Temperature sensor, blade deicing equipment and temperature measurement correction method

Abstract

The invention discloses a temperature sensor, blade deicing equipment and a temperature measurement correction method, the temperature sensor comprises a mounting block and a temperature measurement assembly, the mounting block is used for being mounted on a hot air pipe of the blade deicing equipment, the temperature measurement assembly comprises a temperature measurement rod and a temperature measurement thermocouple, the temperature measurement rod is arranged on the mounting block and used for extending into the hot air pipe, and the temperature measurement thermocouple is arranged on the mounting block. The temperature measuring rod comprises a first temperature measuring part and a second temperature measuring part which are arranged at an interval, a temperature measuring air channel is formed between the first temperature measuring part and the second temperature measuring part, and temperature measuring thermocouples are arranged on the sides, facing the temperature measuring air channel, of the first temperature measuring part and the second temperature measuring part respectively. The temperature measuring thermocouple can accurately detect the temperature of the heated gas when the heated gas flows through the temperature measuring air channel, and the first temperature measuring part and the second temperature measuring part can prevent the external temperature from being conducted into the temperature measuring air channel, thereby reducing the influence of the external temperature on the temperature of the heated gas in the temperature measuring air channel. The temperature measuring air channel can accurately detect the temperature of the heating air flowing through the temperature measuring air channel under the conditions of large air pressure, large air volume and non-directional air direction.

Description

Technical Field

[0001] The invention belongs to the technical field of deicing of fan blades, and in particular relates to a temperature sensor, a blade deicing device and a temperature measurement correction method. Background Art

[0002] Wind turbine blades often freeze in winter. The current method of de-icing blades is usually gas-heat de-icing, which means that heated gas is delivered to the inner cavity of the blade to melt the ice on the blade surface. In order to ensure that the temperature of the heated gas is within a controllable range, a temperature sensor is usually set to measure the temperature of the heated gas. However, the temperature measurement environment of the temperature sensor is relatively complex and is affected by many factors such as the heated gas temperature, flow rate, flow rate, and the ice temperature on the blade surface and the external environment temperature. As a result, it is difficult for existing temperature sensors to accurately detect the heated gas temperature, the temperature measurement accuracy is low, and the gas heating temperature cannot be accurately controlled. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a temperature sensor, a blade deicing device and a temperature measurement correction method, aiming to solve the technical problem that the existing temperature sensors are difficult to accurately detect the temperature of the heated gas during gas-heat deicing.

[0004] In order to achieve the above object, the present invention provides a temperature sensor for a blade deicing device, the temperature sensor comprising: A mounting block for mounting on a hot air duct of a blade de-icing device; The temperature measuring assembly includes a temperature measuring rod and a temperature measuring thermocouple. The temperature measuring rod is arranged on the mounting block and is used to extend into the hot air duct. The temperature measuring rod includes a first temperature measuring part and a second temperature measuring part arranged at intervals. A temperature measuring air duct is formed between the first temperature measuring part and the second temperature measuring part, and temperature measuring thermocouples are respectively arranged on one side of the first temperature measuring part and the second temperature measuring part facing the temperature measuring air duct.

[0005] In the embodiment of the present invention, streamlined air guiding surfaces are respectively formed on the side of the first temperature measuring portion and the second temperature measuring portion facing away from the temperature measuring air duct, and the streamlined air guiding surfaces are arranged in a streamlined shape along the air guiding direction.

[0006] In the embodiment of the present invention, two ends of the streamline wind guiding surface are respectively set as the near wind end and the far wind end, and the curvature radius of the near wind end is smaller than the curvature radius of the far wind end.

[0007] In an embodiment of the present invention, the two ends of the temperature measuring air duct are respectively set as the air inlet end and the air outlet end, a first air guide fillet is formed on the first temperature measuring part, and a second air guide fillet is formed on the second temperature measuring part, the first air guide fillet and the second air guide fillet are located at the air inlet end, and an air inlet opening is formed between the first air guide fillet and the second air guide fillet, and the size of the air inlet opening is larger than the size of the temperature measuring air duct.

[0008] In an embodiment of the present invention, the temperature sensor also includes a reinforcing rod, which is arranged in the temperature measuring air duct, and the two ends of the reinforcing rod are respectively connected to the first temperature measuring part and the second temperature measuring part. The number of reinforcing rods is set to multiple, and the multiple reinforcing rods are arranged at intervals along the length direction of the first temperature measuring part.

[0009] In an embodiment of the present invention, the temperature sensor further includes a limiting sleeve, which is detachably sleeved on the mounting block and is used to abut against the hot air pipe.

[0010] In order to achieve the above-mentioned objectives, the present invention also provides a blade deicing device, which includes a heating device and a temperature sensor for the blade deicing device as described above. The heating device includes a heater, a fan and a hot air pipe. The heater is used to be arranged at the root of the blade and has an air inlet and an air outlet. The fan is arranged at the air inlet and connected to the air inlet. One end of the hot air pipe is connected to the air outlet, and the other end of the hot air pipe is arranged toward the inner cavity of the blade. The temperature sensor is arranged on the hot air pipe near the air outlet.

[0011] In order to achieve the above object, the present invention further provides a temperature measurement correction method of a temperature sensor. The temperature measurement correction method of the temperature sensor is based on the temperature sensor for blade deicing equipment described above. The temperature measurement correction method of the temperature sensor includes: The mounting block is mounted on the detection air duct of the temperature measurement correction device so that the temperature measuring rod is extended into the detection air duct, and the temperature measurement air duct is set corresponding to the constant temperature air supply box of the temperature measurement correction device, wherein the constant temperature air supply box is connected with the detection air duct, the temperature in the constant temperature air supply box is adjustable, and an air supply mechanism is provided in the constant temperature air supply box; Controlling the gas supply mechanism to supply gas into the detection air duct at a preset gas flow rate; The temperature detection value of the temperature measuring thermocouple is corrected according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box.

[0012] In an embodiment of the present invention, the air supply mechanism includes a piston and a driving member, the piston is movably arranged in a constant temperature air supply box, the driving member is drivingly connected to the piston, and controlling the air supply mechanism to supply air to the detection air duct at a preset gas flow rate includes: Determining a preset speed of the piston according to a preset gas flow rate and an effective action area of ​​the piston; The driving member is controlled to drive the piston to move toward the detection air duct at a preset speed.

[0013] In an embodiment of the present invention, the temperature detection value of the temperature measuring thermocouple is corrected according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box, including: Determine the actual gas flow rate in the temperature measuring air duct according to the preset gas flow rate and the cross-sectional area of ​​the temperature measuring air duct; The temperature detection value is corrected according to the actual gas flow rate and the preset temperature.

[0014] Through the above technical solution, the temperature sensor, blade deicing equipment and temperature measurement correction method provided by the embodiments of the present invention have the following beneficial effects: In the technical solution of the present invention, the mounting block is used to be mounted on the hot air pipe so that the temperature measuring rod can extend into the hot air pipe, the hot air pipe is used for the heated gas to pass through, the temperature measuring rod includes a first temperature measuring part and a second temperature measuring part, the first temperature measuring part and the second temperature measuring part are arranged at intervals so that a temperature measuring channel for the heated gas to pass through is formed between the first temperature measuring part and the second temperature measuring part, the first temperature measuring part and the second temperature measuring part are both provided with temperature measuring thermocouples, and the temperature measuring thermocouples are located in the temperature measuring channel, so that the temperature measuring thermocouples can fully contact with the heated gas when the heated gas flows through the temperature measuring air duct to accurately detect the temperature of the heated gas, and the first temperature measuring part and the second temperature measuring part can block the ice coating temperature on the blade surface and the external External temperatures such as ambient temperature are transmitted to the temperature measuring air duct, which plays a role in insulating the temperature measuring air duct, reducing the influence of external temperature on the temperature of the heated gas in the temperature measuring air duct, so that the temperature measuring air duct can accurately detect the temperature of the heated gas flowing through the temperature measuring air duct under high wind pressure, high wind volume and non-directional wind direction, and the temperature measuring rod extends from the inner wall of the hot air duct to the middle of the hot air duct, so that the temperature measuring air duct can supply the heated gas in the middle of the hot air duct to pass, further reducing the influence of external temperature on the temperature measuring air duct. The temperature sensor has the advantage of high temperature measurement accuracy, which realizes the precise control of the gas heating temperature according to the temperature measurement results of the temperature sensor, and improves the reliability of blade deicing.

[0015] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. In the accompanying drawings: Figure 1 is a schematic diagram of the main structure of a temperature sensor according to an embodiment of the present invention; Figure 2 is a schematic side view of the structure of a temperature sensor according to an embodiment of the present invention; Figure 3 is a schematic diagram of a top view of the structure of a first temperature measuring part and a second temperature measuring part in a temperature sensor according to an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of a temperature measuring thermocouple in a temperature sensor according to an embodiment of the present invention; Figure 5is a schematic diagram of a partial structure of a blade deicing device according to an embodiment of the present invention; Figure 6 is a structural schematic diagram of a temperature measurement correction device in a temperature measurement correction method according to an embodiment of the present invention; Figure 7 4 is a flow chart of a temperature measurement correction method according to an embodiment of the present invention.

[0017] Description of Reference Numerals DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0019] A temperature sensor for a blade deicing device according to the present invention will be described below with reference to the accompanying drawings.

[0020] like Figures 1 to 5 As shown, the present invention provides a temperature sensor 100 for a blade deicing device, the temperature sensor 100 includes a mounting block 10 and a temperature measuring assembly, the mounting block 10 is used to be mounted on a hot air duct 200 of the blade deicing device, the temperature measuring assembly includes a temperature measuring rod 20 and a temperature measuring thermocouple 30, the temperature measuring rod 20 is arranged on the mounting block 10 and is used to extend into the hot air duct 200, the temperature measuring rod 20 includes a first temperature measuring portion 21 and a second temperature measuring portion 22 arranged at intervals, a temperature measuring air duct 23 is formed between the first temperature measuring portion 21 and the second temperature measuring portion 22, and the first temperature measuring portion 21 and the second temperature measuring portion 22 are respectively provided with temperature measuring thermocouples 30 on one side of the temperature measuring portion 21 and the second temperature measuring portion 22 facing the temperature measuring air duct 23.

[0021] Specifically, the mounting block 10 is used to be installed on the hot air pipe 200 so that the temperature measuring rod 20 can extend into the hot air pipe 200. The hot air pipe 200 is used for the heated gas to pass through. The temperature measuring rod 20 includes a first temperature measuring portion 21 and a second temperature measuring portion 22. The first temperature measuring portion 21 and the second temperature measuring portion 22 are arranged at intervals so that a temperature measuring channel for the heated gas to pass through is formed between the first temperature measuring portion 21 and the second temperature measuring portion 22. The first temperature measuring portion 21 and the second temperature measuring portion 22 are both provided with a temperature measuring thermocouple 30, and the temperature measuring thermocouple 30 is located in the temperature measuring channel, so that the temperature measuring thermocouple 30 can fully contact the heated gas when the heated gas flows through the temperature measuring air duct 23 to accurately detect the temperature of the heated gas. The first temperature measuring portion 21 and the second temperature measuring portion 22 can block the ice coating temperature on the blade surface. The external temperature such as the external ambient temperature is conducted to the temperature measuring air duct 23, which plays the role of heat-insulating the temperature measuring air duct 23, reducing the influence of the external temperature on the temperature of the heated gas in the temperature measuring air duct 23, so that the temperature measuring air duct 23 can accurately detect the temperature of the heated gas flowing through the temperature measuring air duct 23 under high wind pressure, high wind volume and non-directional wind direction, and the temperature measuring rod 20 extends from the inner wall of the hot air duct 200 to the middle part of the hot air duct 200, so that the temperature measuring air duct 23 can supply the heated gas in the middle part of the hot air duct 200 to pass, further reducing the influence of the external temperature on the temperature measuring air duct 23, and the temperature sensor 100 has the advantage of high temperature measurement accuracy, which realizes the precise control of the gas heating temperature according to the temperature measurement result of the temperature sensor 100, and improves the reliability of blade deicing.

[0022] In the embodiment of the present invention, the first temperature measuring portion 21 and the second temperature measuring portion 22 are respectively formed with streamlined air guide surfaces 24 on the side facing away from the temperature measuring air duct 23, and the streamlined air guide surfaces 24 are arranged in a streamlined shape along the air guide direction. Figure 3 As shown, streamlined air guiding surfaces 24 are formed on the first temperature measuring portion 21 and the second temperature measuring portion 22, and the streamlined air guiding surfaces 24 are arranged to face away from the temperature measuring air duct 23. The streamlined air guiding surfaces 24 play a role in guiding the heated gas, and the streamlined air guiding surfaces 24 are arranged in a streamlined shape along the flow direction of the heated gas, thereby reducing the wind pressure acting on the first temperature measuring portion 21 and the second temperature measuring portion 22 when the heated gas flows through the hot air duct 200, and the streamlined streamlined air guiding surfaces 24 can disperse the force of the heated gas in the tangent direction of the streamlined air guiding surfaces 24, thereby further reducing the force of the heated gas acting on the first temperature measuring portion 21 and the second temperature measuring portion 22, thereby improving the structural strength of the temperature measuring rod 20, and effectively preventing the temperature measuring rod 20 from bending and deforming, so that the temperature measuring thermocouple 30 can accurately detect the temperature of the heated gas flowing through the temperature measuring air duct 23 under high wind pressure and high air volume, thereby improving the temperature measurement accuracy and extending the service life.

[0023] Furthermore, the two ends of the streamline wind guide surface 24 are respectively set as a near wind end 241 and a far wind end 242, and the curvature radius of the near wind end 241 is smaller than the curvature radius of the far wind end 242. Figure 3As shown, the air guiding direction of the streamline air guiding surface 24 is consistent with the length direction of the hot air duct 200, so that the heated gas can flow along the streamline air guiding surface 24 from the near wind end 241 to the far wind end 242. The curvature radius of the streamline air guiding surface 24 at the near wind end 241 is smaller than the curvature radius of the streamline air guiding surface 24 at the far wind end 242, which further reduces the wind pressure on the first temperature measuring part 21 and the second temperature measuring part 22 in the hot air duct 200, effectively improves the structural strength and prevents the temperature measuring rod 20 from bending and deformation.

[0024] In an embodiment of the present invention, the two ends of the temperature measuring air duct 23 are respectively set as an air inlet end 231 and an air outlet end 232, a first air guide fillet 211 is formed on the first temperature measuring part 21, and a second air guide fillet 221 is formed on the second temperature measuring part 22, the first air guide fillet 211 and the second air guide fillet 221 are located at the air inlet end 231, and an air inlet opening 25 is formed between the first air guide fillet 211 and the second air guide fillet 221, and the size of the air inlet opening 25 is larger than the size of the temperature measuring air duct 23.

[0025] like Figure 3 As shown, the temperature measuring air duct 23 is used for allowing the heated gas to pass through so that the temperature measuring thermocouple 30 in the temperature measuring air duct 23 measures the temperature of the heated gas. The air inlet end 231 of the temperature measuring air duct 23 is used for allowing the heated gas to enter the temperature measuring air duct 23, and the far air end 242 of the temperature measuring air duct 23 is used for allowing the heated gas to flow out of the temperature measuring air duct 23. The first temperature measuring portion 21 is located at the air inlet end 231 and is formed with a first air guide fillet 211. The second temperature measuring portion 22 is located at the far air end 242 and is formed with a second air guide fillet 212. The wind fillet 221, the first wind guiding fillet 211 and the second wind guiding fillet 221 serve to further reduce wind resistance, thereby improving the pressure-bearing strength of the first temperature measuring part 21 and the second temperature measuring part 22. An air inlet opening 25 is formed between the first wind guiding fillet 211 and the second wind guiding fillet 221. The air inlet opening 25 is connected to the air inlet end 231 to gather the heated gas, thereby ensuring that the air intake in the temperature measuring air duct 23 is sufficient to meet the temperature measurement requirements of the temperature measuring thermocouple 30, thereby further improving the detection accuracy.

[0026] In the embodiment of the present invention, the temperature measuring thermocouple 30 can be a thin film thermocouple in the prior art, such as Figure 2 and Figure 4 As shown, the number of the temperature measuring thermocouples 30 is set to two, and the two temperature measuring thermocouples 30 are respectively attached to the first temperature measuring part 21 and the second temperature measuring part 22, and the two temperature measuring thermocouples 30 are arranged in parallel. The temperature measuring thermocouples 30 are set to be thin film thermocouples to increase the contact area with the heating gas, thereby improving the detection sensitivity, and the temperature measuring air duct 23 plays a role in reducing the flow rate of the heating gas, thereby increasing the stability of the heating gas, so that the temperature measuring thermocouples 30 can fully contact the heating gas, further improving the temperature measurement accuracy.

[0027] In the embodiment of the present invention, the temperature sensor 100 further includes a reinforcing rod 40, which is disposed in the temperature measuring air duct 23, and the two ends of the reinforcing rod 40 are respectively connected to the first temperature measuring portion 21 and the second temperature measuring portion 22, and the number of the reinforcing rods 40 is set to be multiple, and the multiple reinforcing rods 40 are spaced apart along the length direction of the first temperature measuring portion 21. Figure 1 As shown, a plurality of reinforcing rods 40 are vertically spaced apart in the temperature measuring air duct 23, and the two ends of each reinforcing rod 40 are respectively connected to the first temperature measuring part 21 and the second temperature measuring part 22, thereby strengthening the connection strength between the first temperature measuring part 21 and the second temperature measuring part 22, improving the tensile strength of the temperature measuring rod 20, and effectively preventing the temperature measuring rod 20 from bending and deforming under high wind pressure and high wind volume, thereby extending the service life of the temperature sensor 100.

[0028] In the embodiment of the present invention, the temperature sensor 100 further includes a limiting sleeve 50, which is detachably mounted on the mounting block 10 and is used to abut against the hot air pipe 200. Figure 1 , Figure 2 and Figure 5 As shown, the limiting sleeve 50 is connected to the mounting block 10 and can abut against the outer wall of the hot air duct 200 to play the role of positioning and installing the temperature measuring rod 20, and the limiting sleeve 50 and the mounting block 10 are detachably connected to improve the convenience of disassembly and assembly, and the temperature measuring rod 20 extends from the inner wall of the hot air duct 200 toward the middle of the hot air duct 200, so that the temperature measuring thermocouple 30 can collect and detect the heating gas temperature in the middle of the hot air duct 200, further reducing the influence of the external temperature on the heating gas temperature and improving the detection accuracy. In addition, the limiting sleeve 50 can adopt the nut in the prior art, and the limiting sleeve 50 is threadedly connected to the mounting block 10, which is convenient and quick to disassemble and assemble, and is convenient for the maintenance and replacement of the temperature sensor 100.

[0029] In addition, the present invention also provides a blade deicing device, which includes a heating device and a temperature sensor 100 for the blade deicing device as described above. The heating device includes a heater 300, a fan and a hot air pipe 200. The heater 300 is used to be arranged at the root of the blade and has an air inlet and an air outlet 301. The fan is arranged at the air inlet and connected to the air inlet. One end of the hot air pipe 200 is connected to the air outlet 301, and the other end of the hot air pipe 200 is arranged toward the inner cavity of the blade. The temperature sensor 100 is arranged on the hot air pipe 200 near the air outlet 301, and the specific structure of the temperature sensor 100 refers to the above-mentioned embodiment. Since the heating device and the blade deicing device adopt all the technical solutions of the above-mentioned embodiments, they at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0030] like Figure 5As shown, the heating device is used to be installed in the fan blade to heat the blade, thereby removing ice on the blade surface. Specifically, the fan is connected to the air inlet of the heater 300 to provide airflow into the heater 300. The heater 300 is used to heat the airflow blown into the heater 300 by the fan to form heated gas, so that the heated gas can be blown out at the air outlet 301 of the heater 300. The heated gas flows through the hot air pipe 200 and is transported to the inner cavity of the blade to melt the ice on the blade surface. The temperature sensor 100 is arranged on the hot air pipe 200, and the temperature measuring rod 20 is arranged close to the air outlet 301 to accurately detect the heated gas. The temperature of the heated gas can be accurately controlled according to the actual de-icing requirements. In addition, in order to ensure the flow rate of the heated gas, the air outlet 301 of the heater 300 is tapered to gather the heated gas, resulting in an increase in the wind pressure at the air outlet 301 to form complex airflow conditions such as local turbulence. The temperature measuring air duct 23 of the temperature sensor 100 can effectively gather the heated gas and block the influence of the external temperature on the temperature in the temperature measuring air duct 23, which greatly improves the temperature measurement accuracy of the temperature sensor 100, realizes accurate control of the gas heating temperature according to the temperature measurement result of the temperature sensor 100, and improves the reliability of blade de-icing.

[0031] In addition, if Figure 7 As shown, the present invention also provides a temperature measurement correction method of the temperature sensor 100. The temperature measurement correction method of the temperature sensor 100 is based on the temperature sensor 100 for the blade deicing device described above. The temperature measurement correction method of the temperature sensor 100 includes: Step S10, installing the mounting block 10 on the detection air duct 401 of the temperature measurement correction device 400, so that the temperature measuring rod 20 extends into the detection air duct 401, and the temperature measuring air duct 23 is set corresponding to the constant temperature air supply box 402 of the temperature measurement correction device 400, wherein the constant temperature air supply box 402 is connected to the detection air duct 401, the temperature in the constant temperature air supply box 402 is adjustable, and an air supply mechanism is provided in the constant temperature air supply box 402; Specifically, the temperature measurement correction device 400 includes a constant temperature air supply box 402 and a detection air duct 401. The detection air duct 401 is connected to the constant temperature air supply box 402. The air supply mechanism in the constant temperature air supply box 402 can deliver gas to the detection air duct 401, and the temperature in the constant temperature air supply box 402 can be adjusted so that the constant temperature air supply box 402 can provide constant temperature gas to the detection air duct. The mounting block 10 is installed on the detection air duct 401 so that the temperature measuring rod 20 extends into the detection air duct 401, and the air guiding direction of the streamline air guiding surface 24 is adjusted to be consistent with the length direction of the detection air duct 401, so that the air inlet end 231 of the temperature measuring air duct 23 is set corresponding to the constant temperature air supply box 402.

[0032] Step S20, controlling the gas supply mechanism to supply gas into the detection air duct 401 at a preset gas flow rate; Specifically, when the temperature sensor 100 is installed on the detection air duct 401, the temperature in the constant temperature air supply box 402 is adjusted to a preset temperature, and the air supply mechanism is controlled to supply air to the detection air duct 401 at a preset gas flow rate, so that the constant temperature gas is transported from the constant temperature air supply box 402 to the detection air duct 401; Step S30, correcting the temperature detection value of the temperature measuring thermocouple 30 according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box 402; Specifically, the preset temperature is compared with the temperature detection value of the temperature measuring thermocouple 30, and the temperature detection value of the temperature measuring thermocouple 30 is calibrated and corrected according to the preset temperature. The preset gas flow rate is adjusted during multiple temperature measurements to achieve correction of the temperature detection value of the temperature sensor 100 under different preset gas flow rates. This reduces the error between the temperature detection value detected by the temperature measuring thermocouple 30 at different gas flow rates and the actual temperature of the heating gas, thereby enabling the temperature detection value of the temperature sensor 100 to accurately reflect the heating efficiency of the heater 300 and the operating condition of the fan, thereby improving the reliability of de-icing.

[0033] Furthermore, if Figure 6 As shown, the gas supply mechanism includes a piston 403 and a driving member, the piston 403 is movably arranged in the constant temperature gas supply box 402, the driving member is drivingly connected to the piston 403, and step S20, controlling the gas supply mechanism to supply gas to the detection air duct 401 at a preset gas flow rate includes: Step S21, determining a preset speed of the piston 403 according to a preset gas flow rate and an effective action area of ​​the piston 403; Specifically, the preset gas flow rate is equal to the product of the effective action area of ​​the piston 403 and the preset speed of the piston 403 , and thus the preset gas flow rate can be precisely controlled by adjusting the preset speed of the piston 403 .

[0034] Step S22, controlling the driving member to drive the piston 403 to move toward the detection air duct 401 at a preset speed; Specifically, the control piston 403 provides constant temperature gas to the detection air duct 401 at a preset speed, and then can calibrate and correct the temperature detection value according to the preset gas flow and preset temperature, so that the temperature sensor 100 can accurately detect the temperature of the heated gas flowing through the temperature measurement air duct 23 under high wind pressure, high wind volume and non-directional wind direction, thereby improving the detection accuracy.

[0035] In the embodiment of the present invention, step S30, correcting the temperature detection value of the temperature measuring thermocouple 30 according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box 402 includes: Step S31, determining the actual gas flow rate in the temperature measuring air duct 23 according to the preset gas flow rate and the cross-sectional area of ​​the temperature measuring air duct 23; Specifically, the preset gas flow rate is equal to the product of the cross-sectional area of ​​the temperature measuring air duct 23 and the actual gas flow rate, and the actual gas flow rate in the temperature measuring air duct 23 can be determined according to the preset speed of the piston 403 and the effective action area, and the actual gas flow rate in the temperature measuring air duct 23 can be accurately controlled by adjusting the preset speed of the piston 403; Step S32, correcting the temperature detection value according to the actual gas flow rate and the preset temperature; Specifically, the control piston 403 provides constant temperature gas to the detection air duct 401 at a preset speed, obtains the temperature detection value of the temperature measuring thermocouple 30, compares the temperature detection value with the preset temperature, and calibrates and corrects the temperature detection value of the temperature measuring thermocouple 30 according to the preset temperature. By adjusting the actual gas flow rate during multiple temperature measurements to achieve calibration and correction of the temperature detection value at different reagent gas flow rates, the temperature measurement error of the temperature measuring thermocouple 30 at different gas flow rates is reduced, and the detection accuracy is greatly improved.

[0036] In the embodiment of the present invention, Figure 6 As shown, the temperature measurement correction device 400 also includes a sealing box 404, which is used to be connected to the end of the detection air duct 401 away from the constant temperature air supply box 402 to prevent external gas from entering the detection air duct 401 and affecting the temperature measurement accuracy. In addition, a switch valve is provided between the detection air duct 401 and the sealing box 404. By adjusting the opening of the switch valve so that the constant temperature gas circulates between the detection air duct 401 and the sealing box 404, the effect of simulating the inner cavity environment of the blade is played, thereby further improving the accuracy of the temperature measurement correction.

[0037] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A temperature sensor for blade deicing equipment, characterized in that: The temperature sensor (100) comprises: A mounting block (10) used for mounting on a hot air pipe (200) of a blade deicing device; A temperature measuring assembly comprises a temperature measuring rod (20) and a temperature measuring thermocouple (30), wherein the temperature measuring rod (20) is arranged on the mounting block (10) and is used to extend into the hot air duct (200), wherein the temperature measuring rod (20) comprises a first temperature measuring portion (21) and a second temperature measuring portion (22) which are arranged at intervals, wherein a temperature measuring air duct (23) is formed between the first temperature measuring portion (21) and the second temperature measuring portion (22), and the temperature measuring thermocouple (30) is respectively arranged on one side of the first temperature measuring portion (21) and the second temperature measuring portion (22) facing the temperature measuring air duct (23).

2. The temperature sensor for blade deicing equipment according to claim 1, characterized in that: A streamlined air guiding surface (24) is formed on the side of the first temperature measuring portion (21) and the second temperature measuring portion (22) facing away from the temperature measuring air duct (23), respectively, and the streamlined air guiding surface (24) is arranged in a streamlined shape along the air guiding direction.

3. The temperature sensor for blade deicing equipment according to claim 2, characterized in that: The two ends of the streamline wind-guiding surface (24) are respectively configured as a near-wind end (241) and a far-wind end (242), and the curvature radius of the near-wind end (241) is smaller than the curvature radius of the far-wind end (242).

4. The temperature sensor for blade deicing equipment according to claim 1, characterized in that: The two ends of the temperature measuring air duct (23) are respectively arranged as an air inlet end (231) and an air outlet end (232); a first air guide fillet (211) is formed on the first temperature measuring portion (21); a second air guide fillet (221) is formed on the second temperature measuring portion (22); the first air guide fillet (211) and the second air guide fillet (221) are arranged at the air inlet end (231); an air inlet opening (25) is formed between the first air guide fillet (211) and the second air guide fillet (221); and the size of the air inlet opening (25) is larger than the size of the temperature measuring air duct (23).

5. The temperature sensor for blade deicing equipment according to claim 1, characterized in that: The temperature sensor (100) further comprises a reinforcing rod (40), wherein the reinforcing rod (40) is arranged in the temperature measuring air duct (23), and the two ends of the reinforcing rod (40) are respectively connected to the first temperature measuring part (21) and the second temperature measuring part (22), and the number of the reinforcing rods (40) is set to be multiple, and the multiple reinforcing rods (40) are arranged at intervals along the length direction of the first temperature measuring part (21).

6. The temperature sensor for blade deicing equipment according to claim 1, characterized in that: The temperature sensor (100) further comprises a limiting sleeve (50), wherein the limiting sleeve (50) is detachably sleeved on the mounting block (10) and is used to abut against the hot air pipe (200).

7. A blade deicing device, characterized in that: The blade deicing device comprises a heating device and a temperature sensor (100) for the blade deicing device according to any one of claims 1 to 6, the heating device comprising a heater (300), a fan and a hot air pipe (200), the heater (300) being arranged at the root of the blade and having an air inlet and an air outlet (301), the fan being arranged at the air inlet and communicating with the air inlet, one end of the hot air pipe (200) being communicated with the air outlet (301), and the other end of the hot air pipe (200) being arranged toward the inner cavity of the blade, and the temperature sensor (100) being arranged on the hot air pipe (200) at a position close to the air outlet (301).

8. A temperature measurement correction method for a temperature sensor, characterized in that: The temperature measurement correction method of the temperature sensor (100) is based on the temperature sensor (100) for blade deicing equipment according to any one of claims 1 to 6, and the temperature measurement correction method of the temperature sensor (100) comprises: The mounting block (10) is mounted on the detection air duct (401) of the temperature measurement correction device (400) so that the temperature measurement rod (20) extends into the detection air duct (401), and the temperature measurement air duct (23) is arranged corresponding to the constant temperature air supply box (402) of the temperature measurement correction device (400), wherein the constant temperature air supply box (402) is connected to the detection air duct (401), the temperature in the constant temperature air supply box (402) is adjustable, and an air supply mechanism is arranged in the constant temperature air supply box (402); Controlling the gas supply mechanism to supply gas into the detection air duct (401) at a preset gas flow rate; The temperature detection value of the temperature measuring thermocouple (30) is corrected according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box (402).

9. The temperature measurement correction method of a temperature sensor according to claim 8, characterized in that: The gas supply mechanism comprises a piston (403) and a driving member, the piston (403) is movably arranged in the constant temperature gas supply box (402), the driving member is drivingly connected to the piston (403), and the controlling of the gas supply mechanism to supply gas into the detection air duct (401) at a preset gas flow rate comprises: Determining a preset speed of the piston (403) according to the preset gas flow rate and the effective action area of ​​the piston (403); The driving member is controlled to drive the piston (403) to move toward the detection air duct (401) at the preset speed.

10. The temperature measurement correction method of a temperature sensor according to claim 8, characterized in that: The step of correcting the temperature detection value of the temperature measuring thermocouple (30) according to the preset gas flow rate and the preset temperature in the constant temperature gas supply box (402) comprises: Determining an actual gas flow rate in the temperature measuring air duct (23) according to the preset gas flow rate and the cross-sectional area of ​​the temperature measuring air duct (23); The temperature detection value is corrected according to the actual gas flow rate and the preset temperature.

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