CN117989137A - Submersible centrifugal pump for marine oil-gas drill - Google Patents
Submersible centrifugal pump for marine oil-gas drill Download PDFInfo
- Publication number
- CN117989137A CN117989137A CN202410399696.3A CN202410399696A CN117989137A CN 117989137 A CN117989137 A CN 117989137A CN 202410399696 A CN202410399696 A CN 202410399696A CN 117989137 A CN117989137 A CN 117989137A
- Authority
- CN
- China
- Prior art keywords
- sliding
- fixing
- shell
- fixedly connected
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003208 petroleum Substances 0.000 claims abstract description 49
- 230000000670 limiting effect Effects 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000001012 protector Effects 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000003129 oil well Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 15
- 230000002035 prolonged effect Effects 0.000 abstract description 9
- 230000002776 aggregation Effects 0.000 abstract description 5
- 238000004220 aggregation Methods 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 54
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 230000009471 action Effects 0.000 description 11
- 230000009189 diving Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of oil exploitation, and particularly discloses an oil-submersible centrifugal pump for an ocean oil-gas drill, which comprises an oil-submersible motor, wherein a protector is arranged on the oil-submersible motor, a first fixing shell, a second fixing shell, a third fixing shell and a multi-stage centrifugal pump are fixedly connected in sequence to the protector, the first fixing shell is provided with a liquid inlet, the second fixing shell is provided with a round hole, a rotating shaft is fixedly connected between a rotating shaft of the multi-stage centrifugal pump and an output shaft of the oil-submersible motor, a helical blade and a rotating fan blade are fixedly connected to the rotating shaft, a current-limiting sleeve is fixedly connected in the second fixing shell, and an exhaust mechanism is arranged on the current-limiting sleeve. According to the invention, the blocking of the rotation of the spiral blade to the petroleum flow is utilized to accelerate the aggregation of bubbles in petroleum, and the bubbles in petroleum are aggregated between the flow limiting sleeve and the second fixed shell by matching with the vortex formed by the stirring of the rotating fan blade and the limit of the flow limiting sleeve, so that the bubbles are reduced to enter the multistage centrifugal pump, the pumping efficiency is improved, and the service life of the multistage centrifugal pump is prolonged.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an oil submersible centrifugal pump for an ocean oil and gas drill.
Background
The oil-submersible centrifugal pump is also called an oil-submersible electric pump and consists of a multistage centrifugal device, a protector, an oil-submersible motor and the like, and is used for pumping oil in an oil field to the ground.
When extracting the oil in the oil field, because the oil in the oil field contains gas, this pumping in-process can be with a large amount of bubbles in the multistage centrifuge of drawing in, the bubble will occupy the space that multistage centrifuge carried liquid this moment, reduced its effective discharge capacity, thereby influence its pumping efficiency, gas collides rather than interior blade at multistage centrifuge simultaneously, the bubble after the collision takes place to break, broken bubble applys the impact force to multistage centrifuge interior blade, the impact force of bubble can corrode and damage multistage centrifuge's blade gradually this moment, influence its life.
In view of the above, the invention discloses a submersible centrifugal pump for a marine oil and gas drill, which is used for meeting the actual use requirement.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a submersible centrifugal pump for a marine oil and gas drill.
The invention adopts the following technical scheme: the utility model provides an ocean oil gas bores adopts oily centrifugal pump that dives, including diving oily motor, the protector is installed to diving oily motor's upside, just diving oily motor's output shaft pierces through the protector and rather than rotating and connecting, the upside rigid coupling of protector has first fixed shell, the upside rigid coupling of first fixed shell and intercommunication have the second fixed shell, the upside rigid coupling of second fixed shell and intercommunication have the third fixed shell, the upside rigid coupling of third fixed shell and intercommunication have multistage centrifugal pump, be close to on the first fixed shell one side of protector is provided with the inlet that circumference equidistance distributes, the second fixed shell is kept away from one side of first fixed shell is provided with the round hole that circumference equidistance distributes, the rigid coupling has the pivot between the axis of rotation of multistage centrifugal pump with diving oily motor, the pivot rigid coupling has helical blade and turning vane, helical vane with turning vane all is located in the first fixed shell, the rigid coupling has the restriction cover in the second fixed shell, the restriction cover is located the restriction cover, the restriction cover is located in the middle of the circumference is provided with the restriction cover is used for keeping its one-way to keep the well to be provided with the restriction mechanism that is used for keeping it to keep its well to keep to have on the circumference to keep the restriction mechanism to be placed between the centre.
More preferably, the outer edge of the helical blade is higher than the inner edge thereof, so as to drive bubbles in petroleum to gather towards the outer edge of the helical blade.
More preferably, the exhaust mechanism comprises a fixed block, the fixed block passes through the connecting rod rigid coupling in the inner wall of flow-limiting sleeve, the pivot rigid coupling has the rolling disc, the rolling disc is located the fixed block internal rotation, the rolling disc is provided with the guide way, the rigid coupling has a fixed pipe in the round hole, the rigid coupling has a fixed plate in the fixed pipe, first fixed plate slip be provided with adjacent fixed pipe sliding fit's first carriage, first carriage pierces through flow-limiting sleeve with the fixed block and with two sliding connection, just first carriage is located the guide way internal rotation of rolling disc, first carriage with first fixed plate all is provided with circumference equidistance distributed's through-hole, all be provided with the check valve in the through-hole of first carriage with the through-hole of first fixed plate.
More preferably, the supporting mechanism comprises a first fixing frame fixedly connected to the protector, the protector is slidably provided with a second sliding frame, the first fixing frame and the second sliding frame are both hinged with swing rods distributed at equal intervals in the circumferential direction, rotating blocks are hinged between the adjacent swing rods on the first fixing frame and the second sliding frame, the protector is provided with symmetrical cylindrical cavities, sliding rods fixedly connected with the second sliding frame are slidably arranged in the cylindrical cavities, one ends, far away from the adjacent sliding rods, of the cylindrical cavities are provided with one-way valves, the second sliding frame is fixedly connected with a first fixing sleeve, and the first fixing sleeve penetrates through the first fixing shell and the protector and is in sliding fit with the first fixing sleeve and is in running fit with the rotating shaft.
More preferably, a sliding block is slidably arranged in the cylindrical cavity, the sliding block is located between the adjacent one-way valve in the cylindrical cavity and the adjacent sliding rod, and a tension spring is installed between the sliding block and the adjacent sliding rod.
More preferably, the device further comprises an adjusting mechanism for adjusting the petroleum flow path, the adjusting mechanism is arranged on the second fixing shell, the adjusting mechanism comprises a fourth fixing shell, the fourth fixing shell is fixedly connected to the inner wall of one side of the second fixing shell, which is far away from the current-limiting sleeve, through a connecting rod, the fourth fixing shell is slidably provided with a first sliding shell, the diameter of the first sliding shell is between the diameter of one side, which is close to the fourth fixing shell, of the current-limiting sleeve and the inner diameter of the second fixing shell, a tension spring is arranged between the first sliding shell and the fourth fixing shell, one side, which is far away from the fourth fixing shell, is fixedly connected with a buoyancy ring through the connecting rod, and the second fixing shell is provided with a limiting ring for limiting the buoyancy ring.
More preferably, the device further comprises a negative pressure mechanism for stretching the petroleum in the sleeve under negative pressure, the negative pressure mechanism is arranged on the rotating shaft, the negative pressure mechanism comprises a first rotating sleeve, the first rotating sleeve is rotationally arranged on the rotating shaft, a symmetrical first fixing rod is fixedly connected to the side wall of the first rotating sleeve, a second fixing frame is fixedly connected in the third fixing shell, the symmetrical first fixing rod penetrates through the second fixing frame and is in sliding connection with the second fixing frame, a second fixing plate is fixedly connected to one end of the first fixing rod far away from the first rotating sleeve, the second fixing plate is in sliding fit with the third fixing shell and the rotating shaft, a second rotating sleeve is rotationally arranged on the rotating shaft, symmetrical second fixing rods are fixedly connected to the side wall of the second rotating sleeve, the symmetrical second fixing rods penetrate through the second fixing frame and the second fixing plate and are in sliding connection with the second fixing plate, the second fixing sleeve is far away from one end of the second rotating sleeve, a second guide post is fixedly connected with the second rotating sleeve, a second guide post is arranged on the second rotating sleeve, a second guide post is in sliding fit with the second rotating sleeve, a second guide post is circumferentially arranged on the second rotating sleeve, the guide post is in sliding fit with the second rotating sleeve, the guide post is circumferentially arranged on the second guide post is fixedly connected with the second rotating sleeve, the guide post is fixedly arranged on the second guide post is in sliding fit with the second rotating sleeve, the guide post is fixedly arranged on the guide post, and is fixedly arranged on the second guide post is fixedly arranged on the second rotating, and is fixedly arranged on the guide sleeve, and is fixedly and has a second guide sleeve, and is fixedly arranged. The second sliding housing is provided with a compression assembly for intermittently discharging oil between it and the third fixed housing.
More preferably, the guide grooves of the first rotating sleeve and the second rotating sleeve are all wavy closed rings, and the wave amplitude of the guide groove on the second rotating sleeve is larger than that of the guide groove of the first rotating sleeve.
More preferably, the limiting component comprises sliding plugs distributed at equal intervals in the circumferential direction, the sliding plugs distributed at equal intervals in the circumferential direction are respectively arranged in adjacent through holes on the second fixing plate in a sliding mode, the second fixing plate is provided with sliding columns which are distributed uniformly in a sliding mode, the sliding plugs are provided with blind holes which are distributed uniformly, the sliding columns are adjacent to the blind holes on the sliding plugs in a limiting mode, a third fixing rod distributed at equal intervals in the circumferential direction is fixedly connected to one side of the second fixing plate, which is close to the second sliding shell, the third fixing rod is connected with the adjacent sliding plugs in a sliding mode, a tension spring is arranged between the third fixing rod and the adjacent sliding plugs, a third fixing frame is fixedly connected to the inner side face of the second sliding shell, and a third sliding frame used for blocking all the through holes on the second sliding shell is arranged in a sliding mode, and a spring is arranged between the third sliding frame and the third fixing frame.
More preferably, the compression assembly comprises a stop collar, the stop collar is fixedly connected to one side of the second sliding shell, which is close to the second fixing plate, the stop collar is slidably provided with a sliding ring which is slidably matched with the third fixing shell, the third fixing shell is opposite to the side wall of the second fixing sleeve, exhaust holes distributed at equal intervals in the circumferential direction are formed in the side wall of the second fixing sleeve, and one-way valves are installed in the exhaust holes.
The beneficial effects are that: 1. according to the invention, the blocking of the rotation of the spiral blade to the petroleum flow is utilized to accelerate the aggregation of bubbles in petroleum, and then the bubbles in petroleum are aggregated between the flow limiting sleeve and the second fixed shell by matching with the vortex formed by the stirring of the rotating fan blade and the limit of the flow limiting sleeve, so that the bubbles are reduced to enter the multistage centrifugal pump, and the cavitation phenomenon of the multistage centrifugal pump is weakened, so that the service life of the device is prolonged;
2. The gas between the flow limiting sleeve and the second fixed shell is discharged by utilizing the reciprocating movement of the first sliding frame, so that the gas is further reduced from entering the multistage centrifugal pump;
3. the oil is utilized to impact the first fixed sleeve, the support of the swinging rod and the rotating block is continuously fastened, and the vibration of the pump body is buffered by matching with the tension spring between the sliding block and the adjacent sliding rod;
4. The movement of the first sliding shell and the buoyancy ring is utilized to change the flow path of the petroleum, and the residence time of the petroleum between the flow-limiting sleeve and the third fixed shell is prolonged, so that the aggregation efficiency of the gas is improved, the air bubbles are further reduced from entering the multistage centrifugal pump, and the protection of the device is improved;
5. The negative pressure is applied to the petroleum by utilizing the speed difference caused by the movement of the second fixed plate and the second sliding shell, so that the aggregation of tiny bubbles in the petroleum is further accelerated, and the cavitation phenomenon of the multistage centrifugal pump is weakened, thereby further prolonging the service life of the device.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of the components of the second and third mounting shells of the present invention;
FIG. 3 is a cross-sectional view of the components of the first stationary housing and the sleeve of the present invention;
FIG. 4 is a cross-sectional view of the exhaust mechanism of the present invention;
FIG. 5 is an exploded view of the components of the second housing of the present invention;
FIG. 6 is a cross-sectional view of the support mechanism of the present invention;
FIG. 7 is a cross-sectional view of an adjustment mechanism of the present invention;
FIG. 8 is a schematic perspective view of the negative pressure mechanism of the present invention;
FIG. 9 is an exploded view of the components of the negative pressure mechanism of the present invention;
FIG. 10 is a cross-sectional view of a second stationary plate and a sliding plug component of the present invention;
Fig. 11 is a cross-sectional view of a compression assembly of the present invention.
The reference numerals are:
1. The oil-immersed motor comprises an oil-immersed motor body 11, a protector 12, a first fixed shell 13, a second fixed shell 131, a round hole 14, a third fixed shell 15, a multistage centrifugal pump 16, a rotating shaft 17, helical blades 18, rotating fan blades 19 and a current-limiting sleeve;
2. The fixed block 21, the rotating disc 22, the fixed tube 23, the first fixed plate 24 and the first sliding frame;
3. the device comprises a first fixing frame 31, a second sliding frame 32, a swinging rod 33, a rotating block 34, a cylindrical cavity 35, a sliding rod 36, a first fixing sleeve 37 and a sliding block;
4. A fourth fixed shell 41, a first sliding shell 42 and a buoyancy ring;
5. the first rotating sleeve, 51, the first fixed rod, 52, the second fixed frame, 53, the second fixed plate, 54, the second rotating sleeve, 55, the second fixed rod, 56, the second sliding shell, 57 and the second fixed sleeve;
6. a sliding plug 61, a sliding column 62, a third fixed rod 7, a third fixed frame 71 and a third sliding frame;
8. Stop collar, 81, slip ring, 82, exhaust hole.
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.
Example 1: 1-3, a protector 11 is installed on the upper side of the submersible motor 1, an output shaft of the submersible motor 1 penetrates through the protector 11 and is rotationally connected with the protector 11, the protector 11 is used for separating the submersible motor 1 from oil in an oil well, the oil is prevented from entering the submersible motor 1, the submersible motor 1 is protected from corrosion of well fluid and abrasion of sand, accordingly long-term stable operation of the submersible motor 1 is guaranteed, a first fixing shell 12 is fixedly connected to the upper side of the protector 11, a second fixing shell 13 is fixedly connected and communicated with the upper side of the first fixing shell 12, a third fixing shell 14 is fixedly connected and communicated with the upper side of the third fixing shell 14, a multistage centrifugal pump 15 is fixedly connected to the upper side of the first fixing shell 12, four liquid inlets which are circumferentially and equidistantly distributed are arranged on the lower portion of the first fixing shell 12, the upper part of the second fixed shell 13 is provided with three round holes 131 which are circumferentially and equidistantly distributed, a rotating shaft 16 is fixedly connected between the rotating shaft of the multistage centrifugal pump 15 and the output shaft of the submersible motor 1, a spiral blade 17 and a rotating fan blade 18 are fixedly connected to the part of the rotating shaft 16 positioned in the first fixed shell 12, the outer side edge of the spiral blade 17 is higher than the inner side edge of the rotating shaft, the spiral blade 17 is used for driving bubbles in petroleum to gather towards the outer side edge of the spiral blade 17, the spiral blade 17 is contacted with the inner wall of the first fixed shell 12, a current-limiting sleeve 19 is fixedly connected in the second fixed shell 13, the current-limiting sleeve 19 is positioned in the middle of the three round holes 131, an exhaust mechanism is arranged on the current-limiting sleeve 19, the exhaust mechanism is used for intermittently exhausting the gathered gas between the current-limiting sleeve 19 and the second fixed shell 13, a supporting mechanism is arranged on the protector 11, the supporting mechanism is used for keeping the protector 11 and the submersible motor 1 centered in an oil well, the flow-limiting sleeve 19 and the second fixed shell 13 are matched to form an inverted annular chamber, and then the rotation of the spiral blades 17 and the rotation fan blades 18 is matched, so that a large amount of bubbles in the petroleum are gathered between the flow-limiting sleeve 19 and the second fixed shell 13, and the gas is reduced from entering the multistage centrifugal pump 15.
As shown in fig. 4 and 5, the exhaust mechanism includes a fixed block 2, the fixed block 2 is fixedly connected to the inner wall of a flow-limiting sleeve 19 through a connecting rod, a rotating disc 21 is fixedly connected to a portion of a rotating shaft 16 located in the fixed block 2, the rotating disc 21 is in running fit with the fixed block 2, the rotating disc 21 is provided with a guide groove, the guide groove is a wavy closed ring, a fixed pipe 22 is fixedly connected in a round hole 131, opposite ends of three fixed pipes 22 are fixedly connected with a first fixed plate 23, a first sliding frame 24 is slidably arranged in the middle of the first fixed plate 23, the first sliding frame 24 is composed of an L-shaped rod and a circular plate, the circular plate of the first sliding frame 24 is slidably matched with an adjacent fixed pipe 22, the L-shaped rod of the first sliding frame 24 penetrates through the flow-limiting sleeve 19 and the fixed block 2 and is slidably connected with the adjacent fixed block, the L-shaped rod of the first sliding frame 24 is located in the guide groove of the rotating disc 21, four through holes distributed circumferentially at equal intervals are formed in the circular plates of the first sliding frame 24 and the first fixed plate 23, the through holes of the first sliding frame 24 and the through holes of the first fixed plate 23 are all provided with four through holes distributed circumferentially at equal intervals, the first sliding frame 24 and the through holes of the first sliding frame 23 are all provided with a valve 21 for extending the flow-limiting sleeve 19, and further intermittently moving the air is prevented from entering a reciprocating pump 13, and is further extended, and the intermittent air pump is prevented from flowing and has a flow-passing through the air pump 13, and is further extended by the intermittent pump device.
As shown in fig. 2 and 6, the supporting mechanism comprises a first fixing frame 3, the first fixing frame 3 is fixedly connected to the upper part of the protector 11, a second sliding frame 31 is slidably arranged on the upper part of the protector 11, the second sliding frame 31 is positioned at the lower part of the first fixing frame 3, the first fixing frame 3 and the second sliding frame 31 are hinged with four swinging rods 32 which are circumferentially and equidistantly distributed, a rotating block 33 is hinged between two swinging rods 32 which are vertically adjacent together, the outer surface of the rotating block 33 is made of rubber materials and is used for improving friction force between the rotating block 33 and an oil well, two cylindrical cavities 34 which are bilaterally symmetrical are arranged on the upper part of the protector 11, the cylindrical cavities 34 are L-shaped, sliding rods 35 are slidably arranged in the cylindrical cavities 34, the sliding rods 35 are fixedly connected with the second sliding frame 31, the upper ends of the cylindrical cavities 34 are provided with one-way valves for outwards flowing media therein, the upper end of the second sliding frame 31 is fixedly connected with a first fixed sleeve 36 penetrating through the first fixed shell 12 and the protector 11 and in sliding fit with the first fixed shell and the protector, the first fixed sleeve 36 is in running fit with the rotating shaft 16, the upper end of the first fixed sleeve 36 is approximately T-shaped, the upper end of the first fixed sleeve 36 is positioned in the middle of three liquid inlets on the first fixed shell 12, a sliding block 37 is arranged in the cylinder cavity 34 in a sliding manner, the sliding block 37 is positioned between a one-way valve in the adjacent cylinder cavity 34 and the adjacent sliding rod 35, a tension spring is arranged between the sliding block 37 and the adjacent sliding rod 35, and the second sliding frame 31 is continuously stretched by utilizing the impact force of flowing petroleum to the first fixed sleeve 36 during oil pumping, so that the extrusion force between the rotating block 33 and an oil well is ensured, and the stability of the device during working is improved.
When extracting the oil in the marine oil field, operating personnel place this device in the oil pumping pipeline, the oil in the pipeline is full of first fixed shell 12, second fixed shell 13, third fixed shell 14 and multistage centrifugal pump 15 through the inlet on the first fixed shell 12 this moment, start oily motor 1 afterwards, oily motor 1 work drives multistage centrifugal pump 15 work through pivot 16, multistage centrifugal pump 15 work upwards carries its interior oil, simultaneously under the oil pumping effect of multistage centrifugal pump 15, the oil in the oil pumping pipeline is a large amount through the inlet of first fixed shell 12 entering in it.
In the process of extracting oil by the device, the rotating shaft 16 drives the spiral blades 17 and the rotating blades 18 to rotate at the same time, at the moment, the rotation of the spiral blades 17 applies downward driving force to the oil in the first fixed shell 12, namely, the rotation of the spiral blades 17 applies blocking force to the flowing oil, meanwhile, because the outer side edge of the spiral blades 17 is higher than the inner side edge of the spiral blades 17, under the driving action of the spiral blades 17, a large amount of gas in the oil is gathered towards the outer side edge of the spiral blades 17, then the gathered gas bubbles slowly flow upwards under the flowing action of the oil, then under the rotating action of the rotating blades 18, the rotating blades 18 rotate to enable the oil to form vortex in the first fixed shell 12, and because the rotating blades 18 are close to the rotating shaft 16, at the moment, the centrifugal force of the center of the vortex is large, and at the moment, the gas bubbles are subjected to buoyancy action, and move towards the outer sides of the vortex, so that a large amount of gas bubbles are gathered between the flow limiting sleeve 19 and the second fixed shell 13.
In the petroleum flowing process, the rotating shaft 16 drives the rotating disc 21 to rotate at the same time, the rotating disc 21 rotates to enable the guide grooves on the rotating disc to extrude the adjacent first sliding frames 24, the first sliding frames 24 reciprocate in the adjacent fixed pipes 22, in the process that the first sliding frames 24 are far away from the adjacent first fixed plates 23, the gas gathered between the flow limiting sleeve 19 and the second fixed shell 13 is pumped between the first sliding frames 24 and the adjacent first fixed plates 23, then the first sliding frames 24 move close to the adjacent first fixed plates 23, the gas gathered between the first sliding frames 24 is discharged to the outer side of the second fixed shell 13 from the check valve on the first sliding frames 24, and bubbles in petroleum are reduced to enter the multistage centrifugal pump 15, so that cavitation of the multistage centrifugal pump 15 is reduced, and the service life of the multistage centrifugal pump 15 is prolonged.
In the process of extracting the oil, the oil gradually enters the oil through the liquid inlet on the first fixing shell 12, then the entering oil impacts the first fixing sleeve 36, the first fixing sleeve 36 is impacted to move upwards, the first fixing sleeve 36 moves upwards to drive the second sliding frame 31 and the two sliding rods 35 to move upwards together, the second sliding frame 31 moves upwards to press the adjacent swinging rods 32 to enable the adjacent rotating blocks 33 to move to fit the inner wall of the oil pipe, the protector 11 is kept centered in the oil pipe, the sliding rods 35 move to press the adjacent sliding blocks 37 upwards through the adjacent tension springs, the sliding blocks 37 move upwards to push the liquid in the adjacent cylindrical cavities 34 to flow out of the adjacent one-way valves, when the device is vibrated by pressure change in the oil pipe, the protector 11 vibrates to enable the rotating blocks 33 on the adjacent sides to be pressed, at the moment, two swinging rods 32 connected to the rotating blocks 33 on the side swing, the corresponding swinging rods 32 swing to enable the second sliding frame 31 to drive the two sliding rods 35 to move downwards, at the moment, the sliding blocks 37 are kept in a static state (at the moment, the sliding blocks 37 cannot move downwards in the adjacent cylindrical cavities 34) under the limiting action of the check valve and hydraulic oil in the cylindrical cavities 34, at the moment, the sliding rods 35 move downwards to stretch the adjacent tension springs, so that vibration force is buffered, and the device is enabled to be positioned in the middle of the oil pipe under the action of the tension springs.
Example 2: on the basis of embodiment 1, as shown in fig. 5 and 7, the oil pump further comprises an adjusting mechanism, the adjusting mechanism is arranged on the second fixed shell 13, the adjusting mechanism is used for adjusting the flow path of oil, the adjusting mechanism comprises a fourth fixed shell 4, the fourth fixed shell 4 is fixedly connected to the inner wall of the lower side of the second fixed shell 13 through a connecting rod, a first sliding shell 41 is slidably arranged on the upper portion of the fourth fixed shell 4, a tension spring is arranged between the first sliding shell 41 and the fourth fixed shell 4, the diameter of the first sliding shell 41 is between the diameter of the lower side of the current-limiting sleeve 19 and the inner diameter of the second fixed shell 13, a buoyancy ring 42 is fixedly connected to the upper side of the first sliding shell 41 through a connecting rod, a limiting ring used for limiting the buoyancy ring 42 is arranged on the second fixed shell 13, the upper end of the first sliding shell 41 is higher than the lower end of the current-limiting sleeve 19 through the buoyancy of the flowing oil, accordingly the retention time of the oil between the current-limiting sleeve 19 and the second fixed shell 13 is prolonged, the bubbles in the oil pumping process gather between the current-limiting sleeve 19 and the second fixed shell 13 conveniently, and the protection device is improved.
After the device is placed in a petroleum pipeline, petroleum fills the first fixed shell 12, the second fixed shell 13, the third fixed shell 14 and the multistage centrifugal pump 15, at this time, under the buoyancy action of petroleum, the buoyancy ring 42 drives the first sliding shell 41 to move upwards, the first sliding shell 41 moves upwards to stretch an adjacent tension spring, after the buoyancy ring 42 moves to contact with the limiting ring on the second fixed shell 13, the upper surface of the first sliding shell 41 exceeds the lower surface of the limiting sleeve 19, during the pumping process, petroleum flows upwards through the gap between the second fixed shell 13 and the fourth fixed shell 4, then petroleum enters between the first sliding shell 41 and the second fixed shell 13, then petroleum enters between the first sliding shell 41 and the limiting sleeve 19, then petroleum enters the limiting sleeve 19, and the subsequent petroleum repeats the flow to perform pumping operation.
In the oil pumping process, under the limiting action of the fourth fixed shell 4 and the first sliding shell 41, the petroleum forms a flow path with a cross section approximately in an N shape, the retention time of the petroleum between the flow limiting sleeve 19 and the second fixed shell 13 is prolonged by the backflow in the process, bubbles in the petroleum are retained between the flow limiting sleeve 19 and the second fixed shell 13 under the buoyancy action, and the subsequent rotating disc 21 rotates to repeat the operation of exhausting the gas between the flow limiting sleeve 19 and the second fixed shell 13.
When the gas content in the petroleum entering between the second fixed shell 13 and the fourth fixed shell 4 is too much, a large amount of gas gathers between the current-limiting sleeve 19 and the second fixed shell 13 at this time, the liquid level of the petroleum between the current-limiting sleeve 19 and the second fixed shell 13 moves downwards, and the first sliding shell 41 moves downwards relative to the fourth fixed shell 4 under the action of the tension spring between the first sliding shell 41 and the fourth fixed shell 4 and the buoyancy of the buoyancy ring 42, so that the liquid level surface of the petroleum flow is always higher than the first sliding shell 41, bubbles in the petroleum are convenient to stay between the current-limiting sleeve 19 and the second fixed shell 13, and the bubbles in the petroleum are further reduced to enter the multistage centrifugal pump 15, thereby prolonging the service life of the device.
Example 3: on the basis of embodiment 2, as shown in fig. 8 and 9, the device further comprises a negative pressure mechanism, the negative pressure mechanism is arranged on the rotating shaft 16, the negative pressure mechanism is used for carrying out negative pressure stretching on petroleum in the sleeve, the negative pressure mechanism comprises a first rotating sleeve 5, the first rotating sleeve 5 is rotatably arranged on the rotating shaft 16, two symmetrical first fixing rods 51 are fixedly connected with the side wall of the first rotating sleeve 5, a second fixing frame 52 is fixedly connected in the third fixing shell 14, the two first fixing rods 51 penetrate through the second fixing frame 52 and are in sliding connection with the second fixing frame 52, the upper ends of the two first fixing rods 51 are fixedly connected with a second fixing plate 53 which is in sliding fit with the third fixing shell 14 and the rotating shaft 16, the second fixing plate 53 is positioned on the upper side of the second fixing frame 52, the rotating shaft 16 is rotatably provided with a second rotating sleeve 54, the second rotating sleeve 54 is positioned on the upper side of the first rotating sleeve 5, two symmetrical second fixing rods 55 are fixedly connected to the side wall of the second rotating sleeve 54, the two second fixing rods 55 penetrate through the second fixing frame 52 and the second fixing plate 53 and are in sliding connection with the second fixing frame 52 and the second fixing plate 53, a second sliding shell 56 is fixedly connected to the upper ends of the two second fixing rods 55, a second fixing sleeve 57 which is in sliding fit with the rotating shaft 16 is arranged on the upper portion of the second sliding shell 56 in a sliding manner, the second fixing sleeve 57 is fixedly connected with the third fixing shell 14 and is communicated with a liquid inlet of the multistage centrifugal pump 15, guide grooves are formed in the first rotating sleeve 5 and the second rotating sleeve 54, the guide grooves are in wave-shaped closed rings, wave-shaped amplitude of the guide grooves in the second rotating sleeve 54 is larger than that of the guide grooves in the first rotating sleeve 5, convex columns which are uniformly distributed are arranged on the rotating shaft 16, the guide grooves in the first rotating sleeve 5 and the guide grooves in the second rotating sleeve 54 are respectively in sliding fit with the adjacent convex columns on the rotating shaft 16, the second fixed plate 53 and the second rotating sleeve 54 are provided with four through holes distributed at equal intervals in the circumferential direction, the second fixed plate 53 is provided with a limiting component, the limiting component is used for intermittently opening and closing the through holes on the second fixed plate 53, the second sliding shell 56 is provided with a compression component, the compression component is used for intermittently discharging petroleum between the second sliding shell 56 and the third fixed shell 14, tiny bubbles in the petroleum are gathered by utilizing different reciprocating movement frequencies of the second sliding shell 56 and the second fixed plate 53, the bubbles in the petroleum are discharged secondarily, the device is further protected, and the service life of the device is prolonged.
As shown in fig. 9-11, the limiting component comprises four sliding plugs 6 distributed circumferentially and equidistantly, the four sliding plugs 6 are respectively arranged in adjacent through holes on the second fixed plate 53 in a sliding way, the sliding plugs 6 are provided with a plurality of rectangular holes distributed circumferentially and equidistantly, the second fixed plate 53 is provided with four groups of sliding columns 61 distributed circumferentially and equidistantly in a sliding way, each group of sliding columns 61 comprises four groups distributed circumferentially and equidistantly, the sliding plugs 6 are provided with four blind holes distributed uniformly, the sliding columns 61 are in limiting fit with the adjacent blind holes on the adjacent sliding plugs 6, the lower side of the second sliding shell 56 is fixedly connected with four third fixed rods 62 distributed circumferentially and equidistantly, the third fixed rods 62 are connected with the adjacent sliding plugs 6 in a sliding way, tension springs are arranged between the third fixed rods 62 and the adjacent sliding plugs 6, the inner side surface of the second sliding shell 56 is fixedly connected with a third fixing frame 7, the third fixing frame 7 is slidably provided with a third sliding frame 71, the third sliding frame 71 is used for plugging four through holes on the second sliding shell 56, four springs which are circumferentially and equidistantly distributed are arranged between the third sliding frame 71 and the third fixing frame 7, when the second sliding shell 56 moves to a limit position, the sum of the tensile forces of tension springs between all third fixing rods 62 and adjacent sliding plugs 6 is larger than the sum of limiting forces of all sliding columns 61 on the adjacent sliding plugs 6 under the action of the adjacent springs, and the four sliding plugs 6 are used for plugging the through holes on the second fixing plate 53 and the third sliding frame 71 for plugging the four through holes on the second sliding shell 56, so that the content of petroleum between the second fixing plate 53 and the second sliding shell 56 is controlled, negative pressure is conveniently applied to petroleum between the two, and the floating and aggregation of bubbles are accelerated.
As shown in fig. 9 and 11, the compression assembly comprises a stop collar 8, the stop collar 8 is fixedly connected to the lower side of the second sliding shell 56, a sliding ring 81 is slidably arranged on the outer side of the stop collar 8, a plurality of rectangular holes distributed at equal intervals in the circumferential direction are formed in the sliding ring 81, the sliding ring 81 is slidably matched with the third fixed shell 14, four exhaust holes 82 distributed at equal intervals in the circumferential direction are formed in the side wall of the upper portion of the third fixed shell 14, one-way valves for outwards flowing media in the third fixed shell 14 are arranged in the exhaust holes 82, and the secondary aggregated gas is conveniently discharged out of the third fixed shell 14 by means of movement of the sliding ring 81, so that the service life of the device is prolonged, and oil pumping efficiency is guaranteed.
In the process of extracting oil, the rotating shaft 16 rotates to repeat the oil pumping operation, in the process, under the limiting action of the second fixing frame 52 on the first fixing rod 51 and the second fixing rod 55, the first rotating sleeve 5 and the first fixing rod 51, the second rotating sleeve 54 and the second fixing rod 55 can only reciprocate up and down, at this time, the rotating shaft 16 rotates to press the guide groove on the first rotating sleeve 5 and the guide groove on the second rotating sleeve 54 through the upper protruding column thereof, the first rotating sleeve 5 drives the second fixing plate 53 to reciprocate up and down together with the part connected with the second fixing plate through the first fixing rod 51, the second rotating sleeve 54 drives the second sliding shell 56 to reciprocate up and down together with the part connected with the second fixing rod 55, and because the amplitude of the guide groove on the second rotating sleeve 54 is larger than that of the guide groove on the first rotating sleeve 5, in the process of moving up together with the first rotating sleeve 5, the second rotating sleeve 54 moves up relative to the first rotating sleeve 5, and the amplitude of the second rotating sleeve 54 moves up and the wave-shaped moving speed of the first rotating sleeve 5 is basically the same as the wave-shaped moving speed of the oil.
In the process of upward movement of the first rotating sleeve 5 and the second rotating sleeve 54, the sliding column 61 is positioned in the adjacent blind holes on the adjacent sliding plugs 6, under the action of the elastic potential energy of the springs on the sliding column 61, the sliding column 61 limits the adjacent sliding plugs 6, so that the through holes on the second fixed plate 53 are in a closed state, and in the process of upward movement of the second sliding shell 56 along the second fixed sleeve 57, the moving speed of the second sliding shell 56 is higher than the flow speed of petroleum, at the moment, the third sliding frame 71 firmly seals the through holes on the second sliding shell 56 under the limiting action of the petroleum, meanwhile, the upper part of the sliding ring 81 is tightly attached to the upper surface of the limiting sleeve 8, so that the chambers on the upper side and the lower side of the limiting sleeve 8 are in a separated state, the second sliding shell 56 drives the limiting sleeve 8 and the sliding ring 81 to move upward, and the petroleum sealed between the second sliding shell 56 and the third fixed shell 14 is pushed and compressed, so that the petroleum in the part is discharged to the outer side of the third fixed shell 14 through the one-way valve on the exhaust hole 82.
In the process of moving up the second fixing plate 53 and the second sliding housing 56 together, since the moving speed of the second sliding housing 56 is higher than that of the second fixing plate 53 at this time, the second sliding housing 56 and the third fixing rod 62 will move up relative to the second fixing plate 53 and the sliding plug 6, the third fixing rod 62 will move up relative to the sliding plug 6 to stretch the connected tension spring, the speed difference between the second sliding housing 56 and the second fixing plate 53 will gradually increase the volume of the chamber between them, so that the pressure in the chamber between them will gradually decrease to form negative pressure, tiny bubbles trapped in petroleum will expand under the negative pressure state, the expanded bubbles will quickly float up and gather between the second fixing plate 53 and the second fixing sleeve 57, and the gathered bubbles will be accumulated in a large amount at the contact point of the stop collar 8 and the sliding ring 81.
When the second fixing plate 53 and the second sliding shell 56 move to the upper limit position, the pulling force of the tension spring between all sliding plugs 6 and the adjacent third fixing rods 62 is larger than the limiting force of all sliding columns 61 on the adjacent sliding plugs 6, at this time, the sliding columns 61 release the limiting force on the adjacent sliding plugs 6, under the pulling force of the tension spring between the sliding plugs 6 and the adjacent third fixing rods 62, the sliding plugs 6 move upwards relative to the second fixing plate 53, the sliding plugs 6 release the blocking of the adjacent through holes on the second fixing plate 53, then the second fixing plate 53 and the second sliding shell 56 move downwards, at this time, under the action of the blocking of petroleum, the sliding ring 81 moves upwards relative to the limiting sleeve 8, at this time, the sliding ring 81 contacts with the limiting sleeve 8, a large amount of gas gathered between the sliding ring 81 enters between the second sliding shell 56 and the third fixing shell 14 through rectangular holes on the sliding ring 81, so that the subsequent upwards moving operation of the sliding ring 81 is convenient to be repeated, the gas between the second sliding shell 56 and the third fixing shell 14 is discharged, the working stability of the device is further improved, and the service life of the device is further prolonged.
In the process of moving down the second fixing plate 53 and the second sliding housing 56, the multistage centrifugal pump 15 keeps on keeping pumping work, so that oil continuously flows upwards, oil enters the upper side of the second fixing plate 53 through the rectangular hole on the sliding plug 6, in the process, oil simultaneously presses the third sliding frame 71 to move upwards relative to the second sliding housing 56 and compress the connected spring, the second fixing sleeve 57 moves to release the limit of the through hole on the second sliding housing 56, oil flows upwards through the through hole on the second fixing plate 53 and the through hole on the second fixing sleeve 57, the subsequent second fixing plate 53 and the second sliding housing 56 are gradually reset, the sliding plug 6 is plugged again through the adjacent through hole on the second fixing plate 53 through the third fixing rod 62 after the second sliding housing 56 is reset, at the moment, the sliding column 61 is plugged again into the adjacent blind hole on the adjacent sliding plug 6, the operation is repeated, negative pressure is carried out on the upward flowing oil, the cavitation phenomenon of the multistage centrifugal pump 15 is weakened, the protection of the device is improved, and the operation is repeated.
While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the following claims. Accordingly, the detailed description of the disclosed embodiments is intended to be illustrative only and not limiting.
Claims (10)
1. An oil-submersible centrifugal pump for a marine oil-gas drill is characterized in that: the submersible motor comprises a submersible motor (1), wherein a protector (11) is arranged on the upper side of the submersible motor (1), an output shaft of the submersible motor (1) penetrates through the protector (11) and is in rotary connection with the protector, a first fixing shell (12) is fixedly connected to the upper side of the protector (11), a second fixing shell (13) is fixedly connected and communicated with the upper side of the first fixing shell (12), a third fixing shell (14) is fixedly connected and communicated with the upper side of the second fixing shell (13), a multistage centrifugal pump (15) is fixedly connected and communicated with the upper side of the third fixing shell (14), a liquid inlet which is circumferentially and equidistantly distributed is formed in one side, close to the protector (11), of the first fixing shell (12), round holes (131) which are circumferentially and equidistantly distributed are formed in one side, of the second fixing shell (13), a rotating shaft (16) of the multistage centrifugal pump (15) is fixedly connected with the output shaft of the submersible motor (1), a rotating shaft (16) and a rotating shaft (17) are fixedly connected with a rotating sleeve (19) of the rotary sleeve (19), and the rotating sleeve (19) are fixedly connected with the rotating sleeve (19), the flow-limiting sleeve (19) is provided with an exhaust mechanism for unidirectional intermittent exhaust, and the protector (11) is provided with a supporting mechanism for keeping the protector centered in the oil well.
2. The marine oil and gas drill of claim 1, wherein the oil submersible centrifugal pump is characterized in that: the outer side edge of the spiral blade (17) is higher than the inner side edge of the spiral blade, and the spiral blade is used for driving bubbles in petroleum to gather to the outer side edge of the spiral blade (17).
3. The marine oil and gas drill of claim 1, wherein the oil submersible centrifugal pump is characterized in that: the exhaust mechanism comprises a fixed block (2), the fixed block (2) is fixedly connected to the inner wall of the current-limiting sleeve (19) through a connecting rod, a rotating disc (21) is fixedly connected to the rotating shaft (16), the rotating disc (21) is located in the fixed block (2), a guide groove is formed in the rotating disc (21), a fixed pipe (22) is fixedly connected to the inside of a round hole (131), a first fixed plate (23) is fixedly connected to the inside of the fixed pipe (22), a first sliding frame (24) which is in sliding fit with the adjacent fixed pipe (22) is arranged on the first fixed plate (23), the first sliding frame (24) penetrates through the current-limiting sleeve (19) and the fixed block (2) and is in sliding connection with the fixed block (2), the first sliding frame (24) is located in the guide groove of the rotating disc (21), through holes distributed in the circumferential direction are formed in the first sliding frame (24) and the first fixed plate (23), and the first sliding frame (24) are provided with through holes which are equidistant.
4. The marine oil and gas drill of claim 1, wherein the oil submersible centrifugal pump is characterized in that: the supporting mechanism comprises a first fixing frame (3), the first fixing frame (3) is fixedly connected to the protector (11), a second sliding frame (31) is arranged on the protector (11) in a sliding mode, swinging rods (32) distributed at equal intervals in the circumferential direction are hinged to the first fixing frame (3) and the second sliding frame (31), rotating blocks (33) are hinged to the adjacent swinging rods (32) on the first fixing frame (3) and the second sliding frame (31) jointly, symmetrical cylindrical cavities (34) are formed in the protector (11), sliding rods (35) fixedly connected with the second sliding frame (31) are arranged in the cylindrical cavities (34) in a sliding mode, one ends, far away from the adjacent sliding rods (35), of the second sliding frame (34) are provided with one-way valves, first fixing sleeves (36) are fixedly connected to the second sliding frame (31), the first fixing sleeves (36) penetrate through the first fixing shells (12) and the protector (11) and are matched with the first fixing sleeves (36) in a sliding mode, and the first fixing sleeves (36) are matched with the first fixing sleeves (16).
5. The marine oil and gas drill of claim 4, wherein the oil submersible centrifugal pump is characterized in that: the sliding block (37) is arranged in the cylindrical cavity (34) in a sliding mode, the sliding block (37) is located between a one-way valve in the cylindrical cavity (34) and the sliding rod (35), and a tension spring is arranged between the sliding block (37) and the sliding rod (35).
6. The marine oil and gas drill of claim 1, wherein the oil submersible centrifugal pump is characterized in that: still including being used for adjusting petroleum flow path's adjustment mechanism, adjustment mechanism set up in on second fixed shell (13), adjustment mechanism is including fourth fixed shell (4), fourth fixed shell (4) pass through the connecting rod rigid coupling in on the inner wall of second fixed shell (13) were kept away from flow-limiting sleeve (19) one side, fourth fixed shell (4) slip is provided with first slip shell (41), the diameter size of first slip shell (41) is between the diameter size that flow-limiting sleeve (19) is close to fourth fixed shell (4) one side with the internal diameter size of second fixed shell (13), first slip shell (41) with install the extension spring between fourth fixed shell (4), one side that first slip shell (41) was kept away from fourth fixed shell (4) has spacing ring (42) through the connecting rod rigid coupling, second fixed shell (13) are provided with and are used for the restriction buoyancy ring (42).
7. The marine oil and gas drill of claim 1, wherein the oil submersible centrifugal pump is characterized in that: the negative pressure mechanism is arranged on the rotating shaft (16), the negative pressure mechanism comprises a first rotating sleeve (5), the first rotating sleeve (5) is rotationally arranged on the rotating shaft (16), a symmetrical first fixing rod (51) is fixedly connected to the side wall of the first rotating sleeve (5), a second fixing frame (52) is fixedly connected to the inside of the third fixing shell (14), the symmetrical first fixing rod (51) penetrates through the second fixing frame (52) and is in sliding connection with the second fixing frame, a second fixing plate (53) is fixedly connected to one end, far away from the first rotating sleeve (5), of the first fixing rod (51), the second fixing plate (53) is in sliding fit with the third fixing shell (14) and the rotating shaft (16), a symmetrical second fixing rod (55) is fixedly connected to the side wall of the second rotating sleeve (54), the second fixing rod (55) penetrates through the second fixing rod (52) and is in sliding connection with the second fixing rod (55), the second sliding shell (56) is provided with a second fixed sleeve (57) fixedly connected with the third fixed shell (14) in a sliding mode, the second fixed sleeve (57) is in sliding fit with the rotating shaft (16), the third fixed shell (14) is communicated with a liquid inlet of the multistage centrifugal pump (15), the first rotating sleeve (5) and the second rotating sleeve (54) are provided with guide grooves, the rotating shaft (16) is provided with evenly distributed convex columns, the guide grooves of the first rotating sleeve (5) and the guide grooves of the second rotating sleeve (54) are respectively in sliding fit with adjacent convex columns on the rotating shaft (16), the second fixed plate (53) and the second rotating sleeve (54) are provided with through holes distributed at circumferential equal intervals, the second fixed plate (53) is provided with a limiting assembly for intermittently opening and closing the through holes, and the second sliding shell (56) is provided with a compression assembly for intermittently discharging petroleum between the second sliding sleeve (5) and the third fixed shell (14).
8. The marine oil and gas drill of claim 7, wherein the submersible centrifugal pump is characterized in that: the guide grooves of the first rotating sleeve (5) and the second rotating sleeve (54) are all wavy closed rings, and the wave amplitude of the guide groove on the second rotating sleeve (54) is larger than that of the guide groove of the first rotating sleeve (5).
9. The marine oil and gas drill of claim 7, wherein the submersible centrifugal pump is characterized in that: the limiting component comprises sliding plugs (6) distributed at equal intervals in the circumferential direction, the sliding plugs (6) distributed at equal intervals in the circumferential direction are respectively arranged in adjacent through holes on the second fixing plates (53) in a sliding mode, the second fixing plates (53) are provided with sliding columns (61) distributed evenly, the sliding plugs (6) are provided with blind holes distributed evenly, the sliding columns (61) are in limiting fit with adjacent blind holes on the sliding plugs (6), a third fixing rod (62) distributed at equal intervals in the circumferential direction is fixedly connected to one side of each second fixing plate (53) close to each second sliding shell (56), the third fixing rod (62) is connected with the adjacent sliding plugs (6) in a sliding mode, tension springs are arranged between the third fixing rods (62) and the adjacent sliding plugs (6), third fixing frames (7) are fixedly connected to the inner side faces of the second sliding shells (56), and the third fixing frames (7) are used for being used for blocking all third fixing frames (71) on the second sliding shells (56).
10. The marine oil and gas drill of claim 7, wherein the submersible centrifugal pump is characterized in that: the compression assembly comprises a limit sleeve (8), the limit sleeve (8) is fixedly connected to one side, close to the second fixing plate (53), of the second sliding shell (56), a sliding ring (81) in sliding fit with the third fixing shell (14) is arranged on the limit sleeve (8), exhaust holes (82) distributed at equal intervals in the circumferential direction are formed in the side wall, opposite to the second fixing shell (57), of the third fixing shell (14), and one-way valves are arranged in the exhaust holes (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410399696.3A CN117989137B (en) | 2024-04-03 | 2024-04-03 | Submersible centrifugal pump for marine oil-gas drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410399696.3A CN117989137B (en) | 2024-04-03 | 2024-04-03 | Submersible centrifugal pump for marine oil-gas drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117989137A true CN117989137A (en) | 2024-05-07 |
| CN117989137B CN117989137B (en) | 2024-06-18 |
Family
ID=90897771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410399696.3A Active CN117989137B (en) | 2024-04-03 | 2024-04-03 | Submersible centrifugal pump for marine oil-gas drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117989137B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB688111A (en) * | 1945-05-23 | 1953-02-25 | Miles Lowell Edwards | Improvements in or relating to liquid and gas separating devices |
| CN2148840Y (en) * | 1993-03-15 | 1993-12-08 | 辽河石油勘控局沈阳采油厂 | Protector for electric pump under oil |
| CN2667206Y (en) * | 2003-12-29 | 2004-12-29 | 盘锦三阳石油科技发展有限公司 | Screw pump complete oil producing equipment set drived by motor underwell |
| CN202250922U (en) * | 2011-09-09 | 2012-05-30 | 中国海洋石油总公司 | Submersible electric pump diversion device with pipeline anti-scale device |
| WO2016204796A1 (en) * | 2015-06-18 | 2016-12-22 | Portable Composite Structures, Inc. | Centralizer with collaborative spring force |
| CN108317091A (en) * | 2017-12-27 | 2018-07-24 | 中国石油天然气股份有限公司 | Gas-liquid separation device and separation method for submersible electric pump |
| CN114876819A (en) * | 2022-05-26 | 2022-08-09 | 杜凤修 | High-stability anti-scale submersible electric pump |
-
2024
- 2024-04-03 CN CN202410399696.3A patent/CN117989137B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB688111A (en) * | 1945-05-23 | 1953-02-25 | Miles Lowell Edwards | Improvements in or relating to liquid and gas separating devices |
| CN2148840Y (en) * | 1993-03-15 | 1993-12-08 | 辽河石油勘控局沈阳采油厂 | Protector for electric pump under oil |
| CN2667206Y (en) * | 2003-12-29 | 2004-12-29 | 盘锦三阳石油科技发展有限公司 | Screw pump complete oil producing equipment set drived by motor underwell |
| CN202250922U (en) * | 2011-09-09 | 2012-05-30 | 中国海洋石油总公司 | Submersible electric pump diversion device with pipeline anti-scale device |
| WO2016204796A1 (en) * | 2015-06-18 | 2016-12-22 | Portable Composite Structures, Inc. | Centralizer with collaborative spring force |
| CN108317091A (en) * | 2017-12-27 | 2018-07-24 | 中国石油天然气股份有限公司 | Gas-liquid separation device and separation method for submersible electric pump |
| CN114876819A (en) * | 2022-05-26 | 2022-08-09 | 杜凤修 | High-stability anti-scale submersible electric pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117989137B (en) | 2024-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11480180B2 (en) | Self-priming starting device for centrifugal pump | |
| KR101655160B1 (en) | Rotary piston pump | |
| AU772668B2 (en) | Improved pump | |
| CN116538058A (en) | A four-phase diaphragm pump | |
| CN117989137B (en) | Submersible centrifugal pump for marine oil-gas drill | |
| CN111878452A (en) | Impeller assembly for multistage submersible pump | |
| CN118208426A (en) | Energy-saving high-lift high-specific-speed mixed flow pump | |
| RU187737U1 (en) | GAS SEPARATOR-DISPERSANTER FOR SUBMERSIBLE CENTRIFUGAL ELECTRIC PUMP | |
| CN115467645B (en) | Oil-increasing device for removing blockage | |
| CN112523988B (en) | Suspension type sewage pump | |
| CN113617092B (en) | Intelligent sewage treatment device with high water recovery rate | |
| CN112343781B (en) | A self-pulverizing plunger type sewage pump | |
| CN116104464A (en) | A kind of anti-sand oil-gas separator based on centrifugal separation | |
| CN215333679U (en) | Water pump with prevent blockking up structure | |
| CN106089698B (en) | A kind of high viscous more impurity fluid media (medium) conveyings are secondary with double helix ellipse sealed engagement | |
| RU2663422C1 (en) | Submersible pumping unit | |
| WO2013187801A2 (en) | Downhole pump assembly | |
| CN118775287B (en) | Fire pump with prevent blockking up structure | |
| RU2004126781A (en) | OIL PRODUCTION METHOD AND SUBMERSIBLE PUMP INSTALLATION FOR ITS IMPLEMENTATION | |
| CN220168172U (en) | Energy-saving forced circulation axial flow pump | |
| RU2061847C1 (en) | Pulsed hydraulic borehole perforator | |
| CN210317890U (en) | Impeller structure with protection device | |
| CN221220897U (en) | Integral mechanical seal structure | |
| CN215256839U (en) | Self-suction submerged pump | |
| CN113175549A (en) | Micro-resistance check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |