TWM638000U - Gas detection system - Google Patents

Abstract

A gas detection system includes a cabinet, a pipeline module, a gas analyzer, a valve assembly and a control unit. The pipeline module is provided with a pipeline set, a gas inlet and an outlet, and the pipeline set is located in the cabinet and respectively connected to the gas inlet and the outlet. The gas inlet is used to inject a detected gas from the outside. The outlet is used to exhaust the detected gas. The gas analyzer is in the cabinet, and connected to the pipeline set to analyze the detected gas collected from the pipeline set. The valve assembly is on the pipeline set, and is used to reversibly cut off the connection between the gas inlet and the gas analyzer. The control unit is electrically connected to the valve assembly for electrically switching of the valve assembly. Through the system integration of the analyzer, the problem of repeated sampling and transferring to specific equipment is solved in the conventional technology, which not only saves the time for multiple testing and analysis, but also reduces the risk of gas leakage from the gas cylinder to be tested.

Description

Gas detection system

The invention relates to a detection system, especially a gas detection system.

According to, gas detection and analysis is an important means for detecting the existence and concentration of certain chemical gases and determining their chemical combination. At present, most of the gas detection methods are manually sampled from the gas cylinders to be tested, and then manually moved to the analysis equipment for specific analysis items for gas detection and analysis.

However, in the face of various analysis items, the above gas detection method not only needs to repeat the sampling each time and move to a specific analysis equipment, so it needs to spend multiple times of sending and analysis time, and it is also easy to take frequent samples of the gas cylinder to be tested. The risk of gas leakage is caused, which is time-consuming and inconvenient.

This shows that the above-mentioned technology obviously still has inconvenience and defective, and needs to be further improved. Therefore, how to effectively solve the above-mentioned inconveniences and defects is one of the current important research and development issues, and has become an urgent need for improvement in related fields.

One purpose of the present invention is to provide a gas detection system to solve the difficulties mentioned above in the prior art.

One embodiment of the present invention provides a gas detection system. The gas detection system includes a cabinet, a pipeline module, at least one gas analyzer, a valve assembly and a control unit. The pipeline module has a pipeline group, a first gas injection nozzle and an exhaust port. The pipeline group is installed in the cabinet and connected to the first gas injection nozzle and the exhaust port respectively. The first gas injection nozzle is used for injecting a test gas from the outside, and the exhaust port is used for discharging the test gas. The gas analyzer is installed in the cabinet and connected to the pipeline group to analyze the measured gas obtained from the pipeline group. The valve assembly includes at least one first valve. The first valve element is installed on the pipeline set and interposed between the first gas injection nozzle and the gas analyzer, and is used for reversibly cutting off the communication between the first gas injection nozzle and the gas analyzer. The control unit is electrically connected to the first valve part and is used for controlling the switch of the first valve part.

In this way, through the structures described in the above embodiments, this creation can integrate one or more analyzers into a system, which not only saves the time for multiple testing and analysis, but also reduces the gas leakage caused by the gas cylinder to be tested risk.

The above description is only used to explain the problem to be solved by this creation, the technical means to solve the problem, and its effects, etc. The specific details of this creation will be introduced in detail in the following implementation methods and related drawings.

A plurality of embodiments of the invention will be disclosed with diagrams below. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in the various embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known structures and components will be shown in a simple and schematic manner in the drawings.

Fig. 1 is a simplified schematic diagram of the gas detection system 10 of the present invention. As shown in FIG. 1 , the gas detection system 10 includes a cabinet 100 , a pipeline module 200 , a gas analyzer 600 , a valve assembly 700 and a central control system 900 . The pipeline module 200 has a pipeline set 210 , a first gas injection nozzle 510 and an exhaust port 560 . The first gas injection nozzle 510 and the exhaust port 560 are respectively fixed on the surface of the cabinet body 100 , and the pipeline set 210 is fixed inside the cabinet body 100 . One end of the pipeline set 210 is connected to the first gas injection nozzle 510 , and the other end is connected to the exhaust port 560 . The first gas injection nozzle 510 is used to inject a test gas from the outside, and the exhaust port 560 is used to discharge the test gas. For example, the first gas injection nozzle 510 is used to connect to a steel cylinder C containing the gas to be tested or an external gas pipe (not shown in the figure), and the exhaust port 560 is used to connect to a ventilation device V or an external gas pipe (not shown in the figure), the measured gas described in this embodiment is, for example, hydrogen chloride (HCl), chlorine (Cl2), nitrogen (N2), oxygen (O2), helium (He), argon (Ar), hexa Fluorobutadiene (C4F6), difluoromethane (CH2F2), fluoromethane (CH3F), octafluorocyclobutane (C4F8), trifluoromethane (CHF3), hydrofluoric acid (HF), tungsten hexafluoride (WF6 ), dichlorosilane (SiH2Cl2), monosilane (SiH4) and other gases, however, the invention is not limited thereto.

The gas analyzer 600 is installed in the cabinet 100 and connected to a part of the pipeline set 210 . The valve assembly 700 includes a front valve 710 and a rear valve 720 . The front valve 710 is installed on the pipeline set 210 between the first gas injection nozzle 510 and the gas analyzer 600 for cutting off or restoring the communication between the first gas injection nozzle 510 and the gas analyzer 600 . The rear valve 720 is installed on the pipeline set 210 between the exhaust port 560 and the gas analyzer 600 for cutting off or restoring the communication between the exhaust port 560 and the gas analyzer 600 .

The central control system 900 includes a control unit 910 , a logic circuit 920 and an operation panel 930 . The control unit 910 is electrically connected to the logic circuit 920 and the operation panel 930 , and the control unit 910 automatically executes a specific detection program according to the program content of the logic circuit 920 , and reports the detection result through the operation panel 930 . More specifically, the control unit 910 is electrically connected to the front valve part 710 and the rear valve part 720 to control the opening and closing of the front valve part 710 and the rear valve part 720 respectively. The operation panel 930 is electrically connected to the gas analyzer 600, and is used to instruct the switch of the front valve 710 and the rear valve 720 through the control unit 910, and transmit the analysis data output by the gas analyzer 600 to the display screen or data of the operation panel 930 library (not shown in the figure). For example, the central control system 900 is located on the cabinet body 100, however, the present invention is not limited thereto.

In this way, when the gas detection system 10 intends to perform a gas analysis program, the control unit 910 can open the front valve 710 and the rear valve 720 through the automatic execution of the above program content; The first gas injection nozzle 510 is introduced into the pipeline set 210 , and after passing through the gas analyzer 600 , the gas analyzer 600 analyzes the measured gas obtained from the pipeline set 210 and transmits the analysis data to the central control system 900 .

Conversely, when the gas analysis program is completed, the control unit 910 closes the front valve 710 and the rear valve 720 through the automatic execution of the above program content. Therefore, the measured gas is blocked and cannot be conducted to the gas analyzer 600 . However, the present invention is not limited thereto. In other embodiments, the operator is also allowed to manually instruct the control unit 910 to execute or terminate the above-mentioned gas analysis program through the operation panel 930 .

In addition, the gas detection system 10 includes a first air pressure sensor 810 and a flow control element 860 . The first air pressure sensor 810 is installed on the pipeline set 210 between the rear valve 720 and the gas analyzer 600 for sensing the pressure inside the pipeline set 210 . The first air pressure sensor 810 is further electrically connected to the operation panel 930 and the control unit 910, and displays the sensing result of the first air pressure sensor 810 on the display panel of the operation panel 930, however, the invention is not limited thereto. The flow control element 860 is installed on the pipeline set 210 , and is used for adjusting the internal pressure of the pipeline set 210 in response to the sensing result of the first air pressure sensor 810 .

In this way, by adjusting the internal pressure of the pipeline group 210 through the flow control element 860, the gas detection system 10 can allow the gas under test to be automatically sampled into the gas analyzer 600, so that the gas analyzer 600 can maintain stable operation, thereby saving multiple testing times And analysis time, and can also reduce the risk of gas leakage caused by the gas cylinder to be tested.

FIG. 2 is a pipeline structure diagram of a gas detection system 11 according to an embodiment of the invention. FIG. 3 is an electronic block diagram of the gas detection system 11 in FIG. 2 . As shown in Figure 2 and Figure 3, the gas detection system 11 of this embodiment is roughly the same as the above, the difference is that the gas detection system 11 of this embodiment can perform automatic flushing, replacement, and standard gas before gas analysis. Base point calibration and calibration line calibration, and then the same gas (such as the gas to be measured) can be introduced into multiple gas analyzers 600 synchronously or sequentially according to the requirements of the analysis instrument, so as to accept their respective detection and analysis. By controlling the ambient atmosphere during analysis, Micro Motion can achieve accurate analysis results, thereby reducing the value of human error and achieving the purpose of multiple analysis of the same gas.

More specifically, in this embodiment, the pipeline set 210 of the gas detection system 11 further includes a front pipeline 211 , a rear pipeline 212 and multiple (eg four) branch pipelines 213 . The front pipeline 211 is connected to the first gas injection nozzle 510 . The rear pipeline 212 is connected to the exhaust port 560 . The branch pipelines 213 are located between the front pipeline 211 and the rear pipeline 212 , and each branch pipeline 213 communicates with the front pipeline 211 and the rear pipeline 212 respectively. In addition, the gas detection system 11 has multiple gas analyzers 600 (eg, four), multiple first front valve elements 731 (eg, four) and multiple first rear valve elements 732 (eg, four). One of the gas analyzers 600, the first front valve 731 and the first rear valve 732 are installed on each branch pipeline 213, and the gas analyzer 600 on the same branch pipeline 213 is located at the corresponding first front Between the valve element 731 and the first rear valve element 732 .

The gas detection system 11 includes an analysis accessory 440 and a seventh gas injection nozzle 580 . The seventh gas injection nozzle 580 is fixed on the surface of the cabinet body 100 . The pipeline module 200 has a fifth external pipeline 260 connected to the analysis accessory 440 and the seventh gas injection nozzle 580 . The seventh gas injection nozzle 580 is used for connecting a steel cylinder C containing the gas to be tested or an external gas pipe (not shown in the figure). The seventh gas injection nozzle 580 is used for injecting a diluent gas from the outside, and the diluent gas flows to the analysis accessory 440 along the fifth external pipeline 260 . For example, the analysis accessory 440 is a mixing device capable of receiving diluent gas and standard gas and mixing them to produce mixed gases in different proportions, and the diluent gas herein is nitrogen (N2), helium (He), argon (Ar) and other gases. The valve assembly 700 includes a fifth valve 763 installed on the fifth external pipeline 260 and electrically connected to the control unit 910 to cut off or restore the analysis accessory 440 and the seventh gas injection nozzle 580 China Unicom.

More specifically, the calibration of the reference point of the standard gas is carried out, for example, by first opening the fifth branch valve 775, closing the specific first front valve 731, and injecting the standard gas into the specific gas analyzer 600 through the sixth gas injection nozzle 570. . To execute the calibration curve calibration, for example, first open the fourth front valve 761, the fourth rear valve 762, the fifth valve 763 and the third branch valve 773, and inject a standard gas into the analysis through the fourth gas injection nozzle 540 In the accessories 440, the seventh gas injection nozzle 580 injects different proportions of diluted standard gases, and introduces them into the gas analyzer 600 for making calibration curves. It should be understood that those with ordinary knowledge in the field of this invention can pre-install the above-mentioned pipeline structure before a specific gas analyzer according to requirements or restrictions.

Therefore, when the gas detection system 11 intends to perform multiple gas analysis, through the automatic execution of the above-mentioned program content, the control unit 910 instructs the flow control element 860 to operate in response to the pressure value sensed by the first air pressure sensor 810 so that the gas to be tested automatically flows from The first gas injection nozzle 510 enters the front pipeline 211 and reaches the branch pipelines 213 along the front pipeline 211 . Then, the control unit 910 can choose to synchronously or sequentially open one, several or all of the first front valve 731 and the first rear valve 732 provided on the branch pipeline 213, so that the gas under test can flow along the above-mentioned one or Multiple branch pipelines 213 reach the corresponding gas analyzers 600 . However, the present invention is not limited thereto. In other embodiments, the operator is also allowed to manually instruct the control unit 910 (FIG. 1 ) to execute or terminate the above gas analysis program through the operation panel 930 .

It should be understood that these gas analyzers 600 are not limited to have the same or different analysis functions. For example, the analysis items are as follows, gas water content, gas purity ratio, gas specific gravity, gas chromatography, gas suspended particles, micro-content Gas detection and the like, however, the invention is not limited thereto.

Furthermore, the gas detection system 11 includes a second air pressure sensor 820 installed on the front pipeline 211 . The valve assembly further includes a second front valve 741 and a second rear valve 742 disposed on the front pipeline 211 . The second front valve element 741 is interposed between the first air injection nozzle 510 and the second air pressure sensor 820 , and the second rear valve element 742 is interposed between the second air pressure sensor 820 and the first front valve element 731 . The second air pressure sensor 820 is located between the second front valve part 741 and the second rear valve part 742 and is used for sensing the internal pressure of the pipeline set 210 between the second front valve part 741 and the second rear valve part 742 . The second front valve element 741 is used to cut off or restore the communication between the first gas injection nozzle 510 and the second air pressure sensor 820 . The second rear valve element 742 is used to cut off or restore the communication between the first gas injection nozzle 510 and the branch pipeline 213 .

The pipeline module further includes one or more (eg, two) second gas injection nozzles 520 . The pipeline set 210 further includes a branch pipeline 214 and a first external pipeline 220 . Two ends of the branch pipeline 214 are respectively connected to the front pipeline 211 and the rear pipeline 212 , that is, any gas in the front pipeline 211 can be discharged from the exhaust port 560 without going through the branch pipeline 213 . For example, the second gas injection nozzles 520 are respectively or jointly connected with an automatic blowing device B.

One end of the first external pipe 220 is connected to the front pipe 211 , and the other end is respectively connected to the second gas injection nozzles 520 in the form of branch pipes. The valve assembly further includes two third front valve parts 751 and a third rear valve part 752 mounted on the first external pipe 220 . The third front valve parts 751 are respectively electrically connected to the control unit 910 , and each third front valve part 751 is used to cut off or restore the communication between the front pipeline 211 and the second gas injection nozzle 520 . The gas detection system 11 includes a third air pressure sensor 830 installed on the first external pipeline 220 . The third air pressure sensor 830 is located between the third front valve part 751 and the third rear valve part 752, and is used for sensing the connection between the first external pipeline 220 and the third front valve part 751 and the third rear valve part 752. internal pressure.

The valve assembly further includes a first branch valve 771 and a plurality of second branch valves 772 disposed on the branch pipeline 214 . The first branch valve 771 is electrically connected to the control unit 910 for cutting off or restoring the communication between the rear pipeline 212 and the front pipeline 211 . The gas detection system 11 includes a fourth air pressure sensor 840 installed on the front pipeline 211 . The fourth air pressure sensor 840 is located upstream of the first branch valve 771 and is used for sensing the pressure in the branch line 214 .

Moreover, the pipeline module further includes a plurality of third gas injection nozzles 530 , the pipeline set 210 further includes a plurality of second external pipelines 230 , and the valve assembly further includes a plurality of second branch valves 772 . Each second external pipeline 230 communicates with one of the third gas injection nozzles 530 and one of the branch pipelines 213 , and these second branch valves 772 are installed on the second external pipeline 230 respectively, and are electrically connected to the control unit 910 , used to cut off or restore the communication between the branch pipeline 213 and the third gas injection nozzle 530 . Each of the third gas injection nozzles 530 is used for injecting a maintenance gas from the outside, so that the gas analyzer 600 can perform equipment maintenance when gas analysis is not performed. The curing gas flows along the corresponding branch pipeline 213 to the corresponding gas analyzer 600 . For example, the third gas injection nozzle 530 is used to connect a steel cylinder containing curing gas or an external gas pipe (not shown in the figure), and the curing gas herein is, for example, nitrogen (N2), helium (He), argon (Ar) and other gases, however, the present invention is not limited thereto.

In this way, when the gas detection system 11 intends to perform the maintenance procedure of the gas analyzer 600, the control unit 910 selects to close all the first front valves 731 and open all the second branch valves 772 and the first rear valve through the automatic execution of the above program content. Valve 732; then, the control unit 910 instructs the flow control element 860 to operate according to the value of the first air pressure sensor 810, controls the internal pressure of the rear pipeline 212, and opens the second branch valve 772 to instruct the curing gas to be injected by the third The gas nozzle 530 is sent to the corresponding gas analyzer 600 along these branch pipelines 213, so that the gas analyzer 600 is maintained; in addition, the third rear valve 752 is controlled to be closed, and the ventilation device V is continuously sucked from the exhaust port 560. gas. However, the present invention is not limited thereto. In other embodiments, the operator is also allowed to manually instruct the control unit 910 (FIG. 1 ) to execute or terminate the maintenance procedure of the analyzer through the operation panel 930 .

Afterwards, when the gas detection system 11 intends to perform a pipeline cleaning procedure, the control unit 910 selects to close all the first front valve 731 and the second rear valve 742 and open the third front valve 751 and the second valve through the automatic execution of the above program content. Three rear valve parts 752 and the first branch valve part 771; then, wait for the fourth air pressure sensor 840 to detect that the front pipeline 211 is a vacuum, and instruct to open the third rear valve part 752 and allow the automatic blowing device B to inject a The cleaning gas (or purge gas) is sent to the first external connection pipeline 220 and discharged from the exhaust port 560 through the diversion pipeline 214 so as to clean the inside of the pipeline group 210 before the pipeline 211 and the diversion pipeline 214 . For example, the cleaning gas is nitrogen (N2), helium (He), argon (Ar), etc., however, the invention is not limited thereto.

In this way, since the gas detection system 11 can automatically flush the pipelines, cross-contamination between pipelines can be avoided. However, the present invention is not limited thereto. In other embodiments, the operator is also allowed to manually instruct the control unit 910 (FIG. 1 ) to execute or terminate the above pipeline cleaning procedure through the operation panel 930 .

The pipeline module further includes one or more (eg, two) fourth gas injection nozzles 540 . The pipeline set 210 further includes a calibration pipeline set 400, which is used for a specific gas analyzer 600 that needs to make an analytical calibration curve. The calibration pipeline group 400 is respectively connected to the fourth gas injection nozzle 540 , a specific one of the branch pipelines 213 and the rear pipeline 212 . In this embodiment, the branch pipeline 213 is located in the section between the specific gas analyzer 600 and the specific first front valve 731 . Any fourth gas injection nozzle 540 is used to inject a standard gas from the outside, through the main channel 410 to the analysis fitting 440, and the dilution gas passes through the fifth valve 763 from the seventh gas injection nozzle 580 to the analysis fitting 440, and the control unit 910 instructs The analysis accessory 440 mixes a variety of diluted standard gases with specific concentrations, and then enters the specific gas analyzer 600 through the first channel 420 and the branch pipeline 213, so as to establish a calibration line, and the gas is then self-exhausted Port 560 exits. For example, the fourth gas injection nozzle 540 is used to connect a steel cylinder C containing standard gas or an external gas pipe (not shown in the figure), and the diluted gas enters the analysis fitting 440 from the fifth external pipeline 260, and is mixed in sequence Diluted standard gases of different concentrations are passed into a specific gas analyzer 600 to establish a calibration line, and the standard gases described in this embodiment are, for example, hydrogen chloride (HCl), chlorine (Cl2), nitrogen (N2), oxygen (O2 ), helium (He), argon (Ar), hexafluorobutadiene (C4F6), difluoromethane (CH2F2), fluoromethane (CH3F), octafluorocyclobutane (C4F8), trifluoromethane (CHF3), Hydrofluoric acid (HF), tungsten hexafluoride (WF6), dichlorosilane (SiH2Cl2), monosilane (SiH4) and other gases; diluent gases such as: helium (He), nitrogen (N2), argon (Ar) Wait for gas. However, the present work is not limited thereto. It should be understood that those with ordinary knowledge in the field of this invention can pre-install the above-mentioned pipeline structure before a specific gas analyzer according to requirements or restrictions.

In this way, when the gas detection system 11 intends to perform the calibration curve calibration procedure of the gas analyzer 600, the control unit 910 selects to close the corresponding first front valve 731 and the second rear valve 742 and open them through the automatic execution of the above program content. The fourth front valve 761, the fourth rear valve 762, and the third branch valve 773; then, the control unit 910 instructs the flow control element 860 to operate and introduce standard gas from the fourth gas injection nozzle 540 to the corresponding main channel 410 to enter Analyzing accessory 440, and opening the fifth valve 763 to allow the diluted gas to enter the analyzing accessory 440 through the fifth external pipeline 260, the control unit 910 instructs the analyzing accessory 440 to prepare a variety of standard gases diluted in different mixing ratios according to the requirements of the calibration line. The first channel 420 and the branch pipeline 213 enter the gas analyzer 600 to establish the calibration curve. Afterwards, the analyzed gas is discharged from the exhaust port 560 through the latter pipeline 212 for corresponding gas analysis. Instrument 600 performs calibration curve calibration. However, the present invention is not limited thereto. In other embodiments, the operator is also allowed to manually instruct the control unit 910 (FIG. 1 ) to execute or terminate the above calibration procedure through the operation panel 930 .

More specifically, the calibration pipeline set 400 includes a main channel 410 , a primary channel 420 and a second secondary channel 430 . One end of the main channel 410 is connected to the fourth gas injection nozzles 540 in the form of a branch pipe, and the other end is connected to the analysis accessory 440 . The first channel 420 is respectively connected to the analysis accessory 440 and the aforementioned branch pipeline 213 , and the second channel 430 is respectively connected to the main channel 410 and the rear pipeline 212 . The valve assembly further includes two fourth front valve parts 761 , a fourth rear valve part 762 , a third branch valve part 773 and a fourth branch valve part 774 . The third branch valve 773 is installed on the primary channel 420 and is electrically connected to the control unit 910 for cutting off or restoring the communication between the calibration pipeline set 400 and the aforementioned branch pipeline 213 . fourth point The branch valve 774 is installed on the second channel 430 and is electrically connected to the control unit 910 for cutting off or restoring the communication between the calibration pipeline set 400 and the rear pipeline 212 . The fourth front valve part 761 and the fourth rear valve part 762 are installed on the calibration pipeline set 400 . The fourth front valve parts 761 are respectively electrically connected to the control unit 910 , and each fourth front valve part 761 is used to cut off or restore the communication between the calibration pipeline set 400 and the fourth gas injection nozzle 540 . The gas detection system 11 includes a fifth air pressure sensor 850 . The fifth air pressure sensor 850 is located between the fourth front valve part 761 and the fourth rear valve part 762, and is used to sense the calibration pipeline set 400 in the tube between the fourth front valve part 761 and the fourth rear valve part 762. pressure. In this way, the gas detection system 11 can automatically control the introduction of a blank sample gas (such as a standard gas) to automatically sample the blank sample gas to avoid analysis error values and build a pipeline system (such as a panel system) for the exhaust gas refilling part to avoid After analysis, the exhaust gas is recirculated to the gas analyzer 600 .

In addition, the pipeline module further includes a fifth gas injection nozzle 550 , and the pipeline set 210 further includes a third external pipeline 240 . The third external pipeline 240 communicates with the main channel 410 and the fifth gas injection nozzle 550, and the fifth gas injection nozzle 550 is used for injecting a cleaning gas (or purging gas) from the outside, and the cleaning gas passes along the third external pipeline. 240 and the second channel 430 to flow to the exhaust port 560 for cleaning and purging the calibration pipeline. For example, the fifth gas injection nozzle 550 may also be connected to the above-mentioned automatic blowing device B or similar devices for outputting cleaning gas to the third external pipeline 240, the main channel 410 and the second channel 430, and from The exhaust port 560 is exhausted, and the cleaning gas is, for example, nitrogen (N 2 ), helium (He), argon (Ar), etc., however, the present invention is not limited thereto. The valve assembly further includes a sixth branch valve 776, the sixth branch valve 776 is installed on the third external pipeline 240, and is electrically connected to the control unit 910, and is used to cut off or restore the connection between the main channel 410 and the fifth injector. The connection of gas nozzle 550. It should be understood that the procedure of cleaning the pipeline through the fifth gas injection nozzle 550 and the third external pipeline 240 is roughly similar to the procedure of cleaning the pipeline through the second gas injection nozzle 520 and the front pipeline 211. Therefore, This will not be repeated here.

In addition, in this embodiment, the gas injection nozzles 510 , 520 , 530 , 540 , 550 , 570 , 580 and the exhaust port 560 are respectively fixed on the surface of the cabinet body 100 , however, the invention is not limited thereto.

It should be understood that the representation form of the pipeline group 210 in the figure is only for illustration, and is not limited to its appearance. In addition, in the above-mentioned embodiments, the pipeline set 210 is, for example, represented by a hard pipe or a flexible pipe, however, the present invention is not limited thereto. Also, in the above-mentioned embodiments, the flow control element 860 is a mass flow controller (Mass Flow Controller, MFC) or a mass flow meter (Mass Flow Meter, MFM), which is an instrument for accurately measuring gas flow, which not only has the function of measuring The flow function can also control the gas flow.

As shown in FIG. 3 , the gas detection system further includes a heating module 870 . The heating module 870 is used to heat the pipeline group 210 before gas analysis, so as to eliminate moisture in the pipeline and improve the accuracy of gas analysis, thereby making the overall process smoother. However, the present invention is not limited thereto, and in other embodiments, it is also possible to allow the pipeline group 210 to be heated in the whole process or in other time frames.

In the above-mentioned embodiments, the operation method of the gas detection system is roughly to blow and replace the internal body of the pipeline. After the internal body of the pipeline is blown and replaced, the standard gas is automatically introduced to calibrate the detection instrument. After the calibration of the analytical instrument is completed, start The gas to be tested is introduced in order to detect and analyze the gas characteristics. At the same time, in the analysis of the exhaust gas part, the pressure sensing element and the flow control element are used to control the gas environment at the exhaust gas end, so as to avoid the analysis distortion caused by the exhaust gas backfilling the analysis instrument. After the analysis is completed, the analysis data is sent back to the central control system or other computer systems.

FIG. 4 is a flowchart of a gas detection method of a gas detection system according to an embodiment of the invention. As shown in FIG. 4 , the gas detection method includes steps 501 to 507 as follows. In step 501, the pipeline module is cleaned and the gas analyzer is maintained. In step 502, a negative pressure is generated in the tube, and the gas in the tube is removed. In step 503, a standard gas is introduced to perform gas analyzer calibration. In step 504, the pipeline module is cleaned and the gas analyzer is maintained. In step 505, a negative pressure is generated in the tube, and the gas in the tube is removed. In step 506, the gas to be tested is injected into each gas analyzer sequentially or synchronously. In step 507, the gas analyzer analyzes the gas to be tested, and outputs the analysis data of the gas analyzer.

In steps 501 and 504, more specifically, a cleaning gas (or purge gas) is injected into the pipeline module to clean a part of the pipeline module, and a curing gas is respectively injected from these branch pipelines into the corresponding To maintain the corresponding gas analyzer. In steps 502 and 505, more specifically, the pressure inside the pipeline module is reduced to negative pressure, so as to discharge the cleaning gas and maintenance gas out of the pipeline module. Furthermore, in steps 502 and 505, the tube pressure in the tube module is sensed, and then, the tube pressure of the tube module is adjusted correspondingly according to the sensed tube pressure. In step 503, more specifically, a standard gas is injected into one of the gas analyzers for calibration of the gas analyzer; then, a cleaning gas (or purge gas) is injected into the pipeline module for cleaning A part of the pipeline module; then, inject a curing gas from these branch pipelines to the corresponding gas analyzers respectively, so as to maintain the corresponding gas analyzers. In steps 506 to 507, more specifically, a test gas is injected into the pipeline module of the gas detection system, and the valves set on one, several or all branch pipelines are selected to be opened synchronously or sequentially, so that The gas under test reaches the corresponding gas analyzer along the above-mentioned one or more branch pipelines; then, the gas analyzer analyzes the gas under test obtained from the branch pipeline, and outputs the analysis data of the gas under test; Gas exhaust pipeline module.

In this embodiment, before step 506, the method further includes heating the pipeline module of the gas detection system. More specifically, the step of heating the pipeline module of the gas detection system further includes several steps as follows. The pipeline module of the gas detection system is heated by a high-frequency heating coil. Through a hot air device, hot air is sent into the air gap in the pipe separated between the inner pipe and the outer pipe of the pipeline module.

In this way, through the structures described in the above embodiments, this creation can integrate one or more analyzers into a system, which not only saves the time for multiple testing and analysis, but also reduces the gas leakage caused by the gas cylinder to be tested risk.

Finally, the embodiments disclosed above are not intended to limit this creation. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of this creation, and all of them can be protected in this creation. creation. Therefore, the scope of protection of this creation should be defined by the scope of the attached patent application.

10, 11: Gas detection system 100: Cabinet 200: pipeline module 210: pipeline group 211: front pipeline 212: Rear pipeline 213: branch pipeline 214: shunt pipeline 220: The first external pipeline 230: the second external pipeline 240: The third external pipeline 260: The fifth external pipeline 400: Correction pipeline group 410: main channel 420: first pass 430:Second channel 440: Analysis Accessories 501~507: steps 510: The first gas injection nozzle 520: Second gas injection nozzle 530: The third gas injection nozzle 540: The fourth gas injection nozzle 550: Fifth gas injection nozzle 560: exhaust port 570: The sixth injection nozzle 580: The seventh gas injection nozzle 600: Gas analyzer 700: valve assembly 710: front valve 720: rear valve 731: The first front valve 732: the first rear valve 741: the second front valve 742: second rear valve 751: The third front valve 752: The third rear valve 761: The fourth front valve 762: The fourth rear valve 763: fifth valve 771: The first branch valve 772: The second branch valve 773: The third branch valve 774: The fourth branch valve 775: The fifth branch valve 776: The sixth branch valve 810: the first air pressure sensor 820: Second air pressure sensor 830: The third air pressure sensor 840: The fourth air pressure sensor 850: Fifth air pressure sensor 860: flow control element 870: heating module 900: central control system 910: control unit 920: Logic Circuits 930: operation panel B: Automatic blowing device C: cylinder D: Direction V: ventilation equipment

In order to make the above-mentioned and other purposes, features, advantages and embodiments of this creation more obvious and easy to understand, the description of the accompanying drawings is as follows: Figure 1 is a simple schematic diagram of the gas detection system of this creation; Figure 2 is a pipeline structure diagram of a gas detection system according to an embodiment of the invention; Figure 3 is an electronic block diagram of the gas detection system in Figure 2; and FIG. 4 is a flowchart of a gas detection method of a gas detection system according to an embodiment of the invention.

10: Gas detection system

100: Cabinet

200: pipeline module

210: pipeline group

510: The first gas injection nozzle

560: exhaust port

600: Gas analyzer

700: valve assembly

710: front valve

720: rear valve

810: the first air pressure sensor

860: flow control element

900: central control system

910: control unit

920: Logic Circuits

930: operation panel

C: cylinder

D: Direction

V: ventilation equipment

Claims (9)

A gas detection system comprising: a cabinet; A pipeline module, with a pipeline group, a first gas injection nozzle and an exhaust port, the pipeline group is installed in the cabinet, respectively connected to the first gas injection nozzle and the exhaust port, the first injection nozzle The gas nozzle is used to inject a test gas from the outside, and the exhaust port is used to discharge the test gas; At least one gas analyzer installed in the cabinet and connected to the pipeline group to analyze the measured gas obtained from the pipeline group; A valve assembly, including at least one first valve, installed on the pipeline set, and interposed between the first gas injection nozzle and the gas analyzer, for reversibly shutting off the communication between the first gas injection nozzle and the gas analyzer; and A control unit, electrically connected to the first valve, is used to control the switch of the first valve. The gas detection system as described in claim 1, wherein the pipeline group includes: A front pipeline connected to the first gas injection nozzle; a rear pipeline connected to the exhaust port; and A plurality of branch pipelines are located between the front pipeline and the rear pipeline, each of the branch pipelines communicates with the front pipeline and the rear pipeline, Wherein the at least one gas analyzer and the at least one first valve are multiple, and each of the gas analyzers and one of the first valves are installed in the branch pipelines together One, each of the first valves is used to reversibly cut off the connection between the front pipeline and the corresponding gas analyzer, Wherein when the gas under test enters the branch pipelines along the front pipeline, the control unit can open at least one of the first valves, so that the gas under test can flow along at least one of the corresponding first valves. The branch pipeline of a valve element reaches the corresponding gas analyzer. The gas detection system as described in claim 2, wherein the pipeline module further includes at least one second gas injection nozzle, and the pipeline set further includes a split pipeline and a first external pipeline, and the split pipelines are respectively connected to The front pipeline and the rear pipeline, the first external pipeline are respectively connected to the front pipeline and the second gas injection nozzle; and The valve assembly further includes a second valve installed on the first external pipeline and electrically connected to the control unit for reversibly cutting off the front pipeline from the second injector. Air mouth Unicom. The gas detection system as described in claim 3 further includes: an automatic blowing device, connected to the second gas injection nozzle, for injecting a clean gas from the outside, Wherein when the control unit closes the first valves and opens the second valves, the automatic blowing device injects the cleaning gas from the second gas injection nozzle into the first external pipeline, and passes through the shunt pipe The road is discharged from the exhaust port. The gas detection system as described in claim 2 further includes: An air pressure sensor installed on the rear pipeline to sense the internal pressure of the rear pipeline; and A flow control element is installed on the rear pipeline, and is used to adjust the internal pressure of the rear pipeline correspondingly in response to the sensing result of the air pressure sensor. The gas detection system as described in claim 2, wherein the pipeline module further includes a plurality of third gas injection nozzles, the pipeline group further includes a plurality of second external pipelines, each of these second external pipelines One of them communicates with one of the third gas injection nozzles and one of the branch pipelines respectively, each of the third gas injection nozzles is used for injecting a curing gas from the outside to the gas corresponding to it Analyzer, and exhausted from the exhaust port; and The valve assembly further includes a plurality of third valves, the third valves are respectively installed on the second external pipes, and are electrically connected to the control unit, so as to reversibly cut off the branch pipe and the branch pipe. The connection of the third gas injection nozzle, Wherein when the control unit opens the third valves and closes the first valves, the curing gas is sent to the gas analyzers and discharged from the exhaust port. The gas detection system as described in claim 1, wherein the pipeline module further includes a fourth gas injection nozzle, and the pipeline group further includes a calibration pipeline group, one end of the calibration pipeline group is connected to the fourth gas injection nozzle The other end is connected to the section of the pipeline set between the gas analyzer and the first valve, and the fourth gas injection nozzle is used for injecting a standard gas from the outside, through the calibration pipeline set to the a gas analyzer and exits from the exhaust port; and The valve assembly further includes a fourth valve, which is installed on the calibration pipeline set and is electrically connected to the control unit for reversibly cutting off the fourth gas injection nozzle from the gas Analyzer connectivity, Wherein when the control unit opens the fourth valve and closes the first valve, the standard gas can be sent to the gas analyzer for calibration of the gas analyzer. The gas detection system as described in claim 1 further includes: A heating module is used for heating the pipeline module. The gas detection system as described in claim 1 further includes: An operation panel, located on the cabinet body, electrically connected to the control unit and the gas analyzer, is used to instruct the valve assembly to operate through the control unit, and to display the analysis data output by the gas analyzer.

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