Hydraulic control unit device and system

Abstract

A hydraulic control unit having an electric motor and a hydraulic pump is provided. The electric motor and the hydraulic pump are mounted spaced apart from each other on respective first and second sides of a main body member. The electric motor is configured to drive the hydraulic pump, and the electric motor and the hydraulic pump are respectively housed within respective electric motor housings and hydraulic pump housings, which are configured to isolate the electric motor from the hydraulic pump. The electric motor housing and the hydraulic pump housing may include a sealing member and an end cap, wherein a proximal end of the sealing member is sealingly engaged with the main body member, and wherein a distal end of the sealing member is sealingly engaged with the end cap. The electric motor may be configured to drive the hydraulic pump via a drive shaft extending through a suitable aperture provided in the main body member. The sealing member defined by the hydraulic pump housing may be configured to contain hydraulic fluid, and the hydraulic pump is immersable in the hydraulic fluid during use. A control device for use with one or more hydraulic control units, a hydraulic control system including one or more hydraulic control units and a control device, and a method for controlling cable pressure equipment are also provided. Ideally, one or each hydraulic control unit is mounted to a device in a cable assembly, and the hydraulic control unit is arranged to operate the device.

Description

Technical Field

[0001] This disclosure relates to a hydraulic control unit suitable for use with cable pressure control equipment, and related systems for controlling cable pressure equipment. Background Technology

[0002] Conventional prior art methods for controlling cable pressure equipment (e.g., equipment associated with cable stringing equipment) typically require a control module, usually in the form of a skid-mounted control module located on a rig or land, and include a high-capacity hydraulic pump configured to push hydraulic fluid from the module along thick and often long hydraulic hoses to the cable control equipment associated with the equipment.

[0003] These skid-mounted control modules are typically manually controlled via regulators, needle valves, and gauges located on the module's control panel. Hydraulic hoses, wound on a reel at the rear of the module, typically occupy at least half of the control module's volume. An accumulator located on the module is used in case of an emergency shutdown. Furthermore, conventional skid-mounted control modules usually require a relatively large prime mover to pump hydraulic fluid several meters up from the drill rig to the cable pressure equipment.

[0004] Since different equipment layouts have different configurations, there is currently no control module that can be applied to all purposes. Therefore, a specific version of the control module must be manufactured for each type of equipment. Summary of the Invention

[0005] According to a first aspect of this disclosure, a hydraulic control unit is provided, the hydraulic control unit including an electric motor and a hydraulic pump, wherein the electric motor and the hydraulic pump are spaced apart from each other on respective first and second sides of a main body member, wherein the electric motor is configured to drive the hydraulic pump, and wherein the electric motor and the hydraulic pump are respectively housed in respective electric motor housings and pump housings, the electric motor housings and pump housings being configured to isolate the electric motor from the hydraulic pump.

[0006] Optionally, the first side and the second side of the main body component are opposite sides of the main body component.

[0007] Optionally, the motor housing and the hydraulic pump housing each include a sealing member and an end cap, wherein the proximal end of the sealing member is adapted to seal against the main body member, and wherein the distal end of the sealing member is adapted to seal against the end cap.

[0008] Optionally, the electric motor is configured to drive the hydraulic pump via a drive shaft, wherein the drive shaft extends through a suitable hole provided in the main body member.

[0009] Optionally, the enclosure defined by the hydraulic pump housing is configured to contain hydraulic fluid, and the hydraulic pump can be immersed in the hydraulic fluid during use.

[0010] Optionally, the hydraulic pump housing defines a hydraulic tank configured to contain hydraulic fluid, and the hydraulic pump can be immersed in the hydraulic fluid during use.

[0011] Optionally, the hydraulic pump is a bidirectional external inlet gear pump.

[0012] Optionally, the main body component forms or defines a manifold having multiple ports and associated channels arranged to form suitable fluid communication between each other and / or with the hydraulic pump and its housing.

[0013] Alternatively, the channel is formed substantially inside the main body component.

[0014] Optionally, the ports of the main body component are arranged to receive or support hydraulic control components or connectors associated with the channel.

[0015] Optionally, the main component is provided with an inlet port and an outlet port.

[0016] Optionally, the main component is provided with a pilot-operated check valve port, which is configured to receive a pilot-operated check valve. Optionally, the main component is provided with multiple relief valve ports, which are configured to receive relief valves such as spring-loaded relief valves. Optionally, the main component is provided with multiple vents, which are configured to receive vent valves or pipe fittings.

[0017] Optionally, the control unit further includes a speed controller associated with the electric motor, the speed controller being located within the electric motor housing.

[0018] Optionally, each of the corresponding first and second sides of the main body component includes an annular boss structure, wherein the boss structure provides a mounting ring for positioning the sealing components of the corresponding motor housing and pump housing, and optionally, wherein the base of each annular boss includes a groove or seat adapted to retain the sealing ring, and typically provides a preventive flame path to enable the sealing to meet ATEX and / or IECEx rating requirements.

[0019] Optionally, the sealing engagement between the sealing member and the end cap includes: abutting or engaging the sealing member with the handle of the end cap to form a seal; optionally, a sealing ring is provided in a groove or seat surrounding the base of the handle.

[0020] Optionally, the corresponding motor housing and pump housing are rigidly fixed to the main body by means of a plurality of support members. Optionally, each support member includes a rigid rod having threaded portions at its proximal and distal ends. The proximal end of the rigid rod is optionally configured to be threadedly attached to a corresponding mating hole in the main body. The distal end of the rigid rod is optionally arranged to extend through a mating hole provided in an end cap and to receive a mating threaded fastener thereon.

[0021] Optionally, a locking and sealing engagement between the sealing components of the pump housing and motor housing and the main body components and corresponding end caps can be achieved by tightening threaded fasteners located at the distal end of the support component.

[0022] Optionally, the support member is arranged outside the enclosure member of the housing.

[0023] Advantageously, the structure of the motor housing and hydraulic pump housing allows for easy disassembly and reassembly, thereby simplifying inspection and maintenance.

[0024] Optionally, the hydraulic control unit further includes a piston, wherein the piston is located within the hydraulic pump housing and between the hydraulic pump and the end cap.

[0025] Optionally, the piston is capable of linear movement along the pump housing during operation, and wherein the piston is configured to compensate for hydraulic volume changes between the open and closed positions of the control unit and its operatively connected cable device during use.

[0026] Optionally, the piston includes one or more piston rings (not shown) located in suitable grooves or seats arranged around the circumference of the piston, wherein the piston rings typically seal the gap between the piston and the inner wall of the sealing member.

[0027] Optionally, the permissible stroke range of the piston within the pump housing is variable. Optionally, the piston is pulled to a closed state during operation to maintain atmospheric pressure downstream of the hydraulic pump.

[0028] Optionally, the end cap associated with the motor housing also includes one or more cable holes configured to allow cables to enter and / or exit the motor housing.

[0029] Optionally, the body component and end caps have a generally cylindrical shape. Optionally, the body component and / or one or more end caps include a flat portion configured to allow the hydraulic control unit to be located on a corresponding flat surface, which may be located on the ground or the corresponding flat surface may be disposed on equipment such as cable equipment, the hydraulic control unit being arranged to be mounted to and operated by the equipment.

[0030] According to a second aspect of this disclosure, a control device is provided for use in conjunction with one or more hydraulic control units according to a first aspect of this disclosure.

[0031] The control device includes a control module configured to control one or more hydraulic control units.

[0032] The control module includes a main power supply, a backup power supply, and a control panel.

[0033] The main power supply and the backup power supply are each configured to supply power to one or more hydraulic control units in response to user commands provided via the control panel.

[0034] The backup power supply is configured to supply power to one or more hydraulic control units when the main power supply is interrupted.

[0035] Optionally, the control panel is a touchscreen display panel. Optionally, the control panel can be located remotely from the control unit.

[0036] Optionally, the main power supply is configured to directly control one or more control units, or to indirectly control one or more control units via the backup power supply.

[0037] Optionally, the main power supply includes multiple power supply devices.

[0038] Optionally, the backup power source includes multiple batteries.

[0039] Optionally, the hydraulic control unit can be electrically interconnected in a daisy-chain configuration, which typically has the advantage of reducing the risk of cable snagging during operations.

[0040] Optionally, the control panel is configured to enable a user to associate one or each control unit with a specific type of hydraulic drive that is operatively connected to it during use.

[0041] According to a third aspect of this disclosure, a hydraulic control system is provided, comprising: one or more hydraulic control units according to a first aspect of this disclosure and a control device according to a second aspect of this disclosure.

[0042] According to a fourth aspect of this disclosure, a method for controlling a cable pressure device is provided, the method comprising the following steps:

[0043] Provide one or more hydraulic control units according to the first aspect of this disclosure;

[0044] Connect each hydraulic control unit to the control module;

[0045] Each hydraulic control unit is operatively hydraulically connected to a cable pressure control device;

[0046] Controlling the operation of one or more hydraulic control units to provide hydraulic power for operating the cable pressure control device.

[0047] Optionally, the method includes the step of electrically interconnecting a plurality of hydraulic control units in a daisy-chain configuration.

[0048] Optionally, one or each hydraulic control unit may be mounted to the cable assembly.

[0049] Those skilled in the art will understand that various aspects of this disclosure can be implemented individually or in combination with one or more other aspects. Various aspects of this disclosure may optionally be provided in combination with one or more optional features of other aspects of this disclosure. Furthermore, optional features described for one aspect can generally be combined, alone or with other features, into different aspects of this disclosure. Any subject matter described in this specification can be combined with any other subject matter in this specification to form novel combinations.

[0050] Various aspects of this disclosure will now be described in detail with reference to the accompanying drawings. Other aspects, features, and advantages will become apparent from the entire description of this disclosure (including the drawings illustrating several exemplary aspects and embodiments). The subject matter disclosed herein is also capable of having other different examples and aspects, and several details thereof may be modified in various aspects without departing from the spirit and scope of the invention. Therefore, each example herein should be understood to have broad application and is intended to illustrate one possible way of implementing the disclosed subject matter, without implying that the scope of this disclosure (including the claims) is limited to that example. Furthermore, the terminology and wording used herein are for descriptive purposes only and should not be construed as limiting the scope. In particular, unless otherwise stated, dimensions and numerical values ​​included herein are given by way of example to illustrate one possible aspect of the claimed subject matter and do not limit this disclosure to the particular dimensions or numerical values ​​stated herein. All numerical values ​​in this disclosure should be understood to be modified by “about”. All singular forms of elements or any other components described herein should be understood to include their plural forms, and vice versa.

[0051] Terms such as “comprising,” “including,” “having,” “containing,” or “involving,” and their variations, are intended to have a broad meaning and to cover the subjects listed thereafter, equivalents, and other subjects not listed, without excluding other additions, components, integers, or steps. Similarly, for applicable legal purposes, the term “comprising” is considered synonymous with the terms “including” or “containing.” Therefore, throughout the specification and claims, unless the context requires otherwise, the word “comprising” or its variations such as “including” or “including” should be understood to mean including the stated integer or group of integers, but not excluding any other integer or group of integers.

[0052] Any discussion of documents, actions, materials, devices, articles, etc. in this specification is merely to provide background for this disclosure. It does not imply or represent that any or all of these matters were part of the prior art or were common knowledge in the relevant field.

[0053] In this disclosure, whenever a description of a composition, element, or group of elements is preceded by the transitional phrase "comprising," it should be understood that we also contemplate the same composition, element, or group of elements preceded by the transitional phrases "substantially constitutes," "consisting of," "selected from the group of," "comprising," or "is," and vice versa. In this disclosure, the terms "generally" or "optionally" should be understood as intended to indicate optional or non-essential features of the subject matter that are present in some examples but may be omitted in others without departing from the scope of the invention as defined in the claims.

[0054] Descriptions of direction and position such as upper and lower, proximal and distal, and references to directions such as “upward,” “downward,” “top,” “tilted,” “horizontal,” and “vertical” should be interpreted by those skilled in the art in the context of the examples described to refer to the orientation of the features shown in the drawings, and should not be construed as limiting this disclosure to the literal interpretation of these terms, but rather as they would be understood by those skilled in the art. Attached Figure Description

[0055] In the attached diagram:

[0056] Figure 1 This is a schematic perspective view based on an example hydraulic control unit;

[0057] Figure 2 yes Figure 1 A schematic perspective view of the hydraulic control unit, with the housing components removed.

[0058] Figure 3 yes Figure 1 A sectional side view of the hydraulic control unit;

[0059] Figure 4 It is a cross-sectional end view through the middle of the main body member 40 in a first direction, wherein the view is viewed toward the second side 40b of the motor 20 containing the hydraulic control unit;

[0060] Figure 5 It is a cross-sectional end view through the middle of the main body member 40 in the second direction, wherein the view is viewed toward the first side 40a of the hydraulic pump 30 containing the hydraulic control unit;

[0061] Figure 6 This is a schematic diagram of existing technical equipment that uses a skid-mounted hydraulic pressure control device;

[0062] Figure 7 This is a schematic diagram of an exemplary apparatus including multiple exemplary hydraulic control units; and

[0063] Figure 8 Is with Figure 1 A schematic diagram of a control system used in conjunction with a hydraulic control unit. Detailed Implementation

[0064] refer to Figure 6 This illustrates a conventional prior art arrangement for controlling cable pressure devices (e.g., cable string assembly 1). The arrangement includes a control module, such as a skid-mounted control module 2 located on a drilling rig or land, wherein the control module includes a high-capacity hydraulic pump configured to push hydraulic fluid from the module along thick and often long hydraulic hoses 3 to each cable control device 4 associated with assembly 1.

[0065] This skid-mounted control module 2 is manually controlled via regulators, needle valves, and gauges located on the control panel 5 of module 1. Hydraulic hoses 3 are wound on a reel 6 located at the rear of module 2, typically occupying at least half the volume of the control module 2. An accumulator located on the module is used for emergency shutdown.

[0066] refer to Figure 1 , Figure 2 and Figure 3 According to one example, a hydraulic control unit 10 is shown, which includes an electric motor 20 and a hydraulic pump 30, wherein the electric motor 20 and the hydraulic pump 30 are mounted spaced apart from each other on a first side 40a and a second side 40b of a main body member 40. The hydraulic control unit 10 may also include a speed controller 50 associated with the electric motor 20. The hydraulic control unit 10 is configured to provide and control remote hydraulic power. For simplicity, the hydraulic control unit 10 is referred to below as the "control unit".

[0067] In the example, the first side 40a and the second side 40b of the main body member 40 are opposite sides of the main body member 40.

[0068] refer to Figure 2 and Figure 3 The electric motor 20 is configured to drive the hydraulic pump 30, for example via a suitable hole 46 extending through the main body member 40. Figure 3 The drive shaft 21 drives the hydraulic pump 30.

[0069] As described below and referenced Figure 2 and Figure 3 The electric motor 20 and the hydraulic pump 30 are respectively housed in a corresponding electric motor housing assembly 200 and a pump housing assembly 300, the housing assemblies being arranged to isolate the electric motor 20 from the hydraulic pump 30.

[0070] like Figure 2 , Figure 3 and Figure 4 As shown in detail, the main body member 40 forms or defines a manifold having multiple ports 41, 42, 43, 44, 45 and associated channels arranged to form suitable fluid communication between themselves and / or with the hydraulic pump 30 and its housing 300. The channels are substantially formed within the main body member 40. The main body member 40 can be a one-piece construction, for example, formed or machined from a single piece of suitable material. The respective ports 41, 42, 43, 44, 45 of the main body member 40 are arranged to receive or support hydraulic control components or connectors associated with the channels. The control components or connectors can be connected to the respective ports 41 to 45 by threaded connections or other suitable attachment methods. The control components can include, but are not limited to, any one or more of the following: pilot-operated check valves, relief valves, inlet ports, outlet ports, and vents. In the example shown in the figures, the main body member is provided with an inlet port 41 (… Figure 3 and Figure 4 ) and export port 42 ( Figure 2 and Figure 4 The main component 20 is also provided with: a pilot-operated check valve port 43 configured to receive a pilot-operated check valve 60, a plurality of relief valve ports 44 configured to receive a relief valve 61, and a plurality of vent ports 45 configured to receive a vent valve or pipe fitting 62.

[0071] A pilot-operated check valve 60 forms a hydraulic lock, which opens under pilot action when the motor 20 is reverse-driven. This is particularly advantageous when the hydraulic control unit 10 is used in conjunction with a cable safety valve, which requires a hydraulic lock that remains locked in one direction in the event of power loss. A relief valve 61 is configured to allow hydraulic fluid in the system, including the hydraulic control unit 10, to overflow back into the hydraulic tank if the system reaches a defined maximum hydraulic pressure, thereby protecting the hydraulic circuit from overpressure. A vent 45 allows the hydraulic system to be vented, for example, to release accumulated air, or to facilitate the replacement of hydraulic fluid without disassembling the device 10. Inlet and outlet valves, which can be positioned in corresponding inlet ports 41 and outlet ports 42, allow the hydraulic fluid to be connected to the intended cable pressure device 4, for example, with… Figure 7 The cable pressure control device 4 associated with the cable string and other equipment 1 is shown as an example.

[0072] In the example disclosed herein, the respective first side 40a and second side 40b of the main body member 40 include annular boss structures 47. Each annular boss structure 47 projects substantially perpendicular to the left and right facing surfaces of the main body member 40.

[0073] refer to Figure 2 and Figure 3 The electric motor 20 and the hydraulic pump 30 are respectively installed on the main component 40 at a position located in the area defined by the corresponding annular boss structure 47.

[0074] The annular boss structure 47 provides a mounting ring for positioning the respective motor housing 200 and pump housing 300 described below. For example... Figure 3 As shown, a groove or seat 471 suitable for retaining the sealing ring 48 is provided around the base of each annular boss 47.

[0075] like Figures 1 to 3 As illustrated by way of example, the motor housing 200 and the hydraulic pump housing 300 each include a sealing member 210 and end caps 220A and 220B. For clarity, Figure 2 The enclosure component 210 is not shown.

[0076] The structure and layout of each shell, 200 and 300, are basically the same. For example... Figure 1 and Figure 3 As most clearly shown in the example, each enclosure member 210 is a basic cylindrical member 210. The proximal end of each enclosure member 210 is configured to mount around the annular boss structure 47 of the body member 40. The distal end of each enclosure member 210 is configured to receive the handle 221 of the end caps 220A, 220B.

[0077] like Figure 2 and Figure 3 As illustrated by way of example, each end cap 220A, 220B includes a handle 221 projecting from its surface. The handle 221 is of a generally circular structure. The handle 221 may be defined by any suitable protrusion, including but not limited to a boss, edge, flange, or circular platform. A groove or seat 222 suitable for retaining a sealing ring 223 is provided at the base of the handle 221.

[0078] like Figure 3 As shown, the proximal end of the enclosure member 210 can be configured to slidably seal against the boss structure 47. Optionally, one proximal end of each enclosure member 210 is adapted to seal against a sealing ring 48 disposed around the base of the boss structure 47.

[0079] Similarly, the distal end of each sealing member 210 can be configured to slidably seal against the end cap handle 221. Optionally, the distal end of each sealing member 210 is adapted to seal against a sealing ring 223 disposed around the base of the end cap handle 221. Thus, end caps 220A, 220B can be configured to interlock with the sealing member 210.

[0080] like Figures 1 to 5 As shown, the corresponding motor housing 200 and pump housing 300 are rigidly fixed to the main body member 40 by means of a plurality of support members 230. In the example disclosed herein, each support member 230 includes a rigid rod having a threaded portion at its respective end, one end being configured to be threadedly attached to a corresponding mating hole in the main body member 40, while the opposite end is arranged to extend through mating holes 224 provided in end caps 220A, 220B. Figure 3 ), and accept matching threaded fasteners, such as locknut 225.

[0081] As the threaded fasteners 225 are tightened, the end caps 220A and 220B are pulled toward the main component 40. Consequently, the two ends of the sealing component 210 are pressed and seal against the end caps 220A and 220B and the main component 40. Thus, the motor housing 200 and the pump housing 300 are sealed relative to the main component 40.

[0082] In the example shown, four support members 230 are illustrated; however, any suitable number of support members 230 may be used. As shown in the figures, the support members 230 are arranged outside the enclosure member 210, i.e., the enclosure member 210 is located inside the support members 230.

[0083] Advantageously, the structure of the motor housing 200 and the hydraulic pump housing 300 facilitates disassembly and reassembly, thereby simplifying inspection and maintenance.

[0084] like Figure 1 and Figure 2As shown, the end cap 220B associated with the motor housing 200 also includes one or more cable holes 226 configured to allow cable 11 ( Figure 7 , Figure 8 (For example, but not limited to, a DCAN cable or a 4-core (2 power lines, 2 signal lines) cable 11) enters and exits the motor housing 200, for example, to power and / or control the motor 20 and / or the associated speed controller 50, and to communicate with the following as described below. Figure 7 and Figure 8 Other hydraulic control units 10, illustrated by way of example, are electrically interconnected. One or each cable hole 226 is configured to receive a suitable cable seal and / or cable connector (not shown) to securely attach and seal the cable 11 relative to the end cap 220B. The control units 10 can be interconnected by using seals or cable connectors with appropriate zone grades.

[0085] Therefore, the enclosure defined by the aforementioned motor housing 200 is an "Ex D" (i.e., explosion-proof) enclosure, whose explosion-proof mating surfaces, clearances, and surface roughness are arranged to conform to EN60079-1. Advantageously, this eliminates the need for the speed controller 50 and the motor 20 to conform to "ATEX" ("Explosive Atmosphere") or IECEX requirements, as they are housed within the ATEX-compliant enclosure 200. Furthermore, the housing 300 conforms to Exh requirements, i.e., to ISO 80079-37.

[0086] like Figure 3 As shown, the end cap 220A associated with the hydraulic pump housing 300 also includes a hole 227 that can remain open if it is desired to balance the outermost end of the piston 310 with atmospheric pressure; or, the hole can be configured to receive a valve or suitable connector 228 to allow, for example, relatively low-pressure (but above atmospheric pressure) air to be pumped into the chamber between the piston 310 and the end cap 220A, thereby assisting in pushing the piston 310 against the hydraulic fluid during the filling of the hydraulic tank 300 with hydraulic fluid.

[0087] The enclosure defined by the hydraulic pump housing 300 is configured to contain hydraulic fluid, in which the hydraulic pump 30 is immersed during use. The hydraulic pump housing 300 serves as a hydraulic tank 300. In this example, the hydraulic pump 30 is a bidirectional external inlet gear pump.

[0088] A piston assembly 310 is disposed within the hydraulic pump housing 300. The piston 310 is located between the hydraulic pump 30 and the end cap 220A. During operation, the piston 310 is capable of linear movement along the interior of the pump housing 300 between the hydraulic pump 30 and the end cap 220A. It should be noted that the piston is free-moving, i.e., not connected to a connecting rod. One or more piston rings (not shown) located in suitable grooves or seats 311 arranged around the circumference of the piston 310 seal the gap between the piston 310 and the inner wall of the sealing assembly 210. The piston 310 is configured to compensate for hydraulic volume changes between the open and closed positions of the hydraulic control unit 10 and its operatively connected cable device 4 during use. The largest volume change occurs when the cable valve is opened and closed. Therefore, the permissible stroke range of the piston 310 can be specified based on the expected volume change. During operation, the piston 310 is pulled to the closed state to maintain atmospheric pressure downstream of the hydraulic pump 30. The presence of a piston 310, which is pulled and pushed according to the aforementioned hydraulic volume changes, ensures that the hydraulic pump 30 remains fully submerged during use. Advantageously, keeping the hydraulic pump 30 fully submerged in the hydraulic fluid within the hydraulic tank 300 allows the hydraulic control unit 10 to be used in explosion-hazard-controlled areas and eliminates the need for a breather, thus removing the breather from the device because explosive gases cannot enter the hydraulic fluid tank 300.

[0089] exist Figures 1 to 5 In the diagram, the main body component 40 and end caps 220A, 220B are shown as having a generally cylindrical shape. Optionally, one or both of the generally cylindrical main body component 40 and / or end caps 220A, 220B may include a flat portion 229, which is arranged to, for example, allow the hydraulic control unit 10 to be placed on the corresponding flat surface and / or prevent it from rolling when placed on a flat working surface. However, it should be understood that the overall shape of the main body component 40 and / or end caps 220A, 220B is not limited to a generally cylindrical shape, and other suitable shapes may be adopted, particularly shapes that allow the hydraulic control unit 10 to be attached to the cable pressure control device 4.

[0090] like Figure 7 and Figure 8 As schematically shown, a plurality of hydraulic control units 10 of the present disclosure (e.g., hydraulic control units disposed on equipment 1 such as cable strings) can be electrically connected together in a daisy-chain configuration (i.e., physically connected in series but electrically connected in parallel) via cables 11, which are typically DCAN cables or 4-core (2 power lines, 2 signal lines) cables 11, and optionally controlled via an electric control module 12 according to one aspect of the present disclosure.

[0091] refer to Figure 7According to one example, the hydraulic control unit 10 overcomes many shortcomings of this conventional prior art system, particularly by placing the hydraulic tank 300 and pump assembly 30 as close as possible to the cable pressure control device or equipment 4 (or even directly on the cable control device), and, according to the present disclosure, these miniaturized control units 10 can be remotely controlled, for example, via a small electric control module 12. Figure 7 and Figure 8 The example shown is provided below.

[0092] Advantageously, the required number of microcontrollers 10 can be varied depending on the capacity of the equipment and control panel 12. The cable control unit 4 performs independent functions and, by using the control unit 10 of the example disclosed herein, the cable pressure control device 4 can be controlled simultaneously or individually. Therefore, for this disclosure, it is not necessary to power all control units 10 simultaneously. This allows for reduced cable size and allows the control units 10 to be daisy-chained together. Compared to prior art arrangements, the example of this disclosure reduces the number of cables and the laying range in the equipment by using cable 11 (carrying DC power and CAN bus communication in a single cable 11), and reduces the risk of snagging.

[0093] refer to Figure 8 The diagram schematically illustrates a control module 12 configured to operate one or more hydraulic control units 10, optionally arranged in a daisy-chain configuration. Module 12 includes a main power supply 121 and an auxiliary or backup power supply 122. The main power supply 121 may include a first power supply unit 121A and a second power supply unit 121B. The main power supply 121 may be configured to receive power from an external power source 123 (e.g., a drilling rig power supply). The main power supply 121 is configured to supply power directly or indirectly (e.g., via the auxiliary or backup power supply 122) to one or more hydraulic control units 10. The main power supply 121 is also configured to supply power to a control panel 124 (e.g., a display screen associated with the control module 12).

[0094] The auxiliary or backup power supply 122 may include multiple batteries 122A, 122B, wherein one or more batteries 122A, 122B are arranged to power one or more hydraulic control units 10 in an emergency, optionally, particularly to devices 10 associated with critical cable control components 4 (e.g., safety valves in cable strings). One or more batteries 122A, 122B of the auxiliary power supply 122 may be arranged to power the main power supply 121. Therefore, the control module 12 provides multi-level control redundancy.

[0095] The size of one or more batteries 122A, 122B of the auxiliary power supply 122 can be configured to make the control module 12 portable, or to allow the control module 12 to be installed in a Peli. TM In a box or similar container.

[0096] The control panel 124 (e.g., a display screen associated with the control module 12) provides an interface through which the user can associate each individual control unit 10 with a specific type of hydraulic drive 4 operatively connected to it, such as a cable valve, tool catcher, etc., thereby enabling the user to select the appropriate opening and closing response. For example, a cable valve should close within 30 seconds; therefore, the hydraulic control unit 10 will require a relatively high-speed electric motor capable of operating, for example, at approximately 6,000 rpm, to achieve timely closing. On the other hand, a tool catcher must open relatively slowly; therefore, the electric motor can operate relatively slowly, for example, at a much lower speed, and the generated torque should also be lower to reduce the risk of damage to its components, such as flaps and flap shafts.

[0097] The hydraulic control unit provided according to this disclosure has the following advantages:

[0098] - It can be easily adapted to different equipment applications and eliminates the need to set up multiple variations of existing technology control modules.

[0099] - It occupies less space compared to conventional control modules.

[0100] - Automatic control is allowed instead of manual control.

[0101] - Reduce the number of high-pressure hoses that are prone to snagging.

[0102] - It can be powered by batteries in emergencies, thus eliminating the need for a hydraulic accumulator.

[0103] Modifications and improvements may be made to the embodiments and examples described herein without departing from the scope of the invention.

Claims

1. A hydraulic control unit, comprising: An electric motor and a hydraulic pump, wherein the electric motor and the hydraulic pump are mounted spaced apart from each other on respective first and second sides of a main body member, wherein the electric motor is configured to drive the hydraulic pump, and wherein the electric motor and the hydraulic pump are respectively housed in respective electric motor housings and hydraulic pump housings, the electric motor housings and the hydraulic pump housings being configured to isolate the electric motor from the hydraulic pump.

2. The hydraulic control unit according to claim 1, wherein, The first side and the second side of the main body component are opposite sides of the main body component.

3. The hydraulic control unit according to claim 1 or claim 2, wherein, The motor housing and the hydraulic pump housing each include a sealing member and an end cap, wherein the proximal end of the sealing member is adapted to be sealed to the main body member, and wherein the distal end of the sealing member is adapted to be sealed to the end cap.

4. The hydraulic control unit according to any one of the preceding claims, wherein, The electric motor is configured to drive the hydraulic pump via a drive shaft, wherein the drive shaft extends through a suitable hole provided in the main body member.

5. The hydraulic control unit according to any one of the preceding claims, wherein, The enclosure defined by the hydraulic pump housing is configured to contain hydraulic fluid, and the hydraulic pump can be immersed in the hydraulic fluid during use.

6. The hydraulic control unit according to any one of the preceding claims, wherein, The main component forms or defines a manifold having multiple ports and associated channels arranged to form suitable fluid communication between each other and / or with the hydraulic pump and its housing.

7. The hydraulic control unit according to claim 6, wherein, The port of the main component is arranged to receive or support a hydraulic control component or connector associated with the channel.

8. The hydraulic control unit according to any one of the preceding claims, wherein, The corresponding first and second sides of the main body component include annular boss structures, wherein the boss structures provide mounting rings for positioning the sealing components of the corresponding motor housing and hydraulic pump housing, wherein the base of each annular boss includes a groove or seat adapted to retain the sealing ring and provides a preventive flame path so that the sealing can meet ATEX and / or IECEX rating requirements.

9. The hydraulic control unit according to claim 3, or the hydraulic control unit according to any one of claims 4 to 8, which are dependent on claim 3, wherein, The sealing engagement between the sealing member and the end cap includes: the sealing member abutting or engaging with the handle of the end cap to form a seal, and a sealing ring being provided in a groove or seat surrounding the base of the handle.

10. The hydraulic control unit according to any one of the preceding claims, wherein, The corresponding motor housing and hydraulic pump housing are rigidly fixed to the main body by means of a plurality of support members, wherein each support member includes a rigid member having threaded portions at its proximal and distal ends, wherein the proximal end of the rigid member is configured to attach to a corresponding mating hole in the main body, and wherein the distal end of the rigid member is arranged to extend through a mating hole provided in the end cap and receive a mating fastener thereon.

11. The hydraulic control unit according to any one of the preceding claims, wherein, The hydraulic control unit further includes a piston, wherein the piston is located within the hydraulic pump housing and between the hydraulic pump and the end cap.

12. The hydraulic control unit according to claim 11, wherein, The piston is capable of moving linearly along the pump housing during operation, and wherein the piston is configured to compensate for hydraulic volume changes between the open and closed positions of the control unit and its operatively connected cable device during use.

13. The hydraulic control unit according to claim 11 or 12, wherein, The piston includes one or more piston rings located in grooves arranged around the circumference of the piston, wherein the piston rings seal the gap between the piston and the inner wall of the sealing member.

14. The hydraulic control unit according to any one of claims 11 to 13, wherein, The piston is pulled to the closed position during operation to maintain atmospheric pressure downstream of the hydraulic pump.

15. The hydraulic control unit according to any one of the preceding claims, wherein, The end cap associated with the motor housing also includes one or more cable holes configured to allow cables to enter and / or exit the motor housing.

16. The hydraulic control unit according to any one of the preceding claims, wherein, The main body component and the end cap have a generally cylindrical shape, and the main body component and / or one or more of the end caps include a flat portion configured to allow the hydraulic control unit to be located on a corresponding flat surface disposed on a device on which the hydraulic control unit is arranged to be mounted and operated.

17. A control device for use in conjunction with one or more hydraulic control units according to any one of the preceding claims. in, The control device includes a control module configured to control one or more hydraulic control units. The control module includes a main power supply, a backup power supply, and a control panel. The main power supply and the backup power supply are each configured to supply power to one or more hydraulic control units in response to user commands provided via the control panel. The backup power supply is configured to supply power to one or more hydraulic control units when the main power supply is interrupted.

18. The control device according to claim 17, wherein, The control panel is a touch screen display panel and can be set in a location far from the control module.

19. The control device according to claim 17 or 18, wherein, The main power supply is configured to control one or more control units while charging the backup power supply.

20. The control device according to any one of claims 17 to 19, wherein, The main power supply includes a first power supply device and a second power supply device.

21. The control device according to any one of claims 17 to 20, wherein, The backup power source includes multiple batteries.

22. The control device according to any one of claims 17 to 20, wherein, The hydraulic control unit can be electrically interconnected in a daisy-chain configuration.

23. A hydraulic control system, comprising: One or more hydraulic control units according to any one of claims 1 to 16 and a control device according to any one of claims 17 to 22.

24. A method for controlling a cable pressure device, the method comprising the following steps: Provide one or more hydraulic control units according to any one of claims 1 to 16; Connect one or each of the hydraulic control units to the control module; One or each of the hydraulic control units is operatively hydraulically connected to a cable pressure control device; Controlling the operation of one or more of the hydraulic control units to provide hydraulic power to operate the one-piece cable pressure control device.

25. The method for controlling cable pressure equipment according to claim 24, wherein, One or each of the hydraulic control units is installed to the cable assembly.

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