Sealless centrifugal pumps can be divided into magnetic drive centrifugal pumps (hereinafter referred to as magnetic pumps) and shielded pumps. They only have static seals and no dynamic seals in structure, so they can ensure no leakage when transporting liquids. With the continuous improvement of environmental protection requirements, the application of sealless centrifugal pumps is becoming more and more extensive.
The non-shaft seal magnetic pump protection system mainly includes:
1. Bearing condition monitor
If the user needs, some internationally renowned manufacturers can configure the non-contact bearing condition monitor to prevent bearing wear failure, coupling decoupling, rotor jam, and power system failure.
2. Motor power monitor
Motor power monitors prevent low flow or dry running by monitoring motor power.
3. Temperature probe
A temperature probe (RTD) is used to monitor the temperature of the isolation sleeve to reflect the changes in the state of the chemical pump during operation. It can prevent dry running of the pump, wear of internal and external bearings, severe cavitation, stuffy pump, pump stuck, and system overheating.
4. Differential pressure switch
The differential pressure switch is used to monitor the pressure change at the pump outlet, which can prevent dry operation, severe cavitation, boring pump, pump stuck, etc. Especially suitable for container unloading/tank unloading, etc.
The canned pump pump protection system mainly includes
1. Bearing wear monitor
Bearing wear monitors are available in mechanical, electrical, mechanical and electrical types. When the canned pump is running, the operation of the bearing can be monitored at any time through the bearing wear monitor. When the bearing wear is large, it will be stopped to repair or replace the bearing. If the bearing is damaged during operation, it will be stopped immediately.
2. Current protector
When the canned pump runs dry without liquid, it will cause bearing damage. When the flow rate is greatly reduced, the current will also be greatly reduced. At this time, the current protector can automatically act and stop. Similarly, when the load is too large, the current increases more, and the current protector will also act to automatically cut off the current and stop the motor to prevent accidents.
https://www.wxxjyby.com/