Double-stop safety redundancy protection system for petroleum winch

Abstract

The invention relates to the technical field of winch equipment for petroleum drilling, in particular to a petroleum winch double-stop safety redundancy protection system which comprises a first protection system, a second protection system and a main air inlet pipe, the first protection system comprises an overwinding anti-collision valve arranged on the upper portion of the roller, a low-position anti-collision valve arranged on the lower portion of the roller and a first air inlet pipe, the first air inlet pipe is sequentially connected with the overwinding anti-collision valve and the low-position anti-collision valve, connected end to end and connected with the main air inlet pipe, and the second protection system comprises a mechanical control valve box and a second air inlet pipe. According to the anti-collision device, the mode of combining electronic anti-collision and double-mechanical anti-collision is adopted, and triple safety protection of upper collision and lower smashing is achieved. According to the system, the situation that the safety protection system fails due to partial mechanical or electronic faults is effectively avoided, the safety redundancy is improved, and the stability and reliability of the safety protection system are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of winch equipment for oil drilling, in particular to a double-stop safety redundant protection system for an oil winch. Background Art

[0002] During the drilling operation of the oil rig, the lifting and lowering of the drill string are completed by the winch lifting and traveling hoisting system. If the control of the winch is only achieved by the operator's experience, it is easy to cause the traveling hoist to hit the crown block or hit the drill table due to negligence, thus causing equipment damage or even casualties. Therefore, in order to ensure the safety of drilling operations, the winch must be equipped with sufficient safety protection devices. At present, most oil drilling winches are only equipped with an overwinding anti-collision valve, which is a mechanical crown block anti-collision device and has no down-smashing safety protection device. The safety protection system is single and imperfect. If a mechanical failure occurs, it is easy to cause a safety accident. Summary of the invention

[0003] In view of the above problems, the present invention provides a double-stop safety redundant protection system for a petroleum winch, which solves the problem of failure of the safety protection system due to mechanical or electronic failure of the winch part.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a double-stop safety redundant protection system for a petroleum winch, comprising a winch body, the winch body comprising a drum shaft, a drum and a steel wire rope wound on the drum, the protection system comprising a first protection system, a second protection system and a main air intake pipe for controlling the winch body, the first protection system comprising an over-winding anti-collision valve arranged on the upper part of the drum, a low-position anti-collision valve arranged on the lower part of the drum and a first air intake pipe, the first air intake pipe is connected to the over-winding anti-collision valve and the low-position anti-collision valve in sequence, and is connected end to end and connected to the main air intake pipe, the second protection system comprises a machine-controlled valve box and a second air intake pipe, the first air intake pipe is provided with a first shuttle valve, the second air intake pipe is provided with a second shuttle valve, and the second shuttle valve is connected to the first air intake pipe, the drum shaft is provided with an encoder, the encoder is connected to a collection and display unit, the winch body is provided with a brake caliper, the brake caliper is connected to a disc brake hydraulic station, the disc brake hydraulic station is connected to the first shuttle valve, and a solenoid valve is provided between the collection and display unit and the main air intake pipe.

[0005] As an optimization, the over-roll anti-collision valve is a two-position, three-position normally closed valve and is provided with a lever.

[0006] As an optimization, the low-level anti-collision valve includes a mounting seat, one end of the mounting seat is provided with a vertical plate, the top of the vertical plate is hingedly provided with a rocker arm, the top of the rocker arm is provided with a roller, a push rod is provided on the side opposite to the mounting seat, the mounting seat is provided with a through hole corresponding to the push rod, a spring is provided between the push rod and the vertical plate, and the other end of the mounting seat is provided with a push rod valve with a contact.

[0007] As an optimization, the machine-controlled valve box includes a box body, in which a machine-controlled valve and a turntable assembly for triggering the machine-controlled valve are arranged.

[0008] As an optimization, the turntable assembly includes a cam mechanism and a rotating mechanism arranged on the outside of the box to drive the cam mechanism, the cam mechanism includes an inner disk, the upper edge of the inner disk is provided with an upper protrusion, and the lower edge is provided with a lower protrusion.

[0009] As an optimization, the rotating mechanism includes an outer disk connected to the inner disk, and the outer disk is connected to the drum shaft.

[0010] As an optimization, both the upper edge and the lower edge of the inner plate are provided with slots, and the upper and lower protrusions are fixed to the slots by bolts respectively.

[0011] As an optimization, a sprocket is provided on the drum shaft, and a chain is provided between the sprocket and the outer disc.

[0012] As an optimization, a connecting shaft is provided between the inner disk and the outer disk.

[0013] As an optimization, the main air intake pipe is provided with an air intake port.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a double-stop safety redundant protection system for a petroleum winch, which adopts a combination of electronic anti-collision and dual mechanical anti-collision to achieve triple safety protection of upper collision and lower smash. The system effectively avoids the failure of the safety protection system due to partial mechanical or electronic failure, improves safety redundancy, and ensures the stability and reliability of the safety protection system.

[0015] An encoder is installed on the drum shaft, and the encoder signal is transmitted to the signal acquisition and display unit. The acquisition and display unit processes the input signal and outputs the signal to control the solenoid valve. The action of the solenoid valve controls the on-off of the air circuit, thereby controlling the disc brake hydraulic station to provide power to the brake caliper for braking. The overwinding anti-collision valve and the low-level anti-collision valve are mechanical structures to prevent upward collision and downward smashing, and their triggering is achieved by the wire rope wound on the drum. When the traveling carriage rises to the highest limit, the wire rope on the drum is wound to the preset trigger point, and the wire rope triggers the overwinding anti-collision valve, the control air of the disc brake hydraulic station is turned on, and the braking action is executed; when the traveling carriage descends to the lowest limit, the wire rope on the drum is released to the preset trigger point, the low-level anti-collision valve is triggered, and the control air of the disc brake hydraulic station is turned on, and the braking action is executed. The machine-controlled valve box is the second mechanical structure to prevent upward collision and downward smashing. The winch drum shaft drives the cam mechanism in the machine-controlled valve box to rotate through a chain. The inner disc is equipped with two adjustable upper and lower bumps. The positions of the upper and lower bumps are determined according to the upward and downward smashing points of the traveling block. The machine-controlled valve in the box is triggered to control the on and off of the control air of the disc brake hydraulic station, thereby controlling the braking action. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the schematic diagram of the patent system of this invention: Figure numerals: 1-acquisition and display unit, 2-encoder, 3-solenoid valve, 4-over-roll anti-collision valve, 5-roller, 6-first shuttle valve, 7-disc brake hydraulic station, 8-brake caliper, 9-second shuttle valve, 10-low-level anti-collision valve, 11-machine-controlled valve box.

[0017] Figure 2 This is the structure diagram of the low-level anti-collision valve: Figure numerals: 10.1 - roller, 10.2 - rocker arm, 10.3 - spring, 10.4 - mounting seat, 10.5 - push rod valve.

[0018] Figure 3 This is the structure diagram of the machine-controlled valve box: Figure numerals: 11.1 - upper protrusion, 11.2 - bolt, 11.3 - inner plate, 11.4 - lower protrusion, 11.5 - machine-controlled valve. DETAILED DESCRIPTION

[0019] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0022] like Figure 1 As shown, a double-stop safety redundant protection system for a petroleum winch includes a winch body, the winch body includes a drum shaft, a drum 5 and a wire rope wound on the drum, the protection system includes a first protection system for controlling the winch body, a second protection system and a main air intake pipe, the first protection system includes an over-winding anti-collision valve 4 arranged on the upper part of the drum, a low-level anti-collision valve 10 arranged on the lower part of the drum and a first air intake pipe, the first air intake pipe is connected to the over-winding anti-collision valve 4 and the low-level anti-collision valve 10 in sequence, and is connected end to end and connected to the main air intake pipe, the first The second protection system includes a machine-controlled valve box 11 and a second air intake pipe, the first air intake pipe is provided with a first shuttle valve 6, the second air intake pipe is provided with a second shuttle valve 9, and the second shuttle valve 9 is connected to the first air intake pipe, the drum shaft is provided with an encoder 2, the encoder 2 is connected to a collection and display unit 1, the winch body is provided with a brake caliper 8, the brake caliper 8 is connected to a disc brake hydraulic station 7, the disc brake hydraulic station 7 is connected to the first shuttle valve 6, an electromagnetic valve 3 is provided between the collection and display unit 1 and the main air intake pipe, and the main air intake pipe is provided with an air inlet.

[0023] The over-roll anti-collision valve 4 is a two-position, three-position normally closed valve and is provided with a lever.

[0024] like Figure 1 and Figure 2 As shown, the low-position anti-collision valve 10 includes a mounting seat 10.4, one end of which is provided with a vertical plate, the top of which is hingedly provided with a rocker arm 10.2, the top of which is provided with a roller 10.1, a push rod is provided on the side opposite to the mounting seat 10.4, the mounting seat 10.4 is provided with a through hole corresponding to the push rod, a spring 10.3 is provided between the push rod and the vertical plate, and the other end of the mounting seat 10.4 is provided with a push rod valve 10.5 with a contact.

[0025] like Figure 1 and Figure 3 As shown, the machine-controlled valve box 11 includes a box body, in which a machine-controlled valve 11.5 and a turntable assembly for triggering the machine-controlled valve 11.5 are arranged. The turntable assembly includes a cam mechanism and a rotating mechanism arranged outside the box body to drive the cam mechanism, and the cam mechanism includes an inner disk 11.3, and the upper edge of the inner disk 11.3 is provided with an upper protrusion 11.1, and the lower edge is provided with a lower protrusion 11.4. The rotating mechanism includes an outer disk connected to the inner disk 11.3, and the outer disk is connected to the drum shaft. The upper edge and the lower edge of the inner disk 11.3 are both provided with slots, and the upper protrusion 11.1 and the lower protrusion 11.4 are respectively fixed to the slots by bolts 11.2. A sprocket is provided on the drum shaft, and a chain is provided between the sprocket and the outer disk. A connecting shaft is provided between the inner disk 11.3 and the outer disk.

[0026] The electronic anti-collision signal acquisition element is an encoder 2, which is installed on the drum 5, and its rotor keeps synchronization with the rotation of the drum 5. The encoder 2 outputs a pulse signal and transmits it to the acquisition and display unit 1. The acquisition and display unit 1 processes the input pulse signal and calculates and displays the height of the traveling carriage. The acquisition and display unit 1 can preset the alarm height for the traveling carriage to hit the upper part and the alarm height for the traveling carriage to fall. When the calculated height of the traveling carriage exceeds the preset alarm height, the buzzer of the acquisition and display unit 1 alarms and outputs a voltage signal to the solenoid valve 3. The solenoid valve 3 changes direction, and the disc brake hydraulic station 7 controls the air circuit to be connected. The disc brake hydraulic station 7 provides power to the brake caliper 8 for braking.

[0027] like Figure 1 and Figure 2 As shown, the first mechanical anti-collision is realized by the action of the over-winding anti-collision valve 4 and the low-level anti-collision valve 10. The triggering of the two valves is realized by the steel wire rope wound on the drum 5. The over-winding anti-collision valve 4 is a mechanical two-position three-position normally closed valve. When the traveling carriage rises to the upper limit, the rope winding amount on the drum 5 reaches the set maximum value, and the traveling carriage continues to rise. The extra steel wire rope wound on the drum 5 triggers the lever of the over-winding anti-collision valve 4, making the over-winding anti-collision valve 4 conductive, and the control air controls the disc brake hydraulic station 7 to perform the braking action. The low-position anti-collision valve 10 is an actuator for the lowering point. During normal drilling operations, the roller 10.1 is always attached to the wire rope, and the spring 10.3 is always in a compressed state through the rocker arm 10.2. At this time, the push rod valve 10.5 is not triggered. When the traveling block descends to a height exceeding the preset lowest point, the roller 10.1 is separated from the extrusion of the layer of wire rope, the spring 10.3 is released, and the rocker arm 10.2 moves to the right. The push rod valve 10.5 is triggered and connected, and the outlet air of the overwinding anti-collision valve 4 and the low-position anti-collision valve 10 is connected to the disc brake hydraulic station 7 through the first shuttle valve 6, providing power for the brake caliper 8 to brake.

[0028] like Figure 1 and Figure 3 As shown, the second mechanical anti-collision is realized by a machine-controlled valve box 11. A sprocket is installed on the drum 5, and the inner disk 11.3 is driven to rotate by the chain. The inner disk 11.3 is grooved, and the upper protrusion 11.1 and the lower protrusion 11.4 are fixed to the inner disk 11.3 by bolts 11.2. The upper protrusion 11.1 and the lower protrusion 11.4 are adjusted to the fixed position on the inner disk 11.3 according to the upper contact point and the lower smashing point of the traveling carriage, respectively. When the movement of the traveling carriage exceeds the set upper contact and lower smashing point, the protrusion will trigger the machine-controlled valve 11.5 to be turned on, and the outlet gas of the machine-controlled valve 11.5 and the electromagnetic valve 3 of the electronic anti-collision passes through the second shuttle valve 9 and then through the first shuttle valve 6 to the disc brake hydraulic station 7, providing power for the brake caliper 8 to brake.

[0029] The above-mentioned specific implementations are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific implementations. Any appropriate changes or modifications made to them by ordinary technicians in the technical field that conform to the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A double-stop safety redundant protection system for a petroleum winch, comprising a winch body, wherein the winch body comprises a drum shaft, a drum and a steel wire rope wound on the drum, characterized in that: The protection system includes a first protection system for controlling the winch body, a second protection system and a main air intake pipe, the first protection system includes an over-winding anti-collision valve arranged on the upper part of the drum, a low-level anti-collision valve arranged on the lower part of the drum and a first air intake pipe, the first air intake pipe is connected to the over-winding anti-collision valve and the low-level anti-collision valve in sequence, and is connected end to end and connected to the main air intake pipe, the second protection system includes a machine-controlled valve box and a second air intake pipe, the first air intake pipe is provided with a first shuttle valve, the second air intake pipe is provided with a second shuttle valve, and the second shuttle valve is connected to the first air intake pipe, an encoder is provided on the drum shaft, the encoder is connected to a collection and display unit, a brake caliper is provided on the winch body, the brake caliper is connected to a disc brake hydraulic station, the disc brake hydraulic station is connected to the first shuttle valve, and a solenoid valve is provided between the collection and display unit and the main air intake pipe.

2. The oil winch double stop safety redundant protection system according to claim 1 is characterized in that: The over-roll anti-collision valve is a two-position, three-position normally closed valve and is provided with a lever.

3. The oil winch double stop safety redundant protection system according to claim 1 is characterized in that: The low-level anti-collision valve includes a mounting seat, one end of the mounting seat is provided with a vertical plate, the top of the vertical plate is hingedly provided with a rocker arm, the top of the rocker arm is provided with a roller, a push rod is provided on the side opposite to the mounting seat, the mounting seat is provided with a through hole corresponding to the push rod, a spring is provided between the push rod and the vertical plate, and the other end of the mounting seat is provided with a push rod valve with a contact.

4. The oil winch double stop safety redundant protection system according to claim 1 is characterized in that: The machine-controlled valve box comprises a box body, in which a machine-controlled valve and a rotating disk assembly for triggering the machine-controlled valve are arranged.

5. The oil winch double stop safety redundant protection system according to claim 4 is characterized in that: The turntable assembly includes a cam mechanism and a rotating mechanism arranged outside the box body to drive the cam mechanism. The cam mechanism includes an inner disk. The upper edge of the inner disk is provided with an upper protrusion, and the lower edge is provided with a lower protrusion.

6. The oil winch double stop safety redundant protection system according to claim 5 is characterized in that: The rotating mechanism comprises an outer disk connected to the inner disk, and the outer disk is connected to the drum shaft.

7. The oil winch double stop safety redundant protection system according to claim 6 is characterized in that: The upper edge and the lower edge of the inner plate are both provided with slots, and the upper and lower protrusions are fixed to the slots by bolts respectively.

8. The oil winch double stop safety redundant protection system according to claim 7 is characterized in that: A sprocket is arranged on the roller shaft, and a chain is arranged between the sprocket and the outer disc.

9. The oil winch double stop safety redundant protection system according to claim 8 is characterized in that: A connecting shaft is arranged between the inner disk and the outer disk.

10. The oil winch double stop safety redundant protection system according to claim 1 is characterized in that: The main air intake pipe is provided with an air intake port.

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