DJFK6型角阀控制器说明书

DJFK6型角阀控制器

说明书

沈阳鑫榆林石油机械有限公司

DJFK6型角阀控制器说明书

DJFK6型角阀控制器是孔板式液动节流阀上的专用变送器，它将节流阀的开度转换成4—20mA电信号输送给数字显示仪以显示阀的开度。

一、主要技术数据

1、最大输出扭矩：150Kgf·m

2、输入液压压力：6~8MPa

3、测量范围：0°~180°

4、精度等级：1.5级

5、液路联接：快速接头M22×1.5

二、结构与工作原理

DJFK6型角阀控制器主要由液压驱动和电信号传感两部分组成。液压驱动部分由液压缸，齿条和齿轮轴等组成，电信号传感部分由转换机构和位移变送器组成。工作原理为液压缸推动齿条带动齿轮轴旋转，转动角度为0°~180°，由齿轮轴同步带动孔板式节流阀阀芯转动达到其开、关的目的，同时转换机构推动位移变送器直线移动，使其输出信号随之改变，从而在开度表上显示出孔板式节流阀的开度大小。

三、安装与使用

DJFK6型角阀控制器与电动节流管汇控制箱配套使用，控制孔板式液动节流阀开或关，在控制箱面板上操纵手动换向阀通过角阀控制器来控制孔板式节流阀，同时数显表可显示孔板式节流阀的开度大小。安装调试如结构示意图所示，用过渡接头将角阀控制器和孔板式节流阀阀杆联接起来，用4—M18螺栓通过联接板将角阀控制器固定在孔板式节流阀上。再将油路管线和航空插头按

标牌标定位置对应联接。

转换机构主要由位移变送器、触头、航空插件、调整螺钉等组成。由于孔板式节流阀阀杆凸出长短不一致，每次安装角阀控制器时需精确对零调整，先将孔板式节流阀关闭，将角阀控制器安装在孔板式节流阀上，松动调整螺钉，移动位移变送器，使阀位数字显示仪读数为“0”，零位调整好后，紧定调整螺钉。

四、说明

1、齿轮箱体内应每半年更换一次齿轮润滑机油。

2、联接板由需方自备。

3、过渡接头六角方尺寸依需方而定。

结 构 示 意 图

位移变送器

航空插头

调整螺钉

转换机构

触头

调整螺钉

DJFK6 Type Angle Valve Controller

Instruction Manual

Shenyang Xinyulin Petroleum Machinery Co., Ltd. Instruction Manual for DJFK6 Type Angle Valve Controller

The DJFK6 Type Angle Valve Controller, specially designed for the orifice plate hydrodynamic throttle valve, is used to convert valve opening into 4—20mA electrical signals and transmit them to the digital indicator so that the valve opening is displayed.

1. Main technical details

1) Maximum output torque: 150Kgf·m

2) Input hydraulic pressure: 6~8MPa

3) Range of measurement: 0°~180°

4) Accuracy class: 1.5

5) Connection of hydraulic circuits: quick-acting coupling M22×1.5

2. Structure and operating principles

The DJFK6 Type Angle Valve Controller is mainly composed of the hydraulic drive unit and the electrical signal sensing unit. The former consists of the hydraulic cylinder, rack and gear shaft, etc., and the later includes a converter and a displacement transmitter. Its operating principles are as follows: the hydraulic cylinder acts on the rack, which then drives the gear shaft to rotate with a rotation angle ranging from 0° to180°. The core of the orifice plate hydrodynamic throttle valve is synchronously driven by the gear shaft, thus realizing the open/close of the valve. At the same time, the converter drives the displacement transmitter to move along a straight line, making its output signals changed along with it, thus the opening of the orifice plate

hydrodynamic throttle valve is displayed on the opening position indicator.

3. Installation and Application

The DJFK6 Type Angle Valve Controller is designed to use together with an electric throttle manifold to control the orifice plate hydrodynamic throttle valve by operating the hand-directional valve on the control panel. At the same time, the digital indicator will display the opening of the orifice plate hydrodynamic throttle valve. Its installation and commissioning shall refer to the following schematic structural diagram. The process is as follows: connect the angle valve controller with the orifice plate throttle valve rod by using a transition joint, then fix the angle valve to the orifice plate throttle valve by means of a connecting plate fastened with a 4—M18 bolt, lastly, connect the oil way with the aviation plug at the place marked with a label plate.

The converter is mainly composed of the displacement transmitter, contracts, aviation plug and adjusting screw, etc. Due to the uncertainty of the protruded length of the valve rod of the orifice plate throttle valve, an accurate zero adjustment is necessary each time the angle valve is installed. The process is as follows: with the orifice plate throttle valve closed, fix the angle valve controller to the orifice plate throttle valve, then slacken the adjusting bolt to move the displacement transmitter until the reading on the valve position digital indicator is zero. Tighten the adjusting bolt after the zero position is well adjusted.

4. Notes