CN102704897B - Gravitational equilibrium hydraulic pressure long stroke pumping unit - Google Patents
Gravitational equilibrium hydraulic pressure long stroke pumping unit Download PDFInfo
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- CN102704897B CN102704897B CN201210208429.0A CN201210208429A CN102704897B CN 102704897 B CN102704897 B CN 102704897B CN 201210208429 A CN201210208429 A CN 201210208429A CN 102704897 B CN102704897 B CN 102704897B
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- 238000005086 pumping Methods 0.000 title claims abstract description 29
- 239000003921 oil Substances 0.000 claims abstract description 115
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000007790 scraping Methods 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000010727 cylinder oil Substances 0.000 claims abstract description 6
- 239000006071 cream Substances 0.000 claims description 22
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 241001191009 Gymnomyza Species 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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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 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 by the way of pressurization.At present, oil field is generally used " three take out " (oil well pump, sucker rod, oil pumper) mode to carry out oil producing operation, and oil pumper used mostly is beam pumping unit (machine of kowtowing).
Existing hydraulic pumping unit cylinder structure, works long hours between back piston and cylinder barrel and easily to produce wearing and tearing, has also affected operating efficiency when reducing oil cylinder application life.In addition, existing cylinder structure bears alternation high pressure because of its oil sealing, and sealing performance is bad, and oil sealing is easily aging, damages, and often occurs that hydraulic oil overflows from gap, causes pressure release also to cause the wasting of resources.Existing hydraulic pumping unit generally all exists above-mentioned some shortcomings.
The leakage oil interface of oil cylinder original structure, employing be sebific duct, in running, sebific duct is subject to temperature, bending, aging impact, application life is short, easily damaged.
The oil pumper of existing hydraulic pressure drive control system structure, the motion that can not meet the annual ten million meter level stroke of oil pumper because of its hydraulic cylinder sealing structure is worn and torn, control system complexity simultaneously, working service technical requirements is too high, all can not meet production and the energy-conservation demand of applying unit.
In the time that gravity counter weight type oil pumper keeps in repair, first want off-load, ballast box or oil cylinder need to be fallen to ground or on earth.Maintenance returns to original position ballast box or oil cylinder when end again, hangs up load.But the weight of ballast box or oil cylinder is very heavy, bring very large difficulty to returning to original position work, expend a lot of repair time.
Existing most many group high-strength bolts, the flanges of adopting of well mechanism intermediate cam frame that allow without beam pumping unit are fixed, if device fails, must place under repair by backing out one by one nut, so if while being positioned at work high above the ground, so not only make maintenance difficult, and easily cause danger.
Existing oil pumper, more loaded down with trivial details in the taking-up process of carrying out sensor, and also also more painstaking in loosening wire rope, bring very large difficulty to workman, seriously reduce operating efficiency.
Therefore, be badly in need of a kind of improved technology and solve existing this series of problems in prior art.
Summary of the invention
The object of this invention is to provide a kind of novel gravitational equilibrium hydraulic long stroke well pumping unit, lightweight, the easy to maintenance convenience of its complete machine, do not turn over machine, do not pound well, safety factor is high, long service life, and operating efficiency is high.
The present invention is that the technical scheme that addresses the above problem employing is:
Gravitational equilibrium hydraulic long stroke well pumping unit, comprise base, frame, tripod, ballast box, fixed pulley, movable pulley, polished rod eye, sucker rod side cylinder, ballast box side cylinder, oil cylinder leaks oil and reclaims telescoping mechanism and Hydraulic Station, described Hydraulic Station is placed on the ground of frame one side, tripod is fixed on frame top both sides, on tripod, be fixed with six groups of fixed pulleys, ballast box respectively with tripod on fixed pulley group, be separately fixed at the running block of sucker rod side cylinder and ballast box side cylinder bottom, the lanyard wheel of frame both sides is connected by wire rope with polished rod eye, described oil cylinder leaks oil recovery telescoping mechanism and comprises movable pulley guide rod and outer bar holder, and described movable pulley guide rod is externally connected with outer bar holder, and described outer bar holder is provided with outer bar hold-down nut, on described polished rod eye, be fixed with polished rod, both sides, described polished rod eye center are equipped with multiple maos of plait decks, and each mao of plait deck top is all connected with wire rope, and hair plait deck center is provided with the sensor being inlaid on polished rod, described sensor top is provided with the optical-rod clamp a being fixed on polished rod
Described sucker rod side cylinder and ballast box side cylinder are 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, described cylinder barrel is flush-mounted in the outside of oil cylinder piston, between described oil cylinder piston and cylinder barrel, leave gap, the upper outside of described cylinder barrel is fixed with cylinder cap body, the upper inner of cylinder cap body is provided with support ring, the top of described support ring and cylinder cap body is installed with joint ring, between the cylinder cap body of support ring bottom and piston rod, leave gap, the bottom of described cylinder barrel is fixedly connected with cap at the bottom of oil cylinder, the outer cover of described cylinder cap body is provided with cylinder cap shell, the top of described cylinder cap shell is fixed with cylinder cap, the outside top of described cylinder cap is provided with dust scraping ring, on described cylinder cap body and cylinder cap shell, be equipped with drain tap, between described cylinder cap body and cylinder cap shell, form draining chamber,
On drain tap on cylinder cap shell, be connected with oil cylinder and leak oil recovery telescoping mechanism, described oil cylinder leaks oil recovery telescoping mechanism and also comprises flexible Inner bar, extension bar seat, oil-scraping ring and extension bar nut, described outer bar hold-down nut, in outer bar holder and movable pulley guide rod, be provided with flexible outer bar, in described flexible outer bar, be socketed with flexible interior bar, described flexible interior bar is socketed with extension bar seat outward, the lower end of described extension bar seat is fixed by socket the upper end of bar outside flexible, the upper end of described extension bar seat is fixed on flexible interior bar by extension bar hold-down nut, the top of described flexible interior bar is communicated with oil cylinder drain tap, in the inner dead slot of described extension bar seat, be provided with shoe cream room, oil-scraping ring and lower shoe cream room, in described extension bar hold-down nut, be provided with oil collect port, described oil collect port is communicated with upper shoe cream room by draining passage II, described upper shoe cream room and lower shoe cream room are by the upper draining channel connection in oil-scraping ring, described lower shoe cream room lower end is communicated with flexible outer bar by lower draining passage.
Between described joint ring and piston rod, be embedded with many flexible seal rings.
The top of described dust scraping ring is provided with dust scraping ring oil collect port, and described dust scraping ring oil collect port is connected with draining passage I.
The hydraulic circuit of Hydraulic Station is a hydraulic system, described hydraulic system comprises the plunger displacement pump being connected with fuel tank, drive the motor of plunger displacement pump work, be arranged on the one way valve of plunger displacement pump oil-out, pressure meter and pressure meter switch, forced air cooler, electric heater, liquid level liquid thermometer, liquid-level switch and safety valve, described one way valve is connected with strainer, between described one way valve and strainer, be provided with electromagnetic relief valve, the oil-out of described strainer is connected with accumulator and 3-position 4-way electro-hydraulic reversing valve, two high pressure oil-outs of described 3-position 4-way electro-hydraulic reversing valve are connected with sucker rod side cylinder and counterweight side cylinder respectively by high-pressure ball valve, described 3-position 4-way electro-hydraulic reversing valve drain tap also with counterbalance valve, pressure meter and pressure meter switch connect.
Described 3-position 4-way electro-hydraulic reversing valve is also connected with safety valve, and this pumping unit hydraulic system also comprises the plunger displacement pump for subsequent use being connected with fuel tank, and described plunger displacement pump for subsequent use is connected with spare motor.
On the crossbeam of frame, be fixed with wire rope and clamp mechanism, wire rope clamps mechanism and comprises fastening body, and crossbeam is provided with four fastening bodies, in the time that needs carry out wire rope clamping action, is provided with the holddown plate compressing by hold-down bolt at each fastening body outward; Holddown plate quantity is 1-20.
Between described tripod and frame, be connected through the hinge, in described hinge, be set with pin.
Described polished rod is provided with steel rope replacing mechanism, described steel rope replacing mechanism comprises jackscrew and optical-rod clamp b, described in when normal oil pumping, jackscrew is fixed on polished rod optional position and moves up and down with polished rod, need to change the wire rope on polished rod eye time, jackscrew is placed on well head, and optical-rod clamp a is fixed on the polished rod on jackscrew top.
Described polished rod eye bottom is provided with replacing sensor mechanism, described replacing sensor mechanism comprises optical-rod clamp c, is flush-mounted in relieving slab a and relieving slab b on polished rod, described relieving slab a is fixed on polished rod eye bottom, described relieving slab b is connected with relieving slab a by off-load bolt, in space between described relieving slab a and relieving slab b, be provided with the optical-rod clamp c being fixed on polished rod, described optical-rod clamp c is close to relieving slab b, between optical-rod clamp c and relieving slab a, leaves larger space.
Advantage of the present invention is: rational in infrastructure, long service life, to control highly sensitively, and automaticity is high, is conducive to economize on resources and increase work efficiency.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is cylinder structure schematic diagram of the present invention.
Fig. 3 is the local enlarged diagram at A place in 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 in 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 present invention 1 steel rope replacing structure.
Figure 10 is the structural representation of the embodiment of the present invention 2 replacing sensor structures.
Wherein: 1, frame, 2, base, 3, wire rope clamps mechanism, 4, relieving slab b, 5, sucker rod side cylinder, 6, oil cylinder leaks oil and reclaims telescoping mechanism, 7, off-load bolt, 8, Hydraulic Station, 9, fixed pulley, 10, ballast box side cylinder, 11, movable pulley, 12, tripod, 13, optical-rod clamp c, 14, wire rope, 15, holddown plate, 16, ballast box, 17, oil collect port, 18, lanyard wheel, 19, high pressure oil-out, 20, piston rod, 21, drain tap, 22, oil cylinder oil inlet passage, 23, cylinder barrel, 24, gap, 25, cylinder cap body, 26, support ring, 27, joint ring, 28, cap at the bottom of oil cylinder, 29, cylinder cap shell, 30, cylinder cap, 31, dust scraping ring, 32, drain tap, 33, draining chamber, 34, sealing ring, 35, oil cylinder drain tap, 36, bar in flexible, 37, flexible outer bar, 38, movable pulley guide rod, 39, outer bar hold-down nut, 40, outer bar holder, 41, oil-scraping ring, 42, upper draining passage, 43, upper shoe cream room, 44, relieving slab a, 45, lower shoe cream room, 46, lower draining passage, 47, extension bar seat, 48, 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, liquid level liquid thermometer, 59, liquid-level switch, 60, safety valve, 61, strainer, 62, electromagnetic relief valve, 63, accumulator, 64, 3-position 4-way electro-hydraulic reversing valve, 65, high-pressure ball valve, 66, dust scraping ring oil collect port, 67, draining passage I, 68, counterbalance valve, 69, plunger displacement pump for subsequent use, 70, spare motor, 71, sensor, 72, optical-rod clamp a, 73, , optical-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
As shown in Figure 1 to 9, gravitational equilibrium hydraulic long stroke well pumping unit of the present invention, comprise 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 leaks oil and reclaims telescoping mechanism 6 and Hydraulic Station 8, Hydraulic Station 8 is placed on the ground of frame 1 one sides, tripod 12 is fixed on frame 1 both sides, top, on tripod 12, be fixed with six groups of fixed pulleys 9, ballast box 16 respectively with tripod 12 on fixed pulley group, be separately fixed at the movable pulley 11 of sucker rod side cylinder 5 and ballast box side cylinder 10 bottoms, the lanyard wheel 18 of frame 1 both sides is connected by 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, on polished rod eye 74, be fixed with polished rod 76, polished rod eye 74 both sides, center are equipped with multiple maos of plait decks 79, each mao of plait deck 79 tops are all connected with wire rope 14, hair plait deck 79 centers are provided with the sensor 71 being inlaid on polished rod 76, and sensor 71 is provided with the optical-rod clamp a72 being fixed on polished rod 76.
Sucker rod side cylinder 5 and ballast box side cylinder 10 are clearance-type oil cylinder, 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, cylinder barrel 23 is flush-mounted in the outside of oil cylinder piston 84, between oil cylinder piston 84 and cylinder barrel 23, leave gap 24, the upper outside of cylinder barrel 23 is fixed with cylinder cap body 25, 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, between the cylinder cap body 25 of support ring 26 bottoms and piston rod 20, leave gap, the bottom of cylinder barrel 23 is fixedly connected with cap at the bottom of oil cylinder 28, the outer cover of cylinder cap body 25 is provided with cylinder cap shell 29, the top of cylinder cap shell 29 is fixed with cylinder cap 30, the outside top of cylinder cap 30 is provided with dust scraping ring 31, on cylinder cap body 31 and cylinder cap shell 29, be equipped with drain tap 32, between cylinder cap body 31 and cylinder cap shell 29, form draining chamber 33, between joint ring 27 and oil cylinder piston 84, be embedded with many flexible seal rings 34, 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, between oil cylinder piston 84 and cylinder barrel 23, leave gap, make between oil cylinder piston 84 and cylinder barrel 23 without wearing and tearing, extend application life, save resource, the top of support ring 26 and cylinder cap body 25 is installed with joint ring 27, between joint ring 27 and piston rod 20, be embedded with many flexible seal rings 34, such structure design can stop from gap hydraulic oil out to overflow, be conducive to economize on resources and keep clean environment.In addition, adopt joint ring 27 and sealing ring 34 to replace rapid wear high-pressure sealing ring, reduced consumptive material loss, application life is of a specified duration.
On drain tap 32 on cylinder cap shell 29, be connected with oil cylinder and leak oil recovery telescoping mechanism 6, oil cylinder leaks oil recovery telescoping mechanism 6 and also comprises flexible Inner bar 36, extension bar seat 47, oil-scraping ring 41 and extension bar nut 48, outer bar hold-down nut 39, in outer bar holder 40 and movable pulley guide rod 38, be provided with flexible outer bar 37, in flexible outer bar 37, be socketed with flexible interior bar 36, the outer extension bar seat 47 that is socketed with of bar 36 in flexible, the lower end of extension bar seat 47 is fixed by socket the upper end of bar 37 outside flexible, the upper end of extension bar seat 47 is fixed on flexible interior bar 36 by extension bar hold-down nut 48, in flexible, the top of bar 36 is communicated with oil cylinder drain tap 35, in the inner dead slot of extension bar seat 47, be provided with shoe cream room 43, oil-scraping ring 41 and lower shoe cream room 45, in extension bar hold-down nut 48, be provided with oil collect port 17, oil collect port 17 is communicated with upper shoe cream room 43 by draining passage II 49, upper shoe cream room 43 and lower shoe cream room 45 are communicated with by the upper draining passage 42 in oil-scraping ring 41, lower shoe cream room 45 lower ends are communicated with flexible outer bar 37 by lower draining passage 46, adopt flexible interior bar 36 to be socketed on the structure of flexible outer bar 37 inside, in running, capable of expansion and contraction, be not subject to the impact of temperature and flexibility, extend application life, the design of oil-scraping ring 41, upper shoe cream room 43 and lower shoe cream room 45, can play effect of anti-leak, has strengthened sealing, oil collect port 17 has the leakage functional oil of collecting bar outer wall in stretching motion.
The hydraulic circuit of Hydraulic Station 8 is a hydraulic system, hydraulic system comprises the plunger displacement pump 51 being connected with fuel tank 50, the motor 52 that drives plunger displacement pump 51 to work, be arranged on the one way valve 53 of plunger displacement pump 51 oil-outs, pressure meter 54 and pressure meter switch 55, 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, between one way valve 53 and strainer 61, be provided with electromagnetic relief valve 62, the oil-out of strainer 61 is connected with accumulator 63 and 3-position 4-way electro-hydraulic reversing valve 64, two high pressure oil-outs 19 of 3-position 4-way electro-hydraulic reversing valve 64 are connected with sucker rod side cylinder 5 and counterweight side cylinder 10 respectively by high-pressure ball valve 65, 3-position 4-way electro-hydraulic reversing valve 64 drain taps 21 also with counterbalance valve 68, pressure meter 54 and pressure meter switch 55 connect, 3-position 4-way electro-hydraulic reversing valve 64 is also connected with safety valve 60, this pumping unit hydraulic system also comprises the plunger displacement pump for subsequent use 69 being connected with fuel tank 50, plunger displacement pump 69 for subsequent use is connected with spare motor 70, motor 52 drives plunger displacement pump 51 to work, the hydraulic oil of getting by plunger displacement pump 51 is through one way valve 53, after electromagnetic relief valve 62, entering strainer 61 filters, after strainer 61 has filtered, hydraulic oil enters 3-position 4-way electro-hydraulic reversing valve 64, then sucker rod side cylinder 5 and counterweight side cylinder 10 touch the travel switch signal of telecommunication, the 3-position 4-way electro-hydraulic reversing valve 64 receiving after signal produces commutation action, left and right commutation by 3-position 4-way electro-hydraulic reversing valve 64 alternately supplies oil return to two oil cylinders, realize oil pumping continuous operation.This hydraulic system can realize zero load and start, and has solved the problem that there is no low load with strong power of solution on oil pumper for many years.
On the crossbeam 81 of frame 1, be fixed with wire rope and clamp mechanism 3, wire rope clamps mechanism 3 and comprises fastening body 80, crossbeam 81 is provided with four fastening bodies 80, in the time that needs carry out wire rope clamping action, outside each fastening body 80, be provided with the holddown plate 15 compressing by hold-down bolt 75, in the time of maintenance, can keep ballast box 16 or oil cylinder not to fall, keep ballast box 16 or oil cylinder to rest on original position, after maintenance is finished, can resume work rapidly, save the working time.
Between tripod 12 and frame 1, be connected by hinge 82, be set with pin 83 in hinge 82, when one-sided upper and lower two pins 83 are removed, tripod 12 can be realized and horizontally rotating, and is convenient to maintenance, and safety factor is high.
Polished rod 76 is provided with steel rope replacing mechanism, steel rope replacing mechanism comprises jackscrew 77, optical-rod clamp a72 and optical-rod clamp b73, when normal oil pumping, very heavy 77 tops of spiral are fixed on polished rod 76 optional positions and move up and down with polished rod 76, need to change the wire rope 14 on polished rod eye 74 time, jackscrew 77 is placed on well head 78, optical-rod clamp a72 is fixed on the polished rod 76 on jackscrew 77 tops, jackscrew 77 two ends are nut 85, jackscrew 77 middle parts are double threaded screw 86, nut 85 matches with double threaded screw 86, jackscrew 77 is outsourcing piece, turn the middle double threaded screw 86 of jackscrew 77, eject after polished rod one segment distance, can make wire rope 14 loosening, facilitate wire rope 14 to change, handled easily, so greatly save manpower, improve operating efficiency.
Embodiment 2
As 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, replacing sensor mechanism comprises optical-rod clamp c13, be flush-mounted in relieving slab a44 and relieving slab b4 on polished rod 76, relieving slab a44 is fixed on polished rod eye 74 bottoms, relieving slab b4 is connected with relieving slab a44 by off-load bolt 7, in space between relieving slab a44 and relieving slab b4, be provided with the optical-rod clamp c13 that is fixed on polished rod 76 tops, optical-rod clamp c13 is close to relieving slab b4, between optical-rod clamp c13 and relieving slab a44, leave larger space, relieving slab a44, relieving slab b4 and optical-rod clamp c13 are fixed on the bottom of polished rod eye 74, in the time screwing off-load bolt 7, between optical-rod clamp c13 and relieving slab b4, compress, make polished rod 76 along with moving up together, optical-rod clamp a72 is up motion also, sensor 71 can be changed like this, handled easily, so greatly save manpower, improve operating efficiency.
Other parts are with embodiment 1.
Claims (9)
1. gravitational equilibrium hydraulic long stroke well pumping unit, comprise base, frame, tripod, ballast box, fixed pulley, movable pulley, polished rod eye, sucker rod side cylinder, ballast box side cylinder, oil cylinder leaks oil and reclaims telescoping mechanism and Hydraulic Station, described Hydraulic Station is placed on the ground of frame one side, tripod is fixed on frame top both sides, on tripod, be fixed with six groups of fixed pulleys, ballast box respectively with tripod on fixed pulley group, be separately fixed at the running block of sucker rod side cylinder and ballast box side cylinder bottom, the lanyard wheel of frame both sides is connected by wire rope with polished rod eye, described oil cylinder leaks oil recovery telescoping mechanism and comprises movable pulley guide rod and outer bar holder, and described movable pulley guide rod is externally connected with outer bar holder, and described outer bar holder is provided with outer bar hold-down nut, on described polished rod eye, be fixed with polished rod, both sides, described polished rod eye center are equipped with multiple maos of plait decks, each mao of plait deck top is all connected with wire rope, hair plait deck center is provided with the sensor being inlaid on polished rod, described sensor top is provided with the optical-rod clamp a being fixed on polished rod, it is characterized in that:
Described sucker rod side cylinder and ballast box side cylinder are 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, described cylinder barrel is flush-mounted in the outside of oil cylinder piston, between described oil cylinder piston and cylinder barrel, leave gap, the upper outside of described cylinder barrel is fixed with cylinder cap body, the upper inner of cylinder cap body is provided with support ring, the top of described support ring and cylinder cap body is installed with joint ring, between the cylinder cap body of support ring bottom and piston rod, leave gap, the bottom of described cylinder barrel is fixedly connected with cap at the bottom of oil cylinder, the outer cover of described cylinder cap body is provided with cylinder cap shell, the top of described cylinder cap shell is fixed with cylinder cap, the outside top of described cylinder cap is provided with dust scraping ring, on described cylinder cap body and cylinder cap shell, be equipped with drain tap, between described cylinder cap body and cylinder cap shell, form draining chamber,
On drain tap on cylinder cap shell, be connected with oil cylinder and leak oil recovery telescoping mechanism, described oil cylinder leaks oil recovery telescoping mechanism and also comprises flexible Inner bar, extension bar seat, oil-scraping ring and extension bar nut, described outer bar hold-down nut, in outer bar holder and movable pulley guide rod, be provided with flexible outer bar, in described flexible outer bar, be socketed with flexible interior bar, described flexible interior bar is socketed with extension bar seat outward, the lower end of described extension bar seat is fixed by socket the upper end of bar outside flexible, the upper end of described extension bar seat is fixed on flexible interior bar by extension bar hold-down nut, the top of described flexible interior bar is communicated with oil cylinder drain tap, in the inner dead slot of described extension bar seat, be provided with shoe cream room, oil-scraping ring and lower shoe cream room, in described extension bar hold-down nut, be provided with oil collect port, described oil collect port is communicated with upper shoe cream room by draining passage II, described upper shoe cream room and lower shoe cream room are by the upper draining channel connection in oil-scraping ring, described lower shoe cream room lower end is communicated with flexible outer bar by lower draining passage.
2. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, is characterized in that: between described joint ring and piston rod, be embedded with many flexible seal rings.
3. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, is characterized in that: the top of described dust scraping ring is provided with dust scraping ring oil collect port, and described dust scraping ring oil collect port is connected with draining passage I.
4. 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, described hydraulic system comprises the plunger displacement pump being connected with fuel tank, drive the motor of plunger displacement pump work, be arranged on the one way valve of plunger displacement pump oil-out, pressure meter and pressure meter switch, forced air cooler, electric heater, liquid level liquid thermometer, liquid-level switch and safety valve, described one way valve is connected with strainer, between described one way valve and strainer, be provided with electromagnetic relief valve, the oil-out of described strainer is connected with accumulator and 3-position 4-way electro-hydraulic reversing valve, two high pressure oil-outs of described 3-position 4-way electro-hydraulic reversing valve are connected with sucker rod side cylinder and ballast box side cylinder respectively by high-pressure ball valve, described 3-position 4-way electro-hydraulic reversing valve drain tap also with counterbalance valve, pressure meter and pressure meter switch connect.
5. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 4, it is characterized in that: described 3-position 4-way electro-hydraulic reversing valve is also connected with safety valve, this pumping unit hydraulic system also comprises the plunger displacement pump for subsequent use being connected with fuel tank, and described plunger displacement pump for subsequent use is connected with spare motor.
6. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, it is characterized in that: on the crossbeam of frame, be fixed with wire rope and clamp mechanism, wire rope clamps mechanism and comprises fastening body, crossbeam is provided with four fastening bodies, in the time that needs carry out wire rope clamping action, be provided with the holddown plate compressing by hold-down bolt outward at each fastening body; Holddown plate quantity is 1-20.
7. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, is characterized in that: between described tripod and frame, be connected through the hinge, in described hinge, be set with pin.
8. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, it is characterized in that: described polished rod is provided with steel rope replacing mechanism, described steel rope replacing mechanism comprises jackscrew and optical-rod clamp b, described in when normal oil pumping, jackscrew is fixed on polished rod optional position and moves up and down with polished rod, need to change the wire rope on polished rod eye time, jackscrew is placed on well head, and optical-rod clamp a is fixed on the polished rod on jackscrew top.
9. gravitational equilibrium hydraulic long stroke well pumping unit according to claim 1, it is characterized in that: described polished rod eye bottom is provided with replacing sensor mechanism, described replacing sensor mechanism comprises optical-rod clamp c, is flush-mounted in relieving slab a and relieving slab b on polished rod, described relieving slab a is fixed on polished rod eye bottom, described relieving slab b is connected with relieving slab a by off-load bolt, in space between described relieving slab a and relieving slab b, be provided with the optical-rod clamp c being fixed on polished rod, described optical-rod clamp c is close to relieving slab b, between optical-rod clamp c and relieving slab a, leaves space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208429.0A CN102704897B (en) | 2012-06-25 | 2012-06-25 | Gravitational equilibrium hydraulic pressure long stroke pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208429.0A CN102704897B (en) | 2012-06-25 | 2012-06-25 | Gravitational equilibrium hydraulic pressure long stroke pumping unit |
Publications (2)
| Publication Number | Publication Date |
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| CN102704897A CN102704897A (en) | 2012-10-03 |
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| CN102913198A (en) * | 2012-10-26 | 2013-02-06 | 施伟 | Clustered 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 |
| 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 |
| 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 |
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| 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 |
| 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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| CN2285833Y (en) * | 1994-12-28 | 1998-07-08 | 曹荣禄 | Hydraulic pumping unit |
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| CN102086761A (en) * | 2011-01-31 | 2011-06-08 | 周国峰 | Vertical gear rack pumping unit driven by hydraulic motor |
| CN102140896A (en) * | 2011-01-20 | 2011-08-03 | 中国石油集团渤海石油装备制造有限公司 | Multi-hydraulic cylinder electric energy-accumulation well repairing machine with energy accumulator |
| CN102182429A (en) * | 2011-04-02 | 2011-09-14 | 中国石油大学(华东) | Air balance hydraulic pumping unit for offshore platform |
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| US7699097B2 (en) * | 2008-06-11 | 2010-04-20 | Digitek Technology Co., Ltd. | Mover stabilizing and stator cooling arrangement of a 3-phase linear motor of a submersible oil pump |
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| CN2285833Y (en) * | 1994-12-28 | 1998-07-08 | 曹荣禄 | Hydraulic pumping unit |
| CN1654781A (en) * | 2005-03-07 | 2005-08-17 | 周爽 | Tower type hydraulic long stroke well pumping unit |
| CN102140896A (en) * | 2011-01-20 | 2011-08-03 | 中国石油集团渤海石油装备制造有限公司 | Multi-hydraulic cylinder electric energy-accumulation well repairing machine with energy accumulator |
| CN102086761A (en) * | 2011-01-31 | 2011-06-08 | 周国峰 | Vertical gear rack pumping unit driven by hydraulic motor |
| CN102182429A (en) * | 2011-04-02 | 2011-09-14 | 中国石油大学(华东) | Air balance hydraulic pumping unit for offshore platform |
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| CN102704897A (en) | 2012-10-03 |
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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 |
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