CN208702356U - Electric pump recycles stiffening device - Google Patents
Electric pump recycles stiffening device Download PDFInfo
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- CN208702356U CN208702356U CN201821336693.1U CN201821336693U CN208702356U CN 208702356 U CN208702356 U CN 208702356U CN 201821336693 U CN201821336693 U CN 201821336693U CN 208702356 U CN208702356 U CN 208702356U
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- stiffening device
- recycles
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Abstract
The utility model relates to oil exploration equipment technical fields, are related to electric pump circulation stiffening device.Including interior tubing string, outer tubing string, laterally opened backwash valve and electric pump unit；During oil extraction, well liquid is entered in outer tubing string by tail pipe, then enter interior tubing string under the driving of electric pump unit again, during this process, since the annular space between electric pump unit and outer tubing string reduces, well liquid flow velocity is accelerated, and the heat that motor distributes can be walked with fast speed belt, the cooling effect for improving motor, extends the service life of electric pump unit.In reacting cycle well-flushing, flushing fluid is entered in outer tubing string by tail pipe, electric pump unit stops working at this time, the flushing fluid of entrained solid particles is entered in interior tubing string by the backwash channel (blind hole connect the channel to be formed with through-hole) of laterally opened backwash valve, it avoids flushing fluid and enters inside unit from the circulation port of electric pump unit and electric pump unit is damaged, effectively increase the service life of electric pump unit.
Description
Technical field
The utility model relates to oil exploration equipment technical fields, recycle stiffening device in particular to electric pump.
Background technique
The advantages that electric submersible pump is small with its occupied area, and maintenance is simple, and adjustable yield range is wide is offshore oil platform first choice
Artificial lift mode, due to the particularity of operation on the sea environment, the inspection pump well workover period to electric pump unit is oil well production
Therefore one important technical-economic index improves the service life of electric submersible pump, the extension well repairing and pump checking period just seems especially heavy
It wants.Simultaneously as the limitation of current electric submersible pump technology, the conventional depth of setting of marine electric pump unit is shallower, is being washed
When kill-job operation, well killing fluid can not be from the tubing string bottom cycle below electric pump unit, therefore can not be complete by the oil gas of tubing string bottom
It takes out of entirely, causes kill-job difficulty larger.In addition, the flushing fluid of entrained solids particle can pass through electric pump machine when carrying out anti-flushing well
The circulation port of group enters electric pump unit, accelerates the abrasion to electric pump unit, shortens its service life.
Therefore it provides a kind of electric pump circulation stiffening device with long service life is to be solved as those skilled in the art
Important technological problems.
Utility model content
The purpose of this utility model is to provide a kind of electric pumps to recycle stiffening device, to alleviate service life in the prior art
Short technical problem.
The utility model embodiment provides a kind of electric pump circulation stiffening device, comprising: interior tubing string, is connected to outer tubing string
The laterally opened backwash valve of said inner tube column bottom and the electric pump unit for being connected to the laterally opened backwash valve bottom；
The outer tube column sleeve is located at outside said inner tube column, forms annulus space between the two；
The laterally opened backwash valve includes current divider, ball seat, spring perforated pipe and sphere, and the current divider is opened along its axial direction
Equipped with blind hole, and the current divider radially offers the through-hole connecting with the blind hole, and the through-hole is not through described
Current divider, the blind hole are connected to by the through-hole with the annulus space；
The ball seat is connect with the current divider, and the ball seat is connected to the blind hole, the perforated pipe and the ball
Seat connection, the spring are arranged in the perforated pipe, and the sphere is between the spring and the ball seat；
The current divider is axially also installed with oil recovery hole along it, the electric pump unit by the oil recovery hole with it is described interior
Tubing string connection.
The first possible embodiment provided by the embodiment of the utility model, wherein above-mentioned interior tubing string includes that promotion is short
Section, top cap and interior pipe nipple；
The lifting sub, the top cap and the interior pipe nipple are sequentially connected, the interior pipe nipple far from the top cap one
End is connect by top connection with the current divider.
Second of possible embodiment provided by the embodiment of the utility model, wherein above-mentioned top cap outer wall is provided with outstanding
Hanging platform rank, the outer tubing string are connect by the suspension step with the top cap.
The third possible embodiment provided by the embodiment of the utility model, wherein above-mentioned top cap outer wall is along its axial direction
Offer the through slot for small flat cable to be arranged；
The small flat cable is connect with the electric pump unit.
4th kind of possible embodiment provided by the embodiment of the utility model, wherein sealing is inserted in above-mentioned through slot
Body, the seal top are provided with pressing plate, and the pressing plate bottom offers annular groove, and the annular groove is interior inserted with protection
Ring.
5th kind of possible embodiment provided by the embodiment of the utility model, wherein above-mentioned outer tubing string includes successively connecting
The back of the body cap that connects, outer pipe nipple, without coupling pipe and variable buckle connector；
The baffle ring being adapted to the suspension step is provided in the back of the body cap；
Groove is formed in the back of the body cap after the back of the body cap is connect with the outer pipe nipple, the suspension step is located at described recessed
In slot.
6th kind of possible embodiment provided by the embodiment of the utility model, wherein offer valve on above-mentioned outer pipe nipple
Hole is provided with ball-and-seat at the valve opening；
The ball-and-seat includes valve fixing sleeve, bead and bead baffle ring；
The bead baffle ring is socketed in the valve fixing sleeve, and the bead is located at the bead baffle ring to be fixed in the valve
Between set；
The bead baffle ring inner wall is installed with the half slot for ventilation, be provided in the valve fixing sleeve with it is described small
The conical surface ball seat that ball is tightly connected.
7th kind of possible embodiment provided by the embodiment of the utility model, wherein offered on above-mentioned perforated pipe more
A discharge orifice.
8th kind of possible embodiment provided by the embodiment of the utility model, wherein above-mentioned spring and the sphere it
Between be provided with fulcrum bearing；
The spring is connect by extremely stifled with the perforated pipe, and dead block up is threadedly coupled with the perforated pipe.
9th kind of possible embodiment provided by the embodiment of the utility model, wherein above-mentioned sphere uses steel ball.
The utility model has the advantages that
The utility model embodiment provides a kind of electric pump circulation stiffening device, comprising: interior tubing string, is connected to outer tubing string
The laterally opened backwash valve of inner tube column bottom and the electric pump unit for being connected to laterally opened backwash valve bottom；Outer tube column sleeve is located at interior tubing string
Outside, annulus space is formed between the two；Laterally opened backwash valve includes current divider, ball seat, spring perforated pipe and sphere, current divider edge
Its axial direction offers blind hole, and current divider radially offers the through-hole connecting with blind hole, and through-hole is not through current divider, blind
Hole is connected to by through-hole with annulus space；Ball seat is connect with current divider, and ball seat is connected to blind hole, and perforated pipe is connect with ball seat,
Spring is arranged in perforated pipe, and sphere is between spring and ball seat；Current divider is axially also installed with oil recovery hole, electric pump along it
Unit is connected to by oil recovery hole with interior tubing string.During oil extraction, well liquid is entered in outer tubing string by tail pipe, then electric pump unit again
Driving under enter interior tubing string, during this process, due between electric pump unit and outer tubing string annular space reduce, well liquid flow velocity
Accelerate, the heat that motor distributes can be walked with fast speed belt, improves the cooling effect of motor, extends the service life of electric pump unit.?
When reacting cycle well-flushing, flushing fluid is entered in outer tubing string by tail pipe, and electric pump unit stops working at this time, entrained solid particles
Flushing fluid is entered in interior tubing string by the backwash channel (blind hole connect the channel to be formed with through-hole) of laterally opened backwash valve, is avoided
Flushing fluid enters inside unit from the circulation port of electric pump unit damages electric pump unit, effectively increases making for electric pump unit
Use the service life；Meanwhile the equivalent diameter in the backwash channel (blind hole connect the channel to be formed with through-hole) of laterally opened backwash valve is much larger than
The equivalent diameter of electric pump unit circulation port meets the requirement of huge discharge anti-flushing well.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that electric pump provided by the embodiment of the utility model recycles stiffening device；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the enlarged drawing of B in Fig. 1；
Fig. 4 is the structural schematic diagram that electric pump provided by the embodiment of the utility model recycles top cap in stiffening device；
Fig. 5 is the structural schematic diagram that electric pump provided by the embodiment of the utility model recycles ball-and-seat in stiffening device；
Fig. 6 is the structural representation that electric pump provided by the embodiment of the utility model recycles laterally opened backwash valve in stiffening device
Figure.
Icon: tubing string in 100-；101- annulus space；110- lifting sub；120- top cap；121- hangs step；
122- through slot；Pipe nipple in 130-；The outer tubing string of 200-；210- back of the body cap；The outer pipe nipple of 220-；230- is without coupling pipe；240- becomes
Buckle joint；The laterally opened backwash valve of 300-；310- current divider；311- blind hole；312- through-hole；313- oil recovery hole；320- ball
Seat；330- spring；340- perforated pipe；341- discharge orifice；350- sphere；360- fulcrum bearing；370- is extremely stifled；On 380-
Connector；390- lower contact；400- electric pump unit；510- seal；520- pressing plate；530- protection ring；540- bolt；
The small flat cable of 600-；700- ball-and-seat；710- valve fixing sleeve；711- conical surface ball seat；720- bead；The small ball stopper of 730-
Ring；731- half slot；
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
With reference to shown in Fig. 1-Fig. 6:
The utility model embodiment provides a kind of electric pump circulation stiffening device, comprising: interior tubing string 100, outer tubing string 200,
The laterally opened backwash valve 300 for being connected to interior 100 bottom of tubing string and the electric pump unit 400 for being connected to laterally opened 300 bottom of backwash valve；
Outer tubing string 200 is set in outside interior tubing string 100, forms annulus space 101 between the two；Laterally opened backwash valve 300 includes current divider
310, ball seat 320,330 perforated pipe 340 of spring and sphere 350, current divider 310 offer blind hole 311, and current divider along its axial direction
310 radially offer the through-hole 312 connecting with blind hole 311, and through-hole 312, not through current divider 310, blind hole 311 passes through
Through-hole 312 is connected to annulus space 101；Ball seat 320 is connect with current divider 310, and ball seat 320 is connected to blind hole 311, perforated pipe
340 connect with ball seat 320, and spring 330 is arranged in perforated pipe 340, and sphere 350 is between spring 330 and ball seat 320；Point
Stream device 310 is axially also installed with oil recovery hole 313 along it, and electric pump unit 400 is connected to by oil recovery hole 313 with interior tubing string 100.
The utility model embodiment provides a kind of electric pump circulation stiffening device, comprising: interior tubing string 100, outer tubing string 200,
The laterally opened backwash valve 300 for being connected to interior 100 bottom of tubing string and the electric pump unit 400 for being connected to laterally opened 300 bottom of backwash valve；
Outer tubing string 200 is set in outside interior tubing string 100, forms annulus space 101 between the two；Laterally opened backwash valve 300 includes current divider
310, ball seat 320,330 perforated pipe 340 of spring and sphere 350, current divider 310 offer blind hole 311, and current divider along its axial direction
310 radially offer the through-hole 312 connecting with blind hole 311, and through-hole 312, not through current divider 310, blind hole 311 passes through
Through-hole 312 is connected to annulus space 101；Ball seat 320 is connect with current divider 310, and ball seat 320 is connected to blind hole 311, perforated pipe
340 connect with ball seat 320, and spring 330 is arranged in perforated pipe 340, and sphere 350 is between spring 330 and ball seat 320；Point
Stream device 310 is axially also installed with oil recovery hole 313 along it, and electric pump unit 400 is connected to by oil recovery hole 313 with interior tubing string 100.?
When oil recovery, well liquid is entered in outer tubing string 200 by tail pipe, then enters interior tubing string 100 under the driving of electric pump unit 400 again,
During this process, since the annular space between electric pump unit 400 and outer tubing string 200 reduces, well liquid flow velocity is accelerated, can be quick
The heat that motor distributes is taken away, the cooling effect of motor is improved, extends the service life of electric pump unit 400.In reacting cycle well-flushing
When, flushing fluid is entered in outer tubing string 200 by tail pipe, and electric pump unit 400 stops working at this time, the well-flushing of entrained solid particles
Liquid enters interior tubing string 100 by the backwash channel (blind hole 311 connect the channel formed with through-hole 312) of laterally opened backwash valve 300
It is interior, it avoids flushing fluid and enters inside unit from the circulation port of electric pump unit 400 electric pump unit 400 is damaged, effectively mention
The high service life of electric pump unit 400；Meanwhile (blind hole 311 is connect with through-hole 312 in the backwash channel of laterally opened backwash valve 300
The channel of formation) equivalent diameter be much larger than 400 circulation port of electric pump unit equivalent diameter, meet wanting for huge discharge anti-flushing well
It asks.
Specifically, the blind hole 311 and 312 engaging lug of through-hole on current divider 310 form backwash channel, in reacting cycle well-flushing
When, the flushing fluid entered in outer tubing string 200 can enter in backwash channel, with the increase that backwash liquor is hydraulic, backwash liquor meeting
Sphere 350 is driven to move, so that sphere 350 be made to separate with ball seat 320, backwash liquor is able to enter in interior tubing string 100, thus complete
It works at backwash.
In oil recovery process, well liquid enters interior tubing string 100 under the driving of electric pump unit 400, specifically, well liquid is by electricity
Laterally opened backwash valve 300 is entered after pump assembly 400, then enters inner tube from the oil recovery hole 313 in laterally opened backwash valve 300
In column 100, complete to use.Meanwhile in oil extraction operation, since the annular space between electric pump unit 400 and outer tubing string 200 subtracts
Small, well liquid flow velocity is accelerated, and the heat that motor distributes can be walked with fast speed belt, the cooling effect of motor is improved, prolongs the service life.
It should be pointed out that the axial direction of blind hole 311 is overlapped with the axis of current divider 310, the axis in multiple oil recovery holes 313 and
The axis of current divider 310 is not overlapped.
In the optinal plan of the present embodiment, interior tubing string 100 includes lifting sub 110, top cap 120 and interior pipe nipple 130；It is promoted
Pipe nipple 110, top cap 120 and interior pipe nipple 130 are sequentially connected, interior pipe nipple 130 far from top cap 120 one end by top connection 380 with
Current divider 310 connects.
Wherein, 310 upper end of current divider is connect by top connection 380 with interior tubing string 100, and lower end passes through lower contact 390 and electricity
Pump assembly 400 connects.
In the optinal plan of the present embodiment, 120 outer wall of top cap is provided with suspension step 121, and outer tubing string 200 passes through suspension platform
Rank 121 connect with top cap 120.
Specifically, 120 outer wall of top cap is provided with suspension step 121, outer tubing string 200 can be suspended on suspension step 121, from
And complete the connection of interior tubing string 100 and outer tubing string 200.
In the optinal plan of the present embodiment, 120 outer wall of top cap is offered along its axial direction for the logical of small flat cable 600 to be arranged
Slot 122, small flat cable 600 are connect with electric pump unit 400.
Wherein, it is additionally provided with through slot 122 on 120 outer wall of top cap, small flat cable 600 is provided in through slot 122.
In the optinal plan of the present embodiment, it is inserted with seal 510 in through slot 122, is provided with pressing plate at the top of seal 510
520,520 bottom of pressing plate offers annular groove, and annular groove is interior inserted with protection ring 530.
Specifically, the lower part of seal 510 is plugged in through slot 122, pressing plate 520 is set on seal 510, and close
It seals 510 two sides of body and protection ring 530 is set.
Wherein, pressing plate 520 is fixed in top cap 120 by bolt 540, can be with by adjusting the screw-in depth of bolt 540
The pressure for adjusting pressing plate 520, to guarantee the tightness of seal 510.
Wherein, 520 bottom of pressing plate offers annular groove, and protection ring 530 is arranged in a ring groove.
In the optinal plan of the present embodiment, outer tubing string 200 includes sequentially connected back of the body cap 210, outer pipe nipple 220, without box cupling
Pipe 230 and variable buckle connector 240；The baffle ring being adapted to suspension step 121 is provided in back of the body cap 210；In back of the body cap 210 and outer pipe nipple
Groove is formed after 220 connections in back of the body cap 210, suspension step 121 is located in groove.
Specifically, being provided with baffle ring in back of the body cap 210, back of the body cap 210 is set in outside top cap 120, and back of the body cap 210 with it is outer short
Groove is formed after 220 connection of section in back of the body cap 210, suspension step 121 is located in groove.
Also, 210 bottom of back of the body cap is threadedly coupled with outer pipe nipple 220, can with screwing for back of the body cap 210 and outer pipe nipple 220
Tightly suspension step 121 is fixed between back of the body cap 210 and outer pipe nipple 220, thus tubing string 100 and outer tubing string 200 in realizing
Sealing.
In the optinal plan of the present embodiment, valve opening is offered on outer pipe nipple 220, ball-and-seat 700 is provided at valve opening；Dan Liu
Valve 700 includes valve fixing sleeve 710, bead 720 and bead baffle ring 730；Bead baffle ring 730 is socketed in valve fixing sleeve 710, bead
720 are located at bead baffle ring 730 between valve fixing sleeve 710；730 inner wall of bead baffle ring is installed with the half slot for ventilation
731, the conical surface ball seat 711 being tightly connected with bead 720 is provided in valve fixing sleeve 710.
700 screw thread of ball-and-seat is arranged on the side wall of outer pipe nipple 220, and when oil recovery, ball-and-seat 700 is opened, as exhaust valve,
It is vented outwards, prevents 400 gas lock of electric pump unit；Ball-and-seat 700 is closed when anti-flushing well, liquid short circuit, ball-and-seat when avoiding well-flushing
700 quantity can be adjusted according to air content in well.
Specifically, during oil extraction, the air pressure in outer tubing string 200 can increase, need to be exhausted, at this point, bead 720 is in gas
Bead baffle ring 730 can be rolled under the action of body, guarantee that bead 720 is separated with conical surface ball seat 711, gas can pass sequentially through the conical surface
Ball seat 711 and half slot 731 are discharged.Wherein, without sealing between bead 720 and half slot 731.
In anti-flushing well, flushing fluid is filled with outside outer tubing string 200, it is solid that flushing fluid can enter valve from bead baffle ring 730
Surely in set 710, at this time under the action of flushing fluid, bead 720 can roll to conical surface ball seat 711, and under the action of hydraulic, bead
720 can firmly abut together with conical surface ball seat 711, to realize sealing.
In the optinal plan of the present embodiment, multiple discharge orifices 341 are offered on perforated pipe 340.
Specifically, multiple discharge orifices 341 are offered on perforated pipe 340, to guarantee the backwash liquor entered from backwash channel
It is able to enter in interior tubing string 100.
In the optinal plan of the present embodiment, fulcrum bearing 360 is provided between spring 330 and sphere 350；Spring 330 passes through
Dead stifled 370 connect with perforated pipe 340, and dead stifled 370 are threadedly coupled with perforated pipe 340.
Wherein, it is provided with fulcrum bearing 360 on sphere 350, facilitates the connection of sphere 350 Yu spring 330.
And sphere 350 can be made to connect with ball seat 320 under the action of spring 330, complete sealing, well when avoiding recovering the oil
Liquid leaks from there.
Meanwhile in anti-flushing well, with the raising of well-flushing hydraulic coupling, when can overcome the elastic force of spring 330, sphere 350
It can be separated with ball seat 320, so that flushing fluid flows into interior tubing string 100.
In the optinal plan of the present embodiment, sphere 350 uses steel ball.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of electric pump recycles stiffening device characterized by comprising interior tubing string, is connected to said inner tube column bottom at outer tubing string
Laterally opened backwash valve and be connected to the electric pump unit of the laterally opened backwash valve bottom；
The outer tube column sleeve is located at outside said inner tube column, forms annulus space between the two；
The laterally opened backwash valve includes current divider, ball seat, spring, perforated pipe and sphere, and the current divider is opened up along its axial direction
There is blind hole, and the current divider radially offers the through-hole connecting with the blind hole, and the through-hole is not through described point
Device is flowed, the blind hole is connected to by the through-hole with the annulus space；
The ball seat is connect with the current divider, and the ball seat is connected to the blind hole, and the perforated pipe and the ball seat connect
It connects, the spring is arranged in the perforated pipe, and the sphere is between the spring and the ball seat；
The current divider is axially also installed with oil recovery hole along it, and the electric pump unit passes through the oil recovery hole and said inner tube column
Connection.
2. electric pump according to claim 1 recycles stiffening device, which is characterized in that said inner tube column include lifting sub,
Top cap and interior pipe nipple；
The lifting sub, the top cap and the interior pipe nipple are sequentially connected, and the one end of the interior pipe nipple far from the top cap is logical
Top connection is crossed to connect with the current divider.
3. electric pump according to claim 2 recycles stiffening device, which is characterized in that the top cap outer wall is provided with suspension platform
Rank, the outer tubing string are connect by the suspension step with the top cap.
4. electric pump according to claim 3 recycles stiffening device, which is characterized in that the top cap outer wall is opened up along its axial direction
There is the through slot for small flat cable to be arranged；
The small flat cable is connect with the electric pump unit.
5. electric pump according to claim 4 recycles stiffening device, which is characterized in that it is inserted with seal in the through slot,
Pressing plate is provided at the top of the seal, the pressing plate bottom offers annular groove, and the annular groove is interior inserted with protection ring.
6. electric pump according to claim 3 recycles stiffening device, which is characterized in that the outer tubing string includes sequentially connected
Back of the body cap, outer pipe nipple, without coupling pipe and variable buckle connector；
The baffle ring being adapted to the suspension step is provided in the back of the body cap；
Groove is formed in the back of the body cap after the back of the body cap is connect with the outer pipe nipple, the suspension step is located at the groove
It is interior.
7. electric pump according to claim 6 recycles stiffening device, which is characterized in that valve opening is offered on the outer pipe nipple,
Ball-and-seat is provided at the valve opening；
The ball-and-seat includes valve fixing sleeve, bead and bead baffle ring；
The bead baffle ring is socketed in the valve fixing sleeve, the bead be located at the bead baffle ring in the valve fixing sleeve it
Between；
The bead baffle ring inner wall is installed with the half slot for ventilation, is provided in the valve fixing sleeve close with the bead
Seal the conical surface ball seat of connection.
8. electric pump according to claim 7 recycles stiffening device, which is characterized in that offer multiple let out on the perforated pipe
Discharge orifice.
9. electric pump according to claim 8 recycles stiffening device, which is characterized in that set between the spring and the sphere
It is equipped with fulcrum bearing；
The spring is connect by extremely stifled with the perforated pipe, and dead block up is threadedly coupled with the perforated pipe.
10. -9 described in any item electric pumps recycle stiffening device according to claim 1, which is characterized in that the sphere uses steel
Ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336693.1U CN208702356U (en) | 2018-08-17 | 2018-08-17 | Electric pump recycles stiffening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336693.1U CN208702356U (en) | 2018-08-17 | 2018-08-17 | Electric pump recycles stiffening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208702356U true CN208702356U (en) | 2019-04-05 |
Family
ID=65942683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821336693.1U Active CN208702356U (en) | 2018-08-17 | 2018-08-17 | Electric pump recycles stiffening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208702356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630566A (en) * | 2019-10-22 | 2019-12-31 | 东营市瑞丰石油技术发展有限责任公司 | Submersible pump canning system |
-
2018
- 2018-08-17 CN CN201821336693.1U patent/CN208702356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630566A (en) * | 2019-10-22 | 2019-12-31 | 东营市瑞丰石油技术发展有限责任公司 | Submersible pump canning system |
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