CN2583358Y - Variable-speed well pumping unit - Google Patents
Variable-speed well pumping unit Download PDFInfo
- Publication number
- CN2583358Y CN2583358Y CN 02282740 CN02282740U CN2583358Y CN 2583358 Y CN2583358 Y CN 2583358Y CN 02282740 CN02282740 CN 02282740 CN 02282740 U CN02282740 U CN 02282740U CN 2583358 Y CN2583358 Y CN 2583358Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- pumping unit
- oil
- oil pumping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a speed change oil pumping unit, which is characterized in that eccentric gears 7, 8 are arranged at the output terminal in a speed change box, and shafts of the eccentric gear 7, 8 are not in the center of a circle of the eccentric gear. The utility model has the advantages of reasonable design, simple structure and no added production cost; the maintenance is the same as the conventional oil pumping unit. Because the running time of an upper stroke is long, and the running time of a lower stroke is relative short in use, the utility model can obviously increase the fill coefficient and the pump efficiency of the oil pump unit when the utility model can be used for producing oil in a well, and the utility model can obviously improve the balancing degree of the oil pumping unit and can increase the mechanical efficiency of the oil pumping unit.
Description
Technical field: the utility model relates to a kind of oil field mining site machinery, especially for a kind of speed change oil pumper of pumpingh well.
Technical background: before the utility model, though each oil field is used for all kinds of oil pumper method of operation differences of pumpingh well, but it is identical that the speed of service of its upper and lower stroke and time are, be the downhole pump feed liquor time to be 1/2nd of its working time, during as fluid supply capacity difference or oil situation such as thick, be to cause feed flow not enough and influence pump efficiency and oil well output; Simultaneously, also because oil pumper upstroke load is bigger, the identical speed of service also can cause dysequilibrium, and influences its mechanical efficiency.
Summary of the invention: the purpose of this utility model is to provide a kind of speed change oil pumper for pumpingh well production, promptly thereon during stroke during slow, the down stroke of the speed of service speed of service very fast, thereby increase the feed liquor time of down-hole deep well pump, reach the purpose that improves coefficient of fullness, pump efficiency and improve the balance of well pumping unit degree.
The purpose of this utility model realizes by following measure: a kind of speed change oil pumper, comprise oil pumping frame and the transmission mechanism of forming by power shaft in motor, belt pulley, the gearbox and travelling gear etc., it is characterized in that in gearbox output also is equipped with by the axle eccentric gear that constitutes of the conventional gear in its center of circle not.
The utility model is reasonable in design, simple in structure, do not increase cost of production, and working service is all identical with conventional pumping unit; Because its upstroke running time in when work is long, down stroke is shorter running time, can obviously improve the coefficient of fullness and the pump efficiency of downhole pump when being used for oil well production, also can obviously improve oil pumper the degree of balance, improve mechanical efficiency.
Description of drawings: Fig. 1 is the structural representation of speed change oil pumper.
The speed change oil pumper comprises oil pumping frame 9 and the transmission mechanism of being made up of the power shaft 3 in motor 1, belt pulley 2, the gearbox and travelling gear 4,5,6 etc., and output also is equipped with one group by the axle eccentric gear 7 and 8 that constitutes of the conventional gear in its center of circle not in its gearbox.
The specific embodiment: the operating principle of speed change oil pumper is when its work, and the power of motor 1 is by behind the belt pulley 2-power shaft 3- travelling gear 4,5,6-eccentric gear 7, is transmitted to crank on the oil pumping frame 9 by the output shaft on the eccentric gear 8 again.Because eccentric gear 7 and 8 is also identical conventional gears of eccentricity that a pair of identical diameter, flute profile (straight-tooth or helical teeth etc.) and modulus and axle are installed, the long and short complementation of eccentric throw of axle on two gears during installation just can realize installation (or repacking of conventional speed change case) and the normal engaged and the transmission operation of eccentric gear 7 and 8; Also owing on the crank spool be coaxial on the output shaft on the eccentric gear 8 and the oil pumping frame 9, then the change of eccentric gear 8 speeds of rotation can drive the change of the crank speed of rotation on the oil pumping frame 9, as long as the crank (being walking beam) on oil pumping frame 9 is in, during the centre position of bottom dead centre, with two eccentric gears 7,8 to be adjusted on eccentric gear 7 reference circles on the longest point in axle center and eccentric gear 8 reference circles apart from the axle center the shortest point tangent, and guaranteeing that crank is positive rotation (being that Fig. 1 is considered as turning clockwise) on the oil pumping frame 9, the upstroke speed of service is slower in the time of then can realizing pumping frame 9 operations, the speed of service is very fast during down stroke; Simultaneously, the operating rate of upper and lower stroke is than being by the eccentricity decision of axle on the eccentric gear 7,8, i.e. its axle center and the ratio of reference circle longest distance with beeline are the ratio of the upper and lower stroke speed of speed change oil pumper.
Claims (1)
1, a kind of speed change oil pumper, comprise oil pumping frame and the transmission mechanism of being made up of power shaft in motor, belt pulley, the gearbox and travelling gear etc., it is characterized in that: output also is equipped with by the axle eccentric gear that constitutes of the conventional gear in its center of circle not in gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282740 CN2583358Y (en) | 2002-11-01 | 2002-11-01 | Variable-speed well pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282740 CN2583358Y (en) | 2002-11-01 | 2002-11-01 | Variable-speed well pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2583358Y true CN2583358Y (en) | 2003-10-29 |
Family
ID=33744760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02282740 Expired - Lifetime CN2583358Y (en) | 2002-11-01 | 2002-11-01 | Variable-speed well pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2583358Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032053A (en) * | 2012-12-19 | 2013-04-10 | 西安石油大学 | Short stroke eccentric gear type pumping unit |
| CN104121338A (en) * | 2014-03-14 | 2014-10-29 | 董剑 | Switching reciprocating incomplete non-circular gear speed changing box and transmitting mechanism thereof |
-
2002
- 2002-11-01 CN CN 02282740 patent/CN2583358Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032053A (en) * | 2012-12-19 | 2013-04-10 | 西安石油大学 | Short stroke eccentric gear type pumping unit |
| CN104121338A (en) * | 2014-03-14 | 2014-10-29 | 董剑 | Switching reciprocating incomplete non-circular gear speed changing box and transmitting mechanism thereof |
| CN104121338B (en) * | 2014-03-14 | 2018-04-10 | 董剑 | One kind switching reciprocal imperfect non-circular gear transmission and its transmission mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121101 Granted publication date: 20031029 |