CN201407153Y

CN201407153Y - Multi-cylinder combined full balance hydraulic pumping unit

Info

Publication number: CN201407153Y
Application number: CN2009203004051U
Authority: CN
Inventors: 徐洪德; 王新愚
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-23
Filing date: 2009-01-23
Publication date: 2010-02-17
Anticipated expiration: 2019-01-23

Abstract

A multi-cylinder combined full balance hydraulic pumping unit comprises no less than two hydraulic cylinders, wherein, the bottom of each hydraulic cylinder is fixedly installed on the base of a drawing frame; a drawing fall block is respectively installed at the top of each piston rod; no less than three rope grooves are formed on each drawing fall block; upward dragropes are positioned in the same drawing plane; and downward dragropes are positioned in the same drawing plane. The multi-cylinder combined full balance hydraulic pumping unit has the advantages of reasonable and compact structure, good integral balance for drawing and oil pumping, long service life, convenient use, good installability, low energy consumption, low maintenance cost, and the like; the integral stress is even; preferentially, the upward dragropes and the downward dragropes adopt a multi-strand manner so as to improve the flexibility of the dragropes and reduce the stress of each dragrope at the same time, sothat the service life of the dragropes can be prolonged and the system reliability can be improved; the requirements for multiple times of speed increase and long stroke can also be realized further,and the high speed motion of a piston can be avoided further, so that the motion speed of the piston can reach an ideal state; and the service life of a hydraulic device can be prolonged.

Description

Multi-cylinder combined type full-balanced hydraulic oil pumping unit

One, technical field

The utility model relates to the pumping unit technical field of recover petroleum, is a kind of multi-cylinder combined type full-balanced hydraulic oil pumping unit.

Two, background technique

Existing pumping unit generally comprises beam pumping unit and hydraulic oil pumping unit etc., and beam pumping unit is more traditional pumping unit, but have following problem: structure is huger, weight ratio is bigger always, adjusts stroke, jig frequency and balance and all compares difficulty, and particularly energy consumption is higher; Hydraulic oil pumping unit is the new pumping unit that occurs in recent ten years, but short because of complex structure, working life, be not easy to use, maintenance cost is high never is widely used.

Three, summary of the invention

The utility model provides a kind of multi-cylinder combined type full-balanced hydraulic oil pumping unit, overcome the deficiency of above-mentioned prior art, solved prior art complex structure, working life short, be not easy to problems such as uses, maintenance cost height, it has reasonable and compact in structure, traction and oil pumping and all has good whole balance, long service life, easy to use, advantage such as installation property is good, energy consumption is low, maintenance cost is low.

The technical solution of the utility model realizes by following measure: a kind of multi-cylinder combined type full-balanced hydraulic oil pumping unit, it comprises hydraulic pressure installation, this hydraulic pressure installation comprises oil hydraulic cylinder and oil hydraulic pump, oil hydraulic cylinder is connected with oil hydraulic pump by hydraulic pipe line, oil hydraulic cylinder comprises cylinder body, piston column and piston, this oil hydraulic cylinder adopts two-way hydraulic cylinder, it is characterized in that tandem-driving bogie is positioned at frame, the top of the frame above tandem-driving bogie is equipped with the oil pumping static pulley, the inner of oil pumping platform is installed in the upper outside of frame, outside at the oil pumping platform is equipped with the oil pumping upper saw pulley, the inner of oil pumping rope is fixedly mounted on the tandem-driving bogie, can fixedly connected with sucker rod by behind oil pumping static pulley and the upper saw pulley of pumping in the outer end of oil pumping rope; The top of the frame of tandem-driving bogie top is equipped with the traction static pulley, one of upper outside of other frame except that the oil pumping platform side is equipped with the traction upper saw pulley, the bottom of the frame of tandem-driving bogie below is equipped with down the traction static pulley, one of outside, bottom of other frame except that the oil pumping platform side is equipped with down the traction upper saw pulley, have and be no less than two oil hydraulic cylinder, the bottom of each oil hydraulic cylinder is fixedly mounted on the base of traction framework, each piston column top is equipped with a traction movable pulley, on the traction movable pulley rope groove that is no less than three is arranged, this rope groove comprises overhanging cable rope groove and following drag rope groove; Be equipped with on the top of the traction plane above the tandem-driving bogie and draw static pulley, be equipped with in the upper outside of the traction plane above the tandem-driving bogie and draw upper saw pulley, the bottom of the traction plane below tandem-driving bogie is equipped with traction static pulley down, and the outside, bottom of the traction plane below tandem-driving bogie is equipped with traction upper saw pulley down; The inner of overhanging cable rope is fixedly mounted on the tandem-driving bogie, the outer end of overhanging cable rope is by last traction static pulley, last traction upper saw pulley, the overhanging cable rope groove of traction movable pulley, be fixedly mounted on behind the static pulley on the framework on traction the putting on the shelf of framework, the inner of following drag rope is fixedly mounted on the tandem-driving bogie, traction static pulley is down passed through in the outer end of following drag rope, under draw upper saw pulley, the following drag rope groove of traction movable pulley, be fixedly mounted on behind the static pulley under the framework on the undercarriage of traction framework, by the traction movable pulley on piston column top, the overhanging cable rope, following drag rope can make tandem-driving bogie along moving up and down in the frame; Overhanging cable rope groove is symmetrically distributed with following drag rope groove, and overhanging cable rope and following drag rope make traction movable pulley symmetry stressed; The overhanging cable rope moves on a traction plane, and following drag rope moves on a traction plane.

Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:

Above-mentioned hydraulic pressure installation can adopt multi-level piston two-way hydraulic cylinder, the cylinder body of this multi-level piston two-way hydraulic cylinder comprises stationary housing and is no less than the active cylinder block of one-level, piston is all arranged in every grade of cylinder body, the below of each piston is last an actor's rendering of an operatic tune, the top of each piston is reverse chamber, and the piston in the lower end of piston column and the final stage active cylinder block is fixed together or becomes one; Piston in the lower end of final stage active cylinder block and its next stage active cylinder block be fixed together or become one and have on this piston up oil circuit hole will go up lower cylinder body on an actor's rendering of an operatic tune be communicated with; The reverse oil paths is arranged on active cylinder block, and the top import and export of this reverse oil paths communicate with the top, reverse chamber in the active cylinder block, and the bottom import and export of this reverse oil paths communicate with the bottom, reverse chamber outside the active cylinder block; In the connection of the bottom of stationary housing an actor's rendering of an operatic tune connection on the up oil circuit Guan Bingyu is arranged, connecting on the top of stationary housing has the reverse chamber of reverse oil circuit Guan Bingyu to be communicated with.

The reverse oil paths that is no less than two symmetrical distributions can be arranged on above-mentioned active cylinder block.

The reverse oil paths that four symmetrical distributions can be arranged on above-mentioned active cylinder block.

The inner of above-mentioned oil pumping platform can be hinged on the upper outside of frame, the oil pumping platform can on turn over or side is changeed.

The outside of above-mentioned oil pumping platform can with on turn over or side to change the piston column outer end of oil hydraulic cylinder hinged, on turn over or base that side is changeed oil hydraulic cylinder is hinged on the frame.

The weight of above-mentioned tandem-driving bogie can equal the sucker rod empty-weight.

Above-mentioned hydraulic pressure installation and corresponding rack section thereof can have moist closet, and hydraulic pressure installation is positioned at moist closet.

Above-mentioned overhanging cable rope can be odd number and following drag rope is even numbers, perhaps the overhanging cable rope be odd number and following drag rope be odd number, perhaps the overhanging cable rope be even numbers and following drag rope can be even numbers, perhaps the overhanging cable rope be even numbers and following drag rope be odd number, overhanging cable rope and following drag rope mutual sub-thread compartment of terrain or mutual multiply compartment of terrain are installed in the rope groove that draws on the movable pulley.

Above-mentioned oil pumping rope or/and the overhanging cable rope or/and down drag rope can adopt sub-thread rope or flat rope or sub-thread chain or multiply chain or banded rope, the oil pumping rope is fixed together by rope hanger and sucker rod.

The up oil circuit pipe of above-mentioned each oil hydraulic cylinder can be connected in parallel together, and the reverse oil circuit pipe of each oil hydraulic cylinder is connected in parallel together.

The utlity model has reasonable and compact in structure, traction and oil pumping and all have good whole balance, long service life, easy to use, advantage such as installation property is good, energy consumption is low, maintenance cost is low.The utility model is whole stressed even, and following drag rope and overhanging cable rope preferably adopt multiply, and this is under same loading condition, reduce the diameter of per share rope, improve the pliability of rope, reduce the stressed of every rope simultaneously, improve the working life and the system reliability of rope.The utility model can also further be realized the needs of many multiplication speed and long stroke, can also further avoid the piston high-speed motion, makes piston movement speed reach perfect condition, thereby prolongs the working life of hydraulic pressure installation.

Four, description of drawings

Accompanying drawing 1 is looked the sectional structure schematic representation for the embodiment's 1 of multi-level piston two-way hydraulic cylinder in the utility model master.

Accompanying drawing 2 is that the A-A of accompanying drawing 1 is to sectional structure.Accompanying drawing 3 is that the B-B of accompanying drawing 1 is to sectional structure.

Accompanying drawing 4 is looked the sectional structure schematic representation for the embodiment's 2 of multi-level piston two-way hydraulic cylinder in the utility model master.

Accompanying drawing 5 is that the C-C of accompanying drawing 4 is to sectional structure.Accompanying drawing 6 is that the D-D of accompanying drawing 4 is to sectional structure.

Accompanying drawing 7 is looked the sectional structure schematic representation for embodiment's 3 of the present utility model master.

Accompanying drawing 8 is looked the sectional structure schematic representation for the master of traction movable pulley in the accompanying drawing 7 and 9.

Accompanying drawing 9 is looked the sectional structure schematic representation for embodiment's 4 of the present utility model master.

Coding in the accompanying drawing is respectively: 1 is piston column, and 2 is stationary housing, and 3 is piston, and 4 is last an actor's rendering of an operatic tune, 5 is reverse chamber, and 6 is the final stage active cylinder block, and 7 is up oil circuit hole, and 8 is the reverse oil paths, 9 is up oil circuit pipe, and 10 is reverse oil circuit pipe, and 11 is intermediate active cylinder block; 12 is first oil hydraulic cylinder, and 13 is oil hydraulic pump, and 14 is tandem-driving bogie, and 15 is frame, and 16 are the oil pumping static pulley, and 17 are the oil pumping platform, and 18 are the oil pumping upper saw pulley, and 19 are the oil pumping rope, and 20 be moist closet, 21 on turn over or side commentaries on classics oil hydraulic cylinder, 22 is rope hanger, 23 is soil; 24 is last traction static pulley, and 25 is last traction upper saw pulley, and 26 are following traction static pulley, and 27 are traction upper saw pulley down, and 28 are the traction framework, and 29 is the first traction movable pulley, and 30 be the rope groove, and 31 be the overhanging cable rope, 32 be under drag rope; 33 is second time static pulley of framework, and 34 is second oil hydraulic cylinder, and 35 is the second traction movable pulley, and 36 is static pulley on the framework first, and 37 is first time static pulley of framework; 38 is the 3rd oil hydraulic cylinder, and 39 is the 3rd traction movable pulley, and 40 is static pulley on the framework second.

Five, embodiment

The utility model is not subjected to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

Shown in accompanying

drawing

7 and 8, this multi-cylinder combined type full-balanced hydraulic oil pumping unit comprises hydraulic pressure installation, this hydraulic pressure installation comprises oil hydraulic cylinder and oil hydraulic pump 13, oil hydraulic cylinder is connected with oil hydraulic pump 13 by hydraulic pipe line, oil hydraulic cylinder comprises cylinder body, piston column 1 and piston 3, this oil hydraulic cylinder adopts two-way hydraulic cylinder, tandem-driving bogie 14 is positioned at frame 15, the top of the frame 15 above tandem-driving bogie 14 is equipped with oil pumping static pulley 16, the inner of oil pumping platform 17 is installed in the upper outside of frame 15, in the outside of oil pumping platform 17 oil pumping upper saw pulley 18 is installed, the inner of oil pumping rope 19 is fixedly mounted on the tandem-driving bogie 14, can fixedly connected with sucker rod by behind oil pumping static pulley 16 and the upper saw pulley 18 of pumping in the outer end of oil pumping rope 19; The top of the frame 15 of tandem-driving bogie 14 tops is equipped with traction static pulley 23, one of upper outside of other frame 15 except that oil pumping platform 17 sides is equipped with traction upper saw pulley 25, the bottom of the frame 15 of tandem-driving bogie 14 belows is equipped with down traction static pulley 26, one of outside, bottom of other frame 15 except that oil pumping platform 17 sides is equipped with down traction upper saw pulley 27, have and be no less than two oil hydraulic cylinder, can determine the quantity of oil hydraulic cylinder according to actual needs, the bottom of each oil hydraulic cylinder is fixedly mounted on the base of traction framework 28, each piston column 1 top is equipped with a traction movable pulley, on the traction movable pulley rope groove 30 that is no less than three is arranged, this rope groove 30 comprises overhanging cable rope groove and following drag rope groove; Traction static pulley 24 is installed on the top of the traction plane above the tandem-driving bogie 14, in the upper outside of the traction plane above the tandem-driving bogie 14 traction upper saw pulley 25 is installed, the bottom of the traction plane below tandem-driving bogie 14 is equipped with traction static pulley 26 down, and the outside, bottom of the traction plane below tandem-driving bogie 14 is equipped with traction upper saw pulley 27 down; The inner of overhanging cable rope 31 is fixedly mounted on the tandem-driving bogie 14, the outer end of overhanging cable rope 31 is by last traction static pulley 24, last traction upper saw pulley 25, the overhanging cable rope groove of traction movable pulley, be fixedly mounted on behind the static pulley on the framework on traction the putting on the shelf of framework 28, the inner of following drag rope 32 is fixedly mounted on the tandem-driving bogie 14, traction static pulley 26 is down passed through in the outer end of following drag rope 32, under draw upper saw pulley 27, the following drag rope groove of traction movable pulley, be fixedly mounted on behind the static pulley under the framework on the undercarriage of traction framework 28, by the traction movable pulley on piston column 1 top, overhanging cable rope 31, following drag rope 32 can make tandem-driving bogie 14 along moving up and down in the frame 15; Overhanging cable rope groove is symmetrically distributed with following drag rope groove, and overhanging cable rope 31 and following drag rope 32 make traction movable pulley symmetry stressed; Overhanging cable rope 31 moves on a traction plane, and following drag rope 32 moves on a traction plane, thereby avoids the distortion of drag rope, reduces resistance, has increased the reliability and the working life of drag rope.The utility model is when work: tandem-driving bogie 14 keeps relative equilibrium by oil pumping rope 19 and sucker rod load, therefore, the merit that drop-down tandem-driving bogie 14 is done is mainly used in and promotes fluid column and overcome the needed merit of frictional force that sucker rod moves upward from oil well, on draw tandem-driving bogie 14 to do merit be mainly used in sucker rod and overcome the frictional force that moves downward and oil well pump is resetted, thereby the minimizing idle work has reduced energy consumption.

Embodiment 3: shown in accompanying drawing 7 to 8, be with above-mentioned multi-cylinder combined type full-balanced hydraulic oil pumping unit difference: embodiment 3 oil hydraulic cylinder has two i.e. first oil hydraulic cylinder 12 and second oil hydraulic cylinders 34, the first traction movable pulley 29 is installed on piston column 1 top of first oil hydraulic cylinder 12, the second traction movable pulley 35 is installed on piston column 1 top of second oil hydraulic cylinder 34, on the putting on the shelf of framework 28, static pulley 36 on the framework first is installed, first time static pulley 37 of framework is installed on the undercarriage of framework 28, the outer end of overhanging cable rope 31 is by last traction static pulley 24, last traction upper saw pulley 25, the first traction movable pulley 29, the static pulley 36 and second traction are fixedly mounted on behind the movable pulley 35 on the putting on the shelf of traction framework 28 on the framework first, and the outer end of following drag rope 32 is by traction static pulley 26 down, under draw upper saw pulley 27, the first traction movable pulley 29, be fixedly mounted on the undercarriage of traction framework 28 behind the first time static pulley 37 of framework and the second traction movable pulley 35.

Embodiment 4: shown in accompanying drawing 7 to 9, be with embodiment 3 difference: embodiment 4 oil hydraulic cylinder has three i.e. first oil hydraulic cylinders 12, second oil hydraulic cylinder 34 and the 3rd oil hydraulic cylinder 38, corresponding the 3rd traction movable pulley 39 that increased, second time static pulley 33 of static pulley 40 and framework on the framework second, the outer end of overhanging cable rope 31 is by last traction static pulley 24, last traction upper saw pulley 25, the first traction movable pulley 29, static pulley 36 on the framework first, the second traction movable pulley 35, static pulley 40 and the 3rd traction are fixedly mounted on behind the movable pulley 39 on the putting on the shelf of traction framework 28 on the framework second, and the outer end of following drag rope 32 is by traction static pulley 26 down, under draw upper saw pulley 27, the first traction movable pulley 29, first time static pulley 37 of framework, the second traction movable pulley 35, be fixedly mounted on the undercarriage of traction framework 28 behind second time static pulley 33 of framework and the 3rd traction movable pulley 39.

Can according to actual needs above-mentioned multi-cylinder combined type full-balanced hydraulic oil pumping unit be made further optimization and/or improvements:

Shown in accompanying

drawing

7 and 8, the inner of oil pumping platform 17 is hinged on the upper outside of frame 15, oil pumping platform 17 can on turn over or side is changeed, thereby allow the oil well mouth be convenient to revise well operations, preferably realize (but also can by manually realizing) by hydraulic pressure, the outside of oil pumping platform 17 with on turn over or side to change the piston column outer end of oil hydraulic cylinder 21 hinged, on turn over or the base of side commentaries on classics oil hydraulic cylinder 21 is hinged on the frame 15.

In order to help the proper functioning of hydraulic pressure installation, above-mentioned hydraulic pressure installation and corresponding frame 15 parts thereof preferably have moist closet 20, hydraulic pressure installation is positioned at moist closet 20, the base of frame 15 can rest on the ground, preferably the moist closet 20 of embodiment 4 hydraulic pressure installation and corresponding frame 15 parts thereof is placed the relative thermostat layer of below ground, become underground cell-type in use, make the hydraulic pressure installation working environment be in metastable state like this, help reducing the fault of hydraulic pressure installation, thereby prolonged the working life of hydraulic pressure installation, reduced maintenance cost, reduced the height of derrick, improved stability and reduce installation difficulty.Be specially adapted to summer than sweltering heat or/and winter than the petroleum production of cold area.

In order to help drawing the symmetrical stressed of movable pulley, as shown in Figure 8, overhanging cable rope 31 can be odd number and following drag rope 32 can be even numbers, perhaps overhanging cable rope 31 can be odd number and following drag rope 32 can be odd number, perhaps overhanging cable rope 31 can be even numbers and following drag rope 32 can be even numbers, perhaps overhanging cable rope 31 can be even numbers and following drag rope 32 can be odd number, overhanging cable rope 31 and following drag rope 32 mutual sub-thread compartment of terrains or mutual multiply compartment of terrain be installed in the rope groove 30 that draws on the movable pulley.Make the utility model whole stressed even like this, following drag rope 32 and overhanging cable rope 31 preferably adopt multiply, this is under same loading condition, reduce the diameter of per share rope, improve the pliability of rope, reduce the stressed of every rope simultaneously, thereby also improve the working life and the system reliability of rope.

Shown in accompanying

drawing

7 and 8, oil pumping rope 19 can adopt sub-thread rope or flat rope or sub-thread chain or multiply chain or banded rope, can determine according to actual needs, and oil pumping rope 19 is fixed together by rope hanger 22 and sucker rod.

Hydraulic pressure installation can adopt single stage piston two-way hydraulic cylinder or multi-level piston two-way hydraulic cylinder, can come as required to determine, shown in accompanying drawing 1 to 8, hydraulic pressure installation can adopt multi-level piston two-way hydraulic cylinder, shown in accompanying drawing 1 to 6, this multi-level piston two-way hydraulic cylinder comprises cylinder body, piston column 1 and piston 3, cylinder body comprises stationary housing 2 and is no less than the active cylinder block of one-level, piston 3 is all arranged in every grade of cylinder body, the below of each piston 3 is last an actor's rendering of an operatic tune 4, the top of each piston 3 is reverse chamber 5, and the piston 3 in the lower end of piston column 1 and the final stage active cylinder block 6 is fixed together or becomes one; Piston 3 in the lower end of final stage active cylinder block 6 and its next stage active cylinder block be fixed together or become one and have on this piston 3 up oil circuit hole 7 will go up lower cylinder body on an actor's rendering of an operatic tune 4 be communicated with; Reverse oil paths 8 is arranged on active cylinder block, and the top import and export of this reverse oil paths 8 communicate with 5 tops, reverse chamber in the active cylinder block, and the bottom import and export of this reverse oil paths 8 communicate with 5 bottoms, reverse chamber outside the active cylinder block; Connecting in the bottom of stationary housing 2 has up oil circuit pipe 9 and is communicated with last an actor's rendering of an operatic tune 4, reverse oil circuit pipe 10 is arranged and is communicated with reverse chamber 5 in the connection of the top of stationary housing 2.

Embodiment 1: shown in accompanying drawing 1 to 3, be with above-mentioned multi-level piston two-way hydraulic cylinder difference: embodiment 1 cylinder body comprises stationary housing 2 and active cylinder block, having only the one-level active cylinder block is final stage active cylinder block 6, and the lower end of final stage active cylinder block 6 and its next stage active cylinder block to be piston 3 in the stationary housing 2 be fixed together or become one and have on this piston 3 up oil circuit hole 7 will go up lower cylinder body on an actor's rendering of an operatic tune 4 be communicated with.Its working procedure is as follows: when needs piston column 1 is up, upwards inject high pressure liquid in an actor's rendering of an operatic tune 4 by up lubricating oil road pipe 9, and oppositely oil circuit pipe 10 is in to effluxing the high pressure liquid state that unloads, thereby makes piston 3 in the stationary housing 2 and the pistons 3 in the final stage active cylinder block 6 all make progress operation and drive piston column 1 stretches out; When needs piston column 1 reverse when descending, in reverse chamber 5, inject high pressure liquid by reverse oil circuit pipe 10, and up lubricating oil road pipe 9 is in to effluxing the high pressure liquid state that unloads, thereby makes all inverted runnings and drive piston column 1 and shrink downwards of piston 3 in the stationary housing 2 and the piston 3 in the final stage active cylinder block 6.

Embodiment 2: shown in accompanying drawing 1 to 6, be with embodiment 1 difference: shown in accompanying drawing 4 to 6, embodiment 2 cylinder body comprises stationary housing 2 and secondary active cylinder block, and this secondary active cylinder block comprises intermediate active cylinder block 11 and final stage active cylinder block 6; The lower end of final stage active cylinder block 6 and its next stage active cylinder block be the piston 3 in the intermediate active cylinder block 11 be fixed together or become one and have on this piston 3 up oil circuit hole 7 will go up lower cylinder body on an actor's rendering of an operatic tune 4 be communicated with; Lower end and its next stage active cylinder block of middle rank active cylinder block 11 be stationary housing 2 interior pistons 3 be fixed together or become one and have on this piston 3 up oil circuit hole 7 will go up lower cylinder body on an actor's rendering of an operatic tune 4 be communicated with.Its working procedure is as follows: when needs piston column 1 is up, upwards inject high pressure liquid in an actor's rendering of an operatic tune 4 by up lubricating oil road pipe 9, and oppositely oil circuit pipe 10 is in to effluxing the high pressure liquid state that unloads, thereby makes piston 3 in the piston 3 in the stationary housing 2, the intermediate active cylinder block 11 and the pistons 3 in the final stage active cylinder block 6 all make progress operation and drive piston column 1 stretches out; When needs piston column 1 reverse when descending, in reverse chamber 5, inject high pressure liquid by reverse oil circuit pipe 10, and up lubricating oil road pipe 9 is in to effluxing the high pressure liquid state that unloads, thereby makes all inverted runnings and drive piston column 1 and shrink downwards of piston 3 in the piston 3 in the stationary housing 2, the intermediate active cylinder block 11 and the piston 3 in the final stage active cylinder block 6.

Can according to actual needs above-mentioned multi-level piston two-way hydraulic cylinder be made further optimization and/or improvements:

The reverse oil paths 8 that is no less than two symmetrical distributions can be arranged on above-mentioned active cylinder block, shown in accompanying drawing 1 to 6, the reverse oil paths 8 of four symmetrical distributions is arranged preferably on active cylinder block.

Shown in accompanying drawing 7 and 9, the up oil circuit pipe of each oil hydraulic cylinder is connected in parallel together, and the reverse oil circuit pipe of each oil hydraulic cylinder is connected in parallel together, is convenient to control each hydraulic cylinder synchronous operation.

In the utility model: that the piston control device for reversing of hydraulic pressure installation can adopt the mechanical trip switch type or electronic control type etc. existing technique known.

In the utility model: the progression of active cylinder block is many more, and the distance of stretching out or shrinking of piston column 1 is restricted just few more, and the speed of stretching out or shrinking of piston column 1 is just fast more.

Above technical characteristics has constituted embodiment of the present utility model, and it has stronger adaptability and preferable implementation result, can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.

Claims

1, a kind of multi-cylinder combined type full-balanced hydraulic oil pumping unit, comprise hydraulic pressure installation, this hydraulic pressure installation comprises oil hydraulic cylinder and oil hydraulic pump, oil hydraulic cylinder is connected with oil hydraulic pump by hydraulic pipe line, oil hydraulic cylinder comprises cylinder body, piston column and piston, this oil hydraulic cylinder adopts two-way hydraulic cylinder, it is characterized in that tandem-driving bogie is positioned at frame, the top of the frame above tandem-driving bogie is equipped with the oil pumping static pulley, the inner of oil pumping platform is installed in the upper outside of frame, outside at the oil pumping platform is equipped with the oil pumping upper saw pulley, and the inner of oil pumping rope is fixedly mounted on the tandem-driving bogie, can fixedly connected with sucker rod by behind oil pumping static pulley and the upper saw pulley of pumping in the outer end of oil pumping rope; The top of the frame of tandem-driving bogie top is equipped with the traction static pulley, one of upper outside of other frame except that the oil pumping platform side is equipped with the traction upper saw pulley, the bottom of the frame of tandem-driving bogie below is equipped with down the traction static pulley, one of outside, bottom of other frame except that the oil pumping platform side is equipped with down the traction upper saw pulley, have and be no less than two oil hydraulic cylinder, the bottom of each oil hydraulic cylinder is fixedly mounted on the base of traction framework, each piston column top is equipped with a traction movable pulley, on the traction movable pulley rope groove that is no less than three is arranged, this rope groove comprises overhanging cable rope groove and following drag rope groove; Be equipped with on the top of the traction plane above the tandem-driving bogie and draw static pulley, be equipped with in the upper outside of the traction plane above the tandem-driving bogie and draw upper saw pulley, the bottom of the traction plane below tandem-driving bogie is equipped with traction static pulley down, and the outside, bottom of the traction plane below tandem-driving bogie is equipped with traction upper saw pulley down; The inner of overhanging cable rope is fixedly mounted on the tandem-driving bogie, the outer end of overhanging cable rope is by last traction static pulley, last traction upper saw pulley, the overhanging cable rope groove of traction movable pulley, be fixedly mounted on behind the static pulley on the framework on traction the putting on the shelf of framework, the inner of following drag rope is fixedly mounted on the tandem-driving bogie, traction static pulley is down passed through in the outer end of following drag rope, under draw upper saw pulley, the following drag rope groove of traction movable pulley, be fixedly mounted on behind the static pulley under the framework on the undercarriage of traction framework, by the traction movable pulley on piston column top, the overhanging cable rope, following drag rope can make tandem-driving bogie along moving up and down in the frame; Overhanging cable rope groove is symmetrically distributed with following drag rope groove, and overhanging cable rope and following drag rope make traction movable pulley symmetry stressed; The overhanging cable rope moves on a traction plane, and following drag rope moves on a traction plane.

2, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 1, it is characterized in that hydraulic pressure installation adopts multi-level piston two-way hydraulic cylinder, the cylinder body of this multi-level piston two-way hydraulic cylinder comprises stationary housing and is no less than the active cylinder block of one-level, piston is all arranged in every grade of cylinder body, the below of each piston is last an actor's rendering of an operatic tune, the top of each piston is reverse chamber, and the piston in the lower end of piston column and the final stage active cylinder block is fixed together or becomes one; Piston in the lower end of final stage active cylinder block and its next stage active cylinder block be fixed together or become one and have on this piston up oil circuit hole will go up lower cylinder body on an actor's rendering of an operatic tune be communicated with; The reverse oil paths is arranged on active cylinder block, and the top import and export of this reverse oil paths communicate with the top, reverse chamber in the active cylinder block, and the bottom import and export of this reverse oil paths communicate with the bottom, reverse chamber outside the active cylinder block; In the connection of the bottom of stationary housing an actor's rendering of an operatic tune connection on the up oil circuit Guan Bingyu is arranged, connecting on the top of stationary housing has the reverse chamber of reverse oil circuit Guan Bingyu to be communicated with.

3, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 2 is characterized in that having on the active cylinder block reverse oil paths that is no less than two symmetrical distributions.

4, according to claim 1 or 2 or 3 described multi-cylinder combined type full-balanced hydraulic oil pumping units, the inner of the platform that it is characterized in that pumping is hinged on the upper outside of frame, the oil pumping platform can on turn over or side is changeed.

5, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 4, the outside of the platform that it is characterized in that pumping and on turn over or side to change the piston column outer end of oil hydraulic cylinder hinged, on turn over or base that side is changeed oil hydraulic cylinder is hinged on the frame.

6, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 5 is characterized in that hydraulic pressure installation and corresponding rack section thereof have moist closet, and hydraulic pressure installation is positioned at moist closet.

7, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 6, it is characterized in that the overhanging cable rope be odd number and following drag rope be even numbers, perhaps the overhanging cable rope be odd number and following drag rope be odd number, perhaps the overhanging cable rope be even numbers and following drag rope can be even numbers, perhaps the overhanging cable rope be even numbers and following drag rope be odd number, overhanging cable rope and following drag rope mutual sub-thread compartment of terrain or mutual multiply compartment of terrain are installed in the rope groove that draws on the movable pulley.

8, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 7 is characterized in that the weight of tandem-driving bogie equals the sucker rod empty-weight.

9, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 8, it is characterized in that pumping rope or/and the overhanging cable rope or/and down drag rope adopt sub-thread rope or flat rope or sub-thread chain or multiply chain or banded rope, the oil pumping rope is fixed together by rope hanger and sucker rod.

10, multi-cylinder combined type full-balanced hydraulic oil pumping unit according to claim 9 is characterized in that the up oil circuit pipe of each oil hydraulic cylinder is connected in parallel together, and the reverse oil circuit pipe of each oil hydraulic cylinder is connected in parallel together.