A device and method for producing breathing helium-oxygen mixture

Abstract

The application relates to the technical field of gas mixing, and discloses a device and a method for preparing breathing helium-oxygen mixed gas, which comprises a tank body, an inner cylinder, a helium gas inlet element, an oxygen gas inlet element, a drainage channel and a flow control assembly. The helium gas inlet element and the oxygen gas inlet element are used for respectively draining the helium gas and the oxygen gas, so that the helium gas and the oxygen gas are preliminarily mixed in a large range in a primary mixing cavity. Under the control of the intermittent opening and closing of the channel mouth of the drainage channel by the flow control assembly, the preliminarily mixed helium-oxygen mixed gas enters a secondary mixing cavity in batches, and the mixing is further completed. The device realizes the preparation of the helium-oxygen mixed gas, improves the mixing effect, and guarantees the quality of the helium-oxygen mixed gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas mixing, in particular to a device and method for preparing breathing helium-oxygen mixed gas. BACKGROUND

[0002] Gas mixing is that two or more kinds of gas to be mixed enter two or more stages of pressure balancing device through one-way valve to balance the input pressure difference, so as to ensure that the pressure of the component gas and diluent gas before mixing is absolutely the same, and then the flow control valve is adjusted to adjust the flow of various gases according to the desired mixing ratio. Different types of gas need to be fully mixed by corresponding stirring measures when being injected into the same container. At present, the gas mixing device is mostly based on the mutual impact of high-pressure gas to perform mixing operation. However, according to the actual detection, it is found that the mixed gas generated by relying only on the impact mixing between gases often has low mixing rate, which further causes subsequent use problems.

[0003] The prior art discloses a gas mixing device, relating to the field of gas mixing, comprising a mixing container and a positioning pipe. In the application, the annular outer surface of the mixing container is connected with three positioning pipes at the top side position. The positioning pipe is embedded with a sealing bearing. The upper side of the sealing bearing is provided with an adjusting assembly. The adjusting assembly comprises a gear sleeve, a rubber gear and an L-shaped pipe. The positioning pipe is embedded with a gear sleeve. The gear sleeve is inserted with a rubber gear. The center of the rubber gear is sleeved with an L-shaped pipe. The L-shaped pipe penetrates from the sealing bearing to the cavity of the mixing container, so that the inserted sleeve and the stirring blades arranged on the outside are rotated relative to the cavity in the mixing container in the airflow blowing of the high-pressure gas. In the rotation process, different specifications of gas can be fully mixed in the sealed cavity to achieve the purpose of efficient mixing of gas. However, the prior art cannot guarantee that the gas is mixed in place through the rotation of the stirring blade, which easily leads to the problem that different gases are left on the edge of the mixing container, resulting in incomplete mixing. SUMMARY

[0004] The purpose of the present application is to provide a device and method for preparing breathing helium-oxygen mixed gas, to realize the preparation of helium-oxygen mixed gas, improve the mixing effect, ensure the quality of helium-oxygen mixed gas, and ensure the complete mixing of helium-oxygen mixed gas.

[0005] In order to achieve the above object, the present application provides a kind of helium-oxygen mixture production device for breathing, including tank body, the end of the tank body is equipped with helium inlet, the top of the tank body is equipped with oxygen inlet, the bottom of the tank body is equipped with outlet, the helium inlet and the oxygen inlet are respectively equipped with helium gas electric control valve and oxygen electric control valve, further including inner cylinder, the inner cylinder is located in the inside of the tank body, the hollow cavity of the inner cylinder is equipped with helium gas introduction piece communicated with the helium inlet, the oxygen introduction piece in the hollow cavity of the inner cylinder is equipped on the helium gas introduction piece, the cavity between the inner wall of the inner cylinder and the helium gas introduction piece forms primary mixing chamber, the end of the inner cylinder opposite to the helium inlet of tank body and the tank body form secondary mixing chamber, the oxygen inlet is located in the primary mixing chamber, the outlet is located in the secondary mixing chamber, the end of the inner cylinder opposite to the helium inlet of tank body is further equipped with drainage channel communicated with the secondary mixing chamber, the drainage channel is equipped with flow control assembly for controlling helium-oxygen mixture from primary mixing chamber into secondary mixing chamber and drainage mechanism for introducing helium-oxygen mixture in primary mixing chamber into secondary mixing chamber in order.

[0006] The helium gas introduction piece is equipped with gas guide pipe coaxially fixed at both ends in the inside of the tank body, the gas guide pipe is communicated with the helium inlet, a rotating cylinder is communicated and rotationally arranged between the two gas guide pipes, the rotating cylinder is located in the hollow cavity of the inner cylinder, the drainage channel is arranged between one end of the rotating cylinder and the same side end of the inner cylinder, a plurality of air holes are uniformly arranged on the outer surface of the rotating cylinder, and a plurality of centrifugal plates are arranged on the outer surface of the rotating cylinder around the circumferential direction and along the axial direction, and a rotating driver is connected to the gas guide pipe to drive the rotating cylinder to rotate.

[0007] The oxygen introduction piece includes a rotating sleeve, the rotating sleeve is sleeved on the rotating cylinder, a plurality of strip-shaped openings are arranged on the rotating sleeve around the circumferential direction and along the axial direction, a strip-shaped plate is arranged on the edge of each strip-shaped opening and extends inwardly along the radial direction of the rotating sleeve, and concentric rings are arranged at both ends of the rotating sleeve, two clamping plates are symmetrically arranged on the inner wall of the concentric ring corresponding to the position of each centrifugal plate to clamp the centrifugal plate.

[0008] Preferably, the drainage channel includes an inner ring sleeve and an outer ring sleeve, the inner ring sleeve is coaxially sleeved on the end of the rotating cylinder and is fixedly connected thereto, the outer ring sleeve is coaxially sleeved on the inner ring sleeve, the end of the outer ring sleeve is connected to the end of the inner cylinder, the drainage channel communicated with the primary mixing chamber and the secondary mixing chamber is arranged between the inner ring sleeve and the outer ring sleeve, a plurality of stirring rods extending toward the inner wall of the outer ring sleeve are arranged on the outer wall of the inner ring sleeve along the axial direction, and a turbulence rod is arranged between every two adjacent stirring rods corresponding to the inner wall of the outer ring sleeve.

[0009] Preferably, the flow control assembly comprises an opening and closing ring arranged at the channel opening of the flow channel close to the rotating cylinder, and the outer ring is provided with an opening and closing driver for driving the opening and closing ring.

[0010] Preferably, the opening and closing ring comprises a plurality of arc-shaped blocks uniformly distributed along the circumferential direction of the inner ring, each of the arc-shaped blocks is capable of moving along the axial direction of the inner ring, the outer ring is provided with a fixing ring, the fixing ring is provided with a guide strip extending in the moving direction of each of the arc-shaped blocks, and each of the arc-shaped blocks is provided with a sliding groove in sliding connection with the corresponding guide strip.

[0011] Preferably, the sealing gasket is arranged between the arc-shaped blocks and the end of the inner ring.

[0012] Preferably, the opening and closing driver comprises a rotating sleeve coaxially arranged on the outer ring and rotationally connected with the outer ring, each of the arc-shaped blocks is located in the rotating sleeve, a connecting rod is hinged between the edge of the rotating sleeve and each of the arc-shaped blocks, and the outer ring is provided with a reciprocating motor for driving the rotating sleeve to rotate.

[0013] Preferably, the flow mechanism comprises a first flow fan and a second flow fan, the outer ring is provided with an outer sleeve, the end of the outer sleeve is fixedly connected with the end of the tank, an exhaust channel is formed between the outer sleeve and the outer ring, the exhaust channel is in communication with the flow channel and the secondary mixing cavity, the first flow fan is located at the channel opening of the flow channel close to the rotating cylinder and between the inner cylinder and the opening and closing ring, and the second flow fan is located at the communication position of the exhaust channel and the flow channel.

[0014] The application further provides a preparation method of breathing helium-oxygen mixed gas, comprising the following steps:

[0015] S1, helium and oxygen are respectively introduced into the helium inlet and the oxygen inlet through the helium inlet and the oxygen inlet, and the specified flow rate of the introduced helium and oxygen is controlled through the helium electric control valve and the oxygen electric control valve;

[0016] S2, the helium inlet and the oxygen inlet are started to make the helium and the oxygen contact in the form of collision in the primary mixing cavity for large-scale mixing;

[0017] S3, the opening and closing of the channel opening of the flow channel is intermittently controlled through the flow control assembly, so that the helium-oxygen mixed gas enters the secondary mixing cavity in batches and is further mixed in the flow process.

[0018] Compared with the prior art, the present application has the beneficial effects that:

[0019] By the introduction of helium and oxygen through the helium introduction member and the oxygen introduction member respectively, the helium and oxygen are preliminarily mixed in a large range in the primary mixing chamber, and under the control of the intermittent opening and closing of the channel ports of the flow control assembly to the introduction channel, the preliminarily mixed helium-oxygen mixed gas enters the secondary mixing chamber in batches, and further mixing is completed, the production of the helium-oxygen mixed gas is realized, the mixing effect is improved, and the quality of the helium-oxygen mixed gas is ensured.

[0020] Further, by the rotation of the rotating cylinder, the helium is thrown out through the air holes, and under the action of the centrifugal force of the centrifugal plate on the helium, the collision between the helium and the oxygen is promoted to realize the large-range contact between the helium and the oxygen, improve the mixing effect of the helium and the oxygen, and improve the mixing rate of the two; by the large-range contact of the oxygen with the oxygen after entering the rotating sleeve, and the agitation of the helium and the oxygen by the strip plate on the rotating sleeve, the helium and the oxygen are mixed to realize the preliminary mixing of the helium and the oxygen, improve the mixing rate of the helium and the oxygen; and by the rotation of the inner ring sleeve together with the rotating cylinder, the helium-oxygen mixed gas is agitated by the stirring rod in the introduction channel formed between the inner ring sleeve and the outer ring sleeve, the agitated helium-oxygen mixed gas contacts the spoiler rod to be dispersed to realize the further mixing of the helium-oxygen mixed gas, improve the mixing effect of the helium-oxygen mixed gas, and ensure the complete mixing of the helium-oxygen mixed gas. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective structural schematic view of the breathing helium-oxygen mixed gas production device of the embodiment of the present application;

[0022] Figure 2 is a partial perspective structural sectional view of the breathing helium-oxygen mixed gas production device of the embodiment of the present application;

[0023] Figure 3 is another angle of the partial perspective structural sectional view of the breathing helium-oxygen mixed gas production device of the embodiment of the present application;

[0024] Figure 4 is a sectional view of the breathing helium-oxygen mixed gas production device of the embodiment of the present application;

[0025] Figure 5 is a perspective structural sectional view of the breathing helium-oxygen mixed gas production device of the embodiment of the present application;

[0026] Figure 6 is a perspective structural schematic view of the introduction channel and the flow control assembly of the embodiment of the present application;

[0027] Figure 7This is a partial three-dimensional structural cross-sectional view of the drainage channel and flow control component according to an embodiment of the present invention;

[0028] Figure 8 This is a cross-sectional view of the drainage channel and flow control component according to an embodiment of the present invention;

[0029] Figure 9 This is an embodiment of the helium-oxygen mixture preparation device for breathing according to the present invention. Figure 4 Enlarged view of point A;

[0030] Figure 10 This is an embodiment of the helium-oxygen mixture preparation device for breathing according to the present invention. Figure 2 Enlarged diagram of point B.

[0031] In the diagram, 1. Tank body; 11. Helium inlet; 111. Helium electrically controlled valve; 12. Oxygen inlet; 121. Oxygen electrically controlled valve; 13. Outlet; 2. Inner cylinder; 21. Primary mixing chamber; 22. Secondary mixing chamber; 3. Helium inlet; 31. Gas guide pipe; 32. Rotating cylinder; 321. Gas vent; 322. Centrifugal plate; 33. Rotary actuator; 4. Oxygen inlet; 41. Rotating sleeve; 411. Strip inlet; 412. Strip plate; 42. Concentric ring; 42 1. Clamping plate; 5. Drainage channel; 51. Inner ring sleeve; 511. Stirring rod; 52. Outer ring sleeve; 521. Baffle rod; 6. Flow control assembly; 61. Opening and closing ring component; 611. Arc block; 612. Sealing gasket; 62. Opening and closing actuator; 621. Rotating sleeve; 6211. Connecting rod; 622. Reciprocating motor; 63. Fixing ring; 631. Guide strip; 7. Exhaust channel; 71. Outer sleeve; 72. First drainage fan; 73. Second drainage fan. Detailed Implementation

[0032] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] Example one

[0037] As Figures 1-7 shown, the preferred embodiment of the present application for making breathing helium-oxygen mixture device, including the tank 1, the end of the tank 1 is provided with helium inlet 11, the top of the tank 1 is provided with oxygen inlet 12, the bottom of the tank 1 is provided with gas outlet 13, helium inlet 11 and oxygen inlet 12 are respectively provided with helium electric valve 111 and oxygen electric valve 121, characterized in that, further comprising inner cylinder 2, inner cylinder 2 is located in the inside of the tank 1, the hollow cavity of the inner cylinder 2 is provided with helium gas inlet 3 which is communicated with the helium inlet 11, the helium gas inlet 3 is provided with oxygen gas inlet 4 which is located in the hollow cavity of the inner cylinder 2, the cavity between the inner wall of the inner cylinder 2 and the helium gas inlet 3 forms a first mixing chamber 21, the end of the inner cylinder 2 opposite to the helium inlet 11 of the tank 1 and the tank 1 form a second mixing chamber 22, the oxygen inlet 12 is located in the first mixing chamber 21, the gas outlet 13 is located in the second mixing chamber 22, the end of the inner cylinder 2 opposite to the helium inlet 11 of the tank 1 is further provided with drainage channel 5 which is communicated with the second mixing chamber 22, the drainage channel 5 is provided with flow control assembly 6 for controlling the flow of helium-oxygen mixture from the first mixing chamber 21 into the second mixing chamber 22 and drainage mechanism for introducing helium-oxygen mixture in the first mixing chamber 21 into the second mixing chamber 22. In this embodiment, the oxygen gas inlet 4 is arranged around the helium gas inlet 3 and located in the hollow cavity of the inner cylinder 2.

[0038] When helium and oxygen are mixed, helium is first introduced into helium inlet 3 through helium inlet 11, and oxygen is introduced into oxygen inlet 4 through oxygen inlet 12. The flow rates of helium and oxygen are controlled by helium solenoid valve 111 and oxygen solenoid valve 121, respectively. Then, helium inlet 3 and oxygen inlet 4 guide helium and oxygen into primary mixing chamber 21, where they collide and come into contact, resulting in extensive mixing. After mixing for a period of time, flow control component 6 controls the flow channel 5. The port is opened, guiding the helium-oxygen mixture into the flow channel 5. The port of the flow channel 5 is intermittently opened and closed under the control of the flow control component 6, causing the helium-oxygen mixture to enter the flow channel 5 in a gradual manner. The helium-oxygen mixture entering the flow channel 5 then enters the secondary mixing chamber 22 for a secondary mixing process, further promoting the mixing between helium and oxygen. This continues until the helium-oxygen mixture in the primary mixing chamber 21 completely enters the secondary mixing chamber 22, finally completing the complete mixing of the helium-oxygen mixture, which is then discharged and collected through the outlet 13.

[0039] Example 2

[0040] The difference between this embodiment and Embodiment 1 is that, Figures 2-9 As shown, the helium inlet 3 is provided with gas guide pipes 31 coaxially fixed at both ends inside the tank 1. The gas guide pipes 31 are connected to the helium inlet 11. A rotating cylinder 32 is connected between the two gas guide pipes 31 and rotates thereon. The rotating cylinder 32 is located in the hollow cavity 2 of the inner cylinder 2. The flow channel 5 is provided between one end of the rotating cylinder 32 and the same side end of the inner cylinder 2. A number of air holes 321 are evenly opened on the outer surface of the rotating cylinder 32. A number of centrifugal plates 322 are also provided on the outer surface of the rotating cylinder 32 around its circumference and along its axis. A rotary driver 33 is connected to the gas guide pipes 31 to drive the rotating cylinder 32 to rotate.

[0041] During the process of helium gas being introduced into the primary mixing chamber 21 by the helium gas inlet 3, helium gas is introduced into the gas guide pipe 31 through the helium inlet 11. As the pressure is increased, the helium gas enters the rotating cylinder 32. The rotating cylinder 32 is driven to rotate by the rotating driver 33. As the rotating cylinder 32 rotates, the helium gas in it is thrown out through the gas hole 321. The centrifugal plate 322 on the rotating cylinder 32 has the effect of making the helium gas flow outward, so that the helium gas collides with oxygen gas and mixes.

[0042] like Figures 2-9As shown, the oxygen inlet 4 includes a rotating sleeve 41, which is fitted onto the rotating cylinder 32. The rotating sleeve 41 has several strip-shaped openings 411 around its circumference and along its axis. The edge of each strip-shaped opening 411 extends inward along the radial direction of the rotating sleeve 41 with a strip plate 412. Both ends of the rotating sleeve 41 are provided with concentric rings 42. The inner wall of the concentric rings 42 is symmetrically provided with two clamping plates 421 that clamp the centrifugal plates 322 at the positions corresponding to each centrifugal plate 322.

[0043] During the process of oxygen inlet 4 introducing oxygen into the primary mixing chamber 21, oxygen enters the inner cylinder 2 through oxygen inlet 12. Since the concentric ring 42 at the end of the rotating sleeve 41 is provided with a clamp 421 that engages with the centrifugal plate 322 on the rotating cylinder 32, the rotating sleeve 41 and the rotating cylinder 32 are in a connected state. As the rotating cylinder 32 rotates, the rotating sleeve 41 also rotates. As the rotating sleeve 41 rotates, oxygen flows through the strip-shaped opening 411 on its surface to the space between the rotating sleeve 41 and the rotating cylinder 32, thereby colliding with helium. After a large-scale contact between helium and oxygen, since the inner wall of the rotating sleeve 41 is provided with a strip-shaped plate 412, the strip-shaped plate 412 plays a role in stirring the helium and oxygen, thereby mixing helium and oxygen.

[0044] The remaining structure of this embodiment is the same as that of Embodiment 1, and will not be described again here.

[0045] Example 3

[0046] The difference between this embodiment and embodiment two is that, as Figures 2-10 As shown, the flow channel 5 includes an inner ring sleeve 51 and an outer ring sleeve 52. The inner ring sleeve 51 is coaxially sleeved on the end of the rotating cylinder 32 and fixedly connected to it. The outer ring sleeve 52 is coaxially sleeved on the inner ring sleeve 51. The end of the outer ring sleeve 52 is connected to the end of the inner cylinder 2. The inner ring sleeve 51 and the outer ring sleeve 52 form a flow channel 5 that communicates with the primary mixing chamber 21 and the secondary mixing chamber 22. The outer wall of the inner ring sleeve 51 is provided with a plurality of stirring rods 511 extending toward the inner wall of the outer ring sleeve 52 along its axial direction. The inner wall of the outer ring sleeve 52 is provided with a turbulence rod 521 between every two adjacent stirring rods 511.

[0047] When the flow control assembly 6 controls the opening of the flow channel 5, the preliminarily mixed helium-oxygen mixture enters the flow channel 5. With the intermittent opening and closing of the flow channel 5 by the flow control assembly 6, the helium-oxygen mixture in the primary mixing chamber 21 flows into the flow channel 5 in batches. Since the inner ring sleeve 51 is fixedly connected with the rotating cylinder 32, the inner ring sleeve 51 rotates with the rotating cylinder 32. The stirring rod 511 on the inner ring sleeve 51 further stirs the helium-oxygen mixture. The spoiler rod 521 on the outer ring sleeve 52 cooperates with the stirring rod 511 to mix the helium-oxygen mixture, so that the mixing of the helium-oxygen mixture is more complete.

[0048] As shown in Figures 6-10 , the flow control assembly 6 comprises an opening and closing ring 61. The opening and closing ring 61 is arranged at the channel opening of the flow channel 5 close to the rotating cylinder 32. The outer ring sleeve 52 is provided with an opening and closing driver 62 for driving the opening and closing ring 61.

[0049] When the flow control assembly 6 controls the opening and closing of the channel opening of the flow channel 5, the opening and closing ring 61 is driven by the opening and closing driver 62 to open or close the flow channel 5, so as to realize the opening and closing of the channel opening of the flow channel 5.

[0050] As shown in Figures 6-10 , the opening and closing ring 61 comprises a plurality of arc blocks 611. The plurality of arc blocks 611 are uniformly distributed along the circumferential direction of the inner ring sleeve 51. Each arc block 611 can move along the axial direction of the inner ring sleeve 51. The outer ring sleeve 52 is provided with a fixing ring 63. The fixing ring 63 extends in the direction corresponding to the movement of each arc block 611 and is provided with a guide strip 631. Each arc block 611 is provided with a sliding groove in sliding connection with the corresponding guide strip 631.

[0051] When the opening and closing ring 61 is driven by the opening and closing driver 62, the plurality of arc blocks 611 move synchronously along the corresponding guide strips 631 and form a ring structure between the plurality of arc blocks 611. At this time, the channel opening of the flow channel 5 is in a closed state. After the plurality of arc blocks 611 move outward, the channel opening is opened. The opening and closing driver 62 reciprocatingly drives the arc blocks 611 to move, so as to control the helium-oxygen mixture to enter the flow channel 5 in batches.

[0052] As shown in Figure 8 , the embodiment further comprises a sealing gasket 612 between the arc block 611 and the end of the inner ring sleeve 51.

[0053] When the plurality of arc blocks 611 combine to form a ring structure, the sealing gasket 612 on the end face of the arc block 611 contacts the inner ring sleeve 51 to seal, so as to avoid the leakage of the helium-oxygen mixture into the secondary mixing chamber 22 through the flow channel 5 during the mixing process in the primary mixing chamber 21, thereby avoiding the incomplete mixing.

[0054] The remaining structure of this embodiment is the same as that of Embodiment 2, and will not be described again here.

[0055] Example 4

[0056] The difference between this embodiment and embodiment three is that, as Figures 6-8 As shown, the opening and closing driver 62 includes a rotating housing 621, which is coaxially mounted on the outer ring 52 and rotatably connected to the outer ring 52. Each arc-shaped block 611 is located in the rotating housing 621. A connecting rod 6211 is hinged between the edge of the rotating housing 621 and each arc-shaped block 611. The outer ring 52 is provided with a reciprocating motor 622 for driving the rotating housing 621 to rotate.

[0057] When the opening and closing driver 62 is started, the reciprocating motor 622 drives the rotating sleeve 621 to rotate. The connecting rod 6211 on the rotating sleeve 621 drives the arc block 611 to move. The direction of movement of the arc block 611 is controlled according to the rotation direction of the rotating sleeve 621. The reciprocating motor 622 drives the rotating sleeve 621 to rotate back and forth, thereby controlling the intermittent opening and closing of the channel opening of the drainage channel 5.

[0058] like Figure 7 , Figure 8 and Figure 10 As shown, the diversion mechanism includes a first diversion fan 72 and a second diversion fan 73. An outer sleeve 71 is fitted on the outer ring sleeve 52. The end of the outer sleeve 71 is fixedly connected to the end of the tank body 1. An exhaust channel 7 is formed between the outer sleeve 71 and the outer ring sleeve 52. The exhaust channel 7 is connected to the diversion channel 5 and the secondary mixing chamber 22. The first diversion fan 72 is located at the channel opening of the diversion channel 5 near the rotating cylinder 32 and between the inner cylinder 2 and the opening and closing ring 61. The second diversion fan 73 is located at the connection between the exhaust channel 7 and the diversion channel 5.

[0059] As the helium-oxygen mixture enters the flow channel 5, the first flow fan 72 starts to introduce the helium-oxygen mixture from the primary mixing chamber 21, and the second flow fan 73 starts to introduce the helium-oxygen mixture from the flow channel 5 into the exhaust channel 7, so that the helium-oxygen mixture flows rapidly to facilitate the mixing of the helium-oxygen mixture.

[0060] The remaining structure of this embodiment is the same as that of Embodiment 3, and will not be described again here.

[0061] Example 5

[0062] The present invention also provides a method for preparing a helium-oxygen mixture for breathing, comprising the following steps:

[0063] S1, helium and oxygen are respectively introduced into the helium introduction part 3 and the oxygen introduction part 4 through the helium inlet 11 and the oxygen inlet 12, and the specified flow rate of the introduced helium and oxygen is controlled through the helium electric control valve 111 and the oxygen electric control valve 121;

[0064] S2, the helium introduction part 3 and the oxygen introduction part 4 are started, so that the helium and the oxygen are contacted in a collision form in the primary mixing cavity 21 to perform large-scale mixing;

[0065] S3, the flow control assembly 6 controls the intermittent opening and closing of the channel port of the flow channel 5, so that the helium-oxygen mixed gas enters the secondary mixing cavity 22 in batches, and is further mixed in the flow process.

[0066] The present application introduces the helium and the oxygen through the helium introduction part 3 and the oxygen introduction part 4 respectively, so that the helium and the oxygen are preliminarily mixed in a large range in the primary mixing cavity 21, and under the control of the intermittent opening and closing of the flow channel 5 by the flow control assembly 6, the preliminarily mixed helium-oxygen mixed gas enters the secondary mixing cavity 22 in batches, and is further mixed, thereby improving the mixing effect and ensuring the quality of the helium-oxygen mixed gas.

[0067] In summary, the embodiment of the present application provides a helium-oxygen mixed gas production device and method for breathing, which introduces the helium and the oxygen through the helium introduction part and the oxygen introduction part respectively, so that the helium and the oxygen are preliminarily mixed in a large range in the primary mixing cavity, and under the control of the intermittent opening and closing of the flow channel by the flow control assembly, the preliminarily mixed helium-oxygen mixed gas enters the secondary mixing cavity in batches, and is further mixed, thereby realizing the production of the helium-oxygen mixed gas, improving the mixing effect, and ensuring the quality of the helium-oxygen mixed gas; the helium is thrown out through the air holes in the rotating cylinder under the rotation of the rotating cylinder, and under the action of the centrifugal force of the centrifugal plate, the collision between the helium and the oxygen is promoted to realize large-scale contact between the helium and the oxygen, improve the mixing effect of the helium and the oxygen, and improve the mixing rate of the helium and the oxygen; the oxygen is in contact with the helium in a large range after entering the rotating sleeve, and under the agitation of the strip plate on the rotating sleeve, the helium and the oxygen are mixed to realize the preliminary mixing of the helium and the oxygen, and improve the mixing rate of the helium and the oxygen; the inner ring sleeve rotates with the rotating cylinder to promote the agitation of the helium-oxygen mixed gas in the flow channel formed between the inner ring sleeve and the outer ring sleeve, the agitated helium-oxygen mixed gas contacts the spoiler to be dispersed, thereby realizing further mixing of the helium-oxygen mixed gas, improving the mixing effect of the helium-oxygen mixed gas, and ensuring complete mixing of the helium-oxygen mixed gas.

[0068] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A device for making breathing helium-oxygen mixture, comprising a tank (1), the end of the tank (1) is provided with a helium inlet (11), the top of the tank (1) is provided with an oxygen inlet (12), the bottom of the tank (1) is provided with an outlet (13), the helium inlet (11) and the oxygen inlet (12) are respectively provided with a helium electric control valve (111) and an oxygen electric control valve (121), characterized in that, Also include the inner cylinder (2), the inner cylinder (2) is located in the inside of the tank body (1), the hollow cavity of the inner cylinder (2) is provided with helium gas guide piece (3) communicated with the helium inlet (11), the helium gas guide piece (3) is provided with oxygen guide piece (4) in the hollow cavity of the inner cylinder (2), the cavity between the inner wall of the inner cylinder (2) and the helium gas guide piece (3) forms a first mixing chamber (21), the end of the inner cylinder (2) opposite to the helium inlet (11) of the tank body (1) and the tank body (1) form a secondary mixing chamber (22), the oxygen inlet (12) is located in the first mixing chamber (21), the gas outlet (13) is located in the secondary mixing chamber (22), the end of the inner cylinder (2) opposite to the helium inlet (11) of the tank body (1) is also provided with drainage channel (5) communicated with the secondary mixing chamber (22), the drainage channel (5) is provided with flow control assembly (6) for controlling the flow of helium oxygen mixture from the first mixing chamber (21) into the secondary mixing chamber (22) and drainage mechanism for introducing helium oxygen mixture in the first mixing chamber (21) into the secondary mixing chamber (22); The helium gas guide piece (3) is provided with gas guide pipe (31) coaxially fixed in the inside of the tank body (1), the gas guide pipe (31) is communicated with the helium inlet (11), the two gas guide pipes (31) are communicated and rotatably provided with a rotating cylinder (32), the rotating cylinder (32) is located in the hollow cavity of the inner cylinder (2), the drainage channel (5) is arranged between one end of the rotating cylinder (32) and the same side end of the inner cylinder (2), the outer surface of the rotating cylinder (32) is uniformly provided with a plurality of air holes (321), and the outer surface of the rotating cylinder (32) is also provided with a plurality of centrifugal plates (322) around the circumferential direction and along the axial direction thereof, the gas guide pipe (31) is connected with rotating driver (33) for driving the rotating cylinder (32) to rotate; The oxygen guide piece (4) includes rotating sleeve (41), the rotating sleeve (41) is sleeved on the rotating cylinder (32), the rotating sleeve (41) is provided with a plurality of strip-shaped openings (411) around the circumferential direction and along the axial direction thereof, the edge of each strip-shaped opening (411) is provided with strip-shaped plate (412) extending inwardly along the radial direction of the rotating sleeve (41), the two ends of the rotating sleeve (41) are provided with concentric ring (42), the inner wall of the concentric ring (42) is symmetrically provided with two clamping plates (421) clamping the centrifugal plate (322) at the position corresponding to each centrifugal plate (322).

2. A device for producing breathing helium-oxygen mixture gas according to claim 1, characterized in that, The drainage channel (5) comprises an inner ring sleeve (51) and an outer ring sleeve (52), the inner ring sleeve (51) is coaxially sleeved on the end of the rotating cylinder (32) and is fixedly connected with the rotating cylinder (32), the outer ring sleeve (52) is coaxially sleeved on the inner ring sleeve (51), the end of the outer ring sleeve (52) is connected with the end of the inner cylinder (2), the inner ring sleeve (51) and the outer ring sleeve (52) are communicated with the first-stage mixing cavity (21) and the second-stage mixing cavity (22), the outer wall of the inner ring sleeve (51) is provided with a plurality of stirring rods (511) extending towards the inner wall of the outer ring sleeve (52) along the axial direction of the inner ring sleeve (51), and the inner wall of the outer ring sleeve (52) is provided with a spoiler rod (521) corresponding to every two adjacent stirring rods (511).

3. A device for producing breathing helium-oxygen mixture gas according to claim 2, characterized in that, The flow control assembly (6) comprises an opening and closing ring (61), the opening and closing ring (61) is arranged at the channel opening of the drainage channel (5) close to the rotating cylinder (32), and the outer ring sleeve (52) is provided with an opening and closing driver (62) for driving the opening and closing ring (61).

4. A device for producing breathing helium-oxygen mixture gas according to claim 3, wherein The opening and closing ring (61) comprises a plurality of arc blocks (611), the arc blocks (611) are uniformly distributed along the circumferential direction of the inner ring sleeve (51), each arc block (611) can move along the axial direction of the inner ring sleeve (51), the outer ring sleeve (52) is sleeved with a fixing ring (63), the fixing ring (63) is provided with a guide strip (631) extending in the moving direction of each arc block (611), and each arc block (611) is provided with a sliding groove in sliding connection with the corresponding guide strip (631).

5. A device for producing breathing helium-oxygen mixture gas according to claim 4, wherein A sealing gasket (612) is further arranged between the arc block (611) and the end of the inner ring sleeve (51).

6. A device for producing breathing helium-oxygen mixture gas according to claim 5, wherein The opening and closing driver (62) comprises a rotating sleeve shell (621), the rotating sleeve shell (621) is coaxially arranged on the outer ring sleeve (52) and is rotationally connected with the outer ring sleeve (52), each arc block (611) is located in the rotating sleeve shell (621), a connecting rod (6211) is hinged between the edge of the rotating sleeve shell (621) and each arc block (611), and the outer ring sleeve (52) is provided with a reciprocating motor (622) for driving the rotating sleeve shell (621) to rotate.

7. A device for producing breathing helium-oxygen mixtures as claimed in any of the claims 3-6, characterized in that The drainage mechanism comprises a first drainage fan (72) and a second drainage fan (73), an outer sleeve (71) is sleeved on the outer ring sleeve (52), the end of the outer sleeve (71) is fixedly connected with the end of the tank body (1), an exhaust passage (7) is formed between the outer sleeve (71) and the outer ring sleeve (52), the exhaust passage (7) communicates with the drainage passage (5) and the secondary mixing cavity (22), the first drainage fan (72) is located at the passage opening of the drainage passage (5) close to the rotating cylinder (32) and between the inner cylinder (2) and the opening and closing ring piece (61), and the second drainage fan (73) is located at the communication position of the exhaust passage (7) and the drainage passage (5).

8. The method for producing breathing helium-oxygen mixture according to claim 1, comprising the following steps: S1, passing helium and oxygen into the helium inlet member (3) and the oxygen inlet member (4) through the helium inlet (11) and the oxygen inlet (12) respectively, and controlling the specified flow rate of the passing through by the helium electric control valve (111) and the oxygen electric control valve (121); S2, starting the helium inlet member (3) and the oxygen inlet member (4) to make the helium and oxygen contact in the form of collision in the primary mixing cavity (21) to mix in a large range; S3, controlling the intermittent opening and closing of the passage opening of the drainage passage (5) by the flow control assembly (6) to make the helium-oxygen mixture enter the secondary mixing cavity (22) in batches and further mix in the process of flowing.

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