CN108953132A - Coal bed gas well mining pumps jack catchs type helical tooth centralising device - Google Patents
Coal bed gas well mining pumps jack catchs type helical tooth centralising device Download PDFInfo
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- CN108953132A CN108953132A CN201810889276.8A CN201810889276A CN108953132A CN 108953132 A CN108953132 A CN 108953132A CN 201810889276 A CN201810889276 A CN 201810889276A CN 108953132 A CN108953132 A CN 108953132A
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- centering
- ring
- mining
- helical tooth
- tooth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
Abstract
The present invention provides a kind of coal bed gas well minings to pump jack catchs type helical tooth centralising device, the underground centering applied to plunger and pump barrel.The centralising device effectively prevent low submergence operating condition coal dust in plunger and to depositing above middle cover using helical tooth stirring and jack catchs type docking technique, and avoids coal dust holddown；Centering cover injects the annular space of mining bar and mining pipe according to the well liquid that the jet nozzle of hierarchal arrangement inhales mining pumping, helical tooth blender realizes upper limit through centering cover and realizes lower limit by centering box cupling, centering matrix connect with centering cover and the docking claw Trinity and keeps concentric arrangement, dock the underground rapid abutting joint that claw realizes centering cover and centering matrix and centering box cupling, the real-time centering in underground between plunger and mining bar and pump barrel is realized according to the bicylindrical prismatic pair between centering box cupling and centering cover and mining bar simultaneously, and centering box cupling completes the speed-raising of well liquid above plunger.
Description
Technical field
The present invention relates to a kind of devices of coal bed gas well mining pump operation plunger and pump barrel centering, more particularly to one kind
Centralising device is pumped using the underground mining of helical tooth stirring and jack catchs type docking technique.
Background technique
Coal-bed gas exploitation enters the stable yields stage, and the submergence in pit shaft is usually lower, well liquid from mining pumping suction go out after,
Coal dust entrained by it is easy to be deposited in the annular space that roofbolt above plunger and tubing string are constituted, and coal dust holddown is caused to be asked
The appearance of topic.In addition, the problem of mining pump can be encountered during water pumping gas production operation similar to plunger and pump barrel eccentric wear, especially
Solve the problems, such as that plunger and the pump barrel eccentric wear in coal bed gas horizontal well and inclined shaft will have important practical significance.
It solves the problems, such as that coal bed gas well plunger and pump barrel eccentric wear mainly use at present and adds oil pumping rod centering device and oil pipe
The mode of centralizer, and the research for pumping dedicated centralising device to coal bed gas well mining is then less, common centralizer can be divided into
Elastic centralizer, rigid centralizer and fluid pressure type centralizer.Wherein, elastic centralizer includes single arcuate resilient centralizer and bouble-bow
Shape elastic centralizer, it is to generate stronger uprighting force using the flexible deformation of elastic element, to make R a T
Centralizer is good, however the bow height of single arcuate resilient centralizer is smaller, and is usually used in straight well or small Wells, double arcuate resilients
Centralizer is larger with the frictional resistance of tubing string during the well entry process, and arcuate bombing leaf is easy thorn and scrapes tube wall.Rigid centralizer includes spiral shell
Rotating rigid centralizer and roller rigid centralizer, it has the characteristics that low startup power, low down enter force and high reset force, however
Rigid centralizer be only applicable to that dog-leg severity is smaller and the preferably regular well of casing programme in, and it is excessive using rigid centralizer when,
It will increase the rigidity of R a T, and keep R a T tripping in difficult, sucker rod and oil are then influenced whether when very few
The centralizer of pipe.Fluid pressure type centralizer is the correlation theories knowledge with mechanical and mechanics, optimizes the quantity and righting of body resistance-strengthening tablets
The spacing of piece, and increase inside centralizer and close nested structure, the centralizer construct at the scene in have certain application, however with
Other kinds of centralizer is compared, and structure is complicated for fluid pressure type centralizer, higher cost and controllability is poor, so that its
Using being restricted.
Summary of the invention
In order to effectively solve the problems, such as the centering of plunger and pump barrel in coal bed gas well mining pump and existing centralizer be overcome to exist
Defect and deficiency, the object of the present invention is to provide a kind of coal bed gas well plunger and pump barrel eccentric wear and low submergence operating conditions
Jack catchs type helical tooth centralising device.The centralising device realizes coal bed gas well row using helical tooth stirring and jack catchs type docking technique
The real-time centering in the underground of plunger and pump barrel in pump is adopted, effectively prevent low submergence operating condition coal dust above plunger and on middle cover
Fang Fasheng deposition, and avoid coal dust holddown.
The technical solution adopted by the present invention to solve the technical problems is to provide a kind of coal bed gas well mining pump jack catchs type spiral shell
Tooth centralising device is revolved, which mainly connects by centering cover, helical tooth blender, centering matrix, docking claw and in
Hoop composition.Axial symmetry box body is integrally presented in the centralising device, it is connected to the bottom end of mining pipe, while mining by centering box cupling
Bar sequentially pass through centering cover, helical tooth blender and centering box cupling and with mining pump plunger be connected, according to centering cover with
Bicylindrical prismatic pair between centering box cupling and mining bar and realize the real-time centering in underground between plunger and mining bar and pump barrel, centering
From top to bottom sequentially coaxially the heart is arranged for cover, centering matrix, docking claw and centering box cupling, and helical tooth blender is placed in centering base
Body is simultaneously realized bidirectionally limited via centering cover and centering box cupling.
Centering cover injects mining bar and mining pipe according to the well liquid that the jet nozzle of hierarchal arrangement inhales mining pumping
Annular space can effectively prevent low submergence operating condition coal dust to deposit above to middle housing, it includes centering housing and penetrates
Flow nozzle.
Centering housing uses alms bowl sandwich type element, and center of top position is drilled with the cylindricality duct concentric with centering cover, right
Precision-fit between the cylindricality duct of middle housing and the outer ring surface of mining bar and constitute cylinder prismatic pair.On the shell of centering housing
It is drilled with the jet hole of hierarchal arrangement, each layer jet hole is uniformly distributed circumferentially, each layer jet hole slant setting and its axis and water
The angle of interplanar is sequentially increased from bottom to top along axial direction, is protected between the axis of top layer jet hole and the axis of centering cover
Maintain an equal level row, and for each jet hole using the ladder surface of revolution and interior thick outer thin, each jet hole is lined with jet nozzle respectively.
Jet nozzle uses uniform thickness thin wall cylinder, and the specification of each jet nozzle is identical with structure, and jet nozzle is by centering housing
Inside is successively set as cone cell cylinder and cylindrical barrel body outward, and the cone cell cylinder and cylindrical barrel body of jet nozzle use concentric cloth
It sets, the cone cell cylinder of jet nozzle is using interior thick outer thin construction, the small end circle of the conical surface where jet nozzle cone cell cylinder inboard wall
The diameter of cylinder where face diameter is equal to its cylindrical barrel body inner wall, and in the cone cell cylinder inboard wall of jet nozzle and its cylindrical barrel body
Wall junction carries out transition using streamlined curved surface, and thus the intracorporal well liquid of centering cover is via the row of injection after the pressurization of each jet nozzle
Adopt the annular space of bar and mining pipe.
Helical tooth blender uses helical tooth stirring technique, and low submergence operating condition coal dust is effectively prevent to occur above plunger
Deposition, and the top of helical tooth blender realizes that lower limit is then realized by centering box cupling in upper limit and its bottom end through centering cover,
It includes helical tooth and stirring base tube.
It stirs base tube and uses long tube body, be gap-matched between ring cavity inner wall and the outer ring surface of mining bar, stir base
The outer ring surface of pipe is from top to bottom successively arranged the anti-vortex sheet of cone cell, column anchor ring and inverted cone shape guide face, stirs the column ring of base tube
Helical tooth is distributed along the circumference on face, the inverted cone shape guide face for stirring base tube is used to smoothly import well liquid the tooth socket of spiral between cog
It is interior, and the anti-vortex sheet of cone cell for stirring base tube is used to by the tooth socket of helical tooth smoothly import the well liquid after stirring in centering cover,
And well liquid is avoided to generate vortex, the taper of the conical surface is greater than cone where its inverted cone shape guide face where stirring the anti-vortex sheet of cone cell of base tube
The taper in face, while the small end disc diameter of the conical surface is equal to where its inverted cone shape guide face where the anti-vortex sheet of cone cell for stirring base tube
The small end disc diameter of the conical surface.
The surface of helical tooth need to carry out nickel-plated phosphor processing, and the tooth trace of helical tooth is the column anchor ring expansion along stirring base tube
Helix, the angle between the evolute of helical tooth tooth trace and the axis for stirring base tube is tooth trace angle, and the tooth trace angle of helical tooth is with row
Pumping is adopted to inhale the reduction of well liquid viscosity and increase.Helical tooth is in isosceles trapezoid, and helical tooth in the normal plane end face perpendicular to tooth trace
The width of normal plane end face face outwardly and its leptoprosopy inwardly, to guarantee the good whipping performance of helical tooth；The height of helical tooth normal plane end face
Degree is gradually increased before this along tooth trace then to be remained unchanged, and is gradually reduced in the end of tooth trace, while the crest top land of helical tooth is whole
Anchor ring is presented in body, and the anchor ring where helical tooth crest top land is from top to bottom followed successively by cone cell anchor ring, column anchor ring and inverted cone shape ring
Face, the cone cell anchor ring and inverted cone shape anchor ring of helical tooth are opposite with the anti-vortex sheet of cone cell of stirring base tube and inverted cone shape guide face respectively
Answer, thus well liquid and the contact area of helical tooth were changed from small to big before this to form stable liquid film, be sufficiently stirred rear well liquid with
The contact area of helical tooth gradually becomes smaller and is smoothly exported the tooth socket of helical tooth.
Centering matrix uses cylindricality box body, it connect with centering cover and the docking claw Trinity and keeps concentric cloth
It sets, it includes centering base tube, centering gland, centering pipe nipple and upper zero shape ring.
The diameter of cylinder where centering base tube uses long tube body, the diameter of ring cavity inner wall to be greater than helical tooth column anchor ring,
The outer ring surface of centering base tube uses multi-diameter shaft, the both ends of centering base tube by leakproofness pipe screw thread respectively with centering housing and centering
Bushing is connected.The middle part of centering base tube outer ring surface from top to bottom sets gradually column snap ring, column slide surface and tooth form pressure ring,
The column snap ring of centering base tube realizes the axially position of centering gland by the shaft shoulder, is milled with ring on the column slide surface of centering base tube
Shape groove, the ring-shaped groove hierarchal arrangement of centering base tube and the upper zero shape ring of configuration in it, it is short with centering to be achieved in centering base tube
The stitching surface of the sealing of internode, centering base tube tooth form pressure ring uses zigzag ring tooth, and the inside and outside anchor ring of tooth form pressure ring is all made of
Cylinder.
Centering gland uses thick-wall cylinder, and central part is drilled with cylindricality eyelet, the cylindricality eyelet of centering gland and centering
Be gap-matched between the column snap ring of base tube, the outer ring surface diameter of centering gland be greater than the outer ring surface diameter of centering housing and
Less than the internal diameter of mining pipe.Centering pipe nipple use long tube body, both ends by leakproofness pipe screw thread respectively with centering gland and card
Corpus unguis is connected, precision-fit between the ring cavity inner wall of centering pipe nipple and the column slide surface of centering base tube and to constitute cylinder mobile
It is secondary.
It docks claw and uses jack catchs type docking technique, realize that centering cover and centering matrix and the underground of centering box cupling are quick
Docking, it includes jaw body, centering bushing, L V-shaped ring and lower zero shape ring.
The outer ring surface of jaw body is from top to bottom successively arranged column slide surface, annular concave ditch and cone cell claw along axial direction, card
Ring-shaped groove, the ring-shaped groove hierarchal arrangement of jaw body and the lower zero shape ring of configuration in it are milled on the column slide surface of corpus unguis, by
This realizes the sealing between docking claw and centering box cupling, smart between the column slide surface of jaw body and the ring cavity inner wall of centering box cupling
Close fit and constitute cylinder prismatic pair；The cone cell snap ring of configuration centering box cupling in the annular concave ditch of jaw body, realizes docking claw
Axially position；The cone cell claw of jaw body is plane using the monomer being evenly distributed, the end face of each cone cell claw two sides, and
The end face of each cone cell claw two sides intersects at the axis of docking card pawl, and cone cell clip is arranged in the upper and lower ends of each cone cell claw,
The cone cell clip of cone cell claw lower end realizes that claw is docked during the butt-joint operation of underground quickly captures centering box cupling, and cone cell card
The cone cell clip of pawl upper end then realizes the axial restraint of docking claw after the butt-joint operation of underground.The ring cavity inner wall of jaw body is equipped with fixed
Position plate, the positioning plate of jaw body realizes the axially position of centering pipe nipple and centering bushing and connects each cone cell claw, while claw
The positioning plate central part of body is drilled with pipe running system.
Centering bushing uses thick-wall cylinder, precision-fit between the outer ring surface of centering bushing and the ring cavity inner wall of centering pipe nipple
And cylinder prismatic pair is constituted, the central part of centering bushing is drilled with pipe running system, the pipe running system diameter and claw of centering bushing
The pipe running system diameter of body is equal and is less than the diameter of centering base tube ring cavity inner wall.The upper surface of centering bushing uses zigzag ring
Tooth, the zigzag ring tooth of centering bushing and the axially symmetric arrangement of the zigzag ring tooth of centering base tube are formed by toroidal cavity
L V-shaped ring is configured, and the tight L V-shaped ring of the zigzag ring toothholder of the zigzag ring tooth of centering bushing and centering base tube generates diameter
Metal sealing is formed to deformation, the sealing being achieved between docking claw and centering matrix.
The section of L V-shaped ring is L-shaped, internal to be arranged equally distributed wire, upper zero shape ring and lower zero shape ring
Section is rounded and its material selection acid/alkali-resistant sizing material.L V-shaped ring uses single-layer metal sealing ring, and upper zero shape ring is adopted
With the double-deck nonmetallic sealing ring, lower zero shape ring uses three layers of nonmetallic sealing ring.The ring cavity inner wall of L V-shaped ring respectively with centering
The inside and outside anchor ring of base tube tooth form pressure ring matches and forms sealing surface, and the ring cavity of the outer ring surface of L V-shaped ring and centering pipe nipple
Inner wall cooperates and forms sealing surface.
Centering box cupling uses thick-wall cylinder, according to the bicylindrical prismatic pair between centering box cupling and centering cover and mining bar
It realizes the real-time centering in underground between plunger and mining bar and pump barrel, and completes the speed-raising of well liquid above mining pump plunger.
The outer ring surface of centering box cupling is connected by conical leakproofness pipe screw thread with mining pipe, and in centering box cupling ring cavity
The lower part of wall is connected by conical leakproofness pipe screw thread with the pump barrel that mining pumps.The top of centering box cupling ring cavity inner wall is equipped with
Wedge-shaped groove, the anchor ring where the wedge-shaped groove of centering box cupling are in inverted cone surface, and under the wedge-shaped groove of centering box cupling and jaw body
The cone cell clip at end matches.The middle part of centering box cupling ring cavity inner wall is from top to bottom successively arranged cone cell snap ring, annular along axial direction
The section of chase and intercepter plate, centering box cupling cone cell snap ring is trapezoidal, and configuration jaw body in the annular concave ditch of centering box cupling
Cone cell claw.The central part of centering box cupling intercepter plate is drilled with cylindricality duct, the cylindricality duct of centering box cupling and centering housing
Cylindricality duct concentric arrangement from bottom to top, and between the cylindricality duct of centering box cupling and the outer ring surface of mining bar precision-fit and
Cylinder prismatic pair is constituted, it is mobile thus to form the identical bicylindrical of glide direction between centering box cupling and centering cover and mining bar
It is secondary.The outer rim of centering box cupling intercepter plate is equipped with the speed-raising runner being evenly distributed, and each runner that raises speed uses up-narrow and down-wide construction,
Thus well liquid flows into centering matrix via after each speed-raising runner speedup above mining pump plunger.
Institute of the invention is attainable to be had the technical effect that, which is stirred using helical tooth and jack catchs type docking technique,
Low submergence operating condition coal dust is effectively prevent in plunger and to depositing above middle cover, and avoids coal dust holddown；Centering cover
The well liquid that jet nozzle according to hierarchal arrangement inhales mining pumping injects the annular space of mining bar and mining pipe, and helical tooth stirs
Mix that upper limit is realized through centering cover in the top of device and lower limit is then realized by centering box cupling in the bottom end of helical tooth blender；Centering
Matrix uses cylindricality box body, it connect and keep concentric arrangement with centering cover and the docking claw Trinity, docks claw
Realize the underground rapid abutting joint of centering cover and centering matrix and centering box cupling, centering box cupling uses thick-wall cylinder, according to centering
Bicylindrical prismatic pair between box cupling and centering cover and mining bar and realize that the underground between plunger and mining bar and pump barrel is right in real time
In, and complete the speed-raising of well liquid above mining pump plunger.
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 letter of the coal bed gas well mining pump jack catchs type helical tooth centralising device proposed according to the present invention
Figure.
Fig. 2 is the structure diagram of centering cover in coal bed gas well mining pump jack catchs type helical tooth centralising device.
Fig. 3 is the structure diagram of helical tooth blender in coal bed gas well mining pump jack catchs type helical tooth centralising device.
Fig. 4 is the structure diagram of centering matrix in coal bed gas well mining pump jack catchs type helical tooth centralising device.
Fig. 5 is the structure diagram that claw is docked in coal bed gas well mining pump jack catchs type helical tooth centralising device.
Fig. 6 is the bottom view of Fig. 5.
Fig. 7 is the structure diagram of centering box cupling in coal bed gas well mining pump jack catchs type helical tooth centralising device.
Fig. 8 is the bottom view of Fig. 7.
Fig. 9 is the underground butt-joint operation general flow chart of coal bed gas well mining pump jack catchs type helical tooth centralising device.
Figure 10 is the real-time centering work flow schematic diagram in underground of coal bed gas well mining pump jack catchs type helical tooth centralising device.
1- mining bar in figure, 2- mining pipe, 3- centering cover, 4- helical tooth blender, 5- centering matrix, 6- pairs
Middle box cupling, 7- dock claw, 8- jet nozzle, 9- centering housing, 10- helical tooth, 11- stirring base tube, 12- centering base
It manages, 13- centering gland, the upper zero shape ring of 14-, 15- centering pipe nipple, 16-L V-shaped ring, 17- centering bushing, zero under 18-
Shape ring, 19- jaw body.
Specific embodiment
In Fig. 1, coal bed gas well mining pumps jack catchs type helical tooth centralising device and is mainly stirred by centering cover 3, helical tooth
Device 4, centering matrix 5, centering box cupling 6 and docking claw 7 form, which is connected to mining pipe 2 by centering box cupling 6
Bottom end, while mining bar 1 sequentially passes through centering cover 3, helical tooth blender 4 and centering box cupling 6 and the plunger phase with mining pump
Even, plunger and mining bar 1 and pump barrel are realized according to the bicylindrical prismatic pair between centering cover 3 and centering box cupling 6 and mining bar 1
Between the real-time centering in underground.
In Fig. 1, coal bed gas well mining pumps the specification of jack catchs type helical tooth centralising device and the bar diameter and mining of mining bar 1
The caliber of pipe 2 is consistent, centering cover 3, centering matrix 5, docking claw 7 and centering the box cupling 6 from top to bottom sequentially coaxially heart
Arrangement, helical tooth blender 4 are placed in centering matrix 5 and realize bidirectionally limited via centering cover 3 and centering box cupling 6.
In Fig. 1, before coal bed gas well mining pumps the assembling of jack catchs type helical tooth centralising device, centering cover 3, centering matrix 5
Spray painting preservative treatment is carried out respectively with the outer surface of 6 main element of centering box cupling, and mining bar 1 is successively placed in centering cover 3, spiral
Flexible rotating and fluent is answered in tooth blender 4 and centering box cupling 6, and keeps the clear of 6 inner wall of centering matrix 5 and centering box cupling
It is clean, it is not damaged finally to check that the jaw body of docking claw 7 and L V-shaped ring have, whether check at each thread connection securely and has
Non-corroding.
In Fig. 1, when coal bed gas well mining pumps the assembling of jack catchs type helical tooth centralising device, the L V-shaped ring of claw 7 is docked
It is placed on the centering base tube of centering matrix 5, and the centering bushing for docking claw 7 is threadingly attached to the centering base of centering matrix 5
Pipe, then the centering gland of centering matrix 5 and centering pipe nipple are placed on its centering base tube, and are threadingly attached to docking claw 7
Jaw body, centering cover 3 is threadingly attached to the centering base tube of centering matrix 5, is finally placed in helical tooth blender 4 pair
In middle matrix 5.
In Fig. 2, the specification of centering cover 3 and the annular space size of mining bar 1 and mining pipe 2 are consistent, centering
The cylindricality duct aperture of housing 9 is consistent with the bar diameter of mining bar 1, and the quantity and specification size of jet nozzle 8 are pumped with mining
The flow velocity and coal powder density for aspirating well liquid are adjusted.
In Fig. 2, well liquid that centering cover 3 inhales mining pumping according to the jet nozzle 8 that 9 higher slice of centering housing arranges
The annular space for injecting mining bar 1 and mining pipe 2 constitutes cylinder prismatic pair between the cylindricality duct and mining bar 1 of centering housing 9,
Jet nozzle 8 by being successively set as cone cell cylinder and cylindrical barrel body, and the cone cell cylinder of jet nozzle 8 outward inside centering housing 9
Using interior thick outer thin construction, thus promoted via the stream pressure of well liquid after each jet nozzle 8.
In Fig. 3, the specification and mining bar 1 and centering matrix 5 of helical tooth blender 4 are formed by toroidal cavity size guarantor
Consistent, axial length of the helical tooth 10 along axial length less than stirring 11 column anchor ring of base tube is held, and the tooth of helical tooth 10 is high
It is adjusted with the centering base tube of centering matrix 5 and the annular space of stirring base tube 11, the axial length of stirring base tube 11 is less than
The axial length of 5 centering base tube of centering matrix.
In Fig. 3, helical tooth blender 4 realizes upper limit through centering housing 9 and realizes lower limit by centering box cupling 6, stirs
It mixes and is gap-matched between base tube 11 and mining bar 1, flow through well liquid in 5 centering base tube of centering matrix and the contact of helical tooth 10
Area changed from small to big to form stable liquid film before this, and rear well liquid is sufficiently stirred and the contact area of helical tooth 10 gradually becomes smaller
And well liquid is smoothly exported to the tooth socket of helical tooth 10, it is possible thereby to the plunger for effectivelying prevent low submergence operating condition coal dust to pump in mining
Top deposits.
In Fig. 4, the specification of centering matrix 5 and the caliber of mining pipe 2 are consistent, 12 ring cavity inner wall of centering base tube it is straight
The diameter of cylinder, the outer ring surface diameter of centering gland 13 are greater than the outer of centering housing 9 where diameter is greater than 10 column anchor ring of helical tooth
The specification of anchor ring diameter and the internal diameter for being less than mining pipe 2, upper zero shape ring 14 is chosen according to centering base tube 12, and upper zero shape ring
14 carry out type selecting according to the stream pressure in the annular space of mining bar 1 and mining pipe 2.
In Fig. 4, centering matrix 5 connect and keeps concentric arrangement with centering cover 3 and docking 7 Trinity of claw,
The ring-shaped groove hierarchal arrangement of centering base tube 12 and the upper zero shape ring 14 of configuration in it, are achieved in centering base tube 12 and centering pipe nipple
Sealing between 15 is gap-matched, the ring cavity of centering pipe nipple 15 between the cylindricality eyelet and centering base tube 12 of centering gland 13
Cylinder prismatic pair is constituted between inner wall and the column slide surface of centering base tube 12.
In fig. 5 and fig., dock claw 7 specification be consistent with centering box cupling 6, the annular concave ditch of jaw body 19 and
The cone cell snap ring of centering box cupling 6 matches, and the specification of centering bushing 17 is consistent with centering pipe nipple 15, the cylindricality of centering bushing 17
Flow diameter is equal with the pipe running system diameter of jaw body 19 and is less than the diameter of 12 ring cavity inner wall of centering base tube, L V-shaped ring
16 specification is consistent with centering base tube 12, and L V-shaped ring 16 presses according to the stream that mining pumping inhales well liquid and carries out type selecting, and lower zero
The specification of shape ring 18 is chosen according to jaw body 19, and the stream pressure for inhaling well liquid according to mining pumping with zero shape ring 18 at present is selected
Type.
In fig. 5 and fig., docking claw 7 realizes that centering cover 3 and centering matrix 5 and the underground of centering box cupling 6 are quickly right
It connects, the ring-shaped groove hierarchal arrangement of jaw body 19 and the lower zero shape ring 18 of configuration in it are achieved in docking claw 7 and centering box cupling
Sealing between 6, the zigzag ring tooth of centering bushing 17 and the tight L V-shaped ring 16 of the zigzag ring toothholder of centering base tube 12 generate diameter
Metal sealing is formed to deformation, the sealing being achieved between docking claw 7 and centering matrix 5.
In figures 7 and 8, the specification of 6 top pipe screw thread of centering box cupling and the caliber of mining pipe 2 are consistent, and centering
The specification of 6 lower part pipe screw thread of box cupling is then consistent with mining pump pump barrel diameter, the cylindricality duct of centering box cupling 6 and mining bar 1
Bar diameter it is consistent, the annular concave ditch of centering box cupling 6 is matched with the cone cell claw of jaw body 19,6 intercepter plate of centering box cupling
The quantity of runner that raises speed and specification size are adjusted with the flow velocity and coal powder density of well liquid above plunger
In figures 7 and 8, bicylindrical prismatic pair is constituted between centering box cupling 6 and centering cover 3 and mining bar 1, to realize
The real-time centering in underground between mining bar 1 and the plunger and mining pump pump barrel of mining pump, the speed-raising runner of 6 intercepter plate of centering box cupling are adopted
With up-narrow and down-wide construction, thus the well liquid above mining pump plunger flows into centering matrix 5 via after each speed-raising runner speedup.
In Fig. 9, coal bed gas well mining is pumped in the underground butt-joint operation process of jack catchs type helical tooth centralising device, is connect in
Hoop 6 is connected by the conical leakproofness pipe screw thread of its underpart with the pump barrel that mining pumps, while centering box cupling 6 is via upper part
Conical leakproofness pipe screw thread is connected to the bottom end of mining pipe 2, the pump barrel of centering box cupling 6 and mining pump with mining pipe 2 along
Casing string is gone into the well and seat is in shaft bottom；Then, centering cover 3, centering matrix 5 and docking claw 7 extend axially through screw thread and successively connect
It is connected together, then mining bar 1 sequentially passes through centering cover 3 and helical tooth blender 4, and is connected with the plunger of mining pump；
Then, centering cover 3, centering matrix 5, docking claw 7 and helical tooth blender 4 are with mining bar 1 along under mining pipe 2
Well, and by the cooperation between the cone cell clip of 19 lower end of jaw body and the wedge-shaped groove of centering box cupling 6 realizes centering cover 3, right
Middle matrix 5 and docking 7 underground of claw quickly capture centering box cupling 6；Finally, continue decentralization mining bar 1,4, helical tooth blender
In on the intercepter plate of centering box cupling 6, the roofbolt weight of entire mining bar 1 is applied to centering cover 3 according to box cupling by mining bar 1
Top, thus under 1 gravity of mining bar, centering cover 3, centering matrix 5 and docking claw 7 continue axially towards moving down
It is dynamic, until the annular concave ditch of jaw body 19 is matched with the cone cell snap ring of centering box cupling 6, while the cone cell claw of jaw body 19 and
The annular concave ditch of centering box cupling 6 matches.
In Figure 10, coal bed gas well mining is pumped in the real-time centering work flow in underground of jack catchs type helical tooth centralising device,
Well liquid above mining pump plunger is via inflow jaw body 19 and mining bar after each speed-raising runner speedup of 6 intercepter plate of centering box cupling
In 1 toroidal cavity, then the pipe running system of pipe running system of the well liquid successively through centering bushing 17 and jaw body 19 and enter pair
In the ring cavity inner wall of middle base tube 12；Then, the inverted cone shape guide face of the agitated base tube 11 of well liquid smoothly imports between helical tooth 10
In tooth socket, then well liquid and the contact area of helical tooth 10 change from small to big before this and form stable liquid film, and rear well is sufficiently stirred
The contact area of liquid and helical tooth 10 gradually becomes smaller and smoothly exports the tooth socket of helical tooth 10, while well liquid is via helical tooth 10
Tooth socket smoothly imports in centering housing 9, thus prevents low submergence operating condition coal dust from depositing above the plunger that mining pumps；So
Afterwards, the well liquid in centering housing 9 flows through each jet nozzle 8 and its stream pressure is promoted, while well liquid is injected by jet nozzle 8 and arranged
The annular space of bar 1 and mining pipe 2 is adopted, thus prevents low submergence operating condition coal dust from depositing above to middle cover 3；Herein
In operation process, the top of helical tooth blender 4 realizes upper limit through centering housing 9 and its bottom end is by under the realization of centering box cupling 6
Limit, while mining bar 1 and plunger are realized according to the bicylindrical prismatic pair between centering box cupling 6 and centering cover 3 and mining bar 1
The real-time centering in underground between pump barrel is pumped with mining.
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 coal bed gas well mining pumps jack catchs type helical tooth centralising device, according between centering cover and centering box cupling and mining bar
Bicylindrical prismatic pair and realize the real-time centering in underground between plunger and mining bar and pump barrel, centering cover, centering matrix, docking
From top to bottom sequentially coaxially the heart is arranged for claw and centering box cupling, helical tooth blender be placed in centering matrix and via centering cover and
Centering box cupling and realize bidirectionally limited, it is characterised in that:
One centering cover；The centering cover injects mining bar according to the well liquid that the jet nozzle of hierarchal arrangement inhales mining pumping
With the annular space of mining pipe, centering housing uses alms bowl sandwich type element, and center of top position is drilled with concentric with centering cover
Cylindricality duct, the jet hole of hierarchal arrangement is drilled on the shell of centering housing, and each jet hole is lined with jet nozzle respectively；Jet stream
Nozzle uses uniform thickness thin wall cylinder, and jet nozzle is successively set as cone cell cylinder and cylindrical barrel body, jet stream by centering casing interior outward
The cone cell cylinder of nozzle is using interior thick outer thin construction；
One helical tooth blender；The helical tooth blender uses helical tooth stirring technique, effectively prevent low submergence operating condition coal
Powder deposits above plunger, and stirring base tube uses long tube body, and outer ring surface is from top to bottom successively arranged the anti-vortex sheet of cone cell, column
Shape anchor ring and inverted cone shape guide face stir and are distributed along the circumference with helical tooth on the column anchor ring of base tube；The tooth trace of helical tooth is edge
The helix of the column anchor ring expansion of base tube is stirred, helical tooth is in isosceles trapezoid, helical tooth in the normal plane end face perpendicular to tooth trace
Crest top land be integrally presented anchor ring, and the anchor ring where its crest top land is from top to bottom followed successively by cone cell anchor ring, column anchor ring and falls
Cone cell anchor ring；
One centering matrix；The centering matrix uses cylindricality box body, and centering base tube uses long tube body, and outer ring surface uses ladder
Axis, the middle part of centering base tube outer ring surface from top to bottom set gradually column snap ring, column slide surface and tooth form pressure ring, centering base tube
Column slide surface on be milled with ring-shaped groove and upper zero shape ring of configuration in it, the stitching surface of centering base tube tooth form pressure ring is using sawtooth
Shape ring tooth；Centering gland uses thick-wall cylinder, and central part is drilled with cylindricality eyelet, and centering pipe nipple uses long tube body；
One docking claw；The docking claw uses jack catchs type docking technique, the outer ring surface of jaw body along axial direction from top to bottom according to
It is secondary to be equipped with column slide surface, annular concave ditch and cone cell claw, be milled on the column slide surface of jaw body ring-shaped groove and its in match
Zero shape ring is set down, the cone cell snap ring of configuration centering box cupling in the annular concave ditch of jaw body, the cone cell claw of jaw body was used along week
To uniformly distributed monomer, cone cell clip is arranged in the upper and lower ends of each cone cell claw, and the ring cavity inner wall of jaw body is equipped with positioning plate；Centering
Bushing uses thick-wall cylinder, and the pipe running system diameter of centering bushing and the pipe running system diameter of jaw body are equal, centering bushing
Upper surface uses zigzag ring tooth, the zigzag ring tooth of centering bushing and the axially symmetric arrangement of zigzag ring tooth of centering base tube
It is formed by toroidal cavity and configures L V-shaped ring, the section of L V-shaped ring is L-shaped, the section of upper zero shape ring and lower zero shape ring
It is rounded；
One centering box cupling；The centering box cupling uses thick-wall cylinder, and the top of ring cavity inner wall is equipped with wedge-shaped groove, centering box cupling
Wedge-shaped groove matched with the cone cell clip of jaw body lower end, the middle part of centering box cupling ring cavity inner wall along axial direction from top to bottom according to
It is secondary to be equipped with cone cell snap ring, annular concave ditch and intercepter plate, the cone cell claw of configuration jaw body, centering in the annular concave ditch of centering box cupling
The central part of box cupling intercepter plate is drilled with cylindricality duct, and the outer rim of centering box cupling intercepter plate is equipped with the speed-raising stream being evenly distributed
Road.
2. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: the coal
Axial symmetry box body is integrally presented in layer gas well mining pump jack catchs type helical tooth centralising device, it is connected to mining pipe by centering box cupling
Bottom end, while mining bar sequentially pass through centering cover, helical tooth blender and centering box cupling and with mining pump plunger be connected.
3. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described right
Middle cover can effectively prevent low submergence operating condition coal dust to deposit above to middle housing, the cylindricality duct of centering housing and row
It adopts precision-fit between the outer ring surface of bar and constitutes cylinder prismatic pair, each layer jet hole of centering housing is uniformly distributed circumferentially,
Each layer jet hole slant setting and angle between its axis and horizontal plane is sequentially increased from bottom to top along axial direction is located at top layer jet stream
Keeping parallelism between the axis in hole and the axis of centering cover, each jet hole is using the ladder surface of revolution and interior thick outer thin；
The specification of each jet nozzle of the centering cover is identical with structure, and the cone cell cylinder and cylindrical barrel body of jet nozzle use
Concentric arrangement, the small end disc diameter of the conical surface where jet nozzle cone cell cylinder inboard wall are equal to column where its cylindrical barrel body inner wall
The diameter in face, and the cone cell cylinder inboard wall of jet nozzle and its cylindrical barrel body inner wall junction were carried out using streamlined curved surface
It crosses, thus the intracorporal well liquid of centering cover is via the annular space for injecting mining bar and mining pipe after the pressurization of each jet nozzle.
4. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: the spiral shell
Upper limit is realized through centering cover in the top for revolving tooth blender and lower limit is then realized by centering box cupling in its bottom end, stirs base tube
It is gap-matched between ring cavity inner wall and the outer ring surface of mining bar, stirs the inverted cone shape guide face of base tube for well liquid is smooth
Well liquid after the anti-vortex sheet of cone cell for importing in the tooth socket of spiral between cog, and stirring base tube is used to stir is suitable by the tooth socket of helical tooth
Benefit imports in centering cover and well liquid is avoided to generate vortex, and the taper of the conical surface falls greater than it where stirring the anti-vortex sheet of cone cell of base tube
The taper of the conical surface where cone cell guide face, while the small end disc diameter of the conical surface is equal to it where the anti-vortex sheet of cone cell for stirring base tube
The small end disc diameter of the conical surface where inverted cone shape guide face.
5. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: the spiral shell
The surface of helical tooth need to carry out nickel-plated phosphor processing in rotation tooth blender, between the evolute of helical tooth tooth trace and the axis for stirring base tube
Angle be tooth trace angle, the tooth trace angle of helical tooth is inhaled the reduction of well liquid viscosity with mining pumping and is increased；Helical tooth normal plane end face
Width face outwardly and its leptoprosopy inwardly, the height of helical tooth normal plane end face was gradually increased before this along tooth trace and then remained unchanged, and
Be gradually reduced in the end of tooth trace, the cone cell anchor ring and inverted cone shape anchor ring of helical tooth respectively with stirring base tube the anti-vortex sheet of cone cell and
Inverted cone shape guide face is corresponding, and thus well liquid and the contact area of helical tooth were changed from small to big before this to form stable liquid film,
The contact area that rear well liquid and helical tooth is sufficiently stirred gradually becomes smaller and is smoothly exported the tooth socket of helical tooth.
6. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described right
Middle matrix connect and keeps concentric arrangement, the diameter of centering base tube ring cavity inner wall with centering cover and the docking claw Trinity
Greater than the diameter of cylinder where helical tooth column anchor ring, the column snap ring of centering base tube realizes the axial direction of centering gland by the shaft shoulder
Positioning, the inside and outside anchor ring of the ring-shaped groove hierarchal arrangement of centering base tube, centering base tube tooth form pressure ring are all made of cylinder；
It is gap-matched between the cylindricality eyelet of the centering gland and the column snap ring of centering base tube, the outer ring of centering gland
Face diameter is greater than the outer ring surface diameter of centering housing and is less than the internal diameter of mining pipe；The both ends of centering pipe nipple pass through leakproofness pipe spiral shell
Line is connected with centering gland and jaw body respectively, smart between the ring cavity inner wall of centering pipe nipple and the column slide surface of centering base tube
Close fit and constitute cylinder prismatic pair.
7. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described right
The underground rapid abutting joint that claw realizes centering cover and centering matrix and centering box cupling is connect, the ring-shaped groove of jaw body is layered row
Column, precision-fit between the column slide surface of jaw body and the ring cavity inner wall of centering box cupling and constitute cylinder prismatic pair, jaw body
The end faces of each cone cell claw two sides be plane, and the end face of each cone cell claw two sides intersects at the axis of docking card pawl, cone
The cone cell clip of shape claw lower end realizes that claw is docked during the butt-joint operation of underground quickly captures centering box cupling, and cone cell claw
The cone cell clip of upper end then realizes the axial restraint of docking claw after the butt-joint operation of underground；The positioning plate of jaw body realizes that centering is short
The axially position of section and centering bushing simultaneously connects each cone cell claw, while the positioning plate central part of jaw body is drilled with cylindrical stream
Road.
8. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described right
It connects precision-fit between the outer ring surface of the centering bushing of claw and the ring cavity inner wall of centering pipe nipple and constitutes cylinder prismatic pair, centering
The central part of bushing is drilled with pipe running system, and the pipe running system diameter of centering bushing is less than the diameter of centering base tube ring cavity inner wall；
The zigzag ring tooth of centering bushing and the tight L V-shaped ring of the zigzag ring toothholder of centering base tube generate radial deformation and form metal
Sealing, the sealing being achieved between docking claw and centering matrix.
9. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described right
The L V-shaped ring of claw is connect using single-layer metal sealing ring, lower zero shape ring uses three layers of nonmetallic sealing ring, centering matrix
Upper zero shape ring is using the double-deck nonmetallic sealing ring；The ring cavity inner wall of L V-shaped ring is respectively and inside and outside centering base tube tooth form pressure ring
Anchor ring matches and forms sealing surface, and the ring cavity inner wall of the outer ring surface of L V-shaped ring and centering pipe nipple cooperates and formed and sealed
Face.
10. coal bed gas well mining according to claim 1 pumps jack catchs type helical tooth centralising device, it is characterised in that: described
Centering box cupling completes the speed-raising of well liquid above mining pump plunger, the outer ring surface of centering box cupling pass through conical leakproofness pipe screw thread with
Mining pipe is connected, and the lower part of centering box cupling ring cavity inner wall passes through conical leakproofness pipe screw thread and is connected with the pump barrel that mining pumps
It connects；Anchor ring where the wedge-shaped groove of centering box cupling is in inverted cone surface, and the section of centering box cupling cone cell snap ring is trapezoidal, centering box cupling
Cylindricality duct and centering housing cylindricality duct concentric arrangement from bottom to top, and the cylindricality duct of centering box cupling and mining bar
Outer ring surface between precision-fit and constitute cylinder prismatic pair, thus between centering box cupling and centering cover and mining bar formed sliding
The identical bicylindrical prismatic pair in direction；Each speed-raising runner of centering box cupling intercepter plate uses up-narrow and down-wide construction, thus mining
Well liquid flows into centering matrix via after each speed-raising runner speedup above pump plunger.
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| CN201810889276.8A CN108953132B (en) | 2018-08-07 | 2018-08-07 | Coal bed gas well mining pumps jack catchs type helical tooth centralising device |
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| CN201810889276.8A CN108953132B (en) | 2018-08-07 | 2018-08-07 | Coal bed gas well mining pumps jack catchs type helical tooth centralising device |
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| CN108953132A true CN108953132A (en) | 2018-12-07 |
| CN108953132B CN108953132B (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111456931A (en) * | 2020-04-15 | 2020-07-28 | 青岛理工大学 | Dynamic-fixed combined three-cylinder double-helix centering plug valve integrated cone valve pump |
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| CN111456931B (en) * | 2020-04-15 | 2021-09-07 | 青岛理工大学 | Dynamic-fixed combined three-cylinder double-helix centering plug valve integrated cone valve pump |
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| CN108953132B (en) | 2019-11-12 |
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