CN111932745B - Blowout preventer assembly control cabinet and opening method - Google Patents
Blowout preventer assembly control cabinet and opening method Download PDFInfo
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- CN111932745B CN111932745B CN202010826408.XA CN202010826408A CN111932745B CN 111932745 B CN111932745 B CN 111932745B CN 202010826408 A CN202010826408 A CN 202010826408A CN 111932745 B CN111932745 B CN 111932745B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 15
- 239000011888 foil Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- General Physics & Mathematics (AREA)
- Auxiliary Devices For Machine Tools (AREA)
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Abstract
The invention discloses a blowout preventer assembly control cabinet and an opening method thereof. The invention aims to solve the problem of instability caused by that a blowout preventer stack control cabinet is completely unlocked by manpower in the prior art, and achieve the purposes of reducing uncertain factor interference, automatically unlocking when needed and ensuring stable control of the blowout preventer stack.
Description
Technical Field
The invention relates to the field of wellhead blowout preventers, in particular to a blowout preventer assembly control cabinet and an opening method.
Background
The wellhead blowout preventer is used for closing the wellhead in the operation processes of oil testing, well repairing, well completion and the like to prevent blowout accidents, integrates the full sealing function and the half sealing function into a whole, has the characteristics of simple structure, easy operation, high pressure resistance and the like, and is a safe wellhead sealing device for preventing blowout commonly used in oil fields. The existing wellhead blowout prevention system is generally a blowout preventer group and comprises three combinations of an annular (universal) blowout preventer, a semi-seal ram blowout preventer and a fully-seal (shear) ram blowout preventer; wherein, the full seal and the half seal can be a single gate plate or a double gate plate, which is adaptively selected according to the prediction of the underground stratum pressure of the well in the early geological data. Blowout preventer stacks are typically hydraulically actuated with a hydraulic station located near the wellhead. At the well site, the following three control modes are available for the blowout preventer stack: 1) the control cabinet in the driller room is used for controlling; 2) the control cabinet in the central control room is used for controlling; 3) operating a hydraulic station at a wellhead for control; the coexistence of the three control modes is one of important means for ensuring the safety of a well site. Wherein, the switch board in the driller's room is used for the driller to close the well fast under accident conditions such as overflow, kick, blowout, is the most important line of defense, because compare in the first side supervision or managers in the central control room, the driller is located first line, straight face well head all the time, to the people that the condition is most known in the pit, in case there is the abnormal conditions in the pit, the driller can be through the change of parameter in the pit, to the most audio-visual understanding such as control of tourist bus is felt. Therefore, the driller is always the first person in charge of well shut-in no matter what kind of oil field drilling process is at home and abroad.
Meanwhile, the driller room in the working state is a relatively closed space, the door of the driller room facing the direction of the wellhead of the drilling platform must be an airtight door, and the escape door equipped in the driller room is generally positioned on one side departing from the wellhead of the drilling platform, so that the safety of the driller is protected, and the safety of the control cabinet of the blowout preventer stack in the driller room is also protected. The control cabinet of blowout preventer group in the driller's room is a square cabinet body, the control assembly of each blowout preventer is located this control cabinet, and the front of this cabinet body is for taking the lock glass door, among all well head personnel, only the driller just has the lock key of this glass door, just has the authority to open this glass door and operates control assembly, can effectively avoid driller or all the other personnel to the maloperation of control cabinet like this, consequently the driller's room often has all the other personnel to get into and carry out work, like directional well engineer, mud engineer, well cementation engineer all kinds of practice personnel etc.. In addition, in the prior art, a glass door is used as a cabinet door of a control cabinet of a blowout preventer stack, the transparent characteristic of glass is utilized to facilitate observation, and the problem that when a sudden well kick or a blowout is encountered and a driller is temporarily absent or a door lock key cannot be found in a warehouse is also considered, any wellhead personnel can break the door lock by using tools such as an iron hammer to shut down the door in an emergency, and an operable space is fully reserved for the sudden situation.
However, in the prior art, the control cabinet of the blowout preventer stack is completely unlocked by manpower, and the conditions that a key cannot be found in confusion and the unlocking cannot be stably performed always exist under emergency conditions; in addition, in the prior art, glass is used as a cabinet door, the safety cannot be guaranteed if the thickness of the glass is small, and the problem that the glass is too large in weight and difficult to smash is caused if the thickness of the glass is large, so that the safety and the stability cannot be balanced all the time.
Disclosure of Invention
The invention provides a blowout preventer assembly control cabinet and an opening method, and aims to solve the problem of instability caused by the fact that a blowout preventer stack control cabinet is completely unlocked manually in the prior art, reduce uncertain factor interference, automatically unlock when needed and ensure stable control over a blowout preventer stack.
The invention is realized by the following technical scheme:
a blowout preventer assembly control cabinet comprises a cabinet body with an open front face, a control assembly located in the cabinet body and a cabinet door matched with the cabinet body, wherein the cabinet door is controlled by an electric control lock to be locked, the electric control lock is in signal connection with a controller, and the controller acquires overflow amount of a well mouth in real time.
Aiming at the problem of instability caused by the fact that a blowout preventer stack control cabinet is completely unlocked manually in the prior art, the invention firstly provides a blowout preventer assembly control cabinet, wherein a control assembly is still positioned in a cabinet body and used for controlling a blowout preventer stack. The cabinet door is in the cabinet body openly, plays the cabinet body of closing at ordinary times, avoids the mistake to bump the risk of blowout preventer stack switch. Different from prior art, the cabinet door is locked by the control of automatically controlled lock in this application, and the automatically controlled lock is controlled by the controller, and the controller is obtaining well head overflow volume again in real time. Wherein, the data of well head overflow volume directly read the logging parameter can. This application sets up the safe threshold value of overflow volume in the controller in advance when using, and the well head overflow volume is acquireed in real time to the controller to compare with safe threshold value: when the actual overflow amount is larger than the safety threshold value, the controller controls the electric control lock to unlock, so that the cabinet door is automatically unlocked. Although the blowout preventer group control cabinet is simple in structure, the problem that the blowout preventer group control cabinet in a driller room in the prior art is completely unlocked manually by manpower is solved, the problems that the driller is temporarily confused or the driller is just in a rest and is not on a drilling floor, the cabinet door is difficult to unlock and the blowout preventer is difficult to quickly close under sudden well kick and blowout are solved, the stability and the reliability of well closing under sudden conditions are obviously improved, the safety risk that the driller cannot find a key in confusion is obviously reduced, the well closing at the first time is favorably ensured, and the safety of a well site is fully ensured. In addition, the controller only controls the electric control lock to unlock, only the cabinet door is not locked after unlocking, the cabinet door is not automatically opened, the cabinet door is still in a closed state at the moment, or the cabinet door is manually pulled open to operate the control assembly, so that misoperation risks cannot be caused in a short period, and the blowout preventer is possibly closed to ensure the personal safety of field operating personnel at any time when the overflow quantity exceeds the safety threshold value in a high-risk state at a well site.
Further, the overflow amount is equal to wellhead return discharge amount-mud pump output discharge amount. The wellhead flowback displacement is preferably monitored in a flow reversing channel.
Furthermore, the cabinet door is made of acrylic plates. In the prior art, glass is used as a cabinet door, the safety cannot be guaranteed if the thickness of the glass is small, and the problem that the glass is too large in weight and difficult to smash is caused if the thickness of the glass is large, so that the safety and the stability cannot be balanced all the time. Therefore, the colorless and transparent acrylic plate is used as the cabinet door material, compared with a glass material, the transparent cabinet door has better light transmittance, clearer sight line and obviously reduced density, so that the acrylic plate with thicker thickness can be used on the premise of ensuring lighter weight, and the balance between the safety and the stability of the cabinet door is favorably realized.
Further, a frame and a first driving piece for driving the frame to move towards the front open end of the cabinet body are arranged in the cabinet body; the outer edge of the front surface of the frame is provided with a circle of heating device, and the controller is also used for controlling the first driving piece and the heating device. During the further analysis and research process of the invention, the following results are obtained by the inventor: although there are benefits when the acrylic plate is used as the cabinet door, for the control cabinet in the driller's house, there is a disadvantage that it is difficult to break it by force using a tool such as an iron hammer in an emergency, so that once the electric control lock fails and a corresponding key cannot be found in a hurry, the safety may be reduced. To overcome the above-mentioned drawbacks, the present invention is continuously optimized and improved by my parties. In particular, we have a movable frame inside the cabinet, the shape of the frame preferably conforming to the cabinet. And the frame is driven by the first driving piece to move towards the front open end of the cabinet body. The outer edge of the front side of the frame is provided with a circle of heating device, and the controller can control the starting of the first driving piece and the heating device. When meeting with emergency and needing to destroy the cabinet door by force, the driller only needs to give a control signal for heating device starts, heating device rapid heating up, move to cabinet door direction by first driving piece drive frame simultaneously, when the cabinet door is kept up to the frame, heating device and the cabinet door contact of ya keli material, make the cabinet door be the melting state, again along with the promotion of first driving piece to the frame, cut out a square region with the cabinet door gradually, cut this square region completely until, outwards break away from under the promotion of first driving piece. The cabinet door is made of acrylic materials and is forcedly damaged in a hot melting mode, so that the control assembly in the cabinet body can be operated under the special working condition that an electric control lock fails and a key cannot be found quickly, and the safety and the stability of the cabinet door using the acrylic plate as the control cabinet of the blowout preventer stack are obviously improved.
Furthermore, the frame openly sets up the round recess, sets up foil, second driving piece in the recess, the second driving piece is used for driving the foil and stretches out to the recess outward. The recess end to end sets up in the frame openly, that is the frame is towards the one side at cabinet door place direction promptly. So that the metal sheet extends outwards towards the direction of the cabinet door. The second driving piece is positioned at the bottom of the groove and used for driving the metal sheet to extend out of the groove to move towards the direction of the cabinet door. Promote foil through the second driving piece in this scheme for foil also is used in on the cabinet door, cuts the cabinet door by the foil cooperation at the in-process of heating device melting cabinet door, is favorable to the quick whole cabinet door that opens with the cabinet door. Preferably, the inner side and the outer side of the groove are respectively provided with a heating device which is connected end to end, so that the cabinet doors corresponding to the two sides of the metal sheet are in a molten state, and the cabinet door part opposite to the metal sheet is softer and is extremely easy to directly cut. Simultaneously, the heating device also can heat the foil simultaneously in the heating process, and the heated foil not only has the cutting function but also has the hot melting function to the acrylic plate, so that the acrylic plate breaking effect is better.
Furthermore, the heating device is a heating resistance wire or a high-temperature electric heating film which is positioned outside the groove. The heating device is positioned outside the groove, namely the groove is positioned inside the end-to-end square frames formed by the heating device. The heating device is a heating resistance wire, and the effects of quick heating and quick temperature rise are realized by selecting a resistance wire with high resistance value and matching with the application of high voltage and high current. The heating device can also be a high-temperature electric heating film, and the high-temperature electric heating film is in the prior art, can rapidly heat up and can also meet the requirements of use in the invention.
Furthermore, the heating device comprises a plurality of positive electrodes and negative electrodes which are arranged on two opposite sides of the groove, and the positive electrodes correspond to the negative electrodes one to one. The positive electrode and the negative electrode are arranged on two opposite sides of the groove, when the heating device is started, namely, the metal sheet is instantaneously acted in a continuous discharging mode between the positive electrode and the negative electrode, so that the temperature of the metal sheet is instantaneously raised, and the effect of breaking the cabinet door to close the well as soon as possible is achieved.
A blowout preventer assembly control cabinet opening method comprises the following steps: setting an overflow threshold value, and monitoring the overflow quantity in real time;
when normal well drilling and completion operation is carried out, a cabinet door of a cabinet body of the control cabinet is locked by using an electric control lock, wherein the cabinet door is made of an acrylic plate;
and when the overflow quantity is larger than the overflow threshold value, the electric control lock is automatically unlocked.
Further, when the electric control lock cannot be unlocked due to a kick or blowout, the frame in the cabinet body is driven by the first driving piece to move towards the open end of the front face of the cabinet body, meanwhile, the heating device on the outer edge of the front face of the frame is started, and the acrylic plate is melted by the heating device.
Further, the melting method of the acrylic plate comprises the following steps:
the first driving piece drives the surface of the frame to be attached to the inner side of the cabinet door, the heating resistance wire continuously heats, and meanwhile, the second driving piece drives the metal sheet to move towards the direction of the cabinet door and crack the acrylic plate;
or the first driving piece drives the surface of the frame to be attached to the inner side of the cabinet door, the plurality of positive electrodes and the plurality of negative electrodes on the two opposite sides of the groove are discharged, so that the metal sheet is quickly heated by clicking, and meanwhile, the second driving piece drives the metal sheet to move towards the direction of the cabinet door and crack the acrylic plate.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the blowout preventer assembly control cabinet and the opening method solve the problem that the blowout preventer assembly control cabinet in a driller room in the prior art is completely unlocked manually by a worker through a simple structure, avoid the problems that the cabinet door is difficult to unlock and the blowout preventer is difficult to quickly close when the driller is temporarily confused or the driller just rests on a drill floor under sudden well kick and blowout, obviously improve the stability and reliability of well closing under sudden conditions, obviously reduce the safety risk when the driller cannot find a key in confusion, and are favorable for ensuring that the well is closed at the first time so as to fully ensure a safe well site.
2. According to the blowout preventer assembly control cabinet and the opening method, the colorless and transparent acrylic plate is used as the cabinet door material, compared with a glass material, the transmittance is better, the sight is clearer, and the density is obviously reduced, so that the acrylic plate with the thicker thickness can be used on the premise of ensuring the lighter weight, and the balance between the safety and the stability of the cabinet door is favorably realized.
3. According to the blowout preventer assembly control cabinet and the opening method, forced damage to the cabinet door made of acrylic materials is achieved through a hot melting mode, so that the control assembly in the cabinet body can be operated under the special working condition that an electric control lock fails and a key cannot be found quickly, and the safety and the stability when the acrylic plate is used as the cabinet door of the blowout preventer stack control cabinet are improved remarkably.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic illustration of a prior art wellhead blowout preventer stack;
FIG. 2 is a schematic view of the present invention without a cabinet door installed;
FIG. 3 is a schematic view of a cabinet door according to an embodiment of the present invention;
FIG. 4 is a front view of a frame in an embodiment of the invention;
FIG. 5 is a side view of an embodiment of the present invention;
fig. 6 is a side view of an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-cabinet body, 2-cabinet door, 3-electric control lock, 4-frame, 5-first driving piece, 6-heating device, 7-groove, 8-metal sheet, 9-second driving piece, 10-positive electrode and 11-negative electrode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
the blowout preventer assembly control cabinet shown in fig. 2 and 3 comprises a cabinet body 1 with an open front, a control assembly located in the cabinet body 1, and a cabinet door 2 matched with the cabinet body 1, and is characterized in that the cabinet door 2 is controlled by an electric control lock 3 to be locked, the electric control lock 3 is in signal connection with a controller, and the controller acquires overflow amount of a well mouth in real time.
And the overflow amount is equal to the discharge amount returned from the wellhead-the output discharge amount of the mud pump.
In this embodiment, the cabinet door is controlled by the control cabinet to automatically unlock, and the specific method is as follows: setting an overflow threshold value, and monitoring the overflow quantity in real time; when normal well drilling and completion operation is carried out, the electric control lock 3 is used for locking the cabinet door 2 of the control cabinet body 1, wherein the cabinet door 2 is made of an acrylic plate; and when the overflow quantity is larger than the overflow threshold value, the electric control lock 3 is automatically unlocked.
The unlock condition of the controller (i.e., the above-mentioned safety threshold) may be set to a harsher condition, for example, the overflow threshold is equal to 110% of the real-time output displacement of the mud pump.
Wherein the cabinet door 2 is a vertical hinged door which is turned outwards.
Example 2:
in the blowout preventer assembly control cabinet shown in fig. 2 to 5, based on embodiment 1, the cabinet door 2 is made of acrylic plates. A frame 4 and a first driving piece 5 for driving the frame 4 to move towards the front open end of the cabinet body 1 are arranged in the cabinet body 1; the outer edge of the front surface of the frame 4 is provided with a circle of heating device 6, and the controller is also used for controlling the first driving piece 5 and the heating device 6. The frame 4 openly sets up round recess 7, sets up foil 8, second driving piece 9 in the recess 7, second driving piece 9 is used for driving foil 8 and stretches out outside recess 7. The heating device 6 is a heating resistance wire or a high-temperature electric heating film which is positioned outside the groove 7. Wherein the metal sheet 8 is a hard alloy sheet with the thickness of 1-3 mm.
When the electric control lock 3 cannot be unlocked due to a kick or blowout, the first driving piece 5 drives the frame 4 in the cabinet body 1 to move towards the open end of the front face of the cabinet body 1, meanwhile, the heating device 6 on the outer edge of the front face of the frame 4 is started, and the acrylic plate is melted by the heating device 6.
The melting method of the acrylic plate comprises the following steps: the first driving piece 5 drives the surface of the frame 4 to be attached to the inner side of the cabinet door 2, the heating resistance wire continuously heats, and meanwhile, the second driving piece 9 drives the metal sheet 8 to move towards the direction of the cabinet door 2 and to crack the acrylic plate;
example 3:
in a blowout preventer assembly control cabinet as shown in fig. 6, unlike embodiment 2, the heating device 6 is a plurality of positive electrodes 10 and negative electrodes 11 disposed on opposite sides of the groove 7, and the positive electrodes 10 correspond to the negative electrodes 11 one by one.
The melting method of the acrylic plate in the embodiment comprises the following steps: the surface of the frame 4 is driven by the first driving piece 5 to be attached to the inner side of the cabinet door 2, discharge is carried out between the positive electrodes 10 and the negative electrodes 11 on the two opposite sides of the groove 7, so that the metal sheet 8 is rapidly heated by being struck, and meanwhile, the second driving piece 9 drives the metal sheet 8 to move towards the direction of the cabinet door 2 and to cut the acrylic plate.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. A blowout preventer assembly control cabinet comprises a cabinet body (1) with an opening in the front, a control assembly positioned in the cabinet body (1) and a cabinet door (2) matched with the cabinet body (1), and is characterized in that the cabinet door (2) is controlled by an electric control lock (3) to be locked, the electric control lock (3) is in signal connection with a controller, and the controller acquires well mouth overflow amount in real time;
the cabinet door (2) is made of an acrylic plate;
a frame (4) and a first driving piece (5) for driving the frame (4) to move towards the front open end of the cabinet body (1) are arranged in the cabinet body (1); a circle of heating device (6) is arranged on the outer edge of the front face of the frame (4), and the controller is also used for controlling the first driving piece (5) and the heating device (6);
the front surface of the frame (4) is provided with a circle of grooves (7), the grooves (7) are internally provided with metal sheets (8) and second driving pieces (9), and the second driving pieces (9) are used for driving the metal sheets (8) to extend out of the grooves (7);
the heating device (6) is a heating resistance wire or a high-temperature electric heating film which is positioned outside the groove (7);
the heating device (6) comprises a plurality of positive electrodes (10) and negative electrodes (11) which are arranged on two opposite sides of the groove (7), and the positive electrodes (10) and the negative electrodes (11) are in one-to-one correspondence;
the opening method of the blowout preventer assembly control cabinet comprises the following steps:
setting an overflow threshold value, and monitoring the overflow quantity in real time;
when normal well drilling and completion operation is carried out, the cabinet door (2) of the control cabinet body (1) is locked by using the electric control lock (3), wherein the cabinet door (2) is made of an acrylic plate;
when the overflow quantity is larger than the overflow threshold value, the electric control lock (3) is automatically unlocked;
when the electric control lock (3) cannot be unlocked due to well kick or blowout, the frame (4) in the cabinet body (1) is driven by the first driving piece (5) to move towards the open end of the front face of the cabinet body (1), meanwhile, the heating device (6) on the outer edge of the front face of the frame (4) is started, and the acrylic plate is melted by the heating device (6).
2. The blowout preventer assembly control cabinet according to claim 1, wherein the spill rate is wellhead return displacement-mud pump output displacement.
3. The blowout preventer assembly control cabinet according to claim 1, wherein the acrylic plate is melted by:
the first driving piece (5) drives the surface of the frame (4) to be attached to the inner side of the cabinet door (2), the heating resistance wire continuously heats, and meanwhile, the second driving piece (9) drives the metal sheet (8) to move towards the direction of the cabinet door (2) and crack the acrylic plate;
or the surface of the frame (4) is driven by the first driving piece (5) to be attached to the inner side of the cabinet door (2), discharge is carried out between the positive electrodes (10) and the negative electrodes (11) on the two opposite sides of the groove (7), so that the metal sheet (8) is rapidly heated by being struck, and meanwhile, the second driving piece (9) drives the metal sheet (8) to move towards the direction of the cabinet door (2) and crack the acrylic plate.
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| CN202010826408.XA CN111932745B (en) | 2020-08-17 | 2020-08-17 | Blowout preventer assembly control cabinet and opening method |
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| CN202010826408.XA CN111932745B (en) | 2020-08-17 | 2020-08-17 | Blowout preventer assembly control cabinet and opening method |
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| CN202850930U (en) * | 2012-10-25 | 2013-04-03 | 中国石油大学(北京) | Overflow automatic control device for drilling |
| CN105370234A (en) * | 2015-12-14 | 2016-03-02 | 中国石油化工股份有限公司 | Intelligent control device for blowout preventer |
| CN205705265U (en) * | 2016-03-16 | 2016-11-23 | 合肥天盛自动化控制技术有限公司 | A kind of acrylic bending apparatus |
| CN205936006U (en) * | 2016-08-04 | 2017-02-08 | 中国石油天然气股份有限公司 | Oil well control system |
| CN206617131U (en) * | 2017-04-19 | 2017-11-07 | 中国石油天然气集团公司 | A kind of well head emergency flight control system |
| CN107882529A (en) * | 2017-12-15 | 2018-04-06 | 天水电气传动研究所有限责任公司 | A kind of control system and method for being used to protect oil-well rig top to drive inner blowout preventer |
| CN210158278U (en) * | 2019-01-22 | 2020-03-20 | 陆厚善 | Acrylic assembled cabinet |
| CN210470030U (en) * | 2019-09-16 | 2020-05-05 | 西安众望能源科技有限公司 | Gas field well head integration acquisition control cabinet |
| CN211047676U (en) * | 2019-10-25 | 2020-07-17 | 广州展赢信息科技有限公司 | Good heat dissipation's server rack |
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| CN111932745A (en) | 2020-11-13 |
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