Thermal conductive gas analysis device

Abstract

The utility model discloses a thermal conductivity gas analysis device which comprises a device main body, two connectors are arranged on the left side face of the device main body, the connectors are movably connected with rotary connection pipes, the rotary connection pipes are sleeved with rotary connection gaskets, the other ends of the rotary connection pipes are connected with a filtering cabin, a fixing frame is arranged in the filtering cabin, and the fixing frame is connected with a gas inlet pipe. A fixing frame is arranged on one side face of the filter bin, a filter layer is arranged in the fixing frame, a sealing cover is connected to the upper portion of the filter bin in a screwed mode, a sealing rubber ring is arranged on the sealing cover in a sleeving mode, and a screwed pipe is arranged on the other side face of the filter bin. The humidity of gas entering the device main body is reduced, impurities in the air are reduced, the accuracy of an analysis result is conveniently improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gas analysis devices, in particular to a thermal conductivity gas analysis device. Background Art

[0002] Thermal conductivity gas analyzer is an automatic continuous gas analyzer made by using the principle that the total thermal conductivity of mixed gas changes with the content of the measured component. It is usually used to analyze the content of hydrogen, ammonia, carbon dioxide, sulfur dioxide and low-concentration combustible gas. It can also be used as a detector in a chromatographic analyzer to analyze other components. It has a wide range of applications.

[0003] For example, a thermal conductivity hydrogen analysis device disclosed in the utility model with authorization announcement number CN218331336U includes a device body and a temperature control component. The temperature control component includes a thermometer, a positioning plate, a protection box, a fan, a shutter, a positive electrode sheet, a negative electrode sheet, a ceramic sheet and a plug. The device body is used for thermal conductivity analysis of hydrogen. The positioning plate has a mounting hole for mounting the device body. The protection box is used to protect the device body in the box. The thermometer is used to observe temperature changes. When the temperature in the box is too high, the fan is manually started to blow out the heat in the box through the shutter to form convection. When it is observed that the temperature in the protection box is too low, the power is turned on through the plug, and the positive electrode sheet and the negative electrode sheet are connected through the ceramic sheet. The ceramic piece will emit heat and increase the temperature in the protection box, which solves the problem that temperature changes in different environments will affect the fixed resistance in the Wheatstone bridge, which may easily lead to inaccurate analysis data. The device ensures the accuracy of the test results by heating and cooling the protection box. The device body itself is equipped with a thermal conductivity cell to compensate for the heat loss caused by the thermal conductivity of the sample gas, so that the internal temperature is constant. The device performs temperature adjustments in the opposite direction to the temperature of the protection box, which may increase the temperature changes of the sample gas, causing the analysis results to fluctuate too much, and the test results are inaccurate. In addition, the device cannot guarantee the purity and humidity of the gas, which may affect the analysis results and the service life of the device. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a thermal conductivity gas analysis device, which filters and dries the gas passing through the connector by designing a filter cabin, a fixing frame, and a filter layer, so that the humidity of the gas entering the inside of the device body is reduced and impurities in the air are reduced, which facilitates the device to improve the accuracy of the analysis results and extend the service life of the device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a thermal conductivity gas analysis device, comprising a device body, two connecting heads are arranged on the left side of the device body, a screw-on tube is movably connected to the connecting head, a screw-on gasket is sleeved on the screw-on tube, the other end of the screw-on tube is connected to a filter cabin, a fixing frame is arranged inside the filter cabin, a filter layer is arranged inside the fixing frame, a sealing cover is screwed on the upper part of the filter cabin, a sealing rubber ring is sleeved on the sealing cover, and a screw-on tube is arranged on the other side of the filter cabin.

[0006] As a preferred technical solution of the utility model, the screw-on tube is provided with threads, and the screw-on tube is screwed to the connector.

[0007] As a preferred technical solution of the utility model, two rotary tubes are arranged on one of the filter chambers and rotary gaskets are arranged on the rotary tubes.

[0008] As a preferred technical solution of the utility model, legs are arranged below the device body, and a handle is arranged on the top surface of the device body.

[0009] As a preferred technical solution of the utility model, a display screen is arranged on the front side of the device body, and heat dissipation holes are opened on the rear side wall of the device body.

[0010] As a preferred technical solution of the present utility model, a control panel is arranged on the right side wall of the device body, and a control knob for controlling the gas flow is arranged below the control panel.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] By designing a filter cabin, a fixing frame, and a filter layer, the gas passing through the connector is filtered and dried, so that the humidity of the gas entering the main body of the device is reduced, and impurities in the air are reduced, which helps the device improve the accuracy of the analysis results and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the main view structure of the utility model;

[0015] Figure 3 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0016] Figure 4 It is a schematic diagram of the side view structure of the utility model;

[0017] Among them: 1. Device body; 2. Display screen; 3. Control panel; 4. Control knob; 5. Carrying handle; 6. Leg; 7. Heat dissipation hole; 8. Connector; 9. Screw-on tube; 10. Screw-on gasket; 11. Sealing cover; 12. Filter layer; 13. Filter cabin; 14. Fixing frame; 15. Sealing rubber ring. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0019] Example

[0020] Please refer to Figure 1 - Figure 4 As shown, the utility model provides a thermal conductivity gas analysis device, including a device body 1, a support leg 6 is arranged below the device body 1, a handle 5 is arranged on the top surface of the device body 1, and the device is convenient to carry, a display screen 2 is arranged on the front side of the device body 1, and analysis data and results are displayed, a heat dissipation hole 7 is opened on the rear side wall of the device body 1, and a control panel 3 is arranged on the right side wall of the device body 1, which is used to control the heating and temperature control of the device, etc., and a control knob 4 for controlling the gas flow is arranged below the control panel 3;

[0021] Before the gas is introduced, first use the handle 5 to place the device in a suitable position, so that the legs 6 are in stable contact with the work surface, heat the thermal conductivity cell through the control panel 3 to keep its temperature constant, observe the data displayed on the display screen 2, and make targeted adjustments;

[0022] like Figure 1 - Figure 4 As shown, two connectors 8 are provided on the left side of the device body 1, and a screw tube 9 is movably connected to the connector 8, and a screw-on gasket 10 is sleeved on the screw-on tube 9. A filter cabin 13 is connected to the other end of the screw-on tube 9, and a fixing frame 14 is provided inside the filter cabin 13. The fixing frame 14 is a hollow frame as a whole, and holes are left for gas to pass through. A filter layer 12 is provided in the fixing frame 14, and the filter layer 12 can further adsorb and filter impurities in the gas. A sealing cover 11 is screwed on the upper part of the filter cabin 13, and a sealing rubber ring 15 is sleeved on the sealing cover 11 to ensure the sealing effect of the device. A screw-on tube 9 is provided on the other side of the filter cabin 13, and a thread is opened on the screw-on tube 9. The screw-on tube 9 is screwed with the connector 8, and two screw-on tubes 9 are provided on one filter cabin 13, and screw-on gaskets 10 are provided on the screw-on tubes 9.

[0023] When connecting the device, the carrying handle 5 is used to place the device in a suitable position, so that the legs 6 are stably in contact with the work surface, the sealing cover 11 is twisted to separate the sealing cover 11 from the filter cabin 13, the filter layer 12 is placed in the fixing frame 14, and the sealing cover 11 is twisted again to seal the filter cabin 13. At this time, the sealing rubber ring 15 is between the sealing cover 11 and the upper surface of the filter cabin 13 to seal the connection gap between the two, and then the rotary tube 9 is connected to the connector 8, and the other rotary tube 9 is connected to the gas output pipe. The gas enters the filter cabin 13 through the rotary tube 9, is filtered by the filter layer 12, and impurities and moisture are left. The filtered gas passes through the inside of the device body 1 through the other rotary tube 9;

[0024] Specific working principle:

[0025] When using the device, the carrying handle 5 is used to place the device in a suitable position so that the supporting legs 6 are in stable contact with the work surface, the sealing cover 11 is twisted to separate the sealing cover 11 from the filter cabin 13, the filter layer 12 is placed in the fixing frame 14, and the sealing cover 11 is twisted again to seal the filter cabin 13. At this time, the sealing rubber ring 15 is between the sealing cover 11 and the upper surface of the filter cabin 13 to seal the connection gap between the two, and then the rotary tube 9 is connected to the connector 8, and the other rotary tube 9 is connected to the gas output pipe. At this time, do not output gas. Heat the thermal conductivity cell through the control panel 3 to make its temperature constant, observe the data displayed on the display screen 2, make targeted adjustments, and control the gas output after the adjustment is stable. The gas enters the filter cabin 13 through the rotary tube 9, is filtered through the filter layer 12, and impurities and moisture are left. The filtered gas passes through the inside of the device body 1 through the other rotary tube 9.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A thermal conductivity gas analysis device, comprising a device body (1), characterized in that: The left side of the device body (1) is provided with two connectors (8), the connectors (8) are movably connected with a screw-on tube (9), the screw-on tube (9) is sleeved with a screw-on gasket (10), the other end of the screw-on tube (9) is connected with a filter chamber (13), a fixing frame (14) is arranged inside the filter chamber (13), a filter layer (12) is arranged inside the fixing frame (14), a sealing cover (11) is screwed on the upper part of the filter chamber (13), a sealing rubber ring (15) is sleeved on the sealing cover (11), and a screw-on tube (9) is arranged on the other side of the filter chamber (13).

2. A thermal conductivity gas analysis device according to claim 1, characterized in that: The screw-on tube (9) is provided with a thread, and the screw-on tube (9) is screwed to the connector (8).

3. A thermal conductivity gas analysis device according to claim 1, characterized in that: One of the filter chambers (13) is provided with two screw-on tubes (9), and both screw-on tubes (9) are provided with screw-on gaskets (10).

4. A thermal conductivity gas analysis device according to claim 1, characterized in that: A supporting leg (6) is provided below the device body (1), and a handle (5) is provided on the top surface of the device body (1).

5. A thermal conductivity gas analysis device according to claim 1, characterized in that: A display screen (2) is provided on the front side of the device body (1), and a heat dissipation hole (7) is provided on the rear side wall of the device body (1).

6. A thermal conductivity gas analysis device according to claim 1, characterized in that: A control panel (3) is arranged on the right side wall of the device body (1), and a control knob (4) for controlling the gas flow is arranged below the control panel (3).

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