CN216342010U - Single-arm hydraulic eccentric device - Google Patents
Single-arm hydraulic eccentric device Download PDFInfo
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- CN216342010U CN216342010U CN202122742936.XU CN202122742936U CN216342010U CN 216342010 U CN216342010 U CN 216342010U CN 202122742936 U CN202122742936 U CN 202122742936U CN 216342010 U CN216342010 U CN 216342010U
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- nozzle
- arm hydraulic
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- 238000007789 sealing Methods 0.000 claims description 27
- 241000251468 Actinopterygii Species 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a single-arm hydraulic eccentric device which comprises an upper connector (1), a main body (2), a nozzle (3), a nozzle seat (4), a piston (5), a spring (6), a righting blade (7) and a lower connector (8), wherein the piston (5) is arranged in the main body (2), the outer wall of an outer flange (51) at the upper end part of the piston (5) is in sliding seal fit with the inner wall of the main body (2), the spring (6) is sleeved on the piston (5), the middle lower part of the nozzle seat (4) is arranged in a central hole of the piston (5), the nozzle (3) is arranged in the upper end of the central hole of the nozzle seat (4), a cutter groove (21) is arranged on the side wall of the main body (2), the righting blade (7) is positioned in the cutter groove (21), and the upper end of the righting blade (7) is hinged to the main body (2). It can make the formula of can backing off fishing spear introduce eccentric fish hole more easily, can improve the speed of salvage work, is favorable to shortening the activity duration, also is favorable to going on of work next step.
Description
Technical Field
The utility model relates to a petroleum tool, in particular to a single-arm hydraulic eccentric.
Background
Although the fishing effect of the returnable fishing spear used by the oil field department is good, the returnable fishing spear is not easy to introduce an eccentric fish inner hole when the fishing spear is put into the well, the efficiency of fishing work is influenced, the shortening of the operation time is not facilitated, and the continuation of the next work is not facilitated.
Disclosure of Invention
The utility model aims to provide a single-arm hydraulic eccentric device which can enable a retractable fishing spear to be more easily led into an eccentric fish inner hole, can improve the fishing speed, is beneficial to shortening the operation time and is also beneficial to the continuation of the next operation.
The technical solution of the utility model is as follows: the nozzle comprises an upper joint, a main body, a nozzle holder, a piston, a spring, a righting blade and a lower joint, wherein the upper end of the main body is axially connected with the lower end of the upper joint through threads, the lower end of the main body is axially connected with the upper end of the lower joint through threads, the piston is arranged in the main body below the upper joint, the outer wall of an outer flange at the upper end part of the piston is axially matched with the inner wall of the main body in a sliding and sealing way, the spring is sleeved in the main body, the upper end of the spring is matched with the lower end surface of the outer flange of the piston, the lower end of the spring is matched with the inner end surface of the main body facing upwards, the nozzle holder is arranged in the upper joint and the main body, the middle lower part of the nozzle holder is arranged in a central hole of the piston, the nozzle is arranged in the upper end of a central hole of the nozzle holder, a cutter slot is arranged on the side wall of the main body corresponding to the lower end part of the piston, the righting blade is arranged in the cutter slot, and the upper end of the righting blade is hinged on the main body, one side of the righting blade facing the interior of the main body is matched with the lower end part of the piston.
The utility model has the technical effects that: it can make the formula of can backing off fishing spear introduce eccentric fish hole more easily, can improve the speed of salvage work, is favorable to shortening the activity duration, also is favorable to going on of work next step. The single arm is pushed out by hydraulic pressure in a large-hole diameter (95/8' sleeve) to create eccentricity, so that the retractable fishing spear can be more easily introduced into an eccentric inner hole of a fallen fish, the fallen fish can be smoothly fished, and the working efficiency of the retractable fishing spear can be improved.
Drawings
FIG. 1 is a cross-sectional structural view of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, it comprises an upper joint 1, a main body 2, a nozzle 3, a nozzle holder 4, a piston 5, a spring 6, a righting wing knife 7 and a lower joint 8, the upper end of the main body 2 is axially connected with the lower end of the upper joint 1 through screw threads, the lower end is axially connected with the upper end of the lower joint 8 through screw threads, the piston 5 is arranged in the main body 2 below the upper joint 1, the outer wall of an outer flange 51 at the upper end of the piston 5 is axially matched with the inner wall of the main body 2 in a sliding and sealing way, the spring 6 is arranged on the main body 2 and sleeved on the piston 5, the upper end of the spring 6 is matched with the lower end surface of the outer flange 51 of the piston, the lower end is matched with the inner end surface of the main body 2 facing upwards, the nozzle holder 4 is arranged in the upper joint 1 and the main body 2, the middle lower part of the nozzle holder 4 is arranged in the central hole of the piston 5, the nozzle 3 is arranged in the upper end of the central hole of the nozzle holder 4, a knife slot 21 is arranged on the side wall of the main body 2 corresponding to the lower end of the piston 5, the righting blade 7 is positioned in the cutter groove 21, the upper end of the righting blade 7 is hinged to the main body 2, and one side, facing the inside of the main body 2, of the righting blade 7 is matched with the lower end of the piston 5.
The outer wall above the position where the upper joint 1 is connected with the main body 2 through threads is provided with a sealing ring groove, and a sealing ring 9 which is in sealing fit with the inner wall of the main body 2 is arranged in the sealing ring groove.
The inner hole of the upper end part of the nozzle 3 is a tapered hole with a large upper part and a small lower part, and a straight hole is arranged below the tapered hole.
The outer wall of the middle lower part of the nozzle seat 4 is in axial sliding sealing fit with the central hole of the piston 5, four sealing ring grooves are arranged on the outer wall of the nozzle seat 4, and sealing rings 9 in sliding sealing fit with the inner wall of the piston 5 are respectively arranged in each sealing ring groove. And a plurality of through holes 41 for communicating the central hole with the outer wall of the nozzle seat 4 are arranged on the side wall of the nozzle seat 4 between the second sealing ring groove and the third sealing ring groove.
Two sealing ring grooves are arranged on the outer wall of the piston outer flange 51, and a sealing ring 9 which is in sliding sealing fit with the inner wall of the main body 2 is respectively arranged in each sealing ring groove.
The upper position in the knife groove 21 is provided with a knife bearing seat 72 through a bolt 71 which is arranged on the side wall of the main body 2 along the radial direction of the main body 2, and the upper end of the righting blade 7 is hinged on the knife bearing seat 72 through a pin shaft 73. The bolt 71 is fitted with a washer 74 between the head of the bolt 71 and the holder 72.
The side of the righting blade 7 facing the inside of the main body 2 is provided with an inclined surface 75 matched with the outer wall of the lower end part of the piston 5, and the lower end part of the piston 5 is provided with a tapered surface 52 which is thick at the top and thin at the bottom and can push the righting blade 7 out of the knife groove 21 when the piston 5 slides downwards.
One side of the upper end part of the righting blade 7 facing the inside of the main body 2 is provided with a clamping groove 76 matched with the lower end part of the piston 5, the lower end part of the piston 5 is provided with an annular groove 53 which is positioned above the conical surface 52 and matched with the clamping groove 76, and the piston 5 slides upwards to drive the lower end of the righting blade 7 to be accommodated in the main body 2.
The side wall of the main body 2 at the lower part of the knife groove 21 of the main body 2 is provided with a limit block 22 for preventing the lower end part of the righting knife wing 7 from being completely separated from the knife groove 21, and the lower end part of the righting knife wing 7 is provided with a notch 77 matched with the limit block 22.
The side of the righting blade 7 facing the outside of the main body 2 is provided with a plurality of wear-resistant blocks 78.
The working principle is as follows: when liquid flows through the nozzle 3, the liquid flow generates pressure difference at two ends of the piston 5 due to the throttling effect, the piston 5 is pushed to move downwards by the pressure difference, the spring 6 is compressed, the conical surface 52 of the piston 5 expands to support the knife wing 7, and the outer edge of the knife wing 7 is supported to reach the maximum size when the knife wing is expanded. When pressure is relieved, the pressure difference between the two ends of the piston 5 disappears, the acting force of the spring 6 pushes the piston 5 to move upwards, so that the righting blade 7 is retracted into the main body 2, and the minimum outer diameter is the outer diameter of the main body 2. Because this instrument only one right wing 7, will salvage tubular column main part center top partially when opening, make it be in the eccentric position of big well bore, transfer the salvage tubular column and put the withdrawal type fishing spear into the fish dropping water eye while slowly rotating this moment.
Use notes:
1. the mud flow rate of more than 150L/m must be kept during the use process to work normally.
2. If a jam is encountered while rotating, torque-up rotation operation cannot be increased. The movable pipe column can be moved up and down firstly, and then the rotation is tried, so as to avoid damaging the righting blade.
3. When the fishing spear enters the fish, the fishing spear is required to rotate slowly and is required to be put down slowly.
4. If the fish is caught, the fishing pipe column should be stopped immediately and lowered continuously to prevent the fishing spear from being damaged.
Claims (10)
1. Single armed hydraulic pressure eccentric, it includes top connection (1), main part (2), nozzle (3), nozzle holder (4), piston (5), spring (6), right wing of a knife (7) and lower clutch (8), and the upper end of main part (2) is passed through the lower extreme axial of screw thread and top connection (1) and is linked to each other, and the upper end axial that the lower extreme passes through screw thread and lower clutch (8) links to each other its characterized in that: the piston (5) is positioned below the upper joint (1) and is arranged in the main body (2), the outer wall of an outer flange (51) at the upper end part of the piston (5) is in axial sliding sealing fit with the inner wall of the main body (2), the spring (6) is positioned in the main body (2) and is sleeved on the piston (5), the upper end of the spring (6) is matched with the lower end surface of the outer flange (51) of the piston, the lower end of the spring is matched with the inner end surface of the main body (2) facing upwards, the nozzle seat (4) is positioned in the upper joint (1) and the main body (2), the middle lower part of the nozzle seat (4) is arranged in a central hole of the piston (5), the nozzle (3) is arranged in the upper end of the central hole of the nozzle seat (4), a cutter groove (21) is arranged on the side wall of the main body (2) corresponding to the lower end part of the piston (5), the centering cutter wing (7) is positioned in the cutter groove (21) and the upper end of the centering cutter wing (7) is hinged on the main body (2), one side of the centralizing blade (7) facing the interior of the main body (2) is matched with the lower end part of the piston (5).
2. A single-arm hydraulic eccentric according to claim 1, characterized in that the inner hole of the upper end of the nozzle (3) is a tapered hole with a large upper part and a small lower part, and the lower part of the tapered hole is a straight hole.
3. The single-arm hydraulic eccentric device as recited in claim 1, wherein the outer wall of the middle lower part of the nozzle holder (4) is in axial sliding sealing fit with the central hole of the piston (5), four sealing ring grooves are arranged on the outer wall of the nozzle holder (4), and a sealing ring (9) in sliding sealing fit with the inner wall of the piston (5) is respectively arranged in each sealing ring groove.
4. A single-arm hydraulic eccentric as claimed in claim 3, wherein the side wall of the nozzle holder (4) between the second and third seal ring grooves is provided with a plurality of through holes (41) communicating the central hole of the nozzle holder (4) with the outer wall.
5. The single-arm hydraulic eccentric according to claim 1, characterized in that the outer wall of the outer piston flange (51) is provided with two sealing ring grooves, and each sealing ring groove is internally provided with a sealing ring (9) which is in sliding sealing fit with the inner wall of the main body (2).
6. The single-arm hydraulic eccentric as claimed in claim 1, wherein the upper position in the pocket (21) is provided with a holder (72) by a bolt (71) radially mounted on the side wall of the main body (2) along the main body (2), and the upper end of the centering blade (7) is hinge-mounted on the holder (72) by a pin (73).
7. The single-arm hydraulic eccentric as claimed in claim 1, wherein the side of the righting blade (7) facing the inside of the body (2) is provided with a bevel (75) which is matched with the outer wall of the lower end part of the piston (5), and the lower end part of the piston (5) is provided with a tapered surface (52) which is thick at the top and thin at the bottom and can push the righting blade (7) out of the knife slot (21) when the piston (5) slides downwards.
8. The single-arm hydraulic eccentric according to claim 7, characterized in that the side of the upper end of the righting blade (7) facing the inside of the body (2) is provided with a slot (76) which is matched with the lower end of the piston (5), the lower end of the piston (5) is provided with a slot (76) which is positioned above the conical surface (52) and is matched with the slot (76), and the piston (5) slides upwards to drive the lower end of the righting blade (7) to be received in the annular slot (53) in the body (2).
9. The single-arm hydraulic eccentric device as claimed in claim 1, wherein the side wall of the main body (2) at the lower part of the knife groove (21) of the main body (2) is provided with a stopper (22) for preventing the lower end part of the righting blade (7) from being completely removed from the knife groove (21), and the lower end part of the righting blade (7) is provided with a notch (77) matched with the stopper (22).
10. Single-arm hydraulic eccentric according to claim 1, characterized in that the side of the righting blade (7) facing the outside of the body (2) is fitted with a number of wear blocks (78).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122742936.XU CN216342010U (en) | 2021-11-10 | 2021-11-10 | Single-arm hydraulic eccentric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122742936.XU CN216342010U (en) | 2021-11-10 | 2021-11-10 | Single-arm hydraulic eccentric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342010U true CN216342010U (en) | 2022-04-19 |
Family
ID=81137522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122742936.XU Active CN216342010U (en) | 2021-11-10 | 2021-11-10 | Single-arm hydraulic eccentric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342010U (en) |
-
2021
- 2021-11-10 CN CN202122742936.XU patent/CN216342010U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Single arm hydraulic eccentric Effective date of registration: 20230329 Granted publication date: 20220419 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2023230000032 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220419 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2023230000032 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Single arm hydraulic eccentric Granted publication date: 20220419 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2024980017349 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |