CN203770264U - 一种驱动水泥泵的液压回路 - Google Patents
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Abstract
本实用新型涉及一种石油设备技术领域,确切地说是一种驱动水泥泵的液压回路。所述液压回路包含液压泵、换向阀、液压马达、油箱,所述换向阀的进油口与回油口分别同液压泵与油箱相连,所述液压马达通过联轴器与水泥泵连接,所述水泥泵运转通过控制换向阀来调节液压回路工作在低速驱动回路或者高速驱动回路。本实用新型结构简单、操作方便、该液压回路既能安装在水泥泵设备内,又能使水泥泵在低转速大扭矩、小排量高压力工况和高转速小扭矩、大排量低压力工况下工作。
Description
技术领域
本实用新型涉及石油设备技术领域,确切地说是一种驱动水泥泵的液压回路。
背景技术
传统的水泥泵驱动拥有大功率、大扭矩的特点,现有三种方案:
方案一,用发动机驱动变速箱,变速箱再通过传动轴来驱动水泥泵;
方案二,用一个液压马达直接与水泥泵传动轴连接,驱动水泥泵;
方案三,用一个马达加减速箱来驱动水泥泵。
由于水泥泵设备内没有变速箱,方案一中通过传动轴来驱动水泥泵不可行;方案二中选用满足水泥泵扭矩和功率要求的一个大排量的液压马达,此液压马达径向尺寸超出设备空间,无法安装,同时选用的匹配该液压马达的大排量的液压泵径向尺寸超出设备空间,无法安装;方案三中选用的减速箱,其径向尺寸和轴向尺寸超出设备安装空间,无法安装,同时增加减速箱增加了设备成本。
上述设备是石油特殊装置,装置内部尺寸大小固定,上述三种技术方案无法安装,且无法满足液压马达与液压泵在不同状态下的作业工况,即低转速大扭矩、小排量高压力工况和高转速小扭矩、大排量低压力工况。
实用新型内容
本实用新型所要解决的技术问题是提供一种驱动水泥泵的液压回路。该液压回路既能安装在水泥泵设备内,又能使水泥泵在低转速大扭矩、小排量高压力工况和高转速小扭矩、大排量低压力工况下工作。
本实用新型解决上述技术问题的技术方案如下:一种驱动水泥泵的液压回路,包含液压泵、换向阀、液压马达、油箱,所述换向阀的进油口与回油口分别同液压泵与油箱相连,所述液压马达通过联轴器与水泥泵连接,通过控制换向阀来调节所述水泥泵的液压回路工作在低速驱动回路或者高速驱动回路,所述液压马达包含第一进油口A1与第二进油口A2、第一回油口B1与第二回油口B2,所述液压泵包括高压油路A和低压油路B。
进一步,所述低速驱动回路具体实现如下:所述液压马达的第一进油口A1、第二进油口A2之间并联连接,所述液压泵的高压油路A直接连接第一进油口A1与第二进油口A2,所述第一回油口B1与第二回油口B2分别连接到低压油路B,所述低压油路B连接着油箱。所述液压马达中的两个马达同时旋转,所述低速驱动回路的是用于低转速大扭矩、小排量高压力状况。
进一步,所述高速驱动回路具体实现如下:所述液压泵的高压油路A连接液压马达的第一进油口A1,所述第一回油口B1连接液压马达的第二进油口A2,所述第二回油口B2连接着低压油路B,所述低压油路B连接着油箱。所述高速驱动回路是用于高转速小扭矩、大排量低压力状况。
本实用新型的有益效果是:本实用新型结构简单、操作方便、该液压回路既能安装在水泥泵设备内,又能使水泥泵在低转速大扭矩、小排量高压力工况和高转速小扭矩、大排量低压力工况下工作。
附图说明
图1为本实用新型低速液压回路原理图;
图2为本实用新型高速液压回路原理图。
附图中,各标号所代表的部件列表如下:
1、液压泵,2、换向阀,3、液压马达,A、高压油路,A1、第一进油口,A2、第二进油口,B1、第一回油口,B2、第二回油口,B、低压油路、 D、联轴器、F、油箱。
具体实施方式
以下结合附图对本实用新型的原理和特征进行描述,所举实例只用于解释本实用新型,并非用于限定本实用新型的范围。
如图1至图2所示,是一种驱动水泥泵的液压回路,包含液压泵1、换向阀2、液压马达3、油箱F,所述换向阀2的进油口与回油口分别同液压泵1与油箱F相连,所述液压马达3通过联轴器D与水泥泵连接,通过控制换向阀2来调节所述水泥泵的液压回路工作在低速驱动回路或者高速驱动回路,所述液压马达3内部由2个马达组成,分别包含第一进油口A1与第二进油口A2、第一回油口B1与第二回油口B2,所述液压泵1包括高压油路A和低压油路B。
所述液压泵1安装在动力单元分动箱上,由发动机向液压泵1提供动力,操作人员通过操作换向阀2来控制水泥泵的液压回路,它的控制过程如下:
换向阀2调至接口,使液压马达3实现双油路工作状态,处于低速驱动回路,所述低速驱动回路具体实现如下:所述液压马达3的第一进油口A1、第二进油口A2之间并联连接,所述液压泵1的高压油路A直接连接第一进油口A1与第二进油口A2,所述第一回油口B1与第二回油口B2分别连接到低压油路B,所述低压油路B连接着油箱F。所述液压马达3中的两个马达同时旋转,由于两个马达内部存在油压过大的情况,导致所述马达运转的速率低,所述低速驱动回路的是用于低转速大扭矩、小排量高压力状况。
换向阀2断开接口,使液压马达3实现单油路工作状态,所述液压马达3处于高速驱动回路,所述高速驱动回路具体实现如下:所述液压泵1的高压油路A连接液压马达3的第一进油口A1,所述第一回油口B1连接液压马达3的第二进油口A2,所述第二回油口B2连接着低压油路B,所述低压油 路B连接着油箱F。所述液压马达的油路流入方向A1-B1-A2-B2,使油在马达内充分燃烧,达到高转速效果。所述高速驱动回路是用于高转速小扭矩、大排量低压力状况。
以上所述仅为本实用新型的较佳实施例,并不用以限制本实用新型,凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。
Claims (3)
1.一种驱动水泥泵的液压回路,其特征在于,包含液压泵、换向阀、液压马达、油箱,所述换向阀的进油口与回油口分别同液压泵与油箱相连,所述液压马达通过联轴器与水泥泵连接,通过控制换向阀来调节所述水泥泵的液压回路工作在低速驱动回路或者高速驱动回路,所述液压马达包含第一进油口A1与第二进油口A2、第一回油口B1与第二回油口B2,所述液压泵包括高压油路A和低压油路B。
2.根据权利要求1所述的一种驱动水泥泵的液压回路,其特征在于,所述低速驱动回路具体实现如下:
所述液压马达的第一进油口A1、第二进油口A2之间并联连接,所述液压泵的高压油路A直接连接第一进油口A1与第二进油口A2,所述第一回油口B1与第二回油口B2分别连接到低压油路B,所述低压油路B连接着油箱。
3.根据权利要求1所述的一种驱动水泥泵的液压回路,其特征在于,所述高速驱动回路具体实现如下:
所述液压泵的高压油路A连接液压马达的第一进油口A1,所述第一回油口B1连接液压马达的第二进油口A2,所述第二回油口B2连接着低压油路B,所述低压油路B连接着油箱。
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