CN102704897A - Gravitational equilibrium hydraulic pressure long stroke pumping unit - Google Patents
Gravitational equilibrium hydraulic pressure long stroke pumping unit Download PDFInfo
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- CN102704897A CN102704897A CN2012102084290A CN201210208429A CN102704897A CN 102704897 A CN102704897 A CN 102704897A CN 2012102084290 A CN2012102084290 A CN 2012102084290A CN 201210208429 A CN201210208429 A CN 201210208429A CN 102704897 A CN102704897 A CN 102704897A
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Abstract
The invention discloses a gravitational equilibrium hydraulic pressure long stroke pumping unit, which includes a base, a rack, a three-way support, a weight box, fixed pulleys, movable pulleys, a beam hanger, a sucker rod side oil cylinder, a weight box side oil cylinder, oil cylinder leakage oil recovery retractable mechanisms and a hydraulic pressure station, and is characterized in that the sucker rod side oil cylinder and the weight box side oil cylinder are clearance oil cylinders; each clearance oil cylinder includes an oil cylinder piston, an oil cylinder oil inlet passage, a cylinder barrel and a cylinder cap body; the cylinder cap body is fixed on the outer side at the upper part of each cylinder barrel; a cylinder cap casing is sleeved at the outer part of each cylinder cap body; a cylinder cap cover is fixed at the upper part of each cylinder cap casing; a dust scraping ring is arranged above the outer part of each cylinder cap cover; and the oil cylinder leakage oil recovery retractable mechanism is connected onto a drainage port in each cylinder cap casing. The gravitational equilibrium hydraulic pressure long stroke pumping unit has the advantages of low possibility of depletion, no oil leakage, resource saving, simplicity and convenience for maintenance, high safety factor, long service life and high working efficiency.
Description
Technical field
The present invention relates to a kind of gravitational equilibrium hydraulic long stroke well pumping unit, belong to the oil exploration equipment field.
Background technology
Oil pumper is a kind of machinery equipment of recover petroleum, is commonly called as " machine of kowtowing ", makes oil go out well through the way of pressurizeing.At present, the oil field generally uses " three take out " (oil well pump, sucker rod, oil pumper) mode to carry out oil producing operation, and mostly used oil pumper is beam pumping unit (machine of kowtowing).
Existing hydraulic pumping unit cylinder structure, working long hours is prone to produce wearing and tearing between back piston and the cylinder barrel, and reducing oil cylinder has also influenced operating efficiency in the time of application life.In addition, existing cylinder structure bears the alternation high pressure because of its oil sealing, and sealing performance is bad, and the oil sealing easy ageing is damaged, and hydraulic oil often occurs and from the slit, overflows, and causes pressure release also to cause the wasting of resources.Existing hydraulic pumping unit generally all exists above-mentioned some shortcomings.
The leakage of oil cylinder original structure oil interface, employing be sebific duct, in running, sebific duct receives temperature, bending, aging influence, application life is short, damaged easily.
The oil pumper of existing hydraulic drive control structure; Can not satisfy the motion wearing and tearing of the annual ten million meter level stroke of oil pumper because of its hydraulic cylinder sealing structure; Control system complex simultaneously, the working service technical requirements is too high, all can not satisfy the production and the energy-conservation demand of applying unit.
When gravity counter weight type oil pumper keeps in repair, want earlier off-load, need fall to ground or on earth to ballast box or oil cylinder.Maintenance returns to original position to ballast box or oil cylinder when finishing again, hangs up load.But the weight of ballast box or oil cylinder is very heavy, has brought very big difficulty to returning to original position work, has expended a lot of repair times.
Most many group high-strength bolts, the flanges of adopting of well mechanism intermediate cam frame that let of existing no beam pumping unit are fixed; If device fails must be come place under repair through backing out nut one by one so, if when being positioned at work high above the ground; So not only make maintenance difficult, and cause danger easily.
Existing oil pumper, more loaded down with trivial details in the taking-up process of carrying out sensor, and also also relatively more painstaking in loosening wire rope, brought very big difficulty to the workman, seriously reduced operating efficiency.
Therefore, be badly in need of a kind of improved technology and solve existing these a series of problems in the prior art.
Summary of the invention
The purpose of this invention is to provide a kind of novel gravitational equilibrium hydraulic long stroke well pumping unit, its complete machine convenience in light weight, easy to maintenance, do not turn over machine, do not pound well, safety factor is high, long service life, high efficiency.
The present invention is that the technical scheme that addresses the above problem employing is:
The gravitational equilibrium hydraulic long stroke well pumping unit; Comprise that base, frame, tripod, ballast box, fixed pulley, movable pulley, polished rod eye, sucker rod side cylinder, ballast box side cylinder, oil cylinder leak oil and reclaim telescoping mechanism and Hydraulic Station; Said Hydraulic Station places on the ground of frame one side; Tripod is fixed in the frame top both sides; Be fixed with six groups of fixed pulleys on the tripod, ballast box respectively with tripod on fixed pulley group, the running block that is separately fixed at sucker rod side cylinder and ballast box side cylinder bottom, the lanyard wheel of frame both sides be connected through wire rope with polished rod eye; Said oil cylinder leaks oil recovery telescoping mechanism and comprises movable pulley guide rod and outer bar holder, and said movable pulley guide rod is externally connected with outer bar holder, and said outer bar holder is provided with outer bar hold-down nut; Be fixed with polished rod on the said polished rod eye; Both sides, said polished rod eye center are equipped with a plurality of maos of plait decks, and each mao plait deck top all is connected with wire rope, and hair plait deck center is provided with the sensor that is inlaid on the polished rod; Said sensor top is provided with the polished rod clamp a that is fixed on the polished rod
Said sucker rod side cylinder and ballast box side cylinder are the clearance-type oil cylinder; Each clearance-type oil cylinder includes oil cylinder piston, piston rod, oil cylinder oil inlet passage, cylinder barrel and cylinder cap body, and said cylinder barrel is flush-mounted in the outside of oil cylinder piston, leaves the gap between said oil cylinder piston and the cylinder barrel; The upper outside of said cylinder barrel is fixed with cylinder cap body; The upper inner of cylinder cap body is provided with support ring, and the top of said support ring and cylinder cap body is installed with joint ring, leaves the gap between the cylinder cap body of support ring bottom and the piston rod; The bottom of said cylinder barrel is fixedly connected with oil cylinder cylinder bottom cap; The outer cover of said cylinder cap body is provided with cylinder cap shell, and the top of said cylinder cap shell is fixed with the cylinder cap, and the outside top of said cylinder cap is provided with dust scraping ring; Be equipped with drain tap on said cylinder cap body and the cylinder cap shell, form the draining chamber between said cylinder cap body and the cylinder cap shell;
Be connected with oil cylinder on the drain tap on the cylinder cap shell and leak oil recovery telescoping mechanism; Said oil cylinder leaks oil recovery telescoping mechanism and also comprises flexible interior bar, extension bar seat, oil-scraping ring and extension bar nut; Be provided with flexible outer bar in said outer bar hold-down nut, outer bar holder and the movable pulley guide rod, be socketed with flexible interior bar in the said flexible outer bar, bar is socketed with the extension bar seat outward in said the stretching; The upper end of flexible outer bar is fixed in the lower end socket of said extension bar seat; The upper end of said extension bar seat is fixed on the flexible interior bar by the extension bar hold-down nut, and the top of said flexible interior bar is communicated with the oil cylinder drain tap, is provided with shoe cream room, oil-scraping ring and following shoe cream room in the inner dead slot of said extension bar seat; Be provided with oil collect port in the said extension bar hold-down nut; Said oil collect port is communicated with last shoe cream room by draining passage II, and said shoe cream room and the following shoe cream room gone up be by the last draining channel connection in the oil-scraping ring, said under the shoe cream room lower end pass through under the draining passage be communicated with flexible outer bar.
Be embedded with many flexible seal rings between said joint ring and the piston rod.
The top of said dust scraping ring is provided with the dust scraping ring oil collect port, and said dust scraping ring oil collect port is connected with draining passage I.
The hydraulic circuit of Hydraulic Station is a hydraulic system, and said hydraulic system comprises the plunger displacement pump that is connected with fuel tank, drives the motor of plunger displacement pump work; Be arranged on one way valve, pressure meter and the pressure meter switch of plunger displacement pump oil-out; Forced air cooler, electric heater, liquid level liquid thermometer; Liquid-level switch and safety valve; Said one way valve is connected with strainer, is provided with electromagnetic relief valve between said one way valve and the strainer, and the oil-out of said strainer is connected with the 3-position 4-way electro-hydraulic reversing valve with accumulator; Two high pressure oil-outs of said 3-position 4-way electro-hydraulic reversing valve are connected with the counterweight side cylinder with the sucker rod side cylinder respectively through high-pressure ball valve, and said 3-position 4-way electro-hydraulic reversing valve drain tap also is connected with counterbalance valve, pressure meter and pressure meter switch.
Said 3-position 4-way electro-hydraulic reversing valve also is connected with safety valve, and this oil pumper hydraulic system also comprises the subsequent use plunger displacement pump that is connected with fuel tank, and said subsequent use plunger displacement pump is connected with spare motor.
Be fixed with wire rope on the crossbeam of frame and clamp mechanism, wire rope clamps mechanism and comprises fastening body, and crossbeam is provided with four fastening bodies, when needs carry out wire rope clamping action, outside each fastening body, is provided with the holddown plate that compresses through hold-down bolt; Holddown plate quantity is 1-20.
Be connected through the hinge between said tripod and the frame, be set with pin in the said hinge.
Said polished rod is provided with steel rope replacing mechanism; Said steel rope replacing mechanism comprises jackscrew and polished rod clamp b; Said jackscrew is fixed in the polished rod optional position and moves up and down with polished rod during normal oil pumping; Jackscrew places on the well head when needing to change the wire rope on the polished rod eye, and polished rod clamp a is fixed on the polished rod on jackscrew top.
Said polished rod eye bottom is provided with replacing sensor mechanism; Said replacing sensor mechanism comprises polished rod clamp c, is flush-mounted in relieving slab a and relieving slab b on the polished rod; Said relieving slab a is fixed in the polished rod eye bottom, and said relieving slab b is connected with relieving slab a through the off-load bolt, is provided with the polished rod clamp c that is fixed on the polished rod in the space between said relieving slab a and the relieving slab b; Said polished rod clamp c is close to relieving slab b, leaves bigger space between polished rod clamp c and the relieving slab a.
Advantage of the present invention is: rational in infrastructure, long service life, to control highly sensitively, and automaticity is high, helps economizing on resources and increasing work efficiency.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a cylinder structure sketch map of the present invention.
Fig. 3 is the local enlarged diagram at A place among Fig. 2 of the present invention.
Fig. 4 is the structural representation of oil cylinder oil return stretching structure of the present invention.
Fig. 5 is the local enlarged diagram at B place among Fig. 4 of the present invention.
Fig. 6 is the fundamental diagram of hydraulic system of the present invention.
Fig. 7 is the structural representation of rope cramp locking structure of the present invention.
Fig. 8 is the structural representation of tripod of the present invention.
Fig. 9 is the structural representation of the embodiment of the invention 1 steel rope replacing structure.
Figure 10 is the structural representation of the embodiment of the invention 2 replacing sensor structures.
Wherein: 1, frame, 2, base, 3, wire rope clamps mechanism, 4, relieving slab b, 5, the sucker rod side cylinder, 6, oil cylinder leaks oil and reclaim telescoping mechanism, 7, the off-load bolt, 8, Hydraulic Station; 9, fixed pulley, 10, the ballast box side cylinder, 11, movable pulley, 12, tripod, 13, polished rod clamp c, 14, wire rope, 15, holddown plate, 16, ballast box; 17, oil collect port, 18, lanyard wheel, 19, the high pressure oil-out, 20, piston rod, 21, drain tap, 22, the oil cylinder oil inlet passage, 23, cylinder barrel, 24, the gap; 25, cylinder cap body, 26, support ring, 27, joint ring, 28, oil cylinder cylinder bottom cap, 29, cylinder cap shell, 30, the cylinder cap, 31, dust scraping ring; 32, drain tap, 33, the draining chamber, 34, sealing ring, 35, the oil cylinder drain tap, 36, flexible in bar, 37, flexible outer bar, 38, the movable pulley guide rod; 39, outer bar hold-down nut, 40, outer bar holder, 41, oil-scraping ring, 42, go up the draining passage, 43, go up shoe cream room, 44, relieving slab a, 45, shoe cream room down; 46, following draining passage, 47, the extension bar seat, 48, the extension bar nut, 49, draining passage II, 50, fuel tank, 51, plunger displacement pump, 52, motor; 53, one way valve, 54, pressure meter, 55, pressure meter switch, 56, forced air cooler, 57, electric heater, 58, the liquid level liquid thermometer, 59, liquid-level switch; 60, safety valve, 61, strainer, 62, electromagnetic relief valve, 63, accumulator, 64, the 3-position 4-way electro-hydraulic reversing valve, 65, high-pressure ball valve, 66, the dust scraping ring oil collect port; 67, draining passage I, 68, counterbalance valve, 69, subsequent use plunger displacement pump, 70, spare motor, 71, sensor, 72, polished rod clamp a, 73; Polished rod clamp b, 74, polished rod eye, 75, hold-down bolt, 76, polished rod, 77, jackscrew, 78, well head, 79, hair plait deck; 80, fastening body, 81, crossbeam, 82, hinge, 83, pin, 84, oil cylinder piston, 85, nut, 86, double threaded screw.
The specific embodiment
Shown in Fig. 1 to 9; Gravitational equilibrium hydraulic long stroke well pumping unit of the present invention; Comprise that base 2, frame 1, tripod 12, ballast box 16, fixed pulley 9, movable pulley 11, polished rod eye 74, sucker rod side cylinder 5, ballast box side cylinder 10, oil cylinder leak oil and reclaim telescoping mechanism 6 and Hydraulic Station 8; Hydraulic Station 8 places on the ground of frame 1 one sides; Tripod 12 is fixed in both sides, frame 1 top; Be fixed with six groups of fixed pulleys 9 on the tripod 12, ballast box 16 respectively with tripod 12 on the lanyard wheel 18 of fixed pulley group, the movable pulley 11 that is separately fixed at sucker rod side cylinder 5 and ballast box side cylinder 10 bottoms, frame 1 both sides be connected through wire rope 14 with polished rod eye 74; Oil cylinder leaks oil recovery telescoping mechanism 6 and comprises movable pulley guide rod 38 and outer bar holder 40, and movable pulley guide rod 38 is externally connected with outer bar holder 40, and outer bar holder 40 is provided with outer bar hold-down nut 39; Be fixed with polished rod 76 on the polished rod eye 74; Both sides, polished rod eye 74 center are equipped with a plurality of maos of plait decks 79; Each mao plait deck 79 tops all are connected with wire rope 14; Hair plait deck 79 centers are provided with the sensor 71 that is inlaid on the polished rod 76, and sensor 71 is provided with the polished rod clamp a72 that is fixed on the polished rod 76.
Sucker rod side cylinder 5 is the clearance-type oil cylinder with ballast box side cylinder 10, and each clearance-type oil cylinder includes oil cylinder piston 84, piston rod 20, oil cylinder oil inlet passage 22, cylinder barrel 23 and cylinder cap body 25, and cylinder barrel 23 is flush-mounted in the outside of oil cylinder piston 84; Leave gap 24 between oil cylinder piston 84 and the cylinder barrel 23, the upper outside of cylinder barrel 23 is fixed with cylinder cap body 25, and the upper inner of cylinder cap body 25 is provided with support ring 26; The top of support ring 26 and cylinder cap body 25 is installed with joint ring 27, leaves the gap between the cylinder cap body 25 of support ring 26 bottoms and the piston rod 20, and the bottom of cylinder barrel 23 is fixedly connected with oil cylinder cylinder bottom cap 28; The outer cover of cylinder cap body 25 is provided with cylinder cap shell 29, and the top of cylinder cap shell 29 is fixed with cylinder cap 30, and the outside top of cylinder cap 30 is provided with dust scraping ring 31; Be equipped with drain tap 32 on cylinder cap body 31 and the cylinder cap shell 29, form draining chamber 33 between cylinder cap body 31 and the cylinder cap shell 29, be embedded with many flexible seal rings 34 between joint ring 27 and the oil cylinder piston 84; The top of dust scraping ring 31 is provided with dust scraping ring oil collect port 66; Dust scraping ring oil collect port 66 is connected with draining passage I 67, leaves the gap between oil cylinder piston 84 and the cylinder barrel 23, and making does not have wearing and tearing between oil cylinder piston 84 and the cylinder barrel 23; Prolonged application life; Practiced thrift resource, the top of support ring 26 and cylinder cap body 25 is installed with joint ring 27, is embedded with many flexible seal rings 34 between joint ring 27 and the piston rod 20; Such structure design can stop the hydraulic oil that from the slit, comes out to overflow, and helps economizing on resources and keeping clean environment.In addition, adopt joint ring 27 and sealing ring 34 to replace the rapid wear high-pressure sealing ring, reduced the consumptive material loss, application life is of a specified duration.
Be connected with oil cylinder on the drain tap 32 on the cylinder cap shell 29 and leak oil and reclaim telescoping mechanism 6, oil cylinder leak oil reclaim telescoping mechanism 6 also comprise flexible in bar 36, extension bar seat 47, oil-scraping ring 41 and extension bar nut 48, be provided with flexible outer bar 37 in outer bar hold-down nut 39, outer bar holder 40 and the movable pulley guide rod 38; Be socketed with flexible interior bar 36 in the flexible outer bar 37, the flexible interior bar 36 outer extension bar seats 47 that are socketed with, the upper end of flexible outer bar 37 is fixed in the lower end socket of extension bar seat 47; The upper end of extension bar seat 47 is fixed on the flexible interior bar 36 by extension bar hold-down nut 48; The top of bar 36 is communicated with oil cylinder drain tap 35 in flexible, is provided with shoe cream room 43, oil-scraping ring 41 and following shoe cream room 45 in the extension bar seat 47 inner dead slots, is provided with oil collect port 17 in the extension bar hold-down nut 48; Oil collect port 17 is communicated with last shoe cream room 43 by draining passage II 49; Last shoe cream room 43 and following shoe cream room 45 are by 42 connections of the last draining passages in the oil-scraping ring 41, and draining passage 46 was communicated with flexible outer bar 37 under following shoe cream room 45 lower ends were passed through, and adopt flexible interior bar 36 to be socketed on the structure of outer bar 37 inside of stretching; In running; Capable of expansion and contraction, be not subjected to the influence of temperature and flexibility, prolonged service life; Oil-scraping ring 41, the design of going up shoe cream room 43 and following shoe cream room 45 can be played the effect of anti-leak, have strengthened sealing; Oil collect port 17 has the leakage functional oil of collecting bar outer wall in the stretching motion.
The hydraulic circuit of Hydraulic Station 8 is a hydraulic system, and hydraulic system comprises the plunger displacement pump 51 that is connected with fuel tank 50, drives the motor 52 of plunger displacement pump 51 work; Be arranged on one way valve 53, pressure meter 54 and the pressure meter switch 55 of plunger displacement pump 51 oil-outs, forced air cooler 56, electric heater 57; Liquid level liquid thermometer 58, liquid-level switch 59 and safety valve 60, one way valve 53 is connected with strainer 61; Be provided with electromagnetic relief valve 62 between one way valve 53 and the strainer 61, the oil-out of strainer 61 is connected with 3-position 4-way electro-hydraulic reversing valve 64 with accumulator 63, and two high pressure oil-outs 19 of 3-position 4-way electro-hydraulic reversing valve 64 are connected with counterweight side cylinder 10 with sucker rod side cylinder 5 respectively through high-pressure ball valve 65; 3-position 4-way electro-hydraulic reversing valve 64 drain taps 21 also are connected with counterbalance valve 68, pressure meter 54 and pressure meter switch 55; 3-position 4-way electro-hydraulic reversing valve 64 also is connected with safety valve 60, and this oil pumper hydraulic system also comprises the subsequent use plunger displacement pump 69 that is connected with fuel tank 50, and subsequent use plunger displacement pump 69 is connected with spare motor 70; Motor 52 drives plunger displacement pump 51 work; Hydraulic oil process one way valve 53 through plunger displacement pump 51 is got behind the electromagnetic relief valve 62, gets into strainer 61 and filters; After strainer 61 filters and accomplishes; Hydraulic oil gets into 3-position 4-way electro-hydraulic reversing valve 64, and sucker rod side cylinder 5 touches the travel switch signal of telecommunication with counterweight side cylinder 10 then, and the 3-position 4-way electro-hydraulic reversing valve 64 behind the reception signal produces the switching-over action; Alternately supply oil return through switching-over about 3-position 4-way electro-hydraulic reversing valve 64 to two oil cylinders, realize the oil pumping continuous operation.This hydraulic system can realize that zero load starts, and solved the problem that not have low load with strong power of solution on the oil pumper for many years.
Be fixed with wire rope on the crossbeam 81 of frame 1 and clamp mechanism 3, wire rope clamps mechanism 3 and comprises fastening body 80, and crossbeam 81 is provided with four fastening bodies 80; When needs carry out wire rope clamping action; Outside each fastening body 80, be provided with the holddown plate 15 that compresses through hold-down bolt 75, when maintenance, can keep ballast box 16 or oil cylinder not to fall, keep ballast box 16 or oil cylinder to rest on original position; Can resume work rapidly after maintenance is finished, save the working time.
Be connected through hinge 82 between tripod 12 and the frame 1, be set with pin 83 in the hinge 82, one-sided up and down when two pins 83 are removed, tripod 12 can be realized horizontally rotating, and is convenient to maintenance, and safety factor is high.
Polished rod 76 is provided with steel rope replacing mechanism, and steel rope replacing mechanism comprises jackscrew 77, polished rod clamp a72 and polished rod clamp b73, and very heavy 77 tops of spiral are fixed in polished rod 76 optional positions and are moved up and down with polished rod 76 when normally pumping; Jackscrew 77 places on the well head 78 when needing to change the wire rope 14 on the polished rod eye 74, and polished rod clamp a72 is fixed on the polished rod 76 on jackscrew 77 tops, and jackscrew 77 two ends are nut 85; Jackscrew 77 middle parts are double threaded screw 86, and nut 85 matches with double threaded screw 86, and jackscrew 77 is an outsourcing piece; Turn the double threaded screw 86 in the middle of the jackscrew 77, eject polished rod one segment distance after, can make wire rope 14 loosening; Make things convenient for wire rope 14 to change; Handled easily has been saved manpower so greatly, has improved operating efficiency.
Embodiment 2
Shown in Fig. 1-8 and 10, gravitational equilibrium hydraulic long stroke well pumping unit of the present invention,
Polished rod eye 74 bottoms are provided with replacing sensor mechanism, and replacing sensor mechanism comprises polished rod clamp c13, is flush-mounted in relieving slab a44 and relieving slab b4 on the polished rod 76, and relieving slab a44 is fixed in polished rod eye 74 bottoms; Relieving slab b4 is connected with relieving slab a44 through off-load bolt 7, is provided with the polished rod clamp c13 that is fixed in polished rod 76 tops in the space between relieving slab a44 and the relieving slab b4, and polished rod clamp c13 is close to relieving slab b4; Leave bigger space between polished rod clamp c13 and the relieving slab a44; Relieving slab a44, relieving slab b4 and polished rod clamp c13 are fixed on the bottom of polished rod eye 74, when screwing off-load bolt 7, compress between polished rod clamp c13 and the relieving slab b4; Make polished rod 76 along with moving up together; Polished rod clamp a72 is up motion also, and sensor 71 can be changed like this, handled easily; Save manpower so greatly, improved operating efficiency.
Other part is with embodiment 1.
Claims (10)
1. gravitational equilibrium hydraulic long stroke well pumping unit; Comprise that base, frame, tripod, ballast box, fixed pulley, movable pulley, polished rod eye, sucker rod side cylinder, ballast box side cylinder, oil cylinder leak oil and reclaim telescoping mechanism and Hydraulic Station; Said Hydraulic Station places on the ground of frame one side; Tripod is fixed in the frame top both sides, is fixed with six groups of fixed pulleys on the tripod.
Ballast box respectively with tripod on fixed pulley group, the running block that is separately fixed at sucker rod side cylinder and ballast box side cylinder bottom, the lanyard wheel of frame both sides be connected through wire rope with polished rod eye; Said oil cylinder leaks oil recovery telescoping mechanism and comprises movable pulley guide rod and outer bar holder, and said movable pulley guide rod is externally connected with outer bar holder, and said outer bar holder is provided with outer bar hold-down nut; Be fixed with polished rod on the said polished rod eye; Both sides, said polished rod eye center are equipped with a plurality of maos of plait decks; Each mao plait deck top all is connected with wire rope; Hair plait deck center is provided with the sensor that is inlaid on the polished rod, and said sensor top is provided with the polished rod clamp a that is fixed on the polished rod, it is characterized in that:
Said sucker rod side cylinder and ballast box side cylinder are the clearance-type oil cylinder; Each clearance-type oil cylinder includes oil cylinder piston, piston rod, oil cylinder oil inlet passage, cylinder barrel and cylinder cap body, and said cylinder barrel is flush-mounted in the outside of oil cylinder piston, leaves the gap between said oil cylinder piston and the cylinder barrel; The upper outside of said cylinder barrel is fixed with cylinder cap body; The upper inner of cylinder cap body is provided with support ring, and the top of said support ring and cylinder cap body is installed with joint ring, leaves the gap between the cylinder cap body of support ring bottom and the piston rod; The bottom of said cylinder barrel is fixedly connected with oil cylinder cylinder bottom cap; The outer cover of said cylinder cap body is provided with cylinder cap shell, and the top of said cylinder cap shell is fixed with the cylinder cap, and the outside top of said cylinder cap is provided with dust scraping ring; Be equipped with drain tap on said cylinder cap body and the cylinder cap shell, form the draining chamber between said cylinder cap body and the cylinder cap shell;
Be connected with oil cylinder on the drain tap on the cylinder cap shell and leak oil recovery telescoping mechanism; Said oil cylinder leaks oil recovery telescoping mechanism and also comprises flexible interior bar; The extension bar seat; Oil-scraping ring and extension bar nut; Said outer bar hold-down nut; Be provided with flexible outer bar in outer bar holder and the movable pulley guide rod; Be socketed with flexible interior bar in the said flexible outer bar; Said flexible interior bar is socketed with the extension bar seat outward; The upper end of flexible outer bar is fixed in the lower end socket of said extension bar seat; The upper end of said extension bar seat is fixed on the flexible interior bar by the extension bar hold-down nut; The top of said flexible interior bar is communicated with the oil cylinder drain tap; Be provided with shoe cream room in the inner dead slot of said extension bar seat; Oil-scraping ring and following shoe cream room; Be provided with oil collect port in the said extension bar hold-down nut; Said oil collect port is communicated with last shoe cream room by draining passage II; Said shoe cream room and the following shoe cream room gone up be by the last draining channel connection in the oil-scraping ring, said down under the shoe cream room lower end is passed through the draining passage be communicated with flexible outer bar.
3. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1 is characterized in that: be embedded with many flexible seal rings between said joint ring and the piston rod.
4. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1 is characterized in that: the top of said dust scraping ring is provided with the dust scraping ring oil collect port, and said dust scraping ring oil collect port is connected with draining passage I.
5. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1; It is characterized in that: the hydraulic circuit of Hydraulic Station is a hydraulic system, and said hydraulic system comprises the plunger displacement pump that is connected with fuel tank, drives the motor of plunger displacement pump work; Be arranged on one way valve, pressure meter and the pressure meter switch of plunger displacement pump oil-out; Forced air cooler, electric heater, liquid level liquid thermometer; Liquid-level switch and safety valve; Said one way valve is connected with strainer, is provided with electromagnetic relief valve between said one way valve and the strainer, and the oil-out of said strainer is connected with the 3-position 4-way electro-hydraulic reversing valve with accumulator; Two high pressure oil-outs of said 3-position 4-way electro-hydraulic reversing valve are connected with the counterweight side cylinder with the sucker rod side cylinder respectively through high-pressure ball valve, and said 3-position 4-way electro-hydraulic reversing valve drain tap also is connected with counterbalance valve, pressure meter and pressure meter switch.
6. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 4; It is characterized in that: said 3-position 4-way electro-hydraulic reversing valve also is connected with safety valve; This oil pumper hydraulic system also comprises the subsequent use plunger displacement pump that is connected with fuel tank, and said subsequent use plunger displacement pump is connected with spare motor.
7. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1; It is characterized in that: be fixed with wire rope on the crossbeam of frame and clamp mechanism; Wire rope clamps mechanism and comprises fastening body; Crossbeam is provided with four fastening bodies, when needs carry out wire rope clamping action, outside each fastening body, is provided with the holddown plate that compresses through hold-down bolt; Holddown plate quantity is 1-20.
8. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1 is characterized in that: be connected through the hinge between said tripod and the frame, be set with pin in the said hinge.
9. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1; It is characterized in that: said polished rod is provided with steel rope replacing mechanism; Said steel rope replacing mechanism comprises jackscrew and polished rod clamp b; Said jackscrew is fixed in the polished rod optional position and moves up and down with polished rod during normal oil pumping, and jackscrew places on the well head when needing to change the wire rope on the polished rod eye, and polished rod clamp a is fixed on the polished rod on jackscrew top.
10. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1; It is characterized in that: said polished rod eye bottom is provided with replacing sensor mechanism; Said replacing sensor mechanism comprises polished rod clamp c, is flush-mounted in relieving slab a and relieving slab b on the polished rod; Said relieving slab a is fixed in the polished rod eye bottom, and said relieving slab b is connected with relieving slab a through the off-load bolt, is provided with the polished rod clamp c that is fixed on the polished rod in the space between said relieving slab a and the relieving slab b; Said polished rod clamp c is close to relieving slab b, leaves bigger space between polished rod clamp c and the relieving slab a.
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| CN201210208429.0A CN102704897B (en) | 2012-06-25 | 2012-06-25 | Gravitational equilibrium hydraulic pressure long stroke pumping unit |
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| CN105464632A (en) * | 2016-01-05 | 2016-04-06 | 靳宝才 | Gravity balance difference pumping unit |
| CN105909217A (en) * | 2016-06-22 | 2016-08-31 | 杜殿起 | Fully automatic hydraulic oil pumping unit with double cylinders connected in parallel |
| CN106321024A (en) * | 2016-08-31 | 2017-01-11 | 胜利油田高原石油装备有限责任公司 | Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method |
| CN107878805A (en) * | 2017-12-15 | 2018-04-06 | 巩义市恒星金属制品有限公司 | Bale weight zinc-coated wire pressing device |
| CN109798090A (en) * | 2017-11-17 | 2019-05-24 | 珠海万博科学服务有限公司 | A kind of energy-efficient extraction petroleum environmental protection equipment |
| CN111706301A (en) * | 2020-07-13 | 2020-09-25 | 李文斌 | Two-well one-machine automatic reversing hydraulic pumping unit and control system thereof |
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| CN113007060A (en) * | 2021-03-19 | 2021-06-22 | 上海樱洛机电科技有限公司 | Electric cylinder driving device and beam-pumping unit comprising same |
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| CN102913198A (en) * | 2012-10-26 | 2013-02-06 | 施伟 | Clustered hydraulic pumping unit |
| US9903361B2 (en) * | 2012-10-30 | 2018-02-27 | Shanghai Lianchuang Industrial Co., Ltd. | Derrick-type long-stroke hydraulic pumping unit |
| CN102937013A (en) * | 2012-10-30 | 2013-02-20 | 南通新中国际贸易有限公司 | Derrick type long-stroke hydraulic pumping unit |
| WO2014067036A1 (en) * | 2012-10-30 | 2014-05-08 | 南通新中国际贸易有限公司 | Derrick-type long-stroke hydraulic pumping unit |
| CN102937013B (en) * | 2012-10-30 | 2015-07-29 | 上海联创实业有限公司 | Headframe type long stroke hydraulic pumping unit |
| US20150330384A1 (en) * | 2012-10-30 | 2015-11-19 | Zhongxin Xiang | Derrick-type long-stroke hydraulic pumping unit |
| CN105257254A (en) * | 2015-10-23 | 2016-01-20 | 胜利油田新大管业科技发展有限责任公司 | Hydraulic pumping unit with tension-bearing oil cylinder and application method |
| CN105464632B (en) * | 2016-01-05 | 2017-11-28 | 靳宝才 | Gravitational equilibrium difference oil pumper |
| CN105464632A (en) * | 2016-01-05 | 2016-04-06 | 靳宝才 | Gravity balance difference pumping unit |
| CN105909217A (en) * | 2016-06-22 | 2016-08-31 | 杜殿起 | Fully automatic hydraulic oil pumping unit with double cylinders connected in parallel |
| CN106321024B (en) * | 2016-08-31 | 2018-09-28 | 胜利油田高原石油装备有限责任公司 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
| CN106321024A (en) * | 2016-08-31 | 2017-01-11 | 胜利油田高原石油装备有限责任公司 | Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method |
| CN109798090A (en) * | 2017-11-17 | 2019-05-24 | 珠海万博科学服务有限公司 | A kind of energy-efficient extraction petroleum environmental protection equipment |
| CN107878805A (en) * | 2017-12-15 | 2018-04-06 | 巩义市恒星金属制品有限公司 | Bale weight zinc-coated wire pressing device |
| CN107878805B (en) * | 2017-12-15 | 2023-12-08 | 巩义市恒星金属制品有限公司 | Large bundle heavy galvanized steel wire pressing device |
| CN112177573A (en) * | 2019-12-31 | 2021-01-05 | 姜经志 | Intelligent hydraulic pumping unit |
| CN112177573B (en) * | 2019-12-31 | 2024-04-12 | 威海地源节能环保科技有限公司 | Intelligent hydraulic pumping unit |
| CN111706301A (en) * | 2020-07-13 | 2020-09-25 | 李文斌 | Two-well one-machine automatic reversing hydraulic pumping unit and control system thereof |
| CN113007060A (en) * | 2021-03-19 | 2021-06-22 | 上海樱洛机电科技有限公司 | Electric cylinder driving device and beam-pumping unit comprising same |
| CN113007060B (en) * | 2021-03-19 | 2023-10-17 | 上海樱洛机电科技有限公司 | Electric cylinder driving device and beam pumping unit comprising same |
| CN113123766A (en) * | 2021-05-11 | 2021-07-16 | 姜经志 | Energy-saving and environment-friendly high-reliability pump control hydraulic system of hydraulic pumping unit |
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Effective date of registration: 20160223 Address after: 226200 Jiangsu province Nantong Jiulong Town Xingang Qidong City Industrial Zone No. 118 Patentee after: Qidong risen heavy industry petroleum equipment Technology Co., Ltd. Address before: Yang Zhenjiang Qidong city in Jiangsu province Nantong city 226200 Yin Xia Village thirteen Group No. 128 Patentee before: Shi Wei |