CN105840487A - Slurry pump piston and dismounting method thereof - Google Patents
Slurry pump piston and dismounting method thereof Download PDFInfo
- Publication number
- CN105840487A CN105840487A CN201610293472.XA CN201610293472A CN105840487A CN 105840487 A CN105840487 A CN 105840487A CN 201610293472 A CN201610293472 A CN 201610293472A CN 105840487 A CN105840487 A CN 105840487A
- Authority
- CN
- China
- Prior art keywords
- mud
- piston
- scraping ring
- dismounting
- screw
- 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.)
- Granted
Links
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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The invention provides a slurry pump piston and a dismounting method thereof. The slurry pump piston comprises a piston rod, a piston head and a sealing assembly. The piston head is arranged on the outer wall of the piston rod in a sleeving mode. The sealing assembly comprises a sealing rubber sleeve, an upper slurry scraping ring and a lower slurry scraping ring. The upper slurry scraping ring and the lower slurry scraping ring are arranged outside the piston head in a sleeving mode, and an accommodating space is formed between the upper slurry scraping ring and the lower slurry scraping ring. The piston head is sleeved with the sealing rubber sleeve which is located in the accommodating space. The piston head is further provided with dismounting screw holes. The forming directions of the dismounting screw holes are parallel to the axis direction of the lower slurry scraping ring. The sealing performance of the piston is ensured, the arranging positions of parts of the sealing assembly are matched with those of the dismounting screw holes formed in the piston head so that the sealing assembly can be rapidly separated from the piston head by screwing dismounting parts into the dismounting screw holes, and therefore the dismounting time is shortened.
Description
Technical field
The invention belongs to drilling prospection field, especially relate to a kind of mud piston and method for dismounting thereof.
Background technology
At present, drilling mud pump piston is required to change cartridge after a certain period of use time.And make
During with, packing element is extruded repeatedly, its with piston head fit form by matched in clearance when installing or little
The magnitude of interference coordinates, and becomes interference fit.And then cause changing during packing element the most not square, considerably increase replacing
Time, especially with the piston of vulcanite technique with greater need for integral replacing piston assembly, cause into
This substantial increase.
Summary of the invention
In view of this, it is contemplated that propose a kind of mud piston, change piston with solution and effectively shorten
The problem of piston replacing construction.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of mud piston, it includes piston rod, piston head and black box；
Described piston head is enclosed within the outer wall of piston rod；
Described black box includes cartridge, upper mud-scraping ring and lower mud-scraping ring；
Described upper mud-scraping ring and lower mud-scraping ring be socketed in respectively the outside of piston head and upper mud-scraping ring and under scrape
Being formed between mud ring and accommodate space, described cartridge is enclosed within piston head outside and is positioned at described receiving space
In；
Also have dismounting screw on described piston head, described dismounting screw offer direction and lower mud-scraping ring axle
Line direction is parallel.
Further, also include the gland being enclosed within outside piston rod, described gland have positioning spiro pit,
By screw-in housing screw in described positioning spiro pit, gland is solid with the relative position of upper mud-scraping ring
Fixed.
Further, described upper mud-scraping ring is provided with, in the end corresponding with lower mud-scraping ring, the limit caved inward
Position groove, described cartridge includes the spacing preiection matched with limited impression, and described spacing preiection is put
In limited impression.
Further, described lower mud-scraping ring is provided with the limit caved inward in the end corresponding with upper mud-scraping ring
Position groove, described cartridge includes the spacing preiection matched with limited impression, and described spacing preiection is put
In limited impression.
Further, the bore of the external opening part in described receiving space is gradually reduced from outside to inside, described close
Sealing cylinder includes and the spacing inclined-plane of the external opening in this receiving space laminating.
Further, described piston head includes abutting step, described abutting step and described lower mud-scraping ring
Abut, the step surface of described abutting step has described dismounting screw.
Further, being also cased with lower compression plate outside described piston head, described lower compression plate mat is under described
Mud-scraping ring with abut between step.
Further, it is additionally provided with compression plate between described upper mud-scraping ring and gland.
Further, described dismounting screw screws in regulation screw, described regulation screw and described lower compression
Dish abuts.
Further, the bottom of described piston rod is stretched out and is screwed in spiral shell on the outside of piston head and piston rod bottom
Mother, described nut is connected on described gland.
Further, described cartridge and described piston head interference fit.
Relative to prior art, a kind of mud piston of the present invention has the advantage that
The cooperation of piston rod of the present invention, piston head and black box is set up and not only be ensure that piston
Sealing property, the setting up of all parts being simultaneously included in black box is offered on position and piston head
Dismounting screwhole position coordinates, and then can be quick by black box by this dismounting screw screw-in demolition part
Depart from piston head, reduce the take-down time.
Another object of the present invention is to propose the method for dismounting of a kind of mud piston, to solve to use this
Mud piston can realize the purpose of fast assembling-disassembling.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of method for dismounting of mud piston, its concrete steps:
First step, regulation screw and housing screw are unloaded in rotation；
Second step, dismounting lower piston rod and gland；
Third step, screws in the removal rod with described dismounting screw threaded engagement from dismounting screw, described
Removal rod is connected on lower compression plate；
4th step, removal rod is continued compression plate under rotation forces, lower mud-scraping ring, cartridge and on
Mud-scraping ring, described lower compression plate, lower mud-scraping ring, cartridge push away towards removal rod together with upper mud-scraping ring
Dynamic direction is moved, till lower mud-scraping ring departs from piston head.
Further, before regulating screw and housing screw under dismounting, first will be used for limiting regulation screw
Disassemble with the first back-up ring and the second back-up ring installed during housing screw position.
Further, described removal rod is demounting bolt.
Relative to prior art, the method for dismounting of a kind of mud piston of the present invention has following excellent
Gesture:
Method for dismounting of the present invention effectively and quickly can will have specifically-built slush pump
Piston dismounting is complete, and only needs to use an aid to complete, and then decreases the cost of input
And the time.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is a kind of mud piston overall structure schematic diagram described in the embodiment of the present invention；
Fig. 2 is that in a kind of mud piston method for dismounting described in the embodiment of the present invention, the installation of removal rod is shown
It is intended to.
Description of reference numerals:
1-piston rod；2-the first sealing member；3-the first back-up ring；4-regulates screw；5-piston head；Under 6-
Compression plate；Mud-scraping ring under 7-；8-cartridge；The upper mud-scraping ring of 9-；The upper compression plate of 10-；11-gland；
12-housing screw；13-the second back-up ring；14-the second sealing member；15-the 3rd sealing member；16-nut；
17-removal rod；18-limited impression；The spacing inclined-plane of 19-；20-spacing preiection；21-abuts step；22-
Dismounting screw.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As it is shown in figure 1, a kind of mud piston, it includes piston rod 1, piston head 5 and black box；
Described piston head 5 is enclosed within the outer wall of piston rod 1；
Described black box includes cartridge 8, upper mud-scraping ring 9 and lower mud-scraping ring 7；
Described upper mud-scraping ring 9 and lower mud-scraping ring 7 are socketed in outside and the upper mud-scraping ring 9 of piston head 5 respectively
And formed between lower mud-scraping ring 7 and accommodate space, it is outside and be positioned at that described cartridge 8 is enclosed within piston head 5
In described receiving space；
On described piston head 5 also have dismounting screw 22, described dismounting screw 22 offer direction with under
Mud-scraping ring 7 axis direction is parallel.
The limited impression 18 of described upper mud-scraping ring 9 and lower mud-scraping ring 7 and the spacing preiection of cartridge 8
20 closely cooperate, and contribute to there is good property placed in the middle when cartridge 8 works.
Formed between upper mud-scraping ring 9 and lower mud-scraping ring 7 and accommodate space, the external opening part in described receiving space
Bore be gradually reduced from outside to inside, described cartridge 8 include and the external opening in this receiving space laminating
Spacing inclined-plane 19 this accommodate space to outward opening and the matching design on spacing inclined-plane 19, make fluid sealant
Cylinder 8 is more preferable gluing, sealing when compressing and between piston rod 1, concurrently facilitates the suction improving piston.
Inner ring lower end that cartridge 8 is fitted with piston rod 1 and the end that piston head 5 abuts with gland 11
Chamfering is all devised, it is simple to install on face.
Upper mud-scraping ring 9 upper end is mounted with compression plate 10 and gland 11 successively, is wearing injection piston head 5
Piston rod 1 bottom end screw in nut 16, lock pressing by nut 16 and realize axial restraint.
Gland 11 devises 8 groups or the positioning spiro pit of other quantity of circumference uniform distribution, by regulation
Screw 12 is matched, regulation cartridge 8 with coordinate pine between piston rod 1 and piston head 5
Tightly.
Lower mud-scraping ring 7 lower end is mounted with lower compression plate 6, realizes axially limit by the step surface of piston head 5
Position.
The circumference devising 4 groups or other quantity on the step surface abutting step 21 of piston head 5 is equal
The dismounting screw 22 of cloth, matched by regulation screw 4, regulation cartridge 8 and piston rod 1
And the cooperation degree of tightness between piston head 5.
Housing screw 12 on gland 11 and the regulation screw 4 on piston head 5 are respectively by the first back-up ring
3 and second back-up ring 13 spacing.First it is cased with respectively close between piston rod 1 and piston head 5 and gland 11
Sealing the 2, second sealing member 14 and the 3rd sealing member 15 seal.
Assembly and disassembly methods is:
During installation, in piston head 5 outer ring coating lubricating oil, convenient installation；
Then by lower compression plate 6, lower mud-scraping ring 7, cartridge 8, upper mud-scraping ring 9, upper compression plate 10
It is installed on piston head 5；
It is interference fit between cartridge 8 and piston head 5, cartridge 8 is put after just the most downward
Press or rap with bakelite hammer；
Afterwards gland 11 is covered, piston rod 1 is installed, twist good nut 16 and fix gland 11.Finally
Regulation screw 4 and housing screw 12 are installed as required, compress cartridge 8, install the first back-up ring
3 and second back-up ring 13.
During dismounting, lay down nut 16, piston rod 1, gland 11, regulation screw 4 and housing screw 12
Deng；
As in figure 2 it is shown, removal rod 17 is arranged on piston head 5, by worm drive, removal rod
17 withstand on and push mud-scraping ring 9, lower mud-scraping ring 7 and cartridge 8 on lower compression plate 6 and depart from piston head
5, dismounting can be realized.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (10)
1. a mud piston, it is characterised in that: include piston rod (1), piston head (5) and
Black box；
Described piston head (5) is enclosed within the outer wall of piston rod (1)；
Described black box includes cartridge (8), upper mud-scraping ring (9) and lower mud-scraping ring (7)；
Described upper mud-scraping ring (9) and lower mud-scraping ring (7) be socketed in respectively piston head (5) outside and
Being formed between upper mud-scraping ring (9) and lower mud-scraping ring (7) and accommodate space, described cartridge (8) is overlapped
Outside at piston head (5) and be positioned at described receiving space；
Dismounting screw (22), opening of described dismounting screw (22) is also had on described piston head (5)
Set direction is parallel with lower mud-scraping ring (7) axis direction.
A kind of mud piston the most according to claim 1, it is characterised in that: also include being enclosed within
The gland (11) that piston rod (1) is outside, described gland has positioning spiro pit on (11), passes through
In described positioning spiro pit, screw in housing screw (12) and by gland (11) and upper mud-scraping ring (9)
Relative position fix.
A kind of mud piston the most according to claim 1, it is characterised in that: scrape mud on described
Ring (9) is provided with the limited impression (18) caved inward in the end corresponding with lower mud-scraping ring (7),
Described cartridge (8) includes the spacing preiection (20) matched with limited impression (18), described
Spacing preiection (20) is placed in limited impression (18).
A kind of mud piston the most according to claim 1, it is characterised in that: scrape mud under described
Ring (7) is provided with the limited impression (18) caved inward in the end corresponding with upper mud-scraping ring (9),
Described cartridge (8) includes the spacing preiection (20) matched with limited impression (18), described
Spacing preiection (20) is placed in limited impression (18).
A kind of mud piston the most according to claim 1, it is characterised in that: described receiving sky
Between the bore of external opening part be gradually reduced from outside to inside, described cartridge (8) includes and this receiving
The spacing inclined-plane (19) of space external opening laminating.
A kind of mud piston the most according to claim 1, it is characterised in that: described piston head
(5) including abutting step (21), described abutting step (21) is supported with described lower mud-scraping ring (7)
Connect, the step surface of described abutting step (21) has described dismounting screw (22).
A kind of mud piston the most according to claim 6, it is characterised in that: scrape mud under described
Ring (7) is also lined with lower compression plate (6) with abutting between step (21), described dismounting screw (22)
Upper screw-in regulates screw (4), and described regulation screw (4) abuts with described lower compression plate (6).
8. the method for dismounting of a kind of mud piston described in claim 1, it is characterised in that: concrete
Step:
First step, regulation screw (4) and housing screw (12) are unloaded in rotation；
Second step, dismounting lower piston rod (1) and gland (11)；
Third step, screws in and described dismounting screw (22) threaded engagement from dismounting screw (22)
Removal rod (17), described removal rod (17) is connected on lower compression plate (6)；
4th step, removal rod (17) is continued compression plate (6) under rotation forces, lower mud-scraping ring (7),
Cartridge (8) and upper mud-scraping ring (9), described lower compression plate (6), lower mud-scraping ring (7), close
The direction that sealing cylinder (8) promotes towards removal rod (17) together with upper mud-scraping ring (9) is moved, until
Till lower mud-scraping ring (7) departs from piston head (5).
The method for dismounting of a kind of mud piston the most according to claim 8, it is characterised in that:
Before regulating screw (4) and housing screw (12) under dismounting, first will be used for limiting regulation screw (4)
Disassemble with the first back-up ring (3) and the second back-up ring (13) installed during housing screw (12) position.
The method for dismounting of a kind of mud piston the most according to claim 8, it is characterised in that:
Described removal rod (17) is demounting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293472.XA CN105840487B (en) | 2016-05-05 | 2016-05-05 | A kind of mud piston and its method for dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293472.XA CN105840487B (en) | 2016-05-05 | 2016-05-05 | A kind of mud piston and its method for dismounting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840487A true CN105840487A (en) | 2016-08-10 |
| CN105840487B CN105840487B (en) | 2018-03-27 |
Family
ID=56590951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610293472.XA Active CN105840487B (en) | 2016-05-05 | 2016-05-05 | A kind of mud piston and its method for dismounting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840487B (en) |
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 |
| CN205714730U (en) * | 2016-05-05 | 2016-11-23 | 中国石油集团渤海钻探工程有限公司 | A kind of mud piston of convenient dismounting |
-
2016
- 2016-05-05 CN CN201610293472.XA patent/CN105840487B/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 |
| CN205714730U (en) * | 2016-05-05 | 2016-11-23 | 中国石油集团渤海钻探工程有限公司 | A kind of mud piston of convenient dismounting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105840487B (en) | 2018-03-27 |
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Effective date of registration: 20210926 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |