Field filling type liquefied air energy storage rock breaking system

Abstract

The utility model provides an on-site filling type liquefied air energy storage rock breaking system, which relates to the technical field of rock breaking devices, and comprises a liquefied air storage tank, an intelligent filling machine, a filling pipe and a detonation controller, and is also provided with a plurality of rock breaking devices, each rock breaking device comprises a blasting cartridge and a packaging cover, the blasting cartridge is filled with an adsorption material, and the packaging cover is provided with a sealing cover. And a blasting head and an injection pipe which are communicated with the blasting cartridge are arranged on the packaging cover. Through the matching of the structures, the explosion device has the following beneficial effects that firstly, a field filling mode is adopted, so that the potential safety hazard of the explosion device filled with a large amount of liquefied air in the transportation and storage process is effectively avoided; secondly, the multiple rock breaking devices are located in the multiple rock breaking holes respectively, the detonation controller controls the multiple blasting heads to heat liquefied air in the blasting cylinder at the same time, and therefore all the rock breaking devices are detonated in the rock breaking holes; and thirdly, the blasting cylinder of the rock breaking device is filled with an adsorption material, and the adsorption material can improve the stability of liquefied air blasting.

Description

Technical Field

[0001] This utility model relates to the field of rock breaking device technology, and in particular to a field-filled liquefied air energy storage rock breaking system. Background Technology

[0002] Liquefied air rock breaking technology is a new type of rock breaking method. The principle is to compress and cool air to a low liquefaction state and then inject it into the rock breaking device. It is then filled into the pre-drilled rock breaking hole. The liquefied air is heated by an excitation device to make it rapidly vaporize and expand, thereby breaking the rock.

[0003] When using liquefied air rock breaking technology in mining, in order to achieve high-efficiency or high-precision blasting of ore or rock and soil in the mining area, it is often necessary to detonate multiple rock breaking holes simultaneously over a large area. In this blasting process, a large number of blasting devices and blasting materials (liquefied air) are required. However, there are certain risks associated with filling the blasting device with liquefied air.

[0004] On the one hand, blasting devices pre-filled with liquefied air are prone to leakage or even accidental explosion during transportation due to factors such as bumpy road conditions and changes in ambient temperature, posing a great safety threat to transport personnel and the surrounding environment. On the other hand, during storage, a large number of blasting devices pre-filled with liquefied air will experience increased vaporization pressure during long-term storage, leading to a decrease in the stability of the blasting devices. Once an accident such as local overheating or impact occurs, it may trigger a chain explosion, greatly increasing the risk of accidental detonation of the blasting devices.

[0005] Therefore, in order to increase the adoption rate of liquefied air rock breaking technology in mining areas and other scenarios requiring large-scale rock breaking, a liquefied air energy storage rock breaking system that can improve safety, stability, and ease of operation is needed. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a field-filled liquefied air energy storage rock breaking system that can significantly improve safety, enhance blasting stability and effect, and is easy to operate.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model provides a field-filled liquefied air energy storage rock breaking system, including a liquefied air storage tank, an intelligent filling machine, a filling pipe and an initiation controller, wherein multiple rock breaking devices are also provided. Each rock breaking device includes a blasting cylinder and a sealing cap. The blasting cylinder is filled with adsorbent material, and the sealing cap is provided with a blasting head and an injection pipe that are connected to the blasting cylinder.

[0008] In a preferred embodiment, the upper end of the blasting cartridge has an opening, the sealing cover closes the upper end opening of the blasting cartridge, and one end of the injection tube extends through the sealing cover and communicates with the cavity in the blasting cartridge;

[0009] The liquefied air storage tank stores liquefied air, and the intelligent filling machine is arranged on the filling pipe.

[0010] In a preferred embodiment, the adsorption material is an adsorption paper roll.

[0011] In a preferred embodiment, the adsorption paper roll is arranged in the blasting cartridge.

[0012] In a preferred embodiment, the blasting cartridge further comprises a filling pipe, the adsorption paper roll is provided with a through hole in the axial direction, the filling pipe passes through the through hole of the adsorption paper roll, the upper end of the filling pipe is connected to the injection tube, the lower end of the filling pipe extends to the inner wall of the bottom of the blasting cartridge, and the lower end of the filling pipe is provided with a filling head.

[0013] In a preferred embodiment, the outer diameter of the filling head is greater than the inner diameter of the through hole of the adsorption paper roll, and the side wall of the filling head is provided with a plurality of communication holes at equal intervals in the circumferential direction.

[0014] The distance between the filling head and the inner wall of the bottom of the blasting cartridge is between 3 mm and 7 mm.

[0015] In a preferred embodiment, the sealing cover is provided with an ignition hole, the blasting head is threadedly connected in the ignition hole, the blasting head is provided with an ignition tube, and the lower end of the ignition tube extends into the blasting cartridge.

[0016] In a preferred embodiment, the blasting head is provided with an ignition connection lead wire, and the ignition controller is connected to the plurality of blasting heads through the ignition connection lead wire.

[0017] In a preferred embodiment, the sealing cover is provided with an injection hole, the injection tube is fixedly connected in the injection hole, the upper end of the injection tube is connected to the filling branch pipe, and the lower end of the injection tube extends into the upper end of the filling pipe.

[0018] In a preferred embodiment, the sealing cover comprises a sealing sleeve and a blocking block, and the sealing sleeve is sleeved on the upper end of the blocking block.

[0019] The sealing sleeve is made of rubber, and the diameter of the upper end of the sealing sleeve is greater than the diameter of the lower end of the sealing sleeve.

[0020] In the preferred scheme, the blocking block is a cylindrical block, and the lower end of the blocking block is conical, the conical angle of the conical end is 0.5° to 1°, the lower end of the blocking block is inserted into the opening at the upper end of the blasting cylinder, and the outer wall of the upper end of the blasting cylinder is further provided with a locking hoop, and the locking hoop locks the upper end of the blasting cylinder to the outer wall of the blocking block.

[0021] The lower end edge of the blocking block is provided with a chamfer, and the chamfer angle is 45°.

[0022] The utility model provides a kind of field filling type liquefied air energy storage rock breaking system, by the cooperation between above-mentioned structure, compared with prior art, the utility model has the following beneficial effects:

[0023] First, the liquefied air energy storage rock breaking system uses field filling mode, liquefied air is stored in liquefied air storage tank with good heat insulation performance before blasting, effectively avoids the security risks of a large number of liquefied air filled blasting devices in transportation and storage process, and the intelligent filling machine will first extract gaseous air in the blasting cylinder before filling, reduces the risk of accidental explosion caused by mixed gas, greatly guarantees the safety of personnel and equipment.

[0024] Second, the liquefied air energy storage rock breaking system, when in use, a plurality of rock breaking devices are located in a plurality of rock breaking holes, and the intelligent filling machine can fill the liquefied air in the liquefied air storage tank into the blasting cylinder of the rock breaking device through the filling pipe and the filling branch pipe, and the initiation controller controls the heating of the liquefied air in the blasting cylinder of the plurality of blasting heads at the same time, so that all the rock breaking devices are detonated in the rock breaking holes, thereby achieving a large area of rock breaking effect.

[0025] Third, the liquefied air storage tank of the liquefied air energy storage rock breaking system can improve the safety of liquefied air storage, and the blasting cylinder of the rock breaking device is filled with adsorbent material, which can improve the stability of liquefied air blasting, and the device has the advantages of simple structure and easy assembly, which can effectively improve the efficiency of liquefied air storage and blasting. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described in connection with the drawings and examples:

[0027] Fig. 1 It is the structure schematic diagram of the field filling type liquefied air energy storage rock breaking system of the utility model embodiment.

[0028] Fig. 2 It is the cross-sectional view of the rock breaking device of the field filling type liquefied air energy storage rock breaking system of the utility model embodiment.

[0029] In the figure: liquefied air storage tank 1, intelligent filling machine 2, filling pipe 3, filling branch pipe 31, detonation controller 4, packaging cover 5, blocking block 51, sealing sleeve 52, injection pipe 53, blasting cylinder 6, locking hoop 61, blasting head 7, detonation tube 71, adsorption material 8, filling pipe 81, filling head 82. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model embodiment will be described further below with reference to the drawings.

[0031] Please refer to Figs. 1-2 The utility model discloses a kind of field filling type liquefied air energy storage rock breaking systems, including liquefied air storage tank 1, intelligent filling machine 2, filling pipe 3, detonation controller 4 and multiple rock breaking devices;

[0032] Liquefied air is stored in liquefied air storage tank 1, in the embodiment, liquefied air storage tank 1 is dour.

[0033] Among them, dour is the stainless steel pressure vessel using super vacuum insulation, which can store liquefied air safely and economically.

[0034] Rock breaking device includes blasting cylinder 6 and packaging cover 5, blasting cylinder 6 is flexible polymer material, the lower end of blasting cylinder 6 is closed, and the upper end has opening, and blasting cylinder 6 is provided with adsorption material 8 filled therein, adsorption material 8 is porous material, and adsorption material 8 can adsorb liquefied air by using its porous material, so that liquefied air remains stable in blasting cylinder 6, and the possibility of accidental blasting of liquefied air in blasting cylinder 6 is reduced.

[0035] Packaging cover 5 closes the upper end opening of blasting cylinder 6, and blasting head 7 and injection pipe 53 are provided on packaging cover 5 and communicated with blasting cylinder 6, one end of injection pipe 53 passes through packaging cover 5 and extends to the cavity in blasting cylinder 6 and communicates.

[0036] Liquefied air storage tank 1 is connected with filling pipe 3, and intelligent filling machine 2 is provided on filling pipe 3, and liquid pump and air pump are built-in in intelligent filling machine 2, which has bidirectional liquid delivery and air pumping function, and intelligent filling machine 2 is prior art, and its structure will not be described in detail here, and a plurality of filling branch pipes 31 are connected on filling pipe 3, and filling valve (filling valve is prior art, not shown in the figure) for controlling the on-off of filling branch pipe 31 is further provided on each filling branch pipe 31.

[0037] Intelligent filling machine 2 fills liquefied air in liquefied air storage tank 1 into the blasting cylinder 6 of all rock breaking devices through injection pipe 53 on site through filling pipe 3;

[0038] It can be understood that the intelligent filling machine 2 will first extract the gaseous air in the blasting cylinder 6 when filling the liquefied air, so that the blasting cylinder 6 is in a negative pressure state, which can prevent the gaseous air remaining in the blasting cylinder 6 from affecting the filling of the liquefied air, and ensure that the blasting cylinder 6 can be filled with liquefied air. Each filling branch pipe 31 is connected to the injection pipe 53 on the corresponding rock breaking device, and the initiation controller 4 is connected to all blasting heads 7.

[0039] The liquefied air energy storage rock breaking system is used in the following way: the rock breaking device is assembled and then pre-placed in the rock breaking hole; then the intelligent filling machine 2 fills the liquefied air in the liquefied air storage tank 1 into the blasting cylinder 6 of the rock breaking device through the filling pipe 3 and the filling branch pipe 31; finally, the initiation controller 4 controls multiple blasting heads 7 to heat the liquefied air in the blasting cylinder 6 at the same time, so that all rock breaking devices are detonated in the rock breaking hole, thereby achieving a large-area rock breaking effect. The liquefied air energy storage rock breaking system stores liquefied air in the Dewar flask before blasting and fills it into the rock breaking device on site before blasting, which can greatly improve the safety of the liquefied air rock breaking process. In addition, the blasting cylinder 6 of the rock breaking device is filled with adsorbent material 8, which can improve the stability of the liquefied air blasting.

[0040] In the preferred embodiment, the adsorbent material 8 is an adsorbent paper roll. Each blasting cylinder 6 is provided with multiple adsorbent paper rolls, which are sequentially stacked and filled into the blasting cylinder 6 along the axial direction of the blasting cylinder 6. Each blasting cylinder 6 is also provided with a filling pipe 81, and the adsorbent paper rolls are provided with through serial holes along the axial direction. The filling pipe 81 passes through the serial holes of all adsorbent paper rolls in the blasting cylinder 6, thereby connecting all adsorbent paper rolls into an integral structure; the upper end of the filling pipe 81 is connected to the injection pipe 53.

[0041] In the above structure, using an adsorbent paper roll as the adsorbent material 8 can improve the convenience of filling the adsorbent material 8, thereby effectively improving the assembly efficiency of the rock breaking system and making it more convenient for on-site assembly and filling. In addition, the adsorbent paper roll also has the advantages of light weight and low cost.

[0042] In the preferred embodiment, the end of the filling pipe 81 extends to the inner wall of the bottom of the blasting cylinder 6, and the end of the filling pipe 81 is also provided with a filling head 82. The outer diameter of the filling head 82 is greater than the inner diameter of the serial holes on the adsorbent paper roll, and multiple communication holes are evenly distributed on the side wall of the filling head 82 along the circumferential direction. The filling head 82 can prevent the adsorbent paper roll from falling off the filling pipe 81 during the serial connection process.

[0043] The distance between the filling head 82 and the inner wall of the bottom of the blasting cylinder 6 is between 3mm and 7mm, so that the liquefied air can be fully filled;

[0044] In the preferred embodiment, the sealing cover 5 comprises a sealing sleeve 52 and a blocking block 51, the sealing sleeve 52 is sleeved on the upper end of the blocking block 51, the sealing sleeve 52 is made of rubber material and has great elasticity, the upper end of the sealing sleeve 52 has a larger diameter than the lower end of the sealing sleeve 52, that is, the outer wall of the sealing sleeve 52 is a circular truncated cone with a large upper end and a small lower end, so that the sealing cover 5 can be inserted into the rock breaking hole and block the upper end of the rock breaking hole.

[0045] In the preferred embodiment, the blocking block 51 is provided with an initiation hole, the blasting head 7 is threadedly connected in the initiation hole, the blasting head 7 is provided with an initiation tube 71, the lower end of the initiation tube 71 extends into the blasting cylinder 6, the initiation tube 71 is a heating tube, the blasting head 7 is provided with an initiation connecting wire, the initiation controller 4 is connected with all the blasting heads 7 through the initiation connecting wire, when the initiation controller 4 initiates the liquid air, the initiation controller 4 electrifies the initiation tube 71 to heat it, so as to initiate the liquefied air.

[0046] In the preferred embodiment, the blocking block 51 is provided with an injection hole, the injection pipe 53 is fixedly connected in the injection hole, the upper end of the injection pipe 53 is connected with the filling branch pipe 31, and the lower end of the injection pipe 53 extends into the upper end of the filling pipe 81.

[0047] In the preferred embodiment, the blocking block 51 is a cylindrical block, the lower end of the blocking block 51 is inserted into the opening at the upper end of the blasting cylinder 6, and the lower end of the blocking block 51 is conical, the conical portion has a conical angle ranging from 0.5° to 1°, which ensures that the blocking block can effectively seal the opening at the upper end of the blasting cylinder, the outer wall of the upper end of the blasting cylinder 6 is further provided with a locking hoop 61, the locking hoop 61 locks the upper end of the blasting cylinder 6 to the outer wall of the blocking block 51, the blocking block 51 and the injection pipe 53 are made of steel, the lower end edge of the blocking block 51 is chamfered at an angle of 45°, so as to avoid damaging the opening of the blasting cylinder 6 when being inserted, so that the sealing cover 5 and the blasting head 7 are not easily damaged during the blasting process of the rock breaking device, wherein the blasting cylinder 6 is a disposable product, so that the sealing cover 5 and the blasting head 7 can be repeatedly used.

[0048] In this document, the front, back, up, down and other orientation words are defined according to the position of the parts in the drawing and the position of the parts relative to each other, only to express the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application.

[0049] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0050] The above-mentioned only for the preferred embodiment of the present application, and not to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

[0051] It also needs to be explained that the terms "first", "second" and the like in the description and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein.

Claims

1. A field filling type liquefied air energy storage rock breaking system comprising a liquefied air storage tank (1), an intelligent filling machine (2), a filling pipe (3) and an initiation controller (4), characterized in that, The rock breaking device comprises a blasting cylinder (6) and an encapsulation cover (5), the blasting cylinder (6) is filled with an adsorption material (8), and the encapsulation cover (5) is provided with a blasting head (7) and an injection pipe (53) in communication with the blasting cylinder (6).

2. The on-site filled liquid air energy stored rock breaking system of claim 1, wherein, The upper end of the blasting cylinder (6) is provided with an opening, the encapsulation cover (5) seals the upper end opening of the blasting cylinder (6), and one end of the injection pipe (53) penetrates through the encapsulation cover (5) and extends into the cavity in the blasting cylinder (6) in communication; The liquefied air storage tank (1) is provided with liquefied air, the liquefied air storage tank (1) is connected with a filling pipe (3), the intelligent filling machine (2) is arranged on the filling pipe (3), the filling pipe (3) is connected with a plurality of filling branch pipes (31), each filling branch pipe (31) is connected with the injection pipe (53) of the corresponding rock breaking device, and the detonation controller (4) is connected with all the blasting heads (7).

3. The on-site filled liquid air energy stored rock breaking system of claim 2, wherein, The adsorption material (8) is an adsorption paper roll. A plurality of adsorption paper rolls are arranged in each blasting cylinder (6) and are sequentially stacked in the axial direction of the blasting cylinder (6).

4. The on-site filled liquid air energy stored rock breaking system of claim 3, wherein, Each blasting cylinder (6) is further provided with a filling pipe (81), the adsorption paper roll is provided with a through serial hole in the axial direction, the filling pipe (81) penetrates through the serial holes of the plurality of adsorption paper rolls in the blasting cylinder (6), the upper end of the filling pipe (81) is connected with the injection pipe (53), the end of the filling pipe (81) extends to the inner wall of the bottom of the blasting cylinder (6), and the end of the filling pipe (81) is provided with a filling head (82).

5. The on-site fill liquid air energy storage rock breaking system of claim 4, wherein, The outer diameter of the filling head (82) is greater than the inner diameter of the serial hole of the adsorption paper roll, and a plurality of communication holes are equidistantly arranged on the side wall of the filling head (82) in the circumferential direction. The distance between the filling head (82) and the inner wall of the bottom of the blasting cylinder (6) is 3mm to 7mm.

6. The on-site fill liquid air energy storage rock breaking system of claim 1, wherein, The encapsulation cover (5) is provided with a detonation hole, the blasting head (7) is threadedly connected in the detonation hole, the blasting head (7) is provided with a detonation pipe (71), and the lower end of the detonation pipe (71) extends into the blasting cylinder (6).

7. The on-site fill liquid air energy storage rock breaking system of claim 1, wherein, The blasting head (7) is provided with a detonation connection lead wire, and the detonation controller (4) is connected with the plurality of blasting heads (7) through the detonation connection lead wire.

8. The on-site filled liquid air energy stored rock breaking system of claim 4, wherein, The encapsulation cover (5) is provided with an injection hole, the injection pipe (53) is fixedly connected in the injection hole, the upper end of the injection pipe (53) is connected with the filling branch pipe (31), and the lower end of the injection pipe (53) extends into the upper end of the filling pipe (81).

9. The on-site fill liquid air energy storage rock breaking system of claim 4, wherein, The encapsulation cover (5) comprises a sealing sleeve (52) and a plugging block (51), and the sealing sleeve (52) is sleeved on the upper end of the plugging block (51). The sealing sleeve (52) is made of rubber, and the diameter of the upper end of the sealing sleeve (52) is greater than that of the lower end of the sealing sleeve (52).

10. The on-site fill liquid air energy storage rock breaking system of claim 9, wherein, The plugging block (51) is a cylindrical block, the lower end of the plugging block (51) is conical, the conical angle is 0.5° to 1°, the lower end of the plugging block (51) is inserted into the upper end opening of the blasting cylinder (6), the upper end outer wall of the blasting cylinder (6) is further provided with a locking hoop (61), and the locking hoop (61) locks the upper end of the blasting cylinder (6) to the outer wall of the plugging block (51). The lower end edge of the plugging block (51) is provided with a chamfer, and the chamfer angle is 45°.

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