CN202510049U - Polish rod centring device - Google Patents
Polish rod centring device Download PDFInfo
- Publication number
- CN202510049U CN202510049U CN2012201370676U CN201220137067U CN202510049U CN 202510049 U CN202510049 U CN 202510049U CN 2012201370676 U CN2012201370676 U CN 2012201370676U CN 201220137067 U CN201220137067 U CN 201220137067U CN 202510049 U CN202510049 U CN 202510049U
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- CN
- China
- Prior art keywords
- jackscrew
- chuck
- support frame
- polish rod
- packing
- 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 belongs to the technical field of the replacing of a polish rod sealing packing device of an oil field pumping unit in a mouth of a well and relates to a polish rod centring device which comprises a support frame, a jackscrew and a chuck. The support frame is in an L shape, a horizontal end face of the support frame is a coupling which is provide with internal threads, two sides of the coupling is connected with rotary handles, and the upper end of the a vertical rod of the support frame is provided with a screw hole. Jackscrew threads are connected with the interior of the screw hole of the support frame, one end of the jackscrew is a jackscrew handle, and the other end of the jackscrew is a ball head. An end face of the chuck is in a semicircular shape, a chuck body is provided with a clamping groove, and the ball head at the front end of the jackscrew is clamped into the clamping groove of the chuck. The polish rod centring device has the advantages of enabling the polish rod to be centered, facilitating the replacing operation of the packing, and improving the working efficiency.
Description
Technical field
The utility model relates to a kind of polished rod device placed in the middle, belongs to the oil-field oil pumper well head and changes polished rod seal packing unit technical field.
Background technology
In the rod-pumped well maintenance management, because of the wellhead polish rod packing because of poorly sealed, usually can crude oil excessive.Cause the not tight reason of packing_seal to have multiple in the production: 1. sealed packing senile abrasion; 2. the too high thorn of suppressing of well head pressure; 3. polished rod dry grinding, packing burn; 4. stolen molecule wilful damage or the like." changing rod-pumped well polished rod seal packing " operation sequence that adopts at present is: alternately close the rubber gate after the shutdown, make polished rod placed in the middle, change packing.But can run into many difficult problems in the real work: 1. the rubber gate extremely can't be closed because of thief-proof oil weldering, and some wellhead sealing device does not design the rubber gate on the scene; 2. polished rod skew, separated time and well head center line be not on a vertical line in the horse head; 3. the rubber gate moves difficulty arbitrarily, is prone to cause the screw thread seepage after mobile.Particularly the wellhead sealing device of two packing boxs is difficult more when changing packing, not only loses time but also dangerous, seriously influences economic benefit.The patent No. 200620087547.0 discloses a kind of centralizer rod-pumped well mouth polish rod centralizer; Mainly there is the problem of three aspects in this centralizer: the one, if be installed on the wellhead sealing device relatively more difficult; Because packing box and rubber gate are the no connecting portions of one, and can only dose sealed packing in the packing box other any accessories can not be installed; The 2nd, can only solve polished rod to some aspects deflection, can not solve multi-direction deflection; The 3rd, the tight screw sealing of centralizer lateral direction penetrating bolt is poor, causes crude oil leakage easily.200920028215.9 disclose a kind of centralizer the oil-extractor polish-rod centralizer, mainly there is the problem of three aspects in this centralizer: the one, because centralizer is fixed, therefore can only solve polished rod to an aspect deflection, can not solve multi-direction deflection; The 2nd, this centralizer poor sealing performance causes crude oil leakage easily; The 3rd, the unreasonable easy damage of this centralizer structure property.
Summary of the invention
The purpose of the utility model is in order to overcome that above-mentioned prior art exists because the polished rod in the well mouth of oil well packing box squints, and makes the not easily changeable defective of sealed packing, and providing a kind of can increase work efficiency, the polished rod of handling safety device placed in the middle.
The utility model is made up of support, jackscrew, chuck, and support is L shaped, and for having the box cupling of internal thread, the box cupling both sides are welded with rotary handle on its horizontal end face, and the vertical rod upper end of support has screw; Jackscrew is threaded in the screw of support, and an end of jackscrew is the jackscrew handle, and the other end is a bulb; The end face of chuck is semicircle, has draw-in groove on its body, and the bulb of jackscrew front end is connected in the draw-in groove of chuck.
The beneficial effect of the utility model is to make polished rod placed in the middle, is convenient to the replacing operation of packing, increases work efficiency.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model vertical view.
The specific embodiment
Can be known that by Fig. 1, Fig. 2 the utility model is made up of support 2, jackscrew 3, chuck 5, support 2 is L shaped, and for having the box cupling 1 of internal thread, box cupling 1 both sides are welded with rotary handle 7 on its horizontal end face, and the vertical rod upper end of support 2 has screw 8; Jackscrew 3 is threaded in the screw 8 of support 2, and an end of jackscrew 3 is a jackscrew handle 6, and the other end is a bulb 4; The end face of chuck 5 is semicircle, has draw-in groove on its body, and the bulb 4 of jackscrew 3 front ends is connected in the draw-in groove of chuck 5.
In operating process, the box cupling 1 of the support 2 of the utility model mode with screwed connection is connected on the oil-water well well head packing box, rotate rotary handle 7 the amesiality position of polished rod is set upright and turned to chuck 5; Rotation jackscrew handle 6, the bulb that drives on the jackscrew 3 rotates in the draw-in groove of chuck 5, promotes chuck 5 simultaneously near polished rod; Placed in the middle until polished rod; Easily take out old packing then and add new packing, lay down polished rod device placed in the middle, tighten the packing pressure cap and get final product opening well and making production.
Claims (1)
1. polished rod device placed in the middle; Form by support (2), jackscrew (3), chuck (5); It is characterized in that: support (2) is for L shaped; For having the box cupling (1) of internal thread, box cupling (1) both sides are welded with rotary handle (7) on its horizontal end face, and the vertical rod upper end of support (2) has screw (8); Jackscrew (3) is threaded in the screw (8) of support (2), and an end of jackscrew (3) is jackscrew handle (6), and the other end is bulb (4); The end face of chuck (5) is semicircle, has draw-in groove on its body, and the bulb (4) of jackscrew (3) front end is connected in the draw-in groove of chuck (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201370676U CN202510049U (en) | 2012-04-01 | 2012-04-01 | Polish rod centring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201370676U CN202510049U (en) | 2012-04-01 | 2012-04-01 | Polish rod centring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510049U true CN202510049U (en) | 2012-10-31 |
Family
ID=47062541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201370676U Expired - Fee Related CN202510049U (en) | 2012-04-01 | 2012-04-01 | Polish rod centring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386244A (en) * | 2017-08-02 | 2019-02-26 | 中国石油天然气股份有限公司 | Packing adding device |
-
2012
- 2012-04-01 CN CN2012201370676U patent/CN202510049U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386244A (en) * | 2017-08-02 | 2019-02-26 | 中国石油天然气股份有限公司 | Packing adding device |
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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: 20121031 Termination date: 20140401 |