A furnace flue gas temperature measuring device and method

Abstract

The present invention belongs to the technical field of thermal power generation, and specifically, relates to a furnace flue gas temperature measuring device. The furnace flue gas temperature measuring device includes a temperature measuring system and a data processing system. The temperature measuring system includes a temperature measuring ball and a transmitting device. The transmitting device transmits the temperature measuring ball into the furnace for movement. The temperature measuring ball sends its own movement signal and the real-time measured flue gas temperature signal of each point in the furnace to the data processing system, and the data processing system obtains the furnace flue gas temperature distribution information after processing. The furnace flue gas temperature measuring device of the present invention can accurately and effectively detect the internal flue gas temperature of a large-sized furnace, and is not limited by the high temperature in the furnace. The present invention also relates to a furnace flue gas temperature measurement method.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a furnace flue gas temperature measuring device and method. Background Art

[0002] The furnace temperature is an important parameter in the combustion process of the reaction boiler. To ensure the good operation of the power plant boiler, the combustion flame distribution in the furnace must be reasonable and stable. Problems such as boiler efficiency, furnace coking, furnace tube explosion and NOx generation are all related to the temperature field in the furnace. Therefore, accurate measurement of the temperature field in the furnace is of great significance for diagnosing the operation of the boiler.

[0003] At present, the furnace temperature of power plant boilers is mainly measured by flue gas temperature probes and infrared thermometers. Among them, the flue gas temperature probe is mainly used to measure the furnace temperature when the boiler is started, and can only measure the flue gas temperature below 700℃. When the temperature exceeds this limit, the flue gas temperature probe must be retracted. Infrared thermometers cannot effectively measure the flame temperature distribution inside large-sized furnaces, and the error is large.

[0004] The existing technology cannot reflect the real flue gas temperature in the furnace in real time. Therefore, it is necessary to develop a measuring device that can effectively reflect the temperature distribution of the high-temperature flue gas inside the furnace.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a furnace flue gas temperature measuring device and method.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A furnace flue gas temperature measuring device includes a temperature measuring system and a data processing system. The temperature measuring system includes a temperature measuring ball and a transmitting device. The transmitting device transmits the temperature measuring ball into the furnace for movement. The temperature measuring ball sends its own movement signal and the real-time measured flue gas temperature signal of each point in the furnace to the data processing system. After processing by the data processing system, the furnace flue gas temperature distribution information is obtained.

[0009] As an embodiment of the present invention, a thermocouple, a signal processor, an acceleration sensor, a wireless signal transmitter and an electromagnetic signal receiver are arranged in the temperature measuring bulb;

[0010] The electromagnetic signal receiver receives the working signal sent by the transmitter to control the temperature measuring ball to start working. The thermocouple measures the flue gas temperature in the furnace, and the acceleration sensor detects the acceleration of the temperature measuring ball and transmits the temperature signal and acceleration signal to the signal processor for processing, and then transmits them to the data processing system through the wireless signal transmitter.

[0011] As an embodiment of the present invention, the data processing system includes a speed sensor, a wireless signal receiver, an analog / digital converter and a data processing computer. The speed sensor measures the initial velocity of the temperature measuring ball entering the furnace. The wireless signal receiver receives the temperature signal and acceleration signal processed by the signal processor, converts them into digital signals through the analog / digital converter and transmits them to the data processing computer.

[0012] As an implementation mode of the present invention, a signal processor, an acceleration sensor, a wireless signal transmitter and an electromagnetic signal receiver are integrated into the same chip.

[0013] As an embodiment of the present invention, the temperature measuring point of the thermocouple is arranged on the surface of the temperature measuring ball.

[0014] Preferably, the temperature measuring points are evenly arranged into multiple groups of temperature measuring circles along different ball diameter directions of the temperature measuring ball.

[0015] The surface of the temperature measuring ball is provided with a high-temperature heat-insulating wrapping material, and preferably, the wrapping material is a ceramic fiber heat-insulating material.

[0016] As an embodiment of the present invention, the launching device includes an air pump, a stop valve, a launching gun barrel and a trigger coil. The air pump generates high-pressure air to push the temperature measuring ball into the furnace through the launching gun barrel. The trigger coil sends a working signal to the temperature measuring ball. The stop valve is arranged between the air pump outlet and the launching gun barrel to control the launching of the temperature measuring ball.

[0017] As an implementation mode of the present invention, an infrared measuring point is provided on the launch gun barrel, and the speed sensor measures the initial speed of the temperature measuring ball entering the furnace through the infrared measuring point.

[0018] As an implementation mode of the present invention, a battery is arranged in the temperature measuring ball, the electromagnetic signal receiver receives the working signal sent by the trigger coil, and the temperature measuring ball is powered by the battery and starts to work.

[0019] The present invention also provides a furnace flue gas temperature measurement method using any one of the furnace flue gas temperature measurement devices mentioned above.

[0020] As an embodiment of the present invention, a furnace flue gas temperature measurement method comprises the following steps:

[0021] S1, measure the initial velocity of the temperature measuring ball entering the furnace and the acceleration of its movement in the furnace, let the temperature measuring ball move in the furnace for a certain period of time and measure the flue gas temperature at each point in real time;

[0022] S2, based on the obtained initial velocity and acceleration information of the temperature measuring ball, integrally calculate the motion trajectory of the temperature measuring ball in the furnace within a certain period of time, combine the motion trajectory within a certain period of time with the flue gas temperature information of each point inside the furnace, and obtain the flue gas temperature distribution information in the furnace. Further, the following steps are included:

[0023] S3, changing the direction of the initial velocity of the temperature measuring ball entering the furnace and / or the movement time in the furnace, repeating steps S1 and S2, and obtaining an information base of the flue gas temperature distribution in the furnace.

[0024] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0025] The furnace flue gas temperature measuring device of the present invention can accurately and effectively detect the internal flue gas temperature of a large-sized furnace, has a wide range of applications, is not limited by the high temperature in the boiler, and can be applied to the temperature measurement of flue gas with a temperature of up to 1400°C. The furnace flue gas temperature measuring device of the present invention has a simple structure, a small measurement error, can measure the temperature of multiple points inside the furnace in real time, and can more truly reflect the flame temperature in the furnace.

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0028] Figure 1 is a schematic diagram of the furnace flue gas temperature measuring device of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the temperature measuring ball of the present invention;

[0030] Figure 3 It is a flow chart of the furnace flue gas temperature measurement method of the present invention.

[0031] Markings in the figure: 101-air pump, 102-stop valve, 103-launching gun barrel, 104-temperature measuring bulb, 105-trigger coil, 201-data processing computer, 202-analog / digital converter, 203-wireless signal receiver, 204-speed sensor, 205-infrared measuring point, 401-thermocouple, 402-signal processor, 403-acceleration sensor, 404-wireless signal transmitter, 405-electromagnetic signal receiver, 406-battery, 407-wrapping material. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] A furnace flue gas temperature measuring device, such as Figure 1 As shown, it includes a temperature measuring system 1 and a data processing system 2. The temperature measuring system 1 includes a temperature measuring ball 104 and a transmitting device. The transmitting device transmits the temperature measuring ball 104 into the furnace for movement. The temperature measuring ball 104 sends its own movement signal and the real-time measured flue gas temperature signal of each point in the furnace to the data processing system 2. After processing, the data processing system 2 obtains the furnace flue gas temperature distribution information.

[0037] like Figure 2 As shown, the temperature measuring bulb 104 is provided with a thermocouple 401 , a signal processor 402 , an acceleration sensor 403 , a wireless signal transmitter 404 and an electromagnetic signal receiver 405 .

[0038] The electromagnetic signal receiver 405 receives the working signal sent by the transmitting device to control the temperature measuring ball 104 to start working. The thermocouple 401 measures the flue gas temperature in the furnace, and the acceleration sensor 403 detects the acceleration of the temperature measuring ball 104 and transmits the temperature signal and the acceleration signal to the signal processor 402 for processing, and transmits them to the data processing system 2 through the wireless signal transmitter 404.

[0039] The data processing system 2 includes a speed sensor 204 , a wireless signal receiver 203 , an analog / digital converter 202 and a data processing computer 201 .

[0040] The speed sensor 204 measures the initial speed of the temperature measuring ball 104 entering the furnace, and the wireless signal receiver 203 receives the temperature signal and acceleration signal processed by the signal processor 402, converts them into digital signals through the analog / digital converter 202 and transmits them to the data processing computer 201.

[0041] The signal processor 402 , the acceleration sensor 403 , the wireless signal transmitter 404 and the electromagnetic signal receiver 405 are integrated into the same chip.

[0042] The temperature measurement point of the thermocouple 401 is arranged on the surface of the temperature measuring ball 104 .

[0043] Preferably, the temperature measuring points are evenly arranged into multiple groups of temperature measuring circles along different ball diameter directions of the temperature measuring ball 104 .

[0044] The surface of the temperature measuring ball 104 is provided with a high temperature heat insulating wrapping material 407 . Preferably, the wrapping material 407 is a ceramic fiber heat insulating material.

[0045] The thermocouple 401 of the present invention is made of high temperature resistant material and can work at a high temperature of up to 1400° C. for a certain period of time.

[0046] The high temperature insulation wrapping material 407 protects the components inside the temperature measuring ball 104, so that it can work normally for a certain period of time in the furnace. The ceramic fiber insulation material has high temperature resistance and insulation properties, which can make the temperature measuring ball 104 work at a high temperature of 1400° C. for a certain period of time.

[0047] like Figure 1 As shown, the launching device includes an air pump 101, a stop valve 102, a launching gun barrel 103 and a trigger coil 105. The air pump 101 generates high-pressure air to push the temperature measuring ball 104 to be shot into the furnace through the launching gun barrel 103. The trigger coil 105 sends a working signal to the temperature measuring ball 104. The stop valve 102 is arranged between the outlet of the air pump 101 and the launching gun barrel 103 to control the launching of the temperature measuring ball 104.

[0048] If the temperature measuring ball 104 is launched by mistake, the launch can be urgently forced to be stopped by the stop valve 102.

[0049] An infrared measuring point 205 is provided on the launch gun barrel 103 , and the speed sensor 204 measures the initial speed of the temperature measuring ball 104 entering the furnace through the infrared measuring point 205 .

[0050] A battery 406 is provided in the temperature measuring ball 104 , and the electromagnetic signal receiver 405 receives the working signal sent by the trigger coil 105 , and the temperature measuring ball 104 is powered by the battery 406 and starts to work.

[0051] The following specifically describes a working process of the furnace flue gas temperature measuring device of the present invention:

[0052] When the stop valve 102 is opened, the high-pressure air generated by the air pump 101 pushes the temperature measuring ball 104 to move at a certain initial speed, and is shot into the furnace through the fire-viewing hole by the launching gun barrel 103. Before the temperature measuring ball 104 enters the furnace, the speed sensor 204 calculates the initial velocity of the temperature measuring ball 104 through the infrared measuring point 205 arranged on the launching gun barrel 103. An electromagnetic signal receiver 405 capable of receiving external electromagnetic signals is arranged inside the temperature measuring ball 104. When it receives the electromagnetic signal emitted by the trigger coil 105, the battery 406 starts to power the temperature measuring ball 104, allowing the temperature measuring ball 104 to enter the furnace and start working. The flue gas temperature signal measured by the high temperature resistant thermocouple 401 and the motion acceleration signal of the temperature measuring ball 104 measured by the acceleration sensor 403 are transmitted to the signal processor 402. The wireless signal transmitter 404 transmits the flue gas temperature signal and the acceleration signal to the wireless signal receiver 203 outside the furnace. The initial velocity and acceleration signal of the temperature measuring ball 104 and the measured temperature signal are converted into digital signals by the analog / digital converter 202 and then sent to the data processing computer 201 through the RS-232 data port.

[0053] The present invention also provides a furnace flue gas temperature measurement method using the furnace flue gas temperature measurement device described above.

[0054] As a specific implementation, the furnace flue gas temperature measurement method comprises the following steps:

[0055] S1, measuring the initial velocity of the temperature measuring ball 104 entering the furnace and the acceleration of the temperature measuring ball 104 moving in the furnace, allowing the temperature measuring ball 104 to move in the furnace for a certain period of time and measuring the flue gas temperature at each moving position;

[0056] S2, based on the obtained initial velocity and acceleration information of the temperature measuring ball 104, the movement trajectory of the temperature measuring ball 104 in the furnace within a certain period of time is integrated and calculated, and the movement trajectory within a certain period of time is combined with the flue gas temperature information inside the furnace to obtain the flue gas temperature distribution information in the furnace.

[0057] The following is an explanation of a specific application case of the furnace flue gas temperature measurement method of the present invention.

[0058] The furnace flue gas temperature measurement device used in this case is shown in Figure 1 The furnace of the boiler to be measured is set vertically, the launch gun barrel 103 is set horizontally relative to the furnace and connected to the furnace through the fire-viewing hole, and the temperature measuring ball 104 is placed in the horizontal launch gun barrel 103. The outlet of the air pump 101 is connected to the launch gun barrel 103 through a horizontal pipeline and a stop valve 102 in sequence. The high-pressure air generated by the air pump 101 is ejected horizontally, so that the temperature measuring ball 104 obtains an initial velocity in the horizontal direction and enters the furnace. Before the temperature measuring ball 104 is about to enter the furnace, the speed sensor 204 measures the initial velocity of the temperature measuring ball 104 through the infrared measuring point 205 arranged on the launch gun barrel 103.

[0059] After the temperature measuring ball 104 enters the furnace, it is subjected to the gravity and airflow forces in the vertical direction, and has acceleration in the vertical direction. The temperature measuring ball 104 moves in a parabolic motion in the furnace. The acceleration sensor 403 measures the movement acceleration of the temperature measuring ball 104 and transmits it to the signal processor 402. The temperature measuring ball 104 moves in the furnace for a certain period of time, and the high temperature resistant thermocouple 401 measures the flue gas temperature signals of multiple spatial locations corresponding to multiple time points in real time and transmits them to the signal processor 402.

[0060] The wireless signal transmitter 404 transmits the flue gas temperature signal and the acceleration signal to the wireless signal receiver 203 outside the furnace. The initial velocity and acceleration signal of the temperature measuring ball 104 and the measured temperature signal are converted into digital signals by the analog / digital converter 202 and then sent to the data processing computer 201 through the RS-232 data port. The data processing computer 201 performs the following processing:

[0061] According to the initial velocity and acceleration signal of the temperature measuring ball 104, an integral calculation is performed for a certain period of time to obtain the motion trajectory of the temperature measuring ball 104; the position on the motion trajectory corresponds to a time point, which in turn corresponds to a furnace temperature. Within a certain period of time, the motion trajectory of the temperature measuring ball 104 is combined with the flue gas temperature information to obtain the flue gas temperature distribution information in the furnace.

[0062] Example 2

[0063] A furnace flue gas temperature measuring device, such as Figure 1 As shown, it includes a temperature measuring system 1 and a data processing system 2. The temperature measuring system 1 includes a temperature measuring ball 104 and a launching device. The launching device launches the temperature measuring ball 104 to move into the furnace;

[0064] The data processing system 2 includes a speed sensor 204, a wireless signal receiver 203, an analog / digital converter 202 and a data processing computer 201;

[0065] The temperature measuring ball 104 sends its own motion signal and the real-time measured flue gas temperature signal of each point in the furnace to the data processing system 2, and the data processing system 2 obtains the furnace flue gas temperature distribution information after processing.

[0066] The transmitting device gives the temperature measuring ball 104 an initial speed when it enters the furnace, and can trigger the temperature measuring ball 104 to start working in the furnace.

[0067] The data processing system 2 receives the initial velocity signal and acceleration signal of the temperature measuring ball 104 and the temperature signal measured in real time by the temperature measuring ball 104 in the furnace, and processes the received signals.

[0068] like Figure 2 As shown, the temperature measuring bulb 104 is provided with a high temperature resistant thermocouple 401 , a signal processor 402 , an acceleration sensor 403 , a wireless signal transmitter 404 and an electromagnetic signal receiver 405 .

[0069] The signal processor 402 , the acceleration sensor 403 , the wireless signal transmitter 404 and the electromagnetic signal receiver 405 are integrated into the same chip.

[0070] The high temperature resistant thermocouple 401 measures the flue gas temperature in the furnace, the acceleration sensor 403 measures the movement acceleration of the temperature measuring ball 104 in the furnace, the signal processor 402 receives and processes the measured flue gas temperature and movement acceleration signals, and then transmits the signal to the data processing system 2 outside the furnace via the wireless signal transmitter 404.

[0071] A power supply device is also provided in the temperature measuring ball 104 to supply power to the components inside the temperature measuring ball 104. The power supply device may be a separate battery or a battery integrated with the temperature measuring ball 104. The power supply device may be a dry cell, a storage battery or a lithium battery.

[0072] The temperature measuring point of the high temperature resistant thermocouple 401 is arranged on the surface of the temperature measuring ball 104 .

[0073] The surface of the temperature measuring ball 104 is provided with a high temperature insulation wrapping material 407 . Preferably, the wrapping material 407 is a ceramic fiber insulation material.

[0074] The high temperature insulation wrapping material 407 protects the components inside the temperature measuring ball 104, so that it can work normally for a certain period of time in the furnace. The ceramic fiber insulation material has high temperature resistance and insulation properties, which can make the temperature measuring ball 104 work at a high temperature of 1400° C. for a certain period of time.

[0075] The launching device includes an air pump 101 , a stop valve 102 , a launching gun barrel 103 and a trigger coil 105 . The air pump 101 generates high-pressure air to push the temperature measuring ball 104 into the furnace through the launching gun barrel 103 , and the trigger coil 105 sends a working signal to the temperature measuring ball 104 .

[0076] The stop valve 102 can prevent the transmitting device from erroneously transmitting the temperature measuring ball 104 , thereby improving the operational reliability of the entire temperature measuring device. The electromagnetic signal generated by the trigger coil 105 can conveniently control the operation of the temperature measuring ball 104 .

[0077] An infrared measuring point 205 is provided on the launch gun barrel 103 , and the speed sensor 204 obtains the initial speed of the temperature measuring ball 104 entering the furnace through the infrared measuring point 205 .

[0078] A battery 406 is provided in the temperature measuring ball 104 , and the electromagnetic signal receiver 405 receives the working signal sent by the trigger coil 105 , and the temperature measuring ball 104 is powered by the battery 406 and starts to work.

[0079] The following specifically describes a working process of the furnace flue gas temperature measuring device of the present invention:

[0080] When the stop valve 102 is opened, the high-pressure air generated by the air pump 101 pushes the temperature measuring ball 104 to move at a certain initial speed, and is shot into the furnace through the fire-viewing hole by the launching gun barrel 103. Before the temperature measuring ball 104 enters the furnace, the speed sensor 204 calculates the initial velocity of the temperature measuring ball 104 through the infrared measuring point 205 arranged on the launching gun barrel 103. An electromagnetic signal receiver 405 capable of receiving external electromagnetic signals is arranged inside the temperature measuring ball 104. When it receives the electromagnetic signal emitted by the trigger coil 105, the battery 406 starts to power the temperature measuring ball 104, allowing the temperature measuring ball 104 to enter the furnace and start working. The flue gas temperature signal measured by the high temperature resistant thermocouple 401 and the motion acceleration signal of the temperature measuring ball 104 measured by the acceleration sensor 403 are transmitted to the signal processor 402. The wireless signal transmitter 404 transmits the flue gas temperature signal and the acceleration signal to the wireless signal receiver 203 outside the furnace. The initial velocity and acceleration signal of the temperature measuring ball 104 and the measured temperature signal are converted into digital signals by the analog / digital converter 202 and then sent to the data processing computer 201 through the RS-232 data port.

[0081] The present invention also provides a furnace flue gas temperature measurement method, which adopts the furnace flue gas temperature measurement device described above.

[0082] like Figure 3 The figure shows a process of the furnace flue gas temperature measurement method of the present invention.

[0083] As a specific embodiment of the present invention, the furnace flue gas temperature measurement method comprises the following steps:

[0084] S1, measuring the initial velocity of the temperature measuring ball entering the furnace, the acceleration information of the movement in the furnace, and using the temperature measuring ball to measure the temperature information inside the furnace;

[0085] S2, processing the obtained initial velocity and acceleration information, calculating the motion trajectory of the temperature measuring ball in the furnace, combining the motion trajectory with the measured temperature information, and obtaining the flue gas temperature distribution information in the furnace.

[0086] Example 3

[0087] This embodiment is a further optimization or limitation of the technical solution of Embodiment 1.

[0088] S1, measuring the initial velocity of the temperature measuring ball 104 entering the furnace and the acceleration of the temperature measuring ball 104 moving in the furnace, allowing the temperature measuring ball 104 to move in the furnace for a certain period of time and measuring the flue gas temperature at each point in real time;

[0089] S2, based on the obtained initial velocity and acceleration information of the temperature measuring ball 104, integrally calculate the motion trajectory of the temperature measuring ball 104 in the furnace within a certain period of time, combine the motion trajectory within a certain period of time with the flue gas temperature information of each point in the furnace, and obtain the flue gas temperature distribution information in the furnace;

[0090] S3, changing the direction of the initial velocity of the temperature measuring ball 104 entering the furnace and / or the movement time in the furnace, repeating steps S1 and S2, and obtaining an information base of the flue gas temperature distribution in the furnace.

[0091] The setting position of the launch gun barrel 103 can be adjusted and / or the injection angle of the high-pressure gas generated by the air pump 101 can be adjusted, so that the temperature measuring ball 104 has a variety of different movement trajectories in the furnace. Different movement trajectories can correspond to the detection of flue gas temperature information at different spatial positions, measure multiple parts in the furnace, expand the detection range of the flue gas temperature, and obtain an information database of the flue gas temperature distribution in the furnace, which is convenient for a comprehensive understanding of the flue gas temperature distribution in the furnace, which is more real and reliable.

[0092] Example 4

[0093] This embodiment is a further optimization or limitation of any technical solution of Embodiments 1-3.

[0094] The power supply device arranged in the temperature measuring ball 104 is a battery. The shell of the temperature measuring ball 104 is the shell of the battery. The battery and the temperature measuring ball 104 are integrated into one design. The battery can be charged, and its charging port is arranged on the outer surface of the temperature measuring ball 104.

[0095] When the furnace flue gas temperature measuring device is not in use, the temperature measuring ball 104 can be taken out for charging and continued to be used after charging, which is convenient and environmentally friendly. In addition, the overall structure of the temperature measuring ball 104 is simplified, which is conducive to its flexible movement in the furnace, thereby obtaining more comprehensive flue gas temperature information.

[0096] Example 5

[0097] This embodiment is a further optimization or limitation of any technical solution of Embodiments 1-4.

[0098] The temperature measurement points of the high-temperature resistant thermocouple 401 are evenly distributed along different ball diameter directions of the temperature measuring ball 104 to form multiple groups of temperature measurement circles. The signal processor 402 receives the temperature information obtained from each temperature measurement point, calculates the statistical average value and transmits the result to the data processing system 2 outside the furnace via the wireless signal transmitter 404.

[0099] This can more quickly and accurately measure the flue gas temperature in the furnace and truly reflect the actual temperature of the flue gas.

[0100] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A furnace flue gas temperature measuring device, characterized in that: The invention comprises a temperature measuring system (1) and a data processing system (2). The temperature measuring system (1) comprises a temperature measuring ball (104) and a launching device. The launching device comprises an air pump (101), a stop valve (102), a launching gun barrel (103) and a trigger coil (105). The air pump (101) generates high-pressure air to push the temperature measuring ball (104) to be launched from the launching gun barrel (103) into a furnace. The injection angle of the high-pressure air generated by the air pump (101) and / or the setting position of the launching gun barrel (103) can be adjusted. The trigger coil (105) sends a working signal to the temperature measuring ball (104). The stop valve (102) is arranged between the outlet of the air pump (101) and the launching gun barrel (103) to control the launching of the temperature measuring ball (104). The temperature measuring ball (104) sends its own motion signal and the real-time measured smoke temperature signal of each point in the furnace to the data processing system (2). After the data processing system (2) processes the signal, it obtains the furnace smoke temperature distribution information.

2. The furnace flue gas temperature measuring device according to claim 1, characterized in that: The temperature measuring bulb (104) is provided with a thermocouple (401), a signal processor (402), an acceleration sensor (403), a wireless signal transmitter (404) and an electromagnetic signal receiver (405); The electromagnetic signal receiver (405) receives the working signal sent by the trigger coil (105) to control the temperature measuring ball (104) to start working, the thermocouple (401) measures the flue gas temperature in the furnace, the acceleration sensor (403) detects the acceleration of the temperature measuring ball (104) and transmits the temperature signal and the acceleration signal to the signal processor (402) for processing, and transmits them to the data processing system (2) through the wireless signal transmitter (404).

3. The furnace flue gas temperature measuring device according to claim 2, characterized in that: The data processing system (2) comprises a speed sensor (204), a wireless signal receiver (203), an analog / digital converter (202) and a data processing computer (201); The speed sensor (204) measures the initial speed of the temperature measuring ball (104) entering the furnace, and the wireless signal receiver (203) receives the temperature signal and acceleration signal processed by the signal processor (402), converts them into digital signals through the analog / digital converter (202), and transmits them to the data processing computer (201).

4. The furnace flue gas temperature measuring device according to claim 3 is characterized in that: The signal processor (402), the acceleration sensor (403), the wireless signal transmitter (404) and the electromagnetic signal receiver (405) are integrated into the same chip.

5. The furnace flue gas temperature measuring device according to any one of claims 2 to 4, characterized in that: The temperature measuring point of the thermocouple (401) is arranged on the surface of the temperature measuring ball (104).

6. The furnace flue gas temperature measuring device according to claim 5, characterized in that: The temperature measuring points are evenly arranged along different ball diameter directions of the temperature measuring ball (104) to form a plurality of groups of temperature measuring circles.

7. The furnace flue gas temperature measuring device according to claim 6, characterized in that: The surface of the temperature measuring ball (104) is provided with a high-temperature heat-insulating wrapping material (407).

8. The furnace flue gas temperature measuring device according to claim 7, characterized in that: The wrapping material (407) is a ceramic fiber thermal insulation material.

9. The furnace flue gas temperature measuring device according to claim 1, characterized in that: An infrared measuring point (205) is provided on the launch gun barrel (103), and a speed measuring sensor (204) measures the initial speed of the temperature measuring ball (104) entering the furnace through the infrared measuring point (205).

10. The furnace flue gas temperature measuring device according to claim 1, characterized in that: A battery (406) is arranged inside the temperature measuring ball (104), and the electromagnetic signal receiver (405) receives the working signal sent by the trigger coil (105), and the temperature measuring ball (104) is powered by the battery (406) and starts working.

11. A method for measuring furnace flue gas temperature, characterized in that: A furnace flue gas temperature measuring device as described in any one of claims 1 to 7 is used.

12. The furnace flue gas temperature measurement method according to claim 11, characterized in that: The following steps are involved: S1, measuring the initial velocity of the temperature measuring ball (104) entering the furnace and the acceleration of the temperature measuring ball (104) moving in the furnace, allowing the temperature measuring ball (104) to move in the furnace for a certain period of time and measuring the flue gas temperature at each point in real time; S2, based on the obtained initial velocity and acceleration information of the temperature measuring ball (104), the movement trajectory of the temperature measuring ball (104) in the furnace within a certain period of time is integrated and calculated, and the movement trajectory within a certain period of time is combined with the flue gas temperature information of each point in the furnace to obtain the flue gas temperature distribution information in the furnace.

13. The furnace flue gas temperature measurement method according to claim 12, characterized in that: The following steps are also included: S3, changing the direction of the initial velocity of the temperature measuring ball (104) entering the furnace and / or the movement time in the furnace, repeating steps S1 and S2, and obtaining an information base of the flue gas temperature distribution in the furnace.

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