CN204532214U - Dual gland for packing box - Google Patents
Dual gland for packing box Download PDFInfo
- Publication number
- CN204532214U CN204532214U CN201520187025.7U CN201520187025U CN204532214U CN 204532214 U CN204532214 U CN 204532214U CN 201520187025 U CN201520187025 U CN 201520187025U CN 204532214 U CN204532214 U CN 204532214U
- Authority
- CN
- China
- Prior art keywords
- gland
- lower floor
- screw thread
- packing box
- laminated cover
- 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 a kind of dual gland for packing box, belongs to oil equipment area of maintenance.Upper laminated cover is threaded with lower floor gland, and the external surface of described upper laminated cover arranges laminated cover screw thread, and centre arranges polished rod through hole; The inside and outside surface of described lower floor gland arranges upper and lower part screw thread, and such lower floor gland internal thread cooperatively interacts with the external screw thread of wellhead packing box and is connected.Advantage is: novel, structure is simple, and result of use is good.The application life of packing is improve more than twice, ensures non-leakage, reduce the labour intensity of workman, reduce workload, improve operating efficiency.Its structure is simple, and processing ease is fastening laborsaving, cheap, safe and reliable, practical.
Description
Technical field
The utility model relates to oil equipment area of maintenance, is particularly suitable for the gland of eccentric abrasion prevention packing box.
Background technology
Oilfield pumping well carries out work by polished rod connecting downhole sucker rod.Christmas tree wellhead place is provided with packing box, and packing box ingredient has gland.The gland for packing box that current scene generally uses is mainly individual layer gland, and polished rod produces serious wearing and tearing after long-term work and between packing, and the poorly sealed phenomenon of normal appearance, needs often to change airtight and watertight padding.Adding packing is oilfield pumping well ground maintenance routine work.Add packing not only to waste time and energy, and if poorly sealed time, also need heavily to add packing, life cycle is short, and especially winter operation is more inconvenient.Not only increase the labour intensity of employee, waste material cost and the energy, and affect the normal production of oil well.Urgently improve.
Summary of the invention
The purpose of this utility model is to provide a kind of dual gland for packing box, solves the problems referred to above that prior art exists.Original packing box individual layer gland design is become to use up and down the double-deck gland of threaded communication by the utility model.Instantly when laminated cover can not compress packing, upper laminated cover can continue to compress, and compresses when putting in place, also can add the filler of good springiness in the upper laminated cover of double-deck gland packing box, then turns clockwise with Special force application lever and tighten.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
Dual gland for packing box, upper laminated cover 1 is threaded with lower floor gland 2, and the external surface of described upper laminated cover 1 arranges laminated cover screw thread 3, and centre arranges polished rod through hole 6; The inner surface of described lower floor gland 2 arranges lower floor's gland screw thread 4, and described lower floor gland screw thread 4 cooperatively interacts with the external screw thread of wellhead packing box and is connected.
Described upper laminated cover 1, lower floor's gland 2 are arranged respectively two boosting-rod jacks 7, described boosting-rod jack 7 cooperatively interacts with boosting-rod 5.
Elastic filler is added in described upper laminated cover 1.
The beneficial effects of the utility model are: novel, structure is simple, and result of use is good.The application life of packing is improve more than twice, ensures non-leakage, reduce the labour intensity of workman, reduce workload, improve operating efficiency.Its structure is simple, and processing ease is fastening laborsaving, cheap, safe and reliable, practical.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, and illustrative example of the present utility model and explanation thereof, for explaining the utility model, are not formed improper restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
In figure: 1, upper laminated cover; 2, lower floor's gland; 3, upper laminated cover screw thread; 4, lower floor's gland screw thread; 5, boosting-rod; 6, polished rod through hole; 7, boosting-rod jack.
Detailed description of the invention
Detailed content of the present utility model and detailed description of the invention thereof is further illustrated below in conjunction with accompanying drawing.
Shown in Figure 1, dual gland for packing box of the present utility model, comprise laminated cover 1, lower floor's gland 2, upper laminated cover screw thread 3, lower floor's gland screw thread 4, boosting-rod 5, polished rod through hole 6, boosting-rod jack 7, described upper laminated cover 1 is threaded with lower floor gland 2, the external surface of described upper laminated cover 1 arranges laminated cover screw thread 3, and centre arranges polished rod through hole 6; The inner surface of described lower floor gland 2 arranges lower floor's gland screw thread 4, and described lower floor gland screw thread 4 cooperatively interacts with the external screw thread of wellhead packing box and is connected.
Described upper laminated cover 1, lower floor's gland 2 are arranged respectively two boosting-rod jacks 7, described boosting-rod jack 7 cooperatively interacts with boosting-rod 5.
Elastic filler is added in described upper laminated cover 1.
During use, take off the gland on the former packing box of well head, new gland is installed, lower floor's gland screw thread 4 is threaded with wellhead packing box, upper laminated cover 1 is threaded with lower floor gland 2, upper and lower laminated cover 1,2 all has boosting-rod jack 7, can transfer compression plate root by boosting-rod 5 dextrorotation, guarantees sealing.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All the utility model is done any amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a dual gland for packing box, is characterized in that: upper laminated cover (1) is threaded with lower floor's gland (2), and the external surface of described upper laminated cover (1) arranges laminated cover screw thread (3), and centre arranges polished rod through hole (6); The inner surface of described lower floor gland (2) arranges lower floor's gland screw thread (4), and described lower floor's gland screw thread (4) cooperatively interacts with the external screw thread of wellhead packing box and is connected.
2. dual gland for packing box according to claim 1, is characterized in that: described upper laminated cover (1), lower floor's gland (2) are arranged respectively two boosting-rod jacks (7), and described boosting-rod jack (7) and boosting-rod (5) cooperatively interact.
3. dual gland for packing box according to claim 1, is characterized in that: add elastic filler in described upper laminated cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187025.7U CN204532214U (en) | 2015-03-31 | 2015-03-31 | Dual gland for packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187025.7U CN204532214U (en) | 2015-03-31 | 2015-03-31 | Dual gland for packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532214U true CN204532214U (en) | 2015-08-05 |
Family
ID=53746237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520187025.7U Expired - Fee Related CN204532214U (en) | 2015-03-31 | 2015-03-31 | Dual gland for packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204532214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120084A (en) * | 2017-04-17 | 2017-09-01 | 聊城职业技术学院 | One kind combination oil-well optical rod sealing apparatus |
-
2015
- 2015-03-31 CN CN201520187025.7U patent/CN204532214U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120084A (en) * | 2017-04-17 | 2017-09-01 | 聊城职业技术学院 | One kind combination oil-well optical rod sealing apparatus |
| CN107120084B (en) * | 2017-04-17 | 2020-06-02 | 聊城职业技术学院 | Combined oil well polish rod sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20190331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |