• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510319A1
    申请号:T0144610
    申请日:2010-08-30
    公开日:2012-03-15
    发明作者:Peter Nowicki；Christof Abele；Klaus Kuhn
    申请人:Andritz Hydro Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a distributor for turbomachines, in particular for Francis or Kaplan turbines or pumps or pump turbines with a plurality of guide vanes, which are actuated via a respective link on a common adjusting member and each having a security element.
    There are adjusting devices in nozzles known, in which each of the transmission mechanisms has a security element that limits the transmitted torque during a closing operation on the vane. These safety elements are intended to prevent accidental jamming of a solid body between two adjacent vanes concentrating the full torque which can be applied by the actuation device on the common adjusting element to the vanes which are prevented from closing, which could cause damage to the vanes or the adjusting element. As such security elements, i.a. Scherbolzen or train break bolt used, which break before exceeding the maximum torque and thereby release the blade from the Association. Such an adjustment device is e.g. in the CH 444
    The aim of the invention is to avoid the disadvantages of the known security elements and to ensure a secure connection between the vane and adjusting.
    The invention is therefore characterized in that the security element is provided in the handlebar. On the one hand, this embodiment can prevent the vane or the adjustment mechanism or else the regulating mechanism from being damaged and, on the other hand, the fact that adjacent guide vanes are also affected.
    An advantageous development of the invention is characterized in that the handlebar has a bending body, wherein the handlebar may include a screw connection.
    A favorable embodiment of the invention is characterized in that the screw is surrounded by a sleeve.
    A favorable development of the invention is characterized in that a prestressed tension bolt is provided as the screw connection, which has a predefined fracture cross section. A401202AT 1
    An advantageous embodiment of the invention is characterized in that only every second link has a security element, while the intermediate links are provided without security element. This can be achieved without compromising safety, a considerable structural and cost simplification and a cascade effect at breakage can be prevented.
    The invention will now be described by way of example with reference to the drawings, in which:
    Fig. 1 shows the nozzle of a Francis turbine with bending fracture core according to the invention and
    Fig. 2 illustrates a bending handlebar according to the invention in detail.
    Fig. 1 shows a section of a nozzle 1 of a Francis turbine. It can be seen here the axes 2 of the vanes, which are attached via a guide vane lever 3 and an articulated handlebar 4 connected to the regulating or adjusting ring 5. By rotating the adjusting ring 5 thus all vanes are adjusted uniformly over the axes 2. In one end position, the guide vanes serve as a shut-off device. Since foreign objects can enter the turbine and the diffuser with the water flow, there is a risk that the closing of the guide vanes will be hindered by a foreign body trapped in the diffuser. If there are no safety elements, the affected vane will be damaged during the closing process. The safety element ensures that the turbine's other vanes can securely close, even if a pair of vanes is obstructed by a foreign object. The blocked guide blade with security element is thus excluded from exceeding a defined force from the total movement of the distributor 1 and protected from damage. In the present example, only the transmission mechanism of every second guide blade is provided with the bending handle bar 6 according to the invention. The transmission mechanism of the intermediate blades is as hitherto by a (relentless) handlebar 4. In this variant, in the usual design of the rotary Leit-A401202 AT 2 blades in the event of trapping a foreign body between two adjacent blades on each of these blades from a foreign body Torque exerted, which counteracts the closing movement. To avoid overstressing, it is therefore generally sufficient if only one of the two blades is able to yield. Thus, this arrangement does not affect the safety of the turbine and the nozzle.
    In Fig. 2, an inventive bending handlebar 6 is shown. The bending handlebar 6 consists of a bending body (bending profile) 7, which is connected on the one hand with the guide vane lever 3 of the vane and on the other hand with the adjusting ring 5. For stiffening is a screw. This gland consists of a prestressed tension bolt 8, which is screwed between two legs 9 by means of nuts 10. In the area between the two legs 9 of the tension bolt 8 is surrounded by a sleeve 11. The combination of bending body 7 and screw connection is able to transmit the required actuating forces. The release force of the bending sheet link 6 is defined by the breaking cross section 12 of the prestressed tension bolt 8. The fracture cross-section 12 is here approximately in the middle of the draw bolt, but detects, for example. be arranged at the transition from sleeve 11 to the leg 9. After a break in the handlebar the vane is held by the bending body 7. A completely free movement of the vane in the flow is thus prevented. The release force on the handlebars and the holding force after the break of the tension bolt 8 are independent of each other on the dimensions of the Bmchquerschnittes 12 and the cross section of the bending body 7 selectable. The tripping force is independent of the relationship between buckling force and installation length. The bending handlebar 6 can thereby also be used for Francis turbines, where a buckling element is not feasible for lack of buckling length. The bending rupture element 6 has a low dispersion of the release force in comparison to shear pins and articulated arms. This is ensured by the triggering via a preloaded screw connection and the low influence of friction due to large eccentricities on the bending body 7 and tension bolt 8. By a low dispersion of the release force on the security element, the tripping A401202 AT 3 force can be chosen to be lower in the case of fixed collateral. The remaining diffuser components can thereby be made smaller. The bending handlebar 6 according to the invention is well suited for turbines and pump turbines with high dynamic load. By the prestressed train-5 bolt 8, the load on the fracture section 12 is reduced and fatigue problems are reduced. The bending handlebar 6 is a simple and inexpensive component. After a trigger case, it can be easily replaced. This can also be done with mounted turbine or pump turbine, since the adjustment is mounted outside the turbine cover. The invention is not limited to the examples. It can e.g. each handlebar be designed as a bending handlebar. 4
    A401202 AT
    权利要求:
    Claims (1)
    [1]
    5 10 15 claims: 1. distributor for turbomachinery, in particular for Francis or Kaplan turbines or pumps or pump turbines with a plurality of guide vanes, which are actuated via a respective link (4, 6) on a common adjusting member (5) and each one security element ( 6), characterized in that the security element (8, 12) in the handlebar (6) is provided. 2. Diffuser according to claim 1, characterized in that the link (6) has a bending body (7). 3. diffuser according to claim 2, characterized in that the link (6) includes a screw (8, 10). 4. diffuser according to claim 2 t Def 3, characterized in that the screw l (8) with a sleeve (11) is surrounded. 5. diffuser according to claim 3 or 4, characterized in that a prestressed Zugbolz§h (8) is provided as a screw having a predefined breaking cross-section (12). 6. diffuser according to one of claims 1 to 5, characterized in that only every second link (6) has a security element (8, 12), while the intermediate link (4) are provided without security element. A401202 AT 5
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    同族专利:
    公开号 | 公开日
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    EP2612021B1|2014-07-16|
    CA2807445C|2018-04-24|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH163093A|1932-02-04|1933-07-31|Escher Wyss Maschf Ag|Guide vane adjustment device on centrifugal machines, in particular on water turbines.|
    GB989828A|1962-05-18|1965-04-22|Karlstad Mekaniska Ab|Improvements in and relating to safety links for guide-vane apparatus of hydraulic turbines|
    DE1503299A1|1966-05-26|1969-09-04|Voith Gmbh J M|Adjustment device for blades of flow machines with transmission organs designed as a safety element|
    JPH0874725A|1994-09-07|1996-03-19|Toshiba Corp|Guide vane protection device for hydraulic machine|
    US1543050A|1924-02-21|1925-06-23|Newport News S & D Co|Breakage link|
    US1585862A|1924-12-30|1926-05-25|Morgan Smith S Co|Breakable link for turbine gates|
    US2084369A|1936-08-03|1937-06-22|Morgan Smith S Co|Hydraulic machine|
    CH228733A|1942-01-26|1943-09-15|Voith J M Fa|Bow-shaped broken link for control devices of water turbines and pumps.|
    CH444787A|1966-03-28|1967-09-30|Escher Wyss Ag|Adjusting device for the diffuser of a water turbine, provided with flexible links to protect against overstressing|
    CH512010A|1970-07-16|1971-08-31|Charmilles Sa Ateliers|Transmission rod, in particular for the control mechanism of the distributor of a hydraulic machine|
    JPS539670B2|1975-02-14|1978-04-07|
    FR2794801B1|1999-06-10|2001-07-06|Snecma|PROTECTIVE DEVICE FOR THE CONTROL MECHANISM OF THE SHUTTERS OF A TURBOEACTOR INPUT STEERING WHEEL|
    CN201025220Y|2007-03-30|2008-02-20|天津市天发重型水电设备制造有限公司|Secure and protective flexibly connection pole device for water guiding machine|
    CN201461199U|2009-06-29|2010-05-12|天津市天发重型水电设备制造有限公司|Protector for water turbine distributor|
    CN101666282A|2009-09-04|2010-03-10|四川东风电机厂有限公司|Double-spring safe connecting rod technology|
    AT510319B1|2010-08-30|2013-11-15|Andritz Hydro Gmbh|LEAD PACKAGE FOR FLOW MACHINES|AT510319B1|2010-08-30|2013-11-15|Andritz Hydro Gmbh|LEAD PACKAGE FOR FLOW MACHINES|
    DE102015004648A1|2015-04-15|2016-10-20|Man Diesel & Turbo Se|Guide vane adjusting device and turbomachine|
    DE102017101386A1|2017-01-25|2018-07-26|Ihi Charging Systems International Gmbh|Adjustable guide device for an exhaust gas guide section of an exhaust gas turbocharger and exhaust gas guide section for an exhaust gas turbocharger|
    DE102018126930A1|2018-10-29|2020-04-30|Rolls-Royce Deutschland Ltd & Co Kg|Adjusting device and a method for adjusting the guide vanes of a compressor of a gas turbine engine|
    GB2586269A|2019-08-16|2021-02-17|Rolls Royce Plc|A variable guide vane system|
    法律状态:
    2020-04-15| MM01| Lapse because of not paying annual fees|Effective date: 20190830 |
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    CA2807445A| CA2807445C|2010-08-30|2011-08-19|Guide vane assembly for continuous-flow machines|
    BR112013004745A| BR112013004745A2|2010-08-30|2011-08-19|"conducting apparatus for turbochargers"|
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    US13/819,861| US9394806B2|2010-08-30|2011-08-19|Guide apparatus for turbomachines|
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    MA35618A| MA34405B1|2010-08-30|2013-01-29|DISTRIBUTOR FOR TURBOMACHINES|
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