A blasting device and a blasting method for filling liquid carbon dioxide and blasting

Abstract

The embodiment of the present application discloses a blasting device and method for filling liquid carbon dioxide and blasting, relates to the field of carbon dioxide blasting, avoids the situation that the initiating tube filled with chemical agents may be triggered in advance during transportation and storage, and the blasting device comprises a blasting tube, which is hollow and tubular and is used for containing filled liquid carbon dioxide; a first plugging piece is plugged at the first end of the blasting tube; an electric heating piece is arranged in the blasting tube, the first end of the electric heating piece is connected with the first end of a first wire, and the second end of the electric heating piece is connected with the first end of a second wire; an electric blasting element is arranged in the blasting tube, the first end of the electric blasting element is connected with the first end of a third wire, and the second end of the electric blasting element is connected with the first end of a fourth wire; and a second plugging piece is plugged at the second end of the blasting tube. The embodiment of the present application is suitable for the scene of blasting work.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide blasting, and more specifically to a blasting device and blasting method for filling and detonating liquid carbon dioxide. Background Technology

[0002] With the development of science and technology, most existing carbon dioxide blasting technologies employ chemical thermal excitation, while a few use electrical pulse excitation. When using an excitation tube with potassium perchlorate as the main component and a relatively large confining pressure, premature triggering may occur due to accidental effects such as friction and static electricity, causing equipment damage or affecting the safety of blasting personnel, posing a certain degree of danger. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a blasting device and blasting method for filling and detonating liquid carbon dioxide, which can use all-electric excitation to replace chemical excitation, more accurately control the release time of the blast, and improve the safety during blasting.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a blasting device for filling and detonating liquid carbon dioxide, the blasting device comprising: a blasting tube, which is hollow and tubular, for containing the filled liquid carbon dioxide; a first sealing member, sealing a first end of the blasting tube; an electric heating element disposed within the blasting tube, the first end of the electric heating element being connected to a first end of a first wire, and the second end of the electric heating element being connected to a first end of a second wire; the second ends of the first wire and the second wire respectively protruding from the first sealing member for connection to a power supply device; and an electric detonating element disposed within the blasting tube. The first end of the detonating tube is connected to the first end of the third wire, and the second end of the detonating element is connected to the first end of the fourth wire. The second ends of the third wire and the fourth wire respectively pass through the first sealing member and are used to connect to the electric excitation device. The second sealing member has a protrusion at the center of its surface facing the inside of the detonating tube. The second sealing member seals the second end of the detonating tube and is used to open the second end of the detonating tube after the liquid carbon dioxide inside the detonating tube is heated and detonated by the detonating element.

[0006] Optionally, the electric heating element is a heating wire, which is arranged along the length of the detonating tube.

[0007] Optionally, the electro-explosive element is an electro-explosive wire.

[0008] Optionally, the power supply device is an adjustable power supply.

[0009] Optionally, the electro-excitation device includes a fixed power supply, a resistor, a capacitor, a first switch, and a second switch; when the first switch is turned on and the second switch is turned off, the fixed power supply, capacitor, and resistor form a charging circuit; when the second switch is turned on and the first switch is turned off, the capacitor and electro-exploding wire form a discharging circuit.

[0010] Optionally, it also includes: a pressure sensor disposed in the detonating tube and a pressure display disposed outside the detonating tube, the pressure display being electrically connected to the pressure sensor.

[0011] Optionally, the outer side of the second sealing member is tightly fitted to the inner side of the wall of the blasting tube, and the second sealing member can move along the axial direction of the blasting tube when subjected to force.

[0012] Secondly, embodiments of the present invention also provide a blasting method based on liquid carbon dioxide, comprising:

[0013] Optionally, liquid carbon dioxide is filled into the detonating tube of the blasting device, and then the filling is stopped and the detonating tube is sealed after the liquid carbon dioxide has filled the entire detonating tube.

[0014] Optionally, the blasting device may be placed into a pre-drilled blast hole;

[0015] Optionally, the second end of the first wire connected to the electric heating element and the second end of the second wire connected to the electric heating element are connected to the power supply device, and the second end of the third wire connected to the electric explosion element and the second end of the fourth wire connected to the electric explosion element are connected to the electric excitation device.

[0016] Optionally, when the liquid carbon dioxide in the detonating tube is heated and detonated by the electro-explosive element, the second sealing element installed at the bottom of the detonating tube bursts out, and the carbon dioxide gas and energy are released from the bottom of the detonating tube, thereby realizing the ignition and explosion of the liquid carbon dioxide.

[0017] This invention provides a blasting device and method for filling and detonating liquid carbon dioxide. The hollow region of the tubular structure of the detonating tube is used to contain the liquid carbon dioxide. A first sealing element is installed at the first end of the detonating tube. An electric heating element is disposed inside the detonating tube, with its two ends passing through the first sealing element via wires. The electric heating element can heat the liquid carbon dioxide. An electric detonating element is disposed inside the detonating tube, near the first end. The electric detonating element can detonate after the liquid carbon dioxide is heated and vaporized. A second sealing element is installed at the second end of the detonating tube, and a protrusion is provided at the center of the inner surface of the second sealing element. This protrusion can pop out when the carbon dioxide inside the detonating tube is detonated, completing the energy release within the detonating tube. This method uses all-electric excitation instead of chemical excitation, allowing for more precise control of the detonation release time and improving safety during blasting. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the structure of a blasting device for filling and detonating liquid carbon dioxide according to an embodiment of the present invention.

[0020] Figure 2 This is a flowchart of a blasting method based on liquid carbon dioxide according to an embodiment of the present invention. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The present invention provides a blasting device for filling and detonating liquid carbon dioxide, which can use all-electric excitation instead of chemical excitation, more precisely control the release time of the blast, and improve the safety during blasting.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] See Figure 1As shown, this embodiment provides a blasting device for filling and detonating liquid carbon dioxide, comprising: a blasting tube 11, which is a hollow tube for containing the filled liquid carbon dioxide; a first sealing member 12, which seals the first end 111 of the blasting tube 11; an electric heating element 13 disposed inside the blasting tube 11, the first end of the electric heating element 13 being connected to the first end of the first wire 101, and the second end of the electric heating element 13 being connected to the first end of the second wire 102; the second ends of the first wire 101 and the second ends of the second wire 102 respectively passing through the first sealing member 12 for connection to a power supply device 14; and an electric detonating element 15 disposed in the blasting tube 11. Inside the tube 11, near the first end of the detonating tube 11, the first end 151 of the electric detonating element 15 is connected to the first end of the third wire 103, and the second end of the electric detonating element is connected to the first end of the fourth wire 104. The second ends of the third wire 103 and the fourth wire 104 respectively pass through the first sealing member 12 and are used to connect to the electric excitation device 16. The second sealing member 17 has a protrusion 171 at the center of its surface facing the inside of the detonating tube 11, which is used to seal the second end of the detonating tube 11 and open the second end of the detonating tube 11 after the liquid carbon dioxide inside the detonating tube 11 is heated and detonated by the electric detonating element.

[0026] The detonating tube 11 is a hollow tubular structure used to contain the filled carbon dioxide. The hollow tubular structure provides support for containing both liquid and gaseous carbon dioxide. A first sealing element 12 seals the first end 111 of the detonating tube 11, which is located near the electrically actuated device 15. An electrically heated element 13 is connected to a power supply device 14 via a first wire 101 and a second wire 102, facilitating the heating of the liquid carbon dioxide and its conversion into gaseous carbon dioxide. The electrically actuated element 15 is positioned near the first end of the detonating tube for better contact with the carbon dioxide. The electrically actuated element 15 is connected to the power supply device 14 via a first wire 101 and a second wire 102. The three wires 103 and the fourth wire 104 are connected to the electric excitation device 16 to facilitate the excitation and explosion of gaseous carbon dioxide. At the same time, the wire connection ensures the stability of the explosion device connection and prevents safety hazards caused by loose connection. The second sealing member 17 has a protrusion 171 at the center of the surface facing the inside of the explosion tube 11. This is so that when carbon dioxide is expelled, the area of ​​the second sealing member 17 close to the tube wall can fully receive the force generated by the explosion, causing the second sealing member to pop out. At the same time, the second sealing member 17 seals the second end of the explosion tube, ensuring that the liquid carbon dioxide in the explosion tube 11 does not leak in the unexcited state.

[0027] The present invention provides a blasting device for filling and detonating liquid carbon dioxide. The hollow area of ​​the tubular structure of the blasting tube is used to contain the liquid carbon dioxide. A first sealing member is installed at the first end of the blasting tube. An electric heating element is installed inside the blasting tube, with both ends of the electric heating element passing through the first sealing member via wires. The electric heating element can heat the liquid carbon dioxide. An electric detonating element is installed inside the blasting tube and can detonate after the liquid carbon dioxide is heated and vaporized. A second sealing member is installed at the second end of the blasting tube and can be ejected when the carbon dioxide inside the blasting tube is detonated, thus completing the energy release inside the blasting tube. Therefore, the all-electric excitation method replaces chemical excitation, allowing for more precise control of the release time of the blast and improving the safety during blasting.

[0028] See Figure 1 In some embodiments, the electric heating element 13 is a heating wire, which is arranged along the length of the detonating tube 11. In this way, when the liquid carbon dioxide in the detonating tube 11 needs to be heated, it can be arranged according to the required length and along the length of the detonating tube 11, so that the heating wire has a sufficient working length, thereby making the contact between the heating wire and the liquid carbon dioxide more sufficient and improving the heating efficiency.

[0029] It should be clarified that when heating liquid carbon dioxide, the liquid carbon dioxide in the detonating tube gradually transforms into gaseous carbon dioxide, the amount of liquid carbon dioxide inside gradually decreases, and the liquid carbon dioxide level gradually drops. In order to heat the liquid carbon dioxide in the detonating tube more fully, the electric heating element is located below the electric detonating element.

[0030] See Figure 1 In some embodiments, the electric detonation element 15 is an electric detonation wire; wherein, the electric detonation wire is small in size and has a filamentous structure, which is simple in structure and easy to install inside the detonating tube 11, thereby saving the cost of use.

[0031] It should be clarified that the first end of the detonating tube is the end of the detonating tube closest to the electrically arousing device; the electrically arousing element is positioned close to the first end of the detonating tube. After carbon dioxide changes from a liquid state to a gaseous state, its density decreases, and it will rise and accumulate in the area above the detonating tube. Positioning the electrically arousing element close to the first end of the detonating tube allows for better contact with the carbon dioxide gas in the upper area.

[0032] See Figure 1 In some embodiments, the power supply device 14 is an adjustable power supply; thus, during the heating process of liquid carbon dioxide, the power of the power supply can be adjusted by limiting the amount of liquid carbon dioxide filled and the heating time, thereby adjusting the current through the heating wire, making it easier for the operator to control the heating time.

[0033] See Figure 1In some embodiments, the electro-excitation device 16 includes a fixed power supply 161, a resistor 162, a capacitor 163, a first switch 164, and a second switch 165. When the first switch 164 is turned on and the second switch 165 is turned off, the fixed power supply 161, capacitor 163, and resistor 162 form a charging circuit. When the second switch 165 is turned on and the first switch 164 is turned off, the capacitor 163 and electrostatic detonator 150 form a discharging circuit. Thus, when capacitor 163 needs to be charged, the first switch 164 is turned on and the second switch 165 is turned off, and the fixed power supply 161 discharges through the third wire 103 and the second switch 165. The connection of the four wires 104 enables the charging of capacitor 163. To prevent excessive current in the charging circuit from damaging the capacitor, a resistor 162 is pre-installed on the third wire 103. When capacitor 163 needs to be discharged, the second switch 165 is turned on and the first switch 164 is turned off. Through the connection of the third wire 103 and the fourth wire 104, capacitor 163 can discharge the detonating wire 150. The first switch 164 and the second switch 165 can control the conduction of the charging and discharging circuit, making it convenient for the operator to switch between the charging and discharging circuits, thereby ensuring the normal operation of the electric excitation device 16.

[0034] See Figure 1 In some embodiments, the outer side of the second sealing member 17 is tightly fitted to the inner side of the wall of the detonating tube. When the second sealing member 17 is subjected to force, it can move along the axial direction of the detonating tube. The material of the second sealing member 17 includes metal. In order to prevent carbon dioxide gas leakage, the outer side of the second sealing member 17 is tightly fitted to the wall of the detonating tube 11 to ensure the airtightness of the detonating tube 11. At the same time, in order to adapt the structure of the detonating tube 11 to the pressure generated by the vaporization of liquid carbon dioxide inside, the second sealing member 17 can move along the axial direction of the detonating tube 11 when subjected to the force of the internal gas.

[0035] See Figure 1 In some embodiments, the blasting device further includes: a pressure sensor (not shown) disposed in the blasting tube 11 and a pressure display (not shown) disposed outside the blasting tube 11, the pressure display being electrically connected to the pressure sensor; thus, the pressure display is mounted on the outer surface of the blasting tube 11, and the pressure sensor can transmit the pressure value it senses to the pressure display through a wire, displaying the pressure value on the pressure display, which allows the operator to determine whether the pressure inside the blasting tube 11 has reached the set value, thereby enabling the operator to more intuitively observe the pressure changes inside the blasting tube 11.

[0036] To improve safety during blasting, the detonating tube is made of special alloy steel, including 42CrMo, which has certain strength, toughness and impact resistance. This allows the detonating tube to be reused after the blasting, thereby reducing blasting costs.

[0037] This embodiment also provides a blasting method based on liquid carbon dioxide, which can be implemented using the above-mentioned blasting device. The method of this embodiment may include the following steps:

[0038] S11. Fill the detonating tube in the blasting device with liquid carbon dioxide, and then stop filling after the liquid carbon dioxide has filled the entire detonating tube and seal the detonating tube.

[0039] S12. Place the blasting device into the pre-drilled blast hole;

[0040] S13. Connect the second end of the first wire connected to the electric heating element and the second end of the second wire connected to the electric heating element to the power supply device, and connect the second end of the third wire connected to the electric explosion element and the second end of the fourth wire connected to the electric explosion element to the electric excitation device.

[0041] S14. When the liquid carbon dioxide in the detonating tube is heated and detonated by the electro-explosive element, the second sealing member installed at the bottom of the detonating tube bursts out, and the carbon dioxide gas and energy are released from the bottom of the detonating tube, thereby realizing the ignition and explosion of the liquid carbon dioxide.

[0042] The blasting method based on liquid carbon dioxide provided in this invention involves filling a detonating tube with liquid carbon dioxide, placing the blasting device into a pre-drilled blast hole, connecting the first and second wires to a power supply device, and connecting the third and fourth wires to an electric excitation device. The liquid carbon dioxide is then heated by an electric heating element and detonated by an electric detonating element. The second sealing element at the bottom of the detonating tube bursts out, releasing the energy within the detonating tube. This method replaces chemical excitation with a fully electric excitation approach, allowing for more precise control of the blast release time and improving safety during blasting.

[0043] The technical features in the method embodiments of this application are the same as or similar to the technical features in the device embodiments, and can be referred to each other in detail. The device is the blasting device described in any of the above embodiments.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0045] The embodiments of the present invention have been described in detail above. Those skilled in the art can design and modify the device and its usage within the scope of the present invention according to the on-site construction conditions.

[0046] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A blasting device for filling and detonating liquid carbon dioxide, characterized in that, The blasting device includes: A bursting tube is a hollow tube used to contain liquid carbon dioxide. The first sealing element is used to seal the first end of the blasting tube. An electric heating element is disposed inside the detonating tube, and the electric heating element is located below the electric detonating element; the first end of the electric heating element is connected to the first end of the first wire, and the second end of the electric heating element is connected to the first end of the second wire; the second ends of the first wire and the second wire respectively protrude from the first sealing member and are used to connect to the power supply device. An electric explosion element is disposed inside the detonating tube and installed near the first end of the detonating tube. The first end of the electric explosion element is connected to the first end of the third wire, and the second end of the electric explosion element is connected to the first end of the fourth wire. The second ends of the third wire and the second ends of the fourth wire respectively protrude from the first sealing member and are used to connect to the electric excitation device. The second sealing element has a protrusion at the center of its surface facing the interior of the detonating tube. The second sealing element seals the second end of the detonating tube and is used to open the second end of the detonating tube after the liquid carbon dioxide inside the detonating tube is heated and detonated by the electric detonating element.

2. The blasting device as described in claim 1, characterized in that, The electric heating element is a heating wire, which is arranged along the length of the detonating tube.

3. The blasting device as described in claim 1, characterized in that, The electro-explosive element is an electro-explosive wire.

4. The blasting device as described in claim 1, characterized in that, The power supply device is an adjustable power supply.

5. The blasting device as described in claim 3, characterized in that, The electro-excitation device includes a fixed power supply, a resistor, a capacitor, a first switch, and a second switch; Turn on the first switch and turn off the second switch. The fixed power supply, capacitor and resistor form a charging circuit. When the second switch is turned on and the first switch is turned off, the capacitor and the detonating wire form a discharge circuit.

6. The blasting device as described in claim 1, characterized in that, Also includes: A pressure sensor is installed in the detonating tube and a pressure display is installed outside the detonating tube, the pressure display being electrically connected to the pressure sensor.

7. The blasting device as described in claim 1, characterized in that, The outer side of the second sealing member is tightly attached to the inner side of the wall of the blasting tube. When the second sealing member is subjected to force, it can move along the axial direction of the blasting tube.

8. A blasting method based on liquid carbon dioxide, characterized in that, include: Liquid carbon dioxide is filled into the detonating tube of the blasting device, and after the liquid carbon dioxide has filled the entire detonating tube, the filling is stopped and the detonating tube is sealed; wherein the blasting device is the blasting device described in any one of claims 1-7. The blasting device is placed into a pre-drilled blast hole; The second end of the first wire connected to the electric heating element and the second end of the second wire connected to the electric heating element are connected to the power supply device, and the second end of the third wire connected to the electric explosion element and the second end of the fourth wire connected to the electric explosion element are connected to the electric excitation device. When the liquid carbon dioxide inside the detonating tube is heated and detonated by the electro-explosive element, the second sealing element installed at the bottom of the detonating tube bursts out, and the carbon dioxide gas and energy are released from the bottom of the detonating tube, thereby realizing the ignition and explosion of the liquid carbon dioxide.

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