CN202165043U - Blowout prevention safety valve and special pressure releasing tool - Google Patents
Blowout prevention safety valve and special pressure releasing tool Download PDFInfo
- Publication number
- CN202165043U CN202165043U CN2011202721675U CN201120272167U CN202165043U CN 202165043 U CN202165043 U CN 202165043U CN 2011202721675 U CN2011202721675 U CN 2011202721675U CN 201120272167 U CN201120272167 U CN 201120272167U CN 202165043 U CN202165043 U CN 202165043U
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- CN
- China
- Prior art keywords
- pressure head
- overcurrent
- head body
- spring
- spool
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- 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
The utility model relates to petroleum machinery, in particular to a blowout prevention tool in a drilling rod and a special pressure releasing tool for the blowout prevention tool. A blowout prevention safety valve comprises a body (1), a spring seat (2), a valve plug (3), a valve seat (4) and a spring (5), wherein the spring (5) is sleeved on the spring seat (2), the valve plug (3) is sleeved at the upper part of the spring seat (2), and the lower end of the valve plug (3) pushes against the spring (5).The pressure releasing tool comprises a pressure releasing head body (7) and a pressure releasing rod (8). The utility model has the advantages that the drift diameter is large, the service life is long, and the reassembling and the maintenance are convenient. The pressure releasing device is jacked to open by threading-in, the operation is simple, the pressure releasing is stable, and the pressure releasing device is safe and reliable.
Description
Technical field
The utility model relates to petroleum machinery, is specifically related to interior blowout prevention instrument of a kind of drilling rod and special use thereof and puts press tool.
Background technology
The blowout prevention safety valve is a blowout prevention instrument in a kind of important drilling rod.Its effect is that the general reference high-pressure oil gas sprays check and play the blowout prevention effect in drilling tool.The conventional check valves latus rectum is little, and drilling fluid overcurrent speed is slow, outside its spring assembling is exposed to, has just caused spring to be prone to erosion, thereby has reduced application life, brings difficulty to maintenance.It is to put into drill pipe bore with the vertical compression bar that tradition is put pressure device, applies certain normal pressure on the polished rod being pressed in weight, makes it put pressure, but this kind method puts and press unstablely, operating difficulties, safeguards inconvenience, mainly is dangerous.
Summary of the invention
The utility model technical problem to be solved is: provide that a kind of latus rectum is big, long service life, dismounting and blowout prevention safety valve easy to maintenance and putting press stable, safe and reliable special use to put press tool.
The technical solution of the utility model is: the blowout prevention safety valve, comprise body, spring base, spool, valve seat and spring, and the body upper end is provided with internal thread; Said inner body wall is provided with the overcurrent annular groove, and inner body wall is provided with Nei Katai in the below of overcurrent annular groove, and said spring base is provided with the body of wild card platform for the bottom outer wall; Said spool is top closure and is provided with the cylindrical body of male cone (strobilus masculinus) in tip edge, and spool has flowing hole on top wall, and said valve seat is the body that the lower end is provided with inner conical surface; Spring base places on the Nei Katai of body; Spring housing is on spring base, and valve core housing is on spring base top, and its flowing hole is positioned at the overcurrent annular groove place of body; The spool lower end is against on the spring; Valve seat is screwed onto body on the inwall of overcurrent annular groove top, and the inner conical surface of its lower end matches with the male cone (strobilus masculinus) on spool top, and valve seat and inner body wall are tightly connected.
Put press tool, comprise and put the pressure head body and put depression bar, put the pressure head body for being screwed onto the plug shape body on the safety valve body; Put the axis hole that the pressure head body has perforation, put stage casing, pressure head axon hole and be milled with the overcurrent chamber, put pressure head body bottom and be provided with flowing hole around the axis hole and be communicated with the overcurrent chamber; Put pressure head axon hole epimere and be provided with internal thread; Put depression bar and put by the push rod section of bottom and top and press section to constitute, put and press section to have the body of overcurrent window, put and press a section outer wall bottom to be provided with external screw thread for the bottom; Top is provided with the force section that is used to screw; Put depression bar and be screwed onto in the axis hole of putting the pressure head body, its push rod section is stretched out in the bottom and is put pressure head axon hole, and its overcurrent window cooperates with the overcurrent chamber of putting the pressure head body.
The technique effect of the utility model is: it has, and latus rectum is big, long service life, dismounting and advantage easy to maintenance, and this is put pressure device and adopts the screw thread precession to back down, simple to operate, put press stable, safe and reliable.
Description of drawings
Fig. 1 is the sectional structure chart of the utility model blowout prevention safety valve;
Fig. 2 is put the sectional structure chart of press tool for the utility model.
The specific embodiment
As shown in Figure 1, the blowout prevention safety valve comprises body 1, spring base 2, spool 3, valve seat 4 and spring 5; Body 1 upper end is provided with internal thread, and said body 1 inwall is provided with overcurrent annular groove 6, and body 1 inwall is provided with Nei Katai in the below of overcurrent annular groove 6; Said spring base 2 is provided with the body of wild card platform for the bottom outer wall, and said spool 3 is provided with the cylindrical body of male cone (strobilus masculinus) for top closure and in tip edge, and spool 3 has flowing hole on top wall; Said valve seat 4 is provided with the body of inner conical surface for the lower end, and spring base 2 places on the Nei Katai of body 1, and spring 5 is enclosed within on the spring base 2; Spool 3 is enclosed within spring base 2 tops; Its flowing hole is positioned at overcurrent annular groove 6 places of body 1, and spool 3 lower ends are against on the spring 5, and valve seat 4 is screwed onto body 1 on the inwall of overcurrent annular groove 6 tops; The inner conical surface of its lower end matches with the male cone (strobilus masculinus) on spool 3 tops, and valve seat 3 is connected with body 1 inner wall sealing.
As shown in Figure 2, put press tool, comprise and put pressure head body 7 and put depression bar 8; Put pressure head body 7 for being screwed onto the plug shape body of safety valve body 1 upper end, put the axis hole that pressure head body 7 has perforation, put pressure head body 7 axis hole stage casings and be milled with overcurrent chamber 9; Put pressure head body 7 bottoms and be provided with flowing hole around the axis hole and be communicated with, put pressure head body 7 axis hole epimeres and be provided with internal thread, put depression bar 8 and put pressure by the push rod section of bottom and top and section constitute with overcurrent chamber 9; Put and press section to have the body of overcurrent window for the bottom; Put and press section outer wall bottom to be provided with external screw thread, top is provided with the force section that is used to screw, and puts depression bar 8 and is screwed onto in the axis hole of putting pressure head body 7; Its push rod section is stretched out in the bottom and is put pressure head body 7 axis holes, and its overcurrent window cooperates with the overcurrent chamber of putting pressure head body 7.
The said pressure head body 7 outer wall tops of putting are provided with handle stem 10.
Said putting on depression bar 8 external screw threads is rotary with lock nut 11.
The utlity model has following advantage:
1, latus rectum is big, has accelerated bit speed thereby mud flow rate is increased, and it is big by 1/3rd that latus rectum is compared other flap valve latus rectums of same specification;
2, its design medi-spring has adopted disguised assembling, is difficult for having been prolonged application life by slurry erosion, corrosion; And outside conventional check valves spring assembling is exposed to, just caused spring to be prone to erosion, thereby reduced application life;
3, its seal has adopted high-temperature resistant rubber, and maximum temperature can reach 350 °, but operate as normal still at high temperature;
4, easy accessibility is convenient to maintenance.
Claims (4)
1. the blowout prevention safety valve comprises body (1), spring base (2), spool (3), valve seat (4) and spring (5), it is characterized in that; Said body (1) inwall is provided with overcurrent annular groove (6); Body (1) inwall is provided with Nei Katai in the below of overcurrent annular groove (6), and said spring base (2) is provided with the body of wild card platform for the bottom outer wall, and said spool (3) is provided with the cylindrical body of male cone (strobilus masculinus) for top closure and in tip edge; Spool (3) has flowing hole on top wall; Said valve seat (4) is provided with the body of inner conical surface for the lower end, and spring base (2) places on the Nei Katai of body (1), and spring (5) is enclosed within on the spring base (2); Spool (3) is enclosed within spring base (2) top; Its flowing hole is positioned at the overcurrent annular groove (6) of body (1) to be located, and spool (3) lower end is against on the spring (5), and valve seat (4) is screwed onto body (1) on the inwall of overcurrent annular groove (6) top; The inner conical surface of its lower end matches with the male cone (strobilus masculinus) on spool (3) top, and valve seat (3) is connected with body (1) inner wall sealing.
2. put press tool, it is characterized in that, it comprises puts pressure head body (7) and puts depression bar (8); Put pressure head body (7) for being screwed onto the plug shape body on the safety valve body as claimed in claim 1 (1); Put the axis hole that pressure head body (7) has perforation, put pressure head body (7) axis hole stage casing and be milled with overcurrent chamber (9), put pressure head body (7) bottom and be provided with flowing hole around the axis hole and be communicated with overcurrent chamber (9); Put pressure head body (7) axis hole epimere and be provided with internal thread; Put depression bar (8) and put by the push rod section of bottom and top and press section to constitute, put and press section to have the body of overcurrent window, put and press a section outer wall bottom to be provided with external screw thread for the bottom; Top is provided with the force section that is used to screw; Put depression bar (8) and be screwed onto in the axis hole of putting pressure head body (7), its push rod section is stretched out in the bottom and is put pressure head body (7) axis hole, and its overcurrent window cooperates with the overcurrent chamber of putting pressure head body (7).
3. the press tool of putting as claimed in claim 2 is characterized in that, said pressure head body (7) the outer wall top of putting is provided with handle stem (10).
4. the press tool of putting as claimed in claim 2 is characterized in that, said putting on depression bar (8) external screw thread is rotary with lock nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202721675U CN202165043U (en) | 2011-07-29 | 2011-07-29 | Blowout prevention safety valve and special pressure releasing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202721675U CN202165043U (en) | 2011-07-29 | 2011-07-29 | Blowout prevention safety valve and special pressure releasing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165043U true CN202165043U (en) | 2012-03-14 |
Family
ID=45800878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202721675U Expired - Fee Related CN202165043U (en) | 2011-07-29 | 2011-07-29 | Blowout prevention safety valve and special pressure releasing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256072A (en) * | 2013-06-09 | 2013-08-21 | 武汉大学 | Anti-spray device for assisting high-pressure water jet slotting |
-
2011
- 2011-07-29 CN CN2011202721675U patent/CN202165043U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256072A (en) * | 2013-06-09 | 2013-08-21 | 武汉大学 | Anti-spray device for assisting high-pressure water jet slotting |
| CN103256072B (en) * | 2013-06-09 | 2015-09-02 | 武汉大学 | A kind of additional high pressure water jet slot blowout hookup |
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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 |
Granted publication date: 20120314 Termination date: 20150729 |
|
| EXPY | Termination of patent right or utility model |