CN109386460B - The anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering - Google Patents
The anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering Download PDFInfo
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- CN109386460B CN109386460B CN201811205710.2A CN201811205710A CN109386460B CN 109386460 B CN109386460 B CN 109386460B CN 201811205710 A CN201811205710 A CN 201811205710A CN 109386460 B CN109386460 B CN 109386460B
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- tooth
- centering
- cone
- ring
- centralizer
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- 239000007788 liquid Substances 0.000 claims abstract description 75
- 210000000744 eyelid Anatomy 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 230000009977 dual effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims description 63
- 238000007789 sealing Methods 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 11
- 210000003128 head Anatomy 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 210000004534 cecum Anatomy 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 12
- 230000002265 prevention Effects 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 4
- 229920003266 Leaf® Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 230000002335 preservative effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering, are applied to down-hole pump eccentric abrasion prevention operating condition.The anti-bias mill apparatus is by centering eyelid retractor, centering ontology, bore wing locker, bore tooth-like centralizer, the tooth-like centralizer of impeller and locator composition, centering ontology carries out centering positioning according to locator and realizes support by centering eyelid retractor, the liquid of down-hole pump is sprayed according to the deflector hole of centering ontology and upper spray-hole to rod tube annular space, it bores tooth-like centralizer and the tooth-like centralizer of impeller forms the dual eccentric abrasion prevention of twin tooth type together and completes according to upper limit plate and postive stop baffle bidirectionally limited up and down, and the tooth-like centralizer of cone realizes the follow-up centering of plunger and pump barrel according to double-layer movable hydraulic fluid film, and solid particle is avoided to deposit above plunger by stirring action, cone wing locker completes cone wing formula underground according to cone wing body and quickly positions and centering ontology is lock onto centering eyelid retractor, thus avoid down-hole pump that eccentric wear occurs.
Description
Technical field
The present invention relates to the devices of a kind of oil/gas well and unconventional gas well down-hole pump eccentric abrasion prevention, adopt more particularly to one kind
With the anti-bias mill apparatus of down-hole pump follow-up centering of twin tooth type eccentric abrasion prevention technology and cone wing formula location technology.
Background technique
Asking for eccentric wear between plunger and pump barrel can occur in suction operational process for oil/gas well and unconventional gas well down-hole pump
Topic, prevent at present eccentric wear major measure be using oil pipe or casing stabbing board, and between underground pump plunger and pump barrel partially
The research for grinding dedicated eccentric abrasion prevention equipment is then less, and common oil pipe or casing stabbing board can be divided into elastic centralizer and rigidity and help
Two class of positive device.
Elastic centralizer is designed according to spring principle, specifically includes that the arcuate resilient centralizer of 1) welding, bullet
Reed is welded on hoop, and weld, which is easy cracking, to be led to whole destroy of centralizer and lose original righting performance.2) spiral shell
Elastic centralizer is revolved, coil type spring item is welded on hoop, and the integral strength of the centralizer is than straight bar-type elastic righting
The integral strength of device is lower.3) bow spring centralizer of welding, basic building block can be split, and be readily transported and live
Assembling also facilitate, however the disadvantage is that the frictional resistance gone into the well it is larger and be unfavorable for down-hole string rotation.4) double arcuate resilients are helped
Positive device, sets that there are two bow-shaped structurals, and the intermediate point of double arcuate bombing leafs smaller bullet at a distance from tube wall on single righting strip
Property deformation just it is smaller, simultaneous rigid deformation is bigger.
Rigid centralizer is widely used in extended reach directional well and horizontal well, specifically includes that 1) semi-rigid centralizer,
Spring leaf is relatively flat and rigidity is larger, and intermediate hoop plays positioning action and allows centralizer one section mobile on down-hole string
Distance.2) spiral rigid centralizer, righting strip is usually the six roots of sensation and uniform welding on hoop, between the centralizer and tube wall
Contact area is larger, is easy to scrape tube wall.3) welding rigid centralizer, it is using rigid righting strip, the length of the centralizer
It is larger, it is easy that hard card phenomenon occurs in the bending section of down-hole string.4) roller rigid centralizer is pacified on its each righting strip
It is promoted equipped with two to three rollers, and in inclined shaft with large displacement, however the roller on the centralizer centering edge is more, sets
Meter and processing are more complicated, and corresponding expense is more.
Summary of the invention
In order to effectively solve the problems, such as the eccentric wear of oil/gas well and unconventional gas well down-hole pump and overcome existing eccentric abrasion prevention equipment and
Defect and deficiency existing for technology, the object of the present invention is to provide a kind of twin tooth type follow-up centering of down-hole pump eccentric abrasion prevention is anti-bias
Mill apparatus.Twin tooth type dual eccentric abrasion prevention of the anti-bias mill apparatus according to the tooth-like centralizer of cone and the tooth-like centralizer composition of impeller, and
It is quickly positioned in conjunction with the cone wing formula underground of cone wing locker, realizes the follow-up centering of underground pump plunger and pump barrel matching part, and
Down-hole pump generation eccentric wear and solid particle is avoided to deposit above plunger.
It is anti-that the technical solution adopted by the present invention to solve the technical problems is to provide a kind of twin tooth type down-hole pump follow-up centering
Eccentric wearing device, the anti-bias mill apparatus is mainly by centering eyelid retractor, centering ontology, cone wing locker, the tooth-like centralizer of cone, impeller tooth
Formula centralizer and locator composition.The anti-bias mill apparatus integrally uses axis to claim formula structure of tube body, it passes through the branch of centering eyelid retractor
Support box cupling is connected to the bottom of pumping pipe string, and the top of down-hole pump pump barrel is connected to via the support tube of centering eyelid retractor, and pump
Bar sequentially passes through centering ontology, the tooth-like centralizer of cone and the tooth-like centralizer of impeller and is linked together with the plunger of down-hole pump, centering
Sequentially coaxially the heart is arranged from inside to outside for ontology, locator and centering eyelid retractor, and locator and the cone same radial position of wing locker
Concentric arrangement, centering ontology are placed in centering eyelid retractor and realize axially position via cone wing locker and support snap ring, bore tooth
Formula centralizer and the tooth-like centralizer merging centering ontology of impeller are simultaneously realized bidirectionally limited via upper limit plate and postive stop baffle.
Centering eyelid retractor uses long cylinder, realizes the company between the support and pumping pipe string and down-hole pump of centering ontology
It connects, it includes support box cupling, support tube and support snap ring.
Support box cupling by cone seal pipe screw thread on connect pumping pipe string and under connect support tube, support in the ring cavity of box cupling
Cone cell capture surface and column snap ring face are from top to bottom set gradually in the middle part of wall, supports the cone cell capture surface of box cupling using inverted cone
Face, and the small end disc diameter of the cone cell capture surface place rounding conical surface of box cupling is supported to be equal to cylindrical surface where its column snap ring face
Diameter；It supports the column snap ring face of box cupling to realize the axially position of support snap ring, and supports the column snap ring face place of box cupling
The diameter on cylindrical surface is greater than the outer diameter of centering snap ring.
The lower end of support tube seals pipe screw thread by cone and is connected with down-hole pump, the ring cavity inner wall of support tube by upper and
Under set gradually column clip and cone cell snap ring, the column clip of support tube is matched with support snap ring, and realizes support snap ring
Axial restraint, the cone cell snap ring of support tube uses the rounding conical surface, and the cone cell of the cone cell snap ring of support tube and support box cupling is caught
It catches face while being matched with the postive stop baffle of locator, and realize that the underground between centering ontology and locator and centering eyelid retractor is fast
Speed captures.
Snap ring is supported to use thick-wall cylinder, internal diameter is greater than the outer diameter at centering cylinder shaft shoulder position, and supports the ring cavity of snap ring
Upper inside wall is equipped with cone cell clip, supports the cone cell clip of snap ring to match with the cone cell snap ring of centering snap ring, and realize centering
The axially position of ontology.
Centering ontology realizes the upper limit for boring tooth-like centralizer and the tooth-like centralizer of impeller by upper limit plate, and foundation is led
Liquid injection in down-hole pump to rod tube annular space is avoided solid particle from depositing above plunger by discharge orifice and upper spray-hole,
It includes centering box, upper limit plate, centering snap ring and centering cylinder.
Centering box uses box body, and ring cavity inner wall sets gradually column clip, deflector hole, upper spray-hole and column from bottom to top
Shape eyelet, the column clip of centering box realize the axial restraint of centering snap ring, what the deflector hole use of centering box was evenly distributed
Streamlined duct, the runner that the upper spray-hole of centering box is combined using the post holes and taper hole that are evenly distributed, and upper spray-hole
Runner in it is thick outer thin, thus the liquid in centering box via injection after deflector hole and the speed-raising of upper spray-hole to rod tube annular space, it is right
The cylindricality eyelet of middle box is located at the central part of centering box and is gap-matched between the outer ring surface of sucker rod.
Centering snap ring use short tube body, precision-fit between ring cavity inner wall and the outer ring surface of centering cylinder and constitute cylinder shifting
Dynamic pair, the outer ring surface lower part of centering snap ring from top to bottom sets gradually cone cell snap ring and column slide surface, the cone cell of centering snap ring
The taper of the conical surface where the taper of the conical surface where snap ring is equal to the cone cell clip of support snap ring, the column slide surface of centering snap ring with
It supports precision-fit between the ring cavity inner wall of snap ring and constitutes cylinder prismatic pair.
Upper limit plate uses plate-like steel plate, and central part is drilled with limit hole, and the limit hole of upper limit plate is by circular aperture
It is composed with taper eyelet, the edge of upper limit plate is distributed along the circumference with column runner, and the liquid in centering cylinder is via the upper limit
The column runner of position plate enters centering box.
Centering cylinder uses long cylinder, and the upper end is connected by pipe screw thread with centering box, and the shaft shoulder is arranged in the top of centering cylinder
And realize the axial restraint of centering snap ring；The middle and lower part of centering cylinder realizes the axial restraint of cone wing locker by pipe screw thread, together
When centering cylinder lower end be connected with postive stop baffle by pipe screw thread, realize the axial restraint of locator.
The follow-up centering that tooth-like centralizer realizes underground pump plunger and pump barrel matching part according to double-layer movable hydraulic fluid film is bored, and
Solid particle is avoided to deposit above plunger by stirring action, it includes cone tooth set and cone tooth matrix.
Cone tooth matrix is from top to bottom successively arranged position-limited hoop, back of tooth cone, addendum cone and drainage body, and it is whole thus to bore tooth matrix
It is V-shaped, and it is axially formed wedge-shaped annular space in middle cylinder, then the liquid in centering cylinder produces on the outer ring surface of cone tooth matrix
Lively hydraulic fluid film, disengages the matching part between plunger and pump barrel；Bore the limit of the position-limited hoop and upper limit plate of tooth matrix
Hole matches, and realizes the upper limit for boring tooth-like centralizer；The back of tooth cone for boring tooth matrix uses circular conical surface, thereon arrangement cone tooth set
Epicone tooth, and liquid in centering cylinder is avoided to be vortexed via being formed after cone tooth set；The addendum cone for boring tooth matrix uses inverted cone
Face, the lower cone tooth of arrangement cone tooth set, bores tooth set so that the liquid after formation dynamic pressure liquid film is smoothly guided to thereon；Bore tooth matrix
Drainage body use semiellipse sphere, bore the cross section of the semiellipse sphere of tooth matrix in circular ring shape and its cross-sectional area be along oil pumping
Bar is axially gradually reduced from top to bottom, and the drainage body for thus boring tooth matrix is in the shape of class bullet-type, and being used to will be in centering cylinder
Liquid be smoothly drained to cone tooth matrix addendum cone.
Cone tooth set is made of epicone tooth and lower cone tooth, and the lower cone tooth tooth trace of cone tooth set is where the addendum cone of cone tooth matrix
The helix of rounding conical surface expansion, the lower cone tooth of cone tooth set includes the preceding flank of tooth and coast side of tooth, and the preceding flank of tooth for boring tooth set uses
Concave surface and its coast side of tooth then uses convex surface, while bore tooth set lower cone tooth gradually increase by zero in the tooth height along its trace direction
Greatly, so that the lower cone gear form forming V-shape tapered sleeve being evenly distributed.In the down stroke of down-hole pump, tooth set is bored relative to sucker rod
Make upward slide and rotate compound motion, bore tooth matrix dynamic pressure liquid film outside liquid on the conical surface where V-arrangement tapered sleeve again
Dynamic pressure liquid film is generated, the dynamic pressure liquid film of the dynamic pressure liquid film and cone tooth set of boring tooth matrix is superimposed from inside to outside and forms bilayer
Dynamic pressure liquid film realizes the follow-up centering of plunger and pump barrel matching part.In addition, the cone tooth for making sliding and rotary composite movement covers not
Liquid in disconnected stirring centering cylinder avoids so that the solid particles such as coal grain and sand grains entrained in liquid be prevented to generate sedimentation
Solid particle deposits in middle cylinder and above plunger.
The tooth-like centralizer of impeller forms the dual eccentric abrasion prevention of twin tooth type together with the tooth-like centralizer of cone, it includes impeller tooth and wheel
Tooth matrix.Gear teeth matrix is from top to bottom successively arranged wheel back cone, baffle and wheel addendum cone, the gear teeth matrix of the tooth-like centralizer of impeller
The cone tooth substrate ring cavity wall of ring cavity inner wall and the tooth-like centralizer of cone while precision-fit and structure between the outer ring surface of sucker rod
At cylinder prismatic pair；The wheel back cone of gear teeth matrix uses circular conical surface, avoids liquid in centering cylinder via forming whirlpool after impeller tooth
Stream, the baffle of gear teeth matrix are used to smoothly be guided to the wheel back cone of gear teeth matrix, gear teeth matrix via the liquid of impeller tooth
Wheel addendum cone use the rounding conical surface, for the liquid in centering cylinder is smoothly drained to impeller tooth, and the wheel addendum cone of gear teeth matrix
The taper of the place rounding conical surface is less than the taper of circular conical surface where it takes turns back cone.
Impeller tooth is formed by gear teeth matrix cutting, and the cut surface of impeller tooth is circumferentially evenly arranged and in its each cut surface
The axis keeping parallelism of heart line and gear teeth matrix, the cut surface of impeller tooth by a quarter cylindrical surface and two plane combinations and
At, liquid communication duct is thus formed between the backlash of impeller tooth, the liquid communication duct middle part arrangement evagination of impeller tooth
A plane, impeller tooth liquid flow through-hole is respectively arranged in the two sides of a quarter cylindrical surface and its liquid communication duct radially position
The plane of road two sides intersects vertically placement simultaneously while keeping tangent with a quarter cylindrical surface, so that the liquid flow through-hole of impeller tooth
Road axially shows class arch along sucker rod, and the crest top land of impeller tooth is on same cylindrical surface, and the crest top land institute of impeller tooth
It is gap-matched between cylindrical surface and ring cavity inner wall to middle cylinder, thereby guarantees that the preliminary right of underground pump plunger and pump barrel
In.
Cone wing locker realizes that boring wing formula underground quickly positions and centering ontology is lock onto centering support according to cone wing body
In device, it includes cone wing body and end nut.
Cone wing body is composed of cone cylinder and column casing, is bored the column casing vehicle standard pipe thread of wing body and is connected with centering cylinder, bores wing
The inside and outside anchor ring of body cone cylinder is all made of the rounding conical surface, while the small end disc for boring the inner ring surface place rounding conical surface of wing body cone cylinder is straight
Diameter is greater than the outer diameter of centering cylinder, and the big end disc diameter of the rounding conical surface is less than the interior of support tube where boring the outer ring surface of wing body cone cylinder
Diameter and its small end disc diameter are less than the internal diameter of support snap ring.The cone cylinder of cone wing body circumferentially cuts and forms Reed type cone
Wing, the Reed type cone wing of cone wing body wall slip along the ring cavity of support snap ring, then supports cone cell clip and the centering of snap ring
The cone cell snap ring of snap ring matches, while the upper surface for boring wing body is combined with the lower end surface of support snap ring, is achieved in centering
The axial locking of ontology.
End nut uses short cylinder, and ring cavity inner wall vehicle standard pipe thread is simultaneously connected with centering cylinder, thus prevents cone wing body from producing
Raw to loosen, the outer ring surface diameter of end nut is equal to the column casing outer diameter of cone wing body, and the outer ring surface vehicle system of end nut is evenly distributed
Cecum screw hole, for tightening end nut.
Locator realize centering ontology in middle eyelid retractor to middle positioning, and by postive stop baffle complete bore it is tooth-like right
The lower limit of middle device and the tooth-like centralizer of impeller, it includes positioning ring, positioning bushing, postive stop baffle, zero type sealing ring, upper L-type
Sealing ring and lower L-type sealing ring.
Positioning ring uses long cylinder, and positions bushing and then use short cylinder, and positioning ring and the ring cavity inner wall for positioning bushing are same
When and the outer ring surface of centering cylinder between precision-fit and constitute bicylindrical prismatic pair, and positioning ring, positioning bushing and postive stop baffle
Outer ring surface simultaneously with the ring cavity inner wall precision-fit of support tube and constitute three cylinder prismatic pairs, positioning ring and positioning bushing it
Between configure upper L-type sealing ring, position and configure lower L-type sealing ring between bushing and postive stop baffle.
The outer ring surface of positioning ring from top to bottom sets gradually annular concave ditch, column card slot and column snap ring, the ring of positioning ring
The equidistant hierarchal arrangement of shape chase, and full lubricating grease is filled in the annular concave ditch of layer vertically, and along the annular of axial lower layer
Zero type sealing ring is configured in chase, the column card slot of positioning ring is matched with upper L-type sealing ring, and the column snap ring of positioning ring is then
It is matched with the column clip of positioning bushing.The outer ring surface lower part of positioning bushing sets gradually column card slot and column snap ring, fixed
The column card slot of position bushing is matched with lower L-type sealing ring, and position the column snap ring of bushing then with the column card of postive stop baffle
Hoop matches, while the ring cavity upper inside wall for positioning bushing is equipped with column clip, realizes the axially position of positioning ring.
Postive stop baffle uses box body, and outer ring surface sets gradually annular concave ditch and cone cell captures head, the annular of postive stop baffle
Zero type sealing ring is configured in chase, the cone cell of postive stop baffle captures head and uses the rounding conical surface, realizes fast in underground location operation
Speed captures, and the cone cell of postive stop baffle captures the taper of the head place rounding conical surface equal to inverted cone where the cone cell snap ring of support tube
The taper of the rounding conical surface where the taper in face and the cone cell capture surface of support box cupling, while the cone cell of postive stop baffle captures head place
The big end disc diameter and support box cupling of the rounding conical surface where the big end disc diameter of the rounding conical surface, the cone cell snap ring of support tube
Cone cell capture surface where the big end disc diameter of the rounding conical surface be sequentially increased.The ring cavity upper inside wall of postive stop baffle is equipped with column
Clip, realize positioning bushing axially position, and the ring cavity inner wall lower vehicle standard pipe thread of postive stop baffle and realize locator
Axial restraint.
The bottom plate central part of postive stop baffle is equipped with cylindricality eyelet, and the cylindricality eyelet of postive stop baffle and the outer ring of sucker rod
It is gap-matched between face, while the cylindricality eyelet top of postive stop baffle is equipped with cone cell clip, the cone cell clip of postive stop baffle
It is matched with the wheel addendum cone of gear teeth matrix, and realizes the lower limit of the tooth-like centralizer of impeller.The bottom edge of postive stop baffle is equipped with
Lower spray-hole, the lower spray-hole of postive stop baffle and the upper spray-hole of centering box use same size and shape, thus in down-hole pump
Liquid via injection after the lower spray-hole speed-raising of postive stop baffle to centering ontology.
The section of zero type sealing ring is rounded, and using the non-metallic material of acid/alkali-resistant, zero type sealing ring is respectively fixed
Between the ring cavity inner wall of the annular concave ditch and support tube of the annular concave ditch of position ring and the ring cavity inner wall of support tube and postive stop baffle
Form sealing surface.The section of upper L-type sealing ring and lower L-type sealing ring is L-shaped, is internally provided with uniformly distributed wire, and upper L-type is close
Seal forms sealing surface between the column card slot of positioning ring and the ring cavity inner wall of support tube, and lower L-type sealing ring is then positioning
Sealing surface is formed between the column card slot of bushing and the ring cavity inner wall of support tube.
Institute of the invention is attainable to be had the technical effect that, the centering eyelid retractor of the anti-bias mill apparatus realizes the support of centering ontology
And the connection between pumping pipe string and down-hole pump, centering ontology spray the liquid in down-hole pump according to deflector hole and upper spray-hole
It is incident upon rod tube annular space, tooth-like centralizer and the tooth-like centralizer of impeller is bored according to upper limit plate and postive stop baffle and completes two-way limit up and down
Position, and bore tooth-like centralizer and realize the follow-up centering of underground pump plunger and pump barrel matching part according to double-layer movable hydraulic fluid film, and lead to
Crossing stirring action avoids solid particle from depositing above plunger, and the tooth-like centralizer of impeller forms together with the tooth-like centralizer of cone
The dual eccentric abrasion prevention of twin tooth type, cone wing locker complete cone wing formula underground according to cone wing body and quickly position and lock onto centering ontology
In centering eyelid retractor, locator realize centering ontology in middle eyelid retractor to middle positioning.
Detailed description of the invention
The present invention will be further described below with reference to the drawings, but the invention is not limited to following embodiments.
Fig. 1 is the typical structure schematic diagram of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering proposed according to the present invention.
Fig. 2 is the structure diagram of centering eyelid retractor in the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Fig. 3 is the structure diagram of centering ontology in the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Fig. 4 is the structure diagram that tooth-like centralizer is bored in the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Fig. 5 is the bottom view of Fig. 4.
Fig. 6 is the structure diagram of the anti-bias mill apparatus middle period gear tooth-type centralizer of twin tooth type down-hole pump follow-up centering.
Fig. 7 is A-A cross-sectional view of Fig. 6.
Fig. 8 is the structure diagram that wing locker is bored in the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Fig. 9 is the structure diagram of locator in the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Figure 10 is the underground location work flow schematic diagram of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
Figure 11 is the underground follow-up centering work flow schematic diagram of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering.
1- sucker rod in figure, 2- centering ontology, 3- centering eyelid retractor, 4- bore tooth-like centralizer, and 5- bores wing locking
Device, the tooth-like centralizer of 6- impeller, 7- locator, 8- support box cupling, 9- support snap ring, 10- support tube, 11- centering box,
12- upper limit plate, 13- centering snap ring, 14- centering cylinder, 15- bore tooth matrix, and 16- bores tooth set, 17- impeller tooth, 18-
Gear teeth matrix, 19- bore wing body, 20- end nut, 21- positioning ring, zero type sealing ring of 22-, the upper L-type sealing ring of 23-, 24-
Position bushing, L-type sealing ring under 25-, 26- postive stop baffle.
Specific embodiment
In Fig. 1, the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering is mainly by centering ontology 2, centering eyelid retractor 3, cone
Tooth-like centralizer 4, cone wing locker 5, the tooth-like centralizer 6 of impeller and locator 7 form, and the anti-bias mill apparatus is tooth-like right according to boring
The dual eccentric abrasion prevention of twin tooth type that middle device 4 and the tooth-like centralizer 6 of impeller form, and combine the cone wing formula underground of cone wing locker 5 fast
Speed positioning, realizes the follow-up centering of underground pump plunger and pump barrel matching part, avoids down-hole pump that eccentric wear and solid particle occurs
It is deposited above plunger.
In Fig. 1, the specification of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering and the bar diameter of sucker rod 1 and pumping pipe string
Caliber be consistent, which is connected to the bottom of pumping pipe string by the support box cupling of centering eyelid retractor 3, and via
The support tube of centering eyelid retractor 3 is connected to the top of down-hole pump pump barrel, and sucker rod 1 sequentially passes through centering ontology 2, the tooth-like centering of cone
Device 4 and the tooth-like centralizer 6 of impeller and be linked together with the plunger of down-hole pump, centering ontology 2, cone wing locker 5,7 and of locator
Centering eyelid retractor 3 from inside to outside sequentially coaxially arrange by the heart, and centering ontology 2 is placed in centering eyelid retractor 3 and via cone 5 He of wing locker
The support snap ring of centering eyelid retractor 3 realizes axially position, bores tooth-like centralizer 4 and the tooth-like centralizer 6 of impeller is placed in centering ontology 2
And it is realized via upper limit plate and postive stop baffle bidirectionally limited.
In Fig. 1, before the anti-bias mill apparatus assembling of twin tooth type down-hole pump follow-up centering, outside 3 main element of centering eyelid retractor
Surface carries out spray painting preservative treatment respectively, and sucker rod 1 is successively placed in Ying Ling in the tooth-like centralizer 4 of cone and the tooth-like centralizer 6 of impeller
Rotation living and fluent, locator 7, which is placed in centering eyelid retractor 3, answers flexible rotating and fluent, and keeps centering ontology 2 and right
The cleaning of middle 3 inner wall of eyelid retractor is finally examined successively the cone tooth set of the tooth-like centralizer 4 of cone, bores the cone wing body and leaf of wing locker 5
The impeller tooth of gear tooth-type centralizer 6 has not damaged, and whether check at each thread connection securely and has non-corroding.
In Fig. 1, when the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering assembles, centering eyelid retractor 3 is close by cone
Tube sealing is threadedly coupled integrally, and centering ontology 2 limit plate and centering snap ring will be connected to centering cylinder, cone wing lock thereon by centering box
Tight device 5 is bored the centering cylinder that wing body is fixed on centering ontology 2 by end nut, bores tooth-like centralizer 4 and the tooth-like centering of impeller
Device 6 sequentially passes through sucker rod 1 and is placed into the centering cylinder of centering ontology 2, and last locator 7 is fixed on by its postive stop baffle
The lower end of 2 centering cylinder of centering ontology.
In Fig. 2, the specification of support box cupling 8 and the caliber of pumping pipe string in centering eyelid retractor 3 are consistent, support tube
10 specification and the barrel dliameter of down-hole pump pump barrel are consistent.
In Fig. 2, centering eyelid retractor 3 realizes the support of centering ontology 2, the column clip and support snap ring 9 of support tube 10
It matches, the cone cell snap ring of support tube 10 and the cone cell capture surface of support box cupling 8 match with the postive stop baffle of locator 7 simultaneously
It closes, and realizes that the underground between centering ontology 2 and locator 7 and centering eyelid retractor 3 quickly captures.
In Fig. 3, the specification of the centering box 11 in centering ontology 2 is consistent with the bar diameter of sucker rod 1, centering snap ring 13
Outer diameter with support box cupling 8 column snap ring face where the diameter on cylindrical surface it is corresponding, the axial length of centering cylinder 14 and support
The axial length of cylinder 10 is consistent, and the outer diameter at 14 shaft shoulder position of centering cylinder is corresponding with the support internal diameter of snap ring 9.
In Fig. 3, centering ontology 2 is realized by upper limit plate 12 bores the upper of tooth-like centralizer 4 and the tooth-like centralizer 6 of impeller
It limits, the liquid in centering cylinder 14 enters in centering box 11 through the column runner of upper limit plate 12, and then liquid is by centering box 11
Deflector hole and the speed-raising of upper spray-hole after injection to rod tube annular space, the cone cell snap ring of centering snap ring 13 and the cone cell of support snap ring 9
Clip matches.
In figures 4 and 5, the bar diameter phase of the cone 15 ring cavity inner diameter of tooth matrix and sucker rod 1 in tooth-like centralizer 4 is bored
It is corresponding, epicone tooth of the big end disc diameter of the conical surface plus twice of cone tooth set 16 where the back of tooth cone and addendum cone of cone tooth matrix 15
It is consistent with lower cone tooth along the maximum tooth height and the internal diameter of support tube 10 of tooth trace, the epicone tooth and lower cone tooth tooth trace of cone tooth set 16
Angle between cone 15 axis of tooth matrix reduces with the increase of liquid viscosity in centering cylinder 14.
In figures 4 and 5, the cone tooth matrix 15 and centering cylinder 14 for boring tooth-like centralizer 4 are axially formed wedge-shaped annular space, right
Liquid in middle cylinder 14 generates dynamic pressure liquid film, the lower cone tooth being evenly distributed in cone tooth set 16 on the outer ring surface of cone tooth matrix 15
V-arrangement tapered sleeve is formed, the liquid bored outside 15 dynamic pressure liquid film of tooth matrix generates dynamic pressure liquid film again on the conical surface where V-arrangement tapered sleeve.
In figure 6 and figure 7, the bar diameter phase of the 18 ring cavity inner diameter of gear teeth matrix and sucker rod 1 of the tooth-like centralizer 6 of impeller
Corresponding, cylindrical surface diameter and the internal diameter of support tube 10 are consistent where the crest top land of impeller tooth 17, the backlash of impeller tooth 17
Between the cross-sectional area sum in liquid communication duct of class arch increase with the increase of liquid viscosity in centering cylinder 14.
In figure 6 and figure 7, the tooth-like centralizer 6 of impeller forms the dual eccentric abrasion prevention of twin tooth type with tooth-like centralizer 4 is bored together,
Gear teeth matrix 18 and bore tooth matrix 15 ring cavity inner wall simultaneously between the outer ring surface of sucker rod 1 precision-fit and constitute cylinder shifting
It is dynamic secondary, the liquid communication duct of class arch is formed between the backlash of impeller tooth 17.
In fig. 8, the specification and support tube 10 of the rounding conical surface where boring the 19 cone cylinder outer ring surface of cone wing body in wing locker 5
It is formed by that annular space size is corresponding between centering cylinder 14, the outer ring surface diameter of end nut 20 is interior with support snap ring 9
Diameter is consistent.
In fig. 8, cone wing locker 5 realizes that cone wing formula underground quickly positions according to cone wing body 19, bores the cone cylinder of wing body 19
It circumferentially cuts and forms Reed type cone wing, end nut 20 is connected by pipe screw thread with centering cylinder 14, for preventing cone wing
Body 19 generates loosening.
In Fig. 9, between the positioning ring 21 in locator 7 and the specification and support tube 10 and centering cylinder 14 of positioning bushing 24
It is formed by that annular space size is corresponding, the specification of postive stop baffle 26 is consistent with the bar diameter of sucker rod 1, zero type sealing ring
22 type selecting needs to consider the stream pressure of down-hole pump liquid be discharged, the annular concave ditch size of positioning ring 21 and postive stop baffle 26
The type selecting of the factors such as annular concave ditch size, upper L-type sealing ring 23 and lower L-type sealing ring 25 needs to consider down-hole pump liquid be discharged
Stream pressure, the column card slot size of positioning ring 21 and the factors such as column card slot size for positioning bushing 24.
In Fig. 9, locator 7 realizes centering ontology 2 to, to middle positioning, zero type sealing ring 22 divides in middle eyelid retractor 3
Sealing is formed not between the ring cavity inner wall of the annular concave ditch and support tube 10 of the annular concave ditch of positioning ring 21 and postive stop baffle 26
Face, while upper L-type sealing ring 23 is configured between positioning ring 21 and positioning bushing 24, and in the column card slot of positioning ring 21 and support
Sealing surface is formed between the ring cavity inner wall of cylinder 10, is positioned and is configured lower L-type sealing ring 25 between bushing 24 and postive stop baffle 26, and
Position bushing 24 column card slot and support tube 10 ring cavity inner wall between form sealing surface, be achieved in centering eyelid retractor 3 with
Sealing between locator 7.
In Figure 10, in the underground location work flow of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering, box cupling 8 is supported
The bottom of pumping pipe string is connected to by pipe screw thread, support tube 10 is connected to the top of down-hole pump pump barrel, centering support by pipe screw thread
The pump barrel of device 3 and down-hole pump is gone into the well together with pumping pipe string and seat is in shaft bottom；Then, centering ontology 2 and cone wing locker 5 are logical
It crosses screw thread to be connected, sucker rod 1 sequentially passes through centering ontology 2, the tooth-like centralizer 4 of cone and the tooth-like centralizer 6 of impeller and down-hole pump
Plunger link together, locator 7 is then covered in the lower part of centering ontology 2；Followed by centering ontology 2, the tooth-like centering of cone
Device 4, cone wing locker 5, the tooth-like centralizer 6 of impeller and locator 7 are gone into the well with sucker rod 1 along pumping pipe string, limiting block
The cone cell of plate 26 captures head and successively captures the cone cell capture surface of support box cupling 8, the cone cell clip of support snap ring 9 and support tube 10
Cone cell snap ring, then centering ontology 2 complete in middle eyelid retractor 3 to middle positioning；Finally, the Reed type cone of cone wing body 19
Wing is along the ring cavity inner wall Stepwize Shrink for supporting snap ring 9 and slides downward, then supports the cone cell clip and centering snap ring of snap ring 9
13 cone cell snap ring matches, while the upper surface for boring wing body 19 is combined with the lower end surface of support snap ring 9, thus completes centering
The axial locking of ontology 2 and the cone wing formula underground of cone wing locker 5 quickly position.
In Figure 11, in the underground follow-up centering work flow of the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering, oil pumping
Buckling occurs during downlink for the connecting portion of bar 1 and underground pump plunger, and bias occurs between underground pump plunger and pump barrel,
Eccentricity is e, and the crest top land of impeller tooth 17 contacts with the ring cavity inner wall of centering cylinder 14 and limits eccentric distance e and continue to increase,
Thus the preliminary centering of underground pump plunger and pump barrel is completed；Then, the liquid in down-hole pump via postive stop baffle 26 lower injection
After the speed-raising of hole in injection to the barrel chamber of centering cylinder 14, the promotion tooth-like centralizer 6 of impeller slides upward and liquid is via impeller tooth 17
The liquid communication duct of class arch continues to flow upward between backlash；Then, cone tooth matrix 15 and centering cylinder 14 are along axial shape
Wedgewise annular space, the liquid in centering cylinder 14 generates dynamic pressure liquid film on the outer ring surface of cone tooth matrix 15, and dynamic pressure liquid film is everywhere
Film pressure is unequal and disengages the matching part of plunger and pump barrel, then bores the lower cone being evenly distributed in tooth set 16
Tooth form forming V-shape tapered sleeve, the liquid bored outside 15 dynamic pressure liquid film of tooth matrix generate dynamic pressure liquid again on the conical surface where V-arrangement tapered sleeve
The dynamic pressure liquid film of film, the dynamic pressure liquid film and cone tooth set 16 of boring tooth matrix 15 is superimposed from inside to outside and forms double-layer movable hydraulic fluid
Film, the liquid film total reaction of double-layer movable hydraulic fluid film realize the follow-up centering of pump barrel and plunger matching part, avoid down-hole pump from occurring inclined
Mill；Finally, centering ontology 2 realizes the upper limit for boring tooth-like centralizer 4 and the tooth-like centralizer 6 of impeller by upper limit plate 12, it is right
Liquid in middle cylinder 14 enters in centering box 11 through the column runner of upper limit plate 12, then liquid by centering box 11 deflector hole
With injection after the speed-raising of upper spray-hole to rod tube annular space.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type etc. are all can be
Variation, all equivalents and improvement carried out based on the technical solution of the present invention should not be excluded of the invention
Except protection scope.
Claims (10)
1. a kind of anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering, centering ontology, locator and centering eyelid retractor by interior and
Sequentially coaxially the heart is arranged outside, and locator and cone wing locker, with the concentric arrangement of radial position, centering ontology is placed in centering branch
It supports device and realizes axially position via cone wing locker and support snap ring, bore tooth-like centralizer and the tooth-like centralizer merging pair of impeller
Middle ontology, it is characterised in that:
One centering eyelid retractor；The centering eyelid retractor uses long cylinder, support in the middle part of the ring cavity inner wall of box cupling from top to bottom according to
Secondary setting cone cell capture surface and column snap ring face, the ring cavity inner wall of support tube from top to bottom set gradually column clip and cone cell card
Ring, support snap ring use thick-wall cylinder, and the ring cavity upper inside wall of snap ring is supported to be equipped with cone cell clip；
One centering ontology；The centering ontology is according to deflector hole and upper spray-hole by the liquid injection in down-hole pump to rod tube ring
Sky, centering box use box body, and the ring cavity inner wall of centering box sets gradually column clip, deflector hole, upper spray-hole from bottom to top
The runner being combined with cylindricality eyelet, the upper spray-hole of centering box using the post holes and taper hole that are evenly distributed, centering snap ring are adopted
With short tube body, upper limit plate uses plate-like steel plate, and centering cylinder uses long cylinder, and the outer ring surface lower part of centering snap ring is from top to bottom
Cone cell snap ring and column slide surface are set gradually, the central part of upper limit plate is drilled with limit hole and its edge is distributed along the circumference with
Column runner；
The one tooth-like centralizer of cone；The tooth-like centralizer of cone realizes underground pump plunger and pump barrel auxiliary section according to double-layer movable hydraulic fluid film
The follow-up centering of position, cone tooth matrix are from top to bottom successively arranged position-limited hoop, back of tooth cone, addendum cone and drainage body, thus bore tooth
Matrix is integrally V-shaped, and is axially formed wedge-shaped annular space in middle cylinder, and then the liquid in centering cylinder is in the outer of cone tooth matrix
Dynamic pressure liquid film is generated on anchor ring, the drainage body of cone tooth matrix uses semiellipse sphere, bores the transversal of the semiellipse sphere of tooth matrix
Face is in circular ring shape and its cross-sectional area is axially gradually reduced from top to bottom along sucker rod, thus bores the drainage body of tooth matrix in class
Bullet-nose shape；Cone tooth set is made of epicone tooth and lower cone tooth, and lower cone tooth includes the preceding flank of tooth and coast side of tooth, and bores tooth set
The preceding flank of tooth using concave surface and its coast side of tooth then uses convex surface, while bore tooth set lower cone tooth the tooth height along its trace direction by
Zero starts to be gradually increased, so that the lower cone gear form forming V-shape tapered sleeve being evenly distributed, bores the liquid outside tooth matrix dynamic pressure liquid film in V
Generate dynamic pressure liquid film on the conical surface where shape tapered sleeve again, the dynamic pressure liquid film of the dynamic pressure liquid film and cone tooth set of boring tooth matrix by interior and
It is superimposed outside and forms double-layer movable hydraulic fluid film；
The tooth-like centralizer of one impeller；It is dual anti-bias that the tooth-like centralizer of impeller forms twin tooth type together with the tooth-like centralizer of cone
Mill, the gear teeth matrix of the tooth-like centralizer of impeller are from top to bottom successively arranged wheel back cone, baffle and wheel addendum cone, the cutting of impeller tooth
Face is circumferentially evenly arranged and the axis keeping parallelism of the center line of its each cut surface and gear teeth matrix, the cut surface of impeller tooth by
A quarter cylindrical surface and two plane combinations form, and liquid communication duct, impeller are thus formed between the backlash of impeller tooth
The two sides of a quarter cylindrical surface and its liquid communication duct of arrangement evagination radially position in the middle part of the liquid communication duct of tooth
Respectively setting one plane, the plane of impeller tooth liquid communication duct two sides intersect vertically placement and simultaneously with a quarter cylindrical surface
Keep tangent, so that the liquid communication duct of impeller tooth axially shows class arch along sucker rod；
One cone wing locker；The cone wing locker realizes that cone wing formula underground quickly positions according to cone wing body, bores wing body by boring
Cylinder and column casing are composed, and the inside and outside anchor ring of cone wing body cone cylinder is all made of the rounding conical surface, the cone cylinder of cone wing body circumferentially cut and
It forms Reed type and bores wing, end nut uses short cylinder, the cecum screw hole that outer ring surface vehicle system is evenly distributed；
One locator；The locator is completed to bore the lower limit of tooth-like centralizer and the tooth-like centralizer of impeller by postive stop baffle,
Its positioning ring uses long cylinder, and positions bushing and then use short cylinder, and the outer ring surface of positioning ring from top to bottom sets gradually annular
Chase, column card slot and column snap ring, positioning ring configure zero type sealing ring, the column of positioning ring along the annular concave ditch of axial lower layer
Shape card slot is matched with upper L-type sealing ring, and the outer ring surface lower part for positioning bushing sets gradually column card slot and column snap ring, positioning
The column card slot of bushing is matched with lower L-type sealing ring, while the ring cavity upper inside wall for positioning bushing is equipped with column clip；Limit
Baffle uses box body, and outer ring surface sets gradually annular concave ditch and cone cell captures head, configuration zero in the annular concave ditch of postive stop baffle
Type sealing ring, the ring cavity upper inside wall of postive stop baffle are equipped with column clip, and the bottom plate central part of postive stop baffle is equipped with cylindrical hole
Eye and its cylindricality eyelet top are equipped with cone cell clip, and the bottom edge of postive stop baffle is equipped with lower spray-hole, and zero type sealing ring is cut
Face is rounded, and the section of upper L-type sealing ring and lower L-type sealing ring is L-shaped.
2. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the centering branch
The support that device realizes centering ontology is supportted, supports the cone cell capture surface of box cupling using the rounding conical surface, and the cone cell of box cupling is supported to capture
The diameter on cylindrical surface, supports the column card of box cupling where the small end disc diameter of the rounding conical surface is equal to its column snap ring face where face
The diameter on cylindrical surface is greater than the outer diameter of centering snap ring where anchor ring；
The column clip of the support tube of the centering eyelid retractor is matched with support snap ring, and realizes that the axial direction of support snap ring is solid
Fixed, the cone cell snap ring of support tube uses the rounding conical surface, and the cone cell capture surface of the cone cell snap ring of support tube and support box cupling is simultaneously
It is matched with the postive stop baffle of locator, and realizes that the underground between centering ontology and locator and centering eyelid retractor quickly captures；
The cone cell clip of support snap ring is matched with the cone cell snap ring of centering snap ring, and realizes the axially position of centering ontology.
3. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the centering sheet
Body realizes the upper limit for boring tooth-like centralizer and the tooth-like centralizer of impeller, the column clip realization pair of centering box by upper limit plate
The axial restraint of middle snap ring, the deflector hole of centering box use the streamlined duct being evenly distributed, the upper spray-hole of centering box
It is thick outer thin in runner, between the cylindricality eyelet of centering box is located at the central part of centering box and uses between the outer ring surface of sucker rod
Gap cooperation；Precision-fit between the ring cavity inner wall of centering snap ring and the outer ring surface of centering cylinder and constitute cylinder prismatic pair, centering card
The taper of the conical surface, the column of centering snap ring where the taper of the conical surface is equal to the cone cell clip of support snap ring where the cone cell snap ring of ring
Slide surface and support snap ring ring cavity inner wall between precision-fit and constitute cylinder prismatic pair；
The limit hole of the upper limit plate is composed of circular aperture and taper eyelet, and the liquid in centering cylinder is via upper limit
The column runner of plate enters centering box, the top setting shaft shoulder of centering cylinder and the axial restraint for realizing centering snap ring.
4. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the cone is tooth-like
Centralizer avoids solid particle from depositing above plunger by stirring action, bores the position-limited hoop and upper limit plate of tooth matrix
Limit hole matches, and the back of tooth cone of cone tooth matrix uses circular conical surface, and the epicone tooth of arrangement cone tooth set, bores the tooth top of tooth matrix thereon
It bores and uses the rounding conical surface, thereon the lower cone tooth of arrangement cone tooth set, so that the liquid after formation dynamic pressure liquid film is smoothly guided to cone
Tooth set, the drainage body of cone tooth matrix are used to for the liquid in centering cylinder being smoothly drained to the addendum cone of cone tooth matrix.
5. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the cone is tooth-like
The lower cone tooth tooth trace of the cone tooth set of centralizer is the helix along rounding conical surface expansion where the addendum cone of cone tooth matrix, down-hole pump
Down stroke in, cone tooth set makees the compound motion for sliding and rotating upward relative to sucker rod, and makees the cone tooth of compound motion
The liquid being stirred continuously in centering cylinder is covered, so that the solid particles such as coal grain and sand grains entrained in liquid be prevented to generate sedimentation.
6. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the impeller tooth
The gear teeth substrate ring cavity wall of formula centralizer and the cone tooth substrate ring cavity wall of the tooth-like centralizer of cone while the outer ring with sucker rod
Precision-fit between face and constitute cylinder prismatic pair, the wheel back cone of gear teeth matrix uses circular conical surface, and the baffle of gear teeth matrix is used
The wheel back cone of gear teeth matrix will be smoothly guided to via the liquid of impeller tooth, the wheel addendum cone of gear teeth matrix uses the rounding conical surface,
And the taper of the rounding conical surface is less than the taper of circular conical surface where it takes turns back cone where the wheel addendum cone of gear teeth matrix；
The impeller tooth of the tooth-like centralizer of impeller is formed by gear teeth matrix cutting, and the crest top land of impeller tooth is in same cylindrical surface
On, and be gap-matched between cylindrical surface and the ring cavity inner wall of centering cylinder where the crest top land of impeller tooth, guarantee underground pump plunger shaft
The preliminary centering of plug and pump barrel.
7. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the cone wing lock
Centering ontology is lock onto centering eyelid retractor by tight device, is bored the column casing vehicle standard pipe thread of wing body and is connected with centering cylinder, bores wing body
The small end disc diameter of the rounding conical surface is greater than the outer diameter of centering cylinder where the inner ring surface of cone cylinder, where the outer ring surface for boring wing body cone cylinder
The big end disc diameter of the rounding conical surface is less than the internal diameter of support tube and its small end disc diameter is less than the internal diameter of support snap ring；Bore wing
The Reed type cone wing of body wall slip along the ring cavity of support snap ring, then supports the cone cell clip of snap ring and the cone of centering snap ring
Shape snap ring matches, while the upper surface for boring wing body is combined with the lower end surface of support snap ring, is achieved in the axis of centering ontology
To locking；The ring cavity inner wall vehicle standard pipe thread of end nut is simultaneously connected with centering cylinder, prevents cone wing body from generating loosening.
8. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the locator
Realize centering ontology in middle eyelid retractor to middle positioning, the ring cavity inner wall of positioning ring and positioning bushing at the same with centering cylinder
Precision-fit between outer ring surface and constitute bicylindrical prismatic pair, and positioning ring, positioning bushing and postive stop baffle outer ring surface simultaneously
With the ring cavity inner wall precision-fit of support tube and constitute three cylinder prismatic pairs, upper L-type is configured between positioning ring and positioning bushing
Sealing ring positions and configures lower L-type sealing ring between bushing and postive stop baffle；
The equidistant hierarchal arrangement of the annular concave ditch of the positioning ring, and full lubricating grease is filled in the annular concave ditch of layer vertically,
The column snap ring of positioning ring is matched with the column clip of positioning bushing, and positions the column snap ring of bushing and the column of postive stop baffle
Shape clip matches.
9. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the limiting block
The cone cell of plate captures head and uses the rounding conical surface, and the cone cell of postive stop baffle captures the taper of the head place rounding conical surface equal to support tube
Cone cell snap ring where the rounding conical surface where the taper of the rounding conical surface and the cone cell capture surface of support box cupling taper, limit simultaneously
The big end of the rounding conical surface where the cone cell snap ring of the big end disc diameter of the rounding conical surface, support tube where the cone cell of baffle captures head
The big end disc diameter of the rounding conical surface is sequentially increased where the cone cell capture surface of disc diameter and support box cupling, postive stop baffle
Column clip realizes the axially position of positioning bushing.
10. the anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering according to claim 1, it is characterised in that: the limit
It is gap-matched between the cylindricality eyelet of baffle and the outer ring surface of sucker rod, and the cone cell clip of postive stop baffle and gear teeth matrix
Wheel addendum cone match, and realize the lower limit of the tooth-like centralizer of impeller, the liquid in down-hole pump via postive stop baffle lower spray
It sprays after perforation speed-raising to centering ontology；
The zero type sealing ring respectively the annular concave ditch of positioning ring and support tube ring cavity inner wall and postive stop baffle annular
Sealing surface is formed between chase and the ring cavity inner wall of support tube, upper L-type sealing ring is in the column card slot of positioning ring and the ring of support tube
Sealing surface is formed between cavity wall, lower L-type sealing ring forms close between the column card slot of positioning bushing and the ring cavity inner wall of support tube
Cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205710.2A CN109386460B (en) | 2018-10-17 | 2018-10-17 | The anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205710.2A CN109386460B (en) | 2018-10-17 | 2018-10-17 | The anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering |
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| CN109386460A CN109386460A (en) | 2019-02-26 |
| CN109386460B true CN109386460B (en) | 2019-11-05 |
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| CN201811205710.2A Expired - Fee Related CN109386460B (en) | 2018-10-17 | 2018-10-17 | The anti-bias mill apparatus of twin tooth type down-hole pump follow-up centering |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182537A (en) * | 1977-04-04 | 1980-01-08 | Conoco, Inc. | Anti-friction sucker rod guide assembly |
| CN201730559U (en) * | 2010-07-07 | 2011-02-02 | 靳从起 | Self-rotating pumping rod centering device |
| AU2016277644B2 (en) * | 2015-12-29 | 2021-06-24 | Cobalt Extreme Pty Ltd | Advance Failure Warning Apparatus And System For Downhole Gear |
| CN206175186U (en) * | 2016-11-24 | 2017-05-17 | 东北石油大学 | Alternating load eccentric wear prevention pump |
| CN107724973A (en) * | 2017-11-11 | 2018-02-23 | 苏州星如雨电子科技有限公司 | A kind of eccentric abrasion prevention steel ball stabilizer |
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