CN203404438U - Coring inner cylinder vent valve - Google Patents
Coring inner cylinder vent valve Download PDFInfo
- Publication number
- CN203404438U CN203404438U CN201320448207.6U CN201320448207U CN203404438U CN 203404438 U CN203404438 U CN 203404438U CN 201320448207 U CN201320448207 U CN 201320448207U CN 203404438 U CN203404438 U CN 203404438U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- inner cylinder
- coring
- valve body
- 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
The utility model relates to the technical field of coring of oil and natural gas well drilling, in particular to a coring inner cylinder vent valve. An inner cylinder body of the coring inner cylinder vent valve is connected with a valve body, a through hole is formed in the center of the valve body, and the right end of the valve body is connected with a locking cover. A valve rod is placed in the valve body, the right end of the valve rod penetrates through the locking cover, a vent hole is formed in the valve rod, a sealing ring is mounted at the right end of the valve rod which is sleeved with a spring, the left end of the spring abuts against the end face of the valve rod, the right end of the spring abuts against the locking cover, and a steel ball plugs the through hole in the center of the valve body through the valve rod. The coring inner cylinder vent valve timely discharges gas contained in rock cores and pressure generated due to volume compression in the inner cylinder, improves rock core quality, reduces the resistance of the rock core for entering the cylinder, and improves the safety of construction of coring work. The defects that an inner cylinder of an existing coring tool is not provided with a vent device, and gas discharging and pressure releasing can not be achieved are overcome.
Description
Technical field:
The utility model relates to a kind of oil and gas drilling and coring delivery technical field, particularly a kind of coring inner drum outlet valve.
Background technique:
Domestic existing core-extracting toolsinternal barrel is seamless steel cylinder or Al-alloy pipe, on inner core without venting gas appliance, often cause following two aspect problems: the gas containing in rock core on the one hand constantly discharges and cannot immediately discharge, rock core can be destroyed because of gas expansion, affect core quality, bring difficulty to follow-up core analysis; On the other hand in drilling process along with rock core constantly enters inner core, inner core space reduces gradually, pressure raises, rising pressure cannot discharge, and directly reaction, on rock core, enters and causes obstruction rock core, while rock core when going out the heart easily produces " blowing out " and collapses phenomenon, threatens personal safety.
Model utility content:
The technical problems to be solved in the utility model is to provide a kind of coring inner drum outlet valve, this device has been realized the pressure producing because of volume compression in contained gas and inner core in rock core has been discharged in time, improve core quality, reduce rock core and enter a resistance, improve the Security of coring operation construction.Overcome on existing core-extracting toolsinternal barrel without venting gas appliance deficiency that cannot exhaust pressure relief.
Technical solution adopted in the utility model is: a kind of coring inner drum outlet valve, comprises inner barrel; Inner barrel connects valve body, valve body center has through hole, valve body right-hand member connects tightening cover, and valve rod is placed in valve body, and valve rod right-hand member is through tightening cover, on valve rod, have exhaust port, valve rod right-hand member is provided with seal ring, and spring housing is contained on valve rod, and spring left end withstands on valve rod end face, spring right-hand member withstands on tightening cover, and steel ball blocks valve body central through bore by valve rod.
The beneficial effects of the utility model are: the utility model is owing to having adopted valve body and valve rod, thereby have the timely function of discharging of the pressure producing because of volume compression in contained gas and inner core in rock core, improve core quality, reduce rock core and enter a resistance, improve the Security of coring operation construction, simple in structure, easy to operate.
Accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Embodiment:
As shown in Figure 1, a kind of coring inner drum outlet valve, comprises inner barrel 1; Inner barrel 1 connects valve body 2, valve body 2 centers have through hole, valve body 2 right-hand members connect tightening cover 7, and valve rod 4 is placed in valve body 2, and valve rod 4 right-hand members are through tightening cover 7, on valve rod 4, have exhaust port, valve rod 4 right-hand members are provided with seal ring 6, and spring 5 is sleeved on valve rod 4, and spring 5 left ends withstand on valve rod 4 end faces, spring 5 right-hand members withstand on tightening cover 7, and steel ball 3 blocks valve body 2 central through bores by valve rod 4.
The utility model is evenly distributed on inner core, mono-of every 40cm, in core-drilling process, back down steel ball 3 because rock core enters the formed pressure of volume compression on gas in rock core and inner core top, promotes valve rod 4, spring 5 compressions, gas in inner core and high pressure discharge the exhaust port along on valve rod 4, after exhaust pressure relief, valve rod 4 recovers original state under the effect of spring 5, and steel ball 3 is shut inner core, and inner core outer fluid cannot enter inner core.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technological scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; As long as meet, use needs, all within protection domain of the present utility model.
Claims (1)
1. a coring inner drum outlet valve, comprises inner barrel (1); It is characterized in that: inner barrel (1) connects valve body (2), valve body (2) center has through hole, valve body (2) right-hand member connects tightening cover (7), valve rod (4) is placed in valve body (2), valve rod (4) right-hand member is through tightening cover (7), valve rod has exhaust port on (4), valve rod (4) right-hand member is provided with seal ring (6), spring (5) is sleeved on valve rod (4), spring (5) left end withstands on valve rod (4) end face, it is upper that spring (5) right-hand member withstands on tightening cover (7), and steel ball (3) blocks valve body (2) central through bore by valve rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448207.6U CN203404438U (en) | 2013-07-25 | 2013-07-25 | Coring inner cylinder vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448207.6U CN203404438U (en) | 2013-07-25 | 2013-07-25 | Coring inner cylinder vent valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404438U true CN203404438U (en) | 2014-01-22 |
Family
ID=49940375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320448207.6U Expired - Fee Related CN203404438U (en) | 2013-07-25 | 2013-07-25 | Coring inner cylinder vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
-
2013
- 2013-07-25 CN CN201320448207.6U patent/CN203404438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
| CN114278321B (en) * | 2021-12-31 | 2023-08-22 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembly process |
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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: 20140122 Termination date: 20150725 |
|
| EXPY | Termination of patent right or utility model |