Standard mixed gas preparation device
By designing a standard mixed gas preparation device including piston cylinder, gas storage cylinder and mixing box, the problem of insufficient accuracy and mixing uniformity of gas components in traditional mixed gas preparation methods is solved, and the precise ratio and uniform mixing of high-standard gases are achieved.
Patent Information
- Application Number
- CN202421853430.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional mixed gas preparation methods are limited by non-automated processes, resulting in insufficient accuracy of gas components and poor mixing uniformity, which affects the quality and reliability of standard gases.
A standard mixed gas preparation device is designed, including multiple piston cylinders, gas cylinders, air pressure sensors, one-way air inlets, electric push rods, flow sensors and mixing boxes. By precisely controlling the amount and proportion of the gas, the vortex generator and the mixing cylinder are used to achieve full mixing of gas.
It achieves precise control of gas mixing ratio and a significant improvement in mixing uniformity, which is suitable for high-standard gas ratio requirements, and improves the quality and reliability of standard gases.
Smart Images
Figure CN223027108U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical engineering, and particularly to a standard mixed gas preparation device. Background Art
[0002] Traditional methods for preparing mixed gases are limited by non - automated processes, resulting in insufficient accuracy of gas components and poor mixing uniformity, which directly affects the quality and reliability of the prepared standard gases. Especially in analytical and calibration applications that require extremely high accuracy, the lack of a professional device capable of automatically and precisely controlling the gas mixing ratio and ensuring high uniformity has become a key factor restricting the development of the field. Summary of the Utility Model
[0003] The utility model aims to at least partly solve one of the technical problems in the above - mentioned technologies.
[0004] To this end, an object of the present utility model is to provide a standard mixed gas preparation device that can accurately control the gas mixing ratio, improve the mixing uniformity, and meet the requirements for high - standard gas ratio.
[0005] To achieve the above object, an embodiment of the first aspect of the present utility model provides a standard mixed gas preparation device, including: a plurality of piston cylinders and gas storage cylinders. A pressure sensor and a one - way air inlet are provided on the piston cylinder. An electric push rod is provided at one end of the piston cylinder, and the movable rod of the electric push rod is connected to the piston of the piston cylinder. A flow sensor and a mixing box are provided at the other end of the piston cylinder. The air inlet end of the flow sensor is communicated with the piston cylinder, and the air outlet end of the flow sensor is communicated with the mixing box. The mixing box is communicated with one end of the gas storage cylinder.
[0006] The standard mixed gas preparation device according to the embodiment of the present utility model can accurately control the gas mixing ratio, improve the mixing uniformity, and meet the requirements for high - standard gas ratio.
[0007] In addition, the standard mixed gas preparation device according to the above - mentioned embodiment of the present utility model may further have the following additional technical features:
[0008] In an embodiment of the present utility model, a plurality of eddy current generators are arranged inside the mixing box. When the gas inside the piston cylinder enters the mixing box, the gas inside the piston cylinder passes through the eddy current generators.
[0009] In an embodiment of the present utility model, a mixing cylinder is provided on the conduit between the mixing box and the gas storage cylinder.
[0010] In one embodiment of the present utility model, valves are provided at one end of the gas storage cylinder close to the mixing cylinder and one end of the mixing cylinder close to the mixing box.
[0011] In one embodiment of the present utility model, a spiral baffle is provided in the mixing cylinder, and through holes are provided on the spiral baffle.
[0012] In one embodiment of the present utility model, an air pump is provided at the other end of the gas storage cylinder.
[0013] In one embodiment of the present utility model, a travel switch is provided at one end of the piston cylinder close to the electric push rod.
[0014] In one embodiment of the present utility model, the piston cylinder, the electric push rod, and the mixing box are respectively arranged on the bracket through connecting pieces.
[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0016] The above-mentioned and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, wherein:
[0017] Figure 1 is a schematic structural diagram of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 1 ;
[0018] Figure 2 is a schematic structural diagram of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 1 ;
[0019] Figure 3 is a schematic structural diagram of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 1 ;
[0020] Figure 4 is a schematic structural diagram of the mixing box of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 1 ;
[0021] Figure 5 is a schematic structural diagram of the mixing box of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 2 ;
[0022] Figure 6 is a schematic structural diagram of the mixing cylinder of a standard mixed gas preparation device according to an embodiment of the present utility model Figure 1 ;
[0023] As shown in the figure:
[0024] 1 - Piston cylinder, 2 - Gas storage cylinder, 3 - Pressure sensor, 4 - Unidirectional air inlet, 5 - Electric push rod, 6 - Flow sensor, 7 - Mixing tank, 8 - Eddy current generator, 9 - Mixing cylinder, 10 - Valve, 11 - Spiral baffle, 12 - Air pump, 13 - Travel switch, 14 - Bracket. Specific implementation mode
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0026] Next, a standard mixed gas preparation device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
[0027] Specifically, the standard mixed gas preparation device disclosed in the present invention can be used to prepare a "four-in-one" industrial safety monitoring standard gas.
[0028] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a standard mixed gas preparation device includes: a plurality of piston cylinders 1 and gas storage cylinders 2. A pressure sensor 3 and a unidirectional air inlet 4 are provided on the piston cylinder 1. An electric push rod 5 is provided at one end of the piston cylinder 1. The movable rod of the electric push rod 5 is connected to the piston of the piston cylinder 1. A flow sensor 6 and a mixing tank 7 are provided at the other end of the piston cylinder 1. The air inlet end of the flow sensor 6 is communicated with the piston cylinder 1, and the air outlet end of the flow sensor 6 is communicated with the mixing tank 7. One end of the mixing tank 7 is communicated with the gas storage cylinder 2.
[0029] Specifically, in the initial preparation stage, during the component configuration process, a plurality of piston cylinders 1 (for example, four) are used. Each piston cylinder 1 is equipped with a pressure sensor 3 and a unidirectional air inlet 4. One end of each piston 1 is connected to an electric push rod 5. The movable rod of the electric push rod 5 is connected to the piston. A flow sensor 6 is installed at the other end of the piston cylinder 1 and is connected to the mixing tank 7. The mixing tank 7 is finally connected to the gas storage cylinder 2.
[0030] Relevant staff connect the pressure sensor 3 and the electric push rod 5 to the control system to ensure the signal communication between the pressure sensor 3 and the electric push rod 5 and the controller in the control system.
[0031] In the gas introduction stage, during the gas selection and access process, pure gases (such as carbon monoxide, carbon dioxide, nitrogen dioxide, and ammonia) are respectively introduced into each piston cylinder. The pressure sensor 3 is used to monitor the piston cylinder 1 and feedback the data to the controller to accurately control the amount of gas;
[0032] When the imported gas reaches a predetermined pressure or volume, the air inlet is automatically closed to stop the gas import.
[0033] In the mixing and transfer stage, during the gas mixing process, the controller activates the electric push rod 5 to push the piston to push the gas in each piston cylinder 1 into the mixing tank 7. In the mixing tank 7, the gas is fully mixed by means of turbulence or diffusion.
[0034] Finally, the fully mixed gas is transferred from the mixing tank 7 to the gas storage cylinder 2 to complete the preparation of the standard mixed gas. The mixed standard gas is stored in the gas storage cylinder 2 for subsequent analysis or calibration use.
[0035] The standard mixed gas preparation device according to the embodiment of the present utility model can accurately control the gas mixing ratio, improve the mixing uniformity, and is applicable to the high-standard gas ratio requirements.
[0036] In addition, it should be noted that as Figure 4 and Figure 5 shown, a plurality of eddy current generators 8 are arranged inside the mixing tank 7. When the gas inside the piston cylinder 1 enters the mixing tank 7, the gas inside the piston cylinder 1 passes through the eddy current generator 8.
[0037] A mixing cylinder 9 is arranged on the conduit between the mixing tank 7 and the gas storage cylinder 2.
[0038] Valves 10 are arranged at both the end of the gas storage cylinder 2 close to the mixing cylinder 9 and the end of the mixing cylinder 9 close to the mixing tank 7.
[0039] A spiral baffle 11 is arranged in the mixing cylinder 9, and through holes are arranged on the spiral baffle 11.
[0040] A plurality of eddy current generators 8 are arranged inside the mixing tank 7. Four kinds of pure gases (such as carbon monoxide, carbon dioxide, nitrogen dioxide, and ammonia) generate eddy currents and are quickly mixed after passing through the eddy current generator 8.
[0041] At the same time, the four kinds of pure gases (such as carbon monoxide, carbon dioxide, nitrogen dioxide, and ammonia) passing through the mixing tank 7 are further mixed after passing through the mixing cylinder 9, making the quality of the mixed gas higher.
[0042] It should also be noted that as for the standard mixed gas preparation device, it is characterized in that an air pump 12 is arranged at the other end of the gas storage cylinder 2.
[0043] A travel switch 13 is arranged at the end of the piston cylinder 1 close to the electric push rod 5.
[0044] The travel switch 13 can be used to check whether the movement of the piston driven by the electric push rod 5 in the piston cylinder 1 is in place, so as to avoid the cumulative error caused by wear or other reasons after the long-term use of the electric push rod 5.
[0045] Finally, the piston cylinder 1, the electric push rod 5, and the mixing tank 7 are respectively arranged on the bracket 14 through connecting pieces.
[0046] In summary, the standard mixed gas preparation device according to the embodiment of the present invention can accurately control the gas mixing ratio, improve the mixing uniformity, and is applicable to the high-standard gas ratio requirements.
[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.
Claims
1. A standard mixed gas preparation device, characterized in that: include: A plurality of piston cylinders (1) and gas storage bottles (2), wherein the piston cylinder (1) is provided with an air pressure sensor (3) and a one-way air inlet (4), one end of the piston cylinder (1) is provided with an electric push rod (5), the movable rod of the electric push rod (5) is connected to the piston of the piston cylinder (1), and the other end of the piston cylinder (1) is provided with a flow sensor (6) and a mixing box (7), the air inlet end of the flow sensor (6) is connected to the piston cylinder (1), the air outlet end of the flow sensor (6) is connected to the mixing box (7), and the mixing box (7) is connected to one end of the gas storage bottle (2).
2. The standard mixed gas preparation device according to claim 1, characterized in that: A plurality of vortex generators (8) are arranged inside the mixing box (7). When the gas inside the piston cylinder (1) enters the mixing box (7), the gas inside the piston cylinder (1) passes through the vortex generators (8).
3. The standard mixed gas preparation device according to claim 1, characterized in that: A mixing cylinder (9) is arranged on the conduit between the mixing box (7) and the gas storage bottle (2).
4. The standard mixed gas preparation device according to claim 3, characterized in that: One end of the gas storage bottle (2) close to the mixing cylinder (9) and one end of the mixing cylinder (9) close to the mixing box (7) are both provided with valves (10).
5. The standard mixed gas preparation device according to claim 3, characterized in that: The mixing cylinder (9) is provided with a spiral baffle (11), and the spiral baffle (11) is provided with a through hole.
6. The standard mixed gas preparation device according to claim 1, characterized in that: An air pump (12) is provided on the other end of the gas storage bottle (2).
7. The standard mixed gas preparation device according to claim 1, characterized in that: A travel switch (13) is provided at one end of the piston cylinder (1) close to the electric push rod (5).
8. The standard mixed gas preparation device according to claim 1, characterized in that: The piston cylinder (1), the electric push rod (5) and the mixing box (7) are respectively arranged on a bracket (14) through connecting pieces.