Liquid oxygen environmental protection pressure equalization delivery method

Abstract

The present application relates to the technical field of liquid oxygen, and discloses an environment-friendly pressure-equalizing delivery method for liquid oxygen, which comprises a liquid-oxygen delivery tank and a pressure-increasing device. The liquid-oxygen delivery tank is in communication with a plurality of gas explosion pipes through oxygen delivery pipes and delivers liquid oxygen to the plurality of gas explosion pipes. During the delivery of liquid oxygen to the gas explosion pipes, when the pressure in the liquid-oxygen delivery tank is less than a set pressure range, the pressure-increasing device delivers gaseous oxygen to the liquid-oxygen delivery tank to make the pressure in the liquid-oxygen delivery tank reach the set pressure range. The delivery of liquid oxygen to the plurality of gas explosion pipes through the oxygen delivery pipes can improve work efficiency. The pressure-increasing device is used to provide gaseous oxygen during the delivery of liquid oxygen to the gas explosion pipes, so that the pressure in the liquid-oxygen delivery tank reaches the set pressure range. This process is environment-friendly and non-polluting, and can avoid the insufficient pressure in the liquid-oxygen delivery tank from affecting the delivery of liquid oxygen, thereby solving the problem of uneven pressure of the liquid-oxygen delivery tank during the delivery of liquid oxygen.

Description

Technical Field

[0001] This invention relates to the technical field of liquid oxygen, and more specifically, to an environmentally friendly pressure equalization method for liquid oxygen transportation. Background Technology

[0002] Currently, in mining technology, the most common method used in blasting mining is explosive blasting. However, explosive blasting is dangerous and polluting. Therefore, some mining blasting technologies now use gas blasting technology.

[0003] Gas blasting technology utilizes the vaporization and expansion of easily vaporized liquid or solid substances to generate high-pressure gas, causing the surrounding medium to expand and do work, resulting in breakage. It is characterized by being flameless, safe, and highly efficient.

[0004] In the existing technology, liquid oxygen is transported to the gas explosion pipe through an oxygen supply pipe via an oxygen supply tank. The gas explosion pipe is placed in a drilled hole in the rock. After the liquid oxygen is supplied to the gas explosion pipe to a set capacity through the oxygen supply pipe, the combustible material is ignited by an ignition structure. After the combustible material is ignited, the liquid oxygen in the sealed cavity rapidly vaporizes and expands, causing the entire gas explosion pipe to explode and crack the rock.

[0005] Currently, when the liquid oxygen tank is supplying liquid oxygen to the gas explosion pipe, the pressure inside the liquid oxygen tank itself will decrease, which will affect the efficiency of the liquid oxygen tank in supplying liquid oxygen to the gas explosion pipe. Summary of the Invention

[0006] The purpose of this invention is to provide an environmentally friendly pressure equalization method for transporting liquid oxygen, which aims to solve the problem of uneven pressure in existing liquid oxygen tanks when transporting liquid oxygen.

[0007] The present invention is implemented as follows: an environmentally friendly liquid oxygen equalization and transportation method, comprising an oxygen supply liquid oxygen tank and a pressurization device, wherein the oxygen supply liquid oxygen tank is connected to multiple gas explosion pipes through oxygen supply pipes and supplies liquid oxygen to the multiple gas explosion pipes; the pressurization device is connected to the oxygen supply liquid oxygen tank.

[0008] During the process of supplying liquid oxygen to the gas explosion pipe, when the pressure inside the liquid oxygen tank is lower than the set pressure range, the pressurization device supplies gaseous oxygen to the liquid oxygen tank so that the pressure inside the liquid oxygen tank reaches the set pressure range.

[0009] Furthermore, the pressurization device includes a pressurized liquid oxygen tank and an evaporator that vaporizes liquid oxygen into gaseous oxygen; during the process of supplying liquid oxygen to the gas explosion pipe, when the pressure inside the liquid oxygen tank is less than a set pressure range, the pressurized liquid oxygen tank supplies liquid oxygen to the evaporator, and after the evaporator vaporizes the liquid oxygen into gaseous oxygen, the gaseous oxygen is supplied to the liquid oxygen tank.

[0010] Furthermore, the pressurized liquid oxygen tank is connected to the oxygen delivery liquid oxygen tank via a delivery pipe, and the evaporator is installed on the delivery pipe.

[0011] Furthermore, a control cabinet is provided, the delivery pipe is connected to the control cabinet, and the control cabinet controls the opening or closing of the delivery pipe.

[0012] Furthermore, the control cabinet is equipped with a flow meter. When the control cabinet controls the delivery pipe to open, the flow meter monitors and measures the volume of liquid oxygen delivered from the pressurized liquid oxygen tank to the evaporator.

[0013] Furthermore, the control cabinet is equipped with a positioner.

[0014] Furthermore, the evaporator is mounted on the control cabinet.

[0015] Furthermore, one end of the oxygen delivery pipe is connected to the oxygen liquid tank, and the other end of the oxygen delivery pipe is provided with multiple branch pipes, which are respectively connected to multiple gas explosion pipes.

[0016] Furthermore, the gas explosion pipe is provided with a connector for inputting liquid oxygen, which is connected to the oxygen supply pipe; the connector has a hollow cavity that runs vertically through the cavity, the upper part of the hollow cavity is provided with an inner ring, the outer periphery of the inner ring abuts against the inner wall of the hollow cavity; the bottom of the inner ring is provided with a closing plate that moves vertically, which is used to seal the hollow cavity.

[0017] The top of the closing plate is provided with multiple telescopic pressure rods that control the up and down movement of the closing plate. The multiple telescopic pressure rods pass through the top circumference of the inner ring from top to bottom and abut against the top of the closing plate. The outer diameter of the closing plate is larger than the inner diameter of the inner ring. The top of the inner ring is provided with an elastic element that drives the telescopic pressure rods to move upward and reset. The middle part of the hollow cavity has an outwardly expanding transition cavity. The transition cavity is connected to the upper part and the lower part of the hollow cavity. The closing plate is located above the transition cavity.

[0018] During the process of the oxygen delivery tube being inserted into the connector to deliver liquid oxygen, the bottom of the oxygen delivery tube moves toward the upper part of the hollow cavity and presses against the telescopic pressure rod. After the oxygen delivery tube starts to deliver liquid oxygen, the flow pressure of the liquid oxygen will push the closing plate to move downward into the transition cavity, and the liquid oxygen flows from the transition cavity toward the lower part of the hollow cavity into the gas explosion tube.

[0019] Furthermore, there is a gap between the inner ring and the top opening of the hollow cavity, and the inner wall of the gap is provided with a slot or buckle for fixing the oxygen supply tube connection.

[0020] Compared with existing technologies ，The present invention provides an environmentally friendly, pressure-equalizing liquid oxygen delivery method. This method improves work efficiency by using a liquid oxygen tank to deliver liquid oxygen to multiple gas-explosion pipes via an oxygen delivery pipe. By utilizing a pressurization device to supply gaseous oxygen to the liquid oxygen tank during the delivery process, the pressure within the liquid oxygen tank reaches a set range. This process is both environmentally friendly and pollution-free, preventing insufficient pressure within the liquid oxygen tank from affecting liquid oxygen delivery and solving the problem of uneven pressure within the liquid oxygen tank during liquid oxygen delivery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the liquid oxygen environmentally friendly pressure equalization transportation method provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the static state structure of the connector provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the working state structure of the connector provided by the present invention.

[0024] In the diagram: 100 liquid oxygen tank, 200 pressurization equipment, 300 oxygen delivery pipe, 400 gas explosion pipe, 500 control cabinet, 600 branch pipe, 700 connector, 201 pressurized liquid oxygen tank, 202 evaporator, 203 delivery pipe, 701 hollow cavity, 702 inner ring, 703 closing plate, 704 telescopic pressure rod, 705 elastic element, 706 transition cavity, 707 interval area. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0027] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] Reference Figure 1-3 The image shown is a preferred embodiment of the present invention.

[0029] An environmentally friendly pressure equalization method for liquid oxygen delivery includes an oxygen delivery liquid oxygen tank 100 and a pressurization device 200. The oxygen delivery liquid oxygen tank 100 is connected to multiple gas explosion pipes 400 through an oxygen delivery pipe 300 and delivers liquid oxygen to the multiple gas explosion pipes 400. The pressurization device 200 is connected to the oxygen delivery liquid oxygen tank 100.

[0030] During the process of supplying liquid oxygen to the gas explosion pipe 400, when the pressure inside the liquid oxygen tank 100 is less than the set pressure range, the booster device 200 supplies gaseous oxygen to the liquid oxygen tank 100 so that the pressure inside the liquid oxygen tank 100 reaches the set pressure range.

[0031] The above-mentioned environmentally friendly pressure equalization method for liquid oxygen transportation improves work efficiency by allowing the liquid oxygen tank 100 to transport liquid oxygen to multiple gas explosion pipes 400 via the oxygen delivery pipe 300. The booster device 200 provides gaseous oxygen to the liquid oxygen tank 100 during the liquid oxygen delivery to the gas explosion pipes 400, ensuring that the pressure inside the liquid oxygen tank 100 reaches the set pressure range. This process is both environmentally friendly and pollution-free, preventing insufficient pressure inside the liquid oxygen tank 100 from affecting the delivery of liquid oxygen and solving the problem of uneven pressure within the liquid oxygen tank 100 during liquid oxygen transportation.

[0032] In this embodiment, the pressurization device 200 includes a pressurized liquid oxygen tank 201 and an evaporator 202 that vaporizes liquid oxygen into gaseous oxygen. During the process of supplying liquid oxygen to the gas explosion pipe 400, when the pressure inside the liquid oxygen tank 100 is less than the set pressure range, the pressurized liquid oxygen tank 201 supplies liquid oxygen to the evaporator 202. After the evaporator 202 vaporizes the liquid oxygen into gaseous oxygen, the gaseous oxygen is then supplied to the liquid oxygen tank 100.

[0033] The pressurization device 200 uses the pressurized liquid oxygen tank 201 to supply liquid oxygen to the evaporator 202. After the liquid oxygen vaporizes into gaseous oxygen in the evaporator 202, it is transported towards the oxygen supply liquid oxygen tank 100. This ensures that the pressure in the oxygen supply liquid oxygen tank 100 is within the set pressure range. This can prevent insufficient pressure in the oxygen supply liquid oxygen tank 100 during the process of supplying liquid oxygen to multiple gas explosion tubes 400, which would lead to insufficient pressure in the oxygen supply tubes 300 when supplying liquid oxygen, resulting in the multiple gas explosion tubes 400 not receiving liquid oxygen evenly.

[0034] The pressurized liquid oxygen tank 201 is connected to the oxygen delivery liquid oxygen tank 100 via a delivery pipe 203, and an evaporator 202 is installed on the delivery pipe 203. In this way, when the pressurized liquid oxygen tank 201 delivers liquid oxygen to the oxygen delivery liquid oxygen tank 100, the liquid oxygen remains within the delivery pipe 203, reducing losses during delivery. Furthermore, the evaporator 202 vaporizes the liquid oxygen into gaseous oxygen, which is then delivered to the oxygen delivery liquid oxygen tank 100, maintaining the pressure within the oxygen delivery liquid oxygen tank 100 within a set pressure range.

[0035] In this embodiment, a control cabinet 500 is provided, and a delivery pipe 203 is connected to the control cabinet 500. The control cabinet 500 controls the opening or closing of the delivery pipe 203.

[0036] When the pressure inside the oxygen supply liquid oxygen tank 100 is within the set pressure range, the control cabinet 500 controls the delivery pipe 203 to close, so as to prevent the pressurized liquid oxygen tank 201 from continuously vaporizing liquid oxygen into gaseous oxygen through the evaporator 202 and delivering it to the oxygen supply liquid oxygen tank 100 through the delivery pipe 203, which would cause the pressure inside the oxygen supply liquid oxygen tank 100 to be too high and cause an accident.

[0037] In this embodiment, the control cabinet 500 is equipped with a flow meter. When the control cabinet 500 controls the delivery pipe 203 to open, the flow meter monitors and measures the volume of liquid oxygen delivered from the pressurized liquid oxygen tank 201 to the evaporator 202.

[0038] The control cabinet 500 uses a flow meter to calculate the capacity of liquid oxygen supplied from the pressurized liquid oxygen tank 201 to the evaporator 202. By estimating the capacity of liquid oxygen supplied by the pressurized liquid oxygen tank 201 using the flow meter, the remaining capacity of liquid oxygen in the pressurized liquid oxygen tank 201 can be calculated. The flow meter can be used to detect when the pressurized liquid oxygen tank 201 is empty, and the pressurized liquid oxygen tank 201 can be replaced in time to avoid the pressurized liquid oxygen tank 201 being unable to supply liquid oxygen, which would affect the efficiency or progress of the entire workflow.

[0039] Control cabinet 500 is equipped with a positioner. This allows the position of all control cabinets 500 to be monitored, facilitating the management of control cabinets 500.

[0040] Evaporator 202 is mounted on control cabinet 500. This makes it more convenient and efficient for control cabinet 500 to control the supply pipe 203 to connect to evaporator 202 to supply liquid oxygen or to shut off the supply of liquid oxygen, thus improving the accuracy of control cabinet 500 in controlling the supply pipe 203 to supply liquid oxygen.

[0041] In this embodiment, one end of the oxygen delivery pipe 300 is connected to the oxygen liquid oxygen tank 100, and the other end of the oxygen delivery pipe 300 is provided with multiple branch pipes 600, which are respectively connected to multiple gas explosion pipes 400.

[0042] The oxygen supply liquid oxygen tank 100 can simultaneously or sequentially supply liquid oxygen to multiple branch pipes 600 through the oxygen supply pipe 300, while the branch pipes 600 introduce liquid oxygen into the gas explosion pipe 400, thereby improving the working efficiency of the oxygen supply liquid oxygen tank 100 in supplying liquid oxygen to the gas explosion pipe 400. At the same time, it also solves the problem that when the oxygen supply liquid oxygen tank 100 supplies liquid oxygen intermittently, it will increase the pressure loss inside the oxygen supply liquid oxygen tank 100 and waste the amount of liquid oxygen.

[0043] In this embodiment, the gas explosion pipe 400 is provided with a connector 700 for inputting liquid oxygen, and the connector 700 is connected to the oxygen supply pipe 300; the connector 700 has a hollow cavity 701 that runs vertically through the cavity, and an inner ring 702 is provided at the upper part of the hollow cavity 701, with the outer periphery of the inner ring 702 abutting against the inner wall of the hollow cavity 701; a closing plate 703 that moves vertically is provided at the bottom of the inner ring 702, and the closing plate 703 is used to seal the hollow cavity 701;

[0044] The top of the closing plate 703 is provided with multiple telescopic pressure rods 704 for controlling the up and down movement of the closing plate 703. The multiple telescopic pressure rods 704 pass through the top circumference of the inner ring 702 from top to bottom and abut against the top of the closing plate 703. The outer diameter of the closing plate 703 is larger than the inner diameter of the inner ring 702. The top of the inner ring 702 is provided with an elastic element 705 for driving the telescopic pressure rods 704 to move upward and reset. The middle part of the hollow cavity 701 has an outwardly expanding transition cavity 706. The transition cavity 706 communicates with the upper part and the lower part of the hollow cavity 701. The closing plate 703 is located above the transition cavity 706.

[0045] When the oxygen delivery tube 300 is inserted into the connector 700 to deliver liquid oxygen, the bottom of the oxygen delivery tube 300 moves toward the upper part of the hollow cavity 701 and presses against the telescopic pressure rod 704. After the oxygen delivery tube 300 starts to deliver liquid oxygen, the flow pressure of the liquid oxygen will push the closing plate 703 to move downward into the transition cavity 706. The liquid oxygen flows from the transition cavity 706 toward the lower part of the hollow cavity 701 into the gas explosion tube 400.

[0046] The gas explosion tube 400 receives liquid oxygen from the oxygen supply tube 300 via connector 700. When the liquid oxygen fills the gas explosion tube 400, it needs to be pulled out, which can cause the liquid oxygen inside the tube to overflow or vaporize and be lost, reducing the liquid oxygen content and thus the explosion effect. Using connector 700 to allow liquid oxygen to flow unidirectionally into the gas explosion tube 400 solves the problem of liquid oxygen overflow or vaporization and loss, thus reducing the liquid oxygen content inside the tube.

[0047] The connector 700, through the inner ring 702 and the closing plate 703, can seal the upper part of the hollow cavity 701, so that the liquid oxygen in the gas explosion tube 400 will not overflow from the connector 700 or be vaporized and lost. When it is necessary to deliver liquid oxygen into the gas explosion tube 400, after the oxygen delivery tube 300 is inserted into the upper part of the hollow cavity 701, the oxygen delivery tube 300 begins to deliver liquid oxygen. The flow pressure of the liquid oxygen will push the closing plate 703 downward to the transition cavity 706, and the liquid oxygen flows from the transition cavity 706 towards the lower part of the hollow cavity 701 into the gas explosion tube 400.

[0048] When the oxygen delivery pipe 300 stops delivering liquid oxygen, the elastic element 705 drives the telescopic pressure rod 704 to move upward and reset. The telescopic pressure rod 704 controls the closing plate 703 to seal the inner diameter hole of the inner ring 702, so that the upper part of the hollow cavity 701 is blocked. Therefore, the liquid oxygen in the gas explosion pipe 400 will not overflow from the connector 700 or be vaporized and lost. The above process does not affect the delivery of liquid oxygen into the gas explosion pipe 400.

[0049] In this embodiment, there is a gap region 707 between the inner ring 702 and the top opening of the hollow cavity 701, and the inner sidewall of the gap region 707 is provided with a slot or buckle for fixing the oxygen delivery tube 300.

[0050] The spacer area 707 is used to install the output end of the oxygen delivery pipe 300 or the output end of the branch pipe 600, and to deliver liquid oxygen into the gas explosion pipe 400; the spacer area 707 uses slots, threads, buckles and other installation-required structures to fix the output end of the oxygen delivery pipe 300 or the output end of the branch pipe 600.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid oxygen environmentally friendly pressure equalization transportation method, characterized in that, The system includes an oxygen supply liquid oxygen tank and a pressurizing device. The oxygen supply liquid oxygen tank is connected to multiple gas explosion pipes via oxygen supply pipes and supplies liquid oxygen to the multiple gas explosion pipes. The pressurizing device is connected to the oxygen supply liquid oxygen tank. During the process of supplying liquid oxygen to the gas explosion pipe, when the pressure inside the liquid oxygen tank is less than the set pressure range, the pressurizing device supplies gaseous oxygen to the liquid oxygen tank so that the pressure inside the liquid oxygen tank reaches the set pressure range. The gas explosion pipe is equipped with a connector for inputting liquid oxygen, which is connected to an oxygen supply pipe; the connector has a hollow cavity that runs vertically through the cavity, and an inner ring is provided at the upper part of the hollow cavity, with the outer periphery of the inner ring abutting against the inner wall of the hollow cavity; the bottom of the inner ring is provided with a vertically movable closing plate, which is used to seal the hollow cavity. The top of the closing plate is provided with multiple telescopic pressure rods that control the up and down movement of the closing plate. The multiple telescopic pressure rods pass through the top circumference of the inner ring from top to bottom and abut against the top of the closing plate. The outer diameter of the closing plate is larger than the inner diameter of the inner ring. The top of the inner ring is provided with an elastic element that drives the telescopic pressure rods to move upward and reset. The middle part of the hollow cavity has an outwardly expanding transition cavity. The transition cavity is connected to the upper part and the lower part of the hollow cavity. The closing plate is located above the transition cavity. When the oxygen delivery tube is inserted into the connector to deliver liquid oxygen, the bottom of the oxygen delivery tube moves toward the upper part of the hollow cavity and presses against the telescopic pressure rod. When the oxygen delivery tube starts to deliver liquid oxygen, the flow pressure of the liquid oxygen will push the closing plate to move downward into the transition cavity, and the liquid oxygen flows from the transition cavity toward the lower part of the hollow cavity into the gas explosion tube. There is a gap between the inner ring and the top opening of the hollow cavity, and the inner wall of the gap is provided with a slot or buckle for fixing the oxygen supply tube connection.

2. The liquid oxygen environmentally friendly pressure equalization transportation method as described in claim 1, characterized in that, The pressurization equipment includes a pressurized liquid oxygen tank and an evaporator that vaporizes liquid oxygen into gaseous oxygen. During the process of supplying liquid oxygen to the gas explosion pipe, when the pressure inside the liquid oxygen tank is less than a set pressure range, the pressurized liquid oxygen tank supplies liquid oxygen to the evaporator. After the evaporator vaporizes the liquid oxygen into gaseous oxygen, the gaseous oxygen is supplied to the liquid oxygen tank.

3. The liquid oxygen environmentally friendly pressure equalization transportation method as described in claim 2, characterized in that, The pressurized liquid oxygen tank is connected to the oxygen delivery liquid oxygen tank via a delivery pipe, and the evaporator is installed on the delivery pipe.

4. The liquid oxygen environmentally friendly pressure equalization transportation method according to any one of claims 1 to 3, characterized in that, A control cabinet is provided, and the delivery pipe is connected to the control cabinet, which controls the opening or closing of the delivery pipe.

5. The liquid oxygen environmentally friendly pressure equalization transportation method as described in claim 4, characterized in that, The control cabinet is equipped with a flow meter. When the control cabinet opens the delivery pipe, the flow meter monitors and measures the volume of liquid oxygen delivered from the pressurized liquid oxygen tank to the evaporator.

6. The liquid oxygen environmentally friendly pressure equalization transportation method as described in claim 5, characterized in that, The control cabinet is equipped with a positioner.

7. The liquid oxygen environmentally friendly pressure equalization transportation method as described in claim 5, characterized in that, The evaporator is mounted on the control cabinet.

8. The liquid oxygen environmentally friendly pressure equalization transportation method according to any one of claims 1 to 3, characterized in that, One end of the oxygen delivery pipe is connected to the oxygen liquid tank, and the other end of the oxygen delivery pipe is provided with multiple branch pipes, which are respectively connected to multiple gas explosion pipes.

Images