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GFGCS-5200热泵控制系统


人机界面(Man-Machine Interface)


喷射泵的原理(Principles of jet pump)

  造纸机干燥部采用的蒸汽喷射式热泵,或称热能压缩机。 蒸汽喷射式热泵利用热电站或锅炉供出蒸汽压力和烘缸用汽压力差的能量转换为热泵的动力。蒸汽喷射式热泵工作能力即供出的蒸汽压力、抽吸二次蒸发汽的能力和消耗的新蒸汽量等均同工作蒸汽的品位密切相关。

  Dryer section of paper machine adopts steam jet pump, which is also called thermal compressor. Steam jet pump transfers energy of pressure difference between vapor pressure provided by thermal power station or boiler and steam dryer into pump power. The working capacity of steam jet pump, namely  supplied steam pressure, capacity of pumping second evaporation steam and amount of new steam consumed,  are all closely related to grade of working steam.

  

  


喷射泵的基本功能(Basic function of jet pump)可调节式喷射泵是进口工作蒸汽干管上不需设置调节阀,喷射泵本身配置调节机构和喷射泵喷嘴断面调节阀芯等,当纸机运行工况发生变化时,通过喷射泵自身调节机构调节和改变喷嘴通过蒸汽的有效断面积。在调节过程中它不会改变新蒸汽压力,使其在适应纸机运行工况变化的调节过程中,只需调节喷嘴的有效断面积,则其单位流量新蒸汽做功能力不会改变。纸机在各种运行工况条件下可调节喷射泵均可优化运行。

  Adjustable Jet Pump  does not require setting of adjusting valve on imported working steam pipe since it has been equipped with adjustment mechanisms and adjustment valve on the jet pump nozzle section etc. itself. When there is change in operation status of paper machine, it will adjust and change effective sectional area that nozzle passes through steam by self adjustment mechanisms of jet pump. In the process of adjustment, it will not change new steam pressure, but only have to adjust effective sectional area of the nozzle in process of adapting to operation status of paper machine. Then the unit flow new steam working capacity will not change. The paper machine can adjust jet pump under various operation status, which can all be optimized for operation.


  

  可调式喷射泵本身配有调节机构(替代了蒸汽管道上调节阀)、阀门定位器及调节阀芯等,关键部位均采用不锈钢材质,喷镀特殊耐磨金属材料,通过改变蒸汽的喷嘴有效断面实现热泵工况即供汽压力、供汽负荷调节。在喷射泵调节过程中,喷射泵入口新蒸汽压力均不变,调节性能好、喷射泵效率高。对产量、车速等纸机工况变化适应性较宽。

  Adjustable Jet Pump itself is equipped with adjustment mechanisms (replace adjustment valve on steam pipe), valve localizer and adjustment valve etc.. It adopts stainless steel, special wearresistant metal plating in all key parts and realizes adjustment of heat pump operating conditions namely adjustment of steam pressure and steam load by changing effective section of steam nozzle. In process of jet pimp adjustment, the new steam pressure in inlet of jet pump keeps unchanged. It boasts fine adjustment performance and high efficiency of jet pump, which has a wide adaptability to change of paper machine operation status such as output and travelling speed.






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