Hydraulic control device of environment-friendly rotary blowout preventer

Abstract

The utility model discloses a hydraulic control device of an environment-friendly rotary blowout preventer, relates to the technical field of petroleum drilling and production, and aims to solve the problems that an existing hydraulic control device is insufficient in pressurization and energy storage, and the working stability needs to be further improved. An oil tank, a hydraulic pump set and an energy accumulator are installed on the bottom end face of the interior of the frame, a liquid outlet port of the oil tank communicates with a liquid inlet port of the hydraulic pump set through a hydraulic pipeline, a liquid outlet port of the hydraulic pump set communicates with a liquid inlet port of the energy accumulator through a hydraulic pipeline, and an installation base is arranged on the bottom end face of the interior of the frame. And a manual steering valve and a hydraulic lock are mounted on the upper end surface of the mounting seat. The effects that pressurization and energy storage can be conducted on the hydraulic oil, switching operation can be conducted in the face of power failure, meanwhile, backflow of the hydraulic oil can be avoided in time when the pipeline is broken, it is ensured that the hydraulic oil cylinder is kept in the original state, and the working stability and safety are high are achieved.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and production technology, and in particular to a hydraulic control device for an environmentally friendly rotary blowout preventer. Background Technology

[0002] Currently, underbalanced drilling technology has matured, and its effectiveness in discovering and protecting oil and gas reservoirs and improving drilling speed is widely recognized. With the rapid development of the petroleum industry, underbalanced drilling technology has become a preferred technology in the oil drilling field. At the same time, the country's vigorous promotion of environmental remediation has placed higher demands on the production equipment of the petroleum industry. The hydraulic control device of the environmentally friendly rotary blowout preventer provides hydraulic power for the cylinder switch of the environmentally friendly rotary blowout preventer and monitors the cylinder stroke in real time.

[0003] Existing hydraulic control devices have shortcomings in pressurization and energy storage, and their operational stability needs further improvement. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly rotary blowout preventer hydraulic control device that can pressurize and store hydraulic oil, perform a switch operation in the event of a power outage, and promptly prevent hydraulic oil backflow in the event of a pipeline rupture, ensuring that the hydraulic cylinder maintains its original state, with high operational stability and safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The hydraulic control device of the environmentally friendly rotary blowout preventer includes a frame. An oil tank, a hydraulic pump unit, and an accumulator are installed on the bottom surface inside the frame. The outlet port of the oil tank is connected to the inlet port of the hydraulic pump unit through a hydraulic pipeline, and the outlet port of the hydraulic pump unit is connected to the inlet port of the accumulator through a hydraulic pipeline.

[0007] By adopting the above technical solution, hydraulic oil can be pressurized and stored, which can effectively improve the overall working stability.

[0008] Furthermore, a mounting base is provided on the inner bottom surface of the frame, and a manual steering valve and a hydraulic lock are installed on the upper surface of the mounting base.

[0009] By adopting the above technical solution, manual control operations can be performed.

[0010] Furthermore, the outlet port of the accumulator is connected to the inlet port of the manual steering valve inlet line via a hydraulic line, and the outlet port of the manual steering valve inlet line is connected to the hydraulic cylinder via a hydraulic line.

[0011] By adopting the above technical solution, the hydraulic oil circuit can be switched using a manual steering valve, which can effectively enable manual control of the external hydraulic cylinder.

[0012] Furthermore, the hydraulic lock is installed in the hydraulic line between the hydraulic cylinder and the inlet port of the manual steering valve return line.

[0013] By adopting the above technical solution, a hydraulic lock can be used to prevent hydraulic oil backflow and ensure the stability of the external hydraulic cylinder.

[0014] Furthermore, multiple winding frames are fixedly installed on the inner top surface of the frame by bolts.

[0015] By adopting the above technical solution, it is easy to wrap and store the oil pipe.

[0016] Furthermore, an electrical control cabinet is mounted on the inner top surface of the frame via a bracket.

[0017] By adopting the above technical solution, effective electronic control operation can be achieved.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This utility model has a compact and simple structure, and a firm and reliable connection;

[0020] 2. During operation, this utility model can use a hydraulic pump set to pump hydraulic oil from inside the oil tank and then deliver the hydraulic oil to the accumulator. The accumulator can increase the oil pressure of the hydraulic oil and use the increased hydraulic oil to control the external hydraulic cylinder, which can improve control stability. At the same time, the accumulator can be used to perform a switch operation in the event of a power outage by using the high-pressure hydraulic oil stored inside the accumulator.

[0021] 3. By installing a hydraulic lock in the return oil line of the external hydraulic cylinder, this utility model can effectively close the return oil line in case of a rupture in the internal pipeline during subsequent use, preventing the hydraulic pressure in the external hydraulic cylinder from flowing back into the oil tank, thus improving the working stability and safety of the device. Attached Figure Description

[0022] Figure 1 This is a first-view view of the internal structure of this utility model;

[0023] Figure 2 This is a second-view view of the internal structure of this utility model.

[0024] In the diagram: 1. Frame; 2. Oil tank; 3. Manual steering valve; 4. Hydraulic lock; 5. Winding frame; 6. Electrical control cabinet; 7. Hydraulic pump set; 8. Accumulator. Detailed Implementation

[0025] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1 , Figure 2 The hydraulic control device of the environmentally friendly rotary blowout preventer includes a frame 1. An oil tank 2, a hydraulic pump group 7, and an accumulator 8 are installed on the bottom surface of the frame 1. The outlet port of the oil tank 2 is connected to the inlet port of the hydraulic pump group 7 through a hydraulic pipeline, and the outlet port of the hydraulic pump group 7 is connected to the inlet port of the accumulator 8 through a hydraulic pipeline. Multiple winding frames 5 are fixedly installed on the top surface of the frame 1 with bolts. An electrical control cabinet 6 is installed on the top surface of the frame 1 through a bracket. During operation, the hydraulic pump group 7 pumps hydraulic oil from the oil tank 2 and then delivers the hydraulic oil to the accumulator 8. The accumulator 8 can pressurize the hydraulic oil and use the pressurized hydraulic oil to control the external hydraulic cylinder, which can improve control stability. At the same time, the accumulator 8 can perform a one-time switching operation using the high-pressure hydraulic oil stored inside the accumulator 8 in the event of a power outage.

[0027] Reference Figure 1 A mounting base is provided on the bottom surface of the frame 1, and a manual steering valve 3 and a hydraulic lock 4 are installed on the upper surface of the mounting base. The outlet port of the accumulator 8 is connected to the inlet port of the inlet line of the manual steering valve 3 through a hydraulic line. The outlet port of the inlet line of the manual steering valve 3 is connected to the hydraulic cylinder through a hydraulic line. When the power is off, the oil supply line can be switched by using the manual steering valve 3. At this time, the hydraulic oil inside the accumulator 8 can be used to realize one opening and closing operation of the external hydraulic cylinder.

[0028] Reference Figure 1 The hydraulic lock 4 is installed in the hydraulic pipeline between the hydraulic cylinder and the return line inlet port of the manual steering valve 3. By installing the hydraulic lock 4 in the return line of the external hydraulic cylinder, in the event of a rupture in the internal pipeline during subsequent use, the hydraulic lock 4 can effectively close the return line, preventing the hydraulic pressure in the external hydraulic cylinder from flowing back into the oil tank 2, thus improving the working stability and safety of the device.

[0029] Working Principle: In use, the device is first installed in the designated location and connected to the external hydraulic cylinder via a pipeline. During operation, the hydraulic pump unit 7 pumps hydraulic oil from the oil tank 2 and then delivers it to the accumulator 8. The accumulator 8 pressurizes the hydraulic oil, using the pressurized oil to control the external hydraulic cylinder. In the event of a power outage, the manual directional valve 3 switches the oil supply line. At this time, the hydraulic oil inside the accumulator 8 can be used to perform one opening and closing operation of the external hydraulic cylinder. Simultaneously, by installing a hydraulic lock 4 in the return oil line of the external hydraulic cylinder, in the event of a rupture in the internal pipeline, the hydraulic lock 4 can effectively close the return oil line, preventing hydraulic pressure from flowing back into the oil tank 2, thus improving the device's operational stability and safety.

[0030] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hydraulic control device for an environmentally friendly rotary blowout preventer, comprising a frame (1), characterized in that: An oil tank (2), a hydraulic pump assembly (7), and an accumulator (8) are installed on the inner bottom surface of the frame (1). The outlet port of the oil tank (2) is connected to the inlet port of the hydraulic pump assembly (7) through a hydraulic pipeline, and the outlet port of the hydraulic pump assembly (7) is connected to the inlet port of the accumulator (8) through a hydraulic pipeline.

2. The hydraulic control device for the environmentally friendly rotary blowout preventer according to claim 1, characterized in that: The frame (1) has a mounting base on its inner bottom surface, and a manual steering valve (3) and a hydraulic lock (4) are mounted on the upper surface of the mounting base.

3. The hydraulic control device for the environmentally friendly rotary blowout preventer according to claim 2, characterized in that: The outlet port of the accumulator (8) is connected to the inlet port of the manual steering valve (3) via a hydraulic line, and the outlet port of the manual steering valve (3) is connected to the hydraulic cylinder via a hydraulic line.

4. The hydraulic control device for the environmentally friendly rotary blowout preventer according to claim 2, characterized in that: The hydraulic lock (4) is installed in the hydraulic pipeline between the hydraulic cylinder and the inlet port of the return line of the manual steering valve (3).

5. The hydraulic control device for the environmentally friendly rotary blowout preventer according to claim 1, characterized in that: Multiple winding frames (5) are fixedly installed on the inner top surface of the frame (1) by bolts.

6. The hydraulic control device for the environmentally friendly rotary blowout preventer according to claim 1, characterized in that: An electrical control cabinet (6) is mounted on the inner top surface of the frame (1) via a bracket.

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