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

Abstract

The invention 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, low in cost and suitable for popularization and application. In an extremely-low-concentration gas testing environment, the stable output of flow is ensured through dual physical regulation and control of the non-Newtonian fluid gating membrane and the micro air bag.

Description

Technical Field

[0001] The invention relates to the technical field of gas delivery control, and 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 in gas analysis and detection equipment systems is one of the key factors to ensure accurate detection of gas concentration. The stability of gas flow is critical to many applications, including chemical reaction control, environmental monitoring, medical equipment, and semiconductor manufacturing. In order to achieve the stability of gas flow, researchers and engineers have developed a variety of technical means.

[0003] Mechanical control is the earliest widely used flow stabilization technology, including throttle valves and pressure regulators. The throttle valve adjusts the gas flow by changing the cross-sectional area of ​​the throttle port. Although it has a simple structure and low cost, its adjustment accuracy is limited and it is easily affected by gas pressure fluctuations. The pressure regulator uses the action of the spring and valve core to automatically adjust the valve opening to maintain the stability of the output gas pressure, thereby stabilizing the flow to a certain extent. However, for situations where the flow changes greatly, the response speed of the pressure regulator may be slow.

[0004] With the development of electronic technology, electronic control has gradually become the mainstream. The mass flow controller uses a thermal or differential pressure sensor to measure the gas mass flow in real time, and accurately adjusts the valve through an electronic control unit to achieve a stable flow output. This technology has high regulation accuracy and fast response speed, and can adapt to various complex flow control needs, but it is expensive and has high requirements for gas cleanliness. The proportional valve controls the valve opening by receiving an electrical signal to achieve precise flow control. It has the advantages of high regulation accuracy and fast response speed, but the price is relatively high and the stability of the control signal is high.

[0005] In addition to the above methods, there are other ways, such as buffer tanks and gas flow meter feedback control. Buffer tanks smooth pressure and flow fluctuations by storing a certain amount of gas. They have a simple structure and low cost, but they take up a large space and have limited response to rapidly changing flow. 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, making adjustments based on flow deviations to improve flow stability. However, this requires high-precision flow meters and control systems, which are 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. Summary of the invention

[0008] The object of the present invention 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 is arranged in a cylindrical open shape, and an air inlet end cover and an air outlet end cover are respectively arranged at both ends of the shell, the air inlet end cover is connected to an air inlet pipe, and the air outlet end cover is connected to an air outlet pipe, a gate control membrane is arranged in the shell, the gate control membrane is located on a side close to the air inlet end cover, a micro air bag layer is arranged on an adjacent side of the gate control membrane, and the micro air bag layer is 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 rate to adjust the gas flow rate.

[0011] As a preferred technical solution, the micro-airbag layer is made of elastic material and has the characteristics of being expandable and contractible, 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 arranged on the outside of the gating membrane, and an air outlet filter is arranged 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 the inner diameter 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 present invention has the following beneficial effects:

[0018] The present invention is an adaptive gas delivery control device for gas analysis and detection. It uses a non-Newtonian fluid gating membrane and a micro-airbag layer with expandable and contractible functions to achieve adaptive adjustment of the gas flow rate, thereby improving the stability and accuracy of gas delivery. The careful design of the air inlet filter and the air outlet filter can effectively remove impurities in the gas and ensure the purity of the gas. The detachable connection design of the air inlet cover, the air outlet cover and the shell facilitates the daily maintenance and cleaning of the equipment, thereby extending the service life of the equipment.

[0019] The shell and connecting parts made of corrosion-resistant materials ensure the stable performance of the equipment in various gas environments, and enhance the application range and reliability of the equipment. It is small in size, simple in structure, and low in cost. In the extremely low concentration gas test environment, the dual physical regulation control of the non-Newtonian fluid gate membrane and the micro-airbag ensures the stable output of the flow. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0023] Figure 4 The diagram 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 is a shell; 21 is an air inlet cover; 22 is an air inlet pipe; 31 is an air outlet cover; 32 is an air outlet pipe; 41 is an air inlet filter; 42 is a support and positioning ring; 43 is a gate control membrane; 44 is a micro-airbag layer; 45 is an air outlet filter. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with 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 of the following disclosure.

[0027] Example

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a technical solution of an adaptive gas delivery control device for gas analysis and detection: comprising a cylindrical housing 1, with an inlet end cover 21 and an outlet end cover 31 respectively disposed at both ends. The inlet end cover 21 is connected to an inlet pipe 22, and the outlet end cover 31 is connected to an outlet pipe 32. A gate control membrane 43 is disposed in the housing 1, and the gate control membrane 43 is located on a side close to the inlet end cover 21. A micro-airbag layer 44 is disposed on the adjacent side of the gate control membrane 43, and the micro-airbag layer 44 is located on a side close to the outlet end cover 31.

[0029] The gated membrane 43 is a non-Newtonian fluid gated membrane, which can adjust its flow state and pore size according to the changes in external pressure and flow rate to adjust the gas flow rate. 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 gated membrane 43 to achieve adaptive flow control.

[0030] Specifically, non-Newtonian fluids have unique rheological properties, and their viscosity changes with shear force. 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, the pores of the gating membrane increase, and more fluid is allowed to pass through.

[0032] When the fluid enters the micro-airbag through the gated membrane 43, the micro-airbag will automatically adjust its volume according to the pressure and flow of the fluid. If the flow increases, the micro-airbag will expand, increase the storage space of the fluid, thereby relieving the pressure; if the flow decreases, the micro-airbag will shrink, release the stored fluid, and maintain a stable flow.

[0033] Among them, the adjacent sides of the gate control membrane 43 and the micro-airbag layer 44 are provided with support and positioning rings 42, which are installed 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. 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.

[0034] Among them, the inner diameter of the mesh of the air outlet filter 45 is smaller than the inner diameter of the mesh 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 a 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 designed to be 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] The adaptive gas delivery control device of the present invention can realize adaptive adjustment of the gas flow rate and improve the stability and accuracy of gas delivery. At the same time, the purity of the gas is ensured by the design of the air inlet filter and the air outlet filter, and the corrosion-resistant material selection of the shell and connecting parts enhances the application range and reliability of the device. In addition, the detachable design of the device facilitates daily maintenance and cleaning, and prolongs the service life of the device.

[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 particle 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 outlet filter 45, which further filters out smaller particles, ensures the purity of the gas, and is discharged from the outlet end cover 31. Throughout the process, the adaptive adjustment of the equipment ensures the stability and accuracy of the gas flow and meets the needs of gas analysis and detection.

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

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0041] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 should not be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; 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 appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 an outer shell (1), the outer shell (1) is arranged in a cylindrical open shape, an air inlet end cover (21) and an air outlet end cover (31) are arranged at two ends of the outer shell (1), an air inlet pipe (22) is arranged on the air inlet end cover (21), and an air outlet pipe (32) is arranged on the air outlet end cover (31), a gate control membrane (43) is arranged inside the outer shell (1), the gate control membrane (43) is located on a side close to the air inlet end cover (21), 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 adjust 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 being expandable and contractible, so as to cooperate with the non-Newtonian fluid gating 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: Support positioning rings (42) are provided on adjacent sides of the gate control membrane (43) and the micro-airbag layer (44); the support positioning rings (42) are installed 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 arranged outside the gate control membrane (43), and an air outlet filter (45) is arranged outside 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 outer shell (1) are designed to be detachably connected, so as 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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