Construction of small stainless steel submersible pump QJ-type submersible pumps mainly by the QJ-type small stainless steel submersible pumps and submersible motors YQS-type two parts. QJ submersible pump pump is located in the top of the motor, the impeller is centrifugal, bearing water lubricated rubber bearings, pump and motor shaft coupling with rigid connection. In the pump with the upper end of the check valve body, used to prevent the pump outage, due to reverse flow of water caused by submersible pump. YQS-type submersible motor stator winding using polyethylene insulated nylon sheathed magnet wire. Motor cavity filled with clean water, used to cool the motor and lubrication of vehicles bearing, motor internal rubber regulator film can be adjusted due to the motor temperature rise caused by the expansion and contraction of the body water pressure difference, the motor shaft is equipped with the upper end rejection Sand ring and two reverse installation of sand control, to prevent the water into the body inside the sand.
Preparation before installation:
As the pump bearings with water lubrication material, it is absolutely not dewatering operation. Even in a short time to start the motor must also avoid dry operation, so as not to damage the pump bearings. Motor part of the inspection: motor before going down, you should check the assembly quality is good, whether the phenomenon of loosening fasteners, whether the cable damage, power and electrical equipment is reliable. Check whether the motor shaft rotation is flexible or not. As well as whether the damage during transport, pump shaft is flexible, narrow whether the amount of axial requirements, whether the check valve action. Before the pump is put into the well, the motor must be filled with clean water (not including sand).
? According to the cable connector technology described method:
Connect the motor lead-out cable to the external rubber cable. Check the winding (including the lead cable) on the base insulation resistance of not less than 200M8. From the well water section to check whether the pump rotation is flexible, if stuck phenomenon, should identify the reasons to be excluded. The pump and motor are connected together and fastened with screws.
Install the required equipment and tools:
(1) reliable lifting equipment (such as small cranes)
(2) for the wrench, hand hammer, screwdriver, electrical tools and megger, clamp ammeter and so on.
(3) cable lashing line.
Electric pump installation:
(1) In the electric pump check valve body connected to a short pipe, in the appropriate position of the pipe clamping clamping plate. Lift the pump, slowly into the well, until the splint to reliably put on the well, loosen the hook, the second section of the tube reliably connected to the first section of the tube, tighten the screws, and then remove the first To pay the plywood, follow the above method to continue the whereabouts of the pump, install all the pipes (Yang pipes). Finally, clamp the clamp in the appropriate position of the tube, firmly fixed to the well stage, connected to the water pipe (head).
(2) The pump should be submerged below the water level, the bottom from the bottom of the well is not less than 3m, but the depth of not more than 70m into the motor part can not be installed to contact with the sediment. Otherwise, the motor due to heat is not good, will overheat burned.
(3) cable installed in the downhole, should not be distorted and over-tensioned, the application of wire with the cable each section of the water pipe (water pipe) tied together the upper and lower ends.
in conclusion:
Continue to practice and explore, in order to improve the wellhead submersible pump installation quality, in order to ensure the installation of the normative and durable. In addition, the installation of a small stainless steel submersible pump continuous shutdown time shall not exceed 14d, otherwise, the impurities in water, precipitation in the bearing and impeller clearance, and even block the pump shaft. If the working environment requires more than 14d downtime should be at least once every 14d start running 5min to ensure that the unit at any time boot.
As the pump bearings with water lubrication material, it is absolutely not dewatering operation. Even in a short time to start the motor must also avoid dry operation, so as not to damage the pump bearings. Motor part of the inspection: motor before going down, you should check the assembly quality is good, whether the phenomenon of loosening fasteners, whether the cable damage, power and electrical equipment is reliable. Check whether the motor shaft rotation is flexible or not. As well as whether the damage during transport, pump shaft is flexible, narrow whether the amount of axial requirements, whether the check valve action. Before the pump is put into the well, the motor must be filled with clean water (not including sand).
? According to the cable connector technology described method:
Connect the motor lead-out cable to the external rubber cable. Check the winding (including the lead cable) on the base insulation resistance of not less than 200M8. From the well water section to check whether the pump rotation is flexible, if stuck phenomenon, should identify the reasons to be excluded. The pump and motor are connected together and fastened with screws.
Install the required equipment and tools:
(1) reliable lifting equipment (such as small cranes)
(2) for the wrench, hand hammer, screwdriver, electrical tools and megger, clamp ammeter and so on.
(3) cable lashing line.
Electric pump installation:
(1) In the electric pump check valve body connected to a short pipe, in the appropriate position of the pipe clamping clamping plate. Lift the pump, slowly into the well, until the splint to reliably put on the well, loosen the hook, the second section of the tube reliably connected to the first section of the tube, tighten the screws, and then remove the first To pay the plywood, follow the above method to continue the whereabouts of the pump, install all the pipes (Yang pipes). Finally, clamp the clamp in the appropriate position of the tube, firmly fixed to the well stage, connected to the water pipe (head).
(2) The pump should be submerged below the water level, the bottom from the bottom of the well is not less than 3m, but the depth of not more than 70m into the motor part can not be installed to contact with the sediment. Otherwise, the motor due to heat is not good, will overheat burned.
(3) cable installed in the downhole, should not be distorted and over-tensioned, the application of wire with the cable each section of the water pipe (water pipe) tied together the upper and lower ends.
in conclusion:
Continue to practice and explore, in order to improve the wellhead submersible pump installation quality, in order to ensure the installation of the normative and durable. In addition, the installation of a small stainless steel submersible pump continuous shutdown time shall not exceed 14d, otherwise, the impurities in water, precipitation in the bearing and impeller clearance, and even block the pump shaft. If the working environment requires more than 14d downtime should be at least once every 14d start running 5min to ensure that the unit at any time boot.
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Small stainless steel submersible pumps, water pipes well engineering
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