Remote closed pressure regulating control valve group and system for power faucet

Abstract

The utility model provides a remote closed pressure regulating control valve group for a power faucet, which relates to the technical field of petroleum drilling and comprises a first pressure regulating valve and a second pressure regulating valve, a damping orifice plug is mounted at an inlet of the first pressure regulating valve, and an inlet of the second pressure regulating valve is connected with an outlet of the first pressure regulating valve. An outlet of the second pressure regulating valve is connected with an oil tank oil return opening. The remote pressure regulating device is ingenious in structural design, solves the problem of remote pressure regulation of the power faucet in the oil drilling and workover operation, is convenient for operators to quickly and conveniently regulate the system pressure according to requirements in the using process, and saves the operation time.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, and specifically, to a remote closed pressure regulating control valve group and system for a power swivel. Background Art

[0002] At present, in oil and gas downhole operations, a power swivel is required. However, currently, operators cannot remotely regulate the pressure of the hydraulic closed system of the power swivel, resulting in the problem of inconvenient pressure regulation of the bidirectional variable pump body. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a remote closed pressure regulating control valve group and system for a power swivel, so as to solve one or more of the problems raised in the above background art.

[0004] To achieve the above purpose, one of the purposes of the utility model is a remote pressure regulating control device for a power swivel closed system. The control valve group includes: a first pressure regulating valve and a second pressure regulating valve. A damping throttle plug is installed at the inlet of the first pressure regulating valve. The inlet of the second pressure regulating valve is connected to the outlet of the first pressure regulating valve, and the outlet of the second pressure regulating valve is connected to the oil tank return port. The damping throttle plug is used to control the flow rate through the first pressure regulating valve to achieve the response speed of the swash plate of the bidirectional variable pump.

[0005] As a preferred implementation, the first pressure regulating valve is a remote pressure regulating valve. The inlet of the first pressure regulating valve is connected to the pressure measuring port of the bidirectional variable pump, and the outlet of the first pressure regulating valve is connected to the servo chamber of the bidirectional variable pump. Specifically, the outlet of the first pressure regulating valve is connected to the positioning pressure oil port X3 of the servo chamber. Thus, the swash plate of the bidirectional variable pump is pushed back to the middle position or even pushed away from the middle position to maintain the system pressure.

[0006] As a preferred implementation, the second pressure regulating valve is a safety valve. The inlet of the second pressure regulating valve is connected to the outlet of the first pressure regulating valve, and the outlet of the second pressure regulating valve is connected to the oil tank return port, used to limit the inlet pressure of the servo chamber and prevent excessive pressure from causing pressure shock to the servo chamber to protect the servo chamber.

[0007] As a preferred implementation, the control valve group further includes an integrated valve block and a mounting panel. The first pressure regulating valve and the second pressure regulating valve are installed on the integrated valve block, and the integrated valve block is fixed on the mounting panel of the remote operation console through fixing bolts.

[0008] As a preferred implementation, the control valve port is provided with external interfaces A1, Pg, B1, and T port. The other end of the damping throttle plug is provided with interfaces A1 and Pg ports. The A1 port is connected to an external bidirectional variable pump, and the Pg port is a pressure measurement port for connecting an external pressure detection device. The inlet of the second pressure regulating valve is connected to the outlet of the first pressure regulating valve, and the output interface is the B1 port. The outlet of the second pressure regulating valve is the T port, which is connected to the oil tank return port.

[0009] In a second aspect, a remote closed-loop pressure regulating control system for a power swivel is proposed, which further includes a bidirectional variable pump and a bidirectional variable motor. The bidirectional variable pump is connected to the bidirectional variable motor. The bidirectional variable pump includes oil circuits A, B, a pressure measurement port MB for oil circuit B, and a positioning pressure oil port X3. The MB port of the bidirectional variable pump 1 is connected to the A1 port of the control valve group, the B1 port of the control valve group is connected to the X3 port of the bidirectional variable pump, the T port of the control valve group 2 is connected to the oil tank return port, and the Pg port of the control valve group is used to connect to an external pressure detection device 4 to display the current set pressure of the system.

[0010] As a preferred implementation, the bidirectional variable pump further includes: pilot control oil ports Y1 / Y2, the outlet Fe of the make-up oil pump, MA is the pressure measurement port of oil circuit A, the make-up oil suction port S, the make-up oil system pressure measurement port G; X3 / X4 are positioning pressure oil ports.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] Facing the problems in actual oil drilling, the present utility model solves the problem of remote pressure regulation of the power swivel in oil drilling and workover operations, facilitating the operator to quickly and conveniently adjust the system pressure according to needs during use, saving operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a remote closed-loop pressure regulating control valve group for a power swivel of the present utility model;

[0014] Figure 2 It is a structural schematic diagram of a remote closed-loop pressure regulating control valve group for a power swivel of the present utility model;

[0015] Figure 3 It is a structural schematic diagram of another perspective of a remote closed-loop pressure regulating control valve group for a power swivel of the present utility model;

[0016] Figure 4 It is a schematic diagram of a remote closed-loop pressure regulating control system for a power swivel of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figures 1-4 shown, the present application provides a remote closed-loop pressure regulating control valve group for a power swivel. A damping throttle plug 2.1, a first pressure regulating valve 2.2, a second pressure regulating valve 2.3, an integrated valve block 2.4, a mounting panel 2.5 and fixing bolts 2.6 constitute the control valve group 2. The damping throttle plug 2.1 is installed at the inlet of the first pressure regulating valve to limit the flow rate through the first pressure regulating valve 2.2 to achieve the response speed of the swash plate of the connected bidirectional variable pump 1. The outlet of the first pressure regulating valve 2.2 is connected to the servo chamber of the bidirectional variable pump 1. In order to protect the servo chamber and prevent pressure shock on the servo chamber caused by excessive pressure, a second pressure regulating valve 2.3 is added. The inlet of the second pressure regulating valve 2.3 is connected to the outlet of the first pressure regulating valve 2.2, and the outlet of the second pressure regulating valve 2.3 is connected to the oil tank return port.

[0019] The control valve group further includes an integrated valve block 2.4 and a mounting panel 2.5. The first pressure regulating valve and the second pressure regulating valve are installed on the integrated valve block 2.4, and the integrated valve block 2.4 is fixed on the mounting panel 2.5 of the remote operation console through the fixing bolts 2.6. It should be noted that the remote operation console here refers to centralized control operation.

[0020] The control valve port is provided with external interfaces A1, Pg, B1 and T port. The other end of the damping throttle plug 2.1 is provided with interfaces A1 and Pg port. The A1 port is connected to the external bidirectional variable pump 1, and the Pg port is a pressure measurement port for connecting an external pressure detection device 4. The inlet of the second pressure regulating valve 2.3 is connected to the outlet of the first pressure regulating valve 2.2 and then the output interface is the B1 port, and the outlet of the second pressure regulating valve 2.3 is the T port, which is connected to the oil tank return port.

[0021] On the other hand, the present application also provides a remote closed-loop pressure regulating control system for a power swivel. The bidirectional variable pump 1 and the bidirectional variable motor 3 constitute a closed-loop hydraulic system. In order to achieve remote pressure regulation of the hydraulic system, a control valve group 2 is added at the pressure measurement port of the working oil circuit, and single-direction remote pressure regulation or bidirectional remote pressure regulation can be achieved.

[0022] Specifically, the bidirectional variable pump 1 is connected to the bidirectional variable motor 3. The bidirectional variable pump 1 includes an oil circuit A, an oil circuit B, a pressure measuring port MB for the oil circuit B, and a positioning pressure oil port X3. The MB port of the bidirectional variable pump 1 is connected to the A1 port of the control valve group. The B1 port of the control valve group 2 is connected to the X3 port of the bidirectional variable pump 1. The T port of the control valve group 2 is connected to the oil tank return port. The Pg port of the control valve group is used to connect to the external pressure detection device 4 to display the current set pressure of the system.

[0023] The bidirectional variable pump 1 further includes: pilot control oil ports Y1 / Y2, make-up oil pump outlet Fe, MA is the pressure measuring port for the oil circuit A, make-up oil suction port S, make-up oil system pressure measuring port G; X3 / X4 are positioning pressure oil ports.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote closed pressure regulating control valve group for a power faucet, characterized in that: The control valve group comprises: a first pressure regulating valve (2.2) and a second pressure regulating valve (2.3); a damping throttle plug (2.1) is installed at the inlet of the first pressure regulating valve (2.2); the inlet of the second pressure regulating valve (2.3) is connected to the outlet of the first pressure regulating valve (2.2); and the outlet of the second pressure regulating valve (2.3) is connected to the oil return port of the oil tank.

2. A remote closed pressure regulating control valve group for a power faucet as claimed in claim 1, characterized in that: The control valve group further comprises an integrated valve block (2.4) and a mounting panel (2.5); the first pressure regulating valve and the second pressure regulating valve are mounted on the integrated valve block (2.4); and the integrated valve block (2.4) is fixed to the mounting panel (2.5) of the remote operating console via fixing bolts (2.6).

3. A remote closed pressure regulating control valve group for a power faucet as claimed in claim 2, characterized in that: The first pressure regulating valve (2.2) is a remote pressure regulating valve, the inlet of the first pressure regulating valve (2.2) is connected to the pressure measuring port of the bidirectional variable pump, and the outlet of the first pressure regulating valve (2.2) is connected to the servo chamber of the bidirectional variable pump.

4. A remote closed pressure regulating control valve group for a power faucet as claimed in claim 1, characterized in that: The second pressure regulating valve (2.3) is a safety valve.

5. A remote closed pressure regulating control valve group for a power faucet as claimed in claim 3, characterized in that: The control valve group is provided with external interfaces A1, Pg, B1 and T port, the other end of the damping throttle plug (2.1) is provided with interfaces A1 and Pg port, the A1 port is connected to an external bidirectional variable pump (1), the Pg port is a pressure measuring port for connecting to an external pressure detection device (4), the inlet of the second pressure regulating valve (2.3) is connected to the outlet of the first pressure regulating valve (2.2) and the output interface is the B1 port, the outlet of the second pressure regulating valve (2.3) is the T port, which is connected to the oil return port of the oil tank.

6. A remote closed pressure regulating control system for a power faucet, using a remote closed pressure regulating control valve group for a power faucet as claimed in any one of claims 1 to 5, characterized in that: The invention also comprises a bidirectional variable pump (1) and a bidirectional variable motor (3), wherein the bidirectional variable pump (1) is connected to the bidirectional variable motor (3), the bidirectional variable pump (1) comprises an oil circuit A, an oil circuit B, an MB port for measuring the pressure of the oil circuit B, and a positioning pressure oil port X3, the MB port of the bidirectional variable pump (1) is connected to the A1 port of the control valve group, the B1 port of the control valve group (2) is connected to the X3 port of the bidirectional variable pump (1), the T port of the control valve group (2) is connected to the oil return port of the oil tank, and the Pg port of the control valve group is used to connect to an external pressure detection device (4) to display the current set pressure of the system.

7. A remote closed pressure regulating control system for a power faucet as claimed in claim 6, characterized in that: The bidirectional variable pump (1) further comprises: a pilot control oil port Y1 / Y2, an oil replenishment pump outlet Fe, MA as an oil circuit A pressure measuring port, an oil replenishment suction port S, and an oil replenishment system pressure measuring port G; X3 / X4 are positioning pressure oil ports.

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