Liquid-driven large-stroke high-output ultralow-frequency longitudinal wave vibroseis vibrator

Abstract

The utility model provides a hydraulic drive large stroke high output ultralow frequency longitudinal wave vibroseis vibrator, which comprises a hammer body moving assembly and a hammer body fixing assembly, and is characterized in that the hammer body moving assembly comprises a large mass hammer body, a large stroke cylinder sleeve, two copper sleeve assemblies, two end covers, a large stroke spring and a spring bracket; the hammer body fixing assembly comprises a hydraulic servo manifold, a large-stroke piston rod, a vibrator flat plate, a top frame assembly and a spring guide column. A hammer body through hole is formed in the center position in the large-mass hammer body, the large-stroke cylinder sleeve is fixed in the hammer body through hole through the copper sleeve assemblies and the end covers, the two copper sleeve assemblies are arranged at the two ends of the large-stroke cylinder sleeve, and the two end covers are clamped on the two copper sleeve assemblies respectively. The hydraulic drive large-stroke high-output ultralow-frequency longitudinal wave vibroseis vibrator provided by the utility model meets the requirements of high output and ultralow frequency, effectively improves the data quality of seismic source construction, improves the construction efficiency, and has a wide market prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, relates to a vibrator, and particularly relates to a liquid-driven large-stroke high-output ultra-low-frequency longitudinal wave vibrator for a vibrator source. Background Art

[0002] Artificially exciting seismic waves using a vibrator source is an important method for seismic exploration. The vibrator source has strong anti-interference ability. Since the signal spectrum and basic characteristics generated by the vibrator source can be artificially controlled, certain interference frequencies can be avoided when designing the source scanning signal, and the absorption effect of the formation seismic signal can also be compensated, which is difficult for other artificial surface vibrator sources and explosive vibrator sources to achieve. Therefore, using a vibrator source for seismic exploration can obtain data with reflection energy, signal-to-noise ratio, and signal resolution that can meet the needs of geological exploration. Currently, in the vibration frequency range where the output of each type of mainstream longitudinal wave vibrator source reaches the nominal vibration output of the vehicle type, it is generally 1.5 - 140 Hz. By adjusting the initial slope of the linear scanning controllable signal, the low frequency can reach 1.5 Hz, but the output during the stage from 1.5 Hz to the designed full drive frequency in the linear scanning cannot reach the nominal vibration output. However, in some special exploration applications, lower low-frequency signals and higher output are required, and a longitudinal wave vibrator for a vibrator source that meets high output and ultra-low frequency needs to be designed.

[0003] Therefore, this application proposes a liquid-driven large-stroke high-output ultra-low-frequency longitudinal wave vibrator for a vibrator source to solve the above problems. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem of realizing a longitudinal wave vibrator for a vibrator source with high output and ultra-low frequency. By adopting the design of a liquid-driven large-stroke high-output ultra-low-frequency longitudinal wave vibrator for a vibrator source, the longitudinal wave vibrator source can achieve ultra-low frequency and high output during construction.

[0005] The technical solution adopted by the present utility model is as follows: A liquid-driven large-stroke, high-output, ultra-low-frequency longitudinal wave controllable vibration source vibrator, which includes a hammer body movement component and a hammer body fixing component. The hammer body movement component includes a large-mass hammer body, a large-stroke cylinder liner, two copper sleeve components, two end covers, a large-stroke spring and a spring bracket; the hammer body fixing component includes a hydraulic servo manifold, a large-stroke piston rod, a vibrator flat plate, a top frame assembly and a spring guide post; a hammer body through hole is provided at the center position inside the large-mass hammer body, the large-stroke cylinder liner is fixed in the hammer body through hole by means of the copper sleeve components and the end covers, the two copper sleeve components are arranged at both ends of the large-stroke cylinder liner, the two end covers are respectively clamped on the two copper sleeve components, the lower end of the spring bracket is fixedly installed on the upper side of the large-mass hammer body, and the upper end of the large-stroke spring is fixedly connected to the upper end of the spring bracket; the hydraulic servo manifold is fixed at the upper end of the large-stroke piston rod, the vibrator flat plate and the top frame assembly are fixedly connected into an integral frame by means of the large-stroke piston rod and the spring guide post, the large-stroke spring is sleeved on the spring guide post, the bottom end of the spring guide post is fixed on the vibrator flat plate, and the large-mass hammer body is located above the center of the vibrator flat plate.

[0006] Further, there are 6 spring guide posts, and the number of large-stroke springs corresponds to the number of spring guide posts.

[0007] Further, the guide holes on the spring bracket are matched with the spring guide posts to realize the up-and-down guiding movement of the large-mass hammer body movement component.

[0008] Further, the top frame assembly is in a V-shaped structure.

[0009] The beneficial effects obtained by the present utility model are as follows: The present utility model adopts a liquid-driven large-stroke, high-output, ultra-low-frequency longitudinal wave controllable vibration source vibrator, which meets the requirements of high output and ultra-low frequency, effectively improves the data quality of seismic source construction, improves construction efficiency, and has a broad market prospect. Description of the Drawings

[0010] Figure 1 is an isometric perspective view of the present utility model;

[0011] Figure 2 is a front view of the present utility model;

[0012] Figure 3 is a side view of the present utility model;

[0013] Figure 4 is the Figure 3 A-A cross-sectional view of the present utility model;

[0014] Figure 5 is the Figure 2 B-B cross-sectional view of the present utility model;

[0015] Among them, 1 represents the vibrator plate, 2 represents the large mass hammer, 3 represents the spring bracket, 4 represents the spring guide column, 5 represents the top frame assembly, 6 represents the large stroke piston rod, 7 represents the large stroke spring, 8 represents the copper sleeve assembly, 9 represents the end cover, 10 represents the large stroke cylinder liner, and 11 represents the hydraulic servo manifold. Specific Embodiment

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0017] As Figures 1-5 shown, a liquid-driven large-stroke high-output ultra-low-frequency longitudinal wave controllable vibration source vibrator includes a hammer body movement component and a hammer body fixing component. The hammer body movement component includes a large mass hammer 2, a large stroke cylinder liner 10, two copper sleeve assemblies 8, two end covers 9, a large stroke spring 7, and a spring bracket 3; the hammer body fixing component includes a hydraulic servo manifold 11, a large stroke piston rod 6, a vibrator plate 1, a top frame assembly 5, and a spring guide column 4; a hammer body through hole is provided at the central position inside the large mass hammer 2, and the large stroke cylinder liner 10 is fixed in the hammer body through hole by means of the copper sleeve assembly 8 and the end cover 9. The two copper sleeve assemblies 8 are arranged at both ends of the large stroke cylinder liner 10, and the two end covers 9 are respectively clamped on the two copper sleeve assemblies 8. The lower end of the spring bracket 3 is fixedly installed on the upper side of the large mass hammer 2, and the upper end of the large stroke spring 7 is fixedly connected to the upper end of the spring bracket 3; the hydraulic servo manifold 11 is fixed to the upper end of the large stroke piston rod 6, and the vibrator plate 1 and the top frame assembly 5 are fixedly connected into an integral frame by means of the large stroke piston rod 6 and the spring guide column 4. The large stroke spring 7 is sleeved on the spring guide column 4, the bottom end of the spring guide column 4 is fixed on the vibrator plate 1, and the large mass hammer 2 is located above the center of the vibrator plate 1.

[0018] There are 6 spring guide columns 4, and the number of the large stroke springs 7 corresponds to the number of the spring guide columns 4. The guide holes on the spring bracket 3 are matched with the spring guide columns 4 to realize the up and down guiding movement of the auxiliary large mass hammer body movement component. The top frame assembly 5 is in a V-shaped structure.

[0019] During specific implementation: The hammer body movement component and the hammer body fixing component are guided by the large stroke piston rod 6 and the holes of the large stroke cylinder liner 10 and the copper sleeve assembly 8 to realize the up and down guiding function of the large mass hammer body movement component; two cavities are formed between the large stroke piston rod 6 and the large stroke cylinder liner 10. The upper cavity is defined as the hammer body piston rod upper cavity, and the lower cavity is defined as the hammer body piston rod lower cavity. The guide holes on the two spring brackets 3 are matched with the 6 spring guide columns 4 to realize the up and down guiding function of the auxiliary large mass hammer body movement component.

[0020] Six large-stroke springs 7 can achieve the balance between the spring force and the gravity of the large-mass hammer body movement component when the springs are in the middle position, and assist the large-mass hammer body movement component to return to the middle position during movement.

[0021] The top frame assembly 5 is integrally in a V-shaped structure, which is beneficial to shortening the length of the large-stroke piston rod 6 and reducing the processing difficulty of the large-stroke piston rod 6; this structure is also beneficial to installing the hydraulic servo manifold 11 inside to ensure the safety of the hydraulic servo manifold 11.

[0022] Description of the working process of the present utility model:

[0023] As Figure 5 shown, the high-pressure servo oil controlled by the hydraulic servo manifold 11 enters the upper chamber of the hammer piston rod through the C oil passage of the large-stroke piston rod 6 to drive the large-mass hammer body movement component to move upward; at this time, the lower chamber of the hammer piston rod is connected to the low-pressure part of the hydraulic servo manifold 11 to realize the oil return of the lower chamber. On the contrary, the high-pressure servo oil controlled by the hydraulic servo manifold 11 enters the lower chamber of the hammer piston rod through the D oil passage of the large-stroke piston rod 6 to drive the large-mass hammer body movement component to move downward; at this time, the upper chamber of the hammer piston rod is connected to the low-pressure part of the hydraulic servo manifold 11 to realize the oil return of the upper chamber.

[0024] By controlling the pressure of the incoming oil and switching the direction of the oil port by the hydraulic servo manifold 11, the reciprocating movement frequency and acceleration of the large-mass hammer body movement component are controlled. By using the large-stroke piston rod 6, the large-stroke cylinder liner 10, and the large-mass hammer 6, the purpose of ultra-low frequency and high output is achieved.

[0025] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A liquid-driven large-stroke high-output ultra-low-frequency longitudinal wave controllable vibration source vibrator, characterized in that: It includes a hammer body moving component and a hammer body fixing component. The hammer body moving component includes a large-mass hammer body (2), a large-stroke cylinder liner (10), two copper sleeve components (8), two end covers (9), a large-stroke spring (7) and a spring bracket (3); the hammer body fixing component includes a hydraulic servo manifold (11), a large-stroke piston rod (6), a vibrator flat plate (1), a top frame assembly (5) and a spring guide post (4); a hammer body through hole is provided at the central position inside the large-mass hammer body (2), and the large-stroke cylinder liner (10) is fixed in the hammer body through hole by means of the copper sleeve components (8) and the end covers (9). The two copper sleeve components (8) are arranged at both ends of the large-stroke cylinder liner (10), and the two end covers (9) are respectively clamped on the two copper sleeve components (8). The lower end of the spring bracket (3) is fixedly installed on the upper side of the large-mass hammer body (2), and the upper end of the large-stroke spring (7) is fixedly connected to the upper end of the spring bracket (3); the hydraulic servo manifold (11) is fixed at the upper end of the large-stroke piston rod (6), and the vibrator flat plate (1) and the top frame assembly (5) are fixedly connected as an integral frame by means of the large-stroke piston rod (6) and the spring guide post (4). The large-stroke spring (7) is sleeved on the spring guide post (4), the bottom end of the spring guide post (4) is fixed on the vibrator flat plate (1), and the large-mass hammer body (2) is located above the center of the vibrator flat plate (1).

2. The hydraulic-driven large-stroke high-output ultra-low-frequency longitudinal wave controllable vibration source vibrator according to claim 1, characterized in that: There are 6 spring guide posts (4), and the number of the large-stroke springs (7) corresponds to the number of the spring guide posts (4).

3. The hydraulic-driven large-stroke high-output ultra-low-frequency longitudinal wave controllable vibration source vibrator according to claim 1, characterized in that: The guide holes on the spring bracket (3) are matched with the spring guide posts (4) to realize the up-and-down guiding movement of the large-mass hammer body moving component.

4. The hydraulic-driven large-stroke high-output ultra-low-frequency longitudinal wave vibroseis vibrator according to claim 1, characterized in that: The top frame assembly (5) is in a V-shaped structure.

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