CN210599700U - Anti-misoperation hydraulic clamp for rotary blowout preventer - Google Patents
Anti-misoperation hydraulic clamp for rotary blowout preventer Download PDFInfo
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- CN210599700U CN210599700U CN201921323406.8U CN201921323406U CN210599700U CN 210599700 U CN210599700 U CN 210599700U CN 201921323406 U CN201921323406 U CN 201921323406U CN 210599700 U CN210599700 U CN 210599700U
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- limiting valve
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Abstract
The utility model discloses a rotatory preventer prevents maloperation hydraulic pressure clamp, including two clamp cantilevers, bolted connection is passed through to two clamp cantilever one ends, two clamp cantilever other ends pass through connecting device and link to each other, still be connected with hydraulic pressure limit valve on the clamp cantilever, the case and the connecting device of hydraulic pressure limit valve contact, two clamp cantilever outsides all are connected with the clamp side arm, be connected with the pneumatic cylinder between two clamp side arms, the first oil circuit of opening of pneumatic cylinder links to each other with hydraulic pressure limit valve output, the oil circuit of closing of pneumatic cylinder links to each other with controlling means, the input of hydraulic pressure limit valve is opened the oil circuit through the second and is linked to each other with controlling means. Through the case with safe bolt compression hydraulic pressure limit valve for hydraulic oil can't get into the pneumatic cylinder through hydraulic pressure limit valve, has avoided the pneumatic cylinder extension, thereby has solved and has let the pneumatic cylinder not start under the condition that safe bolt did not pull out, has avoided safe bolt or even hydraulic pressure clamp damage.
Description
Technical Field
The utility model belongs to the drilling equipment field, concretely relates to rotatory preventer prevents maloperation hydraulic pressure clamp.
Background
At present, in the field use process of the rotary blowout preventer, after a hydraulic clamp is closed, safety bolts are required to be installed, and the phenomenon that the hydraulic clamp is loosened after a hydraulic pipeline breaks down, so that the wellhead sealing fails and even more serious safety accidents are caused is prevented. The safety bolt must be taken off before the hydraulic clamp needs to be opened, otherwise the opening tension of the hydraulic cylinder can act on the safety bolt, so that the safety bolt and even the hydraulic clamp are damaged, and safety accidents are caused. To prevent such safety accidents, it is necessary to completely eliminate such safety hazards from the design aspect of the rotary blowout preventer.
Disclosure of Invention
The utility model aims at providing a rotatory preventer prevents maloperation hydraulic pressure clamp avoids safety bolt and hydraulic pressure clamp damage.
The utility model aims at realizing through following technical means, a rotatory preventer prevents maloperation hydraulic pressure clamp, including two clamp cantilevers, bolted connection is passed through to two clamp cantilever one ends, two clamp cantilever other ends pass through connecting device and link to each other, still be connected with the hydraulic pressure limit valve on the clamp cantilever, the case and the connecting device of hydraulic pressure limit valve contact, two clamp cantilever outsides all are connected with the clamp side arm, be connected with the pneumatic cylinder between two clamp side arms, the first oil circuit of opening of pneumatic cylinder links to each other with the hydraulic pressure limit valve output, the oil circuit that closes of pneumatic cylinder links to each other with controlling means, the input of hydraulic pressure limit valve is opened the oil circuit through the second and is linked to each other with controlling.
Furthermore, the surfaces of the two clamp side arms are connected with connecting columns, and the two ends of the hydraulic cylinder are connected to the two connecting columns respectively.
Furthermore, the connecting device comprises safety bolt fixing nuts connected to the two clamp cantilevers, a safety bolt is connected between the two safety bolt fixing nuts, and a valve core of the hydraulic limiting valve is in contact with the bottom surface of the safety bolt.
Furthermore, the hydraulic limiting valve and the bottom surface of the safety bolt are positioned on the same hoop cantilever.
Further, the two safety bolt fixing nuts are located at the same height.
The beneficial effects of the utility model reside in that: the valve core of the hydraulic limiting valve is jacked through the safety bolt, so that the two cavities of the hydraulic limiting valve are not communicated, high-pressure liquid is blocked by the hydraulic limiting valve and cannot enter the hydraulic cylinder, the hydraulic clamp cannot be opened, and the hydraulic clamp is prevented from being opened under the condition that the safety bolt is not pulled out.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in figure 1, a clamp cantilever; 2. a hydraulic limit valve; 3. a safety bolt; 4. a hydraulic cylinder; 5. the safety bolt is used for fixing the nut; 6. a clamp side arm; 7-1, a first opening oil way; 7-2, closing an oil way; 7-3, a second opening oil way; 8. connecting columns.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
[ example 1 ]
As shown in figure 1, the misoperation prevention hydraulic clamp of the rotary blowout preventer comprises two clamp cantilevers 1, one ends of the two clamp cantilevers 1 are connected through bolts, the other ends of the two clamp cantilevers 1 are connected through a connecting device, a hydraulic limiting valve 2 is further connected onto the clamp cantilever 1, a valve core of the hydraulic limiting valve 2 is in contact with the connecting device, clamp side arms 6 are connected to the outer sides of the two clamp cantilevers 1, a hydraulic cylinder 4 is connected between the two clamp side arms 6, a first opening oil path 7-1 of the hydraulic cylinder 4 is connected with the output end of the hydraulic limiting valve 2, a closing oil path 7-2 of the hydraulic cylinder 4 is connected with a control device, and an input end of the hydraulic limiting valve 2 is connected with the control device through a second opening.
Bolted connection is passed through to the one end of two clamp cantilevers 1 for two clamp cantilevers 1 can rotate around the bolt, and the other end of two clamp cantilevers 1 passes through connecting device to link to each other, guarantees that the hydraulic pressure clamp closes.
The hydraulic limiting valve 2 is connected to one of the two clamp side arms 6, a valve core of the hydraulic limiting valve 2 is in contact with a connecting device, so that the valve core is in a compression mode, the clamp side arms 6 are connected to the outer sides of the two clamp cantilevers 1, a hydraulic cylinder 4 is connected between the two clamp side arms 6, the length of the hydraulic cylinder 4 is fixed in a compression state and is equivalent to that of the fixing device of the two clamp side arms 6, so that the hydraulic clamp cannot be opened, a first opening oil path 7-1 of the hydraulic cylinder 4 is connected with the output end of the hydraulic limiting valve 2, a closing oil path 7-2 of the hydraulic cylinder 4 is connected with a control device, and the input end of the hydraulic limiting valve 2 is connected with.
The control device injects high-pressure liquid into the hydraulic limiting valve 2 from the second opening oil path 7-3, the high-pressure liquid enters from the port A and is output from the port B, the high-pressure liquid enters the hydraulic cylinder 4 along the first opening oil path 7-1, then the output end of the hydraulic cylinder 4 is changed into an extension state from compression, the whole length of the hydraulic cylinder 4 is lengthened, the two clamp side arms 6 can be opened along with the hydraulic clamp side arms, and the whole hydraulic clamp can be opened.
However, when the connecting device is not taken down, the valve core of the hydraulic limiting valve 2 is pressed against the connecting device, so that the valve core is in a compressed state, the channel between the port A and the port B of the hydraulic limiting valve 2 is blocked, high-pressure liquid enters from the port A but cannot exit from the port B, naturally, the high-pressure liquid cannot enter the opening cavity of the hydraulic cylinder 4 along the first opening oil path 7-1, and the hydraulic cylinder 4 cannot extend.
[ example 2 ]
As shown in fig. 1, the surfaces of the two clamp side arms 6 are connected with connecting columns 8, and two ends of the hydraulic cylinder 4 are respectively connected with the two connecting columns 8.
The surfaces of the two clamp side arms 6 are connected with the convex connecting columns 8, the tail ends of the hydraulic cylinders 4 and the front ends of the telescopic rods are connected to the connecting rods 8 respectively, so that when the telescopic rods extend, the connecting columns 8, the two clamp side arms 6 and the two clamp cantilevers 1 can be pushed away.
The connecting device comprises safety bolt fixing nuts 5 connected to the two clamp cantilevers 1, a safety bolt 3 is connected between the two safety bolt fixing nuts 5, and a valve core of the hydraulic limiting valve 2 is in contact with the bottom surface of the safety bolt 3.
The two safety bolt fixing nuts 5 are at the same height.
The connecting device comprises two vertical safety bolt fixing nuts 5, the two safety bolt fixing nuts 5 are respectively connected to the two hoop cantilevers 1, the two safety bolt fixing nuts 5 are located at the same height, and holes of the nuts are also located on a central line, so that the safety bolts 3 can be screwed into the space between the two safety bolt fixing nuts 5. And the valve core of the hydraulic limiting valve 2 is contacted with the bottom surface of the safety bolt 3, so that the screwing-out of the safety bolt 3 from the nut direction is not influenced.
The hydraulic limiting valve 2 and the bottom surface of the safety bolt 3 are positioned on the same hoop cantilever 1.
As shown in figure 1, the safety bolt 3 is screwed in from the clamp cantilever 1 on the right side, the safety bolt 3 is positioned in the range of the clamp cantilever 1 on the left side, and the hydraulic limiting valve 2 is also connected to the clamp cantilever 1 on the left side, so that a valve core of the hydraulic limiting valve 2 is conveniently contacted with the bottom surface of the safety bolt 3.
In summary, when the safety bolt 3 is not pulled out, the high-pressure liquid enters the hydraulic limiting valve 2 from the port a of the hydraulic limiting valve 2 through the second opening oil path 7-3, and the valve core of the hydraulic limiting valve 2 is always in a compressed state because the valve core is propped against the bottom surface of the safety bolt 3, so that the passage between the port a and the port B in the hydraulic limiting valve 2 is blocked, the high-pressure liquid cannot go out from the port B and naturally cannot reach the hydraulic cylinder 4, so that the hydraulic cylinder 4 extends, and the hydraulic cylinder 4 is completely prevented from being opened under the condition that the safety bolt 3 is not pulled out.
When the safety screw 3 is pulled out, the front of the valve core is not blocked by the safety screw 3, the valve core extends under the action of a spring of the valve core, a passage between an opening A and an opening B in the hydraulic limiting valve 2 is communicated, high-pressure liquid entering from the opening A flows out from the opening B and enters an opening cavity of the hydraulic cylinder 4 through the first opening passage 7-1, and the hydraulic cylinder 4 extends to drive the whole hydraulic clamp to be opened. And closing the oil circuit takes care of the retraction of the hydraulic cylinder 4, thus closing the hydraulic clamp.
Claims (5)
1. The utility model provides a rotatory preventer prevents maloperation hydraulic pressure clamp which characterized in that: the hydraulic clamp comprises two clamp cantilevers (1), one ends of the two clamp cantilevers (1) are connected through bolts, the other ends of the two clamp cantilevers (1) are connected through a connecting device, a hydraulic limiting valve (2) is further connected onto the clamp cantilevers (1), a valve core of the hydraulic limiting valve (2) is in contact with the connecting device, clamp side arms (6) are connected to the outer sides of the two clamp cantilevers (1), a hydraulic cylinder (4) is connected between the two clamp side arms (6), a first opening oil way (7-1) of the hydraulic cylinder (4) is connected with the output end of the hydraulic limiting valve (2), a closing oil way (7-2) of the hydraulic cylinder (4) is connected with a control device, and the input end of the hydraulic limiting valve (2) is connected with the control device through a second opening oil.
2. A rotary blowout preventer anti-misoperation hydraulic clamp according to claim 1, wherein: the two clamp side arms (6) are connected with connecting columns (8) on the surface, and two ends of the hydraulic cylinder (4) are connected to the two connecting columns (8) respectively.
3. A rotary blowout preventer anti-misoperation hydraulic clamp according to claim 1, wherein: the connecting device comprises safety bolt fixing nuts (5) connected to the two clamp cantilevers (1), a safety bolt (3) is connected between the two safety bolt fixing nuts (5), and a valve core of the hydraulic limiting valve (2) is in contact with the bottom surfaces of the safety bolts (3).
4. A rotary blowout preventer anti-misoperation hydraulic clamp according to claim 3, wherein: the hydraulic limiting valve (2) and the bottom surface of the safety bolt (3) are positioned on the same hoop cantilever (1).
5. A rotary blowout preventer anti-misoperation hydraulic clamp according to claim 3, wherein: the two safety bolt fixing nuts (5) are positioned at the same height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323406.8U CN210599700U (en) | 2019-08-15 | 2019-08-15 | Anti-misoperation hydraulic clamp for rotary blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323406.8U CN210599700U (en) | 2019-08-15 | 2019-08-15 | Anti-misoperation hydraulic clamp for rotary blowout preventer |
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| Publication Number | Publication Date |
|---|---|
| CN210599700U true CN210599700U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921323406.8U Active CN210599700U (en) | 2019-08-15 | 2019-08-15 | Anti-misoperation hydraulic clamp for rotary blowout preventer |
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| CN (1) | CN210599700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274251A (en) * | 2023-03-29 | 2023-06-23 | 连云港赣榆强盛纸业有限公司 | Paperboard crushing and recycling device and recycling method |
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2019
- 2019-08-15 CN CN201921323406.8U patent/CN210599700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274251A (en) * | 2023-03-29 | 2023-06-23 | 连云港赣榆强盛纸业有限公司 | Paperboard crushing and recycling device and recycling method |
| CN116274251B (en) * | 2023-03-29 | 2023-11-17 | 连云港市赣榆区知识产权维权援助中心(连云港市赣榆区知识产权保护与服务中心) | Paperboard crushing and recycling device and recycling method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201123 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710018 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED ENGINEERING TECHNOLOGY Research Institute |
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| TR01 | Transfer of patent right |