CN206461467U - Sand prevention piston for submersible linear motor - Google Patents
Sand prevention piston for submersible linear motor Download PDFInfo
- Publication number
- CN206461467U CN206461467U CN201621466436.0U CN201621466436U CN206461467U CN 206461467 U CN206461467 U CN 206461467U CN 201621466436 U CN201621466436 U CN 201621466436U CN 206461467 U CN206461467 U CN 206461467U
- Authority
- CN
- China
- Prior art keywords
- piston
- rear end
- clamping screw
- disc spring
- sand control
- 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.)
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- 239000004576 sand Substances 0.000 title claims abstract description 16
- 230000002265 prevention Effects 0.000 title 1
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000007654 immersion Methods 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims 1
- 239000010779 crude oil Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000009189 diving Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 20
- 238000012856 packing Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012075 bio-oil Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a sand control piston for submersible linear motor, which comprises a front end piston and a rear end piston which are arranged in a motor shell, wherein the front end piston and the rear end piston are connected through a rotor shaft; the upper part of the rear-end piston is connected with the other end of the rotor shaft through a third piston nut and a first rear piston locking bolt which are matched with each other, the lower part of the rear-end piston is locked through a second rear piston locking bolt, and a buffer device is arranged between the free end of the second rear piston locking bolt and the lower part of the rear-end piston; sealing devices are arranged between the front end piston and the motor shell, and between the rear end piston and the motor shell. The utility model discloses play and prevent that crude oil from taking impurity to get into the inside dynamic seal effect of motor, improve oily linear electric motor life-span of diving.
Description
Technical field
The utility model belongs to industrial gas oil DP technology technical field, it is adaptable to which application oil immersion line motor drives
Dynamic reciprocating pump lifts the producing well of crude oil, and in particular to a kind of sand control piston for oil immersion line motor.
Background technology
Country's oil immersion line motor manufacturing process uses open type environment at present, that is, allow well liquid enter motor stator with
Mover gap, the effect of cooling motor can be played by so doing.But during oil immersion line motor work, electric mover drives oil pumping
Pump plunger moves reciprocatingly, due to including salt, sulfate reducing bacteria, CO in crude oil2And many corrosive deposits, crude oil such as silt
Take impurity and accelerate motor fret into motor cavity, easily cause electric motor short circuit and burn.
Utility model content
The purpose of this utility model is to provide a kind of sand control piston for oil immersion line motor, to overcome above-mentioned existing
The defect that technology is present, the utility model is as the active unit of connection mover axle upper and lower side, and playing prevents crude oil from taking impurity and entering
Enter the dynamic sealing effect of motor internal, improve the oil immersion line motor life-span.
To reach above-mentioned purpose, the utility model is adopted the following technical scheme that：
A kind of sand control piston for oil immersion line motor, including the forward bolt piston being arranged in motor housing and rear end are lived
Plug, and forward bolt piston and rear end piston connected by mover axle, the first piston spiral shell that the top of forward bolt piston passes through mutual cooperation
Female and the first secondary piston clamping screw is connected with pump rod of pumping, the second piston spiral shell that the bottom of forward bolt piston passes through mutual cooperation
Female and the second secondary piston clamping screw is connected with the upper end of mover axle；
The top of rear end piston passes through piston clamping screw after the 3rd piston unt of mutual cooperation and first and mover axle
Lower end connection, the bottom of rear end piston locks that bolt lock is tight by piston after second, and after second piston clamping screw from
Buffer unit is provided between end and the bottom of rear end piston；
Sealing device is equipped between forward bolt piston and rear end piston and motor housing.
Further, after the buffer unit includes being arranged on the disc spring of rear end piston base, and disc spring is set in second
On piston clamping screw.
Further, the bottom of disc spring is provided with after the first disc spring baffle plate, disc spring and second and set between piston clamping screw
There is the second disc spring baffle plate.
Further, cushion pad is provided with after the first disc spring baffle plate and second between the free end of piston clamping screw.
Further, the sealing device includes some lip-shaped sealed rings and the Si Te being made up of O-ring and Ge Lai circles
Envelope.
Further, be equipped between forward bolt piston and rear end piston and motor housing two lip-shaped sealed rings and two this
Spy's envelope.
Further, lip-shaped sealed ring and Si Te envelopes are alternately arranged.
Compared with prior art, the utility model has following beneficial technique effect：
The utility model is passed through by installing forward bolt piston and rear end piston additional in oil-submersible linear electric motor mover axle upper and lower ends
Forward bolt piston and rear end piston collective effect are set, can prevent crude oil from taking impurity and entering motor internal, improve motor sealing
Can, oil immersion line motor service life is extended, open type ring is used compared to current domestic oil immersion line motor manufacturing process
Border, i.e. mover axle upper and lower ends do not install dynamic sealing additional, extend the motor operation life-span.
Further, using disc spring, baffle plate and cushion pad as buffer unit relative to being welded on motor lower end before
Helical spring buffer unit on plug, it is to avoid the problem of because mover impulsive force is excessive causing spring to break, come off.
Further, sealed using lip-shaped sealed ring and Si Te as sealing combination device relative to before using single sealing
Device, improves sealing property, extends Sealing period.
Brief description of the drawings
Fig. 1 is oil immersion line motor front end sand control piston profile；
Fig. 2 is oil immersion line motor rear end sand control piston profile.
Wherein, 1, oil pumping pump rod, 2, first piston nut, 3, forward bolt piston, 4, lip-shaped sealed ring, the 5, second secondary piston
Clamping screw, 6, second piston nut, 7, mover axle, the 8, first secondary piston clamping screw, 9, motor housing, 10, O-ring, 11,
Lattice are enclosed, and 12, rear end piston；13rd, piston clamping screw after second；14th, the 3rd piston unt；15th, disc spring；16th, the first disc spring
Baffle plate；17th, cushion pad；18th, the second disc spring baffle plate；19th, piston clamping screw after first.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Such as Fig. 1 and Fig. 2, a kind of sand control piston for oil immersion line motor, including the front end being arranged in motor housing 9
Piston 3 and rear end piston 12, and forward bolt piston 3 and rear end piston 12 connected by mover axle 7, the top of forward bolt piston 3 passes through
The secondary piston clamping screw 8 of first piston nut 2 and first of mutual cooperation is connected with oil pumping pump rod 1, the bottom of forward bolt piston 3
It is connected by the secondary piston clamping screw 5 of second piston nut 6 and second of mutual cooperation with one end of mover axle 7；
After the 3rd piston unt 14 and first that the top of rear end piston 12 passes through mutual cooperation piston clamping screw 19 with
The other end connection of mover axle 7, the bottom of rear end piston 12 is locked by piston clamping screw 13 after second, and piston after second
Buffer unit is provided between the free end of clamping screw 13 and the bottom of rear end piston 12, the buffer unit is included after being arranged on
Hold the disc spring 15 of piston 12 bottom, and disc spring 15 be set in second after on piston clamping screw 13, the bottom of disc spring 15 is provided with
The disc spring baffle plate of the second disc spring baffle plate 18 first is provided with after first disc spring baffle plate 16, disc spring 15 and second between piston clamping screw 13
Cushion pad 17 is provided with after 16 and second between the free end of piston clamping screw 13；
Sealing device is equipped between forward bolt piston 3 and rear end piston 12 and motor housing 9, if the sealing device includes
Dry lip-shaped sealed ring 4 and this spy being made up of O-ring 10 and Ge Lai circles 11 seal, forward bolt piston 3 and rear end piston 12 and motor
Two lip-shaped sealed rings 4 and two this spy's envelopes are equipped between shell 9, and lip-shaped sealed ring 4 and Si Te envelopes are alternately arranged.
It is described further with reference to specific embodiment：
Fig. 1 is the forward bolt piston 3 and oil pumping pump rod 1 and motor in the indoor design of motor housing 9 of oil immersion line motor
Mover axle 7 connects profile, and the upper end of forward bolt piston 3 passes through the secondary piston clamping screw 8 of first piston nut 2 and first and oil well pump
Pull bar 1 is connected, and the lower end of forward bolt piston 3 is connected by the secondary piston clamping screw 5 of second piston nut 6 and second with mover axle 7, preceding
Hold this spy's envelope movable sealing structure equipped with two groups of lip-type packings 4 and the combination of O-ring 10 and Ge Lai circle 11 on piston 3.
Fig. 2 is the profile that is connected with mover axle 7 of rear end piston 12 in the indoor design of motor housing 9 of oil-submersible linear,
The upper end of rear end piston 12 is connected by piston clamping screw 19 after the 3rd piston unt 14 and first with mover axle 7, rear end piston
12 lower ends devise the buffer unit that disc spring 15, the first disc spring baffle plate 16, the second disc spring baffle plate 18, cushion pad 17 are combined, and pass through
Piston clamping screw 13 is fixed after second.Designing with forward bolt piston 3, equipped with two groups of lip-type packings 4 on rear end piston 12
And O-ring 10 and this spy's envelope movable sealing structure of the combination of Ge Lai circles 11.
The utility model installs forward bolt piston 3 and rear end piston 12 additional in oil-submersible linear electric motor mover axle upper and lower ends, the two
Collective effect prevent crude oil from taking impurity and entering motor internal, improve motor sealing property.Forward bolt piston 3 and rear end piston 12
Lip-type packing 4 and Si Te envelopes are provided between motor housing 9.
1. lip-type packing
Lip packing is self-tightening effect by the radial load produced by the magnitude of interference and working medium pressure of sealing lip, is made close
Sealing produces elastic deformation, blocks and spills gap, reaches sealing purpose.Conventional encapsulant has rubber, leather, polytetrafluoroethylene (PTFE)
Deng.Use that nitrile rubber makes for 0.01~0.6m/s, use that polyurethane rubber makes for 0.05~0.1m/s, using fluorine
Rubber make for 0.05~0.3m/s.
Lip-type packing is affixed on sealing pair coupled face by its lip opened.During without internal pressure, only because of the deformation of procheilon
And produce the contact of very little.In the case of sealedly, have on the every bit contacted with sealing medium and pressure medium phase
Deng normal pressure, so lip-type packing bottom will be axially compressed, lip is contacted change with sealing surface by circumferential compression
Width, while contact stress increase.When internal pressure is raised again, the distribution form and size of contact further change, lip with
Sealing surface coordinates closer, so better tightness, here it is " self-tightening " of lip-shaped ring.One lip-type packing can be effective
The high pressure for sealing 32MPa.
2. this spy seals
Si Te is sealed by the filled polytetrafluoroethylene rectangular seal ring (lattice to enclose 11) of a low friction and a caoutchouc elasticity
Body (O-ring 10) is constituted, and the sealing function in high-pressure system oil cylinder, servo-cylinder for straight reciprocating motion, is two-way work
With element, it is adaptable to the reciprocating high-pressure system of high-speed straight-line.
Lattice enclose 11 working conditions for operating pressure≤80MPa, reciprocating speed≤15m/s, operating temperature -45~200 DEG C,
Working media is petroleum base hydraulic oil, fire resistant hydraulic fluid, Environmental Safety liquid (bio oil), water etc.；Lattice enclose 11 accurate sealing properties
It is good, larger extrusion space can be allowed；Minimum startup and kinetic friction force, or even also ensure even running, nothing under the low speed
Creeping phenomenon；Wear-resistant, anti-extrusion, high temperature resistant, long lifespan；Due to the sealing structure of special shape, returned with good oil film
Oily characteristic；Dimensionally stable, is not affected by temperature.
It is by installing this spy's envelope additional in electric mover axle upper and lower ends, i.e., real using different types of sealing ring combining form
It is that the sealing ranges of instability of various sealing rings is overlapped mutually on border, mutually makes up, i.e., is existed with the method for series connection to improve mover axle
Dynamic sealing performance in reciprocatory movement.
Claims (7)
1. a kind of sand control piston for oil immersion line motor, it is characterised in that including the front end being arranged in motor housing (9)
Piston (3) and rear end piston (12), and forward bolt piston (3) and rear end piston (12) pass through mover axle (7) connection, forward bolt piston
(3) first piston nut (2) and the first secondary piston clamping screw (8) and oil pumping pump rod (1) that top passes through mutual cooperation
Be connected, the bottom of forward bolt piston (3) by the second piston nut (6) and the second secondary piston clamping screw (5) of mutual cooperation and
The upper end connection of mover axle (7)；
The top of rear end piston (12) passes through piston clamping screw (19) after the 3rd piston unt (14) of mutual cooperation and first
It is connected with the lower end of mover axle (7), the bottom of rear end piston (12) is locked by piston clamping screw (13) after second, and second
Buffer unit is provided between the free end of piston clamping screw (13) and the bottom of rear end piston (12) afterwards；
Sealing device is equipped between forward bolt piston (3) and rear end piston (12) and motor housing (9).
2. a kind of sand control piston for oil immersion line motor according to claim 1, it is characterised in that the buffering dress
Put the disc spring (15) including being arranged on rear end piston (12) bottom, and disc spring (15) be set in second after piston clamping screw (13)
On.
3. a kind of sand control piston for oil immersion line motor according to claim 2, it is characterised in that disc spring (15)
Bottom is provided with after the first disc spring baffle plate (16), disc spring (15) and second between piston clamping screw (13) to be kept off provided with the second disc spring
Plate (18).
4. a kind of sand control piston for oil immersion line motor according to claim 3, it is characterised in that the first disc spring is kept off
Cushion pad (17) is provided with after plate (16) and second between the free end of piston clamping screw (13).
5. a kind of sand control piston for oil immersion line motor according to claim 1, it is characterised in that the sealing dress
Put including some lip-shaped sealed rings (4) and enclosed by O-ring (10) and lattice this spy's envelope that (11) are constituted.
6. a kind of sand control piston for oil immersion line motor according to claim 5, it is characterised in that forward bolt piston
(3) two lip-shaped sealed rings (4) and two this spy's envelopes are equipped between rear end piston (12) and motor housing (9).
7. a kind of sand control piston for oil immersion line motor according to claim 5, it is characterised in that lip-shaped sealed ring
(4) it is alternately arranged with this spy's envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466436.0U CN206461467U (en) | 2016-12-29 | 2016-12-29 | Sand prevention piston for submersible linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466436.0U CN206461467U (en) | 2016-12-29 | 2016-12-29 | Sand prevention piston for submersible linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206461467U true CN206461467U (en) | 2017-09-01 |
Family
ID=59697826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621466436.0U Active CN206461467U (en) | 2016-12-29 | 2016-12-29 | Sand prevention piston for submersible linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206461467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | Sand prevention piston for submersible linear motor |
-
2016
- 2016-12-29 CN CN201621466436.0U patent/CN206461467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | Sand prevention piston for submersible linear motor |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |