A gas cylinder thermal insulation and cushion and control system and method thereof

Abstract

The application relates to a gas cylinder protection technical field, in particular to a gas cylinder heat insulation and buffer pad and a control system and method thereof. The gas cylinder heat insulation and buffer pad comprises a gas pad, a control valve, an air inlet pipe, an air outlet pipe and a three-way valve. A one-way air path is arranged in the gas pad. The air inlet pipe is connected with the inlet of the control valve, the first outlet of the control valve is connected with the air inlet end of the gas pad, and the second outlet of the control valve is connected with the first inlet of the three-way valve through the air outlet pipe. The air outlet end of the gas pad is connected with the second inlet of the three-way valve. In the use state, the gas pad is wrapped around the outer periphery of the gas cylinder, the air outlet valve of the gas cylinder is connected with the inlet of the control valve through the air inlet pipe, the second outlet of the three-way valve connected with the control valve is in the open state, and the opening degree of the first outlet of the control valve connected with the gas pad is adjusted according to the gas pressure in the cylinder and the ambient temperature. The gas cylinder heat insulation and buffer pad can realize heat insulation and protection of the gas pad by supporting the gas pad through the outflow of the gas in the cylinder and by flowing to the breathing mask through the gas pad. The opening degree of the flow channel of the gas pad is controlled through the control valve, so that the gas flow in the gas pad is controlled, the protection adjustment under different thermal environments and different gas cylinder pressures is realized, and the gas cylinder heat insulation is more flexible.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gas cylinder protection, in particular to a gas cylinder heat insulation and cushion and a control system and method thereof. BACKGROUND

[0002] As a pressure container, a gas cylinder is commonly used in a self-contained positive pressure respirator, is often used in various accident scenes as a basic component of individual protective equipment, and provides air or oxygen to protect personnel safety. However, the gas cylinder itself has certain safety risks, and in typical accident scenes such as fire, the objective high temperature environment and external impact further increase the risk level of the gas cylinder. According to the State Council department regulations “Special Equipment Safety Supervision Regulations (2009 Amendment)”, gas cylinders are included in the national special equipment safety supervision regulations system for strict management; the administrative document “TSG23-2021 Gas Cylinder Safety Technical Regulations” and the national standard “GB / T 34525-2017 Safety Regulations for Gas Cylinder Handling, Loading, Storage and Use” both clearly require that the gas cylinder should not be close to the heat source, prevent accidental heating, and should not knock or collide with the gas cylinder. Therefore, heat insulation and impact protection are necessary technologies to ensure the safety of the gas cylinder.

[0003] In the field of individual protective equipment, due to the existence of multiple risk elements in the use scene, while solving the personal protection demand, the technical features that need to be strengthened include low carrying load, small occupied volume, low power demand, and high reuse degree, so as to improve the usability of the equipment and ensure the behavior flexibility of the user.

[0004] At present, various gas cylinder protection technical solutions have been proposed, for example:

[0005] (1) A heat insulation cavity is arranged on the gas cylinder, such as CN202320041641.6 and CN202222378059.7, etc. This scheme modifies the inherent structure of the gas cylinder, which must be operated by the production party, and is invalid after damage;

[0006] (2) A heat insulation coating is coated on the gas cylinder, such as CN202410341828.7, CN202010077362.6 and CN201911067986.3, etc. This scheme also needs to be coated during gas cylinder production, and must be operated by the production party, and is invalid after damage, and the heat insulation effect depends on the quality of the coating, and the cost performance is low;

[0007] (3) A gas bag or other protective component is arranged outside the gas cylinder to reduce the risk of collision and damage, such as CN202411134705.2, etc. and similar designs use an electric air pump for inflation collision protection, which significantly increases the technical complexity and overall quality; in this structure, the gas bag is closed, and due to the expansion of the gas in the high temperature environment, the inflation and deflation of the gas bag need to be considered, which is inconvenient to use. SUMMARY

[0008] In order to overcome the defects of the prior art that there is no low-cost, high-efficiency and convenient gas cylinder protection technology, the application provides a gas cylinder heat insulation and cushion, which is suitable for any gas cylinder, uses the output of the gas in the cylinder for protection and heat insulation, has good effect and low cost, and realizes the improvement of flexibility, portability and reusability of the gas cylinder protection structure.

[0009] The gas cylinder heat insulation and cushion provided by the application comprises a gas cushion, a control valve, an air inlet pipe, an air outlet pipe and a three-way valve.

[0010] The gas cushion is internally provided with a one-way air path; the inlet of the control valve is communicated with the air inlet pipe, the first outlet thereof is communicated with the air inlet end of the gas cushion, and the second outlet thereof is communicated with the first inlet of the three-way valve through the air outlet pipe; and the air outlet end of the gas cushion is communicated with the second inlet of the three-way valve.

[0011] In the use state, the gas cushion is wrapped around the outer periphery of the gas cylinder, and the gas outlet valve of the gas cylinder is communicated with the inlet of the control valve through the air inlet pipe; the second outlet of the three-way valve communicated with the control valve is in a normally open state, and the opening degree of the first outlet of the control valve communicated with the gas cushion is adjusted according to the gas pressure in the cylinder and the ambient temperature.

[0012] Preferably, the gas cushion is internally provided with a plurality of parallel one-way air paths, the air inlet end of the gas cushion is communicated with the inlets of the air paths, and the air outlet end of the gas cushion is communicated with the outlets of the air paths.

[0013] Preferably, the gas cushion is formed by bending and laying a plurality of parallel air pipes in a serpentine shape and then bonding them; and the air pipes have rough surfaces.

[0014] Preferably, a pressure reducing valve is arranged on the air inlet pipe, and a heat insulation coating is coated on the gas cushion; and the gas cushion has a laying structure or a sheath structure.

[0015] Preferably, the application further comprises an air outlet pipe and a breathing mask; the air inlet of the breathing mask is communicated with the outlet of the three-way valve; the air outlet pipe is communicated with the air outlet valve on the breathing mask; and the air outlet pipe is used for binding the gas cushion.

[0016] The application provides a gas cylinder control system, which comprises a gas cylinder, a gas cylinder heat insulation and cushion, a pressure sensor and a processor; the gas cushion is wrapped around the outer periphery of the gas cylinder, the gas outlet valve of the gas cylinder is communicated with the inlet of the control valve through the air inlet pipe; the pressure sensor is used for detecting the gas pressure in the cylinder, i.e. the gas pressure in the gas cylinder; the processor is signal-connected with the pressure sensor and the control valve, and the processor is also used for receiving ambient temperature information.

[0017] The processor calculates the opening area S of the first outlet of the control valve in combination with the gas pressure in the cylinder and the ambient temperature; the second outlet of the control valve is in a normally open state, and the control valve adjusts the opening area S of the first outlet according to the instruction issued by the processor;

[0018] S = π [d'a1 / 2] 2

[0019]

[0020] Wherein, d'a1 represents the open diameter; k is the set adjustment factor, π is the circular constant, Int represents the integer; V 换 is the ventilation volume of the air cushion in unit time; da2 is the diameter of the second outlet of the control valve, V a2 is the air output of the second outlet in unit time.

[0021] Preferably, it also includes a temperature sensor for monitoring the temperature of the gas cylinder, and the processor communicates with the temperature sensor and calculates the ventilation volume V 换 of the air cushion in unit time according to the following formula:

[0022]

[0023] Wherein, C 气 is the heat capacity of the bottled gas, ρ 气 is the density of the bottled gas under standard conditions; Q 导 is the heat flow per unit time conducted by the environment to the gas cylinder through the air cushion; T 环 is the ambient temperature; T 瓶 is the temperature of the gas cylinder, d 瓶 is the diameter of the gas cylinder, h 瓶 is the height of the gas cylinder; λ 管 is the thermal conductivity of the air cushion; m 管 is the number of air paths in the air cushion; n 管 is the thickness of the air path wall in the air cushion, d 管 is the diameter of the air tube in the air cushion, λ 管 is the thermal conductivity.

[0024] The control method of the gas cylinder provided in the application first sets the lower limit of the pressure in the bottle, the lower limit of the temperature and the upper limit of the temperature, and the upper limit of the temperature is greater than the lower limit of the temperature; and the gas pressure in the bottle and the ambient temperature are monitored in real time;

[0025] When the gas pressure in the bottle is less than the lower limit of the pressure, or the ambient temperature is less than the lower limit of the temperature; the first outlet of the control valve is closed, and the gas in the gas cylinder is sent into the breathing mask through the second outlet of the control valve;

[0026] When the gas pressure in the bottle is greater than or equal to the lower limit of the pressure, and the ambient temperature is greater than the upper limit of the temperature, the first outlet of the control valve is completely opened;

[0027] When the gas pressure in the bottle is greater than or equal to the lower limit of the pressure, and the ambient temperature is greater than or equal to the lower limit of the temperature and less than or equal to the upper limit of the temperature, the opening area S of the first outlet is calculated, and the control valve is adjusted to execute the opening area S.

[0028] Preferably, the lower limit of the temperature is in the interval [30℃, 38℃], and the upper limit of the temperature is in the interval [50℃, 60℃].

[0029] Preferably, the lower limit of the temperature is set to 31℃, the upper limit of the temperature is set to 59℃, and the lower limit of the pressure is set to 2M.

[0030] The application has the following advantages:

[0031] (1) The gas cylinder heat insulation and cushion provided in the application sets two airflow channels to the breathing mask, one is the gas outlet pipe, which can realize short-path gas supply from the gas cylinder to the breathing mask, ensuring low resistance inhalation for the user; the other is through the air cushion to the breathing mask, which is convenient for supporting the air cushion through the outflow of the gas in the bottle, realizing the heat insulation and protection of the air cushion. The flow channel through the air cushion is controlled by the control valve, so as to control the air flow in the air cushion, realize the protection adjustment under different thermal environments and different gas cylinder gas pressures, and make the gas cylinder heat insulation more flexible.

[0032] (2) In the application, multiple air paths are arranged in the air cushion, which is conducive to further reducing the breathing resistance; the air cushion is formed by bonding the air pipes, which improves the tension of the air cushion. The air pipe adopts rough surface, which is conducive to increasing the air pipe wall friction and improving the structural stability of the air cushion. The air cushion is coated with a heat insulation coating, which further improves the heat insulation performance.

[0033] (3) Under the driving of the self-gas storage pressure of the gas cylinder, the air cushion provides gas for the user while providing heat insulation and impact protection for the gas cylinder; the application sets the gas outlet pipe to provide an additional air path for the user, thereby reducing the inhalation resistance and improving the gas use comfort. The application has the technical characteristics of light weight, modularity, easy manufacturing, strong reuse, etc., and is suitable for individual protective equipment such as self-contained positive pressure respirators and various gas cylinder-based gas supply equipment, especially for scenes with high temperature and collision risk, such as fire fighting, mining, emergency rescue and escape, etc.

[0034] (4) In the application, the exhalation pipe is arranged to bind the air cushion and improve the structural stability; the exhalation pipe can also further carry away the heat around the periphery of the air cushion through the airflow, improving the heat insulation effect.

[0035] (5) In the application, the gas flow in the air cushion is controlled by adjusting the gas flow of the first outlet of the control valve combined with the environmental temperature and the gas pressure in the bottle, which ensures the flexibility and reliability of the gas cylinder, and balances the heat insulation performance and safety performance.

[0036] (6) The gas cylinder control method provided in this application combines gas cylinder pressure monitoring and environmental monitoring, and sets a limit for the opening of the air cushion flow channel. When the gas cylinder is under low pressure, the air cushion flow channel is prevented from opening, ensuring the user's normal breathing and avoiding the increase of the user's breathing resistance due to the air cushion setting. When the ambient temperature is low, the air cushion flow channel is prevented from opening, avoiding redundant protective actions. In high temperature environments, the air cushion flow channel is fully opened, fully taking into account the gas cylinder's gas expansion and cooling requirements. Under the self-driven air pressure, the airflow through the air cushion achieves sufficient heat dissipation and protection. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the gas cylinder structure;

[0038] Figure 2 Here is a flowchart of the gas cylinder control method;

[0039] Diagram: 1. Air cushion; 2. Control valve; 3. Inlet pipe; 4. Outlet pipe; 5. Three-way valve; 6. Gas cylinder; 7. Exhalation pipe; 8. Breathing mask; 9. Pressure reducing valve; Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] like Figure 1 As shown, the gas cylinder insulation and cushioning pad proposed in this application is used to cover the outer periphery of the gas cylinder, providing heat insulation and protection for the gas cylinder.

[0042] The gas cylinder insulation and cushioning pad includes: gas cushion 1, control valve 2, inlet pipe 3, outlet pipe 4, and three-way valve 5. Gas cushion 1 covers the outer periphery of the gas cylinder 6 to prevent heat exchange between the environment and the gas inside the cylinder.

[0043] The air cushion 1 has a one-way air passage; the inlet of the control valve 2 is connected to the air inlet pipe 3, its first outlet a1 is connected to the air inlet end of the air cushion 1, and its second outlet a2 is connected to the first inlet of the three-way valve 5 through the air outlet pipe 4; the outlet of the three-way valve 5 is used to connect to the air inlet of the breathing mask 8. The air outlet end of the air cushion 1 is connected to the second inlet of the three-way valve 5. The opening ratio of the first outlet and the second outlet of the control valve 2 is adjustable.

[0044] The gas cylinder outlet valve is connected to the inlet of control valve 2 via inlet pipe 3.

[0045] In this way, the gas inside the bottle can flow to the breathing mask 8 through the air cushion 1, or through the air outlet tube 4.

[0046] When the bottle gas flows to the breathing mask 8 through the air cushion 1, the air cushion is in the state of being inflated, can efficiently isolate the heat exchange between the environment and the gas cylinder, and reduce the heat absorption and temperature rise of the bottle gas. The gas flow in the air cushion 1 can take away the heat around the gas cylinder, further improving the heat insulation effect.

[0047] The gas outlet pipe 4 is provided to cooperate with the air cushion 1 to ensure the gas pressure of the breathing mask 8, and avoid increasing the inhalation resistance in the gas path in the air cushion 1. In the embodiment, the gas inlet pipe 3 is provided with a pressure reducing valve 9 to ensure the stability of the gas pressure.

[0048] In specific implementation, the air cushion 1 is internally provided with a plurality of parallel one-way gas paths, the gas inlet end of the air cushion 1 is communicated with the inlets of the gas paths, and the gas outlet end of the air cushion 1 is communicated with the outlets of the gas paths. In this way, the cross-sectional area of the flow channel in the air cushion 1 can be increased, and the gas flow resistance in the air cushion 1 is further reduced, thereby reducing the inhalation resistance of the breathing mask 8.

[0049] The air cushion 1 is formed by bending and laying the gas pipes in a serpentine shape and bonding them. The gas pipes are bent by 180 degrees at the bending positions to ensure smooth gas flow. The gas pipes can have rough surfaces to increase the friction. Specifically, the air cushion 1 is formed by bending a plurality of parallel gas pipes to form the air cushion 1 with a plurality of parallel one-way gas paths. The outer periphery of the gas pipes is coated with a heat insulation layer to further improve the heat insulation effect of the air cushion 1.

[0050] Specifically, the gas pipes can be made of flexible materials with heat-resistant and heat-insulating properties, and the gas pipes are wrapped around the gas cylinder in a mesh and multi-layer structure by weaving. The gas pipes are supported by the pressure difference between the inner and outer gas environments, and isolate the heat transfer and impact from the outside to the inside, thereby providing further heat insulation and impact protection for the gas cylinder 6.

[0051] In the embodiment, the air cushion 1 can be made in a flat and expanded structure, as shown in Figure 1 When in use, the air cushion 1 is wrapped around the outer periphery of the gas cylinder 6, the gas inlet of the air cushion 1 is located at the inner ring, and the gas outlet of the air cushion 1 is located at the outer ring. The air cushion 1 can also be made in a sheath structure, which is more convenient to use, but cannot match gas cylinders of different diameters.

[0052] In the embodiment, the exhalation pipe 7 can be provided to communicate with the exhalation valve on the breathing mask 8, and the exhalation pipe 7 can be used to bind the air cushion 1 to ensure the relative position stability of the air cushion 1 and the gas cylinder 6.

[0053] The control valve 2 is an electromagnetic valve to control the opening degree of the second outlet a2 and the first outlet a1.

[0054] In this embodiment, the second outlet a2 of the communication tee valve 5 is in the open state, and the opening degree of the first outlet a1 of the control valve 2 is adjusted according to the bottle gas pressure P and the ambient temperature T. During the gas cylinder gas supply process, by monitoring the ambient temperature outside the gas cylinder, and as the temperature rises, the gas output of the air cushion 1 is increased, which can take away more heat and provide more efficient thermal protection for the gas cylinder; at the same time, the gas supply amount can be further increased, the inhalation resistance of the gas user can be reduced, and the comfort can be improved.

[0055] The lower limit of the pressure represents the acceptable minimum value, which is 2 MPa by default; it can be customized as needed. The temperature setting corresponds to the temperature of the environment, and the lower limit of the temperature and the upper limit of the temperature represent the acceptable maximum temperature range, respectively. The lower limit of the temperature can be set to 31, and the upper limit of the temperature can be set to 59; both parameters can be customized as needed.

[0056] Referring to Figure 2 In this embodiment, the control method of the gas cylinder is:

[0057] The bottle gas pressure P and the ambient temperature T are monitored in real time, and the opening degree of the first outlet a1 is controlled according to the comparison results of the bottle gas pressure P and the set lower limit of the pressure Pmin, and the comparison results of the ambient temperature T and the set lower limit of the temperature Tmin and the upper limit of the temperature Tmax.

[0058] When P

[0059] When P≥Pmin and T>Tmax, the first outlet a1 of the control valve 2 is fully opened, the gas flow in the air cushion 1 is increased, and the heat insulation effect is improved;

[0060] When P≥Pmin and Tmin≤T≤Tmax, the opening area S of the first outlet a1 is calculated, and the control valve 2 is adjusted to execute the opening area S:

[0061] S=π[d'a1 / 2] 2

[0062] Wherein, d'a1 represents the open diameter.

[0063] In the fire scene, there is a temperature gradient between the external environment and the gas cylinder on both sides of the air cushion 1, and the gradient direction is from the outside to the inside, so heat transfer occurs; the greater the temperature gradient, the faster the heat transfer speed. There are three forms of heat transfer, heat conduction, heat radiation and heat convection. Among them, the air cushion 1 has a heat reflecting coating inside and outside, so the proportion of heat radiation can be ignored; in addition, there is no heat convection in the gradient direction inside the air cushion; therefore, heat conduction is the main heat transfer mode.

[0064] To eliminate heat transfer, the low-temperature gas flow from the inside of the gas cylinder output by the first outlet a1 corresponds to the temperature gradient inside and outside the air cushion, and passes through the air cushion at a speed not less than a certain speed and carries away heat, thereby maintaining the stability of the temperature of the gas cylinder; the greater the temperature gradient, the greater the opening of the first opening a1 of the control valve, the more gas flows through the air cushion, the faster the flow rate, and the more heat carried away by the gas.

[0065] After the air cushion wraps the gas cylinder in a single layer, the heat flow per unit time conducted by the environment to the gas cylinder in the fire-fighting environment is Q 导 ,

[0066]

[0067] Where T 环 is the ambient temperature; T 瓶 is the temperature of the gas cylinder, d 瓶 is the diameter of the gas cylinder, h 瓶 is the height of the gas cylinder; λ 管 is the thermal conductivity of the air cushion; m 管 is the number of gas paths in the air cushion; n 管 is the thickness of the gas path wall in the air cushion, d 管 is the diameter of the gas tube in the air cushion, and λ 管 is the thermal conductivity.

[0068] According to GB / T 24161-2009 Periodic Inspection and Evaluation of Composite Gas Cylinders for Respirators, the upper limit of the gas cylinder temperature is 60°C, and according to the upper limit of the air respirator storage temperature, the target temperature difference for heat dissipation is fixed at 30 degrees; in a positive pressure respirator, the output gas pressure of the pressure reducer is about 0.5 MPa. Therefore, during the process of the gas flowing through the air cushion, the heat flow per unit time carried away is Q 散 ,

[0069] Q 散 = 30 × 0.5 × C 气 × ρ 气 × V 换

[0070] Where C 气 is the heat capacity of the bottled gas, ρ 气 is the density of the bottled gas under standard conditions, and V 换 is the air exchange rate of the air cushion 1 per unit time.

[0071] Let Q 散 = Q 导 , and the value of V 换 is calculated as follows,

[0072]

[0073] According to the valve regulation, set:

[0074]

[0075] Wherein, d a3 is the first opening diameter calculation value, k is the set adjustment coefficient, π is the circular constant, and Int represents the integer; da2 is the diameter of the second outlet a2 of the control valve 2, and V a2 is the gas output of the second outlet a2 per unit time.

[0076] After moving the term, it is as follows,

[0077]

[0078] In order to avoid frequent adjustment of the valve, the value is rounded, as follows:

[0079]

[0080] In this embodiment, the gas cylinder is a standard cylinder by default; and the number of layers of the air cushion wrapping the gas cylinder is 1 by default.

[0081] The application also provides a gas cylinder control system, which comprises a gas cylinder 6, a gas cylinder heat insulation and buffer pad, a pressure sensor, and a processor; the air cushion 1 is wrapped around the outer periphery of the gas cylinder 6, and the gas outlet valve of the gas cylinder is connected to the inlet of the control valve 2 through the gas inlet pipe 3; the pressure sensor is used for detecting the gas pressure in the gas cylinder, that is, the gas pressure in the gas cylinder. The temperature sensor is also arranged on the gas cylinder and used for detecting the temperature of the gas cylinder.

[0082] The processor is signal-connected with the pressure sensor, the temperature sensor, and the control valve 2, and the processor is also used for receiving environmental temperature information; the processor is used for calculating the opening area S of the first outlet a1 of the control valve 2 and sending the opening area S to the control valve, so that the control valve adjusts the opening area of the first opening a1 in real time according to the working environment.

[0083] Of course, for those skilled in the art, the application is not limited to the details of the above exemplary embodiments, but also includes the same or similar structures that can be realized in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0084] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0085] The technologies, shapes, and structural parts not described in detail in the present application are well-known technologies.

Claims

1. A gas cylinder control system employing gas cylinder insulation and buffer pads, characterized in that, The gas cylinder insulation and cushioning pad includes: gas cushion (1), control valve (2), inlet pipe (3), outlet pipe (4) and three-way valve (5); The air cushion (1) is provided with a one-way air passage; the inlet of the control valve (2) is connected to the air inlet pipe (3), its first outlet (a1) is connected to the air inlet end of the air cushion (1), and its second outlet (a2) is connected to the first inlet of the three-way valve (5) through the air outlet pipe (4); the air outlet end of the air cushion (1) is connected to the second inlet of the three-way valve (5). In use, the air cushion (1) covers the outer periphery of the gas cylinder (6), and the gas cylinder outlet valve is connected to the inlet of the control valve (2) through the inlet pipe (3); the control valve (2) is connected to the second outlet (a2) of the three-way valve (5) in a normally open state, and the opening degree of the control valve (2) connected to the first outlet (a1) of the air cushion (1) is adjusted according to the gas pressure inside the cylinder and the ambient temperature. The gas cylinder insulation and cushioning pad also includes an exhalation tube (7) and a breathing mask (8); the air inlet of the breathing mask (8) is connected to the outlet of the three-way valve (5); The gas cylinder control system includes a gas cylinder (6), a gas cylinder insulation and buffer pad, a pressure sensor and a processor; the pressure sensor is used to detect the gas pressure inside the gas cylinder, which is the gas pressure inside the gas cylinder; the processor is connected to the pressure sensor and the control valve (2) respectively, and the processor is also used to receive ambient temperature information.

2. The gas cylinder control system employing gas cylinder insulation and buffer pads as described in claim 1, characterized in that, The air cushion (1) has multiple parallel unidirectional air passages inside. The air inlet of the air cushion (1) is connected to the inlet of each air passage, and the air outlet of the air cushion (1) is connected to the outlet of each air passage.

3. The gas cylinder control system employing gas cylinder insulation and buffer pads as described in claim 2, characterized in that, The air cushion (1) is formed by multiple parallel air tubes that are bent in a serpentine shape and laid flat and bonded together; the air tubes have a rough surface.

4. The gas cylinder control system employing gas cylinder insulation and buffer pads as described in claim 1, characterized in that, The air cushion (1) is coated with a heat-insulating coating; the air cushion (1) is a flat structure or a sheath structure.

5. The gas cylinder control system employing gas cylinder insulation and buffer pads as described in any one of claims 1-4, characterized in that, The exhalation tube (7) is connected to the exhalation valve on the breathing mask (8); the exhalation tube (7) is used to secure the air cushion (1).

6. A cylinder control method for a cylinder control system employing cylinder insulation and buffer pads as described in any one of claims 1-5, characterized in that, First, set the lower limit of the internal pressure, the lower limit of the temperature, and the upper limit of the temperature, with the upper limit of the temperature being greater than the lower limit of the temperature; and monitor the internal pressure and ambient temperature in real time. When the gas pressure inside the cylinder is less than the lower pressure limit, or the ambient temperature is less than the lower temperature limit, the first outlet (a1) of the control valve (2) is closed, and the gas inside the cylinder is sent into the breathing mask (8) through the second outlet (a2) of the control valve (2). When the gas pressure inside the bottle is greater than or equal to the lower pressure limit and the ambient temperature is greater than the upper temperature limit, the first outlet (a1) of the control valve (2) is fully opened. When the gas pressure inside the bottle is greater than or equal to the lower pressure limit, and the ambient temperature is greater than or equal to the lower temperature limit and less than or equal to the upper temperature limit, the opening area S of the first outlet (a1) is calculated, and the control valve (2) is adjusted to execute the opening area S.

7. The gas cylinder control method as described in claim 6, characterized in that, The lower temperature limit is set to 31℃, the upper temperature limit is set to 59℃, and the lower pressure limit is set to 2M.

Images