CN203321407U - Christmas tree cap - Google Patents
Christmas tree cap Download PDFInfo
- Publication number
- CN203321407U CN203321407U CN2013202910110U CN201320291011U CN203321407U CN 203321407 U CN203321407 U CN 203321407U CN 2013202910110 U CN2013202910110 U CN 2013202910110U CN 201320291011 U CN201320291011 U CN 201320291011U CN 203321407 U CN203321407 U CN 203321407U
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- main body
- antiskid bar
- tree cap
- latch
- sleeve pipe
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Abstract
The utility model relates to the technical field of offshore oil and gas drilling, in particular to a Christmas tree cap which comprises a fixing base (3), a main body (2) and a sleeve (1). The sleeve (1) is arranged outside the main body (2) in a sleeved mode. The main body (2) is supported on the fixing base (3). The Christmas tree cap is characterized in that the lower end of the main body (2) is connected with the fixing base (3) through a first screw (4), a locking mechanism is arranged on the main body (2), and an anti-skid mechanism is arranged between the sleeve (1) and the main body (2). The Christmas tree cap has the advantages that the locking mechanism and an unlocking mechanism of the Christmas tree cap are designed ingeniously, locking and unlocking procedures are simple, the structure has rationality and practicability, the sealing effect is good, the purpose that the outer Christmas tree cap of an underwater Christmas tree is quickly disassembled and assembled is achieved, and certain economic benefits are created for an enterprise.
Description
Technical field
The utility model relates to offshore oil natural gas drilling and production technology field, particularly a kind of tree cap.
Background technology
The underwater vertical tree cap is connected tree cap and is reentered device by outside and forms, outside tree cap is installed on vertical production tree annulus bore and oil outlet top, counterbalance valve is equipped with on top, bottom connects inner tree cap upper end, inside pack into Sealing joint ring emptying aperture and oil outlet, send into interface channel be provided for the workover treatment instrument.
In the situation that normal produce hydrocarbons, utilize specific retaining mechanism, outside tree cap is locked in inner tree cap upper end profile, when workover treatment, utilize corresponding release mechanism, outside tree cap is carried out to release, will carry on it by the tree cap running tool, for sending into of workover tool provides passage.
Outside connect tree cap correctly, to install fast be that it is to the subsea production tree key that incoming interface, hydraulic coupler, vertical bore shield again; yet the retaining mechanism of outside tree cap is to guarantee that it installs correct key; China externally design aspect of tree cap retaining mechanism is lacking in experience; structure is single; locking effect is not ideal enough, haves much room for improvement.The outside quick-detachment that connects tree cap is conducive to shorten the cycle of workover treatment, improves the operating efficiency of workover treatment, thereby controls workover cost, reduces operating risk.The quick-detachment key of outside tree cap is the exquisiteness design of release mechanism, unlocking program simple and practical, and China is single to the design of tripper, lacks innovation, and unlocking program is comparatively complicated, is unfavorable for saving the activity duration, improves operating efficiency.
The utility model content
It is single that the purpose of this utility model is to solve in prior art the design to tripper, lacks innovation, and unlocking program is comparatively complicated, be unfavorable for saving the problem of activity duration, provide locking to conciliate the lock mechanism design exquisiteness, locking is simple with unlocking program, the tree cap of energy quickly dismantled.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of tree cap, comprise holder, main body, sleeve pipe, and its middle sleeve overcoat is on main body, body supports is on holder, the main body lower end is connected with holder by the first screw, on this main body, is provided with retaining mechanism, between sleeve pipe and main body, is provided with anti-slipping mechanism.Retaining mechanism can be realized the outside connection of quick locking tree cap and the relative position that reenters device, makes its docking firmly, and anti-slipping mechanism can stop sleeve pipe to slide, and energy and retaining mechanism formation interlock, can realize quick locking and release to tree cap.
Further technical scheme is that retaining mechanism comprises latch and locating part, is provided with low inside and high outside latch on main body through hole is installed, and latch is placed on this latch and installs in through hole, and locating part is arranged in main body, and latch is blocked in this locating part outer end.
Latch is slided outward with the meeting that affects of Action of Gravity Field, and the locating part of setting can stop that it skids off latch through hole is installed, and latch can slide in latch is installed through hole, and the through hole outside is sleeve pipe, and the through hole inboard is to reenter device.
Further technical scheme is that the latch lower end is provided with sliding recess, and the locating part outer end is stretched in sliding recess, thereby latch is blocked.
Locating part is the sliding recess arranged by stretching into the latch lower end, the latch blocked.Groove has certain-length, can slide for latch.
Further technical scheme is that locating part is screw.
Further technical scheme is that anti-slipping mechanism comprises antiskid bar body, antiskid bar, antiskid bar pressure cap, antiskid bar pin-and-hole, shear pin and shearing key seat; Wherein the antiskid bar lower end is fixed on main body, sleeve pipe is stretched out in upper end, at this antiskid bar extension overcoat, the antiskid bar body is arranged, the antiskid bar pressure cap is threaded on anti-skidding club head, this antiskid bar pressure cap and antiskid bar body are threaded, antiskid bar body lower surface is fixedly connected with sleeve pipe, be provided with the shearing key seat on the antiskid bar body, be provided with shear pin in this shearing key seat, be provided with the antiskid bar pin-and-hole on antiskid bar, when sleeve pipe glides, shear pin stretches into the antiskid bar pin-and-hole under the effect of spring, thereby prevents that sleeve pipe from continuing to slide.
Can realize quick locking and release between sleeve pipe and main body, can effectively prevent that when locking sleeve pipe from sliding and coming off.
Further technical scheme is that body interior is provided with annulus bore and production hole, and place, described annulus bore aperture is provided with sealing device, and place, aperture, production hole is provided with sealing device.
Sealing device can improve the sealing effectiveness of this tree cap.
Further technical scheme is on main body, to be provided with and the supporting locking device of described sealing device, and described locking device is comprised of stopper ring and screw, and described stopper ring is fixed by screws on main body.
Stopper ring and screw energy lock sealing device, prevent that sealing device is in rotary moving, strengthens sealing effectiveness.
Compared with prior art, the beneficial effects of the utility model are: the lock mechanism design exquisiteness is conciliate in the locking of tree cap, locking is simple with unlocking program, structure has reasonability and practicality, good sealing effect, reached the purpose of the outside tree cap quickly dismantled of subsea production tree, for enterprise has created certain economic benefit.
The accompanying drawing explanation
The locking that Fig. 1 is an embodiment of the utility model and released state schematic diagram;
The partial enlarged drawing that Fig. 2 is A in Fig. 1;
The partial enlarged drawing that Fig. 3 is B in Fig. 1;
The top view that Fig. 4 is an embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
The utility model embodiment as shown in Figure 1 to Figure 3 is known, a kind of tree cap, comprise holder 3, main body 2, sleeve pipe 1, outside its middle sleeve 1, be enclosed within on main body 2, main body 2 is supported on holder 3, main body 2 lower ends are connected with holder 3 by the first screw 4, on this main body 2, are provided with retaining mechanism, between sleeve pipe 1 and main body 2, are provided with anti-slipping mechanism.Retaining mechanism can be realized the outside connection of quick locking tree cap and the relative position that reenters device, makes its docking firmly, and anti-slipping mechanism can stop sleeve pipe to slide, and energy and retaining mechanism formation interlock, can realize quick locking and release to tree cap.Retaining mechanism comprises latch 6 and locating part 5, is provided with low inside and high outside latch on main body 2 through hole is installed, and latch 6 is placed on this latch and installs in through hole, and locating part 5 is arranged in main body 2, and latch 6 is blocked in these locating part 5 outer ends.Latch is slided outward with the meeting that affects of Action of Gravity Field, and the locating part of setting can stop that it skids off latch through hole is installed, and latch can slide in latch is installed through hole, and the through hole outside is sleeve pipe, and the through hole inboard is to reenter device.Latch 6 lower ends are provided with sliding recess, and locating part 5 outer ends are stretched in sliding recess, thereby latch 6 is blocked.Locating part is the latch that the sliding recess by stretching into the setting of latch lower end blocks.Groove has certain-length, can slide for latch.Locating part 5 is screws.Anti-slipping mechanism comprises antiskid bar body 10, antiskid bar 8, antiskid bar pressure cap 11, antiskid bar pin-and-hole 9, shear pin 12 and shears key seat 13, wherein antiskid bar 8 lower ends are fixed on main body 2, sleeve pipe 1 is stretched out in upper end, at these antiskid bar 8 extension overcoats, antiskid bar body 10 is arranged, antiskid bar pressure cap 11 is threaded on antiskid bar 8 bar heads, this antiskid bar pressure cap 11 and antiskid bar body 10 are threaded, antiskid bar body 10 lower surfaces are fixedly connected with sleeve pipe 1, be provided with on antiskid bar body 10 and shear key seat 13, be provided with shear pin 12 in this shearing key seat 13, be provided with antiskid bar pin-and-hole 9 on antiskid bar 8, when sleeve pipe 1 glides, shear pin 12 stretches into antiskid bar pin-and-hole 9 under the effect of spring, thereby prevent that sleeve pipe 1 from continuing to slide.Can realize quick locking and release between sleeve pipe and main body, can effectively prevent that when locking sleeve pipe from sliding.
The upper surface of holder has screw hole, utilizes the first screw 4 to connect body.Tree cap is cylinder type, and center, body upper end has the counterbalance valve installing hole, and counterbalance valve 7 is housed, the tree cap retaining mechanism adopts the mechanical remote control operation, also has position indicator, to show the locking state position, before tree cap removes, discharge the pressure that reenters device by counterbalance valve.Holder is arranged on to the upper end profile that reenters device, utilizes the retaining mechanism of this tree cap and anti-slipping mechanism that sleeve pipe 1 is arranged on above main body, the inner upper end profile that connects production tree of locking simultaneously.Cut off shear pin during release and get final product release, sleeve pipe 1 can be taken out from main body 2, thereby take out the whole outside tree cap that connects.
The project organization of locking of the present utility model and release mechanism is compared to the prior art: design more simply, more practical, optimized the mechanical remote control operation, its operating principle is to utilize the deadweight of sleeve pipe 1 to press down the latch 6 be arranged in advance on body 2 peripheries, locking reenters device 14 top hub formula profiles, when outside connects tree cap in locking state, the shear pin 12 be arranged in advance in sleeve pipe 1 position, upper surface anti-slipping mechanism is ejected by spring, and sleeve pipe 1 is fixed.
Open counterbalance valve 2, discharge on the pressure of bottom and watch out for slide bar 8, cut off shear pin 12 and can complete the release to outside tree cap, above carry sleeve pipe 1, sleeve pipe 1 inwall profile and latch 6 break away from, and latch 6 is lost radial compression power.Carry to sleeve pipe 1 extreme position on sleeve pipe 1 continues, thereby realize tree cap and reenter separating of device, finally completed the dismounting of outside connection tree cap, thereby reached the requirement of rapid-assembling/disassembling.
Fig. 1 left side is the schematic diagram of released state, and right side is the schematic diagram of locking state.Retaining mechanism in Fig. 1 under the released state of left side is not shown, during released state, sleeve pipe is not close to latch installation through hole, latch is without the pressure from the outside, slide to down the fixing extreme lower position of locating part 5, the latch that the latch inboard does not surpass on main body is installed through hole, in figure, the device 14 that reenters of dotted portion is not stopped pin 6 and blocks, and can move.
The top view that Fig. 4 is an embodiment of the utility model.Fig. 4 shows main body 2 inside and is provided with annulus bore 15 and production hole 16, and described annulus bore 15 places, aperture are provided with the sealing device (not shown), and 16 places, aperture, production hole are provided with the sealing device (not shown).The aperture mounting sealing device can improve the sealing effectiveness of this tree cap.In order to obtain on better sealing effectiveness main body, be provided with and the supporting locking device of described sealing device, described locking device is comprised of stopper ring 18 and screw 17, and described stopper ring 18 is fixed on main body by screw 17.Stopper ring can be open washer, and the annulus bore 15 shown in figure has 2 sleeve locking apparatus, and there are 4 sleeve locking apparatus in production hole 16.Stopper ring and screw energy lock sealing device, prevent that sealing device is in rotary moving, strengthens sealing effectiveness.Stopper ring is controlled degree of tightness by screw, thereby changes the stopper ring opening direction, reaches the purpose of locking, release sealing device.When being installed, installs according to the following steps by the sealing device in production hole:
1, unclamp screw 17, stopper ring 18 openings are turned to production hole 16, make stopper ring 18 coverages outside 16 diameter ranges of production hole, tighten screw 17, other 3 sleeve locking apparatus are operated equally;
2, sealing device is put into to 16 apertures, production hole;
3, unclamp screw 17, stopper ring 18 openings are left to production hole 16, make stopper ring 18 coverages in 16 diameter ranges of production hole, tighten screw 17; Other 3 sleeve locking apparatus are operated equally.
Thereby the pinning sealing device, complete the installation of production hole sealing device.The sealing device of erection loop emptying aperture is same reason.
Claims (7)
1. a tree cap, comprise holder (3), main body (2), sleeve pipe (1), wherein said sleeve pipe (1) is outer to be enclosed within on main body (2), described main body (2) is supported on described holder (3), it is characterized in that: described main body (2) lower end is connected with holder (3) by the first screw (4), be provided with retaining mechanism on this main body (2), between described sleeve pipe (1) and main body (2), be provided with anti-slipping mechanism.
2. tree cap according to claim 1, it is characterized in that: described retaining mechanism comprises latch (6) and locating part (5), be provided with low inside and high outside latch on described main body (2) through hole is installed, described latch (6) is placed on this latch and installs in through hole, described locating part (5) is arranged in main body (2), and described latch (6) is blocked in this locating part (5) outer end.
3. tree cap according to claim 2, it is characterized in that: described latch (6) lower end is provided with sliding recess, and described locating part (5) outer end is stretched in sliding recess, thereby described latch (6) is blocked.
4. according to the described tree cap of claim 2 or 3, it is characterized in that: described locating part (5) is screw.
5. tree cap according to claim 1 is characterized in that: described anti-slipping mechanism comprises antiskid bar body (10), antiskid bar (8), antiskid bar pressure cap (11), antiskid bar pin-and-hole (9), shear pin (12) and shears key seat (13), wherein said antiskid bar (8) lower end is fixed on described main body (2), described sleeve pipe (1) is stretched out in upper end, at this antiskid bar (8) extension overcoat, antiskid bar body (10) is arranged, described antiskid bar pressure cap (11) is threaded on antiskid bar (8) bar head, this antiskid bar pressure cap (11) and antiskid bar body (10) are threaded, described antiskid bar body (10) lower surface is fixedly connected with described sleeve pipe (1), be provided with described shearing key seat (13) on described antiskid bar body (10), be provided with described shear pin (12) in this shearing key seat (13), be provided with described antiskid bar pin-and-hole (9) on described antiskid bar (8), when described sleeve pipe (1) glides, described shear pin (12) stretches into described antiskid bar pin-and-hole (9) under the effect of spring, thereby prevent that sleeve pipe (1) from continuing to slide.
6. tree cap according to claim 1, it is characterized in that: described main body (2) inside is provided with annulus bore (15) and production hole (16), place, described annulus bore (15) aperture is provided with sealing device, and place, aperture, described production hole (16) is provided with sealing device.
7. tree cap according to claim 6, it is characterized in that: on described main body (2), be provided with and the supporting locking device of described sealing device, described locking device is comprised of stopper ring (18) and screw (17), and described stopper ring (18) is fixed on main body (2) by screw (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202910110U CN203321407U (en) | 2013-05-24 | 2013-05-24 | Christmas tree cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202910110U CN203321407U (en) | 2013-05-24 | 2013-05-24 | Christmas tree cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321407U true CN203321407U (en) | 2013-12-04 |
Family
ID=49660770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202910110U Expired - Fee Related CN203321407U (en) | 2013-05-24 | 2013-05-24 | Christmas tree cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476775A (en) * | 2017-09-25 | 2017-12-15 | 中国海洋石油总公司 | One kind is aided in wellhead assembly and operating method under water |
| CN114198045A (en) * | 2021-12-03 | 2022-03-18 | 中海石油(中国)有限公司 | Inner tree cap device for shallow underwater Christmas tree and using method thereof |
-
2013
- 2013-05-24 CN CN2013202910110U patent/CN203321407U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476775A (en) * | 2017-09-25 | 2017-12-15 | 中国海洋石油总公司 | One kind is aided in wellhead assembly and operating method under water |
| CN114198045A (en) * | 2021-12-03 | 2022-03-18 | 中海石油(中国)有限公司 | Inner tree cap device for shallow underwater Christmas tree and using method thereof |
| CN114198045B (en) * | 2021-12-03 | 2023-10-31 | 中海石油(中国)有限公司 | Inner tree cap device for shallow water underwater Christmas tree and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180503 Address after: No. 69, Mount Huangshan Avenue, Yubei District, Chongqing, Chongqing Patentee after: Chongqing Qianwei Technology Group Co., Ltd. Address before: No. 69, Mount Huangshan Avenue, Yubei District, Chongqing, Chongqing Patentee before: CHONGQING QIANWEI OFFSHORE PETROLEUM ENGINEERING & EQUIPMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20200524 |