throttling adjustment

The principles of adjustment method for centrifugal pump ′ s operation, including throttling adjustment, flow dividing adjustment, adjustment through coupling pumps in series or in parallel, and rotating speed adjustment are introduced.

详细介绍了离心泵的节流调节、分流调节、串并联调节和变速调节等主要运行调节方式的调节原理、调节方法、调节范围。

This thesis expounds that gearshift adjustment has more advantages than throttling adjustment through the comparison between the ways of gearshift adjustment and throttling adjustment by the weater pumps.

以水泵为例，通过对水泵变速调节与节流调节两种方法的比较，说明了泵与风机变速调节优于节流调节的观点。

The water pump has been transformed can both satisfy the load adjustment needs of heating boiler, and decrease even eliminate export throttling loss of water pump, which has reduced the water pump consumption of electrical energy, and got good economic benefits.

改造后的水泵既能满足供暖锅炉负荷调整需要，又能减少甚至消除水泵出口节流损失，降低了水泵电能消耗，取得了良好的经济效益。

The Comparison between Pumps and Fans about Gearshift Adjustment and Throttling Adjustment

泵与风机变速调节与节流调节的比较