B (en) | Subterranean electro-thermal heating system and method | |
| GB2324947A (en) | Oil well heater cable | |
| CN106796827A (en) | Submerged cable and submerged cable operating method | |
| CN1074822C (en) | Arrangment in pipe bundle | |
| EP2870610B1 (en) | Heat dissipation in a power cable or a power umbilical | |
| RU93130U1 (en) | HEATED PIPELINE | |
| CN1507529A (en) | Electrical well heating system and method | |
| CN114641641A (en) | Electric heating system for pipeline | |
| WO2010079318A1 (en) | System for heating a pipeline | |
| CN85109703A (en) | Long underground interval heating means of distance of high temperature and device | |
| GB2582178A (en) | Subsea installations comprising heated conduits | |
| CA2197405C (en) | Arrangement in a pipe bundle | |
| US20210180436A1 (en) | Subsea Installation for Heating a Two-Phase Liquid/Gas Effluent Circulating Inside a Subsea Casing | |
| CN212056185U (en) | Device for heating crude oil pipeline by graphene film | |
| CN112949012A (en) | Method and system for reducing thermal resistance of surrounding soil and improving cable transmission capacity | |
| JPH04244693A (en) | Joint device for pipe line heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FINADKINS Free format text: FORMER OWNER: CAUAC ENGINEERING AS Effective date: 20030103 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20030103 Address after: Norway sidate wall Patentee after: Finn A Seth Address before: Oslo Patentee before: Aker Engineering AS |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011114 Termination date: 20150214 |
|
| EXPY | Termination of patent right or utility model |