Gas detection equipment

Abstract

The utility model provides gas detection equipment. The gas detection equipment comprises a sampling device and a detection device, the sampling device comprises a sampling pipe and a plug. The sampling pipe is provided with a gas pipe body and a heat tracing piece extending in the same direction as the gas pipe body. The plug is arranged at one end of the sampling pipe, and a gas pipe joint communicated with the gas pipe main body and a power receiving end electrically connected with the heat tracing piece are fixed on the plug. The detection device comprises a detector, a box body and a socket. A containing cavity for containing a detector is defined by the box body, and a sample inlet is formed in the box body. The socket is fixed in the accommodating cavity in a manner of corresponding to the sample inlet, and is fixedly provided with a power supply end and an air pipe channel communicated with the detector. And the plug and the socket are matched and plugged in a manner of synchronously finishing alignment of the power supply end and the power receiving end and alignment of the air pipe joint and the air pipe channel.

Description

Technical Field

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

[0002] The prior art provides a gas detection device, which includes a split sampling device and a detection device. The sampling device is used to heat and transport the sample gas (i.e., during the transportation process, the sample gas is heated and the temperature is controlled), and the detection device is used to detect and analyze the sample gas. When performing gas detection, the sampling device is connected to the detection device to transport the sample gas into the detection device, and draws power from the detection device to operate the heating element.

[0003] For example, in the prior art document CN108614050A, a sampling tube bundle including a connector assembly 200 is provided. The connector assembly 200 mainly includes a tube bundle connector 210, a gas circuit connector 220 and a circuit connector 230. Among them, the tube bundle connector 210 is connected to the end of the tube bundle body 100, and part of its connector structure is fixed between the fireproof layer 160 and the insulation layer 170 at the end of the tube bundle body 100. The gas circuit connector 220 is arranged on the tube bundle connector 210 and connected to the gas sampling tube 110 of the tube bundle body 100, so as to be connected to the gas circuit interface of the analysis device or the sampling device. The circuit connector 230 is arranged on the tube bundle connector 210 and electrically connected to the signal transmission line 150 of the tube bundle body 100, so as to be connected to the circuit interface of the analysis device or the sampling device.

[0004] However, in the sampling device in the prior art, the gas circuit and the circuit need to be connected separately, and the gas circuit joint needs to be locked and sealed by tightening the bolts, which makes the connection process between the sampling device and the detection device more complicated.

[0005] Therefore, the gas detection equipment provided by the prior art has the problem that the gas path and the circuit of the sampling device need to be connected to the detection device respectively, which makes the whole connection process more complicated. Utility Model Content

[0006] The utility model aims to provide a cabinet so as to solve the problem in the prior art that the connection process between the sampling device and the detection device is relatively complicated.

[0007] The first aspect of the utility model provides a gas detection device, including a sampling device and a detection device. The sampling device includes a sampling tube and a plug. The sampling tube has an air tube body and a heating element extending in the same direction as the air tube body. The plug is arranged at one end of the sampling tube, and the plug is fixed with an air tube joint connected to the air tube body, and a power receiving end electrically connected to the heating element. The detection device includes a detector, a box body and a socket. The box body encloses a receiving cavity for accommodating the detector, and is provided with an injection port. The socket is fixed in the receiving cavity in a form corresponding to the injection port, and is fixed with a power supply end and an air tube channel connected to the detector. The plug and the socket are matched and plugged in in a manner that the alignment of the power supply end and the power receiving end, and the alignment of the air tube joint and the air tube channel are completed synchronously.

[0008] According to the technical solution provided by the utility model, by providing a plug fixed with an air pipe joint and a power receiving end, and a socket matched with the plug, the air circuit and the circuit of the sampling device can be connected to the detection device at the same time, that is, the air circuit and the circuit of the sampling device and the detection device can be synchronously connected through only one plug-in action, which simplifies the connection process and is conducive to improving the working efficiency of gas detection work.

[0009] In the gas detection device provided by the optional technical solution of the utility model, the power receiving end is arranged around the gas pipe joint.

[0010] According to this optional technical solution, the power receiving end can, to a certain extent, assist in fixing the tracheal joint and provide protection for part of the tracheal joint. In addition, by setting the power receiving end around the tracheal joint, it is also helpful to ensure the synchronous alignment of the power supply end and the power receiving end, as well as the alignment of the tracheal joint and the tracheal channel. Moreover, since the power receiving end surrounds the tracheal joint, it can also, to a certain extent, play a role in keeping the sample gas in the tracheal joint warm, which is helpful to improve the uniformity of the sample gas composition, thereby improving the reliability of the detection results.

[0011] In the gas detection device provided by the optional technical solution of the utility model, the box body has a box body plate defining the sample inlet. The detection device also includes a cabinet for accommodating the box body, and the cabinet has a cabinet plate defining the interface. The cabinet plate and the box body plate are arranged at a relative interval, and the sample inlet and the interface are arranged correspondingly. The plug is matched and plugged with the socket through the interface and the sample inlet.

[0012] According to this optional technical solution, by providing a cabinet for accommodating the box, protection can be provided for the box accommodating the detector, so that the gas detection device can adapt to a variety of different detection environments, such as outdoor detection environments. Since the cabinet is provided with an interface corresponding to the sample inlet, the user can connect the sampling device to the detection device without opening the cover of the cabinet.

[0013] In the gas detection equipment provided by the optional technical solution of the utility model, the detection device also includes a hollow connector, the hollow connector has an interface connection end and an injection port connection end, and the plug passes through the hollow connector and is matched with the socket.

[0014] According to this optional technical solution, by providing a hollow connector, a channel for the plug to pass through can be formed between the interface and the injection port. The channel has a guiding function, which is conducive to improving the efficiency of the alignment of the plug and the socket. In addition, the channel also has a certain heat preservation function, avoiding excessive loss of temperature of the sample gas in the air pipe between the interface and the injection port, which causes uneven sample gas composition and large errors in the detection results.

[0015] In the gas detection device provided by the optional technical solution of the utility model, the detection device also includes a first sealing ring arranged between the interface connection end and the cabinet plate, and a second sealing ring arranged inside the interface connection end. The plug is matched and plugged with the socket in the form of passing through and abutting against the second sealing ring.

[0016] According to this optional technical solution, by providing a first sealing ring, it is possible to effectively prevent debris such as water or dust from reaching the interface through the gap between the interface connection end and the cabinet plate, and from entering the cabinet from the interface, thereby facilitating the normal operation of the components inside the cabinet. By providing a second sealing ring, it is possible to effectively prevent debris such as water or dust from entering through the gap between the interface connection end and the plug, thereby facilitating the stable electrical connection between the power receiving end on the plug and the socket.

[0017] In the gas detection device provided by the optional technical solution of the utility model, the socket is fixed in the accommodating cavity by being connected to the injection port connection end.

[0018] According to this optional technical solution, since the socket is fixed in the accommodating cavity by means of a hollow connector, it can be ensured that the socket is positioned corresponding to the injection port and the socket is more stably maintained in this position so that the plug can be more accurately matched and plugged into the socket.

[0019] In the gas detection device provided by the optional technical solution of the utility model, the injection port connection end is a first nut sleeved on the socket, and the interface connection end is a second nut that cooperates with the first nut and abuts against the cabinet plate.

[0020] According to this optional technical solution, by tightening the second nut onto the first nut, the first sealing ring is pressed as a whole against the outer surface of the cabinet plate 51 while fixing the socket, thereby achieving sealing between the second nut and the cabinet plate.

[0021] In the gas detection device provided by the optional technical solution of the utility model, a heating element is arranged in the box body, and the connecting end of the sampling port is in surface contact with the box body plate.

[0022] According to this optional technical solution, the heat on the box plate can be transferred to the injection port connection end, thereby providing heat for the plug passing through the hollow connector, playing a role in keeping the sample gas in the trachea joint warm, which is beneficial to improving the uniformity of the sample gas composition, thereby improving the reliability of the detection results.

[0023] In the gas detection device provided by the optional technical solution of the utility model, the detection device also includes a transition gas pipe and a gas pipe conversion joint. The transition gas pipe is connected to the socket and communicated with the gas pipe channel. The gas pipe conversion joint is connected to the transition gas pipe and communicated with the detector.

[0024] According to this optional technical solution, by providing a transition air pipe and an air pipe conversion joint, the socket can be matched with a variety of different detector flow paths, that is, it can be suitable for a variety of different detectors, which is conducive to improving the versatility of the socket and further broadening the application scenarios of the gas detection equipment.

[0025] In the gas detection device provided by the optional technical solution of the utility model, the gas detection device is a portable gas chromatograph.

[0026] According to this optional technical solution, the gas detection device can be applied to a variety of different detection environments including outdoor environments, and can perform detection work stably and reliably in different detection environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram showing the separation of the sampling device and the detection device in the embodiment of the present application is shown;

[0028] Figure 2 A schematic diagram showing the connection between the sampling device and the detection device in an embodiment of the present application is shown;

[0029] Figure 3 A schematic diagram of a gas detection device in an embodiment of the present application is shown;

[0030] Figure 4 A schematic diagram showing the connection between the sampling device and the detection device in an embodiment of the present application is shown.

[0031] Figure numerals: gas detection equipment 300, sampling device 100, sampling tube 1, air pipe body 11, heating element 12, plug 2, air pipe joint 21, power receiving end 22, detection device 200, detector 9, box body 3, box plate 31, sampling port 311, socket 4, power supply end 41, air pipe channel 42, cabinet 5, cabinet plate 51, interface 511, interface connection end 61, sampling port connection end 62, first sealing ring 71, second sealing ring 72, transition air pipe 81, air pipe conversion joint 82. DETAILED DESCRIPTION

[0032] It should be noted that the working principle, characteristics and advantages of the gas detection equipment according to the present application will be explained in an illustrative manner below, but it should be understood that all descriptions are given for illustrative purposes only and should not be construed as forming any limitations on the present application.

[0033] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature displayed or implied in the accompanying drawings, the present application still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned in this document.

[0034] The gas detection device 300 in the embodiment of the present application, refer to Figure 1 , Figure 2 and Figure 3 , including a sampling device 100 and a detection device 200.

[0035] The sampling device 100 includes a sampling tube 1 and a plug 2. The sampling tube 1 has an air pipe body 11 and a heating element 12 extending in the same direction as the air pipe body 11. The plug 2 is arranged at one end of the sampling tube 1, and the plug 2 is fixed with an air pipe joint 21 connected to the air pipe body 11 and a power receiving end 22 electrically connected to the heating element 12.

[0036] The detection device 200 includes a detector 9, a housing 3 and a socket 4. The housing 3 is enclosed to form a housing cavity for accommodating the detector 9, and is provided with an injection port 311. The socket 4 is fixed in the housing cavity in a manner corresponding to the injection port 311, and is fixed with a power supply terminal 41 and an air pipe passage 42 connected to the detector 9. The plug 2 and the socket 4 are matched and plugged in a manner that the power supply terminal 41 and the power receiving terminal 22 are aligned, and the air pipe joint 21 and the air pipe passage 42 are aligned synchronously.

[0037] "Alignment" refers to the alignment of positions, that is, moving the two parts that are plugged into each other to a state where they can be plugged in by moving toward each other. The plug 2 and the socket 4 can synchronously complete the alignment of the power supply end 41 and the power receiving end 22, as well as the alignment of the air pipe joint 21 and the air pipe channel 42. In other words, the relative position relationship between the air pipe joint 21 and the power receiving end 22 is the same as the relative position relationship between the gas channel 42 and the power supply end 41. For example, if the power receiving end 22 is concentrically surrounded by the outer periphery of the air pipe joint 21, the power supply end 41 should also be concentrically surrounded by the outer periphery of the gas channel 42; if the power receiving end 22 is located 1 cm above the air pipe joint 21, the power supply end 41 should also be located 1 cm above the gas channel 42 to ensure the synchronization of the alignment.

[0038] The plug 2 fixed with the air pipe connector 21 and the power receiving end 22 means that the air pipe connector 21 and the power receiving end 22 are stably fixed at specific positions on the plug 2 body in a form in which the air pipe connector 21 and the power receiving end 22 as a whole are basically unable to move relative to the plug 2 body, so as to form an integrated plug 2 with the air pipe connector 21 and the power receiving end 22.

[0039] There is no particular limitation on the positional relationship between the air pipe connector 21 and the power receiving terminal 22 on the integrated plug 2. They may be in a parallel positional relationship or in a surrounding positional relationship.

[0040] In a preferred embodiment, the power receiving end 22 is arranged around the trachea connector 21. In this way, the power receiving end 22 can, to a certain extent, play a role in assisting in fixing the trachea connector 21 and providing protection for part of the trachea connector 21. In addition, by setting the power receiving end 22 around the trachea connector 21, it is also helpful to ensure that the power supply end 41 and the power receiving end 22 are aligned, and the trachea connector 21 and the trachea passage 42 are aligned synchronously. Moreover, since the power receiving end 22 surrounds the trachea connector 21, it can also, to a certain extent, play a role in keeping the sample gas in the trachea connector 21 warm, which is helpful to improve the uniformity of the sample gas composition, thereby improving the reliability of the detection results.

[0041] The socket 4 is fixed with a power supply end 41 that can be aligned with the power receiving end 22 of the plug 2, and an air pipe channel 42 that can be aligned with the air pipe joint 21 of the plug 2. As long as it can achieve matching and plugging with the integrated plug 2, there is no particular limitation on the specific structure of the socket 4. For example, the socket 4 can be composed of an integral component, or it can be composed of two separate components that are fixed in relative positions.

[0042] By providing an integrated plug 2 fixed with an air pipe connector 21 and a power receiving end 22, and a socket 4 matched with the integrated plug 2, the air circuit and the circuit of the sampling device 100 can be connected to the detection device 200 at the same time, that is, the air circuit and the circuit of the sampling device 100 and the detection device 200 can be synchronously connected through only one plug-in action, thereby simplifying the connection process and helping to improve the working efficiency of gas detection work.

[0043] Figure 1 FIG. 1 shows a schematic diagram of the sampling device 100 and the detection device 200 when they are separated in the embodiment of the present application. Figure 2A schematic diagram of the connection between the sampling device 100 and the detection device 200 in an embodiment of the present application is shown. In the illustrated embodiment, a power supply terminal 41 is provided on one side of the socket 4 close to the injection port 311, and an air pipe channel 42 extending in a direction close to / away from the injection port 311 is provided. After the sampling device 100 enters the injection port 311, its air pipe connector 21 is aligned with the air pipe channel 42 and extends into the air pipe channel 42 to connect the sampling device 100 and the detector 9, thereby realizing the delivery of the sample gas from the air pipe body 11 to the detector 9. At the same time, the power receiving end 22 of the sampling device 100 is aligned with and in contact with the power supply terminal 41 to supply power to the heating element 12. It can be understood that the socket 4 can be connected to an external power source by being connected to a control circuit board of the device, so that the heating element 12 can be supplied with power.

[0044] In some embodiments, reference Figure 1 and Figure 4 , the box body 3 has a box body plate 31 that defines an injection port 311. The detection device 200 also includes a cabinet 5 that accommodates the box body 3, and the cabinet 5 has a cabinet plate 51 that defines an interface 511. The cabinet plate 51 is arranged relative to the box body plate 31, and the injection port 311 is arranged corresponding to the interface 511. The plug 2 is matched and plugged with the socket 4 through the interface 511 and the injection port 311. By setting up a cabinet 5 that accommodates the box body 3, protection can be provided for the box body 3 containing the detector 9, so that the gas detection equipment 300 can adapt to a variety of different detection environments, for example, it can adapt to outdoor detection environments. Since the cabinet 5 is provided with an interface 511 corresponding to the injection port 311, the user can connect the sampling device 100 to the detection device 200 without opening the cover of the cabinet 5.

[0045] In some embodiments, reference Figure 4 , the detection device 200 also includes a hollow connector, the hollow connector has an interface connection end 61 and an injection port connection end 62, and the plug 2 passes through the hollow connector and contacts the socket 4. The hollow connector refers to a component that is connected between the interface 511 and the injection port 311, and allows the plug 2 to pass through the middle. By providing a hollow connector, a channel for the plug 2 to pass through can be formed between the interface 511 and the injection port 311. The channel has a guiding function, which is beneficial to improving the efficiency of the alignment of the plug 2 and the socket 4. In addition, the channel also has a certain heat preservation function, which avoids excessive loss of temperature of the sample gas in the trachea between the interface 511 and the injection port 311, which causes problems such as uneven sample gas composition and large errors in detection results.

[0046] In some embodiments, reference Figure 4, the detection device 200 also includes a first sealing ring 71 disposed between the interface connection end 61 and the cabinet plate 51, and a second sealing ring 72 disposed inside the interface connection end 61. The plug 2 is matched and plugged with the socket 4 in the form of passing through and abutting against the second sealing ring 72. By providing the first sealing ring 71, it is possible to effectively prevent debris such as water or dust from reaching the interface 511 from the gap between the interface connection end 61 and the cabinet plate 51, and from entering the cabinet 5 from the interface 511, thereby facilitating the normal operation of the components inside the cabinet 5. By providing the second sealing ring 72, it is possible to effectively prevent debris such as water or dust from entering from the gap between the interface connection end 61 and the plug 2, thereby facilitating the stable electrical connection between the power receiving end 22 on the plug 2 and the socket 4.

[0047] In some embodiments, reference Figure 4 The socket 4 is fixed in the accommodating cavity by connecting to the injection port connection end 62. Since the socket 4 is fixed in the accommodating cavity by using a hollow connector, it can ensure that the socket 4 is set at a position corresponding to the injection port 311, and the socket 4 is kept in the position more stably, so that the plug 2 can be more accurately matched and plugged with the socket 4.

[0048] In some embodiments, reference Figure 4 , the injection port connection end 62 is a first nut sleeved on the socket 4, and the interface connection end 61 is a second nut matched with the first nut and abutted against the cabinet plate 51. Specifically, one end of the first nut is sleeved on the socket 4, and the inner side of the other end is provided with a thread. The outer side of one end of the second nut is provided with a thread matched with the first nut, and the other end is abutted against the outer surface of the cabinet plate 51. By tightening the second nut to the first nut, while fixing the socket 4, the first sealing ring 71 is pressed as a whole against the outer surface of the cabinet plate 51, so as to achieve effective sealing between the second nut and the cabinet plate 51.

[0049] The hollow connector in the present application is not limited to the hollow connector composed of the first nut and the second nut. As long as it can be connected between the interface 511 and the injection port 311 and allow the plug 2 to pass through the middle, it is within the technical scope of the present application.

[0050] In some embodiments, the box body 3 is a column temperature box, a heating element (not shown) is provided in the box body 3, and the injection port connection end 62 is in surface contact with the box body plate 31. Since a heating element is provided in the box body 3, and the injection port connection end 62 is in surface contact with the box body plate 31, the heat on the box body plate 31 can be transferred to the injection port connection end 62, so that heat can be provided for the plug 2 passing through the hollow connector, which plays a role in keeping the sample gas in the trachea joint 21 warm, which is beneficial to improve the uniformity of the sample gas composition, thereby improving the reliability of the detection result.

[0051] In some embodiments, the detection device 200 further includes a transition air pipe 81 and an air pipe conversion joint 82. The transition air pipe 81 is connected to the socket 4 and communicates with the air pipe channel 42. The air pipe conversion joint 82 is connected to the transition air pipe 81 and communicates with the detector 9. By providing the transition air pipe 81 and the air pipe conversion joint 82, the socket 4 can be matched with a variety of different detector 9 flow paths, that is, it can be applied to a variety of different detectors 9, which is conducive to improving the versatility of the socket 4, thereby broadening the application scenarios of the gas detection device 300.

[0052] In some embodiments, reference Figure 3 The gas detection device 300 is a portable gas chromatograph. Of course, the present application is not limited thereto, and any gas detection device 300 that can collect sample gas and provide heat preservation and heating for the sample gas is within the technical scope of the present application.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas detection device, comprising a sampling device and a detection device, characterized in that: The sampling device comprises: The sampling tube comprises an air tube body and a heating element extending in the same direction as the air tube body; A plug is arranged at one end of the sampling tube, the plug is fixed with an air pipe joint communicated with the air pipe body, and a power receiving end electrically connected to the heating element; The detection device comprises: Detector; A box body, enclosing a housing cavity for accommodating the detector and provided with an injection port; A socket is fixed in the accommodating cavity in a manner corresponding to the injection port, and is fixed with a power supply end and an air pipe channel connected to the detector; The plug and the socket are matched and plugged in a manner that the power supply end and the power receiving end are aligned, and the air pipe joint and the air pipe channel are aligned simultaneously.

2. The gas detection device according to claim 1, characterized in that: The power receiving end is arranged around the air pipe joint.

3. The gas detection device according to claim 1, characterized in that: The housing has a housing plate defining the injection port, The detection device further comprises a cabinet for accommodating the box body, the cabinet having a cabinet plate defining an interface, the cabinet plate and the box body plate are arranged relative to each other and spaced apart, and the sample inlet is arranged corresponding to the interface. The plug is matched and plugged with the socket through the interface and the injection port.

4. The gas detection device according to claim 3, characterized in that: The detection device also includes a hollow connector having an interface connection end and an injection port connection end. The plug passes through the hollow connector and is matched and plugged with the socket.

5. The gas detection device according to claim 4, characterized in that: The detection device also includes a first sealing ring arranged between the interface connection end and the cabinet plate, and a second sealing ring arranged inside the interface connection end. The plug is plugged into the socket in a manner of passing through and abutting against the second sealing ring.

6. The gas detection device according to claim 5, characterized in that: The socket is fixed in the accommodating cavity by being connected to the injection port connecting end.

7. The gas detection device according to claim 5, characterized in that: The injection port connection end is a first nut sleeved on the socket, and the interface connection end is a second nut matched with the first nut and abutted against the cabinet plate.

8. The gas detection device according to claim 4, characterized in that: A heating element is arranged in the box body, and the injection port connection end is in surface contact with the box body plate.

9. The gas detection device according to claim 1, characterized in that: The detection device also includes: A transition air pipe connected to the socket and communicated with the air pipe passage; The air pipe conversion joint is connected to the transition air pipe and communicated with the detector.

10. The gas detection device according to any one of claims 1 to 9, characterized in that: The gas detection equipment is a portable gas chromatograph.

Images