CN203296740U - Straight-cylinder type leakage-free wellhead device - Google Patents
Straight-cylinder type leakage-free wellhead device Download PDFInfo
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- CN203296740U CN203296740U CN2013203313742U CN201320331374U CN203296740U CN 203296740 U CN203296740 U CN 203296740U CN 2013203313742 U CN2013203313742 U CN 2013203313742U CN 201320331374 U CN201320331374 U CN 201320331374U CN 203296740 U CN203296740 U CN 203296740U
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- barrel type
- straight barrel
- straight
- elastic body
- cylinder type
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Abstract
The utility model discloses a straight-cylinder type leakage-free wellhead device. The straight-cylinder type leakage-free wellhead device comprises a connecting chuck connected with a polished rod of a pumping unit, and an upper connector connected with the connecting chuck, wherein the other end of the upper connector is connected with a straight-cylinder type elastic body through a clamp, the lower end of the straight-cylinder type elastic body is connected with a connecting wire head through a clamp, a righting sleeve is arranged in the connecting wire head, the polished rod of the pumping unit penetrates through the connecting chuck and the upper connector to enter the straight-cylinder type elastic body, and penetrates through the righting sleeve arranged at the lower end of the straight-cylinder type elastic body, and the connecting wire head is fixedly connected with a wellhead. The straight-cylinder type leakage-free wellhead device simplifies the wellhead structure, reduces pollution caused by leaked oil, reduces power consumed by friction, reduces labor intensity of workers, prolongs the service life of the polished rod, and reduces cost of installation and maintenance. Connection, without relative movement, between the polished rod and an oil well is achieved through connection of a straight-cylinder type elastic rubber bag, the wellhead can be completely in the static seal state, and the situation of being free of leakage in the real sense is achieved.
Description
Technical field
The utility model relates to a kind of oil pumping in oil fields well head device, is specifically related to a kind of straight barrel type without revealing wellhead assembly.
Background technology
Beam pumping unit is a large amount of a kind of pumping units that use of present middle stripper well in the world.It is to utilize oil pumper to drive the reciprocating motion of the pistons that in tubing string, sucker rod connects, and pump barrel and shaft bottom crude oil are lifted to ground.Owing between sucker rod and oil pipe, having relative motion, so on the well head of this kind equipment, all be furnished with packing box, prevent the crude oil leakage.The use of packing box, increased the load of oil pumper, improved the oil extraction cost, and draining has polluted environment, simultaneously owing to often changing the labour intensity that packing has increased the workman.On the other hand, the basis that trueness error during due to erection equipment and oil pumper long-term work cause changes, and has increased greatly the malalignment between sucker rod and oil pipe, makes packing place eccentric wear serious, cause the wearing and tearing of polished rod and oil pick-up tube, form the serious equipment breakdowns such as disconnected bar.So from fundamental significance, it is very urgent and necessary developing a kind of brand-new hermetically sealed Novel wellhead of nothing leakage.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of straight barrel type without revealing wellhead assembly.
the technical solution of the utility model is: a kind of straight barrel type is without revealing wellhead assembly, comprise: the connection dop that is connected with oil-extractor polish-rod, with the upper binding head that is connected the dop connection, the other end of described upper binding head connects has the straight barrel type elastic body by clamp connection, there is the connecting filament head described straight barrel type elastic body lower end by clamp connection, in the connecting filament head, be provided with supporting positive cover, described oil-extractor polish-rod passes described connection dop, upper binding head enters in the straight barrel type elastic body, and pass the supporting positive cover that is positioned at straight barrel type elastic body lower end, described connecting filament head is fixedly connected with well head.
Further improvement of the utility model comprises:
On the elastomeric outer wall of described straight barrel type, be fixed with support ring.
On the elastomeric inwall of described straight barrel type, be provided with the grommet guide pin bushing, described grommet guide pin bushing for straight barrel type elastic body outer wall on be provided with clip.
Described straight barrel type elasticity is provided with the deformation energy storage part.
Described oil-extractor polish-rod and described upper binding head contact position are provided with seal.
Described straight barrel type elastic body is curved surface folded form also, and the elastomeric material of straight barrel type is polyurethane or adds cloth rubber.
On described connecting filament head, be provided with symmetrical spanner working face.
Technique effect of the present utility model is: simplify shaft collar, reduce draining and pollute, the consumed power of reducing friction, reduce labor strength, improves polished rod application life, reduces the installation and maintenance cost.By the connection of straight tube elastic caoutchouc capsule, realize between polished rod and oil well without being connected of relative motion, make well head all be in the static seal state, realize truly without revealing.Overcome the existing all drawbacks that seal by packing box, friction work as useless as leakage, eccentric wear, increase, change the problem such as trouble.By the appropriate design to straight barrel type elastic body diameter, can change the discontinuity equalization state of up-down stroke, when up, utilize the well head pressure of self, oil pumper is produced to a thrust that makes progress, add the frictional resistance that has removed packing box, greatly reduce the load of motor when up, thereby play energy-conservation purpose.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of this practical straight barrel type elastic body energy storage state.
In figure: 1, oil-extractor polish-rod, 2, connect dop, 3, upper binding head, 4, clip, 5, seal, 6, the straight barrel type elastic body, 7, support ring, 8, the grommet guide pin bushing, 9, supporting positive cover, 10, the connecting filament head, 11, the deformation energy storage part.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
as shown in Figure 1, a kind of straight barrel type is without revealing wellhead assembly, comprise: the connection dop 2 that is connected with oil-extractor polish-rod 1, with the upper binding head 3 that is connected dop 2 connections, the other end connection of described upper binding head 3 is connected with straight barrel type elastic body 6 by clip 4, described straight barrel type elastic body 6 lower ends are connected with connecting filament head 10 by clip 4, in connecting filament head 10, be provided with supporting positive cover 9, described oil-extractor polish-rod 1 passes described connection dop 2, upper binding head 3 enters in straight barrel type elastic body 6, and pass the supporting positive cover 9 that is positioned at straight barrel type elastic body 6 lower ends, described connecting filament head 10 is fixedly connected with well head.On the outer wall of described straight barrel type elastic body 6, be fixed with support ring 7.On the inwall of described straight barrel type elastic body 6, be provided with grommet guide pin bushing 8, described grommet guide pin bushing 8 for straight barrel type elastic body 6 outer walls on be provided with clip 4.Described oil-extractor polish-rod 1 is provided with seal 5 with described upper binding head 3 contact positions.
Described straight barrel type elastic body 6 is curved surface folded form also, and the material of straight barrel type elastic body 6 is polyurethane or adds cloth rubber.
On described connecting filament head, be provided with symmetrical spanner working face.
As shown in Figure 2, the utility model when oil-extractor polish-rod 1 is descending, the deformation energy storage part 11 deformation structure schematic diagrames of straight simple type elastic body 6.
Operating principle of the present utility model is: the preferred straight tube elastic caoutchouc capsule of straight barrel type elastic body 6, described straight tube elastic caoutchouc scrotiform shape is the cylindrical straight barrel structure.The top of described straight tube elastic caoutchouc capsule has the dop 2 of connection, upper binding head 3, seal 5 then with the polished rod of oil pumper, to tighten together.There is clip 4 outside of upper binding head 3, between clip 4 and upper binding head 3, is straight tube elastic caoutchouc capsule, and clip 4 lockings make the three be connected as a single entity.On the external diameter of straight tube elastic caoutchouc capsule, the equidistant support ring 7 that distributing, support ring 7 links together by reinforcing band and straight tube elastic caoutchouc capsule.On the appropriate location of straight tube elastic caoutchouc capsule, be provided with wear-resisting grommet guide pin bushing 8, grommet guide pin bushing 8 outsides are straight tube elastic caoutchouc capsule and clip 4, clip 4 lockings make the three be connected as a single entity.The connecting filament head 10 that is connected with well head, supporting positive cover 9 and clip 4.When oil-extractor polish-rod 1 moved up and down, hermetic elastic caoutchouc capsule will be done stretching motion along with polished rod, because there is no relative movable sealing, so just there is no the gentle leak point of crude oil.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a straight barrel type is without revealing wellhead assembly, it is characterized in that, comprise: the connection dop that is connected with oil-extractor polish-rod, with the upper binding head that is connected the dop connection, the other end of described upper binding head connects has the straight barrel type elastic body by clamp connection, there is the connecting filament head described straight barrel type elastic body lower end by clamp connection, in the connecting filament head, be provided with supporting positive cover, described oil-extractor polish-rod passes described connection dop, upper binding head enters in the straight barrel type elastic body, and passing the supporting positive cover that is positioned at straight barrel type elastic body lower end, described connecting filament head is fixedly connected with well head.
2. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, on the elastomeric outer wall of described straight barrel type, is fixed with support ring.
3. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, on the elastomeric inwall of described straight barrel type, is provided with the grommet guide pin bushing, described grommet guide pin bushing for straight barrel type elastic body outer wall on be provided with clip.
4. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, described straight barrel type elasticity is provided with the deformation energy storage part.
5. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, described oil-extractor polish-rod and described upper binding head contact position are provided with seal.
6. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, described straight barrel type elastic body is curved surface folded form also, and the elastomeric material of straight barrel type is polyurethane or adds cloth rubber.
7. a kind of straight barrel type according to claim 1, without revealing wellhead assembly, is characterized in that, on described connecting filament head, is provided with symmetrical spanner working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203313742U CN203296740U (en) | 2013-06-09 | 2013-06-09 | Straight-cylinder type leakage-free wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203313742U CN203296740U (en) | 2013-06-09 | 2013-06-09 | Straight-cylinder type leakage-free wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296740U true CN203296740U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203313742U Expired - Fee Related CN203296740U (en) | 2013-06-09 | 2013-06-09 | Straight-cylinder type leakage-free wellhead device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203296740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790545A (en) * | 2014-01-24 | 2014-05-14 | 王鹏 | Follow-up type device for sealing well mouth under pressure |
-
2013
- 2013-06-09 CN CN2013203313742U patent/CN203296740U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790545A (en) * | 2014-01-24 | 2014-05-14 | 王鹏 | Follow-up type device for sealing well mouth under pressure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20190609 |