Asphalt heat pump no overload design technology used in different fields, play an important role in the industry and value, the following briefly introduce the use of asphalt heat pump in the industry, in accordance with the corresponding ways and means to ensure that asphalt insulation Pump in use in good use value and role. This article Keywords: pump
Therapeutic heating pads usually operate from household current and must have protection against overheating.
A moist Heating Pad is used dry on the user's skin. These pads register temperatures from 76 to 82 °C (169 to 180 °F) and are intended for deep tissue treatment and can be dangerous if left on unattended. Moist heating pads are used mainly by physical therapists but can be found for home use. A moist cloth can be added with a stupe cover to add more moisture to the treatment.
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In a typical centrifugal oil pump, the power always increases with the increase of the flow rate. That is to say, the power curve is a curve that increases with the increase of the flow rate, which brings a problem to the use of the asphalt heat preservation pump. When The pump is safe to use at pump operating at design duty points less than motor rated power, but increases as pump head decreases (as can be seen from pump performance curves), and power When the flow rate exceeds the design point flow and reaches a certain value, the input power of bitumen insulation pump may exceed the rated power of the motor and cause the motor to over load and burn out.When the motor overload operation, either the protection system action to stop the pump rotation; Either the protection system failed to burn the motor.
Asphalt insulated pump head is lower than the design conditions of the use of head lift, in practice, is often encountered, a situation is the pump selection, the pump lift election too high, and the actual use of the pump is Reduce the use of head; the other case, in the use of the pump is not very good to determine the working conditions, in other words, the pump flow needs to be adjusted frequently; there is another case where the pump needs to be changed frequently. These three Inadequate conditions may affect the reliability of the pump by overloading the pump, so to speak, the use of a pump without a full head feature (including a submersible sewage pump) can be greatly limited.
The so-called full head characteristic (also known as no overload characteristics) refers to the power curve increases with the flow rate increases very slowly, more desirably when the flow rate increases to a certain value, the power will not only rise again, but will have Drop, that is, the power curve is a hump curve, if so, we simply select the motor rated power slightly more than the hump point power value, then the flow of 0 to the maximum flow of the entire range, whether you are in that one Operating conditions point, the pump power will not exceed the motor power and the pump overload, pump with this performance, either selection or use, it will be very convenient and reliable. In addition, the motor power is not worth Too large, you can save considerable equipment costs.
