Ultrahigh-temperature gas measuring device

Abstract

The utility model relates to the technical field of ultrahigh-temperature gas measurement, in particular to an ultrahigh-temperature gas measuring device. The gas measuring device comprises a shell, a heating assembly, a gas inlet assembly and a laser analyzer, the heating assembly is arranged in the shell and used for heating and controlling the temperature, and the gas inlet assembly is used for forming a measuring channel of target gas in the shell and is matched with the heating assembly to heat the input target gas so as to simulate the high-temperature working condition; and a laser analyzer arranged outside the shell is arranged relative to the gas inlet assembly, so that the concentration of the target gas can be accurately measured by simulating the ultrahigh-temperature working condition.

Description

Technical Field

[0001] This application relates to the field of ultra-high temperature gas measurement technology, and in particular to an ultra-high temperature gas measurement device. Background Technology

[0002] In industries such as petrochemicals, steel, waste incineration, and thermal power generation, there are ultra-high temperature working conditions. When in-situ laser gas analyzers are used in these conditions, in order to ensure the accuracy of the analyzer's readings on-site, requirements are placed on the ultra-high temperature laboratory simulation environment, which means that an ultra-high temperature gas measurement system (device) is needed.

[0003] The heating furnace of existing gas measurement systems is generally adapted to the high-temperature gas cell temperature of in-situ laser gas analyzers below 500 degrees Celsius. It cannot be adapted to simulate operating conditions above 500 degrees Celsius. The gas cell used in this system is generally set outside the heating furnace at both ends, which will result in temperature gradients during testing, leading to inaccurate test results.

[0004] Therefore, how to design a gas measuring device that can simulate ultra-high temperature working conditions and accurately measure gas concentration is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide an ultra-high temperature gas measuring device that can simulate ultra-high temperature working conditions and achieve accurate measurement of gas concentration.

[0006] This application discloses an ultra-high temperature gas measuring device, which adopts the following scheme:

[0007] A high-temperature gas measuring device, characterized in that it comprises: a housing with a through hole on opposite sides; a heating assembly housed within the housing, comprising: a thermal insulation block, a heating wire, a thermocouple, and a temperature controller, wherein the heating wire is embedded in the thermal insulation block for electrically connecting to the temperature controller, and the thermocouple is connected to the temperature controller; an air inlet assembly comprising a first quartz glass tube, a quartz gas cell, a second quartz glass tube, and a third quartz glass tube, wherein two first quartz glass tubes are provided, the quartz gas cell is located within the housing, the two first quartz glass tubes are positioned opposite the quartz gas cell through the through hole, one end of each of the second and third quartz glass tubes is inserted into and passes through the quartz gas cell, one end of the thermocouple extends into the quartz gas cell through the second quartz glass tube to measure the temperature, and the other end of the third quartz glass tube extends out of the housing, wherein the heating wire faces the quartz gas cell; and a laser analyzer disposed outside the housing, comprising a laser emitting end and a laser receiving end, respectively positioned opposite the two first quartz glass tubes.

[0008] By employing the above technical solutions, precise measurement of ultra-high temperature gases is achieved. Specifically: the shell design ensures the overall structural stability and sealing of the device, preventing interference from the external environment. The heat insulation block, heating wire, thermocouple, and temperature controller in the heating assembly work together to achieve rapid and precise temperature control, ensuring that the gas in the quartz gas cell reaches the required high temperature state. The design of the quartz gas cell and the third quartz glass tube in the gas inlet assembly allows the target gas to smoothly enter and be evenly distributed in the quartz gas cell for measurement, improving the accuracy and reliability of the measurement. The second quartz glass tube is used to insert the thermocouple to monitor the temperature changes in the quartz gas cell in real time, ensuring the accuracy of the temperature data. The design of the third quartz glass tube facilitates the introduction or discharge of the target gas, further improving the convenience and safety of experimental operations. The laser analyzer is located on the outside and emits and receives lasers through the first glass tube and the quartz gas cell, enabling high-precision gas concentration analysis of the target gas. Furthermore, the first, second, and third quartz glass tubes, as well as the quartz gas cell, are all made of quartz, capable of withstanding temperatures up to 1200℃, making them suitable for simulating ultra-high temperature operating conditions. Therefore, this application can simulate ultra-high temperature operating conditions, enabling accurate measurement of gas concentration.

[0009] Optionally, it also includes: a fixing member disposed at both ends of the housing for mounting the laser emitting end and the laser receiving end, wherein the first glass tube passes through the fixing member from the exposed end of the housing.

[0010] By adopting the above technical solution, stable fixation of the laser emitter and receiver can be achieved, ensuring their precise alignment with the quartz glass tube, thereby improving measurement accuracy. Simultaneously, the design of the fixing components facilitates the installation and maintenance of the first glass element.

[0011] Optionally, multiple thermal insulation blocks are provided, and multiple heating wires are provided accordingly, to surround the first quartz glass tube and the quartz gas cell to form a heating area.

[0012] By adopting the above technical solution, multiple heat insulation blocks are arranged around the first quartz glass tube and the quartz gas cell. With the heating of the heating wire, a heating zone can be formed to improve the accuracy and stability of temperature control, thereby improving the accuracy and reliability of ultra-high temperature gas measurement.

[0013] Optionally, the length of the heating zone is greater than the length of the quartz gas chamber.

[0014] By adopting the above technical solution, the heating area can completely cover the length of the quartz gas cell, thereby ensuring that the entire quartz gas cell can be heated uniformly, improving the uniformity and stability of temperature distribution, and thus improving the accuracy and reliability of measurement results.

[0015] Optionally, the fastener is a flange.

[0016] By adopting the above technical solution, the use of flanges for fixing components can effectively improve the structural stability of the device, ensure the accurate positioning of the laser transmitter and laser receiver, and facilitate installation and maintenance.

[0017] Optionally, two third quartz glass tubes are provided, located at opposite ends of the quartz gas cell, for inputting and outputting the target gas into and out of the quartz gas cell.

[0018] By adopting the above technical solution, efficient and stable gas delivery can be achieved. Specifically, two third quartz glass tubes are set up and located at opposite ends of the quartz gas cell. This ensures that the target gas is input from one third quartz glass tube and output from the other, controlling the target gas flow rate and pressure, maintaining uniform gas distribution, and thus improving the accuracy and reliability of the measurement results.

[0019] Optionally, three second quartz glass tubes are provided, evenly inserted into the quartz gas cell, so that the three thermocouples can extend into the quartz gas cell.

[0020] By adopting the above technical solution, multi-point precise measurement of gas temperature within the quartz gas cell can be achieved, improving the accuracy and reliability of temperature monitoring. Specifically, setting three thermocouples evenly distributed on the quartz gas cell can effectively avoid errors caused by a single temperature measurement point, ensuring the uniformity of the temperature field throughout the entire quartz gas cell, thereby improving the accuracy and stability of the laser analyzer in detecting gas components.

[0021] Optionally, the thermal insulation block is an inorganic fiber block.

[0022] By adopting the above technical solution, using inorganic fiber blocks as thermal insulation blocks can effectively improve heating efficiency and uniformity, while also possessing excellent high-temperature resistance, ensuring stable operation for extended periods under ultra-high temperature conditions. Furthermore, the low thermal conductivity of inorganic fiber materials helps reduce heat loss, further enhancing the overall energy efficiency of the device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The shell design ensures the overall structural stability and airtightness of the device, preventing interference from the external environment. The thermal insulation block, heating wire, thermocouple, and temperature controller in the heating assembly work together to achieve rapid and precise temperature control, ensuring that the gas in the quartz gas cell reaches the required high temperature.

[0025] 2. The design of the quartz gas cell and the third quartz glass tube in the gas inlet assembly allows gas to enter smoothly and be evenly distributed within the quartz gas cell for measurement, improving the accuracy and reliability of the measurements. The second quartz glass tube is used to insert a thermocouple to monitor temperature changes within the quartz gas cell in real time, ensuring the accuracy of temperature data. The design of the third quartz glass tube facilitates the introduction or exhaust of the target gas, further enhancing the convenience and safety of experimental operations. Furthermore, the first, second, and third quartz glass tubes, as well as the quartz gas cell, are all made of quartz material, capable of withstanding temperatures up to 1200℃, making them suitable for simulating ultra-high temperature conditions.

[0026] 3. The laser emitter and receiver of the laser analyzer are respectively set to correspond to the first quartz glass tube, realizing high-precision monitoring of the gas composition of the quartz gas cell, which is suitable for ultra-high temperature gas analysis needs under various complex working conditions.

[0027] 4. The thermal insulation blocks are arranged around the quartz gas cell to form a highly efficient heating zone, ensuring that the gas in the quartz gas cell can quickly reach the set ultra-high temperature state, thus improving the overall performance and reliability of the device. Attached Figure Description

[0028] Figure 1 This is a cross-sectional structural diagram of an ultra-high temperature gas measuring device disclosed in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Housing; 11. Through hole; 20. Heating component; 21. Thermal insulation block; 30. Air intake component; 31. First quartz glass tube; 32. Quartz gas chamber; 33. Second quartz glass tube; 34. Third quartz glass tube; 40. Fixing component. Detailed Implementation

[0031] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0032] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0033] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0034] See Figure 1 This application discloses an ultra-high temperature gas measuring device, including a housing 10, a heating component 20, an air intake component 30, and a laser analyzer. The heating component 20 is disposed inside the housing 10 and is used to heat and control the temperature. The air intake component 30 is used to form a measurement channel for the target gas inside the housing 10. It works in conjunction with the heating component 20 to heat the input target gas to simulate high temperature conditions. The laser analyzer disposed outside the housing 10 relative to the air intake component 30 is used to accurately measure the gas concentration.

[0035] The housing 10, for example, has a square structure and is made of stainless steel (not limited), serving to encapsulate and protect, stabilize the structure, and enhance aesthetics. The heating assembly 20 includes a thermal insulation block 21, a heating wire, a thermocouple, and a temperature controller. The thermal insulation block 21 is an inorganic fiber block with good high-temperature resistance. The heating wire is embedded in the thermal insulation block 21 and electrically connected to the temperature controller, allowing the temperature controller to control the heating wire's heating, thereby heating the target gas contained in the air intake assembly 30. It should be noted that the target gas can be oxygen, carbon monoxide, methane, etc., but is not limited to these categories.

[0036] In addition, one end of the thermocouple is connected to the temperature controller, and the other end is inserted into the air intake assembly 30 to detect the temperature of the target gas. The heating wire is then controlled by the temperature controller to heat the target gas to the target value. In conjunction with the heat insulation block 21, the temperature of the entire quartz gas cell 32 is continuously maintained, thereby simulating continuous high temperature working conditions.

[0037] The intake components 30 are all made of quartz and can withstand temperatures up to 1200℃ to adapt to ultra-high temperature operating conditions for simulation. Specifically, the intake components 30 include a first quartz glass tube 31, a quartz gas chamber 32, a second quartz glass tube 33, and a third quartz glass tube 34. There are two first quartz glass tubes 31, which are inserted into the two ends of the housing 10 respectively, and corresponding through holes 11 are provided on the housing 10.

[0038] The quartz gas cell 32 is located inside the housing 10. Two first quartz glass tubes 31 are arranged opposite to the quartz gas cell 32 through the through hole 11. The heating wire is arranged facing the quartz gas cell 32, and the quartz gas cell 32 and the target gas in the quartz gas cell 32 are heated by thermal radiation.

[0039] It should be noted that the quartz gas cell 32 is in the form of a pipe, with windows at both ends opposite the two first quartz glass tubes 31. Both the quartz gas cell 32 and the window are made of fused quartz. The quartz gas cell 32 is used to contain the target gas as a detection area.

[0040] Both the second quartz glass tube 33 and the third quartz glass tube 34 have one end inserted into and pass through the quartz gas cell 32. This allows one end of the thermocouple to extend into the quartz gas cell 32 through the second quartz glass tube 33 for temperature measurement, while the other end of the third quartz glass tube 34 extends out of the housing 10 for connecting to an external gas source, so as to input the target gas into the quartz gas cell 32.

[0041] The second quartz glass tube 33 is cylindrical, and three are evenly inserted into the quartz gas cell 32. This allows three thermocouples to be inserted into the quartz gas cell 32, enabling multi-point precise measurement of the gas temperature within the quartz gas cell 32, thus improving the accuracy and reliability of temperature monitoring. Specifically, the even distribution of three thermocouples on the quartz gas cell 32 effectively avoids errors caused by a single temperature measurement point, ensuring the uniformity of the temperature field throughout the quartz gas cell 32, thereby improving the accuracy and stability of the laser analyzer in detecting gas components.

[0042] The third quartz glass tube 34 is cylindrical, and there are two of them, located at the two ends of the quartz gas cell 32 respectively. This ensures that the target gas is input from one third quartz glass tube 34 and output from the other third quartz glass tube 34, thereby controlling the target gas flow rate and pressure, maintaining uniform gas distribution, and improving the accuracy and reliability of the measurement results.

[0043] The laser analyzer includes a laser emitter and a laser receiver, which are respectively positioned opposite two first quartz glass tubes 31. During measurement, nitrogen gas is first used to purge the gas in the first quartz glass tubes 31 to avoid gas interference. Then, the laser emitter is activated to emit a laser beam, which is transmitted through one first quartz glass tube 31, a quartz gas cell 32, and the other first quartz glass tube 31 to the laser receiver for reception, thereby achieving accurate measurement of the target gas concentration.

[0044] In order to fix the laser analyzer, flanges are provided at both ends of the housing 10, opposite to the two first quartz glass tubes 31. The ends of the two first quartz glass tubes 31 exposed outside the housing 10 are inserted into the flanges, and the laser emitting end and the laser receiving end are respectively hung and fixed on the two flanges.

[0045] In this embodiment, multiple thermal insulation blocks 21 are provided, along with multiple corresponding heating wires, to surround the first quartz glass tube 31 and the quartz gas cell 32, forming a heating area. The length of the heating area is greater than the length of the quartz gas cell 32 itself; for example, the heating area is 900 mm long, and the quartz gas cell 32 is 500 mm long. The heating area extends 200 mm beyond both ends of the quartz gas cell 32, ensuring that the heating area completely covers the length of the quartz gas cell 32, placing it within a constant-temperature heating zone to uniformly heat the target gas and avoid temperature gradients, thereby simulating a constant-temperature high-temperature condition, such as 1200°C. This overall structural design ensures that the quartz gas cell 32 can be uniformly heated, improving the uniformity and stability of the temperature distribution, and thus enhancing the accuracy and reliability of the measurement results.

[0046] In summary, the ultra-high temperature gas measuring device disclosed in this application, by setting a heating component 20 and an air intake component 30 inside the housing 10 and directly inserting a thermocouple into the quartz gas cell 32 to measure the temperature, ensures the uniformity and accuracy of the temperature throughout the measurement process, solving the problem of large temperature gradients and inaccurate test results in existing systems under ultra-high temperature conditions. The material design of the first quartz glass tube 31, the quartz gas cell 32, the second quartz glass tube 33, and the third quartz glass tube 34 in the air intake component 30, as well as the structural design of the quartz gas cell 32 and the third quartz glass tube 34, can simulate ultra-high temperature working conditions, allowing the gas to smoothly enter and be evenly distributed in the quartz gas cell 32 for measurement, thus improving the accuracy and reliability of the measurement. The laser emitter and receiver of the laser analyzer are respectively set to correspond to the first quartz glass tube 31, realizing accurate measurement and analysis of gas concentration and meeting the needs of ultra-high temperature gas analysis under complex working conditions. Multiple heat insulation blocks 21 are arranged around the quartz gas cell 32, and the heating wire is embedded in the heat insulation blocks 21 and facing the quartz gas cell 32, which can form an efficient heating area, enabling the target gas in the quartz gas cell 32 to quickly reach and maintain the set ultra-high temperature state, improving the overall stability and reliability of the device.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A high-temperature gas measuring device, characterized in that, include: The housing (10) has a through hole (11) on the opposite side. The heating assembly (20) is housed in the housing (10) and includes: a heat insulation block (21), a heating wire, a thermocouple and a temperature controller. The heating wire is embedded in the heat insulation block (21) and is used to electrically connect to the temperature controller. The thermocouple is connected to the temperature controller. The air intake assembly (30) includes a first quartz glass tube (31), a quartz gas cell (32), a second quartz glass tube (33), and a third quartz glass tube (34). There are two first quartz glass tubes (31). The quartz gas cell (32) is located inside the housing (10). The two first quartz glass tubes (31) are arranged opposite to the quartz gas cell (32) through the through hole (11). One end of the second quartz glass tube (33) and the third quartz glass tube (34) are inserted into and pass through the quartz gas cell (32). One end of the thermocouple is inserted into the quartz gas cell (32) through the second quartz glass tube (33) to measure the temperature. The other end of the third quartz glass tube (34) passes through the housing (10). The heating wire is arranged facing the quartz gas cell (32). The laser analyzer is located outside the housing (10) and includes a laser emitting end and a laser receiving end, which are respectively positioned opposite the two first quartz glass tubes (31).

2. The ultra-high temperature gas measuring device according to claim 1, characterized in that, Also includes: Fixing member (40) is provided at both ends of the housing (10) for mounting the laser emitting end and the laser receiving end, wherein the first quartz glass tube (31) passes through the fixing member (40) from the exposed end of the housing (10).

3. The ultra-high temperature gas measuring device according to claim 1, characterized in that, Multiple heat insulation blocks (21) are provided, and multiple heating wires are provided to surround the first quartz glass tube (31) and the quartz gas pool (32) to form a heating area.

4. The ultra-high temperature gas measuring device according to claim 3, characterized in that, The length of the heating zone is greater than the length of the quartz gas cell (32).

5. The ultra-high temperature gas measuring device according to claim 2, characterized in that, The fastener (40) is a flange.

6. The ultra-high temperature gas measuring device according to claim 2, characterized in that, The third quartz glass tube (34) is configured as two, located at both ends of the quartz gas cell (32), for inputting and outputting the target gas into and out of the quartz gas cell (32).

7. The ultra-high temperature gas measuring device according to claim 2, characterized in that, Three second quartz glass tubes (33) are provided and are evenly inserted into the quartz gas cell (32) so that the three thermocouples can be inserted into the quartz gas cell (32).

8. The ultra-high temperature gas measuring device according to claim 2, characterized in that, The heat insulation block (21) is an inorganic fiber block.

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