CN118110658B - Exhaust type oil pump for marine oil-gas drill - Google Patents
Exhaust type oil pump for marine oil-gas drill Download PDFInfo
- Publication number
- CN118110658B CN118110658B CN202410543036.8A CN202410543036A CN118110658B CN 118110658 B CN118110658 B CN 118110658B CN 202410543036 A CN202410543036 A CN 202410543036A CN 118110658 B CN118110658 B CN 118110658B
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- Prior art keywords
- oil
- fixed
- cavity
- plunger
- sliding
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 102
- 239000003921 oil Substances 0.000 claims description 142
- 239000004576 sand Substances 0.000 claims description 79
- 230000008878 coupling Effects 0.000 claims description 26
- 238000010168 coupling process Methods 0.000 claims description 26
- 238000005859 coupling reaction Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 34
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 230000009471 action Effects 0.000 description 11
- 238000013019 agitation Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/005—Sand trap arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/125—Reciprocating valves
- F04B53/126—Ball valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to the technical field of oil pumps and discloses an exhaust type oil pump for an ocean oil and gas drill. The plunger is provided with a first cavity, the plunger is matched with the first sealing ring to form a second cavity, a symmetrical fixing plate is fixedly connected in the second cavity, the fixing plate is slidably connected with a sliding column, the sliding column is slidably connected with a first cover plate and a second cover plate, and the first cover plate is positioned in the first cavity and is in sealing fit with an oil guide hole adjacent to the plunger. According to the invention, the second cover plate is matched with the first cover plate, so that the sealing state of the second cavity is changed, the second cavity is used for collecting gas, and the oil in the first cavity is used for replacing the gas in the second cavity, so that the phenomenon that the suction and discharge of the oil are blocked by the gas occupying the space in the pump cavity, and the pump cannot normally establish vacuum or form effective pressure difference, and thus the underground oil cannot be extracted is avoided.
Description
Technical Field
The invention relates to the technical field of oil pumps, in particular to an exhaust type oil pump for an ocean oil and gas drill.
Background
The ocean oil and gas exploitation is to exploit petroleum and natural gas and the like buried in an underground oil layer from the underground under the ocean environment, and when the ocean oil and gas exploitation is performed, the pumping unit is arranged on the drilling platform and transmits the power of the pumping unit to the pumping unit, so that the pumping unit starts to exploit the oil and gas in the ocean.
In the process of pumping oil by reciprocating the plunger of the oil pump, part of gas is pumped into the oil pump along with oil, so that the gas occupies the volume of the inner part of the oil pump, the gas enters the oil pump, the oil pump cannot form normal and effective pressure difference, the pumping efficiency is reduced, the gas entering the pump body is continuously extruded by the plunger, so that the gas rapidly expands or contracts, bubbles in the oil can be broken and generate strong impact and high temperature, and cavitation is generated in parts inside the oil pump for a long time, so that the service life of the oil pump is reduced.
Disclosure of Invention
The invention provides an exhaust type oil pump for an ocean oil and gas drill, which overcomes the defect that the production efficiency is slow due to the fact that the existing plunger type oil pump pumps in gas, and the specific technical scheme is as follows:
The utility model provides an ocean oil and gas bores adopts exhaust formula oil-well pump, including the pump barrel, sliding connection has the plunger in the pump barrel, the plunger rigid coupling has the oil pole, the bottom rigid coupling in the plunger has first sealing ring, the plunger is provided with first cavity, the top of plunger be provided with the through-hole of first cavity intercommunication, the plunger with first sealing ring cooperation forms the second cavity, the bottom of first cavity is provided with the through-hole, install the movable valve rather than bottom through-hole sealing fit, the rigid coupling has symmetrical fixed plate in the second cavity, first sealing ring with the plunger all is provided with symmetrical oil guide hole, fixed plate sliding connection runs through the plunger have the sliding column, sliding column sliding connection has first apron and second apron, first apron be located in the first cavity and with adjacent oil guide hole sealing fit on the plunger, the second apron be located the bottom of first sealing ring and with adjacent oil guide hole sealing fit on the first pump barrel, first sealing ring and second apron have its adjacent pump barrel sealing ring and first apron have the first and the second and have the fixed plate of first sealing ring and the fixed part is provided with the fixed plate is used for the fixed plate of first side of pump barrel and the fixed part has.
Still further, fixed sealing mechanism is including the fixing base, the fixing base rigid coupling in the pump cylinder, the fixing base is located the below of second solid fixed ring, be provided with the third cavity in the fixing base, fixing base through-type sliding connection has the sliding seat, the sliding seat with fixing base sealing fit, the sliding seat rigid coupling has the sliding ring, sliding ring sliding connection in the third cavity, the sliding ring with fixing base sealing fit, be provided with the second elastic component in the third cavity, the both ends of second elastic component respectively with the sliding ring with fixing base rigid coupling, the top of sliding seat is provided with fixed valve, the sliding seat with fixed valve sealing fit, the fixing base rigid coupling has symmetrical first deflector, first deflector is provided with the spout, fixed valve rigid coupling has symmetrical fixed axle, fixed axle sliding connection in adjacent in the spout of first deflector, fixed valve's fixed axle rigid coupling has the gear, first deflector with adjacent gear, the fixed valve's fixed axle has the rack meshes with the fixing base is provided with between the sand row's plunger assembly.
Further, the number of teeth of the gear and the number of teeth of the rack are respectively 2:1, and the gear is used for driving the fixed valve to turn over.
Still further, the sand removal subassembly is including the telescopic link of symmetry, the symmetry the telescopic link all inlay in the bottom of fixing base, annotate in the third cavity and have hydraulic oil, the third cavity pass through lead oil pipe with the telescopic link intercommunication, the symmetry the telescopic link's flexible end joint has the third solid fixed ring, the solid fixed ring rigid coupling of third has symmetrical seal post, the fixing base is provided with the sand removal hole of symmetry, seal post with adjacent sand removal hole sealing fit on the fixing base.
Further, the downward extrusion force of the oil liquid on the fixed valve and the sliding seat is larger than that of the symmetrical sealing columns.
Still further illustrate, still including stirring mechanism, stirring mechanism set up in the bottom of pump barrel, stirring mechanism is used for driving the sand grain in the fluid, stirring mechanism is including the backup pad, the backup pad rigid coupling in the bottom in the pump barrel, the backup pad is located the below of fixing base, backup pad sliding connection has the connecting axle, the upper end rigid coupling of connecting axle has the impeller, the impeller is located under the sliding seat, the connecting axle rotates and is connected with the limiting plate, the limiting plate of connecting axle with the rigid coupling has the third elastic component between the backup pad, the lower extreme rigid coupling of connecting axle has the stirring board of circumference distribution, the fixing base with be provided with auxiliary sedimentation subassembly between the pump barrel, auxiliary sedimentation subassembly is used for reducing the impact of fluid to the sand grain.
Still further, the auxiliary sedimentation assembly comprises a fixed pipe, the fixed pipe rigid coupling in the bottom of fixing base, the rigid coupling has the guide ring in the pump cylinder, the bottom of fixed pipe with the guide ring is located same height, the guide ring with be provided with the clearance between the bottom of fixed pipe, the limiting plate rigid coupling of connecting axle has symmetrical L shaped plate, and the symmetry jointly rigid coupling has the second sealing ring between the L shaped plate, the second sealing ring is used for right the fixed pipe with the clearance between the guide ring is sealed.
Further, an inclined surface is arranged on the outer side of the bottom of the fixed pipe, an inclined surface is arranged on the upper side of the guide ring, and the fixed pipe and the inclined surface of the guide ring are used for guiding sand grains.
Still further, still include the second deflector, the second deflector is located in the first cavity, the second deflector pass through the mounting panel with the plunger rigid coupling, the central axis of second deflector with the central axis of plunger coincides mutually, the second deflector sets up to conical, the diameter of second deflector is from down upwards diminishing gradually, the second deflector is used for guiding the sand grain that upwards flows along with fluid.
Still further, still include the guide block, the guide block rigid coupling in the upside of fixing base, the guide block is provided with symmetrical recess, the recess of guide block with the adjacent sand hole intercommunication of fixing base, the guide block is used for to falling back to the sand grain of fixing base upside is led.
The beneficial effects are that: 1. the second cover plate is matched with the first cover plate, so that the sealing state of the second cavity is changed, the second cavity is used for collecting gas, and the oil in the first cavity is used for replacing the gas in the second cavity, so that the gas in the second cavity is not extruded when the plunger moves downwards, the phenomenon that the gas occupies the space in the pump cavity to obstruct the suction and the discharge of the oil, and the pump cannot normally establish vacuum or form effective pressure difference, so that the underground oil cannot be extracted is avoided; and through the gas that gets into in the second cavity, avoid the plunger to push gas when moving downwards, cause partial part to produce the cavitation erosion.
2. When the fixed valve rotates 180 degrees, the two fixed shafts of the fixed valve are respectively contacted with the tops of the grooves of the adjacent first guide plates, the grooves of the first guide plates limit the adjacent fixed shafts on the fixed valve, meanwhile, oil flowing upwards from the fixed seat impacts the lower side of the fixed valve, the probability that the oil impacts the sealing surfaces of the fixed valve and the sliding seat is reduced, and the tightness between the sliding seat and the fixed valve is improved.
3. In the process of the upward stroke of the plunger, the accumulated sand grains can move downwards through the sand discharging holes of the fixing seat until the lower side of the fixing seat, so that the content of the sand grains between the plunger and the fixing seat is reduced.
4. The oil liquid impacts the impeller to stir the oil liquid when the upper stroke, and the sand grain is stirred and moves to the outside, and simultaneously under the drive of connecting axle, the clearance between fixed pipe and the guide ring is sealed to the second sealing ring, reduces the impact of oil liquid to piling up the sand grain to make the sand grain steady move downwards from the sand discharge hole of fixing base.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of a pump cartridge of the present invention;
FIG. 3 is a cross-sectional view of a pump barrel and plunger of the present invention;
FIG. 4 is a cross-sectional view of a plunger and a first seal ring of the present invention;
FIG. 5 is a schematic perspective view of the fixing base and the fixing valve;
FIG. 6 is a cross-sectional view of a mounting bracket of the present invention;
FIG. 7 is a cross-sectional view of the mounting base, slide base and slide ring of the present invention;
FIG. 8 is a schematic perspective view of the components of the present invention, such as gears and racks;
FIG. 9 is a side view of the telescoping rod and third retaining ring of the present invention;
FIG. 10 is a schematic perspective view of the connecting shaft and impeller of the present invention;
FIG. 11 is a cross-sectional view of the stationary tube, guide ring and second seal ring of the present invention.
Wherein: 1-pump cylinder, 2-plunger, 3-oil rod, 4-first sealing ring, 5-first cavity, 6-second cavity, 7-traveling valve, 8-fixed plate, 9-sliding column, 10-first cover plate, 11-second cover plate, 12-first elastic piece, 13-first fixed ring, 14-second fixed ring, 15-fixed seat, 16-third cavity, 17-sliding seat, 18-sliding ring, 19-second elastic piece, 20-fixed valve, 21-first guide plate, 22-gear, 23-rack, 24-telescopic rod, 25-third fixed ring, 26-sealing column, 27-supporting plate, 28-connecting shaft, 29-impeller, 30-third elastic piece, 31-stirring plate, 32-fixed tube, 33-guide ring, 34-L-shaped plate, 35-second sealing ring, 36-second guide plate, 37-guide block.
Detailed Description
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto. Through researches, the oil pump can extract gas into the oil pump during oil pumping, and the gas not only can cause cavitation in the oil pump, but also can reduce the working efficiency of the oil pump, thereby reducing the oil exploitation efficiency. In order to solve the problems existing in the existing oil pump, the oil pump is improved.
Example 1: the utility model provides an ocean oil and gas drill adopts exhaust formula oil-well pump, refer to fig. 1-8, including pump barrel 1, sliding connection has plunger 2 in pump barrel 1, plunger 2 and pump barrel 1 sealed slip, plunger 2 rigid coupling has oily pole 3, oily pole 3 is connected with the driving system on the drilling platform, driving system on the drilling platform is the beam-pumping unit, the bottom rigid coupling in plunger 2 has first sealing ring 4, first sealing ring 4 and plunger 2 sealed cooperation, plunger 2 is provided with first cavity 5, the top of plunger 2 is provided with the through-hole with first cavity 5 intercommunication, the fluid in the first cavity 5 can flow upwards through the through-hole at plunger 2 top, plunger 2 cooperates with first sealing ring 4 and forms second cavity 6, second cavity 6 is located the downside of first cavity 5, the bottom of first cavity 5 is provided with the through-hole, the through-hole at first cavity 5 bottom is used for fluid to flow, the bottom of the first cavity 5 is provided with a traveling valve 7 which is in sealing fit with a through hole at the bottom, when the plunger 2 moves downwards, the traveling valve 7 is pushed by oil liquid to lose fit with the through hole at the bottom of the first cavity 5, a blocking frame for positioning the traveling valve 7 is arranged in the first cavity 5, the blocking frame is arranged on the upper side of the traveling valve 7, two fixing plates 8 which are bilaterally symmetrical are fixedly connected in the second cavity 6, the first sealing ring 4 and the plunger 2 are respectively provided with symmetrical oil guide holes, the oil guide holes on the plunger 2 are communicated with the first cavity 5, the central lines of the oil guide holes of the plunger 2 are overlapped with the central lines of the adjacent oil guide holes of the first sealing ring 4, the fixing plates 8 are connected with sliding columns 9 in a sliding manner, the central axes of the sliding columns 9 are overlapped with the central axes of the oil guide holes of the plunger 2 and the adjacent oil guide holes of the first sealing ring 4, the sliding columns 9 penetrate through the top of the plunger 2 and are in sealing sliding fit, the sliding column 9 is slidably connected with a first cover plate 10 and a second cover plate 11, the first cover plate 10 is located in the first cavity 5, the first cavity 5 is in sealing fit with an adjacent oil guide hole on the plunger 2, the second cover plate 11 is located at the bottom of the first sealing ring 4, the second cover plate 11 is in sealing fit with an adjacent oil guide hole on the first sealing ring 4, the sliding column 9 is provided with fixed blocks limiting the first cover plate 10 and the second cover plate 11 on the sliding column 9, two fixed blocks on the sliding column 9 are located between the adjacent first cover plate 10 and the adjacent second cover plate 11, the two fixed blocks of the sliding column 9 are respectively in contact with the adjacent first cover plate 10 and the adjacent second cover plate 11, a first elastic piece 12 is fixedly connected between the first cover plate 10 and the second cover plate 11 and the adjacent fixed plate 8, the first elastic piece 12 is used for driving the adjacent first cover plate 10 and the adjacent second cover plate 11 to reset, a first fixed ring 13 and a second fixed ring 14 are fixedly connected to the inner wall of the pump cylinder 1, the first fixed ring 13 is located on the upper side of the plunger 2, the second fixed ring 14 is located on the lower side of the plunger 2, the first fixed ring 13 and the second fixed ring 14 is in symmetrical fit with the second pump cylinder 1, and the second fixed mechanism is in sealing fit with the plunger 1 in a sealing and is fixedly arranged in the plunger mechanism.
Referring to fig. 6-8, the fixed sealing mechanism comprises a fixed seat 15, the fixed seat 15 is fixedly connected in the pump cylinder 1, the fixed seat 15 is positioned below the second fixed ring 14, a third cavity 16 is arranged in the fixed seat 15, the fixed seat 15 is connected with a sliding seat 17 in a penetrating sliding manner, a sealing element is arranged between the sliding seat 17 and the fixed seat 15 and used for increasing the sealing performance between the fixed seat 15 and the sliding seat 17, the sliding seat 17 is in sealing fit with the fixed seat 15, the sliding seat 17 is fixedly connected with a sliding ring 18, the sliding ring 18 is matched with the fixed seat 15 and used for limiting the sliding seat 17, the sliding ring 18 is connected in the third cavity 16 in a sliding manner, the sliding ring 18 is in sealing fit with the fixed seat 15, a sealing element is arranged at the outer side of the sliding ring 18 and used for increasing the sealing performance between the sliding ring 18 and the fixed seat 15, a second elastic element 19 is arranged in the third cavity 16, and the second elastic element 19 is provided as a spring, the second elastic piece 19 is positioned at the lower side of the sliding ring 18, the second elastic piece 19 is sleeved on the sliding seat 17, the sliding ring 18 is contacted and matched with the top of the third cavity 16 under the elastic action of the second elastic piece 19, two ends of the second elastic piece 19 are respectively fixedly connected with the sliding ring 18 and the fixed seat 15, the top of the sliding seat 17 is provided with a fixed valve 20, the fixed valve 20 is separated from the sliding seat 17 in the process of the downward stroke of the plunger 2, the sliding seat 17 is in sealed fit with the fixed valve 20, the fixed seat 15 is fixedly connected with two symmetrical first guide plates 21, the first guide plates 21 are provided with sliding grooves, the fixed valve 20 is fixedly connected with two symmetrical fixed shafts, the fixed shafts of the fixed valve 20 are slidably connected in the sliding grooves of the adjacent first guide plates 21, the fixed valve 20 moves upwards and is far away from the sliding seat 17 after being impacted by oil, the fixed valve 20 drives the fixed shaft on the fixed valve 20 to slide upwards along the sliding groove of the adjacent first guide plate 21, the fixed shaft of the fixed valve 20 is fixedly connected with a gear 22, the first guide plate 21 is fixedly connected with a rack 23 meshed with the adjacent gear 22, the fixed seat 15 is provided with a sand discharging assembly, the sand discharging assembly is used for discharging sand grains between the fixed seat 15 and the plunger 2, the number of teeth of the gear 22 is 2:1 with the number of teeth of the rack 23, the fixed shaft of the fixed valve 20 is used for driving the fixed valve 20 to overturn, after the gear 22 rotates 180 degrees, the fixed shaft of the fixed valve 20 is contacted with the upper part of the sliding groove of the first guide plate 21, the fixed valve 20 is separated from the sliding seat 17 and then rotates 180 degrees, the fixed valve 20 moves upwards and rotates while the fixed valve 20 and the sealing surface of the sliding seat 17 are reversed to the upper side, the probability that oil impacts the sealing surface of the fixed valve 20 and the sliding seat 17 is reduced, and the tightness of the sliding seat 17 and the fixed valve 20 is increased.
Referring to fig. 7 and 9, the sand discharging assembly comprises two symmetrical telescopic rods 24, the two telescopic rods 24 are all embedded at the bottom of the fixed seat 15, the telescopic rods 24 are hydraulically driven telescopic oil rods, the telescopic rods 24 are existing devices, the internal structure of the telescopic rods is not shown in the drawing, hydraulic oil is filled in the third cavity 16, the third cavity 16 is communicated with the telescopic rods 24 through an oil guide pipe, the oil guide pipe is connected to the lower part of the adjacent telescopic rods 24, when the sliding seat 17 drives the sliding ring 18 to move downwards, the sliding ring 18 can squeeze hydraulic oil in the third cavity 16, hydraulic oil in the third cavity 16 can flow into the two telescopic rods 24, the telescopic ends of the telescopic rods 24 can shrink, the telescopic ends of the two telescopic rods 24 are fixedly connected with a third fixed ring 25 together, the third fixed ring 25 is fixedly connected with two sealing columns 26, the fixed seat 15 is provided with two symmetrical sand discharging holes, the sealing columns 26 are in sealing fit with the adjacent sand discharging holes of the fixed seat 15, in the process of downstroke of the plunger 2, the sealing columns 26 and the adjacent sand discharging holes on the fixed seat 15 are in sealing fit and state, and the fixed seat 17 receives large extrusion force of the oil downwards and receives large extrusion force of the oil downwards.
The oil pump begins to work after being installed at a designated position, wherein under the action of a ground power system, the oil rod 3 drives the plunger 2 to reciprocate along the pump barrel 1 to pump oil, and the specific working mode of the oil pump is as follows:
In the process that the oil rod 3 drives the plunger 2 and the upper part thereof to move downwards (downstroke), under the impact action of oil, the traveling valve 7 moves upwards relative to the plunger 2, the traveling valve 7 releases the sealing of the through hole at the bottom of the first cavity 5, oil enters the first cavity 5 at the moment, oil enters the first cavity 5 and flows upwards through the through hole at the top of the plunger 2, in the process, the plunger 2 drives the two sliding columns 9 to move downwards synchronously, after the lower end of the sliding column 9 is in pressing contact with the second fixed ring 14, the two sliding columns 9 stop moving downwards, and as the plunger 2 moves downwards, the limiting block positioned on the upper side of the sliding column 9 presses the adjacent first cover plate 10, so that the first cover plate 10 is separated from the plunger 2, the first elastic piece 12 between the first cover plate 10 and the adjacent fixed plate 8 is stretched, and oil flowing into the first cavity 5 flows into the second cavity 6 through the two oil guide holes on the plunger 2 (the second cover plate 11 is in a sealing state with the through hole on the first sealing ring 4).
In the process that the plunger 2 moves downwards along the pump barrel 1, the fixed valve 20 and the sliding seat 17 are in a sealing fit state, oil liquid downwards extrudes the fixed valve 20 and the sliding seat 17, the sliding seat 17 drives the sliding ring 18 to move downwards, the sliding ring 18 slides downwards along the third cavity 16, the second elastic piece 19 is completely compressed, the sliding ring 18 moves downwards, hydraulic oil in the third cavity 16 is extruded, hydraulic oil in the third cavity 16 flows into the two telescopic rods 24, the telescopic ends of the two telescopic rods 24 jointly drive the third fixed ring 25 to move upwards, the third fixed ring 25 drives the two sealing columns 26 to synchronously move upwards, the sealing columns 26 are inserted into sand discharging holes adjacent to the fixed seat 15, and at the moment, the sealing columns 26 and the sand discharging holes adjacent to the fixed seat 15 are in a sealing fit state. During the downward movement of the plunger 2, the oil between the plunger 2 and the fixing seat 15 does not flow, and since the density of sand is greater than that of the oil, the sand in the oil moves downward and thus is settled to the upper side of the fixing seat 15.
When the oil rod 3 drives the plunger 2 to move upwards along the pump cylinder 1 (up stroke), the plunger 2 starts to move upwards along the pump cylinder 1, the traveling valve 7 is contacted with the plunger 2 again to form a sealing state, the plunger 2 moves upwards, at the moment, under the action of the elastic force of the first elastic piece 12, the lower ends of the two sliding columns 9 and the second fixed ring 14 are in extrusion states, and as the plunger 2 continuously moves upwards, the plunger 2 and the two sliding columns 9 slide relatively, under the action of the elastic force of the first elastic piece 12, the first elastic piece 12 pulls the adjacent first cover plate 10 to slide along the adjacent sliding columns 9 until the first cover plate 10 is contacted with the plunger 2 again, the second cavity 6 is restored to the sealing state again, the plunger 2 continuously moves upwards, the two sliding columns 9 lose contact with the second fixed ring 14, and the two sliding columns 9 start to move upwards along with the plunger 2.
When the plunger 2 starts to move upwards, the plunger 2 and the fixed seat 15 are in a negative pressure state, the oil pressure at the lower side of the fixed seat 15 is larger than the oil pressure at the upper side of the fixed seat 15, at the moment, the oil at the lower side of the fixed seat 15 pushes the fixed valve 20 upwards, simultaneously under the elastic action of the second elastic piece 19, the sliding seat 17 and the sliding ring 18 move upwards along the fixed seat 15 to reset, then under the pressure action of the oil at the lower side of the fixed seat 15, the fixed valve 20 moves upwards and is separated from the sliding seat 17 to lose the matching, the two fixed shafts of the fixed valve 20 slide upwards along the sliding grooves of the adjacent first guide plates 21 respectively, the gear 22 is meshed with the adjacent racks 23, the fixed valve 20 moves upwards and overturns under the matching action of the gear 22 and the adjacent racks 23, after the fixed valve 20 rotates 180 DEG, the two fixed shafts of the fixed valve 20 are respectively contacted with the tops of the grooves of the adjacent first guide plates 21, the grooves of the first guide plates 21 limit the adjacent fixed shafts, meanwhile, the fixed seat 15 moves upwards and the oil impacts the lower side of the fixed valve 20, the probability that the oil impacts the sealing surface of the fixed valve 20 and the sliding seat 17 is increased, and the probability that the oil flows upwards and flows into the fixed valve 2 is increased when the fixed valve 2 moves upwards, and the plunger 2 moves.
In the process of resetting the sliding ring 18 and the sliding seat 17, hydraulic oil in the two telescopic rods 24 flows back into the third cavity 16, the telescopic ends of the telescopic rods 24 extend outwards, the telescopic ends of the two telescopic rods 24 drive the third fixed ring 25 and the upper sealing post 26 to move downwards together, the sealing post 26 loses fit with the sand discharging hole of the fixed seat 15, sand grains on the upper side of the fixed seat 15 are piled up under the action of gravity, when the upward impact force of oil is smaller than the gravity of piled up sand grains, the piled up sand grains can move downwards through the sand discharging hole of the fixed seat 15 until the lower side of the fixed seat 15, and the content of sand grains between the plunger 2 and the fixed seat 15 is reduced.
When the oil rod 3 drives the plunger 2 to move upwards, after the upper ends of the two sliding columns 9 are in extrusion contact with the first fixed ring 13, the plunger 2 and the sliding columns 9 slide upwards along with the plunger 2, the sliding columns 9 extrude adjacent second cover plates 11 through limiting blocks at the lower sides, the first elastic piece 12 between the second cover plates 11 and the fixed plates 8 is stretched, the second cover plates 11 lose contact with the first sealing rings 4, oil guide holes of the first sealing rings 4 are in a communicating state with the second cavity 6, in the process, the second cavity 6 is filled with oil, in the process of moving the plunger 2 upwards, if the oil pumped between the plunger 2 and the fixed seat 15 has gas, the gas can move upwards in the oil due to the fact that the density of the gas is smaller than that of the oil, and after the second cover plates 11 are far away from the first sealing rings 4, the oil in the second cavity 6 starts to flow downwards through the oil guide holes of the first sealing rings 4, the oil in the second cavity 6 moves upwards to the highest point, the oil in the second cavity 6 is filled with the oil, and then the gas between the second cover plates 11 and the second cavity 15 is extruded into the second cavity 6.
When the plunger 2 starts to move downwards from the highest point, the two sliding columns 9 and the plunger 2 are relatively displaced, initially, under the elastic force of the first elastic piece 12, the upper ends of the two sliding columns 9 and the first fixed ring 13 are in an extrusion state, the first elastic piece 12 pulls the adjacent second cover plate 11 to reset, the distance between the second cover plate 11 and the first sealing ring 4 gradually decreases along with the downward movement of the plunger 2, and when the upper ends of the two sliding columns 9 are separated from the first fixed ring 13, the second cover plate 11 seals the adjacent oil guide holes on the first sealing ring 4 again.
The gas enters the second cavity 6, and the gas in the second cavity 6 is not extruded when the plunger 2 moves downwards, so that the phenomenon that the gas occupies the space of the pump cavity to prevent the suction and discharge of oil liquid, so that the pump cannot normally establish vacuum or form effective pressure difference, and the underground oil liquid cannot be extracted is avoided; and by the gas entering the second cavity 6, the gas is prevented from being extruded when the plunger 2 moves downwards, so that cavitation is prevented from being generated on part of the parts. In the downward moving process of the plunger 2, the movable valve 7 loses sealing with the plunger 2 again, meanwhile, the fixed valve 20 starts to move downwards and reset under the extrusion of the upper oil, in the resetting process of the fixed valve 20, under the cooperation of the gear 22 and the adjacent rack 23, the fixed valve 20 rotates and resets until the fixed valve 20 contacts and extrudes with the sliding seat 17 again, the fixed valve 20 and the sliding seat 17 move downwards again, and the sealing post 26 loses cooperation with the sand discharge valve of the fixed seat 15 again.
When the lower ends of the two sliding columns 9 are extruded with the second fixing ring 14 again, the first cover plate 10 is away from the plunger 2 again, oil in the first cavity 5 flows into the second cavity 6 through the oil guide hole of the plunger 2, and at the moment, gas in the second cavity 6 is extruded to the first cavity 5 by the oil because the density of the oil is higher than that of the gas, the gas entering the first cavity 5 continuously moves upwards through the through hole at the top of the plunger 2, and after the process, the oil rod 3 drives the plunger 2 to reciprocate to continuously pump oil.
Example 2: on the basis of embodiment 1, refer to fig. 10 and 11, further include an agitation mechanism, the agitation mechanism is disposed at the bottom of the pump cylinder 1, the agitation mechanism is used for driving sand grains in oil, the agitation mechanism includes a supporting plate 27, the supporting plate 27 is fixedly connected at the bottom in the pump cylinder 1, the supporting plate 27 is located below the fixing base 15, the supporting plate 27 is slidably connected with a connecting shaft 28, an impeller 29 is fixedly connected at the upper end of the connecting shaft 28, in the process of the up stroke of the plunger 2, the oil flows upwards and impacts the impeller 29, the impeller 29 rotates and drives the connecting shaft 28 to slide upwards, the impeller 29 is located under the sliding base 17, the connecting shaft 28 rotates and is connected with a limiting plate, a third elastic member 30 is fixedly connected between the limiting plate of the connecting shaft 28 and the supporting plate 27, the third elastic member 30 is set as a spring, the third elastic member 30 is sleeved on the outer side of the connecting shaft 28, four circumferentially distributed agitating plates 31 are fixedly connected at the lower end of the connecting shaft 28, the stirring plates 31 agitate the sand grains in the oil, an auxiliary sedimentation assembly is disposed between the fixing base 15 and the pump cylinder 1, and the auxiliary sedimentation assembly is used for reducing impact of sand grains.
Referring to fig. 11, the auxiliary sedimentation assembly includes a fixed pipe 32, the fixed pipe 32 is fixedly connected to the bottom of the fixed seat 15, a guide ring 33 is fixedly connected in the pump cylinder 1, the bottom of the fixed pipe 32 and the guide ring 33 are located at the same height, a gap is provided between the guide ring 33 and the bottom of the fixed pipe 32, sand discharged from the fixed seat 15 enters between the fixed pipe 32 and the pump cylinder 1, two symmetrical L-shaped plates 34 are fixedly connected to a limiting plate of the connecting shaft 28, a second sealing ring 35 is fixedly connected between the two L-shaped plates 34 together, the second sealing ring 35 is used for sealing the gap between the fixed pipe 32 and the guide ring 33, when sand moves downwards along the fixed pipe 32 and the pump cylinder 1, the sand cannot be impacted by upward flowing oil, an inclined surface is provided on the outer side of the bottom of the fixed pipe 32, an inclined surface is provided on the upper side of the guide ring 33, and the inclined surfaces of the fixed pipe 32 and the guide ring 33 are both used for guiding sand, so that the sand is discharged from between the fixed pipe 32 and the pump cylinder 1.
When the plunger 2 slides upwards along the pump cylinder 1, the oil liquid on the lower side of the fixed seat 15 starts to flow, the oil liquid flowing upwards impacts the impeller 29, the impeller 29 starts to rotate under impact, the impeller 29 drives the four stirring plates 31 to stir the oil liquid through the connecting shaft 28, if the stirring plates 31 are contacted with sand grains in the stirring process, the sand grains in the oil liquid are stirred and move outwards, meanwhile, the impeller 29 is subjected to upward impact force, the impeller 29 drives the connecting shaft 28 to slide upwards, the third elastic piece 30 is compressed, the connecting shaft 28 slides upwards along the supporting plate 27, the connecting shaft 28 drives the limiting plate and the two L-shaped plates 34 below the connecting shaft to move upwards, the two L-shaped plates 34 drive the second sealing ring 35 to move upwards, the second sealing ring 35 is inserted into a gap between the fixed pipe 32 and the guide ring 33, so that the gap between the fixed pipe 32 and the guide ring 33 is sealed, the impact of the oil liquid to the accumulated sand grains is reduced, so that the sand grains smoothly move downwards from the sand discharging holes of the fixed seat 15, when the plunger 2 moves downwards, the impeller 29 is stopped to impact the impeller 29 under the elastic force of the third elastic piece 30, the connecting shaft 28 slides upwards, the L-shaped plate 28 and the two L-shaped plates 34 drive the limiting plate and the two L-shaped plates 34 to move upwards, the second sealing ring 35 moves towards the fixed pipe 33, and the gap between the fixed pipe 33 is removed, and the fixed pipe is reset, and the gap is removed, and the sand grains is steadily moves down from the sand hole is moved downwards, and moves down due to the sand hole.
Example 3: based on embodiment 2, referring to fig. 3, the sand control device further comprises a second guide plate 36, the second guide plate 36 is located in the first cavity 5, the second guide plate 36 is fixedly connected with the inner wall of the plunger 2 through a mounting plate, the second guide plate 36 is conical, the diameter of the second guide plate 36 gradually decreases from bottom to top, the central axis of the second guide plate 36 coincides with the central axis of the plunger 2, the second guide plate 36 is located right above the travelling valve 7, and the second guide plate 36 is used for guiding sand flowing upwards along with oil, so that the amount of sand flowing upwards along with the oil passes through a through hole at the top of the plunger 2 along with the oil is reduced.
Referring to fig. 5, the sand discharging device further comprises a guide block 37, wherein the guide block 37 is fixedly connected to the upper side of the fixed seat 15, the guide block 37 is provided with two symmetrical grooves, the grooves of the guide block 37 are communicated with the adjacent sand discharging holes of the fixed seat 15, and the guide block 37 is used for guiding sand falling back to the upper side of the fixed seat 15, so that sand entering between the fixed seat 15 and the plunger 2 is accumulated in the sand discharging holes of the fixed seat 15.
In the process of downward movement of the plunger 2, the oil flows upward along the plunger 2 and impacts the lower side of the second guide plate 36, at this time, the impacted oil is dispersed to the outside, and if fine sand grains exist in the oil, the oil is accumulated to the bottom of the first cavity 5 under the dispersion action of the second guide plate 36, so that the probability that the fine sand grains pass through the through holes on the upper side of the plunger 2 is reduced.
In the process of the downstroke of the plunger 2, the oil liquid between the plunger 2 and the fixed seat 15 stops flowing, sand grains between the plunger 2 and the fixed seat 15 are settled down to the inclined surface of the guide block 37 under the action of gravity, and the inclined surface of the guide block 37 is utilized to guide the sand grains, so that the sand grains are accumulated in the sand discharging holes of the fixed seat 15, and the sand grains are discharged from the upper side of the fixed seat 15 conveniently.
The technical principles of the embodiments of the present invention are described above in connection with specific embodiments. The description is only intended to explain the principles of the embodiments of the invention and should not be taken in any way as limiting the scope of the embodiments of the invention. Based on the explanations herein, those skilled in the art will recognize other embodiments of the present invention without undue burden, and those ways that are within the scope of the present invention.
Claims (8)
1. An exhaust type oil pump for an ocean oil and gas drill is characterized in that: the novel oil pump comprises a pump cylinder (1), a plunger (2) is connected in a sliding manner in the pump cylinder (1), an oil rod (3) is fixedly connected with the plunger (2), a first sealing ring (4) is fixedly connected with the bottom in the plunger (2), a first cavity (5) is arranged on the plunger (2), a through hole communicated with the first cavity (5) is formed in the top of the plunger (2), the plunger (2) and the first sealing ring (4) are matched to form a second cavity (6), a through hole is formed in the bottom of the first cavity (5), a traveling valve (7) which is in sealing fit with the through hole at the bottom of the first cavity (5) is arranged at the bottom of the first cavity (5), a symmetrical fixing plate (8) is fixedly connected in the second cavity (6), symmetrical oil guide holes are formed in the first sealing ring (4) and the plunger (2), a sliding column (9) penetrating through the plunger (2) is connected with a first cover plate (10) in a sliding manner, the sliding column (9) is connected with a second cover plate (11) in a sliding manner, the first cover plate (11) is matched with the first cover plate (5) in a sealing manner, the second cover plate (11) is positioned at the bottom of the first sealing ring (4) and is in sealing fit with an adjacent oil guide hole on the first sealing ring (4), the sliding column (9) is provided with a fixed block which is limited by the first cover plate (10) and the second cover plate (11), first elastic pieces (12) are fixedly connected between the first cover plate (10) and the second cover plate (11) and the adjacent fixed plate (8), the inner wall of the pump cylinder (1) is fixedly connected with a first fixed ring (13) and a second fixed ring (14) which are positioned at the upper side and the lower side of the plunger (2) and are in extrusion fit with the symmetrical sliding column (9), and a fixed sealing mechanism for assisting oil pumping is arranged in the pump cylinder (1);
The fixed sealing mechanism comprises a fixed seat (15), the fixed seat (15) is fixedly connected in the pump cylinder (1), the fixed seat (15) is positioned below the second fixed ring (14), a third cavity (16) is arranged in the fixed seat (15), the fixed seat (15) is connected with a sliding seat (17) in a penetrating sliding manner, the sliding seat (17) is in sealing fit with the fixed seat (15), the sliding seat (17) is fixedly connected with a sliding ring (18), the sliding ring (18) is connected in the third cavity (16) in a sliding manner, the sliding ring (18) is in sealing fit with the fixed seat (15), a second elastic piece (19) is arranged in the third cavity (16), two ends of the second elastic piece (19) are fixedly connected with the sliding ring (18) and the fixed seat (15) respectively, the top of the sliding seat (17) is provided with a fixed valve (20), the sliding seat (17) is in sealing fit with the fixed valve (20), the sliding seat (17) is fixedly connected with a first guide plate (21) which is fixedly connected with a second guide plate (21) which is fixedly connected with a fixed chute (20), the fixed shaft of the fixed valve (20) is fixedly connected with a gear (22), the first guide plate (21) is fixedly connected with a rack (23) meshed with the adjacent gear (22), the fixed seat (15) is provided with a sand discharging assembly, and the sand discharging assembly is used for discharging sand grains between the fixed seat (15) and the plunger (2);
The sand discharging assembly comprises symmetrical telescopic rods (24), the symmetrical telescopic rods (24) are embedded in the bottom of the fixed seat (15), hydraulic oil is filled in a third cavity (16), the third cavity (16) is communicated with the telescopic rods (24) through oil guide pipes, the symmetrical telescopic ends of the telescopic rods (24) are fixedly connected with third fixing rings (25) together, symmetrical sealing columns (26) are fixedly connected with the third fixing rings (25), the fixed seat (15) is provided with symmetrical sand discharging holes, and the sealing columns (26) are in sealing fit with the adjacent sand discharging holes in the fixed seat (15).
2. The marine oil and gas drill of claim 1, wherein the pump comprises a gas-discharge pump: the number of teeth of the gear (22) and the number of teeth of the rack (23) are respectively 2:1, and the gear is used for driving the fixed valve (20) to turn over.
3. The marine oil and gas drill of claim 1, wherein the pump comprises a gas-discharge pump: the downward extrusion force of the oil liquid on the fixed valve (20) and the sliding seat (17) is larger than that of the symmetrical sealing columns (26).
4. A marine oil and gas drill as claimed in claim 3, wherein: still including stirring mechanism, stirring mechanism set up in the bottom of pump cylinder (1), stirring mechanism is used for driving the sand grain in the fluid, stirring mechanism is including backup pad (27), backup pad (27) rigid coupling in the bottom in pump cylinder (1), backup pad (27) are located the below of fixing base (15), backup pad (27) sliding connection has connecting axle (28), the upper end rigid coupling of connecting axle (28) has impeller (29), impeller (29) are located under sliding seat (17), connecting axle (28) rotation is connected with the limiting plate, the limiting plate of connecting axle (28) with rigid coupling has third elastic component (30) between backup pad (27), the lower extreme rigid coupling of connecting axle (28) has stirring board (31) of circumference distribution, fixing base (15) with be provided with between pump cylinder (1) and assist sedimentation subassembly, assist sedimentation subassembly is used for reducing the impact of fluid to the sand grain.
5. The invention as defined in claim 4 wherein the marine oil and gas drill is a gas-filled pump, comprising: the auxiliary sedimentation assembly comprises a fixed pipe (32), the fixed pipe (32) is fixedly connected to the bottom of the fixed seat (15), a guide ring (33) is fixedly connected in the pump cylinder (1), the bottom of the fixed pipe (32) and the guide ring (33) are located at the same height, a gap is formed between the guide ring (33) and the bottom of the fixed pipe (32), a symmetrical L-shaped plate (34) is fixedly connected to a limiting plate of the connecting shaft (28), a second sealing ring (35) is fixedly connected between the L-shaped plates (34) in a common mode, and the second sealing ring (35) is used for sealing the gap between the fixed pipe (32) and the guide ring (33).
6. The marine oil and gas drill of claim 5, wherein the exhaust pump is: the outside of fixed pipe (32) bottom is provided with the inclined plane, the upside of guide ring (33) sets up to the inclined plane, fixed pipe (32) with the inclined plane of guide ring (33) all is used for guiding the sand grain.
7. The marine oil and gas drill of claim 1, wherein the pump comprises a gas-discharge pump: the novel oil-filled high-pressure oil pump is characterized by further comprising a second guide plate (36), wherein the second guide plate (36) is positioned in the first cavity (5), the second guide plate (36) is fixedly connected with the plunger (2) through a mounting plate, the central axis of the second guide plate (36) coincides with the central axis of the plunger (2), the second guide plate (36) is arranged into a conical shape, the diameter of the second guide plate (36) gradually decreases from bottom to top, and the second guide plate (36) is used for guiding sand grains flowing upwards along with oil.
8. The marine oil and gas drill of claim 1, wherein the pump comprises a gas-discharge pump: the sand removal device is characterized by further comprising a guide block (37), wherein the guide block (37) is fixedly connected to the upper side of the fixed seat (15), symmetrical grooves are formed in the guide block (37), the grooves of the guide block (37) are communicated with sand removal holes adjacent to the fixed seat (15), and the guide block (37) is used for guiding sand falling back to the upper side of the fixed seat (15).
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| CN202410543036.8A CN118110658B (en) | 2024-05-02 | 2024-05-02 | Exhaust type oil pump for marine oil-gas drill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410543036.8A CN118110658B (en) | 2024-05-02 | 2024-05-02 | Exhaust type oil pump for marine oil-gas drill |
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| CN118110658B true CN118110658B (en) | 2024-07-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547906Y (en) * | 2002-05-22 | 2003-04-30 | 大庆油田有限责任公司 | Movable-barrel sand-preventing oil-well pump |
| CN115370560A (en) * | 2022-10-25 | 2022-11-22 | 山东高原油气装备有限公司 | Oil-well pump with exhaust function for oil field |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO133519B1 (en) * | 2019-03-04 | 2023-07-28 | Viorel Todor | Deep-well piston pump for hydrocarbon production |
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- 2024-05-02 CN CN202410543036.8A patent/CN118110658B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547906Y (en) * | 2002-05-22 | 2003-04-30 | 大庆油田有限责任公司 | Movable-barrel sand-preventing oil-well pump |
| CN115370560A (en) * | 2022-10-25 | 2022-11-22 | 山东高原油气装备有限公司 | Oil-well pump with exhaust function for oil field |
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