Optical flow cell for analyzing liquefied petroleum gas

Abstract

The utility model discloses an optical flow cell for liquefied petroleum gas analysis, which comprises a connecting plate, a shell is fixedly mounted on one side of the connecting plate, a quartz tube is fixedly mounted in the shell, windows are symmetrically arranged on the front side and the rear side of the quartz tube on the shell, and connecting covers are fixedly mounted at the two ends of the quartz tube on the shell through bolts. Connectors are in threaded connection with the connecting covers, an input pipe is inserted into the lower connector, an output pipe is inserted into the upper connector, openings matched with the input pipe and the output pipe are formed in the shell, the connecting covers are detached by detaching bolts on the connecting covers at the two ends, and the two ends of the quartz tube are opened; the inner wall of the quartz tube, the connecting cover and the connector can be cleaned conveniently, the optical flow cell can be cleaned conveniently, the connector and the ends of the input tube and the output tube connected with the connector are covered with the protective shell, the protective shell is clamped in the clamping groove, the installation stability of the protective shell is improved, the connector is protected, and meanwhile the attractiveness of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical flow cells, in particular to an optical flow cell for liquefied petroleum gas analysis. Background Art

[0002] Liquefied petroleum gas is one of the petroleum products. It is a colorless, volatile gas obtained by pressurizing, cooling and liquefying refinery gas or natural gas. The main components of liquefied petroleum gas obtained from refinery gas are propane, propylene, butane and butene, and it also contains a small amount of pentane and pentene. The current national standards and industry standards use gas chromatography to analyze the hydrocarbon composition and dimethyl ether content of liquefied petroleum gas. At present, new research results are constantly emerging in the field of near-infrared spectroscopy analysis technology at home and abroad. These results play an important role in industrial production such as food, medicine, and tobacco. Near-infrared spectroscopy analysis technology is a modern high-tech analysis and testing technology. It is an analysis method that uses the material information contained in near-infrared light for analysis. It is mainly used for qualitative and quantitative analysis of organic matter. Its biggest features are: non-destructive to samples, easy operation, rapid analysis, and measurement signals can be transmitted and analyzed over long distances.

[0003] However, when the current optical flow cell for liquefied petroleum gas analysis is in use, the liquefied petroleum gas flows in the optical flow cell and a part of it adheres to the optical flow cell, and the cleaning of the optical flow cell is relatively troublesome. In view of the above problems, an optical flow cell for liquefied petroleum gas analysis is proposed. Utility Model Content

[0004] The utility model aims to provide an optical flow cell for liquefied petroleum gas analysis to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An optical flow cell for liquefied petroleum gas analysis comprises a connecting plate, a shell is fixedly mounted on one side of the connecting plate, a quartz tube is fixedly mounted in the shell, windows are symmetrically opened on the front and rear sides of the quartz tube, connecting covers are fixedly mounted on both ends of the quartz tube by bolts, connecting heads are threadedly connected on the connecting covers, an input tube is plugged into the lower connecting head, and an output tube is plugged into the upper connecting head, openings are opened on the shell to match the input tube and the output tube, through holes corresponding to the input tube and the output tube are opened on the connecting plate, and the input tube and the output tube pass through the corresponding openings and through holes.

[0007] As a further solution of the utility model: a rubber ring is arranged between the connecting cover and the end of the quartz tube.

[0008] As a further solution of the utility model: countersunk holes are symmetrically opened on the connecting plate, and bolts for installation are arranged in the countersunk holes.

[0009] As a further solution of the utility model: a protective shell is provided on the connection cover, and the protective shell is fixedly connected to the connection cover by bolts.

[0010] As a further solution of the utility model: the side wall of the connecting plate is provided with a slot adapted to the protective shell, and the protective shell is clamped in the slot.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model removes the connection covers by removing the bolts on the connection covers at both ends, and the two ends of the quartz tube are opened, which is convenient for cleaning the inner wall of the quartz tube, the connection cover and the connector, and convenient for cleaning the optical flow cell.

[0013] 2. The utility model covers the connector and the ends of the input pipe and the output pipe connected thereto by providing a protective shell, and the protective shell is clamped in the clamping slot, thereby increasing the stability of the installation of the protective shell, protecting the connector and improving the appearance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the structure of an optical flow cell for liquefied petroleum gas analysis.

[0015] Figure 2 A cross-sectional view of an optical flow cell for liquefied petroleum gas analysis.

[0016] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0017] Figure 4 A partial side view of an optical flow cell for liquefied petroleum gas analysis.

[0018] In the figure: 1. connecting plate; 2. shell; 3. window; 4. protective shell; 5. input pipe; 6. output pipe; 7. countersunk hole; 8. through hole; 9. opening; 10. quartz tube; 11. connecting cover; 12. connecting head; 13. rubber ring; 14. slot. DETAILED DESCRIPTION

[0019] 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 part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4 In an embodiment of the utility model, an optical flow cell for analyzing liquefied petroleum gas includes a connecting plate 1, a shell 2 is fixedly installed on one side of the connecting plate 1, a quartz tube 10 is fixedly installed in the shell 2, the shell 2 is symmetrically provided with windows 3 on the front and rear sides of the quartz tube 10, a connecting cover 11 is fixedly installed on both ends of the quartz tube 10 by bolts, a connector 12 is threadedly connected to the connecting cover 11, an input pipe 5 is plugged into the lower connector 12, and an output pipe 6 is plugged into the upper connector 12, the shell 2 is provided with an opening 9 adapted to the input pipe 5 and the output pipe 6, a through hole 8 corresponding to the input pipe 5 and the output pipe 6 is provided on the connecting plate 1, and the input pipe 5 and the output pipe 6 pass through the corresponding opening 9 and through hole 8.

[0021] When in use, the shell 2 is placed into the mounting groove of the optical flow cell of the spectrometer so that the window 3 opened in the shell 2 is aligned with the light source and the receiver, and the liquefied petroleum gas is input into the quartz tube 10 through the input pipe 5 and discharged through the output pipe 6. The light source and the receiver perform spectral analysis on the liquefied petroleum gas. After use, the connecting cover 11 is removed by removing the bolts on the connecting cover 11 at both ends, and the two ends of the quartz tube 10 are opened, so that the inner wall of the quartz tube 10, the connecting cover 11 and the connecting head 12 are cleaned conveniently, and the cleaning of the optical flow cell is convenient.

[0022] A rubber ring 13 is provided between the connection cover 11 and the end of the quartz tube 10 , and the rubber ring 13 increases the air tightness of the connection between the quartz tube 10 and the connection cover 11 .

[0023] The connecting plate 1 is symmetrically provided with countersunk holes 7, in which bolts for installation are arranged. The housing 2 is placed in the installation slot of the spectrometer, and the installation bolts penetrate the countersunk holes 7 and are threadedly connected with the corresponding threaded holes to achieve the installation of the optical flow cell.

[0024] The connection cover 11 is covered with a protective shell 4, which is fixedly connected to the connection cover 11 by bolts. The protective shell 4 is provided to cover the connector 12 and the ends of the input pipe 5 and the output pipe 6 connected thereto, thereby protecting the connector 12 and improving the appearance of the device.

[0025] The side wall of the connecting plate 1 is provided with a slot 14 adapted to the protective shell 4 , and the protective shell 4 is clamped in the slot 14 . By clamping the protective shell 4 in the slot 14 , the stability of the installation of the protective shell 4 is increased.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical flow cell for liquefied petroleum gas analysis, comprising a connecting plate (1), characterized in that: A shell (2) is fixedly mounted on one side of the connection plate (1), a quartz tube (10) is fixedly mounted in the shell (2), windows (3) are symmetrically provided on the front and rear sides of the quartz tube (10) on the shell (2), connection covers (11) are fixedly mounted on both ends of the quartz tube (10) by bolts on the shell (2), a connection head (12) is threadedly connected to the connection cover (11), an input tube (5) is plugged into the lower connection head (12), and an output tube (6) is plugged into the upper connection head (12), the shell (2) is provided with an opening (9) adapted to the input tube (5) and the output tube (6), through holes (8) corresponding to the input tube (5) and the output tube (6) are provided on the connection plate (1), and the input tube (5) and the output tube (6) pass through the corresponding openings (9) and through holes (8).

2. The optical flow cell for liquefied petroleum gas analysis according to claim 1, characterized in that: A rubber ring (13) is provided between the connection cover (11) and the end of the quartz tube (10).

3. The optical flow cell for liquefied petroleum gas analysis according to claim 1, characterized in that: The connection plate (1) is symmetrically provided with countersunk holes (7), and bolts for installation are arranged in the countersunk holes (7).

4. The optical flow cell for liquefied petroleum gas analysis according to claim 1, characterized in that: A protective shell (4) is provided on the connection cover (11), and the protective shell (4) is fixedly connected to the connection cover (11) by bolts.

5. The optical flow cell for liquefied petroleum gas analysis according to claim 1, characterized in that: The side wall of the connecting plate (1) is provided with a slot (14) adapted to the protective shell (4), and the protective shell (4) is clamped in the slot (14).

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