CN202202824U - Centralizer - Google Patents
Centralizer Download PDFInfo
- Publication number
- CN202202824U CN202202824U CN2011202706923U CN201120270692U CN202202824U CN 202202824 U CN202202824 U CN 202202824U CN 2011202706923 U CN2011202706923 U CN 2011202706923U CN 201120270692 U CN201120270692 U CN 201120270692U CN 202202824 U CN202202824 U CN 202202824U
- Authority
- CN
- China
- Prior art keywords
- centralizer
- main body
- centralizer main
- packing
- pressure cap
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to oil pumping machinery for oil fields, in particular to a centralizer, and adopts the technical scheme that the centralizer comprises a supporting rod, a pressure cap and a centralizer main body, wherein the pressure cap and the centralizer main body penetrate the supporting rod. The centralizer is characterized in that an inner core is fixed between the centralizer main body and the supporting rod; and a friction block and an elastic element are positioned in a notch of the centralizer main body through a positioning gasket. The utility model has the benefits that raw oil leakage and pollution caused by eccentric wear of a polished rod are solved, so as to save cost and reduce workload; loss of packing caused by eccentric wear is reduced, so as to prolong the service life of the packing and well closing time caused by the replacing of the packing. Therefore, the cost is reduced; raw oil loss caused by well closing is reduced; the strength of a centralizing part is guaranteed; and the mounting and the replacing are convenient.
Description
Technical field
The utility model relates to a kind of oil-field oil pumper tool, particularly a kind of centralizer.
Background technology
In the China oil production process, oil recovery rod-pumped well mouth polish rod sealing quality directly has influence on the work limitation of crude oil yield and oil well, and each oil field of China has the oil well polished rod eccentric wear phenomenon in the more production comparatively serious at present; Bring hidden danger to crude oil production; The problem of its existence is: the one, and crude oil leakage that polished rod causes owing to eccentric wear or large-area pollution, the 2nd, add the packing difficulty winter and cause and stop well for a long time, easily the plugging line; The 3rd, the packing wearing and tearing are very fast; Cause the increase of workload, subject matter is that stuck phenomenon appears in centralizer body and support bar easily, is equivalent to common eccentric wear joint hoop after stuck; Cost is high, and price is more expensive, and scope is promoted the use of at the scene of influence.
Summary of the invention
The purpose of the utility model is exactly to be directed against the above-mentioned defective that prior art exists, and a kind of centralizer is provided, and has guaranteed to set upright the intensity of part, and installs, changes conveniently.
Its technical scheme is: comprise support bar, pressure cap, centralizer main body; Pressure cap and centralizer main body are passed support bar; It is characterized in that: fixing inner core between centralizer main body and the support bar, brake pad and flexible member are positioned in the fluting of centralizer main body with locating shim.
The periphery of described centralizer main body has the stream oil groove.
The beneficial effect of the utility model is: solved the polished rod eccentric wear and prevented crude oil leakage and pollution, practiced thrift cost and alleviated workload; Reduced because of the loss of eccentric wear, increased the service time of packing and because of changing stopping the well time of packing, thereby reduced the expenditure of cost and, guaranteed to set upright the intensity of part, and installed, change conveniently because of stopping the crude oil loss that well causes to packing.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model;
Among the last figure: support bar (1), pressure cap (2), inner core (3), centralizer main body (4), brake pad (5), flexible member (6), locating shim (7).
The specific embodiment:
In conjunction with accompanying drawing 1, the utility model is done further to describe:
The utility model comprises support bar 1, pressure cap 2, centralizer main body 4; Pressure cap 2 passes support bar 1 with centralizer main body 4; It is characterized in that: fixing inner core 3 between centralizer main body 4 and the support bar 1; Brake pad 5 is positioned in the fluting of centralizer main body 4 with flexible member 6 usefulness locating shims 7, and the periphery of described centralizer main body 4 has the stream oil groove.
When installing and using, the endoporus of pressure cap 2 and centralizer main body 4 passes the pier nose of support bar 1, and centralizer main body 4 has the stream oil groove; Brake pad 5 and flexible member 6 like support spring, are positioned in the fluting of centralizer main body 4 with locating shim 7 in advance; The pier nose of earlier box cupling one end never being installed to centralizer main body and pressure cap 2 passes, and on support bar 1, is buckled in inner core 3 on the support bar, penetrates the endoporus of centralizer main body then; One end of inner core has shoulder, leans against the screw thread end of centralizer main body 4, flexibly connects with pressure cap 2 and centralizer main body 4 one ends; Inner core 3 can relatively rotate at the inner chamber of centralizer main body 4 and support bar slip relatively, the two matched in clearance like this.
Solved the polished rod eccentric wear and prevented crude oil leakage and pollution, practiced thrift cost and alleviated workload; Reduced because of the loss of eccentric wear, increased the service time of packing and because of changing stopping the well time of packing, thereby reduced the expenditure of cost and, guaranteed to set upright the intensity of part, and installed, change conveniently because of stopping the crude oil loss that well causes to packing.
Claims (2)
1. centralizer; Comprise support bar (1), pressure cap (2), centralizer main body (4); Pressure cap (2) and centralizer main body (4) are passed support bar (1); It is characterized in that: fixing inner core (3) between centralizer main body (4) and the support bar (1), brake pad (5) is positioned in the fluting of centralizer main body (4) with locating shim (7) with flexible member (6).
2. centralizer according to claim 1 is characterized in that: the periphery of described centralizer main body (4) has the stream oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202706923U CN202202824U (en) | 2011-07-28 | 2011-07-28 | Centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202706923U CN202202824U (en) | 2011-07-28 | 2011-07-28 | Centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202824U true CN202202824U (en) | 2012-04-25 |
Family
ID=45966953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202706923U Expired - Fee Related CN202202824U (en) | 2011-07-28 | 2011-07-28 | Centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202202824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839926A (en) * | 2011-07-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Corrector |
-
2011
- 2011-07-28 CN CN2011202706923U patent/CN202202824U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839926A (en) * | 2011-07-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Corrector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120728 |