Rotary power output flexible shaft of hydraulic clamp

Abstract

The utility model provides a hydraulic clamp rotating power output flexible shaft which comprises a flexible shaft core, one end of the flexible shaft core is provided with a power input connector through a first connecting piece, the other end of the flexible shaft core is provided with a power output connector through a second connecting piece, and the end of the power output connector is provided with a groove matched with a screw. When screws on a well mouth, a well control device and a well mouth operation device are detached, the power input connector is installed in the driving device, the groove of the power output connector is installed on the screws, and when the driving device is driven, the driving device drives the power output connector to rotate through the power input connector to detach the screws. When the screw on an oil well operation site is disassembled, the power input connector is installed in the driving equipment, the groove of the power output connector is installed on the screw, and the driving equipment drives the power output connector to rotate through the power input connector to disassemble the screw.

Description

Technical Field

[0001] The utility model relates to the technical field of screw disassembly, in particular to a hydraulic pliers rotary power output flexible shaft. Background Art

[0002] In recent years, secondary well plugging operations have been frequent, and a perforator is needed to pre-drill holes in the surface casing and the oil layer casing for pressure relief. Currently, manual perforators are used on site for pressure relief, and the working time is usually 3-4 hours, with low work efficiency and high labor intensity.

[0003] According to the requirements of underground operation construction, various types of wellheads, well control equipment and wellhead operation equipment need to be frequently replaced and assembled. The installation and removal of screws are all done manually, especially when removing rusted screws from old wellheads. This brings great trouble to on-site operators and affects the operation cycle.

[0004] Due to the strict safety and explosion-proof requirements at oil well operation sites, it is impossible to use machines such as electric drilling or electric screw removal. Therefore, there is a problem of low efficiency in screw removal. Utility Model Content

[0005] The utility model aims to provide a hydraulic pliers rotary power output flexible shaft to solve the technical defect that electric drilling or electric screw removal tools cannot be used at the oil well operation site, resulting in low efficiency.

[0006] In order to achieve the purpose of the utility model, the utility model is implemented through the following technical solutions:

[0007] A hydraulic pliers rotary power output flexible shaft, comprising:

[0008] A flexible shaft core, one end of which is provided with a power input connector through a first connector, and the other end of which is provided with a power output connector through a second connector, wherein a groove matching the screw is provided at the end of the power output connector;

[0009] Among them, when removing the screws on the wellhead, well control equipment and wellhead operating equipment, the power input connector is installed in the driving device, and the groove of the power output connector is installed on the screw. When the driving device is driven, the driving device drives the power output connector to rotate through the power input connector to remove the screw.

[0010] Furthermore, a hose is sleeved on the outer side of the flexible shaft core, and two ends of the hose are respectively connected to the first connector and the second connector.

[0011] Furthermore, the hose is provided with a steel winding layer, an inner rubber layer, a wire mesh braided layer and an outer cloth-type rubber layer, and the steel winding layer is in contact with the outer side of the soft shaft core.

[0012] Furthermore, the strip steel winding layer, the inner rubber layer, the wire mesh braided layer and the outer cloth-type rubber layer are arranged in sequence from the inside to the outside in the hose and are fixedly connected to each other.

[0013] Furthermore, two ends of the hose are fixedly connected to the first connector and the second connector by riveting respectively.

[0014] Furthermore, bearing sleeves are provided on the outer sides of the first connecting member and the second connecting member, and the bearing sleeves are rotatably connected to the flexible shaft core.

[0015] Furthermore, the power input connector has the same outer diameter as the first connector.

[0016] The beneficial effects of the utility model are:

[0017] 1. By arranging a power input joint and a power output joint at the end of the flexible shaft, when removing the screws at the oil well operation site, the power input joint is installed in the driving device, the groove of the power output joint is installed on the screw, and then the driving device is started. The driving device drives the power output joint to rotate through the power input joint to remove the screw, which not only improves the disassembly efficiency, but also meets the safety and explosion-proof requirements of the oil well operation site.

[0018] 2. By installing a hose on the outside of the flexible shaft core, the flexible shaft core can be protected and its service life can be extended.

[0019] 3. The steel winding layer is in direct contact with the outside of the flexible shaft core, which not only enhances the overall structural strength, but also effectively resists external pressure and impact, and improves the pressure resistance and durability of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a hydraulic pliers rotary power output flexible shaft provided by the utility model;

[0021] Figure 2 A schematic diagram of a hose structure in a rotary power output flexible shaft structure of a hydraulic pliers provided by the utility model;

[0022] Among them: 1. power input connector; 2. connector one; 3. flexible shaft core; 4. hose; 41. steel winding layer; 42. inner rubber layer; 43. steel wire mesh braided layer; 44. outer cloth-type rubber layer; 5. connector two; 6. power output connector. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In recent years, secondary well plugging operations have been frequent, and a perforator is needed to pre-drill holes in the surface casing and the oil layer casing for pressure relief. Currently, manual perforators are used on site for pressure relief, and the working time is usually 3-4 hours, with low work efficiency and high labor intensity.

[0030] According to the requirements of underground operation construction, various types of wellheads, well control equipment and wellhead operation equipment need to be frequently replaced and assembled. The installation and removal of screws are all done manually, especially when removing rusted screws from old wellheads. This brings great trouble to on-site operators and affects the operation cycle.

[0031] Due to the strict safety and explosion-proof requirements at oil well operation sites, it is impossible to use machines such as electric drilling or electric screw removal. Therefore, there is a problem of low efficiency in screw removal.

[0032] In order to solve the above-mentioned defects of the prior art, the inventor provides a hydraulic pliers rotary power output flexible shaft.

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a hydraulic pliers rotating power output flexible shaft, which includes a flexible shaft core 3, one end of the flexible shaft core 3 is installed with a power input connector 1 through a connecting piece 2, and the other end of the flexible shaft core 3 is installed with a power output connector 6 through a connecting piece 5, and the end of the power output connector 6 is provided with a groove matching the screw; when removing the screws on the wellhead, well control equipment and wellhead operation equipment, the power input connector 1 is installed in the driving device, and the groove of the power output connector 6 is installed on the screw. When the driving device is driven, the driving device drives the power output connector 6 to rotate through the power input connector 1 to remove the screw.

[0034] A hose 4 is sleeved on the outer side of the flexible shaft core 3, and the two ends of the hose 4 are respectively connected to the connector 1 2 and the connector 2 5. Specifically, the two ends of the hose 4 are respectively riveted and fixedly connected to the connector 1 2 and the connector 2 5. A steel winding layer 41, an inner rubber layer 42, a steel mesh braided layer 43 and an outer cloth-wrapped rubber layer 44 are provided in the hose 4. The steel winding layer 41 contacts the outer side of the flexible shaft core 3, wherein the steel winding layer 41, the inner rubber layer 42, the steel mesh braided layer 43 and the outer cloth-wrapped rubber layer 44 are arranged in sequence from the inside to the outside in the hose 4 and are fixedly connected to each other.

[0035] In this embodiment, bearing sleeves are provided on the outer sides of the connecting member 1 2 and the connecting member 2 5 , and the bearing sleeves are rotatably connected to the flexible shaft core 3 .

[0036] In this embodiment, the outer diameters of the power input connector 1 and the connector 2 are the same.

[0037] In this embodiment, the driving device is preferably a hydraulic power device.

[0038] When in use, the power input connector 1 is fixedly installed in the rotor of the hydraulic power equipment, and the connector 2 is also fixedly installed in the stator of the hydraulic power equipment. The rotor of the hydraulic power equipment drives the flexible shaft core 3 to rotate, thereby realizing free bending transmission; the other end of the flexible shaft core 3 is sleeved on the screw to be removed through the groove of the power output connector 6, and then the hydraulic power equipment is started, the screw is quickly unscrewed, or the power output connector 6 is connected to the drill bit of the hole opener to realize the hole opening effect. Since the outer end of the flexible shaft core 3 is provided with a hose 4, the hose 4 is composed of a steel winding layer 41, an inner rubber layer 42, a steel wire braided layer 43 and an outer cloth-type rubber layer 44 from the inside to the outside, and each layer is fixedly connected. The hose 4 has a strong and wear-resistant structure, and the flexible shaft core 3 can be better protected by the hose 4.

[0039] By arranging a power input connector 1 and a connector 2 at the end of the flexible shaft core 3, it can be used in conjunction with the hydraulic power equipment at the oil well site to achieve free bending transmission; when the flexible shaft core 3 is used for pre-opening and depressurizing the surface casing and the oil layer casing, the power input connector 1 of the flexible shaft core 3 is fixedly installed in the rotor of the hydraulic power equipment, the connector 2 is also fixedly installed in the stator of the hydraulic power equipment, the power output connector 6 is connected to the drill bit of the hole opener, the hydraulic power equipment is started, the flexible shaft core 3 is driven to rotate by the rotor of the hydraulic power equipment, and the flexible shaft core 3 drives the drill bit to rotate The hole-opening operation can be realized, and the hole-opening time can be shortened to less than 15 minutes; when the flexible shaft core 3 is used to replace and assemble the operating equipment, the power input connector 1 of the flexible shaft core 3 is fixedly installed in the rotor of the hydraulic power equipment, the connector 2 is also fixedly installed in the stator of the hydraulic power equipment, the power output connector 6 is connected to the screw socket head, and is sleeved on the screw that needs to be removed, the hydraulic power equipment is started, and the flexible shaft core 3 is driven to rotate by the rotor of the hydraulic power equipment to quickly unscrew the screw; various types of wellheads, well control equipment and wellhead operating equipment can be replaced and assembled efficiently.

[0040] Taking the Oil Production Plant No. 2 of PetroChina Changqing Oilfield Branch as an example, the above two operations may occur more than 500 times throughout the year. The use of this output flexible shaft can effectively reduce the operation time by more than 100 days and reduce the overhaul construction cost by 1.88 million yuan (overhaul operation cost: 18,800 yuan / day).

[0041] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic pliers rotary power output flexible shaft, characterized in that: include: A flexible shaft core (3) is provided with a power input connector (1) at one end thereof through a connector 1 (2), and a power output connector (6) is provided at the other end thereof through a connector 2 (5), wherein a groove matching the screw is provided at the end of the power output connector (6); When removing screws on a wellhead, well control equipment or wellhead operation equipment, the power input connector (1) is installed in a driving device, and the groove of the power output connector (6) is installed on the screw. When the driving device is driven, the driving device drives the power output connector (6) to rotate via the power input connector (1) to remove the screw.

2. The output flexible shaft according to claim 1, characterized in that: A hose (4) is sleeved on the outer side of the flexible shaft core (3), and two ends of the hose (4) are respectively connected to the first connector (2) and the second connector (5).

3. The output flexible shaft according to claim 2, characterized in that: The hose (4) is provided with a steel winding layer (41), an inner rubber layer (42), a steel wire mesh braided layer (43) and an outer cloth-wrapped rubber layer (44), and the steel winding layer (41) is in contact with the outer side of the soft shaft core (3).

4. The output flexible shaft according to claim 3, characterized in that: The steel winding layer (41), the inner rubber layer (42), the wire mesh braided layer (43) and the outer cloth-wrapped rubber layer (44) are arranged in sequence from the inside to the outside in the hose (4) and are fixedly connected to each other.

5. The output flexible shaft according to claim 2, characterized in that: The two ends of the hose (4) are respectively fixedly connected to the first connecting piece (2) and the second connecting piece (5) by riveting.

6. The output flexible shaft according to claim 1, characterized in that: The outer sides of the connecting piece 1 (2) and the connecting piece 2 (5) are both provided with bearing sleeves, and the bearing sleeves are rotatably connected to the flexible shaft core (3).

7. The output flexible shaft according to claim 1, characterized in that: The power input connector (1) has the same outer diameter as the connector 1 (2).

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