CN101323151B - 一种自动混配水泥浆系统及控制方法 - Google Patents

一种自动混配水泥浆系统及控制方法 Download PDF

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CN101323151B
CN101323151B CN 200710014934 CN200710014934A CN101323151B CN 101323151 B CN101323151 B CN 101323151B CN 200710014934 CN200710014934 CN 200710014934 CN 200710014934 A CN200710014934 A CN 200710014934A CN 101323151 B CN101323151 B CN 101323151B
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CN101323151A (zh
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商劲杰
张树立
于清峰
孙伟杰
姜晓宝
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Abstract

本发明公开了一种自动混配水泥浆系统及控制方法,其特点是它包括微处理器(1),微处理器(1)通过线路分别与人机界面(2)、下灰阀油缸电磁阀(5)和密度计(4)连接,下灰阀油缸电磁阀(5)与下灰阀(3)连接,在下灰阀(3)上设下灰阀角位移传感器(6);按下列步骤控制水泥浆密度:数据采集、设定密度、设定密度与实际密度归一化、定时中断,将当前下灰阀阀位作为PID积分前项,针对实际密度和设定密度的归一化结果进行PID计算、将PID输出值与下灰阀阀位的差作为阀位偏差、阀位偏差与死区比较,输出开关量控制下灰阀油缸电磁阀动作,从而精确的控制水泥浆密度;操作简单、能进行动态密度的自动控制。

Description

一种自动混配水泥浆系统及控制方法
技术领域:
本发明涉及混配水泥浆技术领域,具体地讲是一种自动混配水泥浆系统及控制方法。
背景技术:
目前,固进水泥混浆作业通常是手动作业,操作复杂、劳动强度大、难以准确控制密度,因而水泥浆密度波动大,直接影响混浆质量。
发明内容:
本发明的目的是克服上述已有技术的不足,而提供一种自动混配水泥浆系统。
本发明的另一目的是提供一种自动混配水泥浆控制方法。
本发明主要解决了现有的水泥混浆操作复杂、劳动强度大、难以准确控制密度及影响混浆质量等问题。
为了达到上述目的,本发明是这样实现的:一种自动混配水泥浆系统,其特殊之处在于它包括微处理器1,微处理器1通过线路分别与人机界面2、下灰阀油缸电磁阀5和密度计4连接,下灰阀油缸电磁阀5与下灰阀3连接,在下灰阀3上设下灰阀角位移传感器6,下灰阀3用于控制并计量干水泥流量,密度计4用于准确测量水泥浆的实际密度。
本发明的一种自动混配水泥浆的控制方法,其特殊之处在于按下列步骤控制水泥浆密度:
1.1数据采集,采集水泥浆密度信号及下灰阀阀位信号;
1.2设定密度,设定作业要达到的设定密度;
1.3设定密度与实际密度归一化,将实际密度和设定密度除以密度计量程,得到0~1.0范围内的值,便于PID进行计算;
1.4定时中断,将当前下灰阀阀位作为PID积分前项,针对实际密度和设定密度的归一化结果进行PID计算;
1.5将PID输出值与下灰阀阀位的差作为阀位偏差;
1.6阀位偏差与死区比较,输出开关量控制下灰阀油缸电磁阀动作,从而精确的控制水泥浆密度。
本发明的一种自动混配水泥浆的控制方法,所述的下灰阀阀位是下灰阀开度信号经过转换后,得到的0-100%的下灰阀阀位值。
本发明所述的一种自动混配水泥浆系统及控制方法与已有技术相比具有突出的实质性特点和显著进步,在实际密度与设定密度比较超出设定的范围时,能自动并及时准确地调整下灰阀,以保证混浆质量。附图说明:
图1是本发明的连接示意图;
图2是本发明的自动控制的流程图。
具体实施方式:
为了更好地理解与实施,下面结合附图给出具体实施例详细说明本发明一种自动混配水泥浆系统及控制方法。
实施例1,参见图1、2,将预置程序的微处理器1通过线路分别与人机界面2、下灰阀油缸电磁阀5和密度计4连接,下灰阀油缸电磁阀5与下灰阀3连接,在下灰阀3上安装下灰阀角位移传感器6,下灰阀3用于控制并计量干水泥流量,密度计4用于准确测量水泥浆的实际密度,微处理器1通过MPI总线与人机界面2可实现人机通讯;
上述自动混配水泥浆系统的控制方法,按下列步骤控制水泥浆密度:
1.1数据采集,采集水泥浆密度信号及下灰阀阀位信号;
1.2设定密度,设定作业要达到的设定密度;
1.3设定密度与实际密度归一化,将实际密度和设定密度除以密度计量程,得到0~1.0范围内的值,便于PID进行计算;
1.4定时中断,将当前下灰阀阀位作为PID积分前项,针对实际密度和设定密度的归一化结果进行PID计算;
1.5将PID输出值与下灰阀阀位的差作为阀位偏差;
1.6阀位偏差与死区比较,输出开关量控制下灰阀油缸电磁阀动作,从而精确的控制水泥浆密度。
所述的下灰阀阀位是下灰阀开度信号经过转换后,得到的0-100%的下灰阀阀位值。

Claims (2)

1.一种自动混配水泥浆系统,其特征在于它包括微处理器(1),微处理器(1)通过线路分别与人机界面(2)、下灰阀油缸电磁阀(5)和密度计(4)连接,下灰阀油缸电磁阀(5)与下灰阀(3)连接,在下灰阀(3)上设下灰阀角位移传感器(6);所述的密度计(4)采集水泥浆密度信号,所述的下灰阀角位移传感器(6)采集下灰阀阀位信号,该系统仅需采集上述两个信号。
2.权利要求1所述的一种自动混配水泥浆系统的控制方法,其特征在于按下列步骤控制水泥浆密度:
1.1数据采集,采集水泥浆密度信号及下灰阀阀位信号;
1.2设定密度,设定作业要达到的设定密度;
1.3设定密度与实际密度归一化,将实际密度和设定密度除以密度计量程,得到0~1.0范围内的值,便于PID进行计算;
1.4定时中断,将当前下灰阀阀位作为PID积分前项,针对实际密度和设定密度的归一化结果进行PID计算;
1.5将PID输出值与下灰阀阀位的差作为阀位偏差;
1.6阀位偏差与死区比较,输出开关量控制下灰阀油缸电磁阀动作,从而精确的控制水泥浆密度。
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