CN114856483B - Electric ram blowout preventer - Google Patents
Electric ram blowout preventer Download PDFInfo
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- CN114856483B CN114856483B CN202210627483.2A CN202210627483A CN114856483B CN 114856483 B CN114856483 B CN 114856483B CN 202210627483 A CN202210627483 A CN 202210627483A CN 114856483 B CN114856483 B CN 114856483B
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- blowout preventer
- explosion
- shaft
- flashboard
- butt joint
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/064—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers specially adapted for underwater well heads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention discloses an electric ram blowout preventer, which relates to the technical field of drilling and solves the problems of more equipment elements and inaccurate control of the conventional three-ram blowout preventer, and comprises a blowout preventer body, wherein a through hole which penetrates through the blowout preventer body up and down is formed in the blowout preventer body, gate cavities for placing rams are formed in two sides of the through hole, the rams are movably arranged in the gate cavities, and the gate cavities penetrate through the side wall of the blowout preventer body; the flashboards on the two sides are mutually clasped, and the clasped contact surfaces of the flashboards on the two sides are provided with clasping structures; the electric ram blowout preventer is arranged on a wellhead and is matched with an electric annular blowout preventer for use. Compared with a hydraulic ram blowout preventer, the hydraulic ram blowout preventer has the advantages that the hydraulic elements are replaced by the electric actuator, and a hydraulic power station and a control hose are omitted. The structure of the ram blowout preventer can be simplified, the overall dimension of the ram blowout preventer is reduced, the number of parts and the weight are reduced, and the control is more accurate.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to the technical field of electric ram blowout preventers for land and underwater drilling, well workover and pressurized operation.
Background
Along with the development of petroleum and natural gas exploration and development towards deep wells and ultra-deep wells, high-pressure and ultrahigh-pressure well control equipment is used more and more, and meanwhile, higher requirements on the light weight and safety of a well control system are also provided. Ram blowout preventers are one of the important components in well control systems. It is an essential device for sealing, controlling and monitoring the pressure at the mouth of oil and gas wells, which is an important barrier against blowout, usually in drilling, workover and gas well operations under pressure.
The conventional ram blowout preventer adopts hydraulic control to push a piston, a ram shaft and a ram to perform opening and closing actions, so that the aims of sealing a wellhead and controlling the pressure of the wellhead are fulfilled.
The conventional hydraulically controlled ram blowout preventer has the defects that due to the fact that sealing elements are in failure, hydraulic media leak and the like, the abnormal production shutdown maintenance time of drilling equipment is long, a set of hydraulic control device and a large number of control pipelines need to be matched for the blowout preventer for use, and the blowout preventer is also provided with a set of complex hydraulic driving cylinder assembly, so that the whole system has the defects of multiple equipment elements, inaccurate control, complex structure, large volume, multiple leakage points, troublesome replacement and maintenance accessories and the like. With the increase of the development of deep oil and gas resources, the high-pressure and large-drift-diameter blowout preventers are used more and more, the well control safety risk is increased more and more, and the requirements on the well control risk and the environmental protection are also stricter. Light weight and automation of well control systems are the future development direction. The electric blowout preventer in the related art of the prior publication is only suitable for low pressure oil well operation conditions.
Disclosure of Invention
The invention aims to solve the problems of multiple elements and inaccurate control of the conventional three-ram blowout preventer, and provides an electric ram blowout preventer to solve the technical problems.
The invention aims to achieve the aim, and provides an electric ram blowout preventer which comprises a blowout preventer body, wherein a through hole which penetrates through the blowout preventer body up and down is formed in the blowout preventer body, both sides of the through hole are provided with gate cavities for placing rams, the rams are movably arranged in the gate cavities, and the gate cavities penetrate through the side wall of the blowout preventer body; the flashboards on the two sides are mutually embraced, and the contact surfaces of the embraced flashboards on the two sides are provided with embracing structures;
one end of the gate cavity, which is positioned on the outer wall of the blowout preventer body, is sealed by a middle flange; a flashboard shaft for driving the flashboard to move towards the through hole is arranged on the flashboard, the flashboard shaft penetrates through the middle flange, the flashboard is connected with the middle flange in a sliding manner, an explosion-proof shell is arranged on the middle flange, a driving motor is arranged in the explosion-proof shell, an output shaft of the driving motor is connected with a driving gear of a planetary gear, a driven gear of the planetary gear is connected with a transmission lead screw, and the end part of the transmission lead screw is connected with a bearing seat arranged on the middle flange;
the transmission screw rod is connected with a transmission nut in a threaded manner, the transmission nut is installed on a connecting plate which pushes the flashboard shaft to move, the connecting plate is fixedly connected with the flashboard shaft, the planetary gear is installed at the end part of the supporting sleeve, the connecting plate, the transmission screw rod, the bearing seat and the flashboard shaft are all arranged in the supporting sleeve, and the driving motor is installed between the supporting sleeve and the explosion-proof shell.
Furthermore, the embracing structure comprises four butting columns arranged on the contact surface of the flashboard at one side, the butting columns are of a conical table structure, four butting grooves in socket fit with the butting columns are formed in the contact surface of the flashboard at the other side, and pressure sensors are arranged at the bottoms of the four butting grooves;
when the flashboards on the two sides are in butt joint, the four butt joint columns are respectively inserted into the corresponding butt joint grooves, the pressure sensors in the butt joint grooves respectively detect the pressure F applied to the butt joint columns, the pressure F applied to the butt joint columns is differed with a pressure threshold value F0 to obtain a pressure difference value F1= F0-F, the difference value F1 is compared with a difference threshold value F2, if the difference value F1 corresponding to one of the butt joint columns is larger than the difference threshold value F2, the butt joint of the flashboards on the two sides is determined to be not tight, otherwise, the butt joint of the flashboards on the two sides is determined to be tight, and liquid leakage cannot occur.
Furthermore, four transmission screw rods are arranged around the flashboard shaft, the four transmission screw rods are respectively connected with driven gears of the planetary gears, and four transmission nuts which are respectively in threaded connection with the four transmission screw rods are respectively arranged on the connecting plate; the connecting plate is provided with reinforcing rib plates in a crossed manner, and the four transmission nuts are respectively arranged in gaps between the reinforcing rib plates in the crossed manner.
Furthermore, the end part of the explosion-proof shell is packaged through a cover plate, a step matched with the explosion-proof shell is arranged on the cover plate, a manual locking rod is arranged at the other end of the output shaft of the driving motor, the manual locking rod penetrates through the cover plate to extend out of the explosion-proof shell, and the manual locking rod is rotatably connected with the explosion-proof shell; the end part of the manual locking rod is provided with a square column; the cover plate is provided with a plurality of mounting holes for mounting the power interface seat, the power interface seat is electrically connected with the driving motor through a cable, and a power sealing ring is arranged between the power interface seat and the mounting holes.
Furthermore, the bottom of the explosion-proof shell is fixed on the intermediate flange through an L-shaped connecting ring, a supporting ring is clamped between the inside of the explosion-proof shell and the outer wall of the supporting sleeve, the supporting ring is arranged on the intermediate flange, and at least one layer of first D-shaped sealing ring is arranged between the supporting ring and the explosion-proof shell.
Furthermore, the end part of the flashboard shaft is provided with a pin shaft, and the connecting plate is provided with a connecting sleeve which is in clamping fit with the pin shaft.
Furthermore, a second D-shaped sealing ring is arranged at one end, close to the outer side, between the middle flange and the flashboard shaft, a flashboard shaft sealing ring is arranged at one end, close to the inner side, between the middle flange and the flashboard shaft, a lubricating oil absorption ring for absorbing lubricating oil is arranged between the flashboard shaft sealing ring and the second D-shaped sealing ring, and the lubricating oil absorption ring is made of wear-resistant foam materials; the side surface of the middle flange is provided with an oil supply channel corresponding to the position of the lubricating oil absorption ring, and the oil supply channel supplies lubricating oil for the lubricating oil absorption ring in a clearance mode.
Further, a side door sealing ring is arranged between the contact surface of the middle flange and the blowout preventer body.
The invention has the following beneficial effects:
(1) The electric ram blowout preventer is arranged on a wellhead and is matched with the electric annular blowout preventer for use, compared with a hydraulic ram blowout preventer, the electric ram blowout preventer uses the electric actuator to replace a hydraulic element, a hydraulic power station and a control hose are omitted, the structure of the ram blowout preventer can be simplified, the overall dimension of the ram blowout preventer is reduced, the number of parts and the weight are reduced, and the control is more accurate;
(2) The invention replaces the hydraulic component control with the driving motor, can also dispel the hydraulic oil because of the hydraulic component trouble leaks and pollutes the environment, and the sealing member trouble causes the unproductive down time of the drilling equipment, in addition, the electric executive drive is simpler and more reliable than the hydraulic component, has provided the true maintenance-free operation, and is difficult to receive and lacks the influence that the maintenance breaks down, the trouble of the internal component only influences the single actuator, thus carry on troubleshooting and maintenance more easily;
(3) In the execution process of the electric ram blowout preventer, the absolute sealing working environment of the whole ram blowout preventer is ensured through the multi-directional sealing structure, the normal work of a driving motor is not influenced, meanwhile, the sealing performance detection is realized when the rams on the two sides are tightly held, the fault early warning before blowout can be realized, and the phenomena that the rams are loosened and safety accidents occur due to the faults of devices inside the ram blowout preventer are avoided.
Drawings
FIG. 1 is a schematic diagram of an electric ram blowout preventer of the present invention;
fig. 2 is a structural view of the both-side shutter embracing.
Reference numerals are as follows: 1. the blowout preventer comprises a blowout preventer body, 2, a gate plate, 3, a middle flange, 4, a side door sealing ring, 5, a gate plate shaft sealing ring, 6, a first screw, 7, a side door bolt, 8, a supporting sleeve, 9, a transmission nut, 10, a connecting plate, 11, a planetary gear, 12, a driving motor, 13, a second screw, 14, a third screw, 15, a power interface seat, 16, a manual locking rod, 17, a cover plate, 18, a power sealing ring, 19, a cable, 20, a fourth screw, 21, a fifth screw, 22, a pin shaft, 23, a transmission screw rod, 24, a gate plate shaft, 25, a bearing seat, 26, a first D-shaped sealing ring, 27, a second D-shaped sealing ring, 28, a plastic sealing ring, 29, an explosion-proof shell, 30, a contact surface, 31 and a butt-joint column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1 and 2, the electric ram 2 blowout preventer for land and underwater drilling, workover and pressurized operation in the scheme comprises a blowout preventer body 1, wherein a through hole which penetrates through the blowout preventer body 1 up and down is formed in the blowout preventer body, the electric ram is installed on a wellhead through the through hole, the wellhead is plugged by using a gate, gate cavities for placing the ram 2 are formed in two sides of the through hole, the ram 2 is movably arranged in the gate cavities, and the gate cavities penetrate through the side wall of the blowout preventer body 1; the two side gate plates 2 are mutually embraced, and the contact surfaces 30 embraced by the two side gate plates 2 are provided with embracing structures;
in this embodiment, the embracing structure includes four docking posts 31 arranged on the contact surface 30 of the gate plate 2 on one side, the docking posts 31 are in a conical table structure, four docking grooves in socket fit with the docking posts 31 are formed on the contact surface 30 of the gate plate 2 on the other side, and pressure sensors are arranged at the bottoms of the four docking grooves;
when the flashboards 2 on the two sides are in butt joint, the four butting columns 31 are respectively inserted into the corresponding butting grooves, the pressure sensors in the butting grooves respectively detect the pressure F applied to the butting columns 31, the pressure F applied to the butting columns 31 is differed from a pressure threshold value F0, the pressure threshold value F0 is the pressure applied to the butting columns 31 when the flashboards 2 on the two sides are tightly embraced under an ideal state, a pressure difference value F1= F0-F is obtained, the difference value F1 is compared with a difference threshold value F2, if the difference value F1 corresponding to one butting column 31 is greater than the difference threshold value F2, the flashboards 2 on the two sides are not in butt joint, the fact that the flashboards 2 on the two sides are loosened or are about to be loosened is proved, a worker is reminded of needing to detect, and otherwise, the fact that the flashboards 2 on the two sides are in butt joint tightly is judged, and liquid leakage does not occur.
One end of the gate cavity, which is positioned on the outer wall of the blowout preventer body 1, is sealed by a middle flange 3, and the middle flange 3 is installed on the blowout preventer body 1 through a side door bolt 7; the flashboard 2 is provided with a flashboard shaft 24 for driving the flashboard 2 to move towards the through hole, the flashboard shaft 24 penetrates through the intermediate flange 3, the flashboard 2 is in sliding connection with the intermediate flange 3, the intermediate flange 3 is provided with an explosion-proof shell 29, a driving motor 12 is arranged in the explosion-proof shell 29, an output shaft of the driving motor 12 is connected with a driving gear of the planetary gear 11, a driven gear of the planetary gear 11 is connected with a transmission screw rod 23, and the end part of the transmission screw rod 23 is connected with a bearing seat 25 arranged on the intermediate flange 3.
Threaded connection has drive nut 9 on the transmission lead screw 23, drive nut 9 is installed on the connecting plate 10 that promotes flashboard axle 24 and carry out the removal through fifth screw 21, connecting plate 10 and flashboard axle 24 fixed connection, planetary gear 11 is installed at the tip of support sleeve 8, connecting plate 10, transmission lead screw 23, bearing frame 25 and flashboard axle 24 all set up in support sleeve 8, driving motor 12 is installed between support cover and explosion-proof housing 29, and driving motor 12 installs the tip at support sleeve 8 through fourth screw 20.
Example 2
As shown in fig. 1 and fig. 2, four driving screw rods 23 are arranged around the shutter shaft 24 of the embodiment, the four driving screw rods 23 are respectively connected with the driven gears of the planetary gears 11, and four driving nuts 9 respectively connected with the four driving screw rods 23 through threads are respectively arranged on the connecting plate 10; the connecting plate 10 is provided with reinforcing rib plates in a cross shape, and the four transmission nuts 9 are respectively arranged in gaps between the cross reinforcing rib plates.
Example 3
As shown in fig. 1 and fig. 2, the end of the explosion-proof housing 29 of this embodiment is enclosed by a cover plate 17, the cover plate 17 is provided with a step which is matched with the explosion-proof housing 29, the cover plate 17 is fixed on the explosion-proof housing 29 by a second screw 13, the other end of the output shaft of the driving motor 12 is provided with a manual locking lever 16, the manual locking lever 16 penetrates through the cover plate 17 and extends out of the explosion-proof housing 29, and the manual locking lever 16 is rotatably connected with the explosion-proof housing 29; the end part of the manual locking rod 16 is provided with a square column; the cover plate 17 is provided with a plurality of mounting holes for mounting the power interface seat 15, the power interface seat 15 is mounted on the mounting holes through third screws 14, the power interface seat 15 is electrically connected with the driving motor 12 through a cable 19, and a power sealing ring 18 is arranged between the power interface seat 15 and the mounting holes.
Example 4
As shown in fig. 1 and 2, the bottom of the explosion-proof housing 29 of this embodiment is fixed on the intermediate flange 3 through an L-shaped connecting ring, the L-shaped connecting ring is mounted on the intermediate flange 3 through a first screw 6, a support ring is clamped between the inside of the explosion-proof housing 29 and the outer wall of the support sleeve 8, the support ring is arranged on the intermediate flange 3, and at least one layer of first D-shaped sealing ring is arranged between the support ring and the explosion-proof housing 29.
Example 5
As shown in fig. 1 and 2, the end of the shutter shaft 24 of this embodiment is provided with a pin 22, and the connecting plate 10 is provided with a connecting sleeve which is snap-fitted with the pin 22.
Example 6
As shown in fig. 1 and 2, in this embodiment, a second D-shaped sealing ring is disposed at an end close to the outer side between the intermediate flange 3 and the shutter shaft 24, a shutter shaft sealing ring 5 is disposed at an end close to the inner side between the intermediate flange 3 and the shutter shaft 24, a lubricating oil absorbing ring for absorbing lubricating oil is disposed between the shutter shaft sealing ring 5 and the second D-shaped sealing ring, the lubricating oil absorbing ring is made of wear-resistant foam, and a plastic sealing ring 28 is disposed between the shutter shaft sealing ring 5 and the lubricating oil absorbing ring; the side of the middle flange 3 is provided with an oil supply channel corresponding to the position of the lubricating oil absorption ring, and the oil supply channel supplies lubricating oil for the lubricating oil absorption ring in a clearance manner.
Example 7
As shown in fig. 1 and 2, this embodiment has a side door seal 4 between the intermediate flange 3 and the contact surface 30 of the blowout preventer body 1.
The working principle of the invention is as follows: the two side gate plates 2 of the embodiment are driven by the driving motor 12 to be embraced and used for embracing a pipe column tightly. The flashboard shaft 24 is connected with the connecting plate 10 through a pin shaft 22, the transmission nut 9 is installed on the connecting plate 10 through a fifth screw 21, and the transmission screw 23 penetrates through the transmission nut 9 and then is installed on the middle flange 3 through the first screw 6 together with the bearing seat 25. The entire drive assembly of the drive motor 12 is mounted on the intermediate flange 3 by the fourth screws 20 together with the support sleeve 8. The explosion-proof housing 29, together with the second screw 13, the cover 17 and the first D-ring 26, shields the entire drive system from the environment. All internal actuators operate under the protection of an explosion proof housing 29. An external power supply is connected with the driving motor 12 through the third screw 14, the power interface seat 15 and the cable 19, and the sealing ring is used for isolating the external environment.
When the system is electrified, the torque output by the driving motor 12 is transferred to a planetary gear 11, so that the driving screw rod 23 is driven to rotate, and the screw rod rotates to drive the connecting plate 10 and the ram shaft 24 to do linear motion together, so that the ram 2 blowout preventer is closed or opened. When the system is powered off due to emergency, the transmission screw rod 23 has a self-locking function, and the flashboard 2 can be ensured to be kept in a closed state. The gate 2 can also be locked by manual operation of the system by a manual locking lever 16.
The electric ram 2 blowout preventer is arranged on a wellhead and is matched with an electric annular blowout preventer for use. Compared with a hydraulic ram 2 blowout preventer, the hydraulic component of the blowout preventer is replaced by the electric actuator, so that a hydraulic power station and a control hose are omitted. The structure of the ram 2 blowout preventer can be simplified, the overall dimension of the ram 2 blowout preventer is reduced, the number of parts and the weight are reduced, and the control is more accurate. The use of the drive motor 12 in place of the hydraulic element controls also eliminates the environmental pollution of hydraulic oil leaking due to hydraulic element failure and non-productive down time of the drilling equipment due to seal failure. Furthermore, electrically actuated drives are simpler and more reliable than hydraulic components, provide true maintenance-free operation, and are less susceptible to failure due to lack of maintenance. Failure of an internal element affects only a single actuator, making troubleshooting and repair easier.
In the execution process, the absolute sealing working environment of the whole ram 2 blowout preventer is ensured through a multi-directional sealing structure, and the normal work of the driving motor 12 is not influenced. Meanwhile, the sealing performance detection is carried out when the flashboards 2 on the two sides are tightly held, so that the fault early warning before blowout can be realized, and the safety accident caused by the looseness of the flashboards 2 due to the fault of the devices inside the flashboard 2 blowout preventer is avoided.
Claims (5)
1. The electric ram blowout preventer is characterized by comprising a blowout preventer body, wherein the blowout preventer body is provided with a through hole which penetrates through the blowout preventer body up and down, both sides of the through hole are provided with gate cavities for placing rams, the rams are movably arranged in the gate cavities, and the gate cavities penetrate through the side wall of the blowout preventer body; the flashboards on the two sides are mutually embraced, and the embraced contact surfaces of the flashboards on the two sides are provided with embraced structures;
one end of the gate cavity, which is positioned on the outer wall of the blowout preventer body, is sealed by a middle flange; the gate plate is provided with a gate plate shaft for driving the gate plate to move towards the through hole, the gate plate shaft penetrates through the middle flange, the gate plate is connected with the middle flange in a sliding mode, the middle flange is provided with an explosion-proof shell, a driving motor is arranged in the explosion-proof shell, an output shaft of the driving motor is connected with a driving gear of a planetary gear, a driven gear of the planetary gear is connected with a transmission screw rod, and the end portion of the transmission screw rod is connected with a bearing seat arranged on the middle flange;
the transmission screw rod is in threaded connection with a transmission nut, the transmission nut is mounted on a connecting plate for pushing the flashboard shaft to move, the connecting plate is fixedly connected with the flashboard shaft, the planetary gear is mounted at the end of the supporting sleeve, the connecting plate, the transmission screw rod, the bearing seat and the flashboard shaft are all arranged in the supporting sleeve, and the driving motor is mounted between the supporting sleeve and the explosion-proof shell;
the cohesive structure comprises four butting columns arranged on the contact surface of the flashboard on one side, the butting columns are of a conical table structure, four butting grooves in socket fit with the butting columns are formed in the contact surface of the flashboard on the other side, and pressure sensors are arranged at the bottoms of the four butting grooves;
when the flashboards on the two sides are in butt joint, the four butt joint columns are respectively inserted into the corresponding butt joint grooves, the pressure sensors in the butt joint grooves respectively detect the pressure F applied to the butt joint columns, the pressure F applied to the butt joint columns is subtracted from a pressure threshold value F0 to obtain a pressure difference value F1= F0-F, the difference value F1 is compared with a difference threshold value F2, if the difference value F1 corresponding to one of the butt joint columns is larger than the difference threshold value F2, the two flashboards on the two sides are not in butt joint tightly, otherwise, the two flashboards on the two sides are in butt joint tightly, and liquid leakage cannot occur;
the end part of the explosion-proof shell is packaged through a cover plate, a step matched with the explosion-proof shell is arranged on the cover plate, a manual locking rod is arranged at the other end of the output shaft of the driving motor, the manual locking rod penetrates through the cover plate to extend out of the explosion-proof shell, and the manual locking rod is rotatably connected with the explosion-proof shell; the end part of the manual locking rod is provided with a square column; the cover plate is provided with a plurality of mounting holes for mounting the power interface seat, the power interface seat is electrically connected with the driving motor through a cable, and a power sealing ring is arranged between the power interface seat and the mounting holes;
a second D-shaped sealing ring is arranged at one end, close to the outer side, between the middle flange and the flashboard shaft, a flashboard shaft sealing ring is arranged at one end, close to the inner side, between the middle flange and the flashboard shaft, a lubricating oil absorption ring for absorbing lubricating oil is arranged between the flashboard shaft sealing ring and the second D-shaped sealing ring, and the lubricating oil absorption ring is made of wear-resistant foam materials; and an oil supply channel corresponding to the lubricating oil absorption ring is arranged on the side surface of the middle flange and supplies lubricating oil for the lubricating oil absorption ring in a clearance manner.
2. The electric ram blowout preventer according to claim 1, wherein four driving screws are arranged around the ram shaft, the four driving screws are respectively connected with driven gears of the planetary gears, and four driving nuts respectively in threaded connection with the four driving screws are arranged on the connecting plate; the four transmission nuts are respectively arranged in gaps among the crossed reinforcing rib plates.
3. The electric ram blowout preventer according to claim 1, wherein the bottom of the explosion-proof housing is fixed on the intermediate flange through an L-shaped connecting ring, a support ring is clamped between the inside of the explosion-proof housing and the outer wall of the support sleeve, the support ring is arranged on the intermediate flange, and at least one layer of first D-shaped sealing ring is arranged between the support ring and the explosion-proof housing.
4. The electric ram blowout preventer of claim 1, wherein the ram shaft is provided with a pin at an end thereof, and the connecting plate is provided with a connecting sleeve which is in snap fit with the pin.
5. The electric ram blowout preventer of claim 1, wherein there are side door seals between the intermediate flange and the contact surface of the blowout preventer body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210627483.2A CN114856483B (en) | 2022-06-02 | 2022-06-02 | Electric ram blowout preventer |
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| CN202210627483.2A CN114856483B (en) | 2022-06-02 | 2022-06-02 | Electric ram blowout preventer |
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| CN114856483A CN114856483A (en) | 2022-08-05 |
| CN114856483B true CN114856483B (en) | 2023-03-28 |
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| CN117072107B (en) * | 2023-10-16 | 2024-01-26 | 盐城市佳鑫石化机械制造有限公司 | Blowout preventer for oil well construction |
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| CN101571042B (en) * | 2009-06-04 | 2012-07-25 | 付吉平 | Continuous remote telemetering method for liquid levels of oil wells |
| CN102409994A (en) * | 2011-11-14 | 2012-04-11 | 中国石油大学(华东) | Ram blowout preventer based on linear motor |
| NO336045B1 (en) * | 2012-02-10 | 2015-04-27 | Electrical Subsea & Drilling As | Device and method of power actuator for dive use in petroleum recovery |
| WO2015126562A1 (en) * | 2014-02-24 | 2015-08-27 | Hydril USA Distribution LLC | Blowout preventer system having position and pressure sensing device and related methods |
| CN104060963A (en) * | 2014-06-05 | 2014-09-24 | 宝鸡石油机械有限责任公司 | Integrated blowout preventer for well repair and drilling |
| CN104389514B (en) * | 2014-11-15 | 2016-08-31 | 吉林大学 | The all-hydraulic top-drive drilling of high speed high pulling torque |
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| US20210342506A1 (en) * | 2020-05-04 | 2021-11-04 | Schlumberger Technology Corporation | Computer-aided engineering toolkit for simulated testing of pressure-controlling component designs |
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