CN102808751A - Oilfield high-flow reciprocating water injection pump - Google Patents
Oilfield high-flow reciprocating water injection pump Download PDFInfo
- Publication number
- CN102808751A CN102808751A CN2012101943047A CN201210194304A CN102808751A CN 102808751 A CN102808751 A CN 102808751A CN 2012101943047 A CN2012101943047 A CN 2012101943047A CN 201210194304 A CN201210194304 A CN 201210194304A CN 102808751 A CN102808751 A CN 102808751A
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- water injection
- injection pump
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- eccentric wheel
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Abstract
The invention relates to an oilfield high-flow reciprocating water injection pump. The oilfield high-flow reciprocating water injection pump comprises a power end and a fluid end, wherein the power end drives a plunger of the fluid end to linearly reciprocate through a crank connecting rod mechanism; an exhaust pipe component and an intake pipe component are arranged at the fluid end; the fluid end has a five-cylinder or seven-cylinder structure; an intake valve and an exhaust valve of the fluid end are vertically arranged and respectively employ a combined ball valve; the power end has an eccentric wheel structure; a support is added to the middle of an eccentric wheel; and cylindrical roller bearings are respectively arranged between the eccentric wheel and a large head of a connecting rod and between a cross head and a cross head pin. The oilfield high-flow reciprocating water injection pump has the characteristics of high flow, high exhaust pressure, wide performance range, high efficiency, long service life and high reliability, and is a necessary reciprocating pump for high-efficiency high-flow water injection equipment. Centrifugal pump water injection equipment with low operating efficiency is replaced, pump efficiency is improved, and the problem of low energy utilization rate is solved; and meanwhile, oil production cost is reduced, great practical significance and great engineering value are realized, and the oilfield high-flow reciprocating water injection pump can be an absolutely-necessary matching product of new-generation oilfield drilling and production equipment.
Description
Technical field
The invention belongs to the improvement of conveying equipment for fluid substances technical field, particularly reciprocating pump.
Background technique
At present, oil-field flooding has become one of China's main DP technology in oil field, also is the important measures that ensure that oilfield stable production high yield guarantor produces.Yet along with the oil field gets into high water-cut development period, water injection rate increases considerably, and the water filling power consumption is also significantly risen, and water filling power consumption reaches 35 ~ 40% of whole oil power consumption, and energy problem also is on the rise.Reciprocating pump is a kind of very important fluid pressurized machinery; Have advantages such as energy-efficient, easy and simple to handle; And the accurate water filling of supporting realization constant voltage such as reciprocating pump and frequency variator, flowmeter, pressure transducer, be key equipment in the oil field operation technology.According to self-contained block of large size and the requirement of fault-block oilfield water injection technology; The pump product is used in two big types of water fillings of domestic existing main employing; Be that the big flow water injection pressure of self-contained block grade is not higher than the 16MPa operating mode, adopt the centrifugal pump product, its discharge capacity is: 140,160,250,300,350 and 400m
3/ h; 16,20,25,32,40MPa be higher than the 16MPa operating mode to the water injection pressure grade, then adopt the reciprocating plunger pump product, pressure rating is:, discharge capacity is: 9.6～100m
3/ h.Wherein centrifugal pump water injection pump unit has advantages such as structure is simple relatively, flow is big, but exists operational efficiency lower, big energy-consuming, and rotating speed and outlet lift relative fixed during operation can not be complementary with the actual bets water condition, cause problems such as actual operating efficiency is lower.At present, domestic centrifugal water injection pump efficient is generally less than 75%, and actual operating efficiency has been wasted a large amount of valuable energy then often below 60%.
Summary of the invention
The present invention seeks to design the reciprocating type water injection pump of the big flow in a kind of oil field, to improve operational efficiency.
Specifically; The reciprocating type water injection pump of the big flow in oil field has power end and fluid end, and power end is done straight reciprocating motion through the plunger that connecting rod drives fluid end; Be equipped with discharge tube assembly and suction pipe assembly on the fluid end, its fluid end fluid cylinder number is 5 cylinders or 7 cylinder structures; And the fluid end suction valve is vertical with expulsion valve to be arranged; Suction valve and expulsion valve all adopt combined type sphere valve; Power end adopts eccentric wheel structure simultaneously; Increase support in the eccentric wheel intermediate portion, between eccentric wheel and the connnecting rod big end roller bearing is installed; Between crosshead and the crosshead pin roller bearing is installed.
The reciprocating type water injection pump of the big flow of the present invention meets target that the oil field cuts down the consumption of energy during the country " 12 " and the realization of building resource-conserving, environmentally friendly enterprise.Big flow water injection pump has that flow is big, head pressure is high, performance is wide, efficient is high, the life-span is long, the characteristics of high reliability; Be the indispensable reciprocating pump of efficient big flow water injection equipment, replace the lower centrifugal pump water injection equipment of operational efficiency, improved pump efficiency; Solve the low problem of energy utilization rate; Reduce cost for oil production simultaneously, have important practical significance and great construction value, will become the indispensable auxiliary products of oil field of new generation drilling and extracting equipment.
Description of drawings
Fig. 1 is an overall structure sketch of the present invention (fluid end).
Fig. 2 is an overall structure sketch of the present invention (power end).
Fig. 3 is a power end structure diagram of the present invention.
Fig. 4 is a power end structure diagram of the present invention (Fig. 3 right flank).
Fig. 5 is a power end structure diagram of the present invention (Fig. 3 left surface).
Fig. 6 is a fluid end structure diagram of the present invention.
Fig. 7 is waveform spring structure figure (solid) among the present invention.
Fig. 8 is waveform spring structure figure (front) among the present invention.
Fig. 9 is valve seat construction schematic representation (analysing and observe) among the present invention.
Figure 10 is valve seat construction schematic representation (Fig. 9 overlooks) among the present invention.
Figure 11 is combined type sphere valve arrangement schematic representation among the present invention.
Figure 12 is valve bonnet structural representation (analysing and observe) among the present invention.
Figure 13 is valve bonnet structural representation (Figure 12 overlooks) among the present invention.
Embodiment
Below in conjunction with accompanying drawing 1-13 a kind of embodiment of the present invention is described.The reciprocating type water injection pump of the big flow in oil field; Have power end 4 and fluid end 2; Power end 4 is done straight reciprocating motion through the plunger 7 that connecting rod drives fluid end, is equipped with discharge tube assembly 1 and suction pipe assembly 3 on the fluid end 2, it is characterized in that fluid end fluid cylinder number is 5 cylinders or 7 cylinder structures; And the fluid end suction valve is vertical with expulsion valve to be arranged; Suction valve and expulsion valve all adopt combined type sphere valve; Power end adopts eccentric wheel structure simultaneously; Increase support 14 in eccentric wheel 8 intermediate portions, roller bearing 13 is installed between eccentric wheel 8 and the connnecting rod big end 9; Roller bearing 15 is installed between crosshead 11 and the crosshead pin 10.Said connecting rod comprises eccentric wheel 8, connecting rod 9 motions that are connected with eccentric wheel, and connecting rod 9 connects crosshead 11 through crosshead pin 10, and crosshead 11 is connected to plunger 7 through connecting rod 5 and does straight reciprocating motion.Be connected to a fixed with cutting ferrule 6 between connecting rod 5 and the plunger 7.Stuffing box in the fluid end adopts rapid-changing structure, and filler adopts the aramid fiber combined stuffing.Plunger 7 surface sprayings are fit to the nickel base alloy layer of oilfield sewage medium.
The present invention adopts the combined type sphere valve of particular design, has valve seat 11-1, and valve seat 11-1 intermediate throughholes connects, and via top is that spherical and valve plate 11-3 spherical form dynamic spherical sealing surface; Valve plate 11-3 top is provided with valve spring 11-4, and valve spring 11-4 top is fixed on the valve bonnet 11-5, is provided with wave mode spring 11-2 between valve bonnet 11-5 and the valve seat 11-1.Adopt the bayonet socket Connecting format between valve seat 11-1 and the valve bonnet 11-5, and wave mode spring 11-2 is between both surface of contact.Valve plate 11-3 upper-end surface has convexity, and valve spring 11-4 is enclosed within on the convexity.Fig. 7-Fig. 8 provides the structural drawing of wavy spring among the present invention, valve seat, valve bonnet respectively.
Combined type sphere valve working principle: valve seat 11-1 intermediate throughholes connects, and via top is that spherical and valve plate 11-3 spherical form dynamic spherical sealing surface; Liquid gets into valve seat by valve seat 11-1 intermediate throughholes; The pressure of liquid acts on valve plate 11-3 bottom and compression valve spring 11-4 during greater than valve plate 11-3 upper pressure, and valve plate 11-3 is lifted; Liquid gets into valve bonnet 11-5 and then gets into pump chamber through spherical sealing surface accomplishes a working procedure; When the pressure of liquid during less than valve plate 11-3 upper pressure, valve spring 11-4 forces valve plate 11-3 to fall fast, and promptly spherical sealing surface is closed; The liquid that prevents valve plate 11-3 top flows backward to valve seat orifice, so accomplishes another working procedure.
Be provided with wave mode spring 2 (the wave mode spring is the monolithic open type, sees accompanying drawing 7, accompanying drawing 8) between valve bonnet 11-5 and the valve seat 11-1.Wave mode spring 11-2 utilizes elastic force to make and guarantees a correct relative between valve bonnet 11-5 and the valve seat 11-1; Valve seat and valve bonnet adopt the bayonet socket Connecting format; Only need when assembling and dismounting valve bonnet is depressed compression wave mode spring; Valve seat and valve bonnet relatively rotate several angle then, valve seat is connected as a single entity with valve bonnet or separates.
Valve seat construction figure sees accompanying drawing 9, accompanying drawing 10.The valve bonnet structural drawing is seen accompanying drawing 12, accompanying drawing 13.
Whole combined type sphere valve can integral installation in the pump housing, perhaps wholely in the pump housing, take out, change very efficient and convenient.
Medium power end of the present invention: whether the structures shape water injection pump of power end has the long and high reliability of longer life.5ZB250,7ZB250 type water injection pump power end adopt eccentric wheel structure respectively, and be as shown in Figure 4, and suitable positions increase and support 14 in the middle of eccentric wheel 8, and supporting way becomes five and turns and three support, seven turn four supports.Owing to support to increase, make that arm of force length reduces between per two supports, improve eccentric bearing capacity, not only strengthen whole eccentric intensity but also effectively reduced weight, guarantee that eccentric wheel assembly has very high reliability.Eccentric wheel, frame adopt quality steel plate assembly welding structure, and connecting rod adopts the alloyed steel casting, and crosshead adopts the QT600-2 casting surface to carry out high frequency and handles.As shown in Figure 4, roller bearing 13 is installed between eccentric wheel 8 and the connnecting rod big end 9; As shown in Figure 5, roller bearing 15 is installed between crosshead 11 and the crosshead pin 10.All friction pairs all adopt roller bearing (rolling bearing), sliding bearing structures such as the bearing shell that change was adopted in the past, lining.Because the bearing capacity of rolling bearing, working life, reliability are all high than sliding bearing, so effectively improved the working life of friction pair, have also guaranteed the reliability of power end.
Fluid end among the present invention: the fluid end structure adopts straight-through type combination brake switch and proporting structure (Fig. 6, suction, valve are vertically arranged), has reduced clearance, effectively improves the volumetric efficiency of pump.Suction metering valve adopts combined type sphere valve (in the patent application), and combined type sphere valve can integral installation and dismounting, has to open and close reliable, highly versatile, advantage such as convenient to disassembly.Overcurrent partly adopts the high-quality stainless steel material, has good antiseptic property.Stuffing box adopts rapid-changing structure (rapid-changing structure all adopts) in existing water injection pump, filler adopts aramid fiber combined stuffing (combined packing also adopts) in existing water injection pump; The plunger surface spraying is fit to the nickel-base alloy of oilfield sewage medium and nickel-base alloy is carried out time high frequency secondary remelting, hardness HV>780, have good wear resistance and corrosion resistance, automatically the plunger drip feed oiling system.
Power end is a mechanical part, and fluid end is the liquid energy conversion portion.
Working principle: the mechanical energy of prime mover input; (drive eccentric wheel 8 rotations through connecting rod; 9 motions of eccentric wheel 8 drivening rods; Connecting rod 9 drives crossheads 11 through crosshead pin 10 and connecting rod 5 is done straight reciprocating motion) drive plunger 7 and do straight reciprocating motion, the packing seal of being adorned in plunger 7 and the Stuffing box 17 16 closely cooperates.Plunger 7 is done when inhaling Cheng Yundong backward, and suction valve 19 is opened, and expulsion valve 18 cuts out, and the low pressure liquid in the suction pipe 3 gets in the liquid cylinder 20, has accomplished the suction process of pump this moment; When plunger 7 was taken exercises forward, suction valve 19 cut out, and expulsion valve 18 is opened, and the liquid in the liquid cylinder 20 gets in the discharge tube 1 through expulsion valve 18, had accomplished the discharge process of pump this moment.The suction process of pump and discharge process make the mechanical energy of prime mover convert the potential energy of liquid into, make low-pressure liquid become high pressure liquid.
The product that uses said structure to make:
5ZB250 type water injection pump parameter
Discharge flow rate: Q=150～260m
3/ h
Head pressure: P=16～25MPa
Match power: N=1000～1250kw
7ZB250 type water injection pump parameter
Discharge flow rate: Q=210～350m
3/ h
Head pressure: P=16～25MPa
Match power: N=1400～1800kw
The peak output that 5ZB250, the reciprocating type water injection pump of 7ZB250 type are equipped with is respectively 1250KW, 1800KW, and the peak rate of flow that can carry is respectively 260m
3/ h, 350m
3/ h, maximum pressure is 25MPa.
5ZB250, the reciprocating type water injection pump of 7ZB250 type have power end 4 and fluid end 2, are equipped with discharge tube assembly 1, suction pipe assembly 3 on the fluid end 2.
The above only is a preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.
Claims (8)
1. the reciprocating type water injection pump of the big flow in oil field; Have power end (4) and fluid end (2); Power end (4) is done straight reciprocating motion through the plunger (7) that connecting rod drives fluid end; Be equipped with discharge tube assembly (1) and suction pipe assembly (3) on the fluid end (2), it is characterized in that fluid end fluid cylinder number is 5 cylinders or 7 cylinder structures; And the fluid end suction valve is vertical with expulsion valve to be arranged; Suction valve and expulsion valve all adopt combined type sphere valve; Power end adopts eccentric wheel structure simultaneously; Increase support (14) in eccentric wheel (8) intermediate portion, between eccentric wheel (8) and the connnecting rod big end (9) roller bearing (13) is installed; Between crosshead (11) and the crosshead pin (10) roller bearing (15) is installed.
2. the reciprocating type water injection pump of the big flow in oil field according to claim 1; It is characterized in that said connecting rod comprises eccentric wheel (8); The connecting rod that is connected with eccentric wheel (9) motion; Connecting rod (9) connects crosshead (11) through crosshead pin (10), and crosshead (11) is connected to plunger (7) through connecting rod (5) and does straight reciprocating motion.
3. the reciprocating type water injection pump of the big flow in oil field according to claim 2 is characterized in that being connected to a fixed with cutting ferrule (6) between connecting rod (5) and the plunger (7).
4. the reciprocating type water injection pump of the big flow in oil field according to claim 1 is characterized in that the Stuffing box in the fluid end adopts rapid-changing structure, and filler adopts the aramid fiber combined stuffing.
5. the reciprocating type water injection pump of the big flow in oil field according to claim 1 is characterized in that the spraying of plunger (7) surface is fit to the nickel base alloy layer of oilfield sewage medium.
6. the reciprocating type water injection pump of the big flow in oil field according to claim 1; It is characterized in that said combined type sphere valve; Have valve seat (11-1) and valve plate (11-3); Valve seat (11-1) intermediate throughholes connects, and valve plate (11-3) is positioned at valve seat (11-1) intermediate throughholes open-topped, it is characterized in that valve seat (11-1) intermediate throughholes top is a spherical; Valve plate (11-3) bottom has spherical, and valve seat (11-1) intermediate throughholes top spherical and valve plate (11-3) spherical form dynamic spherical sealing surface; Valve plate (11-3) top is provided with valve spring (11-4), and valve spring (11-4) top is fixed on the valve bonnet (11-5), is provided with wave mode spring (11-2) between valve bonnet (11-5) and the valve seat (11-1).
7. the reciprocating type water injection pump of the big flow in oil field according to claim 6 it is characterized in that adopting the bayonet socket Connecting format between valve seat (11-1) and the valve bonnet (11-5), and wave mode spring (11-2) is between both surface of contact.
8. the reciprocating type water injection pump of the big flow in oil field according to claim 6 according to claim 1 is characterized in that valve plate (11-3) upper-end surface has convexity, and valve spring (11-4) is enclosed within on the convexity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101943047A CN102808751A (en) | 2012-06-13 | 2012-06-13 | Oilfield high-flow reciprocating water injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101943047A CN102808751A (en) | 2012-06-13 | 2012-06-13 | Oilfield high-flow reciprocating water injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102808751A true CN102808751A (en) | 2012-12-05 |
Family
ID=47232577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101943047A Pending CN102808751A (en) | 2012-06-13 | 2012-06-13 | Oilfield high-flow reciprocating water injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102808751A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244406A (en) * | 2013-04-27 | 2013-08-14 | 天津市海盛泵业制造有限公司 | Three-cylinder plunger pump with integrated combined valves |
| CN111287955A (en) * | 2020-02-26 | 2020-06-16 | 盐城市崇达石化机械有限公司 | Guide frame spherical type hydraulic end assembly |
| CN111287954A (en) * | 2020-02-26 | 2020-06-16 | 盐城市崇达石化机械有限公司 | High pressure plunger pump valve body seal structure |
| CN112360714A (en) * | 2020-11-27 | 2021-02-12 | 宝鸡航天动力泵业有限公司 | Plunger pump |
| CN113669252A (en) * | 2021-08-20 | 2021-11-19 | 大庆市金拓石油机械制造有限公司 | Reciprocating pump hydraulic end for large-displacement plunger pump |
| CN114109760A (en) * | 2021-11-26 | 2022-03-01 | 宝鸡航天动力泵业有限公司 | Reciprocating plunger polymer injection pump for conveying high-gas-content salt-resistant polymer and hydraulic end thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244406A (en) * | 2013-04-27 | 2013-08-14 | 天津市海盛泵业制造有限公司 | Three-cylinder plunger pump with integrated combined valves |
| CN103244406B (en) * | 2013-04-27 | 2016-02-03 | 天津市海盛泵业制造有限公司 | With the three-cylinder plunger pump of integral type combination brake switch and proporting |
| CN111287955A (en) * | 2020-02-26 | 2020-06-16 | 盐城市崇达石化机械有限公司 | Guide frame spherical type hydraulic end assembly |
| CN111287954A (en) * | 2020-02-26 | 2020-06-16 | 盐城市崇达石化机械有限公司 | High pressure plunger pump valve body seal structure |
| CN112360714A (en) * | 2020-11-27 | 2021-02-12 | 宝鸡航天动力泵业有限公司 | Plunger pump |
| CN113669252A (en) * | 2021-08-20 | 2021-11-19 | 大庆市金拓石油机械制造有限公司 | Reciprocating pump hydraulic end for large-displacement plunger pump |
| CN114109760A (en) * | 2021-11-26 | 2022-03-01 | 宝鸡航天动力泵业有限公司 | Reciprocating plunger polymer injection pump for conveying high-gas-content salt-resistant polymer and hydraulic end thereof |
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Application publication date: 20121205 |