Gas output device and control method

Abstract

The embodiment of the invention provides a gas output device and a control method. The gas output device comprises a target gas assembly used for outputting target gas; the connecting module comprises a gas inlet, a gas outlet and a diversion port which are communicated with one another, the gas inlet is communicated with the output end of the target gas assembly, and the gas outlet is detachably connected with a gas analyzer; the one-way valve is communicated with the flow dividing opening and used for exhausting redundant target air from the flow dividing opening to the outside and preventing air from flowing back to the flow dividing opening from the flow dividing opening; the control module is electrically connected with the target gas assembly; the control module is used for acquiring a first flow V1, and the first flow V1 is the maximum gas extraction flow of the gas analyzer; after the control module obtains the first flow V1, the flow of the target gas output by the target gas assembly is set to be second flow V2 according to the first flow V1, and V2 is larger than or equal to V1; and under the condition that the gas analyzer is connected to the gas outlet, the control module controls the target gas assembly to output the target gas to the gas inlet of the connecting module according to a second flow V2.

Description

Technical Field

[0001] The present application relates to the field of gas output control, and in particular to a gas output device and a control method. Background Art

[0002] The flue gas emissions from burning coal, garbage, etc. cause serious environmental pollution. CO2, SO2, CO, NO x , NH3 and other gases seriously endanger human health. The state has issued corresponding laws and policies to strictly manage flue gas emissions and strictly control the emission concentration of corresponding harmful gases in flue gas. Flue gas monitoring is an indispensable project in atmospheric environmental monitoring. It is a basic means to identify key pollution sources and monitor and control pollution sources.

[0003] Gas analyzers such as flue gas analyzers can be used to monitor the content of pollutants such as CO2, sulfide and nitrogen oxides in flue gas. In order to calibrate the flue gas analyzer, a flue gas generator is required, which can output simulated flue gas of specific composition and concentration to detect the flue gas analyzer.

[0004] According to the provisions of "JJF 1523-2015 Carbon Monoxide and Carbon Dioxide Infrared Gas Analyzer Type Evaluation Outline", when calibrating the flue gas analyzer, a flow controller (i.e., a split flow structure) must be set. The structure of the flow controller is as follows: Figure 1 As shown, it includes a flow controller inlet, a flow meter and a bypass flow meter. The flow controller inlet is used to input the gas standard substance (i.e., simulated flue gas) generated by the flue gas generating device. The gas standard substance is divided into two paths in the flow controller, flowing to the flow meter and the bypass flow meter respectively. The flow meter is connected to the instrument under test (i.e., the flue gas analyzer), and the bypass flow meter is connected to the vent pipeline (the bypass flow meter and the vent pipeline connected thereto are the bypass venting structure).

[0005] When calibrating the inhalation flue gas analyzer, the flue gas analyzer inhales the required flow of simulated flue gas through its built-in air pump, and the excess simulated flue gas is discharged to the venting pipeline through the bypass flowmeter; at the same time, the bypass flowmeter detects the flow rate and flow direction of the simulated flue gas flowing through, and whether air backflow occurs can be determined based on the detection result of the bypass flowmeter. At present, the detection and calibration of the flue gas analyzer used in the existing technology are all carried out at room temperature. However, the temperature and humidity of the actual flue gas are very high, the temperature can reach above 100°C, and the humidity can reach above 30% (volume ratio). The detection and calibration at room temperature cannot be consistent with the actual use, which will cause systematic errors. In order to improve the accuracy of the detection and calibration of the flue gas analyzer, it is best to use high-temperature and high-humidity simulated flue gas corresponding to the temperature and humidity of the actual flue gas when calibrating the flue gas analyzer. However, since there are few optional models of high-temperature and high-humidity flowmeters and they are expensive, the method introduced in JJF 1523-2015 is not suitable for the application scenario of calibrating the flue gas analyzer with high-temperature and high-humidity simulated flue gas.

[0006] In addition, in some cases, the exhaust flow rate of the flue gas analyzer is unknown. If the flow rate of the simulated flue gas is to be greater than the exhaust flow rate of the flue gas analyzer to avoid air backflow, the flow rate of the simulated flue gas must be set very large, which leads to material waste and air pollution. At the same time, when the flow rate of the simulated flue gas is much greater than the exhaust flow rate of the flue gas analyzer, the excess simulated flue gas exceeds the exhaust capacity of the bypass exhaust structure, resulting in the excess simulated flue gas cannot be discharged in time, forming a large positive pressure in the pipeline transported to the flue gas analyzer, causing the pressure of the simulated flue gas transported to the flue gas analyzer to be too high, affecting the normal operation of the flue gas analyzer. Summary of the invention

[0007] Embodiments of the present application provide a gas output device and a control method for controlling the gas output device to calibrate a gas analyzer such as a vacuum gas analyzer.

[0008] The present application provides a control method for a gas output device, wherein the gas output device comprises:

[0009] A target gas component, used for outputting target gas;

[0010] A connection module, the connection module comprising an air inlet, an air outlet and a diversion port which are interconnected, the air inlet being connected to the output end of the target gas component, and the air outlet being used for detachable connection with a gas analyzer to be measured;

[0011] a one-way valve connected to the diversion port, the one-way valve being used to discharge excess target gas from the diversion port to the outside and prevent external gas from flowing back into the diversion port; and

[0012] A control module, electrically connected to the target gas component;

[0013] The control method comprises:

[0014] S10: The control module obtains a first flow rate V1, where the first flow rate V1 is the maximum gas extraction flow rate of the gas analyzer;

[0015] S20: the control module sets the flow rate of the target gas output by the target gas component to a second flow rate V2 according to the first flow rate V1, where V2 ≥ V1;

[0016] S30: Connecting the gas analyzer to the gas outlet;

[0017] S40: The control module controls the target gas component to output the target gas to the gas inlet of the connection module according to the second flow rate V2.

[0018] In an optional implementation of the present application, the temperature of the target gas is greater than 100°C.

[0019] In an optional implementation manner of the present application, the gas output device further includes:

[0020] A measured gas flow detector, wherein the input end of the measured gas flow detector is connected to the first gas source, the output end of the measured gas flow detector is used to communicate with the gas analyzer, and the measured gas flow detector is electrically connected to the control module;

[0021] The step S10 comprises:

[0022] S11: connecting the output end of the measured gas flow detector with the gas analyzer;

[0023] S12: starting the gas analyzer and the gas output device, so that the gas analyzer extracts a first gas from a first gas source, and the first gas flows through the measured gas flow detector;

[0024] S13: the control module obtains the maximum flow rate of the first gas flowing through the measured gas flow detector, the maximum flow rate of the first gas flowing through the measured gas flow detector is the maximum exhaust flow rate of the gas analyzer, and the maximum exhaust flow rate is used as the first flow rate V1;

[0025] S14: Disconnecting the connection between the gas analyzer and the measured gas flow detector.

[0026] In an optional implementation manner of the present application, the gas output device further includes:

[0027] a first connecting component connected to the gas outlet of the connecting module, the first connecting component being used for detachably connecting to a probe of the gas analyzer; and

[0028] A second connecting component is connected to the output end of the measured gas flow detector, and the first connecting component is used to be detachably connected to the probe of the gas analyzer;

[0029] Wherein, step S11 comprises:

[0030] Connecting the second connecting component to the probe of the gas analyzer to connect the output end of the measured gas flow detector with the probe of the gas analyzer;

[0031] Wherein, step S14 comprises:

[0032] Separating the second connecting component from the probe of the gas analyzer to disconnect the connection between the probe of the gas analyzer and the measured gas flow detector;

[0033] Wherein, step S30 includes:

[0034] The probe of the gas analyzer is connected to the first connecting component to communicate the probe of the gas analyzer with the gas outlet.

[0035] In an optional implementation manner of the present application, the gas output device further comprises an input module electrically connected to the control module;

[0036] The step S10 comprises:

[0037] S15: The control module obtains the first flow V1 manually input from the input module.

[0038] In an optional implementation manner of the present application, the method further includes:

[0039] S50: The gas analyzer detects the target gas.

[0040] The present application provides a gas output device, which includes:

[0041] A target gas component, used for outputting target gas;

[0042] A connection module, comprising an air inlet, an air outlet and a diversion port which are interconnected, wherein the air inlet is connected to the output end of the target gas component, and the air outlet is used for detachable connection with the gas analyzer to be measured;

[0043] a one-way valve connected to the diversion port, the one-way valve being used to discharge excess target gas from the diversion port to the outside and prevent external gas from flowing back into the diversion port; and

[0044] A control module, electrically connected to the target gas component;

[0045] The control module is used to obtain a first flow rate V1, where the first flow rate V1 is the maximum gas extraction flow rate of the gas analyzer;

[0046] After the control module acquires the first flow rate V1, the control module sets the flow rate of the target gas output by the target gas component to a second flow rate V2 according to the first flow rate V1, where V2 ≥ V1;

[0047] In a case where the gas analyzer is connected to the gas outlet of the connection module, the control module controls the target gas component to output the target gas to the gas inlet of the connection module according to the second flow rate V2.

[0048] In an optional implementation of the present application, the temperature of the target gas is greater than 100°C.

[0049] In an optional embodiment of the present application, the device further comprises: a measured gas flow detector, wherein the input end of the measured gas flow detector is connected to the first gas source, the output end of the measured gas flow detector is used to be detachably connected to the gas analyzer, and the measured gas flow detector is electrically connected to the control module;

[0050] When the output end of the measured gas flow detector is connected to the gas analyzer, the gas analyzer extracts the first gas from the first gas source, and the control module obtains the maximum flow rate of the first gas flowing through the measured gas flow detector. The maximum flow rate of the first gas flowing through the measured gas flow detector is the maximum extraction flow rate of the gas analyzer, and the maximum extraction flow rate is used as the first flow rate V1.

[0051] In an optional implementation manner of the present application, the present invention further includes:

[0052] A first connecting component connected to the gas outlet of the connecting module and used for detachably connecting to a probe of the gas analyzer; and

[0053] A second connecting component is connected to the output end of the measured gas flow detector and is used for detachably connecting to the probe of the gas analyzer;

[0054] When the gas output device is connected to a gas analyzer, one of the first connecting member and the second connecting member is connected to a probe of the gas analyzer.

[0055] In an optional implementation manner of the present application, an input module is further included, and the input module is electrically connected to the control module, and the control module is used to obtain the first flow V1 manually input from the input module.

[0056] In an optional implementation manner of the present application, the first flow rate V1 and the second flow rate V2 satisfy:

[0057] V2=kV1, where k≥1; or

[0058] V2=V1+ΔV, where ΔV≥0.

[0059] Beneficial effects:

[0060] Before the gas output device of the embodiment of the present application inputs the target gas into the gas analyzer, the gas output device first obtains the first flow rate of the gas analyzer, and then the control module sets the flow rate of the target gas output by the target gas component to a second flow rate according to the first flow rate, and the second flow rate is not less than the first flow rate, to ensure that the flow rate of the target gas output by the target gas component meets the flow rate of the target gas required by the gas analyzer, to ensure that no external gas flows back into the connecting module from the diversion port and flows from the gas outlet to the gas analyzer, to ensure the accuracy of the detection results of the gas analyzer, to avoid the external gas flowing back from the diversion port due to the target gas output by the target gas component being too small and affecting the normal operation of the gas analyzer, and to avoid the target gas flow rate being too large and causing excess target gas to be unable to be discharged from the diversion port in time, thereby forming a large positive pressure, resulting in excessive pressure of the target gas delivered to the gas analyzer, affecting the normal operation of the gas analyzer.

[0061] That is, first obtain the maximum flow rate of the gas required by the gas analyzer, and then set the output flow rate of the target gas of the target gas component according to the maximum flow rate of the gas required by the gas analyzer, so that the flow rate of the target gas output by the gas output device is not less than the maximum flow rate of the gas required by the gas analyzer but not too large.

[0062] Compared with the prior art in which a bypass flowmeter is designed in the bypass exhaust structure to detect whether there is external gas flowing back from the bypass exhaust structure to the instrument under test, the embodiment of the present application does not need to additionally design a bypass flowmeter at the diversion port because the second flow rate of the target gas output by the target gas component is maintained not less than the first flow rate of the gas required by the gas analyzer.

[0063] In the embodiment of the present application, since the second flow rate of the target gas output by the target gas component is kept greater than the first flow rate of the gas required by the gas analyzer, and a one-way valve is provided at the diversion port to prevent the backflow of external gas, there is no need to provide a bypass flowmeter at the diversion port to detect whether backflow occurs; therefore, when the embodiment of the present application is applied to the case of high-temperature and high-humidity gas, that is, when the gas output device inputs high-temperature and high-humidity target gas to the gas analyzer, there is no need to provide a high-temperature and high-humidity resistant bypass flowmeter with few optional models and high price to detect whether backflow of external gas occurs, which reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0065] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0066] Figure 1 The figure is a schematic diagram of a shunt structure in the prior art.

[0067] Figure 2 This is a schematic diagram of the pipeline and circuit connection structure of the gas output device provided in an embodiment of the present application.

[0068] Figure 3 A schematic diagram of the circuit connection structure of the gas output device provided in an embodiment of the present application.

[0069] Figure 4 A schematic diagram of the circuit connection structure of the gas output device provided in an embodiment of the present application.

[0070] Figure 5 This is a flow chart of a method for controlling a gas output device provided in an embodiment of the present application.

[0071] Figure 6 This is a flow chart of a method for controlling a gas output device provided in an embodiment of the present application.

[0072] Figure 7 This is a flow chart of a method for controlling a gas output device provided in an embodiment of the present application.

[0073] Reference numerals:

[0074] 33. Connecting module; 332. Air inlet; 333. Air outlet; 334. Diverter port; 34. One-way valve; 35. First connecting component;

[0075] 60. Control module;

[0076] 70. Measured gas flow detection module; 71. Measured gas flow detector; 72. Second connecting component;

[0077] 80. First gas source;

[0078] 100, gas output device; 110, target gas component; 120, input module; 130, storage module;

[0079] 200. Gas analyzer; 210. Probe of gas analyzer. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. All other embodiments obtained by those skilled in the art without creative work based on the embodiments in the present application belong to the scope of protection of the present application.

[0081] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0082] like Figure 2 As shown, an embodiment of the present invention provides a gas output device 100, which can be detachably connected to a tested gas analyzer 200. It should be noted that when the gas output device 100 and the gas analyzer 200 are connected, the gas analyzer 200 and the gas output device 100 are in communication.

[0083] The gas output device 100 includes a target gas component 110, a connection module 33, a one-way valve 34 and a control module 60. The target gas component 110 may include one or more carrier gas pipelines, one or more standard gas pipelines, a gas mixing pipe, a target gas pipeline and devices arranged on each pipeline, such as a permeation humidification module, a temperature control component, etc. The following is an exemplary description in conjunction with other drawings. The carrier gas pipeline can be connected to nitrogen as a carrier gas, and the standard gas pipeline can be connected to gases such as CO2 and hydrogen sulfide.

[0084] The connection module 33 connects the target gas component 110 and the one-way valve 34, and the connection module 33 is used to be detachably connected to the gas analyzer 200. Exemplarily, the connection module 33 includes an inlet 332, an outlet 333, and a diverter 334 that are interconnected, the inlet 332 is connected to the output end of the target gas component 110, the outlet 333 is used to be detachably connected to the gas analyzer 200, and the diverter 334 is connected to the one-way valve 34.

[0085] Among them, the one-way valve 34 is used to discharge the excess target gas from the diversion port 334 to the outside, and prevent the external gas (such as air) from flowing back into the diversion port 334, thereby preventing the external gas from flowing back from the diversion port 334 into the connecting module 33 and flowing to the outlet 333.

[0086] Among them, the control module 60 is electrically connected to the target gas component 110. It should be understood that the control module 60 is electrically connected to the electrical devices in the target gas component 110, and an exemplary description is given below. In the embodiment of the present application, the control module 60 can be used to control the target gas component 110 to output the target gas according to a predetermined flow rate, wherein the target gas can be referred to as the target gas.

[0087] Specifically, the control module 60 is used to obtain a first flow rate V1, which is the maximum exhaust flow rate of the gas analyzer 200; after the control module 60 obtains the first flow rate V1, the control module 60 sets the flow rate of the target gas output by the target gas component 110 to a second flow rate V2 according to the first flow rate V1, wherein V2 ≥ V1; when the gas analyzer 200 is connected to the gas outlet 333 of the connecting module 33, the control module 60 controls the target gas component 110 to output the target gas to the gas inlet 332 of the connecting module 33 according to the second flow rate V2.

[0088] Before the gas output device 100 of the embodiment of the present application inputs the target gas to the gas analyzer 200, the gas output device 100 first obtains the maximum gas extraction flow rate of the gas analyzer 200, that is, the first flow rate V1, and then the control module 60 sets the flow rate of the target gas output by the target gas component 110 to the second flow rate V2 according to the first flow rate V1, and the second flow rate V2 is greater than or equal to the first flow rate V1, ensuring that the flow rate of the target gas output by the target gas component 110 meets the flow rate of the target gas required by the gas analyzer 200, and ensuring that there is no external gas at the diversion port 334. The gas backflows into the connecting module 33 and flows from the gas outlet 333 to the gas analyzer 200, ensuring the accuracy of the detection results of the gas analyzer 200, avoiding the backflow of external gas from the diversion port 334 due to the target gas outputted by the target gas component 110 being too small and affecting the normal operation of the gas analyzer 200, and avoiding the target gas flow being too large and causing the excess target gas to be unable to be discharged from the diversion port 334 in time to form a large positive pressure, resulting in the pressure of the target gas delivered to the gas analyzer 200 being too high and affecting the normal operation of the gas analyzer 200.

[0089] That is, the flow rate of the gas required by the gas analyzer 200 is first obtained, and then the flow rate of the output target gas of the target gas component 110 is set according to the flow rate of the gas required by the gas analyzer 200, so that the flow rate of the target gas output by the gas output device 100 is not less than the maximum flow rate of the gas required by the gas analyzer 200 but not too large.

[0090] Compared with the prior art in which a bypass flowmeter is designed in the bypass exhaust structure to detect whether there is external gas flowing back to the instrument under test in the bypass exhaust structure, the embodiment of the present application maintains the second flow rate V2 of the target gas output by the target gas component 110 to be no less than the maximum flow rate of the gas required by the gas analyzer 200, that is, the first flow rate V1, and there is no need to additionally design a bypass flowmeter at the diversion port 334, which can reduce the number of processes and save costs.

[0091] In the embodiment of the present application, since the second flow rate V2 of the target gas output by the target gas component 110 is maintained not less than the first flow rate V1 of the gas required by the gas analyzer 200, and a one-way valve 34 is provided at the diversion port 334 to prevent the backflow of external gas, there is no need to provide a bypass flow meter at the diversion port 334 to detect whether backflow occurs; therefore, when the embodiment of the present application is applied to the case of high-temperature and high-humidity gas, that is, when the gas output device 100 inputs high-temperature and high-humidity target gas to the gas analyzer 200, there is no need to provide a high-temperature and high-humidity resistant bypass flow meter with few optional models and high price to detect whether backflow of external gas occurs, which reduces the cost.

[0092] In the embodiment of the present application, the connection module 33 can be understood as a three-way pipe.

[0093] The control module 60 of the present application can obtain the first flow rate V1 of the gas analyzed by the gas analyzer 200 in different ways. The following is an illustration of several ways in which the control module 60 obtains the first flow rate V1 of the gas analyzed by the gas analyzer 200.

[0094] In an optional embodiment of the present application, the gas output device 100 also includes a measured gas flow detector 71, the input end of the measured gas flow detector 71 is connected to the first gas source 80, the output end of the measured gas flow detector 71 is used to be detachably connected to the gas analyzer 200, and the measured gas flow detector 71 is electrically connected to the control module 60. When the output end of the measured gas flow detector 71 is connected to the gas analyzer 200, the gas analyzer 200 extracts the first gas from the first gas source 80, and the control module 60 obtains the maximum flow rate of the first gas flowing through the measured gas flow detector 71. The maximum flow rate of the first gas flowing through the measured gas flow detector 71 is the maximum gas extraction flow rate of the gas analyzer 200, that is, the maximum flow rate of the first gas flowing through the measured gas flow detector 71 and the maximum gas extraction flow rate of the gas analyzer 200 are both the first flow rate V1.

[0095] Specifically, in practical applications, the output end of the measured gas flow detector 71 can be connected to the gas analyzer 200 first. The output end of the measured gas flow detector 71 can be connected to the gas analyzer 200 in a manner of connection between two connecting components, such as the output end of the measured gas flow detector 71 is connected to the second connecting component 72, and the second connecting component 72 is connected to the measured gas flow detector 71, and the second connecting component 72 is used to be detachably connected to the probe 210 of the gas analyzer 200. When the second connecting component 72 is connected to the probe 210, the second connecting component 72 is connected to the probe 210. Thus, the measured gas flow detector 71 can be connected to the probe 210 of the gas analyzer 200 through the second connecting component 72. It should be noted that the connection between the measured gas flow detector 71 and the gas analyzer 200 is not limited to this, and other methods can also be used, such as the measured gas flow detector 71 can be directly detachably connected to the probe 210 of the gas analyzer 200.

[0096] Then, start the gas analyzer 200 and the gas output device 100, that is, the gas analyzer 200 and the gas output device 100 are powered on, the gas analyzer 200 runs and extracts the first gas from the first gas source 80, the first gas flows through the measured gas flow detector 71, and during the first gas flowing through the measured gas flow detector 71, the measured gas flow detector 71 can detect the maximum flow rate of the first gas flowing through the measured gas flow detector 71, the maximum flow rate of the first gas flowing through the measured gas flow detector 71 is equal to the maximum exhaust flow rate of the gas analyzer 200, that is, the maximum flow rate of the first gas flowing through the measured gas flow detector 71 and the maximum exhaust flow rate of the gas analyzer 200 are both the first flow rate V1.

[0097] Then, the control module 60 obtains the maximum flow rate of the first gas flowing through the measured gas flow detector 71, that is, the first flow rate V1. In one case, after the measured gas flow detector 71 detects the first flow rate V1 of the first gas flowing through the measured gas flow detector 71, the measured gas flow detector 71 can directly send the first flow rate V1 to the control module 60. In another case, the control module 60 can send a first flow acquisition instruction to the measured gas flow detector 71, and the measured gas flow detector 71 sends the first flow rate V1 to the control module 60 according to the first flow acquisition instruction. In another case, after the measured gas flow detector 71 detects the first flow rate V1 of the first gas flowing through the measured gas flow detector 71, the measured gas flow detector 71 can store the first flow rate V1 in a predetermined storage device, and the control module 60 obtains the first flow rate V1 from the storage device.

[0098] The measured gas flow detection module 70 of the gas output device 100 according to the embodiment of the present application may include a measured gas flow detector 71 and a second connecting component 72 .

[0099] The measured gas flow detector 71 may be a flow meter.

[0100] The second connecting component 72 may be a quick plug.

[0101] Exemplarily, the first gas source 80 may be the atmosphere, that is, the input end of the measured gas flow detector 71 is directly or indirectly connected to the atmosphere. In other optional embodiments, the first gas source 80 includes a gas tank and a first gas contained in the gas tank. When the first gas source 80 is the atmosphere, the first gas is air; when the first gas source 80 is a gas tank, the first gas may be a chemically stable gas such as nitrogen.

[0102] In another optional embodiment of the present application, Figure 3 As shown, combined Figure 2 , the gas output device 100 also includes an input module 120, and the input module 120 is electrically connected to the control module 60, and the control module 60 is also used to obtain the manually input first flow rate V1 from the input module 120. The user can obtain the first flow rate V1 from the manual, specification or nameplate of the gas analyzer 200. It can be understood that the manual, specification or nameplate of the gas analyzer 200 records the maximum air extraction flow value of the gas analyzer 200, that is, the first flow rate V1, so that the user can obtain the first flow rate V1 from the manual, specification or nameplate of the gas analyzer 200. In one case, the input module 120 can be a camera or a scanner, and the user can control the camera or scanner to obtain the first flow rate V1 from the manual, specification or nameplate of the gas analyzer 200 by video or scanning. In another case, the input module 120 may be a keyboard, a touch panel or a voice receiver, which can receive the first flow V1 from manual input, such as the user confirming the first flow V1 from the manual, specification or nameplate of the gas analyzer 200, and then inputting the first flow V1 through the keyboard, touch panel or voice receiver. After acquiring the first flow V1, the input module 120 may send the first flow V1 to the control module 60. Similarly, the control module 60 may also send a first flow acquisition instruction to the input module 120, and the input module 120 may send the first flow V1 to the control module 60 according to the first flow acquisition instruction. In addition, after acquiring the first flow V1, the input module 120 may also store it in a storage device.

[0103] like Figure 4As shown, the gas output device 100 also includes a storage module 130, the storage module 130 is electrically connected to the control module 60, the storage module 130 stores data, and the control module 60 can obtain the data of the storage module 130 and execute. Exemplarily, the storage module 130 stores the first flow rate V1 of the gas extracted by the gas analyzer 200. Exemplarily, after obtaining the first flow rate V1, the input module 120 first stores the first flow rate V1 in the storage module 130, and when the control module 60 needs to obtain the first flow rate V1, the control module 60 can directly obtain the first flow rate V1 from the storage module 130. In the embodiment of the present application, the storage module 130 may include one or more memories.

[0104] It should be noted that the examples of several ways in which the control module 60 obtains the first flow rate V1 in the embodiment of the present application are not limited to these.

[0105] In the embodiment of the present application, after the control module 60 obtains the first flow rate V1 of the first gas flowing through the measured gas flow detector 71, the control module 60 sets the flow rate of the target gas output by the target gas component 110 to the second flow rate V2 according to the first flow rate V1. And the connection relationship between the gas analyzer 200 and the measured gas flow detector 71 is disconnected. Specifically, the second connecting component 72 and the probe 210 of the gas analyzer 200 are separated to disconnect the connection relationship between the gas analyzer 200 and the measured gas flow detector 71.

[0106] Then, the gas analyzer 200 is connected to the connection module 33, that is, the probe 210 of the gas analyzer 200 is connected to the gas outlet 333 of the connection module 33. Exemplarily, the gas outlet 333 of the connection module 33 can be connected to the probe 210 of the gas analyzer 200 through the first connection component 35, and the gas outlet 333 of the connection module 33 is connected to the first connection component 35, and the first connection component 35 is used to be detachably connected to the probe 210 of the gas analyzer 200. Specifically, the connection module 33 is connected to the first connection component 35, and the first connection component 35 is connected to the gas outlet 333 position. When the connection module 33 and the first connection component 35 are connected, the first connection component 35 and the gas outlet 333 of the connection module 33 are communicated. When the first connection component 35 is connected to the probe 210, the first connection component 35 and the probe 210 are communicated, so that the probe 210 and the gas outlet 333 of the connection module 33 are connected.

[0107] Then, the control module 60 controls the target gas component 110 to output the target gas to the gas inlet 332 of the connection module 33 according to the second flow rate V2. Since the gas inlet 332, the gas outlet 333 and the diversion port 334 are interconnected, after the target gas is output to the gas inlet 332 according to the second flow rate V2, the target gas is transmitted from the gas inlet 332 to the gas outlet 333 and the diversion port 334, and the target gas transmitted to the gas outlet 333 is transmitted to the gas analyzer 200 through the second connecting component 72.

[0108] After receiving the target gas, the gas analyzer 200 may detect the target gas.

[0109] It should be noted that after the gas analyzer 200 completes the detection of the target gas, the gas analyzer 200 and the gas output device 100 are separated. Specifically, the first connecting component 35 and the probe 210 of the gas analyzer 200 can be separated.

[0110] The first connecting component 35 may be a quick plug. Exemplarily, the first connecting component 35 and the second connecting component 72 have the same shape.

[0111] In an optional embodiment of the present application, the first flow rate V1 and the second flow rate V2 satisfy: V2=kV1, where k≥1.

[0112] In another optional embodiment of the present application, the first flow rate V1 and the second flow rate V2 satisfy: V2=V1+ΔV, where ΔV≥0.

[0113] The control module 60 may be understood as the control center of the gas output device 100 , which may include one or more processors.

[0114] The target gas component 110 can output the gas required by the gas analyzer 200, such as the target gas output by the target gas component 110 satisfies the gas flow, temperature, humidity, etc. required by the gas analyzer 200. In some cases, the target gas component 110 can output high-temperature and high-humidity gas, such as the target gas component 110 can output high-temperature (e.g., more than 100° C.) and high-humidity (e.g., more than 30% by volume) simulated flue gas. In the case where the target gas component 110 outputs high-temperature and high-humidity simulated flue gas, the gas output device 100 can also be referred to as a high-temperature and high-humidity flue gas generating device, and the target gas component 110 can also be referred to as a flue gas component 110.

[0115] The following is an exemplary description of the control method of the gas output device 100 in conjunction with the flowchart of the present application, wherein the gas output device 100 is combined with Figures 2 to 4 , please refer to the above content and I will not repeat it here.

[0116] like Figure 5As shown, the control method of the gas output device includes: step S10, step S20, step S30 and step S40.

[0117] Step S10 : the control module 60 obtains a first flow rate V1 , where the first flow rate V1 is a maximum gas extraction flow rate of the gas analyzer 200 .

[0118] like Figure 6 As shown, step 10 in which the control module 60 obtains the first flow rate V1 includes step S11, step S12, step S13 and step S14.

[0119] Step S11: connecting the output end of the measured gas flow detector 71 with the gas analyzer 200. The connection relationship between the output end of the measured gas flow detector 71 and the gas analyzer 200 can refer to the above content and will not be repeated here.

[0120] Step S12: Start the gas analyzer 200 and the gas output device 100, so that the gas analyzer 200 extracts the first gas from the first gas source 80, and the first gas flows through the measured gas flow detector 71. It can be understood that, in the process of the first gas flowing through the measured gas flow detector 71, the measured gas flow detector 71 can detect the maximum flow rate of the first gas flowing through the measured gas flow detector 71. It should be noted that the maximum flow rate of the first gas flowing through the measured gas flow detector 71 is the same as the maximum gas extraction flow rate of the gas analyzer 200, that is, the maximum flow rate of the first gas flowing through the measured gas flow detector 71 and the maximum gas extraction flow rate of the gas analyzer 200 are both the first flow rate V1.

[0121] Step S13: the control module 60 obtains the first flow rate V1 of the first gas flowing through the measured gas flow detector 71. The specific manner in which the control module 60 obtains the first flow rate V1 of the first gas flowing through the measured gas flow detector 71 can be found in the above content and will not be repeated here.

[0122] Step S14: disconnect the connection between the gas analyzer 200 and the measured gas flow detector 71.

[0123] It should be noted that the manner in which the control module 60 obtains the first flow rate V1 is not limited thereto, for example, step 10 may include S15.

[0124] S15: The control module 60 obtains the manually input first flow rate V1 from the input module 120. For details, please refer to the above content and will not be repeated here.

[0125] Step S20: the control module 60 sets the flow rate of the target gas output by the target gas component 110 to the second flow rate V2 according to the first flow rate V1, wherein V2 ≥ V1.

[0126] In a preferred embodiment, the temperature of the target gas output by the target gas component 110 is greater than 100° C., and the humidity is greater than 30% (volume ratio).

[0127] In the embodiment of the present application, step S20 is performed after step S14. In another embodiment of the present application, step S20 may also be performed after step S13 and before step S14.

[0128] Step S30: Connect the gas analyzer 200 to the gas outlet 333 of the connection module 33. The connection relationship between the gas analyzer 200 and the gas outlet 333 can refer to the above content, which will not be repeated here.

[0129] It should be understood that before the gas analyzer 200 is connected to the gas outlet 333 of the connection module 33 , the gas analyzer 200 is first disconnected from the measured gas flow detector 71 .

[0130] Step S40 : the control module 60 controls the target gas component 110 to output the target gas to the gas inlet 332 of the connection module 33 according to the second flow rate V2 .

[0131] like Figure 7 As shown, the control method of the gas output device further includes step S50.

[0132] Step S50: The gas analyzer 200 detects the target gas.

[0133] The gas output device and control method provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for controlling a gas output device, characterized in that: The gas output device (100) comprises: A target gas component (110), used for outputting the target gas; A connection module (33), the connection module (33) comprising an air inlet (332), an air outlet (333) and a diversion port (334) which are interconnected, the air inlet (332) being connected to an output end of the target gas component (110), and the air outlet (333) being used for detachably connecting to a gas analyzer (200) to be measured; a one-way valve (34), connected to the diversion port (334), the one-way valve (34) being used to discharge excess target gas from the diversion port (334) to the outside and prevent external gas from flowing back into the diversion port (334); and A control module (60) electrically connected to the target gas component (110); The control method comprises: S10: the control module (60) acquires a first flow rate V1, where the first flow rate V1 is the maximum gas extraction flow rate of the gas analyzer (200); S20: the control module (60) sets the flow rate of the target gas output by the target gas component (110) to a second flow rate V2 according to the first flow rate V1, wherein V2 ≥ V1; S30: Connecting the gas analyzer (200) to the gas outlet (333); S40: The control module (60) controls the target gas component (110) to output the target gas to the gas inlet (332) of the connection module (33) according to the second flow rate V2.

2. The control method of the gas output device according to claim 1, characterized in that: The temperature of the target gas is greater than 100°C.

3. The control method of the gas output device according to claim 1 or 2, characterized in that: The gas output device (100) further comprises: A measured gas flow detector (71), wherein an input end of the measured gas flow detector (71) is connected to a first gas source (80), an output end of the measured gas flow detector (71) is used to communicate with the gas analyzer (200), and the measured gas flow detector (71) is electrically connected to the control module (60); The step S10 comprises: S11: connecting the output end of the measured gas flow detector (71) with the gas analyzer (200); S12: starting the gas analyzer (200) and the gas output device (100), so that the gas analyzer (200) extracts a first gas from a first gas source (80), and the first gas flows through the measured gas flow detector (71); S13: the control module (60) obtains the maximum flow rate of the first gas flowing through the measured gas flow detector (71), the maximum flow rate of the first gas flowing through the measured gas flow detector (71) being the maximum gas extraction flow rate of the gas analyzer (200), and the maximum gas extraction flow rate is used as the first flow rate V1; S14: disconnecting the connection between the gas analyzer (200) and the measured gas flow detector (71).

4. The control method of the gas output device according to claim 3, characterized in that: The gas output device (100) further comprises: A first connecting component (35) connected to the gas outlet (333) of the connecting module (33), the first connecting component (35) being used for detachably connecting to the probe (210) of the gas analyzer (200); and A second connecting component (72) is connected to the output end of the measured gas flow detector (71), and the first connecting component (35) is used to be detachably connected to the probe (210) of the gas analyzer (200); Wherein, step S11 comprises: Connecting the second connecting component (72) and the probe (210) of the gas analyzer (200) to connect the output end of the measured gas flow detector (71) and the probe (210) of the gas analyzer (200); Wherein, step S14 comprises: Separating the second connecting component (72) and the probe (210) of the gas analyzer (200) to disconnect the connection between the probe (210) of the gas analyzer (200) and the measured gas flow detector (71); Wherein, step S30 includes: The probe (210) of the gas analyzer (200) is connected to the first connecting component (35) to connect the probe (210) of the gas analyzer (200) and the gas outlet (333).

5. The control method of the gas output device according to claim 1 or 2, characterized in that: The gas output device (100) further comprises an input module (120) electrically connected to the control module (60); The step S10 comprises: S15: The control module (60) obtains the first flow rate V1 manually input from the input module (120).

6. The control method of the gas output device according to claim 1 or 2, characterized in that: The method also includes: S50: The gas analyzer (200) detects the target gas.

7. A gas output device, characterized in that: include: A target gas component (110), used for outputting the target gas; A connection module (33), comprising an air inlet (332), an air outlet (333) and a diversion port (334) which are interconnected, wherein the air inlet (332) is connected to an output end of the target gas component (110), and the air outlet (333) is used for detachably connecting to a gas analyzer (200) to be measured; a one-way valve (34), connected to the diversion port (334), the one-way valve (34) being used to discharge excess target gas from the diversion port (334) to the outside and prevent external gas from flowing back into the diversion port (334); and A control module (60) electrically connected to the target gas component (110); The control module (60) is used to obtain a first flow rate V1, wherein the first flow rate V1 is a maximum gas extraction flow rate of the gas analyzer (200); After the control module (60) acquires the first flow rate V1, the control module (60) sets the flow rate of the target gas output by the target gas component (110) to a second flow rate V2 according to the first flow rate V1, wherein V2 ≥ V1; When the gas analyzer (200) is connected to the gas outlet (333) of the connection module (33), the control module (60) controls the target gas component (110) to output the target gas to the gas inlet (332) of the connection module (33) according to the second flow rate V2.

8. The gas output device according to claim 7, characterized in that: The temperature of the target gas is greater than 100°C.

9. The gas output device according to claim 7 or 8, characterized in that: Also includes: A measured gas flow detector (71), wherein an input end of the measured gas flow detector (71) is in communication with a first gas source (80), an output end of the measured gas flow detector (71) is used for being detachably connected to a gas analyzer (200), and the measured gas flow detector (71) is electrically connected to the control module (60); When the output end of the measured gas flow detector (71) is connected to the gas analyzer (200), the gas analyzer (200) extracts the first gas from the first gas source (80), and the control module (60) obtains the maximum flow rate of the first gas flowing through the measured gas flow detector (71). The maximum flow rate of the first gas flowing through the measured gas flow detector (71) is the maximum gas extraction flow rate of the gas analyzer (200), and the maximum gas extraction flow rate is used as the first flow rate V1.

10. The gas output device according to claim 9, characterized in that: Also includes: A first connecting component (35) connected to the gas outlet (333) of the connecting module (33) and used for detachably connecting to a probe (210) of a gas analyzer (200); and A second connecting component (72) connected to the output end of the measured gas flow detector (71) and used for being detachably connected to a probe (210) of a gas analyzer (200); When the gas output device (100) and the gas analyzer (200) are connected, one of the first connecting component (35) and the second connecting component (72) is connected to a probe (210) of the gas analyzer (200).

11. The gas output device according to claim 7 or 8, characterized in that: It also includes an input module (120), wherein the input module (120) is electrically connected to the control module (60), and the control module (60) is used to obtain the first flow rate V1 manually input from the input module (120).

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