CN205990898U - A kind of float collar float plug valve element - Google Patents
A kind of float collar float plug valve element Download PDFInfo
- Publication number
- CN205990898U CN205990898U CN201620708323.0U CN201620708323U CN205990898U CN 205990898 U CN205990898 U CN 205990898U CN 201620708323 U CN201620708323 U CN 201620708323U CN 205990898 U CN205990898 U CN 205990898U
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- valve core
- float
- head
- core head
- sealed cover
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Abstract
This utility model is related to a kind of float collar float plug valve element, including valve core head and valve core rod；Described valve core head is cone, and the conical surface of valve core head is valve core sealed cover；Described valve core rod is fixedly connected on the rear end of valve core head；The valve core sealed cover of described valve core head is coated with one layer of urethane sealant layer.This utility model can build the pressure or during plug bruising in well cementation; slurry erosion is buffered by the wide-angle of buffering suface; thus mitigating the erosion strength to sealing surface for the mud; reach the effect of protection sealing surface; spring righting trough can ensure that valve core sealed cover is fitted with the perfection of valve seat, thus improving the effect of seal spool simultaneously.
Description
Technical field
This utility model belongs to oilfield drilling field of engineering technology, is related to a kind of valve element, especially a kind of float collar float plug
Valve element.
Background technology
During the setting of casing of oil drilling, float collar float plug can be connect in casing string end, play guide shoe and back pressure valve
Effect.The part playing back pressure valve effect in float collar float plug is exactly valve element.
At present, after the completion of connecing float collar float plug setting of casing, well cementation builds the pressure or during plug bruising, can produce a large amount of mud repeatedly
Erosion valve core sealed cover, the resin being likely to result in sealing surface damages seriously, leads to seal invalid well cementation unsuccessfully；In addition bruising is complete
After one-tenth during spring forced resetting, may due to spring cannot righting valve element, lead to valve core sealed cover to be fitted with sealing surface of seat
Produce gap, sealing is invalid to cement the well unsuccessfully.
Utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of float collar float plug valve element.
The purpose of this utility model to solve by the following technical programs：
This float collar float plug valve element, including valve core head and valve core rod；Described valve core head is cone, and the conical surface of valve core head is valve
Core sealing surface；Described valve core rod is fixedly connected on the rear end of valve core head；The valve core sealed cover of described valve core head is coated with a strata
Ammoniacum sealant.
Further, one end of valve core rod is fixedly connected with valve core head by screw thread.
Further, the top conical surface of valve core sealed cover and the vertical line of valve core head axis are at an angle of A, described valve core sealed cover
The vertical line of the bottom conical surface and valve core head axis be at an angle of B, described angle A is less than angle B.
Further, the rear end cone base of valve core head is provided with spring righting trough.
Further, described urethane seal layer setting covers to the side wall of spring righting trough.
Further, after whole valve core sealed cover is covered by urethane seal layer, the lower end in valve core sealed cover is extended with skirt
Side.
This utility model has the advantages that：
This utility model can build the pressure or during plug bruising in well cementation, to buffer slurry erosion by the wide-angle of buffering suface,
Thus mitigating the erosion strength to sealing surface for the mud, reach the effect of protection sealing surface, spring righting trough can ensure that valve simultaneously
Core sealing surface is fitted with the perfection of valve seat, thus improving the effect of seal spool.
Brief description
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of float collar.
Wherein：1st, float collar housing；2nd, bracket；3rd, valve element；4th, spring；5th, sealing ring；6th, valve seat；7th, valve core rod；8th, spring
Righting trough；9th, valve core head；10 valve core sealed covers.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail：
Referring to Fig. 1：Float collar float plug valve element of the present utility model, including valve core head 9 and valve core rod 7；Valve core head 9 is cone,
The conical surface of valve core head 9 is valve core sealed cover 10；Valve core rod 7 is fixedly connected on the rear end of valve core head 9；The seal spool of valve core head 9
Face 10 is coated with a strata ammoniacum sealant.Wherein, one end of valve core rod 7 is fixedly connected with valve core head 9 by screw thread.Valve core head
9 rear end cone base is provided with spring righting trough 8, this spring righting trough 8 the rear end of valve core head 9 around valve core head 9 axis
One week, become round recessed shape, one end of righting spring 4 is goed deep into spring righting trough 8, to improve sealing accuracy.
As Fig. 1：In most preferred embodiment of the present utility model, the top conical surface 10.1 and the valve core head 9 of valve core sealed cover 10
The vertical line of axis is at an angle of A, and the bottom conical surface 10.2 of described valve core sealed cover 10 is at an angle of with the vertical line of valve core head 9 axis
B, described angle A is less than angle B.Face shown in figure angle A is buffering suface, plays the effect of buffering slurry erosion；Face shown in angle B
For valve core sealed cover, A angle faces slow down the erosion to sealing surface (B angle faces) for the mud, improve the sealing effectiveness of sealing surface.
Described urethane seal layer setting covers to the side wall of spring righting trough 8.Urethane seal layer will be close for whole valve element
Front cover 10 is extended with shirt rim 10.3 in the lower end of valve core sealed cover 10 after covering.
Working condition of the present utility model is as shown in Figure 2：
Float collar float plug valve element of the present utility model is arranged in float collar housing 1, and the rear end of valve core rod 7 is assemblied in bracket 2
Interior, valve core head 9 is coordinated with valve seat 6, and the mating surface of valve seat 6 is also machined to adapt to the taper of the valve core sealed cover 10 of valve core head 9, valve
It is additionally provided with sealing ring 5 between seat 6 and float collar housing 1 inwall.Spring 4 is enclosed within valve core rod 7, and spring 4 one end stretches to bullet
In spring righting trough 8, other end set on carrier 2 and props up bracket 2.
Finally it should be noted that：Above example is only in order to illustrate the technical solution of the utility model rather than it is limited
System；Although being described in detail to this utility model with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still specific embodiment of the present utility model can be modified or some technical characteristics are carried out with equivalent replacing
Change；Without deviating from the spirit of technical solutions of the utility model, it all should cover the technical scheme being claimed in this utility model
In the middle of scope.
Claims (6)
1. a kind of float collar float plug valve element is it is characterised in that include valve core head (9) and valve core rod (7)；Described valve core head (9) is cone
Body, the conical surface of valve core head (9) is valve core sealed cover (10)；Described valve core rod (7) is fixedly connected on the rear end of valve core head (9)；Institute
The valve core sealed cover (10) stating valve core head (9) is coated with a strata ammoniacum sealant.
2. float collar float plug valve element according to claim 1 is it is characterised in that screw thread is passed through in one end of described valve core rod (7)
It is fixedly connected with valve core head (9).
3. float collar float plug valve element according to claim 1 is it is characterised in that the top conical surface of described valve core sealed cover (10)
(10.1) it is at an angle of A, the bottom conical surface (10.2) of described valve core sealed cover (10) and valve element with the vertical line of valve core head (9) axis
The vertical line of head (9) axis is at an angle of B, and described angle A is less than angle B.
4. float collar float plug valve element according to claim 1 is it is characterised in that the rear end cone base of described valve core head (9)
It is provided with spring righting trough (8).
5. the float collar float plug valve element according to claim 1 or 4 is it is characterised in that the setting of described urethane seal layer covers
Side wall to spring righting trough (8).
6. float collar float plug valve element according to claim 1 is it is characterised in that described urethane seal layer will be close for whole valve element
Front cover (10) is extended with shirt rim (10.3) in the lower end of valve core sealed cover (10) after covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620708323.0U CN205990898U (en) | 2016-07-05 | 2016-07-05 | A kind of float collar float plug valve element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620708323.0U CN205990898U (en) | 2016-07-05 | 2016-07-05 | A kind of float collar float plug valve element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205990898U true CN205990898U (en) | 2017-03-01 |
Family
ID=58102000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620708323.0U Active CN205990898U (en) | 2016-07-05 | 2016-07-05 | A kind of float collar float plug valve element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205990898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359878A (en) * | 2019-07-22 | 2019-10-22 | 新疆再兴科苑石油科技有限公司 | Two way seal float collar assembly |
-
2016
- 2016-07-05 CN CN201620708323.0U patent/CN205990898U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359878A (en) * | 2019-07-22 | 2019-10-22 | 新疆再兴科苑石油科技有限公司 | Two way seal float collar assembly |
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| GR01 | Patent grant |