CN206448783U - A kind of automatic grouting formula back pressure valve - Google Patents
A kind of automatic grouting formula back pressure valve Download PDFInfo
- Publication number
- CN206448783U CN206448783U CN201621377316.3U CN201621377316U CN206448783U CN 206448783 U CN206448783 U CN 206448783U CN 201621377316 U CN201621377316 U CN 201621377316U CN 206448783 U CN206448783 U CN 206448783U
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- Prior art keywords
- valve
- circular cone
- mud
- back pressure
- piston
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Abstract
The utility model discloses a kind of automatic grouting formula back pressure valve, belong to drilling equipment technical field, including valve body, valve element and the fulcrum bearing and valve seat that are arranged in valve body, fulcrum bearing is located at below valve seat, it is characterised in that：Piston is provided with the valve body, the piston bush is provided with the first mud return flow line, the piston on the valve seat on valve element and is provided with the second mud return flow line.The utility model can pour into mud in well in drilling rod automatically, and just connecting provisions for grouting without often putting down a part of drilling rod pours into mud into drilling rod, is greatly reduced quantities, time saving and energy saving, effectively reduction grouting cost.
Description
Technical field
The utility model is related to drilling equipment technical field, more particularly to a kind of automatic grouting formula back pressure valve.
Background technology
Back pressure valve is a kind of anti-interior device sprayed in drilling process, is a kind of ball-and-seat, back pressure valve can be effective
Prevent formation fluid by bit port enter drilling tool in.
Existing back pressure valve mainly includes valve body, fulcrum bearing, valve element and valve seat.Its structural principle is in instrument hydrophthalmia
Have a taper movable valve plug, during installation its big end down, small end upward, when mud by hydrophthalmia from top to down when, flow resistance
It is smaller, it can pass through；When from bottom to top anti-channeling flows mud out of drill string, the thrust that its big end is subject to is larger, and promotees
Move up taper head, until the valve element conical surface is fitted with the valve seat conical surface, so as to reach the purpose of closure hydrophthalmia.Generally
Made up a joint in kill-job, drilling and can play a part of preventing mud from regurgitating in going down process.
Publication No. CN 203547660U, publication date disclosed one kind for the Chinese patent literature of on 04 16th, 2014
Back pressure valve, it is characterised in that：Including valve body, Compounded rubber plug, eyelet；The valve body is cylinder, along its axis direction
It is provided with slurry channel；Annular projection is provided with described valve body one end, the Compounded rubber plug is placed in the annular projection, will
The slurry channel closure；Annular groove is provided with the inwall of the slurry channel, the eyelet is placed in the ring
In connected in star；On the Compounded rubber plug, towards the eyelet direction, connecting portion is provided with；The connecting portion is placed in described
In slurry channel, block is provided with its free end；When the Compounded rubber plug blocks the slurry channel, the block is worn
The eyelet is crossed, the eyelet can stop that the block is moved towards the direction of the annular projection.The patent
Back pressure valve disclosed in document, although good sealing and choked flow effect can be played, prevent from regurgitating, it is to avoid cause engineering thing
Therefore.But, using the patent document as the prior art of representative, equal existing defects：In lower brill, a part of drilling rod is often put down, just
Need connection provisions for grouting to pour into mud into drilling rod, after having filled, then remove provisions for grouting, be put into next section drilling rod, so weight
Multiple to complete lower brill action, quantities is very big, wastes time and energy, it is necessary to pour into substantial amounts of mud, grouting cost is high.Back pressure is all
Spring is installed between your valve element and base, spring is socketed on the valve rod of valve element, and spring one end is connected on base, another
End is connected on the circular cone of valve element, and because the diameter of valve rod is smaller, back pressure valve is during long-term use, above and below valve element
Motion, spring also can ceaselessly return and compression, spring easily deforms by excessive compression, cause the circular cone of valve element without
Method fast and effectively parking position accuracy, it is impossible to valve seat conical surface good fit, and then do not reach the purpose for blocking hydrophthalmia.
Utility model content
There is provided a kind of automatic grouting formula back pressure valve, this reality in order to overcome the defect of above-mentioned prior art for the utility model
Mud in well can be poured into new in drilling rod automatically, provisions for grouting is just connected into drilling rod without often putting down a part of drilling rod
Mud is poured into, quantities is greatly reduced, it is time saving and energy saving, effectively reduce grouting cost.
The utility model is achieved through the following technical solutions：
A kind of automatic grouting formula back pressure valve, including valve body, valve element and the fulcrum bearing and valve seat that are arranged in valve body, supporting
Seat is located at below valve seat, it is characterised in that：Piston is provided with the valve body, the piston bush is on valve element, on the valve seat
It is provided with the first mud return flow line, the piston and is provided with the second mud return flow line.
The valve element includes upper valve rod, circular cone and lower valve rod successively from top to bottom, and the upper end of upper valve rod is provided with fixation
The big end of the small end connection of nut, lower end and circular cone, lower valve rod one end and circular cone is connected, and the other end is stretched into fulcrum bearing.
The valve seat is adapted with the big end cone face of circular cone.
Spring is provided with the lower valve rod, spring is contacted with fulcrum bearing.
Sealing ring is provided between the circular cone and valve seat, sealing ring is nested in the big end cone face of circular cone.
Spring groove is provided with the big end of the circular cone, one end of spring is contacted with the bottom of spring groove, the other end and branch
Bearing seat contact.
Opening is provided with the circular cone, opening is connected with spring groove.
It is provided with the inwall of the valve body on step, step and is provided with pressure cap, pressure cap is located above piston, pressure cap and valve
Body is connected through a screw thread.
During lower brill, by drilling tool together with back pressure valve G.I.H, in well mud under the effect of the pressure, i.e. annular space pressure
In the case of being higher than body cavity by force, mud enters the interior intracavitary of valve body by fulcrum bearing in well, sequentially passes through the first of valve seat
Mud return flow line, the second mud return flow line of piston is back in drilling rod, completes being acted from grouting in drilling rod.Just following
During ring mud, mud on ground in grouting equipment squeezes into drilling rod by slush pump, and to enter back pressure together with mud in the well in drilling rod all
In your valve body, mud promotes valve element to move down, and the circular cone of valve element is departed from valve seat, while the first mud that piston is blocked on valve seat
Starch return flow line, mud just can smoothly flow through whole drilling tool, be come out from bottom bit port, but within well drilling rod with
Outer annular space is flowed on ground, and sandstone that shaft bottom can be thus come outbreak out etc. are taken away.
The beneficial effects of the utility model are mainly manifested in following aspect：
First, piston is provided with the utility model, valve body, piston bush is provided with the backflow of the first mud on valve element, on valve seat
The second mud return flow line is provided with passage, piston, in use, by drilling tool together with back pressure valve G.I.H, mud in well
Under the effect of the pressure, i.e., in the case that annular space pressure is higher than body cavity, mud enters valve body to slurry by fulcrum bearing in well
Interior intracavitary, sequentially passes through the first mud return flow line of valve seat, and the second mud return flow line of piston is back in drilling rod, completes
Being acted from grouting in drilling rod, for prior art, provisions for grouting is just connected into drilling rod without often putting down a part of drilling rod
Mud is poured into, provisions for grouting is removed after having filled again, next section drilling rod is put into, is greatly reduced quantities, it is time saving and energy saving, and
Grouting cost is effectively reduced, the potential safety hazard of manual grouting presence is also eliminated.
2nd, the utility model, valve element includes upper valve rod, circular cone and lower valve rod, the upper end of upper valve rod successively from top to bottom
Fixing nut is provided with, the small end connection of lower end and circular cone, the big end connection of lower valve rod one end and circular cone, the other end is stretched into
In fulcrum bearing, good guiding can be carried out to piston by fixing nut, when direct circulation mud, piston can be more smooth
Block the first mud return flow line.
3rd, the utility model, valve seat is adapted with the big end cone face of circular cone, can play good in blowout or well kick
Plugging effect, prevent that mud is regurgitated in well.
4th, spring is provided with the utility model, lower valve rod, spring is contacted with fulcrum bearing, by setting up spring, when just following
During ring mud, after mud washes the circular cone of valve element open, because spring is contacted with fulcrum bearing, the active force of spring being capable of a part
Offset the impulse force that mud is produced to circular cone, it is to avoid circular cone hits fulcrum bearing, can effectively protect circular cone, and then ensure valve
The normal of core is used；When occurring blowout or well kick, the active force of spring can accelerate the movement of circular cone again, make valve element and valve
Seat rapid closing, prevents mud from regurgitating.
5th, the utility model, is provided with sealing ring between circular cone and valve seat, sealing ring is nested in the big end cone of circular cone
On face, after long-time use, gap is easily produced between circular cone and valve seat, good sealing can be carried out by sealing ring,
And then can effectively prevent that mud is regurgitated in well, is further ensured that drilling safety.
6th, spring groove is provided with the utility model, the big end of circular cone, one end of spring is contacted with the bottom of spring groove,
The other end is contacted with fulcrum bearing, during long-term use, and valve element moves up and down, and spring also ceaselessly can compress and reset,
By setting up spring groove, when direct circulation mud, a part for spring is contained in spring groove, when spring-compressed to a certain extent
When, the big end end face of circular cone is contacted with fulcrum bearing, spring can be prevented to be overly compressed and deform, and ensures that the use of spring is steady
It is qualitative, enable circular cone parking position accuracy and valve seat carry out it is good fit, prevent that mud is regurgitated in well.
7th, opening is provided with the utility model, circular cone, opening is connected with spring groove, when being easy to direct circulation mud
The flowing of liquid, ensures the smoothness of direct circulation mud.
8th, it is provided with the utility model, the inwall of valve body on step, step and is provided with pressure cap, pressure cap is located on piston
Side, pressure cap is connected through a screw thread with valve body, spacing by setting pressure cap to be carried out to piston, when preventing from being in the milk certainly, mud in well
Piston is washed from valve body by slurry, can ensure the stability in use of whole back pressure valve.
Brief description of the drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, its
In：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model embodiment 2；
Fig. 3 is the structural representation of the utility model embodiment 3；
Fig. 4 is the structural representation of the utility model embodiment 4；
Marked in figure：1st, valve body, 2, valve element, 3, fulcrum bearing, 4, valve seat, 5, piston, the 6, first mud return flow line, 7,
Two mud return flow lines, 8, upper valve rod, 9, circular cone, 10, lower valve rod, 11, fixing nut, 12, spring, 13, sealing ring, 14,
Spring groove, 15, opening, 16, step, 17, pressure cap.
Embodiment
Embodiment 1
Referring to Fig. 1, a kind of automatic grouting formula back pressure valve, including valve body 1, valve element 2 and the fulcrum bearing being arranged in valve body 1
3 and valve seat 4, fulcrum bearing 3, which is located in the lower section of valve seat 4, the valve body 1, is provided with piston 5, and the piston 5 is enclosed on valve element 2, institute
State and the first mud return flow line 6 is provided with valve seat 4, the second mud return flow line 7 is provided with the piston 5.
The present embodiment is to be provided with piston in most basic embodiment, valve body, and piston bush is provided with valve element on valve seat
The second mud return flow line is provided with first mud return flow line, piston, in use, by drilling tool together with back pressure valve tripping in
In well, under the effect of the pressure, i.e., in the case that annular space pressure is higher than body cavity, mud passes through fulcrum bearing to mud in well in well
Into the interior intracavitary of valve body, the first mud return flow line of valve seat is sequentially passed through, the second mud return flow line of piston is back to
In drilling rod, being acted from grouting in drilling rod is completed, for prior art, grouting dress is just connected without often putting down a part of drilling rod
Put and mud is poured into drilling rod, remove provisions for grouting after having filled again, be put into next section drilling rod, be greatly reduced quantities, save
Shi Shengli, and grouting cost is effectively reduced, also eliminate the potential safety hazard of manual grouting presence.
Embodiment 2
Referring to Fig. 2, a kind of automatic grouting formula back pressure valve, including valve body 1, valve element 2 and the fulcrum bearing being arranged in valve body 1
3 and valve seat 4, fulcrum bearing 3, which is located in the lower section of valve seat 4, the valve body 1, is provided with piston 5, and the piston 5 is enclosed on valve element 2, institute
State and the first mud return flow line 6 is provided with valve seat 4, the second mud return flow line 7 is provided with the piston 5.
The valve element 2 includes upper valve rod 8, circular cone 9 and lower valve rod 10 successively from top to bottom, and the upper end of upper valve rod 8 is set
There is fixing nut 11, lower end is connected with the small end of circular cone 9, the one end of lower valve rod 10 is connected with the big end of circular cone 9, and the other end is stretched
Enter in fulcrum bearing 3.
The valve seat 4 is adapted with the big end cone face of circular cone 9.
The present embodiment is a better embodiment, and valve element includes upper valve rod, circular cone and lower valve rod successively from top to bottom, on
The upper end of valve rod is provided with fixing nut, and the small end of lower end and circular cone is connected, and the big end of lower valve rod one end and circular cone is connected,
The other end is stretched into fulcrum bearing, and good guiding, when direct circulation mud, piston energy can be carried out to piston by fixing nut
It is enough more smoothly to block the first mud return flow line.Valve seat is adapted with the big end cone face of circular cone, in blowout or well kick
When can play good plugging effect, prevent that mud is regurgitated in well.
Embodiment 3
Referring to Fig. 3, a kind of automatic grouting formula back pressure valve, including valve body 1, valve element 2 and the fulcrum bearing being arranged in valve body 1
3 and valve seat 4, fulcrum bearing 3, which is located in the lower section of valve seat 4, the valve body 1, is provided with piston 5, and the piston 5 is enclosed on valve element 2, institute
State and the first mud return flow line 6 is provided with valve seat 4, the second mud return flow line 7 is provided with the piston 5.
The valve element 2 includes upper valve rod 8, circular cone 9 and lower valve rod 10 successively from top to bottom, and the upper end of upper valve rod 8 is set
There is fixing nut 11, lower end is connected with the small end of circular cone 9, the one end of lower valve rod 10 is connected with the big end of circular cone 9, and the other end is stretched
Enter in fulcrum bearing 3.
The valve seat 4 is adapted with the big end cone face of circular cone 9.
Spring 12 is provided with the lower valve rod 10, spring 12 is contacted with fulcrum bearing 3.
Sealing ring 13 is provided between the circular cone 9 and valve seat 4, sealing ring 13 is nested in the big end cone face of circular cone 9
On.
The present embodiment is to be provided with spring on another better embodiment, lower valve rod, and spring is contacted with fulcrum bearing, by increasing
If spring, when direct circulation mud, after mud washes the circular cone of valve element open, because spring is contacted with fulcrum bearing, the work of spring
It a part of can firmly offset the impulse force that mud is produced to circular cone, it is to avoid circular cone hits fulcrum bearing, can effectively protect cone
Shape block, and then ensure that the normal of valve element is used；When occurring blowout or well kick, the active force of spring can accelerate circular cone again
It is mobile, make valve element and valve seat rapid closing, prevent mud from regurgitating.Sealing ring is provided between circular cone and valve seat, sealing ring is embedding
It is enclosed in the big end cone face of circular cone, after long-time use, gap is easily produced between circular cone and valve seat, passes through sealing ring energy
Good sealing is enough carried out, and then can effectively prevent that mud is regurgitated in well, is further ensured that drilling safety.
Embodiment 4
Referring to Fig. 4, a kind of automatic grouting formula back pressure valve, including valve body 1, valve element 2 and the fulcrum bearing being arranged in valve body 1
3 and valve seat 4, fulcrum bearing 3, which is located in the lower section of valve seat 4, the valve body 1, is provided with piston 5, and the piston 5 is enclosed on valve element 2, institute
State and the first mud return flow line 6 is provided with valve seat 4, the second mud return flow line 7 is provided with the piston 5.
The valve element 2 includes upper valve rod 8, circular cone 9 and lower valve rod 10 successively from top to bottom, and the upper end of upper valve rod 8 is set
There is fixing nut 11, lower end is connected with the small end of circular cone 9, the one end of lower valve rod 10 is connected with the big end of circular cone 9, and the other end is stretched
Enter in fulcrum bearing 3.
The valve seat 4 is adapted with the big end cone face of circular cone 9.
Spring 12 is provided with the lower valve rod 10, spring 12 is contacted with fulcrum bearing 3.
Sealing ring 13 is provided between the circular cone 9 and valve seat 4, sealing ring 13 is nested in the big end cone face of circular cone 9
On.
Spring groove 14 is provided with the big end of the circular cone 9, one end of spring 12 is contacted with the bottom of spring groove 14, another
End is contacted with fulcrum bearing 3.
Opening 15 is provided with the circular cone 9, opening 15 is connected with spring groove 14.
It is provided with the inwall of the valve body 1 on step 16, step 16 and is provided with pressure cap 17, pressure cap 17 is located on piston 5
Side, pressure cap 17 is connected through a screw thread with valve body 1.
The present embodiment is that spring groove is provided with preferred forms, the big end of circular cone, one end of spring and spring groove
Bottom is contacted, and the other end is contacted with fulcrum bearing, during long-term use, and valve element moves up and down, and spring also can be pressed ceaselessly
Contracting and reset, by setting up spring groove, when direct circulation mud, a part for spring is contained in spring groove, works as spring-compressed
When to a certain extent, the big end end face of circular cone is contacted with fulcrum bearing, spring can be prevented to be overly compressed and deform, and ensures bullet
The stability in use of spring, enable circular cone parking position accuracy and valve seat carry out it is good fit, prevent that mud is regurgitated in well.Taper
Opening is provided with block, opening is connected with spring groove, the flowing of liquid when being easy to direct circulation mud ensures direct circulation mud
Smoothness.It is provided with the inwall of valve body on step, step and is provided with pressure cap, pressure cap is located above piston, pressure cap leads to valve body
Threaded connection is crossed, it is spacing by setting pressure cap to be carried out to piston, prevent that piston is washed from valve by mud in well from when being in the milk
Body, can ensure the stability in use of whole back pressure valve.
Claims (7)
1. a kind of automatic grouting formula back pressure valve, including valve body（1）, valve element（2）And it is arranged on valve body（1）Interior fulcrum bearing（3）
And valve seat（4）, fulcrum bearing（3）Positioned at valve seat（4）Lower section, it is characterised in that：The valve body（1）Inside it is provided with piston（5）, it is described
Piston（5）It is enclosed on valve element（2）On, the valve seat（4）On be provided with the first mud return flow line（6）, the piston（5）On be provided with
Two mud return flow lines（7）.
2. a kind of automatic grouting formula back pressure valve according to claim 1, it is characterised in that：The valve element（2）On to
Under successively include upper valve rod（8）, circular cone（9）And lower valve rod（10）, upper valve rod（8）Upper end be provided with fixing nut（11）,
Lower end and circular cone（9）Small end connection, lower valve rod（10）One end and circular cone（9）The connection of big end, the other end stretches into supporting
Seat（3）It is interior.
3. a kind of automatic grouting formula back pressure valve according to claim 2, it is characterised in that：The valve seat（4）With taper
Block（9）Big end cone face be adapted.
4. a kind of automatic grouting formula back pressure valve according to claim 2, it is characterised in that：The lower valve rod（10）On set
It is equipped with spring（12）, spring（12）With fulcrum bearing（3）Contact.
5. a kind of automatic grouting formula back pressure valve according to claim 2, it is characterised in that：The circular cone（9）With valve
Seat（4）Between be provided with sealing ring（13）, sealing ring（13）It is nested in circular cone（9）Big end cone face on.
6. a kind of automatic grouting formula back pressure valve according to claim 4, it is characterised in that：The circular cone（9）It is big
Spring groove is provided with end（14）, spring（12）One end and spring groove（14）Bottom contact, the other end and fulcrum bearing（3）Connect
Touch.
7. a kind of automatic grouting formula back pressure valve according to claim 6, it is characterised in that：The circular cone（9）On open
There is opening（15）, opening（15）With spring groove（14）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377316.3U CN206448783U (en) | 2016-12-15 | 2016-12-15 | A kind of automatic grouting formula back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377316.3U CN206448783U (en) | 2016-12-15 | 2016-12-15 | A kind of automatic grouting formula back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206448783U true CN206448783U (en) | 2017-08-29 |
Family
ID=59672782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621377316.3U Expired - Fee Related CN206448783U (en) | 2016-12-15 | 2016-12-15 | A kind of automatic grouting formula back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206448783U (en) |
-
2016
- 2016-12-15 CN CN201621377316.3U patent/CN206448783U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20170829 Termination date: 20171215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |