CN110959070B - 具有用于操纵进流阀的电驱动器的水力发电设施 - Google Patents
具有用于操纵进流阀的电驱动器的水力发电设施 Download PDFInfo
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- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
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Abstract
水力发电设施,包括上水池、下水池、将上水池与下水池连接的水路、布置在水路中的水力机械、布置在压力管路中的进流阀和用于操纵进流阀的电驱动器,其中,电驱动器构造成使其在电力故障情况下也确保可靠关闭进流阀,而无需设置紧急供电。
Description
技术领域
本发明涉及一种具有用于操纵进流阀的电驱动器的水力发电设施以及操纵这种进流阀的方法。
背景技术
大多数水力发电设施基于安全原因具有进流阀,利用其帮助可以在损坏情况下让设施安全停止运行。按照常见方式,这种进流阀利用液力伺服马达和液力机组的帮助操纵。为此需要大量的液压油,这对环境而言是有风险的。为了降低风险,建议水力发电设施的进流阀的电操纵的驱动器。JPH02259283(A)公开了一种用于操纵水力发电设施的进流阀的电驱动器,其包括电马达、传动装置、螺杆螺纹传动机构、杠杆和配重。杠杆与进流阀的转动轴连接并承载配重,从而进流阀可以利用重力的帮助关闭。电马达通过传动装置与螺杆螺纹传动机构连接。螺杆螺纹传动机构作用于杠杆,从而杠杆和配重可以利用电马达的帮助被抬起并因此进流阀被打开。因为螺杆螺纹传动机构不具有自锁机构,所以在关闭时配重通过螺杆螺纹传动机构和传动装置驱动马达,马达在此充当发电机。通过可接通的可变负载电阻可以控制进流阀的关闭时间,以避免在关闭进流阀时的压力冲击。此外,该布置方案还包括将进流阀止动在打开位置的装置,该装置包括相当复杂的作用于杠杆的机构。止动可以借助电磁体解锁。为此需要电流流过电磁体。在电力故障时可能就出现问题,即,其必须为此设置有例如电池,而电池又必须被监控,以此能在任何情况下可靠执行关闭。
发明内容
发明人提出的任务是,说明一种用于操纵水力发电设施的进流阀的备选的电驱动器,其构造更简单并且在电力故障情况下也可靠确保进流阀的关闭,而无需为此配备电池等。
发明人已认识到,提出的任务能够通过一种水力发电设施解决,该水力发电设施包括上水池;下水池;水路,所述水路将所述上水池与所述下水池连接;水力机械,所述水力机械布置在所述水路中并且将所述水路划分为两个子段,其中,压力管路布置在所述上水池和所述水力机械之间;和进流阀,所述进流阀布置在所述压力管路中,其中,所述进流阀包括以能转动的方式受支承的阀体、作用于所述阀体的杠杆、布置在所述杠杆上的配重、用于止动所述阀体的能电操控的止动单元以及电驱动器,其中,所述驱动器构造成使所述驱动器能够通过抬起和降下所述配重来打开和关闭所述进流阀,并且所述驱动器包括驱动系,所述驱动系依次包括电马达、传动装置和螺杆螺纹传动机构,所述电马达、传动装置和螺杆螺纹传动机构布置成使得通过运行所述马达能够改变所述驱动器的长度,以便抬起和降下所述配重,其特征在于,所述止动单元整合到所述驱动器中并且构造成在存在电控制信号时,所述止动单元能够卡阻所述驱动系,而在不存在电控制信号时,所述止动单元能够释放所述驱动系,并且所述驱动器还包括具有能调节的制动力的机械的制动器,所述制动器构造成能够锁止式嵌接到所述驱动系中。有利实施方案将在下文中进一步描述。
根据本发明所述的水力发电设施,其中,所述制动器布置在所述传动装置的马达侧。
根据本发明所述的水力发电设施,其中,所述止动单元布置在所述传动装置的马达侧。
根据本发明所述的水力发电设施,其中,所述制动器以能电驱控的方式实施,从而所述制动器在第一状态下能够以预先调节的制动力锁止式嵌接到所述驱动系中,并且在第二状态下能够完全释放所述驱动系,其中,在存在电控制信号时,能够占据所述第二状态,并且在不存在电控制信号时,能够占据所述第一状态。
根据本发明所述的水力发电设施,其中,所述制动器实施成使所述制动器仅在所述驱动系的使所述进流阀关闭的转动方向上锁止式嵌接到所述驱动系中,并且在另一转动方向上使所述驱动系能够不被所述制动器阻碍地转动。
根据本发明所述的水力发电设施,其中,所述制动器实施成整合到所述马达中。
根据本发明所述的水力发电设施,其中,所述止动单元实施成整合到所述传动装置中。
根据本发明所述的水力发电设施,其中,所述螺杆螺纹传动机构实施为滚珠丝杠传动机构。
根据本发明所述的水力发电设施,其中,所述螺杆螺纹传动机构实施为行星式滚柱丝杠传动机构。
附图说明
以下结合附图阐述根据本发明的解决方案。其中如下详细地:
图1示出水力发电设施;
图2示出进流阀;
图3示出根据本发明的用于操纵进流阀的驱动器。
具体实施方案
图1示出水力发电设施的示意结构。水力发电设施包括用1标识的上水池和用2标识的下水池,其中,上水池1的水位在下水池2的水位上方。池1和2也可以是天然水体,例如湖泊或河流。水力发电设施还包括用3标识的水路,其将上水池1与下水池2连接。在水路3中布置有用4标识的水力机械。由此,水路3被划分为两个子段。置于水力机械4之上的部分(压力管路)用31标识,置于水力机械4之下的部分(吸管)用32标识。水力机械4可以是透平、泵或泵透平。用5标识的进流阀位于压力管路31中。
图2示出进流阀5。进流阀5包括阀体,阀体用51标识并且以能围绕用52标识的轴线转动的方式受支承。通过阀体51围绕轴线52转动可以打开和关闭进流阀5。为此,进流阀5包括至少一个杠杆,其作用于阀体51并且用53标识。将用54标识的配重施加在杠杆53上。杠杆53和配重54安置成,使得进流阀5可以仅仅通过配重54的重力就可靠关闭。当然应理解为等效的是,杠杆53已经实施得沉重到无需其他配重54就关闭进流阀5。此外,进流阀5还包括用55标识的用于操纵进流阀5的驱动器。驱动器55按如下方式设计并且与进流阀5连接,使得通过驱动器55可以抬起配重54,以便打开进流阀5。在图2中,驱动器55为此作用于杠杆53。然而其能够以同样良好的方式作用于配重54。驱动器55设计成,使得驱动器的长度可以通过缩回和伸出而变化,用以操纵进流阀5。在第一状态(缩回状态)下,驱动器55具有相对较短的长度,从而配重54可以下降直至进流阀5关闭。在第二状态(伸出状态)下,驱动器55具有相对较长的长度,从而配重抬高直至进流阀5打开。
图3以非常示意的方式示出根据本发明的驱动器55。驱动器55包括用551标识的电马达、具有能调节的制动力的用552标识的机械的制动器、用553标识的止动单元、用554标识的传动装置和用555标识的无自锁机构的螺杆螺纹传动机构。马达551与传动装置554和螺杆螺纹传动机构555连接,使得通过马达551的转动,螺杆螺纹传动机构555可以使在两个悬挂点(通过图3上下两个圆圈表示)之间的驱动器的长度改变。在此所述部件安置成使得通过驱动器可以施加抬起配重54所需的力。在此,传动装置554按如下方式起作用,使得马达551提供的转动运动(扭矩相对较低情况下转速相对较高)转换至具有较低转速和较高扭矩的转动运动并将其传递至螺杆螺纹传动机构555。因为螺杆螺纹传动机构555没有自锁机构,所以将马达切换成无电流或无电压就足以关闭进流阀。在此,具有能调节的制动力的机械的制动器552用于调节进流阀关闭时间,制动力越高,关闭时间越长。制动器552布置成使得其可以锁止驱动系在驱动器55之内的转动运动。为了满足此目的,制动器552可以位于不同部位,例如在马达551和传动装置552之间,如图3所示,或者在传动装置554和螺杆螺纹传动机构555之间。制动器也可以整合到马达551中,或位于传动装置554之内。然而有利的是,制动器552锁止式作用于驱动系的位于传动装置554的马达侧的部位处,这是因为在那里较小的制动力就足以抵抗在那里的较小的扭矩地起作用。驱动器55还包括能电操控的止动单元,其用553标识并且安置成,使得止动单元在第一状态下可以完全禁止驱动系的转动运动,而在第二状态下完全释放转动运动,其中,在止动单元553接收到电信号时,占据第一状态,而在不存在电信号时,则占据第二状态。关于止动单元553的姿态,类似地适用关于制动器552所述内容。有大量可行实施方案适用于止动单元553。例如是能操控的制动器,其制动力在关闭的第一状态下大小为使得配重54的重力不足以克服制动器的静摩擦。例如可以是棘轮结构,其嵌接到相应齿轮(例如传动装置)中,以便完全阻止驱动系的转动运动。或者可以是具有能缩回和能伸出的销钉的设备,该销钉嵌接到相应开口中,例如驱动系的驱动轴中的相应开口中(如图3所示),或传动装置554的齿轮中的相应开口中。在此,所述的操控止动单元553的工作原理例如可以分别通过电磁体、永磁体和/或机械弹簧的相互作用实现。止动单元553的目的是,在进流阀5的打开状态下可以卡阻驱动器55,从而马达551可以关断。因为进流阀5大多时候位于此状态,所以可以节约能源,因为止动单元553在卡阻的第一状态下仅消耗很少的电能。另一方面通过所述切换逻辑确保的是,在电力故障情况下,止动单元553占据第二状态并由此释放驱动系,从而进流阀可以以通过制动器调节的关闭时间来关闭。不同于由JPH02259283(A)已知的驱动器,本发明的驱动器允许将阀体51止动在几乎任意的阀体转动位置处。这样进流阀例如也可以卡阻在关闭状态,这例如在维护作业时提高了安全性。
打开进流阀5时,通过马达551的转速调控打开的时间。在此,通常马达551以恒定转速运转。假如制动器552持久锁止式嵌接到驱动系中,则马达在此抵抗制动力工作。可选地,可以在打开时降低能量消耗,具体而言可以以电控制的方式停用制动器552,也就是,在第一状态下,制动器552以预先调节的制动力锁止式嵌接到驱动系中,而在第二状态下,制动器552完全释放驱动系。在此,制动器552设计成,使得在存在电控制信号时占据第二状态,而在不存在电控制信号时则占据第一状态。由此确保,在电力故障情况下也能够以所调节的关闭时间可靠实现进流阀5的关闭。备选地,制动器552也可以实施成,使得其仅在驱动系的一个转动方向上锁止式嵌接到驱动系中。也就是,仅当驱动系朝关闭方向转动(其中,配重54下降)时,制动器552才锁止式嵌接到驱动系中,而在打开方向(其中,配重54抬起)上,驱动系可以不受阻地转动。
进流阀5的关闭可以以两种方式完成。一种是在制动器552激活时通过将马达551切换成无电流,或者是通过借助马达551的帮助缩回螺杆螺纹传动机构。在两种情况下,当然止动单元553必须释放驱动系。在第二种情况下,关闭时间通过马达551的转速调控,并且制动器552可以在必要时是停用的,以便节约能量。
根据所述内容清楚可知,每当马达551工作,即,处于电流下时,就可以停用制动器552。因而特别适当的是,必要时能控制的制动器552整合到马达551中,这是因为制动器552的控制可以通过给马达551供电来实现。这样需要的构件较少并且进一步简化了驱动器的结构。
针对螺杆螺纹传动机构555可以应用滚珠丝杠传动机构或者行星式滚柱丝杠传动机构,因为它们没有自锁机构。
还要注意,图3中各个部件的布置方案仅理解为示例性的。例如驱动系可以通过应用适当的锥齿轮等换向并且因此驱动器55的长度可以缩短地实施。然而在驱动系中始终说明如下顺序:马达551、传动装置554、螺杆螺纹传动机构555。
Claims (9)
1.水力发电设施,包括上水池(1);下水池(2);水路(3),所述水路将所述上水池(1)与所述下水池(2)连接;水力机械(4),所述水力机械布置在所述水路(3)中并且将所述水路(3)划分为两个子段(31、32),其中,压力管路(31)布置在所述上水池(1)和所述水力机械之间;和进流阀(5),所述进流阀布置在所述压力管路(31)中,其中,所述进流阀(5)包括以能转动的方式受支承的阀体(51)、作用于所述阀体(51)的杠杆(53)、布置在所述杠杆(53)上的配重(54)、用于止动所述阀体的能电操控的止动单元(553)以及电驱动器(55),其中,所述驱动器(55)构造成使所述驱动器能够通过抬起和降下所述配重(54)来打开和关闭所述进流阀(5),并且所述驱动器(55)包括驱动系,所述驱动系依次包括电马达(551)、传动装置(554)和螺杆螺纹传动机构(555),所述电马达、传动装置和螺杆螺纹传动机构布置成使得通过运行所述马达(551)能够改变所述驱动器(55)的长度,以便抬起和降下所述配重(54),其特征在于,所述止动单元(553)整合到所述驱动器(55)中并且构造成在存在电控制信号时,所述止动单元能够卡阻所述驱动系,而在不存在电控制信号时,所述止动单元能够释放所述驱动系,并且所述驱动器(55)还包括具有能调节的制动力的机械的制动器(552),所述制动器构造成能够锁止式嵌接到所述驱动系中。
2.根据权利要求1所述的水力发电设施,其中,所述制动器(552)布置在所述传动装置(554)的马达侧。
3.根据权利要求1所述的水力发电设施,其中,所述止动单元(553)布置在所述传动装置(554)的马达侧。
4.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述制动器(552)以能电驱控的方式实施,从而所述制动器(552)在第一状态下能够以预先调节的制动力锁止式嵌接到所述驱动系中,并且在第二状态下能够完全释放所述驱动系,其中,在存在电控制信号时,能够占据所述第二状态,并且在不存在电控制信号时,能够占据所述第一状态。
5.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述制动器(552)实施成使所述制动器仅在所述驱动系的使所述进流阀(5)关闭的转动方向上锁止式嵌接到所述驱动系中,并且在另一转动方向上使所述驱动系能够不被所述制动器(552)阻碍地转动。
6.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述制动器(552)实施成整合到所述马达(551)中。
7.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述止动单元(553)实施成整合到所述传动装置(554)中。
8.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述螺杆螺纹传动机构(555)实施为滚珠丝杠传动机构。
9.根据权利要求1至3中任意一项所述的水力发电设施,其中,所述螺杆螺纹传动机构(555)实施为行星式滚柱丝杠传动机构。
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DE102017116968.7 | 2017-07-27 | ||
PCT/EP2018/068753 WO2019020372A1 (de) | 2017-07-27 | 2018-07-11 | Wasserkraftanlage mit einem elektrischen antrieb zur betätigung des einlaufventils |
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