Electric control operation device of manual blowout preventer and control method and control system of electric control operation device

Abstract

The invention discloses an electric control operation device of a manual blowout preventer and a control method and a control system of the electric control operation device, and relates to the technical field of automatic auxiliary control. In the electric control operation device, a rotating shaft of a direct current motor and a shaft rod of the manual blowout preventer are coaxially arranged, and a PLC controls the direct current motor to rotate forwards or backwards according to an operation instruction; further, a shaft rod of the manual blowout preventer is driven to rotate; the number of turns of rotation of the direct-current motor is measured by the number-of-turns detection sensor and transmitted to the PLC, and the PLC controls the magnitude of input current in the direct-current motor according to the number of turns of rotation of the direct-current motor; in the control process, the number of turns of rotation, the magnitude of input current, state information and alarm information of the direct current motor are displayed in a visual mode. In addition, the operator can transmit the rotation action to the shaft rod of the manual blowout preventer through the extension shaft rod. According to the device, the rotating position of the shaft rod of the manual blowout preventer can be accurately controlled, and the flashboard of the manual blowout preventer can be quickly opened and closed through one-key starting.

Description

Technical Field

[0001] The present application relates to the technical field of automated auxiliary control, and in particular to an electric control operating device for a manual blowout preventer and a control method and control system thereof. Background Art

[0002] In recent years, due to the increase in the intensity of oil exploration and development, more and more high-temperature and high-pressure oil and gas fields have been developed, and the risk of blowouts has also increased. Blowout preventers play a key role in preventing blowout accidents. Blowout preventers are important control equipment for controlling the wellhead blowout preventer group and are indispensable safety devices in drilling and well repair operations. At present, the blowout preventers on the market are mainly divided into manual and hydraulically controlled types. Manual blowout preventers require two operators to stand on both sides of the blowout preventer and manually operate to tighten or loosen the gate at the same time, such as Figure 1 and Figure 2 As shown. The operator uses a rocker similar to an inner hexagonal sleeve to synchronously rotate the BOP shafts on the left and right sides of the BOP housing, and controls the clamping or loosening of the two semicircular BOP gates through the internal mechanical structure. These gates clamp or release the oil pipe by advancing and retreating; however, this manual operation method has the disadvantages of slow operation speed, high physical exertion, and the operator still needs to operate on site in critical situations. The hydraulic control BOP uses a hydraulic motor to replace manual operation, and controls the locking or loosening of the gate by simulating manual rotation of the locking shaft to achieve the clamping or loosening of the oil pipe. However, the power source system of the hydraulic control BOP is relatively complex, and it is necessary to heat the hydraulic oil in a low temperature environment and dissipate heat in a high temperature environment; in addition, if the hydraulic power source fails, the hydraulic control BOP usually does not retain the manually operated shaft for sealing performance, which will make it impossible to perform emergency manual operation. Summary of the invention

[0003] The purpose of the present application is to provide an electric control operating device for a manual blowout preventer and a control method and control system thereof, which can accurately control the rotation position of the shaft of the manual blowout preventer and realize one-button start and quick opening and closing of the manual blowout preventer gate.

[0004] To achieve the above objectives, this application provides the following solutions: In a first aspect, the present application provides an electric control operating device for a manual blowout preventer, comprising: an electric control operating device housing, a mechanical clamping mechanism, a DC motor, a rotation number detection sensor and an extended shaft rod; the mechanical clamping mechanism is arranged through the side wall of the electric control operating device housing, and is used to fix and clamp the shaft rod of the manual blowout preventer; the DC motor is arranged inside the electric control operating device housing, and the rotating shaft of the DC motor is coaxially arranged with the shaft rod of the manual blowout preventer, and the DC motor is used to drive the shaft rod of the manual blowout preventer to rotate; the rotation number detection sensor is arranged on one side of the DC motor, and is used to measure the rotation number of the DC motor, and transmit the rotation number of the DC motor to the PLC controller; the PLC controller is used to detect the rotation number of the DC motor based on the rotation number of the DC motor. According to the operation instruction, the DC motor is controlled to rotate forward or reverse through the DC controller; the PLC controller is also used to control the input current in the DC motor through the DC controller according to the number of rotations of the DC motor; the PLC controller is also used to display the number of rotations of the DC motor and the input current of the DC motor in a visual form; the PLC controller is also used to display status information and alarm information; the extended shaft rod extends out of the side of the electric control operating device housing away from the manual blowout preventer, the extended shaft rod is coaxially arranged with the shaft rod of the manual blowout preventer, and the extended shaft rod is used to transmit the rotation action to the shaft rod of the manual blowout preventer through the extended shaft rod when the DC motor fails and the shaft rod of the manual blowout preventer needs to be rotated urgently.

[0005] Optionally, the electric control operating device also includes: a quick plug-in interface; the quick plug-in interface is opened on the housing of the electric control operating device, the DC controller is electrically connected to the DC motor through the quick plug-in interface, and the PLC controller obtains the number of rotations of the DC motor from the turn detection sensor through the quick plug-in interface.

[0006] Optionally, the electric control operating device also includes: a current sensor; the current sensor is arranged on the DC controller, and the current sensor is used to detect the input current of the DC motor; the PLC controller is also used to control the emergency braking of the DC motor according to the input current and speed of the DC motor.

[0007] Optionally, the PLC controller is also used to communicate with a wireless remote control handle, and the operation instruction is a control instruction of the wireless remote control handle.

[0008] Optionally, the DC motor adopts a explosion-proof low-voltage DC motor, and the electric control operating device is installed as a whole in a explosion-proof housing.

[0009] In a second aspect, the present application provides a control method for an electric control operating device of a manual blowout preventer, which is used to control the electric control operating device of the manual blowout preventer described above, and the control method for the electric control operating device of the manual blowout preventer includes: According to the operating instructions, the DC motor is controlled by the DC controller to rotate forward or reverse.

[0010] The number of rotations of the DC motor is obtained from the rotation detection sensor.

[0011] According to the number of rotations of the DC motor, the input current in the DC motor is controlled by a DC controller; in the process of controlling the DC motor to rotate forward or reverse, the number of rotations of the DC motor, the input current of the DC motor, the status information and the alarm information are displayed in a visual form.

[0012] Optionally, the control method of the electric control operating device of the manual blowout preventer further includes the following steps: The emergency braking of the DC motor is controlled according to the input current size and the speed of the DC motor.

[0013] Optionally, the operation instruction is a control instruction of a wireless remote control handle.

[0014] In a third aspect, the present application provides a control system for an electric control operating device of a manual blowout preventer, which is used to control the electric control operating device of the manual blowout preventer described above. The control system of the electric control operating device of the manual blowout preventer includes the following modules: The forward and reverse control module is used to control the DC motor to rotate forward or reverse through the DC controller according to the operation instructions.

[0015] The rotation number acquisition module is used to obtain the rotation number of the DC motor from the rotation number detection sensor.

[0016] The input current control module is used to control the input current in the DC motor through a DC controller according to the number of rotations of the DC motor.

[0017] The visual display module is used to display the number of rotations of the DC motor, the input current of the DC motor, status information and alarm information in a visual form during the process of controlling the DC motor to rotate forward or reverse.

[0018] Optionally, the control system of the electric control operating device of the manual blowout preventer also includes: The emergency brake module is used to control the emergency brake of the DC motor according to the input current size and the rotation speed of the DC motor.

[0019] According to the specific embodiments provided in this application, this application discloses the following technical effects: The present application provides an electric control operating device for a manual blowout preventer, a control method thereof, and a control system. The electric control operating device comprises: a mechanical clamping mechanism penetrating through a side wall of a housing of the electric control operating device, which can be used to fix and clamp a shaft of the manual blowout preventer; a DC motor arranged inside the housing of the electric control operating device, wherein a rotating shaft of the DC motor is arranged coaxially with the shaft of the manual blowout preventer, and a PLC controller can control the DC motor to rotate forward or reverse through the DC controller according to an operation instruction, thereby driving the shaft of the manual blowout preventer to rotate; a revolution detection sensor is arranged on one side of the DC motor, measures the revolution number of the DC motor, and transmits it to the PLC controller; the PLC controller controls the input current of the DC motor through the DC controller according to the revolution number of the DC motor; during the control process, the revolution number and input current of the DC motor, state information, and alarm information are also displayed in a visual form; in addition, when the DC motor fails and the shaft of the manual blowout preventer needs to be rotated urgently, the operator can also transmit the rotation action to the shaft of the manual blowout preventer by extending the shaft. The above-mentioned electric control operating device provided by the present application adopts the feedback auxiliary control of the number of turns sensor, realizes the semi-closed loop feedback, can control the opening and closing of the manual blowout preventer gate with one key, can remotely open and close the gate, and improves on this basis, retains the manual opening and closing mode of the gate, that is, an extension shaft is provided in the electric control operating device, and manual operation can be directly performed when necessary. In summary, the above-mentioned electric control operating device of the present application solves the problems of high risk factor and high labor intensity of manual opening and closing of the gate and complex power source system of the hydraulically controlled opening and closing of the blowout preventer gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The figure is a schematic diagram of the structure of a manual blowout preventer with a single gate.

[0022] Figure 2 The figure is a schematic diagram of the structure of a manual blowout preventer with double gates.

[0023] Figure 3 A schematic structural diagram of an electric control operating device for a manual blowout preventer provided in one embodiment of the present application.

[0024] Figure 4 A schematic structural diagram of an electric control operating device for a manual blowout preventer provided in one embodiment of the present application when applied to a manual blowout preventer with a single gate.

[0025] Figure 5A schematic structural diagram of an electric control operating device for a manual blowout preventer provided in one embodiment of the present application when applied to a manual blowout preventer with double gates.

[0026] Figure 6 A schematic diagram of an electronic control operation page displayed by an electronic control operation device of a manual blowout preventer provided in one embodiment of the present application during actual application.

[0027] Figure 7 A schematic diagram of an IO data monitoring page displayed by an electric control operating device of a manual blowout preventer provided in one embodiment of the present application during actual application.

[0028] Figure 8 A schematic diagram of a fault alarm page displayed by an electric control operating device of a manual blowout preventer provided in one embodiment of the present application during actual application.

[0029] Fig. 9 A schematic diagram of an electric control operating device of a manual blowout preventer provided in an embodiment of the present application when installed in a riot-proof housing.

[0030] Fig.10 A flowchart of a control method of an electric control operating device of a manual blowout preventer provided in one embodiment of the present application.

[0031] Fig.11 A schematic diagram of functional modules of a control system of an electric control operating device for a manual blowout preventer provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] The embodiment of the present application provides an electric control operating device for a manual blowout preventer, such as Figure 3 As shown, the electric control operating device includes: an electric control operating device housing, a mechanical clamping mechanism, a DC motor, a turn detection sensor and an extended shaft rod.

[0035] The mechanical clamping mechanism is arranged through the side wall of the housing of the electric control operating device and is used for fixing and clamping the shaft rod of the manual blowout preventer.

[0036] The DC motor is arranged inside the housing of the electric control operating device, and the rotating shaft of the DC motor is arranged coaxially with the shaft of the manual blowout preventer, and the DC motor is used to drive the shaft of the manual blowout preventer to rotate. Specifically, the PLC controller controls the DC motor to rotate forward or reverse through the DC controller according to the operation instruction.

[0037] The revolution detection sensor is set on one side of the DC motor to measure the revolutions of the DC motor and transmit the revolutions of the DC motor to the PLC controller. The PLC controller is also used to control the input current of the DC motor through the DC controller according to the revolutions of the DC motor. The revolution detection sensor detects the revolutions of the shaft of the manual blowout preventer (the rotating shaft of the DC motor and the shaft of the manual blowout preventer are on the same horizontal axis, that is, the revolutions of the DC motor), and stops the motor when the revolutions of the DC motor reach the set value.

[0038] The PLC controller is also used to display the number of rotations of the DC motor and the input current of the DC motor in a visual form; the PLC controller is also used to display status information and alarm information.

[0039] In order to facilitate emergency manual takeover of electric control operation, an extended shaft rod extends out of a housing of the electric control operating device away from a side of the manual blowout preventer, and the extended shaft rod is coaxially arranged with the shaft rod of the manual blowout preventer. The extended shaft rod is used to transmit a rotational motion to the shaft rod of the manual blowout preventer through the extended shaft rod when a DC motor fails and the shaft rod of the manual blowout preventer needs to be rotated urgently.

[0040] In one embodiment, the extension shaft and the shaft of the manual blowout preventer are butted against each other through a butt joint part. The butt joint part is similar to a hexagon socket. The extension shaft and the shaft of the blowout preventer are similar to a hexagon socket and can be nested into each other during butt joint.

[0041] When the electric control operating device provided in this embodiment is applied to a manual blowout preventer with a single gate, the installation effect is as follows: Figure 4 Similarly, when the electric control operating device is applied to a manual blowout preventer with double gates, the installation effect is as follows: Figure 5 Specifically, when the electric control operating device provided in this embodiment is used in a specific application, two or four electric control operating devices are installed on both sides of the manual blowout preventer body, and the motor inside the electric control operating device is used to push forward and retract the gate to clamp or loosen the oil pipe.

[0042] In another exemplary embodiment of the present application, the electric control operating device also includes: a quick plug-in interface; the quick plug-in interface is opened on the housing of the electric control operating device, the DC controller is electrically connected to the DC motor through the quick plug-in interface, and the PLC controller obtains the number of rotations of the DC motor from the turn detection sensor through the quick plug-in interface.

[0043] When the electric control operating device is in use, the mechanical clamping mechanism of the electric control operating device is aligned with the shaft of the manual blowout preventer and the screws on the mechanical clamping mechanism are locked. Then, the quick plug-in interface is connected and power is turned on to automatically control the switch gate. When the electric control operating device fails, the entire electric control operating device can be quickly replaced, and the failed electric control operating device can also be removed separately to replace the accessories therein. Installation, disassembly, transportation and maintenance are very convenient.

[0044] In a specific embodiment, the electric control operation device further includes: a current sensor; the current sensor is arranged on the DC controller, and the current sensor is used to detect the input current of the DC motor; the PLC controller is also used to control the emergency braking of the DC motor according to the input current and speed of the DC motor. The start and stop of the DC motor can be completed by the operator using wireless remote control within a radius of 150 meters on the distribution box panel or the electric control operation device. When the current sensor installed on the upper end of the DC controller detects that the current is too large, the rotor is blocked, and the gate position is in place, the DC motor is forced to stop.

[0045] In an optional implementation, the turn detection sensor is installed in the tail area of ​​the DC motor, and the current sensor is installed at the upper end of the DC controller.

[0046] The circle detection sensor is used to detect the number of circles of the gate opening / closing of the blowout preventer. The current well opening and closing control requirements are: each well opening and closing must reach the rated circle of the corresponding blowout preventer model. The opening and closing circles of different brands and models of blowout preventers are different. Therefore, it is necessary to determine the rated opening and closing circles according to the brand and model of the blowout preventer. The position sensor is used in the software to detect the number of gate opening and closing circles, and the mechanical counter device is used in the hardware to detect the number of gate opening and closing circles.

[0047] The current sensor is used to detect the current of the DC motor. When the motor is overloaded and stalled, it automatically stops the motor. The software uses an analog current transformer to detect the motor current, and the hardware uses a fast fuse to protect the motor.

[0048] As an exemplary embodiment, the interfaces displayed in a visual form on the display of the distribution box by the PLC controller include: an electric control operation page, an IO data monitoring page and a fault alarm page; Figure 6 , Figure 7 and Figure 8 shown. Figure 6In the electric control operation page shown, when the left / right motor enable button is pressed, the DC motor on the corresponding side rotates, and when the left / right motor enable button is not pressed, the DC motor on the corresponding side does not rotate; the inching control button is used to switch the control mode, that is, when the inching control button is pressed, when the above-mentioned left / right motor enable button is pressed, the motor needs to be pressed continuously to rotate continuously, and the motor stops when the button is released; when the inching control button is not pressed, it is the linkage control mode, press the above-mentioned left / right motor enable button and release it, and the motor can continue to rotate until the gate is opened or closed. The middle column shows the signals fed back by each sensor in the system, and the parameter conditions that need to be set in the right column. When a certain parameter condition is reached during system operation, the next step is taken. Figure 7 The IO data monitoring page shown shows the input / output port signals (I / O) of the PLC controller. By displaying them on the touch screen, the on / off status of a certain signal can be seen, which is convenient for fault troubleshooting. Figure 8 The fault alarm page shown displays the occurrence date, time and detailed information of each fault alarm.

[0049] As an optional implementation, the PLC controller is also used to communicate with the wireless remote control handle, and the operation instruction is the control instruction of the wireless remote control handle. The wireless remote control handle at least includes a button that can control the electric control operating device to rotate forward and reverse and stop working.

[0050] To meet the on-site anti-riot requirements, the components of the electric control operating device need to be anti-riot themselves or placed in anti-riot accessories, such as Fig. 9 The electric control device shown in the figure is placed in a explosion-proof housing, the DC motor adopts an explosion-proof low-voltage DC motor, and the electric control device is installed in the explosion-proof housing as a whole. The motor inside the electric control device is an explosion-proof low-voltage DC motor, which is different from most of the AC motors, servo motors, stepper motors and other types of motors currently used; the explosion-proof low-voltage DC motor has the characteristics of simple principle, simple structure, simple control, simple maintenance, low failure rate, and low voltage. Matching DC controller and current sensor, taking into account low-voltage control, arc extinguishing, short circuit, overload, forward and reverse switching, controllable stall current and stall time, etc., it can be used in harsh on-site environments, and is easy to disassemble and assemble, easy to operate, oil-resistant, vibration-resistant, and high and low temperature-resistant.

[0051] For situations where the manual blowout preventer must open and close the gate in place, the servo and stepper motors often require a certain amount of stalling and overload time, and most servo, stepper and other motors need to be powered off and reset their drivers after a stall or overload alarm. In actual use, the alarm is relatively frequent, and the operation is complicated and increases the time for opening and closing the gate. The DC motor and the matching DC controller used in the electric control operating device proposed in the embodiment of the present application can freely set the stall current and stall time, and its stall, overload time and ratio are much greater than those of conventional servo and stepper motors, and the fault alarm rate is much lower than that of servo and stepper motors.

[0052] In another exemplary embodiment of the present application, a control method for an electric control operating device of a manual blowout preventer is provided, which is used to control the electric control operating device of the manual blowout preventer described in the above embodiment, such as Fig.10 As shown, the control method of the electric control operating device of the manual blowout preventer includes: A1. According to the operating instructions, the DC controller controls the DC motor to rotate forward or reverse.

[0053] A2. Obtain the number of rotations of the DC motor from the rotation detection sensor.

[0054] A3. According to the number of rotations of the DC motor, the input current in the DC motor is controlled by a DC controller; in the process of controlling the DC motor to rotate forward or reverse, the number of rotations of the DC motor, the input current of the DC motor, the status information and the alarm information are displayed in a visual form.

[0055] As an optional implementation, the control method of the electric control operating device of the manual blowout preventer further includes the following steps: A4. Control the emergency braking of the DC motor according to the input current and speed of the DC motor.

[0056] Wherein, when implementing this embodiment, the operation instruction is a control instruction of the wireless remote control handle.

[0057] The electric control operating device and control method provided in the above embodiment of the present application, taking a blowout preventer with 13 gates as an example, takes about 17-19 seconds for the electric control operating device to fully open the gate and fully close the gate, which is close to the 18 seconds required for two operators to manually close the gate, and meets the safety gate closing regulations. The gate can be automatically opened and closed on the spot through the distribution box set near the wellhead platform, or the gate can be remotely controlled by a wireless remote control handle within a radius of 150 meters from the wellhead, depending on the actual situation.

[0058] The device can detect the input current and number of turns of the DC motor. When the torque is too large (stalling or overload) or the number of turns is reached, the motor will stop and prompt automatically. It also has the function of detecting faults. When it detects motor overload, abnormal position, communication disconnection and other faults during use, it will alarm.

[0059] The control parameters of the electric control operating device are adjustable and suitable for manual blowout preventers of different models and sizes. Different parameters can be set on the human-machine interface displayed in a visual form by the PLC controller. The number of turns of the switch gate of different models of manual blowout preventers is inconsistent. For example, there are 13 and a half turns, 16 turns, and 19 turns, requiring the operator to set different parameter conditions.

[0060] The switch gate parameters are displayed in real time in a visual form, which is conducive to process optimization and convenient for fault maintenance. The motor of the electric control device can be synchronized and continuously moved, or can be synchronized and moved in steps, or can be separated into single continuous movements or in steps. Different action modes can cope with different working environments on site. The electric control device is a modular, integrated, and independent structure. When in use, the electric control device is directly installed on the original manual blowout preventer, and the original manual blowout preventer does not need to be modified.

[0061] Based on the same inventive concept, the embodiment of the present application also provides a control system for implementing the control method involved above. The implementation scheme for solving the problem provided by the system is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more control system embodiments provided below can refer to the limitations on the control method above, and will not be repeated here.

[0062] In an exemplary embodiment, Fig.11 As shown, a control system of an electric control operating device of a manual blowout preventer is provided, which is used to control the electric control operating device of the manual blowout preventer described in the above embodiment. The control system of the electric control operating device of the manual blowout preventer includes the following modules: The forward and reverse control module is used to control the DC motor to rotate forward or reverse through the DC controller according to the operation instructions.

[0063] The rotation number acquisition module is used to obtain the rotation number of the DC motor from the rotation number detection sensor.

[0064] The input current control module is used to control the input current in the DC motor through a DC controller according to the number of rotations of the DC motor.

[0065] The visual display module is used to display the number of rotations of the DC motor, the input current of the DC motor, status information and alarm information in a visual form during the process of controlling the DC motor to rotate forward or reverse.

[0066] As an optional embodiment, the control system of the electric control operating device of the manual blowout preventer also includes: The emergency brake module is used to control the emergency brake of the DC motor according to the input current size and the rotation speed of the DC motor.

[0067] certainly, Fig.11 The architecture shown is only exemplary and can be omitted according to actual needs when implementing different functions. Fig.11 One or at least two components of the system shown.

[0068] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An electric control operating device for a manual blowout preventer, characterized in that: include: An electric control operating device housing, a mechanical clamping mechanism, a DC motor, a rotation number detection sensor and an extended shaft rod; the mechanical clamping mechanism is arranged through the side wall of the electric control operating device housing and is used to fix and clamp the shaft rod of the manual blowout preventer; the DC motor is arranged inside the electric control operating device housing, the rotating shaft of the DC motor is coaxially arranged with the shaft rod of the manual blowout preventer, and the DC motor is used to drive the shaft rod of the manual blowout preventer to rotate; the rotation number detection sensor is arranged on one side of the DC motor and is used to measure the rotation number of the DC motor and transmit the rotation number of the DC motor to the PLC controller; the PLC controller is used to control the DC motor through the DC controller according to the operation instruction. The PLC controller is further used to control the input current of the DC motor through the DC controller according to the number of rotations of the DC motor; the PLC controller is further used to display the number of rotations of the DC motor and the input current of the DC motor in a visual form; the PLC controller is further used to display status information and alarm information; the extended shaft extends out of the side of the housing of the electric control operating device away from the manual blowout preventer, the extended shaft is coaxially arranged with the shaft of the manual blowout preventer, and the extended shaft is used to transmit the rotation action to the shaft of the manual blowout preventer through the extended shaft when the DC motor fails and the shaft of the manual blowout preventer needs to be rotated urgently.

2. The electric control operating device of the manual blowout preventer according to claim 1 is characterized in that: The electric control operating device also includes: a quick plug-in interface; the quick plug-in interface is arranged on the housing of the electric control operating device, the DC controller is electrically connected to the DC motor through the quick plug-in interface, and the PLC controller obtains the number of rotations of the DC motor from the number of rotations detection sensor through the quick plug-in interface.

3. The electric control operating device of the manual blowout preventer according to claim 1 is characterized in that: The electric control operating device also includes: a current sensor; the current sensor is arranged on the DC controller, and the current sensor is used to detect the input current of the DC motor; the PLC controller is also used to control the emergency braking of the DC motor according to the input current and speed of the DC motor.

4. The electric control operating device of the manual blowout preventer according to claim 1 is characterized in that: The PLC controller is also used to communicate with the wireless remote control handle, and the operation instruction is the control instruction of the wireless remote control handle.

5. The electric control operating device of the manual blowout preventer according to claim 1 is characterized in that: The DC motor is a riot-proof low-voltage DC motor, and the electric control operating device is integrally installed in a riot-proof housing.

6. A control method for an electric control operating device of a manual blowout preventer, characterized in that: An electric control operating device for controlling a manual blowout preventer according to any one of claims 1 to 5, wherein the control method comprises: According to the operation instructions, the DC motor is controlled by the DC controller to rotate forward or reverse; Obtaining the number of rotations of the DC motor from a number of rotations detection sensor; According to the number of rotations of the DC motor, the input current in the DC motor is controlled by a DC controller; in the process of controlling the DC motor to rotate forward or reverse, the number of rotations of the DC motor, the input current of the DC motor, status information and alarm information are displayed in a visual form.

7. The control method according to claim 6, characterized in that: The control method further comprises: The emergency braking of the DC motor is controlled according to the input current of the DC motor and the rotation speed of the DC motor.

8. The control method according to claim 6, characterized in that: The operation instructions are control instructions of the wireless remote control handle.

9. A control system for an electric control operating device of a manual blowout preventer, characterized in that: An electric control operating device for controlling a manual blowout preventer according to any one of claims 1 to 5, the control system comprising: A forward and reverse control module is used to control the DC motor to rotate forward or reverse through a DC controller according to an operation instruction; A rotation number acquisition module, used to obtain the rotation number of the DC motor from a rotation number detection sensor; An input current control module, used to control the input current of the DC motor through a DC controller according to the number of rotations of the DC motor; The visual display module is used to display the number of rotations of the DC motor, the input current of the DC motor, status information and alarm information in a visual form during the process of controlling the DC motor to rotate forward or reverse.

10. The control system according to claim 9, characterized in that: The control system further comprises: The emergency braking module is used to control the emergency braking of the DC motor according to the input current of the DC motor and the rotation speed of the DC motor.

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