A hydraulic power unit testing device

Abstract

The present invention proposes a hydraulic power unit testing device, which belongs to the field of oil drilling engineering, and comprises a supporting mechanism, wherein the supporting mechanism comprises a base and a mounting shaft arranged on the base; a hydraulic power unit installed on the mounting shaft, wherein the hydraulic power unit provides hydraulic pressure; a force ring assembly sleeved on the mounting shaft, wherein the force ring assembly receives the pressure applied by the hydraulic power unit; and a data acquisition and control system, wherein the data acquisition and control system is connected to the hydraulic power unit and controls the hydraulic power of the hydraulic power unit, and the data acquisition and control system is also connected to the force ring assembly and acquires the pressure applied to the force ring assembly.

Description

Technical Field

[0001] The invention relates to a hydraulic power unit testing device, in particular to a test device for a hydraulic power unit of a rotary guide tool, and belongs to the field of oil drilling engineering. Background Art

[0002] The rotary steerable drilling system is an important drilling tool for wells with complex structures, such as horizontal wells, directional wells, and extended reach wells. The rotary steerable drilling system reduces the pressure by rotating the outer casing or rotating most of the outer casing, while the very short part does not rotate, thereby achieving the construction of deeper and longer horizontal wells and directional wells. In recent years, the rotary steerable drilling system has gradually become a popular steerable drilling technology and one of the key technologies for efficient drilling. The hydraulic power unit in the rotary steerable drilling system is the offset mechanism of the steerable system and the only power source for the drill bit to bend. It is crucial to the inclination rate effect and construction safety of the rotary steerable drilling system.

[0003] At present, the hydraulic power unit of the rotary steerable drilling system lacks system life and safety tests. The hydraulic power unit is an arc-shaped structure and is in a rotating state when working, which makes it difficult to test. If the hydraulic power unit cannot be accurately tested and lacks data support during use, it is easy to fail the high-pressure seal, hydraulic components, etc., resulting in the failure of the hydraulic power unit, which in turn affects the failure of the entire rotary steerable drilling system and the construction progress and effect. Summary of the invention

[0004] In view of the above technical problems existing in the prior art, the present invention proposes a hydraulic power unit testing device, which can test an arc-shaped hydraulic power unit.

[0005] The present invention provides a hydraulic power unit testing device, comprising:

[0006] A supporting mechanism, the supporting mechanism comprising a base and a mounting shaft arranged on the base;

[0007] A hydraulic power unit mounted on the mounting shaft, the hydraulic power unit providing hydraulic pressure;

[0008] a force measuring ring assembly sleeved on the mounting shaft, the force measuring ring assembly receiving the pressure applied by the hydraulic power unit; and

[0009] A data acquisition and control system, wherein the data acquisition and control system is connected to the hydraulic power unit and controls the hydraulic power of the hydraulic power unit. The data acquisition and control system is also connected to the force measuring ring assembly and acquires the pressure exerted on the force measuring ring assembly.

[0010] A further improvement of the present invention is that the force measuring ring assembly comprises a circular support ring and a force bearing seat assembly arranged on the support ring, and a plurality of positioning devices are arranged on the circumference of the support ring;

[0011] Wherein, the support ring is sleeved on the outer side surface of the installation shaft, and the positioning device fixes the support ring and the installation shaft coaxially.

[0012] A further improvement of the present invention is that the bearing seat assembly includes a pressure shoe in contact with the hydraulic power unit, and the pressure shoe is connected to a force sensor through a pressure block; the force sensor is connected to the data acquisition and control system;

[0013] The support ring is provided with a plurality of pressure-bearing block mounting holes, and the pressure-bearing blocks are mounted in the pressure-bearing block mounting holes.

[0014] A further improvement of the present invention is that a force bearing seat is connected to the outer side of the force measuring sensor, and the force bearing seat is fixedly connected to the support ring.

[0015] A further improvement of the present invention is that the positioning device includes a positioning screw, the positioning screw passes through the outer wall of the support ring, and its end extends into the interior of the support ring; the end of the positioning screw is provided with a positioning shoe with an arc-shaped inner side.

[0016] A further improvement of the present invention is that a plurality of mounting grooves are arranged on the side wall of the mounting shaft, and the hydraulic power unit is arranged in the mounting grooves.

[0017] A further improvement of the present invention is that the number of the hydraulic power units is at least three, and they are evenly arranged in the circumferential direction of the mounting shaft; the number of the force bearing seat assemblies is the same as the number of the hydraulic power units, and the two are arranged in a one-to-one correspondence.

[0018] A further improvement of the present invention is that V-shaped support members are provided at both ends of the base, and both ends of the mounting shaft are respectively provided on the openings of the V-shaped support members.

[0019] A further improvement of the present invention is that rotatable and lockable rollers are provided on both sides of the V-shaped support member, and the mounting shaft is connected to the rollers and rotates whenever the rollers rotate.

[0020] A further improvement of the present invention is that the data acquisition and control system includes a first computer and a second computer, the first computer is connected to and controls the hydraulic power unit through a first collector; the second computer is connected to the force-bearing seat assembly through a second collector, and collects pressure information received by the force-bearing seat assembly.

[0021] A further improvement of the present invention is that the upper and lower ends of the stabilizing sleeve are connected with mud outer bearings, and the upper and lower ends of the annular groove of the core shaft are provided with mud inner bearings matching with the mud outer bearings.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] A hydraulic power unit testing device of the present invention can test an arc-shaped hydraulic power unit, and can quickly and accurately evaluate the performance of a rotary guide special hydraulic system, and has the advantages of simple structure, convenient operation and accurate measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0025] Figure 1 It is a structural schematic diagram of a hydraulic power unit testing device according to an embodiment of the present invention, showing the connection status of the data acquisition and control system;

[0026] Figure 2 It is a structural schematic diagram of a hydraulic power unit testing device according to an embodiment of the present invention, showing the connection state of the supporting mechanism and the force measuring ring assembly;

[0027] Figure 3 Shown is a schematic structural diagram of a force measuring ring assembly according to an embodiment of the present invention.

[0028] In the drawings, the same reference numerals are used for the same components, but the drawings are not drawn to scale.

[0029] The meanings of the various figure marks in the accompanying drawings are as follows: 1. Support mechanism, 2. Force measuring ring assembly, 3. Data acquisition and control system, 4. Hydraulic power unit, 11. Base, 12. Mounting shaft, 13. V-shaped support, 14. Roller, 21. Support ring, 22. Force bearing seat assembly, 23. Positioning device, 24. Pressure bearing shoe, 25. Pressure bearing block, 26. Force measuring sensor, 27. Force bearing seat, 28. Positioning screw, 29. Positioning shoe, 31. First computer, 32. Second computer, 33. First collector, 34. Second collector. DETAILED DESCRIPTION

[0030] In order to make the technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] FIG1 schematically shows a hydraulic power unit testing device according to an embodiment of the present invention, comprising a supporting mechanism 1. The supporting mechanism 1 comprises a base 11 and a mounting shaft 12, wherein the base 11 is used to support other components. The mounting shaft 12 is arranged on the base 11 and can rotate on the base 11. A hydraulic power unit 4 is arranged on the mounting shaft 12, and the hydraulic power unit 4 can provide hydraulic power and is also the tested component of this embodiment. A force measuring ring assembly 2 is arranged on the outer side of the mounting shaft 12, and the force measuring ring assembly 2 is generally an annular mechanism, which is sleeved on the mounting shaft 12. The force measuring ring assembly 2 receives the pressure applied by the hydraulic power unit 4. The hydraulic power unit testing device described in this embodiment also includes a data acquisition and control system 3, which is connected to the hydraulic power unit 4 and controls the hydraulic power of the hydraulic power unit 4, and the data acquisition and control system 3 is also connected to the force measuring ring assembly 2 and collects the pressure on the force measuring ring assembly 2.

[0032] When the hydraulic power unit test device according to the present embodiment is used for testing, the hydraulic power unit 4 is fixedly mounted on the mounting shaft 12, and the force ring assembly 2 is sleeved on the mounting shaft 12. The hydraulic power unit 4 is started by controlling the data acquisition and control system 3, and the hydraulic power unit 4 applies pressure to the force ring assembly 2. The pressure collected by the force ring assembly 2 is input to the data acquisition and control system 3, and the data acquisition and control system 3 processes the data to achieve measurement and calibration of the hydraulic power unit 4. In the present embodiment, the mounting shaft 12 is rotatably connected to the base 11. When conducting an experiment, the pressure data of the hydraulic power unit 4 in the rotating state can be measured by rotation to be closer to a real rotary guide tool.

[0033] In one embodiment, Figure 2 As shown, the force measuring ring assembly 2 includes a support ring 21 and a bearing seat assembly 22. The support ring 21 is a circular ring structure, and its inner diameter is larger than the outer diameter of the mounting shaft 12, so that the support ring 21 can be sleeved on the outside of the mounting shaft 12. A plurality of positioning devices 23 are arranged on the circumference of the support ring 21, and the positioning devices 23 can fix the positions of the support ring 21 and the mounting shaft 12 to avoid relative rotation between the support ring 21 and the mounting shaft 12, and can also ensure that the support ring 21 and the mounting shaft 12 are coaxial. The bearing seat assembly 22 can withstand the pressure applied by the hydraulic power unit 4 and transmit the pressure data to the data acquisition and control system 3.

[0034] In a preferred embodiment, Figure 3As shown, the bearing seat assembly 22 includes a pressure shoe, which contacts the hydraulic power unit 4 and receives the pressure applied by the hydraulic power unit 4. The inner side surface of the pressure shoe (the side facing the hydraulic power unit 4) is arc-shaped, and its curvature corresponds to the curvature of the outer wall of the hydraulic power unit 4 and the outer wall of the mounting shaft 12, so that the inner side surface of the pressure shoe matches the outer side surface of the hydraulic power unit 4. The outer side surface of the pressure shoe (the side away from the hydraulic power unit 4) is connected to a pressure block 25, and the outer side surface of the pressure block 25 is connected to a force sensor 26.

[0035] In this embodiment, the pressure shoe 24 and the pressure block 25 play the role of transmitting pressure, the force sensor 26 is used to measure the transmitted pressure, and the force sensor 26 is connected to the data acquisition and control system 3 through a wire to transmit the collected pressure data to the data acquisition and control system 3.

[0036] A plurality of mounting holes for the pressure bearing block 25 are arranged on the circumference of the support ring 21. The mounting holes for the pressure bearing block 25 are through holes, and their shapes match those of the pressure bearing block 25, and are used to mount the pressure bearing block 25. The pressure bearing block 25 can slide in a small range in the pressure bearing hole to transmit pressure.

[0037] In a preferred embodiment, the inner surface of the pressure shoe 24 is in an arc shape that is buckled with the outer surface of the mounting shaft 12, and the outer surface is a semi-spherical protrusion, and the whole is in an elongated strip shape, and each elongated pressure shoe 24 corresponds to an actuator of the hydraulic power unit 4. The pressure block 25 is a cylinder with a hemispherical depression on the inner surface that is buckled with the hemispherical protrusion on the outer surface of the pressure shoe 24, and a circular plane on the outer surface. The force sensor 26 is a cylinder with a force measuring plane on the lower surface, a plane with screw holes on the upper surface, and wires coming out of the side wall.

[0038] In one embodiment, Figure 3 As shown, the outer side of the force sensor 26 is connected to a bearing seat 27, and the bearing seat 27 is fixedly connected to the support ring 21. In this embodiment, the bearing seat 27 is connected to the support ring 21 by a large screw, and the bearing seat 27 is connected to the force sensor 26 by a small screw. Preferably, the bearing seat 27 is square as a whole, with a cylindrical hole in the center of the inner surface, a screw hole for fixing the force sensor 26 and a large screw hole for fixing the bearing seat 27 on the upper surface, and a wire outlet hole for the force sensor 26 is left on the side.

[0039] In the hydraulic power unit testing device according to the present embodiment, the force bearing seat 27 can play a role in supporting the force sensor 26. When the force sensor 26 receives the pressure transmitted by the pressure bearing block 25 and the pressure bearing shoe 24, due to the support of the force bearing seat 27, the force sensor 26 will not move with the pressure, so that a more accurate result can be measured.

[0040] In one embodiment, the positioning device 23 includes a positioning screw 28 and a positioning shoe 29 arranged at the end of the positioning screw 28. In this embodiment, the end of the positioning screw 28 is the end away from the screw head. A plurality of screw holes are arranged on the outer wall of the support ring 21, and the screw holes match the positioning screw 28. The positioning screw 28 is screwed into the screw hole, and its end extends into the interior of the support ring 21. The positioning shoe 29 is arranged at the end of the positioning screw 28, between the support ring 21 and the mounting shaft 12, and is used to support the support ring 21 and the mounting shaft 12. Among them, the inner side of the positioning shoe 29 is an arc-shaped structure, and the curvature of the inner side matches the curvature of the outer wall of the mounting shaft 12.

[0041] In such Figure 3 In the embodiment shown, the positioning devices 23 are evenly arranged on the circumference of the positioning ring, and the number of the positioning devices 23 is at least three, and the angle between two positioning devices 23 is at most 120 degrees. In this way, the positioning devices 23 and the mounting shaft 12 can be evenly supported to ensure stability. When connecting the support ring 21 and the mounting shaft 12, the support ring 21 is sleeved on the mounting shaft 12, and the positioning shoe 29 is pushed against the mounting shaft 12 by rotating the positioning screw 28, so that the support ring 21 and the mounting shaft 12 are fixed.

[0042] In one embodiment, a plurality of mounting grooves are provided on the side wall of the mounting shaft 12, and the hydraulic power unit 4 is provided in the mounting grooves. The main body of the hydraulic power unit 4 is an arc-shaped mechanism, and its arc matches the arc of the side wall of the mounting shaft 12. After the hydraulic power unit 4 is installed, the inner diameter and outer diameter are respectively the same as those of the mounting shaft 12.

[0043] In a preferred embodiment, the number of the hydraulic power units 4 is at least three, which are evenly arranged in the circumferential direction of the mounting shaft 12; the number of the force-bearing seat assemblies 22 is the same as the number of the hydraulic power units 4, and each force-bearing seat assembly 22 corresponds to a hydraulic power unit 4.

[0044] In one embodiment, Figure 1 As shown, V-shaped support members 13 are provided at both ends of the base 11, a V-shaped opening is provided at the upper end of the V-shaped support member 13, and the mounting shaft 12 is provided between the V-shaped openings. Preferably, rotatable and lockable rollers 14 are provided on both sides of the V-shaped support member 13, and the mounting shaft 12 is connected to the rollers 14 and rotates when the rollers 14 rotate.

[0045] When the hydraulic power unit testing device according to the present embodiment is used, the mounting shaft 12 can be driven to rotate by rotating the roller 14, and during the test, the actual rotating state of the rotary guide tool during operation can be simulated.

[0046] In one embodiment, the data acquisition and control system 3 includes a first computer 31, the first computer 31 is connected to a first collector 33, and the first collector 33 is connected to the hydraulic power unit 4. The first computer 31 outputs a control instruction to the hydraulic power unit 4 to control the action of the hydraulic power unit 4. The data acquisition and control system 3 also includes a second computer 32, the second computer 32 is connected to a second collector 34, and the second collector 34 is connected to the force sensor 26 of the bearing seat assembly 22 through a wire. The force sensor 26 detects the pressure information from the hydraulic power unit and transmits it to the second computer through the second collector 34. The second computer analyzes and processes the pressure information.

[0047] In this embodiment, the installation shaft 12 is a cylindrical structure, and the first collector 33 is connected to three hydraulic power units 4 through three groups of signal lines. The three groups of signal lines extend into the installation shaft 12 through the central hole of the installation shaft 12 and connect the hydraulic power units 4.

[0048] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and / or modifications that fall within the scope of the present invention, and changes and / or modifications made according to the embodiments of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydraulic power unit testing device, characterized in that: include: A support mechanism (1), the support mechanism (1) comprising a base (11) and a mounting shaft (12) arranged on the base (11); A hydraulic power unit (4) mounted on the mounting shaft (12), wherein the hydraulic power unit (4) provides hydraulic pressure; a force measuring ring assembly (2) sleeved on the installation shaft (12), the force measuring ring assembly (2) receiving the pressure applied by the hydraulic power unit (4); the force measuring ring assembly (2) comprising a circular support ring (21) and a force bearing seat assembly (22) arranged on the support ring (21), and a plurality of positioning devices (23) being arranged in the circumferential direction of the support ring (21); wherein the support ring (21) is sleeved on the outer side surface of the installation shaft (12), and the positioning devices (23) fix the support ring (21) and the installation shaft (12) coaxially; and A data acquisition and control system (3), wherein the data acquisition and control system (3) is connected to the hydraulic power unit (4) and controls the hydraulic power of the hydraulic power unit (4), and the data acquisition and control system (3) is also connected to the force measuring ring assembly (2) and collects the pressure exerted on the force measuring ring assembly (2); The bearing seat assembly (22) comprises a pressure shoe (24) in contact with the hydraulic power unit (4); the pressure shoe (24) is connected to a force sensor (26) via a pressure block (25); the force sensor (26) is connected to the data acquisition and control system (3); The support ring (21) is provided with a plurality of pressure block mounting holes, and the pressure blocks (25) are mounted in the pressure block mounting holes; The side of the pressure shoe facing the hydraulic power unit (4) is arc-shaped, and its curvature corresponds to the curvature of the outer wall of the hydraulic power unit (4) and the outer wall of the mounting shaft (12), so that the inner side surface of the pressure shoe matches the outer side surface of the hydraulic power unit (4); the side of the pressure shoe away from the hydraulic power unit (4) is connected to a pressure block (25), and the outer side surface of the pressure block (25) is connected to a force sensor (26).

2. The hydraulic power unit testing device according to claim 1, characterized in that: A force bearing seat (27) is connected to the outer side of the force sensor (26), and the force bearing seat (27) is fixedly connected to the support ring (21).

3. The hydraulic power unit testing device according to claim 2, characterized in that: The positioning device (23) comprises a positioning screw (28), wherein the positioning screw (28) passes through the outer wall of the support ring (21), and an end portion thereof extends into the interior of the support ring (21); a positioning shoe (29) having an arc-shaped inner side is provided at the end portion of the positioning screw (28).

4. The hydraulic power unit testing device according to any one of claims 1 to 3, characterized in that: A plurality of mounting grooves are provided on the side wall of the mounting shaft (12), and the hydraulic power unit (4) is arranged in the mounting grooves.

5. The hydraulic power unit testing device according to claim 4, characterized in that: The number of the hydraulic power units (4) is at least three, and they are evenly arranged in the circumferential direction of the mounting shaft (12); the number of the bearing seat assemblies (22) is the same as the number of the hydraulic power units (4), and the two are arranged in a one-to-one correspondence.

6. The hydraulic power unit testing device according to claim 5, characterized in that: V-shaped support members (13) are provided at both ends of the base (11), and both ends of the mounting shaft (12) are respectively provided on openings of the V-shaped support members (13).

7. The hydraulic power unit testing device according to claim 6, characterized in that: Rotatable and lockable rollers (14) are provided on both sides of the V-shaped support member (13); the mounting shaft (12) is connected to the rollers (14) and rotates with the rotation of the rollers (14).

8. The hydraulic power unit testing device according to claim 7, characterized in that: The data acquisition and control system (3) comprises a first computer (31) and a second computer (32); the first computer (31) is connected to and controls the hydraulic power unit (4) via a first collector (33); the second computer is connected to the bearing seat assembly (22) via a second collector (34) and acquires pressure information received by the bearing seat assembly (22).

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