Gas leakage detection device for gas chromatograph

Abstract

The utility model provides a gas leakage detection device for a gas chromatograph, which relates to the technical field of gas leakage detection devices and comprises a gas leakage detection assembly, a protection assembly is arranged on the outer side of the gas leakage detection assembly, one end of the gas leakage detection assembly is connected with a connecting assembly, and the gas leakage detection assembly comprises a vacuum pump. And one end of the vacuum pump is connected with a connecting pipe. According to the utility model, the insertion pipe is inserted into the detection pipeline, so that the first connecting disc is connected with the second connecting disc, and the insertion block is clamped with the insertion groove, thereby facilitating the connection of the gas leakage detection assembly and the gas chromatograph pipeline, pulling the handle outwards to compress the spring under stress, and driving the limiting rod to move outwards. After the inserting block is clamped with the inserting groove, the handle is loosened, and one end of the limiting rod is connected into the limiting groove by utilizing the elasticity of the spring, so that the limiting is facilitated, a large number of bolts are not needed for connecting operation, and the quick connection and disassembly with the gas chromatograph pipeline are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas leakage detection device technical field especially relates to a gas leakage detection device for gas chromatograph. BACKGROUND

[0002] Gas chromatograph refers to the chromatographic analysis instrument using gas as mobile phase, its principle mainly is to realize the separation of mixture by using the difference of boiling point, polarity and adsorption property of matter, the sample to be analyzed is brought into the chromatographic column by inert gas (namely carrier gas, also called mobile phase) after being gasified in the gasification chamber, the column contains liquid or solid stationary phase, each component in the sample tends to form distribution or adsorption balance between the mobile phase and the stationary phase, with the flow of carrier gas, the sample components repeatedly distribute or adsorb and desorb in the movement, the components with high distribution concentration flow out of the chromatographic column first, while the components with high distribution concentration in the stationary phase flow out later, gas chromatograph is widely used in existing experimental research. When using the gas chromatograph, it is necessary to detect whether the gas leakage occurs.

[0003] In the prior art, such as patent application number: CN209131923U "a gas leakage detection device for gas chromatograph", including for connecting gas chromatograph and hydrogen generator detection device body, the detection device body includes base and vertical first detection tube, second detection tube and third detection tube arranged on the base, three are mutually connected and the first detection tube is connected with the hydrogen generator through the air inlet pipe; the outer wall of the base is externally connected with three air outlet pipes, which are respectively connected with the first detection tube, the second detection tube and the third detection tube, and the three air outlet pipes are respectively connected with different gas chromatographs away from the base; the bottom of the three detection tubes is provided with a switch valve. The utility model has the advantages that whether the gas chromatograph or the hydrogen generator leaks can be detected, so that the staff can timely repair the equipment, and the accuracy of data analysis of the gas chromatograph is improved.

[0004] The existing gas leakage detection device for gas chromatograph is connected with the pipeline of the gas chromatograph for detection, the connection of the pipeline is not stable, the pipeline connection place is prone to falling, which affects the normal operation of the detection work, and the connection operation of the pipeline is relatively complex, thereby causing the problem of low detection efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that the gas leakage detection device for gas chromatograph in the prior art is not stable in connection with the pipeline of the gas chromatograph, the pipeline connection place is prone to falling, which affects the normal operation of the detection work, and the connection operation of the pipeline is relatively complex, thereby causing the problem of low detection efficiency, and proposes a gas leakage detection device for gas chromatograph.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: A kind of gas chromatograph is used to leak detection device, including leak detection component, the outside of the leak detection component is provided with protection component, one end of the leak detection component is connected with connecting component, the leak detection component includes vacuum pump, one end of the vacuum pump is connected with connecting pipe, the connecting component includes first connecting disc and second connecting disc, the side of the first connecting disc is connected with plug-in pipe, the side of the second connecting disc is connected with detection pipeline, the outside of the first connecting disc is distributed with multiple plug-in blocks, the outside of the second connecting disc is distributed with multiple plug-in slots, the plug-in block is inserted with plug-in slot, the side of the plug-in slot is installed with fixed frame, the inside of the fixed frame is penetrated with limiting rod, the outside of the limiting rod is provided with spring.

[0007] Preferably, the outside of the plug-in pipe is distributed with multiple sealing snap rings, the inner wall of the detection pipeline is provided with a clamping groove, and the sealing snap ring is clamped in the clamping groove.

[0008] Preferably, the side of the plug-in block is provided with a limiting slot, and one end of the limiting rod is movably connected in the limiting slot.

[0009] Preferably, the surface of the second connecting disc is provided with a sealing groove, the surface of the first connecting disc is provided with a first sealing ring, and the first sealing ring is clamped in the sealing groove.

[0010] Preferably, the side of the first connecting disc is connected with one end of the connecting pipe, and the plug-in pipe is plugged in the inside of the detection pipeline.

[0011] Preferably, one end of the limiting rod is provided with a handle, and the top of the vacuum pump is provided with a pressure gauge and a control switch.

[0012] Preferably, the protection component includes a protection box, and the protection box is arranged on the outside of the vacuum pump.

[0013] Preferably, the two sides of the protection box are provided with ventilation grilles, the inside of the protection box is provided with sliding grooves at four corners, and the inside of the sliding grooves is movably provided with a drying box.

[0014] Preferably, the top of the protection box is provided with a box cover, and the box cover is provided with a light-transmitting plate.

[0015] Preferably, the drying box is arranged at the side of the ventilation grille.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that,

[0017] 1. In the utility model, through the plug -in pipe is inserted in the inside of detection pipeline, make first connecting disc and second connecting disc connect, simultaneously make plug -in block and plug -in slot card -mounting, the gas leakage detection assembly is connected with gas chromatograph pipeline, the handle is pulled to outside, make spring compression under stress, further drive the limit rod to move to outside, then when plug -in block and plug -in slot card -mounting, loosen handle utilize the elasticity of spring, make the limit rod extension driven by spring, further promote the one end of limit rod to be connected in limit slot inside, be favorable to limit, do not need to use a large number of bolts and connect operation, be favorable to fast with gas chromatograph pipeline connection and disassembly, do not need complicated installation step, shorten the preparation time before detection, to realize efficient stable installation, effectively improve overall detection efficiency.

[0018] 2. In the utility model, when the plug-in pipe is inserted in the inside of detection pipeline, the sealing snap ring is clamped in the inside of the card slot, which is conducive to providing sealing effect, when the first connecting disc and the second connecting disc are connected and attached, the first sealing ring is clamped in the inside of the sealing groove, which is conducive to further providing sealing effect, which is conducive to avoiding leakage at the pipeline connection, thereby improving the accuracy and reliability of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A three-dimensional structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model;

[0020] Figure 2 Another angle structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model;

[0021] Figure 3 A partial structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model;

[0022] Figure 4 A partial limit assembly structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model;

[0023] Figure 5 A partial structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model;

[0024] Figure 6 A partial expansion structure schematic diagram of the gas leakage detection device for gas chromatograph is provided for the utility model.

[0025] Legend: 1, air leakage detection assembly; 101, vacuum pump; 102, pressure gauge; 103, control switch; 104, connecting pipe; 2, connecting assembly; 201, first connecting disc; 202, second connecting disc; 203, detection pipeline; 204, first sealing ring; 205, sealing groove; 206, plug-in pipe; 207, sealing snap ring; 208, clamping groove; 209, plug-in block; 210, plug-in groove; 211, fixing frame; 212, limiting rod; 213, spring; 214, handle; 3, protection assembly; 301, protection box; 302, ventilation grille; 303, box cover; 304, light transmission plate; 305, sliding groove; 306, drying box. DETAILED DESCRIPTION

[0026] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0028] Embodiment 1: as Figures 1-6As shown, the utility model provides a kind of technical scheme: a kind of gas chromatograph with gas leakage detection device, including gas leakage detection component 1, the outside of gas leakage detection component 1 is provided with protection component 3, one end of gas leakage detection component 1 is connected with connecting component 2, gas leakage detection component 1 includes vacuum pump 101, one end of vacuum pump 101 is connected with connecting pipe 104, connecting component 2 includes first connecting disc 201 and second connecting disc 202, the side of first connecting disc 201 is connected with plug-in pipe 206, the side of second connecting disc 202 is connected with detection pipeline 203, the outside of first connecting disc 201 is distributed with multiple plug-in blocks 209, the outside of second connecting disc 202 is distributed with multiple plug-in slots 210, plug-in block 209 and plug-in slot 210 are inserted, the side of plug-in slot 210 is equipped with fixed frame 211, the inside of fixed frame 211 is penetrated by limiting rod 212, the outside of limiting rod 212 is provided with spring 213, the outside of plug-in pipe 206 is distributed with multiple sealing snap rings 207, the inner wall of detection pipeline 203 is equipped with slot 208, sealing snap ring 207 is clamped in the inside of slot 208, the side of plug-in block 209 is equipped with limiting slot, one end of limiting rod 212 is movably connected in the inside of limiting slot, the surface of second connecting disc 202 is equipped with sealing groove 205, the surface of first connecting disc 201 is equipped with first sealing ring 204, first sealing ring 204 is clamped in the inside of sealing groove 205, the side of first connecting disc 201 is connected with one end of connecting pipe 104, plug-in pipe 206 is inserted in the inside of detection pipeline 203, one end of limiting rod 212 is equipped with handle 214.

[0029] In the embodiment, by inserting the plug-in pipe 206 inside the detection pipe 203, so that the sealing snap ring 207 is clamped inside the clamping groove 208, it is beneficial to provide a sealing effect, so that the first connecting disc 201 and the second connecting disc 202 are connected, and at the same time the plug-in block 209 is clamped with the plug-in groove 210, which facilitates the connection of the gas leakage detection assembly 1 with the gas chromatograph pipe. When the first connecting disc 201 and the second connecting disc 202 are connected and fitted, the first sealing ring 204 is clamped inside the sealing groove 205, which is beneficial to further provide a sealing effect, and is beneficial to avoid leakage at the pipe connection, thereby improving the accuracy and reliability of the detection result. By pulling the handle 214 outward, the spring 213 is compressed under stress, thereby driving the limiting rod 212 to move outward. Then, after the plug-in block 209 is clamped with the plug-in groove 210, the handle 214 is loosened by the elasticity of the spring 213, so that the spring 213 drives the limiting rod 212 to extend, thereby causing one end of the limiting rod 212 to be connected inside the limiting groove. It is beneficial to limit without using a large number of bolts for connection operation, which is beneficial to quickly connect and disassemble with the gas chromatograph pipe, without complicated installation steps, shortening the preparation time before detection, thereby realizing efficient and stable installation, effectively improving the overall detection efficiency. When detecting, the carrier gas, hydrogen, air and tail gas source of the gas chromatograph are closed and connected to the vacuum pump 101. The vacuum pump 101 is turned on, and the reading on the pressure gauge 102 is observed. If the reading on the pressure gauge 102 decreases, it indicates that there is a gas leak.

[0030] As shown in Figures 1-6 The protection assembly 3 includes a protection box 301, which is arranged outside the vacuum pump 101. Ventilation grilles 302 are formed on both sides of the protection box 301. Slide grooves 305 are installed on the inner sides of the four corners of the protection box 301. Dry boxes 306 are movably installed inside the slide grooves 305. A box cover 303 is installed on the top of the protection box 301. A light transmission plate 304 is installed on the box cover 303. The dry boxes 306 are arranged beside the ventilation grilles 302.

[0031] In the embodiment, by sleeving the protection box 301 outside the vacuum pump 101, it is beneficial to provide protection for the vacuum pump 101. The ventilation grilles 302 facilitate heat dissipation and ventilation of the vacuum pump 101, ensuring stable operation of the vacuum pump 101, thereby improving the detection efficiency. By sliding the dry boxes 306 inside the slide grooves 305, it is convenient to maintain and replace the dry boxes 306. The dry boxes 306 contain multiple drying agents. The dry boxes 306 are arranged beside the ventilation grilles 302, effectively absorbing moisture in the air, keeping the air dry at the inlet and outlet, thereby ensuring stable operation of the vacuum pump 101, avoiding the influence of humid air on the vacuum pump 101, and thereby ensuring the accuracy and reliability of the detection result.

[0032] The working principle of the embodiment is as follows: in use, first, the plug-in pipe 206 is plugged in the inside of the detection pipe 203, so that the sealing clasp ring 207 is clamped in the inside of the clamping groove 208, which is conducive to providing a sealing effect, facilitating the connection of the first connecting disc 201 and the second connecting disc 202, and simultaneously facilitating the clamping of the plug-in block 209 and the plug-in groove 210, which facilitates the connection of the gas leakage detection assembly 1 and the gas chromatograph pipe. When the first connecting disc 201 and the second connecting disc 202 are connected and fitted, the first sealing ring 204 is clamped in the inside of the sealing groove 205, which is conducive to further providing a sealing effect and avoiding leakage at the pipe connection. The handle 214 is pulled outward, so that the spring 213 is compressed under stress, and then the limiting rod 212 is driven to move outward. Then, after the plug-in block 209 is clamped with the plug-in groove 210, the handle 214 is loosened by the elasticity of the spring 213, so that the spring 213 drives the limiting rod 212 to extend, and then the one end of the limiting rod 212 is connected in the inside of the limiting groove, which is conducive to limiting. When detecting, the carrier gas, hydrogen, air and tail gas source of the gas chromatograph are closed and connected to the vacuum pump 101. The vacuum pump 101 is turned on, and the reading on the pressure gauge 102 is observed. If the reading on the pressure gauge 102 decreases, it indicates that there is gas leakage. The protection box 301 is sleeved on the outside of the vacuum pump 101, which is conducive to providing a protection effect for the vacuum pump 101. The ventilation grille 302 is conducive to facilitating the heat dissipation and ventilation of the vacuum pump 101. The drying box 306 is slidably installed in the inside of the sliding groove 305, which facilitates the maintenance and replacement of the drying box 306. The drying box 306 contains a plurality of drying agents, and the drying box 306 is arranged at the side of the ventilation grille 302, which effectively absorbs moisture in the air and keeps the air dry at the air inlet and outlet, thereby ensuring the stable operation of the vacuum pump 101.

[0033] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments shall fall within the protection scope of the present application.

Claims

1. A gas leak detection device for a gas chromatograph comprising a gas leak detection assembly (1), characterized in that: The outer side of the air leakage detection assembly (1) is provided with a protection assembly (3), one end of the air leakage detection assembly (1) is connected with a connecting assembly (2), the air leakage detection assembly (1) comprises a vacuum pump (101), one end of the vacuum pump (101) is connected with a connecting pipe (104), the connecting assembly (2) comprises a first connecting disc (201) and a second connecting disc (202), the side surface of the first connecting disc (201) is connected with a plug-in pipe (206), the side surface of the second connecting disc (202) is connected with a detection pipeline (203), the outer side of the first connecting disc (201) is distributed with a plurality of plug-in blocks (209), the outer side of the second connecting disc (202) is distributed with a plurality of plug-in grooves (210), the plug-in block (209) is plugged with the plug-in groove (210), the side surface of the plug-in groove (210) is provided with a fixing frame (211), the inside of the fixing frame (211) penetrates a limiting rod (212), and the outer side of the limiting rod (212) is provided with a spring (213).

2. The gas leak detection apparatus for a gas chromatograph according to claim 1, characterized by: The outer side of the plug-in pipe (206) is distributed with a plurality of sealing clamping rings (207), and the inner wall of the detection pipeline (203) is provided with a clamping groove (208), and the sealing clamping ring (207) is clamped in the clamping groove (208).

3. The gas leak detection apparatus for a gas chromatograph according to claim 1, characterized by: The side surface of the plug-in block (209) is provided with a limiting groove, and one end of the limiting rod (212) is movably connected in the limiting groove.

4. The gas leak detection apparatus for a gas chromatograph according to claim 1, characterized by: The surface of the second connecting disc (202) is provided with a sealing groove (205), and the surface of the first connecting disc (201) is provided with a first sealing ring (204), and the first sealing ring (204) is clamped in the sealing groove (205).

5. The gas chromatograph leak detection apparatus of claim 1, wherein: The side surface of the first connecting disc (201) is connected with one end of the connecting pipe (104), and the plug-in pipe (206) is plugged in the inside of the detection pipeline (203).

6. The gas chromatograph leak detection apparatus of claim 1, wherein: One end of the limiting rod (212) is provided with a handle (214), and the top of the vacuum pump (101) is provided with a pressure gauge (102) and a control switch (103).

7. The gas chromatograph leak detection apparatus of claim 1, wherein: The protection assembly (3) comprises a protection box (301), and the protection box (301) is arranged on the outer side of the vacuum pump (101).

8. The gas leak detection apparatus for a gas chromatograph according to claim 7, characterized by: Ventilation grilles (302) are arranged on the two sides of the protection box (301), and sliding grooves (305) are arranged on the inner side of the protection box (301).

9. The gas leak detection apparatus for a gas chromatograph according to claim 7, characterized by: The top of the protection box (301) is provided with a box cover (303), and the box cover (303) is provided with a light transmission plate (304).

10. The gas leak detection apparatus for a gas chromatograph according to claim 8, characterized by: The drying box (306) is arranged on the side of the ventilation grille (302).

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