CN103350317A - Method for repairing hydraulic cylinder of drilling pump - Google Patents
Method for repairing hydraulic cylinder of drilling pump Download PDFInfo
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- CN103350317A CN103350317A CN 201310249841 CN201310249841A CN103350317A CN 103350317 A CN103350317 A CN 103350317A CN 201310249841 CN201310249841 CN 201310249841 CN 201310249841 A CN201310249841 A CN 201310249841A CN 103350317 A CN103350317 A CN 103350317A
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Abstract
The invention discloses a method for repairing a hydraulic cylinder of a drilling pump. The method comprises the steps as follows: step 1, a bonnet of a scuffed hydraulic cylinder is disassembled; step 2, burrs, high points and rust in a scuffed position of the hydraulic cylinder are polished; step 3, the scuffed position of the hydraulic cylinder is cleaned and dried; step 4, a blended metal repairing agent is added to the scuffed position of the hydraulic cylinder layer by layer and cured; step 5, the surplus metal repairing agent in the repairing position is polished off by using a commonly used polishing tool; and step 6, the repairing position is ground by using a special grinding tool until the repairing position is matched with the inner surface of the hydraulic cylinder. According to the method for repairing the hydraulic cylinder of the drilling pump, a scuffed defect of the hydraulic cylinder can be overcome rapidly, the cost is low, the repair is convenient, the hydraulic cylinder scrap caused by the scuffed defect of the hydraulic cylinder is avoided, and the enterprise production cost is saved.
Description
Technical field
The present invention relates to the oil-well drilling equipment restorative procedure, relate in particular to the method for repairing and mending after the fluid cylinder generation scuffing of cylinder bore defective of drilling pump.
Background technology
Scuffing of cylinder bore is one of most common failure of fluid cylinder.So-called " scuffing of cylinder bore " refers to that the fluid cylinder inwall is drawn as very dark rill, the secondary loss of seal of piston, piston ring and fluid cylinder wall friction, thus cause whole drilling pump to scrap.
On-the-spot at petroleum drilling operation, various pump apparatus are the most frequently used implements.The scuffing of cylinder bore defective appears in the conical surface that often can run in the fluid cylinder in the use procedure of pump.After the scuffing of cylinder bore defective occurring, groove appears in the fluid cylinder conical surface, and the sealing property of fluid cylinder can not be guaranteed, and common way is as follows:
1, after the fluid cylinder generation scuffing of cylinder bore defective of situ of drilling well, directly replaces the fluid cylinder that scuffing of cylinder bore has occured with new fluid cylinder for subsequent use.Fluid cylinder to scuffing of cylinder bore is scrapped processing.
The fluid cylinder that 2, scuffing of cylinder bore will occur returns fluid cylinder manufactory, and fluid cylinder manufactory carries out repair welding to the groove location of scuffing of cylinder bore fluid cylinder, and then the follow-up Repair such as the processing of polishing.
When drilling crew's employing first method, its production cost is large, and the time of on-the-spot replacing fluid cylinder is also long, the waste field operation time.Adopt second method, although saved to a certain extent production cost, still exist: the on-the-spot fluid cylinder of changing needs the longer activity duration; Need to return fluid cylinder manufactory, the cycle of reprocessing is long; Adopt the method for repair welding, need the heat treatment processes such as preheating, insulation in the time of repair welding, the local deformation of fluid cylinder is inconsistent, cause the fluid cylinder bulk deformation, thereby might cause the fluid cylinder overall precision to reduce, even if after having repaired the scuffing of cylinder bore defective, also can bring other matching defect of fluid cylinder.
Summary of the invention
In order to solve the problems of the prior art, the purpose of this invention is to provide that a kind of maintenance time is short, maintenance cost is cheap, maintenance effect good and at situ of drilling well, need not dismantle the method for repairing and mending that fluid cylinder just can realize keeping in repair hydraulic cylinder of drill pump.
For achieving the above object, the present invention is by the following technical solutions: a kind of method for repairing and mending of hydraulic cylinder of drill pump may further comprise the steps:
Step 1: the fluid cylinder valve gap of scuffing of cylinder bore defective occurs in dismounting;
Step 2: burr, high point, the corrosion of polishing fluid cylinder scuffing of cylinder bore position;
Step 3: clean the scuffing of cylinder bore position, and make its drying;
Step 4: deployed metal repairing agent is successively repaired scuffing of cylinder bore position at fluid cylinder, and make its curing;
Step 5: adopt milling tools commonly used to polish off the unnecessary metal repairing agent of mend;
Step 6: adopt special-purpose milling tool to grind mend, until mend and fluid cylinder inner surface coupling.
Preferably, being cured as in the described step 4 adopted natural air drying 16 hours.In summer, because environment temperature is higher, only need adopt natural air drying just can realize in 16 hours solidifying, can save to a certain extent enterprise's production cost.
Preferably, being cured as in the described step 4 adopts roasting lamp to accelerate to solidify 20 hours.In winter, because environment temperature is lower, if adopt natural air drying, the time that need hardening time is long, adopts roasting lamp to accelerate to solidify, and can greatly shorten the hardening time of metal repairing agent, save the repairing time of fluid cylinder, situ of drilling well is resumed production rapidly.
Preferably, the drying in the described step 3 is natural air drying.
Preferably, the metal repairing agent in the described step 4 is the TS112 metal repairing agent.Adopt the TS112 metal repairing agent, because the characteristics such as that this metal repairing agent has is wear-resistant, corrosion-resistant, high with the metal bond strength, the construction technology performance is good, so that mend and other the surperficial color of fluid cylinder of the fluid cylinder after repairing can substantially be consistent, fluid cylinder long service life after repairing simultaneously, the possibility that the scuffing of cylinder bore defective occurs again in the scuffing of cylinder bore position is little.This metal repairing agent occurs without shrinkage phenomenon in the process of solidifying substantially, and comprehensive mechanical performance is high.
Preferably, in described step 2, add Deruster for metal.
Preferably, described Deruster for metal is 1740 Deruster for metals.1740 Deruster for metals can effectively dissolve obstinate metal oxide, deposit, slag dirt etc., eliminate rust effective.Thereby can strengthen metal repairing agent and be repaired the metal bond strength at place, make the Mechanical Reliability after the repairing can be good.
Preferably, add abrasive sand in the process of lapping in described step 6.
Preferably, described abrasive sand is 400 purpose abrasive sands.Add abrasive sand, can make to be polished the Paint Gloss of face grinding, reduced the possibility that the scuffing of cylinder bore defective occurs again, increased the sealing property of fluid cylinder.
Preferably, described special-purpose milling tool comprises grinding head, lengthens cover and boosting-rod, the shape of described grinding head and polished fluid cylinder inner surface configuration mate fully, and grinding head is fixed on by connecting bolt and lengthens cover one end, and boosting-rod is located in the other end that lengthens cover.Adopt special-purpose milling tool, can make grinding more time saving and energy saving, save milling time, make the better effects if of grinding.
The present invention adopts above technical scheme, utilize metal repairing agent that the scuffing of cylinder bore position of fluid cylinder is repaired, and then adopt milling tools to polish, and adopt at last special-purpose milling tool to grind, realized just can repairing the fluid cylinder that scuffing of cylinder bore occurs fast at situ of drilling well.Owing to need not dismantle fluid cylinder, greatly shortened the time of maintenance, owing to adopting metal repairing agent, do not adopt the method for repair welding in addition, there is not the phenomenon of local heating's inequality in fluid cylinder, can not produce local deformation.Adopt the method to repair fluid cylinder, the mechanical integrated performance of the fluid cylinder after the repairing is good, good seal performance.The operation that the present invention can make the fast quick-recovery of drilling crew stop because of fluid cylinder generation scuffing of cylinder bore can resume operation in 20 hours basically.And maintenance cost is cheap, and it is convenient to repair, and has avoided having saved enterprise's production cost because the fluid cylinder that scuffing of cylinder bore causes is scrapped.
Description of drawings
Further describe the present invention below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of special-purpose milling tool of the present invention;
Fig. 2 is the structural representation of the fluid cylinder of generation scuffing of cylinder bore defective;
Fig. 3 is the cross-sectional schematic of special-purpose milling tool of the present invention when cooperating with the fluid cylinder that is repaired.
The specific embodiment
Shown in one of Fig. 1 to Fig. 3, a kind of method for repairing and mending of hydraulic cylinder of drill pump 5 may further comprise the steps:
Step 1: the valve gap of the fluid cylinder 5 of scuffing of cylinder bore defective occurs in dismounting;
Step 2: burr, high point, the corrosion of polishing fluid cylinder scuffing of cylinder bore position 51;
Step 3: clean scuffing of cylinder bore position 51, and make its drying;
Step 4: deployed metal repairing agent is successively repaired scuffing of cylinder bore position 51 at fluid cylinder, and metal repairing agent is solidified;
Step 5: adopt milling tools commonly used to polish off the unnecessary metal repairing agent of mend;
Step 6: adopt special-purpose milling tool 6 to grind mend, until mend and fluid cylinder inner surface coupling.
Being cured as in the described step 4 adopted natural air drying 16 hours.In summer, because environment temperature is higher, only need adopt natural air drying just can realize in 16 hours solidifying, can save to a certain extent enterprise's production cost.
Being cured as in the described step 4 adopts roasting lamp to accelerate to solidify 20 hours.In winter, because environment temperature is lower, if adopt natural air drying, the time that need hardening time is long, adopts roasting lamp to accelerate to solidify, and can greatly shorten the hardening time of metal repairing agent, save the repairing time of fluid cylinder, situ of drilling well is resumed production rapidly.
Drying in the described step 3 can be natural air drying.
Metal repairing agent in the described step 4 is the TS112 metal repairing agent.Adopt the TS112 metal repairing agent, because the characteristics such as that this metal repairing agent has is wear-resistant, corrosion-resistant, high with the metal bond strength, the construction technology performance is good, so that the mend 51 of the fluid cylinder after repairing can substantially be consistent with fluid cylinder 5 other surperficial colors, fluid cylinder long service life after repairing simultaneously, the possibility that the scuffing of cylinder bore defective occurs again in the scuffing of cylinder bore position is little.This metal repairing agent occurs without shrinkage phenomenon in the process of solidifying substantially, and comprehensive mechanical performance is high.
In described step 2, can add Deruster for metal.Described Deruster for metal is 1740 Deruster for metals.1740 Deruster for metals can effectively dissolve obstinate metal oxide, deposit, slag dirt etc., eliminate rust effective.Thereby can strengthen metal repairing agent and be repaired the metal bond strength at place, make the Mechanical Reliability after the repairing can be good.
Can add abrasive sand in the process of lapping in described step 6.Described abrasive sand is 400 purpose abrasive sands.Add abrasive sand, can make to be polished the Paint Gloss of face grinding, reduced the possibility that the scuffing of cylinder bore defective occurs again, increased the sealing property of fluid cylinder.
Described special-purpose milling tool 6 comprises grinding head 1, lengthens cover 3 and boosting-rod 4, the shape of described grinding head 1 and polished fluid cylinder 5 inner surface configurations mate fully, grinding head 1 is fixed on by connecting bolt 2 and lengthens cover 3 one ends, and boosting-rod 4 is located in the other end that lengthens cover 3.Adopt special-purpose milling tool 6, can make grinding more time saving and energy saving, save milling time, make the better effects if of grinding.
Claims (10)
1. the method for repairing and mending of a hydraulic cylinder of drill pump, it is characterized in that: it may further comprise the steps:
Step 1: the fluid cylinder valve gap of scuffing of cylinder bore defective occurs in dismounting;
Step 2: burr, high point, the corrosion of polishing fluid cylinder scuffing of cylinder bore position;
Step 3: clean the scuffing of cylinder bore position, and make its drying;
Step 4: deployed metal repairing agent is successively repaired scuffing of cylinder bore position at fluid cylinder, and make its curing;
Step 5: adopt milling tools commonly used to polish off the unnecessary metal repairing agent of mend;
Step 6: adopt special-purpose milling tool to grind mend, until mend and fluid cylinder inner surface coupling.
2. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1 is characterized in that: being cured as in the described step 4 adopted natural air drying 16 hours.
3. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1 is characterized in that: being cured as in the described step 4 adopts roasting lamp to accelerate to solidify 20 hours.
4. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1, it is characterized in that: the drying in the described step 3 is natural air drying.
5. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1, it is characterized in that: the metal repairing agent in the described step 4 is the TS112 metal repairing agent.
6. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1 is characterized in that: add Deruster for metal in described step 2.
7. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 6, it is characterized in that: described Deruster for metal is 1740 Deruster for metals.
8. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1 is characterized in that: add abrasive sand in the process of lapping in described step 6.
9. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 8, it is characterized in that: described abrasive sand is 400 purpose abrasive sands.
10. the method for repairing and mending of a kind of hydraulic cylinder of drill pump according to claim 1, it is characterized in that: described special-purpose milling tool comprises grinding head, lengthens cover and boosting-rod, the shape of described grinding head and polished fluid cylinder inner surface configuration mate fully, grinding head is fixed on by connecting bolt and lengthens cover one end, and boosting-rod is located in the other end that lengthens cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310249841 CN103350317A (en) | 2013-06-24 | 2013-06-24 | Method for repairing hydraulic cylinder of drilling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310249841 CN103350317A (en) | 2013-06-24 | 2013-06-24 | Method for repairing hydraulic cylinder of drilling pump |
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| Publication Number | Publication Date |
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| CN103350317A true CN103350317A (en) | 2013-10-16 |
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| CN 201310249841 Pending CN103350317A (en) | 2013-06-24 | 2013-06-24 | Method for repairing hydraulic cylinder of drilling pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238603A (en) * | 2019-07-01 | 2019-09-17 | 广西玉柴机器股份有限公司 | Plunger tip bar wears the method quickly repaired under a kind of casting mould |
-
2013
- 2013-06-24 CN CN 201310249841 patent/CN103350317A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238603A (en) * | 2019-07-01 | 2019-09-17 | 广西玉柴机器股份有限公司 | Plunger tip bar wears the method quickly repaired under a kind of casting mould |
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Application publication date: 20131016 |