Boiler cyclone separator material level measuring equipment and measuring method thereof

Abstract

The invention relates to the technical field of boiler cyclone separators, in particular to boiler cyclone separator material level measuring equipment and a measuring method thereof, and the boiler cyclone separator material level measuring equipment comprises a material level measuring equipment main body; the device further comprises a lifting rope, a weighing sensor, a weighing transmitter, a protection assembly and a load monitor. According to the invention, key components of the weighing sensor and the weighing transmitter are designed into modular structures, so that the weighing sensor and the weighing transmitter are convenient to disassemble and replace, and high-temperature protection measures are designed outside the weighing sensor and the weighing transmitter, so that the influence of high temperature on equipment performance is reduced; the load condition of each bearing point of the large cyclone separator can be visually presented to operation monitoring personnel through a load monitor, so that the operation personnel can evaluate and adjust the circulation condition of boiler ash in real time, and an overweight alarm can be provided; the method plays a crucial role in safe and stable operation of the generator set of a power generation company, and also has a great reference value for the same type of circulating fluidized bed generator set.

Description

Technical Field

[0001] The invention relates to the technical field of boiler cyclone separators, and in particular to a material level measuring device and a measuring method for a boiler cyclone separator. Background Art

[0002] A circulating fluidized bed boiler is a boiler that uses the cleanest coal combustion technology with the highest degree of industrialization. It uses fluidized combustion and its main structure includes two parts: a combustion chamber and a circulating furnace. During the operation of a circulating fluidized bed boiler, solid particles (such as fuel particles, desulfurizer particles, etc.) are fluidized and burned in the bed. The cyclone separator can effectively separate the solid particles entrained in the high-temperature flue gas leaving the furnace, ensuring that the unburned fuel particles in the solid particles can return to the furnace for full combustion. It also ensures the reasonable circulation of solid materials in the boiler, and maintains the stability of the bed material inventory by returning the separated particles to the bottom of the furnace.

[0003] However, if the ash powder cannot return to the furnace in time during the circulation process, it will accumulate in the cyclone separator. When the ash powder level in the cyclone separator is too high, the cyclone separator may tilt or even collapse. The cyclone separator cylinder is composed of boiler pipes, and high-temperature steam flows in the pipes. At the same time, its internal chamber is also filled with high-temperature flue gas. It is impossible to use a more direct method to measure the particle material level in the cyclone separator chamber. Therefore, installation under high temperature will affect the performance of the measuring equipment and reduce the service life of the measuring equipment.

[0004] Therefore, in view of the problem that it is difficult to accurately monitor the volume of fuel in the cylinder during the operation of the above-mentioned existing cyclone separator, and the high temperature environment affects the use of the measuring equipment, a boiler cyclone separator level measuring device and a measuring method thereof can be designed. Summary of the invention

[0005] In order to overcome the problem that it is difficult to accurately monitor the volume of fuel in the cylinder during the operation of the existing cyclone separator, and the high temperature environment affects the use of the measuring equipment.

[0006] The technical solution of the present invention is: a boiler cyclone separator material level measuring device, including a material level measuring device body; also including a lifting rope, a weighing sensor, a weighing transmitter, a protection component, and a load monitor. A supporting foot is fixed to the lower end of the material level measuring device body, a lifting ring is fixed to the lower end of the material level measuring device body, a lifting rope is connected to the lower end of the lifting ring, an upper connecting component is arranged at the lower end of the lifting rope, the upper connecting component includes a connector, a measuring cylinder shell is connected to the lower end of the upper connecting component, a weighing sensor is installed on the inner side of the measuring cylinder shell, a weighing transmitter is installed on the upper end of the weighing sensor, a protection component is arranged on the outer side of the measuring cylinder shell, the protection component includes a protective shell, a lower connecting component is arranged at the lower end of the measuring cylinder shell, a cyclone separator is welded to the lower end of the lower connecting component, a mounting bracket is fixed to the back of the material level measuring device body, and a load monitor is installed on the back of the mounting bracket.

[0007] Preferably, by arranging a weighing sensor, a weighing transmitter and a load monitor, the weight of the cyclone separator can be monitored in real time and accurately measured. The upper connecting component is used to facilitate the installation of the weighing sensor and the weighing transmitter under the suspension rope. The lower connecting component is used to facilitate the installation of the measuring cylinder shell on the cyclone separator. The protective component is set to ensure that the weighing sensor and the weighing transmitter can operate stably in a high temperature environment. The equipment realizes real-time monitoring and accurate measurement of the weight of the cyclone separator by means of reasonable layout of weighing sensors, use of high temperature resistant materials and modular design, providing a strong guarantee for the safe and stable operation of the boiler system.

[0008] Preferably, the lifting rings are distributed at equal intervals, 16 lifting rings are provided, and the lifting ropes and the lifting rings are arranged in a one-to-one correspondence.

[0009] Preferably, the lower end of the sling is connected to a connector, the lower end of the connector is connected to a connecting column, the surface of the connecting column is connected to a first gasket, the surface of the connecting column is connected to a first nut, and the first nut is threadedly connected to the connecting column.

[0010] Preferably, a protective shell is provided on the outer side of the measuring cylinder shell, an air inlet is provided at the lower end of the protective shell, and a micro fan is installed on the inner side of the air inlet.

[0011] Preferably, a guide plate is fixed on the inner side of the protective shell, the guide plate is a spiral structure, and an air outlet is opened on the surface of the protective shell.

[0012] Preferably, a heat insulating layer is provided on the inner side of the measuring cylinder shell, and the heat insulating layer is made of silicate thermal insulation material.

[0013] Preferably, a protrusion is fixed to the lower end of the measuring cylinder shell, a mounting block is connected to the lower end of the protrusion, the mounting block is sleeved and connected to the protrusion, a bolt is connected to the inner side of the mounting block, a second gasket is connected to the surface of the bolt, and the bolt is threadedly connected to the second nut.

[0014] Preferably, the weighing sensor is electrically connected to the weighing transmitter, and the weighing transmitter is electrically connected to the load monitor.

[0015] A method for measuring a material level of a boiler cyclone separator includes the above-mentioned material level measuring device of the boiler cyclone separator, and the steps are as follows: The first step is initial weight calibration. When the cyclone separator is unloaded, the initial weight is measured and recorded through the load monitor. This weight is used as the reference value for subsequent measurements. The second step is real-time monitoring. The load monitor is started to continuously collect the weight data of the cyclone separator and transmit it in real time through the weighing transmitter. The third step is weight change analysis, which compares the real-time monitored weight with the initial weight and calculates the weight change. An increase in weight indicates an increase in the accumulation of particulate materials, while a decrease in weight indicates the discharge of particulate materials. The fourth step is to judge the degree of accumulation. According to the weight change combined with the design parameters of the cyclone separator and the material characteristics, a reasonable threshold is set. When the weight change exceeds the set threshold, an alarm is triggered to prompt the operator to take corresponding measures. The beneficial effects of the present invention are as follows: the boiler cyclone separator material level measuring device and the measuring method thereof, by designing the key components of the weighing sensor and the weighing transmitter into a modular structure, are convenient for disassembly and replacement. When a component fails, it can be quickly repaired without stopping the machine. High-temperature protection measures are designed on the outside of the weighing sensor and the weighing transmitter to reduce the impact of high temperature on equipment performance and extend the service life of the equipment. The load conditions of each bearing point of the large cyclone separator are presented to the operation monitoring personnel in an intuitive manner, so that the operation personnel can make real-time evaluation and adjustment of the circulation conditions of the boiler ash, and can provide an overweight alarm, thereby preventing the occurrence of unsafe conditions such as overweight, tilting and even collapse of the cyclone separator caused by blockage of the cyclone separator to a great extent. At the same time, the equipment plays a vital role in the safe and stable operation of the power generation unit of the power generation company, and also has great reference value for the same type of circulating fluidized bed power generation units. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ; Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention; Figure 4 This is a disassembled diagram of the protective shell of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the protective shell of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the cross-section of the measuring cylinder shell of the present invention.

[0017] Explanation of the accompanying drawings: 1. Main body of the material level measuring equipment; 2. Support foot; 3. Lifting ring; 4. Lifting rope; 5. Upper connecting assembly; 6. Measuring cylinder shell; 7. Weighing sensor; 8. Weighing transmitter; 9. Protection assembly; 10. Lower connecting assembly; 11. Cyclone separator; 12. Mounting bracket; 13. Load monitor; 501. Connector; 502. Connecting column; 503. First gasket; 504. First nut; 901. Protective shell; 902. Air inlet; 903. Micro fan; 904. Guide plate; 905. Air outlet; 906. Insulation layer; 1101. Protrusion; 1102. Mounting block; 1103. Bolt; 1104. Second gasket; 1105. Second nut. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1-Figure 6 The present invention provides an embodiment: a boiler cyclone separator material level measuring device, comprising a material level measuring device body 1; further comprising a hanging rope 4, a weighing sensor 7, a weighing transmitter 8, a protection component 9, and a load monitor 13, wherein a supporting foot 2 is fixed to the lower end of the material level measuring device body 1, a hanging ring 3 is fixed to the lower end of the material level measuring device body 1, a hanging rope 4 is connected to the lower end of the hanging ring 3, an upper connecting component 5 is arranged at the lower end of the hanging rope 4, the upper connecting component 5 comprises a connector 501, a measuring cylinder shell 6 is connected to the lower end of the upper connecting component 5, a weighing sensor 7 is installed on the inner side of the measuring cylinder shell 6, a weighing transmitter 8 is installed on the upper end of the weighing sensor 7, a protection component 9 is arranged on the outer side of the measuring cylinder shell 6, the protection component 9 comprises a protective shell 901, a lower connecting component 10 is arranged at the lower end of the measuring cylinder shell 6, and the lower end of the lower connecting component 10 A cyclone separator 11 is welded, and a mounting bracket 12 is fixed on the back of the main body 1 of the material level measuring device. A load monitor 13 is installed on the back of the mounting bracket 12. By arranging the weighing sensor 7, the weighing transmitter 8 and the load monitor 13, the weight of the cyclone separator 11 can be monitored and accurately measured in real time. The upper connecting component 5 is convenient for installing the weighing sensor 7 and the weighing transmitter 8 under the suspension rope 4. The lower connecting component 10 is also convenient for installing the measuring cylinder shell 6 on the cyclone separator 11. The protective component 9 is set to ensure that the weighing sensor 7 and the weighing transmitter 8 can operate stably in a high temperature environment. The equipment realizes real-time monitoring and accurate measurement of the weight of the cyclone separator 11 by means of reasonable layout of the weighing sensor 7, the use of high temperature resistant materials and modular design, etc., providing a strong guarantee for the safe and stable operation of the boiler system.

[0020] See also Figure 3-Figure 4 In this embodiment, the lifting rings 3 are distributed at equal intervals, and 16 lifting rings 3 are provided. The lifting rope 4 is arranged in a one-to-one correspondence with the lifting ring 3. The lower end of the lifting rope 4 is connected to the connector 501, and the lower end of the connector 501 is connected to the connecting column 502. The surface of the connecting column 502 is connected to a first gasket 503, and the surface of the connecting column 502 is connected to a first nut 504. The first nut 504 is threadedly connected to the connecting column 502. The connecting column 502 is inserted into the jack on the connector 501, and the first nut 504 is tightened to fix the measuring cylinder shell 6 on the connector 501. A protective shell 901 is provided on the outer side of the measuring cylinder shell 6, and an air inlet 902 is provided at the lower end of the protective shell 901. A micro fan 903 is installed on the inner side of the air inlet 902. By starting the micro fan 903, the air flow near the protective shell 901 can be accelerated, and the heat dissipation effect can be achieved, thereby reducing the impact of high temperature on the performance of the equipment.

[0021] See also Figure 4-Figure 6 In this embodiment, a guide plate 904 is fixed on the inner side of the protective shell 901. The guide plate 904 is a spiral structure. An air outlet 905 is opened on the surface of the protective shell 901. The external air is guided by the spiral structure guide plate 904 to form a spiral airflow and rise, so as to take away the heat on the outer surface of the measuring cylinder shell 6. A heat insulation layer 906 is arranged on the inner side of the measuring cylinder shell 6. The heat insulation layer 906 adopts silicate heat insulation material. The high temperature resistant material is selected to further reduce the influence of high temperature on the performance of the equipment and extend the service life of the equipment. A protrusion 1101 is fixed on the lower end of the measuring cylinder shell 6. The lower end of the protrusion 1101 is connected with a mounting block 1102. The mounting block 1102 is sleeved and connected with the protrusion 1101. The mounting block 1102 The inner side is connected with a bolt 1103, the surface of the bolt 1103 is connected with a second gasket 1104, the bolt 1103 is threadedly connected with the second nut 1105, and is inserted into the mounting block 1102 through the protrusion 1101. Through the locking of the bolt 1103 and the second nut 1105, the mounting block 1102 can be fixed together with the measuring cylinder shell 6, and vice versa, it is easy to disassemble. The weighing sensor 7 is electrically connected to the weighing transmitter 8, and the weighing transmitter 8 is electrically connected to the load monitor 13. The vertical pressure borne by the hanging device can be accurately measured through the weighing sensor 7, and then the digital signal is stably transmitted to the load monitor 13 through the weighing transmitter 8, so as to display the weight change of the material in the cyclone separator 11 in real time, which is convenient for the operator to monitor and analyze.

[0022] A method for measuring a material level of a boiler cyclone separator includes the above-mentioned material level measuring device of the boiler cyclone separator, and the steps are as follows: The first step is initial weight calibration. When the cyclone separator 11 is in an unloaded state, the initial weight is measured and recorded by the load monitor 13. This weight is used as a reference value for subsequent measurements. The second step is real-time monitoring, starting the load monitor 13, continuously collecting the weight data of the cyclone separator 11, and transmitting and processing it in real time through the weighing transmitter 8; The third step is weight change analysis, which compares the real-time monitored weight with the initial weight and calculates the weight change. An increase in weight indicates an increase in the accumulation of particulate materials, while a decrease in weight indicates the discharge of particulate materials. The fourth step is to judge the accumulation degree. According to the weight change combined with the design parameters of the cyclone separator 11 and the material characteristics, a reasonable threshold is set. When the weight change exceeds the set threshold, an alarm is triggered to prompt the operator to take corresponding measures.

[0023] When in use, first insert the connecting column 502 into the socket on the connector 501, then put on the first gasket 503, and then tighten the first nut 504, so that the measuring cylinder shell 6 can be fixed on the connector 501, then, insert the protrusion 1101 into the mounting block 1102, and then insert the bolt 1103, and then put on the second gasket 1104 and tighten the second nut 1105, so as to fix the mounting block 1102 under the measuring cylinder shell 6, and finally weld the bottom of the mounting block 1102 to the cyclone separator 11, and the installation of the measuring equipment is completed.

[0024] Through the above steps, the upper connecting assembly and the lower connecting assembly can be used to quickly disassemble and install the key components of the weighing sensor and the weighing transmitter. By designing high-temperature protection measures on the outside of the weighing sensor and the weighing transmitter, the impact of high temperature on equipment performance can be reduced. The load condition of each bearing point of the large cyclone separator can be presented to the operation monitoring personnel in an intuitive manner through the load monitor, so that the operation personnel can make real-time evaluation and adjustment of the circulation of boiler ash, and can provide overweight alarm, so as to solve the problem that it is difficult to accurately monitor the volume of fuel in the cylinder during the operation of the existing cyclone separator, and the high temperature environment affects the use of the measuring equipment.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A boiler cyclone separator material level measuring device, comprising a material level measuring device body (1); characterized in that: The device also comprises a lifting rope (4), a weighing sensor (7), a weighing transmitter (8), a protection component (9), and a load monitor (13). A support foot (2) is fixed to the lower end of the material level measuring device body (1). A lifting ring (3) is fixed to the lower end of the material level measuring device body (1). The lower end of the lifting ring (3) is connected to the lifting rope (4). An upper connecting component (5) is arranged at the lower end of the lifting rope (4). The upper connecting component (5) comprises a connector (501). The lower end of the upper connecting component (5) is connected to a measuring cylinder shell (6). The measuring cylinder shell ( A weighing sensor (7) is installed on the inner side of the measuring cylinder shell (6), a weighing transmitter (8) is installed on the upper end of the weighing sensor (7), a protection component (9) is arranged on the outer side of the measuring cylinder shell (6), the protection component (9) includes a protection shell (901), a lower connecting component (10) is arranged on the lower end of the measuring cylinder shell (6), a cyclone separator (11) is welded to the lower end of the lower connecting component (10), a mounting bracket (12) is fixed on the back side of the material level measuring device body (1), and a load monitor (13) is installed on the back side of the mounting bracket (12).

2. The boiler cyclone separator material level measuring device according to claim 1, characterized in that: The lifting rings (3) are distributed at equal intervals, 16 lifting rings (3) are provided, and the lifting ropes (4) and the lifting rings (3) are provided in a one-to-one correspondence.

3. The boiler cyclone separator material level measuring device according to claim 2, characterized in that: The lower end of the suspension rope (4) is connected to a connector (501), the lower end of the connector (501) is connected to a connecting column (502), the surface of the connecting column (502) is connected to a first gasket (503), the surface of the connecting column (502) is connected to a first nut (504), and the first nut (504) is threadedly connected to the connecting column (502).

4. The boiler cyclone separator material level measuring device according to claim 1, characterized in that: A protective shell (901) is provided on the outer side of the measuring cylinder shell (6), an air inlet (902) is provided at the lower end of the protective shell (901), and a micro fan (903) is installed on the inner side of the air inlet (902).

5. The boiler cyclone separator material level measuring device according to claim 4, characterized in that: A guide plate (904) is fixed on the inner side of the protective shell (901), the guide plate (904) is a spiral structure, and an air outlet (905) is provided on the surface of the protective shell (901).

6. The boiler cyclone separator material level measuring device according to claim 4, characterized in that: A heat insulation layer (906) is provided on the inner side of the measuring cylinder shell (6), and the heat insulation layer (906) is made of silicate heat insulation material.

7. The boiler cyclone separator material level measuring device according to claim 5, characterized in that: A protrusion (1101) is fixed to the lower end of the measuring cylinder shell (6); a mounting block (1102) is connected to the lower end of the protrusion (1101); the mounting block (1102) is sleeved and connected to the protrusion (1101); a bolt (1103) is connected to the inner side of the mounting block (1102); a second gasket (1104) is connected to the surface of the bolt (1103); and the bolt (1103) is threadedly connected to the second nut (1105).

8. The boiler cyclone separator material level measuring device according to claim 1, characterized in that: The weighing sensor (7) is electrically connected to the weighing transmitter (8), and the weighing transmitter (8) is electrically connected to the load monitor (13).

9. A method for measuring the material level of a boiler cyclone separator, characterized in that: The method comprises the following steps: The first step is initial weight calibration, in which the cyclone separator (11) is in an unloaded state, and its initial weight is measured and recorded by a load monitor (13); The second step is real-time monitoring, starting the load monitor (13), continuously collecting the weight data of the cyclone separator (11), and transmitting and processing it in real time through the weighing transmitter (8); The third step is weight change analysis, which compares the real-time monitored weight with the initial weight and calculates the weight change; The fourth step is to judge the accumulation degree, and judge the condition of the material in the cyclone separator (11) according to the weight change.

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