Anti-surge control method, fan unit, emptying valve group and anti-surge controller

Abstract

The invention relates to an anti-surge control method, a fan unit, an emptying valve group and an anti-surge controller, and relates to the field of fan equipment control. The method comprises the steps that in the operation process of the fan equipment, current first working condition information of the fan equipment is obtained; when it is determined that the working condition point of the fan equipment enters the surge early warning interval based on the first working condition information, a first emptying instruction is generated, the first emptying instruction is used for controlling a first emptying valve of the fan equipment to be opened, and the fan equipment is in the running state; and whether a second emptying valve is opened or not is judged at least according to the surge sign occurrence frequency of the fan equipment within the preset time period, and the first emptying valve and the second emptying valve are connected in parallel. By adopting the method, the normal working efficiency of fan equipment can be guaranteed.

Description

Technical Field

[0001] The present application relates to the field of fan equipment control, and in particular to an anti-surge control method, a fan unit, a vent valve unit, and an anti-surge controller. Background Art

[0002] Centrifugal fans often exhibit signs of surge, especially during commissioning and when significant process changes occur. This can damage components, leading to the need for anti-surge control in fan equipment.

[0003] Currently, anti-surge strategies typically involve immediately shutting down the equipment or increasing its speed if surge is detected. However, in reality, process variations in gas-consuming equipment can lead to frequent, slight pressure fluctuations. If pressure fluctuations occur in the surge zone, they can cause frequent shutdowns of the fan equipment, impacting normal production and efficiency. Summary of the Invention

[0004] Based on this, it is necessary to provide an anti-surge control method, a fan unit, a vent valve group and an anti-surge controller that can ensure the normal working efficiency of the fan equipment in response to the above technical problems.

[0005] In a first aspect, the present application provides an anti-surge control method, comprising:

[0006] During the operation of the fan equipment, obtaining the current first operating condition information of the fan equipment;

[0007] When it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning range, a first venting instruction is generated, the first venting instruction is used to control the first vent valve of the fan equipment to open, and the fan equipment is in an operating state;

[0008] At least based on the frequency of surge signs of the fan equipment within a preset time period, it is determined whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

[0009] In one embodiment, the anti-surge control method further includes: if the frequency of surge signs is greater than or equal to a preset frequency threshold, generating a second vent instruction; the second vent instruction is used to control the opening of the second vent valve; generating a shutdown instruction for the fan equipment, and the shutdown instruction is used to control the fan equipment to slow down and shut down.

[0010] In one embodiment, the exhaust flow rate of the second vent valve is greater than the exhaust flow rate of the first vent valve, wherein the first vent instruction is used to control the first vent valve to fully open.

[0011] In one embodiment, the second vent instruction is used to control the second vent valve to be fully opened; or, the second vent instruction is used to control the second vent valve to be opened according to the obtained valve opening of the second vent valve.

[0012] In one embodiment, the anti-surge control method further includes: if the frequency of occurrence of the surge sign is less than a preset frequency threshold, keeping the second vent valve closed.

[0013] In one embodiment, the first venting instruction is further used to control the fan device to increase the rotation speed.

[0014] In one embodiment, after starting the first vent valve, the method further includes:

[0015] Obtain the current second operating condition information of the fan equipment;

[0016] When it is determined based on the second operating condition information that the operating point of the fan equipment is in a safe range, the first vent valve is closed and the fan equipment is controlled to continue operating.

[0017] In one embodiment, after starting the first vent valve, the method further includes:

[0018] Obtain the current second operating condition information of the fan equipment;

[0019] When it is determined based on the second operating condition information that the current operating point of the fan equipment moves toward the safe range, the first vent valve is closed after the first vent valve continues to operate for a preset period of time, and the fan equipment is controlled to continue operating.

[0020] In one embodiment, the anti-surge control method further includes:

[0021] When it is determined based on the second operating condition information that the operating point of the fan equipment has not moved into the safe range, controlling the second vent valve to start;

[0022] Generate a shutdown command for the fan equipment, which is used to control the fan equipment to slow down and stop.

[0023] In one embodiment, before determining whether to open the second vent valve based at least on the frequency of surge signs of the wind turbine device within a preset time period, the method further includes:

[0024] Obtaining a start frequency of the first vent valve within a preset time period;

[0025] The starting frequency is used as the frequency of surge signs of the fan equipment within a preset time period.

[0026] In one embodiment, when it is determined based on the first operating condition information that the operating point of the wind turbine equipment enters the surge warning range, before generating the first venting instruction, the method further includes:

[0027] Determine the critical line of surge of fan equipment;

[0028] The surge margin is superimposed on the critical line to obtain the surge warning range.

[0029] In a second aspect, the present application further provides a fan unit, comprising: at least one fan device, a first vent valve, a second vent valve, and a controller; the controller is connected to the first vent valve and the second vent valve;

[0030] The first vent valve and the second vent valve are both used for exhaust;

[0031] The controller is used to obtain the current first operating condition information of the fan equipment during the operation of the fan equipment; when it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning range, generate a first vent instruction, and the first vent instruction is used to control the first vent valve of the fan equipment to open, and the fan equipment is in an operating state; at least based on the frequency of surge signs of the fan equipment within a preset time period, determine whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

[0032] In a third aspect, the present application further provides a vent valve assembly, which is provided at the outlet end of the fan equipment and includes: a first vent valve and a second vent valve, wherein:

[0033] The first vent valve is used to open when it is determined based on first operating condition information during the operation of the fan equipment that the operating point of the fan equipment enters the surge warning range, so as to discharge gas in the fan equipment;

[0034] The second vent valve is used to determine whether to open based on at least the frequency of surge signs of the fan equipment within a preset time period to discharge gas in the fan equipment.

[0035] In a fourth aspect, the present application further provides an anti-surge controller, the anti-surge controller comprising:

[0036] The operating condition information acquisition module is used to obtain the current first operating condition information of the fan device during the operation of the fan device;

[0037] a first vent valve control module, configured to generate a first vent instruction when it is determined based on the first operating condition information that the operating point of the fan equipment enters a surge warning range, the first vent instruction being used to control the first vent valve of the fan equipment to open, and the fan equipment being in an operating state;

[0038] The second vent valve control module is used to determine whether to open the second vent valve based on at least the frequency of surge signs of the fan equipment within a preset time period. The first vent valve and the second vent valve are connected in parallel.

[0039] The aforementioned anti-surge control method, fan unit, vent valve assembly, and anti-surge controller first obtain first operating condition information of the fan during operation. If, based on this first operating condition information, the operating point of the fan enters the surge warning interval, a first vent command is generated. The first vent command is used to control the opening of the first vent valve of the fan, while the fan remains in operation. By identifying whether the operating point has entered the surge warning interval, it is possible to pre-judge whether the fan may surge. Specifically, if surge is detected but not yet, the first vent valve is opened to vent the fan, thereby preventing damage to the fan from entering a surge state. This effectively reduces the frequency of surge events in the fan, eliminates the need for immediate, extreme measures such as forced fan shutdown upon every surge warning signal, and effectively avoids frequent starts and stops of the fan due to brief process disturbances. Furthermore, this solution also includes a vent valve assembly comprising a first vent valve and a second vent valve connected in parallel, and determines whether to open the second vent valve based at least on the frequency of surge signs within a preset time period. This allows the first and second vent valves to be activated when the fan exhibits frequent surge signs, achieving coordinated rapid exhaust from the first and second vent valves, thereby ensuring effective anti-surge control for the fan and guaranteeing normal production and operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 2. It is an application environment diagram of the anti-surge control method in one embodiment;

[0042] Figure 2 Schematic diagram of a flow chart of an anti-surge control method in one embodiment;

[0043] Figure 3 Schematic diagram of a wind turbine operating performance coordinate system in one embodiment;

[0044] Figure 4 Schematic diagram of a flow chart of an anti-surge control method in a specific embodiment;

[0045] Figure 5 This is a schematic diagram of a fan performance curve according to an embodiment;

[0046] Figure 6 A schematic structural diagram of a conventional anti-surge control system in one embodiment;

[0047] Figure 7 A schematic diagram of the system architecture of a wind turbine unit in one embodiment;

[0048] Figure 8 Schematic diagram of the specific structure of a fan unit in one embodiment;

[0049] Figure 9 is a structural block diagram of an anti-surge controller in one embodiment;

[0050] Figure 10 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0052] It should be noted that the terms "first," "second," etc. used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusions. The term "and / or" used in this application refers to one or any combination of multiple solutions.

[0053] The anti-surge control method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, the terminal 102 communicates with the controller 104 of the wind turbine unit through the network. The data storage system can store the data that the controller 104 needs to process. The terminal 102 can be, but is not limited to, various HMIs (Human Machine Interfaces), personal computers, laptops, smart phones, tablet computers, and Internet of Things devices. The controller 104 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services. In the industrial control scenario, the controller 104 can also be a PLC (Programmable Controllers) or other possible control devices. The specific one can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0054] In this embodiment, Figure 1The data storage system shown may also be integrated into the controller 104 or the terminal 102 , and the specific method may be determined based on actual conditions, and is not limited in this embodiment of the present specification.

[0055] For example, the controller 104 can obtain first operating condition information of the fan device in real time during operation of the fan device. The operating point corresponding to the first operating condition information of the fan device can be displayed on the display interface of the terminal 102, so that the positional relationship between the current operating point and the surge warning interval can be clearly observed. When, based on the first operating condition information, it is determined that the operating point of the fan device has entered the surge warning interval, the controller 104 can generate a first vent command to control the opening of the first vent valve, at which point the fan device is in operation. In addition, the controller 104 also determines whether to open the second vent valve based on at least the frequency of surge signs of the fan device within a preset time period, with the first vent valve and the second vent valve being connected in parallel. Of course, the controller 104 can also initiate anti-surge control of the fan device by receiving an anti-surge control command initiated by the user through the terminal 102.

[0056] In an exemplary embodiment, Figure 2 As shown, an anti-surge control method is provided, which is applied to Figure 1 The controller 104 in FIG. 1 is used as an example to illustrate the process, which includes the following steps:

[0057] Step S202: During the operation of the wind turbine device, current first operating condition information of the wind turbine device is obtained.

[0058] A fan device, such as an air compressor or blower, is a device that compresses or transports gas using input mechanical energy. The first operating condition information may be a core parameter used to describe the current operating status of the fan device when the first vent valve is not currently open. The first operating condition information may be a specific parameter value or a set of parameters. The operating condition information may include, but is not limited to, at least one of inlet pressure, outlet pressure, gas flow rate, speed, motor current, exhaust temperature, and solenoid valve current.

[0059] For example, during the operation of the fan device, the fan device can be monitored in real time, or current operating condition information of the fan device can be obtained at preset time intervals (e.g., 0.2s, 2s, etc.) to detect surge in the fan device. In some embodiments, the fan device can be pre-installed with at least one monitoring sensor for collecting operating condition information during operation.

[0060] In some embodiments, pressure sensors may be provided at the inlet and outlet of the fan equipment to monitor the inlet pressure and outlet pressure of the fan equipment in real time; the fan equipment may also be provided with a temperature sensor to monitor the exhaust temperature of the fan equipment in real time. The embodiments of this specification do not limit the number and model of monitoring sensors.

[0061] Step S204: When it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning range, a first venting instruction is generated. The first venting instruction is used to control the first vent valve of the fan equipment to open, and the fan equipment is in an operating state.

[0062] Surge is the unstable airflow phenomenon that occurs during fan operation, often accompanied by reverse flow, vibration, and noise. In severe cases, it can also cause component damage or system failure. An operating point refers to the operating state of a fan under specific operating conditions, including the specific values ​​of various operating parameters. An operating point can be a coordinate point in a one-, two-, or three-dimensional coordinate system, mapping the core parameters that characterize the fan's operating state.

[0063] In some embodiments, the operating point can be a wind turbine operating performance coordinate system (e.g. Figure 3 ), a fan performance curve may be provided in the fan performance coordinate system. The fan performance curve may be a curve used to describe the boundaries of the safe range, surge range, and surge warning range of the fan equipment operation. After obtaining the current first operating condition information, the current operating condition point may be displayed in the fan performance coordinate system based on the parameter values ​​in the first operating condition information, thereby clearly indicating the positional relationship of the current operating condition point relative to the safe range, surge range, and surge warning range. The horizontal and vertical coordinates of the fan performance coordinate system may represent different parameters, respectively.

[0064] In this embodiment, the first operating condition information can be directly used as the operating point. For example, the current value of the solenoid valve in the first operating condition information can be directly used as the operating point. Alternatively, the parameters in the first operating condition information can be processed first, and the processed parameter values ​​can be used as the operating point. For example, when the first operating condition information includes inlet pressure, outlet pressure, and exhaust temperature, the inlet pressure and outlet pressure can be differentiated to obtain the inlet and outlet pressure difference of the fan device, and then the inlet and outlet pressure difference of the fan device and the exhaust temperature can be used to calculate the gas flow value of the current fan device. The outlet pressure value and the gas flow value of the current fan device can be used as the operating point. Of course, it can be understood that the processing of the first operating condition information is not limited to the above examples, and the specific process can be determined according to actual conditions. The embodiments of this specification do not limit this.

[0065] In this embodiment, the surge warning interval is used to characterize the range of operating points where the wind turbine equipment has shown signs of surge, and may be about to surge but has not actually occurred. The surge warning interval can be a numerical range or a combination of multiple numerical ranges. In some embodiments, it can also be a coordinate interval range in a coordinate system. For example, it can be a transition area between the surge critical line and the surge warning line on the wind turbine performance curve.

[0066] Figure 3 The figure shows a schematic diagram of the wind turbine operating performance coordinate system, in which the horizontal axis is the gas flow rate, the vertical axis is the outlet pressure, and the intersection of the horizontal and vertical axes is the operating point. The solid line represents the surge critical line, and the dotted line represents the surge warning line. The area to the left of the surge critical line is the surge interval, the area to the right of the surge warning line is the safety interval, and the area between the surge critical line and the surge warning line is the surge warning interval. When the operating point of the wind turbine equipment exceeds the surge critical line, that is, the operating point enters the surge interval, it means that the wind turbine equipment has experienced surge at this time. When the operating point exceeds the surge warning line but does not exceed the surge line, that is, the operating point enters the surge warning interval, it means that the wind turbine equipment has shown signs of surge. When the operating point does not exceed the surge warning line, that is, the operating point is in the safety interval, it means that the wind turbine equipment is in a normal state.

[0067] The vent valve is an exhaust device, which is usually installed on the outlet pipe of the fan equipment to discharge the gas inside the fan equipment. In this embodiment, a first vent valve and a second vent valve are provided in parallel. The first vent valve and the second vent valve can be vent valves of different types or vent valves of the same type. For example, the first vent valve can be a solenoid valve, and the second vent valve can be any one of an electric butterfly valve, a gate valve, a proportional valve, etc. Furthermore, the flow rates of the first vent valve and the second vent valve can be different so as to perform step control, or the flow rates of the first vent valve and the second vent valve can be the same to expand the exhaust volume. The specific types of the second vent valve and the first vent valve can be selected according to actual needs, and the embodiments of this specification do not limit this.

[0068] For example, after obtaining the current first operating condition information of the fan equipment, the operating point corresponding to the first operating condition information can be further determined. If the operating point enters the surge warning range, it means that the fan equipment is currently experiencing surge signs and surge pre-control is required. At this time, a first vent command is generated and issued to the first vent valve to control the opening of the first vent valve, thereby achieving the purpose of exhausting the fan equipment.

[0069] In this embodiment, the fan equipment is not immediately slowed down and shut down after the first vent valve is opened. Instead, the fan equipment continues to operate to ensure normal production and operating efficiency. Further, the operating condition or the frequency of surge signs in the fan equipment within a preset time period is determined to determine whether a speed reduction or shutdown is necessary. If the operating point of the fan equipment has not left the surge warning range or has entered the surge range after the first vent valve is opened, the fan equipment may be controlled to slow down and shut down.

[0070] In this embodiment, the judgment of whether the operating point has entered the surge warning interval can be a numerical judgment, or it can be judged after mapping the operating point and the surge warning interval into a coordinate system, or it can be other possible comparison methods. The specific method can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0071] In some embodiments, the first venting instruction can also be used to control the fan device to increase its speed. That is, the fan device is controlled to increase its speed according to a preset ratio, such as increasing it by 1%-3% based on the current speed. Of course, controlling the fan device to increase its speed is not necessary. Increasing the speed of the fan device can help the fan device to more efficiently escape the surge warning state. The specific speed increase ratio can be set according to actual needs, and the embodiments of this specification do not limit this. It should be noted that the increased speed of the fan device cannot exceed the maximum speed of the fan device.

[0072] In this embodiment, the first venting instruction can be generated by the controller, or it can be generated based on the operation of the terminal user and then sent to the controller, or it can be generated in other possible ways. The specific method can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0073] In this embodiment, controlling the vent valve to open and increasing the fan speed can be embedded in the same vent instruction or in separate instructions. That is, the first vent instruction can be further divided into two sub-instructions, one for controlling the first vent valve to open and the other for increasing the fan speed. These two sub-instructions can be sent to the first vent valve and the fan simultaneously or separately, meaning the two sub-instructions can be issued at the same or different times.

[0074] Step S206: determining whether to open the second vent valve based on at least the frequency of surge signs of the fan equipment within a preset time period, wherein the first vent valve and the second vent valve are connected in parallel.

[0075] The frequency of surge signs within a preset time period can represent the time interval between two or more consecutive surge signs, or the number of surge signs that occur within a period of time. This determination can be made, for example, by determining whether the time interval between the nth surge sign and the n+Xth surge sign is less than Y seconds, or whether the number of surge signs that occur within Y seconds is greater than or equal to X. n, X, and Y are positive integers greater than or equal to 1. The specific values ​​can be determined based on actual conditions and are not limited in this embodiment.

[0076] The above-mentioned preset time period can be a pre-set time period, such as 60 seconds or other fixed durations, which can be determined according to actual needs and is not limited in the embodiments of this specification.

[0077] In this embodiment, the presence of surge signs refers to the fan equipment's operating point entering the surge warning range. The surge sign frequency can also be understood as the number of times the fan equipment's operating point enters the surge warning range within a preset time period. The presence of surge signs in the fan equipment indicates that the fan equipment has experienced abnormal fluctuations but has not yet completely lost stability, such as intermittent pressure fluctuations or localized airflow disturbances.

[0078] In this embodiment, the fan equipment does not need to be shut down and alarmed immediately when signs of surge appear. However, if the fan equipment frequently shows signs of surge, simply opening the first vent valve for exhaust each time may not be able to fundamentally solve the problem. Surge signs may appear frequently in the future. At this time, the fan equipment may have a fault and need to be shut down for inspection and maintenance. Therefore, in this embodiment, the frequency of surge signs of the fan equipment within a preset time period will be further judged to determine whether the fan equipment is in an abnormal state, so as to determine whether to open the second vent valve.

[0079] In this embodiment, first, current first operating condition information of the fan device is obtained. If, based on this first operating condition information, the fan device's operating point is determined to have entered the surge warning range, a first vent command is generated. The first vent command is used to control the opening of the fan device's first vent valve and maintain continued operation of the fan device. This eliminates the need to immediately take extreme actions such as shutting down the fan or increasing its speed every time a surge warning signal is detected. This effectively avoids frequent starts and stops of the fan device due to brief process disturbances, thereby ensuring normal production and operating efficiency of the fan device. Furthermore, this embodiment provides a vent valve assembly comprising a first vent valve and a second vent valve in parallel. Whether to open the second vent valve is determined based on at least the frequency of surge signs within a preset time period. This allows the first and second vent valves to be activated simultaneously when the fan device exhibits frequent surge signs, achieving coordinated exhaust from the first and second vent valves and ensuring effective anti-surge control of the fan device.

[0080] In some embodiments, if the frequency of occurrence of surge signs is greater than or equal to a preset frequency threshold, a second vent instruction is generated; wherein the second vent instruction is used to control the opening of the second vent valve.

[0081] The preset frequency threshold may be a baseline value for the frequency of surge signs within a preset time period, such as three times or another fixed number, and may be used to determine whether surge signs occur frequently. Specifically, if the frequency of surge signs within the preset time period is greater than or equal to the preset frequency threshold, the surge signs are considered to be occurring relatively frequently. Otherwise, the surge signs are considered to be occurring infrequently, falling within an allowable range.

[0082] For example, assuming the threshold for the frequency of surge signs within 60 seconds is set at 3, if the fan equipment actually exhibits surge signs 3 or more times within 60 seconds, it indicates that the fan equipment has frequently experienced surge signs in a short period of time. In this case, surge energy accumulates, making it difficult to quickly reduce the fan equipment pipeline pressure by relying solely on a single vent valve. Therefore, in this embodiment, the second vent valve is further activated to address this situation. The coordinated exhaust of the first and second vent valves can achieve the purpose of rapid pressure relief, avoiding the accumulation of surge energy due to frequent surge, which may lead to the fan equipment eventually surging and causing damage to the equipment.

[0083] For example, after obtaining the frequency of surge signs within a preset time period of the fan device, the frequency of surge signs can be further compared with a preset frequency threshold. If the frequency of surge signs is greater than or equal to the preset frequency threshold, a second vent command is generated to control the activation of the second vent valve. Simultaneously, a shutdown command for the fan device is generated to control the fan device to slow down and shut down.

[0084] In some embodiments, in addition to comparing the frequency of surge signs with a preset frequency threshold, the frequency of surge signs can also be determined based on the interval between their occurrence. Specifically, if a wind turbine has a history of surge signs, the time interval between the historical surge sign occurrence and the current surge sign occurrence can be obtained. If this time interval is less than a preset interval threshold, the wind turbine is considered to be experiencing frequent surge signs. For example, if the interval between the third surge sign and the first surge sign is less than 60 seconds, the wind turbine is considered to be experiencing frequent surge signs. It should be noted that to avoid noise interference, such as transient airflow disturbances, consecutive surge signs, such as the second and first surge signs, may not be considered. This is because even if the interval between consecutive surge signs is less than the preset interval threshold, it may still be caused by noise interference. Of course, if there is a need to detect consecutive surge signs in an actual application, such detection may be performed, and this is not a limitation in the embodiments of this specification.

[0085] In some embodiments, when a fan device frequently exhibits signs of surge, in addition to opening the first and second vent valves, the fan device's rotational speed may be further reduced until the fan device shuts down to ensure the safety of the fan device. Of course, if the surge warning state is no longer in effect after the first and second vent valves are opened, the fan device may continue to operate. The specific configuration can be tailored to the actual situation and is not limited in this embodiment.

[0086] In some embodiments, if the surge indication occurrence frequency is less than a preset occurrence frequency threshold, the second vent valve is kept closed.

[0087] In this embodiment, if the frequency of surge signs is less than a preset frequency threshold, it means that the fan equipment has not experienced surge signs frequently within a preset time period. For example, if surge signs only occur twice or even once within 60 seconds, this is considered a recoverable mild airflow fluctuation. In this case, only the first vent valve with a smaller exhaust flow rate can be activated for pressure relief regulation, while the second vent valve remains closed. Meanwhile, the fan equipment remains in operation, avoiding unnecessary shutdowns and ensuring normal operation and production efficiency of the fan equipment.

[0088] In this embodiment, if the frequency of occurrence of signs of surge is less than a preset frequency threshold, the corresponding operating point can be further determined in real time based on the operating information of the fan equipment until the operating point is in a safe range. The operating point being in the safe range means that the fan equipment has returned to normal at this time, and the first vent valve can be closed, and the fan equipment can continue to operate normally. If the operating point is moving in the direction of the safe range but has not yet reached the safe range, the first vent valve can be continuously opened, or the second vent valve can be opened at the same time to discharge the fluid as soon as possible until the operating point is in the safe range, and then the first vent valve and the second vent valve can be closed, and the fan equipment can continue to operate normally. It can be understood that whether to continue to maintain the normal operation of the fan equipment needs to be determined based on the changing state of the operating point, and it is not necessary to immediately reduce the speed and shut down when signs of surge appear.

[0089] In some embodiments, the exhaust flow rate of the second vent valve is greater than the exhaust flow rate of the first vent valve, wherein the first vent instruction is used to control the first vent valve to fully open.

[0090] In this embodiment, the exhaust flow rate of the second vent valve can be greater than that of the first vent valve. It is understood that the first vent valve opens when the fan equipment's operating point enters the surge warning range, while the second vent valve opens when the fan equipment frequently exhibits signs of surge. Considering that the first fan equipment will be opened more frequently than the second vent valve, setting the exhaust flow rate of the second vent valve greater than that of the first vent valve can avoid overload losses caused by the low-flow vent valve and energy waste caused by the frequent opening of the high-flow vent valve.

[0091] In this embodiment, the first vent instruction can control the full opening of the first vent valve. When the first valve is fully open, its flow area reaches its maximum design value, and the exhaust flow rate per unit time reaches its maximum, which can quickly exhaust the gas in the fan device, thereby quickly releasing the pressure in the fan device and quickly restoring the fan device to normal state.

[0092] In some embodiments, the second vent instruction is used to control the second vent valve to fully open; or, the second vent instruction is used to control the second vent valve to open according to the obtained valve opening of the second vent valve.

[0093] In this embodiment, the second vent command can control the second vent valve to fully open to maximize the exhaust flow rate of the second vent valve, thereby quickly exhausting the gas in the fan device. Of course, the second vent command can also control the opening of the second vent valve based on the obtained valve opening of the second vent valve. In some embodiments, the valve opening can be matched to the flow rate of gas to be exhausted from the fan device, thereby ensuring that the gas in the fan device is completely exhausted. Of course, the specific valve opening can also be determined based on actual needs, and this embodiment of the present specification does not limit this.

[0094] In some embodiments, after starting the first vent valve, the method further includes: obtaining the current second operating condition information of the fan equipment; when it is determined based on the second operating condition information that the operating point of the fan equipment is in a safe range, closing the first vent valve and controlling the fan equipment to continue operating.

[0095] Among them, the second operating condition information can be a core parameter used to describe the current operating status of the fan equipment when the first vent valve is open. It can be a specific parameter value or a set of parameters. The operating condition information can include but is not limited to at least one of inlet pressure, outlet pressure, gas flow, speed, motor current, exhaust temperature, solenoid valve current, etc.

[0096] In this embodiment, the second operating condition information can be obtained immediately after the first vent valve is opened, or after the first vent valve is opened and operated for a period of time, or continuously at a certain time interval after the first vent valve is opened. The specific information can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0097] In some embodiments, after the first vent valve is activated, the current second operating condition information of the wind turbine device can be obtained in real time, and the operating point corresponding to the second operating condition information can be further determined. If the operating point enters a safe range, it means that the wind turbine device has returned to normal, i.e., the surge signs have disappeared. At this time, the first vent valve can be controlled to close, and the wind turbine device can be controlled to continue operation.

[0098] In some embodiments, if the operating point has not entered the safe range, the operating condition information can be obtained again after a period of time, and the second operating condition information can be updated. The operating condition information can also be obtained again immediately and the second operating condition information can be updated. Based on the updated second operating condition information, it is determined again whether the current operating point of the fan equipment is in the safe range, and the above steps are repeated until the cycle stop condition is met. Among them, the cycle stop condition can be that the current number of cycles reaches the preset number of cycles, or that the operating point enters the safe range, that is, the fan equipment returns to normal state, which can be set specifically according to actual conditions. The preset number of cycles can be a pre-set number of cycles, and its specific value can also be determined according to actual conditions. The embodiments of this specification do not limit this.

[0099] In some embodiments, after starting the first vent valve, the method further includes: obtaining the current second operating condition information of the fan equipment; when it is determined based on the second operating condition information that the operating point of the fan equipment moves toward a safe range, closing the first vent valve after the first vent valve has been running for a preset period of time, and controlling the fan equipment to continue operating.

[0100] In this embodiment, the movement of the operating point toward the safe range means that the fan equipment is approaching a normal state, that is, the fan equipment is in the process of returning to normal state and has not yet fully returned to normal state. The preset duration is the time required for the operating point to move to the safe range. In actual applications, the preset duration can be an empirical value or a simulation calculation value, such as 4 seconds, 5 seconds, 10 seconds, 2 minutes, etc. Since the activation of the first vent does not affect the normal operation of the fan equipment, but may reduce the operating efficiency of the fan equipment, the preset duration can also be set slightly longer to ensure that it is sufficient for the operating point to enter the safe range. The specific value of the preset duration can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0101] In some embodiments, based on the current second operating condition information of the fan device, it can be determined whether the operating point of the fan device has moved into a safe range. If the operating point is moving into the safe range, the first vent valve is closed after the first vent valve has been operated for a preset time. Since the preset time is the time required for the operating point to move into the safe range, it can be ensured that the operating point is within the safe range after the first vent valve has been operated for the preset time, meaning that the fan device has returned to normal operation. At this point, the fan device can be controlled to continue operating.

[0102] In some embodiments, the anti-surge control method may further include: controlling the second vent valve to start when it is determined based on the second operating condition information that the operating point of the fan equipment has not moved to the safe range; generating a shutdown instruction for the fan equipment; the shutdown instruction is used to control the fan equipment to slow down and shut down.

[0103] In this embodiment, if the operating point is determined to have not moved into the safe range based on the current second operating condition information of the fan equipment, this means that the exhaust capacity of the first vent valve is insufficient to eliminate signs of surge, and the fan equipment still exhibits signs of surge. In this case, the second vent valve can be activated to provide coordinated exhaust and pressure relief. Failure of the operating point to move into the safe range can be further categorized into two situations: one in which the operating point remains in the surge warning range, and the other in which the operating point is moving into the surge range. In either case, the current opening of the first vent valve has not achieved surge control, and the second vent valve needs to be opened to assist in exhaust.

[0104] In this embodiment, after the second vent valve is opened, the rotation speed of the fan equipment can be reduced until the fan equipment is shut down, so as to eliminate the mechanical conditions causing surge from the source, thereby ensuring the safety of the fan equipment.

[0105] In some embodiments, when the gas flow rate within the fan device is high, the operating point may quickly enter the surge range. This entry into the surge range indicates that the fan device has experienced surge, which can cause complete instability of the fan device, resulting in severe pressure fluctuations, airflow backflow, and other phenomena. In this case, a third vent command can be generated to control the opening of the first and second vent valves. A shutdown command for the fan device can also be generated to control the fan device to slow down and shut down.

[0106] In this embodiment, when the fan equipment's operating point enters the surge range, rapid exhaust and pressure relief cannot be achieved by relying solely on a single vent valve. Therefore, this embodiment activates both the first and second vent valves to achieve dual-valve coordinated exhaust, maximizing exhaust capacity and achieving rapid pressure relief. Simultaneously, the fan equipment is controlled to slow down and shut down to prevent damage.

[0107] In this embodiment, the third vent instruction may include two sub-instructions, which are used to control the start-up of the first vent valve and the second vent valve respectively. The two sub-instructions may be sent to the corresponding vent valves at the same time or separately.

[0108] It should be noted that the operating point usually must first pass through the surge warning zone before entering the surge zone. Therefore, a vent command is generally generated to open the first vent valve. Then, after confirming that it has entered the surge zone, a vent command is generated to open the second vent valve. Under some extreme operating conditions, if the operating point moves rapidly from the safe zone to the surge zone, it may enter the surge zone before the surge warning zone is determined. In this case, a third vent command can be generated to control the opening of the first and second vent valves. However, this extreme operating condition rarely occurs in actual operation.

[0109] In some embodiments, before determining whether to open the second vent valve based at least on the frequency of surge signs of the fan equipment within a preset time period, it also includes: obtaining the start-up frequency of the first vent valve within the preset time period; and using the start-up frequency as the frequency of surge signs of the fan equipment within the preset time period.

[0110] Among them, the starting frequency can refer to the number of times the first vent valve is started. It can be understood that the first vent valve will be started when the fan equipment shows signs of surge. Therefore, using the starting frequency of the first vent valve to characterize the frequency of surge signs of the fan equipment can effectively avoid errors in the frequency of surge signs caused by noise interference such as instantaneous disturbances of airflow.

[0111] In some embodiments, the activation frequency of the first vent valve within a preset time period can be obtained and used as the frequency of surge indications of the fan device within the preset time period for subsequent determination of the frequency threshold. Of course, the frequency threshold corresponds to the activation frequency threshold of the first vent valve within the preset time period. The activation frequency threshold of the first vent valve within the preset time period can be set according to actual needs.

[0112] In some embodiments, the preset time period can be calculated by adding the time required for the first vent valve to activate, the time required for closing, the duration of continuous operation, and the shortest time interval between consecutive surge signs. For example, if the first vent valve requires 2 seconds to activate, 3 seconds to close, and 5 seconds to operate, and the shortest time interval between consecutive surge signs is 10 seconds, then the preset time period is 20 seconds, which can also be understood as the time interval between consecutive surge signs. Similarly, the time interval between x surge signs is 20*x seconds. For example, if x is 3, the time interval between the n+xth (n+3) surge sign and the nth surge sign is 60 seconds, where n is greater than or equal to 1. If the time interval is less than or equal to 40 seconds, or if surge signs occur more than three times within 40 seconds, the wind turbine equipment may be considered to have frequent surge signs. The specific value of the preset time period can be set based on implementation needs and is not limited in this embodiment.

[0113] In some embodiments, when it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning interval, before generating the first venting instruction, it also includes: determining the critical line for surge occurrence of the fan equipment; superimposing the surge margin on the basis of the critical line to obtain the surge warning interval.

[0114] Among them, the critical line can be understood as the boundary line where the fan equipment surges, specifically Figure 3 The surge margin is a safety buffer zone. By adding the surge margin to the surge margin, the surge warning line of the wind turbine equipment can be obtained. The surge warning line can be understood as the boundary line where the wind turbine equipment has signs of surge. The wind turbine equipment has not actually experienced surge. Figure 3 Surge warning line in.

[0115] In some embodiments, a fan performance curve for a wind turbine device can be pre-derived based on simulation or testing. Specifically, a simulation model is established to simulate the surge phenomenon of the wind turbine device and collect simulated operating condition information during surge. Based on this simulated operating condition information, a corresponding surge threshold line is drawn. A preset surge margin, such as a 3% to 5% gas flow reserve, is added to the surge threshold line to generate a surge warning line. The specific value of the surge margin can be determined based on actual conditions and is not limited in this embodiment.

[0116] In a specific embodiment, if Figure 4 As shown, taking the fan equipment as an air compressor as an example, the implementation steps of the anti-surge control method may include:

[0117] S1: During the operation of the air compressor, first operating condition information of the air compressor, such as outlet pressure and gas flow, is obtained, and an actual operating point of the air compressor is determined based on the first operating condition information;

[0118] S2: When the actual operating point enters the surge range, the first vent valve of the air compressor and the second vent valve connected in parallel with the first vent valve are started, and the speed is reduced and the machine is shut down; wherein the first vent valve is a solenoid valve, and the second vent valve is any one of an electric butterfly valve, a gate valve, and a proportional valve, and the exhaust flow rate of the second vent valve is greater than the exhaust flow rate of the first vent valve;

[0119] S3: When the actual operating point enters the surge warning range, quickly open the first vent valve and increase the air compressor speed, generally by 1% to 3%, but not exceeding the air compressor's maximum speed. At this time, the air compressor is in operation and does not directly reduce speed and stop;

[0120] S4: Counting the number of times the first vent valve is started within a preset time period, such as 60 seconds, as the frequency of surge signs of the air compressor within the preset time period;

[0121] S5: Determine whether the frequency of surge signs is greater than or equal to a preset frequency threshold;

[0122] S6: If yes, it means that the air compressor has frequent surge signs within the preset time period, such as Figure 5 As shown by curve A in , the second vent valve is opened and the machine is shut down at reduced speed;

[0123] S7: If no, it means that the air compressor has not shown signs of frequent surge within the preset time period, but only slight air flow fluctuations, such as Figure 5 As shown by curve B in , keep the second vent valve closed;

[0124] S8: After starting the first vent valve, obtaining second operating condition information of the air compressor, and determining a current actual operating point of the air compressor based on the second operating condition information;

[0125] S9: Determine whether the current actual operating point of the air compressor is moving towards the safe range;

[0126] S10: If yes, then after the first vent valve operates for a preset time, such as 5 seconds, the first vent valve is closed, and the air compressor continues to operate normally;

[0127] S11: If not, open the second vent valve and reduce the speed to stop;

[0128] S12: When the operating point of the air compressor enters the safe range or the air compressor is in a shutdown state, the first vent valve and the second vent valve are closed.

[0129] In this embodiment, current first operating condition information of the air compressor is first obtained. If, based on this first operating condition information, the air compressor's operating point is determined to have entered the surge warning range, a first venting command is generated. The first venting command is used to control the opening of the air compressor's first vent valve, maintaining the air compressor in operation. By identifying whether the operating point has entered the surge warning range, it is possible to pre-determine whether the air compressor is likely to experience surge. Specifically, if surge is detected but not yet, the first vent valve is opened to vent the air compressor, thereby preventing damage to the equipment caused by the compressor entering a surge state. This effectively reduces the frequency of compressor surges and eliminates the need to immediately shut down the air compressor every time a surge warning signal is detected. This effectively avoids the frequent startup and shutdown of the air compressor caused by brief process disturbances. Furthermore, this embodiment includes a vent valve assembly comprising a first vent valve and a second vent valve connected in parallel. Whether to open the second vent valve is determined based at least on the frequency of surge signs within a preset time period. In this way, when the air compressor shows signs of surge more frequently, the first vent valve and the second vent valve can be started to achieve the purpose of coordinated rapid exhaust of the first vent valve and the second vent valve, thereby ensuring the anti-surge control effect of the air compressor, thereby ensuring the normal production and working efficiency of the air compressor.

[0130] Figure 6 The schematic diagram shows the structure of a traditional single vent valve for anti-surge control. Here, vent valve 20 is installed on the outlet pipeline of the fan equipment, and is controlled by solenoid valve 10 to achieve exhaust and pressure relief. However, in actual applications, process variations in gas-consuming equipment may cause frequent and slight pressure fluctuations at the gas-consuming end. If pressure fluctuations occur in the surge warning zone, the fan equipment will frequently shut down, thereby affecting normal production and operating efficiency of the fan equipment.

[0131] Based on this, in some embodiments, such as Figure 7As shown, a fan unit is provided, which includes: at least one fan device, a first vent valve, a second vent valve and a controller; the controller is connected to the first vent valve and the second vent valve; the first vent valve and the second vent valve are both used for exhaust; the controller is used to obtain the current first operating condition information of the fan device during the operation of the fan device; when it is determined based on the first operating condition information that the operating point of the fan device enters the surge warning interval, a first vent instruction is generated, and the first vent instruction is used to control the first vent valve of the fan device to open, and the fan device is in an operating state; at least according to the frequency of surge signs of the fan device within a preset time period, it is judged whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

[0132] Figure 8 A schematic diagram of the specific structure of a fan unit is shown, in which a controller 104 is connected to a fan device 106, a first vent valve 108, and a second vent valve 110. Both the first vent valve 108 and the second vent valve 110 are disposed on the outlet pipeline of the fan device 106 and are connected in parallel. During the operation of the fan device 106, the controller 104 can obtain first operating condition information of the fan device 106 in real time. When the operating point of the fan device 106 is determined to have entered the surge warning range based on the first operating condition information, a first vent command is generated to control the opening of the first vent valve 108. At this time, the fan device 106 is in operation. In addition, the controller 104 also determines whether to open the second vent valve 110 based on at least the frequency of surge signs in the fan device 106 within a preset time period.

[0133] In some embodiments, if the frequency of surge signs is greater than or equal to a preset frequency threshold, a second vent instruction is generated; wherein the second vent instruction is used to control the opening of the second vent valve 110; a shutdown instruction of the fan device 106 is generated, and the shutdown instruction is used to control the fan device 106 to slow down and shut down.

[0134] In some embodiments, the exhaust flow rate of the second purge valve 110 is greater than the exhaust flow rate of the first purge valve 108 , wherein the first purge instruction is used to control the first purge valve 108 to be fully open.

[0135] In some embodiments, the second vent instruction is used to control the second vent valve 110 to be fully opened; or, the second vent instruction is used to control the second vent valve 110 to be opened according to the obtained valve opening.

[0136] In some embodiments, if the surge sign occurrence frequency is less than a preset occurrence frequency threshold, the second vent valve 110 is kept closed.

[0137] In some embodiments, the first venting instruction is further used to control the fan device 106 to increase its rotation speed.

[0138] In some embodiments, after starting the first vent valve 108, the current second operating condition information of the fan device 106 is obtained; when it is determined based on the second operating condition information that the operating point of the fan device 106 is in a safe range, the first vent valve 108 is closed and the fan device 106 is controlled to continue operating.

[0139] In some embodiments, after starting the first vent valve 108, the current second operating condition information of the fan equipment 106 is obtained; when it is determined based on the second operating condition information that the current operating point of the fan equipment 106 moves toward the safe range, the first vent valve 108 is closed after the first vent valve 108 continues to operate for a preset period of time, and the fan equipment 106 is controlled to continue operating.

[0140] In some embodiments, when it is determined based on the second operating condition information that the operating point of the fan device 106 has not moved to the safe range, the second vent valve 110 is controlled to start; a shutdown instruction of the fan device 106 is generated; the shutdown instruction is used to control the fan device 106 to slow down and shut down.

[0141] In some embodiments, before determining whether to open the second vent valve 110 based at least on the frequency of surge signs of the fan device 106 within the preset time period, the start-up frequency of the first vent valve 108 within the preset time period is obtained; and the start-up frequency is used as the frequency of surge signs of the fan device 106 within the preset time period.

[0142] In some embodiments, when it is determined based on the first operating condition information that the operating point of the wind turbine device 106 enters the surge warning interval, before generating the first venting instruction, the critical line of the wind turbine device 106 for surge is determined; the surge margin is superimposed on the critical line to obtain the surge warning interval.

[0143] In some embodiments, a vent valve group is also provided, which is arranged at the outlet end of the fan equipment, including: a first vent valve and a second vent valve, wherein the first vent valve is used to open when it is determined that the operating point of the fan equipment enters a surge warning interval based on first operating condition information during the operation of the fan equipment, so as to discharge the gas in the fan equipment; the second vent valve is used to determine whether to open at least based on the frequency of surge signs of the fan equipment within a preset time period, so as to discharge the gas in the fan equipment.

[0144] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of the steps or stages in other steps or other steps. It is understandable that the various steps in different embodiments can be freely combined as needed, and the various non-contradictory schemes formed by the combination all fall within the scope of protection of this application.

[0145] Based on the same inventive concept, embodiments of the present application further provide an anti-surge controller for implementing the aforementioned anti-surge control method. The solution provided by the anti-surge controller is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more anti-surge controller embodiments provided below can be found in the aforementioned limitations of the anti-surge control method and will not be further elaborated here.

[0146] In some embodiments, as Figure 9 As shown, an anti-surge controller is provided, comprising:

[0147] The operating condition information acquisition module 902 is used to obtain the current first operating condition information of the wind turbine device during the operation of the wind turbine device;

[0148] A first vent valve control module 904 is configured to generate a first vent instruction when it is determined based on the first operating condition information that the operating point of the fan device has entered a surge warning range. The first vent instruction is configured to control the first vent valve of the fan device to open, thereby putting the fan device into operation.

[0149] The second vent valve control module 906 is used to determine whether to open the second vent valve based on at least the frequency of surge signs of the fan equipment within a preset time period. The first vent valve and the second vent valve are connected in parallel.

[0150] In some embodiments, the anti-surge controller is also used to: generate a second vent instruction if the frequency of surge signs is greater than or equal to a preset frequency threshold; the second vent instruction is used to control the opening of the second vent valve; generate a shutdown instruction for the fan equipment, and the shutdown instruction is used to control the fan equipment to slow down and shut down.

[0151] In some embodiments, the exhaust flow rate of the second vent valve is greater than the exhaust flow rate of the first vent valve, wherein the first vent instruction is used to control the first vent valve to fully open.

[0152] In some embodiments, the second vent instruction is used to control the second vent valve to fully open; or, the second vent instruction is used to control the second vent valve to open according to the obtained valve opening of the second vent valve.

[0153] In some embodiments, the anti-surge controller is further configured to: keep the second vent valve closed if the frequency of occurrence of the surge sign is less than a preset frequency threshold.

[0154] In some embodiments, the first venting instruction is further used to control the fan device to increase the rotation speed.

[0155] In some embodiments, the anti-surge controller is also used to: obtain the current second operating condition information of the fan equipment; when it is determined based on the second operating condition information that the operating point of the fan equipment is in a safe range, close the first vent valve and control the fan equipment to continue operating.

[0156] In some embodiments, the anti-surge controller is also used to: obtain the current second operating condition information of the fan equipment; when it is determined based on the second operating condition information that the current operating point of the fan equipment is moving towards the safe range, the first vent valve is closed after the first vent valve has been running for a preset period of time, and the fan equipment is controlled to continue operating.

[0157] In some embodiments, the anti-surge controller is also used to: control the start-up of the second vent valve when it is determined based on the second operating condition information that the operating point of the fan equipment has not moved to the safe range; generate a shutdown instruction for the fan equipment, and the shutdown instruction is used to control the fan equipment to slow down and shut down.

[0158] In some embodiments, the anti-surge controller is further configured to: obtain a start-up frequency of the first vent valve within a preset time period; and use the start-up frequency as a frequency of surge signs of the fan device within the preset time period.

[0159] In some embodiments, the anti-surge controller is further configured to: determine a critical line at which surge occurs in the wind turbine equipment; and superimpose a surge margin on the critical line to obtain a surge warning interval.

[0160] Each module in the anti-surge controller can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a memory in the computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0161] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 10 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the computer device is used to store anti-surge control data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an anti-surge control method is implemented.

[0162] Those skilled in the art will understand that Figure 10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0163] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: during the operation of the fan device, obtaining the current first operating condition information of the fan device; when it is determined based on the first operating condition information that the operating point of the fan device enters the surge warning interval, generating a first vent instruction, the first vent instruction is used to control the first vent valve of the fan device to open, and the fan device is in an operating state; at least based on the frequency of surge signs of the fan device within a preset time period, judging whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

[0164] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: during the operation of the fan equipment, the current first operating condition information of the fan equipment is obtained; when it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning interval, a first vent instruction is generated, and the first vent instruction is used to control the first vent valve of the fan equipment to open, and the fan equipment is in an operating state; at least based on the frequency of surge signs of the fan equipment within a preset time period, it is determined whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

[0165] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps: during the operation of the fan device, obtaining current first operating condition information of the fan device; when it is determined based on the first operating condition information that the operating point of the fan device enters a surge warning interval, generating a first vent instruction, the first vent instruction being used to control a first vent valve of the fan device to open, and the fan device being in an operating state; and judging whether to open a second vent valve based on at least the frequency of surge signs of the fan device within a preset time period, the first vent valve and the second vent valve being connected in parallel.

[0166] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0167] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0168] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0169] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. An anti-surge control method, characterized in that: The method comprises: During the operation of the fan device, obtaining current first operating condition information of the fan device; When it is determined based on the first operating condition information that the operating point of the fan device enters a surge warning range, a first venting instruction is generated, wherein the first venting instruction is used to control a first vent valve of the fan device to open, and the fan device is in an operating state; Whether to open the second vent valve is determined at least based on the frequency of surge signs of the fan equipment within a preset time period, and the first vent valve and the second vent valve are connected in parallel.

2. The method according to claim 1, characterized in that The method further comprises: If the surge sign occurrence frequency is greater than or equal to a preset occurrence frequency threshold, a second venting instruction is generated; wherein the second venting instruction is used to control the second vent valve to open; A shutdown instruction for the fan device is generated, where the shutdown instruction is used to control the fan device to slow down and shut down.

3. The method according to claim 1 or 2, characterized in that The exhaust flow rate of the second vent valve is greater than the exhaust flow rate of the first vent valve, wherein the first vent instruction is used to control the first vent valve to be fully opened.

4. The method according to claim 2, characterized in that The second venting instruction is used to control the second venting valve to fully open; Alternatively, the second vent instruction is used to control the opening of the second vent valve according to the obtained valve opening of the second vent valve.

5. The method according to claim 1, wherein The method further includes: if the surge indication occurrence frequency is less than a preset occurrence frequency threshold, keeping the second vent valve closed.

6. The method according to claim 1, characterized in that The first venting instruction is also used to control the fan device to increase the rotation speed.

7. The method according to claim 1, characterized in that After starting the first vent valve, the method further comprises: Obtaining current second operating condition information of the wind turbine device; When it is determined based on the second operating condition information that the operating point of the fan equipment is in a safe range, the first vent valve is closed and the fan equipment is controlled to continue operating.

8. The method according to claim 1, characterized in that After starting the first vent valve, the method further comprises: Obtaining current second operating condition information of the wind turbine device; When it is determined based on the second operating condition information that the operating point of the fan equipment moves toward the safe range, the first vent valve is closed after the first vent valve continues to operate for a preset time, and the fan equipment is controlled to continue operating.

9. The method according to claim 7 or 8, characterized in that The method further comprises: When it is determined based on the second operating condition information that the operating point of the wind turbine equipment has not moved into the safe range, controlling the second vent valve to start; A shutdown instruction for the fan device is generated, where the shutdown instruction is used to control the fan device to slow down and shut down.

10. The method according to claim 1, characterized in that Before determining whether to open the second vent valve based on at least the frequency of surge signs of the fan device within a preset time period, the method further includes: Obtaining a start-up frequency of the first vent valve within a preset time period; The startup frequency is used as the frequency of surge signs of the fan equipment within the preset time period.

11. The method according to claim 1, wherein When it is determined based on the first operating condition information that the operating point of the wind turbine device enters a surge warning range, before generating a first venting instruction, the method further includes: Determining a critical line at which surge occurs in the fan equipment; The surge margin is superimposed on the critical line to obtain the surge warning range.

12. A fan unit, characterized in that: include: At least one fan device, a first vent valve, a second vent valve and a controller; the controller is connected to the first vent valve and the second vent valve; The first vent valve and the second vent valve are both used for exhausting gas; The controller is used to obtain the current first operating condition information of the fan equipment during the operation of the fan equipment; when it is determined based on the first operating condition information that the operating point of the fan equipment enters the surge warning interval, generate a first vent instruction, and the first vent instruction is used to control the opening of the first vent valve of the fan equipment, and the fan equipment is in an operating state; at least based on the frequency of surge signs of the fan equipment within a preset time period, determine whether to open the second vent valve, and the first vent valve and the second vent valve are connected in parallel.

13. A vent valve group, which is arranged at the outlet end of a fan device, characterized in that: include: A first vent valve and a second vent valve, wherein The first vent valve is configured to open when it is determined based on first operating condition information during the operation of the fan device that the operating point of the fan device enters a surge warning interval, so as to discharge gas in the fan device; The second vent valve is used to determine whether to open based on at least the frequency of surge signs of the fan device within a preset time period to discharge gas in the fan device.

14. An anti-surge controller, characterized in that: The anti-surge controller comprises: An operating condition information acquisition module is used to acquire current first operating condition information of the wind turbine device during operation of the wind turbine device; a first vent valve control module, configured to generate a first vent instruction when it is determined based on the first operating condition information that the operating point of the fan device enters a surge warning range, wherein the first vent instruction is used to control the first vent valve of the fan device to open, and the fan device is in an operating state; The second vent valve control module is used to determine whether to open the second vent valve based on at least the frequency of surge signs of the fan equipment within a preset time period, and the first vent valve and the second vent valve are connected in parallel.

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