CN203499624U - Oil pipeline pressure relief blowout preventer - Google Patents
Oil pipeline pressure relief blowout preventer Download PDFInfo
- Publication number
- CN203499624U CN203499624U CN201320642056.8U CN201320642056U CN203499624U CN 203499624 U CN203499624 U CN 203499624U CN 201320642056 U CN201320642056 U CN 201320642056U CN 203499624 U CN203499624 U CN 203499624U
- Authority
- CN
- China
- Prior art keywords
- plug
- oil pipeline
- coupling
- blowout preventer
- box cupling
- 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
Provided is an oil pipeline pressure relief blowout preventer. A screwed plug is connected with an upper thread of a coupling, the lower portion of the coupling is connected with the upper portion of a short section, and the lower portion of the short section is welded to a hole opening portion of an oil pipeline. The upper portion of the screwed plug is an outer hexahedron, a notch is formed in one side of an opening clamping sleeve, the width of the notch is equal to the outer diameter of the short section, the opening clamping sleeve is clamped into the short section from the side direction, and the opening clamping sleeve is blocked by the coupling and can not move upwards. A connecting tube is arranged outside the coupling in a sleeved mode, the lower portion of the connecting tube is in threaded connection with the opening clamping sleeve, an oil drain opening is formed in the connecting tube, an external thread of a detaching sleeve is screwed with an internal thread on the upper portion of the connecting tube, an inner hexagonal groove in the lower portion of the detaching sleeve is arranged outside the outer hexahedron on the upper portion of the screwed plug in a sleeved mode, the detaching sleeve is rotated so that the screwed plug can be detached, the screwed plug can not fly away at a high speed due to high pressure, and oil liquid in the oil pipeline can be recovered through the oil drain opening. The oil pipeline pressure relief blowout preventer is safe and reliable in screwed plug detaching, personnel injury accidents can not happen, and the oil pipeline pressure relief blowout preventer can be used on a well liquid outlet where threads are not arranged on the upper portion of the coupling.
Description
Technical field:
The utility model relates to the device on oilfield oil pipeline, is a kind of oil pipeline decompression blowout preventer.
Background technology:
On oil well petroleum pipeline, be provided with the outlet of well liquid, when bleeding off pressure during for the treatment of petroleum pipeline or cleaning pipeline, inwardly look for pressure, pipeline purging, do not bleed off pressure, by plug, stopped up during not pipeline purging, when needs are during in pipeline, plug be disassembled, owing to there being pressure in petroleum pipeline, when dismounting plug, high pressure easily causes personal injury, fluid in petroleum pipeline also can be injected in ground and cause crude oil loss, and causes environment pollution, thereby produces heavy economic losses.Chinese patent: 201020134794.8 < < oil pipeline decompression blowout preventer > >, dismounting plug safety, the fluid of emitting can reclaim, but its box cupling upper end need to process external screw thread one, can not implement installing the aboveground of box cupling.
Summary of the invention:
The purpose of this utility model is a kind of oil pipeline decompression blowout preventer of design, dismounting plug safety, and the fluid of emitting can reclaim, and can the aboveground enforcement of box cupling be installed.
The purpose of this utility model is achieved in that and comprises dismounting cover, plug, connecting cylinder, box cupling, pipe nipple, opening cutting ferrule, petroleum pipeline, plug is threaded with the top of box cupling, the bottom of box cupling is connected with the top of pipe nipple, the bottom of pipe nipple is welded on the tapping of petroleum pipeline, the top of plug is outer hexahedron, one side of opening cutting ferrule has breach, the width of described breach equals the external diameter of pipe nipple, opening cutting ferrule snaps in pipe nipple from side direction, opening cutting ferrule is blocked by box cupling the play that can not make progress, connecting cylinder is enclosed within outside box cupling, the bottom of connecting cylinder is connected with open card external threading, on connecting cylinder, have fuel outlet, the external screw thread of dismounting cover and the internal thread on connecting cylinder top screw, interior six square grooves of dismounting cover bottom entangle outside the outer hexahedron on plug top.
The beneficial effects of the utility model are: rotation dismounting cover can be dismantled plug, and plug can be because pressure flies out at a high speed, and the fluid in petroleum pipeline can reclaim through fuel outlet,
The utility model dismounting plug is safe and reliable, personal injury accident can not occur, and can not have in threaded well liquid outlet and use on box cupling top, has significant economic benefit.
Accompanying drawing explanation:
Accompanying drawing 1 is the assembling drawing of the utility model embodiment.
Accompanying drawing 2 is the profiles after cutting open from A-A in accompanying drawing 1.
Accompanying drawing 3 is the profiles after cutting open from B-B in accompanying drawing 1.
The specific embodiment:
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As seen from the figure, embodiment of the present utility model comprises dismounting cover 1, plug 2, connecting cylinder 4, box cupling 5, pipe nipple 6, opening cutting ferrule 7, petroleum pipeline 8, plug 2 is threaded with the top of box cupling 5, the bottom of box cupling 5 is connected with the top of pipe nipple 6, the bottom of pipe nipple 6 is welded on the tapping of petroleum pipeline 8, plug 2, box cupling 5, pipe nipple 6 forms the well liquid outlet on petroleum pipeline, the top of plug 2 is outer hexahedron, one side of opening cutting ferrule 7 has breach 9, the width of described breach 9 equals the external diameter of pipe nipple 6, opening cutting ferrule 7 snaps in pipe nipple 6 from side direction, opening cutting ferrule 7 is blocked by box cupling 5 play that can not make progress, connecting cylinder 4 is enclosed within outside box cupling 5, the bottom of connecting cylinder 4 is threaded with opening cutting ferrule 7, on connecting cylinder 4, have fuel outlet 3, the external screw thread of dismounting cover 1 and the internal thread on connecting cylinder 4 tops screw, interior six square grooves of dismounting cover 1 bottom entangle outside the outer hexahedron on plug 2 tops.
While not processing petroleum pipeline 8, drawing together dismounting cover 1, connecting cylinder 4, opening cutting ferrule 7 does not install, while needing place's amount petroleum pipeline 8, by installing as shown in the figure, rotation dismounting cover 1, dismounting cover 1 drives plug 2 rotations, and plug 2 is disassembled from box cupling 5, plug 2 can not fly out, and the fluid in petroleum pipeline 8 flows out and is recovered from fuel outlet 3.
Claims (1)
1. an oil pipeline decompression blowout preventer, comprise dismounting cover (1), plug (2), connecting cylinder (4), box cupling (5), pipe nipple (6), opening cutting ferrule (7), petroleum pipeline (8), plug (2) is threaded with the top of box cupling (5), the bottom of box cupling (5) is connected with the top of pipe nipple (6), the bottom of pipe nipple (6) is welded on the tapping of petroleum pipeline (8), the top of plug (2) is outer hexahedron, it is characterized in that: a side of opening cutting ferrule (7) has breach (9), the width of described breach (9) equals the external diameter of pipe nipple (6), opening cutting ferrule (7) snaps in pipe nipple (6) from side direction, opening cutting ferrule (7) is blocked by box cupling (5) play that can not make progress, connecting cylinder (4) is enclosed within outside box cupling (5), the bottom of connecting cylinder (4) is threaded with opening cutting ferrule (7), on connecting cylinder (4), have fuel outlet (3), the dismounting cover external screw thread of (1) and the internal thread on connecting cylinder (4) top screw, interior six square grooves of dismounting cover (1) bottom entangle outside the outer hexahedron on plug (2) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642056.8U CN203499624U (en) | 2013-10-14 | 2013-10-14 | Oil pipeline pressure relief blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642056.8U CN203499624U (en) | 2013-10-14 | 2013-10-14 | Oil pipeline pressure relief blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499624U true CN203499624U (en) | 2014-03-26 |
Family
ID=50330613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642056.8U Expired - Fee Related CN203499624U (en) | 2013-10-14 | 2013-10-14 | Oil pipeline pressure relief blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499624U (en) |
-
2013
- 2013-10-14 CN CN201320642056.8U patent/CN203499624U/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: 20140326 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |