CN207315263U - One kind is changed valve and is blocked up - Google Patents
One kind is changed valve and is blocked up Download PDFInfo
- Publication number
- CN207315263U CN207315263U CN201721253466.8U CN201721253466U CN207315263U CN 207315263 U CN207315263 U CN 207315263U CN 201721253466 U CN201721253466 U CN 201721253466U CN 207315263 U CN207315263 U CN 207315263U
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- CN
- China
- Prior art keywords
- valve
- spool
- conical surface
- spring
- block
- 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
Valve is changed the utility model discloses one kind to block up, there are front-end and back-end, it, which includes changing valve, blocks up body, push rod, spool, spring and baffle ring.Change valve and block up the center of body equipped with the deflector hole from the extension of front end rear end direction, in deflector hole baffle ring is equiped with front position, spring is installed on baffle ring close to the side of rear extreme direction, the other end of spring is connected with spool, side of the spool away from spring can be arranged on second conical surface of spool conical surface seal, push rod by being provided with deflector hole.When valve converting tool is installed on the rear end for changing stifled valve, push rod can promote spool extruding spring and be disengaged with sealing surface, realize the conducting of deflector hole.The utility model is not high to the susceptibility of medium, and the sealing surface that spool blocks up body with changing valve uses conical surface seal, and the gap between the conical surface is zero under force, can bear the operating pressure of 20000Psi.The utility model have it is compact-sized, service life length, securely and reliably, pressure reduce or fluctuate in the case of do not interfere with airtight quality the advantages that.
Description
Technical field
Petroleum well workover technical operation field is the utility model is related to, more particularly to a kind of wellheadpressure changes valve blocking
Device.
Background technology
As the exploitation of oil gas field enters middle and later periods, the working environment deterioration of production tree and its valve, H2The corrosion of S, frequency
Numerous switch exposes to the sun and rain in addition, causes valve to damage, thus needs frequently to replace valve.But when some valves of production tree are sent out
After raw damage, replacement is relatively difficult, and a kind of method is replaced after well is pushed down, and can so make the mesolow well quilt of exploitation middle and later periods
Kill or pollute payzone, and resurrection somewhat expensive and difficulty after killing, it is more difficult to exclude pollution of the kill-job to payzone；High-pressure well
Kill-job it is also highly difficult.To avoid well-killing valve replacing door operation, generally blocked up in industry using changing valve.
Change valve and block up and be used to a kind of Emergency Tool that wellhead assembly in case of emergency replaces side valve, change valve and block up and borrow
The deflector hole of itself can be blocked up by changing valve by the pressure of carrier inside and be directed to pressure by helping adaptation flange and valve converting tool
The rear end that valve blocks up is changed, makes to change valve and blocks up forefront pressure and reach balance with rear end pressure, plays to be rapidly assembled and disassembled and changes the work that valve blocks up
With, change valve and block up by self seal and the sealing between carrier, release by valve converting tool and change valve and block up rear end pressure, can be with
Replaced and safeguarded the operation of wellhead assembly side valve, change valve and block up the ultra-high pressure apparatus belonged in API6A specifications field,
In the specification field of API6A, carrier refers to tubing head four-way, casing head spool, valve, referring to Figure of description Fig. 1.
In the wellhead assembly of API6A, it is an indispensable important tool to change valve and block up, it will not only possess sulfuration resistant
The ability of hydrogen, carbon dioxide corrosion, will also have the ability for bearing that sealing is connected with carrier and itself bear high pressure (fluid pressure
Or gas pressure) sealing ability, the requirement of API6A and NACE MR0175 specifications is also met in the selection of material, if
In use once failing, it will catastrophic loss occurs, seems extremely important so changing valve and getting lodged on safe to use.
It is common at present change valve and block up mainly have two kinds, one kind is that monoblock type is changed valve and blocked up, and another kind is that water conservancy diversion cellular type changes valve and blocks up.
Wherein, it is that will change valve using definite shape screw thread to block up on carrier that monoblock type, which is changed valve and blocked up, and by the conical surface
" O " type sealing ring play sealing between the conical surface and the conical surface.Due to no deflector hole, the conical surface and carrier inner cone are blocked up when changing valve
When face will contact, since the presence of "O"-ring establishes sealing at this time, the end face that the pressure exchange valve in carrier blocks up is just
A thrust is generated, the big I of the thrust calculates F=π D by formula2P/4 (power on end face of F-act on, D-with being situated between
The area of matter contact, the pressure born on P-unit area), it can be seen that pressure is directly proportional to active force from formula,
Pressure more noticeable effort is also bigger, and when the pressure in carrier reaches 20000Psi, it, which acts on to change valve and block up the power of end face, reaches
Maximum, changes valve and blocks up side-to-side movement and relatively rotated by definite shape screw thread and transmit, at this time the frictional force at screw thread also reaches
Maximum has been arrived, has continued to have to be realized with very big operation moment of torsion towards the movement of carrier inner conical surface to changing valve and blocking up, it is no
It can not then make to change valve and block up movement.Equally also have to use very big operation moment of torsion to remove to change valve and block up.Therefore, this kind changes valve and blocks up
Do not possess Fast Installation and the ability of dismounting.
And water conservancy diversion cellular type is changed since the contact that steel ball blocks up with changing valve body is that line contacts during valve blocks up, the sealing at this belongs to metal
To metal sealing, to the region of contact, its surface roughness requirements is very high, otherwise can leak, so will to manufacturing equipment
Ask very high.In addition, the medium usually in well is not very pure, oil, natural gas, quicksand, hydrogen sulfide, titanium dioxide are contained in medium
Carbon, particularly quicksand, when medium passes through deflector hole, quicksand can wash away steel ball, sealing surface, the table of steel ball and sealing surface
Face will produce abrasion and serious groove, and the generation of this defect can cause seal failure, it may occur that serious leakage.Especially
When medium is heavy oil, due to containing sand in heavy oil, once heavy oil and sand, which accumulate in, can also influence airtight quality at sealing mechanism.
Therefore, this kind changes valve and blocks up very high to the susceptibility of medium, thus influences deflector hole and change valve to block up from bearing carrier inside pressure
The ability of positive confinement in the state of power.
Utility model content
In order to overcome the problems referred above, the utility model, which provides one kind and changes valve, blocks up, and it is sensitive to medium to which solve traditional product
The problem of degree is high, not easy to install and dismounting.
Technical solution is used by the utility model solves its technical problem：One kind is changed valve and is blocked up, and has and is sealed with carrier
The front end of cooperation, and work when can with the matched rear end of valve converting tool, including：Change valve block up body, push rod, spool, spring,
" O " type sealing ring, spring pad and baffle ring.
Wherein, change valve and block up the center of body and be equipped with deflector hole from the extension of front end rear end direction, which blocks up to change valve
Provide pressure equalisation passage.Change valve block up body correspond at front position be equipped with sealed between carrier inner conical surface first cone
Face, is equipped with outer-hexagonal at opposite rear end position.Be provided with groove on first conical surface, " O " type sealing ring installation in a groove and then
Realize and seal with carrier inner conical surface.Offered and the matched screw thread of carrier internal thread changing valve and blocking up on the outer wall of body.In water conservancy diversion
Baffle ring is equiped with hole at front position, spring is installed on baffle ring and connects close to the side of rear extreme direction, the other end of spring
It is connected to spool.Being provided with the deflector hole can be with second conical surface of spool conical surface seal, when not being subject to other external force, spool
It can realize and seal with second conical surface of deflector hole under the action of the spring.Spring pad is additionally provided between baffle ring and spring.Push rod is set
The side away from spring in spool is put, when valve converting tool is installed on the rear end for changing stifled valve, push rod can promote spool to extrude spring
And disengaged with sealing surface, realize the conducting of deflector hole.
Using above-mentioned technical proposal, by being improved to the structure of spool, and by its with change valve block up body deflector hole it is close
Front cover uses conical surface seal, and the gap between the conical surface is zero under force, and so changing valve and blocking up can bear 20000Psi's
Operating pressure.
Further, seal groove is offered on the matched sealing surface of second conical surface of spool and deflector hole, the sealing
A sealing material is equipped with groove, is sealed into nonmetallic sealing at this.Sealing surfaces roughness required by nonmetallic sealing unlike
Metal sealing is high to the sealing surfaces required by sealing surfaces, the roughness of general sealing surfaces reach 3.2 microns can,
So be not required for manufacture it is very high, so easy to carrying out maintenance and maintain at the scene.In addition, using nonmetallic close
The purpose of envelope is exactly to consider to contain quicksand in medium, and quicksand can wash away sealing surfaces, when quicksand is to the surface of sealing surface
When producing abrasion and serious groove, nonmetallic sealing material can be deformed and made up to the surface of abrasion in sealing,
Nonmetallic sealing material plays the role of quicksand absorption and anti-attrition, will not lose the ability of sealing under force.It is not ugly
Go out, the utility model to change stifled valve not high to the susceptibility of medium, thus do not influence to lead and change valve and block up from bearing in carrier
The ability of positive confinement in the state of portion's pressure.
Preferably, the sealing material on above-mentioned spool uses HNBR- high saturation anti-H 2 S rubber, the high saturation sulfuration resistant
Hydrogen rubber can be used for -46 DEG C of low temperature, 120 DEG C of high temperature and carbonated and hydrogen sulfide medium.In addition, the sealing on spool
Using directly vulcanizing on spool and being molded, the sealing material will not voluntarily come off material at work, so ensure that and change
Valve blocks up in use safe and reliable.
The utility model compared with prior art, the advantage is that：
1st, the valve that changes of the utility model is got lodged at deflector hole using nonmetallic sealing, sensitivity of this kind of mode to medium
Degree is not high, does not influence thus to change the ability that valve blocks up the positive confinement certainly in the state of carrier inside pressure is born.Even
Quicksand produces abrasion to the surface of sealing surface, and when producing serious groove, nonmetallic sealing material still can be right in sealing
The surface of abrasion is deformed and is made up, and it is not lost the ability of sealing.
2nd, spool and change valve and block up the sealing surface of body and use conical surface seal, the gap between the conical surface is zero under force,
So change valve and block up the operating pressure that can bear 20000Psi.
3rd, the sealing surfaces roughness required by nonmetallic sealing is unlike metal sealing is to the sealing required by sealing surfaces
Surface is high, the roughness of general sealing surfaces reach 3.2 microns can, so be not to manufacturing process requirement it is very high, just
In carrying out maintenance and maintain at the scene.
To sum up, the utility model has compact-sized, service life length, securely and reliably, situation is reduced or fluctuate in pressure
Under the advantages of not interfering with airtight quality.
Below with reference to drawings and examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the usage state diagram of the utility model.
Fig. 2 is the sectional view of the utility model.
Fig. 3 is the partial enlarged view of Fig. 2.
When Fig. 4 turns on for via hole, the fundamental diagram of the utility model.
When Fig. 5 seals for via hole, the fundamental diagram of the utility model.
In figure, 100, carrier, 101, change valve and block up, 102, valve, 103, adaptation flange, 104, valve converting tool, it is 101a, preceding
End, 101b, rear end, 1, change valve and block up body, 2, push rod, 3, spool, 4, spring, 5, " O " type sealing ring, 6, spring pad, 7, baffle ring, 8,
Deflector hole, 9, first conical surface, 10, outer-hexagonal, 11, screw thread, 12, second conical surface, 31, sealing surface, 32, seal groove, 33, sealing material
Material.
Embodiment
Embodiment,
Please refer to Fig.1 to 5, one kind changes valve and blocks up 101, has front end 101a and rear end 101b, it includes：Valve is changed to block up body 1, push away
Bar 2, spool 3, spring 4, " O " type sealing ring 5, spring pad 6 and baffle ring 7.
Wherein, change valve and block up the center of body 1 and be equipped with deflector hole 8 from the extension of front end rear end direction, the deflector hole 8 is changes valve
It is stifled to provide pressure equalisation passage.Foregoing push rod 2, spool 3, spring 4, spring pad 6 and baffle ring 7 are installed in deflector hole 8.
Corresponded to changing valve and blocking up body 1 at the 101a positions of front end, equipped with first conical surface 9 sealed between 100 inner conical surface of carrier,
Outer-hexagonal 10 is equipped with opposite rear end position.Be provided with groove on first conical surface 9, " O " type sealing ring 5 install in a groove and then
Realize and seal with carrier inner conical surface.Sealing between this conical surface and carrier inner conical surface belongs to nonmetallic sealing.
Screw thread 11 matched with carrier internal thread is offered on the outer circle wall for changing valve and blocking up body 1.During work, by suitable
With flange 103 and valve converting tool 104, stifled valve 101 will be changed on carrier 100 using the screw thread 11.
By being equiped with baffle ring 7 at front end 101a positions in deflector hole 8, spring 4 is installed on baffle ring 7 close to rear end 101b
The side in direction, is additionally provided with spring pad 6 between baffle ring 7 and spring 4.The other end of spring 4 is connected with spool 3, on the spool 3
Sealing surface 31 equipped with taper, offers seal groove 32 on sealing surface 31, and directly vulcanization has a sealing material 33 in the seal groove,
Nonmetallic sealing is sealed at this.Preferably, sealing material uses HNBR- high saturation anti-H 2 S rubber, the high saturation sulfur resistive
Change hydrogen rubber and can be used for -46 DEG C of low temperature, 120 DEG C of high temperature and carbonated and hydrogen sulfide medium.
Being provided with deflector hole 8 can be with second conical surface 12 of spool conical surface seal, when not being subject to other external force, spool
3 can realize nonmetallic sealing under the effect of spring 4 with second conical surface 12 of deflector hole.
Push rod 2 is arranged on side of the spool 3 away from spring 4, when valve converting tool 104 is installed on the rear end for changing stifled valve, pushes away
Bar 2 can promote spool 3 to extrude spring 4 and disengaged with sealing surface, realize the conducting of deflector hole.
The operation principle of the utility model is as follows：
1st, when change valve block up be installed on valve converting tool when, the push rod changed during valve blocks up can promote spool to be taken off with second conical surface
Open, deflector hole conducting, spring, which is pressurized to contract at this time, puts aside resilient energy, is blocked up changing valve among the whole process of installation, deflector hole
Remain unimpeded, the pressure in carrier can be delivered to by deflector hole changes the rear end that valve blocks up, and so blocks up preceding side pressure changing valve
Power reaches balance with rear end pressure, is blocked up changing valve almost without frictional force at outer wall thread, so just can be very by valve converting tool
Easily install changing valve and block up.
2nd, after valve converting tool is taken out, compressed recoil of spring, promotes spool and the second taper-face contact and seals, release
Change valve and block up rear end pressure until for zero, valve so can be replaced.
As long as the 3rd, when need dismounting change valve it is stifled when re-use adaptation flange and valve converting tool, promotion changes valve and blocks up push rod and push up
Valve opening core, deflector hole conducting change valve and block up forefront pressure and rear end pressure and reach balance, and thus can change valve with easy removal blocks up.
The above is only the preferred embodiment to utility model, and not the scope of utility model is defined, therefore
On the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to construction described in the utility model, spy
The equivalence changes or decoration that sign and principle are made, should all fall into the scope of protection of the utility model.
Claims (8)
1. one kind is changed valve and blocked up, there is the front end coordinated with carrier sealing, and can be with the matched rear end of valve converting tool during work；
It is characterized in that：Body, push rod, spool, spring and baffle ring are blocked up including changing valve；
It is described change valve and block up the center of body be equipped with deflector hole from the extension of front end rear end direction, close to front position in deflector hole
Place is equiped with baffle ring, and spring is installed on baffle ring close to the side of rear extreme direction, and the other end of spring is connected with spool, in deflector hole
In be provided with can be with second conical surface of spool conical surface seal；When not being subject to other external force, the spool under the action of the spring may be used
Realize and seal with second conical surface of deflector hole；The push rod is arranged on side of the spool away from spring, when valve converting tool is installed on
When changing the rear end of stifled valve, push rod can promote spool extruding spring and be disengaged with sealing surface, realize the conducting of deflector hole.
2. change valve as claimed in claim 1 to block up, it is characterised in that：It is described change valve block up body correspond at front position be equipped with carrier
First conical surface sealed between the conical surface, is equipped with outer-hexagonal at opposite rear end position；Groove is provided with first conical surface, the groove
In be provided with carrier inner conical surface realize sealing " O " type sealing ring.
3. change valve as claimed in claim 1 to block up, it is characterised in that：Spring pad is additionally provided between the baffle ring and spring.
4. change valve as claimed in claim 1 to block up, it is characterised in that：It is described change valve and block up on the outer wall of body offer and carrier internal thread
Matched screw thread.
5. change valve as described in any one of Claims 1-4 to block up, it is characterised in that：The spool and the second conical surface phase of deflector hole
Seal groove is offered on the sealing surface of cooperation, a sealing material is equipped with the seal groove, it is close between the spool and deflector hole
Seal as nonmetallic sealing.
6. change valve as claimed in claim 5 to block up, it is characterised in that：The sealing material uses HNBR- high saturation anti-H 2 S rubbers
Glue material is made.
7. change valve as claimed in claim 5 to block up, it is characterised in that：Sealing material sulfidization molding directly on spool.
8. change valve as claimed in claim 2 to block up, it is characterised in that：Being sealed between first conical surface and carrier inner conical surface is non-
Metal sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253466.8U CN207315263U (en) | 2017-09-27 | 2017-09-27 | One kind is changed valve and is blocked up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253466.8U CN207315263U (en) | 2017-09-27 | 2017-09-27 | One kind is changed valve and is blocked up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315263U true CN207315263U (en) | 2018-05-04 |
Family
ID=62428011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721253466.8U Expired - Fee Related CN207315263U (en) | 2017-09-27 | 2017-09-27 | One kind is changed valve and is blocked up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207315263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762434A (en) * | 2017-09-27 | 2018-03-06 | 苏州优力克流体控制科技有限公司 | One kind is changed valve and blocked up |
-
2017
- 2017-09-27 CN CN201721253466.8U patent/CN207315263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762434A (en) * | 2017-09-27 | 2018-03-06 | 苏州优力克流体控制科技有限公司 | One kind is changed valve and blocked up |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180504 Termination date: 20210927 |