Gas mixing device for high-pressure environment operation

Abstract

The utility model provides a mixed gas device for high-pressure environment operation. The mixed gas device comprises a box body, a gas source supply device, a mixing proportion control device and a mixed gas storage device, wherein the mixing proportion control device and the mixed gas storage device are arranged in the box body. Wherein the gas source supply device is used for providing helium, oxygen and nitrogen sources. The mixing proportion control device is connected to the gas source supply device and the mixed gas storage device, and the mixing proportion control device automatically conducts proportion adjustment on helium, oxygen and nitrogen provided by the gas source supply device according to the pressure value of diving operation; and mixing the gases with the adjusted proportions to form mixed gas, and conveying the mixed gas to the mixed gas storage device. And the mixed gas storage device distributes the mixed gas in the mixed gas storage device according to the distribution proportion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas preparation, in particular to a mixed gas device for operation in a high pressure environment. BACKGROUND

[0002] When conducting diving operations or shield machine pressure knife changing operations, the operating personnel must breathe special gas to support life. The conventional method is to inhale binary mixed gas or to inhale air for cost saving when the depth is less than 40 meters (pressure is less than 4 kg). When the pressure exceeds 4 kg, the operating personnel is prone to nitrogen paralysis, which is life-threatening. When the operation is deeper than 40 meters, saturated diving is used. This method uses binary mixed gas, which is composed of 93% helium and 7% oxygen. The problem of this method is that the supporting breathing and diving equipment is heavy, the consumption of helium is extremely large, and the cost is extremely high. After completing the operation, the operating personnel needs to spend 500-700 minutes in the decompression chamber for decompression. After completing the decompression, the operating personnel can operate again after 24 hours. The efficiency is extremely low, and the operation cost is extremely high, which is a pain point of the industry.

[0003] Therefore, how to reduce the operation cost and improve the efficiency of diving operation during the diving operation has become a technical problem to be solved by the technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a mixed gas device for operation in a high pressure environment to solve the technical problem of how to reduce the operation cost and improve the efficiency of diving operation during the diving operation in the prior art.

[0005] The present application provides a mixed gas device for operation in a high pressure environment, comprising: a box body, a gas source gas supply device, a mixed ratio control device arranged in the box body, and a mixed gas storage device;

[0006] The gas source gas supply device is used to provide helium, oxygen, and nitrogen as three kinds of gas sources;

[0007] The mixed ratio control device is connected to the gas source gas supply device and the mixed gas storage device. The mixed ratio control device automatically adjusts the proportions of helium, oxygen, and nitrogen provided by the gas source gas supply device according to the pressure value of the diving operation, mixes the gases after the proportion adjustment to form mixed gas, and delivers the mixed gas to the mixed gas storage device;

[0008] The mixed gas storage device distributes the mixed gas in the mixed gas storage device according to the distribution ratio.

[0009] Optionally, the mixed ratio control device comprises a gas collection cavity, a first gas flow control valve, a first gas shunt valve, a first mixed gas output pipeline, and a pressure sensing assembly.

[0010] The gas collecting cavity is arranged inside the box body; the first gas distribution valve is connected to the gas collecting cavity and the gas supply device, and the first gas distribution valve corresponds to the distribution of each gas of the gas supply device; the first gas distribution valve comprises at least three distribution valve ports and one collecting port;

[0011] The first gas flow control valve is arranged on the first gas distribution valve, and the first gas flow control valve is connected to the pressure sensing assembly, and is used for controlling the first gas flow control valve to adjust the proportion of each gas in the first gas distribution valve according to the pressure of the diving operation sensed by the pressure sensing assembly, and mixing each gas after the proportion is adjusted to be delivered to the gas collecting cavity;

[0012] The first mixed gas output pipeline is connected to the output end of the gas collecting cavity and the mixed gas storage device, and is used for delivering the mixed gas in the gas collecting cavity to the mixed gas storage device.

[0013] Optionally, the mixed proportion control device further comprises a control panel, the control panel is arranged outside the box body, and the control panel is used for controlling the first gas flow control valve to adjust the proportion of each gas in the first gas distribution valve, and is used for displaying the proportion parameter of each gas in the first gas distribution valve.

[0014] Optionally, the mixed gas storage device comprises: a plurality of gas storage tanks, a second gas distribution valve, a second mixed gas output pipeline, a second gas flow control valve, and a distribution assembly.

[0015] The plurality of gas storage tanks are arranged inside the box body and below the gas collecting cavity;

[0016] The first mixed gas output pipeline is connected to the output end of the gas collecting cavity and the plurality of gas storage tanks;

[0017] The second gas distribution valve is arranged at one end of the first mixed gas output pipeline close to the output end of the gas collecting cavity, and is used for distributing the mixed gas of the output end of the gas collecting cavity;

[0018] The second mixed gas output pipeline is connected to the output end of the plurality of gas storage tanks and the distribution assembly;

[0019] The second gas flow control valve is arranged on the second mixed gas output pipeline, and is used for controlling the flow of the mixed gas output by the second mixed gas output pipeline.

[0020] Optionally, the second gas distribution valve distributes the same mixed gas in the gas collection cavity to each of the gas storage tank bodies, so that the mixed gas in each of the gas storage tank bodies is the same as the mixed gas in the gas collection cavity.

[0021] Optionally, the second gas distribution valve distributes each of the mixed gas in the gas collection cavity to the corresponding gas storage tank body, so that each of the gas storage tank bodies has one kind of mixed gas.

[0022] Optionally, the distribution assembly comprises a buffer cavity, a distribution pipeline and a plurality of connection valves.

[0023] The buffer cavity is connected to the output ends of the plurality of gas storage tank bodies through the second mixed gas output pipeline.

[0024] The distribution pipeline is connected to the buffer cavity.

[0025] The plurality of connection valves are connected to the ends of the distribution pipeline for connecting external devices.

[0026] Optionally, the gas source supply device comprises a helium gas supply assembly, an oxygen gas supply assembly and a nitrogen gas supply assembly arranged outside the box.

[0027] The helium gas supply assembly is used to provide helium gas; the oxygen gas supply assembly is used to provide oxygen gas; and the nitrogen gas supply assembly is used to provide nitrogen gas.

[0028] The output ends of the helium gas supply assembly, the oxygen gas supply assembly and the nitrogen gas supply assembly are respectively connected to the mixed ratio control device.

[0029] Optionally, the helium gas supply assembly comprises a plurality of helium gas supply cylinders, a helium gas flow control valve and a helium gas delivery pipeline.

[0030] The plurality of helium gas supply cylinders are connected in parallel to the helium gas delivery pipeline, and the helium gas delivery pipeline is connected to the first gas distribution valve; the helium gas flow control valve is arranged on the helium gas delivery pipeline and used to control the flow of helium gas in the helium gas delivery pipeline.

[0031] Correspondingly, the oxygen gas supply assembly comprises a plurality of oxygen gas supply cylinders, an oxygen gas flow control valve and an oxygen gas delivery pipeline.

[0032] The plurality of oxygen gas supply cylinders are connected in parallel to the oxygen gas delivery pipeline, and the oxygen gas delivery pipeline is connected to the first gas distribution valve; the oxygen gas flow control valve is arranged on the oxygen gas delivery pipeline and used to control the flow of oxygen gas in the oxygen gas delivery pipeline.

[0033] Correspondingly, the nitrogen gas supply assembly comprises a plurality of nitrogen gas supply cylinders, a nitrogen gas flow control valve and a nitrogen gas delivery pipeline;

[0034] The plurality of nitrogen gas supply cylinders are connected in parallel to the nitrogen gas delivery pipeline, and the nitrogen gas delivery pipeline is connected to the first gas shunt valve; the nitrogen gas flow control valve is arranged on the nitrogen gas delivery pipeline and used for controlling the flow of nitrogen gas in the nitrogen gas delivery pipeline.

[0035] Optionally, the gas detection device is arranged at the respective parallel connection of the helium gas delivery pipeline and each of the helium gas supply cylinders, the respective parallel connection of the oxygen gas delivery pipeline and each of the oxygen gas supply cylinders, and the respective parallel connection of the nitrogen gas delivery pipeline and each of the nitrogen gas supply cylinders, and is used for detecting the gas amount of helium in each of the helium gas supply cylinders, the gas amount of oxygen in each of the oxygen gas supply cylinders, and the gas amount of nitrogen in each of the nitrogen gas supply cylinders.

[0036] Compared with the prior art, the present application has the following advantages:

[0037] The present application provides a mixed gas device for large pressure environment operation, comprising a box body, a gas source supply device, a mixing ratio control device arranged in the box body, and a mixed gas storage device. The gas source supply device is used to provide three kinds of gas sources of helium, oxygen and nitrogen. The mixing ratio control device is connected to the gas source supply device and the mixed gas storage device. The mixing ratio control device automatically adjusts the proportions of helium, oxygen and nitrogen provided by the gas source supply device according to the pressure value of diving operation, mixes the adjusted gases to form mixed gas, and delivers the mixed gas to the mixed gas storage device. The mixed gas storage device distributes the mixed gas in the mixed gas storage device according to the distribution ratio.

[0038] It can be understood that the present application provides three kinds of gas sources of helium, oxygen and nitrogen through the gas source supply device to meet the gas demand of diving operation. Then the mixing ratio control device automatically adjusts the proportions of helium, oxygen and nitrogen provided by the gas source supply device according to the pressure value of diving operation, mixes the adjusted gases to form mixed gas. The automatic adjustment of the proportions of helium, oxygen and nitrogen according to the pressure value of diving operation greatly shortens the decompression time, and the proportions of helium, oxygen and nitrogen are adjusted in real time according to the pressure value of diving operation, so as to meet different diving operation environments, thereby improving the operation time and operation efficiency of diving operation. In addition, the gas source supply device and the mixing ratio control device arranged in the box body and the mixed gas storage device provided by the present application have a small number of structures and simple structures, so that the cost can be greatly reduced when applied to diving operation. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of a mixed gas device for high-pressure environment operation provided in the first embodiment of this application.

[0040] Figure label:

[0041] Gas supply device 1, helium supply assembly 2, helium supply cylinder 21, helium flow control valve 22, helium delivery pipeline 23, oxygen supply assembly 3, oxygen supply cylinder 31, oxygen flow control valve 32, oxygen delivery pipeline 33, nitrogen supply assembly 4, nitrogen supply cylinder 41, nitrogen flow control valve 42, nitrogen delivery pipeline 43, mixing ratio control device 5, gas collection chamber 51, first gas flow control valve 52, first mixed gas output pipeline 53, mixed gas storage device 6, gas storage tank 61, second mixed gas output pipeline 62, second gas flow control valve 63, distribution assembly 7, buffer chamber 71, distribution pipeline 72, connecting valve 73. Detailed Implementation

[0042] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] When performing underwater operations or pressurized cutterhead replacement operations on tunnel boring machines, workers must breathe special gases to support their lives. The conventional method is to breathe a binary gas mixture at depths shallower than 40 meters (pressure less than 4 kg) or, to save costs, to breathe air. However, at pressures exceeding 4 kg, workers are prone to nitrogen paralysis, which is life-threatening. For operations deeper than 40 meters, saturation diving is used, employing a binary gas mixture of 93% helium and 7% oxygen. The problem with this method is the heavy weight of the breathing and diving equipment, extremely high helium consumption, and very high costs. After completing the operation, workers must decompress in the decompression chamber for 500-700 minutes. After decompression, they must wait another 24 hours before resuming operations. This process is extremely inefficient and costly, representing a major pain point in the industry.

[0046] Accordingly, this application provides a gas mixing device for high-pressure environments, comprising: a housing, a gas supply device, a mixing ratio control device disposed within the housing, and a gas mixing storage device. The gas supply device provides helium, oxygen, and nitrogen. The mixing ratio control device is connected to the gas supply device and the gas mixing storage device. The mixing ratio control device automatically adjusts the proportions of the helium, oxygen, and nitrogen supplied by the gas supply device according to the pressure value of the diving operation, mixes the adjusted gases to form a gas mixture, and delivers it to the gas mixing storage device. The gas mixing storage device distributes the gas mixture according to the specified ratio.

[0047] This application can be understood as providing helium, oxygen, and nitrogen through a gas supply device to meet the gas requirements of diving operations. A mixing ratio control device automatically adjusts the proportions of the helium, oxygen, and nitrogen supplied by the gas supply device according to the diving pressure, and then mixes the adjusted gases to form a mixed gas. This automatic adjustment of the helium, oxygen, and nitrogen proportions according to the diving pressure significantly shortens decompression time, and the proportions of helium, oxygen, and nitrogen are adjusted in real time according to the diving pressure, thus meeting the needs of different diving environments and improving the operation time and efficiency of diving operations. Furthermore, the gas supply device, the mixing ratio control device housed in the enclosure, and the mixed gas storage device provided in this application have a small number of components and a relatively simple structure, thereby significantly reducing costs when applied to diving operations.

[0048] The mixed gas apparatus for high-pressure environment operation provided in this application will now be described in detail with reference to the accompanying drawings. Figure 1 This is a schematic diagram of a mixed gas device for high-pressure environment operation provided in an embodiment of this application.

[0049] like Figure 1As shown, this application provides a mixed gas device for high-pressure environment operations, including: a housing, a gas supply device 1, a mixing ratio control device 5 disposed in the housing, and a mixed gas storage device 6. The gas supply device 1 provides helium, oxygen, and nitrogen. The mixing ratio control device 5 is connected to the gas supply device 1 and the mixed gas storage device 6. The mixing ratio control device 5 automatically adjusts the proportions of the helium, oxygen, and nitrogen supplied by the gas supply device 1 according to the pressure value of the diving operation, mixes the adjusted gases to form a mixed gas, and delivers it to the mixed gas storage device 6. The mixed gas storage device 6 distributes the mixed gas in the storage device according to the specified ratio.

[0050] Specifically, in this embodiment, the gas supply device 1 includes a helium supply assembly 2, an oxygen supply assembly 3, and a nitrogen supply assembly 4, all located outside the housing. The helium supply assembly 2 provides helium. The oxygen supply assembly 3 provides oxygen. The nitrogen supply assembly 4 provides nitrogen. The output terminals of each of the helium supply assembly 2, oxygen supply assembly 3, and nitrogen supply assembly 4 are connected to a mixing ratio control device 5. Further, in one example, the helium supply assembly 2 includes multiple helium supply cylinders 21, a helium flow control valve 22, and a helium delivery pipeline 23. The multiple helium supply cylinders 21 are connected in parallel to the helium delivery pipeline 23, allowing helium from the multiple helium supply cylinders 21 to be delivered through the helium delivery pipeline 23. The helium delivery pipeline 23 is connected to the first gas diversion valve (hereinafter referred to as the gas diversion valve), specifically, the helium delivery pipeline 23 is connected to the helium valve port of the first gas diversion valve, so as to deliver helium from multiple helium supply cylinders 21 to the gas collection chamber 51 (hereinafter referred to as the gas diversion valve) through the helium delivery pipeline 23 and the helium valve port of the first gas diversion valve. A helium flow control valve 22 is provided on the helium delivery pipeline 23 to control the flow rate of helium in the helium delivery pipeline 23. In one example, the helium supply assembly 2 also includes a gas detection device, which is provided at the parallel connection point between the helium delivery pipeline 23 and each helium supply cylinder 21, to detect the amount of helium in each helium supply cylinder 21, so as to replenish the helium in the helium supply cylinder 21 in a timely manner when the helium in the helium supply cylinder 21 is insufficient.

[0051] Correspondingly, the oxygen supply assembly 3 includes multiple oxygen supply cylinders 31, an oxygen flow control valve 32, and an oxygen delivery pipeline 33. The multiple oxygen supply cylinders 31 are connected in parallel to the oxygen delivery pipeline 33, allowing oxygen from the cylinders to be delivered through this pipeline. The oxygen delivery pipeline 33 is connected to a first gas diversion valve, specifically to the oxygen valve port, to deliver oxygen from the cylinders 31 to the gas collection chamber 51 via the pipeline and the valve port. The oxygen flow control valve 32 is located on the pipeline 33 and controls the flow rate of oxygen within it. In one example, the oxygen supply assembly 3 also includes a gas detection device, which is installed at the parallel connection between the oxygen delivery pipeline 33 and each oxygen supply cylinder 31. The gas detection device is used to detect the amount of oxygen in each oxygen supply cylinder 31 so as to replenish the oxygen in the oxygen supply cylinder 31 in a timely manner when the oxygen in the oxygen supply cylinder 31 is insufficient.

[0052] Correspondingly, the nitrogen supply assembly 4 includes multiple nitrogen supply cylinders 41, a nitrogen flow control valve 42, and a nitrogen delivery pipeline 43. The multiple nitrogen supply cylinders 41 are connected in parallel to the nitrogen delivery pipeline 43, allowing nitrogen from the cylinders to be delivered through the pipeline. The nitrogen delivery pipeline 43 is connected to a first gas diversion valve, specifically to the nitrogen valve port, to deliver nitrogen from the cylinders 41 to the gas collection chamber 51 via the pipeline and the valve port. The nitrogen flow control valve 42 is located on the nitrogen delivery pipeline 43 and controls the flow rate of nitrogen within it. In one example, the nitrogen supply assembly 4 also includes a gas detection device, which is installed at the parallel connection point between the nitrogen delivery pipeline 43 and each nitrogen supply cylinder 41. The gas detection device is used to detect the amount of nitrogen in each nitrogen supply cylinder 41 so as to replenish the amount of nitrogen in the nitrogen supply cylinder 41 in a timely manner when the nitrogen in the nitrogen supply cylinder 41 is insufficient.

[0053] The mixing ratio control device 5 is connected to the gas supply device 1 and the mixed gas storage device 6. The mixing ratio control device 5 automatically adjusts the ratio of helium, oxygen and nitrogen supplied by the gas supply device 1 according to the pressure value of the diving operation, and mixes the gases after the adjustment ratio to form a mixed gas and delivers it to the mixed gas storage device 6.

[0054] Specifically, in this embodiment, the mixing ratio control device 5 includes: a gas collecting chamber 51, a first gas flow control valve 52, a first gas diversion valve, a first mixed gas output pipeline 53, and a pressure sensing component. The gas collecting chamber 51 is located inside the housing. The first gas diversion valve is connected to the gas collecting chamber 51 and the gas supply device 1, and is connected to the nitrogen delivery pipeline 43, helium delivery pipeline 23, and oxygen delivery pipeline 33 of the gas supply device 1. The first gas diversion valve diverts the various gases from the gas supply device 1 accordingly. The first gas diversion valve includes at least three diversion valve ports and one collection port; that is, the first gas diversion valve includes at least a helium valve port, a nitrogen valve port, and an oxygen valve port. The gases passing through each of the helium, nitrogen, and oxygen valve ports are finally collected at the collection port. Specifically, the helium delivery pipeline 23 is connected to the helium valve port of the first gas diversion valve to deliver helium from multiple helium supply cylinders 21 to the gas collection chamber 51 via the helium delivery pipeline 23, the helium valve port of the first gas diversion valve, and the collection port. The nitrogen delivery pipeline 43 is connected to the nitrogen valve port of the first gas diversion valve to deliver nitrogen from multiple nitrogen supply cylinders 41 to the gas collection chamber 51 via the nitrogen delivery pipeline 43, the nitrogen valve port of the first gas diversion valve, and the collection port. The oxygen delivery pipeline 33 is connected to the oxygen valve port of the first gas diversion valve to deliver oxygen from multiple oxygen supply cylinders 31 to the gas collection chamber 51 via the oxygen delivery pipeline 33, the oxygen valve port of the first gas diversion valve, and the collection port.

[0055] A first gas flow control valve 52 is installed on a first gas diversion valve. The first gas flow control valve 52 is connected to the pressure sensing component and is used to adjust the proportions of various gases in the first gas diversion valve based on the pressure sensed by the pressure sensing component. The adjusted gases are then mixed and delivered to the gas collection chamber 51. The diving operation pressure sensed by the pressure sensing component and the adjustment of the proportions of various gases in the first gas diversion valve by the first gas flow control valve 52 can be obtained through extensive experimental data. That is, different diving operation pressures correspond to different proportions of helium, oxygen, and nitrogen, thus allowing for the mixing of gases with different proportions. In one example, the pressure sensing component is located outside the housing, allowing direct sensing of the diving operation pressure. Alternatively, the pressure sensing component can be connected to a pressure sensing device in the diving operation environment to indirectly obtain the diving operation pressure. In one example, the first gas flow control valve 52 is installed at the helium, nitrogen, and oxygen ports of the first gas diversion valve to precisely control the mixing proportions of helium, nitrogen, and oxygen at the helium, nitrogen, and oxygen ports.

[0056] In this embodiment, the mixing ratio control device 5 also includes a control panel, which is located outside the housing. The control panel is used to control the first gas flow control valve 52 to adjust the ratio of various gases in the first gas diversion valve, and to display the ratio parameters of various gases in the first gas diversion valve, so that the operator can clearly know the ratio of various gases in the mixed gas. At the same time, the first gas flow control valve 52 can be manually controlled through the control panel to adjust the ratio of various gases in the first gas diversion valve. In the event of a malfunction in the gas mixing device (briefly described), it will switch to manual control mode to ensure accurate gas composition and pressure, achieve continuous gas supply, and ensure gas safety.

[0057] The first mixed gas output pipeline 53 is connected to the output end of the gas collection chamber 51 and the mixed gas storage device 6, and is used to transport the mixed gas in the gas collection chamber 51 to the mixed gas storage device 6.

[0058] In this embodiment, the mixed gas storage device 6 includes: multiple gas storage tanks 61, a second gas diversion valve, a second mixed gas output pipeline 62, a second gas flow control valve 63, and a distribution assembly 7. The multiple gas storage tanks 61 are disposed inside a housing and located below the gas collection chamber 51. The first mixed gas output pipeline 53 connects the output end of the gas collection chamber 51 to the multiple gas storage tanks 61. The second gas diversion valve is located at the end of the first mixed gas output pipeline 53 near the output end of the gas collection chamber 51, and is used to divert the mixed gas at the output end of the gas collection chamber 51. In one example, the second gas diversion valve diverts the same mixed gas in the gas collection chamber 51 to each of the gas storage tanks 61, so that the mixed gas in each of the gas storage tanks 61 is the same as the mixed gas in the gas collection chamber 51. This gas diversion method can meet the gas consumption requirements in the same diving operation environment. In another example, the second gas diversion valve diverts each type of mixed gas in the gas collection chamber 51 to a corresponding gas storage tank 61, so that each gas storage tank 61 contains one type of mixed gas. This gas diversion method can meet the gas consumption requirements in different diving operation environments.

[0059] The second mixed gas output line 62 is connected to the output ends of multiple gas storage tanks 61 and the distribution assembly 7 to deliver the mixed gas from each gas storage tank 61 to the distribution assembly 7. In one example, the distribution assembly 7 includes a buffer chamber 71, a distribution line 72, and multiple connecting valves 73. The buffer chamber 71 is connected to the output ends of the multiple gas storage tanks 61 via the second mixed gas output line 62, and can be used to buffer and store the mixed gas. The distribution line 72 is connected to the buffer chamber 71, and the multiple connecting valves 73 are connected to the end of the distribution line 72 for connecting external devices. External devices may include, for example, breathing masks.

[0060] The second gas flow control valve 63 is installed on the second mixed gas output pipeline 62 and is used to control the flow rate of the mixed gas output by the second mixed gas output pipeline 62.

[0061] This application provides a gas mixing device for high-pressure environments, comprising: a housing, a gas supply device 1, a mixing ratio control device 5 disposed within the housing, and a gas mixing storage device 6. The gas supply device 1 provides helium, oxygen, and nitrogen. The mixing ratio control device 5 is connected to the gas supply device 1 and the gas mixing storage device 6. The mixing ratio control device 5 automatically adjusts the proportions of the helium, oxygen, and nitrogen supplied by the gas supply device 1 according to the pressure value of the diving operation, mixes the adjusted gases to form a gas mixture, and delivers it to the gas mixing storage device 6. The gas mixing storage device 6 distributes the gas mixture according to the specified ratio.

[0062] This application can be understood as follows: It provides helium, oxygen, and nitrogen through a gas supply device 1 to meet the gas requirements of diving operations. A mixing ratio control device 5 automatically adjusts the proportions of the helium, oxygen, and nitrogen supplied by the gas supply device 1 according to the diving operation pressure, and then mixes the adjusted gases to form a mixed gas. The automatic adjustment of the helium, oxygen, and nitrogen proportions according to the diving operation pressure significantly shortens decompression time, and the proportions of helium, oxygen, and nitrogen are adjusted in real time according to the diving operation pressure, thus meeting the needs of different diving operation environments and improving the operation time and efficiency of diving operations. Furthermore, the gas supply device 1, the mixing ratio control device 5 housed in the enclosure, and the mixed gas storage device 6 provided in this application have a small number of components and a relatively simple structure, thus significantly reducing costs when applied to diving operations.

[0063] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0064] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0065] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A mixed gas device for use in a high pressure environment, characterized by, The utility model relates to a kind of mixed gas supply device, including: Box, gas supply device and the mixing proportion control device of being arranged in the box and mixed gas storage device; The gas supply device is used to provide helium, oxygen, nitrogen three kinds of gas source; The mixing proportion control device is connected to the gas supply device and the mixed gas storage device, the mixing proportion control device is adjusted according to the pressure value of diving operation with helium, oxygen, nitrogen provided by the gas supply device in proportion, and each gas after adjusting proportion is mixed to form mixed gas and is transported to the mixed gas storage device; The mixed gas storage device distributes the mixed gas in the mixed gas storage device according to distribution proportion.

2. The mixed gas device for work in a large pressure environment according to claim 1, characterized by, The mixing proportion control device includes: gas collection cavity, first gas flow control valve, first gas shunt valve, first mixed gas output pipeline and pressure sensing component; The gas collection cavity is arranged in the inside of the box;The first gas shunt valve is connected to the gas collection cavity and the gas supply device, and the first gas shunt valve shunts each gas of the gas supply device correspondingly;The first gas shunt valve includes at least three shunt valve ports and a collection port; The first gas flow control valve is arranged on the first gas shunt valve, and the first gas flow control valve is connected with the pressure sensing component, for controlling the first gas flow control valve to adjust the proportion of various gases in the first gas shunt valve according to the pressure sensed by the pressure sensing component, and each gas after adjusting proportion is mixed to be transported to the gas collection cavity; The first mixed gas output pipeline is connected to the output end of the gas collection cavity and the mixed gas storage device, for transporting the mixed gas in the gas collection cavity to the mixed gas storage device.

3. The mixed gas device for use in a high pressure environment according to claim 2, wherein The mixing proportion control device further includes a control panel, which is arranged outside the box, and the control panel is used to control the first gas flow control valve to adjust the proportion of various gases in the first gas shunt valve, and to display the proportion parameters of various gases in the first gas shunt valve.

4. The mixed gas device for use in a high pressure environment according to claim 2, wherein The mixed gas storage device includes: a plurality of gas storage tanks, a second gas shunt valve, a second mixed gas output pipeline, a second gas flow control valve, and a distribution component; The plurality of gas storage tanks are arranged inside the box and below the gas collection cavity; The first mixed gas output pipeline is connected to the output end of the gas collection cavity and the plurality of gas storage tanks; The second gas shunt valve is arranged at one end of the first mixed gas output pipeline close to the output end of the gas collection cavity, and is used to shunt the mixed gas of the output end of the gas collection cavity; The second mixed gas output pipeline is connected to the output end of the plurality of gas storage tanks and the distribution component; The second gas flow control valve is arranged on the second mixed gas output pipeline, for controlling the flow of the mixed gas output by the second mixed gas output pipeline.

5. The mixed gas device for use in a high pressure environment according to claim 4, wherein The second gas distribution valve distributes the same mixed gas in the gas collection cavity to each of the gas storage tank bodies, so that the mixed gas in each of the gas storage tank bodies is the same as the mixed gas in the gas collection cavity.

6. The mixed gas device for use in a high pressure environment according to claim 4, wherein The second gas distribution valve distributes each of the mixed gas in the gas collection cavity to the corresponding gas storage tank body, so that each of the gas storage tank bodies has one kind of mixed gas.

7. The mixed gas device for use in a high pressure environment according to claim 4, wherein The distribution assembly comprises a buffer cavity, a distribution pipeline and a plurality of connection valves; The buffer cavity is connected to the output ends of the plurality of gas storage tank bodies through the second mixed gas output pipeline; The distribution pipeline is connected to the buffer cavity; The plurality of connection valves are connected to the ends of the distribution pipeline for connecting external devices.

8. The mixed gas device for use in a high pressure environment according to claim 2, wherein The gas source gas supply device comprises a helium gas supply assembly, an oxygen gas supply assembly and a nitrogen gas supply assembly arranged outside the box body; The helium gas supply assembly is used for providing helium gas; the oxygen gas supply assembly is used for providing oxygen gas; and the nitrogen gas supply assembly is used for providing nitrogen gas; The output ends of the helium gas supply assembly, the oxygen gas supply assembly and the nitrogen gas supply assembly are respectively connected to the mixed ratio control device.

9. The mixed gas device for use in a high pressure environment according to claim 8, wherein The helium gas supply assembly comprises a plurality of helium gas supply cylinders, a helium gas flow control valve and a helium gas delivery pipeline; The plurality of helium gas supply cylinders are connected in parallel to the helium gas delivery pipeline, the helium gas delivery pipeline is connected to the first gas distribution valve, and the helium gas flow control valve is arranged on the helium gas delivery pipeline and used for controlling the flow of helium gas in the helium gas delivery pipeline; Correspondingly, the oxygen gas supply assembly comprises a plurality of oxygen gas supply cylinders, an oxygen gas flow control valve and an oxygen gas delivery pipeline; The plurality of oxygen gas supply cylinders are connected in parallel to the oxygen gas delivery pipeline, the oxygen gas delivery pipeline is connected to the first gas distribution valve, and the oxygen gas flow control valve is arranged on the oxygen gas delivery pipeline and used for controlling the flow of oxygen gas in the oxygen gas delivery pipeline; Correspondingly, the nitrogen gas supply assembly comprises a plurality of nitrogen gas supply cylinders, a nitrogen gas flow control valve and a nitrogen gas delivery pipeline; The plurality of nitrogen gas supply cylinders are connected in parallel to the nitrogen gas delivery pipeline, the nitrogen gas delivery pipeline is connected to the first gas distribution valve, and the nitrogen gas flow control valve is arranged on the nitrogen gas delivery pipeline and used for controlling the flow of nitrogen gas in the nitrogen gas delivery pipeline.

10. The mixed gas device for use in a high pressure environment according to claim 9, wherein A gas detection device is further arranged at each of the parallel connection positions of the helium gas delivery pipeline and each of the helium gas supply cylinders, the parallel connection positions of the oxygen gas delivery pipeline and each of the oxygen gas supply cylinders and the parallel connection positions of the nitrogen gas delivery pipeline and each of the nitrogen gas supply cylinders, and is used for detecting the gas amount of helium gas in each of the helium gas supply cylinders, the gas amount of oxygen gas in each of the oxygen gas supply cylinders and the gas amount of nitrogen gas in each of the nitrogen gas supply cylinders.

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