Sampling device and gas preparation system

Abstract

The utility model discloses a sampling device and a gas preparation system, the sampling device comprises a transportation shell, a sampling container and a sampling pipeline, an accommodating cavity is formed in the transportation shell, the transportation shell is provided with a gas inlet joint and a gas outlet joint, and the transportation shell is provided with a walking mechanism; the sampling container is arranged in the accommodating cavity; the sampling pipeline is arranged in the containing cavity and comprises an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is connected with the air inlet end of the sampling container and the air inlet connector, and the air outlet pipeline is connected with the air outlet end of the sampling container and the air outlet connector. According to the technical scheme, the operation convenience and the protection performance of the sampling device are improved, and the practicability and the reliability of the sampling device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas preparation, in particular to a sampling device and a gas preparation system. Background Art

[0002] In existing gas preparation systems, when the preparation device generates gas through processes such as electrolysis or dissolution, operators are usually required to sample and test the produced gas to ensure that the produced gas meets production standards and requirements before storing the produced gas to ensure the stable operation of the gas preparation system.

[0003] However, in the operation of the existing gas preparation system, the operator usually directly carries the sampling gas cylinder to the preparation device, connects the sampling gas cylinder and the preparation device with a pipeline, and then carries the sampling gas cylinder to the detection equipment for gas detection after the produced gas is filled into the sampling gas cylinder. However, the sampling gas cylinder is heavy, and manual transportation requires a lot of physical strength, and the transportation process is time-consuming and laborious; and during the transportation and placement of the sampling gas cylinder, the sampling gas cylinder is mostly directly exposed to the outside, which makes the sampling gas cylinder prone to collision damage and gas leakage, posing certain safety hazards. Utility Model Content

[0004] The main purpose of the utility model is to provide a sampling device and a gas preparation system, aiming to sample the produced gas using a sampling device that integrates a sampling container and a transport shell, which can effectively improve the operating convenience and protection performance of the sampling device, and improve the practicality and reliability of the sampling device.

[0005] To achieve the above-mentioned purpose, the sampling device proposed in the utility model includes a transport shell, a sampling container and a sampling pipeline, a accommodating cavity is formed in the transport shell, the transport shell is provided with an air inlet connector and an air outlet connector, and the transport shell is provided with a walking mechanism; the sampling container is arranged in the accommodating cavity; the sampling pipeline is arranged in the accommodating cavity, the sampling pipeline includes an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is connected to the air inlet end of the sampling container and the air inlet connector, and the air outlet pipeline is connected to the air outlet end of the sampling container and the air outlet connector.

[0006] Optionally, the transport shell is provided with a diffusion port communicating with the accommodating cavity, and the transport shell is provided with a seal, and the seal is used to open or close the diffusion port.

[0007] Optionally, the diffusion port is opened on the top surface of the transport shell, and the sealing member is a sealing cover plate, which is movably connected to the top surface of the transport shell and opens or covers the diffusion port.

[0008] Optionally, the air inlet connector includes a first air inlet connector and a second air inlet connector, and the air inlet pipeline includes an air inlet main pipe and an air inlet branch pipe, the air inlet main pipe connects the first air inlet connector and the air inlet end of the sampling container; the air inlet branch pipe is connected to the air inlet main pipe and connected to the second air inlet connector. And / or, an air inlet stop valve is provided on the air inlet pipeline, and the air inlet stop valve is provided near the air inlet connector. And / or, a gas purification mechanism is provided on the air inlet pipeline, and the gas purification mechanism is used to purify the gas in the air inlet pipeline. And / or, a flexible coil is provided on the air inlet pipeline. And / or, a check valve is also provided on the air outlet pipeline, and the check valve is provided near the air outlet connector.

[0009] Optionally, a pressure regulating valve is provided on the gas outlet pipeline, and the pressure regulating valve is arranged close to the gas outlet end of the sampling container.

[0010] Optionally, a safety valve is further provided on the pipeline, and the safety valve is provided between the pressure regulating valve and the gas outlet connector. The transport shell is also provided with a pressure relief port connected to the accommodating chamber, and the sampling pipeline also includes a pressure relief pipeline, which is connected to the safety valve and is arranged through the pressure relief port.

[0011] Optionally, the transport shell is further provided with an external output connector, the air intake pipeline is further connected with an external output branch pipe, and the external output branch pipe is connected to the external output connector.

[0012] Optionally, the external output branch pipe is provided with an output stop valve. And / or, the air intake pipeline is provided with an output three-way valve, and the external output branch pipe connects the output three-way valve and the external output connector.

[0013] Optionally, the transport shell is further provided with an external input connector, the air outlet pipeline is further connected with an external input branch pipe, and the external input branch pipe is connected to the external output connector.

[0014] Optionally, the external input branch pipe is provided with an input stop valve. And / or, the air outlet pipeline is provided with an input three-way valve, and the external input branch pipe connects the input three-way valve and the external input connector.

[0015] Optionally, the sampling device further comprises an external bracket, and the external bracket is arranged on one side of the transport shell. And / or, a mounting bracket is arranged in the accommodating cavity, and the sampling container is connected and fixed to the mounting bracket. And / or, the sampling pipeline is also a pressure equalizing pipeline, and the pressure equalizing pipeline is connected to the air inlet pipeline and the air outlet pipeline, and a switch valve is arranged on the pressure equalizing pipeline. And or, the transport shell comprises a shell body and an inspection door, the accommodating cavity is formed in the shell body, and an operating port connected to the accommodating cavity is arranged on one side of the shell body; the inspection door is movably connected to the shell body, and opens or covers the operating port.

[0016] The utility model also provides a gas preparation system, which includes a preparation device and a sampling device. The sampling device is the sampling device described above, and the sampling device is used to sample the gas prepared by the preparation device.

[0017] The technical solution of the utility model is to install a sampling container in the accommodating cavity of the transport shell, and use an air inlet pipeline to connect the air inlet end and the air inlet joint of the sampling container, and use an air outlet pipeline to connect the air outlet end and the air outlet joint of the sampling container. When performing the gas sampling and detection operation of the gas preparation system, the gas output pipeline of the preparation device is connected to the air inlet joint, and the gas is collected into the sampling container through the air inlet pipeline. Then, the gas input pipeline of the detection instrument is connected to the air outlet joint, and the gas sampled by the sampling device is detected. By arranging a walking mechanism on the transport shell, the operator can more conveniently push the sampling device to move between the preparation device and the detection instrument, or the sampling device can realize the function of automatic movement, effectively improve the operation convenience of the sampling device, and reduce the workload of the operator. At the same time, by installing the sampling container for collecting gas in the transport shell, the transport shell can be used to play a certain protective role on the sampling container, so as to avoid the sampling container being damaged and leaking with a certain probability due to external force during transportation or operation, improve the safety performance of the sampling device, and further improve the practicality and reliability of the sampling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a front view of an embodiment of the sampling device of the utility model;

[0020] Figure 2 for Figure 1 A left side view of an embodiment of a sampling device in FIG.

[0021] Figure 3 for Figure 1 A schematic diagram of the structure inside the transport shell of an embodiment of a sampling device.

[0022] Description of Figure Numbers:

[0023] Label name Label name 100 Sampling device 5115 Inlet three-way valve 10 Transport shell 5117 Inlet stop valve 11 Shell body 5119 Output three-way valve 111 Air intake connector 513 Intake pipe 1111 First air inlet connector 515 External output branch 1113 Second air inlet connector 5151 Output stop valve 113 Air outlet connector 53 Exhaust pipe 115 Pressure relief port 531 Pressure regulating valve 117 External output connector 533 Safety valve 119 External input connector 535 Check valve 13 Access door 537 External input branch pipe 15 Sealing cover 5371 Input stop valve 17 Accommodation cavity 539 Input three-way valve 19 Traveling mechanism 55 Pressure relief line 30 Sampling container 57 Pressure equalizing pipeline 51 Intake pipe 571 Switching valve 511 Intake manifold 70 Mounting bracket 5111 Gas purification mechanism 90 External bracket 5113 Flexible coil

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] During the operation of the existing gas preparation system, the operator usually directly carries the sampling gas cylinder to the preparation device, connects the sampling gas cylinder and the preparation device with a pipeline, and after the gas to be produced is filled into the sampling gas cylinder, the sampling gas cylinder is carried to the detection equipment for gas detection. However, the sampling gas cylinder is heavy, and manual transportation requires a lot of physical strength, and the transportation process is time-consuming and labor-intensive; and during the transportation and placement of the sampling gas cylinder, the sampling gas cylinder is mostly directly exposed to the outside, which makes the sampling gas cylinder prone to collision damage and gas leakage, posing certain safety hazards. In response to the above problems, the utility model proposes a sampling device 100.

[0030] Reference Figures 1 to 3 In an embodiment of the utility model, the sampling device 100 includes a transport shell 10, a sampling container 30 and a sampling pipeline. A accommodating cavity 17 is formed in the transport shell 10. The transport shell 10 is provided with an air inlet connector 111 and an air outlet connector 113. The transport shell 10 is provided with a walking mechanism 19. The sampling container 30 is arranged in the accommodating cavity 17. The sampling pipeline is arranged in the accommodating cavity 17. The sampling pipeline includes an air inlet pipeline 51 and an air outlet pipeline 53. The air inlet pipeline 51 is connected to the air inlet end of the sampling container 30 and the air inlet connector 111, and the air outlet pipeline 53 is connected to the air outlet end of the sampling container 30 and the air outlet connector 113.

[0031] It is understandable that, due to the large overall weight of the existing gas preparation device, the preparation device is usually fixed at a fixed position to ensure the stable progress of the gas preparation process. When the gas to be prepared needs to be produced, the pipeline of the gas storage tank can be connected to the gas output interface of the preparation device to achieve stable operation of the gas preparation system. In order to ensure the quality of the gas produced by the preparation device, a sampling container 30 can usually be used to collect part of the gas produced by the preparation device, and then the sampling container 30 can be transported to the detection instrument for detection, and then it can be determined according to the test results whether the gas produced by the preparation device meets the standard specifications or requirements, etc., which is conducive to regulating the preparation device according to the test results and ensuring the production qualification rate of the gas preparation system. It should be noted that the gas preparation system can be an electrolytic hydrogen production system, an oxygen system, or a dissolution preparation system of hydrogen sulfide or sulfur dioxide, etc. The sampling device 100 of the present application can adjust the material, pipeline design, etc. adopted according to the gas properties of the gas preparation system, so that the sampling device 100 can stably and reliably collect the sampled gas and ensure the stable operation of the sampling device 100.

[0032] In the present application, by assembling and fixing the sampling container 30 such as a gas cylinder or a gas bottle in the accommodating chamber 17 of the transport shell 10, an air inlet pipeline 51 and an air outlet pipeline 53 can be arranged in the accommodating chamber 17, and an air inlet connector 111 and an air outlet connector 113 can be installed on the outer wall of the transport shell 10. The air inlet pipeline 51 can be used to connect the air inlet connector 111 and the air inlet end of the sampling container 30, and the air outlet pipeline 53 can be used to connect the air inlet connector 111 and the air outlet end of the sampling container 30. The air inlet connector 111 can be matched with the output pipeline connector of the preparation system, and then when it is necessary to detect the gas produced by the preparation device, the sampling device 100 can be moved to the preparation device, and the output pipeline connector of the preparation device is connected to the air inlet connector 111, so that the gas produced by the preparation device can be collected into the sampling container through the air inlet pipeline, so that the sampling device 100 can collect and sample the gas produced by the preparation device. In addition, the gas outlet connector 113 can be matched with the input pipe connector of the detection instrument. When the sampling device 100 collects and samples a certain amount of gas, the sampling device 100 can be moved to the detection instrument to connect the input pipe connector of the detection instrument with the gas outlet connector 113, so that the gas collected by the sampling device 100 can be input into the detection instrument through the gas outlet channel for detection, thereby realizing stable gas detection of the gas preparation system. By using the sampling device 100 to integrate the sampling container 30 and the sampling pipe into a whole, the gas sampling detection of the gas preparation system can be performed by directly connecting the gas inlet connector 111 and the gas outlet connector 113, thereby improving the detection convenience of the gas preparation system.

[0033] By setting a walking mechanism 19 on the transport shell 10, the walking mechanism 19 can be a wheel set or a crawler installed at the bottom of the transport shell 10, so that the operator can push the sampling device 100 to move more conveniently under the action of the walking mechanism 19; or the walking mechanism 19 can be provided with a driving source such as a driving motor, so that the sampling device 100 can drive the wheel set or crawler by using the driving source to operate, so as to realize the self-driving of the sampling device 100, which is conducive to better improving the transportation convenience of the sampling device 100, and there is no need for the operator to carry the heavy sampling device 100 between the preparation device and the detection instrument, which reduces the operator's workload and effectively improves the practicality of the sampling device 100. In addition, fixing the sampling container 30 in the transport shell 10 is also conducive to using the transport shell 10 to play a certain protective effect on the sampling container 30, better avoiding the sampling container 30 from being subjected to external forces during the collection, detection and transportation process, ensuring the stable operation of the sampling device 100, and preventing the sampling container 30 from being damaged or leaking, further improving the structural stability and reliability of the sampling device 100.

[0034] The technical solution of the utility model is to install the sampling container 30 in the accommodating cavity 17 of the transport shell 10, and use the air inlet pipeline 51 to connect the air inlet end of the sampling container 30 and the air inlet joint 111, and use the air outlet pipeline 53 to connect the air outlet end of the sampling container 30 and the air outlet joint 113. When performing the gas sampling and detection operation of the gas preparation system, the gas output pipeline of the preparation device is connected to the air inlet joint 111, and the gas is collected into the sampling container 30 through the air inlet pipeline 51. Then, the gas input pipeline of the detection instrument is connected to the air outlet joint 113, and the gas sampled by the sampling device 100 is tested. By arranging the walking mechanism 19 on the transport shell 10, the operator can more conveniently push the sampling device 100 to move between the preparation device and the detection instrument, or the sampling device 100 can realize the function of automatic movement, effectively improving the operation convenience of the sampling device 100 and reducing the workload of the operator. At the same time, by installing the sampling container 30 for collecting gas in the transport shell 10, the transport shell 10 can be used to provide a certain degree of protection for the sampling container 30, thereby preventing the sampling container 30 from being damaged or leaking due to external forces during transportation or operation, thereby improving the safety performance of the sampling device 100 and further improving the practicality and reliability of the sampling device 100.

[0035] In one embodiment of the present invention, the transport shell 10 is provided with a diffusion port communicating with the accommodating chamber 17 , and the transport shell 10 is provided with a seal, and the seal is used to open or close the diffusion port.

[0036] In this embodiment, by providing a diffusion port connected to the accommodating chamber 17 on the transport shell 10, the diffusion port can be used to achieve communication between the accommodating chamber 17 and the atmosphere outside the transport shell 10. Further, when the sampling device 100 collects and samples gases with a certain degree of pollution, the diffusion port can be used to connect the atmosphere inside and outside the accommodating chamber 17 to diffuse the trace gas leaked from the sampling pipeline into the atmosphere for dilution, thereby preventing the leaked trace gas from accumulating in the accommodating chamber 17 and preventing the operator from being harmed by the accumulated gas when opening the transport shell 10 to operate the sampling pipeline and the sampling container 30. The safety hazard of the sampling device 100 is effectively reduced, and the practicality and reliability of the sampling device 100 are further improved. In addition, by setting a seal on the transport shell 10 to open and close the diffusion port, the seal can be a piston that blocks the diffusion port, or can be a cover plate that is slidably or rotatably connected to the transport shell 10, etc., so that the sampling device 100 can open and close the diffusion port according to the properties of the gas collected and sampled, and at the same time, the diffusion port can be sealed when the sampling device 100 is idle or when the sampling device 100 is transported, to prevent foreign matter from entering the accommodating chamber 17 through the diffusion port and affecting the sampling pipeline and the sampling container 30 with a certain probability, thereby ensuring the stable operation of the sampling device 100 and further improving the structural stability and reliability of the sampling device 100.

[0037] Reference Figures 1 to 3 In one embodiment of the utility model, the diffusion port is opened on the top surface of the transport shell 10, and the sealing member is a sealing cover plate 15, which is movably connected to the top surface of the transport shell 10 and opens or covers the diffusion port.

[0038] In this embodiment, by opening the diffusion port on the top surface of the transport shell 10, it is easier for the trace gas leaked in the accommodating chamber 17 to rise better through the diffusion port and be released into the atmosphere for dilution, so that the position of the polluted gas release is higher and the operator is better protected from the influence of the polluted gas, which is conducive to better improving the safety performance of the sampling device 100. The sealing member adopts a sealing cover plate 15 that is slidably connected to the top surface of the transport shell 10, which is conducive to the operator being able to more conveniently pull the sealing cover plate 15 to open or cover the diffusion port, further improving the operational convenience and practicality of the sampling device 100.

[0039] Reference Figure 3 In one embodiment of the utility model, a gas purification mechanism 5111 is provided on the air intake pipeline 51, and the gas purification mechanism 5111 is used to purify the gas in the air intake pipeline 51. And / or, a flexible coil 5113 is provided on the air intake pipeline 51.

[0040] In this embodiment, in order to better improve the purity of the gas sampled by the sampling device 100 and improve the accuracy of gas detection, a gas purification mechanism 5111 can be set on the air inlet pipeline 51. The gas purification mechanism 5111 can be a drying tube, a filter tube, etc. The gas purification mechanism 5111 can be used to perform gas-liquid separation and impurity removal on the sampled gas, so that the sampling device 100 can supply relatively pure gas to the detection instrument for detection, which is convenient for the detection instrument to obtain the gas composition result more accurately, which is conducive to more accurately judging the production qualification rate of the gas preparation system, and further improving the practicality and reliability of the sampling device 100. In addition, the use of the gas purification mechanism 5111 to dehumidify and remove impurities on the sampled gas is also conducive to better reducing the moisture and impurities of the gas stored in the sampling container 30, better avoiding the sampling container 30 from rusting, and preventing the accumulation of impurities in the inner cavity of the sampling container 30, thereby better improving the service life of the sampling device 100 and further improving the structural stability and reliability of the sampling device 100.

[0041] Reference Figure 2 and Figure 3 In one embodiment of the utility model, the air intake connector 111 includes a first air intake connector 111 and a second air intake connector 111, and the air intake pipeline 51 includes an air intake main pipe 511 and an air intake branch pipe 513. The air intake main pipe 511 connects the first air intake connector 111 and the air intake end of the sampling container 30; the air intake branch pipe 513 is connected to the air intake main pipe 511 and is connected to the second air intake connector 111.

[0042] In this embodiment, the sampling device 100 can be configured with a variety of different types of air inlet connectors 111. For example, the first air inlet connector 111 can be a ferrule connector, and the second air inlet connector 111 can be a flange connector. This allows the sampling device 100 to be adapted to connect to preparation devices with a variety of connector types, thereby better improving the convenience of disassembly and assembly of the sampling device 100 and facilitating operation by the operator. Among them, the intake pipeline 51 can utilize the intake main pipe 511 to connect the first intake connector 111 and the sampling container 30, and the intake branch pipe 513 is connected to the second intake pipeline 51 by setting a valve body structure on the intake main pipe 511 and the intake branch pipe 513 respectively, or a diverter valve body can be set at the position where the intake main pipe 511 is connected to the intake branch pipe 513, so that the sampling device 100 can control the valve body to open and close any intake branch pipe 513 and the intake main pipe 511, thereby ensuring the separate gas delivery between any intake connector 111 and the sampling container 30, realizing stable collection and sampling of the sampling device 100, and further improving the structural stability and reliability of the sampling device 100.

[0043] Reference Figure 3In one embodiment of the utility model, an intake three-way valve 5115 is provided on the intake main pipe 511 , and the intake branch pipe 513 connects the intake three-way valve 5115 and the second intake connector 111 .

[0044] In this embodiment, by setting an intake three-way valve 5115 on the intake main pipe 511, one inlet and one outlet of the intake three-way valve 5115 can be connected to the first intake connector 111 and the intake end of the sampling container 30 by pipelines respectively. At this time, by connecting the intake branch pipe 513 to the second intake connector 111 and the other inlet of the intake three-way valve 5115, the first intake connector 111 can be connected to the pipeline of the intake end of the sampling container 30 by adjusting the valve of the intake three-way valve 5115, or the second intake connector 111 can be connected to the pipeline of the intake end of the sampling container 30, thereby stably switching the intake connector 111 of the sampling device 100, so that the sampling device 100 can be better connected to the corresponding intake connector 111 according to the gas output interface of the preparation device, and the closure of the pipeline at the gas intake connector 111 is ensured, so as to ensure that the sampled gas is stably and reliably input into the sampling container 30, thereby further improving the structural stability and reliability of the sampling device 100.

[0045] Reference Figure 3 In one embodiment of the utility model, an intake stop valve 5117 is provided on the intake pipeline 51 , and the intake stop valve 5117 is arranged close to the intake connector 111 .

[0046] In this embodiment, by providing an air intake stop valve 5117 on the pipeline of the air intake pipeline 51 close to the air intake connector 111, the air intake stop valve 5117 can be used to stably open and close the air intake pipeline 51, prevent the backflow and leakage of the sampled gas in the sampling container 30, and ensure the stable operation of the sampling device 100. Among them, by providing the air intake stop valve 5117 in the form of a diaphragm valve, the diaphragm valve can be used to better improve the sealing performance of the air intake stop valve 5117 when closing the air intake pipeline 51, which is conducive to better improving the opening and closing stability and reliability of the air intake stop valve 5117, and further improving the structural stability and reliability of the sampling device 100.

[0047] Reference Figure 3 In one embodiment of the utility model, a pressure regulating valve 531 is provided on the gas outlet pipeline 53 , and the pressure regulating valve 531 is arranged close to the gas outlet end of the sampling container 30 .

[0048] In this embodiment, the sampling device 100 can be provided with a pressure regulating valve 531 on a portion of the pipeline of the air inlet pipeline 51 close to the sampling container 30. The pressure regulating valve 531 can be used to regulate the air flow pressure of the gas flowing on the air outlet pipeline 53, so that the sampling device 100 can supply a variety of gases with different pressures according to the detection requirements of the detection instrument, thereby further improving the practicality and reliability of the sampling device 100.

[0049] Reference Figure 3 In one embodiment of the present invention, a safety valve 533 is further provided on the pipeline, and the safety valve 533 is provided between the pressure regulating valve 531 and the gas outlet connector 113. The transport housing 10 is further provided with a pressure relief port 115 connected to the accommodating chamber 17, and the sampling pipeline further includes a pressure relief pipeline 55, which is connected to the safety valve 533 and is arranged through the pressure relief port 115.

[0050] In this embodiment, a safety valve 533 is provided between the pressure regulating valve 531 and the gas outlet connector 113. The safety valve 533 can maintain a normally closed state to disconnect the connection between the pressure relief pipeline 55 and the gas outlet pipeline 53, so that part of the gas flow on the gas outlet pipeline 53 after pressure regulation by the pressure regulating valve 531 can enter the safety valve 533. A pressure sensor for detecting the gas flow pressure can be integrated in the safety valve 533. The pressure sensor can be used to detect the gas pressure, so that when the pressure regulating valve 531 fails or fails, the pressure regulating valve 531 can be used to detect the gas pressure. When the pressure of the air flow flowing on the air outlet pipe 53 is too high, the safety valve 533 can detect the overpressure of the air outlet pipe 53 and connect the pressure relief pipe 55 and the air outlet pipe 53, so that part of the gas on the air outlet pipe 53 can be discharged through the pressure relief pipe 55 for pressure relief, which is beneficial to better avoid the air outlet pipe 53 outputting high-pressure gas to the detection instrument with a certain probability of damaging the detection instrument, thereby ensuring the stable operation of the sampling device 100 and the detection instrument, and further improving the practicality and reliability of the sampling device 100.

[0051] Among them, the pressure relief pipeline 55 can be set with a pipeline opening at one end, and the pipeline opening can be exposed to the outside of the transport shell 10 through the pressure relief port 115, so that the pressure relief gas flow is released into the atmosphere, or a recovery container can be set on the transport shell 10, so that the pressure relief pipeline 55 passes through the pressure relief port 115 and is connected to the recovery container. The recovery container can be used to recover the gas discharged from the pressure relief pipeline 55 to ensure the stable operation of the sampling device 100.

[0052] Reference Figure 3 In one embodiment of the utility model, a check valve 535 is further provided on the air outlet pipeline 53 , and the check valve 535 is arranged close to the air outlet connector 113 .

[0053] In this embodiment, by setting a check valve 535 on the air outlet pipeline 53, the check valve 535 can be used to effectively prevent the backflow of the flowing gas on the air outlet pipeline 53, thereby realizing the unidirectional airflow output of the air outlet pipeline 53, ensuring that the gas sampled by the sampling device 100 can be stably supplied to the detection instrument for detection, reducing the influence of the backflow gas on the air outlet pipeline 53 and the sampling container 30, and further improving the structural stability and reliability of the sampling device 100.

[0054] Reference Figure 1 and Figure 3 In one embodiment of the utility model, the transport shell 10 is also provided with an external output connector 117 , and the air intake pipeline 51 is also connected to an external output branch pipe 515 , and the external output branch pipe 515 is connected to the external output connector 117 .

[0055] In this embodiment, by setting an external output connector 117 on the transport shell 10, the external output branch pipe 515 can be used to connect the air intake pipeline 51 and the external output connector 117, so that the gas generated by the preparation device can enter the air intake pipeline 51 through the air intake connector 111, and then flow along the air intake pipeline 51 to the sampling container 30 or enter the external output pipeline. Therefore, the sampling device 100 can also be provided with an external gas cylinder on one side of the transport shell 10, and a pipeline can be used to connect the external output connector 117 and the gas inlet end of the external gas cylinder, so that the sampling device 100 can use the sampling container 30 inside the transport shell 10 for sampling and storage, and can also use the external gas cylinder outside the transport shell 10 for sampling and storage, thereby effectively improving the functionality of the sampling device 100, and then by controlling the on-off of the gas inlet pipeline 51 and the external output pipeline, the storage method of the sampled gas of the sampling device 100 can be changed, so that the sampling device 100 can only sample and store in the sampling container 30, or only sample and store in the external gas cylinder, or can simultaneously sample and store in the sampling container 30 and the external gas cylinder, thereby further improving the practicality and reliability of the sampling device 100.

[0056] Reference Figure 3 In one embodiment of the present invention, an output stop valve 5151 is provided on the external output branch pipe 515. And / or, an output three-way valve 5119 is provided on the air intake pipeline 51, and the external output branch pipe 515 connects the output three-way valve 5119 and the external output connector 117.

[0057] In this embodiment, by setting an output stop valve 5151 on the external output branch pipe 515, the output stop valve 5151 can be used to control the on-off of the external output branch pipe 515, and then the flow direction of the sampled gas can be selected, so that the sampling device 100 can store the gas sample produced by the preparation device in the external gas cylinder when the output stop valve 5151 is opened, and store the gas sample produced by the preparation device in the sampling container 30 when the output stop valve 5151 is closed, so as to realize the control of the sampling pipeline in the sampling device 100 and further improve the sampling stability and reliability of the sampling device 100. Among them, by making the output stop valve 5151 be set in the form of a valve body of a diaphragm valve, the diaphragm valve can be used to better improve the sealing performance of the output stop valve 5151 when shutting off the air intake pipeline 51, which is conducive to better improving the on-off stability and reliability of the output stop valve 5151, and further improving the structural stability and reliability of the sampling device 100.

[0058] In addition, an output three-way valve 5119 can be provided on the air inlet pipeline 51, so that the air inlet end of the output three-way valve 5119 can be connected to the pipe section of the air inlet pipeline 51 connected to the air inlet connector 111, and then one air outlet end of the output three-way valve 5119 is connected to the air inlet end of the sampling container 30 through a pipeline, and the other air outlet end of the output three-way valve 5119 is connected to the external output branch pipe 515. Furthermore, the flow direction of the gas in the air inlet pipeline 51 can be adjusted by adjusting the valve of the output three-way valve 5119, so that the sampling device 100 can stably store the gas samples generated by the preparation device in the sampling container 30 or in an external gas cylinder, thereby realizing the flow direction control of the air inlet pipeline 51 and further improving the practicality and reliability of the sampling device 100.

[0059] Reference Figure 1 and Figure 3 In one embodiment of the utility model, the transport shell 10 is also provided with an external input connector 119 , and the air outlet pipeline 53 is also connected to an external input branch pipe 537 , and the external input branch pipe 537 is connected to the external output connector 117 .

[0060] In this embodiment, the sampling device 100 can also be provided with an external input connector 119 on the transport shell 10, and the external input branch pipe 537 is used to connect the gas outlet pipeline 53 and the external input connector 119. At this time, by connecting the gas outlet end of the external gas cylinder with the external output connector 117, the gas outlet pipeline 53 in the sampling device 100 can be used to transmit the gas stored in the external gas cylinder to the detection instrument for detection, so that after the sampling device 100 is connected to the detection instrument to detect the gas in the sampling gas cylinder, other sampling gas cylinders can be directly connected to the external input connector 119 of the sampling device 100 without removing the sampling device 100, and then the connection between the sampling container 30 in the sampling device 100 and the gas outlet pipeline is closed, so that the gas stored in the external sampling gas cylinder can be input into the detection instrument through the gas outlet pipeline 53 for detection, which is conducive to better improving the functionality of the sampling device 100, improving the detection efficiency of the gas preparation system, and further improving the practicality and reliability of the sampling device 100.

[0061] Reference Figure 3 In one embodiment of the present invention, an input stop valve 5371 is provided on the external input branch pipe 537. And / or, an input three-way valve 539 is provided on the gas outlet pipeline 53, and the external input branch pipe 537 connects the input three-way valve 539 and the external input connector 119.

[0062] In this embodiment, by providing an input stop valve 5371 on the external input branch pipe 537, the input stop valve 5371 can be used to control the on-off of the external input branch pipe 537, so that the sampling device 100 can supply the gas sampled in the external gas cylinder to the detection instrument for detection when the input stop valve 5371 is opened, and can supply the gas sampled in the sampling container 30 to the detection instrument for detection when the input stop valve 5371 is closed, thereby realizing the control of the gas outlet pipeline 53 in the sampling device 100, and further improving the sampling stability and reliability of the sampling device 100. Among them, by making the input stop valve 5371 be provided in the form of a diaphragm valve, the diaphragm valve can be used to better improve the sealing performance of the input stop valve 5371 when shutting off the air inlet pipeline 51, which is conducive to better improving the on-off stability and reliability of the input stop valve 5371, and further improving the structural stability and reliability of the sampling device 100.

[0063] In addition, an input three-way valve 539 can be provided on the gas outlet pipeline 53, so that the gas outlet end of the input three-way valve 539 can be connected to the pipe section of the gas outlet pipeline 53 connected to the gas outlet connector 113, and then one gas inlet end of the output three-way valve 5119 is connected to the gas outlet end of the sampling container 30 through a pipeline, and the other gas inlet end of the output three-way valve 5119 is connected to the external input branch pipe 537. Furthermore, the gas flow direction in the gas outlet pipeline 53 can be adjusted by adjusting the valve of the input three-way valve 539, so that the sampling device 100 can stably supply the gas in the sampling container 30 or the gas in the external gas cylinder to the detection instrument for detection, thereby realizing the flow direction control of the gas outlet pipeline 53, and further improving the practicality and reliability of the sampling device 100.

[0064] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the sampling device 100 further includes an external bracket 90 , and the external bracket 90 is disposed on one side of the transport shell 10 .

[0065] In this embodiment, the sampling device 100 can be provided with an external bracket 90 on one side of the transport shell 10, so that when an external gas cylinder or other sampling gas cylinder is connected to the sampling device 100 for external sampling or detection, the external bracket 90 can be used to fix the external gas cylinder or other sampling gas cylinder to achieve stable sampling or detection of the external gas cylinder or other sampling gas cylinder, thereby further improving the overall structural stability and reliability of the sampling device 100.

[0066] Among them, the external bracket 90 can be connected and fixed to the external gas cylinder or other sampling gas cylinder by means of connectors such as snaps or bolts to ensure the stability of the external gas cylinder or other sampling gas cylinder during operation, and the external bracket 90 can be connected and fixed on one side of the transport shell 10; or the external bracket 90 can be disassembled or folded and set on one side of the transport shell 10. When the external bracket 90 is needed to fix the external gas cylinder or other sampling gas cylinder, the external bracket 90 can be removed from the transport shell 10 or unfolded for use, so that the external bracket 90 can better form a whole with the transport shell 10, thereby further improving the operational convenience and practicality of the sampling device 100.

[0067] Reference Figure 3 In one embodiment of the utility model, the sampling pipeline also includes a pressure equalizing pipeline 57 , the pressure equalizing pipeline 57 is connected to the air inlet pipeline 51 and the air outlet pipeline 53 , and a switch valve 571 is provided on the pressure equalizing pipeline 57 .

[0068] In this embodiment, by providing a pressure equalizing pipeline 57 between the air inlet pipeline 51 and the air outlet pipeline 53, and connecting the pressure equalizing pipeline 57 to the air inlet pipeline 51 and the air outlet pipeline 53, when the sampling device 100 supplies the gas in the sampling container 30 to the detection instrument through the air outlet pipeline 53, the air pressure and flow rate on the air outlet pipeline 53 can be detected. When it is detected that the air flow pressure of the air outlet pipeline 53 is too high, the switch valve 571 on the pressure equalizing pipeline 57 can be opened to make the air pressure on the air outlet pipeline 53 Part of the airflow can flow back to the air inlet pipe 51 through the pressure equalizing pipe 57, and then flow back to the sampling container 30 from the air inlet pipe 51, so that the outlet pipe 53 can be decompressed under the action of the pressure equalizing pipe 57, thereby avoiding excessive airflow pressure output by the sampling device 100 to the detection instrument, which may damage the detection instrument. The detection instrument can detect the gas sampled by the sampling device 100 more stably and reliably, thereby further improving the practicability and reliability of the sampling device 100.

[0069] Reference Figure 1 In one embodiment of the utility model, the transport shell 10 includes a shell body 11 and an inspection door 13. A accommodating cavity 17 is formed in the shell body 11, and an operating port connected to the accommodating cavity 17 is provided on one side of the shell body 11; the inspection door 13 is movably connected to the shell body 11, and the operating port is opened or covered.

[0070] In this embodiment. The transport shell 10 can open an operation port on the front side of the shell body 11, and use the inspection door 13 to open and close the operation port, so as to better ensure the closed operation and convenient maintenance of the sampling device 100. At this time, when the inspection door 13 opens the operation port, the sampling container 30 and the sampling pipeline of the sampling device 100 can be directly observed through the operation port, so that the operator can more conveniently operate the various valves on the sampling pipeline or the various valves on the sampling container 30 through the operation port, thereby improving the operational convenience and practicality of the sampling device 100. When the inspection door 13 closes the operation port, the accommodating chamber 17 can maintain a certain degree of airtightness, which is conducive to better reducing the foreign matter in the external environment from entering the accommodating chamber 17 to affect the sampling container 30 and the sampling pipeline, ensuring the stable operation of the sampling device 100, and further improving the stability and reliability of the sampling device 100. The inspection door 13 may be connected to the shell body 11 by hinges or hinges, or a slide groove may be provided on the shell body 11 so that the inspection door 13 can slide and be engaged in the slide groove, thereby realizing the movement and opening and closing of the inspection door 13 on the shell body 11. An observation window may also be provided on the inspection door 13, and the observation window may be made of a material with a certain light transmittance such as glass, so that when the inspection door 13 closes the operating port, the operation status of the sampling container 30 and the sampling pipeline in the accommodating cavity 17 can be intuitively understood through the observation window, thereby ensuring the stable operation of the sampling device 100.

[0071] Reference Figure 3 In one embodiment of the present invention, a mounting bracket 70 is provided in the accommodating cavity 17 , and the sampling container 30 is connected and fixed to the mounting bracket 70 .

[0072] In this embodiment, the sampling device 100 can be provided with a mounting bracket 70 in the accommodating cavity 17 to mount and fix the sampling container 30, so that the sampling container 30 can be more stably and reliably arranged in the transport shell 10, avoiding the sampling container 30 from shaking during the movement or transportation of the transport shell 10, and further improving the overall structural stability and reliability of the sampling device 100. Among them, the mounting bracket 70 can be connected and fixed to the sampling container 30 by means of connectors such as buckles or bolts, so as to realize the connection and fixation of the mounting bracket 70 to the sampling container 30. The use of connectors such as buckles or bolts to connect the sampling container 30 and the mounting bracket 70 is also conducive to more convenient disassembly and assembly of the sampling container 30 on the transport shell 10, which is convenient for the inspection, maintenance and replacement of the sampling container 30, and further improving the assembly convenience of the sampling device 100.

[0073] The utility model also proposes a gas preparation system, which includes a preparation device and a sampling device 100. The specific structure of the sampling device 100 refers to the above embodiment. Since the gas preparation system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0074] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sampling device, characterized in that: include: A transport shell, wherein a containing cavity is formed in the transport shell, the transport shell is provided with an air inlet joint and an air outlet joint, and the transport shell is provided with a walking mechanism; A sampling container, wherein the sampling container is disposed in the accommodating cavity; The sampling pipeline is arranged in the accommodating cavity, and the sampling pipeline includes an air inlet pipeline and an air outlet pipeline. The air inlet pipeline connects the air inlet end of the sampling container and the air inlet joint, and the air outlet pipeline connects the air outlet end of the sampling container and the air outlet joint.

2. The sampling device according to claim 1, characterized in that The transport shell is provided with a diffusion port communicating with the accommodating cavity, and the transport shell is provided with a sealing member, and the sealing member is used to open or close the diffusion port.

3. The sampling device according to claim 2, characterized in that: The diffusion port is opened on the top surface of the transport shell, and the sealing member is a sealing cover plate, which is movably connected to the top surface of the transport shell and opens or covers the diffusion port.

4. The sampling device according to claim 1, characterized in that: The air intake connector includes a first air intake connector and a second air intake connector, the air intake pipeline includes an air intake main pipe and an air intake branch pipe, the air intake main pipe is connected to the first air intake connector and the air intake end of the sampling container; the air intake branch pipe is connected to the air intake main pipe and connected to the second air intake connector; And / or, an air intake stop valve is provided on the air intake pipeline, and the air intake stop valve is arranged close to the air intake connector; And / or, a gas purification mechanism is provided on the air intake pipeline, and the gas purification mechanism is used to purify the gas in the air intake pipeline; And / or, the air intake pipeline is provided with a flexible coil; And / or, a check valve is further provided on the air outlet pipeline, and the check valve is arranged close to the air outlet connector.

5. The sampling device according to claim 1, characterized in that: A pressure regulating valve is arranged on the gas outlet pipeline, and the pressure regulating valve is arranged close to the gas outlet end of the sampling container.

6. The sampling device according to claim 5, characterized in that The pipeline is also provided with a safety valve, which is arranged between the pressure regulating valve and the gas outlet joint; The transport shell is also provided with a pressure relief port connected to the accommodating chamber, and the sampling pipeline also includes a pressure relief pipeline, which is connected to the safety valve and penetrates the pressure relief port.

7. The sampling device according to any one of claims 1 to 6, characterized in that: The transport shell is also provided with an external output connector, and the air intake pipeline is also connected with an external output branch pipe, and the external output branch pipe is connected to the external output connector.

8. The sampling device according to claim 7, characterized in that: The external output branch pipe is provided with an output stop valve; And / or, the air intake pipeline is provided with an output three-way valve, and the external output branch pipe connects the output three-way valve and the external output connector.

9. The sampling device according to any one of claims 1 to 6, characterized in that: The transport shell is also provided with an external input connector, the air outlet pipeline is also connected with an external input branch pipe, and the external input branch pipe is connected to the external output connector.

10. The sampling device according to claim 9, characterized in that The external input branch pipe is provided with an input stop valve; And / or, the air outlet pipeline is provided with an input three-way valve, and the external input branch pipe connects the input three-way valve and the external input connector.

11. The sampling device according to any one of claims 1 to 6, characterized in that: The sampling device further comprises an external bracket, and the external bracket is arranged on one side of the transport shell; And / or, a mounting bracket is provided in the accommodating cavity, and the sampling container is connected and fixed to the mounting bracket; And / or, the sampling pipeline is also a pressure equalizing pipeline, the pressure equalizing pipeline is connected to the air inlet pipeline and the air outlet pipeline, and a switch valve is provided on the pressure equalizing pipeline; And / or, the transport housing comprises: A shell body, wherein the housing cavity is formed in the shell body, and an operation port communicating with the housing cavity is provided on one side of the shell body; An inspection door is movably connected to the shell body and is arranged to open or cover the operating port.

12. A gas preparation system, characterized in that: The gas preparation system comprises a preparation device and a sampling device, wherein the sampling device is the sampling device described in any one of claims 1 to 11, and the sampling device is used to sample the gas prepared by the preparation device.

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