CN108194038A - It is exclusively used in the optical-rod clamp of surfacing alloy coating pumping rod/polish rod - Google Patents
It is exclusively used in the optical-rod clamp of surfacing alloy coating pumping rod/polish rod Download PDFInfo
- Publication number
- CN108194038A CN108194038A CN201810163537.8A CN201810163537A CN108194038A CN 108194038 A CN108194038 A CN 108194038A CN 201810163537 A CN201810163537 A CN 201810163537A CN 108194038 A CN108194038 A CN 108194038A
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- Prior art keywords
- rod
- optical
- metal pedestal
- pedestal layer
- polish
- Prior art date
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- 239000011248 coating agent Substances 0.000 title claims abstract description 88
- 238000000576 coating method Methods 0.000 title claims abstract description 88
- 238000005086 pumping Methods 0.000 title claims abstract description 84
- 239000000956 alloy Substances 0.000 title claims abstract description 43
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 83
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000007769 metal material Substances 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 239000004411 aluminium Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 244000137852 Petrea volubilis Species 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000008199 coating composition Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 66
- 239000003921 oil Substances 0.000 description 16
- 238000013461 design Methods 0.000 description 13
- 208000037656 Respiratory Sounds Diseases 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/06—Elevators, i.e. rod- or tube-gripping devices
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
It is exclusively used in the optical-rod clamp of surfacing alloy coating pumping rod/polish rod, including front plate, rear plate and bolt, the bolt clamps the surfacing alloy coating pumping rod/polish rod after the front plate is connected with rear plate, further include metal pedestal layer, the metal pedestal layer is circular arc based plate, it cooperates with the clamping plate, and the metal pedestal layer has outer in the lower edges of short transverse, the material of the metal pedestal layer is simple metal material, the clamping plate inner face is arc-shaped, there is the card tooth of protrusion on the clamping plate inner face, the card tooth in block form Disjunct distribution on the clamping plate inner face.This optical-rod clamp easy processing, processing technology and coating composition to polished rod etc. does not limit, equally effective for uncoated common oil pumping polish rod, is suitable for large-scale promotion.The fatigue fracture of the surfacing coating pumping rod/polish rod caused by clamping can effectively be solved.
Description
Technical field
The present invention relates to petroleum tools, are more particularly to a kind of polish rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod
Son.
Background technology
Oil pumping polish rod is one of component of oil field artificial lift oil recovery most critical, in order to solve abrasion and etching problem,
Surfacing ni base alloy coating oil pumping polish rod is all recommended in 5029 standard of API 11B and SY/T.But for this kind of surfacing
For alloy coating pumping rod/polish rod, fatigue fracture becomes the main problem of puzzlement ni base alloy coating oil pumping polish rod failure.It is existing
In some research, mostly start with to solve its FATIGUE FRACTURE PROBLEMS from oil pumping polish rod angle, first, pumping using high-fatigue strength
Polished rod base material；Second is that the alloy coat ingredient to surfacing is adjusted, make the toughness of coating be improved；Third, to oil pumping polish rod
It is optimized with the treatment process of base material.
But in fact, optical-rod clamp equally significantly affects the fatigue fracture of surfacing coating pumping rod/polish rod.Polish rod clamp
Son is the key that connection pumping unit horsehead and polished rod petroleum tool, arc-shaped inner surface clamping plate and bolt is generally included, by polished rod
It is placed among former and later two clamping plates, is fastened former and later two clamping plates by bolt, so as to fulfill the clamping to oil pumping polish rod.
Optical-rod clamp is broadly divided into two major class, and one kind is that clamping plate inner face by card tooth carries out polished rod surface seizing realize to polished rod
Fastening, stress concentration caused by the seizing trace that wherein card tooth forms polished rod surface all can become fatigue crack source, especially
Be surfacing coating polished rod influence it is especially pronounced；It is another kind of be clamping plate inner face without card tooth, but by clamping plate apply pressure
The clamping of polished rod is realized, due to being held tightly simply by smooth surface to polished rod, it is therefore desirable to apply very high stress
It will not skid, such high stress can equally cause surfacing coating pumping rod/polish rod tired source occur.Statistics find, optical-rod clamp and
The bending stress concentrated area in the range of 10 centimeters is the oil pumping light including common polished rod and surfacing coating polished rod below
The occurrence of location of bar fatigue fracture.One of the main reasons for this is exactly that the clamping of optical-rod clamp can occur surfacing alloy coat surface
Stress concentration, and alloy coat hardness is relatively high, is easy to cracked under the deformation conditions such as clamping or bending, and due to applying
Metallurgical binding between layer and matrix will quickly extend after crack propagation enters polished rod base material surface layer in intrinsic silicon,
So as to cause the generation of fatigue fracture.And the existing research about optical-rod clamp can not effectively solve to draw due to the clamping of clamp
The FATIGUE FRACTURE PROBLEMS of the surfacing coating pumping rod/polish rod risen.
Invention content
The technical problems to be solved by the invention are to overcome the deficiency of the above-mentioned prior art, provide a kind of specifically for spray
Solder alloy coating pumping rod/polish rod can effectively solve the polish rod clamp of the fatigue fracture of surfacing coating pumping rod/polish rod caused by clamping
Son.
According to a kind of optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod provided by the invention, including front plate,
Rear plate and bolt, the bolt carry out the surfacing alloy coating pumping rod/polish rod after the front plate is connected with rear plate
Clamping, the main technical schemes used for：Metal pedestal layer is further included, the metal pedestal layer is circular arc based plate, with the folder
Plate cooperates, and the metal pedestal layer has outer in the lower edges of short transverse, and the material of the metal pedestal layer is pure
Metal material, the clamping plate inner face are arc-shaped, have the card tooth of protrusion on the clamping plate inner face, the card tooth is with block shape
Formula Disjunct distribution is on the clamping plate inner face.
It introduces metal pedestal layer in the present invention to be between optical-rod clamp and surfacing coating pumping rod/polish rod, the metal pedestal layer is set
Meter is substantially distinguished from existing optical-rod clamp.
The optical-rod clamp provided by the invention for being exclusively used in surfacing alloy coating pumping rod/polish rod, also using following attached technical side
Case：The top and bottom of the clamping plate inner face card tooth are 30-50 millimeters with the distance between clamping plate lower edges.It is logical
It crosses the design and avoids design of the card tooth in clamp edge, can alleviate due to stress caused by the clamping plate inner face card tooth
Collection is neutralized since the transition of the complete stress concentration in optical-rod clamp edge is superimposed, and reduces the optical-rod clamp to a certain extent
The stress concentration of upper and lower edge surfacing coating pumping rod/polish rod.
The card tooth of the front plate and the rear plate inner surface is spaced in block form to be alternately arranged so that
The optical-rod clamp becomes discontinuous to the clamping on surfacing coating pumping rod/polish rod surface, and each group of block of the card tooth is complete
Unanimously, as a structural unit, after the front and rear Boards wall, the oil pumping polish rod surface is any by seizing cross section pair
The equal length of the card tooth is answered, so as to ensure that the stress concentration of optical-rod clamp retaining part is relatively uniform.
Spacing between the clamping plate inner face card tooth block on the cleat heights direction is 20-30 mm.The design
The optical-rod clamp can equally be caused to become discontinuous to the clamping on surfacing coating pumping rod/polish rod surface.
The material of the metal pedestal layer is fine copper, and the material of the metal pedestal layer is alternatively fine aluminium, by mass percentage
The purity of meter, the fine copper and fine aluminium is not less than 99%.
The fine copper and fine aluminium are face-centred cubic structure, and its elongation percentage, not less than 50%, the contraction percentage of area is not less than
70%.Select the fine copper of face-centred cubic structure and fine aluminium that can obtain the structure of easy glide deformation, while elongation percentage and section shrinkage
The index restriction of rate has also further ensured that the plasticity and ductility of the fine copper and fine aluminium, it is ensured that real-time in clamping process
Deformation when the card tooth generates plastic deformation to the surfacing coating pumping rod/polish rod surface, can in time produce coating surface
Raw crackle is covered and is adhered to, and obstruction and the inhibition of On Crack Propagation are realized using its good ductility.
The thickness of the metal pedestal layer must not exceed the height of the card tooth of the clamping plate inner face.The design ensures
When clamping the surfacing coating pumping rod/polish rod, the card tooth can be gone back the optical-rod clamp after the metal pedestal layer is increased
It can effectively realize to the seizing of the surfacing coating pumping rod/polish rod surface, while the seizing metal pedestal layer in the process of card tooth is real-time
Deformation is it is also possible that metal pedestal layer is bonded in entire holding area with the realization of surfacing alloy coating pumping rod/polish rod comprehensively.
The metal pedestal layer be disposable product, not reproducible use.The modeling needed to have due to the metal pedestal layer
Property deformability, and pass through the deformed metal pedestal layer plastic deformation can be deteriorated, therefore the metal pedestal layer cannot
It reuses.
The application method of the optical-rod clamp provided by the invention for being exclusively used in surfacing alloy coating pumping rod/polish rod, including following step
Suddenly：
（1）By oil pumping polish rod portion faces thorough cleaning greasy dirt to be held, greasy dirt is prevented to metal pedestal layer effect effect described in the later stage
The influence of fruit；
（2）It treats retaining part to be processed by shot blasting, its surface roughness is made to be no more than 0.1 micron, the setting of the roughness can
So that metal pedestal layer fitting closely between the surfacing coating pumping rod/polish rod under the optical-rod clamp squeezing action；
（3）The metal pedestal layer and clamping plate are cooperated, are fitted in the surfacing alloy coating pumping rod/polish rod portion to be held
Position surface, is then disposably fixedly attached to the metal pedestal layer surface with the bolt by the front plate and rear plate；
（4）When being clamped again to the clip position of same polished rod, first with sand paper and tool by oil pumping polish rod retaining part table
The metal pedestal layer material of face remnants adherency is cleaned out, and avoids two layers between kish bed course and new metal pedestal layer
Skin effect；
（5）It, first will be in the clamping plate of the optical-rod clamp with sand paper and tool when being clamped again using same optical-rod clamp
The metal pedestal layer material of surface residual adherency is cleaned out, and can be made again after the metal pedestal layer more renewed
With.
According to a kind of optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod provided by the invention, with prior art phase
Than having the following advantages that：
1st, the optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod of the invention is taken out for the first time in optical-rod clamp and surfacing coating
Metal pedestal layer is introduced among glossy bar, the clamping to surfacing alloy coating pumping rod/polish rod has been taken into account and its anti-fatigue performance is changed
It is kind.The present invention introduces metal pedestal layer among optical-rod clamp and surfacing coating pumping rod/polish rod for the first time, and the angle completely new from one is come
Realize effective inhibition that formation of crack is formed and extended in card tooth clamping process.Metal pedestal layer takes full advantage of fine copper and fine aluminium extension
Rate and the contraction percentage of area all excellent characteristics, elongation percentage are not less than 50%, and the contraction percentage of area is not less than 70%, place it in described
Between optical-rod clamp and surfacing coating pumping rod/polish rod, real-time deformation can be easily achieved when the card tooth clamps so that card
Tooth can be seizing to the progress of polished rod surface rapidly, but to the beginning to the metal pedestal layer eventually all by the card tooth and the coating surface
It is separated, reduces direct destruction and the stress concentration degree of seizing position coating surface, and for there is the light of microfissure
Bar coating surface, the metal pedestal layer, which can be realized, timely to be covered and adheres to, and particularly coating surface crackle generating unit is
Fresh surface, surface can be very high, and its it is corresponding just be also the metal pedestal layer formed under card tooth squeezing action it is new
Fresh metal surface, the binding force between two kinds of fresh surfaces is strong, can be realized while crackle occurs two kinds of fresh surfaces it
Between combination, alleviate crack-tip stress concentration while, inhibit the extension of crackle.
2nd, the optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod of the invention, by being set to cleat surface card tooth
Meter so that crack propagation caused by surfacing coating polished rod is clamped position stress concentration, which obtains pinning formula, effectively contains.The present invention
In card tooth be distributed in block form, between any two block in the circumferential direction and length direction of clamping plate circular arc inner surface
It is spaced apart so that the stress concentration that the surfacing coating pumping rod/polish rod surface is born is discontinuous, and metal pedestal layer can be
Barrier is formed between card tooth block, the real-time deformation during the blessing of card tooth forms compression to card tooth block edges, hinders not
With the interconnection that coating polished rod face crack is corresponded between block；For the corresponding coating polished rod surface of card tooth retaining part
Speech, the timely covering and adherency of the crack-tip that metal pedestal layer forms card tooth in coating surface, realizes each card tooth block
The metal pedestal layer on surface all becomes the obstruction point place that coating surface crackle is formed and extended, and is distributed the original with pinning by multiple spot
Reason effectively realizes obstruction and the inhibition of formation and the extension to crackle.
3rd, the optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod of the invention, can be with by the design of metal pedestal layer
It realizes good fit with clamping plate.The metal pedestal layer of the present invention is real with clamping plate inner face well by the design of arcuate surface
It is now bonded, and the metal pedestal layer has outer in the lower edges of short transverse, it can be with clamping plate inner face short transverse two
The card tooth edge at end forms cooperation, facilitates positioning when starting installation.
4th, the optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod of the invention, using fine copper and fine aluminium as metal
Bed course, at low cost, easy processing, processing technology and coating composition to polished rod etc. do not limit, for uncoated common pumping
Glossy bar is equally effective, is suitable for large-scale promotion.
Description of the drawings
Fig. 1 is the optical-rod clamp overall structure diagram of the present invention.
Fig. 2 is the optical-rod clamp clamping plate cross-sectional structure schematic diagram of the present invention.
Fig. 3 is the optical-rod clamp fore-clamp plate structure schematic diagram of the present invention.
Fig. 4 is the optical-rod clamp rear plate structure diagram of the present invention.
Fig. 5 is the optical-rod clamp metal pedestal layer structure diagram of the present invention.
Fig. 6 is the optical-rod clamp metal pedestal layer cross-sectional structure schematic diagram of the present invention.
Specific embodiment
Referring to Fig. 1 to Fig. 6, according to a kind of polish rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod provided by the invention
Son, including front plate 1, rear plate 2 and bolt 3, the bolt 3 front plate 1 and rear plate 2 are connected after to the surfacing
Alloy coating pumping rod/polish rod 4 is clamped, the main technical schemes used for：Further include metal pedestal layer 5, the metal pedestal layer
5 be circular arc based plate, is cooperated with the clamping plate 1,2, and the metal pedestal layer 5 is outside the lower edges of short transverse have
Along 51, the material of the metal pedestal layer 5 is simple metal material, and the clamping plate 1,2 inner surfaces are arc-shaped, in the clamping plate 1,2
Have on surface protrusion card tooth 6, the card tooth 6 in block form Disjunct distribution on the clamping plate 1,2 inner surfaces.
It introduces metal pedestal layer 5 in the present invention to be between optical-rod clamp and surfacing coating pumping rod/polish rod 4, the metal pedestal layer
5 designs are substantially distinguished from existing optical-rod clamp.
The clamping plate 1,2 inner surface card teeth 6 top and bottom be with the distance between the clamping plate 1,2 lower edges
30-50 millimeters.Design of the card tooth in clamp edge is avoided by the design, can be alleviated due to the clamping plate inner face card
Stress concentration caused by tooth and the transition superposition due to the complete stress concentration in optical-rod clamp edge, reduce to a certain extent
The stress concentration of the upper and lower edge surfacing coating pumping rod/polish rod of optical-rod clamp.
The card tooth 6 of 2 inner surface of the front plate 1 and the rear plate is spaced in block form to be alternately arranged,
So that the optical-rod clamp becomes discontinuous to the clamping on surfacing coating pumping rod/polish rod surface, each group of block of the card tooth 6
It is completely the same, as a structural unit, after the front and rear Boards wall, between the card tooth by two cleat surfaces
It cooperates, makes any equal length that the card tooth is corresponded to by seizing cross section in the oil pumping polish rod surface, so as to true
The stress concentration for protecting optical-rod clamp retaining part is relatively uniform.
Spacing between the clamping plate 1,2 inner surface card tooth blocks on the cleat heights direction is 20-30 mm.It should
Design can equally cause the optical-rod clamp to be clamped in radial and axial all become not to surfacing coating pumping rod/polish rod surface
Continuously.
The material of the metal pedestal layer 5 is fine copper, and the material of the metal pedestal layer 5 is alternatively fine aluminium, contains by quality percentage
The purity of gauge, the fine copper and fine aluminium is not less than 99%.The fine copper and fine aluminium are face-centred cubic structure, and it extends
Rate is not less than 50%, and the contraction percentage of area is not less than 70%.Select the fine copper of face-centred cubic structure and fine aluminium that can obtain easy glide change
The structure of shape, at the same the restriction of the index of elongation percentage and the contraction percentage of area also further ensured that the fine copper and fine aluminium plasticity and
Ductility, it is ensured that the real-time deformation in clamping process, when the card tooth generates modeling to the surfacing coating pumping rod/polish rod surface
Property deformation when, the crackle that can be generated in time to coating surface is covered and is adhered to, and is realized using its good ductility
The obstruction of On Crack Propagation and inhibition.The metal pedestal layer is to beginning to eventually all the card tooth and the coating surface is divided
Every, the stress concentration degree of seizing position coating surface is reduced, and for there is the polish rod coating surface of microfissure, the gold
Timely covering can be realized and adhere to by belonging to bed course, alleviate the stress concentration of crack-tip, so as to inhibit the extension of crackle.
The thickness of the metal pedestal layer 5 must not exceed the height of the card tooth 6 of the clamping plate inner face.The design makes really
The optical-rod clamp is protected when clamping the surfacing coating pumping rod/polish rod, the card tooth can increase the metal pedestal layer
It can also be effectively realized afterwards to the seizing of the surfacing coating pumping rod/polish rod surface.
The metal pedestal layer 5 be disposable product, not reproducible use.
The block type of more than card tooth is spaced apart design and the design of metal pedestal layer thickness so that metal pedestal layer can be real
Existing block type pinning, timely covering and adherency to the crack-tip that card tooth is formed in coating surface, realizes each Ka Ya area
All become the obstruction point place that coating surface crackle is formed and extended around block, be distributed by multiple spot effectively real with the principle of pinning
The now obstruction to the formation of crackle and extension and inhibition.
The application method of the optical-rod clamp provided by the invention for being exclusively used in surfacing alloy coating pumping rod/polish rod, including following step
Suddenly：
（1）By 4 portion faces thorough cleaning greasy dirt to be held of surfacing coating pumping rod/polish rod, greasy dirt is prevented to metal gasket described in the later stage
The influence of 5 function and effect of layer；
（2）It treats retaining part to be processed by shot blasting, its surface roughness is made to be no more than 0.1 micron, the setting of the roughness can
So that the fitting closely between the surfacing coating pumping rod/polish rod 4 under the optical-rod clamp squeezing action of metal pedestal layer 5；
（3）The metal pedestal layer and clamping plate are cooperated, are fitted in the surfacing alloy coating pumping rod/polish rod portion to be held
Position surface, is then disposably fixedly attached to the metal pedestal layer surface with the bolt by the front plate and rear plate；
（4）When being clamped again to the clip position of same polished rod, first with sand paper and tool by oil pumping polish rod retaining part table
The metal pedestal layer material of face remnants adherency is cleaned out, and avoids two layers between kish bed course and new metal pedestal layer
Skin effect；
（5）It, first will be in the clamping plate of the optical-rod clamp with sand paper and tool when being clamped again using same optical-rod clamp
The metal pedestal layer material of surface residual adherency is cleaned out, and can be made again after the metal pedestal layer more renewed
With.
In order to preferably examine actual effect, this of NiCrBSi alloy coats is prepared using 35CrMo steel substrates surface
The common alloy coating pumping rod/polish rod material object in oil field has carried out the present invention as sample on 810.15 type fatigue testers of MTS
Optical-rod clamp and the high stress acceleration contrast test without the common optical-rod clamp of metal pedestal layer, simulate it during being actually on active service
Effect.500 mm of specimen length, 25.4 mm of diameter, stress condition：700 MPa, 4 Hz, R=0.1, sine wave are realized to sample
21 MPa of specimen holder lateral force during complete firm grip is respectively adopted 10 samples and carries out contrast test, as a result, it has been found that, no gold
When belonging to the common optical-rod clamp clamping of bed course, sample fatigue fracture position is all in optical-rod clamp region, wherein 2 break in clamp
Bottom Ka Yachu, 8 card tooth edges to break among optical-rod clamp retaining part, tired cycle are below 90,000 times；Using this
After the optical-rod clamp of invention（Metal pedestal layer uses fine aluminium）, there are 4 sample fractures to be happened at optical-rod clamp with the sample of exterior domain
Intermediate position, tired cycle reach 350,000 times or more, show influence that optical-rod clamp clamping generates coating polished rod by
Invention optical-rod clamp to removal, has 6 to be equally happened at optical-rod clamp region completely, but with the common polish rod clamp of no metal pedestal layer
Son is compared, and fatigue fracture cycle reaches 20-30 ten thousand times, shows that the optical-rod clamp of the present invention is substantially reduced and inhibited due to card
Tooth is clamping of the joint the generation and extension of gold plating oil pumping polish rod surface fatigue crackle, can effectively improve the tired of coating pumping rod/polish rod
The labor service life, and by carrying out specimen surface after the test it has been observed that coating surface cracks are by the pure aluminum metal
Course is completely covered and adheres, and fine aluminium bed course metal can not tear with external force point in card tooth retaining part
From finding that fine aluminium course has been introduced into certain depth in fracture plane, and and fracture for the observation of fracture site
Plane fitting is close.Therefore the optical-rod clamp provided by the invention for being exclusively used in surfacing alloy coating pumping rod/polish rod can be effective
The fatigue fracture of the surfacing coating pumping rod/polish rod caused by clamping is solved, especially suitable for surfacing alloy coating pumping rod/polish rod.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding these embodiments can be changed without departing from the principles and spirit of the present invention, the scope of the present invention by
The following claims and their equivalents limit.
Claims (9)
1. being exclusively used in the optical-rod clamp of surfacing alloy coating pumping rod/polish rod, including front plate, rear plate and bolt, the bolt will
The front plate clamps the surfacing alloy coating pumping rod/polish rod after being connected with rear plate, which is characterized in that further includes
Metal pedestal layer, the metal pedestal layer are circular arc based plate, are cooperated with the clamping plate inner face, and the metal pedestal layer is in height
The lower edges in degree direction have outer, and the material of the metal pedestal layer is simple metal material, and the clamping plate inner face is circular arc
Shape, there is the card tooth of protrusion on the clamping plate inner face, the card tooth in block form Disjunct distribution on the clamping plate inner face.
2. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
The top and bottom of clamping plate inner face card tooth are 30-50 millimeters with the distance between clamping plate lower edges.
3. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
The card tooth of front plate and the rear plate inner surface is spaced in block form to be alternately arranged, each group of the card tooth
Block is completely the same, and as a structural unit, after the front and rear Boards wall, the oil pumping polish rod surface is any by card
Sting the equal length that cross section corresponds to the card tooth.
4. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
Spacing between clamping plate inner face card tooth block on the cleat heights direction is 20-30 mm.
5. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
The material of metal pedestal layer be fine copper, the material of the metal pedestal layer is alternatively fine aluminium, based on mass percentage, the fine copper and
The purity of fine aluminium is not less than 99%.
6. the optical-rod clamp according to claim 5 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
Fine copper and fine aluminium are face-centred cubic structure, and its elongation percentage, not less than 50%, the contraction percentage of area is not less than 70%.
7. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
The thickness of metal pedestal layer must not exceed the height of the card tooth of the clamping plate inner face.
8. the optical-rod clamp according to claim 1 for being exclusively used in surfacing alloy coating pumping rod/polish rod, which is characterized in that described
Metal pedestal layer is disposable product, not reproducible use.
9. the user of the optical-rod clamp for being exclusively used in surfacing alloy coating pumping rod/polish rod described in claim 1-8 any one
Method includes the following steps：
（1）By oil pumping polish rod portion faces thorough cleaning greasy dirt to be held；
（2）It treats retaining part to be processed by shot blasting, its surface roughness is made to be no more than 0.1 micron；
（3）The metal pedestal layer and clamping plate are cooperated, are fitted in the surfacing alloy coating pumping rod/polish rod portion to be held
Position surface, is then disposably fixedly attached to the metal pedestal layer surface with the bolt by the front plate and rear plate；
（4）When being clamped again to the clip position of same polished rod, first with sand paper and tool by oil pumping polish rod retaining part table
The metal pedestal layer material of face remnants adherency is cleaned out；
（5）It, first will be in the clamping plate of the optical-rod clamp with sand paper and tool when being clamped again using same optical-rod clamp
The metal pedestal layer material of surface residual adherency is cleaned out, and can be made again after the metal pedestal layer more renewed
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163537.8A CN108194038B (en) | 2018-02-27 | 2018-02-27 | Polish rod clip special for spray welding alloy coating oil pumping polish rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163537.8A CN108194038B (en) | 2018-02-27 | 2018-02-27 | Polish rod clip special for spray welding alloy coating oil pumping polish rod |
Publications (2)
| Publication Number | Publication Date |
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| CN108194038A true CN108194038A (en) | 2018-06-22 |
| CN108194038B CN108194038B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163537.8A Active CN108194038B (en) | 2018-02-27 | 2018-02-27 | Polish rod clip special for spray welding alloy coating oil pumping polish rod |
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| CN109209342A (en) * | 2018-10-19 | 2019-01-15 | 北京工商大学 | A kind of oil pumping polish rod face crack real-time detection apparatus |
| CN111550196A (en) * | 2020-05-10 | 2020-08-18 | 北京工商大学 | Bending fatigue resistant steel oil pumping polished rod and processing technology thereof |
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| CN111550196A (en) * | 2020-05-10 | 2020-08-18 | 北京工商大学 | Bending fatigue resistant steel oil pumping polished rod and processing technology thereof |
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|---|---|
| CN108194038B (en) | 2024-03-12 |
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