CN105864028B - Replaceable prefastening mud piston and its method for dismounting - Google Patents
Replaceable prefastening mud piston and its method for dismounting Download PDFInfo
- Publication number
- CN105864028B CN105864028B CN201610291942.9A CN201610291942A CN105864028B CN 105864028 B CN105864028 B CN 105864028B CN 201610291942 A CN201610291942 A CN 201610291942A CN 105864028 B CN105864028 B CN 105864028B
- Authority
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- China
- Prior art keywords
- mud
- piston
- ring
- dismounting
- hold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007790 scraping Methods 0.000 claims abstract description 33
- 125000003003 spiro group Chemical group 0.000 claims description 6
- 238000009827 uniform distribution Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 240000002791 Brassica napus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
- F04B2015/026—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous with a priming plunger or piston ahead of the pumping piston and connected on the same piston rod
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The invention provides a kind of replaceable prefastening mud piston and its method for dismounting, wherein replaceable prefastening mud piston, and it includes piston rod, piston head and seal assembly；Piston head is enclosed on the outer wall of piston rod；Seal assembly includes cartridge, hold-down ring and mud-scraping ring；Hold-down ring and mud-scraping ring are socketed in the outside of piston head and receiving space are formed between hold-down ring and mud-scraping ring respectively, and cartridge is enclosed on outside piston head and in the receiving space；Also be provided with dismounting screw on piston head, the dismounting screw to open up direction parallel with mud-scraping ring axis direction.The sealing property that not only ensure that piston is set up in the cooperation of piston rod, piston head and seal assembly of the present invention, the position of setting up for being included in all parts in seal assembly simultaneously coordinates with the dismounting screwhole position opened up on piston head, and then demolition part can be screwed in by the dismounting screw and seal assembly is rapidly separated piston head, reduce the take-down time.
Description
Technical field
The invention belongs to drilling prospection field, more particularly, to a kind of replaceable prefastening mud piston.
Background technology
At present, drilling mud pump piston is required to change cartridge after a certain period of use time.And in use,
Packing element is extruded repeatedly, its with piston head fit form from installing when gap with or slight interference amount coordinate, be changed into interference and match somebody with somebody
Close.Cause change packing element when very not side, considerably increase replacing construction.Especially with vulcanization rubber process piston with greater need for
Integral replacing piston assembly, cause the substantial increase of cost.In addition, after pot type piston cartridge uses a period of time, by
It can not be contacted well with cylinder sleeve in surface abrasion, lose sealing effectiveness.
The content of the invention
In view of this, the present invention is directed to propose a kind of replaceable prefastening mud piston, is effectively shortened with changing piston
The problem of piston replacing construction.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
Replaceable prefastening mud piston, it includes piston rod, piston head and seal assembly；
The piston head is enclosed on the outer wall of piston rod；
The seal assembly includes cartridge, hold-down ring and mud-scraping ring；
The hold-down ring and mud-scraping ring are socketed in the outside of piston head and formed between hold-down ring and mud-scraping ring and accommodated respectively
Space, the cartridge are enclosed on outside piston head and in the receiving space；
Fastener hole is provided with the hold-down ring end face, spring is provided with the fastener hole, the spring compresses by one
Part is compressed in the fastener hole and one end of the spring abuts with the bottom hole of fastener hole；
Dismounting screw is also provided with the piston head, the direction that opens up of the dismounting screw is put down with mud-scraping ring axis direction
OK.
Further, in addition to the end cap that is enclosed on outside piston rod, it is provided with the positioning connected with fastener hole on the end cap
Screwed hole, the compressing member screw in the positioning spiro pit and fix the relative position of end cap and hold-down ring.
Further, the cartridge includes fastening step, and the leave from office terrace of the fastening step is inclined-plane and institute
The distance for stating leave from office terrace to terrace of appearing on the stage is gradually reduced from inside to outside, and the lower end of the hold-down ring includes positioning convex, institute
Stating positioning convex has the positioning inclined-plane being bonded with leave from office terrace.
Further, the fastener hole is opened as in the positioning convex by the end face of hold-down ring.
Further, the mud-scraping ring is provided with the limited impression to cave inward in end corresponding with hold-down ring, described
Cartridge includes the spacing preiection to match with limited impression, and the spacing preiection is placed in limited impression.
Further, the piston head includes abutting step, and the abutting step abuts with the mud-scraping ring, described to support
Connect and the dismounting screw is provided with the step surface of step.
Further, Support tray is also cased with outside the piston head, the support plate mat is in the mud-scraping ring with abutting platform
Between rank.
Further, adjusting screw is screwed on the dismounting screw, the adjusting screw abuts with the Support tray.
Further, the bottom of the piston rod, which is stretched out on the outside and piston rod bottom of piston head, screws in nut, described
Nut is connected on the end cap.
Further, the cartridge is interference fitted with the piston head.
Further, the compressing member can be housing screw.
Relative to prior art, replaceable prefastening mud piston of the present invention has the advantage that：
The sealing that not only ensure that piston is set up in the cooperation of piston rod, piston head and seal assembly of the present invention
Can, while the position of setting up for all parts being included in seal assembly coordinates with the dismounting screwhole position opened up on piston head,
And then demolition part can be screwed in by the dismounting screw and seal assembly is rapidly separated piston head, reduce the take-down time.
Another object of the present invention is to propose a kind of method for dismounting of replaceable prefastening mud piston, to solve to make
The purpose of fast assembling-disassembling can be realized with this mud piston.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The method for dismounting of replaceable prefastening mud piston, its specific steps：
Adjusting screw and housing screw are unloaded in first step, rotation；
Second step, dismantle lower piston rod and end cap；
Third step, screws in the removal rod coordinated with the dismounting screw screw thread from dismounting screw, and the removal rod supports
It is connected on Support tray；
Four steps, removal rod is continued into rotation forces Support tray, mud-scraping ring, cartridge and hold-down ring, the support
The direction movement that disk, mud-scraping ring, cartridge and hold-down ring promote towards removal rod together, until mud-scraping ring disengaging piston head is
Only.
Further, under dismounting before adjusting screw and housing screw, it will first be used to limit adjusting screw and compress spiral shell
Follow closely the first back-up ring installed during position and the second back-up ring disassembles.
Further, the removal rod is demounting bolt.
Relative to prior art, the method for dismounting of replaceable prefastening mud piston of the present invention has following excellent
Gesture：
Method for dismounting of the present invention can will effectively and quickly have the dismounting of specifically-built mud piston
Finish, and only need to complete using an aid, and then reduce cost and the time of input.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the replaceable prefastening mud piston overall structure diagram described in the embodiment of the present invention；
Fig. 2 be the embodiment of the present invention described in replaceable prefastening mud piston method for dismounting in removal rod installation
Schematic diagram.
Description of reference numerals：
1- piston rods；2- first seals；The back-up rings of 3- first；4- adjusting screws；5- piston heads；6- Support tray；Scraped under 7-
Mud ring；8- cartridges；9- hold-down rings；10- springs；11- housing screws；The back-up rings of 12- second；13- end caps；14- second is sealed
Part；15- sealing rings；16- nuts；The spacing back-up rings of 17-；18- limited impressions；19- leave from office terraces；20- spacing preiections；21- is abutted
Step；22- dismantles screw；23- positions inclined-plane；24- positioning spiro pits；25- appears on the stage terrace；26- removal rods.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, replaceable prefastening mud piston, it includes piston rod 1, piston head 5 and seal assembly；
The piston head 5 is enclosed on the outer wall of piston rod 1；
The seal assembly includes cartridge 8, hold-down ring 9 and mud-scraping ring 7；
The hold-down ring 9 and mud-scraping ring 7 are socketed in the outside of piston head 5 and formed between hold-down ring 9 and mud-scraping ring 7 respectively
Receiving space, the cartridge 8 are enclosed on the outside of piston head 5 and in the receiving spaces；
Dismounting screw 22 is also provided with the piston head 5, the dismounting screw 22 opens up direction and the axis side of mud-scraping ring 7
To parallel.
Piston head 5 is enclosed on piston rod 1, is compacted by the first seal 2 and piston rod 1 of its bottom and is realized sealing.
End cap 13 is enclosed on piston rod 1 to be pressed by its embedded sealing ring 15 and the fitted seal of piston rod 1, its step surface
The upper end face seal 14 of piston head 5 realizes sealing.
Nut 16 uses to be threadedly coupled with piston rod 1 compresses end cap 13, spacing by spacing back-up ring 17.
Support tray 6 is enclosed on piston head 5 and is bonded with the step surface on the abutting step of piston head 5.
The cartridge 8 includes fastening step, and the leave from office terrace 19 of the fastening step is inclined-plane and the leave from office
The distance of terrace 19 to terrace 25 of appearing on the stage is gradually reduced from inside to outside, and the lower end of the hold-down ring 9 includes positioning convex 23, institute
Stating positioning convex 23 has the positioning inclined-plane being bonded with leave from office terrace 19.
The mud-scraping ring 7 is being provided with the limited impression 18 to cave inward, the fluid sealant with 9 corresponding end of hold-down ring
Cylinder 8 includes the spacing preiection 20 to match with limited impression 18, and the spacing preiection 20 is placed in limited impression 18.
Cartridge 8 is enclosed on piston head 5 by interference fit, and by nut 16, the compaction of end cap 13 and scrapes mud
Ring 7, hold-down ring 9 and Support tray 6 are tightly bonded.
Spring 10 is arranged on hold-down ring 9 in 8 of circumference uniform distribution or multiple fastener holes, by end cap 13
The compression of housing screw 11 in 8 of circumference uniform distribution or multiple positioning spiro pits produces compression stress, ensure cartridge 8 with it is living
Chock plug longer time gluing, sealing.
Piston head 5 is mounted with symmetrical two groups of uniform adjusting screws 4, applies certain upper top power to Support tray 6.
The special construction that cartridge 8, mud-scraping ring 7 and hold-down ring 9 use, can be such that cartridge 8 is bonded with piston head 5 close
Envelope is good, and with good stability placed in the middle and larger suction.
Assembly and disassembly methods are：
During installation, in the outer ring coating lubricating oil of piston head 5；
Then Support tray 6, mud-scraping ring 7, cartridge 8 and hold-down ring 9 are installed on piston head 5；
It is interference fit between cartridge 8 and piston head 5, uniformly presses down on or use glue after cartridge 8 is put just
Wooden mallet raps；
Then end cap 13 is covered, piston rod 1 is installed, adjust positioning spiro pit between end cap 13 and hold-down ring 9 and
Aligned position between fastener hole, nut 16 is twisted and compresses end cap 13 and is fixed with spacing back-up ring 17；
Finally installation spring 10, adjusting screw 4 and housing screw 11, the first-class back-up ring 12 of first back-up ring 3 and second, and then
Compress cartridge 8.
As shown in Fig. 2 dismounting when, lay down spacing back-up ring 17, nut 16, piston rod 1, end cap 13 and adjusting screw 3 and
Housing screw 11 etc., the removal rod 26 consistent with the screw thread of adjusting screw 4 is arranged on piston head 5, passes through worm drive, dismounting
Bar 26 withstands on Support tray 6 and pushes mud-scraping ring 7, cartridge 8 and hold-down ring 9 depart from piston head 5, realizes dismounting.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (9)
1. replaceable prefastening mud piston, it is characterised in that：Including piston rod (1), piston head (5) and seal assembly；
The piston head (5) is enclosed on the outer wall of piston rod (1)；
The seal assembly includes cartridge (8), hold-down ring (9) and mud-scraping ring (7)；
The hold-down ring (9) and mud-scraping ring (7) be socketed in the outside of piston head (5) respectively and hold-down ring (9) and mud-scraping ring (7) it
Between form receiving space, it is outside and in the receiving space that the cartridge (8) is enclosed on piston head (5)；
Fastener hole is provided with hold-down ring (9) end face, spring (10) is provided with the fastener hole, the spring (10) passes through
One compressing member is compressed in the fastener hole and one end of the spring (10) abuts with the bottom hole of fastener hole；
Dismounting screw (22) is also provided with the piston head (5), the dismounting screw (22) opens up direction and mud-scraping ring (7) axle
Line direction is parallel；
The cartridge (8) includes fastening step, and the leave from office terrace (19) of the fastening step is inclined-plane and the leave from office
The distance of terrace (19) to terrace of appearing on the stage (25) is gradually reduced from inside to outside, and the lower end of the hold-down ring (9) includes convex
Rise, the positioning convex has the positioning inclined-plane (23) being bonded with leave from office terrace (19).
2. replaceable prefastening mud piston according to claim 1, it is characterised in that：Also include being enclosed on piston rod
(1) outside end cap (13), the positioning spiro pit (24) connect with fastener hole is provided with the end cap (13), the compressing member revolves
Enter in the positioning spiro pit (24) and fix the relative position of end cap (13) and hold-down ring (9).
3. replaceable prefastening mud piston according to claim 1, it is characterised in that：The fastener hole is by hold-down ring
(9) open as in the positioning convex end face.
4. replaceable prefastening mud piston according to claim 1, it is characterised in that：The mud-scraping ring (7) with
End corresponding to hold-down ring (9) is provided with the limited impression (18) to cave inward, and the cartridge (8) includes and limited impression
(18) spacing preiection (20) to match, the spacing preiection (20) are placed in limited impression (18).
5. replaceable prefastening mud piston according to claim 1, it is characterised in that：The piston head (5) includes
There is abutting step (21), the abutting step (21) abuts with the mud-scraping ring (7), on the step surface for abutting step (21)
It is provided with the dismounting screw (22).
6. replaceable prefastening mud piston according to claim 1, it is characterised in that：The piston head (5) is outside
Also it is cased with Support tray (6), Support tray (6) pad is in the mud-scraping ring (7) with abutting between step (21).
7. the method for dismounting of the replaceable prefastening mud piston described in claim 1, it is characterised in that：Replaceable prefastening
Mud piston also includes being enclosed on the outside end cap (13) of piston rod (1)；
The spring (10) is arranged on circumference uniform distribution on hold-down ring (9) by the housing screw (11) of circumference uniform distribution on end cap (13)
Fastener hole in；
The piston head (5) is mounted with symmetrical two groups of uniform adjusting screws (4), and support is also cased with outside the piston head (5)
Disk (6), the Support tray (6) pad is in the mud-scraping ring (7) with abutting between step (21)；
The method for dismounting specific steps of replaceable prefastening mud piston：
Adjusting screw (4) and housing screw (11) are unloaded in first step, rotation；
Second step, dismounting lower piston rod (1) and end cap (13)；
Third step, the removal rod (26) coordinated with described dismounting screw (22) screw thread is screwed in from dismounting screw (22), it is described
Removal rod (26) is connected on Support tray (6)；
Four steps, removal rod (26) is continued into rotation forces Support tray (6), mud-scraping ring (7), cartridge (8) and hold-down ring
(9) side that, the Support tray (6), mud-scraping ring (7), cartridge (8) and hold-down ring (9) promote towards removal rod (26) together
To movement, untill mud-scraping ring (7) departs from piston head (5).
8. the method for dismounting of replaceable prefastening mud piston according to claim 7, it is characterised in that：Under dismounting
Before adjusting screw (4) and housing screw (11), it will first be used to install when limiting adjusting screw (4) and housing screw (11) position
The first back-up ring (3) and the second back-up ring (12) disassemble.
9. the method for dismounting of replaceable prefastening mud piston according to claim 7, it is characterised in that：The dismounting
Bar (26) is demounting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291942.9A CN105864028B (en) | 2016-05-05 | 2016-05-05 | Replaceable prefastening mud piston and its method for dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291942.9A CN105864028B (en) | 2016-05-05 | 2016-05-05 | Replaceable prefastening mud piston and its method for dismounting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864028A CN105864028A (en) | 2016-08-17 |
| CN105864028B true CN105864028B (en) | 2018-02-02 |
Family
ID=56631177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610291942.9A Active CN105864028B (en) | 2016-05-05 | 2016-05-05 | Replaceable prefastening mud piston and its method for dismounting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105864028B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140491A (en) * | 2018-11-05 | 2020-05-12 | 扬州四启环保设备有限公司 | Assembled combined piston of energy-saving mud pump |
| CN115899012B (en) * | 2023-02-28 | 2023-05-23 | 仪征天华活塞环有限公司 | Piston sealing structure and piston device |
| CN116372504A (en) * | 2023-05-24 | 2023-07-04 | 龙工(福建)桥箱有限公司 | Assembly Method of Brake Piston Assembly of Loader Wet Drive Axle |
| CN117969629B (en) * | 2024-04-02 | 2024-07-02 | 四川省疾病预防控制中心(四川省预防医学科学研究院四川省卫生监测检验中心) | Physiological index detection system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200362U (en) * | 1985-04-01 | 1986-06-25 | 大港油田钻井工艺研究所 | Biconical piston and installation tool |
| CN2296418Y (en) * | 1996-08-18 | 1998-11-04 | 王兆修 | Double seal ring type single function slurry pump piston |
| CN2305503Y (en) * | 1997-01-06 | 1999-01-27 | 何礼 | Automatic diameter-adjusting piston for petroleum drilling mud pump |
| CN2871919Y (en) * | 2005-11-04 | 2007-02-21 | 上海三高石油设备有限公司 | Long-life piston of mud pump |
| CN202100450U (en) * | 2011-05-11 | 2012-01-04 | 焦作锦标机械制造有限公司 | Mud pump piston assembly for oil well |
| CN205714731U (en) * | 2016-05-05 | 2016-11-23 | 中国石油集团渤海钻探工程有限公司 | Portable dismantling type mud piston |
-
2016
- 2016-05-05 CN CN201610291942.9A patent/CN105864028B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200362U (en) * | 1985-04-01 | 1986-06-25 | 大港油田钻井工艺研究所 | Biconical piston and installation tool |
| CN2296418Y (en) * | 1996-08-18 | 1998-11-04 | 王兆修 | Double seal ring type single function slurry pump piston |
| CN2305503Y (en) * | 1997-01-06 | 1999-01-27 | 何礼 | Automatic diameter-adjusting piston for petroleum drilling mud pump |
| CN2871919Y (en) * | 2005-11-04 | 2007-02-21 | 上海三高石油设备有限公司 | Long-life piston of mud pump |
| CN202100450U (en) * | 2011-05-11 | 2012-01-04 | 焦作锦标机械制造有限公司 | Mud pump piston assembly for oil well |
| CN205714731U (en) * | 2016-05-05 | 2016-11-23 | 中国石油集团渤海钻探工程有限公司 | Portable dismantling type mud piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105864028A (en) | 2016-08-17 |
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