Temperature and pressure measuring device for high-temperature and high-pressure flow channel

Abstract

The utility model relates to a temperature and pressure measuring device for a high-temperature and high-pressure flow channel, which comprises a temperature measuring module and a pressure measuring module, and fluid in a temperature measuring area is communicated with the inlet side of the pressure measuring module; the temperature measuring module and the pressure measuring module are integrated and used for measuring the temperature and the pressure of the same position in the pipeline, the distance between the temperature measuring module and the pressure measuring module is smaller than or equal to 20 mm, measuring positions are consistent, and measuring precision is improved. The pressure measuring module measures pressure through the communication pipeline, and enables the pressure sensor to avoid a high-temperature area, thereby improving the reliability. And an optimized joint structure and a sealing assembly are adopted, so that the sealing performance is enhanced, and signal instability is prevented. An adjustable pressure guide pipe and a cooling module are introduced, so that the environmental adaptability is improved. The protection tube assembly structure effectively protects temperature and pressure measuring elements, prolongs the service life, and realizes rapid installation and maintenance through threaded connection and modular design. The utility model overcomes the defects of measuring point deviation, poor sealing, easy damage of the sensor and poor adaptability in the prior art, and is suitable for gas turbines and other high-temperature and high-pressure runner systems.

Description

A temperature and pressure measuring device for a high-temperature and high-pressure flow channel Technical Field

[0001] This utility model belongs to the field of high temperature and high pressure flow channel measurement, specifically relating to a temperature and pressure measuring device for high temperature and high pressure flow channels. Background Technology

[0002] Gas turbines are widely used in aviation, power generation, and industrial power systems. Their core components, including the compressor, combustion chamber, and turbine, all involve high-temperature and high-pressure flow channels. Typically, the temperature range of a gas turbine can reach 600-2000℃, and the pressure range is 0.1MPa-4.5MPa. Under such extreme operating conditions, the temperature and pressure parameters inside the flow channels directly affect the equipment's operating efficiency, combustion stability, and overall safety, thus placing extremely high demands on measurement accuracy.

[0003] In gas turbines and other high-temperature, high-pressure flow systems, the consistency of measurement positions is crucial. Generally, the deviation in measurement position is positively correlated with the measurement errors in temperature and pressure. This measurement deviation, on the pipe cross-section, can be divided into two vector deviations: deviations in the X-axis and Y-axis directions, with at least one direction having a positive correlation with pressure.

[0004] Typically, a measurement position deviation exceeding 20mm may result in excessive temperature and pressure measurement errors, failing to meet the needs of existing system control and optimization. In other words, to achieve refined system control and optimization, it is necessary to further reduce the measured temperature and pressure errors.

[0005] In high-temperature and high-pressure flow channels, temperature and pressure change over time, resulting in complex operating conditions. Existing measuring devices have this problem: most devices use independent thermocouples and pressure sensors to measure temperature and pressure separately. Because the measuring points cannot be completely aligned, a deviation of more than 20mm occurs, leading to inaccurate measurement data. Alternating measurements result in time differences, meaning the data is not measured at the same instant, which does not meet the purpose of synchronous adjustment and makes the device unusable.

[0006] Therefore, it is urgent to realize how to simultaneously acquire temperature and pressure signals at the same location in a simple structure, while meeting the requirements of sealing and operational reliability, in order to meet the needs of refined system control and optimization. Summary of the Invention

[0007] This invention addresses the problem of temperature and pressure measurement deviations in gas turbines and other high-temperature and high-pressure flow channel systems by proposing an integrated temperature and pressure measurement device. Through technologies such as simultaneous data acquisition, optimized sealing, and environmentally adaptable structures, it achieves high-precision and reliable synchronous temperature and pressure measurement.

[0008] The purpose of this utility model is to provide a temperature and pressure measuring device for a high-temperature and high-pressure flow channel, comprising: a temperature measuring module and a pressure measuring module, wherein the fluid in the measuring area of ​​the temperature measuring module is connected to the inlet side of the pressure measuring module; the temperature measuring module and the pressure measuring module are integrated and used to measure the temperature and pressure at the same location in the pipeline, and the distance between the inlet side and the temperature measuring module is less than or equal to 20mm;

[0009] The pressure testing module completes pressure testing by connecting the fluid in the pipeline, and the ambient temperature of the pressure testing module and the temperature of the connected fluid are lower than the temperature of the fluid in the pipeline.

[0010] The technical solution of this application has the following technical features:

[0011] Integrated temperature and pressure measurement structure; fluid communication pipe structure;

[0012] The temperature measurement module and the pressure measurement module are arranged at the same point, with a measurement position deviation of ≤20mm; a fluid communication pipe is used to ensure that the fluid environment in the pressure acquisition area is consistent with that in the temperature measurement area;

[0013] Temperature and pressure data are collected simultaneously to improve measurement accuracy and avoid time difference errors;

[0014] To meet the high-precision requirements of optimized control of gas turbine operating conditions.

[0015] The technical solution provided in this application also has the following technical features:

[0016] Preferably, in one embodiment of this application, a connector is included, the connector including a connector body, a copper gasket and an extension section, and the upper end face of the connector body is provided with two through holes for installing a temperature measuring component and a pressure measuring component;

[0017] The temperature measuring component includes an armored thermocouple and a sealed connector I. The armored thermocouple passes through the sealed connector I and is connected to the connector body, with its head contacting the position to be measured.

[0018] The pressure measuring component includes a pressure sensor, a sealing connector II, and a pressure tapping tube. The front end of the pressure tapping tube is welded to the connector body, and the end is connected to the pressure sensor.

[0019] The protective tube assembly includes a protective tube, a protective cap, and a nut. The protective tube is threadedly connected to the connector body and is used to protect the temperature measuring component and the pressure measuring component.

[0020] It adopts a sealed joint + copper gasket + threaded connection to enhance the sealing performance; it selects a high-temperature resistant alloy / ceramic sealing structure to adapt to high temperature and high pressure environments; it ensures stable measurement signals under high temperature and high pressure environments and is not affected by leakage; it improves the life of the device and reduces maintenance costs.

[0021] Preferably, in one embodiment of this application, the length of the extension section is adjustable to complete measurements at different depths, making it suitable for flexible applications with different cylinder thicknesses and different flow channel depths.

[0022] Preferably, in one embodiment of this application, the temperature measuring component and the pressure measuring component are both installed on the same connector, and the armored thermocouple of the temperature measuring component extends into the pipe to be tested, and the pressure measuring component extends into the test position in the pipe to be tested through the pressure tapping tube; the distance between the extension end of the armored thermocouple and the inlet side of the extension end of the pressure tapping tube is less than or equal to 20mm.

[0023] Preferably, in one embodiment of this application, the connector is connected to the outer wall of the pipe or channel to be tested via threads and is sealed by a copper gasket.

[0024] Preferably, in one embodiment of this application, the length of the pressure tapping tube is adjustable, so that the pressure sensor avoids the high temperature inside the flow channel; the protective tube assembly prevents the measuring element from being directly exposed to the high temperature and high pressure flow channel; the pressure tapping tube is optimized to reduce the operating temperature of the pressure sensor and improve its durability.

[0025] Preferably, in one embodiment of this application, the protective tube assembly includes an inner portion and an outer portion. The inner portion is threadedly connected to the connector, and the outer portion is fixed by a nut, for protecting the temperature measuring component and the pressure measuring component.

[0026] Preferably, in one embodiment of this application, the sheathed thermocouple head contacts the position to be measured, and fixation and sealing are achieved by tightening the sealing joint I.

[0027] Preferably, in one embodiment of this application, the pressure sensor is connected to the connector body via a pressure-sensing tube and a sealing connector II, and is used to measure the pressure at the location to be measured.

[0028] Preferably, in one embodiment of this application, the protective cover has an opening for the tail wires of the temperature measuring component and the pressure measuring component to pass through, and is fixed by a nut.

[0029] Preferably, in one embodiment of this application, the middle section of the connector is a cylindrical metal part with an external hexagonal shape and threads at both ends, and the extension section is used to extend to the position to be measured for sealing during temperature and pressure measurement.

[0030] Preferably, in one embodiment of this application, the pressure measuring module is equipped with a cooling module to improve the environment of the pressure measuring module and prevent it from being affected by high temperature environment, which could lead to failure or affect the measurement accuracy.

[0031] Preferably, in one embodiment of this application, the fluid flow inside the high-temperature and high-pressure channel is complex, accompanied by high-frequency vibration and pulsating pressure, which can easily cause the temperature and pressure measuring modules to be impacted, resulting in data fluctuations or measurement errors. In the fixing structure of the temperature and pressure measuring modules, anti-vibration washers, buffer springs, or damping layers are added to reduce the impact of external vibration on the measuring elements. At the same time, the sensor support structure is optimized to improve measurement stability. This reduces the interference of high-frequency vibration on the temperature and pressure measuring signals, improves the continuity and accuracy of the measurement data, and ensures the long-term stable operation of the device.

[0032] Preferably, in one embodiment of this application, even if the temperature of the pressure measuring module is reduced by the pressure tapping tube and cooling module, the ambient temperature may still change, causing errors in the pressure sensor's measurement data due to temperature drift. Introducing a temperature compensation circuit or intelligent correction algorithm into the pressure measuring module monitors the temperature around the sensor in real time and dynamically corrects the measured values, reducing errors caused by temperature fluctuations; improving the accuracy of the pressure measurement data; and enabling the device to operate stably over a wider temperature range, meeting the measurement needs of different operating conditions.

[0033] Preferably, in one embodiment of this application, during long-term operation, a single sealing structure may age and leak due to high temperature and high pressure environment, affecting measurement accuracy and device life; by adopting a double or multi-layer sealing design, the first layer is a metal seal, such as a copper gasket, to ensure basic sealing function; the second layer uses a high temperature resistant elastic sealing material, such as a ceramic coating or fluororubber, to enhance sealing durability and avoid leakage due to seal aging; such a double-layer seal significantly improves sealing reliability, reduces maintenance requirements, and ensures the sealing stability of the measuring device under long-term high temperature and high pressure environment.

[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0035] This invention proposes a temperature and pressure measuring device suitable for high-temperature and high-pressure flow channels. It adopts an integrated structure, an adjustable extension section, an optimized sealing structure, and a protective tube assembly, which effectively improves the measurement accuracy, sealing performance, adaptability, and reliability, and meets the temperature and pressure measurement requirements under high-temperature and high-pressure environments.

[0036] 1. To address the issues of large measurement position deviations and inconsistent data, this application employs an integrated structure of temperature and pressure measurement modules, ensuring a measurement point spacing of ≤20mm. Furthermore, a fluid communication pipe maintains a consistent measurement environment, overcoming the errors caused by excessive measurement point deviations, inaccurate data, and time differences inherent in traditional measuring devices. This achieves the technical benefits of synchronous acquisition of temperature and pressure data, improved measurement accuracy, and optimized system control. Errors are reduced by over 80% under high-temperature and high-pressure flow channel conditions, ensuring synchronous temperature and pressure measurement.

[0037] 2. In order to solve the leakage problem under high temperature and high pressure environment, this application adopts a sealing joint, copper gasket and threaded connection, and selects high temperature resistant alloy or ceramic sealing material. This overcomes the problem of poor sealing performance and easy leakage leading to unstable signal in the existing device, and achieves the technical effect of ensuring stable measurement signal, improving device life and reducing maintenance cost.

[0038] 3. In order to solve the problem of low reliability of measuring devices under high temperature and high pressure environments, this application adopts protective tube assembly to prevent the measuring elements from being directly exposed to extreme environments, and designs an adjustable pressure tap to reduce the operating temperature of the pressure sensor. This overcomes the problems of easy damage and difficult maintenance of existing measuring devices, and achieves improved equipment stability, adaptability to different flow channel structures, and improved reliability. Attached Figure Description

[0039] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0040] Figure 1 is a schematic diagram of the temperature and pressure measuring device for a high-temperature and high-pressure flow channel according to this utility model.

[0041] Figure 2 is a partial enlarged view of a temperature and pressure measuring device for a high-temperature and high-pressure flow channel according to this utility model;

[0042] Figure 3 shows the top view, front view, left view and perspective view of a temperature and pressure measuring device for a high-temperature and high-pressure flow channel according to this utility model.

[0043] Components in the diagram:

[0044] 1. Pipeline

[0045] 2. Connector

[0046] 21. Connector body

[0047] 22. Copper gasket

[0048] 23. Extension Section

[0049] 3. Temperature measuring component

[0050] 31. Armored thermocouple

[0051] 32. Sealed Joint I

[0052] 4. Pressure measuring components

[0053] 41. Pressure sensor

[0054] 42. Sealing Joint II

[0055] 43. Pressure tapping pipe

[0056] 5. Assembly of protective pipes

[0057] 51. Protective cover

[0058] 52. Nut

[0059] 53. Protective tube. Detailed Implementation

[0060] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.

[0061] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0064] As shown in Figures 1-3, a temperature and pressure measuring device for a high-temperature and high-pressure flow channel includes a temperature measuring module and a pressure measuring module, wherein the fluid in the measuring area of ​​the temperature measuring module is connected to the inlet side of the pressure measuring module; the temperature measuring module and the pressure measuring module are integrated and used to measure the temperature and pressure at the same location in the pipeline, and the distance between the inlet side and the temperature measuring module is less than or equal to 20mm;

[0065] The pressure measuring module completes the pressure measurement through the fluid in the connecting pipe 1, and the ambient temperature of the pressure measuring module and the temperature of the connected fluid are lower than the temperature of the fluid in the pipe 1.

[0066] When implementing this application, the key points are as follows:

[0067] Integrated temperature and pressure measurement structure: By integrating temperature and pressure measurement modules within the same measurement area, synchronous measurement of temperature and pressure is achieved, avoiding data errors caused by measurement point deviations and improving measurement accuracy;

[0068] Measurement location consistency: The pressure measurement module and the temperature measurement module are fluidly connected, and the distance between them is less than or equal to 20mm. This ensures the spatiotemporal consistency of the measurement data, overcomes the time difference problem of traditional measurement methods, and improves measurement reliability.

[0069] Fluid-connecting pipe structure: A connecting pipe 1 is adopted, which enables the pressure measuring module to complete pressure measurement through the fluid in pipe 1, ensuring that the pressure value measured by the pressure measuring module truly reflects the actual pressure in the flow channel and reducing measurement errors;

[0070] Temperature optimization: By connecting the pipe structure, the temperature of the environment where the pressure measuring module is located and the temperature of the measuring fluid are both lower than the temperature of the main fluid in pipe 1, avoiding damage to the pressure sensor from high temperature and improving the high temperature resistance and long-term reliability of the measuring device.

[0071] In high-temperature and high-pressure flow channels, the measuring device needs to penetrate the pipe wall to enter the internal flow channel. The existing device's sealing structure is relatively weak, which can easily cause gas leakage, leading to unstable measurement signals and even damage to the measuring elements. Since the cylinder thickness and flow channel depth vary for different gas turbine models, the measuring device needs to have the ability to flexibly adjust the measurement depth. However, existing devices usually lack an adjustable structure, making it difficult to adapt to different application scenarios. The high-temperature and high-pressure environment places extremely high demands on the stability of the measuring elements. Existing devices have complex structures, are difficult to install, and lack effective protection measures, resulting in low long-term operational reliability.

[0072] The working principle of this application is as follows:

[0073] This embodiment is based on the principle of integrated temperature and pressure measurement. By arranging temperature and pressure modules in the same measurement area and ensuring that the measurement position deviation between the two is less than or equal to 20mm, synchronous measurement of temperature and pressure is achieved. The temperature module is used to detect the temperature of the fluid in the flow channel, while the pressure module measures the pressure through the fluid in the connecting pipe 1. At the same time, through environmental optimization structure, the operating temperature of the pressure module is lower than the temperature of the main flow channel to improve measurement accuracy and equipment reliability.

[0074] The working process of this application is as follows: High-temperature and high-pressure gas flows through the temperature measuring module in the flow channel. The temperature measuring sensor, such as a sheathed thermocouple, collects the fluid temperature and outputs a signal to the measurement system. The fluid in the flow channel enters the pressure measuring module through the connecting pipe 1. The pressure sensor measures the fluid pressure and outputs a signal. The temperature measuring module and the pressure measuring module are located close to each other, with a distance of ≤20mm. The data measured by both can be regarded as the instantaneous temperature and pressure at the same location, realizing synchronous acquisition and transmission to the control system for processing. Through the structure of the connecting pipe, the ambient temperature of the pressure measuring module is lower than that of the main flow channel, ensuring that the pressure sensor works at a suitable temperature and improving long-term reliability.

[0075] Specifically, in one embodiment of this application, the connector 2 includes a connector body 21, a copper gasket 22 and an extension 23. The upper end face of the connector body 21 is provided with two through holes for installing the temperature measuring component 3 and the pressure measuring component 4.

[0076] Temperature measuring component 3 includes armored thermocouple 31 and sealing connector I 32. Armored thermocouple 31 passes through sealing connector I 32 and is connected to connector body 21, with its head contacting the position to be measured.

[0077] The pressure measuring component 4 includes a pressure sensor 41, a sealing connector II 42, and a pressure tapping tube 43. The front end of the pressure tapping tube 43 is welded to the connector body 21, and the end is connected to the pressure sensor 41.

[0078] The protective tube assembly 5 includes a protective tube 53, a protective cap 51, and a nut 52. The protective tube 53 is threadedly connected to the connector body 21 and is used to protect the temperature measuring component 3 and the pressure measuring component 4.

[0079] To address the issue of inconsistent data caused by measurement position deviation, a through hole is provided on connector 2, allowing temperature measuring component 3 and pressure measuring component 4 to be installed on the same component. This ensures that the distance between their measurement points is less than or equal to 20mm, overcoming the problems of scattered measurement points, large data errors, and asynchronous timing in traditional measuring devices. This achieves the technical effect of synchronous temperature and pressure measurement, improved measurement accuracy, and optimized measurement and control of gas turbine and high-temperature flow channel systems.

[0080] To address the issues of leakage and unstable measurement signals under high temperature and high pressure environments, sealing joints I 32 and II 42 are used to connect the armored thermocouple 31 and the pressure sensor 41 to the joint body 21 through a sealing structure. Copper gaskets 22 are used to enhance the sealing effect, overcoming the problems of poor sealing and unstable measurement in existing devices. This achieves the technical effects of ensuring reliable measurement data, avoiding high temperature and high pressure leakage, and improving the service life of the device.

[0081] To address the issues of pressure measurement being affected by high temperatures and sensor damage, the pressure tapping tube 43 connects the connector body 21 and the pressure sensor 41, allowing the fluid to be buffered before pressure measurement and reducing the ambient temperature of the pressure measurement module. This overcomes the problems of traditional pressure measurement devices being directly exposed to high-temperature fluids, resulting in short sensor lifespan and inaccurate measurements. It achieves the technical effects of extending the lifespan of the pressure sensor, improving measurement accuracy, and enhancing long-term stability.

[0082] To address the problem of damage to temperature and pressure measuring components caused by high temperature and high pressure environments, a protective tube assembly 5, including a threaded protective tube 53, a protective cover 51, and a nut 52, is used to encapsulate and protect the temperature measuring component 3 and the pressure measuring component 4. This overcomes the problems of easy damage and difficult maintenance of existing measuring components exposed to harsh environments, improves the durability of the measuring device, reduces maintenance costs, and enhances the reliability of the equipment.

[0083] Specifically, in one embodiment of this application, the length of the extension segment 23 is adjustable to complete measurements at different depths.

[0084] Specifically, in one embodiment of this application, the temperature measuring component 3 and the pressure measuring component 4 are both installed on the same connector 2, and the armored thermocouple 31 of the temperature measuring component 3 extends into the pipe 1 to be tested, and the pressure measuring component 4 extends into the test position in the pipe 1 to be tested through the pressure tapping tube 43; the distance between the extended end of the armored thermocouple 31 and the inlet side of the extended end of the pressure tapping tube 43 is less than or equal to 20mm.

[0085] Specifically, in one embodiment of this application, the connector 2 is connected to the outer wall of the pipe 1 or flow channel to be tested via threads and sealed by a copper gasket 22; the structure of the connector body 21 ensures that the temperature measuring component 3 and the pressure measuring component 4 can be tightly installed at the same measuring point, thereby reducing measurement deviation; the armored thermocouple 31 is fixed to the connector body 21 via a sealing connector I 32 and extends into the pipe 1 to accurately sense the fluid temperature in real time, while the sealing connector I 32 effectively prevents high-temperature and high-pressure gas leakage; the pressure sensor 41 is connected to the connector body 21 via a sealing connector II 42 and is connected via a pressure tap 4 3. The internal pressure of pipe 1 is transmitted to the pressure sensor, so that the pressure measuring element is in a relatively low temperature environment, which improves the heat resistance and service life of the sensor; the adjustable structure of extension section 23 is suitable for pipes 1 with different wall thicknesses, ensuring that the measuring element can be accurately located at the target measuring point and meet the measurement consistency requirements within 20mm; the protective tube 53 is connected to the connector body 21 by thread and locked by nut 52, forming a closed structure with the protective cover 51, thereby effectively protecting the temperature and pressure measuring elements from the corrosion of high temperature, high pressure airflow and external impurities, and improving the long-term reliability and stability of the measurement system.

[0086] Specifically, in one embodiment of this application, the length of the pressure tapping tube 43 is adjustable, allowing the pressure sensor 41 to avoid the high temperature inside the flow channel. By optimizing the length adjustment mechanism of the pressure tapping tube 43, a suitable pressure tapping path can be selected according to different working conditions, keeping the pressure sensor 41 away from the high-temperature fluid area and avoiding performance degradation or failure due to prolonged exposure to high temperature. The front end of the pressure tapping tube 43 is welded to the connector body 21 to ensure stable transmission of fluid pressure inside the pipe 1. At the same time, the sealing connector II 42 effectively prevents leakage, ensuring the accuracy and reliability of the measurement. The pressure sensor 41 is installed in an area away from the high-temperature fluid, so that its operating temperature is lower than the internal temperature of the pipe 1, thereby extending the service life of the sensor and improving the stability of the measurement data. This adjustable structure can be adapted to different pipe structures, enhancing the applicability of the device and enabling it to achieve accurate pressure measurement in various high-temperature and high-pressure flow channel environments.

[0087] Specifically, in one embodiment of this application, the protective tube assembly 5 includes an inner part and an outer part. The inner part is threadedly connected to the connector 2, and the outer part is fixed by a nut 52 to protect the temperature measuring component 3 and the pressure measuring component 4. The threaded connection of the inner part ensures that the protective tube 53 can be securely installed on the connector 2 and closely fit the temperature measuring component 3 and the pressure measuring component 4, thereby forming an effective shielding structure to reduce the influence of external high-temperature airflow, dust or corrosive media on the measuring elements. The outer part is locked by the nut 52 to further enhance the mechanical strength and stability of the device and prevent loosening or displacement caused by high-speed airflow or pressure fluctuations in the flow channel. This protective structure can not only extend the service life of the measuring elements, but also ensure the reliability of the measurement data under complex working conditions, and improve the overall durability and environmental adaptability of the temperature and pressure measurement system.

[0088] Specifically, in one embodiment of this application, the sheathed thermocouple 31 is contacted at the measurement location by tightening the sealing joint I 32 to achieve fixation and sealing. The head structure of the sheathed thermocouple 31 is in close contact with the area of ​​the fluid to be measured, enabling real-time sensing of fluid temperature changes. The sealing joint I 32 fixes the sheathed thermocouple 31 to the joint body 21 via a threaded connection, and ensures its sealing performance through tightening. This sealing structure effectively prevents leakage of high-temperature gas or fluid, ensuring the stability of heat exchange and measurement accuracy between the thermocouple and the pipeline, while preventing the intrusion of external contaminants or impurities, ensuring the accuracy and reliability of the measurement signal. Through this combination of fixation and sealing, the sheathed thermocouple 31 can work stably for a long time under high temperature and high pressure environments, meeting the requirements for accurate temperature measurement.

[0089] Specifically, in one embodiment of this application, the pressure sensor 41 is connected to the connector body 21 via a pressure tapping tube 43 and a sealing connector II 42, and is used to measure the pressure at the location to be measured. The structure of the pressure tapping tube 43 enables it to effectively transmit the pressure signal inside the pipe 1 to the pressure sensor 41, while avoiding direct exposure of the sensor to the high-temperature environment in the flow channel, ensuring that the sensor operates under lower temperature conditions to improve its service life and measurement stability. The sealing connector II 42 ensures the airtightness of the connection, preventing leakage of high-temperature airflow or fluid, and ensuring that the measurement accuracy is not affected by external interference. The pressure signal received by the pressure sensor 41 can accurately reflect the pressure of the fluid inside the pipe 1, thereby achieving high-precision pressure measurement and meeting the high requirements for pressure measurement in high-temperature and high-pressure flow channels. Through this structure, the entire measurement system can operate reliably in extreme environments and provide accurate and stable measurement data.

[0090] Specifically, in one embodiment of this application, the protective cover 51 has an opening for the tail wires of the temperature measuring component 3 and the pressure measuring component 4 to pass through, and is fixed by a nut 52. The opening structure allows the tail wires of the temperature measuring component 3 and the pressure measuring component 4 to pass smoothly through the protective cover 51, avoiding direct contact between the lines and the external environment, while protecting the tail wires from high temperature, high pressure airflow or physical damage. By fixing the nut 52, the protective cover 51 can be firmly fixed to the connector 2, ensuring the stability and sealing of the protective structure, preventing any external contaminants or fluids from entering the protected area, and ensuring the long-term reliability of the measurement system. This structure effectively protects the tail wires of the measuring elements, avoids electrical connection failures caused by environmental factors, and thus improves the safety, reliability and stability of the overall temperature and pressure measurement system.

[0091] Specifically, in one embodiment of this application, the middle section of the connector 2 is a cylindrical metal part with an external hexagonal shape and threads at both ends. The extension section 23 is used to extend to the position to be measured for sealing during temperature and pressure measurement. The hexagonal structure of the connector 2 facilitates the operation of fastening tools during installation, improving the convenience and stability of installation. The threaded structure at both ends ensures that the connector 2 can be firmly connected to the outer wall of the pipe 1 or the flow channel, and achieves the sealing function through the threaded connection. The structure of the extension section 23 allows the connector 2 to extend to the target measurement position, ensuring that the temperature measuring component 3 and the pressure measuring component 4 can accurately contact the fluid for synchronous temperature and pressure measurement, while ensuring the consistency of the measurement points. The extension section 23 not only helps to seal the measurement area, but also ensures the stability and durability of the measuring elements, effectively avoiding measurement errors, and providing reliable measurement accuracy under high temperature and high pressure environments.

[0092] Specifically, in one embodiment of this application, the pressure measuring module is equipped with a cooling module. The cooling module is used to effectively reduce the temperature of the pressure sensor 41 and its related components in a high-temperature and high-pressure environment, ensuring that the pressure sensor always operates within a suitable temperature range and avoiding performance degradation or failure due to high temperature. The cooling module monitors and adjusts the temperature of the pressure measuring module in real time through its connection with the pressure measuring module, maintaining the stability and reliability of the measurement system. The cooling module can reduce the heat load of the surrounding environment through heat exchange, liquid cooling, or air cooling, ensuring the accuracy of pressure measurement and extending the service life of the equipment. At the same time, the use of the cooling module improves the overall adaptability of the system, enabling it to operate stably for a long time in more severe high-temperature and high-pressure flow channel environments.

[0093] Specifically, in one embodiment of this application, a temperature and pressure measuring device for high-temperature and high-pressure flow channels, used for testing flow channels and pipes at high temperatures, includes a connector 2, a protective tube assembly 5, a temperature measuring component 3, and a pressure measuring component 4. The connector 2 is a one-piece assembly, mainly composed of a connector body 21, a copper gasket 22, and a measuring extension section 23. The connector body 21 mates with the copper gasket 22 and is threaded onto the pipe 1 to be tested. The length L of the extension section 23 is adjustable, allowing for measurements at different depths of the flow channel and pipe 1. The upper end face of the connector body 21 has two holes extending to the lower end face of the extension section 23. The two holes are connected to the temperature measuring component 3 and the pressure measuring component 4, respectively. One hole transmits the pressure at the measured location to the pressure measuring component 4, while the other hole connects to the temperature measuring component 3 and allows the armored thermocouple 31 to be inserted into the lower end face of the extension section 23. The connector body 21 is partially threaded and can be assembled with the protective tube assembly 5.

[0094] The temperature measuring component 3 consists of a sealing joint I 32 and an armored thermocouple 31. The lower half of the sealing joint I 32 is connected to the joint 2 by threads to form a seal, and the upper half can pass through the armored thermocouple 31 and form a seal with the armored thermocouple 31 after being tightened. After passing through the sealing joint I 32, the head of the armored thermocouple 31 will be installed on the bottom surface of the joint 2 to contact the position to be measured, so as to realize the measurement of the temperature of the position to be measured.

[0095] The pressure measuring component 4 consists of a pressure-sensing tube 43, a sealing connector II 42, and a pressure sensor 41. The front end of the pressure-sensing tube 43 is welded to the connector 2, and the end is connected to the sealing connector II 42. The length of the pressure-sensing tube 43 can be adjusted according to the installation position of the connector 2 and the temperature of the measured position until the temperature at the end where it connects to the sealing connector II 42 and the pressure sensor 41 is suitable for the sensor to operate. One end of the sealing connector II 42 is connected to the end of the pressure-sensing tube 43, and the other end is connected to the pressure sensor 41. When tightened, it will fix and seal both ends. The pressure sensor 41 is connected to the sealing connector II 42, and the pressure at the measured position is measured through the sealing connector II 42 and the pressure-sensing tube 43.

[0096] The protective tube assembly 5 consists of a protective tube 53, a protective cap 51, and a nut 52. For easy installation, the protective tube 53 is divided into inner and outer parts. The lower part of the inner side is threaded for connection to the connector 2. The upper part of the protective tube 53 is welded with bolts, which can be connected to the outer part of the protective tube 53.

[0097] The outer part of the protective tube 53 has an opening, which can be connected and fixed to the inner part of the protective tube 53 by the nut 52. The upper half has a groove to allow the protective cover 51 to be inserted, and a bolt is welded on it. The protective cover 51 can be connected and fixed to the protective cover 51 by using the nut 52. The protective cover 51 has an opening for the tail wires of the pressure measuring component 4 and the temperature measuring component 3 to pass through. After the wires are passed through, the protective cover 51 and the nut 52 are engaged and assembled on the protective tube 53.

[0098] This application enables simultaneous temperature and pressure measurements at different depths within a high-temperature, high-pressure flow channel. Using connector 2 as the main body, both the temperature measuring component 3 and the pressure measuring component 4 are mounted on connector 2, achieving an integrated and compact structure for the temperature and pressure testing device. The length of the extension section 23 of connector 2 can be adjusted to meet measurement requirements at different depths. The length of the pressure-sensing tube 43 of the pressure measuring component 4 can also be adjusted, allowing the pressure sensor 41 to perform measurements at a suitable temperature. Simultaneously, a protective tube assembly 5 protects all measuring elements.

[0099] The connector 2 has threads at both ends, and the middle section of the connector 2 is a metal part in the form of an external hexagonal connector, which includes a connector body 21, a copper gasket 22, and an extension section 23. The upper end face of the connector 2 has two holes extending through to the lower end face, and the two holes are used to install the temperature measuring component 3 and the pressure measuring component 4, respectively. The outer wall of the pipe or flow channel to be tested needs to be threaded. After the lower end of the connector 2 is combined with the copper gasket 22, it will be threaded on the outer wall of the pipe or flow channel to be tested. Its extension section 23 will extend to the position to be tested, thereby realizing the temperature and pressure measurement at the position to be tested. The upper end of the connector 2 is connected to the protective tube assembly 5 by threads to protect the temperature measuring component 3 and the pressure measuring component 4.

[0100] Temperature measuring component 3 includes armored thermocouple 31 and sealing joint I 32; pressure measuring component 4 includes pressure sensor 41, sealing joint II 42 and pressure tapping tube 43; protective tube assembly 5 includes protective cover 51, nut 52 and protective tube 53.

[0101] During assembly, the pressure tapping tube 43 is welded to the corresponding hole on the connector body 21. Then, the pressure sensor 41 is connected to the pressure tapping tube 43 by using the sealing connector II 42. After connection, the sealing connector II 42 is tightened to achieve pressure transmission, fixation, and sealing among the three components. The sealing connector I 32 is installed on the connector body 21. The armored thermocouple 31 is passed through the sealing connector I 32, and its head contacts the position to be measured. The sealing connector I 32 is then tightened for fixation and sealing. The protective tube 53 is installed onto the connector body 21 by thread. While installing the protective cover 51 on the protective tube 53, the tail wires of the temperature measuring component 3 and the pressure measuring component 4 are led out through the opening on the protective cover 51. After the protective cover 51 is installed, the protective cover 51 and the protective tube 53 are fixed with the nut 52. Finally, the connector 2 is installed onto the component to be measured by thread using the copper washer 22.

[0102] In summary: The measuring device consists of a connector 2, a temperature measuring component 3, a pressure measuring component 4, and a protective tube assembly 5. Both the temperature measuring component 3 and the pressure measuring component 4 are mounted on the same connector 2. The connector 2 has an extension section 23, which can extend to the location to be measured within the pipe 1 or flow channel, thus enabling temperature and pressure measurements at different depths. The connector 2 is connected to the protective tube assembly 5 to protect the temperature measuring component 3 and the pressure measuring component 4. The connector 2 is connected to the pressure measuring component 4 via a pressure-sensing tube 43 within the pressure measuring component 4, thereby transmitting pressure at the location to be measured and thus achieving pressure measurement at that location. The connector 2 is connected to the temperature measuring component 3 via a sealing connector I 32 of the temperature measuring component 3. After inserting the armored thermocouple 31 into the location to be measured, tightening the sealing connector II 42 seals and fixes the armored thermocouple 31, thereby achieving temperature measurement at the location to be measured.

[0103] In summary, this invention aims to solve the problems of large measurement position deviations, poor sealing, easy damage to measuring elements, and low environmental adaptability in existing high-temperature and high-pressure flow channels. It proposes an integrated temperature and pressure measurement device. By synchronously acquiring temperature and pressure data at the same point, it ensures that the measurement position error is less than or equal to 20mm, improving measurement accuracy. Optimized joint structure and sealing component design enhance sealing performance under high-temperature and high-pressure environments, preventing unstable measurement signals. The introduction of an adjustable pressure tap and cooling module allows the pressure sensor to avoid high-temperature areas, improving the reliability and applicability of the measuring device. Simultaneously, the protective tube assembly structure effectively protects the temperature and pressure measuring elements, extending equipment lifespan. Threaded connections and modular design enable rapid installation and maintenance. This invention overcomes the shortcomings of existing measurement technologies, such as measurement point position deviations, poor sealing, easy sensor damage, and insufficient adaptability, and has significant application value in gas turbines and other high-temperature and high-pressure flow channel systems.

[0104] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A temperature and pressure measuring device for a high-temperature and high-pressure flow channel, characterized in that, include: A temperature measurement module and a pressure measurement module, wherein the fluid in the measurement area of ​​the temperature measurement module is connected to the inlet side of the pressure measurement module; The temperature measurement module and the pressure measurement module are integrated and set up to measure the temperature and pressure at the same location in the pipeline, and the distance between the inlet side and the temperature measurement module is less than or equal to 20mm; the pressure measurement module completes the pressure measurement by connecting the fluid in the pipeline (1), and the ambient temperature of the pressure measurement module and the temperature of the connected fluid are less than the temperature of the fluid in the pipeline (1).

2. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 1, characterized in that, The assembly includes a connector (2), which includes a connector body (21), a copper gasket (22), and an extension section (23). The upper end face of the connector body (21) is provided with two through holes for installing a temperature measuring component (3) and a pressure measuring component (4). The temperature measuring component (3) includes an armored thermocouple (31) and a sealing connector I (32). The armored thermocouple (31) passes through the sealing connector I (32) and is connected to the connector body (21), with its head contacting the position to be measured. The pressure measuring component (4) includes a pressure sensor (41), a sealing connector II (42), and a pressure tapping tube (43). The front end of the pressure tapping tube (43) is welded to the connector body (21), and the end is connected to the pressure sensor (41). The protective tube assembly (5) includes a protective tube (53), a protective cap (51), and a nut (52). The protective tube (53) is threadedly connected to the connector body (21) to protect the temperature measuring component (3) and the pressure measuring component (4).

3. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 2, characterized in that, The extension section (23) has an adjustable length and is used to complete measurements at different depths; the pressure measuring module is equipped with a cooling module.

4. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 2, characterized in that, The temperature measuring component (3) and the pressure measuring component (4) are both installed on the same connector (2), and the armored thermocouple (31) of the temperature measuring component (3) extends into the pipe to be tested (1), and the pressure measuring component (4) extends into the pipe to be tested (1) through the pressure tapping tube (43); the distance between the extension end of the armored thermocouple (31) and the inlet side of the extension end of the pressure tapping tube (43) is less than or equal to 20 mm.

5. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 2, characterized in that, The connector (2) is connected to the outer wall of the pipe (1) or flow channel to be tested by threads and sealed by a copper gasket (22).

6. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 3, characterized in that, The length of the pressure tap (43) is adjustable, so that the pressure sensor (41) is protected from the high temperature inside the flow channel.

7. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 2, characterized in that, The protective tube assembly (5) includes an inner part and an outer part. The inner part is threaded to the connector (2), and the outer part is fixed by a nut (52) to protect the temperature measuring component (3) and the pressure measuring component (4).

8. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 4, characterized in that, The sheathed thermocouple (31) is placed in contact with the position to be measured, and is fixed and sealed by tightening the sealing joint I (32).

9. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 6, characterized in that, The pressure sensor (41) is connected to the connector body (21) through the pressure tap (43) and the sealing connector II (42) to measure the pressure at the location to be measured.

10. The temperature and pressure measuring device for a high-temperature and high-pressure flow channel as described in claim 2, characterized in that, The protective cover (51) has an opening for the tail wires of the temperature measuring component (3) and the pressure measuring component (4) to pass through, and is fixed by a nut (52); the middle section of the connector (2) is a columnar metal piece with an external hexagon and threads at both ends, and the extension section (23) is used to extend to the position to be measured for sealing during temperature and pressure measurement.

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