Dynamic gas ratio monitoring device

Abstract

The utility model discloses a dynamic gas proportion monitoring device which comprises a monitoring box, a gas inlet pipe is installed on the outer wall of the monitoring box and communicated with the interior of the monitoring box, a lead screw sleeve and a piston are connected in the device box in a sliding mode, the lead screw sleeve is connected with the piston through two sets of connecting rods, and a driving mechanism for driving the lead screw sleeve to slide is installed in the device box. An electric heating wire is mounted on the inner wall of the device box, and a monitoring probe is mounted at the bottom in the monitoring box. Heat conduction oil is heated through the electric heating wire, and the heated heat conduction oil is injected into the temperature control cavity through the lead screw sleeve and the piston which are driven by the servo motor, so that the temperature in the monitoring box is accurately regulated and controlled, and the influence of external environment temperature fluctuation on gas physical properties such as density and flow velocity is effectively avoided; and the component proportion of the gas is kept stable after the gas enters the monitoring box, so that the gas proportion monitoring accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, in particular to a dynamic gas ratio monitoring device. Background Art

[0002] A dynamic gas ratio monitoring device is a device used to monitor and control gas mixture ratios in real time. It is commonly used in industrial and laboratory environments where precise gas ratios are required. The device automatically adjusts the flow rates of different gases according to set requirements and monitors the ratios of each gas in the mixture, ensuring the stability and accuracy of the gas mixture.

[0003] At present, some gas proportion monitoring systems monitor the gas composition by extracting gas samples from the proportioning box during use, so as to achieve real-time monitoring of the mixed gas. However, in actual use, after the gas is extracted from the proportioning box and enters the monitoring box for measurement, it may be affected by changes in ambient temperature, causing the physical properties of the gas (such as flow rate and density) to change. The well-mixed gas in the proportioning box may be distorted in the process of being transmitted to the monitoring box due to temperature or pressure changes, thereby affecting the accuracy of the monitoring results. Therefore, it is necessary to propose a dynamic gas proportion monitoring device to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a dynamic gas ratio monitoring device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A dynamic gas ratio monitoring device includes a monitoring box, an air inlet pipe is installed on the outer wall of the monitoring box and is connected to the interior of the monitoring box, a temperature control chamber is opened in the monitoring box, and the spiral disk of the temperature control chamber is arranged inside the monitoring box, a device box is installed on the upper end of the monitoring box, two groups of connecting pipes are installed on the outer wall of the device box, and the ends of the two groups of connecting pipes are respectively connected to the two ends of the temperature control chamber, heat transfer oil is injected into the device box, a screw sleeve and a piston are slidably connected in the device box, the screw sleeve is connected to the piston through two groups of connecting rods, a driving mechanism for driving the screw sleeve to slide is installed in the device box, an electric heating wire is installed on the inner wall of the device box, and a monitoring probe is installed at the bottom of the monitoring box.

[0007] Preferably, the driving mechanism includes a reciprocating screw rotatably connected to the bottom of the device box, the screw sleeve is threadedly connected to the reciprocating screw thread segment, the inner wall of the device box and the outer wall of the screw sleeve are both flat, and the outer walls on both sides of the screw sleeve are in contact with the inner wall of the device box.

[0008] Preferably, a rotating rod is rotatably connected to the top of the monitoring box, and a plurality of groups of blades are provided at equal intervals on the outer wall of the rotating rod, and the plurality of groups of blades are all tilted.

[0009] Preferably, the end of the reciprocating screw is fixedly connected to a limit block, and the radius of the limit block is larger than the radius of the reciprocating screw.

[0010] Preferably, the upper end surface of the monitoring box is rotatably connected with two sets of gears, the two sets of gears are meshed with each other, and the two sets of gears are coaxially fixedly connected to the reciprocating screw and the rotating rod respectively.

[0011] Preferably, a servo motor is fixedly connected to the upper end of the monitoring box, and the end of the output shaft of the servo motor is coaxially fixedly connected to the adjacent gear.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model heats the heat transfer oil through an electric heating wire, and injects the heated heat transfer oil into the temperature control chamber with the help of a screw sleeve and a piston driven by a servo motor, thereby achieving precise control of the temperature inside the monitoring box, effectively avoiding the influence of external ambient temperature fluctuations on the physical properties of the gas, such as density and flow rate, and ensuring that the component ratio of the gas remains stable after entering the monitoring box, thereby improving the accuracy of gas ratio monitoring.

[0014] 2. Through the rotation of the rotating rod and the blades, the utility model fully mixes the gas inside the monitoring box, avoiding the problem of uneven local gas composition. In addition, the flow of heat transfer oil in the temperature control chamber ensures uniform temperature inside the monitoring box, thereby further improving the uniformity of gas mixing, making the gas sample in the monitoring box more representative, helping to improve the accuracy of gas composition analysis by the monitoring probe and ensuring accurate control of gas ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the dynamic gas ratio monitoring device proposed in the present utility model;

[0016] Figure 2 for Figure 1 Structural diagram.

[0017] Figure 3 for Figure 1 Sectional view.

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the middle gear, servo motor and device box.

[0019] Figure 5 for Figure 4 Cross-sectional view of the middle device box.

[0020] In the figure: 1. Monitoring box; 2. Air intake pipe; 3. Device box; 4. Servo motor; 5. Connecting pipe; 6. Temperature control chamber; 7. Gear; 8. Reciprocating screw; 9. Connecting rod; 10. Screw sleeve; 11. Piston; 12. Heating wire; 13. Rotating rod; 14. Blade; 15. Monitoring probe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-5 The dynamic gas ratio monitoring device includes a monitoring box 1, an air inlet pipe 2 is installed on the outer wall of the monitoring box 1, and is connected to the interior of the monitoring box 1, a temperature control chamber 6 is opened in the monitoring box 1, and the spiral disk of the temperature control chamber 6 is arranged inside the monitoring box 1, and a device box 3 is installed on the upper end of the monitoring box 1, and two groups of connecting pipes 5 are installed on the outer wall of the device box 3. The ends of the two groups of connecting pipes 5 are respectively connected to the two ends of the temperature control chamber 6, and heat transfer oil is injected into the device box 3. A screw sleeve 10 and a piston 11 are slidingly connected in the device box 3. The screw sleeve 10 is connected to the piston 11 through two groups of connecting rods 9. A driving mechanism for driving the screw sleeve 10 to slide is installed in the device box 3, and an electric heating wire 12 is installed on the inner wall of the device box 3. A monitoring probe 15 is installed at the bottom of the monitoring box 1; the heat transfer oil can be heated by the electric heating wire 12, and the heat transfer oil can be injected into the temperature control chamber 6 in conjunction with the sliding of the piston 11, so as to regulate the internal temperature of the monitoring box 1.

[0023] The driving mechanism includes a reciprocating screw 8 rotatably connected to the bottom of the device box 3, a screw sleeve 10 is threadedly connected to the threaded section of the reciprocating screw 8, the inner wall of the device box 3 and the outer wall of the screw sleeve 10 are both flat, and the outer walls of the screw sleeve 10 on both sides are in contact with the inner wall of the device box 3. The top of the monitoring box 1 is rotatably connected to a rotating rod 13, and the outer wall of the rotating rod 13 is provided with multiple groups of blades 14 at equal intervals, and the multiple groups of blades 14 are all inclined. The rotation of the rotating rod 13 and the blades 14 ensures that the gas is fully mixed inside the monitoring box 1 to avoid uneven local composition of the gas.

[0024] The end of the reciprocating screw 8 is fixedly connected to a limit block, and the radius of the limit block is larger than the radius of the reciprocating screw 8. The upper end surface of the monitoring box 1 is rotatably connected to two sets of gears 7, and the two sets of gears 7 are engaged with each other. The two sets of gears 7 are coaxially fixedly connected to the reciprocating screw 8 and the rotating rod 13 respectively. The upper end of the monitoring box 1 is fixedly connected to a servo motor 4, and the end of the output shaft of the servo motor 4 is coaxially fixedly connected to the adjacent gear 7; it should be noted that a one-way valve is installed in both sets of connecting pipes 5 to prevent the heat transfer oil from flowing back.

[0025] In the present invention, when the device is used specifically: after the gas is extracted from the proportioning box through the air inlet pipe 2, it enters the interior of the monitoring box 1 and is ready to monitor the gas proportioning. During this process, the internal environment of the monitoring box 1 may change due to external temperature and pressure fluctuations. Therefore, it is necessary to accurately control the temperature inside the monitoring box 1. The device box 3 is filled with heat transfer oil, and the heating wire 12 installed on the inner wall of the device box 3 is responsible for heating the heat transfer oil. When it is necessary to adjust the internal temperature of the monitoring box 1, the heating wire 12 starts to heat the heat transfer oil. As the temperature of the heat transfer oil rises, the servo motor 4 drives the two sets of gears 7 to rotate, and then the screw sleeve 10 injects the heated heat transfer oil into the temperature control cavity 6 through the connecting pipe 5 through the sliding of the piston 11, thereby realizing the regulation of the internal temperature of the monitoring box 1, ensuring that the physical properties of the gas remain stable after entering the monitoring box 1, and avoiding the influence of ambient temperature fluctuations on the component ratio of the gas.

[0026] When the gear 7 starts to rotate, the blades 14 push the gas inside the monitoring box 1 to ensure that the gas is fully mixed. At the same time, the heat transfer oil in the temperature control chamber 6 is in a flowing state, avoiding the problem of uneven local gas composition, making the gas sample in the monitoring box 1 more representative, and helping to improve monitoring accuracy.

[0027] After the gas temperature stabilizes and is fully mixed, the monitoring probe 15 installed at the bottom of the monitoring box 1 begins to analyze the gas composition. The probe continuously monitors the gas ratio by collecting chemical and physical property data of the gas.

[0028] 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.

Claims

1. A dynamic gas ratio monitoring device, comprising a monitoring box (1), characterized in that: The monitoring box (1) is provided with an air inlet pipe (2) on its outer wall, and is in communication with the interior of the monitoring box (1). A temperature control chamber (6) is provided in the monitoring box (1), and a spiral disk of the temperature control chamber (6) is provided in the monitoring box (1). A device box (3) is provided on the upper end of the monitoring box (1). Two groups of connecting pipes (5) are provided on the outer wall of the device box (3), and the ends of the two groups of connecting pipes (5) are in communication with the two ends of the temperature control chamber (6) respectively. Heat transfer oil is injected into the device box (3). A lead screw sleeve (10) and a piston (11) are slidably connected in the device box (3). The lead screw sleeve (10) is connected to the piston (11) through two groups of connecting rods (9). A driving mechanism for driving the lead screw sleeve (10) to slide is provided in the device box (3). An electric heating wire (12) is provided on the inner wall of the device box (3). A monitoring probe (15) is provided at the bottom of the monitoring box (1).

2. The dynamic gas ratio monitoring device according to claim 1, characterized in that: The driving mechanism comprises a reciprocating screw (8) rotatably connected to the bottom of the device box (3); the screw sleeve (10) is threadedly connected to the threaded section of the reciprocating screw (8); the inner wall of the device box (3) and the outer wall of the screw sleeve (10) are both arranged in a plane; the outer walls of both sides of the screw sleeve (10) are in contact with the inner wall of the device box (3).

3. The dynamic gas ratio monitoring device according to claim 2, characterized in that: The top of the monitoring box (1) is rotatably connected to a rotating rod (13), and the outer wall of the rotating rod (13) is provided with multiple groups of blades (14) at equal intervals, and the multiple groups of blades (14) are all inclined.

4. The dynamic gas ratio monitoring device according to claim 3, characterized in that: The end of the reciprocating screw (8) is fixedly connected to a limiting block, and the radius of the limiting block is larger than the radius of the reciprocating screw (8).

5. The dynamic gas ratio monitoring device according to claim 4, characterized in that: The upper end surface of the monitoring box (1) is rotatably connected to two sets of gears (7), the two sets of gears (7) are meshed with each other, and the two sets of gears (7) are coaxially fixedly connected to the reciprocating screw (8) and the rotating rod (13), respectively.

6. The dynamic gas ratio monitoring device according to claim 5, characterized in that: A servo motor (4) is fixedly connected to the upper end of the monitoring box (1), and the output shaft end of the servo motor (4) is coaxially fixedly connected to the adjacent gear (7).

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