Gas state monitor for displaying mixing ratio of mixed gas

Abstract

The utility model discloses a gas state monitor for displaying the mixing ratio of mixed gas, which relates to the technical field of electric power and comprises a body and a connector, the body comprises a shell, a gas state detection component and an intelligent processing unit, the gas state detection component and the intelligent processing unit are mounted in the shell, and the connection direction of the connector is the side wall or the rear part of the shell. One end of the connector is connected with the gas state detection assembly, the gas state detection assembly is electrically connected with the intelligent processing unit, and the intelligent processing unit is used for carrying out data processing on the gas characteristics of the mixed gas detected by the gas state detection assembly and obtaining the mixing ratio of the mixed gas; and the intelligent processing unit can output the obtained mixing ratio data of the mixed gas. According to the utility model, the mixed gas density and the mixed gas mixing ratio can be monitored, and the safe operation of a power grid is ensured.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and in particular to a gas state monitor that displays the mixing ratio of a mixed gas. Background Technology

[0002] To reduce SF6 gas consumption and address the issue of reliable operation of SF6 high-voltage electrical equipment at ultra-low temperatures, the power sector is initiating a project to develop electrical equipment using mixed gases (such as SF6 / N2, SF6 / CF4, and C4 / CO2) as insulation or arc-quenching media. Since the higher the density of the mixed gas in the electrical equipment, the stronger its insulation or arc-quenching capability, it is necessary to monitor the gas density. This necessitates the use of mixed gas condition monitors to monitor the mixing ratio of the mixed gases, ensuring the safe operation of the high-voltage electrical equipment. Furthermore, it is also necessary to monitor whether the mixing ratio within the mixed gas electrical equipment is within a normal range, thereby guaranteeing the safety performance of the mixed gas electrical equipment operating in the field. Utility Model Content

[0003] The purpose of this invention is to provide a gas state monitor that displays the mixing ratio of a mixed gas, so as to solve the problems existing in the prior art, realize the monitoring of the density and mixing ratio of the mixed gas, and ensure the safe operation of the power grid.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a gas state monitor for displaying the mixing ratio of a mixed gas, including a main body and a connecting connector. The main body includes a housing, a gas state detection component and an intelligent processing unit installed inside the housing. The connecting connector is connected to the side wall or rear of the housing. One end of the connecting connector is connected to the gas state detection component. The gas state detection component is electrically connected to the intelligent processing unit. The intelligent processing unit is used to process the gas characteristics of the mixed gas detected by the gas state detection component and obtain the mixing ratio of the mixed gas. The intelligent processing unit can output the obtained mixing ratio data.

[0006] Preferably, the gas state detection component includes a density sensor, a pressure sensor, and a temperature sensor, wherein the density sensor and the pressure sensor are both connected to the connector in the gas path; the density sensor is a MEMS density sensor, and the MEMS density sensor is made of a quartz oscillator.

[0007] Preferably, the housing is further provided with several pressure detectors, several temperature compensation elements and several signal generators. The density sensor and the pressure sensor are both connected to the pressure detector in the gas path. The pressure detector is a Baden tube or a bellows. The temperature compensation element is a bimetallic strip or a sealed standard gas. The signal generator is a micro switch or a magnetically assisted electrical contact.

[0008] Preferably, the intelligent processing unit includes a microprocessor and a communication module. The microprocessor and the communication module are electrically connected, and the microprocessor is used for data processing. The communication module is electrically connected to a communication module, and the communication module is used to transmit the data processed by the microprocessor to the communication module. The communication module is used for long-distance transmission of test data, and the communication module adopts wired or wireless transmission.

[0009] Preferably, the housing also includes an intelligent control unit, which is electrically connected to the intelligent processing unit and also electrically connected to a protection circuit. The protection circuit provides electromagnetic interference protection for the gas state detection component and / or the intelligent processing unit and / or the intelligent control unit.

[0010] Preferably, the housing is further provided with an oxygen sensor, which is electrically connected to the intelligent control unit. The intelligent control unit can correct the mixing ratio of the mixed gas based on the oxygen content data collected by the oxygen sensor. When the mixing ratio of the mixed gas obtained by the intelligent processing unit is lower or higher than the set value, the intelligent control unit can output alarm and / or lockout signal contacts and / or alarm information.

[0011] Preferably, the housing is further provided with a multi-port connector, which connects to the connecting connector, and the gas state detection component is disposed on the multi-port connector.

[0012] Preferably, the multi-port connector is also connected to a gas decomposition product sensor, which is electrically connected to the intelligent control unit and used to detect the content of gas decomposition products.

[0013] Preferably, it also includes a communication module, which is electrically connected to the intelligent control unit. The communication module is used for long-distance transmission of test data, and the communication module adopts wired or wireless transmission.

[0014] Preferably, it further includes a display device, which is installed outside or inside the housing and is electrically connected to the intelligent processing unit or the intelligent control unit; the display device is capable of displaying the mixing ratio of the mixed gas obtained by the intelligent processing unit or the intelligent control unit, and the gas characteristics of the mixed gas detected by the gas state detection component.

[0015] Preferably, the housing is further provided with a sealing cavity, the sealing cavity and the connecting joint are connected to each other in the gas path, the gas state detection component is sealed in the sealing cavity, and the wire of the gas state detection component is led out through the lead wire seal.

[0016] Preferably, the housing is further provided with a gas filter, which is installed at the front end of the gas state detection component and is used to filter the mixed gas before it enters the gas state detection component.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This utility model provides a gas state monitor for displaying the mixing ratio of a mixed gas, comprising a main body and a connecting connector. The main body includes a housing, a gas state detection component and an intelligent processing unit installed inside the housing. The connecting connector is connected to the side wall or rear of the housing, with one end connected to the gas state detection component, enabling the mixed gas to be introduced into the gas state detection component. The gas state detection component is electrically connected to the intelligent processing unit. The gas state detection component can detect the density, pressure, and temperature of the mixed gas. The intelligent processing unit processes the gas characteristics detected by the gas state detection component to obtain the mixing ratio of the mixed gas, achieving intelligent processing. The intelligent processing unit can also output the obtained mixing ratio data for acquisition by back-end personnel, thereby enabling real-time monitoring of the mixed gas density, pressure, temperature, and mixing ratio, ensuring that the mixed gas density and mixing ratio in the gas chamber of the mixed gas electrical equipment are at a safe level, eliminating potential fault hazards, and ensuring the safe operation of the power grid. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 1;

[0021] Figure 2 This is a circuit diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 1;

[0022] Figure 3This is a schematic diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 2;

[0023] Figure 4 This is a circuit diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 2;

[0024] Figure 5 This is a schematic diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 3;

[0025] Figure 6 This is a schematic diagram of the gas state monitor that displays the mixing ratio of the mixed gas in Example 4;

[0026] In the diagram: 1-body, 101-housing, 1021-first base, 1022-second base, 1031-first pressure detector, 1032-second pressure detector, 1041-first temperature compensation element, 1042-second temperature compensation element, 105-mechanism, 106-pointer, 107-dial, 108-base, 109-signal generator, 1010-connection connector, 1011-terminal block, 2-gas state detection component, 201-density sensor, 202-pressure sensor, 203-temperature sensor, 3-intelligent processing unit, 301-microprocessor, 302-communication module, 4-display device, 5-self-sealing valve, 6-oxygen sensor, 7-communication module, 8-gas decomposition product sensor, 9-multi-port connector, 10-intelligent control unit, 11-power module, 12-protection circuit, 13-sealing cavity, 14-lead wire seal. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The purpose of this invention is to provide a gas state monitor that displays the mixing ratio of a mixed gas, so as to solve the problems existing in the prior art, realize the monitoring of the density and mixing ratio of the mixed gas, and ensure the safe operation of the power grid.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figures 1-2As shown, this embodiment provides a gas state monitor for displaying the mixing ratio of a mixed gas, mainly used in high-voltage electrical equipment. It includes a main body 1 and a connecting connector 1010. The main body 1 includes a housing 101, a display device 4 mounted on the outer wall of the housing 101, and a gas state detection component 2 and an intelligent processing unit 3 installed inside the housing 101. A terminal block 1011 is mounted on the housing 101. The connecting connector 1010 is connected to the side wall or rear of the housing 101. One end of the connecting connector 1010 is connected to the gas state detection component 2, thereby enabling the mixed gas to be introduced into the gas state detection component 2. Component 2 is electrically connected to the intelligent processing unit 3. The gas state detection component 2 can detect the density, pressure, and temperature of the mixed gas. The intelligent processing unit 3 processes the gas characteristics detected by the gas state detection component 2 to obtain the mixed gas mixing ratio, achieving intelligent processing. The intelligent processing unit 3 can also output the obtained mixed gas mixing ratio data for back-end personnel to access, thereby enabling real-time monitoring of the mixed gas density, pressure, temperature, and mixing ratio. This ensures that the mixed gas density and ratio in the gas chamber of the mixed gas electrical equipment are at safe levels, eliminating potential fault hazards and ensuring the safe operation of the power grid. This embodiment includes, but is not limited to, a gas density relay with mixing ratio monitoring, a gas density transmitter with mixing ratio monitoring, and a gas micro-moisture transmitter with mixing ratio monitoring. The detected gas state includes, but is not limited to, parameters such as gas density, pressure, temperature, decomposition product content, and micro-moisture content. For SF6 / N2 mixed gas, the commonly referred to gas mixing ratio is the volume fraction of sulfur hexafluoride in the sulfur hexafluoride mixed gas.

[0032] Specifically, the gas state detection component 2 includes a density sensor 201, a pressure sensor 202, and a temperature sensor 203. Both the density sensor 201 and the pressure sensor 202 are connected to the connector 1010 in the gas path. The intelligent processing unit 3 receives the data collected by the gas state detection component 2 and, after processing, can obtain the density value and / or pressure value and / or temperature value of the mixed gas. The density sensor 201 is a high-precision density sensor, preferably a MEMS density sensor, and the MEMS density sensor is made of a quartz oscillator, which can also be understood as a micro-mechanical system composed of an oscillator with a tuning fork shape.

[0033] The working principle of the MEMS density sensor is as follows: gases of different densities produce different frequencies when passing through a quartz oscillator. The gas density is obtained based on the corresponding frequency. Then, the intelligent processing unit 3 uses the obtained gas density, gas pressure, and gas temperature to measure the mixing ratio of the mixed gas based on the characteristics of the mixed gas. Specifically, HHB = F(D, P, T), where HHB is the mixing ratio of the mixed gas, D is the density value of the mixed gas, P is the pressure value of the mixed gas, and T is the temperature value of the mixed gas.

[0034] Taking the SF6 / N2 mixture as an example, the pressure value P is measured by pressure sensor 202. 总 The absolute pressure value is measured by temperature sensor 203, and the absolute temperature value is measured by density sensor 201. 总 Assume the pressure of SF6 gas in the SF6 / N2 mixture is P. SF6 The gas pressure of N2 in this gas mixture is P. N2 Then we get Formula 1:

[0035] P SF6 +P N2 =P 总 ;

[0036] Then, based on the SF6 gas pressure P SF6 Given the temperature T at that time, Formula 2 is obtained based on the SF6 gas characteristic equation:

[0037] D SF6 =F(P SF6 ,T);

[0038] Based on the N2 gas pressure P N2 Given the temperature T at that time, Equation 3 is obtained based on the N2 gas characteristic equation:

[0039] D N2 =F(P N2 ,T);

[0040] Next, based on the measured gas density value D 总 Formula 4 can be obtained:

[0041] D SF6 +D N2 =D 总 ;

[0042] Intelligent processing unit 3 obtains P based on the correspondence between formulas 1 to 4. SF6 and P N2 Then the mixing ratio of the mixed gas is obtained:

[0043] HHB = P SF6 / PN2 ,

[0044] Or obtain the concentration of SF6 gas:

[0045] ND SF6 =PSF6 / (PSF6+PN2),

[0046] Or obtain the concentration of N2 gas:

[0047] ND N2 =P N2 / (P SF6 +P N2 ),

[0048] The characteristic equation for SF6 gas can be the Beattie-Bridgman equation; while the characteristic equation for N2 gas can be the following equation:

[0049] D N2 =(P N2 *M) / (R*T),

[0050] In the formula, M is the molar coefficient and R is a constant. For N2, the ideal gas constant can be used, and the value of the gas constant is 8.314 J / (mol·K).

[0051] Typically, the density value D (kg / m³) 3 The pressure is P (MPa) and the temperature is T (K). The same calculation applies to other gas mixtures, such as SF6 / CF4 and C4 / CO2, which will not be elaborated here.

[0052] The housing 101 also houses several pressure detectors, several temperature compensation elements, and several signal generators 109. These pressure detectors, temperature compensation elements, and signal generators 109 are configured to enable the gas state monitor displaying the mixture ratio to function as a density controller. The pressure detectors can be mounted on the base 108. Both the density sensor 201 and the pressure sensor 202 are connected to the pressure detectors in the gas path. The pressure detectors are Baden tubes or bellows; preferably, there are two pressure detectors: a first pressure detector 1031 and a second pressure detector 1032. The temperature compensation elements are bimetallic strips or sealed standard gas; there are two temperature compensation elements: a first temperature compensation element 1041 and a second temperature compensation element 1042. The signal generator 109 is a microswitch or a magnetically assisted electrical contact. The housing 101 also houses a movement 105, a pointer 106, and a dial 107, which display the density value of the mixed gas.

[0053] The intelligent processing unit 3 includes a microprocessor 301 and a communication module 302. Based on the embedded system algorithm and control program of the microprocessor 301, the intelligent processing unit 3 automatically controls the entire process of detecting the mixing ratio of the mixed gas. It includes all peripherals, logic, and input / output. The microprocessor 301 and the communication module 302 are electrically connected. The microprocessor 301 is used for data processing, and the communication module 302 is used for long-distance transmission of test data, making the gas state monitor that displays the mixing ratio of the mixed gas more intelligent. The communication module 302 is electrically connected to a communication module 7, and the communication module 302 is used to transmit the data processed by the microprocessor 301 to the communication module 7. The communication module 7 is used for long-distance transmission of test data. The communication module 7 adopts wired transmission (RS485) or wireless transmission (LORA or WAPI).

[0054] An oxygen sensor 6 is also installed inside the housing 101. The oxygen sensor 6 is electrically connected to the intelligent processing unit 3, and the intelligent processing unit 3 can correct the gas mixing ratio based on the oxygen content data collected by the oxygen sensor 6. Specifically, based on the oxygen content data collected by the oxygen sensor 6, the intelligent processing unit 3 removes and processes the oxygen content to obtain a more accurate gas mixing ratio. When the gas mixing ratio obtained by the intelligent processing unit 3 is lower or higher than the set value, the intelligent processing unit 3 can output alarm and / or interlock signal contacts and / or alarm information, thereby promptly notifying maintenance personnel or performing interlocking processing to ensure the safe operation of the gas mixing electrical equipment.

[0055] The display device 4 can be a digital device or an LCD device. The digital device or LCD device can be electrically connected to the intelligent processing unit 3, thereby displaying the mixing ratio and / or density and / or temperature of the mixed gas. The display device 4 can also be set remotely via wireless or wired connection, making installation more convenient. The digital device or LCD device can be located on the front inside the housing 101 or on the perimeter of the housing 101, as long as it is easily visible to personnel.

[0056] In this embodiment, the gas state detection component 2, the oxygen sensor 6, the intelligent processing unit 3, and the communication module 7 are all located at the rear of the housing 101, and the display device 4 is located at the front of the housing 101.

[0057] The housing 101 is also provided with a multi-port connector 9, which can be directly or indirectly (e.g., through a connecting pipe) connected to the connecting connector 1010, and the gas state detection component 2 is disposed on the multi-port connector 9.

[0058] The housing 101 is also provided with a sealing cavity 13, and the gas state detection component 2 is sealed in the sealing cavity 13.

[0059] The housing 101 also houses a first base 1021 and a second base 1022, which are used to provide an installation platform.

[0060] This embodiment also includes a display device 4, which is installed outside or inside the housing 101 and is electrically connected to the intelligent processing unit 3. The display device 4 can display the mixed gas ratio obtained by the intelligent processing unit 3 and the mixed gas characteristics detected by the gas state detection component 2.

[0061] This embodiment also includes a protection circuit 12, which provides electromagnetic interference protection for the gas state detection component 2 and / or the intelligent processing unit 3 and / or the display device 4, ensuring that they can work reliably.

[0062] The housing 101 also contains a power module 11, which provides power to the gas state detection component 2, the intelligent processing unit 3, and the display device 4.

[0063] Example 2

[0064] like Figures 3-4 As shown, the difference between this embodiment and Embodiment 1 is that the housing 101 in this embodiment also includes an intelligent control unit 10, which is electrically connected to the intelligent processing unit 3 and the protection circuit 12. The intelligent control unit 10, based on the embedded system algorithm and control program of the microprocessor 301, can automatically control the entire mixing ratio detection process of the mixed gas, including all peripherals, logic, and input / output.

[0065] In this embodiment, the display device 4 is electrically connected to the intelligent control unit 10. The display device 4 can display the mixed gas ratio obtained by the intelligent control unit 10 and the mixed gas characteristics detected by the gas state detection component 2.

[0066] The oxygen sensor 6 is electrically connected to the intelligent control unit 10, and the intelligent control unit 10 can correct the gas mixing ratio based on the oxygen content data collected by the oxygen sensor 6. Specifically, based on the oxygen content data collected by the oxygen sensor 6, the intelligent control unit 10 removes and processes the oxygen content to obtain the gas mixing ratio. When the gas mixing ratio obtained by the intelligent processing unit 3 is lower or higher than the set value, the intelligent control unit 10 can output alarm and / or interlock signal contacts and / or alarm information, thereby promptly notifying maintenance personnel or performing interlock processing to ensure the safe operation of the gas mixing electrical equipment.

[0067] The multi-port connector 9 is also connected to a gas decomposition product sensor 8, which is electrically connected to the intelligent processing unit 3 and is used to detect the content of gas decomposition products.

[0068] The principle for detecting the mixing ratio of the mixed gas in this embodiment is the same as that in Embodiment 1.

[0069] Example 3

[0070] like Figure 5 As shown, the difference between this embodiment and embodiment two is that in this embodiment, the sealing cavity 13 and the connecting joint 1010 are connected to each other in the gas path. Preferably, the sealing cavity 13 is connected to a self-sealing valve 5 through the gas path, and the self-sealing valve 5 is set on the connecting joint 1010. The gas state detection component 2 is sealed in the sealing cavity 13, and the wire of the gas state detection component 2 is led out through the lead wire seal 14, which facilitates electrical connection with the intelligent control unit 10, the power module 11 and the protection circuit 12. At the same time, the density sensor 201 and the pressure sensor 202 can be immersed in the insulating gas, which can improve the overvoltage resistance.

[0071] The housing 101 is also equipped with a gas filter, which is installed at the front end of the gas state detection component 2. The gas filter is used to filter the mixed gas before it enters the gas state detection component 2, so as to ensure that the gas state detection component 2 is not contaminated by gas impurities and improve the measurement accuracy.

[0072] The principle for detecting the mixing ratio of the mixed gas in this embodiment is the same as that in Embodiment 1.

[0073] Example 4

[0074] like Figure 6 As shown, the difference between this embodiment and Embodiment 3 is that the sealed cavity 13 in this embodiment is provided with an insulating plate and an insulating component. The insulating component is cylindrical, thereby improving the insulation effect on the density sensor 201 and the pressure sensor 202. The connection direction of the connecting joint 1010 in this embodiment is the rear of the housing 101.

[0075] The principle for detecting the mixing ratio of the mixed gas in this embodiment is the same as that in Embodiment 1.

[0076] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gas state monitor that displays the mixing ratio of a mixed gas, characterized in that: The device includes a main body and a connecting connector. The main body includes a housing, a gas state detection component and an intelligent processing unit installed inside the housing. The connecting connector is connected to the side wall or rear of the housing. One end of the connecting connector is connected to the gas state detection component. The gas state detection component is electrically connected to the intelligent processing unit. The intelligent processing unit is used to process the gas characteristics of the mixed gas detected by the gas state detection component and obtain the mixed gas mixing ratio. The intelligent processing unit can output the obtained mixed gas mixing ratio data.

2. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 1, characterized in that: The gas state detection component includes a density sensor, a pressure sensor, and a temperature sensor. The density sensor and the pressure sensor are both connected to the connector in the gas path. The density sensor is a MEMS density sensor, and the MEMS density sensor is made of a quartz oscillator.

3. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 2, characterized in that: The housing also contains several pressure detectors, several temperature compensation elements, and several signal generators. The density sensor and the pressure sensor are both connected to the pressure detector in the gas path. The pressure detector is a Baden tube or a bellows. The temperature compensation element is a bimetallic strip or a sealed standard gas. The signal generator is a micro switch or a magnetically assisted electrical contact.

4. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 1, characterized in that: The intelligent processing unit includes a microprocessor and a communication module. The microprocessor and the communication module are electrically connected. The microprocessor is used for data processing. The communication module is electrically connected to a communication module and is used to transmit the data processed by the microprocessor to the communication module. The communication module is used for long-distance transmission of test data. The communication module adopts wired or wireless transmission.

5. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 1, characterized in that: The housing also includes an intelligent control unit, which is electrically connected to the intelligent processing unit. The intelligent control unit is also electrically connected to a protection circuit, which provides electromagnetic interference protection for the gas state detection component and / or the intelligent processing unit and / or the intelligent control unit.

6. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 5, characterized in that: An oxygen sensor is also provided inside the housing. The oxygen sensor is electrically connected to the intelligent control unit. The intelligent control unit can correct the mixing ratio of the mixed gas based on the oxygen content data collected by the oxygen sensor. When the mixing ratio of the mixed gas obtained by the intelligent processing unit is lower or higher than the set value, the intelligent control unit can output alarm and / or lockout signal contacts and / or alarm information.

7. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 5, characterized in that: The housing is also provided with a multi-port connector, which connects to the connecting connector, and the gas state detection component is disposed on the multi-port connector.

8. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 7, characterized in that: The multi-port connector is also connected to a gas decomposition product sensor, which is electrically connected to the intelligent control unit and used to detect the content of gas decomposition products.

9. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 5, characterized in that: It also includes a communication module, which is electrically connected to the intelligent control unit. The communication module is used for long-distance transmission of test data and can be either wired or wireless.

10. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 5, characterized in that: It also includes a display device, which is installed outside or inside the housing and is electrically connected to the intelligent processing unit or the intelligent control unit; the display device is capable of displaying the mixing ratio of the mixed gas obtained by the intelligent processing unit or the intelligent control unit, as well as the gas characteristics of the mixed gas detected by the gas state detection component.

11. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 1, characterized in that: The housing is further provided with a sealing cavity, and the sealing cavity and the connecting joint are connected to each other in the gas circuit. The gas state detection component is sealed in the sealing cavity, and the wire of the gas state detection component is led out through the lead wire seal.

12. The gas state monitor for displaying the mixing ratio of a mixed gas according to claim 1, characterized in that: The housing is also equipped with a gas filter, which is installed at the front end of the gas state detection component and is used to filter the mixed gas before it enters the gas state detection component.

Images