CN104595176A - Flexible connection method for crosshead to piston of well drilling pump - Google Patents
Flexible connection method for crosshead to piston of well drilling pump Download PDFInfo
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- CN104595176A CN104595176A CN201510038306.0A CN201510038306A CN104595176A CN 104595176 A CN104595176 A CN 104595176A CN 201510038306 A CN201510038306 A CN 201510038306A CN 104595176 A CN104595176 A CN 104595176A
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- ball pivot
- piston
- crosshead
- draw bar
- piston rod
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Abstract
The invention discloses a flexible connection method for a crosshead to a piston of a well drilling pump. According to the flexible connection method, any one of three rigid and fixed connection positions, which are formed by the crosshead, a middle pull rod, a piston rod and the piston in sequence, is connected by adopting a hinging manner of a spherical hinge; the other two positions are connected by adopting a previous rigid connection manner. According to the method, a spherical hinge structure allows a connected piece to do any deflection movement in X, Y and Z directions, so that manufacturing and installation errors are automatically compensated, and the eccentric wearing problem of a cylinder sleeve piston caused by the abrasion of a guide plate and the like is avoided; the service life of the cylinder sleeve piston is prolonged, and the product quality of the well drilling pump and the working efficiency of well drilling work are greatly improved.
Description
Technical field
The invention belongs to petroleum gas drilling-production equipment technical field, relate to the flexible connecting method of a kind of drilling pump cross head to piston.
Background technique
Drilling pump is the nucleus equipment of oil-well rig, and the drilling pump motion parts used at present mainly adopts crank block structure, and it mainly comprises crank, connecting rod, crosshead, guide plate, intermediate draw bar, piston rod, piston and cylinder sleeve.Connecting rod converts crankshaft rotating motion the to-and-fro motion of crosshead, intermediate draw bar, piston rod and piston to.Drilling pump cross head and intermediate draw bar, intermediate draw bar and piston rod, piston rod are connected with piston three place and all adopt " rigid " fixed connection structure (see Fig. 1).In theory, should make crosshead, piston and cylinder sleeve on same center line by " rigid " fixed connection structure.But in actual using process, due to manufacturing and fixing error, part deadweight and the reason such as crosshead and guide plate wearing and tearing, the center line that " rigid " is fixedly connected with can not overlap completely with cylinder sleeve center line, there is the trend of the larger radial missing of generation, augular offset and amount of deflection deviation, and this deviation is fixedly connected with is directly delivered between cylinder sleeve piston by " rigid ", cause cylinder sleeve piston eccentric wear phenomenon, have a strong impact on drilling pump quality of product and drillng operation working efficiency.
Summary of the invention
The object of this invention is to provide the flexible connecting method of a kind of drilling pump cross head to piston, the decentraction solving crosshead and the cylinder sleeve existed in prior art, on the impact of cylinder sleeve and piston coaxial degree, causes the problem of drilling pump cylinder jacket piston eccentric wear.
The technical solution adopted in the present invention is, a kind of drilling pump cross head is to the flexible connecting method of piston, and any place rigidly fixed in connection of three places crosshead, intermediate draw bar, piston rod and piston formed successively adopts the articulated manner of ball pivot.
Drilling pump cross head of the present invention, to the flexible connecting method of piston, is further characterized in that:
The crosshead rear end be arranged in guide plate is coaxially connected successively with intermediate draw bar and right-hand member ball pivot piston rod, then by right-hand member ball pivot piston rod by the ball pivot piston hinge in ball pivot and cylinder sleeve; Crosshead front end is connected with crank drive by connecting rod.
Rigidly fix between crosshead with intermediate draw bar and be connected; Adopt to rigidly fix between intermediate draw bar with right-hand member ball pivot piston rod and be connected; Adopt between right-hand member ball pivot piston rod and ball pivot piston can the ball pivot that deflects arbitrarily of X, Y, Z tri-directions hinged.
The crosshead rear end be arranged in guide plate is coaxially connected with right-hand member ball pivot intermediate draw bar, then by right-hand member ball pivot intermediate draw bar by ball pivot and left end ball pivot piston rod hinged, left end ball pivot piston rod is connected with the piston coaxial in cylinder sleeve; Crosshead front end is connected with crank drive by connecting rod.
Adopt between crosshead with right-hand member ball pivot intermediate draw bar bolt or other rigidly fix and be connected; Adopt between right-hand member ball pivot intermediate draw bar and left end ball pivot piston rod can the ball pivot that deflects arbitrarily of X, Y, Z tri-directions hinged; Left end ball pivot piston rod with adopt screw thread to rigidly fix between piston to be connected.
By the ball pivot crosshead rear end that is arranged in guide plate by ball pivot and left end ball pivot intermediate draw bar hinged, be more coaxially connected with piston rod by left end ball pivot intermediate draw bar, piston rod is connected with the piston coaxial in cylinder sleeve; Crosshead front end is connected with crank drive by connecting rod.
Adopt between ball pivot crosshead and left end ball pivot intermediate draw bar can the ball pivot that deflects arbitrarily of X, Y, Z tri-directions hinged; Left end ball pivot intermediate draw bar with adopt between piston rod clip or other rigidly fix and be connected; Adopt screw thread to rigidly fix between piston rod with piston to be connected.
The invention has the beneficial effects as follows, should the theory of " flexibility " connecting means be three places " rigidity " that crosshead, intermediate draw bar, piston rod and piston are formed be fixedly connected with in any place change to the linkage structure form of ball pivot.Spherical hinge structure allows connected piece to do arbitrary yaw motion in X, Y, Z tri-directions, " flexibility " connecting means of spherical hinge structure form can the cylinder sleeve piston eccentric wear problem that causes of the reason such as error and guide plate wearing and tearing of auto-compensation manufacture and installation, extend cylinder sleeve piston life, effectively reduce and solve cylinder sleeve piston eccentric wear phenomenon, significantly improving drilling pump quality of product and drillng operation working efficiency.
Accompanying drawing explanation
Fig. 1 is " rigid " linkage structure schematic diagram of existing drilling pump cross head to piston;
Fig. 2 is drilling pump cross head of the present invention the first embodiment's scheme schematic diagram to " flexibility " connecting means of piston;
Fig. 3 is the second embodiment scheme schematic diagram of drilling pump cross head of the present invention to " flexibility " connecting means of piston;
Fig. 4 is drilling pump cross head of the present invention the third embodiment's scheme schematic diagram to " flexibility " connecting means of piston.
In figure, 1. crosshead, 2. intermediate draw bar, 3. piston rod, 4. piston, 5. cylinder sleeve, 6. guide plate, 7. bolt, 8. clip, 9. ball pivot, 11. ball pivot crossheads, 12. right-hand member ball pivot intermediate draw bars, 13. left end ball pivot intermediate draw bars, 14. right-hand member ball pivot piston rods, 15. left end ball pivot piston rods, 16. ball pivot pistons, 17. cranks, 18. connecting rods.
Embodiment
With reference to Fig. 1, existing drilling pump cross head to " rigid " linkage structure of piston is,
The crosshead 1 be arranged in guide plate 6 is fixedly connected with intermediate draw bar 2 by bolt 7, intermediate draw bar 2 is fixedly connected with by the termination of clip 8 with piston rod 3 again, the inner of piston rod 3 is arranged in cylinder sleeve 5 with piston 4, like this, it is mobile that piston 4 drives piston rod 3, intermediate draw bar 2 and crosshead 1 one to enclose, eccentric wear will be there is between crosshead 1 and guide plate 6, between cylinder sleeve 5 and piston 4, cause adverse consequences.
Drilling pump cross head of the present invention is to " flexibility " connecting means of piston, any place rigidly fixed at three places that crosshead 1, intermediate draw bar 2, piston rod 3 and piston 4 are formed successively in connection adopts the articulated manner of ball pivot, other two places still adopt rigid connection, according to changed three kinds of different installation positions, comprise following three kinds of modes:
With reference to Fig. 2, the first mode of structure is, is coaxially connected successively crosshead 1 rear end be arranged in guide plate 6 with intermediate draw bar 2 and right-hand member ball pivot piston rod 14, then right-hand member ball pivot piston rod 14 is hinged with the ball pivot piston 16 in cylinder sleeve 5 by ball pivot 9; Crosshead 1 front end is in transmission connection by connecting rod 18 and crank 17.
Adopt between crosshead 1 with intermediate draw bar 2 bolt or other rigidly fix and be connected; Adopt between intermediate draw bar 2 with right-hand member ball pivot piston rod 14 clip or other rigidly fix and be connected; Adopt between right-hand member ball pivot piston rod 14 and ball pivot piston 16 can the flexible ball pivot 9 that deflects arbitrarily of X, Y, Z tri-directions hinged.
With reference to Fig. 3, the second mode of structure is, crosshead 1 rear end be arranged in guide plate 6 is coaxially connected with right-hand member ball pivot intermediate draw bar 12, then right-hand member ball pivot intermediate draw bar 12 is hinged by ball pivot 9 and left end ball pivot piston rod 15, left end ball pivot piston rod 15 is coaxially connected with the piston 4 in cylinder sleeve 5; Crosshead 1 front end is in transmission connection by connecting rod 18 and crank 17.
Adopt between crosshead 1 with right-hand member ball pivot intermediate draw bar 12 bolt or other rigidly fix and be connected; Adopt between right-hand member ball pivot intermediate draw bar 12 and left end ball pivot piston rod 15 can the flexible ball pivot 9 that deflects arbitrarily of X, Y, Z tri-directions hinged; Left end ball pivot piston rod 15 with adopt screw thread to rigidly fix between piston 4 to be connected.
With reference to Fig. 4, the third mode of structure is, by hinged by ball pivot 9 and left end ball pivot intermediate draw bar 13 for ball pivot crosshead 11 rear end be arranged in guide plate 6, be more coaxially connected with piston rod 3 by left end ball pivot intermediate draw bar 13, piston rod 3 is coaxially connected with the piston 4 in cylinder sleeve 5; Crosshead 1 front end is in transmission connection by connecting rod 18 and crank 17.
Adopt between ball pivot crosshead 11 and left end ball pivot intermediate draw bar 13 can the flexible ball pivot 9 that deflects arbitrarily of X, Y, Z tri-directions hinged; Left end ball pivot intermediate draw bar 13 with adopt between piston rod 3 clip or other rigidly fix and be connected; Adopt screw thread to rigidly fix between piston rod 3 with piston 4 to be connected.
Working principle of the present invention is,
With reference to Fig. 2, Fig. 3 and Fig. 4, when crosshead and cylinder sleeve center line disalignment or when having several angle, ball pivot 9 in drive path utilizes " flexibility " Placement that original Hard link is converted to articulated manner, make associated components can transfer disalignment line slightly in certain scope inward turning, the rubber lip of piston 4 or ball pivot piston 16 also allows certain amount of deformation simultaneously, so piston will turn to hemisphere for fulcrum is to the action direction inclination several angle of power with ball pivot place, thus alleviate or eliminate the hard grind occurred because of " cannot moving ", eccentric wear phenomenon, effectively improve the working life of cylinder sleeve piston.
Claims (7)
1. a drilling pump cross head is to the flexible connecting method of piston, it is characterized in that, any place rigidly fixed at three places that crosshead (1), intermediate draw bar (2), piston rod (3) and piston (4) are formed successively in connection adopts the articulated manner of ball pivot.
2. drilling pump cross head according to claim 1 is to the flexible connecting method of piston, it is characterized in that: crosshead (1) rear end be arranged in guide plate (6) is coaxially connected successively with intermediate draw bar (2) and right-hand member ball pivot piston rod (14), then right-hand member ball pivot piston rod (14) is hinged with the ball pivot piston (16) in cylinder sleeve (5) by ball pivot (9); Crosshead (1) front end is in transmission connection by connecting rod (18) and crank (17).
3. drilling pump cross head according to claim 2 is to the flexible connecting method of piston, it is characterized in that: described crosshead (1) is connected with rigidly fixing between intermediate draw bar (2); Adopt to rigidly fix between intermediate draw bar (2) with right-hand member ball pivot piston rod (14) and be connected; Adopt between right-hand member ball pivot piston rod (14) and ball pivot piston (16) can the ball pivot (9) that deflects arbitrarily of X, Y, Z tri-directions hinged.
4. drilling pump cross head according to claim 1 is to the flexible connecting method of piston, it is characterized in that: crosshead (1) rear end be arranged in guide plate (6) is coaxially connected with right-hand member ball pivot intermediate draw bar (12), again that right-hand member ball pivot intermediate draw bar (12) is hinged by ball pivot (9) and left end ball pivot piston rod (15), left end ball pivot piston rod (15) is coaxially connected with the piston (4) in cylinder sleeve (5); Crosshead (1) front end is in transmission connection by connecting rod (18) and crank (17).
5. drilling pump cross head according to claim 4 is to the flexible connecting method of piston, it is characterized in that: described crosshead (1) with adopt between right-hand member ball pivot intermediate draw bar (12) bolt or other rigidly fix and be connected; Adopt between right-hand member ball pivot intermediate draw bar (12) and left end ball pivot piston rod (15) can the ball pivot (9) that deflects arbitrarily of X, Y, Z tri-directions hinged; Adopt screw thread to rigidly fix between left end ball pivot piston rod (15) with piston (4) to be connected.
6. drilling pump cross head according to claim 1 is to the flexible connecting method of piston, it is characterized in that: ball pivot crosshead (11) rear end that will be arranged in guide plate (6) is hinged by ball pivot (9) and left end ball pivot intermediate draw bar (13), coaxially be connected with piston rod (3) by left end ball pivot intermediate draw bar (13), piston rod (3) is coaxially connected with the piston (4) in cylinder sleeve (5) again; Crosshead (1) front end is in transmission connection by connecting rod (18) and crank (17).
7. drilling pump cross head according to claim 6 is to the flexible connecting method of piston, it is characterized in that: adopt between described ball pivot crosshead (11) and left end ball pivot intermediate draw bar (13) can the ball pivot (9) that deflects arbitrarily of X, Y, Z tri-directions hinged; Adopt between left end ball pivot intermediate draw bar (13) with piston rod (3) clip or other rigidly fix and be connected; Adopt screw thread to rigidly fix between piston rod (3) with piston (4) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038306.0A CN104595176A (en) | 2015-01-26 | 2015-01-26 | Flexible connection method for crosshead to piston of well drilling pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038306.0A CN104595176A (en) | 2015-01-26 | 2015-01-26 | Flexible connection method for crosshead to piston of well drilling pump |
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| CN104595176A true CN104595176A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510038306.0A Pending CN104595176A (en) | 2015-01-26 | 2015-01-26 | Flexible connection method for crosshead to piston of well drilling pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237740A (en) * | 2017-08-06 | 2017-10-10 | 黄田 | A kind of high efficiency air-breather |
| CN110425129A (en) * | 2019-06-21 | 2019-11-08 | 中国计量大学上虞高等研究院有限公司 | A kind of low leakage double acting symmetrical expression fluid flow precision metering device |
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| WO2000031414A2 (en) * | 1998-11-23 | 2000-06-02 | Ht Miser | Reciprocating pump/compressor with self-aligning piston |
| CN201396269Y (en) * | 2009-05-13 | 2010-02-03 | 宝鸡石油机械有限责任公司 | Ball pivot type connecting structure of cross head and intermediate draw bar in borehole pump and fracturing pump |
| US20100275774A1 (en) * | 2009-04-30 | 2010-11-04 | Tsc Offshore Group Limited | Biaxial alignment assembly for force delivery device |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
| CN202690418U (en) * | 2012-07-04 | 2013-01-23 | 山东中探机械有限公司 | Structure for connecting connection rod and crosshead of slush pump |
| CN203627110U (en) * | 2013-11-15 | 2014-06-04 | 宝鸡石油机械有限责任公司 | Positive-bias-type crank connecting rod mechanism reciprocating pump |
-
2015
- 2015-01-26 CN CN201510038306.0A patent/CN104595176A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031414A2 (en) * | 1998-11-23 | 2000-06-02 | Ht Miser | Reciprocating pump/compressor with self-aligning piston |
| US20100275774A1 (en) * | 2009-04-30 | 2010-11-04 | Tsc Offshore Group Limited | Biaxial alignment assembly for force delivery device |
| CN201396269Y (en) * | 2009-05-13 | 2010-02-03 | 宝鸡石油机械有限责任公司 | Ball pivot type connecting structure of cross head and intermediate draw bar in borehole pump and fracturing pump |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
| CN202690418U (en) * | 2012-07-04 | 2013-01-23 | 山东中探机械有限公司 | Structure for connecting connection rod and crosshead of slush pump |
| CN203627110U (en) * | 2013-11-15 | 2014-06-04 | 宝鸡石油机械有限责任公司 | Positive-bias-type crank connecting rod mechanism reciprocating pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237740A (en) * | 2017-08-06 | 2017-10-10 | 黄田 | A kind of high efficiency air-breather |
| CN110425129A (en) * | 2019-06-21 | 2019-11-08 | 中国计量大学上虞高等研究院有限公司 | A kind of low leakage double acting symmetrical expression fluid flow precision metering device |
| CN110425129B (en) * | 2019-06-21 | 2020-12-29 | 中国计量大学上虞高等研究院有限公司 | Low-leakage double-acting symmetric fluid flow precision metering device |
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Application publication date: 20150506 |
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