Gasoline hydrocarbon gas chromatograph sampling device

Abstract

The utility model relates to the technical field of gasoline detection, in particular to a sampling device of a gasoline hydrocarbon gas chromatograph, which is characterized in that an isolation groove is arranged inside a sampling box body, a heating device is arranged outside the isolation groove, a top cover is arranged at the top of the sampling box body, a sampling pipe communicated with the inside of the isolation groove is arranged on the top cover, and a cleaning device is further arranged above the isolation groove. And a discharge pipe and a feed pipe are respectively communicated with the front end and the rear end of the sample injection box body. The gasoline heating device disclosed by the utility model has the beneficial effects that the gasoline heating device can be used for safely heating gasoline, so that volatile components of the gasoline are extracted and enter a chromatographic instrument for analysis.

Description

Technical Field

[0001] The utility model relates to the technical field of gasoline detection, in particular to a gasoline hydrocarbon gas chromatograph sampling device. Background Art

[0002] As one of the important methods of modern instrumental analysis, gas chromatography has the characteristics of high efficiency and rapid separation, and has become an indispensable tool for industrial analysis. "Rapid gas chromatography analysis" refers to the experimental process of completing gas chromatography analysis in a relatively short time on conventional instruments and equipment and under normal experimental operating conditions.

[0003] To this end, the present application designs a gasoline hydrocarbon gas chromatograph sampling device, which can quickly and safely produce samples that need to be analyzed by gas chromatography. Utility Model Content

[0004] In order to make up for the deficiencies in the prior art, the utility model provides a gasoline hydrocarbon gas chromatograph sampling device.

[0005] A gasoline hydrocarbon gas chromatograph sampling device comprises a sampling box, characterized in that:

[0006] An isolation groove is arranged inside the sample injection box, a heating device is arranged outside the isolation groove, a top cover is arranged on the top of the sample injection box, a sampling tube connected to the inside of the isolation groove is arranged on the top cover, a cleaning device is also arranged above the isolation groove, and a discharge pipe and a feed pipe are connected to the front and rear ends of the sample injection box respectively.

[0007] Furthermore, in order to better implement the utility model, the space between the sample inlet box and the isolation tank is a water jacket, hot water flows in the water jacket, and an inlet pipe for the hot water to enter and a return pipe for the water to be discharged are connected above the water jacket.

[0008] Furthermore, in order to better realize the utility model, the bottom of the isolation tank is a sloping bottom that tilts forward, so as to facilitate the discharge of internal sewage after cleaning.

[0009] Furthermore, in order to better implement the utility model, a sealing ring is provided at the connection position between the sample inlet box and the top cover to prevent the hot water in the water jacket from leaking.

[0010] Furthermore, in order to better realize the utility model, the space between the isolation groove and the top cover is used as a volatilization chamber, the top cover above the volatilization chamber is connected to a sampling tube, and a nozzle is also provided under the top cover, and the nozzle is connected to a cleaning pipe of an external high-pressure water circuit.

[0011] Furthermore, in order to better implement the present invention, all pipelines communicating with the top cover and the sample injection box are provided with valves.

[0012] The beneficial effects of the utility model are:

[0013] The device of the utility model can heat gasoline safely, so that the volatile components of gasoline can be extracted and entered into the chromatograph for analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model after removing the top cover;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the top cover of the utility model.

[0018] In the figure,

[0019] 1. Sampling box, 2. Top cover, 3. Isolation tank, 101. Water jacket, 102. Discharge pipe, 103. Feed pipe, 104. Sealing ring, 201. Sampling tube, 202. Cleaning tube, 203. Water inlet pipe, 204. Water return pipe, 205. Nozzle, 301. Volatilization chamber, 302. Sloped bottom. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] Figure 1-Figure 4 The utility model is a gasoline hydrocarbon gas chromatograph sampling device, an isolation slot 3 is provided inside the sampling box 1, a heating device is provided outside the isolation slot 3, a top cover 2 is provided on the top of the sampling box 1, a sampling tube 201 connected to the inside of the isolation slot 3 is provided on the top cover 2, a cleaning device is also provided above the isolation slot 3, and a discharge pipe 102 and a feed pipe 103 are respectively connected to the front and rear ends of the sampling box 1.

[0023] The space between the sample feeding box 1 and the isolation tank 3 is a water jacket 101, in which hot water flows, and above the water jacket 101, there are connected a water inlet pipe 203 for hot water and a water return pipe 204 for discharging water. The bottom of the isolation tank 3 is a slanted bottom 302 that tilts forward, which is convenient for discharging internal sewage after cleaning. A sealing ring 104 is provided at the connection position between the sample feeding box 1 and the top cover 2 to prevent the hot water in the water jacket 101 from leaking. The space between the isolation tank 3 and the top cover 2 is used as a volatilization chamber 301, and the top cover 2 above the volatilization chamber 301 is connected to a sampling tube 201, and a nozzle 205 is also provided below the top cover 2, and the nozzle 205 is connected to a cleaning pipe 202 of an external high-pressure waterway. All pipes connected to the top cover 2 and the sample feeding box 1 are provided with valves.

[0024] The specific usage method of this embodiment is as follows:

[0025] Gasoline is fed into the volatilization chamber 301 from the feed pipe 103. After being heated by the flowing hot water, the volatile components in the gasoline are volatilized and equilibrium is reached in the gas-liquid two-phase. The upper gas is extracted from the sampling tube 201 for chromatographic analysis.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A gasoline hydrocarbon gas chromatograph sampling device, comprising a sampling box (1), characterized in that: The sample injection box (1) is provided with an isolation groove (3) inside, a heating device is provided outside the isolation groove (3), a top cover (2) is provided on the top of the sample injection box (1), a sampling tube (201) connected to the inside of the isolation groove (3) is provided on the top cover (2), a cleaning device is also provided above the isolation groove (3), and a discharge pipe (102) and a feed pipe (103) are respectively connected at the front and rear ends of the sample injection box (1).

2. The gasoline hydrocarbon gas chromatograph sampling device according to claim 1, characterized in that: The space between the sample inlet box (1) and the isolation tank (3) is a water jacket (101), hot water flows in the water jacket (101), and a water inlet pipe (203) for hot water to enter and a water return pipe (204) for discharging water are connected above the water jacket (101).

3. The gasoline hydrocarbon gas chromatograph sampling device according to claim 1, characterized in that: The bottom of the isolation tank (3) is a sloping bottom (302) that tilts forward, so as to facilitate the discharge of internal sewage after cleaning.

4. The gasoline hydrocarbon gas chromatograph sampling device according to claim 1, characterized in that: A sealing ring (104) is provided at the connection position between the sample inlet box (1) and the top cover (2) to prevent the hot water in the water jacket (101) from leaking.

5. The gasoline hydrocarbon gas chromatograph sampling device according to claim 1, characterized in that: The space between the isolation groove (3) and the top cover (2) serves as a volatilization chamber (301); the top cover (2) above the volatilization chamber (301) is connected to a sampling tube (201); a nozzle (205) is further provided below the top cover (2); the nozzle (205) is connected to a cleaning tube (202) of an external high-pressure water circuit.

6. The gasoline hydrocarbon gas chromatograph sampling device according to claim 1, characterized in that: All pipelines connecting the top cover (2) and the sample injection box (1) are provided with valves.

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