CN2220528Y - Oil pumping rod sealing apparatus - Google Patents
Oil pumping rod sealing apparatus Download PDFInfo
- Publication number
- CN2220528Y CN2220528Y CN 94219111 CN94219111U CN2220528Y CN 2220528 Y CN2220528 Y CN 2220528Y CN 94219111 CN94219111 CN 94219111 CN 94219111 U CN94219111 U CN 94219111U CN 2220528 Y CN2220528 Y CN 2220528Y
- Authority
- CN
- China
- Prior art keywords
- oil pumping
- blowout
- oil
- blowout prevention
- polish rod
- 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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- Sealing Devices (AREA)
Abstract
The utility model relates to an oil pumping polished rod sealing device which is suitable for the seal of the oil pumping polished rod of the oil exploitation well opening of the oil pumping machine of an oil field. An upper sealing assembly [2] and a lower sealing assembly [4] of the utility model are connected by a joint [3]. The lower end of the lower sealing assembly [4] is connected with a blowout-preventing box [6]. A valve ball [10] is arranged inside the N groove of the blowout-preventing box [6]. A sealing valve seat [5] is arranged on the lower end of the inner cavity of the lower sealing assembly [4]. The blowout-preventing box [6] and a clamping hoop head [8] are connected by a fixed ring [7]. The blowout-preventing box [6] has certain amount of movement in the fixed ring [7] in the radial direction. The utility model not only has the functions of seal and rectifying deviation, but also has the function of blowout prevention.
Description
The utility model relates to a kind of oil pumping polish rod sealer, is applicable to the sealing of the oil pumping polish rod of oil-field oil pumper production wellhead.
Existing oil-field oil pumper wellhead polish rod sealer is a kind of to be only to have sealing function, when oil pumping polish rod and mouth of pumped oil well off-centre, will cause the polished rod seal eccentric wear, and the life-span is low, easily causes oil pollution; Another kind is the function with sealing, correction, is seal box and be that sphere is connected but structure adopts, can freely rotate correction in certain angle, but such complex structure, sphere processing and manufacturing difficulty is big, the cost height.
The purpose of this utility model provides a kind of good seal performance, and is simple in structure, promptly has sealing, has the oil pumping polish rod sealer of correction, blowout prevention function again.
The utility model is achieved in that upper and lower seal assembly is connected by joint, lower seal assembly lower end is connected to a blowout prevention box, in the blowout prevention box groove valve ball is arranged, in lower seal assembly inner chamber lower end one valve seat is arranged, blowout prevention box and clip head are connected and fixed by retainer plate, and the blowout prevention box has certain amount of movement on the retainer plate inner radial.When the oil pumping polish rod sealer is installed on the well head, unclamp retainer plate, the upper-lower seal assembly can move radially with the blowout prevention box, it is consistent with the oil pumping polish rod center to adjust the oil pumping polish rod sealer, then retainer plate is tightened fixing, when normal oil pumping, last seal assembly plays sealing function, the lower seal assembly does not seal, when oil pumping polish rod is disconnected when taking off, the oil pumping polish rod inner chamber is communicated with atmosphere, under the band pressure oil and atm difference effect in well head or main line, force valve ball to valve seat move and with its sealing, prevent crude oil ejection.
The utility model is provided by following examples:
Fig. 1 is the utility model structure principle chart.
Below in conjunction with accompanying drawing the utility model is described in detail.
The seal assembly [2] of going up of the present utility model, lower seal assembly [4] is connected by joint [3], lower seal assembly [4] lower end is connected to a blowout prevention box [6], one valve ball [10] is arranged in the N groove of blowout prevention box [6], valve ball [10] can be in the band between N groove and closure plate [9] and the oil pumping polish rod be pressed oil free floating, in lower seal assembly [4] inner chamber lower end one valve seat [5] is arranged, blowout prevention box [6] is connected and fixed by retainer plate [7] with clip head [8], blowout prevention box [6] has certain amount of movement on retainer plate [7] inner radial, one closure plate [9] is arranged in the blowout prevention box [6], one through hole Q is arranged on the closure plate [9], one cavity M is arranged at clip head [8] top, and closure plate [9] hole Q is communicated with clip head [8] upper cavity M and blowout prevention box [6] N groove.
During use, be connected and fixed with well head with the clip head [8] of clip with the oil pumping polish rod sealer earlier, unclamp retainer plate [7], blowout prevention box [6] can move on retainer plate [7] inner radial, it is consistent with the oil pumping polish rod center to adjust the oil pumping polish rod sealer, so it has deviation-correcting function; After the centering, retainer plate [7] is fastening, adjust pressure cap [1], the sealing [13] in the seal assembly [2] is compressed and the oil pumping polish rod sealing, can begin oil pumping this moment, and polished rod sealer plays the sealing function with oil pumping polish rod; When needs are changed sealing [13], can unclamp the hold-down screw [12] of the connecting joint [3] of upper and lower seal assembly [2] [4], swivel [3], compress the sealing [11] in the lower seal assembly [4], can unclamp clamping cap [1] this moment, takes out sealing [13], the sealing that more renews [13].Adjust pressure cap [1] then, sealing [13] is compressed, with oil pumping polish rod sealing, swivel [3], sealing [11] in the lower seal assembly [4] is unclamped, lower seal [11] is not sealed, tighten hold-down screw [12], promptly finish the replacing of sealing [13], because oil pumping polish rod is consistent with the center of oil pumping polish rod sealer, thereby prevent sealing [13] eccentric wear in the seal assembly on the oil pumping polish rod sealer [2], improved the application life of sealing [13], reduced the replacing number of times; When oil pumping polish rod is suddenly disconnected when taking off, the band in well head and the main line press oil with the effect of atm difference under, promote valve ball [10] shift to valve seat [5] and with its sealing, prevent the oil ejection, reduce environment pollution.
Claims (3)
1, a kind of oil pumping polish rod sealer, it by last seal assembly, joint, lower seal assembly, clip is first-class forms, it is characterized in that: lower seal assembly [4] lower end is connected to a blowout prevention box [6], in [N] groove of blowout prevention box [6] a valve ball [10] is arranged, there is a valve seat [5] lower seal assembly [4] inner chamber lower end, blowout prevention box [6] is connected and fixed by retainer plate [7] with clip head [8], and blowout prevention box [6] has certain amount of movement on retainer plate [7] inner radial.
2, oil pumping polish rod sealer according to claim 1 is characterized in that a closure plate [9] is arranged in the blowout prevention box [6], and a through hole [Q] is arranged on the closure plate [9].
3, oil pumping polish rod sealer according to claim 1 is characterized in that a cavity [M] is arranged at clip head [8] top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219111 CN2220528Y (en) | 1994-08-18 | 1994-08-18 | Oil pumping rod sealing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219111 CN2220528Y (en) | 1994-08-18 | 1994-08-18 | Oil pumping rod sealing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2220528Y true CN2220528Y (en) | 1996-02-21 |
Family
ID=33834073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94219111 Expired - Fee Related CN2220528Y (en) | 1994-08-18 | 1994-08-18 | Oil pumping rod sealing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2220528Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233236A (en) * | 2021-12-30 | 2022-03-25 | 深圳际格精配科技有限公司 | Sucker rod blowout prevention box |
-
1994
- 1994-08-18 CN CN 94219111 patent/CN2220528Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233236A (en) * | 2021-12-30 | 2022-03-25 | 深圳际格精配科技有限公司 | Sucker rod blowout prevention box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |