CN204920902U - Back pressure is location structure for valve - Google Patents
Back pressure is location structure for valve Download PDFInfo
- Publication number
- CN204920902U CN204920902U CN201520670548.7U CN201520670548U CN204920902U CN 204920902 U CN204920902 U CN 204920902U CN 201520670548 U CN201520670548 U CN 201520670548U CN 204920902 U CN204920902 U CN 204920902U
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- back pressure
- fluid passage
- circular bead
- spool
- annular groove
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Abstract
The utility model provides a back pressure is location structure for valve, including the valve body, offered fluid passage along the axial of valve body, the case is installed to fluid passage's middle part inner wall, and the fluid passage of case upper end is that the longitudinal section is the stress dispersion toper section that the length trapezoidal and upper base is greater than the length of going to the bottom, has offered the annular groove on the fluid passage's between stress dispersion toper section and case the inner wall, is equipped with round collar stop in the annular groove, the circle collar stop adopts two circular bead forms, comprises last circular bead and lower circular bead, and the diameter of lower circular bead is greater than the diameter of circular bead, and lower circular bead is laid in the annular groove, and the outer wall cover of going up the circular bead is equipped with the jump ring. The utility model provides a back pressure is location structure for valve when the case became invalid, can keep the body can continue to use at on -the -spot quick replacement, and assembly methods is simple, has prolonged the life of back pressure valve, provides lower use and manufacturing cost.
Description
Technical field
The utility model belongs to petroleum drilling technology field, is specifically related to a kind of back pressure valve location structure.
Background technology
China's oil drilling tool manufacturing generally adopts arrow type back pressure valve to mainly contain arrow type, ball-type, dish, throw-in type, drilling tool float valve etc. 5 kinds, it is all the mode adopting screw thread fixing that above back pressure valve spool is fixed, the spool of screwed connection, scene cannot be changed, and often occurs that screw thread weares and teares the situation of scrapping.
Utility model content
The purpose of this utility model is that solving between the spool of existing back pressure valve and housing is screwed connection, due to corrosion reason, causes spool cannot spot replace, and easily causes back pressure valve to scrap.
For this reason, the utility model provides a kind of back pressure valve location structure, comprise valve body, axis along valve body offers fluid passage, the middle part inwall of fluid passage is provided with spool, the fluid passage of spool upper end is longitudinal section is trapezoidal and the length of upper base is greater than the stress dispersion conical section of length of going to the bottom, the inwall of the fluid passage between stress dispersion conical section and spool offers annular groove, annular block is provided with in annular groove, described annular block adopts dual stage shoulder form, be made up of upper shoulder and lower shoulder, the diameter of lower shoulder is greater than the diameter of upper shoulder, lower shoulder is placed in annular groove, and the soffit of lower shoulder contacts with the upper surface of spool, the outer wall of upper shoulder is arranged with jump ring.
The tapering of described stress dispersion conical section is 1:6.
The thickness of described annular block is 10 ~ 15mm.
The beneficial effects of the utility model: this back pressure valve location structure that the utility model provides, when spool lost efficacy, can quick-replaceable at the scene, keep body can continue to use, assembling mode is simple, extends the application life of back pressure valve, provides lower use and cost of production.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of back pressure valve location structure.
Fig. 2 is the elevation of annular block.
Fig. 3 is the top view of annular block.
Fig. 4 is the structural representation of jump ring.
Fig. 5 is the position view of spool in back pressure valve.
Description of reference numerals: 1, valve body; 2, fluid passage; 3, the vertical section of stress dispersion; 4, stress dispersion conical section; 5, spool installation place; 6, annular groove; 7, annular block; 8, upper shoulder; 9, lower shoulder; 10, jump ring; 11, spool.
Detailed description of the invention
embodiment 1:
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of back pressure valve location structure, comprise valve body 1, axis along valve body 1 offers fluid passage 2, the middle part inwall of fluid passage 2 is provided with spool 11, the fluid passage 2 of spool 11 upper end is longitudinal section is trapezoidal and the length of upper base is greater than the stress dispersion conical section 4 of length of going to the bottom, the inwall of the fluid passage 2 between stress dispersion conical section 4 and spool 11 offers annular groove 6, annular block 7 is provided with in annular groove 6, described annular block 7 adopts dual stage to take on form, be made up of upper shoulder 8 and lower shoulder 9, the diameter of lower shoulder 9 is greater than the diameter of upper shoulder 8, lower shoulder 9 is placed in annular groove 6, and the soffit of lower shoulder 9 contacts with the upper surface of spool 11, the outer wall of upper shoulder 8 is arranged with jump ring 10.
As shown in Figure 4 and Figure 5, open loop connected in star 6 in valve body 1, circular ring type block 7 is placed in annular groove 6, the outer wall being set in upper shoulder 8 again with jump ring 10 fixes, annular block 7 is caused to be fixed, circular ring type block 7 plays the effect of fixed spool 11, wherein, spool 11 is placed in spool installation place 5, the aperture of laying space is 93.5mm ~ 96.5mm, the aperture of annular groove 6 is 98.5mm ~ 102.5mm, further, drilling fluid is by fluid passage 2, concrete, drilling fluid is by the vertical section 3 of stress dispersion, again by stress dispersion conical section 4, make annular block 7 not by hydraulic blow, waterpower is applied directly on float valve.
In addition, in order to easy for installation, annular block 7 can be a complete annulus, also can be by 2 or 3, the circle composition that even more C type annulus surrounds.
This back pressure valve location structure that the utility model provides, when spool lost efficacy, can quick-replaceable at the scene, keep body can continue to use, assembling mode is simple, extends the application life of back pressure valve, provides lower use and cost of production.
embodiment 2:
On the basis of embodiment 1, as shown in Figure 1, the tapering of described stress dispersion conical section 4 is 1:6, and the thickness of described annular block 7 is 10 ~ 15mm, reduces the hydraulic blow of annular block.
This back pressure valve location structure that the utility model provides, when spool lost efficacy, can quick-replaceable at the scene, keep body can continue to use, assembling mode is simple, extends the application life of back pressure valve, provides lower use and cost of production.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection scope of the present invention with the same or analogous design of the utility model.The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (3)
1. a back pressure valve location structure, comprise valve body (1), axis along valve body (1) offers fluid passage (2), the middle part inwall of fluid passage (2) is provided with spool (11), it is characterized in that: the fluid passage (2) of spool (11) upper end is longitudinal section is trapezoidal and the length of upper base is greater than the stress dispersion conical section (4) of length of going to the bottom, the inwall of the fluid passage (2) between stress dispersion conical section (4) and spool (11) offers annular groove (6), annular block (7) is provided with in annular groove (6), described annular block (7) adopts dual stage shoulder form, be made up of upper shoulder (8) and lower shoulder (9), the diameter of lower shoulder (9) is greater than the diameter of upper shoulder (8), lower shoulder (9) is placed in annular groove (6), and the soffit of lower shoulder (9) contacts with the upper surface of spool (11), the outer wall of upper shoulder (8) is arranged with jump ring (10).
2. a kind of back pressure valve location structure as claimed in claim 1, is characterized in that: the tapering of described stress dispersion conical section (4) is 1:6.
3. a kind of back pressure valve location structure as claimed in claim 1, is characterized in that: the thickness of described annular block (7) is 10 ~ 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670548.7U CN204920902U (en) | 2015-09-01 | 2015-09-01 | Back pressure is location structure for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670548.7U CN204920902U (en) | 2015-09-01 | 2015-09-01 | Back pressure is location structure for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204920902U true CN204920902U (en) | 2015-12-30 |
Family
ID=54970039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520670548.7U Active CN204920902U (en) | 2015-09-01 | 2015-09-01 | Back pressure is location structure for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204920902U (en) |
-
2015
- 2015-09-01 CN CN201520670548.7U patent/CN204920902U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |