Gas detection cabinet

Abstract

The utility model provides a gas detection cabinet, and belongs to the technical field of gas detection. The gas detection cabinet comprises a cabinet body, a gas analyzer and a gas pipeline, and the gas analyzer is mounted in the cabinet body; the gas pipeline is installed in the cabinet body and comprises a gas inlet pipeline, a gas blowing pipeline, a waste gas pipeline and a gas outlet pipeline, the gas inlet pipeline comprises a gas inlet main pipe and a plurality of gas inlet branch pipes which communicate with the gas inlet main pipe and are distributed side by side in the first preset direction, and the gas inlet ends of the gas inlet branch pipes are used for communicating with corresponding gas source equipment; the gas outlet end of the gas blowing pipeline and the gas inlet end of the waste gas pipeline are both communicated with the gas inlet main pipe, the gas outlet end of the gas inlet main pipe is communicated with a gas inlet of the gas analyzer, the gas inlet end of the gas outlet pipeline is communicated with a gas outlet of the gas analyzer, and the first preset direction is perpendicular to the height direction of the cabinet body. The gas detection cabinet can detect various gas source devices without moving, and has the advantages of being convenient to use and high in detection efficiency.

Description

Technical Field

[0001] This application relates to the technical field of gas detection, and more particularly, to a gas detection cabinet. Background Art

[0002] In the prior art, common types of gas detection cabinets can usually only detect a single gas source sample. Under this limitation, when it is necessary to detect multiple gas source devices, the entire gas detection cabinet needs to be moved so that the position of the gas detection cabinet corresponds to the position of the corresponding gas source device. This type of gas detection cabinet has problems such as inconvenient use and low detection efficiency. Summary of the Utility Model

[0003] The purpose of this application is to provide a gas detection cabinet that can detect multiple gas source devices without moving, and has the advantages of convenient use and high detection efficiency.

[0004] The embodiments of this application are implemented as follows:

[0005] The embodiments of this application provide a gas detection cabinet, including a cabinet body, a gas analyzer, and a gas pipeline. The gas analyzer is installed in the cabinet body; the gas pipeline is installed in the cabinet body. The gas pipeline includes an intake pipeline, a blowing pipeline, an exhaust pipeline, and an outlet pipeline. The intake pipeline includes an intake main pipe and a plurality of intake branch pipes that are connected to the intake main pipe and are arranged side by side along a first preset direction. The intake ends of the plurality of intake branch pipes are respectively used to communicate with corresponding gas source devices. The outlet end of the blowing pipeline and the intake end of the exhaust pipeline are both connected to the intake main pipe. The outlet end of the intake main pipe is connected to the intake port of the gas analyzer. The intake end of the outlet pipeline is connected to the outlet port of the gas analyzer. The first preset direction is perpendicular to the height direction of the cabinet body.

[0006] In the above technical solution, the gas pipeline in the gas detection cabinet is composed of an intake pipeline, a blowing pipeline, an exhaust pipeline, and an outlet pipeline. Specifically, the intake pipeline is composed of an intake main pipe and a plurality of intake branch pipes that are connected to the intake main pipe. The intake ends of the plurality of intake branch pipes are respectively used to communicate with corresponding gas source devices. The outlet end of the intake main pipe is connected to the intake port of the gas analyzer. The intake end of the outlet pipeline is connected to the outlet port of the gas analyzer, so that multiple gas source devices can selectively communicate with the analyzer in the gas detection cabinet; at the same time, the outlet end of the blowing pipeline and the intake end of the exhaust pipeline are both connected to the intake main pipe, which can timely remove the residual gas in the intake main pipe after the detection of one gas source device is completed, so as to quickly perform the detection of the next gas source device. By using the gas detection cabinet provided by the embodiments of this application, it is possible to detect multiple gas source devices without moving the gas detection cabinet, and it has the advantages of convenient use and high detection efficiency.

[0007] In some alternative embodiments, in a first preset direction, the plurality of intake branch pipes include a plurality of first intake branch pipes arranged side by side and a plurality of second intake branch pipes arranged side by side. Filters are provided on the first intake branch pipes. The plurality of first intake branch pipes and the plurality of second intake branch pipes are all connected to the intake main pipe, and the plurality of first intake branch pipes and the plurality of second intake branch pipes are respectively located on both sides of the blow pipe line.

[0008] In the above technical solution, the plurality of intake branch pipes are divided into a combination of a plurality of first intake branch pipes and a plurality of second intake branch pipes. Among them, filters are provided on the first intake branch pipes (for purifying the gas source), which can take into account the detection of high / low purity gases, thereby improving the detection compatibility of the gas detection cabinet. In addition, by arranging the plurality of first intake branch pipes and the plurality of second intake branch pipes on both sides of the blow pipe line respectively, the two types of intake branch pipes can be effectively separated, facilitating technicians to distinguish and operate.

[0009] In some alternative embodiments, a manual valve and a one-way valve are connected to each first intake branch pipe and each second intake branch pipe. The intake end of the manual valve is used to communicate with the corresponding gas source device, the outlet end of the one-way valve is connected to the intake main pipe, and the filter of the first intake branch pipe is located between the manual valve and the one-way valve.

[0010] In the above technical solution, one-way valves are provided in each first intake branch pipe and each second intake branch pipe, which can effectively prevent gas backflow.

[0011] In some alternative embodiments, in a first preset direction, the intake ends of the plurality of first intake branch pipes are flush, and / or the intake ends of the plurality of second intake branch pipes are flush.

[0012] In the above technical solution, in a first preset direction, the intake ends of the plurality of first intake branch pipes and the plurality of second intake branch pipes are respectively set to be flush, so that the intake pipe line has the advantages of a relatively regular overall structure and convenient pipeline layout.

[0013] In some alternative embodiments, the intake main pipe includes a first section of intake main pipe located above, a second section of intake main pipe, and a third section of intake main pipe located below, which are connected in sequence. The first section of intake main pipe and the third section of intake main pipe both extend along the same side in the first preset direction, and the second section of intake main pipe extends along the height direction of the cabinet body. The outlet ends of the plurality of intake branch pipes and the outlet end of the blow pipe line are both connected to the first section of intake main pipe, the intake end of the waste gas pipe line is connected to the third section of intake main pipe, and the outlet end of the third section of intake main pipe is connected to the intake port of the gas analyzer.

[0014] In the above technical solution, the main intake pipe is composed of a first main intake pipe located above, a second main intake pipe, and a third main intake pipe located below. Specifically, both the first main intake pipe and the third main intake pipe extend along the same side in the first preset direction, and the second main intake pipe extends along the height direction of the cabinet body, which can effectively utilize the horizontal space inside the cabinet, thereby facilitating the installation of gas pipelines and gas analyzers.

[0015] In some alternative embodiments, in the first preset direction, the second main intake pipe is located below the outlet end of the intake branch pipe closest to the inner wall of the cabinet body.

[0016] In the above technical solution, setting the second main intake pipe below the intake branch pipe closest to the inner wall of the cabinet body can make more full use of the horizontal space inside the cabinet.

[0017] In some alternative embodiments, the gas pipeline is further provided with a vacuum extraction pipeline, and the vacuum extraction pipeline is communicated with the outlet end of the third main intake pipe.

[0018] In the above technical solution, the gas pipeline is additionally provided with a vacuum extraction pipeline communicated with the outlet end of the third main intake pipe. After using the blow gas pipeline to remove the residual gas in the main intake pipe, the main intake pipe is then evacuated through the vacuum extraction pipeline, which can more thoroughly remove the residual gas in the main intake pipe, thereby improving the accuracy of subsequent gas detection.

[0019] In some alternative embodiments, along the direction from intake to outlet, the third main intake pipe is sequentially provided with a connected switch valve, a pressure regulating valve, and a pressure gauge.

[0020] In the above technical solution, on the basis of setting the vacuum extraction pipeline, a switch valve is further set in the third main intake pipe. On the one hand, it can play a role in protecting the pipeline in the case of the failure of the manual valve of the intake branch pipe; on the other hand, it can also serve the purpose of sectional maintenance in case of a failure of the vacuum extraction pipeline.

[0021] In some alternative embodiments, the gas pipeline further includes a protection pipeline. The intake end of the protection pipeline is used to communicate with an inert gas source, and the outlet end of the protection pipeline is communicated with the intake end of the vacuum generator in the vacuum extraction pipeline.

[0022] In the above technical solution, the gas pipeline is additionally provided with a protection pipeline. Specifically, the intake end of the protection pipeline is used to communicate with an inert gas source, and the outlet end of the protection pipeline is communicated with the intake end of the vacuum generator in the vacuum extraction pipeline, which can provide some inert gas during vacuum extraction to play a role in protecting the vacuum generator.

[0023] In some alternative embodiments, in the height direction of the cabinet body, the gas analyzer is located below the gas pipeline, and a transparent window is provided in the area of the cabinet body corresponding to the operation interface of the gas analyzer.

[0024] In the above technical solution, setting the gas analyzer below the gas pipeline has the advantage of facilitating pipeline layout; in addition, setting a transparent window in the area of the cabinet body corresponding to the operation interface of the gas analyzer facilitates intuitively obtaining the detection results, and at the same time, it also facilitates monitoring the operation status of the analyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 Structural schematic diagram of a gas detection cabinet provided by an embodiment of the present application;

[0027] Figure 2 Schematic diagram of a distribution of a gas pipeline and a gas analyzer in a cabinet body provided by an embodiment of the present application;

[0028] Figure 3 For Figure 2 Partial enlarged view of part A in

[0029] Figure 4 For Figure 2 Partial enlarged view of part B in

[0030] Figure 5 For Figure 2 Partial enlarged view of part C in

[0031] Reference numerals: 10 - gas detection cabinet; 100 - cabinet body; 110 - transparent window; 200 - gas analyzer; 300 - gas pipeline; 310 - intake pipeline; 311 - intake main pipe; 3111 - first section of intake main pipe; 3112 - second section of intake main pipe; 3113 - third section of intake main pipe; 3113a - switch valve; 3113b - pressure regulating valve; 3113c - pressure gauge; 312 - intake branch pipe; 3121 - first intake branch pipe; 3121a - manual valve; 3121b - filter; 3121c - check valve; 3122 - second intake branch pipe; 320 - blow-off pipeline; 330 - exhaust pipeline; 340 - outlet pipeline; 350 - vacuum pumping pipeline; 351 - vacuum generator; 360 - protection pipeline; a - first preset direction; b - height direction of the cabinet body. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0034] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0037] The following specifically describes a gas detection cabinet provided by the present application.

[0038] Refer to Figure 1 and Figure 2, an embodiment of the present application provides a gas detection cabinet 10, which includes a cabinet body 100, a gas analyzer 200, and a gas pipeline 300. The gas analyzer 200 is installed inside the cabinet body 100; the gas pipeline 300 is installed inside the cabinet body 100. The gas pipeline 300 includes an intake pipeline 310, a blow pipeline 320, an exhaust pipeline 330, and an outlet pipeline 340. The intake pipeline 310 includes an intake main pipe 311 and a plurality of intake branch pipes 312 that are connected to the intake main pipe 311 and arranged side by side along a first preset direction a. The intake ends of the plurality of intake branch pipes 312 are respectively used to communicate with corresponding gas source devices. The outlet end of the blow pipeline 320 and the intake end of the exhaust pipeline 330 are both connected to the intake main pipe 311. The outlet end of the intake main pipe 311 is connected to the intake port of the gas analyzer 200. The intake end of the outlet pipeline 340 is connected to the outlet port of the gas analyzer 200. The first preset direction a is perpendicular to the height direction b of the cabinet body.

[0039] In the present application, the gas pipeline 300 in the gas detection cabinet 10 is composed of an intake pipeline 310, a blow pipeline 320, an exhaust pipeline 330, and an outlet pipeline 340. Specifically, the intake pipeline 310 is composed of an intake main pipe 311 and a plurality of intake branch pipes 312 that are connected to the intake main pipe 311. The intake ends of the plurality of intake branch pipes 312 are respectively used to communicate with corresponding gas source devices. The outlet end of the intake main pipe 311 is connected to the intake port of the gas analyzer 200. The intake end of the outlet pipeline 340 is connected to the outlet port of the gas analyzer 200, so that multiple gas source devices can selectively communicate with the analyzer in the gas detection cabinet 10; at the same time, the outlet end of the blow pipeline 320 and the intake end of the exhaust pipeline 330 are both connected to the intake main pipe 311, which can timely remove the residual gas in the intake main pipe 311 after the detection of one gas source device is completed, so as to quickly perform the detection of the next gas source device. By using the gas detection cabinet 10 provided by the embodiment of the present application, it is possible to detect multiple gas source devices without moving the gas detection cabinet 10, which has the advantages of convenient use and high detection efficiency.

[0040] It should be noted that in the present application, the intake pipeline 310 and the outlet pipeline 340 are divided based on the criteria of gas entering the gas analyzer 200 and gas leaving the gas analyzer 200.

[0041] It can be understood that in order to achieve pipeline purging without affecting the use of the gas analyzer 200, along the direction from intake to outlet, the blow pipeline 320 is arranged upstream of the exhaust pipeline 330, and the exhaust pipeline 330 is arranged upstream of the gas analyzer 200.

[0042] Refer to Figure 2As an example, in the height direction b of the cabinet, the gas analyzer 200 is located below the gas pipeline 300, and a transparent window 110 is provided in the area of the cabinet 100 corresponding to the control interface of the gas analyzer 200.

[0043] In this embodiment, the gas analyzer 200 is arranged below the gas pipeline 300, which has the advantage of facilitating pipeline layout; in addition, a transparent window 110 is set in the area corresponding to the cabinet 100 and the control interface of the gas analyzer 200, which is convenient for intuitively obtaining the test results and also convenient for monitoring the operating status of the analyzer.

[0044] See also Figure 2 As an example, in the height direction b of the cabinet, the exhaust gas pipeline 330 , the vacuum pipeline 350 , and the gas outlet pipeline 340 all extend along a side away from the gas analyzer 200 .

[0045] In this embodiment, the three pipelines are all extended in a specific direction, which is helpful for pipeline layout and can also make the structure of the entire gas pipeline 300 more regular.

[0046] See also Figure 2 As an example, the top of the cabinet 100 is provided with pipeline installation holes corresponding to various pipelines.

[0047] In this embodiment, the pipeline installation holes are all opened on the top of the cabinet 100, which has the advantage of a more reasonable pipeline layout.

[0048] See also Figure 3 As an example, in the first preset direction a, the multiple air intake branch pipes 312 include multiple first air intake branch pipes 3121 distributed side by side and multiple second air intake branch pipes 3122 distributed side by side, the first air intake branch pipe 3121 is provided with a filter 3121b, the multiple first air intake branch pipes 3121 and the multiple second air intake branch pipes 3122 are all connected to the air intake main pipe 311, and the multiple first air intake branch pipes 3121 and the multiple second air intake branch pipes 3122 are respectively located on both sides of the blowing pipeline 320.

[0049] In this embodiment, the multiple air intake branch pipes 312 are divided into a combination of multiple first air intake branch pipes 3121 and multiple second air intake branch pipes 3122, wherein the first air intake branch pipe 3121 is provided with a filter 3121b (for purifying the gas source), which can realize the detection of high / low purity gases, thereby improving the detection compatibility of the gas detection cabinet 10; in addition, the multiple first air intake branch pipes 3121 and the multiple second air intake branch pipes 3122 are respectively arranged on both sides of the blowing pipeline 320, which can effectively separate the two types of air intake branch pipes 312, thereby facilitating the technicians to distinguish and operate.

[0050] It should be noted that the numbers of the first intake branch pipe 3121 and the second intake branch pipe 3122 are not limited. For example, they can be five respectively.

[0051] In other possible embodiments, in the first preset direction a, the blow-off pipeline 320 can also be arranged at other positions. For example, along the direction from intake to outlet, the blow-off pipeline 320 is arranged at the end of the intake main pipe 311 that is farthest from the gas analyzer 200.

[0052] It should be noted that the form of the intake branch pipe 312 is not limited and can be set according to the conventional selection in the art.

[0053] Refer to Figure 3 , as an example, each first intake branch pipe 3121 and each second intake branch pipe 3122 are respectively provided with a connected manual valve 3121a and a one-way valve 3121c. The intake end of the manual valve 3121a is used to communicate with the corresponding gas source device, the outlet end of the one-way valve 3121c communicates with the intake main pipe 311, and the filter 3121b of the first intake branch pipe 3121 is located between the manual valve 3121a and the one-way valve 3121c.

[0054] In this embodiment, a one-way valve 3121c is provided in each of the first intake branch pipes 3121 and the second intake branch pipes 3122, which can effectively prevent gas backflow.

[0055] It should be noted that the difference between the first intake branch pipe 3121 and the second intake branch pipe 3122 is only that a filter 3121b is additionally provided between the manual valve 3121a and the one-way valve 3121c of the first intake branch pipe 3121.

[0056] Refer to Figure 3 , as an example, the blow-off pipeline 320 is provided with a connected manual valve 3121a and a one-way valve 3121c. The intake end of the manual valve 3121a is used to communicate with the corresponding gas source device (for providing a high-purity inert atmosphere), and the outlet end of the one-way valve 3121c communicates with the intake main pipe 311.

[0057] It should be noted that the difference between the blow-off pipeline 320 and the second intake branch pipe 3122 is only that the gas source devices corresponding to the one-way valves 3121c of the two are different.

[0058] Refer to Figure 3 , as an example, in the first preset direction a, the intake ends of the multiple first intake branch pipes 3121 are flush, and / or the intake ends of the multiple second intake branch pipes 3122 are flush.

[0059] In this embodiment, in the first preset direction a, the intake ends of a plurality of first intake branch pipes 3121 and a plurality of second intake branch pipes 3122 are respectively arranged in a flush manner, so that the intake pipeline 310 has the advantages of a relatively regular overall structure and convenient pipeline layout.

[0060] It should be noted that the specific orientation of the main intake pipe 311 is not limited and can be adjusted according to actual needs.

[0061] Refer to Figure 3 and Figure 4 , as an example, the main intake pipe 311 includes a first-stage main intake pipe 3111 located above, a second-stage main intake pipe 3112, and a third-stage main intake pipe 3113 located below, which are connected in sequence. The first-stage main intake pipe 3111 and the third-stage main intake pipe 3113 both extend along the same side in the first preset direction a, and the second-stage main intake pipe 3112 extends along the height direction b of the cabinet body; the outlet ends of a plurality of intake branch pipes 312 and the outlet end of the blow pipe 320 are both connected to the first-stage main intake pipe 3111, the intake end of the exhaust pipe 330 is connected to the third-stage main intake pipe 3113, and the outlet end of the third-stage main intake pipe 3113 is connected to the intake port of the gas analyzer 200.

[0062] In this embodiment, the main intake pipe 311 is composed of a first-stage main intake pipe 3111 located above, a second-stage main intake pipe 3112, and a third-stage main intake pipe 3113 located below. Specifically, the first-stage main intake pipe 3111 and the third-stage main intake pipe 3113 both extend along the same side in the first preset direction a, and the second-stage main intake pipe 3112 extends along the height direction b of the cabinet body, which can effectively utilize the horizontal space inside the cabinet body 100, thereby facilitating the installation of the gas pipeline 300 and the gas analyzer 200.

[0063] As an example, in the first preset direction a, the second-stage main intake pipe 3112 is located below the outlet end of the intake branch pipe 312 closest to the inner wall of the cabinet body 100.

[0064] In this embodiment, by arranging the second-stage main intake pipe 3112 below the intake branch pipe 312 closest to the inner wall of the cabinet body 100 (i.e., the intake branch pipe 312 closest to the inner wall of the cabinet body 100), the horizontal space inside the cabinet body 100 can be utilized more fully.

[0065] Refer to Figure 5 , as an example, the gas pipeline 300 is further provided with a vacuum pumping pipeline 350, and the vacuum pumping pipeline 350 is connected to the outlet end of the third-stage main intake pipe 3113.

[0066] In this embodiment, a vacuum pumping pipeline 350 is added to the gas pipeline 300 and is connected to the outlet end of the third-stage intake main pipeline 3113. After using the blowing pipeline 320 to remove the residual gas in the intake main pipeline 311, the intake main pipeline 311 is evacuated through the vacuum pumping pipeline 350, which can more thoroughly remove the residual gas in the intake main pipeline 311, thereby improving the accuracy of subsequent gas detection.

[0067] It should be noted that the form of the vacuum pumping pipeline 350 is not limited and can be set according to the conventional selection in the art. For example, the vacuum pumping pipeline 350 includes a switch valve 3113a, a pressure gauge 3113c, and a vacuum generator 351 that are connected in sequence. The intake end of the switch valve 3113a is connected to the outlet end of the third-stage intake main pipeline 3113.

[0068] Refer to Figure 5 , as an example, the gas pipeline 300 further includes a protection pipeline 360. The intake end of the protection pipeline 360 is used to be connected to an inert gas source, and the outlet end of the protection pipeline 360 is connected to the intake end of the vacuum generator 351 in the vacuum pumping pipeline 350.

[0069] In this embodiment, a protection pipeline 360 is added to the gas pipeline 300. Specifically, the intake end of the protection pipeline 360 is used to be connected to an inert gas source, and the outlet end of the protection pipeline 360 is connected to the intake end of the vacuum generator 351 in the vacuum pumping pipeline 350, which can provide some inert gas during vacuum pumping to protect the vacuum generator 351.

[0070] Refer to Figure 4 , as an example, along the direction from intake to outlet, the third-stage intake main pipeline 3113 is sequentially provided with a connected switch valve 3113a, a pressure regulating valve 3113b, and a pressure gauge 3113c.

[0071] In this embodiment, on the basis of setting the vacuum pumping pipeline 350, a switch valve 3113a is further provided in the third-stage intake main pipeline 3113. On the one hand, it can protect the pipeline 360 in the case of the failure of the manual valve 3121a of the intake branch pipeline 312; on the other hand, it can also serve the purpose of sectional maintenance when the vacuum pumping pipeline 350 fails.

[0072] It should be noted that the relative positional relationship between the gas analyzer 200 and the gas pipeline 300 in the cabinet 100 is not limited and can be adjusted according to actual needs.

[0073] It should be noted that the structures or functional units in the gas detection cabinet 10 that are not specifically described or limited can be set according to the conventional selection in the art.

[0074] Refer to Figure 2, as an example, a switching valve 3113a is further provided between the outlet end of the third intake main pipe 3113 and the intake port of the gas analyzer 200.

[0075] Refer to Figure 2 , as an example, the outlet pipe 340 is provided with a connected switching valve 3113a and a check valve 3121c. The intake end of the switching valve 3113a is communicated with the outlet of the gas analyzer 200.

[0076] To better understand the technical solution of the present application, a specific usage scenario is described herein for auxiliary explanation.

[0077] When it is necessary to detect the gas in two gas source devices, first connect the first intake branch pipe 312 to the gas analyzer 200. After the detection is completed, start the blow pipe 320 and the waste pipe 330 simultaneously to purge the intake main pipe 311 in order to remove the residual gas in the intake main pipe 311. After the purging is completed, start the vacuum pumping pipe 350 to pump the intake main pipe 311 to vacuum in order to further remove the residual gas in the intake main pipe 311. At the same time, start the protection pipe 360 to protect the vacuum generator 351 in the vacuum pumping pipe 350 during the vacuum pumping process. After the vacuum pumping is completed, connect the second intake branch pipe 312 to the gas analyzer 200 for detection.

[0078] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas detection cabinet, characterized in that, Comprising: Cabinet body; Gas analyzer, which is installed in the cabinet body; Gas pipeline, which is installed in the cabinet body. The gas pipeline includes an intake pipeline, a blow pipeline, an exhaust pipeline and an outlet pipeline. The intake pipeline includes an intake main pipe and a plurality of intake branch pipes that are communicated with the intake main pipe and are arranged side by side along a first preset direction. The intake ends of the plurality of intake branch pipes are respectively used to communicate with corresponding gas source devices. The outlet end of the blow pipeline and the intake end of the exhaust pipeline are both communicated with the intake main pipe. The outlet end of the intake main pipe is communicated with the intake port of the gas analyzer. The intake end of the outlet pipeline is communicated with the outlet port of the gas analyzer. The first preset direction is perpendicular to the height direction of the cabinet body.

2. The gas detection cabinet according to claim 1, characterized in that, In the first preset direction, the plurality of intake branch pipes include a plurality of first intake branch pipes arranged side by side and a plurality of second intake branch pipes arranged side by side. The first intake branch pipes are provided with filters. The plurality of first intake branch pipes and the plurality of second intake branch pipes are both communicated with the intake main pipe. The plurality of first intake branch pipes and the plurality of second intake branch pipes are respectively located on both sides of the blow pipeline.

3. The gas detection cabinet according to claim 2, wherein, Each first intake branch pipe and each second intake branch pipe are both provided with a connected manual valve and a one-way valve. The intake end of the manual valve is used to communicate with the corresponding gas source device. The outlet end of the one-way valve is communicated with the intake main pipe. The filter of the first intake branch pipe is located between the manual valve and the one-way valve.

4. The gas detection cabinet according to claim 2, wherein, In the first preset direction, the intake ends of the plurality of first intake branch pipes are flush, and / or the intake ends of the plurality of second intake branch pipes are flush.

5. The gas detection cabinet according to any one of claims 1 to 4, characterized in that, The intake main pipe includes a first section intake main pipe located above, a second section intake main pipe and a third section intake main pipe located below that are sequentially communicated. The first section intake main pipe and the third section intake main pipe both extend along the same side in the first preset direction. The second section intake main pipe extends along the height direction of the cabinet body. The outlet ends of the plurality of intake branch pipes and the outlet end of the blow pipeline are both communicated with the first section intake main pipe. The intake end of the exhaust pipeline is communicated with the third section intake main pipe. The outlet end of the third section intake main pipe is communicated with the intake port of the gas analyzer.

6. The gas detection cabinet according to claim 5, characterized in that, In the first preset direction, the second section intake main pipe is located below the outlet end of the intake branch pipe that is closest to the inner wall of the cabinet body.

7. The gas detection cabinet according to claim 5, wherein The gas pipeline is further provided with a vacuum pumping pipeline, which is communicated with the outlet end of the third section intake main pipe.

8. The gas detection cabinet according to claim 7, characterized in that, Along the direction from intake to outlet, the third section intake main pipe is sequentially provided with a connected switch valve, a pressure regulating valve and a pressure gauge.

9. The gas detection cabinet according to claim 7, wherein The gas pipeline further includes a protection pipeline. The intake end of the protection pipeline is used to communicate with an inert gas source. The outlet end of the protection pipeline is communicated with the intake end of a vacuum generator in the vacuum pumping pipeline.

10. The gas detection cabinet according to any one of claims 1 to 4, characterized in that, In the height direction of the cabinet body, the gas analyzer is located below the gas pipeline, and a transparent window is provided in the area of the cabinet body corresponding to the operation interface of the gas analyzer.

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