CN202596647U - Sleeve-pumping two-stage pneumatic blowout-preventing box - Google Patents
Sleeve-pumping two-stage pneumatic blowout-preventing box Download PDFInfo
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- CN202596647U CN202596647U CN 201220287782 CN201220287782U CN202596647U CN 202596647 U CN202596647 U CN 202596647U CN 201220287782 CN201220287782 CN 201220287782 CN 201220287782 U CN201220287782 U CN 201220287782U CN 202596647 U CN202596647 U CN 202596647U
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- urceolus
- cylinder
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- packing
- blowout
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Abstract
A sleeve-pumping two-stage pneumatic blowout-preventing box utilizes two sealing fillers reverse in conicity direction and adopts compressed air to exert pressure onto the sealing fillers to ensure the sealing of the sealing fillers. The upper end and the lower end of an outer barrel are connected with an upper conical barrel and a lower conical barrel through threads. The sealing fillers are arranged in the conical barrels, two ends of the outer barrel are respectively provided with annular cylinders, and a communicating hole is arranged between the two cylinders. A wall of the outer barrel is provided with an air inlet, and cylinder plungers are arranged in the cylinders. An inner wall of the outer barrel is provided with a spring pressing cap. A return spring is arranged between the spring pressing cap and the cylinder plungers. When the sleeve-pumping two-stage pneumatic blowout-preventing box works, the sealing fillers reverse in the conicity directions play a sealing role simultaneously, thereby improving the sealing performance of the blowout-preventing box. The blowout-preventing box is reasonable in structure, can guide crude oil and prevent safety accidents. In addition, the blowout-preventing box adopts two-way sealing fillers to ensure the sealing effect and has the advantages of being simple in installation and operation and the like.
Description
Technical field
The utility model relates to a kind of petroleum technology field, the instrument that uses in the oil producing operation.It is a kind of blowout prevention box that extraction oil the time is installed in the well head cannula tip that overlaps.
Background technology
The oil well cover technology of taking out is to recover the oil the later stage in the oil field, when oil well output can not satisfy pumping production, and a kind of discontinuity oil pumping method that is adopted.Main way is: utilize wire rope suspension swab, swab is sent in the sleeve pipe, arrive below the oil reservoir, carry swab on slowly, the crude oil in the sleeve pipe is promoted to ground.For the crude oil water conservancy diversion that will rise to ground to oil sump, in cannula tip the blowout prevention box is installed.General blowout prevention box is in the plug-in mounting safety joint of water conservancy diversion four-way junction of casing top.Safety joint is the flange shape.There is safety pin to be connected between safety joint and the four-way junction of casing upper flange.The effect of safety pin: when running into when lifting power on excessive, safety pin is at first broken, and protects other instrument not to be damaged.In addition, adopt between awl tube and the safety joint and be threaded.Awl tube centre bore is up big and down small.In the awl tube sealed packing is arranged, sealed packing is to process cone by elastomeric material.Its conical surface cooperates with the awl tube, and centre bore can pass wire rope.The four-way junction of casing and the safety pin structure design of existing blowout prevention box are more reasonable, have played the effect of water conservancy diversion crude oil with the prevention security incident.But existing blowout prevention box hermetically-sealed construction is also not really desirable.Because awl tube is suitable for reading big, following young, sealed packing packs tightly wire rope, when wire rope is carried on not, seal solid and reliablely, and still, cover is taken out operation and begun, on when carrying wire rope, the sealed packing while is taken up by wire rope, influences sealing effectiveness.
Summary of the invention
The purpose of the utility model is: unreasonable, simple in structure in order to overcome existing blowout prevention box awl tube hermetically-sealed construction, on influence sealing effectiveness when carrying wire rope.The utility model provides a kind of cover to take out the pneumatic blowout prevention box of twin-stage, and this blowout prevention box can not only the water conservancy diversion cover draw up the crude oil that comes, the prevention security incident, and can when carrying wire rope, guarantee the packing_seal effect last.
The utility model solves the problem that existing blowout prevention box exists, and the technical scheme that is adopted is: utilize two sealed packings that taper direction is opposite, and to adopt compressed air be that sealed packing is exerted pressure, guarantee packing_seal.
A kind of cover is taken out the pneumatic blowout prevention box of twin-stage, is by the plug-in mounting safety joint of water conservancy diversion four-way junction of casing top, has safety pin to be connected between safety joint and the four-way junction of casing upper flange; It is characterized in that the urceolus lower end is with the slower conical tube top that is threaded, the urceolus upper end is with the upper conical-tube bottom that is threaded; Slower conical tube is threaded with safety joint, and the lower seal packing is arranged in the slower conical tube, and last sealed packing is arranged in the upper conical-tube; The hole that last sealed packing and lower seal packing center have wire rope to pass through, lower seal packing smaller diameter end is downward, and last sealed packing smaller diameter end is upwards; The hole that the urceolus center has wire rope to pass through, urceolus two ends have a circular cylinder respectively, between two cylinders intercommunicating pore are arranged; There is air inlet port to communicate with two cylinder bottom on the outer tube wall, the cylinder plunger is arranged in the cylinder, the fixing spring pressure cap of screw thread is arranged on the outer tube inner wall through intercommunicating pore; The spring pressure cap is the annulus post, and spring pressure cap cylindrical has the screw thread that cooperates with urceolus, has a back-moving spring between spring pressure cap and the cylinder plunger at least.
In order to improve the sealing performance between cylinder plunger and the cylinder, improve the thrust of cylinder plunger, plunger inner seal ring and plunger exterior seal ring are arranged between the gentle cylinder plug of cylinder.
Described back-moving spring can adopt spiral compression spring.
Begin the cover take out crude oil before, four-way junction of casing and well mouth of oil well are fixed.Upper and lower sealed packing of steel wire penetrating and urceolus centre bore, casing swab of bottom suspension.Cover is taken out beginning, and at first the compressed air with 0.6-0.8MPa gets into cylinder through air inlet port, promotes the cylinder plunger, compresses sealed packing, last dike wire rope.
The beneficial effect of the utility model is, two sealed packings that taper direction is opposite are set in urceolus, and two opposite sealed packings of taper direction seal simultaneously under the pressure of cylinder plunger, improves the sealing of blowout prevention box.This blowout prevention box is rational in infrastructure, can not only the water conservancy diversion cover draw up the crude oil that comes, and can prevent security incident, and, adopts the two way seal packing to guarantee sealing function really, and have installation, simple operation and other advantages when carrying wire rope last.
Description of drawings
Fig. 1 is the half section structural representation of the utility model.(the thin indicated direction of arrow is the direction that compressed air gets among the figure.The route that the thick indicated direction of arrow is crossed by the crude stream of extraction)
Among the figure: sealed packing, 14 upper conical-tubes on 1 four-way junction of casing, 2 safety pins, 3 safety joints, 4 slower conical tubes, 5 lower seal packings, 6 urceolus, 7 plunger inner seal rings, 8 plunger exterior seal rings, 9 air inlet ports, 10 cylinder plungers, 11 back-moving springs, the 12 spring pressure caps, 13.
The specific embodiment
As shown in Figure 1, in the 1 top plug-in mounting safety joint 3 of water conservancy diversion four-way junction of casing.Person in charge's internal diameter of four-way junction of casing 1 is 140 millimeters, and length is 400 millimeters, and flange is arranged at top.Safety joint 3 is the flange shape, and ledge inserts to be responsible for, and two flanges are relative.There are two safety pins 2 to be connected between safety joint 3 and four-way junction of casing 1 upper flange.Two safety pins 2 can bear 1 ton pulling force altogether, and it is disconnected to surpass 1 ton hour safety pin 2, and the protection miscellaneous equipment is not suffered a loss.Urceolus 6 lower ends are with the slower conical tube 4 that is threaded, the urceolus 6 upper ends upper conical-tube 14 that is threaded.Slower conical tube 4 is threaded with safety joint 3.The tapering of upper conical-tube 14, slower conical tube 4 and last sealed packing 13, lower seal packing 5 is 1 to 5.A lower seal packing 5 is housed in the slower conical tube 4; Be equipped with one in the upper conical-tube 14 and go up sealed packing 13.Last sealed packing 13 is to be pressed to annotate by elastomeric material to form with lower seal packing 5, and length is 170 millimeters, and the bore dia that the core wire rope passes through is 15 millimeters.Lower seal packing 5 smaller diameter end are downward, and last sealed packing 13 smaller diameter end upwards.The hole that urceolus 6 centers have wire rope to pass through, the diameter in hole are 25 millimeters.Urceolus 6 two ends have a circular cylinder respectively, between two circular cylinders intercommunicating pore are arranged.There is air inlet port 9 to communicate with two cylinder bottom on urceolus 6 walls through intercommunicating pore.Cylinder plunger 10 is arranged in the cylinder.Adopt screw fixation method on urceolus 6 inwalls, spring pressure cap 12 is fixed between urceolus 6 and the cylinder plunger 10.Spring pressure cap 12 is the annulus post, and cylindrical has the screw thread that cooperates with urceolus 6, and thickness is 12 millimeters.A helical compression back-moving spring 11 is respectively arranged between spring pressure cap 12 and the cylinder plunger 10.Between the gentle cylinder plug 10 of cylinder, be provided with plunger inner seal ring 7, plunger exterior seal ring 8.When carrying wire rope on the needs, operator is opened valve, and compressed air gets into cylinders through air inlet port 9, promotes cylinder plunger 10 and compresses sealed packing 13 and lower seal packing 5, and last sealed packing 13 and lower seal packing 5 are held wire rope tightly, play sealing function.When transferring wire rope; Close valve; Back-moving spring 11 promotes cylinder plunger 10 and gets back to the home position, and last sealed packing 13 is not stressed with lower seal packing 5, and last sealed packing 13 unclamps wire rope with lower seal packing 5; Reduce the friction of wire rope and last sealed packing 13 and lower seal packing 5, the application life of sealed packing 13 and lower seal packing 5 in the raising.
Claims (3)
1. a cover is taken out the pneumatic blowout prevention box of twin-stage, is by water conservancy diversion four-way junction of casing (1) top plug-in mounting safety joint (3), has safety pin (2) to be connected between safety joint (3) and four-way junction of casing (1) upper flange; It is characterized in that urceolus (6) lower end is with the slower conical tube that is threaded (4) top, urceolus (6) upper end is with the upper conical-tube that is threaded (14) bottom; Slower conical tube (4) is threaded with safety joint (3), and lower seal packing (5) is arranged in the slower conical tube (4), and last sealed packing (13) is arranged in the upper conical-tube (14); The hole that last sealed packing (13) and lower seal packing (5) center have wire rope to pass through, lower seal packing (5) smaller diameter end is downward, and last sealed packing (13) smaller diameter end is upwards; The hole that urceolus (6) center has wire rope to pass through, urceolus (6) two ends have a circular cylinder respectively, between two cylinders intercommunicating pore are arranged; There is air inlet port (9) to communicate with two cylinder bottom on urceolus (6) wall through intercommunicating pore; Cylinder plunger (10) is arranged in the cylinder, the fixing spring pressure cap (12) of screw thread is arranged on urceolus (6) inwall, spring pressure cap (12) is the annulus post; Spring pressure cap (12) cylindrical has the screw thread that cooperates with urceolus (6), has a back-moving spring (11) at least between spring pressure cap (12) and the cylinder plunger (10).
2. a kind of cover according to claim 1 is taken out the pneumatic blowout prevention box of twin-stage, it is characterized in that, between the gentle cylinder plug of cylinder (10), is provided with plunger inner seal ring (7) and plunger exterior seal ring (8).
3. a kind of cover according to claim 1 is taken out the pneumatic blowout prevention box of twin-stage, it is characterized in that, described back-moving spring (11) can adopt spiral compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287782 CN202596647U (en) | 2012-06-19 | 2012-06-19 | Sleeve-pumping two-stage pneumatic blowout-preventing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287782 CN202596647U (en) | 2012-06-19 | 2012-06-19 | Sleeve-pumping two-stage pneumatic blowout-preventing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596647U true CN202596647U (en) | 2012-12-12 |
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ID=47314194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220287782 Expired - Fee Related CN202596647U (en) | 2012-06-19 | 2012-06-19 | Sleeve-pumping two-stage pneumatic blowout-preventing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663917A (en) * | 2020-07-22 | 2020-09-15 | 吕学民 | Underground dynamic sealing device of ultra-long stroke oil pumping unit |
| CN113404466A (en) * | 2021-05-12 | 2021-09-17 | 陕西瑞祺辰龙石油科技有限公司 | Automatic sealing device for oil pumping sucker |
-
2012
- 2012-06-19 CN CN 201220287782 patent/CN202596647U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663917A (en) * | 2020-07-22 | 2020-09-15 | 吕学民 | Underground dynamic sealing device of ultra-long stroke oil pumping unit |
| CN111663917B (en) * | 2020-07-22 | 2023-10-03 | 梅河口市弘业无缝钢管有限公司 | Underground dynamic sealing device of ultra-long stroke pumping unit |
| CN113404466A (en) * | 2021-05-12 | 2021-09-17 | 陕西瑞祺辰龙石油科技有限公司 | Automatic sealing device for oil pumping sucker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130619 |