A combustible gas seismic bomb

Abstract

The present invention belongs to the field of seismic bombs and discloses a combustible gas seismic bomb, comprising a shell, an ignition assembly, an inflation assembly and a bursting diaphragm. The shell is provided with a holding chamber for holding combustible gas, the first end of the shell is closed and provided with an ignition pipe and an inflation pipe connected to the holding chamber, and the second end of the shell is provided with an opening; the ignition assembly is sealed to the ignition pipe; the inflation assembly is sealed to the inflation pipe, and one end extends into the holding chamber, and the other end is located outside the holding chamber, for filling the holding chamber with gas; the bursting diaphragm is provided at the second end of the shell to seal the opening of the shell. The present invention uses the explosion of combustible gas to generate energy, and the explosion products are water and a small amount of carbon dioxide, which are pollution-free and environmentally friendly; a non-explosive ignition device is used, which is safer and more convenient to use and transport; the bursting diaphragm is used to achieve directional discharge of the explosion energy, with large effective energy, high energy utilization rate, and little secondary damage to surrounding buildings.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake source bombs, in particular to a combustible gas earthquake source bomb. Background Art

[0002] Seismic exploration is a primary and effective method used in geophysical exploration to address engineering exploration problems, such as oil and gas exploration. Its principle is to artificially generate seismic waves at the surface. As these waves propagate underground, they encounter interfaces between rock layers with different dielectric properties, causing them to reflect and refract. These waves are then received by detectors on the surface or in wells. The received seismic wave signals are related to the characteristics of the earthquake source, the location of the detectors, and the properties and structure of the underground rock formations through which the waves pass. By processing and interpreting these seismic wave recordings, the properties and morphology of the underground rock formations can be inferred.

[0003] In seismic exploration, the excitation of elastic waves is crucial. There are two main types of seismic sources currently widely used: one is the explosive blast source; the other is the physical blast source. The main disadvantages of using explosive blast sources for seismic exploration are as follows: (1) the toxic and harmful substances produced after the explosive blast cause environmental pollution; (2) the transportation and use safety are poor; (3) the transportation and use require special pyrotechnic qualifications and approvals; (4) the source direction is uncontrollable, there are many seismic clutter waves, the energy utilization rate is low, and it is easy to cause damage to surrounding buildings. In view of the above reasons, the use of explosive blast sources in seismic exploration has been increasingly restricted in recent years. Therefore, it is necessary to develop a green and environmentally friendly source that can replace traditional explosives. Summary of the Invention

[0004] The purpose of the present invention is to provide a combustible gas earthquake source bomb which is not only highly safe but also has high energy utilization rate and causes little damage to surrounding buildings.

[0005] The technical solutions provided by the present invention are as follows:

[0006] A combustible gas seismic bomb, comprising:

[0007] a shell, wherein the interior of the shell is hollow to form a receiving chamber for receiving combustible gas, the first end of the shell is closed and provided with an ignition pipe communicating with the receiving chamber and a charging pipe communicating with the receiving chamber, and the second end of the shell is provided with an opening;

[0008] an ignition assembly, sealed and connected to the ignition pipe;

[0009] an inflation component, which is sealed with the inflation pipe, has one end extending from the inflation pipe into the accommodating cavity, and the other end is located outside the accommodating cavity, and is used to inflate gas into the accommodating cavity;

[0010] A bursting disc is provided at the second end of the housing and is used for sealing the opening of the housing.

[0011] In some embodiments, the shell includes a head, a first cylinder and a second cylinder connected in sequence, the end of the second cylinder is open, the ignition pipe and the inflation pipe are arranged on the head, and the edge of the bursting disk is welded between the first cylinder and the second cylinder.

[0012] In some embodiments, the cross section of the bursting disc is arc-shaped, the concave portion of the bursting disc is disposed toward the first cylinder, and the convex portion of the bursting disc is located within the second cylinder.

[0013] In some embodiments, the ignition assembly includes an ignition plug, a control circuit board, and an ignition element. The ignition plug is sealed and connected to the ignition pipe. The ignition element is disposed in the accommodating cavity. The control circuit board is electrically connected to the ignition element.

[0014] In some embodiments, the ignition plug is sealed to the ignition pipe via an NPT thread.

[0015] In some embodiments, a sealing ring is further included, and the sealing ring is disposed between the ignition plug and the ignition pipe.

[0016] In some embodiments, the inflation assembly includes an inflation hose, a one-way valve and an air intake pipe, the inflation hose is connected to the air intake pipe through the one-way valve, the one-way valve is sealed to the inflation pipe, and the air intake pipe extends into the accommodating cavity.

[0017] In some embodiments, a plurality of flow-turbulating holes are provided on the wall of the air inlet pipe.

[0018] In some embodiments, the depth of the air inlet pipe extending into the accommodating cavity is greater than half of the height of the shell.

[0019] In some embodiments, the one-way valve is sealed to the inflation pipe via an NPT thread.

[0020] The technical effects of the present invention are: energy is generated by the explosion of combustible gas, and the explosion products are water and a small amount of carbon dioxide, which are pollution-free and environmentally friendly; a non-explosive ignition device is used, which is safer and more convenient to use and transport; and the blasting energy is released in a directional manner through the bursting membrane, with large effective energy, high energy utilization rate, and little secondary damage to surrounding buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 It is a cross-sectional view of a combustible gas seismic bomb provided in a specific embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 10. Shell; 101. Accommodating chamber; 11. Head; 12. First cylinder; 13. Second cylinder; 20. Ignition assembly; 21. Ignition plug; 22. Ignition element; 30. Inflating assembly; 31. Inflating hose; 32. One-way valve; 33. Inlet pipe; 40. Bursting diaphragm; 50. Ignition pipe; 60. Inflating pipe. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. As used herein, "one" not only means "only one" but also "more than one."

[0027] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0028] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0029] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In one embodiment of the present application, Figure 1As shown, a combustible gas seismic bomb includes a shell 10, an ignition component 20, an inflation component 30 and a bursting membrane 40. The shell 10 is hollow inside to form a accommodating chamber 101 for accommodating combustible gas. The first end of the shell 10 is closed and is provided with an ignition pipe 50 connected to the accommodating chamber 101 and an inflation pipe 60 connected to the accommodating chamber 101. The second end of the shell 10 is provided with an opening; the ignition component 20 is sealedly connected to the ignition pipe 50; the inflation component 30 is sealedly connected to the inflation pipe 60, one end of the inflation component 30 extends from the inflation pipe 60 into the accommodating chamber 101, and the other end is located outside the accommodating chamber 101, for filling gas into the accommodating chamber 101; the bursting membrane 40 is arranged at the second end of the shell 10, for sealing the opening of the shell 10.

[0031] Specifically, the combustible gas seismic bomb of this embodiment is a new type of artificial seismic source bomb. Combustible gases such as natural gas and hydrogen are mixed with oxygen and then ignited remotely using an ignition head. The explosive products couple with the surrounding medium to directly generate shock waves, making it suitable for use in complex terrain. The combustible gas can be hydrocarbons such as natural gas, hydrogen, and acetylene. The explosion products are water and a small amount of carbon dioxide. This is a green and environmentally friendly alternative to traditional explosives and offers a higher-energy seismic source among non-explosive seismic sources.

[0032] The housing 10 has a chamber 101 inside. Combustible gas and oxygen are separately introduced into the chamber 101 through the inflator assembly 30 for mixing. The housing 10 is closed at one end and open at the other. The open end is sealed by a bursting disc 40. The housing 10 is constructed of a metal with high compressive strength. The strength of the housing 10 must be sufficient to withstand the explosive impact of igniting the combustible gas, ensuring that the housing 10 structure remains intact during a rupture.

[0033] An ignition assembly 20 is mounted at one end of the housing 10. Remote ignition is initiated through this assembly, rapidly destroying the bursting disc 40 under the bursting pressure while leaving the housing 10 structurally intact. This allows the explosive energy to be released from the second end of the housing 10, achieving a targeted release of explosive energy. The bursting disc 40 is made of materials such as stainless steel and carbon steel. Its strength is significantly lower than that of the housing 10. The design of its material and thickness ensures that it will be destroyed at the desired bursting pressure, ensuring rapid rupture during explosion. Grooves are also incorporated into the surface of the bursting disc 40 to control its bursting pressure.

[0034] Compared with traditional explosive seismic bombs, the combustible gas seismic bomb of this embodiment is pollution-free and environmentally friendly because the explosion products are water and a small amount of carbon dioxide; the blasting energy can be released in a direction through the blasting diaphragm, with large effective energy, high energy utilization rate, and little secondary damage to surrounding buildings.

[0035] In some embodiments, as Figure 1 As shown, the shell 10 includes a head 11, a first cylinder 12 and a second cylinder 13 connected in sequence. The end of the second cylinder 13 is open, and the ignition pipe 50 and the inflation pipe 60 are arranged on the head 11. The edge of the bursting disk 40 is welded between the first cylinder 12 and the second cylinder 13 to seal the opening of the second cylinder 13 through the bursting disk 40.

[0036] The sealing head 11, first barrel 12, and second barrel 13 are all connected by welding, which improves the sealing performance of the seismic projectile. The bursting disc 40, first barrel 12, and second barrel 13 are also fully welded, which not only increases the connection strength but also improves the sealing performance of the seismic projectile. The materials of the sealing head 11, first barrel 12, and second barrel 13 can be the same or different, but they must ensure that their structures are not damaged during blasting.

[0037] The bursting disc 40 has an arcuate cross-section, with the concave portion of the bursting disc 40 facing the first barrel 12 and the convex portion of the bursting disc 40 located within the second barrel 13. In this embodiment, the bursting disc 40 has an arcuate cross-section with the convex portion facing the exterior of the seismic bomb, and the convex portion of the bursting disc 40 is located within the second barrel 13. This means that the entire bursting disc 40 is located within the second barrel 13, protecting the bursting disc 40 from damage during pre-embedded installation. As a variation, the bursting disc 40 can also be flat, or with the convex portion of the bursting disc 40 facing the head 11.

[0038] In some embodiments, as Figure 1 As shown, the ignition assembly 20 includes an ignition plug 21, a control circuit board and an ignition element 22. The ignition plug 21 is sealed and connected to the ignition pipe 50. The ignition element 22 is arranged in the accommodating cavity 101. The control circuit board is arranged on the ignition plug 21, and the control circuit board is electrically connected to the ignition element 22. A control circuit is provided on the control circuit board. The discharge of the control circuit to the ignition element 22 can detonate the combustible gas seismic bomb. After the explosion, the bursting diaphragm 40 is destroyed, and huge energy is ejected from the bursting diaphragm 40 of the shell 10, forming a fixed-point blasting. The ignition assembly 20 of this embodiment adopts a capacitive bridge wire ignition, which can achieve reliable detonation at a long distance, avoids the safety and pyrotechnic qualification issues caused by gunpowder detonation, and is safer and more convenient to use and transport.

[0039] The ignition plug 21 is sealed to the ignition pipe 50 via an NPT thread; a sealing ring is also provided between the ignition plug 21 and the ignition pipe 50. The dual sealing structure of NPT thread and O-ring between the ignition assembly 20 and the ignition pipe 50 can improve the sealing performance of the seismic bomb.

[0040] In some embodiments, as Figure 1 As shown, the inflation assembly 30 includes an inflation hose 31, a one-way valve 32, and an air inlet pipe 33. The inflation hose 31 is connected to the air inlet pipe 33 via the one-way valve 32, which is sealed to the inflation pipe 60. The air inlet pipe 33 extends into the accommodating chamber 101. The inflation hose 31 can be a metal hose, which is not only strong but also deformable, facilitating the landfill and routing of the seismic source bomb in complex terrain and soil. The one-way valve 32 is provided on the inflation hose 31 and is sealed to the inflation pipe 60. This not only ensures the sealing performance of the seismic source bomb body, but also prevents the backflow of combustible gases within the seismic source bomb, which may cause safety accidents. The air inlet pipe 33 extends into the accommodating chamber 101 to fill the seismic source bomb with combustible gas and oxygen.

[0041] The tube wall of the air inlet pipe 33 is provided with several flow-turbulating holes. The tube wall of the air inlet pipe 33 is provided with several flow-turbulating holes, so that the combustible gas charged into can be fully mixed with oxygen, not only the combustion efficiency is high, but also the explosion energy is improved.

[0042] The depth of the air inlet pipe 33 extending into the accommodating chamber 101 is greater than half the height of the housing 10, allowing gas to enter the lower half of the accommodating chamber 101, thereby achieving more uniform gas distribution within the accommodating chamber 101. The one-way valve 32 is sealed to the inflation pipe 60 via NPT threads, improving the sealing performance of the seismic bomb.

[0043] The method of using the combustible gas seismic bomb is as follows:

[0044] (1) First, bury the combustible gas seismic bomb in the soil at a certain depth;

[0045] (2) Use the inflation device to fill the combustible gas seismic bomb with oxygen to a certain pressure through the inflation assembly;

[0046] (3) Using the inflation device to fill the combustible gas into the combustible gas seismic bomb through the inflation assembly to a certain pressure;

[0047] (4) After the combustible gas and oxygen are evenly mixed, the mixed gas is ignited through the ignition component;

[0048] (5) The mixed gas explodes inside the combustible gas seismic bomb, and the energy is released downward through the rupture diaphragm at the bottom of the bomb, generating seismic waves;

[0049] (6) Measure seismic wave signals through seismic wave detection and analysis instruments, and obtain underground geological conditions by analyzing the detected seismic wave signals.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A combustible gas seismic bomb, characterized in that: include: a shell, wherein the interior of the shell is hollow to form a receiving chamber for receiving combustible gas, the first end of the shell is closed and provided with an ignition pipe communicating with the receiving chamber and a charging pipe communicating with the receiving chamber, and the second end of the shell is provided with an opening; an ignition assembly, sealed and connected to the ignition pipe; an inflation component, which is sealed with the inflation pipe, has one end extending from the inflation pipe into the accommodating cavity, and the other end is located outside the accommodating cavity, and is used to inflate gas into the accommodating cavity; a bursting disc disposed at the second end of the housing and configured to seal the opening of the housing; The shell comprises a sealing head, a first cylinder and a second cylinder connected in sequence, the end of the second cylinder is open, the ignition pipe and the inflation pipe are arranged on the sealing head, and the edge of the bursting disc is welded between the first cylinder and the second cylinder; The cross section of the bursting disc is arc-shaped, the concave portion of the bursting disc is arranged toward the first cylinder, and the convex portion of the bursting disc is located in the second cylinder; The ignition assembly includes an ignition plug, a control circuit board and an ignition element, wherein the ignition plug is sealed and connected to the ignition pipe, the ignition element is arranged in the accommodating cavity, and the control circuit board is electrically connected to the ignition element; The inflation assembly includes an inflation hose, a one-way valve, and an air intake pipe. The inflation hose is connected to the air intake pipe through the one-way valve. The one-way valve is sealed to the inflation pipe. The air intake pipe extends into the accommodating cavity. A plurality of flow-turbulating holes are provided on the pipe wall of the air inlet pipe.

2. A combustible gas seismic bomb according to claim 1, characterized in that: The ignition plug is sealed and connected to the ignition pipe via an NPT thread.

3. A combustible gas seismic bomb according to claim 2, characterized in that: It also includes a sealing ring, which is arranged between the ignition plug and the ignition pipe.

4. The combustible gas seismic bomb according to claim 1, characterized in that: The depth of the air inlet pipe extending into the accommodating cavity is greater than half of the height of the shell.

5. The combustible gas seismic bomb according to claim 1, characterized in that: The one-way valve is sealed and connected to the inflation pipe via an NPT thread.

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