A preconcentrator for gas analysis

Abstract

The application provides a pre-concentrator for gas analysis, and relates to the technical field of gas analysis. The pre-concentrator for gas analysis comprises a concentrator main body, a concentration mechanism for concentrating gas is arranged in the concentrator main body, an adjusting mechanism for adjusting various data of the device is arranged in the concentrator main body, the concentration mechanism comprises a connecting plate and a concentration column, the connecting plate is fixedly installed on the lower surface of the concentrator main body through bolts, and the concentration column is installed in the concentrator main body. The pre-concentrator for gas analysis is provided with the concentration mechanism, and the problem that the pre-concentrator for gas analysis in the prior art is difficult to realize targeted concentration of different types of gas and has poor universality when pre-concentrating the to-be-tested gas in actual use is solved, targeted adsorption and concentration of different types of gas are realized, the universality of the pre-concentrator is improved, and the beneficial effect that different gas analysis requirements can be met is achieved.

Description

Technical Field

[0001] This application relates to the field of gas analysis technology, specifically to a gas analysis pre-concentrator. Background Technology

[0002] Gas analysis refers to the process and techniques for qualitatively and quantitatively determining the composition and content of gas mixtures. Qualitatively, it primarily involves identifying the gaseous components present in the mixture. This can be achieved through specific chemical reactions, spectral characteristics, and other methods to distinguish the types of gases. For instance, infrared spectroscopy can identify gas molecules containing specific functional groups, thereby determining the gas composition.

[0003] The function of a pre-concentrator is to concentrate and enrich the target components in the gas to be analyzed, increasing their concentration so that subsequent analytical instruments can accurately detect them. However, existing gas analysis pre-concentrators, in practical use, struggle to achieve targeted concentration for different types of gases, exhibiting poor versatility. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this application provides a pre-concentrator for gas analysis, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this application provides the following technical solution: a pre-concentrator for gas analysis, comprising a concentrator body, wherein a concentrator mechanism for concentrating gas is provided inside the concentrator body, and an adjustment mechanism for adjusting various data of the device is provided inside the concentrator body. The concentrator mechanism includes a connecting plate and a concentrator column. The connecting plate is fixedly installed on the lower surface of the concentrator body by bolts, and the concentrator column is installed inside the concentrator body.

[0008] By adopting the above technical solution, the concentration mechanism can specifically adsorb and concentrate different types of gases, improving the versatility of the pre-concentrator and meeting the needs of different gas analyses. The adjustment mechanism ensures stable pressure within the gas pre-concentration chamber, preventing excessively high or low pressure from affecting the pre-concentration process and analytical results.

[0009] Preferably, an air inlet is provided on the upper surface of the concentrator body, a diverter pipe is fixedly installed at the top of the inner wall of the concentrator body and connected to the air inlet, and a support column is fixedly installed at the bottom of the inner wall of the concentrator body.

[0010] By adopting the above technical solution, the incoming gas to be tested can be evenly distributed into each concentration column through the splitter tube.

[0011] Preferably, a gas pre-concentration chamber is fixedly installed at one end of the support column, one end of the diversion pipe is fixedly connected to one end of the gas pre-concentration chamber, and a sealing block is slidably connected to the inner wall surface of the gas pre-concentration chamber.

[0012] By adopting the above technical solution, the gas pre-concentration chamber can be sealed with a sealing block to prevent gas leakage.

[0013] Preferably, the concentration column is fixedly installed at one end of the sealing block, and a connecting column is fixedly installed at the other end of the sealing block, and the connecting column is fixedly installed on the upper surface of the connecting plate.

[0014] By adopting the above technical solution, the connecting plate can be used to limit the position of the connecting column, thereby limiting the position of the concentration column.

[0015] Preferably, a heater is fixedly installed on the surface of the gas pre-concentration chamber, a cooler is fixedly installed on the surface of the gas pre-concentration chamber, and a temperature sensor is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber.

[0016] By adopting the above technical solution, the temperature of the gas pre-concentration chamber can be adjusted by using a heater and a cooler, thereby adjusting the temperature of the gas inside the chamber.

[0017] Preferably, a pressure sensor is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber, a first electrically controlled valve is fixedly installed on the surface of the diversion pipe, an exhaust pipe is fixedly installed on the lower surface of the gas pre-concentration chamber, and a second electrically controlled valve is fixedly installed on the surface of the exhaust pipe.

[0018] By adopting the above technical solution, the flow rate of gas entering and exiting the device can be adjusted by using the No. 1 and No. 2 electric control valves.

[0019] (III) Beneficial Effects

[0020] This application provides a pre-concentrator for gas analysis. It has the following advantages:

[0021] 1. This gas analysis pre-concentrator, by incorporating a concentration mechanism, solves the problem of previous gas analysis pre-concentrators being unable to achieve targeted concentration of different types of gases and having poor versatility in practical use. It enables targeted adsorption and concentration of different types of gases, improving the versatility of the pre-concentrator and meeting the beneficial effects of different gas analysis needs.

[0022] 2. This gas analysis pre-concentrator is equipped with an adjustment mechanism. Through the coordinated use of a heater, a cooler, a temperature sensor, a pressure sensor, a first-stage solenoid valve, an exhaust pipe, and a second-stage solenoid valve, the device can regulate the internal temperature, pressure, and gas flow rate. This ensures stable pressure within the gas pre-concentration chamber and prevents excessively high or low pressure from affecting the pre-concentration process and analysis results. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the main appearance structure of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the concentrator in this application;

[0026] Figure 3 This is a schematic diagram of the internal structure of the gas pre-concentration chamber in this application;

[0027] Figure 4 This is a schematic diagram of the sealing block and its connection structure in this application.

[0028] In the diagram: 1. Concentrator body; 2. Concentration mechanism; 201. Air inlet; 202. Diverter pipe; 203. Support column; 204. Gas pre-concentration chamber; 205. Sealing block; 206. Concentration column; 207. Connecting column; 208. Connecting plate; 3. Adjustment mechanism; 301. Heater; 302. Refrigerator; 303. Temperature sensor; 304. Pressure sensor; 305. No. 1 solenoid valve; 306. Exhaust pipe; 307. No. 2 solenoid valve. Detailed Implementation

[0029] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Reference Figure 1 and Figure 2 This application provides a gas pre-concentrator for analysis, including a concentrator body 1. The concentrator body 1 contains a concentrator mechanism 2 for concentrating gases, and an adjustment mechanism 3 for adjusting various data points. The concentrator mechanism 2 includes a connecting plate 208 and a concentration column 206. The connecting plate 208 is bolted to the lower surface of the concentrator body 1, and the concentration column 206 is installed inside the concentrator body 1. The concentrator mechanism 2 can evenly distribute the gas into the concentration columns 206 of each gas pre-concentration chamber 204 via a distribution pipe 202. Within the gas pre-concentration chamber 204, different types of gases are selectively adsorbed and concentrated based on the characteristics of the adsorbents in different concentration columns 206. By unscrewing the bolts on the lower surface of the connecting plate 208 and pulling the connecting plate 208, the connecting plate 208 and the concentration column 206 can be removed from the device for replacement. The temperature inside the gas pre-concentration chamber 204 is monitored in real time by the temperature sensor 303 via the regulating mechanism 3, and then adjusted by the heater 301 or the cooler 302 to optimize the adsorption and desorption process. The pressure sensor 304 monitors the pressure changes inside the gas pre-concentration chamber 204 in real time. When the pressure is abnormal, the control system adjusts the inlet and outlet gas flow rates via the first solenoid valve 305 and the second solenoid valve 307. The pre-concentrated gas flows out from the exhaust pipe 306, and the outflow rate is adjusted by the second solenoid valve 307 to meet the requirements of subsequent analytical instruments.

[0032] Reference Figure 2 and Figure 4In one aspect of this embodiment, an air inlet 201 is provided on the upper surface of the concentrator body 1, a diverter pipe 202 is fixedly installed on the top of the inner wall of the concentrator body 1, the diverter pipe 202 is connected to the air inlet 201, and a support column 203 is fixedly installed on the bottom of the inner wall of the concentrator body 1.

[0033] A gas pre-concentration chamber 204 is fixedly installed at one end of the support column 203, and one end of the diversion pipe 202 is fixedly connected to one end of the gas pre-concentration chamber 204. A sealing block 205 is slidably connected to the inner wall surface of the gas pre-concentration chamber 204.

[0034] A concentration column 206 is fixedly installed at one end of a sealing block 205, and a connecting column 207 is fixedly installed at the other end of the sealing block 205. The connecting column 207 is fixedly installed on the upper surface of a connecting plate 208. When the gas to be tested enters the pre-concentrator body 1 from the inlet 201, it is evenly distributed to the concentration columns 206 in each gas pre-concentration chamber 204 through the distribution pipe 202. In the gas pre-concentration chamber 204, different types of gases are selectively adsorbed and concentrated according to the characteristics of the adsorbent in different concentration columns 206. After unscrewing the bolts on the lower surface of the connecting plate 208, the connecting plate 208 and the concentration column 206 can be removed from the device for replacement by pulling the connecting plate 208.

[0035] Reference Figure 2 and Figure 3 In one aspect of this embodiment, a heater 301 is fixedly installed on the surface of the gas pre-concentration chamber 204, a cooler 302 is fixedly installed on the surface of the gas pre-concentration chamber 204, and a temperature sensor 303 is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber 204.

[0036] A pressure sensor 304 is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber 204. A first-order solenoid valve 305 is fixedly installed on the surface of the diversion pipe 202. An exhaust pipe 306 is fixedly installed on the lower surface of the gas pre-concentration chamber 204, and a second-order solenoid valve 307 is fixedly installed on the surface of the exhaust pipe 306. The temperature inside the gas pre-concentration chamber 204 is monitored in real time by a temperature sensor 303, and the temperature is adjusted by a heater 301 or a cooler 302 to optimize the adsorption and desorption process. The pressure sensor 304 monitors the pressure changes inside the gas pre-concentration chamber 204 in real time. When the pressure is abnormal, the control system adjusts the inlet and outlet gas flow rates through the first-order solenoid valve 305 and the second-order solenoid valve 307. The pre-concentrated gas flows out from the exhaust pipe 306, and the outflow rate is adjusted by the second-order solenoid valve 307 to meet the requirements of subsequent analytical instruments.

[0037] All electrical devices in this plan are powered by an external power source.

[0038] Working Principle: When the gas to be tested enters the pre-concentrator body 1 through the inlet 201, it is evenly distributed into the concentration columns 206 of each gas pre-concentration chamber 204 via the distributor 202. Within the gas pre-concentration chambers 204, different types of gases are selectively adsorbed and concentrated based on the characteristics of the adsorbents in different concentration columns 206. The temperature sensor 303 monitors the temperature within the gas pre-concentration chambers 204 in real time and adjusts the temperature via the heater 301 or cooler 302 to optimize the adsorption and desorption process. The pressure sensor 304 monitors the pressure changes within the gas pre-concentration chambers 204 in real time. When the pressure is abnormal, the control system adjusts the inlet and outlet flow rates via the first and second solenoid valves 305 and 307. The pre-concentrated gas flows out through the exhaust pipe 306, and the outflow rate is adjusted by the second solenoid valve 307 to meet the requirements of subsequent analytical instruments. After the device is used, unscrew the bolts on the lower surface of the connecting plate 208 and pull the connecting plate 208 to remove the connecting plate 208 and the concentration column 206 from the device for replacement.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas analysis pre-concentrator, comprising a concentrator body (1), characterized in that: The concentrator body (1) is provided with a concentrating mechanism (2) for concentrating gas. The concentrator body (1) is also provided with an adjusting mechanism (3) for adjusting various data of the device. The concentrating mechanism (2) includes a connecting plate (208) and a concentrating column (206). The connecting plate (208) is fixedly installed on the lower surface of the concentrator body (1) by bolts, and the concentrating column (206) is installed inside the concentrator body (1).

2. The gas analysis pre-concentrator according to claim 1, characterized in that: An air inlet (201) is provided on the upper surface of the concentrator body (1). A diverter pipe (202) is fixedly installed on the top of the inner wall of the concentrator body (1). The diverter pipe (202) is connected to the air inlet (201). A support column (203) is fixedly installed on the bottom of the inner wall of the concentrator body (1).

3. A gas analysis pre-concentrator according to claim 2, characterized in that: A gas pre-concentration chamber (204) is fixedly installed at one end of the support column (203), and one end of the diversion pipe (202) is fixedly connected to one end of the gas pre-concentration chamber (204). A sealing block (205) is slidably connected to the inner wall surface of the gas pre-concentration chamber (204).

4. A gas analysis pre-concentrator according to claim 3, characterized in that: The concentration column (206) is fixedly installed at one end of the sealing block (205), and a connecting column (207) is fixedly installed at the other end of the sealing block (205). The connecting column (207) is fixedly installed on the upper surface of the connecting plate (208).

5. A gas analysis pre-concentrator according to claim 3, characterized in that: A heater (301) is fixedly installed on the surface of the gas pre-concentration chamber (204), a cooler (302) is fixedly installed on the surface of the gas pre-concentration chamber (204), and a temperature sensor (303) is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber (204).

6. A gas analysis pre-concentrator according to claim 5, characterized in that: A pressure sensor (304) is fixedly installed at the bottom of the inner wall of the gas pre-concentration chamber (204). A first-level electric control valve (305) is fixedly installed on the surface of the diversion pipe (202). An exhaust pipe (306) is fixedly installed on the lower surface of the gas pre-concentration chamber (204). A second-level electric control valve (307) is fixedly installed on the surface of the exhaust pipe (306).

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