Mixed gas release device

Abstract

The invention discloses a mixed gas release device which comprises a valve body and a gas inlet pipe, and the valve body is used for being connected with a gas cylinder; the air inlet pipe is connected to the lower end of the valve body in a threaded mode and extends downwards, a plurality of air inlet hole sets are formed in the circumferential wall of the air inlet pipe and distributed at intervals in the axial direction of the air inlet pipe, each air inlet hole set comprises a plurality of air inlet holes, the air inlet holes in the same set are evenly distributed in the circumferential direction of the air inlet pipe, and the air inlet holes communicate with an inner cavity of the air inlet pipe. The air inlet holes spirally extend upwards, openings, close to the inner wall of the air inlet pipe, of the air inlet holes extend in the tangential direction of an inner cavity of the air inlet pipe, and the spiral directions of the air inlet holes of every two adjacent air inlet hole sets are opposite. A plurality of axially distributed air inlet hole groups are formed in the peripheral wall of the air inlet pipe, so that different air inlet hole groups can correspond to different air layers, different air can be conveniently guided out of the air inlet pipe, the air inlet holes are uniformly distributed in the peripheral direction of the air inlet pipe, the air inlet pressure is stable, and the vibration of the air inlet pipe is reduced.

Description

Technical Field

[0001] This invention relates to a gas release device, and more particularly to a mixed gas release device. Background Technology

[0002] In some operating conditions, gas cylinders store two or more mixed gases. The common practice in the field is to mix the gases during storage so that the released gases are fully mixed.

[0003] However, this method is only suitable for situations where the gas needs to be used as soon as possible after filling. After the gas cylinder is left for a period of time, the mixed gas will separate into layers, which will cause the mixing ratio of the released gas to not meet the requirements. In addition, the high-pressure gas will cause erosion of the gas outlet pipe when it flows, resulting in turbulent gas flow. This will further cause the inner wall of the pipe to be eroded and thinned, accompanied by vibration and whistling, creating safety hazards. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a gas release device that can reduce the erosion of pipelines by high-pressure gas and the vibration during gas flow.

[0005] According to an embodiment of the present invention, a gas mixture release device includes a valve body and an inlet pipe. The valve body is used to connect to a gas cylinder, and the gas cylinder is used to load a gas mixture. The inlet pipe is threaded to the lower end of the valve body. The inlet pipe extends downward and is configured to insert into the inner cavity of the gas cylinder. A plurality of sets of inlet holes are provided on the peripheral wall of the inlet pipe. The plurality of sets of inlet holes are spaced apart along the axial direction of the inlet pipe. Each set of inlet holes includes a plurality of inlet holes evenly distributed around the circumference of the inlet pipe. Each inlet hole includes an inlet formed on the outer wall of the inlet pipe and an outlet formed on the inner wall of the inlet pipe, as well as an extension channel extending from the inlet to the outlet. The extension channel can guide the gas mixture to enter the inner cavity of the inlet pipe from the outlet and then flow spirally upward along the inner wall of the inlet pipe. The gas mixture guided by the extension channels of two adjacent sets of inlet holes flows in opposite spiral directions along the inner wall of the inlet pipe.

[0006] It has at least the following beneficial effects:

[0007] The intake pipe features several axially distributed groups of intake holes on its circumferential wall. These groups of holes can accommodate different gas layers, facilitating the extraction of different gases from the intake pipe. The even distribution of the intake holes around the circumference of the intake pipe ensures stable intake pressure and reduces pipe vibration. The spiral direction of the intake holes prevents direct impact on the inner wall of the intake pipe as gas enters, reducing the probability of erosion. Furthermore, the arrangement of multiple intake holes creates a spiral upward flow of air, reducing the impact force of direct inflow and enhancing the mixing efficiency of the two gases. The opposite spiral directions of adjacent intake hole groups balance the torque on the intake pipe, further reducing vibration and extending its service life.

[0008] According to some embodiments of the present invention, the inner peripheral wall of the intake pipe is provided with a plurality of spiral protrusions, which are evenly distributed around the circumference of the intake pipe. The spiral protrusions extend from the lower end of the intake pipe to the upper end of the intake pipe, and a spiral guide groove is formed between two adjacent spiral protrusions.

[0009] According to some embodiments of the present invention, a plug is threadedly connected to the lower end of the intake pipe, and the plug is used to seal the lower end of the intake pipe.

[0010] According to some embodiments of the present invention, the plug is made of a rubber block.

[0011] According to some embodiments of the present invention, a threaded connection hole is provided at the lower end of the valve body, a rubber sleeve is embedded in the threaded connection hole, one end of the rubber sleeve is open, and the other end of the rubber sleeve is provided with an air outlet, the air outlet communicates with the valve body, the threaded connection hole is used to thread-connect the upper end of the air inlet pipe, the rubber sleeve is used to seal the gap between the air inlet pipe and the threaded connection hole, and the air outlet communicates with the inner cavity of the air inlet pipe and the pressure reducing cavity of the valve body.

[0012] According to some embodiments of the present invention, the outer wall of the air intake pipe is provided with a corrosion-resistant layer, which is a corrosion-resistant film or a corrosion-resistant coating.

[0013] According to some embodiments of the present invention, the valve body includes a housing and a valve core. The housing is provided with an air outlet channel, a pressure reducing chamber and a docking channel. The docking channel is connected to the air outlet channel through the pressure reducing chamber and is connected to the air inlet pipe through a threaded connection hole. The valve core is slidably connected to the pressure reducing chamber in a vertical direction. The valve core moves up and down in the pressure reducing chamber to control the air outlet flow rate of the air outlet channel.

[0014] According to some embodiments of the present invention, a buffer box is provided on the outer shell, and the end of the gas outlet channel away from the docking channel is connected to the buffer box. The buffer box is used to output gas at the end away from the gas outlet channel.

[0015] According to some embodiments of the present invention, the outer shell is provided with a pressure relief channel, the pressure relief channel is connected to the docking channel, and a protective cover is snapped onto the outer shell. The protective cover is used to block the pressure relief channel and is connected to the outer shell by a traction rope.

[0016] According to some embodiments of the present invention, the intake pipe is made of stainless steel.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the gas mixture release device according to an embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the gas mixture release device is shown. Figure 3 for Figure 1 A three-dimensional cross-sectional view of the intake pipe of the mixture release device; Figure 4 for Figure 3 The diagram shown illustrates the structure of the intake pipe; Figure 5 for Figure 3 The cross-sectional view of the intake pipe shown; Figure 6 for Figure 3 A half-sectional schematic diagram of the intake pipe is shown; Figure 7 for Figure 3 The diagram shown illustrates the intake pipe with a plug.

[0019] Icon labels: Valve body 100, threaded connection hole 110; Rubber sleeve 120, vent 121; 130 outer casing, 131 air outlet channel, 132 docking channel, 133 pressure reducing chamber, 134 buffer box, 135 pressure relief channel, 136 protective cover; Valve core 140; Air intake pipe 200, air intake port group 210, air intake port 211, spiral protrusion 220; Plug 240, through hole 241. Detailed Implementation

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying 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, they should not be construed as limiting this invention.

[0021] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 7 The present invention discloses a mixed gas release device, including a valve body 100 and an air inlet pipe 200. The valve body 100 is used to connect to a gas cylinder, and the gas cylinder is used to load the mixed gas. The intake pipe 200 is threaded to the lower end of the valve body 100. The intake pipe 200 extends downward and is configured to be inserted into the inner cavity of the gas cylinder. Several sets of intake hole groups 210 are provided on the peripheral wall of the intake pipe 200. The several sets of intake hole groups 210 are distributed at intervals along the axial direction of the intake pipe 200. Each set of intake hole groups 210 includes several intake holes 211 evenly distributed around the circumference of the intake pipe 200. The intake hole 211 includes an inlet 211a opened on the outer wall of the intake pipe 200 and an outlet 211c opened on the inner wall of the intake pipe 200, as well as an extension channel 211b extending from the inlet 211a to the outlet 211c. The extension channel 211b can guide the mixed gas from the outlet 211c into the inner cavity of the intake pipe 200 and then spiral upward along the inner wall of the intake pipe. The mixed gas guided by the extension channels 211b of two adjacent sets of intake hole groups 210 has opposite spiral directions along the inner wall of the intake pipe.

[0024] It should be noted that the intake pipe 200 is provided with several axially distributed intake hole groups 210 on its peripheral wall, so that different intake hole groups 210 can correspond to different gas stratifications, making it easy to export different gases from the intake pipe 200. The uniform distribution of the intake holes 211 around the circumference of the intake pipe 200 makes the intake pressure stable and reduces the vibration of the intake pipe 200. The spiral direction of the intake holes 211 ensures that the gas does not directly impact the inner wall of the intake pipe 200 when it enters the intake pipe 200, reducing the probability of the intake pipe 200 being eroded. Furthermore, the arrangement of several intake holes 211 makes the intake air spiral upward, which can reduce the impact force of direct inflow and enhance the mixing efficiency of the two gases. The spiral directions of the intake holes 211 of two adjacent intake hole groups 210 are set in opposite directions, so that the torque on the intake pipe 200 can be balanced, further reducing the vibration of the intake pipe 200 and extending the service life of the intake pipe 200.

[0025] Reference Figures 3 to 7 It should be noted that the uniform distribution of several air intake holes 211 around the circumference of the intake pipe 200 means that the air intake holes 211 are evenly distributed around the circumference of the intake pipe 200, that is, the included angle between two adjacent air intake holes 211 in the circumference of the intake pipe 200 is the same, and the direction of the air intake holes 211 is spiral upward. In order to further reduce the intake pressure, the opening of the air intake hole 211 near the inner wall of the intake pipe 200 is made larger, and the opening of the air intake hole 211 away from the inner wall of the intake pipe 200 is made smaller. That is, the same air intake hole 211 has openings with different cross-sectional areas. According to the Venturi effect, the intake pressure is reduced. The gas pressure inside pipe 200 is reduced to ensure the safety of the output gas. Conversely, the opening of the air inlet 211 near the inner wall of the air inlet pipe 200 is made smaller, while the opening away from the inner wall of the air inlet pipe 200 is made larger. This can enhance the intake pressure and maintain a continuous gas pressure output. There are four air inlets 211 distributed on the same air inlet group 210. The two centrally symmetrical air inlets 211 are set to the first opening condition, and the other pair of centrally symmetrical air inlets 211 are set to the second opening condition. This allows the gas in the cylinder to maintain a constant pressure output for a longer period of time.

[0026] Reference Figure 6The inner circumferential wall of the intake pipe 200 is provided with several spiral protrusions 220 (not fully shown in the figure). These spiral protrusions 220 are evenly distributed around the circumference of the intake pipe 200, extending from the lower end to the upper end. A spiral guide groove is formed between adjacent spiral protrusions 220. It can be understood that the spiral protrusions 220 serve a guiding function, and the sidewalls of the spiral protrusions 220 also bear the gas. Even if the gas enters the intake pipe 200 spirally, it will more or less cause erosion to the inner wall of the intake pipe 200. The spiral protrusions 220... Not only can the spiral flow of gas be guided, but the sidewall of the spiral ridge 220 can also be used to meet the impact of the gas. Even if the spiral ridge 220 is eroded and worn, the main body of the intake pipe 200 can still be used, which is equivalent to extending the service life of the intake pipe 200. Especially during the repeated use of gas cylinders, some impurities or dust often enter the gas cylinder, along with the rust or iron filings inside the gas cylinder itself. These dust, impurities, rust or iron filings are important substances that erode the intake pipe 200. Therefore, it is necessary to set the service life of the intake pipe 200 and reduce the vibration of the intake pipe 200 during the gas delivery process.

[0027] Reference Figure 7 The lower end of the air intake pipe 200 is threaded with a plug 240, which is used to seal the lower end of the air intake pipe 200. Understandably, when the plug 240 seals the lower end of the air intake pipe 200, gas only enters the air intake pipe 200 through the air inlet 211. This is one operating state. When a large amount of gas needs to be output from the bottom of the gas cylinder (this is determined during the filling stage), the plug 240 can be removed, allowing more gas from the bottom of the gas cylinder to enter. The plug 240 is mainly used to adjust the air intake ratio.

[0028] In some embodiments, the plug 240 is made of a rubber block.

[0029] Reference Figure 1 and Figure 2 The lower end of the valve body 100 is provided with a threaded connection hole 110, and a rubber sleeve 120 is embedded in the threaded connection hole 110. One end of the rubber sleeve 120 is open, and the other end of the rubber sleeve 120 is provided with an air outlet 121. The air outlet 121 is connected to the valve body 100. The threaded connection hole 110 is used to thread the upper end of the air intake pipe 200. The rubber sleeve 120 is used to seal the gap between the air intake pipe 200 and the threaded connection hole 110. It can be understood that the rubber sleeve 120 is cylindrical and mainly serves as a gasket. The outer peripheral wall of the rubber sleeve 120 is provided with an external thread that matches the internal thread of the threaded connection hole 110, which facilitates the installation of the rubber sleeve 120. The rubber sleeve 120 is a replaceable part. The air outlet 121 connects the inner cavity of the air intake pipe 200 with the pressure reducing chamber 133 of the valve body 100.

[0030] In some embodiments, the outer wall of the air intake pipe 200 is provided with a corrosion-resistant layer, which is a corrosion-resistant film or a corrosion-resistant coating. It is understood that the corrosion-resistant film includes nylon film or ceramic film, etc., and the corrosion-resistant coating includes chromium plating or nickel plating, etc.

[0031] Reference Figure 1 and Figure 2 The valve body 100 includes a housing 130 and a valve core 140. The housing 130 is provided with an air outlet channel 131, a pressure reducing chamber 133 and a docking channel 132. The docking channel 132 is connected to the air outlet channel 131 through the pressure reducing chamber 133 and is connected to the air inlet pipe 200 through a threaded connection hole 110. The valve core 140 is slidably connected to the pressure reducing chamber 133 in a vertical direction. The valve core 140 moves up and down in the pressure reducing chamber 133 to control the air outlet flow rate of the air outlet channel 131.

[0032] In some embodiments, the valve core 140 is provided with a guide groove, and the gas outlet channel 131 and the pressure relief channel 135 each correspond to a guide groove. The valve core 140 is trapezoidal in shape, with the narrow end of the trapezoid at the bottom and the wide end at the top. Similarly, the shape of the pressure reducing chamber 133 is adapted to the valve core 140. When the valve core 140 rises a certain distance, a gap is formed between the valve core 140 and the pressure reducing chamber 133. Gas can enter through this gap, so that the gas is depressurized and initially mixed here. At this time, the guide groove is not yet connected to the gas outlet channel 131. As the valve core 140 rises, the guide groove gradually connects to the gas outlet channel 131. At this time, the gas can be discharged from the gas outlet channel 131. In the process of the valve core 140 rising, the connection area between the guide groove and the gas outlet channel 131 becomes larger and larger, which means that the gas outlet flow rate can be controlled.

[0033] In some embodiments, a buffer box 134 is provided on the housing 130. The end of the gas outlet channel 131 away from the docking channel 132 is connected to the buffer box 134. The buffer box 134 is used to output gas at the end away from the gas outlet channel 131. It can be understood that the buffer box 134 further buffers the gas, allowing the mixed gas to be depressurized and mixed here, so that the finally discharged gas meets the requirements.

[0034] In some embodiments, the housing 130 is provided with a pressure relief channel 135, which connects to the docking channel 132. A protective cover 136 is snap-fitted onto the housing 130, which is used to block the pressure relief channel 135. The protective cover 136 is connected to the housing 130 via a traction rope. The air intake pipe 200 is made of stainless steel.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A gas mixture release device, characterized in that, include: Valve body (100) is used to connect to a gas cylinder, which is used to load the mixed gas; An air inlet pipe (200) is threaded to the lower end of the valve body (100). The air inlet pipe (200) extends downward and is configured to insert into the inner cavity of the gas cylinder. Several sets of air inlet hole groups (210) are provided on the peripheral wall of the air inlet pipe (200). The several sets of air inlet hole groups (210) are distributed at intervals along the axial direction of the air inlet pipe (200). Each set of air inlet hole groups (210) includes several air inlets (211) evenly distributed around the circumference of the air inlet pipe (200). The air inlets (211) include those opened in the air inlet pipe (200). The intake pipe (200) has an inlet (211a) on the outer wall and an outlet (211c) on the inner wall of the intake pipe (200), and an extension channel (211b) extending from the inlet (211a) to the outlet (211c). The extension channel (211b) can guide the mixed gas from the outlet (211c) into the inner cavity of the intake pipe (200) and then spiral upward along the inner wall of the intake pipe. The mixed gas guided by the extension channels (211b) of the two adjacent sets of intake holes (210) has opposite spiral directions along the inner wall of the intake pipe.

2. The gas mixture release device according to claim 1, characterized in that, The inner circumferential wall of the air intake pipe (200) is provided with a plurality of spiral protrusions (220). The plurality of spiral protrusions (220) are evenly distributed around the circumference of the air intake pipe (200). The spiral protrusions (220) extend from the lower end of the air intake pipe (200) to the upper end of the air intake pipe (200). A spiral guide groove is formed between two adjacent spiral protrusions (220).

3. The gas mixture release device according to claim 1, characterized in that, The lower end of the air intake pipe (200) is threaded with a plug (240), which is used to seal the lower end of the air intake pipe (200).

4. The mixed gas release device according to claim 3, characterized in that, The plug (240) is made of rubber block.

5. The gas mixture release device according to any one of claims 1 to 4, characterized in that, The lower end of the valve body (100) is provided with a threaded connection hole (110), and a rubber sleeve (120) is embedded in the threaded connection hole (110). One end of the rubber sleeve (120) is open, and the other end of the rubber sleeve (120) is provided with an air outlet (121). The threaded connection hole (110) is used to thread the upper end of the air inlet pipe (200). The rubber sleeve (120) is used to seal the gap between the air inlet pipe (200) and the threaded connection hole (110). The air outlet (121) connects the inner cavity of the air inlet pipe (200) with the pressure reducing chamber (133) of the valve body (100).

6. The mixed gas release device according to claim 1, characterized in that, The outer wall of the air intake pipe (200) is provided with a corrosion-resistant layer, which is a corrosion-resistant film or a corrosion-resistant coating.

7. The mixed gas release device according to claim 5, characterized in that, The valve body (100) includes: The outer casing (130) is provided with an air outlet channel (131), a pressure reducing chamber (133) and a docking channel (132). The docking channel (132) is connected to the air outlet channel (131) through the pressure reducing chamber (133), and the docking channel (132) is connected to the air inlet pipe (200) through the threaded connection hole (110). The valve core (140) is vertically slidably disposed in the pressure reducing chamber (133), and the valve core (140) moves up and down in the pressure reducing chamber (133) to control the air flow rate of the air outlet channel (131).

8. The gas mixture release device according to claim 7, characterized in that, A buffer box (134) is provided on the outer shell (130). The end of the air outlet channel (131) away from the docking channel (132) is connected to the buffer box (134). The buffer box (134) is used to output gas at the end away from the air outlet channel (131).

9. The mixed gas release device according to claim 8, characterized in that, The outer shell (130) is provided with a pressure relief channel (135), which is connected to the docking channel (132). A protective cover (136) is snapped onto the outer shell (130). The protective cover (136) is used to block the pressure relief channel (135). The protective cover (136) is connected to the outer shell (130) by a traction rope.

10. The gas mixture release device according to claim 1, characterized in that, The intake pipe (200) is made of stainless steel.

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