EP4445059A1 - Kompensator zum kompensieren thermischer ausdehnung - Google Patents
Kompensator zum kompensieren thermischer ausdehnungInfo
- Publication number
- EP4445059A1 EP4445059A1 EP22818868.6A EP22818868A EP4445059A1 EP 4445059 A1 EP4445059 A1 EP 4445059A1 EP 22818868 A EP22818868 A EP 22818868A EP 4445059 A1 EP4445059 A1 EP 4445059A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compensator
- counteracting
- line
- compensator according
- length
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/12—Adjustable joints; Joints allowing movement allowing substantial longitudinal adjustment or movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/10—Adjustable joints; Joints allowing movement comprising a flexible connection only
- F16L27/107—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve
- F16L27/11—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
- F16L27/111—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations the bellows being reinforced
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations
- F16L51/027—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations with external reinforcement
Definitions
- the invention relates to a compensator for compensating for thermal expansion with a variable length for compensating for, in particular large, temperature changes in the pipeline.
- Such compensators are used to compensate for thermal changes in the length of pipelines, in particular with large temperature differences, such as in a gas turbine. Without such a compensator, there would be a risk that the pipe system would warp or even tear.
- Such compensators are often designed as bellows, for example.
- the disadvantage is that when pressure is applied to the bellows, large forces occur in the pipeline system, which puts a considerable strain on the pipeline system to be compensated.
- the problem on which the invention is based is, in the case of a compensator, the damaging large ones occurring as a result of pressurization inside the compensator To prevent or at least greatly reduce forces on the pipeline system to be compensated.
- the problem is solved in a compensator of the type mentioned at the outset by means for counteracting a length change force of the compensator caused by the internal line pressure.
- a development of the invention is characterized in that the means are designed to generate a counterforce to counteract the change in length of the compensator caused by the internal line pressure by means of the internal line pressure. In this way, the forces can easily be canceled out, since the forces that occur from the internal pressure of the compensator are also dependent on the internal line pressure.
- the internal line pressure serves as a drive for the counteracting means. Since this internal line pressure is responsible for the forces that occur on the compensator, it can also be used to counteract these forces. This results in a particularly simple control and a particularly simple structure. In particular, the internal line pressure generated by a process gas conducted inside the line can be used. Further control and regulation mechanisms or complex constructions are not necessary.
- One embodiment is characterized in that the interior of the line is fluidly connected to the means for counteracting.
- the energy of the pressurized fluid in the interior of the line can easily be used to generate a counterforce.
- a fluid line can be used here.
- a branch of the line for the fluid line is adjacent to the compensator. In this way, the pressure conditions in the compensator and for the counteracting means are as equal as possible.
- the counteracting means have a drive.
- a drive for example, a Hydraulic cylinders, a pneumatic cylinder and/or a bellows are used.
- Such drives are simple, robust and reliable.
- a compensator similar to the compensator can be used. If this is then particularly preferably fluidly connected to the fluid line, a similar force ratio between the drive and the compensator results in a simple manner, so that the forces that occur will simply cancel each other out.
- Yet another embodiment is characterized by an operative connection between the compensator and the counteracting means.
- the counteracting means can also be arranged at a distance from the compensator. This results in flexible arrangement and application options.
- a development of the invention is characterized in that the operative connection has a transmission element for the opposing force. As a result, the counterforce can be conducted to the compensator simply and effectively.
- the transmission element has at least one Bowden cable. Forces can be transported simply and reliably by means of a Bowden cable of this type. If several Bowden cables are provided, a good force distribution over the outer circumference of the compensator can be achieved. This leads to a particularly low material stress. A particularly effective structure results from four Bowden cables. If, in addition, the Bowden cable is adjustable in length, a suitable pretension can be established on the compensator and the whole thing can be designed without play if necessary.
- a further development is characterized by counter bearings on longitudinal ends of the compensator that face away from one another. Between these counter bearings, for example, the Bowden cables can each be arranged in a known manner in a force-transmitting manner. This results in a simple structure and easy adjustability.
- a preferred embodiment is characterized in that the counteracting means have a linear guide for the compensator.
- the path of movement of the compensator which is restricted in this way, can easily be specified with a simple transmission of force. In this case, for example, only a single Bowden cable is required.
- a simple design for the compensator results from a design as a bellows.
- FIG. 1 shows a pipeline with a compensator with the feature of the invention.
- Fig. 1 shows a pipeline 10 with a compensator 11 with the features of the invention.
- the pipeline 10 has pipes 12.
- the figure shows two pipes 10 which are connected to flanges 14 of the compensator 11 by means of flanges 13.
- the flanges 13, 14 are connected to one another by means of a plurality of bolts 15 and nuts 16. Between the flanges 13, 14 suitable seals are arranged in a known manner, which cannot be seen in the figure.
- a bellows 17 for length compensation is arranged between the flanges 14 as a length compensation member.
- counter bearings 18, 19 are also arranged by means of the bolts 15 and nuts.
- the counter bearings 18 , 19 are assigned Bowden cables 20 , which in turn are assigned counter bearings 21 , 22 at their ends facing away from the counter bearings 18 , 19 .
- the counter bearings 21 , 22 in turn belong to a pneumatic cylinder 23 which is provided as a means for counteracting a change in length of the compensator 11 caused by the internal line pressure in the line pipes 12 .
- each core 24 run in a known manner, whose distal ends facing away from one another each have terminals 25.
- the cores are arranged in receptacles of the counter bearings 18, 21, which are not shown in the figure.
- the Bowden cable 20 also has screw adjustments 26 on ends facing away from one another, which are each mounted in receptacles in the counter bearings 19, 22, which are not shown in the figure.
- the respective Bowden cable 20 can be adjusted without play by means of the screw adjustments 26 or possibly brought to a certain pretension.
- the pneumatic cylinder 23 also has a piston 27 which has a thread 28 at least on its distal end associated with the counter bearing 22 .
- the thread 28 is designed as an external thread 28 , with nuts 29 being arranged on the external thread 28 and serving to fix the counter bearing 22 on the piston 27 .
- the thread 28 could also be designed as an internal thread into which a screw is screwed, which should then either have a sufficiently large screw head for fixing the counter bearing 22 .
- a washer can also be provided possible.
- the nut 29 arranged facing the counter bearing 21 a bearing section could then be provided on the piston 27 in this embodiment.
- the piston 27 could either have a corresponding thickening.
- the opening in the counter bearing 22 can also only have a size that allows the screw to reach through, but not the piston 27.
- conduit 30 which is fluidly connected at one end to a conduit 12 by means of a branch. At its end facing away from the branch 31 , the line 30 is also fluidly connected to the pneumatic cylinder 23 by means of a screw connection 32 .
- the pipeline 10 carries fluid.
- the pipeline 10 can be a process gas duct of a gas turbine.
- the relatively high temperature differences that occur between the operating conditions and the switched-off state lead to a temperature-dependent change in length of the pipelines 12.
- the compensator 11 is provided, since otherwise stresses and even cracks in the pipeline 10 can occur.
- the compensator 11 has the length-adjustable bellows 17, it can compensate for changes in the length of the conduits 12, so that the conduits 12 with the compensator 10 are protected against mechanical stresses.
- the pneumatic cylinder 23 has the same pneumatic cross section as the bellows 17. As a drive, the pneumatic cylinder 23 is connected to the line interior of the line pipe 12 by means of the line 30, the branch 31 and the screw connection 32. In this way, the pneumatic cylinder 23 generates a counter-force which is dependent on the line internal pressure in the line tube 12 and which is a function of the longitudinal change force of the bellows 17 .
- a regulation is not required, since the process gas is taken from the pipe 12 close to the compensator 11 and the internal pressure in the line thus essentially corresponds to the internal pressure in the bellows 17 .
- a balance between the force generated in the pneumatic cylinder 23 and the force generated in the bellows 17 thus automatically levels off.
- the forces generated by the pneumatic cylinder 23 are transmitted from the counter bearings 21, 22 via the cores 24 of the Bowden cables 20 to the counter bearings 18, 19. In this way, the bellows 17 and thus the compensator 11 are essentially force-free, regardless of the actual internal pressure in the line.
- a component corresponding to the compensator 11 can also be used.
- the pneumatic cylinder 23 is essentially thermally separated from the pipeline 10 . Regardless of the position of the compensator 11 in the pipeline 10, the pneumatic cylinder 23 can thus be arranged at a suitable point where the required space is available.
- the pneumatic cylinder 23 does not have to be specially insulated since it is thermally separated to a large extent. In this way, there are many advantages for a simple construction of the pneumatic cylinder 23, for example with regard to any weld seams, an associated foundation or any wall doubling that may be required.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202021106666.0U DE202021106666U1 (de) | 2021-12-07 | 2021-12-07 | Kompensator zum Kompensieren thermischer Ausdehnung |
| PCT/EP2022/084849 WO2023104913A1 (de) | 2021-12-07 | 2022-12-07 | Kompensator zum kompensieren thermischer ausdehnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4445059A1 true EP4445059A1 (de) | 2024-10-16 |
Family
ID=80474152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22818868.6A Pending EP4445059A1 (de) | 2021-12-07 | 2022-12-07 | Kompensator zum kompensieren thermischer ausdehnung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4445059A1 (de) |
| DE (1) | DE202021106666U1 (de) |
| WO (1) | WO2023104913A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901608C (de) * | 1949-05-19 | 1954-01-14 | Allg Rohrleitung A G | Entlasteter Linsenkompensator fuer Fluessigkeits- und Gasleitungen |
| AU586339B2 (en) * | 1986-06-20 | 1989-07-06 | Evans Deakin Industries Limited | Flexible connection |
| CN205504321U (zh) * | 2016-04-18 | 2016-08-24 | 北京航天凌云波纹管有限公司 | 一种拉绳连接无阻力平衡型波纹补偿器 |
-
2021
- 2021-12-07 DE DE202021106666.0U patent/DE202021106666U1/de active Active
-
2022
- 2022-12-07 WO PCT/EP2022/084849 patent/WO2023104913A1/de not_active Ceased
- 2022-12-07 EP EP22818868.6A patent/EP4445059A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023104913A1 (de) | 2023-06-15 |
| DE202021106666U1 (de) | 2022-02-15 |
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