HDV绞车技术协议HDV重型张紧绞车ACE带式输送机系统工程有限公司2011年9月26日lower end of the condenser of the distillation unit, which happens to come across 300mL the bottom of the conical flask, the bottle contains boric acid solution 25--the 50mL and 2~3 drop indicator. Sodium hydroxide solution through the funnel to join 100~150mL, Lysis solution alkalized. Note the funnel neck cannot be empty. ensure a liquid seal.Open the condenser tubes of condensed water, began distilling. In this process, ensure the amount of steam produced is constant. Collected by 20~30min about200mL to the liquid in the Erlenmeyer flask, to stop distillation. Lowering of the Erlenmeyer flask, condenser tube left the surface, allow excess condensed water to drip into the bottle, and then rinsing with water condenser tube ends, water drip into the bottle.Ensure that release ammonia into the Erlenmeyer flask quantitatively, liquid in the bottle is green. 10 or 25mL pipette calibration sulfuric acid titration of liquid in the bottle and, until the color becomes purplish red, read number of ml of the standard solution of sulphuric acid consumption. Determination of the number: measured on the same sample twice. Blank: reagent blank determination, such as sample containers containing nitrogen, then the container should be blank. 6, the results of the calculation method: ammonia nitrogen content instarches are sample weight to the original weight of the sample expressed as a percentage of weight in the formula: x--sample nitrogen,%;T--standards for titration of moles of sulfuric acid concentration, mol/l; Vo--blank with sulfuric acid solution volume,MODES OF OPERATIONThere are three modes of operation for the winch:绞车有三种不同的操作模式Manual Mode:手动模式In manual mode the tension is adjusted via the Manual Increase andManual Decrease push buttons. Pressing the Manual Start push-button starts the winch and energises the winch motor. The HDW controls the sequence of events and monitors the system for any fault or abnormality.The loop tension can then be increased by pressing the Manual Increase push-button or decreased by pressing the Manual Decrease push-button.The Manual Increase push-button is inhibited at tensions above 100kN toprevent increasing the tension to an unsafe value. The winch is stopped in manual mode by pressing the Stop push-button.在手动模式下，通过“手动增加”和“手动减小”按扭来调整皮带的张力。
通过按“手动启动”按扭来启动绞车，给绞车电机通电。
HDW的PLC来控制所有动作的顺序并监测系统的任何故障和异常。
此时就可以同过“手动增加”按扭或“手动减小”按扭来调节皮带的张力了。
当张力大于100KN时，“手动增加”按扭将失效。
通过按人工停止按扭绞车将停机。
Automatic Mode:自动模式In automatic mode the tension is adjusted in response to the tension, as measured by the load cell. The HDW reads the set point value from theStart and Run values in the program (typically 50 and 40kN respectively).The winch is started when the Winch Run” contact is closed fro m the belt starter. This is normally after the conveyor pre-start alarm has sounded for 5 seconds. The winch motor is energised then the winch controller adjusts the tension to the start tension value. When the winch tension is within 5kN of the start tension value for 2 seconds theTension OK” contact closes to signal the switchgear to start the conveyor drive motors. 120 seconds after the conveyor starts, the winch tension is decreased from its start value to its run value.在自动模式下HDW的PLC通过张力传感器的反馈来调节皮带的张力。
HDV的PLC在程序中读取启动和运转时的张力设定值（通常分别为100KN和70KN）。
当皮带机启动器发出信号后绞车电动机通电。
这通常在胶带机启动信号发出5秒之后。
2秒钟后离合器和控制器电磁阀开始激活。
绞车控制器调整张力到启动值。
当张力在启动值的偏差5KN的范围内持续2秒钟，张力符合的信号反馈给皮带机启动器，然后皮带机启动器启动主驱动电机。
250 秒后，张力从启动值降到运行值。
Reeling Mode:卷带模式In reeling mode the tension is adjusted to the low setpoint reeling tension (nominally 5kN) by the HDW. This provides a constant low tension suitable for reeling belt during a maingate belt retraction. The winch motor must be started by pressing the Manual Start pushbutton, after which the tension is automatically adjusted to 5kN. The winch is stopped by pressing the Stop pushbutton.通过转换控制面板上的转换开关来选择卷带模式。
在卷带模式下，HDV的PLC 将皮带的张力调节到卷带张力（通常为5KN）。
这给卷带的时候提供了一个持续的合适的低张紧力。
这种模式下绞车电机是通过手动启动按扭来启动的，当通过HDW的PLC控制张力到5KN时，绞车也需要通过手动按扭来停机。
lower end of the condenser of the distillation unit, which happens to come across 300mL the bottom of the conical flask, the bottle contains boric acid solution 25--the 50mL and 2~3 drop indicator. Sodium hydroxide solution through the funnel to join 100~150mL, Lysis solution alkalized. Note the funnel neck cannot be empty. ensure a liquid seal.Open the condenser tubes of condensed water, began distilling. In this process, ensure the amount of steam produced is constant. Collected by 20~30min about200mL to the liquid in the Erlenmeyer flask, to stop distillation. Lowering of the Erlenmeyer flask, condenser tube left the surface, allow excess condensed water to drip into the bottle, and then rinsing with water condenser tube ends, water drip into the bottle.Ensure that release ammonia into the Erlenmeyer flask quantitatively, liquid in the bottle is green. 10 or 25mL pipette calibration sulfuric acid titration of liquid in the bottle and, until the color becomes purplish red, read number of ml of the standard solution of sulphuric acid consumption. Determination of the number: measured on the same sample twice. Blank: reagent blank determination, such as sample containers containing nitrogen, then the container should be blank. 6, the results of the calculation method: ammonia nitrogen content in starches are sample weight to the original weight of the sample expressed as a percentage of weight in the formula: x--sample nitrogen,%;T--standards for titration of moles of sulfuric acid concentration, mol/l; Vo--blank with sulfuric acid solution volume,Standby Mode:备用模式The winch will automatically shutdown when the system tension stays within a prescribed deadband for a set minimum time. This allows the winch to remain idle when no compensation of belt tension is required.The belt tension display remains active to allow an operator to continue to observe thewinch, but the motor and drive system is disabled. When the winch enters this standby mode it continues to monitor the belt tension and will reactivate if the belt tension falls outside the deadband. The reactivation time for the winch is less than 3 seconds to increase or decrease tension.当系统张力在预设定的时间内维持设定张力范围内，绞车自动停车，使得胶带张力不需要补偿时，绞车保持怠速。