CN217897828U - Reinforced square drill rod cock with pressure switch - Google Patents
Reinforced square drill rod cock with pressure switch Download PDFInfo
- Publication number
- CN217897828U CN217897828U CN202222236936.7U CN202222236936U CN217897828U CN 217897828 U CN217897828 U CN 217897828U CN 202222236936 U CN202222236936 U CN 202222236936U CN 217897828 U CN217897828 U CN 217897828U
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- increasing
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- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 46
- 244000309464 bull Species 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000001965 increasing effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
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- Taps Or Cocks (AREA)
- Multiple-Way Valves (AREA)
Abstract
The utility model relates to a reinforcement area is pressed switch kelly plug valve, it includes body (1), go up ball seat (2), ball valve (3), ball seat (4) and swivel pin (5) down, be equipped with gear wheel (52) on the outer wall of swivel pin outward flange (51), be equipped with reinforcement knob hole (13) on body (1) lateral wall, reinforcement knob (6) are installed to reinforcement knob hole (13) internal rotation, be equipped with on reinforcement knob (6) with gear wheel (52) engaged with pinion (61) on swivel pin (5), reinforcement knob (6) are equipped with twist head (62) towards the outer tip of body (1), reinforcement knob (6) drive the swivel pin and rotate, swivel pin (5) drive the ball valve and rotate, realize the reinforcement switch ball valve. The boosting knob is added on the basis of the conventional kelly bar plug valve, so that the plug valve can be manually opened and closed when the pressure difference between two ends is large, the use is safer and more reliable, and the smooth drilling work is ensured.
Description
Technical Field
The utility model relates to an oil tool, concretely relates to reinforcement area switch kelly plug valve.
Background
The kelly cock valve is one of the effective tools for preventing blowout and is one of the manual control valves in drilling string circulating system. In the drilling operation process, the upper end and the lower end of the kelly bar are both connected with plug valves for controlling well kick and blowout, and simultaneously can be used as a mud saving valve to prevent mud from splashing on the rotary table. When the bottom hole pressure is increased to be difficult to control, the plug valve can be closed to block the bottom hole pressure, so that the blowout accident is prevented. Sometimes it is also necessary to open the plug valve under pressure to allow communication within the drill string in order to deal with the accident. When the pressure difference between two ends of the plug valve is large, the torque of a rotary pin switch is also very large, and the conventional plug valve is difficult to open by manpower, so that the smooth drilling work is directly influenced.
Disclosure of Invention
The utility model aims at providing a pressure difference at plug valve both ends also can the manpower be opened when very big, uses more reliably, can guarantee the reinforcement area that drilling work goes on smoothly and press switch kelly bar plug valve.
The technical solution of the utility model is that: the boosting knob is screwed by a wrench, the boosting knob drives the rotary pin to rotate through the small gear and the large gear, the rotary pin drives the ball valve to rotate, and the rotary pin drives the ball valve to rotate so as to realize the boosting switch ball valve.
The technical effects of the utility model are that: the boosting knob is added on the basis of the conventional kelly bar plug valve, so that the plug valve can be manually opened and closed when the pressure difference between two ends is large, the use is safer and more reliable, and the smooth drilling work is ensured. The square drill rod plug valve is suitable for the condition of high pressure difference, can be opened and closed by manually rotating the ball valve by 90 degrees through the force-increasing knob by adopting a special wrench under the condition of the high pressure difference of more than 35MPa, overcomes the defect that the conventional square drill rod plug valve cannot be manually opened when the pressure difference at two ends is large, and achieves ideal use effect and target.
Drawings
Fig. 1 is a cross-sectional structure diagram of the embodiment of the present invention.
Detailed Description
As shown in figure 1, the boosting switch ball valve comprises a body 1, an upper ball seat 2, a ball valve 3, a lower ball seat 4 and a rotating pin 5, wherein the upper ball seat 2, the ball valve 3 and the lower ball seat 4 are installed in a central hole 11 of the body 1 in a matched mode, the rotating pin 5 and the ball valve 3 are installed in a rotating pin hole 12 on the side wall of the body 1 in a matched mode, a large gear 52 is arranged on the outer wall of a rotating pin outer flange 51 located between the ball valve 3 and the body 1, a boosting knob hole 13 is formed in the side wall of the body 1, which is adjacent to the rotating pin hole 12 in the axial direction of the body 1, a boosting knob 6 matched with the rotating pin 5 is installed in the boosting knob hole 13 in a rotating mode, a small gear 61 meshed with the large gear 52 on the rotating pin 5 is arranged on the boosting knob 6, a screwing head 62 matched with a wrench is arranged at the end, facing the outer side of the body 1, of the boosting knob 6 is screwed through the wrench, the boosting knob 6 drives the rotating pin 5 to rotate through the small gear 61 and the large gear 52, the rotating pin 3 to drive the ball valve 3 to rotate, and achieve the boosting switch ball valve 3.
The upper end of body 1 is equipped with the internal thread 14 that is connected with the kelly, and the lower extreme is equipped with the external screw thread 15 that is connected with the kelly.
The ball valve further comprises an upper splicing ring 7, a supporting ring 8, a hole clamp spring 9, a lower splicing ring 10 and a multilayer wave spring 20, wherein the periphery of the upper splicing ring 7 is installed in an upper splicing ring groove 16 on the inner wall of the body 1, the supporting ring 8 is installed in the upper splicing ring 7 and outwards props up the upper splicing ring 7, the hole clamp spring 9 is located above the supporting ring 8 and is installed in a clamp spring groove 71 on the inner wall of the upper splicing ring 7, an upper ball seat 2 is located below the upper splicing ring 7 and is installed in a central hole 11 of the body 1, the periphery of the lower splicing ring 10 is installed in a lower splicing ring groove 17 on the inner wall of the body 1 below the upper ball seat 2 and is sleeved outside the lower end of the upper ball seat 2, the ball valve 3 and the lower ball seat 4 are sequentially located below the upper ball seat 2 from top to bottom and are installed in the central hole 11 of the body 1, the multilayer wave spring 20 is located in the central hole 11 of the body 1 and is sleeved outside the lower end of the lower ball seat 4, the upper end and lower end faces of the multilayer wave spring 20 are respectively matched with the inner end faces of the lower ball seat 4 and the inner end face of the ball valve 1, a rotating pin 5 is rotatably installed in a rotating pin hole 12 arranged on the side wall of the body 1, and a rotating key groove 54 is arranged on the hexagonal pin 3 of the ball valve 3.
Two sealing ring grooves are arranged on the outer wall of the upper ball seat 2, which is in sealing fit with the body 1, and an O-shaped sealing ring 30 which is in sealing fit with the inner wall of the body 1 is respectively arranged in each sealing ring groove; the outer wall of the lower ball seat 4 which is in sealing fit with the body 1 is provided with a sealing ring groove, and a one-way sealing ring 40 which is in sealing fit with the inner wall of the body 1 is arranged in the sealing ring groove.
Two sealing ring grooves are arranged on the outer wall of the rotating pin 5 which is in sealing fit with the rotating pin hole 12, and an O-shaped sealing ring 30 which is in sealing fit with the inner wall of the rotating pin hole 12 is respectively arranged in each sealing ring groove. The rotation pin 5 is sleeved with a large friction reducing pad 55 positioned between the end surface of the outer flange 51 of the rotation pin 5 and the body 1. The large friction reducing pad 55 is a copper pad.
The boosting knob hole 13 is positioned below the rotating pin hole 12 and is arranged on the side wall of the body 1 along the radial direction of the body 1, and the axial direction of the boosting knob hole 13 is parallel to the axial direction of the rotating pin hole 12. Two sealing ring grooves are arranged on the outer wall of the boosting knob 6 which is in sealing fit with the boosting knob hole 13, and an O-shaped sealing ring 30 which is in sealing fit with the inner wall of the boosting knob hole 13 is respectively arranged in each sealing ring groove. The force-increasing knob 6 is sleeved with a small friction-reducing pad 63 positioned between the end surface of the pinion 61 of the force-increasing knob 6 and the body 1. The small friction reducing pad 63 is a copper pad. The screwing head 62 on the power-increasing knob 6 is hexagonal.
The big gear 52 on the rotating pin 5 is a sector gear with a circumferential angle larger than 90 degrees, and the small gear 61 on the power-increasing knob 6 is a circumferential gear with 360 degrees. In this embodiment, the ratio of the radius of the large gear 52 on the rotation pin 5 to the radius of the small gear 61 on the power knob 6 is designed to be 3.8:1, the force increasing knob 6 rotates for a circle to drive the rotating pin 5 to rotate for 90 degrees, and after a torque is applied to the small gear 61, the torque transmitted to the large gear 52 is increased by 3.8 times, so that the force increasing knob 6 drives the rotating pin 5 to rotate to achieve the force increasing effect.
The working principle is as follows:
the torque resisting the opening and closing of the cock valve is composed of two parts, one is a friction force between the rotation pin 5 and the body 1, and the other is a friction force between the ball valve 3 and the upper and lower ball seats 2 and 4, and is transmitted to the rotation pin 5 through the key 53. The boosting mechanism that the small gear 61 is meshed with the large gear 52 is adopted in the boosting area pressure switch kelly bar plug valve, so that larger friction torque between the ball valve 3 and the ball seat is converted into smaller torque on the boosting knob 6, and the plug valve with large pressure difference at two ends can be opened by the force of ordinary people.
In order to reduce the frictional torque, a large friction reducing pad 55 and a small friction reducing pad 63 are respectively added between the rotation pin 5 and the body 1 and between the power knob 6 and the body 1, so that the frictional resistance is reduced to the maximum extent and the switching torque is reduced as much as possible.
The working principle of the boosting area pressure switch kelly bar plug valve is the same as that of the conventional plug valve, and the kelly bar plug valve rotates 90 degrees through the ball valve 3 0 To effect opening and closing. The operation can be carried out according to two conditions, wherein in one condition, when larger hydraulic pressure is not applied to the two ends of the plug valve, a wrench can be directly inserted into an inner hexagonal wrench hole 54 of a rotating pin 5 to apply torque to open the kelly bar plug valve under pressure; another situation is that when a large hydraulic pressure difference exists between two ends of the plug valve, especially when the pressure difference is more than 10MPa, the plug valve is difficult to open by using a wrench inserted into the internal hexagonal wrench hole 54 of the rotating pin 5 to apply torqueOr the plug valve is closed, a small wrench can be used to drive the force increasing knob 6, so that the torque is transmitted to the rotating pin 5 through the force increasing knob 6 to drive the rotating pin 5 to rotate 90 0 Realize opening and closing the plug valve.
The boosting and under-pressure switching kelly plug valve has two sealing types, one of which is that the ball valve 3, the upper ball seat 2 and the lower ball seat 4 need to rotate mutually to realize opening and closing, so that the effect of sealing liquid is achieved by tightly screwing and seaming a matching surface through precision grinding processing; secondly, the matching surfaces between the upper ball seat 2, the lower ball seat 4 and the body 1, between the rotating pin 5 and the body 1, and between the force-increasing knob 6 and the body 1 are reliably sealed by installing an O-shaped sealing ring 30 and a one-way sealing ring 40 respectively.
The using method and the safety precautions are as follows:
1. before use, a special spanner is used for rotating the rotating pin 5 and the boosting knob 6 to see whether the rotation can be flexibly carried out or not and whether the switch positioning is accurate and reliable or not.
2. After connection to the drill string, the special wrench is again used to try the degree of flexibility of the rotation pin 5 and power knob 6 and turn the rotation pin 5 to the "on" direction.
3. When the drill string has well kick or blowout in the well, the plug valve on the kelly bar, the lower plug valve or the well head safety valve can be closed nearby.
4. Plug valves should generally not be switched with a large pressure difference across the plug valve to avoid damage to the quality of the plug valve or to the safety of the operator.
5. If the plug valve must be opened and closed under pressure according to circumstances, it is preferable to perform the opening and closing operation when the pressure difference between both ends is less than 20 MPa. When the underground pressure is too high, the pressure at the two ends of the plug valve is preferably adjusted and balanced by pressurizing at the wellhead, and then the switch operation is carried out.
6. If the pressure difference is more than 35MPa, the boosting knob is used for operation, and the position which is easy to leak is avoided during operation, such as: the direction in which the rotation pin 5 and the power knob 6 face each other, and the like. The power-increasing knob 6 is usually rotated by nearly one turn to drive the rotation pin 5 to rotate 90 0 Realize the switching cock valve.
Maintenance:
1. after the tool is used up, the tool is sent to a pipe substation (workshop) to be disassembled, checked, cleaned and oiled and reassembled (a new sealing ring is replaced).
2. After disassembly, the joint threads, the sealing spherical surface and the gears should be checked for breakage, so as not to affect the performance of the tool.
3. After reloading, a clear water pressure test is carried out.
4. And after the pressure test is qualified, rotating the ball valve to a half-open state, and draining the clean water in the ball valve.
And coating rust-proof and anti-corrosion lubricating grease on threads at two ends, and then placing the lubricating grease in a ventilated and dry place for storage for the next use.
Claims (10)
1. Switch kelly bar plug valve is pressed in reinforcement area, it includes body (1), goes up ball seat (2), ball valve (3), lower ball seat (4) and swivel pin (5), goes up ball seat (2), ball valve (3) and lower ball seat (4) and mutually supports and install in centre bore (11) of body (1), and swivel pin (5) cooperate with ball valve (3) to install in swivel pin hole (12) on body (1) lateral wall, its characterized in that: the outer wall of a rotating pin outer flange (51) between a ball valve (3) and a body (1) is provided with a large gear (52), the side wall of the body (1) close to a rotating pin hole (12) along the axial direction of the body (1) is provided with a boosting knob hole (13), a boosting knob (6) matched with the rotating pin (5) is rotatably installed in the boosting knob hole (13), a small gear (61) meshed with the large gear (52) on the rotating pin (5) is arranged on the boosting knob (6), a screwing head (62) matched with a wrench is arranged at the end, facing the outer side of the body (1), of the boosting knob (6), the boosting knob (6) is screwed by the wrench, the rotating pin (5) is driven by the boosting knob (6) through the small gear (61) and the large gear (52) to rotate, the rotating pin (5) drives the ball valve (3) to rotate, and the boosting switch ball valve (3) is achieved.
2. The boosting kelly bar plug valve with the pressure switch according to claim 1, characterized in that it further comprises an upper split ring (7), a support ring (8), a hole snap spring (9), a lower split ring (10) and a multi-layer wave spring (20), the periphery of the upper split ring (7) is installed in an upper split ring groove (16) on the inner wall of the body (1), the support ring (8) is installed in the upper split ring (7) to outwardly expand the upper split ring (7), the hole snap spring (9) is located above the support ring (8) and installed in a snap spring groove (71) on the inner wall of the upper split ring (7), the upper ball seat (2) is located below the upper split ring (7) and installed in the central hole (11) of the body (1), the periphery of the lower split ring (10) is installed in a lower split ring groove (17) on the inner wall of the body (1) below the upper ball seat (2) and sleeved outside the lower end of the upper ball seat (2), the ball seat (3) and the lower ball seat (4) are sequentially located below the upper split ring (2) and installed in the central hole (1) of the body, the multi-layer wave spring (4) is respectively sleeved on the lower end surface of the ball seat (1) and the lower ball seat (4), the rotating pin (5) is rotatably installed in a rotating pin hole (12) in the side wall of the body (1), a key (53) arranged at one end, facing the ball valve (3), of the rotating pin (5) is matched with a key groove (31) in the ball valve (3), and an inner hexagonal wrench hole (54) is formed in the end face, facing the outside of the body (1), of the rotating pin (5).
3. The power-increasing kelly cock with pressure switch of claim 1, wherein the outer wall of the upper ball seat (2) which is in sealing fit with the body (1) is provided with two sealing ring grooves, and each sealing ring groove is internally provided with an O-shaped sealing ring (30) which is in sealing fit with the inner wall of the body (1); the outer wall of the lower ball seat (4) which is in sealing fit with the body (1) is provided with a sealing ring groove, and a one-way sealing ring (40) which is in sealing fit with the inner wall of the body (1) is arranged in the sealing ring groove.
4. The power-increasing kelly plug valve with pressure switch of claim 1, wherein the outer wall of the rotation pin (5) which is in sealing fit with the rotation pin hole (12) is provided with two sealing ring grooves, and each sealing ring groove is internally provided with an O-shaped sealing ring (30) which is in sealing fit with the inner wall of the rotation pin hole (12).
5. The power-increasing kelly bar plug valve with pressure switch according to claim 1, characterized in that the rotation pin (5) is sleeved with a large friction-reducing pad (55) positioned between the end face of the outer flange (51) of the rotation pin (5) and the body (1).
6. The power-increasing band-pressure switch kelly plug valve of claim 1, wherein the power-increasing knob hole (13) is located below the rotation pin hole (12) and is arranged on the side wall of the body (1) along the radial direction of the body (1), and the axial direction of the power-increasing knob hole (13) is parallel to the axial direction of the rotation pin hole (12).
7. The power-increasing push-pull switch kelly plug valve according to claim 1, wherein the outer wall of the power-increasing knob (6) which is in sealing fit with the power-increasing knob hole (13) is provided with two sealing ring grooves, and each sealing ring groove is respectively provided with an O-shaped sealing ring (30) which is in sealing fit with the inner wall of the power-increasing knob hole (13).
8. The power-increasing band-pressure switch kelly plug valve of claim 1, characterized in that the power-increasing knob (6) is sleeved with a small friction-reducing pad (63) between the end face of the pinion (61) of the power-increasing knob (6) and the body (1).
9. The power-increasing band-pressure switch kelly plug valve of claim 1, wherein the screw head (62) on the power knob (6) is hexagonal.
10. The power-increasing press-switch kelly plug valve of claim 1, wherein the bull gear (52) on the rotary pin (5) is a sector gear with a circumferential angle greater than 90 degrees, and the pinion gear (61) on the power-increasing knob (6) is a 360-degree circumferential gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222236936.7U CN217897828U (en) | 2022-08-25 | 2022-08-25 | Reinforced square drill rod cock with pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222236936.7U CN217897828U (en) | 2022-08-25 | 2022-08-25 | Reinforced square drill rod cock with pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217897828U true CN217897828U (en) | 2022-11-25 |
Family
ID=84107452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222236936.7U Active CN217897828U (en) | 2022-08-25 | 2022-08-25 | Reinforced square drill rod cock with pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217897828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116988751A (en) * | 2023-09-26 | 2023-11-03 | 牡丹江通用石油工具有限公司 | Dual-channel plug valve |
-
2022
- 2022-08-25 CN CN202222236936.7U patent/CN217897828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116988751A (en) * | 2023-09-26 | 2023-11-03 | 牡丹江通用石油工具有限公司 | Dual-channel plug valve |
| CN116988751B (en) * | 2023-09-26 | 2023-12-15 | 牡丹江通用石油工具有限公司 | Dual-channel plug valve |
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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: Booster pressure switch kelly cock valve Effective date of registration: 20230329 Granted publication date: 20221125 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: 20221125 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: Boosting pressure switch square drill pipe plug valve Granted publication date: 20221125 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 |