Petroleum chemical process pump, chemical pump general installation requirements

Petroleum chemical pump is the pump, aspects and so on petroleum chemical process using for petrochemical these substances are fuel, and the material requirement for temperature and pressure are higher, so the oil chemical pump compared to other types of pumps are more advanced. Such as: ZA, ZAK, ZAG type oil chemical process water pump is very typical petrochemical pump.

due to delivery is fuel, oil chemical process pump must use reliable seal, and pump without leakage. If the delivery of material corrosion resistance is strong, also need to use the corrosion resistance of the material. If delivery material containing solid particles, oil chemical pump flow components abrasion resistance must be better, even, also need the shaft seal is washed with clean liquid, let's look at a specific installation requirements.

petroleum chemical process pump installation:

petrochemical pump assembly sequence can largely be carried out in accordance with the disassembly sequence in the opposite direction, but when the assembly should pay attention to check the sealing gaskets are in good condition, and do not been packing gaskets and replace the gasket.

1, when unpacking the case to check the pump and motor, if confirmed that there is no damage in the process of loading, unloading and transportation and fasteners loose fitting, the import and export end cover of the pump in good condition, no dust, dirt, etc into the pump, removal of cleaning and assembly is the proportion is not new, directly to use the site to install.

2, must ensure that the pump does not exceed the allowed NPSH at work. On the pump suction height ( Or backward level) Must be based on the characteristics of the pump NPSH pipeline resistance loss characteristics and high temperature water suction fluid level to determine the pressure.

pump suction on use cases, should put bottom valve in the suction pipe and and priming on the outlet pipe road set screw hole or valves, for pump priming before starting.

pump flow backward use cases, should put the valve in the suction pipe and filter, so as to avoid clutter.

3, breathe and piping should be otherwise stents, cannot use pump as support.

4, the location of the pump installation, should be easy to carry out inspection and maintenance. For new installation of the suction pipe and spit out line, should clean up the sundry rear can join to form the circulation line with pump.

5, installation order

( 1) Put the unit in buried with anchor bolt, on the basis of placed pairs of wedge between base and foundation mat for alignment.

      ( 2) Loosen the coupling. Use level on the cylindrical pump or pump shaft coupling, by adjusting the wedge cushion, looking for is the unit level, tighten the anchor bolts, just in case.

      ( 3) In the concrete base and the anchor bolt hole.

      ( 4) After concrete dry solid, should tighten the anchor bolts, and to check the levelness of the water pump shaft.

      ( 5) After a good pick up line and determine the prime motor rotation direction, coupling is connected, check the shaft concentricity, again to measure the coupling cylindrical, up and down or so difference should not exceed 0. 1 mm, two coupling end clearance and the clearance between the maximum and minimum difference within a week, shall not exceed 0. 3mm。

      ( 6) In actual operation of 3 ~ 4 hours after final inspection, if there is no negative phenomenon, is considered qualified installation.

oil chemical process pump installation requirements:

1, the anticorrosion measures for petrochemical pump main oil chemical substances, such as some of the material corrosion resistance is strong, so at the time of installation of petrochemical pump corrosion protection measures must be taken.

2. If oil chemical pump is installed in the outdoor, also need to consider whether or not the petrochemical pump will be appear cold short phenomenon, the low temperature resistance must choose good material.

petroleum chemical process pump installation requirements 2: explosion-proof measures

due to the particularity of petrochemical pump, is likely to be used in flammable and explosive area, because the blast area is hierarchical, so in the area of explosion level is higher, must use explosion-proof motor. For petroleum chemical pump, must check regularly.

1, each year for a major overhaul of the factory, the continuous operation of the pump cycle generally should not be less than 8000 h. To adapt to the requirement of 3 years a major overhaul, API 610 ( The 10th edition) Petroleum, petrochemical and gas industry pump cycle for at least 3 years in a row.

2, petrochemical pump design life is generally at least for 10 years. API 610 ( The 10th edition) Petroleum, petrochemical and gas industry with centrifugal pump design life of 20 years at least.

3, petrochemical pump design, fabrication, inspection should comply with the relevant standards and norms.

4, factory should guarantee the water pump in the performance of the power supply voltage, frequency range. The extent of the change of the power supply voltage and frequency as follows: the voltage to 380 v + 10%, to 6000 v + 10%; Frequency 50 hz + 1 hz.

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