Pulverized coal pipeline arrangement method, system and equipment for double-tangent-circle combustion boiler and medium

Abstract

The invention relates to the technical field of coal-fired thermal power generating units, in particular to a double-tangent-circle combustion boiler pulverized coal pipeline arrangement method, system, device and medium, and the method comprises the steps that pulverized coal separation nodes in a pulverized coal pipeline system are determined, and Y-shaped distributors are arranged at the pulverized coal separation nodes; the inlet side of the Y-shaped distributor is connected with the main pipeline, and the outlet side of the Y-shaped distributor is respectively connected with the two pulverized coal branch pipelines; the concentration and speed of pulverized coal entering each pulverized coal branch pipeline are uniformly adjusted by adjusting the Y-shaped distributor, so that the concentration of the pulverized coal in each pulverized coal branch pipeline is uniformly distributed. According to the method, the uniform distribution of the pulverized coal in the branch pipelines can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of coal-fired thermal power generation units, and in particular to a method, system, equipment and medium for arranging coal powder pipelines of a double-cut garden combustion boiler. Background Art

[0002] Currently, about 30% of 1000MW units are double-tangential combustion boilers, where the burner forms two reverse double-tangential circles (double fireballs) in the furnace. Figure 1 As shown in the figure, each unit is equipped with 6 coal mills, and four pulverized coal pipelines are arranged at the outlet of each coal mill. Each pulverized coal pipeline is divided into two parts in front of or behind the furnace by a T-shaped pulverized coal distributor. Each coal mill supplies a layer of 8 burners in total. Figure 1 The existing T-shaped pulverized coal distributor is arranged after the 90° elbow of the main pipeline. Figure 2 As shown in the figure, the high-speed primary air powder enters the pulverized coal distributor seriously unevenly due to the centrifugal force at the 90° elbow, resulting in a large deviation in the air powder concentration in the branch pipe after the pulverized coal distributor, causing serious wear of the powder pipe and frequent leakage of powder during operation. The annual repair cost of the powder pipe wear defect is about 1 million yuan per unit; the large deviation in the primary air powder concentration can easily cause problems such as biased burning of the boiler; since there are many 90° elbows in the connection between the T-type distributor and the pipeline, the resistance of the primary air system is relatively large, affecting the increase in the output of the pulverizer; usually, the boiler has low oxygen content when operating under high load. If the primary air powder is unevenly distributed, it will aggravate the local oxygen-deficient combustion in the furnace, and the CO concentration in the local area will be seriously high, which not only reduces the economy of the boiler, but also is not conducive to the prevention and control of high-temperature corrosion of the water-cooled wall, seriously affecting the safe and economical operation of the unit. Summary of the invention

[0003] The present invention provides a method, system, equipment and medium for arranging coal powder pipelines in a double-cut garden combustion boiler, aiming to solve the problem that large deviation of air powder concentration in different branch pipes causes wear of powder pipes, powder leakage and causes biased burning of the boiler.

[0004] The objective of the present invention is achieved by the following technical solutions: In a first aspect, the present invention provides a method for arranging a pulverized coal pipeline system of a double-cut garden combustion boiler, comprising: determining a pulverized coal separation node in the pulverized coal pipeline system, at which a Y-type distributor is arranged; The inlet side of the Y-type distributor is connected to the main pipeline, and the outlet side is connected to two coal powder branch pipelines respectively; The pulverized coal concentration rate entering each pulverized coal branch pipeline is uniformly adjusted by adjusting the Y-type distributor, so that the pulverized coal concentration of each pulverized coal branch pipeline is evenly distributed.

[0005] As a further improvement of the present invention, the Y-type distributor is horizontally arranged between the main pipeline and the two coal powder branch pipelines.

[0006] As a further improvement of the present invention, the Y-type distributor is a double-adjustable Y-type distributor, and two adjustable baffles are arranged in the double-adjustable Y-type distributor. When the adjustable baffles are adjusted to a set angle, the current angle is kept fixed, and the length of the adjustable baffles is smaller than the diameter of the coal powder branch pipeline.

[0007] As a further improvement of the present invention, a primary air double-core adjustable shrinkage hole is arranged at the vertical section of each pulverized coal branch pipeline to adjust the pulverized coal wind pressure balance in the pulverized coal branch pipeline.

[0008] As a further improvement of the present invention, the double-core adjustable shrinkage hole is also configured with a remote control actuator for controlling the opening of the double-core adjustable shrinkage hole to adjust the coal powder wind pressure balance in the coal powder branch pipeline when adjusting the coal powder concentration and speed in the pipeline.

[0009] As a further improvement of the present invention, an electrostatic induction probe is also installed on the straight pipe section of the downstream coal powder branch pipeline of the double-core adjustable shrinkage hole, and the electrostatic induction probe is used to monitor the primary air velocity and coal powder concentration in each coal powder branch pipeline in real time.

[0010] As a further improvement of the present invention, when the primary wind speed deviation of the double-cut circle on the same layer detected by the electrostatic induction probe exceeds the first set threshold, or the coal powder concentration deviation exceeds the second set threshold, the Y-type distributor and / or the double-core adjustable shrinkage hole are adjusted to achieve a balance between the wind speed and coal powder concentration of each coal powder branch pipeline.

[0011] As a further improvement of the present invention, the remote control actuator is connected to a DCS distributed control system or a programmable logic controller, and the Y-type distributor and the remote control actuator are controlled and adjusted through a preset algorithm and real-time data feedback until the optimal air-powder ratio and flow rate are achieved.

[0012] As a further improvement of the present invention, the vertical section of the downstream coal powder branch pipeline where the electrostatic induction probe is located is also provided with mutually perpendicular measuring holes, the inner diameter range of the measuring holes is between 45 and 55 mm, and the measuring holes are used to test the primary wind speed and coal powder concentration of the coal powder branch pipeline, and calibrate the monitoring results generated by the electrostatic induction probe.

[0013] In a second aspect, the present invention further provides a double-cut garden combustion boiler pulverized coal pipeline system, which adopts the above-mentioned double-cut garden combustion boiler pulverized coal pipeline system layout method, including multiple main pipelines and a plurality of pulverized coal branch pipelines; A pulverized coal separation node is provided between the main pipeline and the two pulverized coal branch pipelines, and a Y-type distributor is arranged at the pulverized coal separation node; the inlet side of the Y-type distributor is connected to the main pipeline, and the outlet side is respectively connected to the two pulverized coal branch pipelines; The Y-type distributor is adjusted to uniformly adjust the coal powder concentration speed entering each coal powder branch pipeline, thereby achieving uniform distribution of coal powder concentration in each coal powder branch pipeline.

[0014] In a third aspect, a computer-readable storage medium storing one or more programs, wherein the one or more programs include instructions, which, when executed by a computing device, enable the computing device to simulate and execute the above-mentioned method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler.

[0015] According to a fourth aspect, a computing device includes: One or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include simulation steps for executing the above-mentioned double-cut garden combustion boiler coal powder piping system layout method.

[0016] The beneficial effects of the present invention are as follows: the method for arranging the pulverized coal pipeline system of a double-cut garden combustion boiler provided by the present invention is provided with a Y-type distributor at the pulverized coal separation node between the main pipeline and the pulverized coal branch pipeline, and the pulverized coal is ensured to be evenly distributed from the inlet to each outlet by the Y-type distributor, and the pulverized coal is evenly distributed in the branch pipeline by adjusting the internal structure (such as the shape and size of the flow channel, etc.) and the airflow parameters (such as the airflow velocity, pressure, etc.) of the Y-type distributor. The airflow dynamics design inside the distributor can ensure that the pulverized coal particles are subjected to uniform force during the flow process, thereby avoiding the phenomenon of excessively high or low local concentrations. By evenly distributing the pulverized coal, the waste of pulverized coal or the phenomenon of inadequate combustion caused by excessively high or low pulverized coal concentrations in the branch pipeline can be avoided, thereby improving the utilization rate of the pulverized coal.

[0017] Furthermore, the horizontal arrangement helps maintain the stability of the airflow and reduce the problem of uneven distribution of coal powder caused by airflow disturbance. This helps to ensure that each branch of coal powder can obtain a uniform concentration of coal powder. At the same time, the horizontally arranged Y-type distributor helps to reduce the risk of blockage of coal powder during the distribution process. Since the coal powder is less affected by gravity when flowing in the horizontal direction, it is less likely to accumulate and block inside the distributor or in the branch pipeline.

[0018] Furthermore, by adjusting the two adjustable baffles to a set angle, the flow path and distribution ratio of the pulverized coal in the Y-type distributor can be precisely controlled. This design enables the pulverized coal to be evenly distributed to the two pulverized coal branch pipes according to a predetermined ratio, avoiding the problem of uneven distribution of pulverized coal that may occur in traditional distribution methods. Once the adjustable baffle is adjusted to a set angle and fixed, it can ensure that the distribution ratio of pulverized coal remains stable during long-term operation, thereby improving the reliability and stability of the system.

[0019] Furthermore, the wind pressure in the coal powder branch pipeline is further accurately adjusted through the primary air double-core adjustable shrinkage hole. By adjusting the opening of the shrinkage hole, the primary air speed of each coal powder branch pipeline at the burner inlet can be ensured to be consistent, avoiding the problem of unstable coal powder combustion caused by uneven wind pressure. The problem of eccentric flow of coal powder is effectively solved. This not only reduces flow losses, but also avoids the problem of excessive wear of the pipe wall caused by eccentric flow.

[0020] Furthermore, the remote control actuator can achieve precise adjustment of the double-core adjustable shrinkage hole opening, and make fine or large adjustments according to the actual needs of coal powder concentration and speed to meet the precise control requirements of the combustion system. Combined with sensors and control systems, the remote actuator can achieve automatic control, reduce manual intervention, and improve the automation level and operation efficiency of the system.

[0021] Furthermore, the electrostatic induction probe can monitor the primary air velocity and coal concentration in the coal powder branch line in real time, providing accurate data support for the combustion system. This enables operators to understand the coal powder flow status in a timely manner and make corresponding adjustments. By monitoring the coal powder concentration and primary air velocity in real time, it can ensure that the coal powder is fully mixed with the air and optimize the combustion conditions. This helps to improve the combustion efficiency of the coal powder and reduce pollutants generated by incomplete combustion.

[0022] Furthermore, through preset algorithms and real-time data feedback, the system can accurately adjust the action of the Y-type distributor and actuator to achieve fine adjustment of the air-powder ratio and flow rate, thereby ensuring the stability and efficiency of the combustion process.

[0023] Furthermore, the electrostatic induction probe can be calibrated and calibrated by regular or irregular actual measurement through the measuring hole. This helps to eliminate the measurement deviation caused by long-term use of the probe, environmental changes and other factors, and ensure the accuracy and consistency of the monitoring data. Combining the dual monitoring methods of the electrostatic induction probe and the measuring hole, a comprehensive monitoring of the flow state of the coal powder branch pipeline can be formed. When the electrostatic induction probe fails or is abnormal, the data from the measuring hole can be used as a backup or reference to ensure that the system can operate continuously and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is the layout diagram of the pulverized coal pipeline of Unit 1 of a certain power plant in the prior art; Figure 2 It is a T-type distributor in the prior art; Figure 3 Schematic diagram of the connection between the pulverized coal pipeline and the pulverized coal distributor according to an embodiment of the present invention; Figure 4 Schematic diagram of a Y-shaped pulverized coal distributor according to an embodiment of the present invention; Figure 5 This is a screenshot of the arrangement of the primary air double-core adjustable shrinkage holes in the pipeline according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the arrangement position of the electrostatic induction probe of an embodiment of the present invention; In the figure, 1-Y-type distributor; 11-adjustable baffle; 2-main pipeline; 3-branch pipeline; 4-primary air double-core adjustable shrinkage hole; 41-shrinkage hole; 5-boiler center line; 6-static induction probe; TT-type distributor. DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearer and easier to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The concept of the present invention is to provide a pulverized coal pipeline system for a double-cut garden combustion boiler and a layout method thereof, wherein the layout method of the present invention specifically includes: A pulverized coal separation node in the pulverized coal pipeline system is determined, and a Y-type distributor 1 is arranged at the pulverized coal separation node; The inlet side of the Y-type distributor 1 is connected to the main pipeline 2, and the outlet side is connected to two pulverized coal branch pipelines 3 respectively; The Y-type distributor 1 is adjusted to uniformly adjust the coal powder concentration rate entering each coal powder branch pipeline, so as to achieve uniform distribution of coal powder concentration in each coal powder branch pipeline.

[0028] By arranging a Y-type distributor 1 at the coal powder separation node between the main pipeline and the coal powder branch pipeline, the Y-type distributor 1 ensures that the coal powder can be evenly distributed from the inlet to each outlet. The inlet of the Y-type distributor 1 is connected to the coal powder main pipeline 2, and the outlets are respectively connected to two coal powder branch pipelines 3. The connection method needs to ensure good sealing to prevent coal powder leakage. By evenly distributing coal powder, coal powder waste or incomplete combustion caused by excessively high or low local concentrations can be avoided, thereby improving the utilization rate of coal powder. Evenly distributed coal powder burns more fully, which helps to reduce the emission of pollutants and achieve the goal of environmental protection and energy saving.

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, wherein the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Example 1 like Figure 3-Figure 6 As shown, this embodiment provides a method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler, and the specific implementation method is as follows.

[0031] Firstly, a pulverized coal separation node in the pulverized coal pipeline system is determined, at which a Y-type distributor 1 is arranged.

[0032] The inlet side of the Y-type distributor 1 is connected to the main pipeline 2, and the outlet side is respectively connected to two pulverized coal branch pipelines 3. By adjusting the Y-type distributor 1, the pulverized coal concentration rate entering each pulverized coal branch pipeline is uniformly adjusted to achieve uniform distribution of the pulverized coal concentration in each pulverized coal branch pipeline.

[0033] The Y-type distributor 1 is horizontally arranged between the main pipeline and the two coal powder branch pipelines 4. The horizontal arrangement is conducive to maintaining the stability of the airflow and reducing the problem of uneven distribution of coal powder caused by airflow disturbance. Each coal powder branch pipeline can obtain coal powder with a uniform concentration. At the same time, the horizontally arranged Y-type distributor 1 can reduce the risk of blockage of coal powder during the distribution process.

[0034] The Y-type distributor 1 is a double adjustable Y-type distributor. Figure 4 As shown, the inlet of the double adjustable Y-type distributor is provided with a device for converting a circular pipe to a square pipe, and the pipes on the two outlet sides are provided with a device for converting a square pipe to a circular pipe. Two adjustable baffles 11 are provided in the Y-type distributor. When the adjustable baffles are adjusted to a set angle, the current angle is kept fixed. Among them, the length of the adjustable baffle 11 is less than the diameter of the coal powder branch pipeline, and the length is within a certain range. The length of the adjustable baffle 11 in this embodiment is equal to the radius of the coal powder branch pipeline.

[0035] The two adjustable baffles inside the Y-type distributor 1 are made of high-strength, corrosion-resistant special alloy materials, such as ceramics. This material can not only maintain stable performance in an environment where it is in contact with coal powder for a long time, but also has excellent wear resistance, which greatly extends the service life of the baffle. The number of Y-type distributors 1 is symmetrical about the center line 5 of the boiler. The position and number of branch pipes 3 are symmetrical about the center line 5 of the boiler.

[0036] The adjustment mechanism of the adjustable baffle 11 is carefully designed and has high-precision angle control capability. Remote precision adjustment can be achieved through an advanced electric drive system or hydraulic drive system, and the operator can easily adjust the baffle angle in the control room according to real-time monitoring data. In addition, the adjustment system has a self-locking function. When the adjustable baffle is adjusted to the set angle, it can be double-protected by a precise mechanical locking device and an electronic locking signal to ensure that the baffle is firmly maintained at the current angle, and the angle will not change due to the impact of coal powder flow or slight vibration of the system.

[0037] The length of the adjustable baffle 11 has been strictly calculated and optimized. The design that is smaller than the diameter of the coal powder branch pipe ensures that the coal powder can flow smoothly when passing through the distributor, avoiding the problem of coal powder blockage or excessive flow resistance caused by the baffle being too long. At the same time, the edge of the baffle adopts a streamlined design, which further reduces the resistance and wear during the flow of coal powder.

[0038] In order to better meet the coal powder distribution requirements under different working conditions, the adjustable baffle 11 can also be quickly replaced and adjusted according to actual conditions. For example, when the parameters such as coal powder particle size and humidity change, baffles of different specifications can be selected for replacement to ensure that the distributor can always achieve the best coal powder distribution effect.

[0039] In addition, a special anti-stick coating is coated on the surface of the adjustable baffle 11. This coating has extremely low surface energy, which can effectively prevent coal powder from adhering to the baffle, keep the baffle surface clean, and reduce the occurrence of situations where the baffle adjustment accuracy and coal powder distribution effect are affected by coal powder accumulation. At the same time, the coating also has good insulation properties to avoid safety hazards caused by static electricity accumulation.

[0040] A primary air double-core adjustable shrinkage hole 4 is also arranged at the vertical section of each pulverized coal branch pipeline to adjust the pulverized coal wind pressure balance in the pulverized coal branch pipeline 3. Figure 5 shown.

[0041] The primary air double-core adjustable shrinkage hole 4 is made of high-quality wear-resistant materials and can withstand the high-speed scouring and long-term wear of the coal powder airflow. Its unique double-core structural design makes the coal powder air pressure balance adjustment in the coal powder branch pipeline more accurate and stable.

[0042] When the coal powder flows in the branch pipeline, the primary air double-core adjustable shrinkage hole can dynamically adjust the opening of the shrinkage hole 41 according to the real-time operating status of the system. By accurately controlling the passing area of ​​the coal powder airflow, the coal powder air pressure can be finely adjusted. This adjustment capability can not only ensure that the coal powder air pressure in each coal powder branch pipeline remains balanced, but also adapt to the coal powder transportation needs under different working conditions.

[0043] During the adjustment process, the double core shrinkage holes of the primary air double core adjustable shrinkage holes are adjusted 41 times, providing operators with more adjustment means and flexibility. For example, in some cases, the wind pressure can be fine-tuned by adjusting the opening of one core, while the other core remains in a relatively stable state to maintain the overall system balance.

[0044] In order to improve the accuracy and response speed of regulation, the primary air double-core adjustable shrinkage hole is also equipped with advanced sensors and control systems. The sensor can monitor the wind pressure changes in the coal powder branch pipeline in real time and feed the data back to the control system. The control system makes decisions quickly based on the preset algorithms and strategies, and automatically adjusts the opening of the shrinkage hole to achieve rapid balance and regulation of coal powder air pressure.

[0045] In addition, the compact design of the primary air double-core adjustable shrinkage hole enables it to be easily installed in the vertical section of the coal powder branch pipeline without taking up too much space. At the same time, in daily maintenance, operators can check, clean and adjust the shrinkage hole with simple tools and operations to ensure that it is always in good working condition.

[0046] The double-core adjustable shrinkage hole is also equipped with a remote control actuator, which is used to control the opening of the double-core adjustable shrinkage hole to adjust the coal powder air pressure balance in the coal powder branch pipeline when adjusting the coal powder concentration and speed in the pipeline.

[0047] The remote control actuator is connected to a DCS distributed control system or a programmable logic controller, and the remote control actuator of the Y-type distributor 1 is controlled and adjusted through a preset algorithm and real-time data feedback until the optimal air-powder ratio and flow rate are achieved.

[0048] An electrostatic induction probe 6 is also installed on the straight pipe section of the downstream coal powder branch pipeline of the double-core adjustable shrinkage hole. The electrostatic induction probe is used to monitor the primary air velocity and coal powder concentration in each coal powder branch pipeline in real time. Figure 6 shown.

[0049] When the deviation of the primary wind speed of the double-cut circle on the same layer detected by the electrostatic induction probe exceeds the first set threshold, or the deviation of the coal powder concentration exceeds the second set threshold, the Y-type distributor and / or the double-core adjustable shrinkage hole are adjusted to achieve the balance of wind speed and coal powder concentration in each coal powder branch pipeline. For example, when the deviation of the primary wind speed of the double-cut circle octagon on the same layer exceeds 10% and the deviation of the coal powder concentration exceeds 20%, the coal powder distributor and the adjustable shrinkage hole are adjusted.

[0050] The primary air velocity and coal powder concentration in each coal powder branch pipeline are monitored in real time through the electrostatic induction probe, and the primary air velocity deviation and coal powder concentration deviation of the double-tangent circle in the same layer can be found in time. When the deviation exceeds the set threshold, the Y-type distributor and / or the double-core adjustable shrinkage hole are adjusted to achieve the balance of the air velocity and coal powder concentration of each coal powder branch pipeline. This can ensure that the coal powder is burned more fully during the combustion process, improve the combustion efficiency, and reduce energy waste.

[0051] Balanced wind speed and pulverized coal concentration help maintain a stable combustion process. When the parameters of each pulverized coal branch pipeline are inconsistent, it may lead to unstable combustion, flame fluctuations, furnace pressure changes and other problems. By adjusting the parameters to keep the wind speed and pulverized coal concentration of each branch pipeline balanced, the stability of combustion can be improved, damage to equipment can be reduced, and the service life of the equipment can be extended.

[0052] In addition, mutually perpendicular measuring holes are provided at the vertical section of the downstream coal powder branch pipeline where the electrostatic induction probe is located. The inner diameter of the measuring holes ranges from 45 to 55 mm. The measuring holes are used to test the primary wind speed and coal powder concentration of the coal powder branch pipeline and calibrate the monitoring results generated by the electrostatic induction probe. In this embodiment, the inner diameter of the measuring hole is 50 mm.

[0053] Regular or irregular actual measurement through the measuring hole can be used to calibrate and calibrate the electrostatic induction probe. This helps to eliminate the measurement deviation caused by long-term use, environmental changes and other factors of the probe, and ensure the accuracy and consistency of the monitoring data. Combining the dual monitoring methods of the electrostatic induction probe and the measuring hole, a comprehensive monitoring of the flow state of the coal powder branch pipeline can be formed. When the electrostatic induction probe fails or is abnormal, the data from the measuring hole can be used as a backup or reference to ensure that the system can operate continuously and stably.

[0054] In addition, as another implementation method in this embodiment, explosion-proof devices such as explosion-proof valves and explosion-proof disks are installed in the coal powder pipeline system to prevent coal powder explosion accidents. At the same time, fire alarm systems and fire extinguishing devices are set to improve the safety of the system.

[0055] Regular inspection and maintenance of the pulverized coal pipeline system to ensure the integrity and reliability of the equipment. The inspection content includes the sealing of the pipeline, the operating status of the equipment, the accuracy of the sensor, etc., to promptly discover and eliminate potential safety hazards.

[0056] Example 2 This embodiment provides a pulverized coal pipeline system for a double-cut garden combustion boiler, which adopts the pulverized coal pipeline system layout method for a double-cut garden combustion boiler mentioned in the above embodiment 1, including multiple main pipelines and a plurality of pulverized coal branch pipelines; A pulverized coal separation node is provided between the main pipeline and the two pulverized coal branch pipelines, and a Y-type distributor 1 is arranged at the pulverized coal separation node, the inlet side of the Y-type distributor 1 is connected to the main pipeline 2, and the outlet side is connected to the two pulverized coal branch pipelines 3 respectively; The Y-type distributor is adjusted to uniformly adjust the coal powder concentration speed entering each coal powder branch pipeline, thereby achieving uniform distribution of coal powder concentration in each coal powder branch pipeline.

[0057] The inlet side of the main pipeline 2 is connected to the coal mill, and the outlet side is connected to the inlet side of the Y-type distributor; the two outlet sides of the Y-type distributor 1 are respectively connected to two pulverized coal branch pipelines 3.

[0058] The outlet sides of the pulverized coal branch pipelines are connected to the burners to transfer the pulverized coal to the burners for combustion. Each pulverized coal branch pipeline has a vertical section. The vertical section of the pulverized coal branch pipeline is also equipped with a primary air double-core adjustable shrinkage hole to adjust the pulverized coal wind pressure balance in the pulverized coal branch pipeline.

[0059] In addition, an electrostatic induction probe is installed on the straight pipe section of the downstream pulverized coal branch pipeline of the double-core adjustable shrinkage hole 4, and the electrostatic induction probe is used to monitor the primary air velocity and pulverized coal concentration in each pulverized coal branch pipeline in real time.

[0060] When the primary wind speed deviation of the double-cut circle on the same layer detected by the electrostatic induction probe exceeds the first set threshold, or the coal powder concentration deviation exceeds the second set threshold, the Y-type distributor 1 and / or the double-core adjustable shrinkage hole 4 are adjusted to achieve a balance between the wind speed and coal powder concentration of each coal powder branch pipeline.

[0061] In addition, mutually perpendicular measuring holes are provided at the vertical section of the downstream coal powder branch pipeline where the electrostatic induction probe is located. The inner diameter of the measuring holes ranges from 45 to 55 mm. The measuring holes are used to test the primary wind speed and coal powder concentration of the coal powder branch pipeline and calibrate the monitoring results generated by the electrostatic induction probe.

[0062] Example 3 This embodiment also provides a simulation method for the arrangement method of the pulverized coal pipeline system of the double-cut garden combustion boiler in Example 1, and provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in the terminal device for storing programs and data. It can be understood that the computer-readable storage medium here can include both the built-in storage medium in the terminal device and the extended storage medium supported by the terminal device, and can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, device or device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that more specific examples of computer-readable storage media herein (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0063] Computer readable storage media also include data signals propagated in baseband or as part of a carrier wave, which carry readable program codes. Such propagated data signals can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The readable storage medium can also be any readable medium other than a readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, device, or device. The program code contained on the readable storage medium can be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the above.

[0064] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0065] The storage medium can store relevant instructions and steps regarding the method for arranging the pulverized coal pipeline system of the double-cut garden combustion boiler in design embodiment 1.

[0066] Example 4 Another embodiment of the present invention provides an electronic device for executing the instructions in the storage medium in Embodiment 3 to complete the design simulation process of the layout of the pulverized coal pipeline system of the double-cut garden combustion boiler.

[0067] The computer device may be a desktop computer, a notebook computer, a PDA, a cloud server, etc. The computer device includes a processor, a memory, and a computer program stored in the memory and executable on the processor.

[0068] The processor may be a central processing unit (CPU), or other general-purpose processors, central processing units, graphics processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, data processing logic based on quantum computing, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0069] The memory can be an internal storage unit of a computer device, such as a hard disk or memory of a computer device. The memory can also be an external storage device of a computer device, such as a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), etc. equipped on the computer device.

[0070] Furthermore, the memory may include both an internal storage unit of a computer device and an external storage device. The memory is used to store computer programs and other programs and data required by the computer device. The memory may also be used to temporarily store data that has been output or is to be output.

[0071] Any reference to a memory, database or other medium used in the embodiments provided in this application may include at least one of a non-volatile and a volatile memory. Non-volatile memory may include a read-only memory (ROM), a magnetic tape, a floppy disk, a flash memory, an optical memory, a high-density embedded non-volatile memory, a resistive random access memory (ReRAM), a magnetic random access memory (MRAM), a ferroelectric random access memory (FRAM), a phase change memory (PCM), a graphene memory, etc. Volatile memory may include a random access memory (RAM) or an external cache memory, etc. As an illustration and not limitation, RAM may be in various forms, such as a static random access memory (SRAM) or a dynamic random access memory (DRAM), etc.

Claims

1. A method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler, characterized in that: include: determining a pulverized coal separation node in the pulverized coal pipeline system, at which a Y-type distributor is arranged; The inlet side of the Y-type distributor is connected to the main pipeline, and the outlet side is connected to two coal powder branch pipelines respectively; The pulverized coal concentration rate entering each pulverized coal branch pipeline is uniformly adjusted by adjusting the Y-type distributor, so that the pulverized coal concentration of each pulverized coal branch pipeline is evenly distributed.

2. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to claim 1, characterized in that: The Y-type distributor is horizontally arranged between the main pipeline and the two coal powder branch pipelines; the Y-type distributor is a double-adjustable Y-type distributor, and two adjustable baffles are arranged in the double-adjustable Y-type distributor. When the adjustable baffle is adjusted to a set angle, the current angle is kept fixed, and the length of the adjustable baffle is smaller than the diameter of the coal powder branch pipeline.

3. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to claim 1, characterized in that: A primary air double-core adjustable shrinkage hole is also arranged at the vertical section of each coal powder branch pipeline, which is used to adjust the coal powder wind pressure balance in the coal powder branch pipeline; the double-core adjustable shrinkage hole is also configured with a remote control actuator, which is used to control the opening of the double-core adjustable shrinkage hole to adjust the coal powder wind pressure balance in the coal powder branch pipeline when adjusting the coal powder concentration and speed in the pipeline.

4. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to claim 3 is characterized in that: An electrostatic induction probe is also installed on the straight pipe section of the downstream pulverized coal branch pipeline of the double-core adjustable shrinkage hole. The electrostatic induction probe is used to monitor the primary air velocity and pulverized coal concentration in each pulverized coal branch pipeline in real time.

5. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to claim 4, characterized in that: When the primary wind speed deviation of the double-cut circle on the same layer detected by the electrostatic induction probe exceeds the first set threshold, or the coal powder concentration deviation exceeds the second set threshold, the Y-type distributor and / or the double-core adjustable shrinkage hole are adjusted to achieve a balance between the wind speed and coal powder concentration of each coal powder branch pipeline.

6. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to claim 3, characterized in that: Connect the remote control actuator to the DCS distributed control system or programmable logic controller, and control and adjust the Y-type distributor and remote control actuator through preset algorithms and real-time data feedback until the optimal air-powder ratio and flow rate are achieved.

7. The method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler according to any one of claim 4, characterized in that: The vertical section of the downstream coal powder branch pipeline where the electrostatic induction probe is located is also provided with mutually perpendicular measuring holes, the inner diameter of which ranges from 45 to 55 mm. The measuring holes are used to test the primary wind speed and coal powder concentration of the coal powder branch pipeline and calibrate the monitoring results generated by the electrostatic induction probe.

8. A double-tangential garden combustion boiler pulverized coal pipeline system, using the double-tangential garden combustion boiler pulverized coal pipeline system layout method according to any one of claims 1 to 7, characterized in that: It includes multiple main pipelines and several pulverized coal branch pipelines; A pulverized coal separation node is provided between the main pipeline and the two pulverized coal branch pipelines, and a Y-type distributor is arranged at the pulverized coal separation node; the inlet side of the Y-type distributor is connected to the main pipeline, and the outlet side is respectively connected to the two pulverized coal branch pipelines; The Y-type distributor is adjusted to uniformly adjust the coal powder concentration speed entering each coal powder branch pipeline, thereby achieving uniform distribution of coal powder concentration in each coal powder branch pipeline.

9. A computer-readable storage medium storing one or more programs, characterized in that: The one or more programs include instructions, which, when executed by a computing device, enable the computing device to simulate and execute the method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler as described in any one of claims 1 to 7.

10. A computing device, characterized in that include: One or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include simulation steps for executing the method for arranging a pulverized coal pipeline system for a double-cut garden combustion boiler as described in any one of claims 1 to 7.

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