High-temperature fuel gas flow load monitoring method and device

Abstract

The invention relates to a high-temperature fuel gas flow load monitoring method and device. The high-temperature fuel gas flow load monitoring method comprises the following steps: S1, generating a fuel gas flow; s2, acquiring and detecting load data of the high-temperature combustion gas flow; s3, transmitting the analog electric signal to acquisition equipment; s4, analog electric signal conversion; s5, digital signal transmission; and S6, digital signal processing. According to the high-temperature fuel gas flow load monitoring method and device, load data information such as the temperature and the pressure of the high-temperature fuel gas flow can be obtained in real time, feasibility of real-time load monitoring in a core area of a fuel gas flow field can be achieved, and basic data are provided for structural integrity and stability analysis of a supporting platform.

Description

Technical Field

[0001] This invention relates to the field of high-temperature monitoring technology, and in particular to a method and device for monitoring high-temperature gas flow load. Background Technology

[0002] In high-temperature (above 1800℃) natural gas flow environments, the thermal loads borne by ground equipment directly affect its structural integrity and stability. Therefore, it is necessary to measure and evaluate environmental load data under high-temperature gas flow conditions to ensure that ground equipment does not experience structural failure. Current research on high-temperature gas flow load data borne by ground equipment generally obtains predictive data through numerical simulation. Other methods combine numerical simulation with scaled-down experiments to verify the model, while data obtained through actual on-board testing is relatively scarce. However, due to the limitations of the research method combining numerical simulation and scaled-down experiments, firstly, the physical field reproduction is restricted by similarity criteria, leading to distortions in flow and heat transfer; secondly, it cannot reproduce the impurity scouring, vibration loads, and extreme temperatures of real gas flow, weakening the complexity of the environment, and making it difficult to introduce random disturbance factors from the real environment, resulting in idealized boundary conditions and insufficient coverage of extreme conditions. Furthermore, considering the defects of scaled-down material equivalence, simulation results are likely to be distorted, making it difficult not only to accurately reproduce the actual on-site conditions but also to completely reconstruct the data of the entire experimental process. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to overcome the shortcomings of the prior art and provide a method and device for monitoring the load of high-temperature gas flow. This method can acquire load data information such as temperature and pressure of high-temperature gas flow in real time, which not only realizes the feasibility of real-time load monitoring in the core area of ​​the gas flow field, but also provides basic data for the structural integrity and stability analysis of the support platform.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A method for monitoring high-temperature gas flow load includes the following steps:

[0006] S1, Generate gas flow: Send an action command to the gas generator to cause the gas generator to generate a high-temperature gas flow and act on the support platform below the gas generator.

[0007] S2, Acquisition and detection of load data of high-temperature gas flow: Sensor devices are arranged below the gas generator to monitor and acquire load data of high-temperature gas flow in real time, and the acquired physical data is converted into analog electrical signals.

[0008] S3, Analog electrical signal transmission to acquisition device: The acquired analog electrical signal is transmitted to the acquisition device through a signal transmission line;

[0009] S4, Analog-to-digital signal conversion: The received analog-to-digital signal is converted into a digital signal in real time through the acquisition device;

[0010] S5, Digital Signal Transmission: The digital signal output by the acquisition device is transmitted to the host computer for data processing and storage via a data transmission line;

[0011] S6, Digital Signal Processing: The computer receives and processes the digital signals stored in the host computer, and realizes real-time display and storage of the load data of the high-temperature gas flow.

[0012] In one implementation, in step S1, the temperature of the high-temperature gas flow is greater than or equal to 1800°C.

[0013] In one implementation, in step S2, the sensor device includes four sets of acquisition sensors, which are spaced apart on the support platform and located below the gas generator. Each set of acquisition sensors includes a temperature sensor and a pressure sensor.

[0014] In one implementation, in step S2, the four sets of acquisition sensors are distributed at the four corners of a square, the temperature sensor is a thin-film sensor, and the pressure sensor is a piezoresistive pressure sensor.

[0015] In one implementation, in step S3, the signal transmission line is a high-temperature shielded transmission line, the connection between the signal transmission line and the temperature sensor is covered with high-temperature adhesive, the outer layer of the signal transmission line is covered with a fire-retardant sleeve, and the inside of the signal transmission line has a double-layer electromagnetic shielding structure.

[0016] In one implementation, in step S4, the acquisition device is a 24-bit analog-to-digital converter, which converts the 8 analog electrical signals from the four sets of acquisition sensors into digital signals in real time. The 24-bit analog-to-digital converter adopts a hardware synchronous triggering mechanism, which distributes a uniform clock source value to all acquisition sensors through the main control system so that the time deviation between each channel is less than or equal to 1μs.

[0017] As one implementation method, in step S4, the logic architecture of the main control system adopts an FPGA+ARM architecture. The FPGA is responsible for real-time signal sampling and digital filtering, and the ARM performs data encapsulation and transmits it to the host computer.

[0018] As one implementation method, in step S5, the data transmission line adopts a layered anti-interference transmission method, and the physical layer of the data transmission line adopts a twisted pair metal braided shielding layer to adapt to the field environment.

[0019] In addition, the present invention also provides a high-temperature gas flow load monitoring device, including a support platform, a gas generating device, a sensor device, a signal transmission line, a data acquisition device, a data transmission line, a host computer, and a computer. The gas generating device is disposed above the support platform, and the sensor device is disposed on the support platform and spaced below the gas generating device. The signal transmission line is connected to the sensor device and the data acquisition device respectively. The data transmission line is connected to the data acquisition device and the host computer respectively. The computer is connected to the host computer. The high-temperature gas flow load monitoring device is used to implement the steps of the high-temperature gas flow load monitoring method according to any one of the above claims.

[0020] Compared with traditional technologies, the beneficial effects of the high-temperature gas flow load monitoring method and device of the present invention are as follows: The present invention obtains and monitors the load data of high-temperature gas flow in real time through field tests. The acquisition device integrates four sets of acquisition sensors and arranges these four sets of acquisition sensors evenly in the field environment of the gas flow, which can collect load data of temperature and pressure at four points at the same time. Thus, the present invention can obtain load data information such as temperature and pressure of high-temperature gas flow in real time, which not only realizes the feasibility of real-time load monitoring in the core area of ​​the gas flow field, but also provides basic data for the structural integrity and stability analysis of the support platform.

[0021] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a flowchart of the steps of the high-temperature gas flow load monitoring method of the present invention;

[0023] Figure 2 This is a schematic diagram of the high-temperature gas flow load monitoring device of the present invention;

[0024] Figure 3 This is a schematic diagram of the high-temperature gas flow load monitoring method of the present invention;

[0025] Figure 4 This is a system architecture diagram of the data acquisition device for the high-temperature gas flow load monitoring method of the present invention;

[0026] Figure 5 The computer displays a partial temperature data curve in real time for the high-temperature gas flow load monitoring device of the present invention;

[0027] Figure 6 The computer displays a real-time pressure data curve for the high-temperature gas flow load monitoring device of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Support platform; 20. Gas generator; 30. Sensor device; 40. Signal transmission line; 50. Data acquisition equipment; 60. Data transmission line; 70. Computer. Detailed Implementation

[0030] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this invention.

[0032] In related technologies, under high-temperature (above 1800℃) natural gas flow environments, the thermal loads borne by ground equipment directly affect its structural integrity and stability. Therefore, it is necessary to measure and evaluate environmental load data under high-temperature gas flow conditions to ensure that ground equipment does not experience structural failure. Current research on high-temperature gas flow load data borne by ground equipment generally obtains predictive data through numerical simulation. Other methods combine numerical simulation with scaled-down experiments to verify the model. Data obtained through actual on-board testing is relatively scarce. However, due to limitations in the research method combining numerical simulation and scaled-down experiments, firstly, the physical field reproduction is restricted by similarity criteria, leading to distortions in flow and heat transfer. Secondly, it cannot reproduce the impurity scouring, vibration loads, and extreme temperatures of real gas flow, weakening the complexity of the environment and making it difficult to introduce random disturbances from the real environment, resulting in idealized boundary conditions and insufficient coverage of extreme conditions. Furthermore, considering the defects in the equivalence of scaled-down materials, simulation results are likely to be distorted, making it difficult not only to accurately reproduce the actual on-site conditions but also to completely reconstruct the data of the entire experimental process.

[0033] In view of this, the present invention provides a method and device for monitoring the load of high-temperature gas flow. The method can acquire load data information such as temperature and pressure of high-temperature gas flow in real time, which not only realizes the feasibility of real-time load monitoring in the core area of ​​the gas flow field, but also provides basic data for the structural integrity and stability analysis of the support platform.

[0034] Please see Figures 1 to 6 This invention provides a method for monitoring high-temperature gas flow load, comprising the following steps:

[0035] S1, Generate gas flow: Send an action command to the gas generator 20 so that the gas generator 20 generates a high-temperature gas flow and acts on the support platform 10 below the gas generator 20.

[0036] S2, Acquisition and detection of load data of high temperature gas flow: A sensor device 30 is arranged below the gas generator 20 to monitor and acquire the load data of high temperature gas flow in real time, and the acquired physical data is converted into analog electrical signals.

[0037] S3, Analog electrical signal is transmitted to acquisition device 50: The acquired analog electrical signal is transmitted to acquisition device 50 through signal transmission line 40;

[0038] S4, Analog electrical signal conversion: The received analog electrical signal is converted into a digital signal in real time by the acquisition device 50;

[0039] S5, Digital signal transmission: The digital signal output by the acquisition device 50 is transmitted to the host computer for data processing and storage via the data transmission line 60.

[0040] S6, Digital Signal Processing: The computer 70 receives and processes the digital signals stored in the host computer, and realizes real-time display and storage of the load data of the high-temperature gas flow.

[0041] In step S1, after receiving the action command, the gas generator 20 generates a high-temperature gas flow, and the temperature value of the high-temperature gas flow is greater than or equal to 1800°C.

[0042] In step S2, the sensor device 30 includes four sets of acquisition sensors. These four sets of sensors are spaced apart on the support platform 10 and located below the gas generator 20. The four sets of sensors are evenly distributed at the four corners of a square. Each set of sensors includes a temperature sensor and a pressure sensor. This can be understood as follows: in step S2, the sensor device 30, through the even distribution of the four sets of acquisition sensors in the high-temperature gas flow field environment, can collect temperature and pressure load data at four points simultaneously.

[0043] The temperature sensor is a thin-film sensor with an indium oxide electrode material, achieving a sensitivity of up to 100 μV / ℃. The substrate is an alumina ceramic sheet. This design provides advantages such as low flow field interference, fast response, and high-temperature stability, enabling it to provide accurate, reliable, and detailed temperature data in extreme high-temperature and complex flow field environments. The pressure sensor is a piezoresistive SiC pressure sensor. To achieve high sensitivity, the piezoresistor is placed in the region of maximum stress on the diaphragm and connected by metal leads to form a Wheatstone bridge. This converts the difficult-to-measure strain changes caused by diaphragm deformation into changes in the piezoresistor resistance, which are ultimately reflected in the output voltage.

[0044] In step S3, the signal transmission line 40 is a high-temperature shielded transmission line. The connection point between the signal transmission line 40 and the temperature sensor is covered with high-temperature adhesive. The outer layer of the signal transmission line 40 is sleeved with a fire-retardant sleeve, and the signal transmission line 40 has an embedded double-layer electromagnetic shielding structure. This can be understood as follows: the connection point between the signal transmission line 40 and the temperature sensor is protected with high-temperature adhesive; the high-temperature resistant outer layer of the signal transmission line 40 uses a fire-retardant sleeve, employing multiple protective measures to ensure the reliability of the signal transmission line 40; the outer flame-retardant and wear-resistant protective sleeve of the signal transmission line 40 resists mechanical vibration and extreme environments; the internal double-layer electromagnetic shielding structure of the signal transmission line 40 suppresses interference; and waterproof and flame-retardant connectors prevent leakage, ensuring data integrity and stable system operation.

[0045] like Figure 3 As shown, in step S4, the acquisition device 50 is a 24-bit high-precision Σ-Δ analog-to-digital converter (ADC) that converts eight analog electrical signals from four sets of acquisition sensors into digital signals in real time. To achieve synchronous acquisition across multiple channels, the 24-bit high-precision Σ-Δ ADC employs a hardware synchronization triggering mechanism, distributing a unified clock source value to all acquisition sensors through the main control system to ensure that the time deviation between channels is less than or equal to 1 μs. The clock source value can be set to 100 MHz. Furthermore, in step S4, the main control system's logic architecture adopts an FPGA+ARM architecture. The FPGA is responsible for real-time signal sampling and digital filtering, while the ARM performs data encapsulation and transmits the data to the host computer.

[0046] In step S5, the data transmission line 60 adopts a layered anti-interference transmission method, and the physical layer of the data transmission line 60 uses a twisted-pair metal braided shielding layer to adapt to the field environment. The entire system of this invention supports 12-channel synchronous transmission, providing high-precision end-to-end assurance for temperature, pressure, and other analyses from acquisition to storage.

[0047] like Figure 5 and Figure 6As shown, the computer 70 of this invention can display curves of some temperature and pressure data in real time after receiving and processing digital signals. By receiving and processing the raw data in real time through the computer 70, and combining it with the start time of the gas generator 20, the load data can be displayed, analyzed, and stored, thereby realizing the functions of high-precision analysis of multiple physical quantities, real-time interaction, and long-term traceability.

[0048] like Figure 2 As shown, the present invention also provides a high-temperature gas flow load monitoring device, including a support platform 10, a gas generating device 20, a sensor device 30, a signal transmission line 40, a data acquisition device 50, a data transmission line 60, a host computer, and a computer 70. The gas generating device 20 is disposed above the support platform 10, and the sensor device 30 is disposed on the support platform 10 and spaced below the gas generating device 20. The signal transmission line 40 is connected to the sensor device 30 and the data acquisition device 50 respectively. The data transmission line 60 is connected to the data acquisition device 50 and the host computer respectively. The computer 70 is connected to the host computer. The high-temperature gas flow load monitoring device is used to implement the steps of the high-temperature gas flow load monitoring method according to any one of the above claims.

[0049] Therefore, the beneficial effects of the high-temperature gas flow load monitoring method and device of the present invention are as follows: The present invention obtains load data of high-temperature gas flow through field test and performs real-time monitoring. The acquisition device integrates four sets of acquisition sensors and arranges these four sets of acquisition sensors evenly in the field environment of the gas flow, which can collect load data of temperature and pressure at four points at the same time. Thus, the present invention can obtain load data information such as temperature and pressure of high-temperature gas flow in real time, which not only realizes the feasibility of real-time load monitoring in the core area of ​​the gas flow field, but also provides basic data for the structural integrity and stability analysis of the support platform 10.

[0050] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the high-temperature gas flow load monitoring method and device. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for monitoring high-temperature gas flow load, characterized in that, Includes the following steps: S1, Generate gas flow: Send an action command to the gas generator to cause the gas generator to generate a high-temperature gas flow and act on the support platform below the gas generator. S2, Acquisition and detection of load data of high-temperature gas flow: Sensor devices are arranged below the gas generator to monitor and acquire load data of high-temperature gas flow in real time, and the acquired physical data is converted into analog electrical signals. S3, Analog electrical signal transmission to acquisition device: The acquired analog electrical signal is transmitted to the acquisition device through a signal transmission line; S4, Analog-to-digital signal conversion: The received analog-to-digital signal is converted into a digital signal in real time through the acquisition device; S5, Digital Signal Transmission: The digital signal output by the acquisition device is transmitted to the host computer for data processing and storage via a data transmission line; S6, Digital Signal Processing: The computer receives and processes the digital signals stored in the host computer, and realizes real-time display and storage of the load data of the high-temperature gas flow.

2. The high-temperature gas flow load monitoring method according to claim 1, characterized in that: In step S1, the temperature of the high-temperature gas flow is greater than or equal to 1800°C.

3. The high-temperature gas flow load monitoring method according to claim 1, characterized in that: In step S2, the sensor device includes four sets of acquisition sensors, which are spaced apart on the support platform and located below the gas generator. Each set of acquisition sensors includes a temperature sensor and a pressure sensor.

4. The high-temperature gas flow load monitoring method according to claim 3, characterized in that: In step S2, the four sets of acquisition sensors are distributed at the four corners of a square. The temperature sensor is a thin-film sensor, and the pressure sensor is a piezoresistive pressure sensor.

5. The high-temperature gas flow load monitoring method according to claim 1, characterized in that: In step S3, the signal transmission line is a high-temperature shielded transmission line, the connection between the signal transmission line and the temperature sensor is covered with high-temperature adhesive, the outer layer of the signal transmission line is covered with a fireproof and flame-retardant sleeve, and the inside of the signal transmission line has a double-layer electromagnetic shielding structure.

6. The high-temperature gas flow load monitoring method according to claim 3, characterized in that: In step S4, the acquisition device is a 24-bit analog-to-digital converter, which converts the 8 analog electrical signals from the four sets of acquisition sensors into digital signals in real time. The 24-bit analog-to-digital converter adopts a hardware synchronous triggering mechanism, which distributes a uniform clock source value to all acquisition sensors through the main control system so that the time deviation between each channel is less than or equal to 1μs.

7. The high-temperature gas flow load monitoring method according to claim 6, characterized in that: In step S4, the main control system adopts an FPGA+ARM architecture. The FPGA is responsible for real-time signal sampling and digital filtering, while the ARM performs data encapsulation and transmits it to the host computer.

8. The high-temperature gas flow load monitoring method according to claim 1, characterized in that: In step S5, the data transmission line adopts a layered anti-interference transmission method, and the physical layer of the data transmission line adopts a twisted pair metal braided shielding layer to adapt to the field environment.

9. A high-temperature gas flow load monitoring device, characterized in that: The system includes a support platform, a gas generator, sensor devices, signal transmission lines, data acquisition equipment, data transmission lines, a host computer, and a computer. The gas generator is positioned above the support platform, and the sensor devices are positioned on the support platform and spaced below the gas generator. The signal transmission lines are connected to the sensor devices and the data acquisition equipment, respectively. The data transmission lines are connected to the data acquisition equipment and the host computer, respectively. The computer is connected to the host computer. The high-temperature gas flow load monitoring device is used to implement the steps of the high-temperature gas flow load monitoring method according to any one of claims 1 to 8.

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