Soot blower control method and device, soot blower, electronic equipment and storage medium

Abstract

The application provides a soot blower control method and device, a soot blower, electronic equipment and a storage medium, and belongs to the technical field of soot blowing. The method comprises the following steps: acquiring a first temperature and a first pressure of water vapor in a soot blower pipeline; determining a first thermodynamic state of the water vapor in the soot blower pipeline based on the first temperature and the first pressure; and controlling opening and closing of a drain valve of the soot blower pipeline and starting and stopping of the soot blower based on the first thermodynamic state. According to the soot blowing control method, the temperature and the pressure of the water vapor in the soot blower pipeline during the pipe warming process are monitored, the state of the water vapor in the soot blower pipeline can be determined in time, the pipe warming is determined to be completed or not according to the state of the water vapor, the pipe warming can be stopped in time, unnecessary waste of water vapor during the pipe warming is reduced, and steam heat energy is saved while the pipe warming effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of soot blowing technology, and in particular to a soot blower control method, device, soot blower, electronic device and storage medium. Background Technology

[0002] Soot blowers are important auxiliary equipment for power plant boilers and air preheaters. Soot blowing is currently a conventional method for treating coking and ash accumulation on the pipes and walls of boilers and air preheaters, and is a necessary measure to improve the safe, stable and economical operation of boilers and air preheaters.

[0003] Currently, the main soot blowing equipment for power plant boilers includes steam soot blowers, sonic soot blowers, and shock wave soot blowers. Among them, steam soot blowers are the most widely used and have mature technology. The principle of a steam soot blower is to use steam as the blowing medium to form a high-speed jet at the nozzle of the soot blower, which washes away the ash and other accumulated ash on the boiler and air preheater heating surfaces. When the impact force of the steam jet is greater than the interaction force between ash particles, or between ash particles and the tube wall, the ash particles fall off, thereby achieving the purpose of removing accumulated ash and slag.

[0004] Preheating the sootblower pipes before steam soot blowing is essential for safety. Preheating and draining prevent the sootblower steam from containing liquid water, which has much greater kinetic energy than steam and would exacerbate wear and tear on the heated pipes. Currently, the sootblower warm-up time is usually set manually based on experience. For example, a power plant requires a minimum warm-up time of 20 minutes, and at least 40 minutes in winter, while the drain temperature must not be lower than 230℃. Typically, the warm-up time allows for excessive margins, far exceeding actual needs. Since the sootblower steam comes from the boiler equipment itself, excessively long warm-up times increase steam loss and cause significant waste.

[0005] During the warm-up process, controlling the working status of each component of the sootblower to minimize steam waste during the warm-up process while meeting the sootblowing requirements is an urgent problem to be solved. Summary of the Invention

[0006] This invention provides a sootblower control method, device, sootblower, electronic device, and storage medium to solve the problem of serious steam waste in the warm-up process of sootblowers in the prior art, and to achieve precise control of the warm-up process while meeting sootblowing requirements, thereby reducing the waste of water vapor in the warm-up process.

[0007] This invention provides a sootblower control method, comprising:

[0008] Obtain the first temperature and first pressure of the water vapor in the sootblower pipe;

[0009] Based on the first temperature and the first pressure, the first thermodynamic state of the water vapor in the sootblower pipe is determined;

[0010] Based on the first thermodynamic state, the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower are controlled.

[0011] According to a sootblower control method provided by the present invention, the step of controlling the opening and closing of the sootblower pipe drain valve and the start and stop of the sootblower based on the first thermodynamic state includes:

[0012] When the first thermodynamic state is superheated steam, the drain valve of the sootblower pipe is closed and the sootblower is opened.

[0013] According to a sootblower control method provided by the present invention, the step of controlling the sootblower pipe drain valve to close and controlling the sootblower to open includes: determining that the difference between the first temperature and the temperature corresponding to the dry saturated steam state of water vapor under the first pressure is greater than a first preset value, controlling the sootblower pipe drain valve to close, and controlling the sootblower valve to open.

[0014] According to a sootblower control method provided by the present invention, after controlling the sootblower to open, the method further includes:

[0015] Obtain the second temperature and second pressure of the water vapor in the sootblower pipe;

[0016] Based on the second temperature and the second pressure, the second thermodynamic state of the water vapor in the sootblower pipe is determined;

[0017] When the second thermodynamic state is wet steam or dry saturated steam, the drain valve of the sootblower pipe is opened and the sootblower is shut down.

[0018] According to a sootblower control method provided by the present invention, the step of controlling the opening and closing of the sootblower pipe drain valve and the start and stop of the sootblower based on the first thermodynamic state includes:

[0019] When the first thermodynamic state is wet steam or dry saturated steam, the drain valve of the sootblower pipe is kept open, and the sootblower is kept shut off.

[0020] According to a sootblower control method provided by the present invention, the temperature and pressure of water vapor in the sootblower pipe are acquired in real time;

[0021] Based on the real-time temperature and pressure of water vapor, the real-time thermodynamic state of water vapor is determined;

[0022] The real-time temperature and pressure of the water vapor, as well as the real-time thermodynamic state of the water vapor, are displayed on a visual interface.

[0023] The present invention also provides a soot blower control device, comprising:

[0024] The acquisition module is used to acquire the first temperature and first pressure of water vapor in the sootblower pipe;

[0025] The first processing module is used to determine the first thermodynamic state of water vapor in the sootblower pipe based on the first temperature and the first pressure.

[0026] The second processing module is used to control the opening and closing of the drain valve of the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

[0027] The present invention also provides a soot blower, including a soot blower pipe, a soot blower body, a temperature sensor and a pressure sensor;

[0028] One end of the sootblower pipe is connected to a steam source. The sootblower pipe is connected to the sootblower body. The sootblower body is equipped with a sootblower valve. The sootblower pipe is also equipped with a drain valve. The temperature sensor and the pressure sensor are both installed inside the sootblower pipe.

[0029] It also includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The temperature sensor, the pressure sensor, the drain valve, and the sootblower valve are all electrically connected to the processor. When the processor executes the program, it implements any of the sootblower control methods described above.

[0030] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the sootblower control method as described above.

[0031] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the sootblower control method as described above.

[0032] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the sootblower control method as described above.

[0033] The sootblower control method, device, sootblower, electronic equipment, and storage medium provided by this invention can monitor the temperature and pressure of water vapor in the sootblower pipe during the warm-up process, and thus determine the state of water vapor in the sootblower pipe in a timely manner. Based on the state of water vapor, it can determine whether the warm-up is complete and stop the warm-up in time, reducing unnecessary waste of warm-up water vapor and saving steam heat energy while ensuring the warm-up effect. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a flowchart illustrating the soot blower control method provided by the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the soot blower control device provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the soot blower provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0039] Figure label:

[0040] 310: Sootblower pipe; 311: Temperature sensor; 312: Pressure sensor; 313: Drain valve; 314: Drain pipe; 320: Sootblower body; 330: Processor. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] The following is combined with Figures 1-4 The present invention describes a sootblower control method, apparatus, sootblower, electronic device, and storage medium.

[0043] Soot blowers are important auxiliary equipment for power plant boilers and air preheaters. Soot blowing is a conventional method for treating coking and ash accumulation on the pipes and walls of boilers and air preheaters, and is a necessary measure to improve the safe, stable, and economical operation of boilers and air preheaters. Taking boilers as an example, during boiler operation, regular blowing of the heating surfaces can prevent ash accumulation, coking, and corrosion, thereby preventing uneven heating and tube overheating caused by ash and coking, and ensuring the normal operation of the boiler.

[0044] Steam soot blowers are the primary equipment used for soot blowing in power plant boilers and similar applications. The principle of a steam soot blower is to utilize steam as the blowing medium, forming a high-speed jet at the nozzle of the soot blower. This jet washes away accumulated ash and other deposits from the boiler and air preheater heating surfaces. When the impact force of the steam jet exceeds the interaction force between ash particles, or between ash particles and the pipe wall, the ash particles detach, thus achieving the purpose of removing accumulated ash and slag.

[0045] A steam sootblower typically consists of sootblower piping and the sootblower body. The sootblower piping connects to a steam source and supplies steam to the sootblower body for warming up the pipes or blowing away soot. A shut-off valve can be installed at the end of the sootblower piping connected to the steam source to control the steam input. A drain valve is also installed on the sootblower piping; during the warm-up process, liquid water can be discharged through the drain valve.

[0046] The sootblower body may include a sootblower valve and other actuating mechanisms. When the sootblower valve is open and the actuating mechanisms are activated, the sootblower body can use steam to blow soot. The sootblower body may also be equipped with a regulating valve, which can be used to adjust the pressure of the airflow blown out by the sootblower.

[0047] Before sootblowing begins, the steam sootblower needs to be warmed up. In this case, the shut-off valve of the sootblower pipeline can be opened. Once the pipeline temperature reaches the set value or the set warm-up time is reached, the drain valve should be closed, and the warm-up is complete. During sootblowing, the pressure of the sootblowing gas flow can be adjusted using the regulating valve to maintain the required pressure value. After the pressure stabilizes, the sootblower is put into operation. Sootblowing operations are performed on the boiler wall or air preheater according to the set time and sequence. After the sootblowing program is completed, the shut-off valve and regulating valve are closed, and other operating mechanisms cease operation.

[0048] It should be noted that when water vapor enters the sootblower pipes and other pipelines, the water vapor will condense into liquid water due to the low temperature of the sootblower pipes. This can easily lead to the mixing of liquid water with the sootblowing water vapor. Since liquid water has much greater kinetic energy than steam, it will exacerbate the blown-off wear on the heated pipe surfaces.

[0049] Generally speaking, the steam used for soot blowing comes from high-temperature and high-pressure water vapor such as steam extracted from steam turbines or reheat steam. After being de-cooled and depressurized, it is sent into the soot blower pipeline for soot blowing.

[0050] Taking a power plant as an example, the steam for boiler soot blowing originates from the main steam pipeline after the three-stage desuperheater at the rear screen outlet. After being desuperheated and depressurized to 2.5MPa-3MPa, it is then fed into the sootblower pipeline. From there, it passes through the valves of the sootblower, where the gas pressure is controlled at 1.2MPa-1.5MPa for soot blowing. Typically, the steam used for soot blowing has a lower pressure and temperature than its source gas. After passing through valves and pipelines, the steam inevitably experiences heat and energy losses.

[0051] Currently, the warm-up time for soot blowing systems is usually set manually based on experience. For example, at a certain power plant, to ensure effective warm-up, the pre-blowing warm-up time must be no less than 20 minutes, and no less than 40 minutes in winter. However, these set warm-up times are often too long, leading to a waste of steam and heat.

[0052] The sootblower control method provided in this invention is applied to the sootblower warm-up process. By monitoring the thermodynamic state of water vapor in the sootblower pipe during warm-up, the degree of warm-up can be analyzed, and warm-up can be stopped in a timely manner when the expected effect is achieved, reducing the waste of steam and energy. In contrast, the original control method only monitored temperature, which could not completely guarantee the end of the warm-up process or the absence of liquid water in the pipe, as temperature alone is insufficient to determine the steam state. Furthermore, controlling the warm-up process based on empirical values ​​and warm-up time introduces excessive safety margins, leading to the waste of energy and water vapor during the warm-up process.

[0053] The sootblower control method of this invention can be executed by a processor, and in some embodiments, it can also be executed by a server. The specific type of the execution subject is not limited here. The following description uses a processor as an example to illustrate the sootblower control method of this invention.

[0054] like Figure 1 As shown, the sootblower control method of this embodiment mainly includes steps 110, 120 and 130.

[0055] Step 110: Obtain the first temperature and first pressure of the water vapor in the sootblower pipe.

[0056] Understandably, the initial temperature can be obtained by a temperature sensor installed in the sootblower duct.

[0057] Temperature sensors can be installed at the end of the sootblower duct to obtain the temperature value at that location. According to heat transfer theory, the temperature at the end of the sootblower duct is the lowest in the entire warm-up system temperature field. If the temperature and pressure at this critical location meet the warm-up requirements, then other parts will also meet the requirements.

[0058] Understandably, multiple temperature sensors can be installed, and these sensors can be placed at key locations, such as the connection point between the sootblower pipe and the sootblower body.

[0059] When a single temperature sensor is installed, the first temperature is the data detected by that sensor. When multiple temperature sensors are installed, considering areas where the pipe has not been fully warmed up, the first temperature can be the minimum value among the data detected by the multiple temperature sensors.

[0060] Understandably, pressure sensors can be installed at the end of the sootblower pipe to obtain pressure values ​​at that end location, thereby ensuring that pressure at all points within the sootblower pipe can be collected.

[0061] Understandably, multiple pressure sensors can be installed, positioned at key locations consistent with the temperature measurement points. This means a pressure sensor is also installed at the location of each temperature sensor. The state of the steam at that location can be determined by analyzing the data from both the temperature and pressure sensors at the same location.

[0062] Understandably, with multiple temperature sensors in place, the state of the steam can be determined based on the temperature and pressure measurements at the location with the lowest temperature reading.

[0063] Step 120: Determine the first thermodynamic state of water vapor in the sootblower pipe based on the first temperature and the first pressure.

[0064] It should be noted that in thermodynamics, when a liquid evaporates in a confined, enclosed space, liquid molecules pass through the liquid surface and enter the space above, becoming vapor molecules.

[0065] Because the vapor molecules are in a state of turbulent thermal motion, they collide with each other, as well as with the container walls and the liquid surface. When colliding with the liquid surface, some molecules are attracted by the liquid molecules and return to the liquid to become liquid molecules again.

[0066] At the start of evaporation, the number of molecules entering the space exceeds the number returning to the liquid. As evaporation continues, the density of vapor molecules in the space increases, thus increasing the number of molecules returning to the liquid. When the number of molecules entering the space per unit time equals the number returning to the liquid, evaporation and condensation are in dynamic equilibrium. At this point, although evaporation and condensation are still occurring, the density of vapor molecules in the space no longer increases; this state is called saturation.

[0067] A liquid in a saturated state is called a saturated liquid, and its corresponding steam is saturated steam. However, initially it is only wet saturated steam. It becomes dry saturated steam only after all the moisture in the steam has evaporated. The temperature of steam does not increase during the process of going from unsaturated to wet saturated and then to dry saturated. After it becomes dry saturated, the temperature will rise if it is heated further, and it will become superheated steam.

[0068] It should be noted that the thermodynamic states of water vapor include wet saturated steam (i.e., wet steam), dry saturated steam, and superheated steam.

[0069] It is understandable that the water vapor entering the sootblower pipes, after passing through the pipes and valves, easily forms wet steam and dry saturated steam due to the drop in temperature and pressure, and is mixed with liquid water.

[0070] In this embodiment, the state of the water vapor is determined by monitoring the first temperature and first pressure of the water vapor in the sootblower pipe.

[0071] Understandably, the state of water vapor at a first temperature and first pressure can be determined based on the thermodynamic property charts of water and water vapor. These thermodynamic property charts can be digitized in advance and stored in memory for easy retrieval.

[0072] It should be noted that the charts on the thermodynamic properties of water and steam mainly introduce the thermodynamic properties of water and steam commonly used in steam power engineering. These include four tables: thermodynamic parameters of saturated water and saturated steam (divided into two tables arranged by temperature and pressure), thermodynamic parameters of unsaturated water and superheated steam, and thermodynamic parameters of water and steam at supercritical pressure; as well as enthalpy-entropy diagrams for water and steam. All data are calculated according to the industrial IFC formulas confirmed by the International Conference on Steam Properties. The enthalpy-entropy diagrams are also computer-generated and can be displayed in a visual interface.

[0073] Step 130: Based on the first thermodynamic state, control the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower.

[0074] In some embodiments, when the first thermodynamic state is a superheated steam state, the drain valve of the sootblower pipe is controlled to close, and the sootblower valve is controlled to open.

[0075] In this case, the steam in the sootblower pipe is superheated steam, and the sootblower pipe has been fully warmed up. The sootblower valve can be opened to supply steam to the sootblower body for warming up.

[0076] In some embodiments, controlling the sootblower pipe drain valve to close and controlling the sootblower valve to open includes: determining that the difference between a first temperature and the temperature corresponding to the state of dry saturated steam under a first pressure is greater than a first preset value, controlling the sootblower pipe drain valve to close, and controlling the sootblower to open.

[0077] In other words, soot blowing begins when the water vapor in the soot blower pipe reaches a first preset superheat value.

[0078] The first preset value can be set according to different types of sootblower pipes and valve types. For example, the first preset value can be 40℃-60℃, and there is no limit to the specific value of the first preset value.

[0079] In this case, when the warm-up is completed, the water vapor in the sootblower pipe has a certain degree of superheat, that is, there is a certain superheat margin, which can avoid the water vapor state after the warm-up being unsatisfactory due to sensor measurement errors or other factors, thereby ensuring the stability of the sootblowing process.

[0080] In some embodiments, controlling the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower based on a first thermodynamic state includes: keeping the drain valve in the sootblower pipe open and keeping the sootblower shut down when the first thermodynamic state is a wet steam state or a dry saturated steam state.

[0081] Understandably, if the steam in the sootblower pipe is not superheated steam, it is still necessary to continue warming the sootblower pipe to ensure the warming effect.

[0082] In this situation, keeping the drain valve open allows the condensate to drain, while shutting down the sootblower and closing its valve keeps it out of operation.

[0083] Understandably, the warm-up process is complete when the steam in the sootblower pipe is superheated. In this case, promptly initiating the sootblowing process reduces steam waste and saves energy.

[0084] According to the sootblower control method provided in the embodiments of the present invention, by monitoring the temperature and pressure of water vapor in the sootblower pipe during the warming process, the state of water vapor in the sootblower pipe can be determined in a timely manner. Based on the state of water vapor, it can be determined whether the warming is completed and the warming can be stopped in time, reducing unnecessary waste of warming water vapor and saving steam heat energy while ensuring the warming effect.

[0085] In some embodiments, after the sootblower is turned on, it can begin soot blowing. To ensure that the sootblower is not affected by liquid water during the soot blowing process, the sootblower control method of this embodiment further includes: acquiring a second temperature and a second pressure of water vapor in the sootblower pipe.

[0086] In other words, the state of water vapor in the sootblower pipes can be continuously monitored during the sootblowing process to ensure that the water vapor during the sootblowing process is all superheated steam.

[0087] Understandably, the second temperature and second pressure are also obtained through temperature and pressure sensors installed in the same location.

[0088] In this case, the second thermodynamic state of water vapor in the sootblower pipe can be determined based on the second temperature and the second pressure.

[0089] When the second thermodynamic state is wet steam or dry saturated steam, the drain valve of the sootblower pipeline is opened and the sootblower valve is closed.

[0090] It is understandable that when the second thermodynamic state is wet steam or dry saturated steam, liquid water may be present in the sootblower pipe, which may easily damage the parts to be sootblown during the sootblowing process.

[0091] In this situation, opening the drain valve in the sootblower pipe can promptly drain any liquid water that may be present, while closing the sootblower valve can prevent liquid water from being blown onto the parts to be blown, thus avoiding damage to the parts to be blown.

[0092] Throughout the soot blowing process, the water vapor pressure and temperature in the soot blower pipe can be monitored to ensure that the water vapor remains in the superheated steam zone, thus avoiding water carryover from the steam and erosion of the parts to be blown, which could damage the parts.

[0093] In some embodiments, the sootblower control method of the present invention further includes real-time acquisition of the temperature and pressure of water vapor in the sootblower pipe.

[0094] In this case, the real-time thermodynamic state of water vapor can be determined based on the temperature and pressure of water vapor at the same measurement location, and the real-time temperature and pressure of water vapor and the real-time thermodynamic state of water vapor can be displayed on a visualization interface.

[0095] Understandably, by reflecting the real-time parameters of water vapor in the sootblower pipes on a visualization interface, the properties of water vapor throughout the sootblowing process can be visually monitored by operators, allowing for a more intuitive understanding of the current state of the water vapor.

[0096] In some embodiments, a flow meter can be installed in the sootblower duct to obtain the steam flow rate. Alternatively, the steam supply flow rate can be obtained directly from the steam source.

[0097] In this case, the energy consumption Q during the entire soot blowing process can be obtained based on parameters such as soot blowing time, water vapor temperature, and pressure. The calculation formula is Q = q × h × t, where q is the water vapor flow rate, h is the water vapor enthalpy, and t is the soot blowing time.

[0098] In some embodiments, when the entire soot blowing process is carried out in an unsteady state, the energy consumption Q is calculated as follows: Q=∫q(t)×h(t)dt.

[0099] Understandably, data such as steam parameters and steam flow rate during the entire soot blowing process can be used to optimize and adjust the entire process later. For example, under the same operating conditions, comparing the energy consumption and time consumption of different operating procedures to complete the soot blowing task can help optimize all subsequent soot blowing processes under the same conditions, or at least provide suggestions for optimization directions.

[0100] The soot blower control device provided by the present invention is described below. The soot blower control device described below can be referred to in correspondence with the soot blower control method described above.

[0101] like Figure 2 As shown, the sootblower control device of this embodiment includes an acquisition module 210, a first processing module 220, and a second processing module 230.

[0102] The acquisition module 210 is used to acquire the first temperature and first pressure of water vapor in the sootblower pipe;

[0103] The first processing module 220 is used to determine the first thermodynamic state of water vapor in the sootblower pipe based on the first temperature and the first pressure.

[0104] The second processing module 230 is used to control the opening and closing of the drain valve of the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

[0105] According to the embodiments of the present invention, the sootblower control device can monitor the temperature and pressure of the water vapor in the sootblower pipe during the warming process, and can promptly determine the state of the water vapor in the sootblower pipe. Based on the state of the water vapor, it can determine whether the warming process is complete and stop the warming process in time, thereby reducing unnecessary waste of warming water vapor and saving steam heat energy while ensuring the warming effect.

[0106] In some embodiments, the second processing module 230 is further configured to control the sootblower pipe drain valve to close and control the sootblower to open when the first thermodynamic state is a superheated steam state.

[0107] In some embodiments, the second processing module 230 is further configured to determine that the difference between the first temperature and the temperature corresponding to the dry saturated steam state of water vapor under the first pressure is greater than a first preset value, control the drain valve of the sootblower pipe to close, and control the sootblower to open.

[0108] In some embodiments, the sootblower control device of the present invention further includes a third processing module, which is used to obtain a second temperature and a second pressure of water vapor in the sootblower pipe; determine a second thermodynamic state of water vapor in the sootblower pipe based on the second temperature and the second pressure; and control the opening of the drain valve of the sootblower pipe and control the sootblower to shut down when the second thermodynamic state is a wet steam state or a dry saturated steam state.

[0109] In some embodiments, the second processing module 230 is further configured to keep the drain valve of the sootblower pipe open and keep the sootblower shut down when the first thermodynamic state is wet steam or dry saturated steam.

[0110] In some embodiments, the sootblower control device of the present invention further includes a fourth processing module, which is used to acquire the temperature and pressure of water vapor in the sootblower pipe in real time; determine the real-time thermodynamic state of water vapor based on the acquired temperature and pressure of water vapor; and display the acquired temperature and pressure of water vapor and the real-time thermodynamic state of water vapor on a visualization interface.

[0111] like Figure 3 As shown, this embodiment of the invention also provides a soot blower. The soot blower of this embodiment includes a soot blower pipe 310, a soot blower body 320, a temperature sensor 311, and a pressure sensor 312.

[0112] One end of the sootblower pipe 310 is connected to a steam source. The sootblower pipe 310 is connected to the sootblower body 320. The sootblower body 320 is equipped with a sootblower valve, and the sootblower pipe 310 is also equipped with a drain valve 313. The number of sootblower bodies 320 can be set according to the usage requirements.

[0113] like Figure 3 As shown, a drain pipe 314 is installed on the soot blower pipe 310, and a drain valve 313 is installed on the drain pipe 314.

[0114] Both temperature sensor 311 and pressure sensor 312 are installed inside the sootblower duct 310. It is understood that at least one of each type of sensor is provided.

[0115] The sootblower of this embodiment further includes a memory, a processor 330, and a computer program stored in the memory and executable on the processor. The temperature sensor 311, pressure sensor 312, drain valve 313, and sootblower valve are all electrically connected to the processor 330. When the processor 330 executes the program, it implements any of the above-described sootblower control methods. The method includes: acquiring a first temperature and a first pressure of water vapor in the sootblower pipe 310; determining a first thermodynamic state of the water vapor in the sootblower pipe 310 based on the first temperature and the first pressure; and controlling the opening and closing of the drain valve 313 and the sootblower valve in the sootblower pipe 310 based on the first thermodynamic state.

[0116] According to the embodiments of the present invention, the soot blower can monitor the temperature and pressure of water vapor in the soot blower pipe 310 during the warming process, and can promptly determine the state of water vapor in the soot blower pipe. Based on the state of water vapor, it can determine whether the warming process is complete and stop the warming process in time, thereby reducing unnecessary waste of warming water vapor and saving steam heat energy while ensuring the warming effect.

[0117] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include a processor 410, a communication interface 420, a memory 430, and a communication bus 440. The processor 410, communication interface 420, and memory 430 communicate with each other via the communication bus 440. The processor 410 can call logical instructions from the memory 430 to execute a sootblower control method. This method includes: acquiring a first temperature and a first pressure of water vapor in the sootblower pipe; determining a first thermodynamic state of the water vapor in the sootblower pipe based on the first temperature and the first pressure; and controlling the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

[0118] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0119] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the sootblower control method provided by the above methods. The method includes: obtaining a first temperature and a first pressure of water vapor in the sootblower pipe; determining a first thermodynamic state of water vapor in the sootblower pipe based on the first temperature and the first pressure; and controlling the opening and closing of the drain valve of the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

[0120] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the sootblower control method provided by the above methods, the method comprising: acquiring a first temperature and a first pressure of water vapor in a sootblower pipe; determining a first thermodynamic state of water vapor in the sootblower pipe based on the first temperature and the first pressure; the first thermodynamic state being the thermodynamic state of water vapor; and controlling the opening and closing of a drain valve in the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

[0121] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soot blower control method, characterized in that, include: Obtain the first temperature and first pressure of the water vapor in the sootblower pipe; Based on the first temperature, the first pressure, and the thermodynamic property chart of water and water vapor, the first thermodynamic state of water vapor in the sootblower pipe is determined, and the thermodynamic property chart of water and water vapor is used to determine the state of water vapor at the first temperature and the first pressure. Based on the first thermodynamic state, the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower are controlled.

2. The soot blower control method according to claim 1, characterized in that, The control of the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state includes: When the first thermodynamic state is superheated steam, the drain valve of the sootblower pipe is closed and the sootblower is opened.

3. The soot blower control method according to claim 2, characterized in that, The control of closing the drain valve in the sootblower pipe and controlling the sootblower to open includes: If the difference between the first temperature and the temperature corresponding to the dry saturated steam state of water vapor under the first pressure is greater than a first preset value, the drain valve of the sootblower pipe is closed, and the sootblower is opened.

4. The soot blower control method according to claim 1, characterized in that, After controlling the soot blower to turn on, the method further includes: Obtain the second temperature and second pressure of the water vapor in the sootblower pipe; Based on the second temperature and the second pressure, the second thermodynamic state of the water vapor in the sootblower pipe is determined; When the second thermodynamic state is wet steam or dry saturated steam, the drain valve of the sootblower pipe is opened and the sootblower is shut down.

5. The soot blower control method according to claim 1, characterized in that, The control of the opening and closing of the drain valve in the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state includes: When the first thermodynamic state is wet steam or dry saturated steam, the drain valve of the sootblower pipe is kept open, and the sootblower is kept shut off.

6. The sootblower control method according to any one of claims 1-5, characterized in that, Also includes: The temperature and pressure of the water vapor in the sootblower pipe are acquired in real time. Based on the real-time temperature and pressure of water vapor, the real-time thermodynamic state of water vapor is determined; The real-time temperature and pressure of the water vapor, as well as the real-time thermodynamic state of the water vapor, are displayed on a visual interface.

7. A soot blower control device, characterized in that, include: The acquisition module is used to acquire the first temperature and first pressure of water vapor in the sootblower pipe; The first processing module is used to determine the first thermodynamic state of water vapor in the sootblower pipe based on the first temperature, the first pressure and the thermodynamic property chart of water and water vapor, wherein the thermodynamic property chart of water and water vapor is used to determine the state of water vapor at the first temperature and the first pressure. The second processing module is used to control the opening and closing of the drain valve of the sootblower pipe and the start and stop of the sootblower based on the first thermodynamic state.

8. A soot blower, characterized in that, Includes sootblower duct, sootblower body, temperature sensor and pressure sensor; One end of the sootblower pipe is connected to a steam source. The sootblower pipe is connected to the sootblower body. The sootblower body is equipped with a sootblower valve. The sootblower pipe is also equipped with a drain valve. The temperature sensor and the pressure sensor are both installed inside the sootblower pipe. It also includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the temperature sensor, the pressure sensor, the steam trap, and the soot blower valve are all electrically connected to the processor; When the processor executes the program, it implements the soot blower control method as described in any one of claims 1 to 6.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the soot blower control method as described in any one of claims 1 to 6.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the soot blower control method as described in any one of claims 1 to 6.

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