Automatic air supply device for eliminating abnormal vibration of top cover and control method of automatic air supply device

Abstract

The invention provides an automatic air supplementing device for eliminating abnormal vibration of a top cover and a control method thereof.The automatic air supplementing device comprises an air inlet pipeline and at least two air supplementing pipelines, each air supplementing pipeline comprises an air inlet end and an air outlet end, and one end of each air inlet pipeline is used for being connected with an external air source; the other end of the gas inlet pipeline is connected with the gas inlet end of each gas supplementing pipeline, the gas outlet end of at least one gas supplementing pipeline is arranged close to a top cover of the water turbine unit, and the gas outlet end of at least one gas supplementing pipeline is arranged close to a draft tube inlet of the water turbine unit, so that gas flowing out of the gas supplementing pipelines can provide gas flow for the top cover and a rotating wheel. Air flow can also be provided for the connecting position of the draft tube inlet and the runner chamber, the flowing of the air flow eliminates the problem that the rotating frequency of the runner is similar to the water flow frequency in the unit, and then the resonance phenomenon is eliminated, so that the runner frequency abnormity caused by resonance of the runner is avoided, and the abnormal vibration of the top cover is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of turbine operation of a hydropower station, and in particular to an automatic air supply device for eliminating abnormal vibration of a top cover and a control method thereof. Background Art

[0002] With the long-term operation of the pumped-storage power station, it was found that when the turbine unit is running, when the operating head is high and the unit is at a specific output, the turbine runner will produce abnormal vibrations, which will cause the vibration of the turbine top cover to increase, and then cause the unit swing to increase, greatly affecting the safe and stable operation of the unit.

[0003] Currently, abnormal vibration of the unit is usually eliminated by adjusting the unit output. This method requires the on-duty personnel to pay attention to the vibration of the top cover at all times, and the on-duty personnel are also required to manually adjust the output. The entire adjustment process relies on manual operation, resulting in reduced unit reliability. Moreover, under higher water heads, adjusting the output will not reduce the abnormal vibration of the top cover, which will cause the unit to shut down unexpectedly. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide an automatic air replenishing device and a control method thereof for eliminating abnormal vibration of a top cover.

[0005] Based on the above-mentioned purpose, the first aspect of the present application provides an automatic air supply device for eliminating abnormal vibration of the top cover, which is applied to a turbine unit. The automatic air supply device includes an air intake pipeline and at least two air supply pipelines. Each of the air supply pipelines includes an air intake end and an air outlet end. One end of the air intake pipeline is used to connect to an external air source, and the other end of the air intake pipeline is connected to the air intake end of each of the air supply pipelines. The air outlet end of at least one of the air supply pipelines is arranged close to the top cover of the turbine unit, and the air outlet end of at least one of the air supply pipelines is arranged close to the tail water pipe inlet of the turbine unit.

[0006] Optionally, three air supply pipelines are provided, wherein the air outlet ends of two of the air supply pipelines are arranged close to the top cover of the turbine unit, and the two air outlet ends are arranged at intervals.

[0007] Optionally, each of the air supply pipelines is provided with a solenoid valve and a throttle plate, the solenoid valve is configured to control the conduction or closure of the corresponding air supply pipeline based on the opening or closing of the solenoid valve, and the throttle plate is configured to adjust the flow of gas in the air supply pipeline.

[0008] Optionally, a pressure sensor is installed on each of the air supply pipelines, and the pressure sensor is arranged close to the air outlet end.

[0009] A second aspect of the present application provides a control method for the automatic air replenishing device for eliminating abnormal vibration of a top cover as described in any one of the first aspects above, comprising:

[0010] Acquire multiple vibration values ​​of the top cover and the duration of the vibration values ​​in real time;

[0011] In response to the vibration value and the duration meeting the preset air supply condition, obtaining the current operating condition of the turbine unit;

[0012] Based on the operating conditions, at least one air supply pipeline is controlled to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit.

[0013] Optionally, the operating conditions include pumping conditions and power generation conditions;

[0014] Based on the operating condition, controlling at least one air supply pipeline to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit includes:

[0015] In response to the operating condition being a power generation condition, the first air supply pipeline is controlled to supply air to the top cover, wherein the first air supply pipeline is an air supply pipeline provided with an air outlet end close to the top cover of the turbine unit;

[0016] In response to the operating condition being a pumping condition, the second air supply pipeline is controlled to supply air to the tailwater pipe inlet, wherein the second air supply pipeline is an air supply pipeline arranged with its air outlet end close to the tailwater pipe inlet of the turbine unit.

[0017] Optionally, it also includes:

[0018] In response to at least one of the vibration values ​​being greater than or equal to a preset vibration threshold and a duration of the vibration value being greater than or equal to a preset time, it is determined that the vibration value and the duration meet the preset gas replenishment condition.

[0019] Optionally, the preset gas replenishment condition includes a first gas replenishment condition and a second gas replenishment condition;

[0020] The method further comprises:

[0021] In response to at least one of the vibration values ​​being greater than or equal to a first preset vibration threshold and less than a second preset vibration threshold, and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the first gas replenishment condition;

[0022] In response to at least one of the vibration values ​​being greater than or equal to a second preset vibration threshold and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the second gas replenishment condition;

[0023] Wherein, the second preset vibration threshold is greater than the first preset vibration threshold.

[0024] Optionally, based on the operating condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet includes:

[0025] In response to the vibration value and the duration meeting the first air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a first flow rate;

[0026] In response to the vibration value and the duration meeting the second air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a second flow rate;

[0027] Wherein, the second flow rate is greater than the first flow rate.

[0028] Optionally, based on the operating condition, controlling at least one air supply pipeline to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit includes:

[0029] Controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a preset flow rate;

[0030] After a preset interval, multiple vibration values ​​of the top cover and the duration of the vibration values ​​are obtained in real time;

[0031] In response to the vibration value and the duration meeting a preset air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a third flow rate;

[0032] Wherein, the third flow rate is greater than the preset flow rate.

[0033] From the above description, it can be seen that the automatic air supply device and control method thereof for eliminating abnormal vibration of the top cover provided by the present application, the automatic air supply device includes an air inlet pipeline, at least two air supply pipelines, each air supply pipeline includes an air inlet end and an air outlet end, one end of the air inlet pipeline is used to connect to an external air source, and the other end of the air inlet pipeline is connected to the air inlet end of each air supply pipeline, the air outlet end of at least one air supply pipeline is arranged close to the top cover of the turbine unit, and the air outlet end of at least one air supply pipeline is arranged close to the tailwater pipe inlet of the turbine unit, so that the gas flowing out of the air supply pipeline can provide airflow for the top cover and the vicinity of the impeller, and can also provide airflow for the position where the tailwater pipe inlet is connected to the impeller chamber. The flow of airflow eliminates the problem that the rotation frequency of the impeller is close to the water flow frequency in the unit, thereby eliminating the resonance phenomenon. In this way, the impeller frequency will not be abnormal due to resonance, thereby ensuring that the top cover will not vibrate abnormally. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic diagram of an automatic air replenishing device according to an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the automatic air replenishing device of an embodiment of the present application when in use;

[0037] Figure 3 A flow chart of a control method of an automatic air replenishing device for eliminating abnormal vibration of a top cover according to an embodiment of the present application;

[0038] Figure 4 A schematic diagram of an electronic device according to an embodiment of the present application.

[0039] In the figure, 1. automatic air supply device; 11. air inlet pipeline; 111. ball valve; 112. air inlet pressure sensor; 12. air supply pipeline; 121. air outlet; 123. throttle; 124. solenoid valve; 125. air inlet; 126. pressure sensor; 127. pressure gauge; 2. turbine unit; 21. top cover; 22. tailwater pipe; 221. tailwater pipe inlet; 222. tailwater pipe outlet. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] Pumped storage is the use of electricity during the low load period to pump water to the upper reservoir, and then release the water stored in the upper reservoir to the lower reservoir for power generation during the peak load period, also known as energy storage power generation. It can convert the excess electricity during the low load period of the power grid into high-value electricity during the high load period of the power grid, suitable for frequency and phase modulation, can be used to stabilize the frequency and voltage of the power system, and is suitable for emergency standby, and can also improve the efficiency of thermal power plants and nuclear power plants in the power system.

[0043] The stable operation of pumped-storage power stations is crucial to the impact on electricity. At present, conventional pumped-storage power stations generally have an upper reservoir, a turbine unit and a lower reservoir. The upper reservoir is at a higher altitude than the turbine unit, and the two are connected by pipelines. The water in the upper reservoir flows into the turbine unit through the pipeline, and then flows out to the lower reservoir through the tailwater pipe under the turbine unit. In this process, the gravitational potential energy of the water is converted into kinetic energy, and then electricity is generated. This is the power generation condition. On the contrary, when the water in the lower reservoir passes through the tailwater pipe and the turbine unit in turn and enters the upper reservoir, this is the pumping condition.

[0044] With the long-term operation of the pumped-storage power station, it was found that when the turbine unit is running, when the operating head is high and the unit is at a specific output, the turbine runner will produce abnormal vibrations, which will cause the vibration of the turbine top cover to increase, and then cause the unit swing to increase, greatly affecting the safe and stable operation of the unit.

[0045] Currently, abnormal vibration of the unit is usually eliminated by adjusting the unit output. This method requires the on-duty personnel to pay attention to the vibration of the top cover at all times, and the on-duty personnel are also required to manually adjust the output. The entire adjustment process relies on manual operation, resulting in reduced unit reliability. Moreover, under higher water heads, adjusting the output will not reduce the abnormal vibration of the top cover, which will cause the unit to shut down unexpectedly.

[0046] The inventors discovered that the reason why the turbine impeller vibrates abnormally and the vibration of the top cover increases is that under certain specific circumstances, the rotation frequency of the impeller is close to the frequency of the water flow in the unit, resulting in a resonance phenomenon. The resonance phenomenon causes the rotation frequency of the impeller to increase, which in turn causes the impeller to vibrate abnormally and the top cover to vibrate abnormally.

[0047] Based on this, see Figure 1 and Figure 2The present application provides an automatic air supply device 1 for eliminating abnormal vibration of a top cover 21, which is applied to a turbine unit 2. The automatic air supply device 1 includes an air intake pipeline 11 and at least two air supply pipelines 12. Each of the air supply pipelines 12 includes an air intake end 125 and an air outlet end 121. One end of the air intake pipeline 11 is used to be connected to an external air source, and the other end of the air intake pipeline 11 is connected to the air intake end 125 of each of the air supply pipelines 12. The air outlet end 121 of at least one of the air supply pipelines 12 is arranged near the top cover 21 of the turbine unit 2, and the air outlet end 121 of at least one of the air supply pipelines 12 is arranged near the inlet of the tail water pipe 22 of the turbine unit 2.

[0048] Specifically, the turbine unit 2 includes at least a runner chamber and a tailwater pipe 22, the runner chamber includes a runner located in the runner chamber and a top cover 21 located on the top of the runner chamber, the tailwater pipe 22 includes a tailwater pipe 22 inlet and a tailwater pipe 22 outlet, and the runner chamber outlet is connected to the tailwater pipe 22 inlet.

[0049] The automatic air replenishment device 1 includes an air intake pipeline 11, one end of which is used to be connected to an external air source, and the other end of the air intake pipeline 11 is connected to the air intake end 125 of each of the air replenishment pipelines 12, so that the gas from the external source can flow to the air intake end 125 of each of the air replenishment pipelines 12 through the air intake pipeline 11.

[0050] The automatic air supply device 1 also includes at least two air supply pipelines 12, each of which includes an air inlet end 125 and an air outlet end 121. The air outlet end 121 of at least one of the air supply pipelines 12 is arranged near the top cover 21 of the turbine unit 2 (it can also be understood that the air end is arranged near the bladeless area of ​​the runner), and the air outlet end 121 of at least one of the air supply pipelines 12 is arranged near the inlet of the tailwater pipe 22 of the turbine unit 2 (it can also be understood that the air end is arranged near the bottom of the runner chamber). After the gas from the external source flows to the air inlet end 125 of each of the air supply pipelines 12 through the air inlet pipeline 11, it continues to flow along the air supply pipeline 12 to the air outlet end 121 of the air supply pipeline 12.

[0051] In this way, the gas flowing out of the air supply pipeline 12 provided at the air outlet end 121 near the top cover 21 of the turbine unit 2 is supplemented near the top cover 21, thereby providing airflow near the top cover 21 and the runner. Similarly, the gas flowing out of the air supply pipeline 12 provided at the air outlet end 121 near the inlet of the tailwater pipe 22 of the turbine unit 2 is supplemented near the inlet of the tailwater pipe 22, thereby providing airflow for the position where the inlet of the tailwater pipe 22 is connected to the runner chamber. The flow of airflow eliminates the problem that the rotation frequency of the runner is close to the frequency of the water flow in the unit, thereby eliminating the resonance phenomenon. In this way, the runner frequency will not be abnormal due to resonance, thereby ensuring that the top cover 21 will not have abnormal vibration.

[0052] In a specific implementation, only one air outlet end 121 of the air supply pipeline 12 may be arranged close to the top cover 21 of the turbine unit 2, or two or more air outlet ends 121 of the air supply pipeline 12 may be arranged close to the top cover 21 of the turbine unit 2. Similarly, only one air outlet end 121 of the air supply pipeline 12 may be arranged close to the inlet of the tailwater pipe 22 of the turbine unit 2, or two or more air outlet ends 121 of the air supply pipeline 12 may be arranged close to the inlet of the tailwater pipe 22 of the turbine unit 2.

[0053] See Figure 2 As shown, Figure 2 Among the three air supply pipelines 12, the outlet ends 121 of the two air supply pipelines 12 (i.e. Figure 2 The air supply pipeline 12 drawn by the dotted line and Figure 2 The air supply pipeline 12 (shown by the thicker black solid line) is used to supply air near the top cover. The air supply pipeline 12 ( Figure 2 The air supply pipeline 12) drawn by the thinner black solid line is used to supply air near the inlet of the tailwater pipe.

[0054] Furthermore, when replenishing air, air can be replenished only near the top cover 21 through the air replenishment pipeline 12, or only near the inlet of the tailwater pipe 22 through the air replenishment pipeline 12, or air can be replenished near the top cover 21 and near the inlet of the tailwater pipe 22 at the same time through the air replenishment pipeline 12.

[0055] In the present application, a plurality of air supply pipelines 12 are provided, and the air outlet end 121 of at least one of the air supply pipelines 12 is provided close to the top cover 21 of the turbine unit 2, and the air outlet end 121 of at least one of the air supply pipelines 12 is provided close to the inlet of the tailwater pipe 22 of the turbine unit 2. In this way, the gas flowing out of the air supply pipeline 12 can provide airflow for the top cover 21 and the vicinity of the runner, and can also provide airflow for the position where the inlet of the tailwater pipe 22 is connected to the runner chamber. The flow of airflow eliminates the problem that the rotation frequency of the runner is close to the water flow frequency in the unit, thereby eliminating the resonance phenomenon. In this way, the runner frequency will not be abnormal due to resonance, thereby ensuring that the top cover 21 will not have abnormal vibration.

[0056] In some embodiments, three air supply pipelines 12 are provided, wherein the air outlet ends 121 of two of the air supply pipelines 12 are both arranged close to the top cover 21 of the turbine unit 2, and the two air outlet ends 121 are arranged at intervals.

[0057] Specifically, of the two air outlet ends 121, one of the air outlet ends 121 can be set in the X direction of the top cover 21, and the other air outlet end 121 can be set in the Y direction of the top cover 21. In this way, the air outlet ends 121 of the two air supply pipelines 12 can respectively supply air in the X direction and Y direction of the top cover 21 to eliminate abnormal vibration of the top cover 21 in the X direction and Y direction.

[0058] In some embodiments, each of the air supply pipelines 12 is provided with a solenoid valve 124 and a throttle plate 123, and the solenoid valve 124 is configured to control the conduction or closure of the corresponding air supply pipeline 12 based on the opening or closing of the solenoid valve 124, and the throttle plate 123 is configured to adjust the flow rate of the gas in the air supply pipeline 12.

[0059] Specifically, the automatic air replenishing device 1 further includes a controller, and the controller is connected to each of the solenoid valves 124 and each of the throttle plates 123 .

[0060] The controller can control the solenoid valve 124 to open to control the conduction of the corresponding air supply pipeline 12, so that the air flow can be supplied to the vicinity of the top cover 21 or the inlet of the tailwater pipe 22 through the air supply pipeline 12. The controller can also control the solenoid valve 124 to close to control the closure of the corresponding air supply pipeline 12, so that the air flow cannot be supplied to the vicinity of the top cover 21 or the inlet of the tailwater pipe 22 through the air supply pipeline 12.

[0061] The controller can adjust the flow rate of the gas in the air supply pipeline 12 by controlling the throttle 123. The throttle 123 is a device that controls the flow rate and pressure by changing the actual area of ​​the air supply pipeline 12. In the air supply pipeline 12, the throttle 123 is usually installed on the throttle orifice plate of the pipeline. By adjusting the opening of the throttle 123, the flow rate and pressure of the fluid can be controlled. The shape and size of the throttle 123 are determined according to the specific application scenario and fluid characteristics, and are usually made of metal, plastic or other materials.

[0062] In the present application, a solenoid valve 124 and a throttle plate 123 are provided on each of the air supply pipelines 12 to effectively adjust the conduction or closure of the air supply pipeline 12 and the flow rate of the gas in the air supply pipeline 12, so as to automatically control the entire automatic air supply device 1.

[0063] In some embodiments, a pressure sensor 126 is installed on each of the air supply pipelines 12 , and the pressure sensor 126 is disposed close to the air outlet end 121 .

[0064] Specifically, each of the air supply pipelines 12 is installed with at least one pressure sensor 126 and a pressure gauge 127 connected to the pressure sensor 126 . The pressure sensor 126 monitors the gas pressure in the air supply pipeline 12 , and the pressure gauge 127 displays the pressure value monitored by the pressure sensor 126 .

[0065] The pressure sensor 126 is disposed close to the gas outlet 121 , so that the pressure sensor 126 can monitor the gas pressure in the gas outlet 121 in real time to monitor whether there is airflow passing through the gas supply pipeline.

[0066] See also Figure 3 The present application also provides a control method of an automatic air replenishing device 1 for eliminating abnormal vibration of a top cover 21, comprising:

[0067] Step S100, obtaining multiple vibration values ​​and durations of the vibration values ​​of the top cover 21 in real time;

[0068] Step S200, in response to the vibration value and the duration meeting the preset air supply condition, obtaining the current operating condition of the turbine unit 2;

[0069] Step S300: Based on the operating conditions, control at least one air supply pipeline 12 to supply air to the top cover 21 and / or the inlet of the tailwater pipe 22 of the turbine unit 2.

[0070] Specifically, the multiple vibration values ​​of the top cover 21 may include a horizontal vibration value in the X direction of the top cover 21, a horizontal vibration value in the Y direction of the top cover 21, a vertical vibration value in the X direction of the top cover 21, and a vertical vibration value in the Y direction of the top cover 21. These vibration values ​​and the duration of the vibration values ​​can be monitored in real time by sensors arranged at specific positions. The X direction and the Y direction may be two mutually perpendicular directions on the top cover.

[0071] After the vibration value and the vibration time are monitored, the vibration value and the vibration time are judged. When the vibration value and the duration meet the preset air supply condition, the current operating condition of the turbine unit 2 is obtained, and the operating condition includes a pumping condition and a power generation condition.

[0072] The preset air supply condition is a preset condition under which air can be supplied to the turbine unit 2 .

[0073] After determining the operating conditions, based on the operating conditions, at least one air supply pipeline 12 is controlled to supply air to the top cover 21 and / or the inlet of the draft tube 22 of the turbine unit 2. Since the water flow directions are different under different operating conditions, different air supply pipelines 12 can be controlled based on different operating conditions to supply air to the inlet of the top cover 21 and / or the draft tube 22 to eliminate abnormal vibration of the top cover 21.

[0074] In the present application, when the monitored vibration value and duration meet the preset air supply conditions, different air supply pipelines 12 are controlled to supply air to the top cover 21 and / or the tail water pipe 22 inlet based on the different operating conditions of the turbine unit 2, so as to effectively eliminate the abnormal vibration of the top cover 21.

[0075] In some embodiments, the step S300 controls at least one air supply pipeline 12 to supply air to the top cover 21 and / or the tailwater pipe 22 inlet of the turbine unit 2 based on the operating condition, including:

[0076] Step S10, in response to the operating condition being a power generation condition, controlling the first air supply pipeline 12 to supply air to the top cover 21, wherein the first air supply pipeline 12 is an air supply pipeline 12 provided with an air outlet end 121 close to the top cover 21 of the turbine unit 2;

[0077] Step S320, in response to the operating condition being a pumping condition, the second air supply pipeline 12 is controlled to supply air to the inlet of the tailwater pipe 22, wherein the second air supply pipeline 12 is an air supply pipeline 12 whose air outlet end 121 is arranged close to the inlet of the tailwater pipe 22 of the turbine unit 2.

[0078] Specifically, when the operating condition is a power generation condition, the first air supply pipeline 12 is controlled to supply air to the top cover 21 so as to supply air near the top cover 21. When the operating condition is a pumping condition, the second air supply pipeline 12 is controlled to supply air to the inlet of the tailwater pipe 22. This is because, according to experiments, it is verified that in the power generation condition, the abnormal vibration of the top cover 21 can be effectively eliminated by supplying air near the top cover 21, and in the pumping condition, the abnormal vibration of the top cover 21 can be effectively eliminated by supplying air near the inlet of the tailwater pipe 22.

[0079] It has been verified through experiments that if air is replenished near the inlet of the tailwater pipe 22 under power generation conditions, the abnormal vibration of the top cover 21 cannot be effectively eliminated, and if air is replenished near the top cover 21 under pumping conditions, the abnormal vibration of the top cover 21 cannot be effectively eliminated.

[0080] In the present application, since the water flow direction is different in different operating conditions, different air supply pipelines 12 can be controlled to supply air to the inlet of the top cover 21 and / or the tailwater pipe 22 based on different operating conditions to effectively eliminate abnormal vibration of the top cover 21.

[0081] In some embodiments, the method further includes: in response to at least one of the vibration values ​​being greater than or equal to a preset vibration threshold and a duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the preset gas replenishment condition.

[0082] Specifically, the preset vibration value is a preset minimum vibration value at which vibration abnormality occurs. Exemplarily, the preset vibration value may be 3 mm / s or 4 mm / s.

[0083] The preset vibration time is the preset minimum time for abnormal vibration to occur and for the need for gas supplementation intervention. Exemplarily, the preset vibration time may be 2s, 3s, 4s, etc.

[0084] When at least one of the vibration values ​​is greater than or equal to a preset vibration threshold and the duration of the vibration value is greater than or equal to a preset time, it indicates that the top cover 21 has abnormal vibration and the duration of the abnormal vibration is long. At this time, it is determined that the vibration value and the duration meet the preset air supply condition. Based on the operating condition, at least one air supply pipeline 12 can be controlled to supply air to the top cover 21 and / or the tail water pipe 22 inlet of the turbine unit 2 to eliminate the abnormal vibration of the top cover 21.

[0085] In some embodiments, the preset gas replenishment condition includes a first gas replenishment condition and a second gas replenishment condition;

[0086] The method further comprises:

[0087] In response to at least one of the vibration values ​​being greater than or equal to a first preset vibration threshold and less than a second preset vibration threshold, and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the first gas replenishment condition;

[0088] In response to at least one of the vibration values ​​being greater than or equal to a second preset vibration threshold and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the second gas replenishment condition;

[0089] Wherein, the second preset vibration threshold is greater than the first preset vibration threshold.

[0090] Specifically, the first preset vibration threshold is a preset vibration threshold when a slight vibration abnormality occurs, the second preset vibration threshold is a preset vibration threshold when a serious vibration abnormality occurs, and the second preset vibration threshold is greater than the first preset vibration threshold.

[0091] Exemplarily, the first preset vibration threshold may be 3 mm / s or 4 mm / s, etc., and the second preset vibration threshold may be 6 mm / s or 7 mm / s, etc.

[0092] Different vibration values ​​represent different severity of abnormal vibration of the top cover 21. The larger the vibration value, the more serious the abnormal vibration of the top cover 21. Therefore, the abnormal vibration of the top cover 21 needs to be determined based on different vibration values.

[0093] When at least one of the vibration values ​​is greater than or equal to the first preset vibration threshold and less than the second preset vibration threshold, and the duration of the vibration value is greater than or equal to the preset time, it is determined that the vibration value and the duration meet the first gas replenishment condition; when at least one of the vibration values ​​is greater than or equal to the second preset vibration threshold and the duration of the vibration value is greater than or equal to the preset time, it is determined that the vibration value and the duration meet the second gas replenishment condition.

[0094] The first air replenishment condition is a condition that air replenishment is required when the top cover 21 has a slight abnormal vibration, and the second air replenishment condition is a condition that air replenishment is required when the top cover 21 has a serious abnormal vibration.

[0095] In the present application, based on different situations of the vibration value, different first air replenishment conditions and second air replenishment conditions that the vibration value meets can be determined, and then the top cover 21 and / or the tail water pipe 22 inlet can be replenished with air based on the different first air replenishment conditions and the second air replenishment conditions, so as to save gas usage while effectively eliminating the abnormal vibration of the top cover 21.

[0096] In some embodiments, based on the operating conditions, controlling at least one air supply pipeline 12 to supply air to the inlet of the top cover 21 and / or the tailwater pipe 22 includes:

[0097] In response to the vibration value and the duration meeting the first air supply condition, controlling at least one air supply pipeline 12 to supply air at a first flow rate to the inlet of the top cover 21 and / or the tailwater pipe 22;

[0098] In response to the vibration value and the duration meeting the second air supply condition, controlling at least one air supply pipeline 12 to supply air to the inlet of the top cover 21 and / or the tailwater pipe 22 at a second flow rate;

[0099] Wherein, the second flow rate is greater than the first flow rate.

[0100] Specifically, since different vibration values ​​represent different severity of abnormal vibration of the top cover 21. The larger the vibration value, the more serious the abnormal vibration of the top cover 21. Therefore, when the vibration value and the duration meet the second air replenishment condition, it means that the abnormal vibration of the top cover 21 is very serious. At this time, it is necessary to replenish air to the top cover 21 and / or the tail water pipe 22 with a larger gas flow rate to effectively eliminate the problem that the rotation frequency of the impeller and the water flow frequency in the unit are similar, thereby eliminating the resonance phenomenon. In this way, the impeller will not cause abnormal frequency of the impeller due to resonance, thereby ensuring that the top cover 21 will not have abnormal vibration. At this time, if a smaller gas flow rate is used for air replenishment, the smaller flow rate cannot significantly improve the abnormal vibration of the top cover 21.

[0101] When the vibration value and the duration meet the first air replenishment condition, it means that the abnormal vibration of the top cover 21 is relatively mild. At this time, it is necessary to replenish air to the top cover 21 and / or the tail water pipe 22 with a smaller gas flow rate to effectively eliminate the problem of the rotation frequency of the impeller and the water flow frequency in the unit being similar. At the same time, it can also reduce the gas usage and save costs.

[0102] In the present application, based on different situations of the vibration value, different first air replenishment conditions and second air replenishment conditions that the vibration value meets can be determined, and then the top cover 21 and / or the tail water pipe 22 inlet can be replenished with air based on the different first air replenishment conditions and the second air replenishment conditions, so as to save gas usage while effectively eliminating the abnormal vibration of the top cover 21.

[0103] In some embodiments, based on the operating conditions, controlling at least one air supply pipeline 12 to supply air to the top cover 21 and / or the tailwater pipe 22 inlet of the turbine unit 2 includes:

[0104] Controlling at least one air supply pipeline 12 to supply air to the top cover 21 and / or the tailwater pipe 22 at a preset flow rate;

[0105] After a preset interval, multiple vibration values ​​of the top cover 21 and the duration of the vibration values ​​are obtained in real time;

[0106] In response to the vibration value and the duration meeting the preset air supply condition, controlling at least one air supply pipeline 12 to supply air to the inlet of the top cover 21 and / or the tailwater pipe 22 at a third flow rate;

[0107] Wherein, the third flow rate is greater than the preset flow rate.

[0108] Specifically, in the process of controlling at least one air supply pipeline 12 to supply air to the top cover 21 and / or the tailwater pipe 22 inlet at a preset flow rate, multiple vibration values ​​of the top cover 21 and the duration of the vibration values ​​are obtained in real time after a preset interval time.

[0109] The preset interval time is the preset interval time for measuring the vibration value after the air is replenished. For example, the preset interval time may be 10 minutes or 15 minutes.

[0110] In the process of controlling at least one air supply pipeline 12 to supply air to the top cover 21 and / or the tailwater pipe 22 at a preset flow rate, it has been verified through experiments that the air supply effect is basically apparent after the preset interval time. Therefore, after the preset interval time, it is necessary to obtain multiple vibration values ​​and the duration of the vibration values ​​of the top cover 21 in real time, and judge whether the top cover 21 is still in an abnormal vibration state through the vibration values ​​and the duration of the vibration values, so as to further evaluate the current air supply effect.

[0111] After the preset interval of air replenishment, if the vibration value and the duration do not meet the preset air replenishment conditions, it means that after the preset interval of air replenishment, the top cover 21 has no abnormal vibration, which means that the air replenishment effect is good and the abnormal vibration of the top cover 21 is effectively eliminated. At this time, the solenoid valve 124 can be controlled to close to stop air replenishment, thereby avoiding gas waste. Alternatively, air replenishment can continue at the current preset flow rate to avoid abnormal vibration of the top cover 21 again.

[0112] After the preset interval time of air replenishment, if the vibration value and the duration meet the preset air replenishment conditions, it means that after the preset interval time of air replenishment, the top cover 21 still has abnormal vibration, which means that the air replenishment effect is not good at this time and the abnormal vibration of the top cover 21 cannot be effectively eliminated. At this time, it is necessary to increase the air replenishment flow rate to replenish the top cover 21 with a larger gas flow rate to effectively eliminate the abnormal vibration of the top cover 21.

[0113] The preset flow rate is a preset minimum threshold of the supplemental gas flow rate. The third flow rate is a preset larger threshold of the supplemental gas flow rate.

[0114] In the present application, during the process of gas replenishment, multiple vibration values ​​and durations of the top cover 21 are continuously acquired in real time, so as to judge whether the top cover 21 is still in abnormal vibration based on the vibration values ​​and durations of the vibration values, so as to further evaluate the effect of the current gas replenishment, and flexibly adjust the flow rate of the next gas replenishment based on the current gas replenishment effect, so as to effectively ensure the effect of gas replenishment and ensure that the abnormal vibration of the top cover 21 can be effectively eliminated by gas replenishment. In addition, when gas replenishment is initially performed, a smaller gas flow rate is used to replenish gas to avoid excessive waste of gas.

[0115] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0116] It should be noted that some embodiments of the present application are described above. In some cases, the actions or steps recorded in the above embodiments can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0117] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the control method of the automatic air replenishing device for eliminating abnormal vibration of the top cover as described in any of the above embodiments is implemented.

[0118] Figure 4 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0119] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0120] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0121] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0122] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0123] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0124] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0125] The electronic device of the above embodiment is used to implement the control method of the automatic air replenishing device for eliminating abnormal vibration of the top cover in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0126] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the control method of the automatic air replenishing device for eliminating abnormal vibration of the top cover as described in any of the above embodiments.

[0127] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0128] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the control method of the automatic air replenishing device for eliminating abnormal vibration of the top cover as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0129] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a computer program product, including computer program instructions. When the computer program instructions are run on a computer, the computer executes the control method of the automatic air replenishing device for eliminating abnormal vibration of the top cover as described in any of the above embodiments, which has the beneficial effects of the corresponding method embodiments and will not be repeated here.

[0130] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0131] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.

[0132] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0133] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation of the present disclosure. Other methods that meet relevant laws and regulations may also be applied to the implementation of the present disclosure.

[0134] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0135] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0136] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0137] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. An automatic air filling device for eliminating abnormal vibration of a top cover, characterized in that: Applied to a turbine unit, the automatic air supply device includes an air inlet pipeline and at least two air supply pipelines, each of the air supply pipelines includes an air inlet end and an air outlet end, one end of the air inlet pipeline is used to be connected to an external air source, the other end of the air inlet pipeline is connected to the air inlet end of each of the air supply pipelines, the air outlet end of at least one of the air supply pipelines is arranged near the top cover of the turbine unit, and the air outlet end of at least one of the air supply pipelines is arranged near the tail water pipe inlet of the turbine unit.

2. The automatic air replenishing device according to claim 1, characterized in that: There are three air supply pipelines, wherein the air outlet ends of two of the air supply pipelines are arranged close to the top cover of the turbine unit, and the two air outlet ends are arranged at intervals.

3. The automatic air replenishing device according to claim 1, characterized in that: Each of the air supply pipelines is provided with a solenoid valve and a throttle plate. The solenoid valve is configured to control the conduction or closure of the corresponding air supply pipeline based on the opening or closing of the solenoid valve, and the throttle plate is configured to adjust the flow of gas in the air supply pipeline.

4. The automatic air replenishing device according to claim 1, characterized in that: A pressure sensor is installed on each of the air supply pipelines, and the pressure sensor is arranged close to the air outlet end.

5. A control method for an automatic air-filling device for eliminating abnormal vibration of a top cover according to any one of claims 1 to 4, characterized in that: include: Acquire multiple vibration values ​​of the top cover and the duration of the vibration values ​​in real time; In response to the vibration value and the duration meeting the preset air supply condition, obtaining the current operating condition of the turbine unit; Based on the operating conditions, at least one air supply pipeline is controlled to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit.

6. The method according to claim 5, characterized in that The operating conditions include pumping conditions and power generation conditions; Based on the operating condition, controlling at least one air supply pipeline to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit includes: In response to the operating condition being a power generation condition, the first air supply pipeline is controlled to supply air to the top cover, wherein the first air supply pipeline is an air supply pipeline provided with an air outlet end close to the top cover of the turbine unit; In response to the operating condition being a pumping condition, the second air supply pipeline is controlled to supply air to the tailwater pipe inlet, wherein the second air supply pipeline is an air supply pipeline arranged with its air outlet end close to the tailwater pipe inlet of the turbine unit.

7. The method according to claim 5, characterized in that Also includes: In response to at least one of the vibration values ​​being greater than or equal to a preset vibration threshold and a duration of the vibration value being greater than or equal to a preset time, it is determined that the vibration value and the duration meet the preset gas replenishment condition.

8. The method according to claim 7, characterized in that The preset gas replenishment condition includes a first gas replenishment condition and a second gas replenishment condition; The method further comprises: In response to at least one of the vibration values ​​being greater than or equal to a first preset vibration threshold and less than a second preset vibration threshold, and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the first gas replenishment condition; In response to at least one of the vibration values ​​being greater than or equal to a second preset vibration threshold and the duration of the vibration value being greater than or equal to a preset time, determining that the vibration value and the duration meet the second gas replenishment condition; Wherein, the second preset vibration threshold is greater than the first preset vibration threshold.

9. The method according to claim 8, characterized in that Based on the operating condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet includes: In response to the vibration value and the duration meeting the first air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a first flow rate; In response to the vibration value and the duration meeting the second air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a second flow rate; Wherein, the second flow rate is greater than the first flow rate.

10. The method according to claim 5, characterized in that Based on the operating condition, controlling at least one air supply pipeline to supply air to a top cover and / or a tailwater pipe inlet of the turbine unit includes: Controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a preset flow rate; After a preset interval, multiple vibration values ​​of the top cover and the duration of the vibration values ​​are obtained in real time; In response to the vibration value and the duration meeting a preset air supply condition, controlling at least one air supply pipeline to supply air to the top cover and / or the tailwater pipe inlet at a third flow rate; Wherein, the third flow rate is greater than the preset flow rate.

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