CN221096473U - Reducing flashboard - Google Patents
Reducing flashboard Download PDFInfo
- Publication number
- CN221096473U CN221096473U CN202323270894.XU CN202323270894U CN221096473U CN 221096473 U CN221096473 U CN 221096473U CN 202323270894 U CN202323270894 U CN 202323270894U CN 221096473 U CN221096473 U CN 221096473U
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- shearing
- rubber core
- reducing section
- flashboard
- flashboard body
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- 238000010008 shearing Methods 0.000 claims abstract description 199
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003292 glue Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a variable-diameter flashboard, which belongs to the technical field of well control equipment, and comprises an upper shearing flashboard body and a lower shearing flashboard body, and is characterized in that: the upper shearing flashboard is characterized in that an upper shearing rubber core and an upper top rubber core are arranged on the upper shearing flashboard body, the upper shearing rubber core and the upper top rubber core are reducing rubber cores, a lower shearing rubber core and a lower top rubber core are arranged on the lower shearing flashboard body, the lower shearing rubber core and the lower top rubber core are reducing rubber cores, an upper steel clamping piece used for clamping the upper shearing rubber core is fixed at the front end of the upper shearing flashboard body, and a lower steel clamping piece used for clamping the lower shearing rubber core is fixed at the front end of the lower shearing flashboard body. The utility model not only can realize the sealing of drill rods with different diameters, but also can ensure good sealing effect.
Description
Technical Field
The utility model relates to the technical field of well control equipment, in particular to a variable-diameter flashboard.
Background
The ram blowout preventer is a device for pushing two rams with rubber cores from the left side and the right side to the center of a well bore to close a wellhead by utilizing hydraulic pressure, and is important equipment in well control work.
The ram blowout preventer has the main functions of closing a wellhead and preventing overflow or blowout, and has the following specific functions:
when a pipe column is arranged in the well, a semi-sealing flashboard corresponding to the pipe column in size can be used for sealing the annular space of the well mouth;
when no pipe column exists in the well, the fully-sealed flashboard can fully seal the well mouth;
When the well inner pipe column is needed to be sheared and the well mouth is fully sealed, the shearing flashboard can be used for shearing the well inner pipe column and fully sealing the well mouth;
The shell of the ram blowout preventer is provided with a side hole, so that the side hole can be used for throttling and pressure relief; ram blowout preventers may be used to seal wells for long periods of time.
The working principle of the ram blowout preventer is as follows: when high-pressure oil of the hydraulic control system enters the left and right hydraulic cylinder flashboard closing cavities, the piston is pushed to drive the piston rod and the left and right flashboard assemblies to respectively move towards the center of the wellhead along the flashboard cavities of the shell, so that well sealing is realized. Meanwhile, hydraulic oil enters a locking cavity of the locking oil cylinder to push the locking shaft to lock the hydraulic oil cylinder in place, so that well opening caused by leakage of the hydraulic oil after well closing is avoided.
A typical dual ram blowout preventer includes a housing, an oil cylinder, a cylinder head, rams, side doors, and a locking shaft.
The casing is the main part of the ram blowout preventer, bears wellhead pressure, provides space for ram movement, and is provided with side doors and side holes. The oil cylinder is a power part of the ram blowout preventer, and drives the piston and the piston rod to drive the ram switch through hydraulic oil. The cylinder cover is a closed part of the cylinder and is provided with a hydraulic oil inlet and outlet and a hydraulic control pressure relief device. The ram is a well-sealing element of the ram blowout preventer, is provided with a rubber core, and can fully seal or semi-seal a wellhead according to the condition in the well. The side door is a maintenance part of the ram blowout preventer, can be opened or closed, and is convenient for replacing or maintaining the rubber core or other components. The locking shaft is a locking part of the ram blowout preventer, can lock or unlock the hydraulic cylinder, and can ensure that the well can not be opened due to hydraulic oil leakage after well closing.
At present, the shearing flashboard serving as a well sealing element of the flashboard blowout preventer in the prior art can rapidly shear a continuous pipe, but has poor sealing effect and can not realize sealing of drill pipes with different diameters.
Chinese patent document with publication No. CN210068059U, publication No. 2020, 02/14 discloses a shearing flashboard with sealing function, characterized in that: the device comprises an upper shearing flashboard component and a lower shearing flashboard component which are matched for use; the upper shearing flashboard assembly comprises an upper shearing flashboard body and an upper shearing rubber core assembly, and the tail end of the upper shearing rubber core assembly is embedded and fixed in the upper shearing flashboard body; the lower shear ram assembly comprises a lower shear ram body, and a lower shear rubber core assembly with the tail end embedded and fixed in the lower shear ram body; the upper shearing rubber core assembly comprises an upper shearing cutter and a first sealing rubber core arranged at the bottom of the tail end of the upper shearing cutter; the lower shear rubber core assembly comprises a lower shear blade and a second sealing rubber core arranged at the bottom of the tail end of the lower shear blade; when in shearing, the upper shearing knife and the lower shearing knife are folded for shearing; and when the sealing is performed after shearing, the upper shearing knife is in contact sealing with the second sealing rubber core.
The shearing flashboard disclosed in the patent document can be used for rapidly shearing and sealing the continuous pipe, so that the safety of a wellhead after the continuous pipe is taken out is ensured. However, sealing of drill rods with different diameters still cannot be realized, and the functions are single.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model provides the reducing flashboard, which not only can realize the sealing of drill rods with different diameters, but also can ensure good sealing effect.
The utility model is realized by the following technical scheme:
the utility model provides a reducing flashboard, includes the upper shearing flashboard body and cuts the flashboard body down, its characterized in that: the upper shearing flashboard is characterized in that an upper shearing rubber core and an upper top rubber core are arranged on the upper shearing flashboard body, the upper shearing rubber core and the upper top rubber core are reducing rubber cores, a lower shearing rubber core and a lower top rubber core are arranged on the lower shearing flashboard body, the lower shearing rubber core and the lower top rubber core are reducing rubber cores, an upper steel clamping piece used for clamping the upper shearing rubber core is fixed at the front end of the upper shearing flashboard body, and a lower steel clamping piece used for clamping the lower shearing rubber core is fixed at the front end of the lower shearing flashboard body.
The upper shearing flashboard body is provided with a groove, and the upper shearing rubber core is positioned in the groove.
The upper shearing rubber core comprises an upper transverse reducing section and an upper longitudinal reducing section which are integrally formed.
The upper transverse reducing section is positioned in the upper steel clamping piece, and the upper longitudinal reducing section is contacted with the bottom of the groove.
The lower shearing flashboard body is provided with a groove, and the lower shearing rubber core is positioned in the groove.
The lower shearing rubber core comprises a lower transverse reducing section and a lower longitudinal reducing section, and the lower transverse reducing section and the lower longitudinal reducing section are integrally formed.
The lower transverse reducing section is positioned in the lower steel clamping piece, and the lower longitudinal reducing section is contacted with the bottom of the groove.
The beneficial effects of the utility model are mainly shown in the following aspects:
1. According to the utility model, the upper shearing flashboard body is provided with the upper shearing rubber core and the upper top rubber core, the upper shearing rubber core and the upper top rubber core are all reducing rubber cores, the lower shearing flashboard body is provided with the lower shearing rubber core and the lower top rubber core, the lower shearing rubber core and the lower top rubber core are all reducing rubber cores, the front end of the upper shearing flashboard body is fixedly provided with the upper steel clamping piece used for clamping the upper shearing rubber core, and the front end of the lower shearing flashboard body is fixedly provided with the lower steel clamping piece used for clamping the lower shearing rubber core.
2. According to the utility model, the upper shearing flashboard body is provided with the groove, and the upper shearing rubber core is positioned in the groove, so that the upper shearing rubber core can be well fixed, and the use stability is ensured.
3. The upper shearing rubber core comprises the upper transverse reducing section and the upper longitudinal reducing section, and the upper transverse reducing section and the upper longitudinal reducing section are integrally formed, so that the upper shearing rubber core is simple in integral structure and good in structural strength.
4. According to the utility model, the upper transverse reducing section is positioned in the upper steel clamping piece, and the upper longitudinal reducing section is contacted with the bottom of the groove, so that the upper shearing rubber core can be further and firmly fixed, and the use reliability is ensured.
5. According to the utility model, the lower shearing flashboard body is provided with the groove, and the lower shearing rubber core is positioned in the groove, so that the lower shearing rubber core can be well fixed, and the use stability is ensured.
6. The lower shearing rubber core comprises the lower transverse reducing section and the lower longitudinal reducing section, and the lower transverse reducing section and the lower longitudinal reducing section are integrally formed, so that the lower shearing rubber core has a simple integral structure and good structural strength.
7. According to the utility model, the lower transverse reducing section is positioned in the lower steel clamping piece, and the lower longitudinal reducing section is contacted with the bottom of the groove, so that the lower shearing rubber core can be further and firmly fixed, and the use reliability is ensured.
Drawings
The utility model will be further described in detail with reference to the drawings and detailed description, wherein:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the top core of the present utility model;
FIG. 3 is a schematic view of the structure of the upper shear rubber core of the present utility model;
FIG. 4 is a schematic view of the structure of the lower shear rubber core according to the present utility model;
The marks in the figure: 1. the upper shearing flashboard body, 2, the lower shearing flashboard body, 3, an upper shearing rubber core, 4, an upper top rubber core, 5, a lower shearing rubber core, 6, a lower top rubber core, 7, an upper steel clamping piece, 8, a lower steel clamping piece, 9, an upper transverse reducing section, 10, an upper longitudinal reducing section, 11, a lower transverse reducing section, 12 and a lower longitudinal reducing section.
Detailed Description
Example 1
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
This embodiment is the most basic implementation mode, be provided with on the upper shearing flashboard body 1 and go up shearing gum core 3 and go up top and glue core 4, go up shearing gum core 3 and go up top and glue core 4 and be the reducing and glue core, be provided with down on the lower shearing flashboard body 2 and cut gum core 5 and lower top and glue core 6, lower shearing gum core 5 and lower top glue core 6 are the reducing and glue the core, the front end of going up shearing flashboard body 1 is fixed with the last steel clamp 7 that is used for the centre gripping to cut gum core 3, the front end of lower shearing flashboard body 2 is fixed with the lower steel clamp 8 that is used for the centre gripping to cut gum core 5 down, as a complete technical scheme, compared with prior art, not only can realize the sealing of different diameter drilling rods, but also can ensure good sealed effect.
Example 2
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
The upper shearing flashboard body 1 is provided with a groove, and the upper shearing rubber core 3 is positioned in the groove.
In this embodiment, a groove is formed in the upper shearing gate plate body 1, and the upper shearing rubber core 3 is located in the groove, so that the upper shearing rubber core 3 can be well fixed, and the use stability is ensured.
Example 3
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
The upper shearing flashboard body 1 is provided with a groove, and the upper shearing rubber core 3 is positioned in the groove.
Preferably, the upper shear rubber core 3 comprises an upper transverse reducing section 9 and an upper longitudinal reducing section 10, and the upper transverse reducing section 9 and the upper longitudinal reducing section 10 are integrally formed.
In this embodiment, the upper shear rubber core 3 includes an upper transverse reducing section 9 and an upper longitudinal reducing section 10, and the upper transverse reducing section 9 and the upper longitudinal reducing section 10 are integrally formed, so that the upper shear rubber core 3 has a simple overall structure and good structural strength.
Example 4
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
The upper shearing flashboard body 1 is provided with a groove, and the upper shearing rubber core 3 is positioned in the groove.
The upper shearing rubber core 3 comprises an upper transverse reducing section 9 and an upper longitudinal reducing section 10, and the upper transverse reducing section 9 and the upper longitudinal reducing section 10 are integrally formed.
Further preferably, the upper transverse reducing section 9 is located in the upper steel clamping piece 7, and the upper longitudinal reducing section 10 is in contact with the bottom of the groove.
In this embodiment, the upper transverse reducing section 9 is located in the upper steel clamping piece 7, and the upper longitudinal reducing section 10 contacts with the bottom of the groove, so that the upper shear rubber core 3 can be further and firmly fixed, and the use reliability is ensured.
Example 5
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
The upper shearing flashboard body 1 is provided with a groove, and the upper shearing rubber core 3 is positioned in the groove.
The upper shearing rubber core 3 comprises an upper transverse reducing section 9 and an upper longitudinal reducing section 10, and the upper transverse reducing section 9 and the upper longitudinal reducing section 10 are integrally formed.
The upper transverse reducing section 9 is positioned in the upper steel clamping piece 7, and the upper longitudinal reducing section 10 is contacted with the bottom of the groove.
The lower shearing flashboard body 2 is provided with a groove, and the lower shearing rubber core 5 is positioned in the groove.
In this embodiment, in another preferred embodiment, the lower shear ram body 2 is provided with a groove, and the lower shear rubber core 5 is located in the groove, so that the lower shear rubber core 5 can be well fixed, and the use stability is ensured.
Example 6
Referring to fig. 1-4, a reducing flashboard comprises an upper shearing flashboard body 1 and a lower shearing flashboard body 2, wherein an upper shearing rubber core 3 and an upper top rubber core 4 are arranged on the upper shearing flashboard body 1, the upper shearing rubber core 3 and the upper top rubber core 4 are all reducing rubber cores, a lower shearing rubber core 5 and a lower top rubber core 6 are arranged on the lower shearing flashboard body 2, the lower shearing rubber core 5 and the lower top rubber core 6 are reducing rubber cores, an upper steel clamping piece 7 for clamping the upper shearing rubber core 3 is fixed at the front end of the upper shearing flashboard body 1, and a lower steel clamping piece 8 for clamping the lower shearing rubber core 5 is fixed at the front end of the lower shearing flashboard body 2.
The upper shearing flashboard body 1 is provided with a groove, and the upper shearing rubber core 3 is positioned in the groove.
The upper shearing rubber core 3 comprises an upper transverse reducing section 9 and an upper longitudinal reducing section 10, and the upper transverse reducing section 9 and the upper longitudinal reducing section 10 are integrally formed.
The upper transverse reducing section 9 is positioned in the upper steel clamping piece 7, and the upper longitudinal reducing section 10 is contacted with the bottom of the groove.
The lower shearing flashboard body 2 is provided with a groove, and the lower shearing rubber core 5 is positioned in the groove.
Still more preferably, the lower shear rubber core 5 includes a lower transverse reducing section 11 and a lower longitudinal reducing section 12, and the lower transverse reducing section 11 and the lower longitudinal reducing section 12 are integrally formed.
The lower transverse reducing section 11 is positioned in the lower steel clamping piece 8, and the lower longitudinal reducing section 12 is contacted with the bottom of the groove.
In this embodiment, the lower shear rubber core 5 includes a lower transverse reducing section 11 and a lower longitudinal reducing section 12, where the lower transverse reducing section 11 and the lower longitudinal reducing section 12 are integrally formed, so that the lower shear rubber core 5 has a simple overall structure and good structural strength.
The lower transverse reducing section 11 is positioned in the lower steel clamping piece 8, and the lower longitudinal reducing section 12 is contacted with the bottom of the groove, so that the lower shearing rubber core 5 can be further and firmly fixed, and the use reliability is ensured.
The working principle of the utility model is as follows:
When the hydraulic cylinder is used, the variable-diameter rubber core and the shearing flashboard form the variable-diameter flashboard, the variable-diameter flashboard is assembled into the flashboard blowout preventer, and the upper shearing flashboard body 1 and the lower shearing flashboard body 2 move in opposite directions under the thrust action of the hydraulic cylinder, so that a drill rod can be sheared and sealed. The transverse reducing sections of the two reducing rubber cores which move in opposite directions are contacted first and then move towards the center of the wellhead continuously, and when the contact ratio of the reducing rubber cores is higher than the sealing well pressure, the sealing of the drill rod is realized. Has good sealing effect and good applicability.
Claims (7)
1. The utility model provides a reducing flashboard, includes upper shearing flashboard body (1) and lower shearing flashboard body (2), its characterized in that: the upper shearing flashboard body (1) is provided with an upper shearing rubber core (3) and an upper top rubber core (4), the upper shearing rubber core (3) and the upper top rubber core (4) are reducing rubber cores, the lower shearing flashboard body (2) is provided with a lower shearing rubber core (5) and a lower top rubber core (6), the lower shearing rubber core (5) and the lower top rubber core (6) are reducing rubber cores, the front end of the upper shearing flashboard body (1) is fixedly provided with an upper steel clamping piece (7) for clamping the upper shearing rubber core (3), and the front end of the lower shearing flashboard body (2) is fixedly provided with a lower steel clamping piece (8) for clamping the lower shearing rubber core (5).
2. The variable diameter gate according to claim 1, wherein: the upper shearing flashboard body (1) is provided with a groove, and the upper shearing rubber core (3) is positioned in the groove.
3. The variable diameter gate according to claim 1, wherein: the upper shearing rubber core (3) comprises an upper transverse reducing section (9) and an upper longitudinal reducing section (10), and the upper transverse reducing section (9) and the upper longitudinal reducing section (10) are integrally formed.
4. A variable diameter gate according to claim 3, wherein: the upper transverse reducing section (9) is positioned in the upper steel clamping piece (7), and the upper longitudinal reducing section (10) is contacted with the bottom of the groove.
5. The variable diameter gate according to claim 1, wherein: the lower shearing flashboard body (2) is provided with a groove, and the lower shearing rubber core (5) is positioned in the groove.
6. The variable diameter gate according to claim 1, wherein: the lower shear rubber core (5) comprises a lower transverse reducing section (11) and a lower longitudinal reducing section (12), and the lower transverse reducing section (11) and the lower longitudinal reducing section (12) are integrally formed.
7. The variable diameter gate according to claim 6, wherein: the lower transverse reducing section (11) is positioned in the lower steel clamping piece (8), and the lower longitudinal reducing section (12) is contacted with the bottom of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323270894.XU CN221096473U (en) | 2023-12-01 | 2023-12-01 | Reducing flashboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323270894.XU CN221096473U (en) | 2023-12-01 | 2023-12-01 | Reducing flashboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221096473U true CN221096473U (en) | 2024-06-07 |
Family
ID=91304247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323270894.XU Active CN221096473U (en) | 2023-12-01 | 2023-12-01 | Reducing flashboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221096473U (en) |
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2023
- 2023-12-01 CN CN202323270894.XU patent/CN221096473U/en active Active
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