CN201705289U - Large-path combined floating valve for drilling tool - Google Patents
Large-path combined floating valve for drilling tool Download PDFInfo
- Publication number
- CN201705289U CN201705289U CN2010202253030U CN201020225303U CN201705289U CN 201705289 U CN201705289 U CN 201705289U CN 2010202253030 U CN2010202253030 U CN 2010202253030U CN 201020225303 U CN201020225303 U CN 201020225303U CN 201705289 U CN201705289 U CN 201705289U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- float valve
- flap
- valve seat
- 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
Links
Images
Landscapes
- Float Valves (AREA)
Abstract
The utility model discloses a large-path combined floating valve for drilling tools, comprising a hollow drilling rod joint, wherein the drilling rod joint is internally provided with one group or more floating valves that are arranged in longitudinal direction; each group of floating valves comprises a hollow valve core, a hollow valve seat that is arranged in the valve core by a buckled step, a shaft pin arranged in an installation hole on the side wall of the valve core, and a torsion spring arranged on the shaft pin; one end of the torsion spring is fixed in a clearance between the adjacent side walls of the valve core and the drilling rod joint; the other end of the torsion spring is contacted with the bottom of a valve flap; the top of the valve flap is matched with the lower end of the valve seat; sealing rings are arranged between the adjacent side walls of the valve seat and the valve core and between the adjacent side walls between the valve core and the drilling rod joint; and the bottommost valve core of the floating valve is arranged on the step in the drilling rod joint. The large-path combined floating valve for drilling tools can be further improved in the following way: abdicating holes are arranged on the side walls of the valve cores below each pin shaft, with the diameters corresponding to valve flap. The large-path combined floating valve has the advantages of good erosion resistance, long service life, large flow and good sealing performance.
Description
Technical field
The utility model relates to a kind of drilling tool float valve that is used for oil drilling.
Background technology
In oil drilling, controlled pressure drilling or under-balance drilling operation, drilling tool float valve (claiming the drilling tool flap valve again) need be installed on drill string, to prevent liquid in the drill string, gas backstreaming, what situ of drilling well needed most is a kind of big latus rectum flap valve of high-quality that can satisfy controlled pressure drilling, under-balance drilling operation; Now Chang Yong flap valve kind has: the flechette-type flap valve, drop-in check valve, board-like float valve etc., have only board-like float valve to belong to the flap valve of big flow in these valves, but existing board-like float valve, comprise the tool joint of hollow, be located at one group of float valve vertically arranging in the tool joint, every group of float valve includes the spool of hollow, be loaded on the valve seat of the hollow in the spool by the step that fastens, be loaded on the pivot pin in the spool, be loaded on the stage clip on the pivot pin, one end of stage clip contacts with the bottom of flap, the top of flap cooperates with the lower end of valve seat, and spool is loaded on the interior step of tool joint; Because pivot pin is loaded in the spool, its size is restricted, and bears the erosion of tool joint inner high voltage fluid media (medium) again, easy fracture, and application life is shorter; Flap can only be the most about 60 ° of angles in tool joint opens, and its latus rectum does not reach the maximum effect of utilizing, and the sealing performance of flap and valve seat is relatively poor.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of big latus rectum combined drilling tool float valve is provided, and it has, and abrasion-resistance is good, long service life, flow big, the advantage of good seal performance.
For achieving the above object, big latus rectum combined drilling tool float valve of the present utility model, comprise the tool joint of hollow, it is characterized in that in tool joint, being provided with a group or more float valve of vertical arrangement, every group of float valve includes the spool of hollow, be loaded on the valve seat of the hollow in the spool by the step that fastens, be loaded on the pivot pin in the spool sidewall installing hole, be loaded on the torsion spring on the pivot pin, one end of torsion spring is fixed in the gap between spool and the tool joint adjacent wall, the other end contacts with the bottom of flap, the top of flap cooperates with the lower end of valve seat, between the adjacent sidewall of valve seat and spool, and be equipped with sealing ring between the spool sidewall adjacent with tool joint; The spool of the float valve of below is loaded on the step in the tool joint;
Because the below that pivot pin is loaded in the installing hole of spool sidewall, torsion spring is positioned at flap, when flap was washed open, pivot pin and torsion spring were subjected to the erosion of medium hardly, easy fracture not, long service life;
As further improvement of the utility model, on the spool sidewall below each pivot pin, be equipped with resigning hole, the diameter of resigning hole is corresponding with flap; When flap was washed open, torsion spring and flap can be retracted in the resigning hole, and flap is 90 ° of angles to be opened, and has improved flow greatly;
As further improvement of the utility model, in the spool of the top float valve, the adjustment ring also is housed by screw thread, adjust the lower end of ring and the last end in contact of valve seat, on the sidewall of this spool, be provided with screw radially, on the outer wall of adjusting ring, be provided with corresponding locating slot, adjust ring and spool and connect by placing screw and locating slot holding screw; Adjust ring by rotating, the lengthwise position of adjustable valve seat, thereby the precompression of adjustment valve seat and flap;
As further improvement of the utility model, the group number of described float valve is two groups or more, the spool that is positioned at the float valve of top in the two adjacent groups float valve is equipped with adjusts section, adjust in section is loaded on its below float valve by screw thread the spool and with the valve seat of below float valve on end in contact, below be provided with radially screw on the spool sidewall of float valve, be provided with corresponding locating slot on the outer wall of adjusting section, the spool of adjusting section and below float valve connects by placing screw and locating slot holding screw; Adjust ring by rotating, also can adjust the lengthwise position of lower seat, thereby adjust the precompression of lower seat and flap;
As further improvement of the utility model, the valve seat of every group of float valve and flap are provided with the taper seat of cooperation, also are provided with valve seat insert on the taper seat of valve seat; Valve seat insert can be avoided erosion, improves the application life and the sealing performance of sealing circle;
As further improvement of the utility model, be equipped with groove at the center, upper surface of the flap of every group of float valve, the edge of groove is the transition cambered surface; Can cushion medium, reduce erosion the flap sealing surface;
In sum, the utlity model has that abrasion-resistance is good, long service life, flow are big, the advantage of good seal performance.
Description of drawings
Fig. 1 is the front view of the utility model embodiment one.
Fig. 2 is the front view of the utility model embodiment two.
Fig. 3 is the sectional view of flap among Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Embodiment one
As shown in Figure 1, this big latus rectum combined drilling tool float valve, comprise the tool joint 1 of hollow, be located at one group of float valve vertically arranging in the tool joint 1, this group float valve comprises the spool 2 of hollow, be loaded on the valve seat 3 of the hollow in the spool 2 by the step that fastens, be loaded on the pivot pin 4 in the spool 2 sidewall installing holes, be loaded on the torsion spring 5 on the pivot pin 4, one end 5a of torsion spring 5 is fixed in the gap between spool 2 and tool joint 1 adjacent wall, other end 5b contacts with the bottom of flap 6, on the spool sidewall below the pivot pin 4, be provided with resigning hole 2a, the diameter of resigning hole 2a is corresponding with flap 6, the top of flap 6 cooperates with the lower end of valve seat 3, between the adjacent sidewall of valve seat 3 and spool 2, and be equipped with sealing ring 7 between the adjacent sidewall of spool 2 and tool joint 1, spool 2 is loaded on the step in the tool joint 1, in spool 2, adjustment ring 8 also is housed by screw thread, adjust the lower end of ring 8 and the last end in contact of valve seat 3, on the sidewall of spool 2, be provided with screw radially, on the outer wall of adjusting ring 8, be provided with corresponding locating slot, adjust ring 8 and spool 2 and connect by placing screw and locating slot holding screw 9;
The operating principle of this drilling tool float valve is: when the fluid pressure of flap 6 tops during greater than the elastic force of the fluid pressure of its below and torsion spring 5, fluid is washed flap 6 open and is entered in the drilling tool of lower end; When the fluid pressure of flap 6 belows during greater than the fluid pressure of its top, close at the effect lower Disc 6 of torsion spring 5, can prevent effectively that drilling cuttings from refluxing by drill bit, can prevent effectively that blowout and drilling well are out of control in the drilling tool; When working drill string in not kill-job plays well-sinking, the drilling tool float valve makes the interior drilling tool of well to trip out smoothly and to be lowered to by the backflow of restriction drill string inner fluid, provides a safer working environment for not kill-job removes the work string operation; When needs are opened the bypass valve of installing the drilling tool lower end, can drop into steel ball and wash the lower end that flap 6 enters tool joint open, promote by pass vavle piston and open bypass valve; Because the below that pivot pin 4 is loaded in the installing hole of spool 2 sidewalls, torsion spring 5 is positioned at flap 6, when flap 6 was washed open, pivot pin 4 and torsion spring 5 were subjected to the erosion of medium hardly, easy fracture not, long service life; When flap 6 was washed open, torsion spring 5 and flap 6 can be retracted in the resigning hole 2a, and flap 6 is 90 ° of angles to be opened, and has improved flow greatly; Adjust ring 8 by rotating, the lengthwise position of adjustable valve seat 3, thereby the precompression of adjustment valve seat 3 and flap 6.
Embodiment two
As shown in Figures 2 and 3, the big latus rectum combined drilling tool float valve of this embodiment, comprise the tool joint 1 of hollow, be located at vertically arrange in the tool joint 1 on, following two groups of float valves, every group of float valve includes the spool 10 of hollow, be loaded on the valve seat 11 of the hollow in the spool 10 by the step that fastens, be loaded on the pivot pin 12 in the spool 10 sidewall installing holes, be loaded on the torsion spring 13 on the pivot pin 12, one end of torsion spring 13 is fixed in the gap between spool 10 and tool joint 1 adjacent wall, the other end contacts with the bottom of flap 14, on the spool sidewall below each pivot pin 12, be equipped with resigning hole 10a, the diameter of resigning hole 10a is corresponding with flap 14, the top of flap 14 cooperates with the lower end of valve seat 11, valve seat 11 and flap 14 are provided with the taper seat of cooperation, on the taper seat of valve seat 11, also be provided with valve seat insert 15, the center, upper surface of flap 14 is equipped with groove 14a, the edge of groove 14a is the transition cambered surface, between the adjacent sidewall of valve seat 11 and spool 10, and be equipped with sealing ring 16 between the adjacent sidewall of spool 10 and tool joint 1; By screw thread adjustment ring 17 is housed also in the spool 10 of float valve up, adjust the lower end of ring 17 and the last end in contact of top valve seat 11, on the sidewall of this spool 10, be provided with screw radially, on the outer wall of adjusting ring 17, be provided with corresponding locating slot, adjusting ring 17 and spool 10 connects by placing screw and locating slot holding screw 18, the spool 10 of top float valve also is provided with adjusts section 10a, adjust in section 10a is loaded on its below float valve by screw thread the spool and with the valve seat of below float valve on end in contact, below be provided with radially screw on the spool sidewall of float valve, be provided with corresponding locating slot on the outer wall of adjusting section 10a, the spool of adjusting section 10a and below float valve connects by placing screw and locating slot holding screw 19; The spool of float valve of below is loaded on the step in the tool joint 1;
The operating principle of this embodiment is: push flap 14 open when the fluid that enters from tool joint 1 top and enter indoor between two valves, greater than under the lower Disc during end pressure, fluid is washed lower Disc open and is entered in the drilling tool of lower end at pressure; When the fluid pressure of lower Disc below during greater than the fluid pressure of last flap 14, close at the effect lower Disc of torsion spring, can prevent effectively that drilling cuttings from refluxing by drill bit, can prevent effectively that blowout and drilling well are out of control in the drilling tool; When the lower Disc seal failure, last flap 14 still can stop fluid reflux in the drilling tool as defence line, second road, improves safety factor; When needs are opened the bypass valve of installing the drilling tool lower end, can drop into steel ball and wash upper and lower flap 14 open and enter the lower end of tool joint 1, promote by pass vavle piston and open bypass valve; Because the below that pivot pin 12 is loaded in the installing hole of spool 10 sidewalls, torsion spring 13 is positioned at flap 14, when flap 14 was washed open, pivot pin 12 and torsion spring 13 were subjected to the erosion of medium hardly, easy fracture not, long service life; When flap 14 was washed open, torsion spring 13 and flap 14 can be retracted in the resigning hole 10a, and flap 14 is 90 ° of angles to be opened, and has improved flow greatly; Adjust ring 17 by rotating, can adjust the lengthwise position of upper valve base 11 and lower valve base, thereby adjust the precompression of two groups of valve seats 11 and flap 14; Valve seat insert 15 is located on the taper seat of valve seat 11, can avoid erosion, improves the application life and the sealing performance of sealing circle 15; The transition cambered surface of flap groove 14a can cushion medium, reduces the erosion to the flap sealing surface.
Claims (6)
1. one kind big latus rectum combined drilling tool float valve, comprise the tool joint of hollow, it is characterized in that in tool joint, being provided with a group or more float valve of vertical arrangement, every group of float valve includes the spool of hollow, be loaded on the valve seat of the hollow in the spool by the step that fastens, be loaded on the pivot pin in the spool sidewall installing hole, be loaded on the torsion spring on the pivot pin, one end of torsion spring is fixed in the gap between spool and the tool joint adjacent wall, the other end contacts with the bottom of flap, the top of flap cooperates with the lower end of valve seat, between the adjacent sidewall of valve seat and spool, and be equipped with sealing ring between the spool sidewall adjacent with tool joint; The spool of the float valve of below is loaded on the step in the tool joint.
2. big latus rectum combined drilling tool float valve as claimed in claim 1 is characterized in that being equipped with resigning hole on the spool sidewall below each pivot pin, and the diameter of resigning hole is corresponding with flap.
3. big latus rectum combined drilling tool float valve as claimed in claim 1 or 2, it is characterized in that in the spool of the top float valve, the adjustment ring also being housed by screw thread, adjust the lower end of ring and the last end in contact of valve seat, on the sidewall of this spool, be provided with screw radially, on the outer wall of adjusting ring, be provided with corresponding locating slot, adjust ring and spool and connect by placing screw and locating slot holding screw.
4. big latus rectum combined drilling tool float valve as claimed in claim 3, the group number that it is characterized in that described float valve is two groups or more, the spool that is positioned at the float valve of top in the two adjacent groups float valve is equipped with adjusts section, adjust in section is loaded on its below float valve by screw thread the spool and with the valve seat of below float valve on end in contact, below be provided with radially screw on the spool sidewall of float valve, be provided with corresponding locating slot on the outer wall of adjusting section, the spool of adjusting section and below float valve connects by placing screw and locating slot holding screw.
5. big latus rectum combined drilling tool float valve as claimed in claim 4 is characterized in that the valve seat of every group of float valve and the taper seat that flap is provided with cooperation, also is provided with valve seat insert on the taper seat of valve seat.
6. big latus rectum combined drilling tool float valve as claimed in claim 5 is characterized in that being equipped with groove at the center, upper surface of the flap of every group of float valve, and the edge of groove is the transition cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202253030U CN201705289U (en) | 2010-06-13 | 2010-06-13 | Large-path combined floating valve for drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202253030U CN201705289U (en) | 2010-06-13 | 2010-06-13 | Large-path combined floating valve for drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705289U true CN201705289U (en) | 2011-01-12 |
Family
ID=43442444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202253030U Expired - Fee Related CN201705289U (en) | 2010-06-13 | 2010-06-13 | Large-path combined floating valve for drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705289U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594941A (en) * | 2019-01-22 | 2019-04-09 | 牡丹江鑫北方石油钻具有限责任公司 | A kind of board-like float valve core assembly with eccentric structure |
| CN111594081A (en) * | 2020-06-06 | 2020-08-28 | 青岛宏新天机械有限公司 | Integral well drilling float valve |
-
2010
- 2010-06-13 CN CN2010202253030U patent/CN201705289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594941A (en) * | 2019-01-22 | 2019-04-09 | 牡丹江鑫北方石油钻具有限责任公司 | A kind of board-like float valve core assembly with eccentric structure |
| CN111594081A (en) * | 2020-06-06 | 2020-08-28 | 青岛宏新天机械有限公司 | Integral well drilling float valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966327A (en) | Expansion pipe | |
| CN100516449C (en) | Slim-hole hydraulic controlled reducing reaming bit | |
| CN201141287Y (en) | Minute borehole hydropower presser | |
| CN201705289U (en) | Large-path combined floating valve for drilling tool | |
| CN111058787B (en) | Positioning hydraulic internal cutting knife and oil pipe cutting method | |
| CN204060585U (en) | Continuous circulation valve | |
| CN212054560U (en) | Drilling pressure control type underground circulation short joint | |
| CN203383727U (en) | Screw drill tool with long service life and high performance | |
| CN206174899U (en) | Arrow formula drilling tool floating valve for oil drilling | |
| CN106089135A (en) | Oil drilling arrow formula drilling tool float valve | |
| CN111894496A (en) | Drilling pressure control type underground circulation short circuit and coiled tubing drill plug dynamic flushing process | |
| CN102434110B (en) | High-speed turbine section for turbine drilling tool | |
| CN206190931U (en) | Elasticity pottery stop valve with adjustable | |
| CN2740771Y (en) | Self-pulping arrow back pressure valve | |
| CN201412115Y (en) | Front-mounted bypass valve of screw drill | |
| CN201292938Y (en) | Oil pump valve with guide bars | |
| CN201818247U (en) | Constant pressure protecting device of screw drilling tool | |
| CN201047270Y (en) | Frequently open type bottom hole back-pressure valve | |
| CN106949264B (en) | Underground check valve | |
| CN201373120Y (en) | Pilot valve | |
| CN203905868U (en) | Adjustment and control valve for underground flow state | |
| CN206860986U (en) | Oil drilling oiling float valve | |
| CN2688872Y (en) | Choke | |
| CN111502572B (en) | Radial drilling and drilling control valve | |
| CN2874002Y (en) | Flow path non-through remote control variable diameter stabilizer |
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: 20110112 Termination date: 20160613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |