Zero-leakage helium filling device

Abstract

The utility model discloses a zero-leakage helium filling device, and relates to the technical field of rare gas filling, the zero-leakage helium filling device comprises a gas storage tank of which the side wall is provided with supercharging equipment, the exhaust end of the supercharging equipment is provided with a gas filling pipe, the tail end of the gas filling pipe is fixedly connected with a detection pipe, and the peripheral side of the inner wall of the detection pipe is provided with a plurality of vent grooves. Through cooperative arrangement of the detection pipe, the vent groove, the sealing seat, the magnetic bead, the rubber sleeve and other structures, when the inflation nozzle is inserted into the detection pipe for inflation, the magnetic bead is attracted to the end of the inflation nozzle through magnetic force; under the action of magnetic force, a sealing ball structure formed by the magnetic bead and the rubber sleeve can be pulled to move into the sealing seat again for sealing, so that residual helium in the detection pipe is prevented from leaking out, and the problem that a valve is closed after inflation of an existing inflation device is completed is avoided as much as possible; and a small amount of helium is remained in the inflating hose at the tail end and cannot be recycled and stored, so that a large amount of helium is wasted.

Description

Technical Field

[0001] This application relates to the technical field of rare gas filling, and particularly to a helium zero-leakage filling device. Background Art

[0002] Helium, as an important industrial gas, is widely used in fields such as aerospace, medical treatment, and scientific research. However, due to the rarity and high value of helium, the leakage problem during its filling process has always attracted much attention.

[0003] In the existing method, helium is generally stored in a large gas storage cylinder. When in use, the valve installed on the inflation hose is opened, and the helium in the large gas storage cylinder is filled into the sub-cylinder through the inflation hose. Since the inflation nozzle of the sub-cylinder needs to be connected to the inflation hose during inflation, the valve cannot be installed at the end of the inflation hose. Therefore, after the valve is closed after inflation, a small amount of helium still remains in the inflation hose shaft at the end section. After the inflation nozzle of the sub-cylinder is disassembled, the helium will be directly discharged into the external environment, resulting in waste of helium. Content of the Utility Model

[0004] The purpose of the present utility model is to solve or at least alleviate the problem that after the valve is closed after inflation in the existing inflation device, a small amount of helium still remains in the inflation hose at the end section and cannot be recovered and stored, resulting in a large amount of waste of helium.

[0005] To achieve the above purpose, the present utility model adopts the following technical solution:

[0006] A helium zero-leakage filling device, comprising a gas storage tank with a pressurization device installed on its side wall. An inflation pipe is installed at the exhaust end of the pressurization device. The end of the inflation pipe is fixedly connected to a detection pipe. A plurality of ventilation grooves are provided on the circumferential side of the inner wall of the detection pipe. The end of the detection pipe far from the inflation pipe is fixedly connected to a sealing seat. A magnetic bead that can move along the inner cavity of the detection pipe is embedded in the inner cavity of the detection pipe. The outer surface of the magnetic bead is coated with a rubber sleeve in a spherical structure. The size of the rubber sleeve is adapted to the size of the inner cavity of the sealing seat. A clamping structure is fixedly installed on the sealing seat. An inflation nozzle with an inflation hole passes through the sealing seat and extends into the detection pipe. The inflation nozzle is sealed and fixed by the clamping structure during inflation.

[0007] By adopting the above technical solutions, during use, the user inserts the inflation nozzle of the sub-cylinder through the sealing seat into the detection tube. By pushing the end of the inflation nozzle, a sealing ball structure formed by a rubber sleeve and a magnetic bead in the inner cavity of the sealing seat is pushed out of the sealing seat. At this time, the air extraction pump is started to input helium into the detection tube. The helium gas passes over the sealing ball structure through the ventilation groove and enters the inflation nozzle through the inflation holes opened on the side wall of the end of the inflation nozzle, realizing the filling of the sub-cylinder. When the user pulls out the inflation nozzle after inflation, the magnetic bead in the sealing ball structure is adsorbed to the end of the inflation nozzle under the action of magnetic force. When the inflation nozzle is pulled out, it can be redrawn into the inner cavity of the sealing seat under the combined action of the traction of the inflation nozzle and the air pressure for sealing, preventing the remaining helium gas in the detection tube from leaking. This effectively avoids the problem that a small amount of helium gas remains in the inflation hose at the end and cannot be recycled and stored after the existing inflation device closes the valve after inflation, resulting in a large waste of helium gas.

[0008] Optionally, a plurality of symmetrically distributed support legs are fixedly connected to the peripheral side of the bottom end of the gas storage tank, and the bottom end height of the support legs is lower than the bottom height of the gas storage tank.

[0009] By adopting the above technical solutions, a plurality of symmetrically distributed support legs are provided to support the gas storage tank, improving the stability of the gas storage tank when placed and minimizing the risk of the gas storage tank tipping over. The bottom end height of the support legs is lower than the bottom height of the gas storage tank, which can support the bottom of the gas storage tank away from the ground, reducing the corrosion of the bottom of the gas storage tank by ground moisture.

[0010] Optionally, the pressurizing device includes an air extraction pump fixedly connected to the outer side wall of the gas storage tank through a mounting plate, and the air extraction end of the air extraction pump is connected to the inner cavity of the gas storage tank through a pipeline.

[0011] By adopting the above technical solutions, an air extraction pump is provided to increase the air pressure, facilitating the subsequent filling of helium.

[0012] Optionally, a through hole for inserting the inflation nozzle is opened at one end of the sealing seat connected to the clamping structure, and the through hole is sealed after the magnetic bead moves into the sealing seat.

[0013] By adopting the above technical solutions, the through hole is provided so that when the user inflates, the inflation nozzle of the sub-cylinder can be inserted into the detection tube through the through hole of the sealing seat, enabling the air in the detection tube to enter the inflation nozzle through the inflation holes for inflating the sub-cylinder.

[0014] Optionally, the inflation nozzle is made of a material that can be adsorbed by a magnetic material, and the length of the section of the inflation nozzle inserted into the inner cavity of the detection tube during inflation is not less than half of the inner diameter length of the sealing seat.

[0015] By adopting the above technical solution, the inflation nozzle is made of a material that can be adsorbed by magnetic materials, enabling the magnetic bead to be adsorbed at the end of the inflation nozzle. When the inflation nozzle is removed after inflation, it can drive the magnetic bead to move into the sealing seat, sealing the through hole opened on the sealing seat to prevent the helium gas remaining in the test tube from leaking out and causing waste.

[0016] Optionally, the clamping structure includes a clamping tube with a frustum-shaped free end. A plurality of symmetrically arranged contraction grooves are opened on the free end of the clamping tube, and an internal screw ring is also screwed on the outer surface of the free end of the clamping tube.

[0017] By adopting the above technical solution, when the user inserts the inflation nozzle of the gas cylinder into the test tube through the inner cavity of the clamping tube, the internal screw ring can be screwed to squeeze the free end of the clamping tube, causing the free end of the clamping tube to contract inward along the contraction grooves until the inner wall of the free end of the clamping tube is in close fit with the inflation nozzle, realizing the clamping and fixing of the inflation nozzle.

[0018] Optionally, a pressure sensor and a temperature sensor with detection ends extending into the inner cavity of the test tube are provided on the outer surface of the test tube. The pressure sensor and the temperature sensor are symmetrically arranged, and both the pressure sensor and the temperature sensor are fixedly connected to the outer wall of the test tube.

[0019] By adopting the above technical solution, the pressure sensor and the temperature sensor are provided to detect the temperature and air pressure of the helium gas in the test tube, facilitating the user to judge whether the gas cylinder is full through the temperature value and the air pressure value.

[0020] Optionally, a valve is also fixedly installed on the inflation tube.

[0021] By adopting the above technical solution, after inflation is completed, the inflation tube can be closed through the valve for secondary sealing, minimizing the leakage of the helium gas stored in the gas storage tank.

[0022] In summary, the beneficial effects of the present application are as follows:

[0023] Through the coordinated setting of structures such as the test tube, ventilation groove, sealing seat, magnetic bead, and rubber sleeve in the present application, when the inflation nozzle is inserted into the test tube for inflation, the magnetic bead is adsorbed at the end of the inflation nozzle by magnetic force. When the inflation nozzle is pulled out after inflation, it can, under the action of magnetic force, traction the sealing ball structure composed of the magnetic bead and the rubber sleeve to move back into the sealing seat for sealing, preventing the remaining helium gas in the test tube from leaking out, and minimizing the problem that in the existing inflation device, after the valve is closed after inflation, there is still a small amount of helium gas remaining in the inflation hose at the end that cannot be recovered and stored, resulting in a large waste of helium gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present application;

[0025] Figure 2It is a schematic diagram of the internal structure of the detection tube of this application;

[0026] Figure 3 It is a schematic cross-sectional structure diagram of the detection tube of this application;

[0027] Figure 4 It is an installation schematic diagram of the clamping structure of this application.

[0028] Explanation of reference numerals: 1, gas storage tank; 2, support leg; 3, air extraction pump; 4, charging pipe; 5, detection tube; 6, ventilation groove; 7, sealing seat; 8, clamping tube; 9, contraction groove; 10, internal screw ring; 11, magnetic bead; 12, rubber sleeve; 13, pressure sensor; 14, temperature sensor; 15, inflation nozzle; 16, inflation hole. Detailed implementation manners

[0029] The following further describes this application in detail Figures 1-4 with reference to the accompanying drawings.

[0030] Please refer to Figures 1-3 , a helium zero-leakage filling device, including a gas storage tank 1 with a pressurization device installed on the side wall, and a charging pipe 4 installed at the exhaust end of the pressurization device. During use, the helium in the gas storage tank 1 is pumped out by the pressurization device, and after the air pressure is increased by the pressurization device, the helium is filled along the charging pipe 4.

[0031] The end of the charging pipe 4 is fixedly connected to a detection tube 5. A plurality of ventilation grooves 6 are provided on the circumferential side of the inner wall of the detection tube 5. A sealing seat 7 is fixedly connected to the end of the detection tube 5 away from the charging pipe 4. A magnetic bead 11 that can move along the inner cavity of the detection tube 5 is embedded in the inner cavity of the detection tube 5. A rubber sleeve 12 with a spherical structure is coated on the outer surface of the magnetic bead 11. The rubber sleeve 12 and the magnetic bead 11 together form a sealed ball structure. The size of the sealed ball structure is adapted to the size of the inner cavity of the sealing seat 7. After the sealed ball structure moves into the inner cavity of the sealing seat 7, it can block the end of the detection tube 5 away from the charging pipe 4, and try to avoid the leakage of helium in the detection tube 5.

[0032] A clamping structure is fixedly installed on the sealing seat 7. An inflation nozzle 15 with an inflation hole 16 passes through the sealing seat 7 and extends into the detection tube 5. The inflation nozzle 15 is sealed and fixed by the clamping structure during inflation, preventing the inflation nozzle 15 from slipping out of the detection tube 5 under the influence of air pressure during the inflation process.

[0033] Refer to Figure 1A plurality of symmetrically distributed supporting legs 2 are fixedly connected to the periphery of the bottom end of the gas storage tank 1, and the bottom end height of the supporting legs 2 is lower than the bottom height of the gas storage tank 1. A plurality of symmetrically distributed supporting legs 2 are provided to support the gas storage tank 1, improve the stability of the gas storage tank 1 when it is placed, and try to avoid the gas storage tank 1 from tipping over. The bottom end height of the supporting legs 2 is lower than the bottom height of the gas storage tank 1, and the bottom of the gas storage tank 1 can be supported to be separated from the ground, thereby reducing the corrosion of the bottom of the gas storage tank 1 by ground moisture.

[0034] Reference Figure 1 The pressurizing device includes an air pump 3 fixedly connected to the outer wall of the gas storage tank 1 through a mounting plate, and the air extraction end of the air pump 3 is connected to the inner cavity of the gas storage tank 1 through a pipeline. The air pump 3 is provided to increase the air pressure to facilitate the subsequent filling of helium.

[0035] Reference Figure 2 The end of the sealing seat 7 connected to the clamping structure is provided with a through hole for inserting the inflation nozzle 15, and the magnetic bead 11 moves into the sealing seat 7 to seal the through hole. The through hole is provided so that when inflating, the user can insert the inflation nozzle 15 of the gas distribution bottle through the through hole through the sealing seat 7 into the detection tube 5, so that the air in the detection tube 5 can enter the inflation nozzle 15 through the inflation hole 16 to inflate the gas distribution bottle.

[0036] Reference Figure 2 The inflation nozzle 15 is made of a material that can be adsorbed by magnetic materials. When inflating, the length of the inflation nozzle 15 inserted into the inner cavity of the detection tube 5 is not less than half of the inner diameter of the sealing seat 7. The inflation nozzle 15 is made of a material that can be adsorbed by magnetic materials, so that the magnetic beads 11 can be adsorbed on the end of the inflation nozzle 15. When the inflation nozzle 15 is removed after the inflation is completed, the magnetic beads 11 can be driven to move into the sealing seat 7 to seal the through hole opened on the sealing seat 7, thereby preventing the helium retained in the detection tube 5 from leaking out and causing waste.

[0037] Reference Figure 4 The clamping structure includes a clamping tube 8 with a truncated cone-shaped free end, a plurality of symmetrically arranged contraction grooves 9 are provided on the free end of the clamping tube 8, and an inner screw ring 10 is screwed on the outer surface of the free end of the clamping tube 8. When the user inserts the inflating nozzle 15 of the gas cylinder into the detection tube 5 through the inner cavity of the clamping tube 8, the inner screw ring 10 can be screwed to squeeze the free end of the clamping tube 8, so that the free end of the clamping tube 8 contracts inward along the contraction groove 9 until the inner wall of the free end of the clamping tube 8 is tightly fitted with the inflating nozzle 15, thereby clamping and fixing the inflating nozzle 15.

[0038] Reference Figure 1The outer surface of the detection tube 5 is provided with a pressure sensor 13 and a temperature sensor 14, whose detection ends extend into the inner cavity of the detection tube 5. The pressure sensor 13 and the temperature sensor 14 are symmetrically arranged, and the pressure sensor 13 and the temperature sensor 14 are both fixedly connected to the outer wall of the detection tube 5. The pressure sensor 13 and the temperature sensor 14 are arranged to detect the temperature and pressure of the helium in the detection tube 5, so that the user can judge whether the gas cylinder is full by the temperature value and the pressure value.

[0039] Reference Figure 1 A valve is also fixedly installed on the inflation pipe 4. After the inflation is completed, the inflation pipe 4 can be closed by the valve to perform secondary sealing to avoid leakage of the helium stored in the gas storage tank 1 as much as possible.

[0040] The implementation principle of the present application is as follows: when in use, the user inserts the inflation nozzle 15 of the gas distribution bottle through the sealing seat 7 into the detection tube 5, and pushes the sealing ball structure formed by the rubber sleeve 12 and the magnetic bead 11 in the inner cavity of the sealing seat 7 through the end of the inflation nozzle 15, and pushes the sealing ball structure out of the sealing seat 7. At this time, the vacuum pump 3 is started to input helium into the detection tube 5, and the helium passes through the sealing ball structure through the ventilation groove 6 and enters the inflation nozzle 15 through the inflation hole 16 opened on the side wall of the end of the inflation nozzle 15, so as to fill the gas distribution bottle. When the inflation is completed, when the user pulls out the inflation nozzle 15, the magnetic bead 11 in the sealing ball structure is adsorbed on the end of the inflation nozzle 15 under the action of magnetic force. When the inflation nozzle 15 is pulled out, it can be moved back to the inner cavity of the sealing seat 7 for sealing under the combined action of the traction of the inflation nozzle 15 and the air pressure, thereby preventing the remaining helium in the detection tube 5 from leaking out. This avoids the problem that after the existing inflation device closes the valve after inflation is completed, a small amount of helium remains in the inflation hose at the end that cannot be recovered and stored, resulting in a large amount of helium waste.

[0041] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A helium zero-leakage filling device, comprising a gas storage tank (1) with a pressurizing device installed on the side wall, a gas charging pipe (4) installed on the exhaust end of the pressurizing device, and a detection tube (5) fixedly connected to the end of the gas charging pipe (4), characterized in that: A plurality of ventilation grooves (6) are provided on the circumferential side of the inner wall of the detection tube (5); one end of the detection tube (5) away from the inflation tube (4) is fixedly connected to a sealing seat (7); a magnetic bead (11) is embedded in the inner cavity of the detection tube (5) and is movable along the inner cavity of the detection tube (5); the outer surface of the magnetic bead (11) is covered with a rubber sleeve (12) of a spherical structure; the size of the rubber sleeve (12) is adapted to the size of the inner cavity of the sealing seat (7); a clamping structure is fixedly mounted on the sealing seat (7); an inflation nozzle (15) provided with an inflation hole (16) penetrates the sealing seat (7) and extends into the detection tube (5); the inflation nozzle (15) is sealed and fixed by the clamping structure during inflation.

2. The helium zero-leakage filling device according to claim 1, characterized in that: A plurality of symmetrically distributed support legs (2) are fixedly connected to the periphery of the bottom end of the gas storage tank (1), and the bottom end height of the support legs (2) is lower than the bottom height of the gas storage tank (1).

3. The helium zero-leakage filling device according to claim 1, characterized in that: The pressurizing device comprises an air pump (3) fixedly connected to the outer wall of the gas storage tank (1) via a mounting plate, and an air extraction end of the air pump (3) is connected to the inner cavity of the gas storage tank (1) via a pipeline.

4. The helium zero-leakage filling device according to claim 1, characterized in that: One end of the sealing seat (7) connected to the clamping structure is provided with a through hole for inserting the inflation nozzle (15), and the magnetic bead (11) seals the through hole after moving into the sealing seat (7).

5. The helium zero-leakage filling device according to claim 4, characterized in that: The inflation nozzle (15) is made of a material that can be adsorbed by magnetic materials. When inflating, the inflation nozzle (15) is inserted into the inner cavity of the detection tube (5) to a length that is not less than half the inner diameter of the sealing seat (7).

6. The helium zero-leakage filling device according to claim 5, characterized in that: The clamping structure comprises a clamping tube (8) having a truncated cone-shaped free end, a plurality of symmetrically arranged contraction grooves (9) being provided on the free end of the clamping tube (8), and an inner screw ring (10) being screwed on the outer surface of the free end of the clamping tube (8).

7. The helium zero-leakage filling device according to claim 1, characterized in that: The outer surface of the detection tube (5) is provided with a pressure sensor (13) and a temperature sensor (14), the detection ends of which extend into the inner cavity of the detection tube (5); the pressure sensor (13) and the temperature sensor (14) are symmetrically arranged, and the pressure sensor (13) and the temperature sensor (14) are both fixedly connected to the outer wall of the detection tube (5).

8. The helium zero-leakage filling device according to claim 1, characterized in that: A valve is also fixedly mounted on the inflation tube (4).

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