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The direct-drive PC Pump motor

HXL series high-efficient intelligent screw pump ground direct drive device has the rated power of 12.6 to 50 kW. Compared with the traditional screw pump ground direct drive, the belt and the reducer casing are removed, and system operation is stable. There are almost no wearing parts except for daily bearing lubrication and maintenance. The failure rate is lower than that of the traditional belt drive, and repair is time saving and labor saving. The key component is the rare earth permanent magnet motor, and the motor can be replaced for free in case of demagnetization within 10 years, which greatly reduces repair cost of the user at the later stage.

Huaxin Company is the first manufacturing enterprise researching, developing, obtaining patent of and manufacturing the explosion-proof permanent magnet motor for mining in China, and related products have been sold to the coal enterprises in Shanxi, Shandong, Gansu, Heilongjiang, Inner Mongolia and other regions in the country.

Technical parameters
Product features
Purpose
Environment for use

Model description

Model description for TYC series high-efficient intelligent screw pump ground direct drive equipment

Technical parameters

Model	Motor parameters
Model	Rated torque	Rated Rotating speed (r/min)	Working system	Rated Power (Kw)	Number of pole pairs (P)	Rated Frequency (Hz)	Wiring mode	Insulation level	Protection level
HXL280-12.6-200-L	600	200	S1	12.6	12	40	Y	F	IP54
HXL280-18.9-200-L	900	200	S1	18.9	12	40	Y	F	IP54
HXL280-23.1-200-L	1100	200	S1	23.1	12	40	Y	F	IP54
HXL280-28.3-200-L	1350	200	S1	28.3	12	40	Y	F	IP54
HXL280-31.5-200-L	1500	200	S1	31.5	12	40	Y	F	IP54
HXL280-40-200-L	1910	200	S1	40	12	40	Y	F	IP54
HXL280-50-200-L	2355	200	S1	50	12	40	Y	F	IP54

　1. Compared with the traditional belt type screw pump ground drive - obvious advantages

Ø Strong overload capability, long duration, preventing a big horse pulling a small carriage, excellent performance

Ø Soft start technology realizes reliable shutdown, preventing high-speed reverse rotation, good safety

Ø The gravity center is concentric with oil well without yaw, which effectively reduces the problem of packing leakage

Ø Stable operation, maintenance-free, cancellation of the gearbox and the belt, simple operation

Ø Low operating noise, suitable for the urban area, especially operation in the residential area

Ø High system efficiency, obvious energy saving, the formula is as follows:

in which: ? - Screw pump system efficiency, %;

P_有- Screw pump effective power, kW;

Q - Oil well fluid production rate, m³/d;

H - Effective lift, m;

p - Oil well fluid density, kg/m³;

g - Gravity acceleration, 9.8 m/s₂;

P_輸入 - Screw pump input power, kW;

I - Measured current value, A;

U - Measured voltage value, V;

cos φ - Power factor.

　　2. Compared with the traditional belt type screw pump ground drive - efficiency analysis of both

Ø The efficiency of the asynchronous motor of the traditional driving equipment is 75％, and the power factor is 0.4. The transmission efficiency of the general belt is 92％, and the gear efficiency of the reducer casing is 92%. Therefore, the efficiency of the traditional mechanical screw pump is only: 75％x92％x92％＝63.5％.

Ø The efficiency of the direct-drive permanent magnet synchronous motor is generally 90％ (calculation coefficient of 90%), the frequency converter efficiency is 95％ to 97％ (calculation coefficient of 96%), and the reactive power saving is 5％. Therefore, the efficiency of the direct-drive screw pump motor is: 90％x96％＝86.4％.

Ø Therefore, compared with the traditional mechanical screw pump, the direct-drive screw pump saves power by 23%.

3. Compared with the traditional belt type screw pump ground drive - efficiency analysis of both

Well number	Type	Current	Voltage	Daily fluid production rate	Water content rate	Dynamic liquid level	Oil pressure
Well number	Type	(A)	(V)	(t)	(%)	(m)	(MPa)
L3-2935	Screw	26	266	35.69	97.5	531.25	0.4
L4-P281	Screw	29	282.6	74.27	94.72	418.11	0.43
L3-P291	Straight	11	280.8	51.46	94.00	361.98	0.26
L3-2917	Straight	7	279	31.07	95.50	375.29	0.29

　Select the measured data of both equipment with similar production conditions (Daqing Oil Production Plant 6)

Comparison of current and daily fluid production rate (above table)

Ø It can be seen from comparison with the table that the system efficiency of the direct-drive device is improved by 12.5% than the belt driving device, and power is saved by 32%. It is consistent with the theoretical analysis results. Therefore, power saving of the direct-drive screw pump is obvious, realizing production increase and consumption reduction!

4. Comparison of repair and maintenance

　　The belt and reducer casing are removed from screw pump ground direct drive, and system operation is stable. There are rarely wearing parts except for daily bearing lubrication and maintenance. The failure rate is lower than that of the traditional belt drive, and it is time-saving and effort-saving for repair. The key component is the rare earth permanent magnet motor, the motor can be replaced for free in case of demagnetization within 10 years, and repair cost at the later stage is greatly reduced.

HXL series high-efficient intelligent screw pump ground direct drive equipment is widely applied in the mine, petroleum, building materials and other industries at the power input mechanism.
1. Elevation height: ≤ 1000m.

2. Environmental air temperature: -60℃ to 60℃.

3. Frequency: 0 to 50Hz.

4. Limit value of stator winding temperature rise (resistance method): ≤80K

5.Protection class: IP54.