Synchronous inflation method and synchronous inflation system for multiple blasting devices

Abstract

The invention belongs to the technical field of gas blasting devices, and provides a synchronous inflation method and system for multiple blasting devices, and the method comprises the steps: firstly, dividing a plurality of blasting devices to be inflated into a plurality of groups according to the inflation volume required by each blasting device; then, the grouped blasting devices are connected to all branches in series according to the symmetric distribution principle; wherein one or more groups of blasting devices with the front inflation volume are distributed in the middle position; and finally, the same inflator is used for inflating all the blasting devices to be inflated through all the branches. Blasting devices with high requirements are placed in the middle positions of the branches, and other blasting devices are symmetrically distributed according to the same-level branches, so that the air supply amount and the air pressure in the branches reach the uniform state as much as possible, the inflation stability is improved, and the inflation efficiency and the inflation quality are guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of gas explosion devices, and particularly relates to a method and system for synchronously charging multiple explosion devices. Background Technology

[0002] Traditional gas blasting devices typically use a gas filling machine connected to a Dewar canister, with oxygen filling done through a vacuum gas delivery pipe, which is inefficient and cannot meet the needs of large-scale or intensive blasting projects.

[0003] To address the low efficiency of single-unit, single-pipe oxygenation, multiple pipes are connected in parallel for single-unit, multi-pipe inflation, which improves inflation efficiency. In practice, different blasting devices (inflatable blasting tubes) require varying inflation volumes due to differences in operating location and required blasting intensity. Although flow meters and valves are installed on the corresponding pipes to control the inflation volume, the varying inflation volume requirements cause instantaneous pressure changes in each branch, resulting in significant differences in gas supply capacity within different areas or branches. This affects inflation stability. For example, when several blasting devices with high inflation volume requirements are placed adjacent to each other, the demand and supply pressure on the corresponding branch are higher at the moment of inflation, causing gas to flow preferentially to that branch, resulting in insufficient gas supply and pressure on other branches, affecting the overall inflation system stability. Furthermore, current inflation methods involve complex interfaces, time-consuming connection and disassembly, the risk of gas leakage, and cumbersome operations, impacting overall construction progress and safety. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a method and system for synchronously inflating multiple blasting devices. The blasting devices, after being grouped, are connected in series to each branch according to a symmetrical distribution principle. One or more groups of blasting devices with higher inflation volumes are positioned in the middle. Using the same inflator, all blasting devices are inflated through each branch. Blasting devices with higher inflation requirements are placed in the middle of each branch, while others are symmetrically distributed according to their respective levels of branches. This ensures that the air supply and pressure within each branch are as uniform as possible, improving inflation stability and guaranteeing inflation efficiency and quality.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a method for synchronously charging multiple blasting devices, employing the following technical solution: A method for synchronously charging multiple blasting devices includes: According to the required inflation volume of each blasting device, the multiple blasting devices to be inflated are divided into multiple groups. The grouped explosive devices are connected in series to each branch according to the principle of symmetrical distribution; among them, the group or multiple explosive devices with the highest inflation volume are distributed in the middle position. Using the same inflator, all blasting devices to be inflated are inflated through each branch.

[0006] Furthermore, the multiple blasting devices are divided into three groups according to the required inflation volume; the number of blasting devices with the highest required inflation volume is designated as the first blasting device group, and the remaining blasting devices are divided into two groups, designated as the second blasting device groups, with the total required inflation volume of the two second blasting device groups being equal; the first blasting device group is positioned in the middle of all branches.

[0007] Furthermore, the main outlet of the air compressor is positioned in the middle of all the branch lines.

[0008] Furthermore, within the first blasting device group, the blasting device with the highest gas demand is connected to the branch in the middle position, and they are symmetrically distributed to both sides according to the distribution pattern of the blasting device gas demand continuously decreasing.

[0009] Furthermore, within the second blasting device group, the blasting device with the highest gas demand is connected to the branch near the middle position, and distributed to both sides according to the distribution pattern of the blasting device gas demand continuously decreasing.

[0010] To achieve the above objectives, in a second aspect, the present invention also provides a synchronous gas-charging system for multiple blasting devices, employing the following technical solution: A multi-explosive device synchronous inflation system is disclosed. When the system is in operation, it performs the multi-explosive device synchronous inflation method as described in the first aspect. The system includes an inflation machine and multiple explosive devices detachably connected to the inflation machine via multiple branches. The branches and explosive devices are connected via connectors.

[0011] Furthermore, a flow meter and a control valve are installed on the branch line.

[0012] Furthermore, the connector includes a male connector and a female connector connected to the male connector.

[0013] Furthermore, the connector includes a male connector and a female connector connected to the male connector; the female connector is provided with a spiral groove; the female connector is provided with a first step portion and a second step portion, a first sealing ring is provided at the first step portion, and a slot is provided at the connection between the first step portion and the second step portion; a connecting sleeve is fitted onto the male connector, and a protrusion that mates with the spiral groove is provided on the inner side of the connecting sleeve; a claw that mates with the slot is provided at the end of the male connector; a limiting plate is provided on the connecting sleeve, and an elastic element provided on the male connector interacts with the limiting plate.

[0014] Furthermore, both sides of the claw are provided with arc-shaped chamfers.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention first divides multiple blasting devices into groups according to their required inflation volume. Then, the grouped blasting devices are connected in series to each branch according to a symmetrical distribution principle. The group or multiple groups of blasting devices with higher inflation volumes are located in the middle. Finally, the same inflation machine is used to inflate all the blasting devices through each branch. The blasting devices with higher inflation requirements are placed in the middle of each branch, while the others are symmetrically distributed according to the same level of branches, so that the air supply and pressure in each branch are as uniform as possible, improving inflation stability and ensuring inflation efficiency and quality.

[0016] 2. This invention, through the design of the connector, enables quick insertion and removal operations with one hand or simple tools, significantly shortening the connection time. The snap-fit ​​structure, composed of a sleeve, ball bearings, and grooves, ensures a secure and reliable connection, preventing accidental detachment. Attached Figure Description

[0017] The accompanying drawings, which form part of this embodiment, are used to provide a further understanding of this embodiment. The illustrative embodiments and their descriptions are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0018] Figure 1 This is a flowchart of the method in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the inflation system of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the ignition point layout in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the flow meter according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the connector structure of Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the female head structure in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the spiral groove structure of Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the chuck claw in Embodiment 1 of the present invention; Among them, 1. Inflator; 2. Blasting device; 201. First blasting device group; 202. Second blasting device group; 203. First ignition point; 204. Second ignition point; 205. Third ignition point; 206. Fourth ignition point; 301. Flow meter; 302. Control valve; 3. Branch; 4. Connector; 401. Female connector; 4011. Spiral groove; 4012. First sealing ring; 4013. First step; 4014. Second step; 4015. Slot; 402. Male connector; 4021. Connecting sleeve; 4022. Protrusion; 4023. Elastic element; 4024. Second sealing ring; 4025. Claw. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] Traditional gas blasting devices typically use a gas filling machine connected to a Dewar canister, with oxygen filling done through a vacuum gas delivery pipe, which is inefficient and cannot meet the needs of large-scale or intensive blasting projects.

[0022] To address the low efficiency of single-unit, single-pipe oxygenation, multiple pipes are connected in parallel for single-unit, multi-pipe inflation, which improves inflation efficiency. In practice, different blasting devices (inflatable blasting tubes) require different inflation volumes due to varying operating locations and required blasting degrees. Although flow meters and valves are installed on the corresponding pipelines to control the inflation volume, the varying inflation volume requirements cause instantaneous pressure changes in each branch, resulting in significant differences in the gas supply capacity of different areas or branches, thus affecting the stability of inflation.

[0023] In addition, the existing filling process has complex interfaces, takes a long time to connect and disconnect, poses a risk of gas leakage, and is cumbersome to operate, affecting the overall construction progress and safety.

[0024] To solve at least one of the above problems, such as Figure 1 As shown, in some embodiments, a method for synchronously charging multiple blasting devices is provided, including: S1. Divide multiple blasting devices into multiple groups according to the required inflation volume of each blasting device. S2. Connect the grouped blasting devices in series to each branch according to the principle of symmetrical distribution; among them, the group or more blasting devices with the highest inflation volume are distributed in the middle position. S3. Using the same inflator, inflate all the blasting devices to be inflated through each branch.

[0025] First, based on the required inflation volume of each blasting device, the multiple blasting devices to be inflated are divided into several groups. Then, the grouped blasting devices are connected in series to each branch according to the principle of symmetrical distribution. Among them, the group or multiple groups of blasting devices with higher inflation volumes are distributed in the middle position. Finally, using the same inflation machine, all the blasting devices to be inflated are inflated through each branch. The blasting devices with higher inflation requirements are placed in the middle position of each branch, and the others are distributed symmetrically according to the same level of branches, so that the air supply and air pressure in each branch are as uniform as possible, improving inflation stability and ensuring inflation efficiency and quality.

[0026] Optionally, the multiple blasting devices 2 are divided into three groups according to the required inflation volume; optionally, the preset number of blasting devices with the required inflation volume are designated as the first blasting device group 201, and the remaining blasting devices are divided into two groups, designated as the second blasting device groups 202, with the total required inflation volume of the two second blasting device groups 202 being equal or similar; the first blasting device group 201 is positioned in the middle of all branches 3, so that at the moment of inflation, the gas demand in the middle position is the largest, and the gas demand on both sides is smaller, so that the gas supply in the branches 3 on both sides is balanced, ensuring overall stability.

[0027] To meet the inflation demand in the middle position, the main outlet of the inflation machine 1 is set in the middle position of all branches 3; the gas entering the main pipe is given priority to the first blasting device group 201 with the largest demand, which ensures inflation; then the gas is distributed to the areas with smaller gas demand on both sides, which can meet the gas supply demand of the remaining branches and ensure the overall gas supply stability.

[0028] Similarly, within the first blasting device group 201, the blasting device with the highest gas demand is connected to the branch 3 in the middle position, and distributed symmetrically to both sides according to the distribution pattern of the gas demand of the blasting devices continuously decreasing; so that the gas supply and gas pressure in each branch connected to the first blasting device group 201 are as uniform as possible, improving the gas filling stability and ensuring the gas filling efficiency and quality.

[0029] Within the second blasting device group 202, the blasting device with the highest gas demand is connected to the branch 3 located near the center. The blasting devices 2 are distributed to both sides according to the decreasing gas demand distribution pattern. This ensures that the blasting device 2 with the lowest gas demand is located at the farthest end of the main pipe, guaranteeing gas supply to all branches corresponding to the blasting devices 2. This makes the gas supply and pressure in each branch connected to the second blasting device group 202 as uniform as possible, improving inflation stability and ensuring inflation efficiency and quality.

[0030] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a multi-explosive device synchronous inflation system is also provided. When the system is working, it performs the multi-explosive device synchronous inflation method as described above. The system includes an inflation machine 1 and multiple explosive devices 2 detachably connected to the inflation machine 1 via multiple branches 3. The branches 3 are connected to the explosive devices 2 via connectors 4.

[0031] The air compressor 1 can be a multi-channel oxygenation unit; the air compressor 1 is designed with multiple independent oxygenation output ports, each port is equipped with an independent branch 3, and the branch 3 is equipped with a control valve 302 and a flow meter 301. The air compressor 1 can be connected to multiple gas blasting devices 2 simultaneously for oxygenation operations, realizing a "one-to-many" parallel filling mode, which improves construction efficiency and is particularly suitable for large-scale blasting operations.

[0032] like Figure 4 As shown, the branch 3 is equipped with a flow meter 301 and a control valve 302, which can monitor the inflation status in real time and detect the quality of the gas explosion device 2, and promptly detect substandard products.

[0033] like Figures 5-8 As shown, the connector 4 includes a female connector 401 and a male connector 402 that can be plugged into each other. The female connector 401 includes a spiral groove 4011, a first sealing ring 4012, a first stepped portion 4013, a second stepped portion 4014, and a retaining groove 4015; the male connector 402 includes a connecting sleeve 4021, a protrusion 4022, an elastic element 4023, a second sealing ring 4024, and a retaining claw 4025.

[0034] The female connector 401 is provided with a spiral groove 4011 for engagement with the protrusion 4021. The female connector 401 is provided with a first stepped portion 4013 and a second stepped portion 4014. A first sealing ring 4012 is provided at the first stepped portion 4013. The first sealing ring 4012 is a U-shaped elastic ring with a certain elasticity to accommodate the insertion of the male connector 402. The diameter of the second stepped portion 4014 is smaller than the diameter of the first stepped portion 4013. A groove 4015 is provided at the connection between the first stepped portion 4013 and the second stepped portion 4014.

[0035] The male head 402 is fitted with a connecting sleeve 4021, which is freely disposed in both the axial and circumferential directions. The inner side of the connecting sleeve 4021 is provided with a protrusion 4022 that cooperates with the spiral groove 4011. When inserted, the connecting sleeve 4021 rotates, and the protrusion engages with the spiral groove 4011 to achieve connection.

[0036] The male connector 402 is provided with a claw 4025 that mates with the slot 4015. The claw 4025 is an elastic claw. During insertion, a stable and quick connection is achieved through the slot 4015 and the claw 4025.

[0037] A limiting plate is provided on the connecting sleeve 4021. An elastic element 4023 provided on the male head 402 interacts with the limiting plate. After the connecting sleeve 4021 and the female head 401 are engaged, the elastic element 4023 stores energy, improving the stability of the engagement between the connecting sleeve 4021 and the female head 401. The elastic element 4023 can be a spring.

[0038] The second sealing ring 4024 is made of elastic material. The second sealing ring 4024 can be set independently or it can be set on the second sealing ring 4024. The second sealing ring 4024 extends out of the end of the male head 402 and is located at the connection between the claw 4025 and the groove 4015 to improve the sealing performance.

[0039] Optionally, the clamp 4025 adopts a split independent clamp (4-lobed type), with each clamp lobe made of spring steel. Both sides of the clamp 4025 are provided with arc-shaped chamfers to facilitate the insertion and disengagement of the female connector 401 and the male connector 402. In addition, when the system pressure rises abnormally, the hydraulic pressure pushes the clamp 4025 to expand slightly outward, realizing automatic pressure relief and preventing pipe bursting.

[0040] Optionally, the second sealing ring 4024 is a polytetrafluoroethylene (PTFE) retainer ring, followed by an elastic element 4023. This design allows the seal to float ±1.5mm in the axial direction, compensating for displacement caused by thermal expansion and contraction or vibration of the pipeline, and avoiding separation of the sealing surface caused by rigid connection.

[0041] The first sealing ring 4012 is a U-shaped lip sealing ring, which is installed on the female end. Its special geometry causes the lip to produce a self-tightening effect under pressure. The higher the system pressure, the stronger the contact force between the lip and the sealing surface of the male end.

[0042] The blasting device 2 has multiple ignition points evenly distributed circumferentially within it. Optionally, a first ignition point 203, a second ignition point 204, a third ignition point 205, and a fourth ignition point 206 may be arranged circumferentially within the blasting device 2. Figure 3 As shown, the blasting device 2 can be divided into several equal parts, in this embodiment into four regions: A, B, C, and D, each with an ignition point. Micro-delay blasting or simultaneous blasting is performed under program control. It is suitable for applications requiring the one-time breaking of large volumes of ultra-hard rock (such as rock anchor beams, hard rock tunnel faces, and hard rock foundation pits), effectively overcoming over- and under-excavation problems. The energy release method is more conducive to the directional fracturing and breaking of rock, reducing ineffective energy loss.

[0043] The aforementioned multi-blasting device synchronous gas charging system is a high-efficiency gas blasting device system suitable for rock excavation, demolition, and other engineering projects. It is particularly suitable for scenarios with high requirements for blasting efficiency, safety, and controllability, such as rock anchor beam slotting, hard rock tunnel excavation, and hard rock foundation pit excavation. It solves key problems such as improving oxygen charging efficiency through multi-pipe parallel oxygen charging, enhancing safety through intelligent leak detection and quick-connect couplings, and increasing blasting power through multi-point ignition.

[0044] One of the working processes of the multi-explosive device synchronous gas charging system is as follows: The air inlets of multiple blasting devices 2 are connected in parallel to the branch 3 of the corresponding output port of the air compressor 1 via connectors 4.

[0045] Start the gas press 1 and simultaneously fill all connected blasting devices 2 with liquid oxygen.

[0046] After filling is completed, the connection between the inflator 1 and the blasting device 2 is safely and quickly disconnected through connector 4.

[0047] Insert the filled explosive device 2 into the blast hole.

[0048] Install a quick-plugging device.

[0049] The detonation is initiated by igniting the detonation point of the fracture tube according to the required explosive force.

[0050] The method and system of this invention significantly improve construction efficiency: parallel oxygenation reduces filling time to 1 / N of the original (N being the number of parallel connections), significantly shortening the overall blasting operation cycle. Operational safety is significantly enhanced: the self-sealing and anti-misoperation design of connector 4 effectively avoids the risks of gas leakage and loose connections. Blasting power is effectively increased: the internal partition design of the gas blasting device 2, with each partition having an ignition point, allows for multi-partition combined blasting, easily handling ultra-hard rock masses and reducing the number of holes and blasts. Operation is convenient and labor-saving: connector 4 simplifies the connection steps, reduces labor intensity, and improves human-machine efficiency. It has a wide range of applications: particularly suitable for engineering scenarios with extremely high requirements for efficiency, safety, and blasting power, such as rock anchor beams, hard rock tunnels, and hard rock foundation pits. It is cost-effective: the increased efficiency and reduced number of blasts result in significant savings in labor, time, and equipment costs.

[0051] The above description is merely a preferred embodiment of this practice and is not intended to limit the scope of this practice. Various modifications and variations can be made to this practice by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this practice should be included within the protection scope of this practice.

Claims

1. A method for synchronously charging multiple blasting devices, characterized in that, include: According to the required inflation volume of each blasting device, the multiple blasting devices to be inflated are divided into multiple groups. The grouped explosive devices are connected in series to each branch according to the principle of symmetrical distribution; among them, the group or multiple explosive devices with the highest inflation volume are distributed in the middle position. Using the same inflator, all blasting devices to be inflated are inflated through each branch.

2. The method for synchronously charging multiple blasting devices as described in claim 1, characterized in that, Multiple blasting devices are divided into three groups according to the required inflation volume; the number of blasting devices with the highest required inflation volume is designated as the first blasting device group, and the remaining blasting devices are divided into two groups, designated as the second blasting device groups, with the total required inflation volume of the two second blasting device groups being equal; the first blasting device group is positioned in the middle of all branches.

3. The method for synchronously charging multiple blasting devices as described in claim 2, characterized in that, The main outlet of the air compressor is located in the middle of all the branch lines.

4. The method for synchronously charging multiple blasting devices as described in claim 2, characterized in that, Within the first blasting device group, the blasting device with the highest gas demand is connected to the branch in the middle position, and the devices are symmetrically distributed to both sides according to the distribution pattern of continuously decreasing gas demand of the blasting devices.

5. The method for synchronously charging multiple blasting devices as described in claim 2, characterized in that, Within the second blasting device group, the blasting device with the highest gas demand is connected to the branch near the middle position, and distributed to both sides according to the distribution pattern of the blasting device gas demand continuously decreasing.

6. A synchronous gas-charging system for multiple blasting devices, characterized in that, When the system is in operation, it performs the method for synchronous inflation of multiple explosive devices as described in any one of claims 1-5. The system includes an inflation machine and multiple explosive devices detachably connected to the inflation machine via multiple branches. The branch circuit is connected to the blasting device via a connector.

7. The synchronous gas-charging system for multiple blasting devices as described in claim 6, characterized in that, A flow meter and a control valve are installed on the branch line.

8. The synchronous gas-charging system for multiple blasting devices as described in claim 6, characterized in that, The connector includes a male connector and a female connector connected to the male connector; the female connector is provided with a spiral groove; the female connector is provided with a first stepped portion and a second stepped portion, a first sealing ring is provided at the first stepped portion, and a slot is provided at the connection between the first stepped portion and the second stepped portion; a connecting sleeve is fitted onto the male connector, and a protrusion that mates with the spiral groove is provided on the inner side of the connecting sleeve; a claw that mates with the slot is provided at the end of the male connector; a limiting plate is provided on the connecting sleeve, and an elastic element provided on the male connector interacts with the limiting plate.

9. A synchronous gas-charging system for multiple blasting devices as described in claim 8, characterized in that, Both sides of the chuck are provided with arc-shaped chamfers.

10. A synchronous gas-charging system for multiple blasting devices as described in claim 6, characterized in that, The blasting device has multiple ignition points evenly distributed circumferentially inside.

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