WO2011141219A1

WO2011141219A1 - Arrangement and method for supplying energy to pipeline monitoring devices, and use of said arrangement in a pipeline

Info

Publication number: WO2011141219A1
Application number: PCT/EP2011/054675
Authority: WO
Inventors: Martin Kautz; Jochen SCHÄFER
Original assignee: Siemens Aktiengesellschaft
Priority date: 2010-05-10
Filing date: 2011-03-28
Publication date: 2011-11-17
Also published as: DE102010028793A1

Abstract

The invention relates to an arrangement and a method for supplying energy to pipeline monitoring devices (7), comprising a pipe section (1) of a pipeline through which a fluid (2) can flow, at least one turbine that has at least one rotor (3), and at least one generator (4). The at least one rotor (3) is disposed inside the pipe section (1) of the pipeline and is designed such that energy is transmitted from the at least one rotor (3) to the at least one generator (4). The invention further relates to a pipeline for transporting natural gas or oil in which the arrangement of the invention is disposed at predetermined equal intervals.

Description

description

Arrangement and method for powering pipeline monitoring devices and use of the arrangement in a pipeline

The present invention relates to an arrangement and a method for power supply of pipeline monitoring devices, comprising a pipe section of a pipeline, which can be traversed by a fluid, with at least one turbine, which has at least one impeller, and with we ^¬ at least one generator. Furthermore, the present invention relates to a pipeline for transporting gas or oil using the inventive arrangement.

Pipelines for natural gas or oil often lead through uninhabited, climatically extreme terrain. To monitor a pipeline, monitoring, measuring or monitoring stations are installed at regular intervals, eg every few kilometers. These stations require electrical energy, eg for sensors and data transmission. A typical value of electrical power needed for such a station is 5kW. A reliable power supply in inaccessible areas is a major challenge is generating high costs and is often to ensure only high on ^¬ wall.

Usually, small gas engines are operated with generators for power supply in the stations. Alternatively, diesel engines can be used instead of gas. The Moto ^¬ ren with generators need to be redundant because of the security of supply. This increases the costs and leads to a high space consumption and maintenance. Relatively short maintenance intervals additionally increase the maintenance and maintenance costs.

The object of the present invention is therefore to provide an arrangement and a method for supplying power to pipeline Specify monitoring devices that work reliably, require low maintenance and generate low costs. Furthermore, it is an object of the present invention to provide a pipeline for the transport of gas or oil, which can be reliably monitored and / or regulated or controlled using the inventive arrangement and the method according to the invention, with little effort and low cost. The stated object is with respect to the arrangement for power supply of pipeline monitoring devices with the features of claim 1, with respect to the method for energy ^¬ supply pipeline monitoring devices with the features of claim 14 and with respect to the pipeline for transporting gas or Oil with the features of claim 16 solved.

Advantageous embodiments of the arrangement for power supply of pipeline monitoring devices, the method for power supply of pipeline monitoring devices and the pipeline for the transport of gas or oil are apparent from the respectively associated dependent subclaims. The features of the main claims may be combined with each other and with features of the subclaims and features of the subclaims.

The inventive arrangement for power supply of pipeline monitoring devices comprises a pipe section of a pipeline, which is traversed by a fluid, at least one turbine, which has at least one impeller ^¬ , and at least one generator. At least one impeller is arranged ^¬ inside of the pipe section of the pipeline and configured such that energy from the impeller is a portable Wenig ^¬ least on the at least one generator exceeded.

Thereby, a reliable power supply of PIPELI ^¬ ne monitoring devices is added, which self-sufficient in remote regions and does not require a high level of maintenance. This reduces costs compared to known power supplies, which either requires a grid connection to the power grids in densely populated areas, or is complicated and maintenance-intensive with gas or diesel engines. The energy is provided as mechanical energy of the fluid flow (gas or oil), and converted by the turbine into mechanical rotational energy and delivered to the generator, which generates electrical energy. The electrical energy can be used to operate pipeline monitoring devices. An additional supply of energy through gas, oil or electrical networks is no longer necessary. The energy is taken directly from the flow of the fluid being transported in the pipeline.

The at least one generator may be located inside or outside the pipe section of the pipeline. Generators located outside the pipe or pipe section of the pipeline allow better access and thus easier maintenance. It is in the pipeline no space verlo ^¬ ren for housing the generator and the flow is not slowed down by a possible flow resistance of the genera ^¬ tors in the flow. Within the Rohrab ^¬-section integrated or accommodated generators, however, provide protection against damage such as vandalism or environmental influences. An additional protection by a dwelling is not necessary and a dwelling is saved.

It can be provided a shaft and / or a rod and / or a rope and / or a belt and / or a transmission, designed for transmitting mechanical rotational energy from the at least one impeller on the at least one Ge ^¬ generator. The selection is made according to the type, arrangement and cost and mechanical stability requirements.

The at least one impeller may be included in the generator, in particular as a rotor of the at least one generator. Since ^¬ at the at least one impeller permanent magnets and / or electrical coils of the at least one generator. It is thus unnecessary for a transmission of rotational energy from the turbine to the generator. Parts of the Genera ^¬ sector (eg coils) can be arranged outside the pipe section, and only the impeller is arranged inside. Shafts, rods, ropes, belts and gears can entfal ^¬ len. The simple design saves costs, resulting in less Ver ^¬ wear and maintenance. The at least one impeller may comprise a ring of blades mechanically mounted on a shaft. This leads to a stable construction of the impeller, which can be arranged mechanically stable in the pipe section via bearings and the shaft.

At least one impeller may also include a ring of sight ^¬ feln, wherein the blades are fixed to an outer ring, in particular foldable from a first position with its longitudinal direction substantially parallel to the tube section cross-section, to a second position substantially perpendicular to the pipe section cross-section. As a result, the blades of the impeller can be folded out of the central region of the pipe section and do not interfere with a cleaning of the pipeline with the help of eg a pig.

The pipe section may be formed as a hollow cylinder. At least one impeller may be in a first position with a rotation axis parallel to the longitudinal axis of hohlzylind step ^¬ pipe section to be arranged, wherein the impeller is foldable positionable in a second position. For this purpose, a container may be attached and the impeller can be folded in the fluid tight manner to the tube portion hohlzylindri ^¬ rule associated container if, for example a pig for cleaning the pipeline passes through the pipe section to a wall of the pipe section.

The one pipe section of the pipeline may also comprise two pipes connected in fluidic parallel connection, the at least one Impeller is disposed in a first of the two tubes and the second tube is adapted to pass a pig for cleaning the pipeline. The second tube may be designed as a kind of by-pass for the pig be ^¬ nachbart to a particular straight line through the first tube or the first tube may be disposed as a kind of by-pass with the adjacent at least one impeller to the particular straight through the second pipe, wherein the second tube has a device for blocking the fluid flow, in particular in an active operating state of the turbine. Thus, it is possible to pass a pig when cleaning a pipeline in the area of the impeller, without having to remove the impeller from the path of the pig, for example by flaps.

The arrangement may comprise a controller or a controller for adapting the power which can be taken from the at least one generator to demand values. Thus, it is possible to control or regulate how much energy is generated with the arrangement and thus also how much flow energy is taken from the fluid as the fluid flows through the pipeline. A pi ^¬ peline monitoring device, in particular an encapsulated pipeline monitoring device arranged in the interior of the pipe section may be electrically connected to the at least one generator. When the pipeline monitoring device is arranged inside the pipe section, destruction due to vandalism or environmental influences is prevented. The fluid may be natural gas or petroleum, or the fluid may include natural gas and / or petroleum. Other transportable by pipelines fluids are possible, for example, intended for disposal carbon dioxide. The pipe section may have a narrowing of the cross-section in one region and the at least one impeller may be arranged in the region of the constriction. As a result, the flow velocity of the fluid in the region of the At least one impeller can be increased and so the amount of energy to be taken from the fluid to be positively influenced. Ge ^¬ rade in terms of slowly flowing fluids as a fluid velocity can be generated, which is sufficient to drive an impeller. For pressure loss optimization, a device in the manner of a Venturi tube can be arranged in the area of the constriction.

The inventive method for powering pipeline monitoring devices, in particular using an arrangement described above, comprises that a pipe section of a pipeline is traversed by a fluid and the fluid flow at least one impeller of a turbine set in rotational movement and the rotational movement directly or is used indirectly for generating electrical energy with at least one generator.

The electrical current and / or the electrical voltage of the at least one generator can be used to operate at least one pipeline monitoring device.

A pipeline according to the invention for transporting gas or oil comprises a previously described arrangement repeated at predetermined intervals, in particular at intervals of 10 km and / or redundantly.

Those associated with the process of powering pipeline monitoring devices and with the pipeline for transporting gas or oil, i. Petroleum, associated benefits are analogous to the advantages previously described with respect to the power supply arrangement of pipeline monitoring devices.

Preferred embodiments of the invention with advantageous developments according to the features of the dependent claims are explained in more detail with reference to the figures, but without being limited thereto. It is shown in the figures: a schematic sectional view of the inventive arrangement of a turbine with impeller 3 and generator 4 in a pipe section 1 of a pipeline, and arranged in the arrangement shown in Fig. 1 with the generator 4 outside the pipe section 1, and in a simplified representation of the arrangement of Figs. 1 and 2, with a constriction 6 of the pipe section 1, and in Fig. 4, an arrangement shown in Fig. 2, with impeller 3 as part of the generator 4 and folding blades 12, and in

Fig. 5 is an arrangement shown in Fig. 2, with in a

Container 8 folding impeller 3, and in

Fig. 6 is an arrangement shown in Fig. 1 or 2, with a

By-pass tube 9 for a pig 10, and in Fig. 7, an arrangement shown in Fig. 1 or 2, with a

Bypass pipe 9 for the impeller 3 and a closure 11 of the pipe section. 1

In Fig. 1 is a schematic sectional view of the arrangement according to the invention is shown. A pipeline is made up of a series of pipes welded together, for example. The pipes can be made of plastic or steel. FIG. 1 shows a section along a longitudinal axis of a pipe or a pipe section 1. As a rule, tubes are hollow cylindrical.

If the pipeline flows through a fluid 2, as is the case for example by a gas or petroleum, then this flows Fluid 2 generally in the direction of the longitudinal axis of the Rohabschnit ^¬ tes 1. In Fig. 1, the flow direction of the fluid 2 is shown by an arrow. In the fluid flow 2, mechanical energy is stored in the form of the movement of the fluid 2. The fluid is typically pumped into pumping stations along the pipeline to be moved across the pipeline in the longitudinal direction via pressure differences in the pipeline and to compensate for fluid fluid friction losses with the pipeline pipe wall.

To variables such as pressure, flow rate or gas together ^¬ mensetzung of the fluid 2 to be able to measure at regular intervals in the pipeline, monitoring devices 7 are mounted along the pipeline pipeline. These usually contain a number of sensors in order to, for example, control the fluid flow ^¬ online. Sun can be found, among other things, whether a leak is in the pipeline or the fluid 2 flows too slowly and the pump Leis ^¬ processing must be increased. An arrangement according to the invention is designed to supply energy to a pipeline monitoring device 7 even in remote areas. Thus, power and / or voltage can be provided, for example, to power sensors and transmit their data to a control device by radio.

For this purpose, in a pipe section 1 of a pipeline, as shown in Fig. 1, a turbine with an impeller 3 is arranged. In Fig. 1, only a schematic representation of the arrangement according to the invention is shown. Thus, instead of an impeller 3, a series of superimposed wheels 3, for example mounted on a shaft 5, can be used as the turbine 3. The impeller 3 is arranged in the pipe section 1 such that the fluid 2 flows around the impeller 3 and is set in rotational motion. In general, the impeller 3 consists of blades 12, which are rotati ^¬ onssymmetrisch mounted in a plane on a shaft 5, wherein the shaft is perpendicular to the plane. The running ^¬ wheel 3 with the shaft 5 is appropriate in such a way in the fluid flow arranged that the longitudinal axis of the shaft 5 is parallel to the flow direction of the fluid Strö ^¬. 2

If the impeller of the turbine 3 is flowed around by the fluid 2 and thus set in rotational motion, the rotational movement is transmitted to a generator 4 via the shaft 5. The generator 4 converts the rotational energy into electrical energy. Thus, the fluid flow is deprived of mechanical energy and converted via the inventive arrangement into electrical energy. The generator 4 is electrically connected to the pipe ^¬ line monitoring device 7 and supplies them so with electrical energy.

The generator 4 can, as shown in FIG. 1, be arranged inside the pipe section 1 or the pipeline pipe, or alternatively, as shown in FIG. 2, be arranged outside the pipe section 1. Similarly, the pipe ^¬ line monitoring device 7 may be located inside or outside the pipe section 1. To the rotational movement or the rotational energy of the turbine with impeller 3 on the

To transmit generator 4, in particular as shown in Fig. 2 from the inside to the outside of the rough section 1, in addition to or instead of a shaft 5, devices such as. Linkage, ropes, belts and / or gear be provided.

If the fluid 2 flows only slowly through the pipe section 1 of the pipeline and thus the flow velocity of the fluid 2 would not be sufficient to set the impeller 3 in motion, then in the region of the pipe section 1 a constriction of the pipe cross-section 6, as shown in FIG. 3, can be arranged or used. The constriction 6 leads to an increase in the flow velocity of the fluid 2. If the impeller 3 is arranged in the region of the constriction 6, the increased flow velocity of the fluid 2 results in a better force transmission to the impeller 3 and the turbine can drive the generator 4. A pipeline is ge 10 cleans ^¬ usually with the aid of a pig. A problem with the arrangement of a turbine with impeller 3 in the interior of a pipe section 1 is that a pig 10 can not pass the region of the pipe section 1 with turbine 3. One way to make the area passable is the use of a folding impeller 3.

In Fig. 4 and 5, two alternative possibilities of folding wheels 3 are shown. Thus, in the example, which is shown in Fig. 4, the blades 12 of the running ^¬ wheel 3 attached to an outer ring hinged. The blades 12 can thus be folded from a first position perpendicular to the flow direction of the fluid 2 into a second position parallel to the flow direction of the fluid 2, and vice versa. On the blades 12 and / or on the outer ring electrical coils and / or permanent magnets can be ^{¬ introduced} , so that the impeller of the turbine 3 acts simultaneously as a rotor of the generator 4. The stator of the generator 4 is in this case at an outer or internal (for simplicity not shown in Fig. 4) of the circumferential Rohrab ^¬ section 1 is mounted or disposed.

By folding the blades 12, the blades 12 can be folded from the first position to the second position in a cleaning of the pipeline, and a pig 10, the area of the pipe section 1 with impeller 3 pass unhas ^¬ Pas. Alternatively, in the embodiment of Fig. 5, a Contai ^¬ ner 8 and a bulge on the pipe section 1 is mounted, in which an attached to a shaft 5 impeller 3 can be ^¬ works. As a result, in an operating state, the impeller 3 can be arranged in the fluid flow and drive a generator 4 via the shaft 5 and, for example, a transmission. If the pipe section 1 is to be cleaned by, for example, a pig 10 and the pig 10 must pass through the pipe section 1, then the impeller 3 can be folded into the container 8 become. If the container 8 has the size of the impeller 3 with Wel ^¬ le 5, so disappears in the engaged state, the impeller 3 and the shaft 5 completely in the container 8 and the pig 10 can pass the area of the pipeline.

The container 8 may be a welded to a cylindrical tube 1 fluid-tight box, which is fluid-tightly connected to the tube 1, with an open side to the tube 1 back, in the tube 1 at the point of the box, the wall is also open to the box out , As a result, no fluid of the pipeline can escape via the container 8. In or outside the container 8, the generator 4 is mechanically connected to the impeller 3 for transmitting the rotational energy. A pipeline monitoring device 7, electrically connected to the generator 4 can also be arranged in the container 8, in the pipe 1 or on the outside of the pipe 1. For the sake of simplicity, the pipeline monitoring device 7 is not shown in FIGS. 4 and 5. The arrangement of the pipeline monitoring device 7 in the container 8 or in the pipe 1 offers protection against weather influences or vandalism. An arrangement of the pipeline monitoring device 7 outside the container 8 or the pipe 1 facilitates maintenance. Analogously, the generator 4 can be arranged inside or outside of the container 8 or the tube 1.

In Figs. 6 and 7 show two further possibilities are Darge ^¬ provides, in use of the arrangement according to the invention in a pipe section 1 of a pipeline, the pipeline continues with eg a pig to Cleaning 10.

Thus, in Fig. 6, a pipe 9 is attached as a bypass to the pipe 1 of the pipe section. This can be done fluid ^¬ tight, for example by welding or gluing. Depending on the material of the pipe of the pipe section 1, for example plastic or steel, other fastening methods are conceivable. The

Turbine with impeller 3 is arranged in the straight through tube 1 on ^¬ . A pig 10 can bypass this area by passing it around the area via the bypass tube 9. One Generator 4 and a pipeline monitoring device 7 are shown in Figs. 6 and 7, not shown, for simplicity hal ^¬ calc. The embodiments and previously described Anordnungsmög ^¬ possibilities make for the embodiments of Figs. 6 and 7 also increases.

In contrast to the embodiment of FIG. 6, the turbine with impeller 3 in the bypass tube 9 is arranged in FIG. In order to operate the turbine 3 better, arranged in the main pipe 1 closure 11 can be closed. As a result, the fluid flow 2 is conducted from the main pipe 1 into the bypass pipe 9 and the turbine 3 is operated. A construction without closure 11 is also conceivable, however, the ge ^¬ rings flow velocity of the fluid 2 in the bypass pipe 9 can lead to problems in operating the turbine with impeller 3 and da ^¬ with in the generation of electricity with the generator 4. The advantage of the arrangement shown in Figure 7 is that the pig 10 can move in a straight line and does not have to be moved around any corners when cleaning the pipeline.

Combinations and additions of the embodiments shown in the figures are also possible. For example, a bypass tube 9 as shown in Figs. 6 and 7 may be provided to serve as a venturi device. This pressure loss through the inventive arrangement of Tur ^¬ bine with the impeller 3 and the generator 4 can be optimized, for example, in particular ^¬ sondere using a narrowing of the cross section 6 in the pipe section 1. As the fluid 2 for transport in the pipeline may have a number of substances , such as gas, oil, water, but also for example carbon dioxide can be used. The pipeline and ^thus also the pipe section 1 as well as any existing container 8 can be made of a number of materials, for example of plastic coated steel sheet or of pure plastic.

Claims

claims

1. Arrangement for supplying energy to pipeline monitoring devices (7), comprising a pipe section (1) of a pipeline through which a fluid (2) can flow, with at least one turbine having at least one impeller (3), and with at least one generator (4), characterized ge ^¬ indicates that the at least one impeller (3) in the interior of the pipe section (1) of the pipeline is arranged and is formed such that energy from the at least one

Impeller (3) on the at least one generator (4) transfer ^¬ bar is.

2. Arrangement according to claim 1, characterized in that the at least one generator (4) inside or outside of

Pipe section (1) of the pipeline is arranged.

3. Arrangement according to claim 1 or 2, characterized in that a shaft (5) and / or a linkage and / or a rope and / or a belt and / or a transmission is provided, adapted for transmitting mechanical rotational energy of the at least an impeller (3) on the at least one generator (4).

4. Arrangement according to claim 1 or 2, characterized in that the at least one impeller (3) from the generator (4) is summarized, in particular as a rotor of the at least one Ge ^¬ nerators (4).

5. Arrangement according to claim 4, characterized in that the at least one impeller (3) comprises permanent magnets and / or electrical coils of the at least one generator (4).

6. Arrangement according to one of the preceding claims, characterized in that the at least one impeller (3) comprises a ring of blades (12) on a shaft (5) mechanically fixed.

7. Arrangement according to one of claims 1 to 5, characterized in that the at least one impeller (3) comprises a ring of blades (12), wherein the blades (12) are fixed to an outer ring, in particular hinged from a first position their longitudinal direction substantially parallel to the pipe section cross-section in a second posi ^¬ on substantially perpendicular to the pipe section cross-section.

8. Arrangement according to one of the preceding claims, characterized in that the pipe section (1) is formed as a hollow cylinder and the at least one impeller (3) in a first position with a rotation axis parallel to the longitudinal ^¬ axis of the hollow cylindrical pipe section (1) is arranged wherein the impeller (3) is foldable in a second position can be arranged, in particular hinged in a fluid-tight with the hollow cylindrical pipe section (1) connected container (8) which angeord ^¬ net on a wall of the pipe section (1).

9. Arrangement according to one of the preceding claims, characterized in that the one pipe section (1) of the pipeline comprises two pipes fluidly connected in parallel, wherein the at least one impeller (3) is arranged in a first of the two tubes and the second tube is formed to let a pig (10) pass through to clean the pipeline.

10. Arrangement according to claim 9, characterized in that the second tube is formed as a kind of bypass (9) for the pig (10) adjacent to a particular rectilinearly continuous ers ^¬ th tube, or that the first tube as a kind of bypass ( 9) is arranged with the at least one impeller (3) Benach ^¬ beard to the particular rectilinearly continuous second tube, wherein the second tube has a device for blocking the fluid flow, in particular in an active operating state of the turbine.

11. Arrangement according to one of the preceding claims, characterized in that the arrangement comprises a controller or a controller for adapting the at least one generator (4) removable power to demand values

and / or that a pipeline monitoring device (7), in particular a pipeline encapsulated monitoring device (7) arranged in the interior of the pipe section (1), is electrically connected to the we ^¬ nigstens a generator (4).

12. Arrangement according to one of the preceding claims, characterized in that the fluid (2) consists of natural gas or petroleum or that the fluid (2) contains natural gas and / or petroleum.

13. Arrangement according to one of the preceding claims, characterized in that the pipe section (1) in a region has a constriction of the cross section (6), and that the at least one impeller (3) in the region of Ver ^¬ restriction (6) is, in particular for increasing the flow velocity of the fluid (2) in the region of the we ^¬ least one impeller (3), and / or the Druckverlustop ^¬ in the region of the constriction (6) a device in the manner of a Venturi tube is arranged.

14. A method for power supply of pipeline monitoring devices (7), in particular using an arrangement according to one of claims 1 to 13, wherein a Rohrab ^{¬ section} (1) of a pipeline is traversed by a fluid (2) and the fluid flow at least an impeller (3) of a turbine in rotation, and the offset Rotationsbewe ^¬ supply is used directly or indirectly for generating electrical energy with at least one generator (4).

15. The method according to claim 14, characterized in that the electrical current and / or the electrical voltage of the at least one generator (4) for operating at least one pipeline monitoring device (7) is used.

16. pipeline for transport of gas or oil, characterized labeled in ^¬ characterized in that the pipeline repeated at ^¬ claims 1 to 13 at predetermined intervals, comprising a redundant array according to one of the ^¬ particular at 10km intervals and / or.