Soft lock device of traveling block type drill string heave compensation system

Abstract

The invention discloses a soft lock device of a traveling block type drill string heave compensation system, which is characterized in that the on-off of a high-pressure pipeline of a compensation cylinder of a compensation device is controlled through a pneumatic control ball valve, an angle actuator, a proximity switch and a pneumatic control electromagnetic valve, and the pneumatic control electromagnetic valve and the angle actuator are controlled through a control box, so that the pneumatic control ball valve is controlled; the control box achieves the function that a driller remotely monitors the locking state of the upper frame and the lower frame of the compensation device by displaying the feedback of the displacement sensor of the locking oil cylinder, achieves the purpose that the compensation cylinder of the compensation device is locked to hover at any position by combining the feedback of the position sensor in the compensation cylinder, and improves the drilling operation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil equipment and relates to a soft lock device for a traveling block type drill string heave compensation system. Background Art

[0002] The drill string heave compensation system is an important drilling equipment essential for offshore floating drilling platforms. Its main uses are as follows: reducing the impact of platform heave on drilling operations under the action of sea waves, reducing the bottom hole drill pressure fluctuation caused by heave movement, and solving the accurate lowering technology problem of underwater equipment. As an important control component of the drill string heave compensation system, the existing technology has not realized the integrated control and display functions of the soft lock device for the working state of the drill string heave compensation system. Summary of the Invention

[0003] The purpose of the present invention is to provide a soft lock device for a traveling block type drill string heave compensation system, which solves the problem that the existing soft lock device cannot achieve the integrated control and display of the working state of the drill string heave compensation system.

[0004] The technical solution adopted by the present invention is that for the soft lock device of a traveling block type drill string heave compensation system, the compensation system includes a compensation cylinder and a locking device assembly. The compensation cylinder is connected to a high-pressure air inlet pipeline. The locking device assembly includes a locking cylinder. Position sensors are respectively arranged in the compensation cylinder and the locking cylinder. It includes a soft lock device body and a control box. The soft lock device body includes pneumatic control ball valves connected to each high-pressure air inlet pipeline. An angle actuator for operating its opening and closing is assembled on each pneumatic control ball valve. The pneumatic control ball valve is also connected to a proximity switch for detecting its state. It also includes a pneumatic control solenoid valve. The pneumatic control solenoid valve is respectively connected to each angle actuator. The control box is connected to the proximity switch and the position sensor in the compensation cylinder.

[0005] The characteristics of the present invention also lie in that:

[0006] The control box includes a digital light column display instrument, and the digital light column display instrument is connected to the position sensor in the compensation cylinder.

[0007] The control box also includes an indicator light, and the indicator light is connected to the proximity switch.

[0008] The indicator light is connected to the displacement sensor in the locking cylinder.

[0009] The control box also includes a two-position selector switch, and the two-position selector switch is connected to the pneumatic control solenoid valve.

[0010] The beneficial effects of the present invention are as follows: the soft locking device of the traveling carriage type drill string heave compensation system of the present invention controls the on-off of the high-pressure pipeline of the compensation cylinder of the compensation device through the air-controlled ball valve, the angle actuator, the proximity switch, and the air-controlled solenoid valve, and controls the air-controlled solenoid valve and the angle actuator through the control box, and then controls the air-controlled ball valve, and combines the feedback of the position sensor in the compensation cylinder to realize the locking of the compensation device compensation cylinder to hover at any position, thereby improving the drilling operation efficiency; through the digital light column display, the displacement of the compensation cylinder and the on-off state of the indicator light air-controlled ball valve are displayed, the working state of the compensation device can be timely and effectively fed back and controlled in time, providing an intuitive reference basis for the drilling platform staff, and avoiding drilling operation accidents to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an application diagram of the soft locking device of the traveling carriage type drill string heave compensation system of the present invention;

[0012] Figure 2 It is a structural schematic diagram of a soft lock device body in a soft lock device of a traveling carriage type drill string heave compensation system of the present invention;

[0013] Figure 3 It is a side view of the soft lock device body in the soft lock device of the traveling carriage type drill string heave compensation system of the present invention;

[0014] Figure 4 It is a principle diagram of the soft lock device body in the soft lock device of the traveling carriage type drill string heave compensation system of the present invention;

[0015] Figure 5 The present invention is a control panel diagram of a control box in a soft lock device of a traveling carriage type drill string heave compensation system.

[0016] In the figure, 1. soft lock device control box, 2. soft lock device body, 3. air-controlled ball valve, 4. angle actuator, 5. proximity switch, 6. air-controlled solenoid valve, 7. digital light column display, 8 indicator light, 9. selection switch. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] Soft lock device of traveling carriage drill string heave compensation system, such as Figure 1 As shown, the compensation system includes a compensation cylinder and a locking device assembly, the compensation cylinder is connected to the high-pressure air intake pipeline, the locking device assembly includes a locking cylinder, and position sensors are respectively arranged in the compensation cylinder and the locking cylinder. The soft locking device of this embodiment is used to control the on-off of the high-pressure air intake pipeline of the compensation cylinder, and includes a control box 1 and a soft locking device body 2, as shown in FIG. Figures 2 - 4As shown, the soft locking device body 2 includes an air-controlled ball valve 3 connected to each high-pressure air intake pipeline, each air-controlled ball valve 3 is equipped with an angle actuator 4 for manipulating its switch, the air-controlled ball valve 3 is also connected to a proximity switch 5 for detecting its state, and also includes an air-controlled solenoid valve 6, which is respectively connected to each angle actuator 4; the control box 1 is connected to the proximity switch 5, the compensation cylinder and the position sensor in the locking cylinder of the locking device.

[0020] Example 2

[0021] Soft lock device of traveling carriage drill string heave compensation system, such as Figure 1 As shown, the compensation system includes a compensation cylinder and a locking device assembly, the compensation cylinder is connected to the high-pressure air intake pipeline, the locking device assembly includes a locking cylinder, and position sensors are respectively arranged in the compensation cylinder and the locking cylinder. The soft locking device of this embodiment is used to control the on-off of the high-pressure air intake pipeline of the compensation cylinder, and includes a soft locking device control box 1 and a soft locking device body 2, as shown in FIG. Figures 2 - 4 As shown, the soft lock device body 2 includes an air-controlled ball valve 3 connected to each high-pressure air intake pipeline, each air-controlled ball valve 3 is equipped with an angle actuator 4 for operating its switch, and the air-controlled ball valve 3 is also connected to a proximity switch 5 for detecting its state, and also includes an air-controlled solenoid valve 6, which is respectively connected to each angle actuator 4; the control box 1 is connected to the proximity switch 5, the compensation cylinder and the position sensor in the locking cylinder of the locking device. Figure 5 As shown, the control box 1 includes a digital light column display 7 arranged on the panel, and the digital light column display 7 is connected to the displacement sensor in the compensation cylinder. The control box 1 also includes an indicator light 8 arranged on the panel, and the indicator light 8 is respectively connected to the displacement sensor in the locking cylinder and the proximity switch 5. The control box 1 also includes a two-position selection switch 9 arranged on the panel, and the two-position selection switch 9 is connected to the air-controlled solenoid valve 6.

[0022] Example 3

[0023] The soft lock device of the traveling block type drill string heave compensation system is used to control the on / off of the high-pressure inlet pipeline of the compensation cylinder of the compensation system. The rodless cavity of the compensation cylinder is filled with high-pressure air to bear the compensation load. The piston rod cavity of the compensation cylinder is filled with hydraulic oil for lubrication and speed control. A position sensor is arranged in the compensation cylinder. The soft lock device includes a soft lock device control box 1 and a soft lock device body 2. The soft lock device body 2 is installed on the high-pressure pipeline of the compensation cylinder of the compensation device and performs heave compensation movement along with the compensation device. In this embodiment, there are four high-pressure inlet pipelines. The soft lock device body 2 includes pneumatic ball valves 3 connected to each high-pressure inlet pipeline, which can control the on / off of the four high-pressure inlet pipelines, so as to control the on / off of the high-pressure inlet pipeline of the compensation cylinder of the compensation device and realize locking the compensation cylinder of the compensation device to hover at any position. An angle actuator 4 for operating its switch is assembled on each pneumatic ball valve 3 as a power element for operating the pneumatic ball valve 3 to open / close. The pneumatic ball valve 3 is also connected with a proximity switch 5 for detecting its state, and the signal is fed back to the control box 1 through a cable. There is also a pneumatic solenoid valve 6. The pneumatic solenoid valve 6 is respectively connected to each angle actuator 4 through an inlet pipeline, and the pneumatic solenoid valve 6 controls the forward / reverse rotation of the angle actuator 4.

[0024] The control box 1 is installed in the driller's cabin. The control box 1 includes a digital light column display 7 arranged on the panel. The digital light column display 7 is connected to the position sensor in the compensation cylinder. The digital light column display 7 is used to detect the electrical signal from the position sensor in the compensation cylinder and convert it into a digital and position signal for display on the light column. The control box 1 includes an indicator light 8 arranged on the panel. The indicator light 8 is respectively connected to the displacement sensor and the proximity switch 5 arranged in the locking cylinder of the locking device assembly, and can be used to display the locking / unlocking of the locking device assembly and the open / closed state of the pneumatic ball valve 3. The control box 1 includes a two-position selector switch 9 arranged on the panel. The two-position selector switch 9 is connected to the pneumatic solenoid valve 6 and can remotely control the pneumatic solenoid valve 6.

[0025] The working principle of the soft lock device of the traveling block type drill string heave compensation system of the present invention is as follows:

[0026] The position sensor real-time feeds back the position of the piston rod of the compensation cylinder to the controller and is displayed through the digital light column display 7. The on / off of the four high-pressure inlet pipelines is controlled by the pneumatic ball valves 3 on each high-pressure inlet pipeline, so as to control the on / off of the high-pressure inlet pipeline of the compensation cylinder of the compensation device and realize locking the compensation cylinder of the compensation device to hover at any position.

[0027] Through the above method, the soft locking device of the traveling carriage type drill string heave compensation system of the present invention controls the on-off of the high-pressure pipeline of the compensation cylinder of the compensation device through the air-controlled ball valve, the angle actuator, the proximity switch, and the air-controlled solenoid valve, and controls the air-controlled solenoid valve and the angle actuator through the control box, and then controls the air-controlled ball valve, combined with the feedback of the position sensor in the compensation cylinder, to achieve the locking of the compensation device compensation cylinder to hover at any position, thereby improving the drilling operation efficiency; the displacement of the compensation cylinder is displayed by the digital light column display, the locking / unlocking of the locking device assembly and the on-off state of the air-controlled ball valve are displayed by the indicator light, so that the working state of the compensation device can be fed back and controlled in a timely and effective manner, providing an intuitive reference basis for the drilling platform staff, and avoiding drilling operation accidents to the greatest extent.

Claims

1. Soft locking device for traveling block type drill string heave compensation system, the compensation system comprising a compensation cylinder and a locking device assembly, the compensation cylinder being connected to a high-pressure air inlet pipeline, the locking device assembly comprising a locking cylinder, position sensors being respectively arranged in the compensation cylinder and the locking cylinder, characterized in that, The invention comprises a soft locking device body (2) and a control box (1), wherein the soft locking device body (2) comprises an air-controlled ball valve (3) connected to each high-pressure air intake pipeline, each of the air-controlled ball valves (3) is equipped with an angle actuator (4) for operating the opening and closing thereof, the air-controlled ball valve (3) is also connected to a proximity switch (5) for detecting its state, and also comprises an air-controlled solenoid valve (6), the air-controlled solenoid valve (6) is respectively connected to each angle actuator (4), the control box (1) is connected to the proximity switch (5), and a position sensor in a compensation cylinder.

2. The soft locking device of the traveling block type drill string heave compensation system according to claim 1, characterized in that, The control box (1) comprises a digital light column display (7), and the digital light column display (7) is connected to a position sensor in a compensation cylinder.

3. The soft locking device of the traveling block type drill string heave compensation system according to claim 1, characterized in that, The control box (1) also includes an indicator light (8), and the indicator light (8) is connected to the proximity switch (5).

4. The soft locking device of the traveling block type drill string heave compensation system according to claim 3, wherein, The indicator light (8) is connected to a displacement sensor in the locking cylinder.

5. The soft lock device of the traveling block type drill string heave compensation system according to claim 1, characterized in that, The control box (1) also includes a two-position selector switch (9), and the two-position selector switch (9) is connected to the air-controlled solenoid valve (6).

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