Condensate pressurization system and method

Abstract

The invention provides a condensate pressurization system and method, and belongs to the technical field of water pump design, the first end of a data processing module is connected to a condensate pump control module, and the second end of the data processing module is connected to the input end of a frequency conversion module; the data processing module is used for acquiring the rotating speed signal and the power signal of the condensate pump acquired by the condensate pump control module; the data processing module is further 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; 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. The water pump pressurization 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 cooperative control of all the modules, the rotating speed and pressure of the first-stage shaftless pump and the second-stage shaftless pump are dynamically adjusted based on real-time working conditions, and therefore the anti-cavitation capacity of the condensate water system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump design, and in particular to a condensate boosting system and method. Background Art

[0002] During the operation of the steam power system, the condensate system is responsible for continuously extracting and pressurizing the condensate in the condenser and delivering it to the water supply 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 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 limitation makes the inlet pressure of the condensate pump insufficient, thereby increasing the risk of cavitation in the pump.

[0004] The existing technology generally increases the pump inlet pressure by installing a booster device at the front end of the condensate pump to reduce the risk of cavitation. However, these traditional boosters are complex in structure and bulky in size, making it difficult to adapt to the layout of a compact space. In addition, traditional boosters are often only designed for a single working condition and cannot be flexibly adjusted under a changing operating environment.

[0005] Therefore, how to achieve dynamic regulation of the condensate pump inlet pressure under multiple operating conditions and improve the system's anti-cavitation capability has become a key technical issue that needs to be urgently solved under the current technical background. Summary of the invention

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

[0007] The present invention provides a condensate boosting system, comprising the following modules: a data processing module, a condensate pump control module, a frequency conversion module, a water pump boosting module and a 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 conversion module; The data processing module is used to obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module; The data processing module is further used 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 conversion module; The first end of the water pump boost module is connected to the output end of the frequency conversion module, and the second end of the water pump boost module is connected to the condensate pump; The water pump boost module is used to 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.

[0008] According to a condensate boosting system provided by the present invention, the water pump speed control signal includes a first speed control signal and a second speed control signal; The data processing module is further used to obtain a first target speed of the first-stage shaftless pump and a second target speed of the second-stage shaftless pump based on the speed signal and the power signal and according to a hydraulic characteristic table of the first-stage shaftless pump, a hydraulic characteristic table of the second-stage shaftless pump, a hydraulic characteristic table of the diffuser pipe, a vibration characteristic table of the condensate pump, and a modified Markov model equation; The data processing module is further used to generate the first speed control signal based on the first target speed, and send the first speed control signal to the frequency conversion module; The data processing module is further used to generate the second speed control signal based on the second target speed, and send the second speed control signal to the frequency conversion module.

[0009] According to a condensate boosting system provided by the present invention, the water pump speed control signal includes a first speed control signal and a second speed control signal; the water pump boosting module includes: a first-stage shaftless pump, a diffuser pipe and a second-stage shaftless pump; The outlet of the first-stage shaftless pump is connected to the inlet of the second-stage shaftless pump through the diffuser pipe, and the outlet of the second-stage shaftless pump is connected to the inlet of the condensate pump; One end of the primary shaftless pump is connected to the first output end of the frequency conversion module, and is used to receive the first speed control signal output by the frequency conversion module; One end of the two-stage shaftless pump is connected to the second output end of the frequency conversion module, and is used to receive the second speed control signal output by the frequency conversion module.

[0010] According to a condensate boosting system provided by the present invention, the data processing module is further 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 vibration acceleration level target value based on the vibration acceleration level target value at the condensate pump foot, in combination with the condensate pump vibration characteristic table and the modified Markov model equation; The processing module is further used to calculate a first target speed corresponding to the first outlet pressure according to the hydraulic characteristic table of the first-stage shaftless pump; The processing module is further used to calculate a second target rotation speed corresponding to the second outlet pressure according to the hydraulic characteristic table of the secondary shaftless pump.

[0011] According to a condensate boosting system provided by the present invention, 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 conversion 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 conversion 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 conversion 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 conversion module when the second target speed is less than the second current speed of the secondary shaftless pump.

[0012] According to a condensate boosting system provided by the present invention, 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 further 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 conversion module is further 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 conversion module is further 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.

[0013] The present invention also provides a condensation water pressurization method, comprising the following steps: The data processing module is used to obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module; A water pump speed control signal is obtained based on the speed signal and the power signal through a data processing module, and the water pump speed control signal is sent to a frequency conversion module; The water pump boost module receives the water pump speed control signal output by the frequency conversion module, and drives the condensate pump based on the water pump speed control signal.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the condensation water pressurization method is implemented when the processor executes the program.

[0015] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the condensation water pressurization method is implemented.

[0016] The present invention also provides a computer program product, comprising a computer program, wherein the computer program implements the condensation water pressurization method when executed by a processor.

[0017] In summary, one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 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 as to realize real-time acquisition and transmission of the speed signal and power signal of the condensate pump, and ensure that the data processing module can fully grasp the operating status of the system. The data processing module generates a water pump speed control signal based on the speed signal and the power signal, and sends the control signal to the frequency conversion module, so as to dynamically adjust the speed of the shaftless pump according to the real-time working conditions, and ensure that the system can respond quickly when the load changes, and improve the operating efficiency. The first end of the water pump boosting module is connected to the output end of the frequency conversion module, and the second end is connected to the condensate pump, so as to realize precise control of the speed of the shaftless pump, and stably deliver the boosted condensate to the condensate pump to avoid cavitation caused by insufficient pressure. The water pump boosting module drives the speed of the first and second shaftless pumps in real time according to the speed control signal output by the frequency conversion module, so as to realize dynamic adjustment of the inlet pressure of the condensate pump under multiple working conditions, improve the anti-cavitation ability of the system, and reduce vibration and noise, and extend the service life of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is an overall architecture diagram of the condensate boosting system provided by the present invention.

[0020] Figure 2 It is a schematic flow chart of the condensate pressurization method provided by the present invention.

[0021] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the description of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] The terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. 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 indicates that the objects associated with each other are in an "or" relationship.

[0025] Combine the following Figure 1-Figure 3 The present invention describes a condensate pressurization system, method, electronic device and storage medium.

[0026] Reference Figure 1 , Figure 1 It is the overall architecture diagram of the condensate boosting system provided by the present invention, and the system includes the following modules: a data processing module, a condensate pump control module, a frequency conversion module, a water pump boosting module and a 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 conversion module; A data processing module, used for acquiring a speed signal and a power signal of the condensate pump collected by the condensate pump control module; The data processing module is also used 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 conversion module; The first end of the water pump boost module is connected to the output end of the frequency conversion module, and the second end of the water pump boost module is connected to the condensate pump; The water pump boost module is used to 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.

[0027] Specifically, the system includes a data processing module, a condensate pump control module, a frequency conversion module, a water pump booster 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 the steam power system, avoiding reduced pump efficiency, increased vibration and noise, and unstable system operation caused by cavitation. Through the collaborative work of these modules, the dynamic regulation of the operating state of the condensate pump is achieved, and the system's anti-cavitation ability and operational safety are improved.

[0028] First, the first end of the data processing module is connected to the condensate pump control module, which is used to obtain the speed signal and power signal of the condensate pump in real time, so as to monitor the operating status 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 judging whether the pump is in the best working condition. Based on these signals, the data processing module generates a water pump speed control signal by 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.

[0029] The water pump booster module is the core part of the system to achieve dynamic boosting. Its design goal is to increase the inlet pressure of the condensate pump by adjusting the speed of the pump, thereby avoiding the occurrence of cavitation. In order 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 respond immediately, 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 will quickly decelerate to ensure that it operates under appropriate working conditions. This control logic can effectively prevent vibration and noise problems caused by high or low loads of the pump.

[0030] Through the calculation and signal control of the data processing module, the system can automatically adapt to different operating conditions and realize precise control of the condensate pump speed. 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 and difficulty in adapting to compact space of traditional booster systems, so that this system can also operate efficiently in space-constrained environments (such as ship power systems). In addition, this modular design improves the flexibility of the system, enabling it to maintain stability and anti-cavitation capabilities under multiple operating conditions.

[0031] In summary, through the collaborative work of the above modules, this 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 cooperation between the data processing module, the frequency conversion module and the water pump booster module realizes the dynamic adjustment of the condensate pump speed and ensures the safe and efficient operation of the steam power system.

[0032] In a possible implementation manner, the water pump speed control signal includes a first speed control signal and a second speed control signal; The data processing module is further used to obtain a first target speed of the first-stage shaftless pump and a 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 pipe, the vibration characteristic table of the condensate pump and the modified Markov model equation; The data processing module is further used to generate a first speed control signal based on the first target speed, and send the first speed control signal to the frequency conversion module; The data processing module is further used to generate a second speed control signal based on the second target speed, and send the second speed control signal to the frequency conversion module.

[0033] In this embodiment, the system uses a first speed control signal and a second speed control signal to accurately control the operation of the first-stage shaftless pump and the second-stage shaftless pump. The core goal of this design is to improve the system's anti-cavitation ability 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 obtains the speed signal and power signal of the condensate pump in real time, but also needs to perform dynamic calculations based on these data in combination with multiple preset hydraulic characteristics and vibration characteristics models.

[0034] Specifically, the data processing module will refer to the first-stage shaftless pump hydraulic characteristic table, the second-stage shaftless pump hydraulic characteristic table, the diffuser pipe hydraulic characteristic table, and the condensate pump vibration characteristic table based on the real-time collected speed and power signals, and perform a comprehensive analysis through the modified Markov model equation.

[0035] 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 are preset in the data processing unit, wherein the hydraulic characteristic table of the first-stage shaftless pump describes the relationship between the outlet pressure of the first-stage shaftless pump and the rotation speed of the first-stage shaftless pump. The hydraulic characteristic table of the second-stage shaftless pump describes the relationship between the outlet pressure of the second-stage shaftless pump and the rotation speed of the second-stage shaftless pump. The hydraulic characteristic table of the diffuser describes the relationship between the outlet pressure of the diffuser and the inlet pressure of the diffuser; the inlet pressure of the diffuser is the same as the outlet pressure of the first-stage shaftless pump; the outlet pressure of the diffuser is the same as the inlet pressure of the second-stage shaftless pump. The vibration characteristic table of the condensate pump describes the relationship between the vibration acceleration level at the foot of the condensate pump and the inlet pressure, rotation speed and power of the condensate pump. The modified Markov model equation describes the relationship between the inlet pressure of the first-stage shaftless pump, the inlet pressure of the diffuser, the outlet pressure of the second-stage shaftless pump and the rotation speed and power of the condensate pump.

[0036] Through this calculation, the data processing module generates a first target speed of the primary shaftless pump and a second target speed of the secondary shaftless pump.

[0037] In order to ensure the stability and efficiency of the system under different operating conditions, the data processing module generates the first speed control signal and the 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-stage shaftless pump to ensure that its output meets the current boost demand of the system; while the second speed control signal is further refined for the second-stage shaftless pump to optimize the inlet pressure of the condensate pump. After the two signals are generated, they are sent to the frequency conversion module respectively, which adjusts the speed of the shaftless pump to achieve precise control.

[0038] This multi-stage control scheme effectively improves the system's anti-cavitation ability by allocating the boosting tasks of the first and second shaftless pumps. The data processing module uses the dynamic calculation capabilities of the vibration characteristic table and the modified Markov model to enable the system to pre-adjust before the pump body tends 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.

[0039] In a possible implementation, the water pump speed control signal includes a first speed control signal and a second speed control signal; the water pump boost module includes: a first-stage shaftless pump, a diffuser pipe, and a second-stage shaftless pump; The outlet of the first-stage shaftless pump is connected to the inlet of the second-stage shaftless pump through a diffuser pipe, and the outlet of the second-stage shaftless pump is connected to the inlet of the condensate pump; One end of the first-stage shaftless pump is connected to the first output end of the frequency conversion module, and is used to receive the first speed control signal output by the frequency conversion module; One end of the secondary shaftless pump is connected to the second output end of the frequency conversion module, and is used to receive the second speed control signal output by the frequency conversion module.

[0040] 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-stage shaftless pump and the second-stage shaftless pump respectively. This design aims to increase the inlet pressure of the condensate pump by multi-stage boosting, effectively solve the cavitation problem that is prone to occur in the steam power system, and ensure the stable operation of the system under different load conditions. To achieve this goal, the water pump boosting module in this system consists of a first-stage shaftless pump, a diffuser, and a second-stage shaftless pump. These components work together to provide a stable inlet pressure for the condensate pump.

[0041] In this system, the outlet of the first-stage shaftless pump is connected to the diffuser, the outlet of the diffuser is connected to the inlet of the second-stage shaftless pump, and the outlet of the second-stage shaftless pump is directly connected to the inlet of the condensate pump. This series structure design can achieve a gradual increase in fluid pressure: the first-stage shaftless pump first performs preliminary pressure increase, the diffuser plays a role in smoothing pressure transmission and reducing flow losses between the two pumps, and then the second-stage shaftless pump further increases the pressure to ensure that the condensate has sufficient pressure before entering the condensate pump to avoid cavitation.

[0042] In order to achieve precise control of the shaftless pump speed, one end of the first-stage shaftless pump is connected to the first output end of the frequency conversion module to receive the first speed control signal output by the frequency conversion module; similarly, one end of the second-stage shaftless pump is connected to the second output end of the frequency conversion module to receive the second speed control signal. These control signals are dynamically generated by the data processing module according to the operating status of the system and the preset hydraulic characteristic table to ensure that the speed of the first-stage and second-stage shaftless pumps always matches the current working conditions.

[0043] Specifically, when the system needs to increase the speed of the first-stage shaftless pump, the data processing module generates and sends a first speed control signal to the frequency conversion module, which adjusts the motor output of the first-stage shaftless pump to reach the target speed. Similarly, when the system needs to adjust the speed of the second-stage shaftless pump, the data processing module generates a second speed control signal and transmits it to the frequency conversion module to ensure that the second-stage shaftless pump runs at an appropriate speed. This control method not only ensures smooth pressure transmission between the two-stage shaftless pumps, but also avoids system instability caused by pressure fluctuations.

[0044] The boosting structure of this two-stage shaftless pump combined with a diffuser can achieve highly flexible adaptability to multiple working conditions. Under different load conditions, the system can respond quickly and provide the required pressure level by adjusting the speed of the first and second stage shaftless pumps, thereby ensuring the efficient operation of the condensate pump. At the same time, this design reduces the vibration and noise of the pump body and improves the operational reliability of the system. The introduction of the diffuser further optimizes the pressure transition, avoids energy loss in fluid flow, and improves the efficiency of the overall system.

[0045] In a possible implementation, the data processing module is further 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 vibration acceleration level target value based on the vibration acceleration level target value at the foot of the condensate pump and in combination with the condensate pump vibration characteristic table and the modified Markov model equation; The processing module is further used to calculate a first target speed corresponding to a first outlet pressure according to a hydraulic characteristic table of a first-stage shaftless pump; The processing module is also used to calculate a second target rotation speed corresponding to the second outlet pressure according to the hydraulic characteristic table of the secondary shaftless pump.

[0046] Specifically, in this embodiment, the design goal of the system is to reduce the vibration acceleration level at the foot of the condensate pump by dynamically adjusting the outlet pressure and speed of the first-stage shaftless pump and the second-stage shaftless pump, 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 first-stage shaftless pump and the second outlet pressure of the second-stage shaftless pump corresponding to the target value in real time based on the preset target value of the vibration acceleration level at the foot of the condensate pump, combined with the condensate pump vibration characteristic table and the modified Markov model equation.

[0047] Specifically, the data processing module receives the operating status data of the condensate pump, such as speed and power, and combines multiple characteristic tables and model equations in the system to calculate the difference between the current vibration level and the target vibration acceleration level. The modified Markov model equation is used in this process to describe the dynamic characteristics of the system and quantify 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 outlet pressure required for the first-stage shaftless pump and the second-stage shaftless pump under the current operating conditions.

[0048] After calculating the target outlet pressure, the data processing module will further convert the first outlet pressure into the first target speed according to the hydraulic characteristic table of the first-stage shaftless pump. Similarly, the module will convert the second outlet pressure into the second target speed according to the hydraulic characteristic table of the second-stage shaftless pump. These target speeds represent the operating state required for the shaftless pump to achieve the best boosting effect under the current working conditions.

[0049] After generating the target speed, the data processing module generates a corresponding speed control signal based on the calculation result and transmits it to the frequency conversion module, which adjusts the speed of the primary and secondary shaftless pumps to ensure that both operate in the best state. This calculation and adjustment mechanism based on the vibration characteristic table and the modified Markov model can pre-adjust the pump body in time before the vibration tendency occurs, avoiding excessive vibration and noise.

[0050] In a possible implementation manner, 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 used to send a first speed increase signal to the frequency conversion module when the first target speed is greater than a first current speed of the first-stage shaftless pump; 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 a first current speed of the first-stage shaftless pump; The data processing module is further used to send a second speed increase signal to the frequency conversion module when the second target speed is greater than the second current speed of the secondary shaftless pump; The data processing module is also used 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 secondary shaftless pump.

[0051] 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-stage shaftless pump. When the first target speed is greater than the first current speed of the first-stage shaftless pump, it means that the system needs to increase the speed of the first-stage shaftless pump to ensure that the boost demand is met. At this time, the data processing module generates and sends the first speed increase signal to the frequency conversion module, and the frequency conversion module increases the speed of the first-stage shaftless pump according to the signal until it reaches the first target speed.

[0052] 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 secondary shaftless pump. When the second target speed is greater than the second current speed of the secondary 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 secondary 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 primary 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 primary shaftless pump. If the second target speed is less than the second current speed of the secondary shaftless pump, the data processing module also generates a second speed reduction signal, and reduces the speed of the secondary shaftless pump through the frequency conversion module.

[0053] This design ensures that the system can dynamically adjust the speed of the shaftless pump according to the actual working conditions during operation, so that the pressure transmission between the primary and secondary shaftless pumps always remains stable, thereby preventing system instability caused by pressure fluctuations.

[0054] In a possible implementation, 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 further 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 conversion module is further 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 conversion 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.

[0055] Specifically, when the frequency conversion module receives the first speed increase signal, it indicates that the current speed of the first-stage shaftless pump is lower than the first target speed, and the speed needs to be increased to meet the system's boost demand. At this time, the frequency conversion module controls the first-stage shaftless pump to gradually increase the speed to ensure that the pump's output pressure can be increased in time. In this way, the first-stage shaftless pump can effectively increase the pressure of the condensate, provide a suitable inlet pressure for the second-stage shaftless pump, and avoid cavitation due to insufficient pressure.

[0056] If the frequency conversion module receives the first speed reduction signal, it indicates that the current speed of the first-stage shaftless pump is higher than the first target speed, and the speed needs to be adjusted to prevent the pump body from generating unnecessary vibration and noise. The frequency conversion module will reduce the speed of the first-stage shaftless pump according to the signal to match its operating state with the current system requirements, thereby reducing energy consumption and improving the system's operating stability.

[0057] The same control logic also applies to the secondary shaftless pump. When the frequency conversion module receives the second speed increase signal, the module will control the secondary shaftless pump to increase its current speed to the second target speed to ensure that the system's boost capacity meets the requirements. By increasing the speed of the secondary 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.

[0058] When the system detects that the second target speed is less than the current speed of the secondary shaftless pump and sends a second speed reduction signal, the frequency conversion module controls the secondary 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, extend the service life of the equipment, and ensure the stable operation of the entire power system.

[0059] Reference Figure 2 , Figure 2 Schematic diagram of the process of the condensate pressurization method provided by the present invention, the method comprises the following steps: Step 1: Obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module through the data processing module.

[0060] Step 2: Obtain a water pump speed control signal based on the speed signal and the power signal through the data processing module, and send the water pump speed control signal to the frequency conversion module.

[0061] Step 3: Receive the water pump speed control signal output by the frequency conversion module through the water pump boost module, and drive the condensate pump based on the water pump speed control signal.

[0062] Figure 3 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 (processor), a communication interface 320 (CommunicationsInterface), a memory 330 (memory) and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 complete mutual communication through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the condensate boosting method, which includes: obtaining the speed signal and power signal of the condensate pump collected by the condensate pump control module through the data processing module; obtaining the water pump speed control signal based on the speed signal and the power signal through the data processing module, and sending the water pump speed control signal to the frequency conversion module; receiving the water pump speed control signal output by the frequency conversion module through the water pump boosting module, and driving the condensate pump based on the water pump speed control signal.

[0063] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of software function modules and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory 330 (ROM, Read-Only Memory), random access memory 330 (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0064] 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, and the computer program includes program instructions. When the program instructions are executed by the computer, the computer can execute the condensate boosting method provided in the above-mentioned embodiments, and the method includes: obtaining the speed signal and power signal of the condensate pump collected by the condensate pump control module through the data processing module; obtaining the water pump speed control signal based on the speed signal and the power signal through the data processing module, and sending the water pump speed control signal to the frequency conversion module; receiving the water pump speed control signal output by the frequency conversion module through the water pump boosting module, and driving the condensate pump based on the water pump speed control signal.

[0065] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by the processor 310, it is implemented to execute the condensate boosting method provided in the above-mentioned embodiments, the method comprising: obtaining the speed signal and power signal of the condensate pump collected by the condensate pump control module through the data processing module; obtaining a water pump speed control signal based on the speed signal and the power signal through the data processing module, and sending the water pump speed control signal to the frequency conversion module; receiving the water pump speed control signal output by the frequency conversion module through the water pump boosting module, and driving the condensate pump based on the water pump speed control signal.

[0066] The system embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0067] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A condensate boosting system, characterized in that: include: Data processing module, condensate pump control module, frequency conversion 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 conversion module; The data processing module is used to obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module; The data processing module is further used 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 conversion module; The first end of the water pump boost module is connected to the output end of the frequency conversion module, and the second end of the water pump boost module is connected to the condensate pump; The water pump boost module is used to 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.

2. A condensate boosting 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 data processing module is further used to obtain a first target speed of the first-stage shaftless pump and a second target speed of the second-stage shaftless pump based on the speed signal and the power signal and according to a hydraulic characteristic table of the first-stage shaftless pump, a hydraulic characteristic table of the second-stage shaftless pump, a hydraulic characteristic table of the diffuser pipe, a vibration characteristic table of the condensate pump, and a modified Markov model equation; The data processing module is further used to generate the first speed control signal based on the first target speed, and send the first speed control signal to the frequency conversion module; The data processing module is further used to generate the second speed control signal based on the second target speed, and send the second speed control signal to the frequency conversion module.

3. The condensate boosting 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 boost module includes: a first-stage shaftless pump, a diffuser pipe and a second-stage shaftless pump; The outlet of the first-stage shaftless pump is connected to the inlet of the second-stage shaftless pump through the diffuser pipe, and the outlet of the second-stage shaftless pump is connected to the inlet of the condensate pump; One end of the primary shaftless pump is connected to the first output end of the frequency conversion module, and is used to receive the first speed control signal output by the frequency conversion module; One end of the two-stage shaftless pump is connected to the second output end of the frequency conversion module, and is used to receive the second speed control signal output by the frequency conversion module.

4. A condensate boosting system according to claim 2, characterized in that: The data processing module is further 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 vibration acceleration level target value based on the vibration acceleration level target value at the foot of the condensate pump and in combination with the condensate pump vibration characteristic table and the modified Markov model equation; The processing module is further used to calculate a first target speed corresponding to the first outlet pressure according to the hydraulic characteristic table of the first-stage shaftless pump; The processing module is further used to calculate a second target rotation speed corresponding to the second outlet pressure according to the hydraulic characteristic table of the secondary shaftless pump.

5. The condensate boosting system according to claim 2, 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 conversion 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 conversion 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 conversion 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 conversion module when the second target speed is less than the second current speed of the secondary shaftless pump.

6. A condensate boosting system according to claim 5, 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 further 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 conversion module is further 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 conversion module is further 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.

7. A condensate pressurization method, characterized in that: include: The data processing module is used to obtain the speed signal and power signal of the condensate pump collected by the condensate pump control module; A water pump speed control signal is obtained through a data processing module based on the speed signal and the power signal, and the water pump speed control signal is sent to a frequency conversion module; The water pump boost module receives the water pump speed control signal output by the frequency conversion module, and drives the condensate pump based on the water pump speed control signal.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the condensate pressurization method as claimed in claim 7 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the condensate pressurization method as claimed in claim 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the condensate pressurization method as claimed in claim 7 is implemented.

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