A controllable vibration source for a hybrid hydraulic system

Abstract

This invention discloses a controllable vibration source for a hybrid hydraulic system, belonging to the field of hydraulic vibration control technology. The controllable vibration source includes a fuel engine, a power distributor, a main hydraulic pump, a generator, a battery, an electric motor, an auxiliary hydraulic pump, a manifold, a vibrator, a frequency meter, and a control module. The fuel engine drives the main hydraulic pump and the generator via the power distributor. The main hydraulic pump supplies oil to the manifold. The generator charges the battery, and the battery powers the electric motor to drive the auxiliary hydraulic pump. The output of the auxiliary hydraulic pump is connected to the manifold. The frequency meter monitors the vibrator frequency and feeds it back to the control module. The control module adjusts the operating states of the electric motor and the auxiliary hydraulic pump according to the frequency signal. This invention stores energy in the battery during the vibrator's operating intervals. When the vibrator operates at low frequencies, the auxiliary hydraulic pump supplements the high-pressure hydraulic oil flow, meeting the vibrator's instantaneous high-flow-rate requirements, improving energy utilization efficiency, and reducing fuel consumption.

Description

Technical Field

[0001] This utility model relates to the field of geophysical exploration, and more specifically, to a controllable seismic source for a hybrid hydraulic system. Background Technology

[0002] Controlled seismic sources are currently the primary equipment for detecting oil and natural gas. Their working principle is as follows: a fuel engine drives a hydraulic pump to generate high-pressure, high-flow-rate hydraulic oil, which powers a vibrator. The vibrator strikes the ground, generating continuously varying seismic waves. Seismic detectors collect the reflected vibration signals from underground, analyze them to obtain cross-sectional images of the underground rock, and use these images to determine the potential presence of oil or natural gas.

[0003] To obtain better seismic wave acquisition data, the vibrator should generate sufficient vibration force in the low-frequency band. However, while maintaining a constant output force, the required hydraulic oil flow rate decreases rapidly with increasing frequency. Compared to the high-frequency band, the vibrator requires a larger flow rate of hydraulic oil from the hydraulic system in the low-frequency band. Figure 2 The curve shows the change in hydraulic oil flow rate versus frequency at low frequencies for a certain controllable vibration source, indicating that the hydraulic system requires a larger power input. To fully utilize the power of the internal combustion engine, existing controllable vibration sources employ hydraulic accumulators to address the insufficient low-frequency power supply, but the effect is limited. Therefore, existing controllable vibration sources all increase the power of the internal combustion engine.

[0004] In actual operation, the vibration frequency of the controllable seismic source continuously varies from approximately 1 to 250 Hz, with each operation lasting about 20 seconds. After completion, it needs to move to the next work location to begin work. Since the power required for the controllable seismic source to move is much less than the power required for the vibrator to operate, and the vibrator only requires high power input for a very short period in the low-frequency range of 1 to 10 Hz, increasing engine power to meet the demand for high power at low frequencies inevitably leads to reduced engine power utilization and energy waste. Utility Model Content

[0005] The purpose of this invention is to address the problems of insufficient low-frequency power supply and high energy loss in existing controllable vibration source hydraulic systems powered solely by a fuel engine. A hybrid hydraulic system for the controllable vibration source is proposed. An electrically driven hydraulic pump is added to the existing hydraulic system. When the vibrator is operating at low frequencies, it replenishes the existing hydraulic system with oil; when the vibrator is not operating, the fuel engine charges the electric drive system. This fully utilizes the power of the fuel engine, allowing a smaller engine to meet the high flow rate requirements of the vibrator during low-frequency operation.

[0006] The technical solution of this utility model is:

[0007] This invention provides a controllable vibration source for a hybrid hydraulic system. The hybrid hydraulic system includes a fuel engine, a power distributor, a main hydraulic pump, a generator, a battery, an electric motor, an auxiliary hydraulic pump and manifold, a vibrator, a frequency meter, and a control module. The output end of the fuel engine is connected to the input end of the power distributor. The two output ends of the power distributor are respectively connected to the main hydraulic pump and the generator. The output end of the main hydraulic pump is connected to one input end of the manifold. The generator is electrically connected to the battery, which supplies power to the electric motor. The electric motor drives the auxiliary hydraulic pump, whose output end is connected to the other input end of the manifold. The output end of the manifold is connected to the vibrator. The manifold distributes the high-pressure hydraulic oil generated by the main and auxiliary hydraulic pumps to the vibrator, which generates continuously changing vibration waves. The vibrator is connected to the frequency meter, which is connected to the control module. The control signal output end of the control module is connected to the control signal input end of the electric motor.

[0008] Furthermore, the manifold is a hydraulic oil distributor.

[0009] Furthermore, the characteristic feature is that the frequency threshold of the vibrator is 5Hz-15Hz.

[0010] Furthermore, the main hydraulic pump is connected to one input end of the manifold via a first hose, and the auxiliary hydraulic pump is connected to the other input end of the manifold via a second hose.

[0011] Furthermore, the output end of the manifold is connected to the vibrator via a third hose.

[0012] Furthermore, the battery is a lithium battery.

[0013] The beneficial effects of this utility model are:

[0014] This invention provides a large-capacity energy storage technology that stores energy during the working intervals of the vibrator and drives a hydraulic auxiliary pump to replenish the vibrator with high-pressure hydraulic oil flow when the vibrator is operating at low frequency, thereby meeting the needs of the vibrator.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0017] Figure 1A schematic diagram illustrating the working principle of a hybrid hydraulic system according to an embodiment of the present invention is shown.

[0018] Figure 2 This is a schematic diagram of the change curve of hydraulic oil flow rate versus frequency in the low-frequency range of a controllable vibration source in the background technology.

[0019] The components include: 1. fuel engine; 2. power distributor; 3. main hydraulic pump; 4. generator; 5. battery; 6. electric motor; 7. auxiliary hydraulic pump; 8. manifold; 9. vibrator; 10. frequency meter; and 11. control module. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0021] Figure 1 A schematic diagram illustrating the working principle of a hybrid hydraulic system according to an embodiment of the present invention is shown.

[0022] like Figure 1 As shown, a controllable vibration source for a hybrid hydraulic system is provided. The hybrid hydraulic system includes a fuel engine 1, a power distributor 2, a main hydraulic pump 3, a generator 4, a battery 5, an electric motor 6, an auxiliary hydraulic pump 7, a manifold 8, a vibrator 9, a frequency meter 10, and a control module 11.

[0023] The output end of the fuel engine 1 is connected to the input end of the power distributor 2; the two output ends of the power distributor 2 are respectively connected to the main hydraulic pump 3 and the generator 4; the main hydraulic pump 3 is connected to one input end of the manifold 8 through a first hose; the generator 4 is electrically connected to the battery 5, the battery 5 supplies power to the motor 6, the motor 6 drives the auxiliary hydraulic pump 7, the auxiliary hydraulic pump 7 is connected to the other input end of the manifold 8 through a second hose, the output end of the manifold 8 is connected to the vibrator 9 through a third hose, the vibrator 9 is connected to the frequency meter 10, the frequency meter 10 is connected to the control module 11, and the control module 11 is connected to the motor 6.

[0024] The power generated by the fuel engine 1 is transmitted to the main hydraulic pump 3 and the generator 3 via the power distributor 2; the main hydraulic pump 3 generates high-pressure hydraulic oil and transmits it to the manifold 8; the generator 4 generates electricity and stores the electrical energy in the battery 5, which in turn supplies power to the electric motor 6; the electric motor 6 drives the auxiliary hydraulic pump 7 to generate high-pressure hydraulic oil and transmits it to the manifold 8; the manifold 8 distributes the high-pressure hydraulic oil generated by the main hydraulic pump 3 and the auxiliary hydraulic pump 7 to the vibrator 9; the vibrator 9 generates continuously changing vibration waves; the frequency of the vibrator 9 is collected by the frequency meter 10; the frequency meter 10 transmits the signal to the control module 11; and the control module 11 transmits control commands to the electric motor 6 to control the start and stop of the electric motor 6.

[0025] In this utility model, the manifold 8 is a hydraulic oil distributor.

[0026] In this embodiment, when the vibrator is not working, the surplus power of the engine is used to charge the battery. When the vibrator is working at low frequency, the electrical energy stored in the battery drives the auxiliary hydraulic pump to supplement the flow of the vibrator, so as to meet the power required for low-frequency vibration and achieve the effects of energy saving and environmental protection.

[0027] The implementation process of this utility model is as follows:

[0028] During the journey of the controllable vibration source to the work site, since the required power for movement is relatively small, the surplus power of the fuel engine 1 charges the battery 5 through the power distributor 2 and the generator 4. When the controllable vibration source stops at the work site, the weight of the vibrator 9 falls and makes firm contact with the ground. The main hydraulic pump 3 starts working, and the control module 11 detects through the frequency meter 10 that the operating frequency of the vibrator 9 is zero, lower than the frequency set value, and issues a command to start the motor 6 and the auxiliary hydraulic pump 7. At this time, the high-pressure hydraulic oil generated by the main hydraulic pump 3 and the auxiliary hydraulic pump 7 is collected through the manifold 8 and supplied to the vibrator 9. The control system of the controllable vibration source commands the vibrator 9 to start working. The vibrator 9 begins to generate vibration waves that continuously vary from 1Hz to 250Hz.

[0029] When the operating frequency of the vibrator 9 exceeds the frequency setting value of 10Hz (adjustable according to the working conditions), the control module 11 commands the motor 6 to stop and the auxiliary hydraulic pump 7 to stop running. At this time, only the high-pressure hydraulic oil generated by the main hydraulic pump 3 is transmitted to the vibrator 9 through the manifold 8 to maintain the working state.

[0030] The vibrator operates for approximately 20 seconds, after which it needs to move to the next work location. During this movement, the fuel engine 1 continues to charge the battery via the power distributor 2 and the generator 3 to meet the power requirements of the next work cycle.

[0031] This invention utilizes energy storage technology to fully leverage the power of a fuel engine, enabling the controllable vibration source to meet the requirements of a large flow of hydraulic oil for low-frequency operation of the vibrator, even with a relatively small engine, thus significantly reducing the manufacturing cost of the controllable vibration source. Simultaneously, the reduced displacement of the fuel engine decreases environmental pollution.

[0032] 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.

Claims

1. A controllable vibration source for a hybrid hydraulic system, characterized in that, The hybrid hydraulic system includes a fuel engine (1), a power distributor (2), a main hydraulic pump (3), a generator (4), a battery (5), an electric motor (6), an auxiliary hydraulic pump (7), a manifold (8), a vibrator (9), a frequency meter (10), and a control module (11); the output end of the fuel engine (1) is connected to the input end of the power distributor (2); the two output ends of the power distributor (2) are respectively connected to the main hydraulic pump (3) and the generator (4); the output end of the main hydraulic pump (3) is connected to the manifold (8). 8) One input terminal is connected; the generator (4) is electrically connected to the battery (5), the battery (5) supplies power to the motor (6), the motor (6) drives the auxiliary hydraulic pump (7), the output terminal of the auxiliary hydraulic pump (7) is connected to the other input terminal of the manifold (8), the output terminal of the manifold (8) is connected to the vibrator (9), the manifold (8) distributes the high-pressure hydraulic oil generated by the main hydraulic pump (3) and the auxiliary hydraulic pump (7) to the vibrator (9), and the vibrator (9) generates continuously changing vibration waves. The vibrator (9) is connected to the frequency meter (10), the frequency meter (10) is connected to the control module (11), and the control signal output terminal of the control module (11) is connected to the control signal input terminal of the motor (6).

2. The controllable vibration source of the hybrid hydraulic system as described in claim 1, characterized in that, The manifold (8) is a hydraulic oil distributor.

3. The controllable vibration source of the hybrid hydraulic system as described in claim 1, characterized in that... The frequency threshold of the vibrator (9) is 5HZ-15HZ.

4. The controllable vibration source of the hybrid hydraulic system as described in claim 1, characterized in that... The main hydraulic pump (3) is connected to one input end of the manifold (8) via a first hose, and the auxiliary hydraulic pump (7) is connected to the other input end of the manifold (8) via a second hose.

5. The controllable vibration source of the hybrid hydraulic system as described in claim 4, characterized in that... The output end of the manifold (8) is connected to the vibrator (9) via a third hose.

6. The controllable vibration source of the hybrid hydraulic system as described in claim 1, characterized in that... The storage battery (5) is a lithium battery.

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