Liquefied air low-temperature-resistant insulating biomass adsorption tube and use method thereof

Abstract

The invention provides a liquefied air low-temperature-resistant insulation type biomass adsorption tube and a using method. The liquefied air low-temperature-resistant insulation type biomass adsorption tube comprises a biomass adsorption tube body, a plurality of biomass material blocks are arranged on a fixed cylinder in the biomass adsorption tube body in a sleeving mode, an upper cover is fixedly arranged at the end of the fixed cylinder, and the biomass material blocks and the upper cover are wrapped with a heat shrink tube in a sealed mode; a wire is inserted into the middle of the upper cover, multiple ignition elements are arranged at the end of the wire, and a liquid inlet and an exhaust port are formed in the two sides of the upper cover respectively. Biomass and liquefied air serve as energy carriers, explosive is not needed, and the device has the advantages of being safe, environmentally friendly, low in vibration, high in controllability, low in rock pulverization rate, beneficial to mechanical mining and the like, is suitable for green mining of large surface mines and promotes large-scale application of the liquefied air energy storage technology in multiple scenes.

Description

Technical Field

[0001] This invention relates to the field of rock crushing, specifically to a liquefied air low-temperature resistant insulating biomass adsorption tube and its usage method. Background Technology

[0002] Currently, rock breaking in open-pit mines primarily relies on explosives for blasting operations. This technology uses detonators to ignite explosives, releasing a large amount of energy in a very short time, generating high-temperature, high-pressure gas that breaks the rock. Mechanical breaking technologies, including hydraulic breakers and rock drills, break rocks through physical impact or cutting, and are suitable for small-scale or secondary breaking operations. Other non-explosive rock breaking technologies, such as carbon dioxide fracturing and static fracturing agents (expanded cement), are used as alternatives to explosives in specific scenarios.

[0003] Traditional explosives are classified as easily explosive hazardous chemicals, and their production, transportation, storage, use, and management are subject to strict regulation. Improper handling can easily lead to safety accidents, posing a significant threat to personnel and equipment. Explosive blasting generates strong shock waves and vibrations, easily triggering flying rocks that damage surrounding buildings, facilities, and the ecological environment; it also produces large amounts of harmful gases and dust, polluting the air and failing to meet the requirements for green mine construction.

[0004] Due to the highly dangerous nature of explosives, their use requires a complex approval process and is strictly restricted in densely populated areas, ecologically sensitive areas, or areas surrounding cities, thus hindering normal mine production. The intense and concentrated energy release from explosive blasting can easily lead to excessive rock pulverization, resulting in a low proportion of large blocks and affecting the efficiency of subsequent mechanical mining; it also generates numerous unpredictable fissures, which are detrimental to slope stability.

[0005] Existing rock breaking technologies generally suffer from high safety risks, significant environmental impact, strict regulation, poor crushing effect, or low efficiency. This solution was designed to address these issues, aiming to provide a novel rock breaking solution that is explosive-free, safe, environmentally friendly, energy-controlled, and highly energy-efficient, filling a gap in large-scale green rock breaking technology. Summary of the Invention

[0006] The main objective of this invention is to provide a low-temperature resistant, insulating biomass adsorption tube for liquefied air and its usage method, thereby solving the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: it includes a biomass adsorption tube, a plurality of biomass material blocks are sleeved on a fixed cylinder in the biomass adsorption tube, a top cover is fixed at the end of the fixed cylinder, and heat shrink tubing is sealed and wrapped around the biomass material blocks and the top cover. A wire is inserted through the middle of the top cover, and multiple ignition elements are provided at the ends of the wire. Liquid inlets and vents are provided on both sides of the top cover.

[0008] Preferably, the bottom of the fixed cylinder is fixed with a base plate, the top is a threaded shaft, and there is a hollow between the base plate and the threaded shaft, through which multiple biomass material blocks are fitted.

[0009] Preferably, the outer edge of the top cover is fitted onto the biomass material block, the threaded shaft at the top of the fixed cylinder is threadedly connected to the middle of the top cover, the liquid inlet and the vent are connected to the inside of the fixed cylinder, and multiple ignition elements at the end of the wire are located inside the fixed cylinder.

[0010] Preferably, the top cover is fixed with multiple fixing nails, which are used to connect with cables to lower the biomass adsorption tube into the borehole.

[0011] Preferably, the biomass material block has a central hole in the middle, a boss on the top outer side, and a groove at the bottom of the central hole, with the base plate at the bottom of the fixing cylinder abutting against the groove; Multiple biomass material blocks are stacked and then connected by bosses and grooves to create gaps for liquid flow between them.

[0012] Preferably, the top and bottom periphery of the biomass material block are provided with a connected upper flow slit and a lower flow slit; The upper flow slot passes through the boss, and the lower flow slot connects with the groove.

[0013] Preferably, the outer side of the biomass material block is provided with protrusions to allow for the existence of gaps after the heat shrink tubing shrinks, so as to allow liquid to flow.

[0014] Preferably, the biomass material block is made of organic matter. By introducing liquefied air into the biomass adsorption tube, the liquefied air is fully mixed with the biomass material block, and the rock breaking can be achieved after being ignited by the ignition element.

[0015] The method and steps for using a low-temperature resistant, insulated biomass adsorption tube made of liquefied air are as follows: S1. Conduct on-site cleanup and hazard removal, and carry out hole layout and drilling according to the rock breaking design; S2. Assemble the biomass adsorption tube and connect the injection tube, wires and cables, and lower it into the designed position inside the borehole. S3. Seal the boreholes according to the construction design plan and requirements; S4. A certain amount of liquefied air is introduced into the biomass adsorption tube through the injection device and injection pipe, and then the injection pipe is cut off and sealed. S5. After the liquid filling is completed, the ignition element is activated by the ignition device and the wire, thereby achieving rock breaking.

[0016] Preferably, the sealing material in step S3 is dry drill cuttings.

[0017] This invention provides a low-temperature resistant, insulated biomass adsorption tube for liquefied air and its usage method, with the following beneficial effects: 1. Using biomass blocks as an energy source to replace traditional explosives for rock breaking operations avoids the safety hazards and environmental pollution caused by the use of explosives, achieving green and environmentally friendly rock breaking.

[0018] 2. By fully contacting liquefied air with biomass material blocks, the biomass material burns rapidly after the ignition element is activated, causing the liquefied air to expand violently and generate high-pressure gas, forming a controllable explosive force, effectively achieving rock fracture, and achieving high energy conversion efficiency.

[0019] 3. Heat shrink tubing is used to heat-seal the outside of the biomass adsorption tube, ensuring the airtightness and structural stability of the device in a low-temperature environment (the working temperature of liquefied air), preventing leakage and ensuring operational safety.

[0020] 4. The biomass material blocks are equipped with a central hole, bosses, grooves, and upper and lower flow slots, forming a continuous liquid flow gap when stacked; at the same time, the hollow structure on the fixed cylinder promotes the uniform distribution of liquefied air. These designs ensure that liquefied air can quickly and fully contact the biomass material, improving reaction efficiency.

[0021] 5. The ignition element responds quickly, and the highly reliable ignition device ensures precise and controllable detonation; unactivated holes can eliminate risks through an automatic volatilization mechanism, and the combination of micro-electronic networking and countdown control significantly improves construction safety. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front sectional view of the biomass adsorption tube of the present invention; Figure 2 This is an axial view of the biomass adsorption tube concealing the heat shrink tubing of the present invention; Figure 3 This is the present invention. Figure 2 Exploded view; Figure 4 This is a schematic diagram of the biomass material block structure of the present invention; Figure 5 This is the present invention. Figure 4 A bottom view; Figure 6 This is a schematic diagram of the rock-breaking and lowering connection of the present invention; In the diagram: 1. Biomass adsorption tube; 101. Top cover; 1011. Inlet; 1012. Outlet; 1013. Fixing nail; 102. Fixing cylinder; 1021. Base plate; 1022. Threaded shaft; 1023. Hollowed-out section; 103. Heat shrink tubing; 104. Biomass material block; 1041. Center hole; 1042. Boss; 1043. Upper flow slot; 1044. Groove; 1045. Lower flow slot; 2. Injection device; 3. Ignition device; 4. Injection pipe; 5. Wire; 6. Cable; 7. Ignition element. Detailed Implementation

[0023] Example 1 like Figures 1-5 As shown, the liquefied air low temperature resistant insulating biomass adsorption tube includes a biomass adsorption tube 1. A plurality of biomass material blocks 104 are sleeved on the fixed cylinder 102 in the biomass adsorption tube 1. An upper cover 101 is fixed at the end of the fixed cylinder 102. Heat shrink tubing 103 is sealed and wrapped around the biomass material blocks 104 and the upper cover 101. A wire 5 is inserted through the middle of the top cover 101, and multiple ignition elements 7 are provided at the end of the wire 5. The top cover 101 has a liquid inlet 1011 and an exhaust port 1012 on both sides respectively.

[0024] The biomass material block 104 is made of organic matter, such as agricultural waste, wood, algae, etc., and is converted into combustible gas at high temperature as an energy raw material. The biomass material block 104 is made into a round cake shape, and multiple biomass material blocks 104 are stacked on the fixing cylinder 102 and connected and fixed on the top by the top cover 101. The top cover 101 and the fixing cylinder 102 are plastic products.

[0025] The heat shrink tubing 103 is heat-fused to cover the outside of the biomass adsorption tube 1 to achieve a seal inside the top cover 101, so that liquefied air can be introduced through the liquid inlet 1011. The liquefied air is in full contact with the biomass material block 104. At the same time as the liquefied air is introduced, the exhaust port 1012 can discharge excess air. When breaking rocks, the ignition element 7 is activated to make the biomass material block 104 burn, which causes the liquefied air to expand instantly, generating an explosion to break the rocks.

[0026] Preferably, the bottom of the fixing cylinder 102 is fixed with a base 1021, and the top is a threaded shaft 1022. A hollow 1023 is provided between the base 1021 and the threaded shaft 1022, and multiple biomass material blocks 104 are fitted into the hollow 1023. The fixing cylinder 102 plays a supporting and connecting role inside the multiple biomass material blocks 104, and liquefied air flows from the hollow 1023 to the biomass material blocks 104 to make full contact with them. The ignition element 7 is inserted into the hollow 1023, and the metal resistance wire at the end of the ignition element 7 is directly facing the biomass material block 104 for igniting the biomass material block 104.

[0027] Preferably, the outer edge of the top cover 101 is fitted onto the biomass material block 104, the threaded shaft 1022 at the top of the fixing cylinder 102 is threadedly connected to the middle of the top cover 101, the liquid inlet 1011 and the exhaust port 1012 are connected to the inside of the fixing cylinder 102, and multiple ignition elements 7 at the end of the wire 5 are located inside the fixing cylinder 102. The top cover 101 and the fixing cylinder 102 fix the multiple biomass material blocks 104, and the ignition elements 7 located inside the fixing cylinder 102 are activated to ignite the biomass material blocks 104, thereby activating the expansion of liquefied air to break rocks.

[0028] Preferably, the upper cover 101 is fixed with multiple fixing nails 1013 for connecting to the cable 6, through which the biomass adsorption tube 1 is lowered into the borehole. The cable 6 is also tied to the injection tube 4 and the wire 5 so that the weight of the biomass adsorption tube 1 is distributed on the cable 6, preventing the injection tube 4 and the wire 5 from falling off. The cable 6 is lowered to the designed position in the borehole. More preferably, multiple biomass adsorption tubes 1 are installed in compartments on the cable 6 in the same borehole, thereby enabling blasting operations at different locations within the borehole.

[0029] Preferably, the biomass material block 104 has a central hole 1041 in the middle, a boss 1042 on the outer side of the top, a groove 1044 at the bottom of the central hole 1041, and the base 1021 at the bottom of the fixing cylinder 102 abuts against the groove 1044. Multiple biomass material blocks 104 are stacked and then connected by bosses 1042 and grooves 1044 to create liquid flow gaps between them.

[0030] The biomass material block 104 is formed by casting in a mold. The organic material is crushed, a small amount of glue is added, and it is cast into the mold to form a loose and porous structure. A central hole 1041 is formed in the middle and a boss 1042 is formed on the outer side of the top. Thus, there is still a gap for the flow of liquefied air after they are stacked, ensuring that the two are in full contact.

[0031] Preferably, the top and bottom periphery of the biomass material block 104 are provided with a communicating upper flow slit 1043 and a lower flow slit 1045; the upper flow slit 1043 passes through the boss 1042, and the lower flow slit 1045 communicates with the groove 1044. The outer side of the biomass material block 104 is provided with protrusions to allow for gaps to remain after the heat shrink tubing 103 shrinks, thus facilitating liquid flow. This design accelerates the flow of liquefied air, ensuring rapid contact and fusion between the liquefied air and the biomass material block 104.

[0032] Example 2 like Figures 1-6 As shown in Example 1, the method of using the liquefied air low-temperature resistant insulating biomass adsorption tube is further explained, and the steps are as follows: S1. Conduct on-site cleanup and hazard removal, and carry out hole layout and drilling according to the rock breaking design; The depth of the plugging hole is determined according to the hole depth, hole diameter and other parameters proposed in the construction design plan; before the biomass adsorption pipe 1 enters the site for construction, a warning tape must be set up on the side of the open surface, and a conspicuous warning sign must be placed in the construction area.

[0033] S2. Assemble the biomass adsorption tube 1 and connect the injection tube 4, wire 5 and cable 6, and lower it into the designed position inside the borehole. After the biomass adsorption tube 1 is lowered into the hole, the exposed lengths of the injection tube 4 and the exhaust tube need to be confirmed. The exposed length of the injection tube 4 should be between 0.5m and 1.5m to facilitate connection with the injection tube 4. The exposed length of the exhaust tube should be approximately 0.3m above the ground, and any excess section should be cut off. S3. Seal the boreholes according to the construction design plan and requirements; Dry drill cuttings are generally used to plug the holes. It is strictly forbidden to use coarse stones or boulders to plug the holes, so as to prevent damage to the heat fusion tube and the ignition circuit and the generation of flying stones.

[0034] S4. A certain amount of liquefied air is introduced into the biomass adsorption tube 1 through the injection device 2 and the injection pipe 4, and then the injection pipe 4 is cut off and sealed. Before filling, the network connection of the excitation circuit must be tested to ensure it is functioning properly before filling. At the start of filling, the filling pressure should be controlled between 0.5 and 0.8 MPa. During filling, frequent inspections are necessary to observe the exhaust volume, temperature, and degree of frost on each exhaust pipe. Combined with parameters such as tank pressure display, capacity display, and injection time, analyze the saturation level of liquefied air adsorption within the heat-melting pipe and address any abnormalities promptly. Observers should maintain a safe distance from the emitted gas to prevent frostbite. If a leak occurs in the pipe or joint during filling, immediately close the main valve and wait for the pipe pressure to release before replacing the pipe.

[0035] S5. After the liquid filling is completed, the ignition element 7 is activated by the ignition device 3 and the wire 5, thereby achieving rock breaking.

[0036] Before initiating rock-breaking activation, the tank pressure valve and gas supply valve must be closed, and personnel must be notified to cut the pipes and evacuate. Evacuation personnel should take care not to break the activation network. After rock breaking, a designated person should check for any unactivated pores, observe the rock-breaking effect, and collect data.

[0037] Treatment of unexcited pores: By employing micro-electric network excitation and countdown risk control methods, the liquefied air inside the hole can automatically evaporate after a certain period of time when there is no micro-electric signal.

[0038] Until the evaporation has completely stopped, the site must remain under vigilance and safety precautions to prevent open flames and static electricity, and to prohibit unauthorized personnel and equipment from entering.

[0039] To ensure that the vibration effects generated during rock breaking do not affect the surrounding environment, rock breaking vibration velocity monitoring should be carried out in the early stages of rock breaking or when necessary, so as to provide feedback information to adjust the drilling and rock breaking parameters in a timely manner and ensure construction safety.

[0040] The ignition device 3 consists of a delay mechanism, a booster, output channels, a power supply, an ignition switch, a control panel, and a housing. Parameters are as follows: ignition voltage: 1500V—3000V adjustable; signal output channels: no less than 10 channels; interval time Δt between signal outputs of each channel: 5ms or 10ms adjustable; reliability: 99.9% confidence level; system time error: the total time between the igniter signal output and the ignition element response is controlled within 5ms; shock resistance: meets the requirements of GB 50994 "Standard for Seismic Appraisal of Electrical Equipment in Industrial Enterprises"; operating ambient temperature: -30℃ to +50℃.

[0041] The main function of the ignition element 7 is to convert electrical energy into heat energy output. It consists of a metal resistance wire, leads, internal fixing materials, and a shell. Parameters are as follows: Metal wire heating time and temperature: reaching 800-1500℃ within 3ms; Metal wire material and specifications: tungsten wire or similar material, length 2-5mm; Lead wire length: available in 5m, 10m, and 15m specifications according to actual needs; Ignition element resistance: not greater than 29 Ω; Shock resistance: meets the requirements of GB 50994 "Standard for Seismic Appraisal of Electrical Equipment in Industrial Enterprises"; Protective shell: the protective shell material has strong thermal conductivity and certain compressive and bending strength; it also possesses antistatic, anti-corrosion, and waterproof properties.

[0042] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A low-temperature resistant, insulated biomass adsorption tube made of liquefied air, characterized by: The biomass adsorption tube (1) includes a fixed cylinder (102) in the biomass adsorption tube (1) with multiple biomass material blocks (104) sleeved on it. A top cover (101) is fixed at the end of the fixed cylinder (102). Heat shrink tubing (103) is sealed and wrapped around the biomass material blocks (104) and the top cover (101). A wire (5) is inserted through the middle of the top cover (101), and multiple ignition elements (7) are provided at the end of the wire (5). The top cover (101) has a liquid inlet (1011) and an exhaust port (1012) on both sides respectively.

2. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 1, characterized in that: The bottom of the fixed cylinder (102) is fixed with a base plate (1021) and the top is a threaded shaft (1022). A hollow (1023) is provided between the base plate (1021) and the threaded shaft (1022), and multiple biomass material blocks (104) are fitted into the hollow (1023).

3. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 1, characterized in that: The outer edge of the top cover (101) is fitted onto the biomass material block (104). The threaded shaft (1022) at the top of the fixed cylinder (102) is threadedly connected to the middle of the top cover (101). The liquid inlet (1011) and the exhaust port (1012) are connected to the inside of the fixed cylinder (102). Multiple ignition elements (7) at the end of the wire (5) are located inside the fixed cylinder (102).

4. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 1, characterized in that: Multiple fixing nails (1013) are fixed on the top cover (101). The fixing nails (1013) are used to connect with the cable (6) and the biomass adsorption tube (1) is lowered into the borehole through the cable (6).

5. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 1, characterized in that: The biomass material block (104) has a central hole (1041) in the middle and a boss (1042) on the outer side of the top. The bottom of the central hole (1041) has a groove (1044), and the bottom plate (1021) of the fixed cylinder (102) abuts against the groove (1044). Multiple biomass material blocks (104) are stacked and then connected by bosses (1042) and grooves (1044) to create liquid flow gaps between them.

6. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 5, characterized in that: The top and bottom periphery of the biomass material block (104) are provided with a connected upper flow slit (1043) and a lower flow slit (1045). The upper flow slot (1043) passes through the boss (1042), and the lower flow slot (1045) communicates with the groove (1044).

7. The liquefied air low-temperature resistant insulating biomass adsorption tube according to any one of claims 5 or 6, characterized in that: The outer side of the biomass material block (104) is provided with protrusions so that the heat shrink tube (103) will still have gaps after shrinking, so that liquid can flow.

8. The liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 1, characterized in that: The biomass material block (104) is made of organic matter. By introducing liquefied air into the biomass adsorption tube (1), the liquefied air is fully mixed with the biomass material block (104), and the rock breaking can be achieved after being ignited by the ignition element (7).

9. The method of using the liquefied air low-temperature resistant insulating biomass adsorption tube according to any one of claims 1 to 8, wherein the method steps are as follows: S1. Conduct on-site cleanup and hazard removal, and carry out hole layout and drilling according to the rock breaking design; S2. Assemble the biomass adsorption tube (1) and connect the injection tube (4), wire (5) and cable (6), and lower it into the designed position inside the borehole; S3. Seal the boreholes according to the construction design plan and requirements; S4. A certain amount of liquefied air is introduced into the biomass adsorption tube (1) through the injection device (2) and the injection pipe (4), and then the injection pipe (4) is cut off and sealed. S5. After the liquid filling is completed, the ignition element (7) is activated by the ignition device (3) and the wire (5) to achieve rock breaking.

10. The method of using the liquefied air low-temperature resistant insulating biomass adsorption tube according to claim 9, characterized in that: The sealing material in step S3 is dry drill cuttings.

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