CN203560189U - 一种基于液压控制固井泵的排量自动控制系统 - Google Patents
一种基于液压控制固井泵的排量自动控制系统 Download PDFInfo
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Abstract
本实用新型涉及自动控制领域，确切地说是一种基于液压控制固井泵的排量自动控制系统。所述系统包括控制器、接近开关、液压泵、液压马达、固井泵，所述控制器包含万能变送器和PLC控制器，所述接近开关是将采集的齿轮转速信号发送回PLC控制器，所述液压泵根据PLC控制器接收的齿轮转速信号调节输出油量大小，液压马达根据所述液压泵输出油量大小驱动内部叶片旋转提供动力，固井泵根据所述液压马达提供的动力稳定输出泥浆排量。该系统通过自动控制液压泵的转速，实现液压控制固井泵的自动排量控制，提升了固井的质量，解决了不能根据设定自动调节液压泵转速，从而调节固井泵排量稳定的问题。
Description
技术领域
本实用新型涉及自动控制系统领域，确切地说是一种基于液压控制固井泵的排量自动控制系统。
背景技术
随着工程技术的不断发展，在某些只有液压动力的场合下，出现了液压泵控制固井泵的需求。
然而，传统的液压控制固井泵系统，在排量控制的方式采用手动控制，并且固井泵的动力来源于动力单元的发动机提供，由于发动机上还附带其他的负载需求，如果发动机的转速经常改变，将会影响到固井泵的大排量的输出量，直接造成泥浆不能充分填充井壁，从而极大地影响到固井的质量。
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基于液压控制固井泵的排量自动控制系统，通过自动控制液压泵的转速，实现液压控制固井泵的自动排量控制，解决了不能根据设定自动调节液压泵转速，从而调节固井泵排量稳定的问题。
本实用新型解决上述技术问题的技术方案如下：一种基于液压控制固井泵的排量自动控制系统，所述系统包括控制器、接近开关、液压泵、液压马达、固井泵，所述控制器包含万能变送器和PLC控制器，所述接近开关是将采集的齿轮转速信号发送回PLC控制器，所述液压泵根据PLC控制器接收的齿轮转速信号调节输出油量大小，液压马达根据所述液压泵输出油量大小驱动内部叶片旋转提供动力，固井泵根据所述液压马达提供的动力稳定输出泥浆排量。
在上述技术方案的基础上，本发明还可以做如下改进。
进一步，所述系统还包含手动控制，在手动控制中所述万能变送器连接着电位器。
进一步，所述手动控制通过安装在面板上的一个电位器旋转按钮提供手动信号，万能变送器将接收到手动信号转化成4～20mA电信号发送给液压泵。
进一步，所述PLC控制器根据接收的齿轮转速的信号生成固井泵排量数据，并与设定的排量数据比较判断：
如果生成的固井泵排量数据大于设定的排量数据，则自动调节液压泵油量使液压马达转速减速到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据小于设定的排量数据，则自动调节液压泵油量使液压马达转速加速增大到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据等于设定的排量数据，则自动保持固井泵的排量。
进一步，所述接近开关连接在固井泵输入端的一个转动的齿轮盘上，通过采集齿轮转速的方式检测固井泵的排量。
进一步，所述PLC控制器包含PID控制器的功能，所述万能变送器也包含电阻电流变送器。
本实用新型的有益效果是：该系统通过自动控制液压泵的转速，实现液压控制固井泵的自动排量控制，提升了固井的质量，解决了不能根据设定自动调节液压泵转速，从而调节固井泵排量稳定的问题。
附图说明
图1为本实用新型原理结构示意图；
图2为本实用新型实例原理结构示意图。
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、图2所示，一种基于液压控制固井泵的排量自动控制系统，所述系统包括控制器、接近开关、液压泵、液压马达、固井泵，所述控制器包含万能变送器和PLC控制器，所述接近开关是将采集的齿轮转速信号发送回PLC控制器，所述液压泵根据PLC控制器接收的齿轮转速信号调节输出油量大小，液压马达根据所述液压泵输出油量大小驱动内部叶片旋转提供动力，固井泵根据所述液压马达提供的动力稳定输出泥浆排量。其中液压泵的动力来源与发动机输出端的分动箱输出的动力，通过接收到的检测的模拟信号转化成电信号来控制液压泵的转速。
所述系统还包含手动控制，在手动控制中所述万能变送器连接着电位器。
所述PLC控制器包含PID控制器功能，所述万能变送器也包含电阻电流变送器。
所述手动控制通过安装在面板上的一个电位器旋转按钮提供手动信号，待万能变送器接收到手动信号转化成4～20mA电信号发送给液压泵，所述手动控制不经过PLC控制器，而是通过变送器直接输出，避免因控制器故障引起大泵失控，避免因故障导致无法作业的情况发生。
所述接近开关连接在固井泵输入端的一个转动的齿轮盘上，通过采集齿轮转速的方式检测固井泵的排量。
所述PLC控制器根据接收的齿轮转速的信号生成固井泵排量数据，并与设定的排量数据比较判断：
如果生成的固井泵排量数据大于设定的排量数据，则自动调节液压泵油量使液压马达转速减速到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据小于设定的排量数据，则自动调节液压泵油量使液压马达转速加速增大到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据等于设定的排量数据，则自动保持固井泵的排量。
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 (6)
1.一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述系统包括控制器、接近开关、液压泵、液压马达、固井泵，所述控制器包含万能变送器和PLC控制器，所述接近开关是将采集的齿轮转速信号发送回PLC控制器，所述液压泵根据PLC控制器接收的齿轮转速信号调节输出油量大小，液压马达根据所述液压泵输出油量大小驱动内部叶片旋转提供动力，固井泵根据所述液压马达提供的动力稳定输出泥浆排量。
2.根据权利要求1所述的一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述系统还包含手动控制，在手动控制中所述万能变送器连接着电位器。
3.根据权利要求1或2所述的一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述手动控制通过安装在面板上的一个电位器旋转按钮提供手动信号，万能变送器将接收到手动信号转化成4～20mA电信号发送给液压泵。
4.根据权利要求2所述的一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述PLC控制器根据接收的齿轮转速的信号生成固井泵排量数据，并与设定的排量数据比较判断：
如果生成的固井泵排量数据大于设定的排量数据，则自动调节液压泵油量使液压马达转速减速到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据小于设定的排量数据，则自动调节液压泵油量使液压马达转速加速增大到固井泵的排量趋于设定的排量数据；
如果生成的固井泵排量数据等于设定的排量数据，则自动保持固井泵的排量。
5.根据权利要求1所述的一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述接近开关连接在固井泵输入端的一个转动的齿轮盘上，通过采集齿轮转速的方式检测固井泵的排量。
6.根据权利要求1所述的一种基于液压控制固井泵的排量自动控制系统，其特征在于，所述PLC控制器包含PID控制器的功能，所述万能变送器也包含电阻电流变送器。
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