Hydraulic switch device for ram blowout preventer

Abstract

The utility model discloses a hydraulic switch device for a ram blowout preventer, and relates to the technical field of oil field operation well control. The device comprises a flashboard locking assembly, the flashboard locking assembly comprises a protective cylinder, a hydraulic motor and a coupler, the protective cylinder is arranged on the outer side of a flashboard driving assembly in a sleeving mode, and one end of the protective cylinder is fixed to a shell; the hydraulic motor is fixed to the other end of the protective cylinder, and the output end of the hydraulic motor is in transmission connection with the input end of the flashboard driving assembly through a coupler. The flow distributing and collecting valve is fixed to the front end of the shell, and the flow distributing and collecting valve is connected with a hydraulic loop of the hydraulic motor through an oil pipe; and the hydraulic control mechanism is communicated with the flow distributing and collecting valve through an oil pipe. Synchronous movement of the flashboards on the two sides can be achieved through hydraulic control, so that opening and closing of the flashboards are achieved, time and labor are saved, safety and high efficiency are achieved, the device can be installed on an existing manual blowout preventer, resource waste is avoided, and cost expenditure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of well control for oil field operations, in particular to a hydraulic switch device for a gate blowout preventer. Background Art

[0002] Blowout preventers are safety sealing wellhead devices used to close the wellhead during oil testing, well repair, and well completion operations to prevent blowout accidents. Manual blowout preventers are mostly used, but manual blowout preventers have the following problems: two people are required to turn the handle 14-17 times on both sides at the same time to close the wellhead, so the labor intensity is high and the well closure time is long; the time from overflow to blowout is often very short, and any hesitation will result in the inability to close the well. Manual blowout preventers cannot be operated remotely, which is very dangerous; when using a variable-diameter gate, it is difficult to deform the front seal effectively to form an initial seal when manually closed, making the well closure ineffective.

[0003] In order to overcome the problems of high manual operation intensity and difficulty in shutting in the well, some hydraulic gate blowout preventers have been proposed in the prior art. The piston rod of the hydraulic cylinder is fixed to the gate, and the gate is driven to open and close by the piston. Although the problem of manpower consumption is solved, this solution causes the original manual blowout preventer to be idle or even abandoned, resulting in serious waste of resources.

[0004] Therefore, how to realize automatic control of the blowout preventer without destroying the original blowout preventer structure and without processing or welding the original blowout preventer parts is an urgent need related to well control safety. Utility Model Content

[0005] In view of this, the utility model aims to provide a hydraulic switch device for a gate blowout preventer, which does not destroy the original manual blowout preventer structure and can solve the technical problems of the manual blowout preventer such as time-consuming, labor-intensive, high risk factor and difficulty in successfully shutting in the well.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A hydraulic switch device for a gate blowout preventer, the gate blowout preventer comprising a housing, a gate located in the housing, and a gate drive assembly installed on both sides of the housing for driving the gate to open and close, characterized in that it comprises:

[0008] The gate locking assembly comprises a protective sleeve, a hydraulic motor and a coupling. The protective sleeve is sleeved on the outside of the gate drive assembly and one end of the protective sleeve is fixed to the housing. The hydraulic motor is fixed to the other end of the protective sleeve, and the output end of the hydraulic motor is connected to the input end of the gate drive assembly through the coupling.

[0009] A flow-dividing and collecting valve, which is fixed at the front end of the housing and connected to the hydraulic oil circuit of the hydraulic motor through an oil pipe;

[0010] A hydraulic control mechanism is connected to the flow dividing and collecting valve through an oil pipe.

[0011] The beneficial effects that can be achieved by the utility model are as follows: the protective cylinder on the switch device is used to protect the internal components and provide a basis for the installation of the hydraulic motor. The diverter and collector valve is used to realize the synchronous control of the hydraulic drive components on both sides. The hydraulic control mechanism controls and supplies the hydraulic oil. The hydraulic oil passes through the diverter and collector valve and flows to the hydraulic motor to control the rotation of the hydraulic motor, thereby driving the coupling to rotate and controlling the gate blowout preventer switch action. The device can be installed on the existing manual blowout preventer without complicated modification, processing and welding, reducing the processing cost loss. At the same time, it solves the problems of high labor intensity and long operation time of the manual blowout preventer during the well closing process, the inability to use the reducer front seal, and the unsafe operation near the wellhead.

[0012] Furthermore, a plurality of observation ports are circumferentially spaced apart on a side wall of the protective tube close to the shell.

[0013] Furthermore, the coupling includes a first rotating shaft and a second rotating shaft arranged coaxially, one end of the first rotating shaft is transmission-connected to the output end of the hydraulic motor, and the other end face is provided with circumferentially spaced slots, one end of the second rotating shaft is formed with a plurality of protrusions that can be engaged with the slots, and the other end is provided with a slot, and the end of the gate drive assembly away from the gate is formed with a plug-in portion that can be plugged into the slot.

[0014] Furthermore, the hydraulic motor is a hollow shaft hydraulic motor.

[0015] Furthermore, a wrench is provided, which includes a connecting rod and a grip rod, the first rotating shaft is inserted into the hollow shaft cavity of the hydraulic motor, and a connecting rod slot is provided at the end away from one end of the shell, the connecting rod is coaxially arranged with the first rotating shaft and one end of the connecting rod can be inserted into the connecting rod slot, and the other end of the connecting rod is provided with a grip rod mounting hole arranged perpendicular to its axial direction, and the grip rod can be inserted into the grip rod mounting hole.

[0016] Furthermore, the diverter and collector valve includes an installation frame, a protective box and a diverter and collector valve block, the two installation frames are provided with two, and the two installation frames are fixed on both sides of the shell, the protective box is correspondingly located at the front end of the shell and fixedly connected to the front end side wall of the installation frame; the diverter and collector valve block is installed in the protective box and the diverter and collector valve block is provided with a diverter channel and a collector channel, the oil inlet of the diverter channel is connected to the hydraulic control mechanism through an oil pipe, and the oil outlets on both sides are connected to the oil inlet of the hydraulic oil circuit of the hydraulic motor on both sides of the shell through oil pipes, the oil inlets on both sides of the collecting channel are respectively connected to the oil outlets of the hydraulic oil circuit of the hydraulic motor on both sides of the shell, and the oil outlets are connected to the oil return port of the hydraulic control mechanism.

[0017] Furthermore, the protective box includes a box body and a protective door. Both sides of the box body are respectively fixed to the two mounting frames. Oil pipe through holes are provided on both sides of the box body. A protective door mounting opening is provided at the front end of the box body. The protective door is movably installed and hung at the protective door mounting opening.

[0018] Furthermore, a motor shield is provided, one end of which is fixed on the protective tube, and the other end of which extends away from the housing to cover the hydraulic motor.

[0019] Furthermore, the gate locking assembly is provided with two groups along the height direction of the shell, and the length of the protective tube of the upper gate locking assembly is greater than or less than the length of the protective tube of the lower gate locking assembly.

[0020] Furthermore, the motor shield corresponding to the upper gate locking assembly is fixed to the top end of the hydraulic motor thereof, and the motor shield corresponding to the lower gate locking assembly is fixed to the bottom end of the hydraulic motor thereof.

[0021] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a hydraulic switch device for a gate blowout preventer, which can be directly installed on a manual gate blowout preventer, reducing cost expenditure and avoiding waste of resources. Under the control of the hydraulic control mechanism, the hydraulic oil passes through the diverter and collector valve block and flows to the hydraulic motor, controls the rotation of the hydraulic motor, drives the coupling, and controls the switch action of the gate blowout preventer. The operation is simple and time-saving, saving manpower, and the gates on both sides can be synchronously controlled through the diverter and collector valve block, while solving the problems of not being able to use the variable diameter front seal and unsafe operation near the wellhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 The diagram is a schematic diagram of the explosion structure of a manual double-gate blowout preventer in the prior art.

[0024] Figure 2 The utility model provides a three-dimensional structural schematic diagram of a hydraulic switch device for a gate blowout preventer.

[0025] Figure 3 The utility model provides a front structural schematic diagram of a hydraulic switch device for a gate blowout preventer.

[0026] Figure 4 This is a schematic diagram of the exploded structure of the hydraulic drive assembly provided by the utility model.

[0027] Figure 5 This is a structural schematic diagram of the flow dividing and collecting valve provided by the utility model.

[0028] In the figure:

[0029] 1. gate blowout preventer, 11. housing, 12. gate drive assembly, 121. gate shaft, 122. protective cover, 123. locking screw;

[0030] 2. gate locking assembly, 21. protective tube, 211. observation port, 22. hydraulic motor, 23. coupling, 231. first rotating shaft, 232. second rotating shaft;

[0031] 3. flow dividing and collecting valve; 31. installation frame; 32. protection box; 321. box body; 322. protection door; 33. flow dividing and collecting valve block;

[0032] 4. Motor guard;

[0033] 5. Wrench, 51. Connecting rod, 52. Hand grip rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 invention.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1 The existing manual gate blowout preventer 1 includes a housing 11, a gate located in the housing 11, and a gate drive assembly 12 installed on both sides of the housing for driving the gate to open and close. The gate drive assembly 12 generally includes a gate shaft 121, a gate, a protective cover 122, a locking screw 123 and a handle. The gate shaft 121 is slidably connected to the side wall of the housing 11. The gate is correspondingly located in the inner cavity of the housing 11 and is fixed to one end of the gate shaft 121. The other end of the gate shaft 121 is provided with a threaded blind hole arranged along its axial direction. The protective cover 122 is sleeved on the outer peripheral side of the gate shaft 121, and one end of the locking screw 123 is fixed to the side wall of the housing 11; one end of the locking screw 123 is threadedly connected in the blind hole, and the other end is rotatably connected to the other end of the protective cover 122 through a bearing, and the handle is fixed to the other end of the locking screw 123. When the handle is rotated, the locking screw 123 rotates accordingly and drives the gate shaft 12 to slide and push and pull the gate, so as to close or open the gate.

[0038] Embodiment 1:

[0039] See also Figure 2-Figure 5 The utility model embodiment discloses a hydraulic switch device for a gate blowout preventer, comprising:

[0040] The gate locking assembly 2 includes a protective tube 21, a hydraulic motor 22 and a coupling 23. The protective tube 21 is sleeved on the outside of the gate drive assembly 12 and one end of the protective tube 21 is fixed to the housing 11. The hydraulic motor 22 is fixed to the other end of the protective tube 21, and its output end is connected to the input end of the gate drive assembly 12 through the coupling 23.

[0041] The flow-dividing and collecting valve 3 is fixed at the front end of the housing 11, and the flow-dividing and collecting valve 3 is connected to the hydraulic oil circuit of the hydraulic motor 22 through an oil pipe;

[0042] The hydraulic control mechanism is connected to the flow dividing and collecting valve 3 through the oil pipe.

[0043] The hydraulic control mechanism at least includes a control system and a hydraulic pump, wherein the hydraulic pump is electrically connected to the control system, and one end of the hydraulic pump is connected to the flow dividing and collecting valve through an oil pipe, and the other end is connected to the oil tank.

[0044] See also Figure 4 A plurality of observation ports 211 are provided on the side wall of the protective tube 21 near the housing 11 in a circumferential direction, so as to facilitate viewing of the gate switch position and installation of bolts.

[0045] Preferably, the coupling 23 includes a first rotating shaft 231 and a second rotating shaft 232 arranged coaxially, one end of the first rotating shaft 231 is drivingly connected to the output end of the hydraulic motor 22, and the other end surface is provided with a circumferentially spaced card slot, one end of the second rotating shaft 232 is formed with a plurality of protrusions that can be engaged with the card slot, and the other end is provided with a slot, and the end of the locking screw 123 away from the gate is formed with a plug-in portion that can be plugged into the slot. The locking screw 123 and the second rotating shaft 232 are plug-in-fitted, which is convenient for disassembly and assembly.

[0046] Preferably, the cross-sections of the slot and the plug-in portion are mutually adapted polygons, so as to prevent the locking screw 123 and the second rotating shaft 232 from rotating relative to each other.

[0047] Preferably, the hydraulic motor 22 is a hollow shaft hydraulic motor 22 .

[0048] Preferably, a wrench 5 is also provided, which includes a connecting rod 51 and a hand grip rod 52. The first rotating shaft 231 is inserted into the inner cavity of the hollow shaft of the hydraulic motor 22, and a connecting rod slot is provided at the end thereof away from the housing 11. The connecting rod 51 is coaxially arranged with the first rotating shaft 231, and one end of the connecting rod 51 can be inserted into the connecting rod slot. The other end of the connecting rod 51 is provided with a hand grip rod 52 mounting hole arranged perpendicular to its axial direction, and the hand grip rod 52 can be inserted into the hand grip rod 52 mounting hole. The cross-sections of the connecting rod 51 slot and the plug-in end of the connecting rod 51 are both hexagonal. When the hydraulic drive fails, the handle is plugged into the first rotating shaft 231 corresponding to the gate to be closed, and the gate can be closed by rotating the handle.

[0049] Preferably, Figure 5As shown, the flow-dividing and collecting valve 3 includes a mounting frame 31, a protection box 32 and a flow-dividing and collecting valve block 33. The mounting frame 31 is provided with two and the two mounting frames 31 are fixed on both sides of the housing 11. The protection box 32 is correspondingly located at the front end of the housing 11 and fixedly connected to the front end side wall of the mounting frame 31. The flow-dividing and collecting valve block 33 is installed in the protection box 32 and a flow-dividing channel and a flow-collecting channel are provided on the flow-dividing and collecting valve block 33. The oil inlet of the flow-dividing channel is connected to the hydraulic pump through an oil pipe, and the oil outlets on both sides are connected to the oil inlet of the hydraulic oil circuit of the hydraulic motor 22 on both sides of the housing 11 through an oil pipe. The oil inlet on both sides of the collecting channel is respectively connected to the oil outlet of the hydraulic oil circuit of the hydraulic motor 22 on both sides of the housing 11, and the oil outlet is connected to the oil tank. The flow-dividing and collecting valve block 33 for controlling the synchronous rotation of the hydraulic motor 22 and the quick connector required for pipeline connection are integrated on the flow-dividing and collecting valve 3. The quick connector facilitates the disassembly and connection of the hydraulic pipeline during the maintenance of the blowout preventer.

[0050] Preferably, the protective box 32 includes a box body 321 and a protective door 322. Both sides of the box body 321 are fixed to the two mounting frames 31 by bolts. Both sides of the box body 321 are provided with oil pipe perforations. The front end of the box body 321 is provided with a protective door installation opening. The protective door 322 is movably installed and hung at the protective door installation opening. When the device is stored or transported, the protective door 322 is closed. When in use, the protective door 322 is opened and the oil pipe is connected to the corresponding quick connector.

[0051] Preferably, a motor shield 4 is further provided, one end of which is fixed on the protective tube 21 and the other end of which extends away from the housing 11 to shield the hydraulic motor 22 to protect the hydraulic motor 22 and the oil pipe quick connector thereon.

[0052] Embodiment 2:

[0053] like Figure 2 , Figure 3 This embodiment provides a hydraulic switch device for a double-gate blowout preventer. This embodiment is improved on the basis of embodiment 1. Two groups of gate locking assemblies 2 are provided along the height direction of the housing 11 to cooperate with the gate drive assembly 12 of the double-gate blowout preventer. Among them, the length of the protective cylinder 21 of the upper gate locking assembly 2 is greater than or less than the length of the protective cylinder 21 of the lower gate locking assembly 2. Due to the influence of the size of the hydraulic motor 22, the upper hydraulic motor 22 and the lower hydraulic motor 22 may interfere with each other in space. Therefore, the upper and lower layers use protective cylinders 21 of different lengths to stagger the interference parts, thereby avoiding the spatial interference of the hydraulic motor 22.

[0054] In addition, the motor shield 4 corresponding to the upper gate locking assembly 2 is fixed at the top end of the hydraulic motor 22, and the motor shield 4 corresponding to the lower gate locking assembly 2 is fixed at the bottom end of the hydraulic motor 22, which neither affects the installation of the hydraulic oil pipe nor avoids interference with the installation space.

[0055] When in use, the hydraulic switch device is installed on the manual gate blowout preventer, and then the hydraulic control mechanism on the work vehicle is connected to the front end of the flow dividing and collecting valve 3 with an oil pipe, so that the hydraulic oil passes through the flow dividing and collecting valve 3 to achieve balanced flow distribution on both sides of the blowout preventer, and enters the hydraulic motor 22 through the oil pipe to drive the hydraulic motor 22 to rotate forward or reverse, and the power is transmitted to the locking screw 123 of the manual blowout preventer through the coupling 23 to realize the opening and closing of the gate.

[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic switch device for a gate blowout preventer, the gate blowout preventer (1) comprising a housing (11), a gate located in the housing (11), and a gate drive assembly (12) installed on both sides of the housing for driving the gate to open and close, characterized in that: include: A gate locking assembly (2), the gate locking assembly (2) comprising a protective tube (21), a hydraulic motor (22) and a coupling (23), the protective tube (21) being sleeved on the outside of the gate drive assembly (12) and having one end fixed to the housing (11); the hydraulic motor (22) being fixed to the other end of the protective tube (21), and having an output end thereof being connected to an input end of the gate drive assembly (12) through a coupling (23); A flow-dividing and collecting valve (3), wherein the flow-dividing and collecting valve (3) is fixed at the front end of the housing (11), and the flow-dividing and collecting valve (3) is connected to the hydraulic oil circuit of the hydraulic motor (22) via an oil pipe; A hydraulic control mechanism is connected to the flow dividing and collecting valve (3) through an oil pipe.

2. A hydraulic switch device for a ram blowout preventer according to claim 1, characterized in that: A plurality of observation ports (211) are circumferentially spaced apart on a side wall of the protective tube (21) close to the shell (11).

3. A hydraulic switch device for a ram blowout preventer according to claim 1, characterized in that: The coupling (23) comprises a first rotating shaft (231) and a second rotating shaft (232) which are coaxially arranged, wherein one end of the first rotating shaft (231) is drivingly connected to the output end of the hydraulic motor (22), and the other end surface is provided with circumferentially spaced slots, one end of the second rotating shaft (232) is formed with a plurality of protrusions which can be engaged with the slots, and the other end is provided with a slot, and the gate drive assembly (12) is formed with a plug-in portion which can be plugged into the slot at one end away from the gate.

4. A hydraulic switch device for a ram blowout preventer according to claim 3, characterized in that: The hydraulic motor (22) is a hollow shaft hydraulic motor (22).

5. A hydraulic switch device for a ram blowout preventer according to claim 4, characterized in that: A wrench (5) is also provided, the wrench (5) comprising a connecting rod (51) and a grip rod (52), the first rotating shaft (231) is inserted into the hollow shaft cavity of the hydraulic motor (22), and a connecting rod slot is provided at the end thereof away from one end of the housing (11), the connecting rod (51) is coaxially arranged with the first rotating shaft (231), and one end of the connecting rod (51) can be inserted into the connecting rod slot, the other end of the connecting rod (51) is provided with a grip rod (52) mounting hole arranged perpendicular to its axial direction, and the grip rod (52) can be inserted into the grip rod (52) mounting hole.

6. A hydraulic switch device for a ram blowout preventer according to claim 1, characterized in that: The flow-dividing and collecting valve (3) comprises an installation frame (31), a protection box (32) and a flow-dividing and collecting valve block (33); the installation frame (31) is provided with two and the two installation frames (31) are fixed on both sides of the shell (11); the protection box (32) is correspondingly located at the front end of the shell (11) and fixedly connected to the front end side wall of the installation frame (31); the flow-dividing and collecting valve block (33) is installed in the protection box (32) and the flow-dividing and collecting valve block (33) is provided with a flow-dividing channel and a flow-collecting channel; the oil inlet of the flow-dividing channel is connected to the hydraulic control mechanism through an oil pipe, and the oil outlets on both sides are connected to the oil inlet of the hydraulic oil circuit of the hydraulic motor (22) on both sides of the shell (11) through an oil pipe; the oil inlets on both sides of the collecting channel are respectively connected to the oil outlets of the hydraulic oil circuit of the hydraulic motor (22) on both sides of the shell (11), and the oil outlets are connected to the oil return port of the hydraulic control mechanism.

7. A hydraulic switch device for a ram blowout preventer according to claim 6, characterized in that: The protection box (32) comprises a box body (321) and a protection door (322). Both sides of the box body (321) are respectively fixed to the two installation frames (31). Both sides of the box body (321) are provided with oil pipe through holes. The front end of the box body (321) is provided with a protection door installation opening. The protection door (322) is movably installed and hung at the protection door installation opening.

8. A hydraulic switch device for a ram blowout preventer according to any one of claims 1 to 7, characterized in that: A motor shield (4) is also provided, one end of which is fixed on the protective tube (21), and the other end of which extends in a direction away from the housing (11) to cover the hydraulic motor (22).

9. A hydraulic switch device for a ram blowout preventer according to claim 8, characterized in that: The gate locking assembly (2) is provided with two groups along the height direction of the shell (11), and the length of the protective tube (21) of the upper gate locking assembly (2) is greater than or less than the length of the protective tube (21) of the lower gate locking assembly (2).

10. A hydraulic switch device for a ram blowout preventer according to claim 9, characterized in that: The motor shield (4) corresponding to the upper gate locking assembly (2) is fixed to the top end of the hydraulic motor (22) thereof, and the motor shield (4) corresponding to the lower gate locking assembly (2) is fixed to the bottom end of the hydraulic motor (22) thereof.

Images