Constant-proportion proportioning system

Abstract

The utility model discloses a constant-proportion proportioning system which comprises a sample pipeline used for inputting a sample; the control valve is communicated with the sample pipeline and is used for controlling the on-off of the sample pipeline; the air pipeline is used for inputting air; the gas amplifier is communicated with the air pipeline, is connected with the sample pipeline and is used for receiving the pressure of the sample pipeline; the heat exchange module is connected with the sample pipeline and the air pipeline and is used for carrying out heat exchange on samples and air conveyed by the sample pipeline and the air pipeline; and the flow limiting module is connected with the heat exchange module and used for mixing and outputting the sample and the air subjected to heat exchange according to a preset proportion. According to the utility model, the gas amplifier is arranged to realize the stability of the pressure, the heat exchange module is arranged to realize the heat exchange between air and a sample and ensure the constancy of the temperature, and finally, the proportioning switching of different proportions is realized by controlling the sizes of the first flow limiting hole and the second flow limiting hole.

Description

Technical Field

[0001] The utility model relates to the proportioning before sample analysis and detection, and particularly relates to a constant proportioning system. Background Art

[0002] Before analyzing the mixture of a sample and air using an analyzer, it is necessary to mix the sample and air in equal proportions. However, the existing sample injection proportioning system does not use a gas amplifier and cannot be adjusted in a timely manner due to changes in the sample pressure, resulting in unstable pressure and an inability to produce a constant proportion of the sample and air. Summary of the Invention

[0003] According to an embodiment of the utility model, a constant proportioning system is provided, comprising:

[0004] A sample pipeline for inputting a sample;

[0005] A control valve, which is communicated with the sample pipeline to control the on-off of the sample pipeline;

[0006] An air pipeline for inputting air;

[0007] A gas amplifier, which is communicated with the air pipeline and connected to the sample pipeline to receive the pressure of the sample pipeline;

[0008] A heat exchange module, which is connected to the sample pipeline and the air pipeline to exchange heat for the sample and air conveyed by the sample pipeline and the air pipeline;

[0009] A flow limiting module, which is connected to the heat exchange module to mix and output the heat-exchanged sample and air in a preset proportion.

[0010] Further, the heat exchange module comprises: a heat exchanger, which is internally provided with a heat exchange cavity and a heat exchange tube. One end of the heat exchange cavity is communicated with the air pipeline, one end of the heat exchange tube is connected to the sample pipeline, and the other ends of the heat exchange cavity and the heat exchange tube are connected to the flow limiting module.

[0011] Further, the heat exchange tube is a spiral tube.

[0012] Further, the flow limiting module comprises:

[0013] A first flow limiting tube, one end of which is connected to the other end of the heat exchange cavity, and the inside of the first flow limiting tube is provided with a first flow limiting hole;

[0014] A second flow limiting tube, one end of which is connected to the other end of the heat exchange tube, and the inside of the second flow limiting tube is provided with a second flow limiting hole;

[0015] A discharge pipeline, which is connected to the other ends of the first flow limiting tube and the second flow limiting tube.

[0016] Further, it further includes: a ball valve, which is connected to the sample pipeline and controls the on-off of the sample pipeline.

[0017] Further, it further includes: a filter, which is connected to the sample pipeline and filters the sample conveyed in the sample pipeline.

[0018] Further, pressure reducing valves are provided on both the sample pipeline and the air pipeline.

[0019] According to a constant ratio mixing system of an embodiment of the present invention, the stability of pressure can be achieved by providing a gas amplifier, and it has a heat exchange module to realize the heat exchange between air and the sample to ensure the constancy of temperature. Finally, by controlling the sizes of the first flow limiting orifice and the second flow limiting orifice, the switching of different ratios of mixing is realized.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic diagram of the overall structure of a constant ratio mixing system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the drawings, and the present invention will be further elaborated.

[0023] First, in combination with Figure 1 A constant ratio mixing system according to an embodiment of the present invention is described, which is used for equal ratio mixing of a sample and air, and has a wide range of application scenarios.

[0024] As Figure 1 shown, a constant ratio mixing system according to an embodiment of the present invention has a sample pipeline 1, a control valve 2, an air pipeline 3, a gas amplifier 4, a heat exchange module, and a flow limiting module.

[0025] Specifically, as Figure 1 shown, the sample pipeline 1 is used for input of the sample; the control valve 2 is connected to the sample pipeline 1 to control the on-off of the sample pipeline 1; the air pipeline 3 is used for input of air; the gas amplifier 4 is connected to the air pipeline 3 and is connected to the sample pipeline 1, receives the pressure of the sample pipeline 1, and ensures that the pressures of the sample and air in the air pipeline 3 and the sample pipeline 1 are consistent.

[0026] Specifically, as Figure 1As shown in the figure, the heat exchange module is connected to the sample pipeline 1 and the air pipeline 3, and is used to exchange heat between the sample and air transported by the sample pipeline 1 and the air pipeline 3 to ensure that the temperatures of the sample and air are the same. The heat exchange module includes: a heat exchanger 51, inside which there is a heat exchange chamber 511 and heat exchange tubes 512. One end of the heat exchange chamber 511 is connected to the air pipeline 3, one end of the heat exchange tubes 512 is connected to the sample pipeline 1, and the other ends of the heat exchange chamber 511 and the heat exchange tubes 512 are connected to the flow limiting module. The heat exchange tubes 512 are spiral tubes to improve the heat exchange effect. During heat exchange, the air in the heat exchange chamber 511 exchanges heat with the sample in the heat exchange tubes 512.

[0027] Specifically, as Figure 1 shown in the figure, the flow limiting module is connected to the heat exchange module and is used to mix and output the heat-exchanged sample and air in a preset ratio. The flow limiting module includes: a first flow limiting tube 61, a second flow limiting tube 62, and a discharge pipeline 63. One end of the first flow limiting tube 61 is connected to the other end of the heat exchange chamber 511, and inside the first flow limiting tube 61 there is a first flow limiting hole 611; one end of the second flow limiting tube 62 is connected to the other end of the heat exchange tube 512, and inside the second flow limiting tube 62 there is a second flow limiting hole 621; the discharge pipeline 63 is connected to the other ends of the first flow limiting tube 61 and the second flow limiting tube 62. By adjusting the first flow limiting hole 611 and the second flow limiting hole 621, the air and the sample are proportioned in a preset ratio to meet the actual requirements.

[0028] Furthermore, as Figure 1 shown in the figure, a constant ratio proportioning system according to an embodiment of the present invention further includes: a ball valve 7, which is connected to the sample pipeline 1 to control the on-off of the sample pipeline 1.

[0029] Furthermore, as Figure 1 shown in the figure, a constant ratio proportioning system according to an embodiment of the present invention further includes: a filter 8, which is connected to the sample pipeline 1 to filter the sample transported in the sample pipeline 1.

[0030] Furthermore, as Figure 1 shown in the figure, pressure reducing valves 9 are provided on both the sample pipeline 1 and the air pipeline 3 for pressure reduction.

[0031] Working principle: During use, the sample is input into the heat exchange tubes 512 through the sample pipeline 1, and the air is transported into the heat exchange chamber 511 through the gas amplifier 4 to achieve heat exchange between the sample and the air. Finally, they are proportioned in a preset ratio through the first flow limiting hole 611 and the second flow limiting hole 621 in the first flow limiting tube 61 and the second flow limiting tube 62, and are discharged through the discharge pipeline 63.

[0032] Above, with reference to Figure 1A constant ratio mixing system according to an embodiment of the present utility model is described. By providing a gas amplifier 4, stable pressure can be achieved, and a heat exchange module is provided to realize heat exchange between air and the sample to ensure constant temperature. Finally, by controlling the sizes of the first flow limiting orifice 611 and the second flow limiting orifice 621, ratio switching of different ratios can be achieved.

[0033] It should be noted that in this specification, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0034] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and alternatives to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. A constant ratio proportioning system, characterized in that: Include: A sample pipeline, used for inputting samples; A control valve, the control valve is connected to the sample pipeline to control the on-off of the sample pipeline; Air duct, used for air input; A gas amplifier, the gas amplifier is in communication with the air pipeline and connected to the sample pipeline, and receives the pressure of the sample pipeline; A heat exchange module, the heat exchange module is connected to the sample pipeline and the air pipeline, and is used for exchanging heat between the sample pipeline and the air transported by the air pipeline; A current limiting module is connected to the heat exchange module and is used to mix and output the sample and the air after heat exchange in a preset ratio.

2. The constant ratio mixing system according to claim 1, characterized in that: The heat exchange module includes: a heat exchanger, wherein a heat exchange chamber and a heat exchange tube are arranged inside the heat exchanger, one end of the heat exchange chamber is connected to the air duct, one end of the heat exchange tube is connected to the sample duct, and the other end of the heat exchange chamber and the heat exchange tube is connected to the current limiting module.

3. The constant ratio mixing system as claimed in claim 2, characterized in that: The heat exchange tube is a spiral tube.

4. The constant ratio mixing system as claimed in claim 2, characterized in that: The current limiting module comprises: a first flow limiting tube, one end of which is connected to the other end of the heat exchange chamber, and a first flow limiting hole is provided inside the first flow limiting tube; a second flow limiting tube, one end of which is connected to the other end of the heat exchange tube, and a second flow limiting hole is provided inside the second flow limiting tube; A discharge pipe is connected to the other ends of the first flow limiting pipe and the second flow limiting pipe.

5. The constant ratio mixing system according to claim 1, characterized in that: It also includes a ball valve, which is connected to the sample pipeline to control the on-off of the sample pipeline.

6. The constant ratio mixing system according to claim 1, characterized in that: It also includes: a filter, which is connected to the sample pipeline and filters the sample transported in the sample pipeline.

7. The constant ratio mixing system according to claim 1, characterized in that: The sample pipeline and the air pipeline are both provided with pressure reducing valves.

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