A condensate pressurization system and method

Abstract

The application provides a condensate water pressurizing system and method, belonging to the technical field of water pump design, comprising: a first end of a data processing module is connected to a condensate pump control module, and a second end of the data processing module is connected to an input end of a frequency conversion module; the data processing module is used for acquiring a rotating speed signal and a power signal of the condensate pump collected by the condensate pump control module; the data processing module is also used for obtaining a water pump rotating speed control signal based on the rotating speed signal and the power signal, and sending the water pump rotating speed control signal to the frequency conversion module; a first end of a water pump pressurizing module is connected to an output end of the frequency conversion module, and a second end of the water pump pressurizing module is connected to the condensate pump; the water pump pressurizing module is used for receiving the water pump rotating speed control signal output by the frequency conversion module, and driving the condensate pump based on the water pump rotating speed control signal. Through the cooperative control of the modules, the rotating speed and the pressure of the primary and secondary shaftless pumps are dynamically adjusted based on real-time working conditions, so that the anti-cavitation capacity of the condensate water system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pump design, and in particular to a condensate pressurization system and method. BACKGROUND

[0002] In the operation process of a steam power system, the condensate system undertakes the important task of continuously pumping out the condensate in the condenser, pressurizing, and delivering it to the feedwater system, to ensure the efficient operation of the steam cycle and the normal operation of the power system. However, with the increase in system complexity, especially in compact space scenarios such as marine power generation equipment or ship power systems, the stable operation of the condensate pump faces severe challenges.

[0003] In these scenarios, the condensate is close to saturation state under low temperature and high vacuum environment, and the filling height between the condenser and the condensate pump in the system is limited. This arrangement restriction causes the inlet pressure of the condensate pump to be insufficient, thereby increasing the risk of cavitation in the pump.

[0004] The prior art generally installs a pressurization device at the front end of the condensate pump to increase the inlet pressure of the pump and reduce the risk of cavitation. However, these traditional pressurization devices have complex structure and large volume, making it difficult to adapt to the layout of compact spaces. In addition, traditional pressurization devices are often designed for a single working condition and cannot be flexibly adjusted in a variable operating environment.

[0005] Therefore, how to realize dynamic adjustment of the inlet pressure of the condensate pump under multiple working conditions and improve the anti-cavitation capability of the system has become a key technical problem to be solved in the current technical background. SUMMARY

[0006] The present application provides a condensate pressurization system, method, electronic device and storage medium to solve the defects in the prior art, realize dynamic adjustment of the inlet pressure of the condensate pump under multiple working conditions, and improve the anti-cavitation capability of the system.

[0007] The present application provides a condensate pressurization system, comprising the following modules: a data processing module, a condensate pump control module, a frequency conversion module, a water pump pressurization module, and a condensate pump.

[0008] The first end of the data processing module is connected to the condensate pump control module, and the second end of the data processing module is connected to the input end of the frequency conversion module.

[0009] The data processing module is configured to obtain the rotational speed signal and the power signal of the condensate pump collected by the condensate pump control module.

[0010] The data processing module is further configured to obtain a water pump rotational speed control signal based on the rotational speed signal and the power signal, and send the water pump rotational speed control signal to the frequency conversion module.

[0011] The first end of the water pump pressurization module is connected to the output end of the variable frequency module, and the second end of the water pump pressurization module is connected to the condensate pump;

[0012] The water pump pressurization module is configured to receive a water pump rotating speed control signal output by the variable frequency module and drive the condensate pump based on the water pump rotating speed control signal.

[0013] According to the condensate water pressurization system provided by the present application, the water pump rotating speed control signal comprises a first rotating speed control signal and a second rotating speed control signal;

[0014] The data processing module is further configured to obtain a first target rotating speed of the primary shaftless pump and a second target rotating speed of the secondary shaftless pump based on the rotating speed signal and the power signal, and according to a primary shaftless pump hydraulic characteristic table, a secondary shaftless pump hydraulic characteristic table, a diffuser hydraulic characteristic table, a condensate pump vibration characteristic table, and a modified Markov model equation;

[0015] The data processing module is further configured to generate the first rotating speed control signal based on the first target rotating speed and send the first rotating speed control signal to the variable frequency module;

[0016] The data processing module is further configured to generate the second rotating speed control signal based on the second target rotating speed and send the second rotating speed control signal to the variable frequency module.

[0017] According to the condensate water pressurization system provided by the present application, the water pump rotating speed control signal comprises a first rotating speed control signal and a second rotating speed control signal; the water pump pressurization module comprises a primary shaftless pump, a diffuser, and a secondary shaftless pump;

[0018] The outlet of the primary shaftless pump is connected to the inlet of the secondary shaftless pump through the diffuser, and the outlet of the secondary shaftless pump is connected to the inlet of the condensate pump;

[0019] One end of the primary shaftless pump is connected to the first output end of the variable frequency module and configured to receive a first rotating speed control signal output by the variable frequency module;

[0020] One end of the secondary shaftless pump is connected to the second output end of the variable frequency module and configured to receive a second rotating speed control signal output by the variable frequency module.

[0021] According to the condensate water pressurization system provided by the present application, the data processing module is further configured to calculate a first outlet pressure of the primary shaftless pump and a second outlet pressure of the secondary shaftless pump corresponding to a vibration acceleration level target value at the condensate pump foot based on the vibration acceleration level target value and in combination with the condensate pump vibration characteristic table and the modified Markov model equation;

[0022] The processing module is further configured to calculate a first target rotating speed corresponding to the first outlet pressure according to the first-stage shaftless pump hydraulic characteristic table.

[0023] The processing module is further configured to calculate a second target rotating speed corresponding to the second outlet pressure according to the second-stage shaftless pump hydraulic characteristic table.

[0024] According to the condensate pressurization system, the first rotating speed control signal comprises a first rotating speed increasing signal and a first rotating speed decreasing signal; and the second rotating speed control signal comprises a second rotating speed increasing signal and a second rotating speed decreasing signal.

[0025] The data processing module is further configured to send the first rotating speed increasing signal to the variable frequency module when the first target rotating speed is greater than the first current rotating speed of the first-stage shaftless pump.

[0026] The data processing module is further configured to send the first rotating speed decreasing signal to the variable frequency module when the first target rotating speed is less than the first current rotating speed of the first-stage shaftless pump.

[0027] The data processing module is further configured to send the second rotating speed increasing signal to the variable frequency module when the second target rotating speed is greater than the second current rotating speed of the second-stage shaftless pump.

[0028] The data processing module is further configured to send the second rotating speed decreasing signal to the variable frequency module when the second target rotating speed is less than the second current rotating speed of the second-stage shaftless pump.

[0029] According to the condensate pressurization system, the variable frequency module is configured to control the first-stage shaftless pump to increase the first current rotating speed to the first target rotating speed after receiving the first rotating speed increasing signal.

[0030] The variable frequency module is further configured to control the first-stage shaftless pump to decrease the first current rotating speed to the first target rotating speed after receiving the first rotating speed decreasing signal.

[0031] The variable frequency module is further configured to control the second-stage shaftless pump to increase the second current rotating speed to the second target rotating speed after receiving the second rotating speed increasing signal.

[0032] The variable frequency module is further configured to control the second-stage shaftless pump to decrease the second current rotating speed to the second target rotating speed after receiving the second rotating speed decreasing signal.

[0033] The present application further provides a condensate pressurization method, comprising the following steps:

[0034] The data processing module obtains the rotation speed signal and the power signal of the condensate pump collected by the condensate pump control module;

[0035] The data processing module obtains the rotation speed signal and the power signal of the condensate pump collected by the condensate pump control module;

[0036] The data processing module obtains the rotation speed signal and the power signal of the condensate pump collected by the condensate pump control module;

[0037] The application further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the condensate pressurization method when executing the program.

[0038] The application further provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program is executable by a processor to implement the condensate pressurization method.

[0039] The application further provides a computer program product comprising a computer program, wherein the computer program is executable by a processor to implement the condensate pressurization method.

[0040] In summary, the one or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages:

[0041] The first end of the data processing module is connected to the condensate pump control module, and the second end is connected to the input end of the frequency conversion module, so that the rotation speed signal and the power signal of the condensate pump can be collected and transmitted in real time, and the data processing module can fully grasp the running state of the system. The data processing module generates the rotation speed control signal of the water pump based on the rotation speed signal and the power signal, and sends the control signal to the frequency conversion module, so that the rotation speed of the shaftless pump can be dynamically adjusted according to the real-time working condition, and the system can quickly respond when the load changes, and the operation efficiency is improved. The first end of the water pump pressurization module is connected to the output end of the frequency conversion module, and the second end is connected to the condensate pump, so that the rotation speed of the shaftless pump can be accurately controlled, and the pressurized condensate water can be stably delivered to the condensate pump, and the cavitation phenomenon caused by insufficient pressure can be avoided. The water pump pressurization module drives the rotation speed of the primary and secondary shaftless pumps in real time according to the rotation speed control signal output by the frequency conversion module, so that the dynamic adjustment of the inlet pressure of the condensate pump can be realized under multiple working conditions, the anti-cavitation ability of the system is improved, the vibration and noise can be reduced, and the service life of the pump can be prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0043] Figure 1 is the overall architecture diagram of the condensate water pressurization system provided by the present application.

[0044] Figure 2 is the flowchart of the condensate water pressurization method provided by the present application.

[0045] Figure 3 is the structural schematic diagram of the electronic device provided by the present application. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0047] It should be noted that, in the description of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices comprising a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device comprising the element. The terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the indicated system or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] The terms "first", "second", and the like in the present disclosure are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances so that the embodiments of the present disclosure can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" means at least one of the connected objects, and the character " / ", generally means that the objects before and after are in a "or" relationship.

[0049] The present disclosure will be described below in conjunction with Figures 1-3 The condensate water pressurization system, method, electronic device and storage medium provided by the present disclosure are described.

[0050] Referring to Figure 1 , Figure 1 is the overall architecture of the condensate water pressurization system provided by the present disclosure, and the system includes the following modules: a data processing module, a condensate pump control module, a frequency conversion module, a water pump pressurization module, and a condensate pump;

[0051] The first end of the data processing module is connected to the condensate pump control module, and the second end of the data processing module is connected to the input end of the frequency conversion module;

[0052] The data processing module is used to obtain the rotation speed signal and the power signal of the condensate pump collected by the condensate pump control module;

[0053] The data processing module is further used to obtain a water pump rotation speed control signal based on the rotation speed signal and the power signal, and send the water pump rotation speed control signal to the frequency conversion module;

[0054] The first end of the water pump pressurization module is connected to the output end of the frequency conversion module, and the second end of the water pump pressurization module is connected to the condensate pump;

[0055] The water pump pressurization module is used to receive the water pump rotation speed control signal output by the frequency conversion module, and drive the condensate pump based on the water pump rotation speed control signal.

[0056] Specifically, the system includes a data processing module, a condensate pump control module, a frequency conversion module, a water pump pressurization module, and a condensate pump. The purpose of this design is to ensure that the condensate pump operates efficiently and stably under multiple working conditions in a steam power system, and to avoid the decrease of pump efficiency, the increase of vibration and noise, and the instability of system operation caused by cavitation. Through the cooperative work of these modules, the dynamic regulation and control of the condensate pump operating state is realized, and the anti-cavitation ability and operating safety of the system are improved.

[0057] Firstly, the first end of the data processing module is connected to the condensate pump control module for real-time acquisition of the speed signal and power signal of the condensate pump, thereby monitoring the running state of the pump. These signals reflect the specific performance of the condensate pump under different loads and operating conditions, and are an important basis for determining whether the pump is in the best working condition. Based on these signals, the data processing module generates a water pump speed control signal through calculation. The second end of the data processing module is connected to the input end of the frequency conversion module, and the calculated water pump speed control signal is transmitted to the frequency conversion module.

[0058] The water pump booster module is the core part of the system to achieve dynamic pressure boosting. Its design goal is to improve the inlet pressure of the condensate pump by adjusting the speed of the pump, thereby avoiding cavitation. To achieve this goal, the first end of the water pump booster module is connected to the output end of the frequency conversion module, and the second end is connected to the condensate pump. The water pump booster module receives the water pump speed control signal from the frequency conversion module and adjusts the speed of the pump according to the signal. When the speed signal indicates that the speed of the pump needs to be increased, the water pump booster module can immediately respond to drive the shaftless pump to increase the speed and increase the inlet pressure of the system; when the signal indicates that the speed needs to be reduced, the system quickly reduces the speed to ensure that it runs in the appropriate working condition. This control logic can effectively prevent vibration and noise problems caused by high or low load of the pump.

[0059] Through the calculation and signal regulation of the data processing module, the system can automatically adapt to different operating conditions and achieve precise control of the speed of the condensate pump. After receiving the speed control signal output by the frequency conversion module, the water pump booster module directly drives the operation of the condensate pump. This design avoids the problem of complex structure of traditional booster systems that are difficult to adapt to compact spaces, so that the system can also run efficiently in space-limited environments such as ship power systems. In addition, this modular design improves the flexibility of the system, allowing it to maintain stability and anti-cavitation ability under multiple working conditions.

[0060] In summary, through the cooperative work of the above-mentioned modules, the system can maintain the stable operation of the condensate pump under different working conditions, reduce the risk of cavitation, improve the efficiency of the pump, and reduce vibration and noise. The mutual cooperation of the data processing module, the frequency conversion module and the water pump booster module realizes the dynamic adjustment of the speed of the condensate pump, ensuring the safe and efficient operation of the steam power system.

[0061] In one possible implementation, the water pump speed control signal includes a first speed control signal and a second speed control signal;

[0062] The data processing module is further configured to obtain a first target speed of the first shaftless pump and a second target speed of the second shaftless pump based on the speed signal and the power signal, and according to the first-stage shaftless pump hydraulic characteristic table, the second-stage shaftless pump hydraulic characteristic table, the diffuser hydraulic characteristic table, the condensate pump vibration characteristic table, and the modified Markov model equation.

[0063] The data processing module is further configured to generate a first rotating speed control signal based on the first target rotating speed and send the first rotating speed control signal to the frequency conversion module.

[0064] The data processing module is further configured to generate a second rotating speed control signal based on the second target rotating speed and send the second rotating speed control signal to the frequency conversion module.

[0065] In this embodiment, the system adopts the first rotating speed control signal and the second rotating speed control signal to precisely control the operation of the first shaftless pump and the second shaftless pump. The core goal of this design is to improve the anti-cavitation ability of the system through multi-stage regulation and ensure the stable operation of the condensate pump under different working conditions. In order to achieve this goal, the data processing module in the system not only needs to obtain the rotating speed signal and the power signal of the condensate pump in real time, but also needs to conduct dynamic calculation based on these data combined with the pre-set multiple hydraulic characteristics and vibration characteristics models.

[0066] Specifically, the data processing module will analyze comprehensively according to the real-time collected rotating speed and power signals, refer to the first shaftless pump hydraulic characteristic table, the second shaftless pump hydraulic characteristic table, the diffuser hydraulic characteristic table, the condensate pump vibration characteristic table, and conduct comprehensive analysis through the modified Markov model equation.

[0067] The first shaftless pump hydraulic characteristic table, the second shaftless pump hydraulic characteristic table, the diffuser hydraulic characteristic table, the condensate pump vibration characteristic table, and the modified Markov model equation are pre-set in the data processing unit. The first shaftless pump hydraulic characteristic table describes the relationship between the first shaftless pump outlet pressure and the first shaftless pump rotating speed. The second shaftless pump hydraulic characteristic table describes the relationship between the second shaftless pump outlet pressure and the second shaftless pump rotating speed. The diffuser hydraulic characteristic table describes the relationship between the diffuser outlet pressure and the diffuser inlet pressure; the diffuser inlet pressure is the same as the first shaftless pump outlet pressure; the diffuser outlet pressure is the same as the second shaftless pump inlet pressure. The condensate pump vibration characteristic table describes the relationship between the vibration acceleration level at the condensate pump foot and the condensate pump inlet pressure, condensate pump rotating speed, power and other parameters. The modified Markov model equation describes the relationship between the first shaftless pump inlet pressure, the diffuser inlet pressure, the second shaftless pump outlet pressure and the condensate pump rotating speed, power.

[0068] Through this calculation, the data processing module will generate the first target rotating speed of the first shaftless pump and the second target rotating speed of the second shaftless pump.

[0069] To ensure the stability and efficiency of the system under different operating conditions, the data processing module generates a first speed control signal and a second speed control signal based on the calculated target speed. The first speed control signal is used to adjust the operating state of the first shaftless pump to ensure that its output meets the current supercharging demand of the system, while the second speed control signal is used to further refine the control of the second shaftless pump to optimize the inlet pressure of the condensate pump. After the generation of these two signals, they are sent to the frequency conversion module, which adjusts the speed of the shaftless pump to achieve precise control.

[0070] This multi-stage control scheme effectively improves the anti-cavitation capability of the system by distributing the supercharging tasks of the first and second shaftless pumps. The data processing module uses the vibration characteristic table and the dynamic calculation capability of the modified Markov model to make pre-adjustments before the pump body shows a tendency to vibrate, reducing the generation of vibration and noise. In addition, the characteristics of the diffuser are fully considered in the pressure balance of the system, further improving the stability of the system.

[0071] In one possible implementation, the water pump speed control signal includes a first speed control signal and a second speed control signal; the water pump supercharging module includes: a first shaftless pump, a diffuser, and a second shaftless pump;

[0072] The outlet of the first shaftless pump is connected to the inlet of the second shaftless pump through the diffuser, and the outlet of the second shaftless pump is connected to the inlet of the condensate pump;

[0073] One end of the first shaftless pump is connected to the first output end of the frequency conversion module for receiving the first speed control signal output by the frequency conversion module;

[0074] One end of the second shaftless pump is connected to the second output end of the frequency conversion module for receiving the second speed control signal output by the frequency conversion module.

[0075] Specifically, the system design of this embodiment uses a first speed control signal and a second speed control signal to control the operation of the first and second shaftless pumps. This design aims to increase the inlet pressure of the condensate pump through multi-stage supercharging, effectively solving the cavitation problem that easily occurs in steam power systems, and ensuring the stable operation of the system under different load conditions. To achieve this goal, the water pump supercharging module in this system is composed of a first shaftless pump, a diffuser, and a second shaftless pump, which work together to provide stable inlet pressure for the condensate pump.

[0076] In the system, the outlet of the first shaftless pump is connected to the diffuser, the outlet of the diffuser is connected to the inlet of the second shaftless pump, and the outlet of the second shaftless pump is directly connected to the inlet of the condensate pump. The design of this series structure can realize the gradual increase of fluid pressure: the first shaftless pump first performs preliminary pressure boosting, the diffuser plays a role in smoothing pressure transmission and reducing flow loss between the two pumps, and then the second shaftless pump further increases the pressure to ensure that the condensate has sufficient pressure before entering the condensate pump to avoid cavitation.

[0077] To achieve precise control of the shaftless pump speed, one end of the first shaftless pump is connected to the first output end of the frequency conversion module for receiving the first speed control signal output by the frequency conversion module. Similarly, one end of the second shaftless pump is connected to the second output end of the frequency conversion module for receiving the second speed control signal. These control signals are dynamically generated by the data processing module according to the system's operating state and the preset hydraulic characteristic table, ensuring that the speed of the first and second shaftless pumps always matches the current operating requirements.

[0078] Specifically, when the system needs to increase the speed of the first shaftless pump, the data processing module generates and sends the first speed control signal to the frequency conversion module, which adjusts the motor output of the first shaftless pump to reach the target speed. Similarly, when the system needs to adjust the speed of the second shaftless pump, the data processing module generates the second speed control signal and transmits it to the frequency conversion module to ensure that the second shaftless pump operates at the appropriate speed. This control method not only ensures smooth pressure transmission between the two shaftless pumps, but also avoids system instability caused by pressure fluctuations.

[0079] The use of this two-stage shaftless pump and diffuser combination pressure boosting structure can achieve highly flexible multi-condition adaptability. Under different load conditions, the system can quickly respond by adjusting the speed of the first and second shaftless pumps to provide the required pressure level, ensuring the efficient operation of the condensate pump. At the same time, this design reduces pump body vibration and noise, improving system operation reliability. The introduction of the diffuser further optimizes pressure transition, avoiding energy loss in fluid flow and improving overall system efficiency.

[0080] In one possible implementation, the data processing module is further configured to calculate the first outlet pressure of the first shaftless pump and the second outlet pressure of the second shaftless pump corresponding to the target vibration acceleration level at the condensate pump foot based on the target vibration acceleration level and in combination with the condensate pump vibration characteristic table and the modified Markov model equation.

[0081] The processing module is further configured to calculate the first target speed corresponding to the first outlet pressure based on the first shaftless pump hydraulic characteristic table.

[0082] The processing module is further configured to calculate, according to a secondary shaftless pump hydraulic characteristic table, a second target rotating speed corresponding to the second outlet pressure.

[0083] Specifically, in this embodiment, the design goal of the system is to reduce the vibration acceleration level at the condensate pump foot by dynamically adjusting the outlet pressure and rotating speed of the primary and secondary shaftless pumps, ensure the stable operation of the system under multiple working conditions, and reduce the impact of vibration and noise on the safety and reliability of the system. To achieve this goal, the data processing module in the system calculates the first outlet pressure of the primary shaftless pump and the second outlet pressure of the secondary shaftless pump corresponding to the target vibration acceleration level based on the pre-set target vibration acceleration level at the condensate pump foot, combined with the condensate pump vibration characteristic table and the modified Markov model equation.

[0084] Specifically, the data processing module calculates the difference between the current vibration level and the target vibration acceleration level by receiving the operating state data of the condensate pump, such as rotating speed and power, and combining multiple characteristic tables and model equations in the system. The modified Markov model equation is used in this process to describe the dynamic characteristics of the system, quantifying the complex relationship between the vibration, power, and pressure of the condensate pump as control parameters. Through this analysis, the system can accurately determine the required outlet pressure of the primary and secondary shaftless pumps under the current working condition.

[0085] After calculating the target outlet pressure, the data processing module further converts the first outlet pressure into the first target rotating speed according to the primary shaftless pump hydraulic characteristic table. Similarly, the module also converts the second outlet pressure into the second target rotating speed according to the secondary shaftless pump hydraulic characteristic table. These target rotating speeds represent the operating state required for the shaftless pumps to achieve the best pressure boosting effect under the current working condition.

[0086] After generating the target rotating speed, the data processing module generates the corresponding rotating speed control signal according to the calculation result and transmits it to the frequency conversion module, which adjusts the rotating speed of the primary and secondary shaftless pumps to ensure that they operate in the best state. This calculation and adjustment mechanism based on the vibration characteristic table and the modified Markov model can timely adjust before the pump body tends to vibrate, avoiding excessive vibration and noise.

[0087] In one possible implementation, the first rotating speed control signal includes a first rotating speed increase signal and a first rotating speed decrease signal; the second rotating speed control signal includes a second rotating speed increase signal and a second rotating speed decrease signal.

[0088] The data processing module is further configured to send the first rotating speed increase signal to the frequency conversion module when the first target rotating speed is greater than the first current rotating speed of the primary shaftless pump.

[0089] The data processing module is further configured to send a first speed reduction signal to the frequency conversion module when the first target speed is less than the first current speed of the first shaftless pump.

[0090] The data processing module is further configured to send a second speed reduction signal to the frequency conversion module when the second target speed is less than the second current speed of the second shaftless pump.

[0091] The data processing module is further configured to send a second speed reduction signal to the frequency conversion module when the second target speed is less than the second current speed of the second shaftless pump.

[0092] Specifically, the first speed control signal in the system includes a first speed increase signal and a first speed reduction signal, which are used to control the speed of the first shaftless pump. When the first target speed is greater than the first current speed of the first shaftless pump, it indicates that the system needs to increase the speed of the first shaftless pump to ensure that the pressure boosting demand is met. At this time, the data processing module generates and sends a first speed increase signal to the frequency conversion module, and the frequency conversion module increases the speed of the first shaftless pump according to the signal until it reaches the first target speed.

[0093] Similarly, the second speed control signal includes a second speed increase signal and a second speed reduction signal, which are used to control the speed of the second shaftless pump. When the second target speed is greater than the second current speed of the second shaftless pump, the data processing module generates a second speed increase signal and sends it to the frequency conversion module, and the frequency conversion module adjusts the speed of the second shaftless pump to the target value according to the signal. Conversely, when the system detects that the first target speed is less than the first current speed of the first shaftless pump, the data processing module generates a first speed reduction signal and sends it to the frequency conversion module, and the frequency conversion module reduces the speed of the first shaftless pump. If the second target speed is less than the second current speed of the second shaftless pump, the data processing module also generates a second speed reduction signal to reduce the speed of the second shaftless pump through the frequency conversion module.

[0094] This design ensures that the system can dynamically adjust the speed of the shaftless pump according to the actual working condition during operation, so that the pressure transmission between the first and second shaftless pumps remains stable at all times, thereby preventing system instability caused by pressure fluctuations.

[0095] In one possible implementation, the frequency conversion module is configured to control the first shaftless pump to increase the first current speed to the first target speed after receiving the first speed increase signal.

[0096] The frequency conversion module is further configured to control the first shaftless pump to reduce the first current speed to the first target speed after receiving the first speed reduction signal.

[0097] The frequency conversion module is further configured to control the second shaftless pump to increase the second current speed to the second target speed after receiving the second speed increase signal.

[0098] The frequency conversion module is also configured to, after receiving the second speed reduction signal, control the second shaftless pump to reduce the second current speed to the second target speed.

[0099] Specifically, when the frequency conversion module receives the first speed increase signal, it indicates that the current speed of the first shaftless pump is lower than the first target speed, and speed increase is needed to meet the system's pressurization demand. At this time, the frequency conversion module controls the first shaftless pump to gradually increase the speed, ensuring that the output pressure of the pump can be increased in time. In this way, the first shaftless pump can effectively increase the pressure of the condensate water, providing suitable inlet pressure for the second shaftless pump and avoiding cavitation caused by insufficient pressure.

[0100] If the frequency conversion module receives the first speed reduction signal, it indicates that the current speed of the first shaftless pump is higher than the first target speed, and speed adjustment is needed to prevent excessive vibration and noise of the pump body. The frequency conversion module will reduce the speed of the first shaftless pump according to the signal, so that its operating state matches the current system demand, thereby reducing energy consumption and improving the stability of the system.

[0101] The same control logic also applies to the second shaftless pump. When the frequency conversion module receives the second speed increase signal, it controls the second shaftless pump to increase its current speed to the second target speed, to ensure that the system's pressurization capacity meets the demand. By increasing the speed of the second shaftless pump, the system can maintain the efficient operation of the condensate pump under multiple working conditions and ensure sufficient inlet pressure, thereby avoiding performance degradation caused by cavitation.

[0102] When the system detects that the second target speed is less than the current speed of the second shaftless pump and sends a second speed reduction signal, the frequency conversion module controls the second shaftless pump to reduce the speed, to reduce the operating load of the pump body. Such a control mechanism can reduce the vibration and noise of the pump body at high speed, prolong the service life of the equipment, and ensure the stable operation of the entire power system.

[0103] Referring to Figure 2 , Figure 2 is a flowchart of the condensate pressurization method provided by the present application, which comprises the following steps:

[0104] Step 1: Through the data processing module, obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module.

[0105] Step 2: Through the data processing module, obtain the water pump speed control signal based on the speed signal and power signal, and send the water pump speed control signal to the frequency conversion module.

[0106] Step 3: Through the water pump pressurization module, receive the water pump speed control signal output by the frequency conversion module, and drive the condensate pump based on the water pump speed control signal.

[0107] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention, such as... Figure 3 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330, and a communication bus 340. The processor 310, communication interface 320, and memory 330 communicate with each other via the communication bus 340. The processor 310 can call logical instructions in the memory 330 to execute a condensate pressurization method. This method includes: acquiring the condensate pump speed signal and power signal collected by the condensate pump control module through a data processing module; obtaining a pump speed control signal based on the speed and power signals through the data processing module and sending the pump speed control signal to the frequency converter module; and receiving the pump speed control signal output by the frequency converter module through the pump pressurization module and driving the condensate pump based on the pump speed control signal.

[0108] Furthermore, the logical instructions in the aforementioned memory 330 can be implemented as software functional modules and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, 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 of 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.

[0109] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by the computer, the computer can execute the condensate pressurization method provided in the above embodiments. The method includes: acquiring the speed signal and power signal of the condensate pump collected by the condensate pump control module through a data processing module; obtaining a pump speed control signal based on the speed signal and power signal through the data processing module, and sending the pump speed control signal to the frequency converter module; and receiving the pump speed control signal output by the frequency converter module through the pump pressurization module, and driving the condensate pump based on the pump speed control signal.

[0110] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by the processor 310, implements the condensate pressure boosting method provided by the above-mentioned embodiments, and the method comprises: obtaining, by the data processing module, the rotation speed signal and the power signal of the condensate pump collected by the condensate pump control module; obtaining, by the data processing module, the water pump rotation speed control signal based on the rotation speed signal and the power signal, and sending the water pump rotation speed control signal to the frequency conversion module; and receiving, by the water pump pressure boosting module, the water pump rotation speed control signal output by the frequency conversion module, and driving the condensate pump based on the water pump rotation speed control signal.

[0111] The system embodiments described above are merely illustrative, wherein the modules illustrated as separate components can or can not be physically separated, and the components illustrated as modules can or can not be physical modules, i.e., can be located in one place or distributed to multiple network modules. Part or all of the modules can be selected to achieve the purpose of the present embodiment according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0112] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary universal hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions, essentially or in the sense of contribution to the prior art, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods of the various embodiments or some parts of the embodiments.

[0113] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A condensate pressurization system, characterized in that, include: Data processing module, condensate pump control module, frequency converter module, water pump booster module, and condensate pump; The first end of the data processing module is connected to the condensate pump control module, and the second end of the data processing module is connected to the input end of the frequency converter module. The data processing module is used to acquire the speed signal and power signal of the condensate pump collected by the condensate pump control module. The data processing module is further configured to obtain a water pump speed control signal based on the speed signal and the power signal, and send the water pump speed control signal to the frequency converter module; the water pump speed control signal includes a first speed control signal and a second speed control signal; The data processing module is further configured to obtain the first target speed of the first-stage shaftless pump and the second target speed of the second-stage shaftless pump based on the speed signal and the power signal, and according to the hydraulic characteristic table of the first-stage shaftless pump, the hydraulic characteristic table of the second-stage shaftless pump, the hydraulic characteristic table of the diffuser, the vibration characteristic table of the condensate pump, and the modified Markov model equation. The data processing module is further configured to generate the first speed control signal based on the first target speed, and send the first speed control signal to the frequency converter module; The data processing module is further configured to generate the second speed control signal based on the second target speed, and send the second speed control signal to the frequency converter module; The data processing module is also used to calculate the first outlet pressure of the first-stage shaftless pump and the second outlet pressure of the second-stage shaftless pump corresponding to the target value of the vibration acceleration level at the condensate pump foot, and in combination with the condensate pump vibration characteristic table and the modified Markov model equation. The processing module is also used to calculate the first target rotational speed corresponding to the first outlet pressure based on the hydraulic characteristic table of the first-stage shaftless pump. The processing module is also used to calculate the second target rotational speed corresponding to the second outlet pressure based on the hydraulic characteristic table of the second-stage shaftless pump; The first end of the water pump booster module is connected to the output end of the frequency converter module, and the second end of the water pump booster module is connected to the condensate pump. The water pump booster module is used to receive the water pump speed control signal output by the frequency converter module, and drive the condensate pump based on the water pump speed control signal.

2. The condensate pressurization system according to claim 1, characterized in that, The water pump speed control signal includes a first speed control signal and a second speed control signal; the water pump booster module includes: a primary shaftless pump, a diffuser pipe, and a secondary shaftless pump; The outlet of the primary shaftless pump is connected to the inlet of the secondary shaftless pump through the diffuser pipe, and the outlet of the secondary shaftless pump is connected to the inlet of the condensate pump. One end of the primary shaftless pump is connected to the first output terminal of the frequency converter module, and is used to receive the first speed control signal output by the frequency converter module. One end of the secondary shaftless pump is connected to the second output terminal of the frequency converter module, and is used to receive the second speed control signal output by the frequency converter module.

3. The condensate pressurization system according to claim 1, characterized in that, The first speed control signal includes a first speed increase signal and a first speed decrease signal; the second speed control signal includes a second speed increase signal and a second speed decrease signal. The data processing module is further configured to send the first speed increase signal to the frequency converter module when the first target speed is greater than the first current speed of the first-stage shaftless pump; The data processing module is further configured to send the first speed reduction signal to the frequency converter module when the first target speed is less than the first current speed of the first-stage shaftless pump; The data processing module is further configured to send the second speed increase signal to the frequency converter module when the second target speed is greater than the second current speed of the secondary shaftless pump; The data processing module is further configured to send the second speed reduction signal to the frequency converter module when the second target speed is less than the second current speed of the secondary shaftless pump.

4. The condensate pressurization system according to claim 3, characterized in that, The frequency conversion module is used to control the first-stage shaftless pump to increase the first current speed to the first target speed after receiving the first speed increase signal; The frequency conversion module is also used to control the first-stage shaftless pump to reduce the first current speed to the first target speed after receiving the first speed reduction signal; The frequency converter module is also used to control the secondary shaftless pump to increase the second current speed to the second target speed after receiving the second speed increase signal; The frequency converter module is also used to control the secondary shaftless pump to reduce the second current speed to the second target speed after receiving the second speed reduction signal.

5. A method for pressurizing condensate, characterized in that, include: The data processing module acquires the speed and power signals of the condensate pump collected by the condensate pump control module. The data processing module obtains a water pump speed control signal based on the speed signal and the power signal, and sends the water pump speed control signal to the frequency converter module; the water pump speed control signal includes a first speed control signal and a second speed control signal. The data processing module obtains the first target speed of the first-stage shaftless pump and the second target speed of the second-stage shaftless pump based on the speed signal and the power signal, and according to the hydraulic characteristic table of the first-stage shaftless pump, the hydraulic characteristic table of the second-stage shaftless pump, the hydraulic characteristic table of the diffuser, the vibration characteristic table of the condensate pump, and the modified Markov model equation. The data processing module generates the first speed control signal based on the first target speed and sends the first speed control signal to the frequency converter module. The data processing module generates a second speed control signal based on the second target speed and sends the second speed control signal to the frequency converter module. Using the data processing module, based on the target value of the vibration acceleration level at the condensate pump foot, and in conjunction with the condensate pump vibration characteristic table and the modified Markov model equation, the first outlet pressure of the first-stage shaftless pump and the second outlet pressure of the second-stage shaftless pump corresponding to the target value of the vibration acceleration level are calculated. The processing module calculates the first target rotational speed corresponding to the first outlet pressure based on the hydraulic characteristic table of the first-stage shaftless pump. The processing module calculates the second target rotational speed corresponding to the second outlet pressure based on the hydraulic characteristic table of the secondary shaftless pump. The pump booster module receives the pump speed control signal output by the frequency converter module and drives the condensate pump based on the pump speed control signal.

6. 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 computer program, it implements the condensate pressurization method as described in claim 5.

7. 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 condensate pressurization method as described in claim 5.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the condensate pressurization method as described in claim 5.

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