Mobile oil well pump pressure test device and method

Abstract

The invention discloses a mobile oil well pump pressure test device and method.The pressure test device comprises a mobile vehicle body, an oil tank, a booster pump, a driving motor, a pressure test manifold, a high-pressure hose, an air source and a weighing device, and the oil tank, the booster pump, the driving motor, the pressure test manifold, the high-pressure hose, the air source and the weighing device are arranged on the vehicle body. An inlet of the booster pump is connected with the oil tank, an outlet of the booster pump is connected with an inlet of the pressure test manifold, an outlet of the pressure test manifold is connected with one end of the high-pressure hose, the other end of the high-pressure hose is connected with an inlet of the oil well pump, and a control valve on the pressure test manifold is a pneumatic control valve which is connected with an air source. Pressure test related devices are integrally arranged in the vehicle body, and the defects that a large amount of time is consumed before and after testing, the efficiency is low, pump test equipment is greatly limited by environments and places, and the working efficiency is high due to the fact that oil-well pumps in oil fields are mostly transported from a storehouse to a pump test room for testing and then transported to a well site for use after the oil-well pumps are qualified at present are overcome. And the oil well pump pressure test requirements of flexible environments and places of oil fields cannot be met.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure testing, and in particular relates to a mobile oil well pump pressure testing device and method. Background Art

[0002] The oil pump is an important component of the rod oil production system. Before the new oil pump or the overhauled oil pump is lowered into the well, the sealing performance and leakage test of the oil pump are required. At present, the oil pumps in the oil field are mostly transported from the warehouse to the pump inspection room for inspection and testing before being lowered into the well. After the test is qualified, they are transported to the well site for use. The test takes a lot of time before and after, and the efficiency is low. The use of the pump inspection test equipment is greatly restricted by the environment and location, and cannot meet the flexible environment and location of the oil field. The oil pump pressure test needs. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a mobile oil well pump pressure testing device and method, which can realize flexible on-site pressure testing at any time through a skid-mounted integrated pressure testing device.

[0004] The specific technical contents of the present invention are as follows:

[0005] A mobile oil pump pressure test device comprises a movable vehicle body and an oil tank, a booster pump, a driving motor, a pressure test manifold, a high-pressure hose, an air source and a weighing device arranged on the vehicle body, wherein the driving motor is connected to the booster pump and is used to drive the booster pump to operate, the inlet of the booster pump is connected to the oil tank, the outlet of the booster pump is connected to the inlet of the pressure test manifold, the outlet of the pressure test manifold is connected to one end of the high-pressure hose, the other end of the high-pressure hose can be connected to the inlet of the oil pump, and the control valve on the pressure test manifold adopts an air-controlled valve, which is connected to the air source.

[0006] Preferably, the oil tank includes a main oil tank and an auxiliary oil tank, both of which adopt a horizontal structure, the main oil tank and the auxiliary oil tank are connected, and the bottom of the main oil tank and the auxiliary oil tank are provided with oil drain holes, and the inlet of the boost pump is connected to the main oil tank.

[0007] Preferably, a glass tube level gauge is provided on the main oil tank.

[0008] Preferably, the booster pump is a plunger pump, and the drive motor is a variable frequency motor.

[0009] Preferably, the high-pressure hose is wound on a high-pressure hose reel, the high-pressure hose reel has an automatic winding device, and the high-pressure hose reel is arranged on the vehicle body.

[0010] Preferably, the end of the high-pressure hose is provided with a quick sealing joint that can be connected to the inlet of the oil pump.

[0011] Preferably, the air source is an air compressor.

[0012] Preferably, the weighing device includes a high-range electronic scale and a low-range electronic scale.

[0013] Preferably, the mobile oil well pump pressure test device of the present invention further comprises an industrial computer, and the drive motor, the opening and closing of the control valve on the pressure test manifold and the weighing device are all connected to the industrial computer;

[0014] The industrial computer is used to control the rotation of the drive motor, control the action of the control valve and receive the weighing result data of the weighing device.

[0015] The present invention also provides a mobile oil well pump pressure testing method, which is performed using the mobile oil well pump pressure testing device of the present invention as described above, and includes the following process:

[0016] Move the vehicle body to the pressure test position and fix the vehicle body;

[0017] Connect the high-pressure hose to the inlet of the oil pump;

[0018] Start the driving motor to make the booster pump pressurize the test oil in the oil tank and then deliver it to the oil pump through the pressure test manifold and the high-pressure hose. When the oil pressure at the inlet of the oil pump is stable, perform a sealing test on the oil pump. During the sealing test, cut off the output oil circuit of the booster pump through the control valve on the pressure test manifold, maintain the pressure of the test oil at the inlet of the oil pump, and measure and record the pressure of the pressure-maintaining oil using the pressure gauge on the pressure test manifold.

[0019] After the sealing test of the oil well pump is completed, the leakage of the oil well pump is measured, and the leaked test pressure oil is collected by a container. After the collection time is preset, the collected leaked test pressure oil is measured and recorded by a weighing device.

[0020] The present invention has the following beneficial effects:

[0021] The mobile oil pump pressure test device of the present invention integrates the device for testing the sealing performance and leakage of the oil pump on a movable vehicle body, so that it is convenient to test the sealing performance and leakage of the oil pump at the installation site of the oil pump, so that the detection environment of the oil pump is close to the actual use environment, and the measurement result is relatively more accurate and reliable. In the present invention, a driving motor is set as a driving device for increasing the pump, and the pressure test oil can be pressurized by using a booster pump. The oil tank is set to store the pressure test oil to meet the needs of the installation site test. The pressure test manifold can meet the control requirements of the oil circuit when conducting sealing performance and leakage tests, and the integration is relatively high. Using a high-pressure hose to transport oil can not only play the role of oil transportation, but also play the role of pressure maintenance. When conducting a sealing performance test, the elasticity of the high-pressure hose can maintain the inlet pressure of the oil pump at the experimental pressure, and can continuously provide pressure for the pressure test oil to ensure the requirements of the sealing performance test. In summary, the mobile oil pump pressure testing device of the present invention can realize the sealing performance and leakage test at the oil pump installation site, which can optimize the existing cumbersome experimental process, reduce the experimental cycle, and improve the experimental efficiency. At the same time, it can also make the environment for the sealing performance and leakage test of the oil pump closer to the actual working environment, and the experimental results are more reliable. At the same time, there are fewer restrictions on the test environment and location, which can meet the oil pump pressure testing needs in flexible environments and locations of oil fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the dynamic oil well pump pressure testing device of the present invention;

[0023] Figure 2 It is a structural front view of the dynamic oil well pump pressure testing device of the present invention;

[0024] Figure 3 It is a rear view of the structure of the dynamic oil well pump pressure testing device of the present invention;

[0025] Figure 4 It is a structural side view of the dynamic oil pump pressure testing device of the present invention.

[0026] In the figure, 1 is a main fuel tank, 2 is an auxiliary fuel tank, 3 is a plunger pump, 4 is an air compressor, 5 is an air control valve, 6 is a pressure test manifold, 7 is a power cord reel, 8 is a high-pressure hose reel, 9 is a touch-type industrial computer, 10 is a high-range electronic scale, 11 is a low-range electronic scale, 13 is a frequency converter, 14 is a glass tube level gauge, 15 is a vehicle body, 16 is a push handle, 17 is an upper cover, 18 is a control panel cover, 19 is a keyboard bracket, 20 is a side cover, 21 is a universal wheel, and 22 is a foot cup. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] See also Figures 1 to 3The mobile oil pump pressure test device of the present invention includes a movable vehicle body 15 and an oil tank, a booster pump, a driving motor, a pressure test manifold 6, a high-pressure hose, an air source and a weighing device arranged on the vehicle body 15. The driving motor is connected to the booster pump and is used to drive the booster pump to operate. The inlet of the booster pump is connected to the oil tank, the outlet of the booster pump is connected to the inlet of the pressure test manifold 6, the outlet of the pressure test manifold 6 is connected to one end of the high-pressure hose, and the other end of the high-pressure hose can be connected to the inlet of the oil pump. The control valve on the pressure test manifold 6 adopts an air-controlled valve, which is connected to the air source, and the air source provides power for opening and closing the air-controlled valve.

[0029] The use process of the mobile oil well pump pressure testing device of the present invention is as follows:

[0030] Move the vehicle body 15 to the pressure test position and fix the vehicle body 15;

[0031] Connect the high-pressure hose to the inlet of the oil pump;

[0032] Start the driving motor to make the booster pump pressurize the test oil in the oil tank and then deliver it to the oil pump through the pressure test manifold 6 and the high-pressure hose. When the oil pressure at the inlet of the oil pump is stable, perform a sealing test on the oil pump. During the sealing test, the output oil circuit of the booster pump is cut off by the control valve on the pressure test manifold 6, and the pressure of the test oil at the inlet of the oil pump is maintained. At the same time, the pressure gauge on the pressure test manifold 6 is used to measure and record the pressure of the pressure-maintaining oil.

[0033] After the sealing test of the oil well pump is completed, the leakage of the oil well pump is measured, and the leaked test pressure oil is collected by a container. After the collection time is preset, the collected leaked test pressure oil is measured and recorded by a weighing device.

[0034] As a preferred embodiment of the present invention, the oil tank includes a main oil tank 1 and an auxiliary oil tank 2. The main oil tank 1 and the auxiliary oil tank 2 are both horizontal structures. The main oil tank 1 and the auxiliary oil tank 2 are connected. The bottoms of the main oil tank 1 and the auxiliary oil tank 2 are both provided with oil drain holes, and the inlet of the booster pump is connected to the main oil tank 1. When refueling, the oil is added from the auxiliary oil tank 2, and enters the main oil tank 1 after cooling and filtering. By setting the auxiliary oil tank 2, it can ensure that the oil in the main oil tank 1 is relatively clean, and prevent the impurities in the oil from affecting the experimental results.

[0035] As a preferred embodiment of the present invention, a glass tube liquid level gauge 14 is provided on the main oil tank 1. Through the glass tube liquid level gauge 14, on the one hand, the liquid level in the main oil tank 1 can be observed, and the pressure test oil can be replenished in time when the main oil tank 1 is short of oil. On the other hand, the temperature of the pressure test oil in the main oil tank 1 can also be observed in time to ensure that the temperature of the pressure test oil is within the normal temperature range during the experiment.

[0036] As a preferred embodiment of the present invention, the booster pump adopts a plunger pump 3, and the driving motor adopts a variable frequency motor. The plunger pump 3 has a simple structure, which can not only meet the needs of the experiment, but also reduce the cost of the entire pressure test device. The driving motor adopts a variable frequency motor to enable the plunger pump 3 to output the required pressure test oil of different pressures.

[0037] As a preferred embodiment of the present invention, the high-pressure hose is wound on a high-pressure hose reel 8, and the high-pressure hose reel 8 has an automatic winding device, and the high-pressure hose reel 8 is arranged on the vehicle body 15. The high-pressure hose reel 8 facilitates the storage of the high-pressure hose, making the structure of the entire pressure test device more compact. The high-pressure hose reel 8 has an automatic winding device, which makes it easy to timely retract the pulled-out high-pressure hose, and facilitates operation.

[0038] As a preferred embodiment of the present invention, the end of the high-pressure hose is provided with a quick sealing joint that can be connected to the inlet of the oil pump. The quick sealing joint can achieve a quick and reliable connection between the high-pressure hose and the inlet of the oil pump, thereby improving the experimental efficiency.

[0039] As a preferred embodiment of the present invention, the air source is an air compressor 4, which is easy to carry and can be driven by electricity and can provide an air source with a stable pressure.

[0040] As a preferred embodiment of the present invention, the weighing device includes a high-range electronic scale 10 and a low-range electronic scale 11. By setting two electronic scales with different ranges, the measurement requirements for high leakage and low leakage can be met, and the applicability is better.

[0041] As a preferred embodiment of the present invention, in order to realize automatic control, the mobile oil pump pressure test device of the present invention is also provided with an industrial computer, and the drive motor, the opening and closing of the control valve on the pressure test manifold 6 and the weighing device are all connected to the industrial computer; the industrial computer is used to: control the rotation of the drive motor, control the action of the control valve and receive the weighing result data of the weighing device. In addition, the pressure gauge on the pressure test manifold 6 can also be connected to the industrial computer, and the industrial computer can obtain the pressure information of the pressure gauge in real time.

[0042] Example

[0043] like Figures 1 to 3 The mobile oil pump pressure test device of this embodiment is mainly composed of a main oil tank 1, an auxiliary oil tank 2, a plunger pump 3, an air compressor 4, an air control valve 5, a pressure test manifold 6, a power cord reel 7, a high-pressure hose reel 8, a touch-type industrial computer 9, a high-range electronic scale 10, a low-range electronic scale 11 and a frequency converter 13, and the above devices are all arranged in a movable vehicle body 15.

[0044] The main oil tank 1 and the auxiliary oil tank 2 are both horizontal structures and are connected to each other. When refueling, oil is added from the auxiliary oil tank 2 and enters the main oil tank 1 after cooling and filtering. Oil drain holes are provided at the bottom of the main oil tank 1 and the auxiliary oil tank 2. A glass tube liquid level gauge 14 is provided on one side of the main oil tank 1.

[0045] The plunger pump 3 is driven by an electric motor, which adopts a variable frequency motor. The frequency converter 13 of the variable frequency motor can adjust the speed of the motor, and then adjust the oil pressure output by the plunger pump 3. The plunger pump 3 pressurizes the test oil from the main oil tank 1, and then transports it to the oil pump workpiece to be pressure tested through the pressure test manifold 6 and the high-pressure hose.

[0046] The pressure test manifold 6 includes a stainless steel pipe with ferrule joints at both ends. The stainless steel pipe is provided with an air-controlled valve, which includes a pressure-maintaining air-controlled stop valve, a pressure-relieving air-controlled valve and a manual pressure relief valve, wherein the air-controlled valve is actuated by the control air provided by the air compressor 4.

[0047] A power cord is wound around the power cord reel 7, and the power cord can supply power to devices such as the air compressor 4, the air control valve 5, the touch-type industrial computer 9, the high-range electronic scale 10, the low-range electronic scale 11, the printer 12, the motor and the frequency converter 13. The power cord reel 7 and the high-pressure hose reel 8 both have automatic winding devices; a high-pressure hose is wound around the high-pressure hose reel 8, and a quick sealing joint is provided at one end of the high-pressure hose, which can be connected to the test pressure oil inlet of the oil pump to be tested, and the other end of the high-pressure hose is connected to the outlet of the test pressure manifold 6.

[0048] The touch-type industrial computer 9 integrates a PLC control system for automatic control of the pressure test operation. The main functions include: First, the monitoring function: it can control the variable frequency motor to realize the start and stop of the plunger pump 3, control the opening and closing of the air control valve 5, and can control the variable frequency motor and the air control valve to automatically perform pressure boosting, pressure stabilization and pressure relief operations according to the preset pressure test curve. Second, the metering function: the leakage value of the oil pump is weighed by a high-range electronic scale 10 or a low-range electronic scale 11 according to the range selection, so as to improve the metering accuracy, and the metering data is directly imported into the touch-type industrial computer 9. Third, the danger alarm: through the measurement value of the pressure gauge on the pressure test manifold 6, it is judged whether there is a dangerous condition of overpressure, overload, and leakage. If so, an alarm is issued and the variable frequency motor is automatically stopped to drive the plunger pump 3 to operate, which plays a protective function.

[0049] The four corners at the bottom of the body 15 are respectively provided with a universal wheel 21 with a brake, and each corner is also provided with a liftable foot cup 22. The upper part of the body 15 is also provided with a push handle 16, an upper cover 17, a control panel shield 18, a keyboard bracket 19, and a side cover 20 to protect the equipment installed on the body 15.

[0050] When the mobile oil pump pressure testing device of this embodiment is actually used, the vehicle body 15 is pushed to the location where the pressure testing is required, the four universal wheels 21 are locked by brakes, and the four foot cups 22 are lowered for support and fixation.

[0051] Then pull out the power cord on the power cord reel 7, and connect the plug at one end of the power cord to the power socket; pull out the high-pressure hose on the high-pressure hose reel 8, and connect the quick sealing connector at one end of the high-pressure hose to the oil pump workpiece to be tested.

[0052] When in use, the mobile oil pump pressure test device is powered on, the touch-type industrial computer 9 is powered on, the existing test software is opened, and the parameters of the sealing performance test and the leakage test are set in sequence.

[0053] Test, start the test program on the test software interface, and complete the sealing performance test and leakage test in sequence; the program automatically increases, stabilizes, and releases pressure according to the set pressure test parameters to form a real-time pressure test curve, realize automatic result judgment and data storage.

[0054] After finishing, pull out the quick sealing joint at one end of the high-pressure hose, and automatically roll up the high-pressure hose through the high-pressure hose reel 8; pull out the plug at one end of the power cord, and automatically roll up the power cord through the power cord reel 7; raise the four foot cups 22; open the brakes of the four universal wheels 21, and push the mobile oil pump pressure test device to the designated storage location.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mobile oil well pump pressure testing device, characterized in that: The invention comprises a movable vehicle body (15) and an oil tank, a booster pump, a driving motor, a pressure test manifold (6), a high-pressure hose, an air source and a weighing device arranged on the vehicle body (15); the driving motor is connected to the booster pump and is used to drive the booster pump to operate; the inlet of the booster pump is connected to the oil tank; the outlet of the booster pump is connected to the inlet of the pressure test manifold (6); the outlet of the pressure test manifold (6) is connected to one end of the high-pressure hose; the other end of the high-pressure hose can be connected to the inlet of the oil pump; the control valve on the pressure test manifold (6) is an air-controlled valve; and the air-controlled valve is connected to the air source.

2. A mobile oil well pump pressure testing device according to claim 1, characterized in that: The oil tank comprises a main oil tank (1) and an auxiliary oil tank (2), the main oil tank (1) and the auxiliary oil tank (2) both adopt a horizontal structure, the main oil tank (1) and the auxiliary oil tank (2) are connected, the bottom of the main oil tank (1) and the auxiliary oil tank (2) are both provided with oil drain holes, and the inlet of the booster pump is connected to the main oil tank (1).

3. A mobile oil well pump pressure testing device according to claim 2, characterized in that: A glass tube liquid level gauge (14) is provided on the main oil tank (1).

4. The mobile oil well pump pressure testing device according to claim 1, characterized in that: The booster pump is a plunger pump (3), and the drive motor is a variable frequency motor.

5. The mobile oil well pump pressure testing device according to claim 1, characterized in that: The high-pressure hose is wound on a high-pressure hose reel (8), the high-pressure hose reel (8) has an automatic wire-winding device, and the high-pressure hose reel (8) is arranged on the vehicle body (15).

6. The mobile oil well pump pressure testing device according to claim 1, characterized in that: The end of the high-pressure hose is provided with a quick sealing joint which can be connected to the inlet of the oil pump.

7. The mobile oil well pump pressure testing device according to claim 1, characterized in that: The air source is an air compressor (4).

8. The mobile oil well pump pressure testing device according to claim 1, characterized in that: The weighing device comprises a high-range electronic scale (10) and a low-range electronic scale (11).

9. The mobile oil well pump pressure testing device according to claim 1, characterized in that: It also includes an industrial computer, and the drive motor, the opening and closing of the control valve on the pressure test manifold (6) and the weighing device are all connected to the industrial computer; The industrial computer is used to control the rotation of the drive motor, control the action of the control valve and receive the weighing result data of the weighing device.

10. A mobile oil well pump pressure testing method, characterized in that: The method is carried out using the mobile oil well pump pressure testing device according to any one of claims 1 to 9, and comprises the following process: Moving the vehicle body (15) to a pressure test position and fixing the vehicle body (15); Connect the high-pressure hose to the inlet of the oil pump; The driving motor is started, so that the booster pump pressurizes the test oil in the oil tank and delivers it to the oil pump through the pressure test manifold (6) and the high-pressure hose. When the oil pressure at the inlet of the oil pump is stable, a sealing test is performed on the oil pump. During the sealing test, the output oil circuit of the booster pump is cut off by the control valve on the pressure test manifold (6), and the pressure of the test oil at the inlet of the oil pump is maintained. At the same time, the pressure gauge on the pressure test manifold (6) is used to measure and record the pressure of the pressure-maintaining oil. After the sealing test of the oil well pump is completed, the leakage of the oil well pump is measured, and the leaked test pressure oil is collected by a container. After the collection time is preset, the collected leaked test pressure oil is measured and recorded by a weighing device.

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