A gas chromatographic apparatus provided with a multi-temperature-zone column oven

Abstract

The utility model relates to gas chromatography analysis technical field, concretely is a kind of gas chromatography analysis device with multiple temperature zone column box, including device ontology, device ontology top is provided with gas path box, device ontology lower part is provided with electrical cabinet and column box, electrical cabinet is used to control column box, gas path box is used to supply gas to column box, wherein column box includes multiple column box units, each column box unit is provided with explosion -proof hot blower mechanism, and multiple column box units overlapping arrangement can constitute multiple temperature zones, electrical cabinet is provided with multiple electrical cabinet units, and electrical cabinet unit quantity is equal to column box unit quantity, and electrical cabinet unit position is matched with column box unit, by the big column box in the existing gas chromatography analysis device is replaced for multiple column box units, and each column box unit uses explosion -proof hot blower mechanism separately heating respectively, can let sample gradient temperature rise or temperature drop, also can protect part of not high-temperature-resistant device in column box, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography analysis technology, specifically a gas chromatography analysis device equipped with a multi-temperature zone column oven. Background Technology

[0002] A gas chromatograph is an instrument used for gas analysis and detection. Based on gas chromatography, it utilizes gas as the mobile phase for chromatographic separation. The vaporized sample is carried into the chromatographic column by a carrier gas. The stationary phase in the column interacts with the molecules of each component in the sample through different forces, resulting in different elution times for each component, thus separating them. Using an appropriate identification and recording system, a chromatogram is generated, showing the elution time and concentration of each component. Based on the elution times and order shown in the chromatogram, qualitative analysis of the compounds can be performed; based on the peak height and area, quantitative analysis can be performed.

[0003] Chinese patent CN218567287U discloses a rapidly heated gas chromatograph column oven, which uses a single column oven with a single heating port. When performing gradient heating or cooling on the test sample, only one operation can be selected, and multiple test results cannot be obtained at the same time. Utility Model Content

[0004] The purpose of this invention is to provide a gas chromatography analysis device with a multi-temperature zone column oven, addressing the aforementioned problems.

[0005] The technical solution adopted by this utility model is as follows: a gas chromatography analysis device with a multi-temperature zone column oven, including a device body, a gas path box is provided on the top of the device body, an electrical box and a column oven are provided at the bottom of the device body, the electrical box is used to control the column oven, the gas path box is used to supply gas to the column oven, wherein the column oven includes multiple column oven units, each column oven unit is provided with an explosion-proof hot air blower mechanism, and the multiple column oven units are overlapped to form multiple temperature zones;

[0006] The electrical box contains multiple electrical box units, and the number of electrical box units is equal to the number of column box units. The positions of the electrical box units are matched with those of the column box units.

[0007] Furthermore, the column box includes a first column box unit, a second column box unit, and a third column box unit;

[0008] The electrical box includes a first electrical box, a second electrical box, and a third electrical box;

[0009] The first electrical box is used to control the first column box unit;

[0010] The second electrical box is used to control the second column box unit;

[0011] The third electrical box is used to control the third column box unit.

[0012] Furthermore, the first column box unit includes a first door panel and a first box body, and the first door panel is located at the opening of the first box body, and one end of the first door panel is connected to the side of the first box body via a hinge;

[0013] The second column box unit includes a second door panel and a second box body, and the second door panel is located at the opening of the second box body, and one end of the second door panel is connected to the side of the second box body by a hinge;

[0014] The third column box unit includes a third door panel and a third box body, with the third door panel located at the opening of the third box body, and one end of the third door panel connected to the side of the third box body via a hinge.

[0015] Furthermore, the first box body is provided with a first column cavity, and the first column cavity is provided with a first explosion-proof heat blower and a first exhaust port;

[0016] The air outlet of the first explosion-proof hot air blower faces the first column cavity, and hot air can be discharged from the first exhaust hole;

[0017] The second housing is provided with a second column cavity, and the second column cavity is provided with a second explosion-proof heat blower and a second exhaust port;

[0018] The air outlet of the second explosion-proof hot air blower faces the second column cavity, and hot air can be discharged from the second exhaust port;

[0019] The third box is provided with a third column cavity, and the third column cavity is provided with a third explosion-proof heat blower and a third exhaust port;

[0020] The air outlet of the third explosion-proof hot air blower faces the third column cavity, and hot air can be discharged from the third exhaust hole.

[0021] Furthermore, the first, second, and third explosion-proof heat blowers have the same structure, each including an air inlet pipe, a connecting pipe, and a heating pipe.

[0022] One end of the connecting pipe is connected to the heating pipe, and the other end is connected to the air inlet pipe. The connecting pipe passes through the first box, the second box, or the third box.

[0023] The intake pipe is connected to the air passage box and is used to provide airflow;

[0024] The heating tube is located inside the first, second, or third housing, and a heating element is installed inside the heating tube.

[0025] Furthermore, the heating tube is provided with a heating chamber, and the heating component is a heating rod core, which is located in the heating chamber. The heating rod core can generate heat after being powered on.

[0026] Furthermore, the axes of the air intake pipe, connecting pipe, and heating pipe coincide, and the heating rod core is arranged around the axis of the heating pipe.

[0027] Furthermore, the first, second, and third boxes are all filled with aluminum silicate fiber insulation boards.

[0028] Furthermore, the first door panel, the second door panel, and the third door panel are also provided with door panel covers, and silicone sealing strips are provided between the door panel covers and the first door panel, the second door panel, and the third door panel.

[0029] The beneficial effects of this utility model include at least one of the following;

[0030] 1. By replacing the column oven in the existing gas chromatography analysis device with multiple column oven units, and each column oven unit is individually heated by an explosion-proof hot air blower mechanism, the sample can be gradually heated or cooled, and the components inside the column oven that are not resistant to high temperatures can be protected, thus extending their service life.

[0031] 2. With the overall volume of the gas chromatography analysis device remaining unchanged, the column oven composed of multiple column oven units has a narrower temperature range distribution and better accuracy than the single large column oven structure in the existing technology.

[0032] 3. The use of aluminum silicate fiberboard filler gives the column box unit good thermal insulation effect, reducing the impact of the external environment and adjacent column box units. In addition, the added silicone sealing strip cavity, door panel, door cover and other structures are not directly connected, preventing high temperature from spreading to the outer surface of the instrument and avoiding burns.

[0033] 4. This solves the problem that existing single-column box with a single heating port structure can only perform one operation when performing gradient heating or cooling on the test sample, and cannot obtain multiple test results at the same time. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a gas chromatography analysis device equipped with a multi-temperature zone column oven;

[0035] Figure 2 This is a schematic diagram of the internal structure of a gas chromatography analysis device equipped with a multi-temperature zone column oven;

[0036] Figure 3 This is a schematic diagram of the internal structure of the column box unit;

[0037] Figure 4 Schematic diagram of the structure of an explosion-proof heat blower;

[0038] Figure 5 A schematic diagram of the internal structure of the explosion-proof heat blower mechanism.

[0039] In the picture:

[0040] 1 is the device body, 2 is the air circuit box, 3 is the display panel, 4 is the first electrical box, 5 is the second electrical box, 6 is the third electrical box, 7 is the first door panel, 8 is the second door panel, 9 is the third door panel, 10 is the first explosion-proof heat blower, 11 is the second explosion-proof heat blower, 12 is the third explosion-proof heat blower, 13 is the first column cavity, 14 is the second column cavity, 15 is the third column cavity, 16 is the first exhaust port, 17 is the second exhaust port, 18 is the third exhaust port, 19 is the aluminum silicate fiber insulation board, 20 is the heating tube, 21 is the connecting pipe, 22 is the air inlet pipe, 23 is the heating chamber, and 24 is the heating rod core. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] like Figures 1 to 3 As shown, a gas chromatography analysis device with a multi-temperature zone column oven includes a device body 1, a gas path box 2 is provided on the top of the device body 1, and an electrical box and a column oven are provided at the bottom of the device body 1. The electrical box is used to control the column oven, and the gas path box 2 is used to supply gas to the column oven. The column oven includes multiple column oven units, each of which is provided with an explosion-proof hot air blowing mechanism, and the multiple column oven units are overlapped to form multiple temperature zones.

[0048] The electrical box contains multiple electrical box units, and the number of electrical box units is equal to the number of column box units. The positions of the electrical box units are matched with those of the column box units.

[0049] The purpose of this design is to replace the existing column oven in a gas chromatography analyzer with multiple column oven units, each with its own explosion-proof heating element. This allows for gradient heating or cooling of the sample and protects heat-sensitive components within the column oven, extending its lifespan. While maintaining the overall size of the gas chromatography analyzer, the column oven composed of multiple units offers a narrower temperature distribution and higher accuracy compared to a single large column oven in existing technologies. It also solves the problem of existing single-column, single-heater-port structures, which can only perform one operation when gradient heating or cooling the sample, preventing the acquisition of multiple test results simultaneously.

[0050] It should also be noted that the pneumatic and electrical structures of the pneumatic and electrical boxes used in this embodiment are all existing technologies. This embodiment only superimposes the pneumatic and electrical structures on the basis of existing technologies to accommodate multiple column box units. Those skilled in the art can select according to actual needs when implementing this solution.

[0051] In this embodiment, a three-column box unit is used as an example for illustration. The column box includes a first column box unit, a second column box unit, and a third column box unit.

[0052] The electrical box includes a first electrical box 4, a second electrical box 5, and a third electrical box 6;

[0053] The first electrical box 4 is used to control the first column box unit;

[0054] The second electrical box 5 is used to control the second column box unit;

[0055] The third electrical box 6 is used to control the third column box unit.

[0056] Meanwhile, the first column box unit includes a first door panel 7 and a first box body, and the first door panel 7 is located at the opening of the first box body, and one end of the first door panel 7 is connected to the side of the first box body by a hinge;

[0057] The second column box unit includes a second door panel 8 and a second box body, and the second door panel 8 is located at the opening of the second box body, and one end of the second door panel 8 is connected to the side of the second box body by a hinge;

[0058] The third column box unit includes a third door panel 9 and a third box body. The third door panel 9 is located at the opening of the third box body, and one end of the third door panel 9 is connected to the side of the third box body via a hinge.

[0059] The first door panel 7, the second door panel 8, and the third door panel 9 are also provided with door panel covers, and silicone sealing strips are provided between the door panel covers and the first door panel 7, the second door panel 8, and the third door panel 9.

[0060] Meanwhile, the first, second, and third boxes are all filled with aluminum silicate fiber insulation boards 19.

[0061] It should be noted that, in actual design, in order to ensure the airtightness of the entire column box unit, in addition to the door panel and door panel cover, an outer box is set inside the door panel, and an inner box is set inside the outer box. That is, the first box, the second box and the third box are all double-layer structures. This multi-layer wrapping improves the overall airtightness. The use of aluminum silicate fiberboard filler gives the column box unit good thermal insulation effect, reducing the influence of the external environment and adjacent column box units. In addition, the added silicone sealing strip cavity, door panel, door panel cover and other structures are not directly connected, preventing high temperature from spreading to the outer surface of the instrument and avoiding burns.

[0062] In this embodiment, a first cylindrical cavity 13 is provided inside the first box, and a first explosion-proof hot air blower 10 and a first exhaust port 16 are provided in the first cylindrical cavity 13.

[0063] The air outlet of the first explosion-proof hot air blower 10 faces the first column cavity 13, and hot air can be discharged from the first exhaust hole 16.

[0064] The second box is provided with a second column cavity 14, and the second column cavity 14 is provided with a second explosion-proof heat blower 11 and a second exhaust port 17.

[0065] The air outlet of the second explosion-proof hot air blower 11 faces the second column cavity 14, and hot air can be discharged from the second exhaust port 17;

[0066] The third box is provided with a third column cavity 15, and the third column cavity 15 is provided with a third explosion-proof heat blower 12 and a third exhaust port 18.

[0067] The air outlet of the third explosion-proof hot air blower 12 faces the third column cavity 15, and hot air can be discharged from the third exhaust port 18.

[0068] The purpose of this design is to heat the three column box units by setting up a first explosion-proof heat blower, a second explosion-proof heat blower, and a third explosion-proof heat blower respectively.

[0069] Meanwhile, the first explosion-proof heat blower 10, the second explosion-proof heat blower 11 and the third explosion-proof heat blower 12 have the same structure. Specifically, the explosion-proof heat blower structure includes an air inlet pipe 22, a connecting pipe 21 and a heating pipe 20.

[0070] One end of the connecting pipe 21 is connected to the heating pipe 20, and the other end is connected to the air inlet pipe 22. The connecting pipe 21 passes through the first box, the second box, or the third box.

[0071] The air intake pipe 22 is connected to the air passage box 2 and is used to provide airflow;

[0072] The heating tube 20 is located inside the first box, the second box, or the third box, and a heating component is provided inside the heating tube 20.

[0073] Meanwhile, a heating chamber 23 is provided in the heating tube 20, and the heating component is a heating rod core 24, which is located in the heating chamber 23. The heating rod core 24 can generate heat after being powered on.

[0074] Meanwhile, the axes of the air intake pipe 22, the connecting pipe 21 and the heating pipe 20 coincide, and the heating rod core 24 is arranged around the axis of the heating pipe 20.

[0075] The purpose of this design is to deliver gas to the intake pipe 22 via the gas passage connected to the gas box, while the connecting pipe 21 is inserted into the upper part of the box, and its two sides are connected to the intake pipe and the heating pipe respectively through the threaded structure. In this way, the air input from the intake pipe can enter the heating pipe through the connecting pipe, and a heating rod core is installed inside the heating pipe. Usually, this heating rod core is electrically heated, so that the temperature inside the heating pipe can be raised to a maximum of 400°C. The hot air flow discharged or blown out heats the column cavity, and the maximum temperature of the column cavity is 260°C.

[0076] Meanwhile, this embodiment also includes a display panel 3 for displaying various indicator parameters. It should be noted that this parameter display is an existing technology, which involves collecting data from sensors within various components and then processing it before displaying the data.

[0077] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas chromatography analysis apparatus equipped with a multi-temperature zone column oven, comprising an apparatus body (1), a gas path box (2) disposed on the top of the apparatus body (1), an electrical box and a column oven disposed at the bottom of the apparatus body (1), wherein the electrical box is used to control the column oven, and the gas path box (2) is used to supply gas to the column oven, characterized in that, The column box includes multiple column box units, each column box unit is equipped with an explosion-proof heat blower mechanism, and the multiple column box units are overlapped to form multiple temperature zones; The electrical box contains multiple electrical box units, and the number of electrical box units is equal to the number of column box units. The positions of the electrical box units are matched with those of the column box units. The column box includes a first column box unit, a second column box unit, and a third column box unit; The electrical box includes a first electrical box (4), a second electrical box (5), and a third electrical box (6); The first electrical box (4) is used to control the first column box unit; The second electrical box (5) is used to control the second column box unit; The third electrical box (6) is used to control the third column box unit; The first column box unit includes a first door panel (7) and a first box body, and the first door panel (7) is located at the opening of the first box body, and one end of the first door panel (7) is connected to the side of the first box body by a hinge; The second column box unit includes a second door panel (8) and a second box body, and the second door panel (8) is located at the opening of the second box body, and one end of the second door panel (8) is connected to the side of the second box body by a hinge; The third column box unit includes a third door panel (9) and a third box body, and the third door panel (9) is located at the opening of the third box body, and one end of the third door panel (9) is connected to the side of the third box body by a hinge; The first box is provided with a first column cavity (13), and the first column cavity (13) is provided with a first explosion-proof heat blower (10) and a first exhaust port (16). The air outlet of the first explosion-proof hot air blower (10) faces the first column cavity (13), and hot air can be discharged from the first exhaust hole (16); The second box is provided with a second column cavity (14), and the second column cavity (14) is provided with a second explosion-proof heat blower (11) and a second exhaust port (17). The air outlet of the second explosion-proof hot air blower (11) faces the second column cavity (14), and hot air can be discharged from the second exhaust hole (17); The third box is provided with a third column cavity (15), and the third column cavity (15) is provided with a third explosion-proof heat blower (12) and a third exhaust port (18). The air outlet of the third explosion-proof hot air blower (12) faces the third column cavity (15), and hot air can be discharged from the third exhaust hole (18); The first explosion-proof heat blower (10), the second explosion-proof heat blower (11) and the third explosion-proof heat blower (12) have the same structure, each including an air inlet pipe (22), a connecting pipe (21) and a heating pipe (20). One end of the connecting pipe (21) is connected to the heating pipe (20), and the other end is connected to the air inlet pipe (22). The connecting pipe (21) passes through the first box, the second box, or the third box. The intake pipe (22) is connected to the air passage box (2) and is used to provide airflow; The heating tube (20) is located in the first box, the second box, or the third box, and a heating component is provided in the heating tube (20).

2. The gas chromatography analysis apparatus equipped with a multi-temperature zone column oven according to claim 1, characterized in that, The heating tube (20) is provided with a heating chamber (23), and the heating component is a heating rod core (24). The heating rod core (24) is located in the heating chamber (23), and the heating rod core (24) can generate heat after being powered on.

3. A gas chromatography analysis apparatus equipped with a multi-temperature zone column oven according to claim 2, characterized in that, The axes of the air inlet pipe (22), the connecting pipe (21) and the heating pipe (20) coincide, and the heating rod core (24) is arranged around the axis of the heating pipe (20).

4. A gas chromatography analysis apparatus equipped with a multi-temperature zone column oven according to any one of claims 1 to 3, characterized in that, The first, second, and third boxes are all filled with aluminum silicate fiber insulation boards (19).

5. A gas chromatography analysis apparatus equipped with a multi-temperature zone column oven according to claim 4, characterized in that, The first door panel (7), the second door panel (8) and the third door panel (9) are also provided with door panel covers, and a silicone sealing strip is provided between the door panel cover and the first door panel (7), the second door panel (8) and the third door panel (9).

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