CN102454593A - Bearing bush for connecting rod of drilling pump - Google Patents
Bearing bush for connecting rod of drilling pump Download PDFInfo
- Publication number
- CN102454593A CN102454593A CN2010105238431A CN201010523843A CN102454593A CN 102454593 A CN102454593 A CN 102454593A CN 2010105238431 A CN2010105238431 A CN 2010105238431A CN 201010523843 A CN201010523843 A CN 201010523843A CN 102454593 A CN102454593 A CN 102454593A
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- bearing shell
- bearing
- connecting rod
- drilling pump
- pump connecting
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Abstract
The invention discloses a bearing bush for a connecting rod of a drilling pump, which comprises a bearing bush body, wherein lubrication holes (1) are formed on the bearing bush body, and solid lubricants (2) are arranged in the lubrication holes (1). The bearing bush is simple in structure; and with the design of the lubrication holes and the solid lubricants, the problem of poor lubrication of the drilling pump under the conditions of low rotational speed and high load is solved.
Description
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Technical field
The invention belongs to petroleum and natural gas drilling equipment field, relate to a kind of bearing shell that is used for the drilling pump connecting rod concretely.
Background technique
Drilling mud pump is described as rig " heart ", gets out first mouthful of rig with commercial value from the whole world and uses drilling mud pump to begin, and the history in more than 100 year has been arranged.This 100 for many years, the rig slurry pump with commercial value all is the triplex pumps that adopt.Nearest more than 10 years; People begin constantly to explore exploitation five cylinder pumps, compare with triplex pump because of five cylinder pumps, have the pressure surge, the expansion range of flow that have reduced to discharge medium, cancelled traditional shock absorber for output; Improved the life-span of discharging fluid cylinder; Simultaneously the volume of drilling pump is reduced gently, advantages such as weight saving, but all very difficult because of five cylinder pump manufacturings maintenance.
Wherein the connecting rod bottom-end bearing in the connecting rod is exactly one of them.What traditional connecting rod shank big end hole was installed all is rolling bearing; Volume is very big, therefore must replace original rolling bearing through sliding bearing to being that the rolling bearing that original connecting rod shank big end hole is installed is innovated; Bearing shell just belongs to a kind of in the sliding bearing; Bearing shell is as the friction pair between connecting rod and the rod journal, and lubricated quite important between bearing shell and the rod journal forms lubricating that one deck oil film realizes at bearing shell and rod journal usually in rotation process; But for drilling pump; In the running that load is big, rotating speed is lower, set up completely very difficulty of lubricant film, in case the undesirable situation that dry friction just possibly occur of lubrication effect, influence is rotated and working life of reduction bearing shell and connecting rod.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, can guarantee that drilling pump can satisfy the bearing shell that is used for the drilling pump connecting rod of lubrication effect between bearing shell and the bent axle equally under high loading, slow-revving situation.
Technological scheme of the present invention is following:
A kind of bearing shell that is used for the drilling pump connecting rod comprises the bearing shell body, has lubricated hole on the said bearing shell body, is provided with solid lubricant in the said lubricated hole.
Adopt said structure; Through leaving size to fit at the bearing shell body, arrange orderly lubricated hole, and be embedded in solid lubricant, owing to having adopted solid lubricant in lubricated hole; The linear expansion coeffcient of solid lubricant is greater than metallic matrix; When entry into service, the speed of expansion of solid lubricant can be transferred to realizing selflubricating on the mill part, so in the running that drilling pump is big in load, rotating speed is lower, set up complete oil film than under the situation of difficult than matrix fast effect, solid lubricant such as be squeezed simultaneously; Also can play good lubrication, the direct dry friction situation of metal that bearing shell and rod journal friction pair can not take place takes place.
The material of its intermediate bushing body is a brass, and its constituent mass percentage is: Zn 25%～26%, and Al 5.5%～6%, and Fe 2.5%～3.2%, and Mn 3.14%～4%, and surplus is CU.
Said solid lubricant is a graphite.
Said bearing shell body is put together by main load-bearing bearing shell and secondary load-bearing bearing shell, has groove at the junction inwall of said main load-bearing bearing shell and secondary load-bearing bearing shell, and said groove is arranged along axial direction.
Have oil storage tank at said secondary load-bearing bearing shell inwall, said oil storage tank is along the inwall circumferential directions.
Have positioning hole on the said secondary load-bearing bearing shell.
In said main load-bearing bearing shell and secondary load-bearing bearing shell junction be benchmark ± be thinning area in 30 ° of scopes, said thinning area from two to junction attenuate gradually.
This be designed with to be beneficial in thinning area form certain oil film wedge and store a spot of abrasive dust.
Said well width is 25～30mm, and the degree of depth is 1 ~ 1.5mm, and length is than the short 5 ~ 8mm in the every limit of bearing shell width; The width of said oil storage tank is 18 ~ 20mm, and the degree of depth is 3 ~ 4mm; Said positioning hole diameter be φ 10 ~ φ 12mm, the degree of depth is 5 ~ 6mm; Said thinning area thickness is 0.04 ~ 0.06mm.
Preferred said well width is 27mm, and the degree of depth is 1.2mm, and length is than the short 6mm in the every limit of bearing shell width; The width of said oil storage tank is 19mm, and the degree of depth is 3.5mm; Said positioning hole diameter be φ 11mm, the degree of depth is 5.5mm; Said thinning area thickness is 0.05mm.
Preferred said Zn is 27%, and Al is 5.8%, and Fe is 2.8%, and Mn is 3.6%, and surplus is CU.
Beneficial effect: the present invention is simple in structure, the design through lubricated hole and solid lubricant has solved drilling pump lubricated bad problem under the slow-speed of revolution, high load conditions.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the worm's eye view of Fig. 1.
Embodiment
Like Fig. 1,2, a kind of bearing shell that is used for the drilling pump connecting rod shown in 3, comprise the bearing shell body, have lubricated hole on the said bearing shell body, be provided with solid lubricant in the said lubricated hole.
The material of its intermediate bushing body is a brass, and its constituent mass percentage is: Zn 25%～26%, and Al 5.5%～6%, and Fe 2.5%～3.2%, and Mn 3.14%～4%, and surplus is CU.
Said solid lubricant is a graphite.
Said bearing shell body is put together by main load-bearing bearing shell and secondary load-bearing bearing shell, has groove at the junction inwall of said main load-bearing bearing shell and secondary load-bearing bearing shell, and said groove is arranged along axial direction.
Have oil storage tank at said secondary load-bearing bearing shell inwall, said oil storage tank is along the inwall circumferential directions.
Have positioning hole on the said secondary load-bearing bearing shell.
In said main load-bearing bearing shell and secondary load-bearing bearing shell junction be benchmark ± be thinning area in 30 ° of scopes, said thinning area from two to junction attenuate gradually.
Said groove 5 width are 25～30mm, and the degree of depth is 1 ~ 1.5mm, and length is than the short 5 ~ 8mm in the every limit of bearing shell width; The width of said oil storage tank 6 is 18 ~ 20mm, and the degree of depth is 3 ~ 4mm; Said positioning hole 7 diameter be φ 10 ~ φ 12mm, the degree of depth is 5 ~ 6mm; Said thinning area 8 thickness are 0.04 ~ 0.06mm.
Preferred said groove 5 width are 27mm, and the degree of depth is 1.2mm, and length is than the short 6mm in the every limit of bearing shell width; The width of said oil storage tank 6 is 19mm, and the degree of depth is 3.5mm; Said positioning hole 7 diameter be φ 11mm, the degree of depth is 5.5mm; Said thinning area 8 thickness are 0.05mm.
Concretely: bearing shell can bear high-mechanic, slow-revving job requirement equally according to the difference of rotating speed.Divide two kinds of materials to narrate respectively.
When the linear velocity of the rod journal relative movement of bearing shell and bent axle is low; The basic material of bearing shell is selected CuZn25Al6Fe3Mn4 brass for use; On the material of matrix, leave the hole that size is suitable, arrangement is orderly then, in the hole, embed formation solid oiling agent with self-lubricating property.The solid lubricant area is generally 25% of friction area.Because body material is the brass of CuZn25Al6Fe3Mn4, tensile strength can reach 790MPa/mm
2, yield strength can reach 490 MPa/mm
2, specific elongation can reach 17%, hardness can reach HB210-230, limit dynamic load reaches 30MPa, limit dynamic load reaches 30MPa, maximum operation (service) temperature can arrive 300 degrees centigrade.Owing to adopted solid lubricant; The linear expansion coeffcient of solid lubricant is greater than metallic matrix; During entry into service, solid lubricant can be transferred to realizing selflubricating on the mill part, so in the continuous 100 hours running of load big especially (specific pressure arrives 30MPa), rotating speed low especially (1m/s), set up complete oil film than under the situation of difficult at drilling pump; Also can play good lubrication, the direct dry friction situation of metal that bearing shell and rod journal friction pair can not take place takes place.
The secondary load-bearing bearing shell of connecting rod bearing shell body is designed with oil storage tank and groove on the circle within it.The main load-bearing bearing shell part of connecting rod bearing shell only is designed with groove on the circle in this part.Design can increase the bearing area of main load-bearing bearing shell like this, reduces specific pressure, helps the working life of connecting rod bearing shell.(for drilling pump; Because the stressed relation of motion exists main load-bearing member and secondary load-bearing member;, drilling pump can produce very large interaction force when extruding mud; This moment, the interaction of bearing shell was main load-bearing member partly, and interaction force is little a lot of when connecting rod is regained, and this moment, the interaction of bearing shell partly was secondary load-bearing member)
On the outer wall of secondary load-bearing bearing shell, be designed with the positioning hole of restriction rotary freedom, can guarantee that the mutual alignment relation of connecting rod bearing shell master load-bearing bearing shell and secondary load-bearing bearing shell part is fixing, reach the expection requirement of design.
Claims (10)
1. a bearing shell that is used for the drilling pump connecting rod comprises the bearing shell body, it is characterized in that: have lubricated hole (1) on the said bearing shell body, be provided with solid lubricant (2) in the said lubricated hole (1).
2. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 1 is characterized in that: the material of its intermediate bushing body is a brass, and its constituent mass percentage is: Zn 25%～26%; Al 5.5%～6%; Fe 2.5%～3.2%, and Mn 3.14%～4%, and surplus is CU.
3. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 1 and 2 is characterized in that: said solid lubricant (2) is a graphite.
4. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 3; It is characterized in that: said bearing shell body is put together by main load-bearing bearing shell (3) and secondary load-bearing bearing shell (4); Junction inwall at said main load-bearing bearing shell (3) and secondary load-bearing bearing shell (4) has groove (5), and said groove (5) is arranged along axial direction.
5. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 4 is characterized in that: have oil storage tank (6) at said secondary load-bearing bearing shell (4) inwall, said oil storage tank (6) is along the inwall circumferential directions.
6. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 4 is characterized in that: have positioning hole (7) on the said secondary load-bearing bearing shell (4).
7. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 4; It is characterized in that: in said main load-bearing bearing shell (3) and secondary load-bearing bearing shell (4) junction be benchmark ± be thinning area (8) in 30 ° of scopes, said thinning area (8) from two to junction attenuate gradually.
8. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 7 is characterized in that: said groove (5) width is 25～30mm, and the degree of depth is 1 ~ 1.5mm, and length is than the short 5 ~ 8mm in the every limit of bearing shell width; The width of said oil storage tank (6) is 18 ~ 20mm, and the degree of depth is 3 ~ 4mm; Said positioning hole (7) diameter be φ 10 ~ φ 12mm, the degree of depth is 5 ~ 6mm; Said thinning area (8) thickness is 0.04 ~ 0.06mm.
9. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 8 is characterized in that: said groove (5) width is 27mm, and the degree of depth is 1.2mm, and length is than the short 6mm in the every limit of bearing shell width; The width of said oil storage tank (6) is 19mm, and the degree of depth is 3.5mm; Said positioning hole (7) diameter be φ 11mm, the degree of depth is 5.5mm; Said thinning area (8) thickness is 0.05mm.
10. a kind of bearing shell that is used for the drilling pump connecting rod according to claim 2 is characterized in that: said Zn is 27%, and Al is 5.8%, and Fe is 2.8%, and Mn is 3.6%, and surplus is CU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105238431A CN102454593A (en) | 2010-10-29 | 2010-10-29 | Bearing bush for connecting rod of drilling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105238431A CN102454593A (en) | 2010-10-29 | 2010-10-29 | Bearing bush for connecting rod of drilling pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454593A true CN102454593A (en) | 2012-05-16 |
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ID=46038137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105238431A Pending CN102454593A (en) | 2010-10-29 | 2010-10-29 | Bearing bush for connecting rod of drilling pump |
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| Country | Link |
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| CN (1) | CN102454593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454596A (en) * | 2010-10-29 | 2012-05-16 | 四川宏华石油设备有限公司 | Copper sheathing used for connecting rod of drill pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB409289A (en) * | 1932-01-07 | 1934-04-23 | Cleveland Graphite Bronze Co | Improvements relating to shaft and like bearings |
| US6176621B1 (en) * | 1997-09-08 | 2001-01-23 | Daido Metal Company Ltd. | Rotary slide bearing and producing method therefor |
| CN201196215Y (en) * | 2008-05-27 | 2009-02-18 | 浙江双飞无油轴承有限公司 | Copper alloy inlaid solid lubrication bearing |
| CN201436414U (en) * | 2009-03-20 | 2010-04-07 | 宝山钢铁股份有限公司 | Automatic lubrication bearing bush |
| CN102454596A (en) * | 2010-10-29 | 2012-05-16 | 四川宏华石油设备有限公司 | Copper sheathing used for connecting rod of drill pump |
-
2010
- 2010-10-29 CN CN2010105238431A patent/CN102454593A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB409289A (en) * | 1932-01-07 | 1934-04-23 | Cleveland Graphite Bronze Co | Improvements relating to shaft and like bearings |
| US6176621B1 (en) * | 1997-09-08 | 2001-01-23 | Daido Metal Company Ltd. | Rotary slide bearing and producing method therefor |
| CN201196215Y (en) * | 2008-05-27 | 2009-02-18 | 浙江双飞无油轴承有限公司 | Copper alloy inlaid solid lubrication bearing |
| CN201436414U (en) * | 2009-03-20 | 2010-04-07 | 宝山钢铁股份有限公司 | Automatic lubrication bearing bush |
| CN102454596A (en) * | 2010-10-29 | 2012-05-16 | 四川宏华石油设备有限公司 | Copper sheathing used for connecting rod of drill pump |
Non-Patent Citations (1)
| Title |
|---|
| 王飞: "浅谈高力黄铜管的生产工艺及性能对比", 《铜加工》, no. 3, 2 September 2005 (2005-09-02), pages 21 - 25 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454596A (en) * | 2010-10-29 | 2012-05-16 | 四川宏华石油设备有限公司 | Copper sheathing used for connecting rod of drill pump |
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Application publication date: 20120516 |