CN2555429Y - Horizontal wide V-shape belt mechanical stepless speed governing driving gear for screw pump - Google Patents

Abstract

The utility model discloses a horizontal wide V-shaped belt mechanical stepless speed governing driving gear for a screw pump, and the gear belongs to the field of an oil extraction ground power input apparatus for the screw pump. The utility model is designed for solving the problem that the wide V-shaped belt of the current drive device is difficult to be changed, the tray root box leaks the outlet oil and the current drive device can not be used for Theta 38mm special oil pumping rod. The gear decelerator is transmitted by a conical gear 7; a drive motor 1 is horizontally arranged; the inner diameter of the transmission shaft is enlarged to Theta 40mm; the lower part of a filling box 5 is additionally provided with a mechanical seal 3. The utility model is mainly applicable to the oil extraction device for the screw pump in oil field, and has the advantages of convenient operation of changing the wide V-shaped belt, no leakage of the sealing part, improving the transmission efficiency of the whole crew pump system, reducing the daily management fee and so on.

Description

The horizontal wide V band mechanical stepless speed-regulating drive unit of screw pump

Technical field: the utility model belongs to power input technology field, screw pump oil production ground.

Background technique: the vertical wide V of the screw pump of The field is with the mechanical stepless speed-regulating drive unit at present, as shown in Figure 3, be subsurface progressive cavity ground power input device, mainly form by motor 15, side's card 16, transmission shaft 17, wide V band mechanism 18, casing 19, one-level gear pair 20, secondary gear pair 21, selfaligning bearing 22, inversion controller 23, stuffing box 24, arrangements for speed regulation 25, bearing 26, polished rod 27 parts.The power resources of drive unit are motor 15, be with mechanism 18 to carry out speed change by wide V, slow down through one-level gear pair 20 and secondary gear secondary 21 again, this moment, the output torque of transmission shaft 17 was given polished rod 27 and rod string and underwell pump rotor by the connection transmission of side's card 16, screw pump work, to ground, the oil outlet by the drive unit bearing enters gathering line to the liquid that lifting goes out by the ring-like space of rod tube.

During the speed governing of the vertical wide V band of screw pump mechanical stepless speed-regulating drive unit,, change the distance of wide V band mechanism 18 half between taking turns and realize stepless speed regulation by regulating arrangements for speed regulation 25.Because wide V band is easily damaged parts, so need periodic replacement.When changing wide V band, need employ equipment handling rod strings such as crane, dismounting side blocks 16, the loam cake of motor 15 and casing 19, the tape swapping difficulty.The internal diameter of the transmission shaft 17 of the vertical wide V band mechanical stepless speed-regulating drive unit of screw pump is Φ 34mm, adapts to the polished rod diameter and is no more than Φ 32mm, can not be used for the special-purpose anticreep sucker rod of Φ 38mm screw pump.The fluid of screw pump suction arrives well head, enters gathering line by the oil outlet under the drive unit stuffing box 24, and general wellhead back pressure remains on about 1MPa, for sealing up this fluid, adopts packing seal structure in the lower end of polished rod 27.Reasons such as because polished rod 27 rotation has vibration, and sealing is the oil gas water mixture of certain pressure, and operating conditions is abominable, this sealing configuration effect of field application is bad, and general sealing life is short, need frequently add and change packing, oil leakage phenomenon is serious, causes the well site to pollute and the field management difficulty.

Summary of the invention: the purpose of this utility model provides a kind of wide V band and changes conveniently, and extraction fluid is not leaked at the packing box place, and can be applicable to the horizontal wide V band mechanical stepless speed-regulating drive unit of screw pump of the special-purpose anticreep sucker rod of Φ 38mm.The utility model mainly is made up of drive motor, arrangements for speed regulation, mechanical seal device, bearing, stuffing box, selfaligning bearing, bevel gear pair, transmission shaft, gear housing, inversion controller, square card, polished rod, wide V band mechanism and narrow V belt transmission part.Wherein the horizontal layout of drive motor is fixed on the bearing by Bolt Connection.Drive motor is with between the mechanism with wide V and is connected by the narrow V belt transmission.Wide V band mechanism is bevel gear pair in the gear housing by the side of bolt in gear housing, adopts splined between the output shaft of wide V band mechanism and the pinion shaft of bevel gear pair.Polished rod passes transmission shaft and is connected by side's card.Transmission shaft is fixed on the gear housing by bevel gear pair and selfaligning bearing.Bottom at stuffing box installs mechanical seal device additional.

The utlity model has following advantage, a, wide V band mechanism adopts horizontal type structure, and adopts integrated design, and it is convenient to change wide V band, needn't employ equipment such as crane, and a people gets final product complete operation.B, hollow shaft endoporus are increased to Φ 40mm, can use the special-purpose anticreep sucker rod of Φ 38mm screw pump.C, install mechanical seal additional in the stuffing box bottom, replace packing seal, in normal operation, mechanical seal can reach the requirement of no seepage and no leakage in the device operation process, packing box is inoperative, the daily management of drive unit need not to add packing, the gland that does not require packing box compresses, compare with existing working state, can the reduce friction generation of moment of torsion of transmission shaft, improve the transmission efficiency of whole screw pump system, just have under the situation of slight seepage in mechanical seal, the gland of gland packing box both can.

Description of drawings: Fig. 1 is the plan view of structure diagram of the present utility model;

Fig. 2 is the plan view of structure diagram of the present utility model;

Fig. 3 is the structure diagram of existing vertical stepless speed regulation drive unit.

Embodiment: the utility model mainly is made up of drive motor 1, arrangements for speed regulation 2, mechanical seal device 3, bearing 4, stuffing box 5, selfaligning bearing 6, bevel gear pair 7, transmission shaft 8, gear housing 9, inversion controller 10, side's card 11, polished rod 12, wide V band mechanism 13 and narrow V belt transmission 14 parts.Wherein drive motor 1 horizontal layout is fixed on the bearing 4 by Bolt Connection.Drive motor 1 is with between the mechanism 13 with wide V and is connected by narrow V belt transmission 14.Wide V band mechanism 13 is bevel gear pair 7 in the gear housing 9 by the side of bolt in gear housing 9, adopts splined between the output shaft of wide V band mechanism 13 and the pinion shaft of bevel gear pair 7.Polished rod 12 passes transmission shaft 8 and is connected by side's card 11.Transmission shaft 8 is fixed on the gear housing 9 by bevel gear pair 7 and selfaligning bearing 6.Install mechanical seal device 3 additional in the bottom of stuffing box 5.

Compare with vertical stepless speed regulation drive unit, power source of the present utility model is a drive motor 1, at first carrying out one-level by narrow V belt transmission 14 slows down, be with mechanism 13 to carry out stepless change through wide V then, by bevel gear pair 7 moment of torsion is passed to transmission shaft 8 again, the moment of torsion transmission between transmission shaft 8 and the polished rod 12 realized by being connected of side's card 11.Drive motor 1 adopts horizontal layout, when changing wide V band, removes narrow V belt 14, and the end cap of dismantling wide V band mechanism 13 get final product, needn't dismantle drive motor and side's card, more need not go up crane and move roofbolt.Install mechanical seal device 3 additional in the bottom of stuffing box 5, replace packing seal, in normal operation, mechanical seal can reach the requirement of no seepage and no leakage in the device operation process, packing box is inoperative, the daily management of drive unit need not to add packing, the gland that does not require packing box compresses, compare with existing working state, can the reduce friction generation of moment of torsion of transmission shaft, improve the transmission efficiency of whole screw pump system, just have under the situation of slight seepage in mechanical seal, the gland of gland packing box both can.Transmission shaft 8 endoporus are increased to Φ 40mm, can use the special-purpose anticreep sucker rod of Φ 38mm screw pump.

During the utility model The field, identical with the on-the-spot mounting process principle of existing drive unit, during installation this device being passed polished rod 12 is sitting on the oil recovery well well head, the bearing 4 of this device bottom links to each other with clip by bolt with the oil production technology flow process with the oil recovery well well head, carry over-stroke, seat side's card 11.

Claims (1)

1, the horizontal wide V band mechanical stepless speed-regulating drive unit of screw pump belongs to power input device field, screw pump oil production ground; It is by drive motor (1), arrangements for speed regulation (2), stuffing box (5), side's card (11), polished rod (12), wide V is with mechanism (13) parts to form, it is characterized in that: it is also by mechanical seal device (3), bearing (4), selfaligning bearing (6), bevel gear pair (7), transmission shaft (8), gear housing (9), inversion controller (10), form with narrow V belt transmission (14) parts, the horizontal layout of drive motor (1) wherein, be fixed on the bearing (4) by Bolt Connection, drive motor 1 is with between the mechanism (13) with wide V and is connected by narrow V belt transmission (14), wide V band mechanism (13) is by the side of bolt in gear housing (9), in the gear housing (9) bevel gear pair (7), adopt splined between the output shaft of wide V band mechanism (13) and the pinion shaft of bevel gear pair (7), polished rod (12) passes transmission shaft (8) and is connected by side's card (11), transmission shaft (8) is fixed on the gear housing (9) by bevel gear pair (7) and selfaligning bearing (6), installs mechanical seal device 3 additional in the bottom of stuffing box (5).

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