High-speed motor pump test calibration device and calibration method

Abstract

The invention relates to the technical field of oil field oil production engineering, in particular to a high-speed motor pump test calibration device and calibration method. The problem that a high-speed motor pump in an existing hydraulic actuator cannot be independently tested before being assembled is mainly solved. The test box (3) is provided with a plurality of testers (4), each tester (4) comprises a lower pressure-bearing cylinder (413), the upper part of the lower pressure-bearing cylinder (413) is connected with a test cylinder (405), the upper end of the test cylinder (405) is connected with a gland (404), the side wall of the test cylinder (405) is respectively connected with an electric appliance joint (406) and an oil path joint (407), the bottom of the lower pressure-bearing cylinder (413) is provided with an oil path outlet (416), and the side wall of the lower pressure-bearing cylinder (413) is connected with a pressure gauge (415). According to the high-speed motor pump testing and calibrating device, the high-speed motor pump in the hydraulic actuator can be independently tested before the hydraulic actuator is assembled, the guiding precision of the assembled hydraulic actuator is guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of surface testing instruments for oil drilling, specifically a high-speed motor pump testing and calibration device and method. Background Technology

[0002] Rotary steerable drilling systems integrate drilling, logging, and reservoir engineering technologies. They utilize geological and engineering parameter measurements and drilling-while-drilling control to ensure the drilled wellbore penetrates the reservoir and achieves the optimal position. These systems feature strong oil and gas layer identification and guidance capabilities. This system enables true geological steering and represents a high-tech drilling technology for the 21st century. Currently, in rotary steerable drilling tools, the hydraulic actuator is the mechanism that performs the steering function. However, testing can only be conducted after the hydraulic actuator is assembled using pressure sensors. The high-speed motor pump within the hydraulic actuator cannot be tested separately before assembly, which impacts work efficiency and wastes resources. Summary of the Invention

[0003] To overcome the shortcomings of existing hydraulic actuators where the high-speed motor pump cannot be tested separately before assembly, this invention provides a high-speed motor pump testing and calibration device and method. This high-speed motor pump testing and calibration device can test the high-speed motor pump inside the hydraulic actuator separately before assembly, ensuring the guiding accuracy of the hydraulic actuator after assembly and improving work efficiency.

[0004] The technical solution of the present invention is: a high-speed motor pump testing and calibration device, comprising a test box, wherein the test box is provided with a plurality of testers, each tester comprising a lower pressure bearing cylinder, the upper part of the lower pressure bearing cylinder being connected to a test cylinder, the upper end of the test cylinder being connected to a pressure cap, an electrical connector and an oil circuit connector being respectively connected to the side wall of the test cylinder, an oil circuit outlet being opened at the bottom of the lower pressure bearing cylinder, and a pressure gauge being connected to the side wall of the lower pressure bearing cylinder.

[0005] Furthermore, the electrical connector is connected to the drive circuit, the oil line connector is connected to the oil tank, the oil tank is connected to the oil pump, and the oil pump is connected to the drive motor; the drive circuit, the drive motor, and the pressure gauge are all connected to the control console, which is equipped with a display.

[0006] Furthermore, the oil outlet is connected to the return oil tank, and the return oil tank and the filling oil tank are connected by a pipeline.

[0007] Furthermore, a motor pump is placed inside the test cylinder, with the bottom of the motor pump located inside the lower pressure cylinder. The bottom of the lower pressure cylinder is provided with a fixed connector that is connected to the motor pump connector, and the circuit connector is connected to the fixed connector through a wire.

[0008] Furthermore, the upper end of the lower pressure cylinder is connected to a glass observation window, the upper end of the glass observation window is connected to an oil collecting ring, a sealing connecting cylinder is provided above the oil collecting ring, and the test cylinder is connected to the sealing connecting cylinder.

[0009] Furthermore, the glass observation window is provided with a support column on its exterior, with the upper and lower ends of the support column connected to the oil collecting ring and the lower pressure cylinder, respectively.

[0010] Furthermore, a quick-balancing frame is externally connected to the sealed connecting cylinder, and a handle is connected to the top of the quick-balancing frame via a screw.

[0011] Furthermore, the control console includes a lower control console support frame, on which a main power switch, an oil pump switch, a power switch, and an oil drain switch are provided.

[0012] Furthermore, there are three testers, and the control panel is equipped with corresponding power switches and oil drain switches.

[0013] A calibration method for a high-speed motor pump test calibration device according to any one of the claims includes the following steps:

[0014] S1. Place the motor pump into the tester and connect the motor pump connector to the fixed joint at the bottom of the lower pressure cylinder.

[0015] S2. Start the oil pump to inject the hydraulic oil in the oil tank into the tester; and set the motor speed r1 in the motor pump and the hydraulic oil pressure P1 injected into the tester through the display.

[0016] S3. After the motor rotation stabilizes, the sensor inside the motor pump measures the actual motor speed r. 1实 The pressure gauge measures the pressure P on the motor pump. 1实 And transmit the data to the control system;

[0017] S4. The calculation and control system calculates the difference r between the actual motor speed and the set motor speed. 1差 ;

[0018] r 1差 =r1-r 1实

[0019] S5. Display the calculation results on the computer interface, and then issue commands through the computer control system to decrease or increase its rotational speed. 1差 ;

[0020] S6. Repeat steps S4 and S5, and check r. 1差 If the value is 0, repeat steps S4 and S5; if the value is 0, set the motor speed in the motor pump to r2 and repeat steps S2 to S5.

[0021] S7, View r 2差 If the value is within ±3, repeat steps S4 and S5 until r is reached. 2差Within ±3 r / min;

[0022] S8. Adjust the motor speed in the electric pump to r1, and repeat steps S4 and S5. If r1 is satisfied... 1差 If it is within ±3 r / min, proceed to the next step; otherwise, repeat S4 to S7.

[0023] S9. Adjust the motor speed in the electric pump to r3, and repeat the above steps. When the motor speed of the direct motor pump reaches the rated maximum speed, and the above results are met, the test ends.

[0024] Furthermore, in step S1, the number of motor pumps is no greater than the number of testers, and one motor pump is placed in each tester.

[0025] Furthermore, the motor speeds are set to 1000 r / min, 3000 r / min, and 5000 r / min, respectively, and the hydraulic oil pressure is adjusted at the corresponding speeds.

[0026] The present invention has the following beneficial effects: Due to the above-mentioned scheme, the testing and calibration device is equipped with multiple testers, allowing the motor pump to be tested individually or simultaneously with multiple motor pumps without interference. This enables testing of the high-speed motor pump within the hydraulic actuator before assembly, ensuring the working accuracy of the assembled hydraulic actuator and thus improving work efficiency. Each tester in the testing and calibration device can test the motor pump's speed, current, PWM, and force under several pressure conditions, and can also test the motor pump's performance under a single pressure condition, as well as the calibration and scaling of various sensors; the entire testing process is automatically controlled by a computer. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention;

[0028] Figure 2 This is the front view of the present invention;

[0029] Figure 3 This is the main view of the tester;

[0030] Figure 4 It is along Figure 3 Sectional view of AA;

[0031] Figure 5 It is along Figure 3 Sectional view of BB;

[0032] Figure 6 This is a schematic diagram of each test button in this invention.

[0033] In the diagram: 1-Control console, 2-Display, 3-Test box, 4-Tester, 5-Drive circuit, 6-Upper operating platform, 7-Oil tank, 8-Oil return tank, 9-Drive motor, 101-Main power switch, 102-Low flow rate indicator light, 103-Low oil level indicator light, 104-Oil pump operation indicator light, 105-Pressure value window for tester 1, 106-Pressure value window for tester 2, 107-Pressure value window for tester 3, 108-Temperature display window, 109-Power button, 110-Power indicator light, 111-Oil pump switch, 112-Lower control console support frame, 301-Power switch for tester 1, 302-Oil drain switch for tester 1, 303-Power switch for tester 2, 304-Oil pump operation indicator light. 305 - Power switch for tester #3; 306 - Oil drain switch for tester #3; 307 - Lower operating platform; 401 - Handle; 402 - Quick balancing frame; 403 - Bolt rod; 404 - Pressure cap; 405 - Test cylinder; 406 - Electrical connector; 407 - Oil circuit connector; 408 - Sealing connection cylinder; 409 - Oil collection ring; 410 - Glass observation window; 411 - Support column; 412 - Lower sealing cover; 413 - Lower pressure bearing cylinder; 414 - Base; 415 - Pressure gauge; 416 - Oil circuit outlet; 417 - Sealing ring A; 418 - Sealing ring B; 419 - Fixing bolt A; 420 - Sealing ring C; 421 - Fixing bolt B; 422 - Motor pump; 423 - Fixing bolt D. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "top," and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Depend on Figures 1 to 6As shown, a high-speed motor pump testing and calibration device includes a test chamber 3, on which several testers 4 are provided. Each tester 4 contains a motor pump 422. Multiple testers 4 can be set as needed, and they can be tested individually or simultaneously without interference. Preferably, three testers 4 are used in practical applications. The test chamber 3 contains an oil filling tank 7, an oil return tank 8, and a drive motor 9. The oil filling tank 7 and the oil return tank 8 are connected by pipelines. The oil pump is connected to the oil filling tank 7, and the oil pump is connected to the drive motor 9. The drive motor 9 and the testers 4 are all connected to a control console 1. The control console 1 is equipped with a main power switch 101 and an oil pump switch 111, as well as power and drain switches corresponding to each tester. The operation of the tester 4 is controlled by each switch. The control console 1 is connected to a display 2, which can display the hydraulic oil pressure and motor speed. At the same time, commands can be sent to the control system on the display 2 to adjust the pressure and speed, and the data and test results are displayed on the display 2.

[0037] The test box 3 includes a lower operating table 307, on which various switches are provided (see...). Figure 6 Since three testers 4 can be set, the lower control panel 307 is equipped with corresponding power switches 301, 302, 303, 304, 305, and 306 for each tester 4, allowing for separate control of the three testers 4. This enables the three testers 4 to be tested individually or simultaneously.

[0038] The tester 4 is described. Figures 3 to 5 The system includes a lower pressure-bearing cylinder 413, with a lower sealing cover 412 connected to the upper part of the lower pressure-bearing cylinder 413 via a fixing bolt A419. A sealing ring C420 is provided between the lower pressure-bearing cylinder 413 and the lower sealing cover 412. The top of the lower sealing cover 412 is connected to an oil collecting ring 409 via a glass observation window 410, allowing observation of the testing status of the internal motor pump 422. Several support columns 411 are provided on the outside of the glass observation window 410, with the upper and lower ends of the support columns 411 connected to the oil collecting ring 409 and the lower sealing cover 412 respectively, thereby reducing the pressure on the glass observation window 410. A sealing connecting cylinder 408 is provided above the oil collecting ring 409, and the sealing connecting cylinder 408 is located inside the oil collecting ring 409. The test cylinder 405 is connected inside the sealing connecting cylinder 408. The upper end of the test cylinder 405 is connected to the pressure cap 404 by a fixing bolt D423. A sealing ring A417 is provided between the top of the test cylinder 405 and the pressure cap 404. A sealing ring B418 is provided between the outer wall of the test cylinder 405 and the inside of the sealing connecting cylinder 408. The bottom of the lower pressure bearing cylinder 413 is connected to the base 414 by a fixing bolt B421.

[0039] Electrical connectors 406 and oil line connectors 407 are connected to the side walls of the test cylinder 405. An oil outlet 416 is located at the bottom of the lower pressure cylinder 413, and a pressure gauge 415 is connected to its side wall. During testing, hydraulic oil enters the test cylinder 405 through the oil line connector 407, and the pressure gauge 415 measures the pressure inside the cylinder. When depressurized, the hydraulic oil flows back to the return oil tank 8 through the oil outlet 416. A fixed connector is located at the bottom of the lower pressure cylinder 413, which connects to the connector at the tail of the motor pump. This fixed connector is connected to the electrical connector 406 via a wire. During operation, a motor pump 422 is placed inside the test cylinder 405, with its bottom located inside the lower pressure cylinder 413. The connector at the bottom of the motor pump is connected to the fixed connector inside the lower pressure cylinder 413. The electrical connector 406 connects to the drive circuit 5, the oil line connector 407 connects to the oil filling tank 7, and the oil outlet 416 connects to the return oil tank 8. The drive circuit 5, drive motor 9, and pressure gauge 415 are all connected to the control console 1, controlled by the control system, and the test results are displayed on the display 2.

[0040] The test cylinder 405 is equipped with a quick-balancing frame 2. The bottom of the quick-balancing frame 2 can be connected to the sealed connecting cylinder 408, and the top of the quick-balancing frame 2 is connected to the handle 401 via a screw 403. At the same time, a glass observation window 410 is opened on the side wall of the middle part of the oil collecting ring 409, through which the motor pump test process can be observed.

[0041] The console 1 includes a lower console support frame 112, and the display 2 is fixed above the lower console support frame 112. Figure 6 The lower control console support frame 112 is equipped with a main power switch 101, an oil pump switch 111, a low flow rate indicator 102, a low oil level indicator 103, and an oil pump operation indicator 104. The operating status of the tester 4 is monitored by the display of these indicator lights. Additionally, the lower control console support frame 112 is equipped with pressure value windows 105, 106, and 107 for each tester to display the pressure value within each tester. The lower control console support frame 112 also includes a temperature display window 108, a power button 109, and a power indicator light 110.

[0042] The calibration method for the high-speed motor pump test calibration device includes the following steps:

[0043] S1. Place the motor pump 422 to be tested into the tester 4, and connect the connector of the motor pump 4 to the fixed joint at the bottom of the lower pressure cylinder 413. The number of motor pumps 422 is not greater than the number of testers 4. One or more can be tested at the same time, and one motor pump 422 is placed in each tester 4.

[0044] S2. Turn on the main power switch 101 and oil pump switch 111 on the control panel 1, and start the corresponding tester power switch on the test box 3. This will drive the motor 9 and oil pump to inject the hydraulic oil in the oil tank 7 into the tester 4. Input commands through the display 2 to set the motor speed r1 in the motor pump 422 and the hydraulic oil pressure P1 injected into the tester 4.

[0045] S3. After the motor rotation stabilizes, the sensor inside the motor pump 422 measures the actual motor speed r. 1实 Pressure gauge 415 tests the pressure P on the motor pump. 1实 The data is transmitted to the control system and the test data is simultaneously displayed in the corresponding windows on display 2 and test box 3.

[0046] S4. Due to the potential error between the actual motor speed and the set speed: the control system calculates the difference r between the actual motor speed and the set motor speed. 1差 :

[0047] r 1差 =r1-r 1实

[0048] S5. The calculation results are displayed on the computer interface. Simultaneously, commands are issued through the computer control system to correct the motor speed, decreasing or increasing it by r. 1差 .

[0049] S6. Repeat steps S4 and S5, and check r. 1差 If the value is 0, repeat steps S4 and S5; if the value is 0, set the motor speed r2 in motor pump 422 and repeat steps S2 to S5.

[0050] S7, View r 2差 If the speed is within ±3 r / min, repeat steps S4 and S5 until the speed is within this range. 2差 It must be within ±3.

[0051] S8. Adjust the motor speed in motor pump 422 to r1, and repeat steps S4 and S5. If r1 is satisfied... 1差 If it is within ±3 r / min, proceed to the next step; otherwise, repeat S4 to S7.

[0052] S9. Adjust the motor speed in the motor pump 422 to r3, repeat the above steps, and when the motor speed of the direct motor pump 422 is the rated maximum speed, the test ends after the above results are met.

[0053] In the above steps, the motor speeds r1, r2, and r3 can be 1000 r / min, 3000 r / min, and 5000 r / min, respectively, and the hydraulic oil pressure can be adjusted at the corresponding speeds.

[0054] This high-speed motor pump testing and calibration device is equipped with multiple testers, allowing multiple motor pump assemblies to be tested individually or simultaneously without interference between them. Each tester can test the motor speed, motor current, PWM (pulse width modulation), and force of the motor pump under several pressure conditions. It can also perform motor pump performance testing under a specific pressure condition and calibrate and scale various sensors via a switching valve.

[0055] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A high-speed motor pump testing and calibration device, comprising a test chamber (3), characterized in that: The test box (3) is equipped with several testers (4). Each tester (4) includes a lower pressure cylinder (413), a test cylinder (405) is connected to the upper part of the lower pressure cylinder (413), a pressure cap (404) is connected to the upper end of the test cylinder (405), an electrical connector (406) and an oil circuit connector (407) are connected to the side wall of the test cylinder (405), an oil circuit outlet (416) is opened at the bottom of the lower pressure cylinder (413), and a pressure gauge (415) is connected to the side wall of the lower pressure cylinder (413).

2. The high-speed motor pump testing and calibration device according to claim 1, characterized in that: The electrical connector (406) is connected to the drive circuit (5), the oil line connector (407) is connected to the oil tank (7), the oil tank (7) is connected to the oil pump, and the oil pump is connected to the drive motor (9); the drive circuit (5), the drive motor (9), and the pressure gauge (415) are all connected to the control console (1), and the control console (1) is equipped with a display (2).

3. The high-speed motor pump testing and calibration device according to claim 2, characterized in that: The oil outlet (416) is connected to the return oil tank (8), and the return oil tank (8) and the filling oil tank (7) are connected by a pipeline.

4. The high-speed motor pump testing and calibration device according to claim 3, characterized in that: The test cylinder (405) contains a motor pump (422), the bottom of which is located inside the lower pressure cylinder (413). The bottom of the lower pressure cylinder (413) is provided with a fixed connector that is connected to the motor pump (422) connector. The circuit connector (406) is connected to the fixed connector through a wire.

5. The high-speed motor pump testing and calibration device according to claim 1, characterized in that: The upper end of the lower pressure cylinder (413) is connected to a glass observation window (410), the upper end of the glass observation window (410) is connected to an oil collection ring (409), a sealing connecting cylinder (408) is provided above the oil collection ring (409), and the test cylinder (405) is connected to the sealing connecting cylinder (408).

6. The high-speed motor pump testing and calibration device according to claim 5, characterized in that: The glass observation window (410) is provided with a support column (411) on the outside. The upper and lower ends of the support column (411) are respectively connected to the oil collecting ring (409) and the lower pressure cylinder (413).

7. The high-speed motor pump testing and calibration device according to claim 5, characterized in that: The sealing connecting cylinder (408) is externally connected to the quick balancing frame (2), and the top of the quick balancing frame (2) is connected to the handle (401) via a screw (403).

8. The high-speed motor pump testing and calibration device according to claim 2, characterized in that: The control console (1) includes a lower control console support frame (112), which is equipped with a main power switch (101), an oil pump switch (111), a power switch and an oil drain switch.

9. The high-speed motor pump testing and calibration device according to claim 8, characterized in that: There are three testers (4), and the control console (1) is equipped with corresponding power switches and oil drain switches.

10. A calibration method for a high-speed motor pump testing and calibration device according to any one of claims 1-9, characterized in that... Includes the following steps: S1. Place the motor pump (422) into the tester (4) and connect the connector of the motor pump (4) to the fixed joint at the bottom of the lower pressure cylinder (413); S2. Start the oil pump to inject the hydraulic oil in the oil tank (7) into the tester (4); and set the motor speed r1 in the motor pump (422) and the hydraulic oil pressure P1 injected into the tester (4) through the display (2); S3. After the motor rotation stabilizes, the sensor inside the motor pump (422) measures the actual motor speed r. 1实 Pressure gauge (415) measures the pressure P on the motor pump. 1实 And transmit the data to the control system; S4. The calculation and control system calculates the difference r between the actual motor speed and the set motor speed. 1差 ; r 1差 ＝r1-r 1实 S5. Display the calculation results on the computer interface, and then issue commands through the computer control system to decrease or increase its rotational speed by r. 1差 ; S6. Repeat steps S4 and S5, and check r. 1差 If the value is 0, repeat steps S4 and S5; if the value is 0, set the motor speed in the motor pump (422) to r2, and repeat steps S2 to S5. S7, View r 2差 If the value is within ±3, repeat steps S4 and S5 until r is reached. 2差 Within ±3 r / min; S8. Adjust the motor speed in the motor pump (422) to r1, and repeat steps S4 and S5. If r1 is satisfied... 1差 If it is within ±3 r / min, proceed to the next step; otherwise, repeat S4 to S7. S9. Adjust the motor speed in the electric motor pump (422) to r3, repeat the above steps, and when the motor speed of the direct motor pump (422) is the rated maximum speed, the test ends after the above results are met.

11. The calibration method for the high-speed motor pump testing and calibration device according to claim 10, characterized in that: In step S1, the number of motor pumps (422) is no greater than the number of testers (4), and one motor pump (422) is placed in each tester (4).

12. The calibration method for the high-speed motor pump testing and calibration device according to claim 11, characterized in that: The motor speeds are set to 1000 r / min, 3000 r / min, and 5000 r / min, respectively, and the hydraulic oil pressure is adjusted at the corresponding speeds.

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