Counter weight type hydraulic torsional vibrator in vibroseis

Abstract

The invention relates to the technical field of hydraulic fluid pressure execution equipment, in particular to a heavy hammer type hydraulic torsional vibrator in a vibroseis. Comprising a shell, and a working cavity is formed in the shell; the heavy hammer is rotationally connected with the shell; the first pressure assembly is fixed on the inner side wall of the shell; the second pressure assembly is fixed on the outer side wall of the heavy hammer; the multiple first pressure assemblies and the multiple second pressure assemblies are arranged at intervals in the circumferential direction of the working cavity; every two adjacent first pressure assemblies form a pressure cavity, and the second pressure assembly located in the pressure cavity divides the pressure cavity into a first pressure part and a second pressure part; one end of the pressure assembly communicates with the first pressure part, the other end of the pressure assembly communicates with the second pressure part, and the pressure assembly provides pressure media for the first pressure part and the second pressure part. The torque generated by the vibrator can be increased by increasing the distance between the piston cavity and the rotating center, and therefore the excitation energy level of the torsional vibrator is increased by increasing the torque.

Description

Technical Field

[0001] This application relates to the field of hydraulic fluid pressure actuators, and in particular to a controllable vibration source internal weight type hydraulic torsional vibrator. Background Technology

[0002] In the field of oil and gas exploration, the types of artificial seismic waves used are divided into three categories: shear waves, p-waves, and torsional waves. Among them, the rotational component of torsional waves can effectively supplement the integrity of the seismic wave field, making wave field separation more accurate. By combining translational and rotational components, different types of seismic waves (such as P-waves, S-waves, etc.) can be more reliably identified and separated, thereby improving the accuracy of seismic data interpretation.

[0003] Therefore, torsional waves are also a type of seismic wave well-suited for use in oil and gas exploration. Traditional torsional wave vibrators have a weight mounted on the outside of a piston rod. During operation, the weight vibrates around the piston rod under hydraulic pressure, and the resulting reaction force acts on the ground through the piston rod and the plate, thus exciting torsional waves. The magnitude of the torsional wave excitation energy level is measured by the torque exerted on the ground by the plate. In traditional torsional wave vibrators, the hydraulic chamber is located at the midpoint of the contact between the weight and the piston rod, and the generated torque is equal to the hydraulic pressure multiplied by the distance between the piston chamber and the center of rotation, i.e., the center of the piston rod.

[0004] Regarding the aforementioned technologies, since the piston chamber is located at the center of the counterweight, the distance between the piston chamber and the center of rotation is small, resulting in a smaller torque under the same hydraulic pressure. Summary of the Invention

[0005] Based on this, it is necessary to provide a controllable source internal hammer type hydraulic torsional vibrator that can increase the distance between the piston chamber and the rotation center to increase the torque generated by the vibrator, thereby increasing the torque to improve the excitation energy level of the torsional vibrator.

[0006] To solve the above-mentioned technical problems, this application provides the following technical solution: A controllable vibration source internal counterweight type hydraulic torsional vibrator includes: A housing, wherein a working cavity is provided inside the housing; A counterweight is located inside the working chamber and is rotatably connected to the housing. A first pressure assembly is fixed to the inner wall of the housing; a second pressure assembly is fixed to the outer wall of the counterweight; a plurality of the first pressure assemblies and a plurality of the second pressure assemblies are arranged at circumferential intervals along the working chamber; Two adjacent first pressure components form a pressure chamber, and a second pressure component located within the pressure chamber divides the pressure chamber into a first pressure section and a second pressure section. A pressure assembly, one end of which is connected to the first pressure section and the other end of which is connected to the second pressure section, wherein the pressure assembly provides a pressure medium to the first pressure section and the second pressure section respectively; When the pressure of the first pressure section is greater than the pressure of the second pressure section, the weight is rotated in the first direction; when the pressure of the first pressure section is less than the pressure of the second pressure section, the weight is rotated in the second direction.

[0007] It is understandable that the weight is rotatably connected inside the housing, and a first pressure component is provided on the housing, while a second pressure component is provided on the weight. Two adjacent first pressure components form a pressure chamber, which is divided into a first pressure section and a second pressure section by the second pressure component. The first pressure section and the second pressure section are connected through pressure components, allowing the pressure components to adjust the pressure inside the first pressure section and the second pressure section respectively. This causes the second pressure component to rotate towards the side with lower pressure under the influence of the pressure difference, thereby causing the weight to rotate inside the housing. The oil chamber that generates the force is on the outside of the weight, so the distance between the torsional force and the center of rotation is greater, resulting in a larger torque. This allows for the generation of a larger torque under the same hydraulic oil pressure, thereby exciting a torsional seismic wave with greater energy. This increases the distance between the piston chamber and the center of rotation, thereby increasing the torque generated by the vibrator and thus increasing the excitation energy level of the torsional vibrator.

[0008] In one embodiment, the system further includes a top cover fixed to the housing, a pressure assembly fixed to the top cover, and a pressure control channel formed on the side wall of the top cover and the first pressure assembly. One end of the pressure control channel is connected to the pressure assembly, and the other end of the pressure control channel is connected to the pressure chamber.

[0009] In one embodiment, the pressure control channel includes a first channel and a second channel, one end of the first channel is connected to the first pressure section, the other end of the first channel is connected to the pressure component, one end of the second channel is connected to the second pressure section, and the other end of the second channel is connected to the pressure component.

[0010] In one embodiment, the first flow channel includes a first main flow channel and a plurality of first branch flow channels. The first main flow channel is connected to the plurality of first branch flow channels respectively, and the ends of the plurality of first branch flow channels opposite to the first main flow channel are respectively configured to correspond one-to-one with the plurality of first pressure sections.

[0011] In one embodiment, the second flow channel includes a second main flow channel and a plurality of second branch flow channels. The second main flow channel is connected to the plurality of second branch flow channels respectively, and the ends of the plurality of second branch flow channels opposite to the second main flow channel are respectively provided in correspondence with the plurality of second pressure sections.

[0012] In one embodiment, the side wall of the top cover has a first limiting groove, and the side wall of the housing has a second limiting groove. The first limiting groove and the second limiting groove are coaxially arranged. The side wall of the counterweight is fixedly connected to a first rotating shaft relative to the first limiting groove. The first rotating shaft is located in the first limiting groove and is rotatably connected to the top cover. The side wall of the counterweight is fixedly connected to a second rotating shaft relative to the second limiting groove. The second rotating shaft is located in the second limiting groove and is rotatably connected to the housing.

[0013] In one embodiment, a seal is provided between the top cover and the housing, and the seal has a connecting hole relative to the pressure control channel.

[0014] In one embodiment, the housing further includes a plate fixed to the housing, the plate having a horizontal cross-sectional area larger than that of the housing.

[0015] In one embodiment, the side of the plate opposite to the housing is fixedly connected with a locking tooth.

[0016] In one embodiment, two first pressure components are arranged opposite each other, and the line connecting the two first pressure components is arranged radially along the housing; two second pressure components are arranged opposite each other, and the line connecting the two second pressure components is arranged radially along the counterweight.

[0017] Compared with existing technologies, a controllable source internal weight-type hydraulic torsional vibrator features a weight rotating inside a housing. A first pressure component is mounted on the housing, and a second pressure component is mounted on the weight. Two adjacent first pressure components form a pressure chamber, which is divided into a first pressure section and a second pressure section by the second pressure component. The first and second pressure sections are connected by pressure components, allowing the pressure components to adjust the pressure within each section. This causes the second pressure component to rotate towards the side with lower pressure under the influence of the pressure difference, thereby rotating the weight inside the housing. Since the oil chamber generating the force is outside the weight, the torsional force is farther from the rotation center, resulting in a larger torque. This allows for the generation of a larger torque under the same hydraulic oil pressure, thus exciting a torsional seismic wave with greater energy. Increasing the distance between the piston chamber and the rotation center increases the torque generated by the vibrator, thereby increasing the excitation energy level of the torsional vibrator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a controllable vibration source internal weight type hydraulic torsional vibrator provided in this application.

[0020] Figure 2 A cross-sectional view of a controllable vibration source internal weight type hydraulic torsional vibrator provided in this application.

[0021] Figure 3 The diagram shows the structure of the first and second pressure sections of a controllable vibration source internal hammer type hydraulic torsional vibrator provided in this application.

[0022] Figure 4 This application provides a schematic diagram of the pressure chamber of a controllable vibration source internal hammer-type hydraulic torsional vibrator.

[0023] Figure 5 This is a schematic diagram of the structure of the second protrusion of a controllable vibration source internal hammer type hydraulic torsional vibrator provided in this application.

[0024] Figure 6 This application provides a schematic diagram of the pressure control flow channel of a controllable vibration source internal hammer type hydraulic torsional vibrator.

[0025] The component labels are as follows: 1. Housing; 11. First pressure assembly; 111. First protrusion; 12. Flat plate; 13. Clamping tooth; 2. Top cover; 21. First limiting groove; 22. Second limiting groove; 23. Second pressure assembly; 231. Second protrusion; 24. Pressure assembly; 241. Servo manifold; 3. Working chamber; 4. Counterweight; 41. First rotating shaft; 42. Second rotating shaft; 5. Pressure chamber; 51. First pressure section; 52. Second pressure section; 6. Pressure control flow channel; 61. First flow channel; 611. First main flow channel; 612. First branch flow channel; 62. Second flow channel; 621. Second main flow channel; 622. Second branch flow channel. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0031] In the field of oil and gas exploration, the types of artificial seismic waves used are divided into three categories: shear waves, p-waves, and torsional waves. Among them, the rotational component of torsional waves can effectively supplement the integrity of the seismic wave field, making wave field separation more accurate. By combining translational and rotational components, different types of seismic waves (such as P-waves, S-waves, etc.) can be more reliably identified and separated, thereby improving the accuracy of seismic data interpretation.

[0032] Therefore, torsional waves are also a type of seismic wave well-suited for use in oil and gas exploration. Traditional torsional wave vibrators have a weight mounted on the outside of a piston rod. During operation, the weight vibrates around the piston rod under hydraulic pressure, and the resulting reaction force acts on the ground through the piston rod and the plate, thus exciting torsional waves. The magnitude of the torsional wave excitation energy level is measured by the torque exerted on the ground by the plate. In traditional torsional wave vibrators, the hydraulic chamber is located at the midpoint of the contact between the weight and the piston rod, and the generated torque is equal to the hydraulic pressure multiplied by the distance between the piston chamber and the center of rotation, i.e., the center of the piston rod.

[0033] Regarding the aforementioned technologies, since the piston chamber is located at the center of the counterweight, the distance between the piston chamber and the center of rotation is small, resulting in a smaller torque under the same hydraulic pressure.

[0034] Based on this, it is necessary to provide a controllable source internal hammer type hydraulic torsional vibrator that can increase the distance between the piston chamber and the rotation center to increase the torque generated by the vibrator, thereby increasing the torque to improve the excitation energy level of the torsional vibrator.

[0035] Please see Figures 1 to 6 This application provides a controllable vibration source internal weight type hydraulic torsional vibrator including a housing 1. In a specific embodiment, the housing 1 is a hollow cylindrical housing 1, and the top of the housing 1 is provided with an opening, so that the interior of the housing 1 can communicate with the outside through the top opening.

[0036] A top cover 2 is provided at the top opening of the housing 1, completely covering the top opening of the housing 1, thereby sealing the top of the internal opening of the housing 1, and forming a working cavity 3 through the housing 1 and the top cover 2. A sealing element is also provided between the housing 1 and the top cover 2. In a specific embodiment, the sealing element is a sealing ring, one end of the sealing ring abuts against the top cover 2, and the other end of the sealing ring abuts against the housing 1, thereby sealing the top cover 2 and the housing 1.

[0037] A counterweight 4 is disposed inside the housing 1. In this embodiment, the counterweight 4 is a cylindrical structure and is coaxially arranged with the housing 1. A first rotating shaft 41 is coaxially arranged at the top of the counterweight 4 and is fixedly connected to the counterweight 4. A second rotating shaft 42 is coaxially arranged at the bottom of the counterweight 4 and is fixedly connected to the counterweight 4. A first limiting groove 21 is formed on the upper cover 2 at a position relative to the first rotating shaft 41. The first rotating shaft 41 is located in the first limiting groove 21 and is rotatably connected to the upper cover 2. A second limiting groove 22 is formed on the inner bottom wall of the housing 1 at a position relative to the second rotating shaft 42. The second rotating shaft 42 is located in the second limiting groove 22 and is rotatably connected to the housing 1. Thus, the first rotating shaft 41 and the second rotating shaft 42 limit the counterweight 4 to rotate within the housing 1.

[0038] Reference Figure 3 , Figure 4 In some embodiments, the outer diameter of the weight 4 is smaller than the inner diameter of the housing 1, forming a cavity between the outer wall of the weight 4 and the inner wall of the housing 1. By injecting hydraulic oil into the cavity, a pressure difference of different magnitudes is formed on both sides of the weight 4. Driven by the pressure difference, the weight 4 can be driven to rotate inside the housing 1, and the rotation direction is from the side with higher hydraulic pressure to the side with lower hydraulic pressure. Thus, the weight 4 rotates inside the housing 1, providing a directional torsional force to the housing 1.

[0039] To facilitate the rotation of the counterweight 4 by hydraulic pressure oil inside the housing 1, a first pressure assembly 11 is provided on the inner wall of the housing 1. The first pressure assembly 11 is fixedly connected to the housing 1, and multiple first pressure assemblies 11 are arranged along the circumference of the housing 1. A second pressure assembly 23 is fixedly connected to the outer wall of the counterweight 4. Multiple second pressure assemblies 23 are arranged along the circumference of the outer wall of the counterweight 4. The multiple first pressure assemblies 11 and the multiple second pressure assemblies 23 are arranged at intervals along the circumference of the working chamber 3, such that there is one second pressure assembly 23 between two adjacent first pressure assemblies 11. A pressure chamber 5 is formed between the outer walls of the two adjacent first pressure components 11, the top cover 2, and the counterweight 4 and the housing 1. The pressure chamber 5 is divided into a first pressure section 51 and a second pressure section 52 by the second pressure component 23 located inside the pressure chamber 5. The outer walls of the second pressure component 23 of the counterweight 4 abut against the inner walls of the housing 1, thereby forming a separation. The pressure medium located in the first pressure section 51 cannot enter the second pressure section 52 through the connection between the counterweight 4 and the housing 1.

[0040] In a specific embodiment, the first pressure component 11 is a first protrusion 111, which is arranged along the height direction of the housing 1 and is fixedly connected to the inner sidewall of the housing 1. Adjacent first protrusions 111 are spaced apart. The second pressure component 23 is a second protrusion 231, which is located on the outer sidewall of the counterweight 4 along the height direction. The first protrusion 111 and the second protrusion 231 are arranged parallel to each other and are arranged opposite to each other along the circumference of the pressure chamber 5. This allows the first protrusion 111 and the second protrusion 231 to be positioned relative to each other when the counterweight 4 rotates. Thus, the space between the first pressure part 51 and the second pressure part 52 can be adjusted during the rotation of the counterweight 4 inside the housing 1.

[0041] In order to control the pressure inside the first pressure section 51 and the second pressure section 52, when the pressure inside the first pressure section 51 is greater than the pressure inside the second pressure section 52, the weight 4 is driven to rotate in the first direction, and when the pressure inside the first pressure section 51 is less than the pressure inside the second pressure section 52, the weight 4 is driven to rotate in the second direction, wherein the first direction and the second direction are opposite, thereby controlling the rotation direction of the weight 4 inside the pressure chamber 5.

[0042] A pressure assembly 24 is provided on the top wall of the upper cover 2. In this embodiment, the pressure assembly 24 is a servo valve, which can provide hydraulic medium to the interior of the pressure chamber 5. A servo manifold 241 is provided between the servo valve and the upper cover 2. The servo manifold 241 is used to guide the flow of the pressure medium flowing into and out of the servo valve.

[0043] Reference Figure 5 , Figure 6 A pressure control channel 6 is provided inside the side wall of the upper cover 2 and the first pressure assembly 11. One end of the pressure control channel 6 is connected to the servo valve, and the other end is connected to the pressure chamber 5, thereby connecting the servo valve and the pressure chamber 5. To facilitate individual adjustment of the pressure inside the first pressure section 51 and the second pressure section 52, and thus control the pressure levels inside the first pressure section 51 and the second pressure section 52 respectively, the pressure control channel 6 includes a first channel 61 and a second channel 62. One end of the first channel 61 is connected to the servo valve, and the other end is connected to the first pressure section 51, allowing the servo valve to control the pressure medium inside the first pressure section 51 through the first channel 61. One end of the second channel 62 is connected to the servo valve, and the other end is connected to the second pressure section 52, allowing the servo valve to control the pressure medium inside the second pressure section 52 through the second channel 62.

[0044] Since multiple first pressure components 11, i.e. first protrusions 111, are arranged along the circumference of the pressure chamber 5, the first flow channel 61 includes a first main flow channel 611 and multiple first branch flow channels 612. The first main flow channel 611 and the first branch flow channels 612 are in relative communication. Each first pressure component 11 has a first branch flow channel 612 on its side wall, so that one end of the first branch flow channel 612 is in communication with the first main flow channel 611, and the other end of the first branch flow channel 612 is in communication with the interior of the first pressure part 51.

[0045] Since multiple second pressure components 23, i.e. second protrusions 231, are arranged along the circumference of the pressure chamber 5, the second flow channel 62 includes a second main flow channel 621 and multiple second branch flow channels 622. The second main flow channel 621 and the second branch flow channels 622 are in relative communication. Each second pressure component 23 has a second branch flow channel 622 on its side wall, so that one end of the second branch flow channel 622 is in communication with the second main flow channel 621, and the other end of the second branch flow channel 622 is in communication with the interior of the second pressure section 52.

[0046] To facilitate the flow of pressure medium, a connecting hole is provided on the side wall of the seal relative to the pressure control channel 6. The connecting hole connects the pressure medium inside the upper cover 2 with the pressure medium inside the housing 1.

[0047] Through the configured servo valve, first flow channel 61, and second flow channel 62, the servo valve injects pressure medium into the first pressure section 51 through the first flow channel 61 and discharges pressure medium located inside the second pressure section 52, making the pressure inside the first pressure section 51 greater than the pressure inside the second pressure section 52, thus pushing the counterweight 4 to rotate from one side of the first pressure section 51 towards one side of the second pressure section 52. When the servo valve injects pressure medium into the second pressure section 52 through the second flow channel 62 and discharges pressure medium located inside the first pressure section 51, making the pressure inside the first pressure section 51 less than the pressure inside the second pressure section 52, thus pushing the counterweight 4 to rotate from one side of the second pressure section 52 towards one side of the first pressure section 51.

[0048] A flat plate 12 is also fixedly connected to the bottom wall of the housing 1. The flat plate 12 is coaxially arranged with the housing 1, and the diameter of the flat plate 12 is larger than the diameter of the housing 1. A locking tooth 13 is fixedly connected to the side of the flat plate 12 away from the housing 1. Multiple locking teeth 13 are arranged on the flat plate 12, and the locking teeth 13 protrude from the flat plate 12 toward the side away from the housing 1. The locking teeth 13 can be inserted into the ground to fix the flat plate 12 and the housing 1.

[0049] The reaction force generated by the torsional motion of the hammer 4 acts on the ground through the shell 1, the plate 12, and the locking teeth 13, thereby exciting seismic waves that generate torsional vibrations on the ground surface. The oil chamber that generates the force is on the outside of the hammer 4, so the torsional force is farther away from the center of rotation, resulting in a larger torque. This allows for the generation of a larger torque under the same hydraulic oil pressure, thereby exciting torsional seismic waves with greater energy.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A hydraulic torsional vibrator of the weight-drop type inside a controlled source, characterized in that, Including: The housing (1) has a working cavity (3) inside it. The counterweight (4) is located inside the working chamber (3) and is rotatably connected to the housing (1); The first pressure assembly (11) is fixed to the inner wall of the housing (1); the second pressure assembly (23) is fixed to the outer wall of the counterweight (4); a plurality of the first pressure assemblies (11) and a plurality of the second pressure assemblies (23) are arranged at intervals along the circumference of the working chamber (3); Two adjacent first pressure components (11) form a pressure chamber (5), and a second pressure component (23) located in the pressure chamber (5) divides the pressure chamber (5) into a first pressure section (51) and a second pressure section (52). Pressure assembly (24), one end of which is connected to the first pressure section (51) and the other end of which is connected to the second pressure section (52), the pressure assembly (24) provides pressure medium to the first pressure section (51) and the second pressure section (52) respectively; When the pressure of the first pressure section (51) is greater than the pressure of the second pressure section (52), the weight (4) is rotated in the first direction; when the pressure of the first pressure section (51) is less than the pressure of the second pressure section (52), the weight (4) is rotated in the second direction.

2. A controlled source induction geophysical survey system comprising: a seismic energy source towed by a vessel; a survey spread comprising a plurality of receivers towed by the vessel; and a plurality of seismic energy sources towed by the vessel, wherein the plurality of seismic energy sources comprises the seismic energy source. It also includes an upper cover (2), which is fixed to the housing (1). The pressure assembly (24) is fixed to the upper cover (2). The upper cover (2) and the side wall of the first pressure assembly (11) are provided with a pressure control channel (6). One end of the pressure control channel (6) is connected to the pressure assembly (24), and the other end of the pressure control channel (6) is connected to the pressure chamber (5).

3. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 2, characterized in that, The pressure control channel (6) includes a first channel (61) and a second channel (62). One end of the first channel (61) is connected to the first pressure section (51), and the other end of the first channel (61) is connected to the pressure assembly (24). One end of the second channel (62) is connected to the second pressure section (52), and the other end of the second channel (62) is connected to the pressure assembly (24).

4. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 3, characterized in that, The first flow channel (61) includes a first main flow channel (611) and a plurality of first branch flow channels (612). The first main flow channel (611) is connected to the plurality of first branch flow channels (612) respectively. The ends of the plurality of first branch flow channels (612) opposite to the first main flow channel (611) are respectively corresponding to the plurality of first pressure parts (51).

5. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 3, characterized in that, The second flow channel (62) includes a second main flow channel (621) and a plurality of second branch flow channels (622). The second main flow channel (621) is connected to the plurality of second branch flow channels (622) respectively. The ends of the plurality of second branch flow channels (622) opposite to the second main flow channel (621) are respectively corresponding to the plurality of second pressure sections (52).

6. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 2, characterized in that, The side wall of the upper cover (2) is provided with a first limiting groove (21), and the side wall of the housing (1) is provided with a second limiting groove (22). The first limiting groove (21) and the second limiting groove (22) are coaxially arranged. The side wall of the weight (4) is fixedly connected to a first rotating shaft (41) relative to the first limiting groove (21). The first rotating shaft (41) is located in the first limiting groove (21) and is rotatably connected to the upper cover (2). The side wall of the weight (4) is fixedly connected to a second rotating shaft (42) relative to the second limiting groove (22). The second rotating shaft (42) is located in the second limiting groove (22) and is rotatably connected to the housing (1).

7. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 2, characterized in that, A sealing element is provided between the upper cover (2) and the housing (1), and the sealing element has a connecting hole relative to the pressure control channel (6).

8. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 1, characterized in that, The housing (1) also includes a plate (12), which is fixed to the housing (1), and the horizontal cross-sectional area of ​​the plate (12) is greater than the horizontal cross-sectional area of ​​the housing (1).

9. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 8, characterized in that, The plate (12) is fixedly connected to a locking tooth (13) on the side opposite to the shell (1).

10. The controllable vibration source internal counterweight type hydraulic torsional vibrator according to claim 1, characterized in that, Two first pressure components (11) are arranged opposite each other, and the line connecting the two first pressure components (11) is arranged radially along the housing (1); two second pressure components (23) are arranged opposite each other, and the line connecting the two second pressure components (23) is arranged radially along the weight (4).

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