The utility model discloses a control system of a top rotor and a brake oil cylinder, including an oil tank, an electric motor, an oil suction pump, a single acting brake oil cylinder and a controller; it also includes a two position three-way solenoid valve, a pressure insurance type overflow valve, a single direction valve, a two position three-way manual valve and an adjustable flow valve; the oil outlet of the oil suction pump is successively connected with a two position three-way solenoid valve, a one-way valve and a single acting system through an oil pipe The cavity of the moving oil cylinder is connected; the pressure relief valve is connected to the oil pipe between the two position three-way solenoid valve and the one-way valve; the two position three-way manual valve and the adjustable flow valve are connected in series and connected to the oil pipe between the one-way valve and the single acting brake oil cylinder, and the bypass oil pipe is connected to the oil tank. The utility model can prevent the failure of the water turbine generator set caused by the continuous rise of the rotor component when it reaches the set position under the working condition of the top rotor, and can prevent the impact of the rotor component on the thrust bearing in the water turbine generator set due to the excessive falling speed when the rotor component falls.
【技术实现步骤摘要】
一种顶转子及制动油缸的控制系统
本技术涉及水轮发电机组的零部件控制系统,具体涉及一种顶转子及制动油缸的控制系统。
技术介绍
通常,水轮发电机组中设置有顶转子及制动油缸,当水轮发电机组开机前,制动油缸将转子顶起一定高度,使水轮发电机组中的推力瓦和镜板之间建立油膜,防止两者之间干摩擦,导致烧瓦。当水轮发电机组停机过程中,制动油缸顶部的制动块与固定在转子底部的制动环相接触,产生摩擦制动来完成停机。如CN201416504Y公开了一种水轮发电机组制动及顶转子装置,包括油箱、油泵、电动机、漏油环管回油回路和复位回油回路,电动机控制油泵从油箱中取油,所述的油泵与二位三通阀连通,二位三通阀分别与两个溢流阀连通,所述的两个溢流阀分别通过单向阀与制动环管连通。上述水轮发电机组制动及顶转子装置,因所用溢流阀为常用的普通溢流阀,当制动油缸将转子顶起至设定高度后,供油油管中的油压超过溢流阀的开启压力值,溢流阀开启,将供油油管中的多余流量液压油溢流回油箱,虽然供油油管中的油压不再上升,但吸油泵仍然向制动油缸的腔内提供压力油,制动油缸的顶转子动作不一定马上停止,且因水轮发电机组中的转子部件和定子部件之间的间隙一般保持在20mm左右,如不能及时停止顶转子动作,则会造成转子部件与定子部件之间接触,使水轮发电机组出现故障。另外现有水轮发电机组的制动机顶转子装置中,对转子的下落工况不够重视,仅在制动油缸的回油油管上设置截止阀,当打开截止阀时,制动油缸的活塞杆受到转子的自重作用力而快速下落,转子下落速度过快,容易对水轮发电机组中的推力轴承造成冲击 ...
【技术保护点】
1.一种顶转子及制动油缸的控制系统,包括油箱(1)、电机(2)、吸油泵(3)、单作用制动油缸(11)及控制器(14);其特征在于:还包括二位三通电磁阀(6)、压力保险型溢流阀(7)、单向阀(8)、二位三通手动阀(9)及可调节流阀(10);所述电机和二位三通电磁阀分别通过电缆与控制器电连接,所述吸油泵的转轴通过联轴器与电机的转轴连接,吸油泵的吸油口通过油管与油箱连通,其出油口通过油管依次与二位三通电磁阀、单向阀及单作用制动油缸的腔内连通;所述压力保险型溢流阀旁接在二位三通电磁阀与单向阀之间的油管上;所述二位三通手动阀和可调节流阀依次串联并旁接在单向阀与单作用制动油缸之间的油管上,且该旁通油管与油箱连通。/n
【技术特征摘要】
1.一种顶转子及制动油缸的控制系统,包括油箱(1)、电机(2)、吸油泵(3)、单作用制动油缸(11)及控制器(14);其特征在于:还包括二位三通电磁阀(6)、压力保险型溢流阀(7)、单向阀(8)、二位三通手动阀(9)及可调节流阀(10);所述电机和二位三通电磁阀分别通过电缆与控制器电连接,所述吸油泵的转轴通过联轴器与电机的转轴连接,吸油泵的吸油口通过油管与油箱连通,其出油口通过油管依次与二位三通电磁阀、单向阀及单作用制动油缸的腔内连通;所述压力保险型溢流阀旁接在二位三通电磁阀与单向阀之间的油管上;所述二位三通手动阀和可调节流阀依次串联并旁接在单向阀与单作用制动油缸之...
【专利技术属性】
技术研发人员:谢孟军,相飞行,千鑫,王家友,欧泽波,刘吉康,毛智鹏,
申请(专利权)人:天生桥二级水力发电有限公司天生桥水力发电总厂,
类型:新型
国别省市:贵州;52
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