Underwater excitation fixing device for gas explosion seismic source

Abstract

The invention relates to the technical field of geophysical exploration equipment, in particular to an underwater excitation fixing device for a gas explosion seismic source. Comprising a base; the fixed shell is arranged on the base, and the mass of the base is larger than that of the fixed shell; the supporting assembly is located on the side, away from the fixed shell, of the base so as to be connected with the outside; and the limiting assembly is located on the side wall of the fixed shell, and one end of the limiting assembly is located in the fixed shell and used for limiting equipment in the fixed shell. The problem that when the gas explosion seismic source is applied in water, the gas explosion cavity cannot be kept vertical and stable at the water bottom, so that energy directional vertical excitation cannot be guaranteed can be solved.

Description

Technical Field

[0001] This application relates to the field of geophysical exploration equipment technology, and in particular to an underwater excitation and fixing device for a gas explosion source. Background Technology

[0002] A gas explosion source is the energy generated by the explosion of combustible gas, which impacts the ground and creates seismic waves. The combustible gas is filled in a cylindrical gas explosion chamber with directional blasting grooves carved at the bottom. After the combustible gas is detonated, the explosive energy first rushes out from the bottom of the chamber, creating a directional excitation. During onshore construction, the chamber can be placed in a pre-drilled well for excitation. The well walls constrain the chamber, keeping it vertical and ensuring that the energy released from the bottom impacts the ground vertically.

[0003] Regarding the aforementioned technologies, the application of gas explosion seismic sources in water seismic exploration results in poor stability of the device itself due to the impact between the source and the water flow. The device is prone to tilting or displacement due to soft underwater geology or water flow disturbance, affecting the directionality of the explosion energy. Consequently, the direction of shell breaking after the explosion is uncontrollable, and the energy tends to diffuse in all directions, making it difficult to concentrate the impact on the underwater strata and reducing the exploration resolution. Summary of the Invention

[0004] Therefore, it is necessary to provide an underwater excitation and fixing device for a gas explosion source that can solve the problem that the gas explosion cavity cannot remain vertically stable at the bottom of the water when the gas explosion source is used in water, thus making it impossible to guarantee the directional vertical excitation of energy.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution: An underwater excitation and fixing device for a gas explosion vibration source includes: Base; A fixed housing is disposed on the base, wherein the mass of the base is greater than the mass of the fixed housing; A support assembly is located on the side of the base opposite to the fixed housing, for connection to the outside; A limiting component is located on the side wall of the fixed housing, with one end of the limiting component located inside the fixed housing, for limiting the device inside the fixed housing.

[0006] Understandably, by supporting the bottom wall of the base plate with supporting components, the base plate can be stably fixed to the bottom of the water. The air explosion source is placed inside the fixed shell, and the air explosion source inside the fixed shell is limited by the limiting components, which restricts the displacement of the air explosion source. This allows the explosion of the air explosion source to be generated in a directional manner. Furthermore, since the mass of the base is greater than the mass of the fixed shell, the center of gravity of the entire device shifts to one side of the base, thereby improving the stability of the entire device. This can solve the problem that when the air explosion source is used in water, the air explosion chamber cannot maintain vertical stability at the bottom of the water, thus failing to guarantee the directional vertical excitation of energy.

[0007] In one embodiment, the fixed housing is open at one end near the base, and the base has a through hole relative to the opening, the through hole communicating with the opening.

[0008] In one embodiment, the base has a water-permeable hole that penetrates the side wall of the base.

[0009] In one embodiment, the limiting component includes a first limiting component and a second limiting component, a plurality of first limiting components are arranged along the circumference of the fixed housing, the first limiting components are located on the side of the second limiting component closer to the base, and the second limiting components are arranged along the circumference of the fixed housing.

[0010] In one embodiment, the second limiting component includes a second support column, which is threadedly connected to the fixed housing. The end of the second support column extends into the fixed housing, and the second support column is inclined from the center of the fixed housing toward the side wall of the fixed housing toward the side away from the base.

[0011] In one embodiment, the side wall of the fixed housing is provided with a second threaded hole, which is threadedly engaged with the second support column, and multiple threaded holes are provided along the axial direction of the fixed housing.

[0012] In one embodiment, the second limiting component includes a support ring located inside the fixed housing, and the support ring is coaxially arranged with the fixed housing.

[0013] In one embodiment, the first limiting component includes a first support post, which is threadedly connected to the fixed housing, and the end of the first support post extends into the fixed housing.

[0014] In one embodiment, the support assembly includes a toothed claw fixed to the base and extending toward a side away from the base.

[0015] In one embodiment, the fixed housing has a through hole at one end away from the base, and the through hole communicates with the interior of the fixed housing.

[0016] Compared with existing technologies, an underwater excitation and fixing device for a gas explosion source supports the bottom wall of a base plate with a support component, allowing the base plate to be stably fixed on the seabed. The gas explosion source is placed inside the fixed shell, and the gas explosion source inside the fixed shell is limited by a limiting component, restricting the displacement of the gas explosion source. This allows the explosion of the gas explosion source to be generated in a directional manner. Furthermore, since the mass of the base is greater than the mass of the fixed shell, the center of gravity of the entire device shifts to one side of the base, thereby improving the stability of the entire device. This solves the problem that when the gas explosion source is used in water, the gas explosion cavity cannot maintain vertical stability on the seabed, thus failing to guarantee the directional vertical excitation of energy. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of an underwater excitation and fixing device for a gas explosion source provided in this application.

[0019] Figure 2 This is a cross-sectional view of an underwater excitation and fixing device for a gas explosion source provided in this application.

[0020] The component labels are as follows: 1. Base; 11. Perforation; 12. Water-permeable hole; 2. Fixed housing; 21. First threaded hole; 22. Second threaded hole; 23. Through hole; 24. Handle; 3. Support assembly; 31. Toothed claw; 311. Connecting part; 312. Support part; 4. Limiting assembly; 41. First limiting component; 411. First support column; 42. Second limiting component; 421. Second support column. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] A gas explosion source is the energy generated by the explosion of combustible gas, which impacts the ground and creates seismic waves. The combustible gas is filled in a cylindrical gas explosion chamber with directional blasting grooves carved at the bottom. After the combustible gas is detonated, the explosive energy first rushes out from the bottom of the chamber, creating a directional excitation. During onshore construction, the chamber can be placed in a pre-drilled well for excitation. The well walls constrain the chamber, keeping it vertical and ensuring that the energy released from the bottom impacts the ground vertically.

[0027] Regarding the aforementioned technologies, the application of gas explosion seismic sources in water seismic exploration results in poor stability of the device itself due to the impact between the source and the water flow. The device is prone to tilting or displacement due to soft underwater geology or water flow disturbance, affecting the directionality of the explosion energy. Consequently, the direction of shell breaking after the explosion is uncontrollable, and the energy tends to diffuse in all directions, making it difficult to concentrate the impact on the underwater strata and reducing the exploration resolution.

[0028] Therefore, it is necessary to provide an underwater excitation and fixing device for a gas explosion source that can solve the problem that the gas explosion cavity cannot remain vertically stable at the bottom of the water when the gas explosion source is used in water, thus making it impossible to guarantee the directional vertical excitation of energy.

[0029] Please see Figures 1 to 2 This application provides an underwater excitation and fixing device for a gas explosion source, comprising a base 1, a fixing housing 2 disposed above the base 1, the fixing housing 2 being fixedly connected to the base 1, and an internal cavity for accommodating the gas explosion source. A through hole 11 is formed on the side wall of the base 1 at a position relative to the cavity, allowing the lower part of the base 1 to communicate with the interior of the cavity of the fixing housing 2 through the through hole 11. An external gas explosion source can be placed inside the cavity through the through hole 11, allowing the gas explosion source to be positioned and fixed by the fixing housing 2.

[0030] A support component 3 is also provided on the side of the base 1 away from the fixed housing 2. The support component 3 is fixedly connected to the side wall of the base 1. The support component 3 extends from the base 1 toward the side away from the fixed housing 2, and the support component 3 is used to fix the base 1 to the bottom of the water in the outside world, thereby fixing the base 1 and the fixed housing 2.

[0031] A limiting component 4 is also provided on the side wall of the fixed housing 2. One end of the limiting component 4 is located inside the fixed housing 2, and the other end of the limiting component 4 is located on the outer side wall of the fixed housing 2. Thus, the limiting component 4 limits the side wall of the gas explosion source located inside the fixed housing 2, thereby limiting and fixing the gas explosion source inside the fixed housing 2.

[0032] A water-permeable hole 12 is vertically provided on the side wall of the base 1. Multiple water-permeable holes 12 are provided along the circumference of the base 1. The water-permeable holes 12 completely penetrate the side wall of the base 1. The water-permeable holes 12 can stabilize the direction of the base 1 during movement in water and reduce the impact of water flow on the movement of the base 1.

[0033] In one embodiment, the mass of the base 1 is greater than the mass of the fixed shell, causing the center of gravity of the entire device to shift toward the side closer to the base 1, and the cross-sectional area of ​​the base 1 is greater than the cross-sectional area of ​​the fixed shell 2, thereby improving the stability of the entire device.

[0034] In some embodiments, the support component 3 includes a toothed claw 31. One end of the toothed claw 31 near the bottom plate is fixedly connected to the bottom plate, and the other end of the toothed claw 31 away from the bottom plate extends toward the side of the bottom plate away from the fixed housing 2. In a specific embodiment, the end of the toothed claw 31 away from the bottom plate has a pointed structure, and the width of the toothed claw 31 gradually decreases from one side of the bottom plate toward the side away from the fixed housing 2, thereby facilitating the fixing of the end of the toothed claw 31 to the bottom of the water, thereby positioning the bottom plate and the fixed housing 2, and enabling the bottom plate to be stably fixed to the bottom of the water, reducing the possibility of tilting during placement.

[0035] Multiple claws 31 are arranged along the circumference of the base plate. The multiple claws 31 are fixedly connected to the base plate by bolts. In a specific embodiment, the claw 31 includes a horizontally arranged connecting part 311 and a vertically arranged supporting part 312. The connecting part 311 and the supporting part 312 are fixedly connected, and the supporting part 312 extends from the connecting part 311 toward the side away from the base plate, so that the end of the supporting part 312 can be inserted into the bottom of the water to provide stable support for the base plate.

[0036] In some embodiments, the limiting component 4 includes a first limiting component 41 and a second limiting component 42. The first limiting component 41 is located on the side of the second limiting component 42 closer to the base 1, and multiple first limiting components 41 are equidistantly spaced along the circumference of the fixed housing 2. Multiple second limiting components 42 are equidistantly spaced along the height direction of the fixed housing 2.

[0037] In this embodiment, the first limiting component 41 includes a first support column 411, which is a rod-shaped structure. The side wall of the fixed housing 2 is horizontally provided with a first threaded hole 21. The end of the first support column 411 extends into the interior of the fixed housing 2 through the first threaded hole 21, and the side wall of the first support column 411 is threadedly connected to the side wall of the fixed housing 2. Thus, the end of the first support column 411 provides radial support for the gas explosion source located inside the fixed housing 2, which can limit the radial movement of the gas explosion source inside the fixed housing 2.

[0038] The second limiting component 42 includes a second support column 421, which is inclined and extends radially from the axis of the fixed housing 2 to the outer side wall of the fixed housing 2, gradually tilting towards the side away from the base 1. A second threaded hole 22 is provided on the side wall of the fixed housing 2 relative to the second support column 421. The second threaded hole 22 and the second support column 421 are arranged opposite each other and coaxially, allowing the second support column 421 to extend into the interior of the fixed housing 2 through the second threaded hole 22. The side wall of the second support column 421 is threadedly connected to the side wall of the fixed housing 2. One end wall of the second support column 421 abuts against the upper part of the circumferential side wall of the gas explosion source, thereby limiting the movement of the gas explosion source towards the side away from the base 1 and improving its directional capability during the explosion process.

[0039] In another embodiment, a limiting ring is also provided inside the fixed housing 2. The limiting ring is coaxially arranged with the fixed housing 2 and is located on the side of the gas explosion source away from the base 1. The limiting ring abuts against the end of the gas explosion source, and the end of the limiting ring is positioned by the second support column 421, thereby restricting the movement of the limiting ring. During the explosion of the gas explosion source, the limiting ring can restrict the gas explosion source from moving towards the side away from the base 1.

[0040] Multiple second threaded holes 22 are provided along the height direction of the fixed housing 2, so that the position of the second threaded post can be adjusted according to the height of different gas explosion sources, so that the end of the second threaded post can abut against the upper side wall of the gas explosion source.

[0041] A through hole 23 is coaxially formed on the side wall of the fixed housing 2 facing away from the base 1. The through hole 23 is in communication with the interior of the fixed housing 2, allowing control wires and other wires of the gas explosion source to pass through the through hole 23. A handle 24 is also fixedly connected to the side wall of the fixed housing 2 facing away from the base 1. The handle 24 is used to move the fixed housing 2, and the connection point between the handle 24 and the fixed housing 2 is eccentrically set to the fixed housing 2.

[0042] 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.

[0043] 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. An underwater excitation and fixing device for a gas explosion vibration source, characterized in that, Including: Base (1); A fixed housing (2) is disposed on the base (1), wherein the mass of the base (1) is greater than the mass of the fixed housing (2); The support assembly (3) is located on the side of the base (1) away from the fixed housing (2) to connect with the outside; The limiting component (4) is located on the side wall of the fixed housing (2), with one end of the limiting component (4) located inside the fixed housing (2), and is used to limit the device inside the fixed housing (2).

2. The underwater excitation and fixing device for a gas explosion vibration source according to claim 1, characterized in that, The fixed housing (2) is open at one end near the base (1), and the base (1) has a through hole (11) relative to the opening, and the through hole (11) is connected to the opening.

3. The underwater excitation and fixing device for a gas explosion vibration source according to claim 1, characterized in that, The base (1) has a water-permeable hole (12) that penetrates the side wall of the base (1).

4. The underwater excitation and fixing device for a gas explosion vibration source according to claim 1, characterized in that, The limiting component (4) includes a first limiting component (41) and a second limiting component (42). A plurality of first limiting components (41) are arranged along the circumference of the fixed housing (2). The first limiting component (41) is located on the side of the second limiting component (42) close to the base (1). The second limiting component (42) is arranged along the circumference of the fixed housing (2).

5. The underwater excitation and fixing device for a gas explosion vibration source according to claim 4, characterized in that, The second limiting component (42) includes a second support column (421), which is threadedly connected to the fixed housing (2). The end of the second support column (421) extends into the fixed housing (2), and the second support column (421) is inclined from the center of the fixed housing (2) toward the side wall of the fixed housing (2) toward the side away from the base (1).

6. The underwater excitation and fixing device for a gas explosion vibration source according to claim 5, characterized in that, The side wall of the fixed housing (2) is provided with a second threaded hole (22), which is threadedly engaged with the second support column (421). Multiple threaded holes are provided along the axial direction of the fixed housing (2).

7. The underwater excitation and fixing device for a gas explosion vibration source according to claim 4, characterized in that, The second limiting component (42) includes a support ring, which is located inside the fixed housing (2) and is coaxially arranged with the fixed housing (2).

8. The underwater excitation and fixing device for a gas explosion vibration source according to claim 4, characterized in that, The first limiting component (41) includes a first support column (411), which is threadedly connected to the fixed housing (2), and the end of the first support column (411) extends into the fixed housing (2).

9. The underwater excitation and fixing device for a gas explosion vibration source according to claim 1, characterized in that, The support component (3) includes a toothed claw (31) which is fixed to the base (1) and extends toward the side away from the base (1).

10. The underwater excitation and fixing device for a gas explosion vibration source according to claim 1, characterized in that, The fixed housing (2) has a through hole (23) at one end away from the base (1), and the through hole (23) communicates with the interior of the fixed housing (2).

Images