The stainless steel horizontal centrifugal pump has simple structure and convenient maintenance; the fixing device has no vibration, good sealing and low noise. However, the suction height of the horizontal centrifugal pump is limited, and the installation position of the water pump is very low, which is easy to get damp and affect the operation.
Although there are defects in stainless steel horizontal centrifugal pumps, the prospects for the use of horizontal centrifugal pumps in my country today are very bright, and they play a very important role in urban environmental protection, fire protection, chemical industry, electric power, papermaking, petroleum, pharmaceuticals and other industries. With the participation of a team of experts and scholars, the strengths of the centrifugal pump will be brought into play, and the shortcomings will be better improved.
Stainless steel horizontal centrifugal pump construction and installation
1) The following rechecks should be made before the pump is in place; the size, position and elevation of the foundation should meet the design requirements; the equipment should not have missing parts, damage and corrosion, etc. Flexible, no blockage, stuck phenomenon, no abnormal sound.
2) The components that have been assembled and debugged at the factory should not be disassembled at will.
3) Leveling and alignment of stainless steel horizontal centrifugal pump installation.
The height of the water pump foundation above the ground shall be convenient for the installation of the water pump and shall not be less than 0.1m. After the water pump is transported to the location, carry out equipment hoisting and installation, and place it accurately on the already prepared equipment foundation, then put on the anchor bolts and nuts, place pad iron under the base, use a level to initially level, and the inside of the anchor bolts Concrete.
After the concrete solidification period expires, carry out fine leveling and tighten the anchor bolt caps. Each set of pad irons is fixed by spot welding, and the surface of the foundation is roughened. After washing with water, smooth it with cement mortar.
4), pipeline installation should meet the following requirements:
(1) The inside of the pipe and the pipe end should be cleaned, the sealing surface and the thread should not be damaged, and the flange end faces or thread axes connected to each other should be parallel and centered, and no forced connection should be made. The weight of the pipeline should not be added to the water pump and should have its own support body.
(2) After the pipeline is connected to the pump, welding and gas cutting should not be performed on it. If welding or gas cutting is required, the pipeline should be removed or necessary measures should be taken to prevent welding slag from entering the pump and damaging the pump parts .
After the installation is completed, there should be no friction sound or stuck phenomenon when the pump shaft and impeller are moved, otherwise the pump should be disassembled to check the cause.
(3) The pipeline configuration should be rechecked according to the equipment data and design drawings.
(4) Valves, check valves and pressure gauges should be installed on the outlet pipe of each water pump; when the water pump directly draws water from the outdoor water supply pipe network, valves, check valves and pressure gauges should be installed on the suction pipe The water pump is provided with a bypass pipe equipped with a valve.
5) Vibration isolation and noise prevention of water pumps: flexible rubber joints or bellows metal joints should be installed on the water pump inlet and outlet pipes; elastic hangers and elastic brackets should be used for pipe supports; in order to create a good vibration isolation effect, the foundation Vibration isolation, pipeline vibration isolation and bracket vibration isolation must be matched. Among them, the area, number of layers, number, type, and type and number of flexible joints of vibration isolation pads (shock absorbers) must be selected according to the calculation results and Install. Parameters such as the type, positioning size, and matching quantity of the shock absorber are directly related to the stability and vibration reduction effect of the water pump. The determination of these parameters must be confirmed by professional technicians.
Measures should be taken to prevent solid sound transmission where the water pump is extruded through the wall and floor.
6) Key points of water pump debugging
On the premise that the electrical control ensures safety, sensitivity and reliability, the stand-alone test run of the water pump is carried out.
Close the valve on the outlet pipe of the stainless steel horizontal centrifugal pump, and gradually open it as the pump starts to operate, and check whether there is any abnormality, whether the temperature rise of the motor, the operation of the water pump, the value of the pressure gauge, and the tightness of the interface meet the requirements, etc.
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