3.1 Driver and transmission 3.1.1 The ratio of the rated output power of the driver to the rated shaft power of the pump should be at least equal to the percentage given in Figure 2 on page 4 of GB / T5656-94 standard, the rated output power value must not be less than 1KW . 3.1.2 When the steam turbine is used as a driving machine, its rated output power shall be at least 110% of the pump shaft power and transmission loss (at rated point of the pump and normal steam conditions). 3.1.3 Transmission (including transmission) rated power at least equal to the rated output power of the driver. 3.2 Couplings and shields 3.2.1 Flexible couplings are commonly used. The coupling shall meet the requirements of transmitting the maximum torque of the drive machine and the maximum speed possible. 3.2.2 An extended coupling should be provided so that the pump rotor can be removed without moving the driver. 3.2.3 The manufacturer shall provide the coupling guard. If the pump is working in a hazardous area, the guard should be non-sparking. 3.3 Base 3.3.1 The base should be a single piece of cast iron or steel welding the overall structure for the installation of the pump and the contact surface of the driver should be machined. 3.3.2 When the pump is delivering flammable or toxic media, a draining pan that collects and releases the leaking liquid shall be provided on the base. The discharge area shall be inclined towards the discharge outlet with a slope of at least 1: 100. Flushing fittings shall be threaded at least 25 mm in diameter and mounted to the base at the end of the pump. 3.3.3 Unless otherwise specified, pumps and drives shall be mounted on a common base. 3.3.4 Unless otherwise specified, anchor bolts, nuts, washers, auxiliary lines and accessories shall be supplied by the manufacturer. 3.4 pipeline system 3.4.1 pump import and export should be flanged connection, single and double pump inlet and outlet flanges should be taken the same pressure level. 3.4.2 pump should have exhaust, drainage, seal flushing interface, these should be specified in the datasheet. 3.4.3 When the casing is made of alloy steel, all components of the process fluid line and / or flushing system shall be of a material equal to or better than the material of the casing and shall be steel. 3.4.4 Unless otherwise specified, corrosion of auxiliary lines and equipment, carbon steel and low alloy steel, should be at least 1.6mm. High alloy steel or non-ferrous metals do not need corrosion retention. 3.4.5 Cooling water outlet pipe should be set to observe the sight glass (hole). 3.4.6 thread joints for toxic or flammable media lines should be sealed welded to prevent leakage. 3.5 Special tools The seller should provide a set of special tools for the buyer to dismantle, install and maintain the use of maintenance.
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