CN204061153U - Eccentric abrasion prevention mud piston - Google Patents
Eccentric abrasion prevention mud piston Download PDFInfo
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- CN204061153U CN204061153U CN201420469031.7U CN201420469031U CN204061153U CN 204061153 U CN204061153 U CN 204061153U CN 201420469031 U CN201420469031 U CN 201420469031U CN 204061153 U CN204061153 U CN 204061153U
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- piston
- abrasion prevention
- eccentric abrasion
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- cylinder sleeve
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Abstract
The utility model relates to the important accessory of a kind of slurry pump, in particular to a kind of eccentric abrasion prevention mud piston, comprise piston core (2), piston core (2) is provided with piston cup (4), piston cup (4) front end is fixed by pressing plate (5) and jump ring (6), the neutral position of piston core (2) outer surface of cylindrical surface is with eccentric abrasion prevention layer (3), the angle head cylindrical of piston core (2) is set to fillet structure, the external diameter of described eccentric abrasion prevention layer (3) is greater than the maximum outside diameter of piston core (2), is less than the internal diameter of cylinder sleeve.The utility model efficiently solves the piston steel core that causes because of eccentric wear problem to the damage of inboard wall of cylinder liner, directly extend the working life of piston and cylinder sleeve, decrease the time changing piston and cylinder sleeve, alleviate the labor intensity of workman, improve working efficiency, all very applicable to the piston of the various model in oil field.
Description
Technical field
The utility model relates to the important accessory of a kind of slurry pump, particularly a kind of eccentric abrasion prevention mud piston.
Background technique
The exploitation of oil, the brill of mine are dug, and all be unable to do without slurry pump, and therefore slurry pump is widely used field.Slurry pump realizes into mud by the to-and-fro motion of piston in cylinder sleeve and goes out mud, wherein the gap of piston steel core and cylinder sleeve is generally between 0.5mm-0.9mm, because mud pump equipment and installation equal error, the friction of piston steel core and inboard wall of cylinder liner can be caused, directly cause the cut of inboard wall of cylinder liner to cause scrapping.
At present, the piston of the oil field welldrilling in use following problem of ubiquity:
A) slurry pump is longer for general service time, and often dismounting and installation in the wild, cause the precision of equipment own to reduce, cause the eccentric wear of piston.
Accumulated error during the mechanical composition sections fit of b) slurry pump, can cause the concentricity of piston and cylinder sleeve to decline, cause the eccentric wear of piston and cylinder sleeve.
C) errors when operator install etc. also can cause the eccentric wear of piston.
The piston eccentric wear that these factors cause directly results in the reduction in piston and cylinder sleeve working life.The piston that general oil field uses and cylinder sleeve about about 70% have eccentric wear phenomenon.
Our company is in the patent of Novel piston of slurry pump at the patent name of application in 2009, refer to and directly a circle eccentric abrasion prevention layer is set on cylinder, the piston caused for avoiding eccentric wear and the damage of cylinder sleeve, but, this structure in actual motion because high cost, less effective are not applied.
Model utility content
According to above deficiency of the prior art, problem to be solved in the utility model is: provide a kind of eccentric abrasion prevention mud piston, avoids the damage of piston that eccentric wear causes and cylinder sleeve, substantially prolongs the working life of piston and cylinder sleeve.
The utility model solves the technological scheme that its technical problem adopts:
Described eccentric abrasion prevention mud piston, comprise piston core, piston core is provided with piston cup, piston cup front end is fixed by pressing plate and jump ring, the neutral position of piston core outer surface of cylindrical surface is with eccentric abrasion prevention layer, the angle head cylindrical of piston core is set to fillet structure, and the external diameter of described eccentric abrasion prevention layer is greater than the maximum outside diameter of piston core, is less than the internal diameter of cylinder sleeve.
Described eccentric abrasion prevention mud piston adds a circle eccentric abrasion prevention layer in the cylindrical neutral position of piston core, the external diameter of eccentric abrasion prevention layer is greater than the maximum outside diameter of piston core, but be less than the internal diameter of cylinder sleeve, make piston in the process used, the eccentric abrasion prevention layer of elastic material can get the effect of buffering, thus can solve because eccentric wear problem causes the damage of piston and cylinder sleeve, the angle head cylindrical of piston core is made into wedge angle wearing and tearing inboard wall of cylinder liner when fillet also avoids piston eccentric wear simultaneously, extends the working life of piston and cylinder sleeve.Establish to seal ring in the circular groove in piston core end face neutral position, make piston after installing connecting rod, be sealed and matched with connecting rod.
Preferred further, the gap existed between eccentric abrasion prevention layer and cylinder sleeve is 0.3mm-0.5mm.
Preferred further, the width of eccentric abrasion prevention layer is 1/2nd of piston core cylinder width.
Preferred further, eccentric abrasion prevention layer adopts polyurethane layer, and polyurethane layer is plated in the neutral position of the outer surface of cylindrical surface of piston core.
Preferred further, eccentric abrasion prevention layer adopts abrasive rubber layer, and abrasive rubber layer is by abrasive rubber and piston core sulfidization molding.Eccentric abrasion prevention layer contacts in piston using process with inboard wall of cylinder liner, and that not only plays protection inboard wall of cylinder liner does use, and can also play the effect of secondary seal.
The beneficial effect that the utility model has is:
The utility model efficiently solves the piston steel core that causes because of eccentric wear problem to the cut of inboard wall of cylinder liner, directly extend the working life of piston and cylinder sleeve, decrease the time changing piston and cylinder sleeve, alleviate the labor intensity of workman, improve working efficiency, all very applicable to the piston of the various model in oil field.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein, 1, seal ring; 2, piston core; 3, eccentric abrasion prevention layer; 4, piston cup; 5, pressing plate; 6, jump ring.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, eccentric abrasion prevention mud piston described in the utility model, comprise piston core 2, piston core 2 is provided with piston cup 4, piston cup 4 front end is fixed by pressing plate 5 and jump ring 6, the neutral position of piston core 2 outer surface of cylindrical surface is with eccentric abrasion prevention layer 3, the angle head cylindrical of piston core 2 is set to fillet structure, the external diameter of described eccentric abrasion prevention layer 3 is greater than the maximum outside diameter of piston core 2, be less than the internal diameter of cylinder sleeve, establish to seal ring 1 in the circular groove in piston core end face neutral position, make piston after installing connecting rod, be sealed and matched with connecting rod.The front end of described piston cup 4 adopts quality of rubber materials, namely end is the rubber of woven fabric or nylon of adulterating with the material of piston core 2 contact jaw, woven fabric or nylon and the vulcanization of rubber are integrated, piston cup is avoided to be subject to the impact of the piston core 2 of steel matter and to damage, piston cup is seal action mainly, the effect of pressing plate and jump ring mainly fastening piston cup.
Wherein, the gap existed between eccentric abrasion prevention layer 3 and cylinder sleeve is 0.3mm-0.5mm, and the width of eccentric abrasion prevention layer is 1/2nd of piston core cylinder width.
Eccentric abrasion prevention layer 3 adopts polyurethane layer, and polyurethane layer is plated in the neutral position of the outer surface of cylindrical surface of piston core 2, and eccentric abrasion prevention layer 3 also can adopt abrasive rubber layer, and abrasive rubber layer is by abrasive rubber and piston core 2 sulfidization molding.
The requirement of eccentric abrasion prevention mud piston described in the utility model to equipment precision, installation precision reduces all greatly; even if install slightly inclined; because of the effect of eccentric abrasion prevention layer elastic material; also the friction because of piston steel core and inboard wall of cylinder liner can be prevented; protect piston and inboard wall of cylinder liner; all very convenient when installing and use, extend the working life of cylinder sleeve and piston simultaneously.
Claims (5)
1. an eccentric abrasion prevention mud piston, comprise piston core (2), piston core (2) is provided with piston cup (4), piston cup (4) front end is fixed by pressing plate (5) and jump ring (6), it is characterized in that: the neutral position of piston core (2) outer surface of cylindrical surface is with eccentric abrasion prevention layer (3), the angle head cylindrical of piston core (2) is set to fillet structure, the external diameter of described eccentric abrasion prevention layer (3) is greater than the maximum outside diameter of piston core (2), is less than the internal diameter of cylinder sleeve.
2. eccentric abrasion prevention mud piston according to claim 1, is characterized in that: the gap existed between described eccentric abrasion prevention layer (3) and cylinder sleeve is 0.3mm-0.5mm.
3. eccentric abrasion prevention mud piston according to claim 2, is characterized in that: the width of described eccentric abrasion prevention layer (3) is 1/2nd of piston core (2) cylinder width.
4. eccentric abrasion prevention mud piston according to claim 3, is characterized in that: described eccentric abrasion prevention layer (3) adopts polyurethane layer, and polyurethane layer is plated in the neutral position of the outer surface of cylindrical surface of piston core (2).
5. eccentric abrasion prevention mud piston according to claim 3, is characterized in that: described eccentric abrasion prevention layer (3) adopts abrasive rubber layer, and abrasive rubber layer is by abrasive rubber and piston core (2) sulfidization molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469031.7U CN204061153U (en) | 2014-08-19 | 2014-08-19 | Eccentric abrasion prevention mud piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469031.7U CN204061153U (en) | 2014-08-19 | 2014-08-19 | Eccentric abrasion prevention mud piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061153U true CN204061153U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420469031.7U Active CN204061153U (en) | 2014-08-19 | 2014-08-19 | Eccentric abrasion prevention mud piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204061153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106172703A (en) * | 2016-07-11 | 2016-12-07 | 杨超坤 | A kind of aquatic products special bio antistaling agent process units |
-
2014
- 2014-08-19 CN CN201420469031.7U patent/CN204061153U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106172703A (en) * | 2016-07-11 | 2016-12-07 | 杨超坤 | A kind of aquatic products special bio antistaling agent process units |
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| GR01 | Patent grant |