Directional excitation gas explosion seismic source device and seismic source system

Abstract

The utility model discloses a directional excitation gas explosion seismic source device and a seismic source system, and relates to the technical field of geophysical prospecting equipment.The directional excitation gas explosion seismic source device comprises a shell, a gas containing cavity is formed in the shell, and the shell comprises a first side shell; a groove is formed in the outer wall of the first side shell in the length direction of the first side shell; the first plugging piece and the second plugging piece are connected to the two ends of the shell correspondingly and used for sealing the gas containing cavity; the inflation ignition head is arranged in the first plugging piece, and an inflation ignition channel communicated with the gas containing cavity is formed in the inflation ignition head; explosion energy of most of gas can be excited in one direction, more transverse waves are generated, high transverse wave energy is obtained, and application of the gas explosion seismic source in transverse wave exploration is promoted.

Description

Technical Field

[0001] The present application relates to the technical field of geophysical exploration equipment, and in particular to a directional excitation gas explosion source device and a source system. Background Art

[0002] Gas explosion source is the excitation source formed by the reaction of oxygen and combustible gases such as methane to produce high-temperature and high-pressure gas and release it instantly. The pressure generated by the release is dozens of times greater than the initial gas pressure. The rapid release of high-pressure gas after the closed container is exploded can form a shock wave, which produces plastic and elastic deformation of the surrounding strata to form seismic waves. It has the characteristics of low explosion speed, high energy conversion rate, and green environmental protection. In recent years, it has been increasingly used in transparent cities, earthquake monitoring, shallow exploration and other fields.

[0003] There are two types of seismic wave propagation: longitudinal waves and transverse waves. The direction of displacement of longitudinal wave particles is parallel to the direction of wave propagation, while the direction of displacement of transverse wave particles is perpendicular to the direction of wave propagation. The seismic exploration method for collecting longitudinal wave signals is longitudinal wave exploration, and the exploration method for collecting transverse wave signals is transverse wave exploration. Compared with longitudinal wave exploration, transverse wave exploration has the advantages of less interference waves and higher exploration accuracy. However, the current gas explosion source device does not generate concentrated explosion energy, making it difficult to obtain strong transverse wave energy. Utility Model Content

[0004] The present application is to provide a directional excitation gas explosion source device and a source system, aiming to solve the problem that the explosion energy generated by the existing gas explosion device is not concentrated enough and it is difficult to obtain strong shear wave energy.

[0005] The first aspect of the present application provides a directional excitation gas explosion source device and a source system, comprising:

[0006] A shell, wherein a gas containing chamber is formed inside the shell, and the gas containing chamber is an asymmetric chamber; the shell comprises a first side shell, and a groove is formed on the outer wall of the first side shell along the length direction of the first side shell;

[0007] A first blocking member and a second blocking member, wherein the first blocking member and the second blocking member are respectively connected to two ends of the shell and are used to seal the gas containing chamber;

[0008] A gas-filled ignition head is arranged in the first blocking member, and a gas-filled ignition channel communicating with the gas containing cavity is formed inside the gas-filled ignition head;

[0009] The first blocking member is provided with a first inclined surface on one side facing the gas containing chamber; the second blocking member is provided with a second inclined surface on one side facing the gas containing chamber; the first inclined surface and the second inclined surface are arranged opposite to each other and are inclined toward the center of the first side shell at the same time.

[0010] Optionally, in the cross section of the groove, the size of the groove bottom is smaller than the size of the groove mouth.

[0011] Optionally, the shell further includes a second side shell, and the first side shell and the second side shell are located on opposite sides of the shell; the outer wall surface of the first side shell is set as a plane, and the outer wall surface of the second side shell is set as an arc surface, and the arc surface is a convex surface.

[0012] Optionally, the shell further includes a third side shell and a fourth side shell, the third side shell and the fourth side shell are located on another opposite side of the shell, and outer wall surfaces of the third side shell and the fourth side shell are both set to be planes.

[0013] Optionally, the first blocking member includes a first limiting portion and a first plug-in portion that are integrally connected;

[0014] The outer circumferential size of the first limiting portion is larger than the outer circumferential size of the first plug-in portion, and the outer circumferential size of the first plug-in portion is adapted to the port size of the first connecting end of the shell; the first plug-in portion is plug-fitted with the first connecting end of the shell, and the first limiting portion abuts against the first connecting end of the shell.

[0015] Optionally, the second blocking member includes a second limiting portion and a second plug-in portion that are integrally connected;

[0016] The outer circumferential dimension of the second limiting portion is larger than the outer circumferential dimension of the second plug-in portion, and the outer circumferential dimension of the second plug-in portion is adapted to the port dimension of the second connecting end of the shell; the second plug-in portion is plug-fitted with the second connecting end of the shell, and the second limiting portion abuts against the second connecting end of the shell.

[0017] Optionally, a through threaded hole is formed in the first blocking member along the length direction of the shell; an external thread matching the threaded hole is provided on the gas-filled ignition head, and the gas-filled ignition head is threadedly connected to the threaded hole.

[0018] Beneficial effects:

[0019] The present application provides a directional excitation gas explosion source device, comprising: a shell, a gas containing chamber is formed inside the shell, and the gas containing chamber is an asymmetric chamber; the shell comprises a first side shell, and a groove is formed on the outer wall of the first side shell along the length direction of the first side shell; a first blocking member and a second blocking member, the first blocking member and the second blocking member are respectively connected to the two ends of the shell, and are used to close the gas containing chamber; an air-filled ignition head is arranged in the first blocking member, and an air-filled ignition channel communicating with the gas containing chamber is formed inside the air-filled ignition head; a first inclined surface is arranged on the side of the first blocking member facing the gas containing chamber; a second inclined surface is arranged on the side of the second blocking member facing the gas containing chamber; the first inclined surface and the second inclined surface are arranged opposite to each other, and are inclined toward the center of the first side shell at the same time. In the present application, the gas containing chamber is an asymmetric chamber, which is more conducive to the directional excitation of energy than the conventional symmetrical chamber structure. By setting a groove on the first side shell, the thickness of the first side shell at the groove is thinner than the thickness of the area outside the groove, which is conducive to the rupture of the first side shell at the groove, so that the explosion energy can be released from the rupture to generate a directional shock wave; by setting the first slope and the second slope, the first slope and the second slope are arranged opposite to each other and inclined toward the center of the first side shell at the same time, the explosion energy in the gas containing chamber can be gathered toward the first side shell, so that most of the explosion energy of the gas is excited in one direction, more shear waves can be generated, and higher shear wave energy can be obtained, which promotes the application of gas explosion sources in shear wave exploration.

[0020] A second aspect of the present application provides a seismic source system, comprising the directional excitation gas explosion seismic source device as described above.

[0021] Optionally, the seismic source system further includes an inflation device and an ignition device;

[0022] The output end of the charging device is connected to the charging ignition head for injecting mixed combustible gas into the gas containing chamber; the ignition device is connected to the charging ignition head for igniting the mixed combustible gas.

[0023] The advantages of the seismic source system and the above-mentioned gas explosion seismic source device over the prior art are the same and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1It is a schematic diagram of the three-dimensional structure of a gas explosion source device for directional excitation proposed in one embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the structure of a gas explosion source device for directional excitation proposed in an embodiment of the present application. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the structure of a gas explosion source device for directional excitation proposed in an embodiment of the present application. Figure 2 ;

[0028] Figure 4 It is a top view of a directional excitation gas explosion source device proposed in one embodiment of the present application placed in a blast well.

[0029] Description of reference numerals:

[0030] 1. Shell; 11. First side shell; 12. Second side shell; 2. First blocking piece; 21. First limiting portion; 22. First plug-in portion; 3. Second blocking piece; 31. Second limiting portion; 32. Second plug-in portion; 4. Gas-filled ignition head; 5. Groove; 61. First inclined surface; 62. Second inclined surface; 7. Gun well; 8. Soil. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In the related technology, there are two types of seismic wave propagation: longitudinal waves and transverse waves. The direction of displacement of longitudinal wave particles is parallel to the direction of wave propagation, while the direction of displacement of transverse wave particles is perpendicular to the direction of wave propagation. The seismic exploration method for collecting longitudinal wave signals is longitudinal wave exploration, and the exploration method for collecting transverse wave signals is transverse wave exploration. Compared with longitudinal wave exploration, transverse wave exploration has the advantages of less interference waves and higher exploration accuracy. However, the current gas explosion source device does not generate enough concentrated explosion energy, making it difficult to obtain strong transverse wave energy.

[0033] In view of this, the embodiments of the present application provide a directional excitation gas explosion source device and a source system.

[0034] See also Figure 1 , a directional excitation gas explosion source device and source system, comprising:

[0035] A shell 1, wherein a gas containing chamber is formed inside the shell 1, and the gas containing chamber is an asymmetric chamber; the shell 1 comprises a first side shell 11, and a groove 5 is formed on the outer wall of the first side shell 11 along the length direction of the first side shell 11;

[0036] A first blocking member 2 and a second blocking member 3, wherein the first blocking member 2 and the second blocking member 3 are respectively connected to two ends of the housing 1 to seal the gas containing chamber;

[0037] The gas-filled ignition head 4 is arranged in the first blocking member 2 , and a gas-filled ignition channel communicating with the gas containing chamber is formed inside the gas-filled ignition head 4 .

[0038] The first blocking member 2 is provided with a first inclined surface 61 on the side facing the gas containing chamber; the second blocking member 3 is provided with a second inclined surface 62 on the side facing the gas containing chamber; the first inclined surface 61 and the second inclined surface 62 are arranged opposite to each other and are inclined toward the center of the first side shell 11 at the same time.

[0039] Specifically, in this embodiment, the shell 1 is formed by four side shells, one side of which is a first side shell 11. A groove 5 is arranged on the outer wall of the first side shell 11. The groove 5 is located in the middle of the first side shell 11 and is arranged along the length direction of the first side shell 11. The internal space formed by the four side shells is a gas containing chamber, which can contain mixed combustible gas. A first blocking member 2 and a second blocking member 3 are arranged at both ends of the shell 1 to seal the gas containing chamber. An inflatable ignition head 4 is arranged in the first blocking member 2. An inflatable ignition channel is formed inside the inflatable ignition head 4. The inflatable ignition channel is communicated with the gas containing chamber. The inflatable ignition head 4 is used to connect the inflatable device so that the mixed combustible gas can enter the gas containing chamber. The head of the inflatable ignition head 4 has an ignition element. The inflatable ignition head 4 is also used to connect the ignition device. The ignition device can stimulate the ignition element to ignite the mixed combustible gas, so that the mixed gas explodes in the gas containing chamber. The gas containing cavity is an asymmetric cavity, which is more conducive to directional excitation of energy than the symmetrical cavity used in conventional excitation devices. A groove 5 is opened on the first side shell 11, so the thickness of the first side shell 11 at the groove 5 is thinner than the thickness of the area outside the groove 5. When the mixed combustible gas explodes, the groove 5 ruptures first, so that the explosion energy can be released from the rupture to generate a directional shock wave, thereby realizing directional excitation of energy.

[0040] See also Figure 2A first inclined surface 61 is provided on the side of the first blocking member 2 facing the gas containing chamber, and a second inclined surface 62 is provided on the side of the second blocking member 3 facing the gas containing chamber. The first inclined surface 61 and the second inclined surface 62 are arranged opposite to each other and are inclined toward the center of the first side shell 11 at the same time, which can play a role in energy gathering and guidance. When the mixed combustible gas explodes, the explosion energy in the gas containing chamber can be gathered toward the first side shell 11 under the guidance of the first inclined surface 61 and the second inclined surface 62, which is conducive to the breaking of the shell 1 at the first side shell 11, and further ensures that most of the explosion energy is excited in one direction.

[0041] Optionally, in the cross section of the groove 5 , the size of the groove bottom of the groove 5 is smaller than the size of the groove opening of the groove 5 .

[0042] Specifically, the cross-sectional shape of the groove 5 can be set to a V-shape or an inverted trapezoid, and the width of the groove 5 at the bottom is smaller than the width of the groove 5 at the notch. In this way, since the size of the groove 5 at the bottom is narrower, stress concentration is easily formed at the bottom. Therefore, when the gas explodes, the shell 1 is more likely to break at the groove 5, further ensuring the directional excitation of energy.

[0043] Optionally, the shell 1 also includes a second side shell 12, and the first side shell 11 and the second side shell 12 are located on opposite sides of the shell 1; the outer wall surface of the first side shell 11 is set to a plane, and the outer wall surface of the second side shell 12 is set to an arc surface, and the arc surface is a convex surface.

[0044] Specifically, among the four side shells constituting the housing 1, the first side shell 11 and the second side shell 12 are arranged opposite to each other, the outer wall surface of the first side shell 11 is a plane, and the outer wall surface of the second side shell 12 is a convex arc surface. Figure 4 As shown, when in use, the entire gas explosion source device can be vertically placed in a pre-drilled turret 7, and the turret 7 has a cylindrical accommodating cavity. The cross-sectional size of the shell 1 is adapted to the turret 7, and the second side shell 12 is placed close to the wall of the turret 7. Since the outer wall of the second side shell 12 is set as an outwardly convex arc surface, it has a high fit with the wall of the turret 7; and the outer wall of the first side shell 11 is a plane, so there is a certain gap between it and the wall of the turret 7. The existence of the gap is conducive to the release of fragments of the shell 1 and the shock wave at the fragments during the explosion. Under the reaction force of the shock wave, the arc surface of the second side shell 12 can form a better impact force on the soil 8 through the wall, thereby generating stronger shear wave energy.

[0045] Optionally, the shell 1 further includes a third side shell and a fourth side shell, wherein the third side shell and the fourth side shell are located at another opposite side of the shell 1, and outer wall surfaces of the third side shell and the fourth side shell are both set to be planes.

[0046] Specifically, among the four side shells constituting the shell 1, the third side shell and the fourth side shell are arranged opposite to each other, and the outer wall surfaces of the third side shell and the fourth side shell are both arranged as planes. When in use, the entire gas explosion source device can also be placed horizontally into a pre-dug earth pit, so that the third side shell or the fourth side shell is placed toward the bottom of the pit. Since the outer wall surfaces of the third side shell and the fourth side shell are both arranged as planes, the gas explosion source device can fit with the bottom of the pit when placed horizontally without rolling, which is conducive to maintaining the stability of the device, so that during the entire excitation process, the first side shell 11 as the impact surface can always face the target direction, ensuring that the impact surface is perpendicular to the direction of the survey line.

[0047] In practical applications, the housing 1 can be directly made of D-shaped steel.

[0048] Optionally, the first sealing member 2 includes a first limiting portion 21 and a first plug-in portion 22 that are integrally connected; the outer circumferential size of the first limiting portion 21 is larger than the outer circumferential size of the first plug-in portion 22, and the outer circumferential size of the first plug-in portion 22 is adapted to the port size of the first connecting end of the shell 1; the first plug-in portion 22 is plug-fitted with the first connecting end of the shell 1, and the first limiting portion 21 abuts against the first connecting end of the shell 1.

[0049] Specifically, the shape of the first blocking member 2 is adapted to the shape of the port of the first connecting end of the housing 1, see Figure 2 The first blocking member 2 includes a first limiting portion 21 and a first plug-in portion 22, wherein the outer circumference of the first plug-in portion 22 matches the port size of the first connection end of the housing 1, the outer circumference of the first limiting portion 21 is larger than the outer circumference of the first plug-in portion 22, and the first limiting portion 21 and the first plug-in portion 22 are connected as a whole to form a structure similar to a step-type. During assembly, the first plug-in portion 22 extends from the first connection end port of the housing 1 into the interior of the housing 1 and plugs with the first connection end. Since the outer circumference of the first limiting portion 21 is larger than the outer circumference of the first plug-in portion 22, the first limiting portion 21 cannot extend into the interior of the housing 1, but abuts against the end face of the first connection end to form a limit, thereby preventing the entire first blocking member 2 from falling completely into the housing 1 during assembly or use, thereby ensuring the reliability of the device.

[0050] On this basis, the first inclined surface 61 can be provided on a side of the first plug-in portion 22 facing the gas containing chamber.

[0051] Optionally, the second sealing member 3 includes a second limiting portion 31 and a second plug-in portion 32 that are connected in one piece; the outer circumferential size of the second limiting portion 31 is larger than the outer circumferential size of the second plug-in portion 32, and the outer circumferential size of the second plug-in portion 32 is adapted to the port size of the second connecting end of the shell 1; the second plug-in portion 32 is plug-fitted with the second connecting end of the shell 1, and the second limiting portion 31 abuts against the second connecting end of the shell 1.

[0052] Specifically, the shape of the second blocking member 3 is adapted to the shape of the port of the second connecting end of the housing 1, see Figure 2 The second blocking member 3 includes a second limiting portion 31 and a second plug-in portion 32, wherein the outer circumference of the second plug-in portion 32 matches the port size of the second connection end of the housing 1, the outer circumference of the second limiting portion 31 is larger than the outer circumference of the second plug-in portion 32, and the second limiting portion 31 and the second plug-in portion 32 are connected as a whole to form a structure similar to a ladder. During assembly, the second plug-in portion 32 extends from the second connection end port of the housing 1 into the interior of the housing 1 and plugs with the second connection end. Since the outer circumference of the second limiting portion 31 is larger than the outer circumference of the second plug-in portion 32, the second limiting portion 31 cannot extend into the interior of the housing 1, but abuts against the end face of the second connection end to form a limit, thereby preventing the entire second blocking member 3 from falling completely into the housing 1 during assembly or use, thereby ensuring the reliability of the device.

[0053] On this basis, the second inclined surface 62 can be provided on the side of the second plug-in portion 32 facing the gas containing chamber.

[0054] Optionally, in order to further ensure the connection stability between the first sealing member 2 and the shell 1, and between the second sealing member 3 and the shell 1, the first sealing member 2 and the shell 1, and the second sealing member 3 and the shell 1 can be respectively connected and fixed by welding to ensure the sealing of the gas containing chamber.

[0055] Optionally, a through threaded hole is provided in the first blocking member 2 along the length direction of the shell 1; the gas-filled ignition head 4 is provided with an external thread matching the threaded hole, and the gas-filled ignition head 4 is threadedly connected to the threaded hole.

[0056] In order to facilitate the injection of the mixed combustible gas into the gas containing chamber, a through hole is provided in the first plugging member 2 for installing the gas-filled ignition head 4. The gas-filled ignition head 4 and the first plugging member 2 can be connected by threaded connection. Specifically, a through threaded hole is provided in the first plugging member 2 along the length direction of the shell 1, and an external thread is provided on the gas-filled ignition head 4. The gas-filled ignition head 4 is threadedly matched with the threaded hole and assembled to the first plugging member 2. The gas-filled ignition head 4 has a gas-filled ignition channel inside, and the gas-filled ignition channel is connected to the gas containing chamber, so that the mixed combustible gas can be injected into the gas containing chamber through an external gas-filled device; the head of the gas-filled ignition head 4 has an ignition element, and the ignition element can be stimulated by the external ignition device to ignite the mixed combustible gas, so that the mixed gas explodes in the gas containing chamber.

[0057] In this embodiment, the gas-filled ignition head 4 is disposed on the first blocking member 2 . In other embodiments, the gas-filled ignition head 4 may also be disposed on the second blocking member 3 in the same manner.

[0058] The gas explosion source device provided in the embodiment of the present application has the following working process:

[0059] Before blasting, first screw the gas-filled ignition head 4 into the threaded hole of the first plugging member 2 by threaded connection, and the gas-filled ignition head 4 is connected to the external gas-filled device and the ignition device at the same time; then put the connected shell 1 into the well 7 drilled in advance, and make the outer wall of the second side shell 12 fit the well wall as much as possible, and leave a gap between the first side shell 11 and the well wall. After burying, use the gas-filled device to inject a mixed gas of a certain pressure into the shell 1, the mixed gas is generally oxygen and methane, and then use the ignition device to stimulate the ignition element of the gas-filled ignition head 4 to make the mixed gas explode.

[0060] After the gas explodes, high-temperature and high-pressure gas is instantly generated in the shell 1. Under the guidance of the first inclined surface 61 and the second inclined surface 62, most of the explosion energy is gathered toward the first side shell 11. Since the shell wall of the first side shell 11 at the groove 5 is weaker than the shell wall of the area outside the groove 5, and the size at the bottom of the groove is narrow, stress concentration is likely to occur, so the groove 5 will be broken first, and the energy of the fragments will be released from the broken shell, forming a directional shock wave, such as Figure 4 As shown in FIG. 1 , the direction indicated by the arrow at A is the direction of the explosion shock wave; and under the reaction force of the shock wave, the second side shell 12 of the shell 1 will also impact the well wall to generate seismic waves, such as Figure 4 As shown, the direction indicated by the arrow at B is the direction of the reverse impact of the shell 1.

[0061] Therefore, the gas explosion source device provided in the embodiment of the present application realizes directional excitation of explosion energy, can generate more shear waves, obtain higher shear wave energy, and promotes the application of gas explosion sources in shear wave exploration.

[0062] An embodiment of the present application also provides a seismic source system, comprising the directional excitation gas explosion seismic source device as described above.

[0063] Optionally, the source system also includes an inflation device and an ignition device; the output end of the inflation device is connected to the inflation ignition head 4, for injecting mixed combustible gas into the gas containing chamber; the ignition device is connected to the inflation ignition head 4, for igniting the mixed combustible gas.

[0064] Specifically, an inflation ignition channel is formed inside the inflation ignition head 4, and the inflation ignition channel is communicated with the gas containing chamber. The output end of the inflation device is connected to the inflation ignition head 4, and can inject a mixed combustible gas of a certain pressure into the gas containing chamber. The mixed combustible gas is usually oxygen and methane.

[0065] The head of the gas-filled ignition head 4 has an ignition element. The ignition device is connected to the gas-filled ignition head 4 and can stimulate the ignition element to ignite the mixed combustible gas, thereby causing the mixed gas to explode in the gas containing chamber.

[0066] The advantages of the seismic source system and the above-mentioned gas explosion seismic source device over the prior art are the same and will not be elaborated here.

[0067] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without more restrictions, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device comprising the element.

[0069] The technical solution provided by the present application is described in detail above. The principle and implementation method of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as limiting the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. A directional excitation gas explosion source device, characterized in that: include: A shell, wherein a gas containing chamber is formed inside the shell, and the gas containing chamber is an asymmetric chamber; the shell comprises a first side shell, and a groove is formed on the outer wall of the first side shell along the length direction of the first side shell; A first blocking member and a second blocking member, wherein the first blocking member and the second blocking member are respectively connected to two ends of the shell and are used to seal the gas containing chamber; A gas-filled ignition head is arranged in the first blocking member, and a gas-filled ignition channel communicating with the gas containing cavity is formed inside the gas-filled ignition head; The first blocking member is provided with a first inclined surface on a side facing the gas containing chamber, and the second blocking member is provided with a second inclined surface on a side facing the gas containing chamber. The first inclined surface and the second inclined surface are arranged opposite to each other and are inclined toward the center of the first side shell at the same time.

2. The directional excitation gas explosion source device according to claim 1 is characterized in that: In the cross section of the groove, the dimension at the groove bottom of the groove is smaller than the dimension at the groove mouth of the groove.

3. The directional excitation gas explosion source device according to claim 1 is characterized in that: The housing further comprises a second side housing, wherein the first side housing and the second side housing are located at one opposite side of the housing; The outer wall surface of the first side shell is set to be a plane, and the outer wall surface of the second side shell is set to be an arcuate surface, and the arcuate surface is a convex surface.

4. The directional excitation gas explosion source device according to claim 3 is characterized in that: The shell further includes a third side shell and a fourth side shell, wherein the third side shell and the fourth side shell are located at another opposite side of the shell, and the outer wall surfaces of the third side shell and the fourth side shell are both set to be planes.

5. The directional excitation gas explosion source device according to claim 1 is characterized in that: The first blocking member includes a first limiting portion and a first plug-in portion that are integrally connected; The outer circumferential size of the first limiting portion is larger than the outer circumferential size of the first plug-in portion, and the outer circumferential size of the first plug-in portion is adapted to the port size of the first connecting end of the shell; the first plug-in portion is plug-fitted with the first connecting end of the shell, and the first limiting portion abuts against the first connecting end of the shell.

6. The directional excitation gas explosion source device according to claim 1, characterized in that: The second blocking member includes a second limiting portion and a second plug-in portion that are integrally connected; The outer circumferential dimension of the second limiting portion is larger than the outer circumferential dimension of the second plug-in portion, and the outer circumferential dimension of the second plug-in portion is adapted to the port dimension of the second connecting end of the shell; the second plug-in portion is plug-fitted with the second connecting end of the shell, and the second limiting portion abuts against the second connecting end of the shell.

7. The directional excitation gas explosion source device according to claim 1 is characterized in that: A through threaded hole is formed in the first blocking member along the length direction of the shell; The gas charging ignition head is provided with an external thread matching the threaded hole, and the gas charging ignition head is threadedly connected to the threaded hole.

8. A seismic source system, characterized in that: A directional excitation gas explosion source device comprising the device described in any one of claims 1 to 7.

9. The seismic source system according to claim 8, characterized in that: Also includes: Inflator and ignition devices; The output end of the gas charging device is connected to the gas charging ignition head and is used to inject mixed combustible gas into the gas containing cavity; The ignition device is connected to the gas-charging ignition head and is used to ignite the mixed combustible gas.

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