Gas blasting heating tube with exothermic agent container made of metal material

Abstract

The utility model discloses a gas explosion heating tube with a heating agent container made of metal materials. The gas explosion heating tube comprises a heating tube body and an igniter used for segmented networking ignition. The heating tube main body comprises an exothermic agent container, the exothermic agent container is of a cylindrical metal material structure, and an exothermic agent is filled in the exothermic agent container; the igniter is inserted into the exothermic agent container and can be used for segmented networking ignition. After the exothermic agent is ignited, the exothermic agent container can be burnt only after the exothermic agent is fully burnt to enable the temperature in the heating tube to reach the melting point of a metal material serving as the exothermic agent container, and the burnt exothermic agent can be contacted with a gas source substance in the non-explosive phase change gas blasting device; the non-explosive phase change gas blasting product can use water as a gas source substance.

Description

Technical Field

[0001] The utility model relates to the field of blasting technology, and more specifically, to a gas blasting heating tube made of a heating agent container made of metal material. Background Art

[0002] "Non-explosive phase-change gas blasting" technology involves the combustion of an exothermic agent within a fracturing device to generate heat. The gas source absorbs the heat generated by the exothermic agent and transforms from a liquid or solid state into a gas. The gas source expands hundreds to thousands of times in volume, generating high-pressure gas that fractures the rock. Currently, the gas source primarily consists of liquid or solid carbon dioxide, with water not used. The exothermic agent in this technology only burns to generate heat, not gas, and thus lacks the three essential elements of an explosive explosion. The key to the gas source's phase change upon heating is that the exothermic agent and gas source do not chemically react. This process is a physical change, not a chemical explosion. Unlike explosives, it will not produce a chemical explosion in public spaces and poses no chemical explosion hazard. A chemical explosion is an explosion caused by a chemical change, where energy primarily comes from chemical reaction energy. The process and capacity of the chemical explosion depend on the exothermicity, rapidity, and gaseous product formation of the reaction; all three are essential. The liquid oxygen blasting currently available on the market involves a chemical reaction between liquid oxygen and sugar-containing paper, generating heat, carbon dioxide gas, and water vapor. This violates administrative regulations that exothermic agents cannot generate gases. Instead of chemically reacting with the paper, the liquid oxygen transforms into gas, thereby achieving the purpose of blasting rock. Therefore, it does not essentially qualify as "non-explosive phase-change gas blasting" technology. Existing "non-explosive phase-change gas blasting" products primarily include carbon dioxide blasting / fracture systems and a fracturing device that uses the blasthole as a dry ice container.

[0003] Existing CO2 blasting / detonation systems consist of a steel fracturing device, a heating tube, a filling machine, and liquid CO2. Specifically, on-site, the heating tube is first loaded into the steel fracturing device, then the filling machine compresses the liquid CO2 and injects it into the device. The steel fracturing device, filled with liquid CO2, is then placed into the drilled rock hole and detonated with an initiator. Currently, the heating tubes used in these gas blasting / detonation systems are typically made of non-metallic materials such as paper tubes and PVC tubes. Metallic materials are not commonly used in these containers. Furthermore, these heating tubes cannot be used in sections, as is done with electric detonators to detonate explosives.

[0004] See Figure 2As shown, an existing blasting hole used as a fracturing device for a dry ice container includes a blasting hole A drilled in rock. Blasting hole A is filled with a gas source material, dry ice B (sometimes replaced by ammonium bicarbonate). A heating tube C in contact with the dry ice is installed above the gas source material, dry ice B, in blasting hole A. Anhydrous taphole mud D is installed above the heating tube C in blasting hole A, and the upper portion is filled with stones, soil, etc. Sometimes a sealer E is also installed at the blasting hole mouth. The heating tube C is also connected to a detonator G outside the blasting hole via a detonation line F. Currently, the heating tubes used in this gas blasting / blasting system are all made of non-metallic materials such as paper tubes and PVC tubes to form the heating agent container. There is no precedent for using metal materials to make heating agent containers. Moreover, such heating tubes cannot be used in sections like electric detonators to detonate explosives.

[0005] The existing "non-explosive phase change gas blasting" heating tube has the following problems:

[0006] Existing "non-explosive phase-change gas blasting" heating tubes all use non-metallic materials to make the heating agent container. After the heating agent is ignited, the heating tube wall burns out before the heating agent is fully burned and the heat is far from being fully released, and the heating agent comes into direct contact with the gas source material. At this time, when encountering water with high melting potential and high specific heat capacity as the gas source material, the combustion cannot continue to the high pressure of hundreds of MPa to vaporize the water. Therefore, this type of heating tube is not suitable for "non-explosive phase-change gas blasting" devices with water as the gas source material.

[0007] An existing blasting hole is used as a fracturing device for a dry ice container during a "non-explosive phase-change gas blasting" project. Because its heating tube is made of non-metallic material to make the heating agent container, after the heating agent is ignited, the heating tube wall burns before the heating agent is fully burned and the heat is far from being fully released. The ignited heating agent comes into contact with the gas source material, making it difficult for the dry ice-like gas source material to quickly vaporize to the high pressure of hundreds of MPa that can fracture rocks. In practice, in order to quickly vaporize the dry ice-like gas source material to the high pressure of hundreds of MPa that can fracture rocks, the amount of heating agent must be greatly increased. As a result, the heating agent is still burning in large quantities when the rock has already fractured, emitting huge flames, which causes huge waste and poses a major safety hazard.

[0008] Existing "non-explosive phase change gas blasting" heating tubes all use non-metallic materials to make heating agent containers. After the heating agent is ignited, the heating tube wall is burned before the heating agent is fully burned and the heat is far from being fully released. The heat is difficult to be released instantly in a very short time. The heating agent comes into contact with the gas source material before it is completely burned. The gasified gas of the gas source material is difficult to instantly reach a pressure of more than hundreds of MPa that can crack rocks like the gas produced by the explosion of explosives. Therefore, when encountering cracked rocks in engineering practice, it is difficult to crack the rocks.

[0009] Existing heating tubes for "non-explosive phase-change gas blasting" use non-metallic materials to manufacture the heating agent container. After the heating agent is ignited, the heating tube wall burns out before the heating agent is fully burned and the heat is fully released. The heating agent comes into contact with the gas source material before it is completely burned. The gas from the gas source material cannot instantly reach the pressure of hundreds of megapascals that can fracture rock like explosive gas. Moreover, existing "non-explosive phase-change gas blasting" heating tubes cannot be ignited in a segmented network. This makes existing "non-explosive phase-change gas blasting" devices difficult to apply on a large scale in tunnel excavation and underground mine roadway excavation projects. Utility Model Content

[0010] The purpose of the utility model is to provide a gas explosion heating tube with a heating agent container made of metal material.

[0011] In order to solve the problems existing in the existing "non-explosive phase change gas explosion" heating tubes, the technical solution adopted by the present invention is as follows: a gas explosion heating tube with a heating agent container made of metal material, comprising a heating tube body with a heating agent container made of metal material and an igniter that can be segmented and ignited; the heating tube body includes a heating agent container, which is a cylindrical metal structure filled with heating agent; the igniter is inserted into the heating agent container.

[0012] Preferably, the heating agent container is a closed cylindrical structure, wherein a hollow capillary tube with an open upper end is provided in the middle thereof, and the hollow capillary tube is used for inserting the igniter.

[0013] Preferably, the material structure of the heating agent container adopts the best but not limited to metal materials such as iron, aluminum, steel, copper, etc., and the wall thickness of the metal material is set according to needs.

[0014] Preferably, the igniter includes a filling tube filled with ignition agent, one end of the filling tube is connected to an ignition head or an electronic control module, and their detonation circuits are externally connected to the detonating device.

[0015] Preferably, the diameter of the filling tube is smaller than the diameter of the hollow tube in the heating agent container.

[0016] Preferably, any one of a delay charge and an electronic control module is provided in the loading tube, both of which are used for segmented networking ignition, and the detonation circuits of the ignition devices of the two are externally connected to the detonating device.

[0017] Preferably, the filling tube and the empty capillary tube are made of, but not limited to, PVC material.

[0018] Preferably, the electronic control module is used for controlling the delay time of the ignition agent, and may have a dedicated circuit module for the detonator identity information code and the detonation password built in.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The existing "non-explosive phase-change gas blasting" device cannot use water as a gas source material. The utility model enables the "non-explosive phase-change gas blasting" device to use water as a gas source material.

[0021] The utility model solves the problem that in the existing fracturing device using a blast hole as a dry ice container, when a "non-explosive phase change gas blasting" project is carried out, the heating agent still burns in large quantities when the rock has been cracked, emitting huge flames, thereby reducing huge waste and eliminating safety hazards.

[0022] In engineering practice, the existing "non-explosive phase-change gas blasting" device is difficult to crack the rock when encountering cracked rock. The utility model solves this problem.

[0023] The gas vaporized from the gas source material in the existing "non-explosive phase-change gas blasting" device is difficult to instantly reach a pressure of more than hundreds of MPa that can crack rocks like explosive gas, and cannot be used in sections. Therefore, it is difficult to be applied on a large scale in tunnel excavation and underground mine tunnel excavation projects. The present utility model solves this problem, making it possible to apply the "non-explosive phase-change gas blasting" device on a large scale in tunnel excavation and underground mine tunnel excavation projects.

[0024] The existing "non-explosive phase-change gas blasting" heating tubes cannot be used in sections like electric detonators to detonate explosives. This results in the existing "non-explosive phase-change gas blasting" devices being unable to be networked and blasted like explosives at the construction site, which greatly hinders the application and promotion of "non-explosive phase-change gas blasting". The utility model solves this problem. BRIEF DESCRIPTION OF THE DRAWINGS

[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] Figure 1 This is a structural diagram of a gas explosion heating tube with a heating agent container made of metal material in the utility model;

[0027] Figure 2 This is a structural diagram of a blast hole as a fracturing device for a dry ice container in the prior art;

[0028] Figure 3 This is a structural diagram of the heating tube body and igniter of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the first type of igniter of the utility model;

[0030] Figure 5 This is a structural diagram of the second type of igniter of the present utility model;. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0032] The heating tube of the utility model adopts a metal material to make a heating agent container. After the heating agent is ignited, it must be fully burned so that the temperature in the heating tube reaches above the melting point of the metal material serving as the heating agent container before the heating agent container of the heating tube can be burned. Under this premise, the burning heating agent can come into contact with the gas source material in the "non-explosive phase-change gas blasting" device, thereby creatively achieving the purpose of the heating agent coming into contact with the gas source material only after it is fully burned. The gas generated by the gasification of the gas source material in the "non-explosive phase-change gas blasting" device can creatively reach a pressure of more than hundreds of MPa that can crack rocks, just like the gas generated by the explosion of explosives, so that the non-explosive phase-change gas blasting device can use water as the gas source material.

[0033] The burning point of paper is between 180 degrees and 230 degrees, and the tensile strength is about 9 MPa; the melting point of PVC is between 390 degrees and 570 degrees, and the tensile strength is about 62 MPa; the melting point of aluminum is 660 degrees, and the tensile strength is greater than 500 MPa; the melting point of iron is 1538 degrees. The tensile strength is between 370-840 MPa; the melting point of steel is between 1400 degrees and 1600 degrees, and the tensile strength reaches more than 1000 MPa; the melting point of copper is 1083 degrees, and the tensile strength is between 200-300 MPa; from the above data, in order to achieve the purpose of fully burning the exothermic agent in the "non-explosive phase change gas blasting" heating tube and then contacting the gas source material in the "non-explosive phase change gas blasting" device, it is currently difficult to use paper and PVC non-metallic materials to make exothermic agent containers from the perspective of material properties and economy. Therefore, the present invention uses the best but not limited to iron, steel, aluminum, copper and other metal materials to make the container of the exothermic agent of the "non-explosive phase change gas blasting" heater. From the two indicators of melting point and tensile strength, using metal materials to make the exothermic agent container of the "non-explosive phase change gas blasting" heating tube can achieve the purpose of the utility model.

[0034] See Figure 1 As shown, the utility model provides a gas explosion heating tube with a heating agent container made of metal material, comprising a heating tube body 1 and an igniter 2 for segmented network ignition;

[0035] See Figure 3 As shown, the utility model provides a "non-explosive phase change gas blasting" heating tube that uses a heat-generating agent container made of metal material and can be used for segmented network ignition. It consists of a heating tube body 1 and an igniter 2. The heating tube body 1 contains a heat-generating agent, which is responsible for generating heat, and the igniter 2 contains an ignition agent, which is responsible for ignition. Such a structure greatly improves safety while providing the prerequisite for segmented network ignition. The heat-generating agent container 11 of the heating tube body 1 is closed, and is preferably but not limited to being made of metal materials such as iron, steel, aluminum, and copper, and its wall thickness is determined according to product requirements; the heat-generating agent container 11 contains a heat-generating agent 12, and an empty capillary 13 (preferably but not limited to PVC material) is arranged in the middle of the heat-generating agent container 11. The PVC empty capillary 13 is used to insert the igniter 2. The diameter of the capillary of the igniter 2 must be smaller than the diameter of the empty capillary 13 arranged in the middle of the heat-generating agent container 11 to ensure that the igniter 2 can be inserted into the heating tube body 1. The detonation circuit connected to the ignition head 23 or the electronic control module 25 in the igniter 2 passes through the "non-explosive phase change gas blasting" device and the sealing material of the blasting hole and is connected to the external detonation device.

[0036] See Figure 4 As shown, the present invention provides a first-of-its-kind igniter for segmented ignition using a "non-explosive phase-change gas blasting" heating tube igniter 2 made of a metal heating agent container and capable of segmented networking for ignition. This igniter uses a delay agent to achieve time delay, similar to traditional electric detonators. The 2-N segmented igniter 2 includes a loading tube 21 with closed ends (preferably, but not limited to, PVC), a delay agent 24 within the loading tube 21 (preferably, but not limited to, installed in the middle of the loading tube 21), an ignition head 23 within the delay agent, and an ignition agent 22 within the loading tube 21.

[0037] The delay charge 24 is an ignition agent that burns at a predetermined time. In the igniter 2 of the present invention, when the external detonator is energized, the ignition head 23 ignites first. The energy generated triggers the combustion of the delay charge 24, which then burns at a relatively steady rate. After a period of time, the resulting flame or high-temperature gas ignites the ignition agent 22 in the igniter 2 of the present invention.

[0038] Note that there is no delay charge in the first-segment igniter 2 of the present invention, and the ignition head 23 is in direct contact with the ignition agent 22. For the delay segment, the igniter 2 is mainly achieved by changing the composition, amount and particle size of the delay charge 24. For example, the ratio of the oxidizer and the reductant in the delay charge 24 is adjusted, and the material combination with different combustion speeds is replaced, so that the igniter of the present invention can achieve millisecond-level delayed ignition. The delay time can be divided into multiple segments, such as 13 segments, 20 segments, etc., ranging from tens of milliseconds to hundreds of milliseconds, which can meet the fine requirements of different blasting projects for the explosion time difference.

[0039] See Figure 5 As shown, the utility model provides a second igniter for segmented ignition of a "non-explosive phase change gas blasting" heating tube using a metal material as a heating agent container and capable of segmented networking for ignition, comprising a loading tube 21 closed at both ends (optimally but not limited to using PVC material), an electronic control module 25 in a thin tube (optimally but not limited to being installed in the middle of the loading tube 21), and an ignition agent 22 in a thin tube. The igniter achieves delay through an electronic control module like an electronic detonator, and the electronic module has a built-in microprocessor, capacitor, ignition element, etc.

[0040] In the igniter 2 of the present invention, after the external detonator of the igniter 2 is powered on, the external detonator first sends a detonation signal to the electronic control module 25, which receives and processes the signal. Within a predetermined time, the capacitor discharges, activating the ignition element, causing the ignition agent 22 in the igniter 2 of the present invention to ignite and burn. The electronic control module 25 can achieve ignition with microsecond precision, effectively controlling the blasting effect in large-scale blasting, reducing vibration and flying rocks, and can add functions such as identity recognition and communication encryption to prevent illegal detonation.

[0041] The utility model discloses a "non-explosive phase change gas blasting" heating tube which uses a metal material to make a heating agent container and can be used for segmented networking and ignition. When used in conjunction with an existing "non-explosive phase change gas blasting" device, water can be used as a gas source material. The installation method of the gas source material water in the "non-explosive phase change gas blasting" device is determined according to needs.

[0042] The utility model discloses a "non-explosive phase change gas blasting" heating tube which uses a metal material to make a heating agent container and can be used for segmented networking and ignition. When used in conjunction with an existing "non-explosive phase change gas blasting" device, it can be networked for blasting. The specific networking method is arranged according to the needs of the engineering site.

[0043] The utility model discloses a "non-explosive phase change gas blasting" heating tube which uses a heating agent container made of metal material and can be used for segmented networking and ignition. When used in conjunction with an existing "non-explosive phase change gas blasting" device, it can be widely used in tunnel excavation and underground mine tunnel excavation projects just like using explosives. The specific method of use is arranged according to the needs of the project site.

[0044] The utility model discloses a "non-explosive phase change gas blasting" heating tube igniter 2 that uses a metal material to make a heating agent container and can be used for segmented networking ignition. Specifically, the delay charge 24 can be a red lead-ferrosilicon series delay charge, a boron series delay charge, a tungsten series delay charge, etc. The specific configuration method is determined according to needs.

[0045] Compared with the prior art, the utility model has the following advantages:

[0046] The existing "non-explosive phase-change gas blasting" device cannot use water as a gas source material. The utility model enables the "non-explosive phase-change gas blasting" device to use water as a gas source material.

[0047] The utility model solves the problem that in the existing fracturing device using a blast hole as a dry ice container, when a "non-explosive phase change gas blasting" project is carried out, the heating agent still burns in large quantities when the rock has been cracked, emitting huge flames, thereby reducing huge waste and eliminating safety hazards.

[0048] In engineering practice, the existing "non-explosive phase-change gas blasting" device is difficult to crack the rock when encountering cracked rock. The utility model solves this problem.

[0049] The gas generated by the gas source material in existing "non-explosive phase-change gas blasting" devices cannot instantly reach the pressure of hundreds of megapascals or more required to fracture rock, as explosive gas can, and cannot be used in stages, making large-scale application in tunneling and underground mine tunneling projects difficult. The present utility model solves this problem, making large-scale application of "non-explosive phase-change gas blasting" devices in tunneling and underground mine tunneling projects a reality.

[0050] Existing heating tubes for "non-explosive phase-change gas blasting" cannot be used in sections like electric detonators to detonate explosives. This makes it impossible to network and blast these devices at construction sites like explosives, which greatly hinders the application and promotion of "non-explosive phase-change gas blasting." The present utility model solves this problem.

[0051] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various changes or modifications within the scope of the appended claims. As long as they do not exceed the scope of protection described by the claims of the present invention, they should be within the scope of protection of the present invention.

Claims

1. A gas explosion heating tube with a heating agent container made of metal material, characterized by: It includes a heating tube body with a heating agent container made of metal material and an igniter for segmented networking ignition; the heating tube body includes a heating agent container, which is a cylindrical metal structure filled with heating agent; the igniter is inserted into the heating agent container.

2. The gas explosion heating tube with a heating agent container made of metal material according to claim 1, characterized in that: The heating agent container is a closed cylindrical structure, wherein a hollow capillary tube with an open upper end is provided in the middle thereof, and the hollow capillary tube is used for inserting an igniter.

3. The gas explosion heating tube with a heating agent container made of metal material according to claim 1, characterized in that: The material structure of the heating agent container is any one of iron, aluminum, steel and copper.

4. The gas explosion heating tube with a heating agent container made of metal material according to claim 2, characterized in that: The igniter comprises a filling tube filled with ignition agent, and one end of the filling tube is connected to an ignition head or an electronic control module.

5. The gas explosion heating tube with a heating agent container made of metal material according to claim 4, characterized in that: The diameter of the filling tube is smaller than the diameter of the empty capillary tube.

6. The gas explosion heating tube with a heating agent container made of metal material according to claim 5, characterized in that: Any one of a delay charge and an electronic control module is arranged in the filling tube, and both can be used for segmented networking ignition.

7. The gas explosion heating tube with a heating agent container made of metal material according to claim 6, characterized in that: The filling tube and the empty capillary tube are made of PVC material.

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