Layered pressure feeding type output air bag
By setting a gas diaphragm inside the airbag to separate the upper and lower air chambers, and by utilizing the lifting effect of the connecting piece and the gas diaphragm, the problem that the gas inside the airbag cannot be spontaneously transported to the reactor is solved, thus achieving complete utilization of the gas and improving the gas supply efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN TEXTILE UNIV
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-09
Smart Images
Figure CN224332102U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airbag technology, specifically to a layered pressure delivery airbag. Background Technology
[0002] An airbag is a gas storage device that stores gas inside. When its outlet is connected to an external gas receiving device, such as a reactor, the gas inside is delivered to the reactor. However, in actual use, it has been found that when the pressure of the remaining gas stored in the airbag and the gas pressure inside the reactor reach a certain level, the gas flow rate delivered by the remaining gas stored in the airbag cannot meet the reaction requirements. More seriously, the gas in the airbag may not be spontaneously delivered to the reactor, resulting in low utilization of the gas stored in the airbag and reduced gas supply efficiency. The existing solution is to place a sufficient weight on the airbag, but because the airbag is ellipsoidal in shape, the weight cannot be placed stably on the airbag. To achieve stability, a large amount of manpower and time is required.
[0003] Therefore, there is an urgent need for a stratified pressure delivery airbag to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to solve the problem that when the pressure of the remaining gas stored in the airbag reaches equilibrium with the gas pressure inside the reactor, the remaining gas stored in the airbag cannot be spontaneously transported to the reactor, resulting in low utilization of the gas stored in the airbag and reduced gas supply efficiency. This invention provides a layered pressure-supplying output airbag.
[0005] The technical solution of this utility model is as follows:
[0006] A layered pressurized output airbag includes an airbag body and a gas diaphragm;
[0007] The gas diaphragm is disposed inside the airbag body and is used to divide the interior of the airbag body into an upper air chamber and a lower air chamber. The upper air chamber is provided with a first connecting member, which is used to connect an external gas receiving device to the interior of the upper air chamber and to control the input or output of gas inside the upper air chamber. The lower air chamber is provided with a second connecting member, which is used to connect an external gas supply source to the interior of the lower air chamber and to control the input or output of external gas to the lower air chamber.
[0008] Preferably, the first connecting member includes a first air guide pipe and a first switching valve. One end of the first air guide pipe is connected to the interior of the upper air chamber, and the other end is connected to an external air receiving device. The first switching valve is located on the end of the first air guide pipe located outside the upper air chamber.
[0009] Preferably, the end of the first air duct that connects to the interior of the upper air chamber is a flared opening.
[0010] Preferably, the first switching valve is a mechanical ball valve or a solenoid ball valve.
[0011] Preferably, the second connecting member includes a second air guide pipe and a second switching valve. One end of the second air guide pipe is connected to the interior of the lower air chamber, and the other end is connected to an external air supply source. The second switching valve is located on the end of the second air guide pipe located outside the lower air chamber.
[0012] Preferably, an air supply pump is also provided at one end of the second air pipe located outside the lower air chamber, for introducing gas at a set pressure into the lower air chamber.
[0013] Preferably, the second switching valve is a mechanical ball valve or a solenoid ball valve.
[0014] Preferably, the thickness of the gas diaphragm along its length direction first gradually increases from an initial thickness value to a first thickness value by a first predetermined length, then keeps the first thickness value unchanged by a second predetermined length, and finally continues to gradually increase from the first thickness value to a second thickness value by a third predetermined length.
[0015] Preferably, the initial thickness of one end of the gas diaphragm is 0.4-0.6 mm, the first thickness is 0.8-1.2 mm, and the second thickness is 1.8-2.2 mm; the first set length, the second set length, and the third set length may be the same or different.
[0016] Preferably, the gas diaphragm is made of rubber, specifically nitrile rubber.
[0017] According to the above technical solution, based on this layered pressurized output airbag, in actual use, the upper air chamber is first connected to an external gas receiving device such as a reactor through the first connecting member. Then, the target gas stored in the upper air chamber is transported to the reactor through the first connecting member. When the gas pressure in the upper air chamber reaches equilibrium with the gas pressure in the reactor and no longer actively supplies gas to the reactor, the gas from the external gas source, such as air, can be transported to the lower air chamber through the second connecting member. Then, the air entering the lower air chamber pushes the remaining target gas in the upper air chamber to continue to be transported to the reactor by raising the gas diaphragm, so that the target gas in the upper air chamber can be completely discharged at once, thereby improving the utilization rate of the target gas. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a layered pressure output airbag;
[0019] Figure 2This is a graph showing the thickness variation of the gas diaphragm in a layered pressurized output airbag.
[0020] Figure 3 This is a schematic diagram of the inflation process of the gas diaphragm in a layered pressure output airbag.
[0021] Explanation of reference numerals in the attached figures
[0022] 1. Airbag body; 11. Upper air chamber; 12. Lower air chamber; 2. Gas diaphragm; 3. First connecting member; 31. First air guide tube; 32. First switching valve; 4. Second connecting member; 41. Second air guide tube; 42. Second switching valve. Detailed Implementation
[0023] The following provides a detailed description of the specific embodiments of this utility model. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.
[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "comprising" and any variations thereof mean a non-exclusive inclusion, the possibility of the presence or addition of one or more other features, units, components, and / or combinations thereof.
[0025] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0026] This utility model provides a layered pressure-feeding output airbag, such as Figure 1 As shown, the layered pressurized output airbag includes an airbag body 1 and a gas diaphragm 2;
[0027] The gas diaphragm 2 is disposed inside the airbag body 1 and serves to divide the interior of the airbag body 1 into an upper air chamber 11 and a lower air chamber 12. The upper air chamber 11 is provided with a first connecting member 3, which connects an external gas receiving device to the interior of the upper air chamber 11 and controls the input or output of gas within the upper air chamber 11. The lower air chamber 12 is provided with a second connecting member 4, which connects an external gas supply source to the interior of the lower air chamber 12 and controls the input or output of external gas into the lower air chamber 12. The upper air chamber 11 is equivalent to the gas storage chamber of a conventional airbag. Gas within this chamber can be introduced through the first connecting member 3 or through other air inlets, depending on the actual application requirements.
[0028] According to the above technical solution, based on this layered pressurized output airbag, in actual use, the upper air chamber 11 is first connected to an external gas receiving device such as a reactor through the first connecting member 3. Then, the target gas stored in the upper air chamber 11 is transported to the reactor through the first connecting member 3. When the gas pressure in the upper air chamber 11 reaches equilibrium with the gas pressure in the reactor and no longer actively supplies gas to the reactor, the gas from the external gas source, such as air, can be transported to the lower air chamber 12 through the second connecting member 4. Then, the air entering the lower air chamber 12 pushes the remaining target gas in the upper air chamber 11 to continue to be transported to the reactor by raising the gas diaphragm 2, so that the target gas in the upper air chamber 11 can be completely discharged at once, thereby improving the utilization rate of the target gas.
[0029] In the layered pressurized output airbag of this utility model, preferably, the first connecting member 3 includes a first air guide pipe 31 and a first switching valve 32. One end of the first air guide pipe 31 is connected to the interior of the upper air chamber 11, and the other end is connected to an external air receiving device. The first switching valve 32 is located on the end of the first air guide pipe 31 located outside the upper air chamber 11. In practical applications, when it is necessary to supply gas to an external air receiving device such as a reactor, one end of the first air guide pipe 31 can be connected to the air receiving end of the reactor, and then gas can be delivered into the reactor by controlling the opening and closing of the first switching valve 32. Specifically, as shown in the figure... Figure 1 As shown, the first air guide tube 31 is located on the right side of the upper air chamber 11.
[0030] More preferably, one end of the first air guide tube 31 that connects to the interior of the upper air chamber 11 is a flared opening, which can better output the gas.
[0031] In one specific embodiment, the first switching valve 32 can be a mechanical ball valve or an electromagnetic ball valve, preferably an electromagnetic ball valve, so as to better control the output of gas in the upper air chamber 11.
[0032] In the layered pressure-feeding output airbag of this utility model, preferably, the second connecting member 4 includes a second air guide pipe 41 and a second switching valve 42. One end of the second air guide pipe 41 is connected to the interior of the lower air chamber 12, and the other end is connected to an external air supply source. The second switching valve 42 is located on the end of the second air guide pipe 41 located outside the lower air chamber 12. In practical applications, firstly, one end of the second air guide pipe 41 can be connected to an external air supply source, such as a gas cylinder. When the remaining gas pressure inside the upper air chamber 11 reaches equilibrium with the gas pressure inside the reactor, and gas is no longer actively supplied to the reactor, the gas in the gas cylinder can be supplied to the lower air chamber 12 by opening the second switching valve 42. Thus, the gas, such as air, entering the lower air chamber 12 can push the remaining target gas in the upper air chamber 11 to continue to be supplied to the reactor by raising the gas diaphragm 2.
[0033] In another preferred embodiment, a gas supply pump is also provided at the end of the second gas guide pipe 41 located outside the lower gas chamber 12, for introducing gas at a set pressure into the lower gas chamber 12. When a gas supply pump is provided, a gas cylinder is no longer required; external air is directly delivered to the lower gas chamber 12 via the gas supply pump, thus simplifying the structure. Preferably, a linkage mechanism can be designed to further improve the efficiency of gas supply to the reactor. Specifically, a flow measurement device can be installed at the gas receiving end of the reactor to detect the target gas flow rate. When the target gas flow rate drops to zero, the second switch valve 42 and the gas supply pump can be automatically opened to supply air to the lower gas chamber 12, thereby further improving the gas supply efficiency.
[0034] In one specific embodiment, the second switching valve 42 can be a mechanical ball valve or an electromagnetic ball valve, preferably an electromagnetic ball valve, so as to better control the gas entering or leaving the lower gas chamber 12, and to work in conjunction with the flow measurement device.
[0035] In the layered pressure output airbag described in this utility model, such as Figure 2As shown, preferably, the thickness of the gas diaphragm 2 along its length direction first gradually increases from an initial thickness value to a first thickness value by a first predetermined length, then maintains the first thickness value at a second predetermined length, and finally continues to gradually increase from the first thickness value to a second thickness value by a third predetermined length. The first, second, and third predetermined lengths may be the same or different, thereby better raising the gas diaphragm 2 to push the remaining target gas in the upper gas chamber 11 to continue to be transported into the reactor. Specifically, the initial thickness value of one end side of the gas diaphragm 2, i.e., the left side, is 0.4-0.6 mm, the first thickness value is 0.8-1.2 mm, and the second thickness value is 1.8-2.2 mm; the first, second, and third predetermined lengths are preferably the same, for example, all being equal.
[0036] More preferably, the gas diaphragm 2 is made of rubber. More preferably, the rubber is nitrile rubber NBR3604, which has good elasticity and airtightness, and can better separate the gas in the upper gas chamber 11 and the lower gas chamber 12.
[0037] Specifically, force has a transmission effect, so the force is equal at different locations. However, the cross-sectional area of the film is directly proportional to its thickness, thus there is a simple inverse relationship between stress and film thickness. In regions with thinner film thickness, stress (or strain) has a larger value, or in other words, stress tends to concentrate in regions with thinner film thickness. More specifically, the relationship between stress, material thickness, and curvature in rubber materials is as follows: In the formula, C is a constant greater than 0, d is the film thickness, and K is the curvature. This indicates that the material experiences the greatest stress due to strain in areas with smaller thickness or larger curvature. Therefore, the following formula is used. Figure 2 The segmented design of the gas diaphragm thickness shown is to ensure proper inflation, such as... Figure 3 As shown, the gas diaphragm will bulge preferentially from the thinner parts, followed by the thicker parts, thereby raising the gas diaphragm 2 from left to right to push the remaining target gas in the upper gas chamber 11 to be transported into the reactor.
[0038] The present invention will be described in detail below through embodiments, but the scope of protection of the present invention is not limited thereto.
[0039] Example 1
[0040] Adopting such Figure 1-2 The illustrated layered pressurized output airbag implementation specifically includes an airbag body 1 and a gas diaphragm 2.
[0041] The gas diaphragm 2 is disposed inside the airbag body 1 and is used to divide the interior of the airbag body 1 into an upper air chamber 11 and a lower air chamber 12. The upper air chamber 11 is provided with a first connecting member 3, which is used to connect an external gas receiving device to the interior of the upper air chamber 11 and to control the input or output of gas inside the upper air chamber 11. The lower air chamber 12 is provided with a second connecting member 4, which is used to connect an external gas supply source to the interior of the lower air chamber 12 and to control the input or output of external gas to the lower air chamber 12.
[0042] Specifically, the first connecting member 3 includes a first air guide pipe 31 and a first switching valve 32. One end of the first air guide pipe 31 is connected to the interior of the upper air chamber 11, and the other end is connected to an external air receiving device. The first switching valve 32 is located on the end of the first air guide pipe 31 located outside the upper air chamber 11. The end of the first air guide pipe 31 connected to the interior of the upper air chamber 11 is a flared opening. The first switching valve 32 is an electromagnetic ball valve. The second connecting member 4 includes a second air guide pipe 41 and a second switching valve 42. One end of the second air guide pipe 41 is connected to the interior of the lower air chamber 12, and the other end is connected to an external air supply source. The second switching valve 42 is located on the end of the second air guide pipe 41 located outside the lower air chamber 12. An air supply pump is also provided on the end of the second air guide pipe 41 located outside the lower air chamber 12 for introducing gas at a set pressure into the interior of the lower air chamber 12. The second switching valve 42 is an electromagnetic ball valve.
[0043] In practical applications, one end of the first gas guide pipe 31 is first connected to the gas receiving end of the reactor. Then, the first switch valve 32 is opened to transport the nitrogen stored in the upper gas chamber 11 into the reactor. When the gas pressure in the upper gas chamber 11 reaches equilibrium with the gas pressure in the reactor and nitrogen is no longer actively supplied to the reactor, the second switch valve 42 and the gas supply pump are opened. The gas from the external gas supply source is transported to the lower gas chamber 12 through the second gas guide pipe 41. Then, the air entering the lower gas chamber 12 pushes the remaining target gas in the upper gas chamber 11 to continue to be transported into the reactor by raising the gas diaphragm 2.
[0044] Testing revealed that, compared to ordinary airbags in the prior art, the layered pressure output airbag described in this invention allows all the nitrogen stored in the upper air chamber to be discharged at once, thereby effectively improving the utilization rate of nitrogen.
[0045] Example 2
[0046] Referring to Embodiment 1, the difference is that the thickness of the gas diaphragm 2, along its length, first gradually increases from an initial thickness value to a first thickness value with a first predetermined length, then maintains the first thickness value unchanged with a second predetermined length, and finally continues to gradually increase from the first thickness value to a second thickness value with a third predetermined length; the initial thickness value on the left end of the gas diaphragm 2 is 0.5 mm, the first thickness value is 1 mm, and the second thickness value is 2 mm; the first predetermined length, the second predetermined length, and the third predetermined length are the same and are all one-third of the length L of the gas diaphragm; the gas diaphragm 2 is made of rubber; the rubber is nitrile rubber.
[0047] Testing revealed that, compared to the scheme in Example 1, the layered pressure output airbag described in this invention can further improve the efficiency of nitrogen utilization by allowing all nitrogen stored in the upper air chamber to be discharged at once.
[0048] The layered pressure-feeding output airbag provided by this utility model, in actual use, firstly connects the upper air chamber to an external gas receiving device such as a reactor through the first connecting member. Then, based on the first connecting member, the target gas stored in the upper air chamber is transported to the reactor. When the gas pressure in the upper air chamber reaches equilibrium with the gas pressure in the reactor, and no longer actively supplies gas to the reactor, the gas from the external gas supply source, such as air, can be transported to the lower air chamber through the second connecting member. Then, the air entering the lower air chamber pushes the remaining target gas in the upper air chamber to continue to be transported to the reactor by raising the gas diaphragm, so that the target gas in the upper air chamber can be completely discharged at once, thereby improving the utilization rate of the target gas.
[0049] The preferred embodiments of this utility model have been described in detail above; however, this utility model is not limited thereto. Within the scope of the technical concept of this utility model, various simple modifications can be made to the technical solution of this utility model. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed by this utility model and all fall within the protection scope of this utility model.
Claims
1. A layered pressure delivery airbag, characterized in that, The layered pressure output airbag includes an airbag body (1) and a gas diaphragm (2); The gas diaphragm (2) is disposed inside the airbag body (1) and is used to divide the interior of the airbag body (1) into an upper air chamber (11) and a lower air chamber (12). A first connecting member (3) is disposed on the upper air chamber (11). The first connecting member (3) is used to connect an external gas receiving device to the interior of the upper air chamber (11) and to control the input or output of gas inside the upper air chamber (11). A second connecting member (4) is disposed on the lower air chamber (12). The second connecting member (4) is used to connect an external gas supply source to the interior of the lower air chamber (12) and to control the input or output of external gas to the lower air chamber (12).
2. The layered pressure-feeding output airbag according to claim 1, characterized in that, The first connecting member (3) includes a first air guide pipe (31) and a first switching valve (32). One end of the first air guide pipe (31) is connected to the interior of the upper air chamber (11), and the other end is connected to an external air receiving device. The first switching valve (32) is located on the end of the first air guide pipe (31) located outside the upper air chamber (11).
3. The layered pressure-feeding output airbag according to claim 2, characterized in that, The first air duct (31) has a flared end that connects to the interior of the upper air chamber (11).
4. The layered pressure-feeding output airbag according to claim 2, characterized in that, The first switching valve (32) is a mechanical ball valve or a solenoid ball valve.
5. The layered pressure-feeding output airbag according to claim 1, characterized in that, The second connecting member (4) includes a second air guide pipe (41) and a second switching valve (42). One end of the second air guide pipe (41) is connected to the interior of the lower air chamber (12), and the other end is connected to an external air supply source. The second switching valve (42) is located on the end of the second air guide pipe (41) located outside the lower air chamber (12).
6. The layered pressure-feeding output airbag according to claim 5, characterized in that, The second air duct (41) is also equipped with an air pump at one end outside the lower air chamber (12) for introducing gas at a set pressure into the lower air chamber (12).
7. The layered pressure-feeding output airbag according to claim 5, characterized in that, The second switching valve (42) is a mechanical ball valve or a solenoid ball valve.
8. The layered pressure-feeding output airbag according to claim 1, characterized in that, The thickness of the gas diaphragm (2) along its length direction first gradually increases from the initial thickness value to the first thickness value with a first set length, then keeps the first thickness value unchanged with a second set length, and finally continues to gradually increase from the first thickness value to the second thickness value with a third set length.
9. The layered pressure-feeding output airbag according to claim 8, characterized in that, The initial thickness of one end of the gas diaphragm (2) is 0.4-0.6 mm, the first thickness is 0.8-1.2 mm, and the second thickness is 1.8-2.2 mm; the first set length, the second set length, and the third set length are the same or different.
10. The layered pressure-feeding output airbag according to claim 1 or 8, characterized in that, The gas diaphragm (2) is made of rubber, specifically nitrile rubber.