Self-adaptive gas conveying control equipment for gas analysis and detection

Abstract

The utility model relates to the technical field of gas delivery control, and discloses self-adaptive gas delivery control equipment for gas analysis and detection, a shell is cylindrical, and two ends of the shell are a gas inlet end cover and a gas outlet end cover which are respectively connected with a gas inlet pipe and a gas outlet pipe. And a micro air bag layer is arranged beside the gating film and is close to the air outlet end cover. According to the self-adaptive gas conveying control equipment for gas analysis and detection, the non-Newtonian fluid gating film and the micro-airbag layer with the expansion and contraction functions are utilized, self-adaptive adjustment of the gas flow rate can be achieved, then the stability and accuracy of gas conveying are improved, and the self-adaptive gas conveying control equipment is small in size, simple in structure and convenient to use. The device is simple in structure and low in cost, and stable output of flow is ensured through dual physical regulation and control of the non-Newtonian fluid gating membrane and the micro air bag in an extremely-low-concentration gas testing environment.

Description

Technical Field

[0001] The utility model relates to the technical field of gas delivery control, in particular to a self-adaptive gas delivery control device for gas analysis and detection. Background Art

[0002] In modern industry and science, the stability of gas flow rates in gas analysis and detection systems is a key factor in ensuring accurate gas concentration measurements. Gas flow stability is crucial for many applications, including chemical reaction control, environmental monitoring, medical devices, and semiconductor manufacturing. To achieve this, researchers and engineers have developed a variety of technical approaches.

[0003] Mechanical control methods were the first widely adopted flow stabilization technologies, including throttle valves and pressure-stabilizing valves. Throttle valves adjust gas flow by varying the cross-sectional area of ​​the orifice. Despite their simple structure and low cost, they suffer from limited adjustment accuracy and are susceptible to fluctuations in gas pressure. Pressure-stabilizing valves utilize a spring and valve core to automatically adjust the valve opening to maintain a stable output gas pressure, thereby stabilizing flow to a certain extent. However, pressure-stabilizing valves can be slow to respond to large flow fluctuations.

[0004] With the development of electronic technology, electronic control has gradually become mainstream. Mass flow controllers use thermal or differential pressure sensors to measure gas mass flow in real time and precisely adjust the valve via an electronic control unit to achieve stable flow output. This technology offers high regulation accuracy and fast response, adapting to various complex flow control needs. However, it is costly and requires high gas cleanliness. Proportional valves control valve opening by receiving electrical signals, achieving precise flow control. They offer advantages such as high regulation accuracy and fast response, but are relatively expensive and require high stability of the control signal.

[0005] In addition to the above methods, there are other approaches, such as buffer tanks and gas flow meter feedback control. Buffer tanks store a certain amount of gas to smooth pressure and flow fluctuations. While simple and low-cost, they take up a lot of space and have limited responsiveness to rapidly changing flow rates. Gas flow meter feedback control uses a flow meter to monitor gas flow in real time and feeds the signal back to the control system, adjusting it based on flow deviations to improve flow stability. However, this requires a high-precision flow meter and control system, which is costly.

[0006] Currently, although the gas flow stabilization methods on the market are effective, they are costly and the systems are complex, which limits their application in the mass use of precision equipment.

[0007] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop an adaptive gas delivery control device for gas analysis and detection. Utility Model Content

[0008] The purpose of the utility model is to provide an adaptive gas delivery control device for gas analysis and detection, so as to solve the common problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive gas delivery control device for gas analysis and detection, comprising a shell, the shell being arranged in a cylindrical open shape, an air inlet end cover and an air outlet end cover being respectively provided at both ends of the shell, an air inlet end cover being connected to an air inlet pipe, and an air outlet end cover being connected to an air outlet pipe, a gate control membrane being provided in the shell, the gate control membrane being located on a side close to the air inlet end cover, a micro air bag layer being provided on an adjacent side of the gate control membrane, and the micro air bag layer being located on a side close to the air outlet end cover.

[0010] As a preferred technical solution, the gating membrane is a non-Newtonian fluid gating membrane, which can adjust its own flow state and pore size according to changes in external pressure and flow to regulate the gas flow rate.

[0011] As a preferred technical solution, the micro-airbag layer is made of elastic material and has the characteristics of expansion and contraction, so as to cooperate with the non-Newtonian fluid gating membrane to achieve adaptive flow control.

[0012] As a preferred technical solution, adjacent sides of the gate control membrane and the micro airbag layer are provided with support positioning rings, which are installed on the inner wall of the shell and are used to support and limit the gate control membrane and the micro airbag layer.

[0013] As a preferred technical solution, an air inlet filter is provided on the outside of the gate control membrane, and an air outlet filter is provided on the outside of the micro-airbag layer. The air inlet filter and the air outlet filter are used to filter impurities in the gas to ensure the purity of the gas.

[0014] As a preferred technical solution, the inner diameter of the outlet filter mesh is smaller than that of the inlet filter mesh. The inlet filter can block larger particles in the gas, and the outlet filter has a higher filtering accuracy and can effectively filter out smaller particles.

[0015] As a preferred technical solution, the air inlet end cover, the air outlet end cover and the outer shell are designed to be detachably connected to facilitate disassembly and maintenance.

[0016] As a preferred technical solution, the housing, air inlet end cover, air inlet pipe, air outlet end cover and air outlet pipe are all made of corrosion-resistant materials to ensure that the equipment can maintain stable performance in various gas environments.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This utility model is an adaptive gas delivery control device for gas analysis and testing. Utilizing a non-Newtonian fluid gating membrane and an expandable and contractible micro-bladder layer, it achieves adaptive regulation of gas flow rate, thereby improving the stability and accuracy of gas delivery. Carefully designed inlet and outlet filters effectively remove impurities from the gas, ensuring gas purity. The removable connection between the inlet and outlet caps and the housing facilitates routine maintenance and cleaning, extending the device's service life.

[0019] The housing and connecting components are constructed of corrosion-resistant materials, ensuring stable performance in a variety of gas environments and enhancing its applicability and reliability. Its compact size, simple structure, and low cost ensure stable flow output even in extremely low-concentration gas testing environments through the dual physical regulation of a non-Newtonian fluid gated membrane and micro-airbags. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the overall structure of an adaptive gas delivery control device for gas analysis and detection;

[0021] Figure 2 A schematic diagram of the disassembled structure of an adaptive gas delivery control device for gas analysis and detection;

[0022] Figure 3 A schematic diagram of the structure of the delivery principle of an adaptive gas delivery control device for gas analysis and detection;

[0023] Figure 4 The figure is a schematic diagram of the state principle structure of an adaptive gas delivery control device used for gas analysis and detection.

[0024] In the accompanying drawings: 1, outer shell; 21, air inlet end cover; 22, air inlet pipe; 31, air outlet end cover; 32, air outlet pipe; 41, air inlet filter; 42, support and positioning ring; 43, gate control membrane; 44, micro airbag layer; 45, air outlet filter. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example

[0028] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the present invention provides a technical solution for an adaptive gas delivery control device for gas analysis and detection. The device comprises a cylindrical housing 1, with an inlet cap 21 and an outlet cap 31 disposed at either end. The inlet cap 21 is connected to an inlet pipe 22, and the outlet cap 31 is connected to an outlet pipe 32. A gated membrane 43 is disposed within the housing 1, located near the inlet cap 21. A micro-airbag layer 44 is disposed adjacent to the gated membrane 43, located near the outlet cap 31.

[0029] The gated membrane 43 is a non-Newtonian fluid gated membrane that adjusts its flow state and pore size according to changes in external pressure and flow rate to regulate gas flow rate. The micro-airbag layer 44 is made of an elastic material with expandable and contractible properties, enabling it to work with the non-Newtonian fluid gated membrane 43 to achieve adaptive flow control.

[0030] Specifically, non-Newtonian fluids have unique rheological properties, with their viscosity changing with shear forces. In this gated membrane, non-Newtonian fluids can adjust their flow state and pore size according to changes in external pressure and flow.

[0031] When the fluid pressure is low, the non-Newtonian fluid exhibits a higher viscosity, and the pores of the gating membrane are smaller, which limits the flow rate; when the fluid pressure increases, the viscosity of the non-Newtonian fluid decreases, and the pores of the gating membrane increase, allowing more fluid to pass through.

[0032] When fluid enters the micro-balloon through the gated membrane 43, the micro-balloon automatically adjusts its volume based on the fluid's pressure and flow rate. If the flow rate increases, the micro-balloon expands, increasing the fluid storage space and thus relieving pressure. If the flow rate decreases, the micro-balloon contracts, releasing the stored fluid and maintaining a stable flow rate.

[0033] A support and positioning ring 42 is provided on adjacent sides of the gate control membrane 43 and the micro-airbag layer 44. The support and positioning ring 42 is mounted on the inner wall of the housing 1 and serves to support and limit the gate control membrane 43 and the micro-airbag layer 44. An inlet filter 41 is located outside the gate control membrane 43, and an outlet filter 45 is located outside the micro-airbag layer 44. The inlet and outlet filters 41 and 45 filter impurities in the gas to ensure gas purity.

[0034] Among them, the mesh inner diameter of the air outlet filter 45 is smaller than the mesh inner diameter of the air inlet filter 41. The air inlet filter 41 can block larger particles in the gas, and the air outlet filter 45 has higher filtering accuracy and can effectively filter out smaller particles.

[0035] The air inlet cover 21, the air outlet cover 31 and the housing 1 are detachably connected to facilitate disassembly and maintenance.

[0036] Among them, the housing 1, the air inlet end cover 21, the air inlet pipe 22, the air outlet end cover 31 and the air outlet pipe 32 are all made of corrosion-resistant materials to ensure that the equipment can maintain stable performance in various gas environments.

[0037] This adaptive gas delivery control device enables adaptive regulation of gas flow rate, improving the stability and accuracy of gas delivery. Furthermore, the design of the inlet and outlet filters ensures gas purity, while the corrosion-resistant materials used for the housing and connecting components enhance the device's applicability and reliability. Furthermore, the device's detachable design facilitates routine maintenance and cleaning, extending its service life.

[0038] In this embodiment, the gas enters the device through the air inlet end cover 21. The air inlet filter 41 first filters out larger particulate impurities in the gas, and then the gas enters the gating membrane 43. The gating membrane 43 automatically adjusts the pore size according to the pressure and flow of the gas to control the flow rate of the gas. After the gas passes through the gating membrane 43, it enters the micro-airbag layer 44, which automatically expands or contracts according to the pressure and flow of the gas to further stabilize the gas flow. Finally, the gas passes through the air outlet filter 45, which further filters out smaller particles to ensure the purity of the gas before being discharged from the air outlet end cover 31. Throughout the process, the adaptive adjustment of the equipment ensures the stability and accuracy of the gas flow, meeting the needs of gas analysis and detection.

[0039] The working principle and use process of the utility model: After the utility model is installed, it works according to the above implementation method until all working steps are completed.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive gas delivery control device for gas analysis and detection, characterized in that: The invention comprises a housing (1), wherein the housing (1) is arranged in a cylindrical open shape, and an air inlet end cover (21) and an air outlet end cover (31) are respectively arranged at both ends of the housing (1), the air inlet end cover (21) is connected to an air inlet pipe (22), and the air outlet end cover (31) is connected to an air outlet pipe (32), and a gate control membrane (43) is arranged inside the housing (1), the gate control membrane (43) is located on a side close to the air inlet end cover (21), and a micro air bag layer (44) is arranged on an adjacent side of the gate control membrane (43), and the micro air bag layer (44) is located on a side close to the air outlet end cover (31).

2. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: The gated membrane (43) is a non-Newtonian fluid gated membrane, which can adjust its own flow state and pore size according to changes in external pressure and flow rate to regulate the gas flow rate.

3. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: The micro-airbag layer (44) is made of elastic material and has the characteristics of expansion and contraction, so as to cooperate with the non-Newtonian fluid gate membrane to achieve adaptive flow control.

4. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: Adjacent sides of the gate control membrane (43) and the micro airbag layer (44) are both provided with support and positioning rings (42). The support and positioning rings (42) are mounted on the inner wall of the housing (1) and are used to support and limit the gate control membrane (43) and the micro airbag layer (44).

5. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: An air inlet filter (41) is provided on the outside of the gate control membrane (43), and an air outlet filter (45) is provided on the outside of the micro-airbag layer (44). The air inlet filter (41) and the air outlet filter (45) are used to filter impurities in the gas to ensure the purity of the gas.

6. The adaptive gas delivery control device for gas analysis and detection according to claim 5, characterized in that: The inner diameter of the mesh of the outlet filter (45) is smaller than the inner diameter of the mesh of the inlet filter (41). The inlet filter (41) can block larger particles in the gas, while the outlet filter (45) has a higher filtering accuracy and can effectively filter out smaller particles.

7. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: The air inlet end cover (21), the air outlet end cover (31) and the housing (1) are designed to be detachably connected to facilitate disassembly and maintenance.

8. The adaptive gas delivery control device for gas analysis and detection according to claim 1, characterized in that: The housing (1), the air inlet end cover (21), the air inlet pipe (22), the air outlet end cover (31) and the air outlet pipe (32) are all made of corrosion-resistant materials, ensuring that the device can maintain stable performance in various gas environments.

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