Transposition operation system and drill rod power tongs

Abstract

The utility model belongs to the technical field of design, manufacture and control of petroleum equipment, and particularly relates to a transposition operation system and a drill rod power tong, the system comprises a hydraulic control reversing valve, the oil inlet end and the oil outlet end of the hydraulic control reversing valve are respectively connected with an oil inlet pipe and an oil outlet pipe, the working end of the hydraulic control reversing valve is provided with a port A and a port B, and the port A and the port B are connected with the hydraulic control reversing valve. The hydraulic control reversing valve, the port A and the port B form a high-position operation system through an oil inlet pipe and an oil outlet pipe, the control end of the hydraulic control reversing valve is connected with a control loop and connected with a pneumatic control reversing valve through the control loop, and the pneumatic control reversing valve, the port A and the port B form a low-position operation system through the control loop and the hydraulic control reversing valve. The high-low position switching device realizes high-low position switching operation, is easier to adapt to flexible operation of actual working conditions, meets the requirement of remote operation, solves the problem of limitation of high-low position switching operation caused by mechanical arrangement, and ensures the safety and practicability of operation of the drill rod power tongs.

Description

Technical Field

[0001] The utility model belongs to the technical field of the design, manufacture and control of oil equipment, and particularly relates to a transposition operating system and a drill pipe power tongs. Background Technique

[0002] In the oil drilling industry, in order to improve the mechanization degree, reduce the labor load of the wellhead operators and ensure the personal safety of the operators, drill pipe power tongs are generally equipped at the wellhead position. When the existing drill pipe power tongs are in use, in the case of encountering heavy drill pipes, hydraulic flip-over elevators, externally mounted pneumatic chucks or three-piece drill pipe slips, etc., it is still necessary to lift them to a certain height for operation. In this case, it is very inconvenient for the operator to operate the drill pipe power tongs at the original height. If operators with a relatively tall stature are selected, the use limitations of the drill pipe power tongs will increase.

[0003] There are studies on the inconvenient operation due to the position change of the drill pipe power tongs in the prior art. For example, in the patent application CN210068016U - A power tong with a multi-position operating mechanism, by changing the operating positions of the hydraulic motor control valve, the lifting hydraulic cylinder control valve and the air valve, the problem of inconvenient operation of the operator caused by the position change of the existing drill pipe power tongs is solved. However, the operating positions of the existing power tongs are only realized through mechanical settings, but it is very difficult to flexibly ensure the high and low position operations of the drill pipe power tongs under actual working conditions, and it is difficult to meet the requirements of remote operation of the drill pipe power tongs, which seriously affects the safety and practicability of the operation of the drill pipe power tongs. Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a transposition operating system and a drill pipe power tongs to solve the problems in the above background technique that it is very difficult to flexibly ensure the high and low position operations of the power tongs with multi-position operation under actual working conditions, it is difficult to meet the requirements of remote operation of the drill pipe power tongs, and it seriously affects the safety and practicability of the operation of the drill pipe power tongs.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A transposition operating system includes a hydraulic control reversing valve. The oil inlet end and the oil outlet end of the hydraulic control reversing valve are respectively connected with an oil inlet pipe and an oil outlet pipe. The working end of the hydraulic control reversing valve is provided with a port A and a port B. The hydraulic control reversing valve and the port A and the port B constitute a high-position operating system through the oil inlet pipe and the oil outlet pipe. The control end of the hydraulic control reversing valve is connected with a control circuit and is connected with a pneumatic control reversing valve through the control circuit. The pneumatic control reversing valve and the port A and the port B constitute a low-position operating system through the control circuit and the hydraulic control reversing valve.

[0006] Further, a pre-pressure valve is connected to the inlet pipe and is pre-pressure connected to the inlet end of the hydraulic control directional valve through the pre-pressure valve. A high-position operation port is provided on the hydraulic control directional valve. The high-position operation port forms a high-position operating system with the A port and the B port through the hydraulic control directional valve, the inlet pipe and the outlet pipe.

[0007] Further, the control loop includes a pneumatic-hydraulic control directional valve and a bleed valve. The inlet end of the bleed valve is connected to the outlet end of the pneumatic control directional valve. The outlet end of the bleed valve is connected to the inlet end of the pneumatic-hydraulic control directional valve. The inlet liquid end of the pneumatic-hydraulic control directional valve is pre-pressure connected to the inlet pipe through the pre-pressure valve and is simultaneously connected to the outlet end of the pneumatic control directional valve through the bleed valve. The outlet liquid end of the pneumatic-hydraulic control directional valve is connected to the control end of the hydraulic control directional valve. The pneumatic-hydraulic control directional valve is connected or blocked from the inlet pipe through the bleed valve and the pneumatic control directional valve.

[0008] Further, an inlet air pipe is provided at the inlet end of the pneumatic control directional valve. The outlet end of the pneumatic control directional valve is connected to the inlet end of the pneumatic-hydraulic control directional valve through the bleed valve. A low-position operation port is provided on the pneumatic control directional valve. The low-position operation port forms a low-position operating system with the A port and the B port through the pneumatic control directional valve, the bleed valve, the pneumatic-hydraulic control directional valve, the inlet pipe and the hydraulic control directional valve.

[0009] In addition to the above technical solutions, there is also a drill pipe power tong with this position-changing operating system.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model adopts a direct or indirect control method, enabling the position-changing operating system to have a function similar to a double-control switch, so that the drill pipe power tong can flexibly perform high-low position conversion operations in actual working conditions, effectively avoiding the limitation problem of high-low position conversion operations caused by mechanical settings, effectively reducing the working intensity of operators, meeting the use requirements of different drilling working conditions. By setting up a high-position operating system with the hydraulic control directional valve and the A port and the B port through the inlet pipe and the outlet pipe, the drill pipe power tong is more convenient and fast during high-position operation, effectively improving the stability and safety of the high-position operation of the drill pipe power tong. By setting up a low-position operating system with the pneumatic control directional valve and the A port and the B port through the control loop and the hydraulic control directional valve, the drill pipe power tong is also more convenient and fast during low-position operation, effectively improving the stability and safety of the low-position operation of the drill pipe power tong. Using the hose connection method can not only make the high-low position conversion operation of the drill pipe power tong more reliable and flexible, but also meet the requirements of remote operation of the drill pipe power tong, thus ensuring the safety and practicality of the operation of the drill pipe power tong;

[0012] 2. The present utility model uses a pneumatically controlled hydraulic directional valve and a bleed valve as a pneumatically controlled hydraulic control circuit, enabling the pneumatically controlled hydraulic directional valve to accurately control the oil passage of the inlet pipe under the action of the bleed valve, thereby enabling the pneumatically controlled directional valve to accurately control the hydraulic directional valve for low-position operation, effectively avoiding the uncertainty problem of manual operation caused by mechanical settings, and ensuring the stability of the low-position operation of the drill pipe power tong under actual working conditions;

[0013] 3. The present utility model utilizes the principle similar to that of a double-control switch, not only enabling the high-low position conversion operation of the drill pipe power tong to have the characteristics of circuit control, making it easier to adapt to the flexibility requirements of actual working conditions, but also enabling the drill pipe power tong to meet the requirements of remote operation while having the characteristics of circuit control. At the same time, it effectively solves the limitation problem of high-low position conversion operation caused by mechanical settings, thereby ensuring the safety and practicality of the operation of the drill pipe power tong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the control circuit of the position conversion operating system of the present utility model;

[0015] Figure 2 is Figure 1 a schematic diagram of the control circuit of the system under high-position operation in

[0016] Figure 3 is Figure 1 a schematic diagram of the control circuit of the system under low-position operation in

[0017] Figure 4 is Figure 1 a schematic diagram of the oil circuit of the pneumatically controlled hydraulic directional valve in

[0018] Wherein: 1, hydraulic directional valve; 2, pneumatically controlled directional valve; 3, control circuit; 301, pneumatically controlled hydraulic directional valve; 302, bleed valve; 4, inlet pipe; 5, outlet pipe; 6, pre-pressure valve; 7, port A; 8, port B; 9, high-position operation port; 10, inlet air pipe; 11, low-position operation port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following embodiments are used to further illustrate the content of the present utility model and do not limit the application of the present utility model. Embodiment 1:

[0020] Please refer to Figures 1-4 , this embodiment provides a position conversion operating system, including a hydraulic directional valve 1 for high-position operation and a pneumatically controlled directional valve 2 for low-position operation. The hydraulic directional valve 1 controls the oil circuit of the drill pipe power tong through separate operation, and the pneumatically controlled directional valve 2 controls the oil circuit of the drill pipe power tong by operating the hydraulic directional valve 1 through the control circuit 3.

[0021] Please refer to the high-level operating system Figures 1-2 An oil inlet end and an oil outlet end of the hydraulic control reversing valve 1 are respectively connected with an oil inlet pipe 4 for hydraulic oil input and an oil outlet pipe 5 for hydraulic oil output. A pre-pressure valve 6 for pre-pressure is connected to the oil inlet pipe 4 and is pre-pressure connected to the oil inlet end of the hydraulic control reversing valve 1 through the pre-pressure valve 6;

[0022] A working end of the hydraulic control reversing valve 1 is provided with a port A 7 and a port B 8. The hydraulic control reversing valve 1 is also provided with a high-level operation port 9 for high-level operation. The high-level operation port 9 forms a high-level operating system with the port A 7 and the port B 8 through the hydraulic control reversing valve 1, the oil inlet pipe 4 and the oil outlet pipe 5.

[0023] Please refer to the low-level operating system Figure 1 and Figures 3-4 The control loop 3 includes a pneumatic control hydraulic reversing valve 301 for pneumatic-liquid control and a gas release valve 302 for rapid gas release. An air inlet end of the gas release valve 302 is connected to an air outlet end of the pneumatic control reversing valve 2, and an air outlet end of the gas release valve 302 is connected to an air inlet end of the pneumatic control hydraulic reversing valve 301;

[0024] A liquid inlet end of the pneumatic control hydraulic reversing valve 301 is pre-pressure connected to the oil inlet pipe 4 through the pre-pressure valve 6 and is simultaneously connected to the air outlet end of the pneumatic control reversing valve 2 through the gas release valve 302. A liquid outlet end of the pneumatic control hydraulic reversing valve 301 is connected to a control end of the hydraulic control reversing valve 1. The pneumatic control hydraulic reversing valve 301 is connected or blocked from the oil inlet pipe 4 through the gas release valve 302 and the pneumatic control reversing valve 2;

[0025] An air inlet end of the pneumatic control reversing valve 2 is provided with an air inlet pipe 10 for gas entry. An air outlet end of the pneumatic control reversing valve 2 is connected to an air inlet end of the pneumatic control hydraulic reversing valve 301 through the gas release valve 302. The pneumatic control reversing valve 2 is provided with a low-level operation port 11 for low-level operation. The low-level operation port 11 forms a low-level operating system with the port A 7 and the port B 8 through the pneumatic control reversing valve 2, the gas release valve 302, the pneumatic control hydraulic reversing valve 301, the oil inlet pipe 4 and the hydraulic control reversing valve 1.

[0026] Working principle and usage process of this embodiment: As Figures 1-4 shown in the schematic diagram, after the conversion operating system is assembled, an operator installs the entire assembled conversion operating system on a drill pipe power tong (the functions and structures of conventional equipment such as drill pipe power tongs are well-known in the art, and the connection settings are also common knowledge, so no further description is given here and it is not shown in the drawings). The high and low position conversion operation of the drill pipe power tong can be realized, which is more adaptable to the flexibility requirements of the actual working conditions. At the same time, it also meets the requirements of remote operation, solves the limitation problem of high and low position conversion operation caused by mechanical settings, and further ensures the safety and practicality of the drill pipe power tong operation;

[0027] When the drill pipe power tong needs to be operated at a high position, the operator only needs to operate the high-position operation port 9 on the hydraulic control reversing valve 1. At this time, the hydraulic oil is transported into the hydraulic control reversing valve 1 through the inlet pipe 4 and the pre-pressure valve 6. The hydraulic control reversing valve 1 controls the high-position operation of port A 7 and port B 8 under the pressure of the hydraulic oil. After the high-position operation is completed, the hydraulic oil in the hydraulic control reversing valve 1 will flow back to the hydraulic oil tank (the functions and structures of conventional equipment such as the hydraulic oil tank are well-known in the art, and the connection settings are also common knowledge, so no more description is given here and it is not shown in the attached drawings) through the outlet pipe 5;

[0028] When the drill pipe power tong needs to be operated at a low position, the operator only needs to operate the low-position operation port 11 on the pneumatic control reversing valve 2. At this time, the gas will enter the pneumatic control reversing valve 2 through the inlet pipe 10 and then quickly enter the pneumatic control hydraulic reversing valve 301 through the air release valve 302. At the same time, the pneumatic control hydraulic reversing valve 301 will transport the hydraulic oil through the inlet pipe 4 and the pre-pressure valve 6 into the pneumatic control hydraulic reversing valve 301 under the action of the gas, and then be transported to the hydraulic control reversing valve 1 by the pneumatic control hydraulic reversing valve 301. The hydraulic control reversing valve 1 controls the low-position operation of port A 7 and port B 8 under the pressure of the hydraulic oil. After the low-position operation is completed, the hydraulic oil in the hydraulic control reversing valve 1 will flow back to the hydraulic oil tank through the outlet pipe 5, and the hydraulic oil in the inlet pipe 4 will be blocked by the gas and cannot enter the pneumatic control hydraulic reversing valve 301, thus ensuring the safety of the low-position operation of the drill pipe power tong. Embodiment 2:

[0029] Please refer to Figures 1-4 , as another object of the present invention, a drill pipe power tong is provided. The drill pipe power tong is provided with the transposition operating system described above. Therefore, the drill pipe power tong can obtain any beneficial effects of the transposition operating system described above, which will not be elaborated here.

Claims

1. A transposition operating system, comprising a hydraulically controlled reversing valve, characterized in that: The oil inlet end and the oil outlet end of the hydraulically controlled reversing valve are respectively connected to the oil inlet pipe and the oil outlet pipe, and the working end of the hydraulically controlled reversing valve is provided with an A port and a B port. The hydraulically controlled reversing valve forms a high-level operating system with the A port and the B port through the oil inlet pipe and the oil outlet pipe. The control end of the hydraulically controlled reversing valve is connected to a control loop and is connected to an air-controlled reversing valve through the control loop. The air-controlled reversing valve forms a low-level operating system with the A port and the B port through the control loop and the hydraulically controlled reversing valve.

2. A transposition operating system according to claim 1, characterized in that: The oil inlet pipe is connected with a pre-pressure valve and is pre-pressure-connected with the oil inlet end of the hydraulically controlled reversing valve through the pre-pressure valve. The hydraulically controlled reversing valve is provided with a high-position operation port.

3. A transposition operating system according to claim 2, characterized in that: The high-position operation port forms a high-position operation system with the A port and the B port through a hydraulically controlled reversing valve, an oil inlet pipe and an oil outlet pipe.

4. A transposition operating system according to claim 1, characterized in that: The control circuit includes an air-controlled liquid reversing valve and an air release valve, wherein the air inlet end of the air release valve is connected to the air outlet end of the air-controlled reversing valve, and the air outlet end of the air release valve is connected to the air inlet end of the air-controlled liquid reversing valve.

5. A transposition operating system according to claim 4, characterized in that: The liquid inlet end of the air-controlled liquid reversing valve is pre-pressure-connected to the oil inlet pipe through a pre-pressure valve and is connected to the air outlet end of the air-controlled reversing valve through an air release valve. The liquid outlet end of the air-controlled liquid reversing valve is connected to the control end of the liquid-controlled reversing valve.

6. A transposition operating system according to claim 5, characterized in that: The air-controlled liquid reversing valve is connected or blocked with the oil inlet pipe through the air release valve and the air-controlled reversing valve.

7. A transposition operating system according to claim 6, characterized in that: The air inlet end of the air-controlled reversing valve is provided with an air inlet pipe, and the air outlet end of the air-controlled reversing valve is connected to the air inlet end of the air-controlled liquid reversing valve through an air release valve.

8. A transposition operating system according to claim 7, characterized in that: The air-controlled reversing valve is provided with a low-position operation port.

9. A transposition operating system according to claim 8, characterized in that: The low-position operation port forms a low-position operation system with the A port and the B port through the air-controlled reversing valve, the air release valve, the air-controlled liquid reversing valve, the oil inlet pipe and the liquid-controlled reversing valve.

10. A drill pipe power tong, characterized in that: It comprises a transposition operating system as described in any one of claims 1-9.

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