A circulating water system debugging operation method and circulating water system

Abstract

The present invention provides a method for debugging and operating a circulating water system and a circulating water system thereof. The method for debugging and operating a circulating water system comprises the following steps: arranging a regulating component in a siphon well in a telescopic manner; increasing the height of the regulating component to reduce the siphon effect of the siphon well, or reducing the height of the regulating component to increase the siphon effect of the siphon well; a circulating water pump, a condenser, and a siphon well are sequentially connected and together constitute a circulating water system; when the tide level of seawater is the average tide level, the first height of the regulating component is used as the regulating zero point; when the tide level of seawater is greater than the average tide level, the height of the regulating component is reduced to reduce the outlet pressure of the circulating water pump; when the tide level of seawater is less than the average tide level, the height of the regulating component is increased to increase the outlet pressure of the circulating water pump. A technical effect of the present invention is that the tidal level change of seawater can be effectively utilized to put the circulating water pump in the best operating condition, thereby better reducing energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of seawater direct-flow cooling circulating water systems, and in particular relates to a circulating water system debugging and operation method and a circulating water system thereof. Background Art

[0002] The circulating water system of the coastal power plant is an open cycle, which mainly provides cooling water for the condenser to condense the exhaust steam from the low-pressure cylinder of the turbine, so as to maintain the vacuum in the condenser during operation and enable the steam-water circulation to continue. It is the final heat sink of the conventional island.

[0003] The design of the circulating water system takes into account factors such as unit heat load, pipeline characteristics, site flooring, and extreme tidal levels. However, theoretically calculated pipeline resistance characteristics deviate from actual conditions, causing the actual operation of the circulating water pump to deviate from optimal operating conditions. Furthermore, the high flow rate and large pipelines of the circulating water system make it difficult to adjust the operating conditions of the circulating water system. After the installation and commissioning of the circulating water system in traditional power plants, the operating conditions are already determined and cannot be adjusted in real time.

[0004] However, since the sea tide level changes every day, the actual operating conditions of the circulating water system also change accordingly. The design and operating conditions of the traditional power plant circulating water system are generally designed with reference to the extreme low tide level. It is unable to fully utilize the changes in the tide level to optimize the plant's power consumption rate, which is not conducive to energy conservation and emission reduction. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a method for debugging and operating a circulating water system and a new technical solution for the circulating water system.

[0006] According to a first aspect of the present application, a method for debugging and operating a circulating water system is provided, comprising the following steps:

[0007] Step S100, retractably disposing an adjusting component in a siphon well; increasing the height of the adjusting component to reduce the siphon effect of the siphon well, or reducing the height of the adjusting component to increase the siphon effect of the siphon well;

[0008] In step S200, a circulating water pump, a condenser, and a siphon well are sequentially connected to form a circulating water system. Seawater is circulated through the circulating water pump, the condenser, and the siphon well and discharged into the sea.

[0009] Step S300, when the tide level of the seawater is the average tide level, taking the first height of the regulating component as the regulating zero point;

[0010] Step S400, when the seawater tide level is greater than the average tide level, lowering the height of the regulating assembly to reduce the outlet pressure of the circulating water pump; when the seawater tide level is less than the average tide level, increasing the height of the regulating assembly to increase the outlet pressure of the circulating water pump.

[0011] Optionally, the tide level of the seawater is measured by a liquid level measuring unit.

[0012] Optionally, in step S400, when the tide level of seawater is greater than the average tide level, the outlet pressure of the circulating water pump increases. At this time, the height of the regulating component is lowered to reduce the outlet pressure of the circulating water pump; when the tide level of seawater is lower than the average tide level, the outlet pressure of the circulating water pump decreases. At this time, the height of the regulating component is increased to increase the outlet pressure of the circulating water pump.

[0013] Optionally, the circulating water pump is located below the lowest tide level.

[0014] Optionally, the second height of the adjustment component is used as the lowest point, and the height of the lowest point is less than the height of the adjustment zero point; the third height of the adjustment component is used as the highest point, and the height of the highest point is greater than the height of the adjustment zero point;

[0015] The height of the adjustment component is between the second height and the third height, and the second height is greater than the highest tide level, and the third height is not greater than the factory floor height.

[0016] Optionally, in step S300, when the tide level of the seawater is the average tide level, the first height of the regulating component is used as the regulating zero point, including:

[0017] When the tide level of seawater is the average tide level, the regulating component is adjusted from the lowest point to the highest point, and a change curve of the current, outlet pressure, and circulating water flow of the circulating water pump is drawn. The change curve is compared with the flow characteristic curve of the circulating water pump, and the height of the regulating component corresponding to the optimal operating point of the circulating water pump is determined as the first height and used as the adjustment zero point.

[0018] According to a second aspect of the present application, there is provided a circulating water system, comprising:

[0019] A liquid level measurement unit, the liquid level measurement unit is used to measure the seawater tide level in real time; wherein the seawater tide level includes the average tide level, the lowest tide level and the highest tide level;

[0020] a circulating water pump, the circulating water pump being arranged below the lowest tide level;

[0021] a first pipeline and a condenser, wherein one end of the first pipeline is connected to the circulating water pump, and the other end is connected to the input end of the condenser;

[0022] a second pipeline and a siphon well, wherein one end of the second pipeline is connected to the output end of the condenser, and the other end is connected to the siphon well;

[0023] a third pipeline, one end of which is connected to the siphon well and the other end of which extends below sea level;

[0024] an adjusting component, the adjusting component being telescopically disposed in the siphon well, and the siphon effect of the siphon well being changed by adjusting the height of the adjusting component, the adjusting component having a first height, and the first height serving as an adjustment zero point of the adjusting component;

[0025] When the tide level of the seawater is the average tide level, the regulating component is located at a first height; when the tide level of the seawater is lower than the average tide level, the height of the regulating component is increased; when the tide level of the seawater is higher than the average tide level, the height of the regulating component is lowered.

[0026] Optionally, the regulating assembly separates the siphon well into a first chamber and a second chamber;

[0027] The seawater is circulated through the circulating water pump, the first pipeline, the condenser, the second pipeline, the first chamber, the second chamber, and the third pipeline in sequence and discharged into the sea.

[0028] Optionally, the circulating water system further includes a pressure transmitter;

[0029] The pressure transmitter is arranged on the first pipeline and is used to measure the outlet pressure of the circulating water pump.

[0030] Optionally, the circulating water system further includes a flow measuring device;

[0031] The flow measuring device is arranged in the first pipeline and is used to measure the flow of the circulating water pump.

[0032] Optionally, the adjustment assembly includes a drive mechanism, a transmission mechanism, a base and a stopcock;

[0033] The base is arranged inside the siphon well, the bottom of the stoplog is arranged on the base, and the top is movably connected to the siphon well;

[0034] The top of the laminated beam is connected to the driving mechanism through a transmission mechanism, and the driving mechanism is used to drive the top of the laminated beam to move to a preset position.

[0035] A technical effect of the present invention is:

[0036] In an embodiment of the present application, the regulating assembly is retractably disposed in the siphon well, and the siphon effect of the siphon well can be reduced by increasing the height of the regulating assembly, or the siphon effect of the siphon well can be increased by lowering the height of the regulating assembly. For example, when the tide level of seawater is greater than the average tide level, the inlet static pressure of the circulating water pump increases, and the outlet pressure of the circulating water pump increases. At this time, lowering the height of the regulating assembly increases the siphon effect to reduce the backwater resistance, which is beneficial to reducing the outlet pressure of the circulating water pump to a reference value, thereby helping to reduce the energy efficiency of the circulating water pump. Similarly, when the tide level of seawater decreases, the inlet static pressure of the circulating water pump decreases, and the outlet pressure of the circulating water pump decreases. At this time, increasing the height of the regulating assembly reduces the siphon effect to increase the backwater resistance, which is beneficial to raising the outlet pressure of the circulating water pump to a reference value, thereby helping to ensure the stable operation of the circulating water pump.

[0037] Therefore, the height of the regulating component changes with the change of the seawater tide level, so that the circulating water system fully utilizes the pressure energy caused by the change of the seawater tide level, greatly saving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic flow chart of a method for debugging and operating a circulating water system according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic structural diagram of a circulating water system according to another embodiment of the present invention;

[0040] Figure 3 A top view of a siphon well of a circulating water system according to another embodiment of the present invention;

[0041] Figure 4 This is a cross-sectional view of a siphon well of a circulating water system according to another embodiment of the present invention.

[0042] In the figure: 1. Adjustment component; 2. Siphon well; 21. First chamber; 22. Second chamber; 3. Circulating water pump; 4. Condenser; 5. Pressure transmitter; 6. Liquid level measuring unit; 71. First pipeline; 72. Second pipeline; 73. Third pipeline; 8. Flow measuring device; H2, first height; H1, second height; H3, third height. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0044] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0048] See also Figure 1 According to the first aspect of the present application, a method for debugging and operating a circulating water system is provided, which can make full use of the pressure energy caused by changes in seawater tides to debug and operate the circulating water system, so that the circulating water pump 3 is in the best operating state, thereby effectively reducing the energy consumption of the circulating water pump 3, which is conducive to optimizing the plant power consumption rate and achieving the purpose of energy conservation and emission reduction.

[0049] Specifically, the commissioning and operation method of the circulating water system includes the following steps:

[0050] Step S100 , retractably disposing the regulating component 1 in the siphon well 2 ; increasing the height of the regulating component 1 to reduce the siphon effect of the siphon well 2 , or reducing the height of the regulating component 1 to increase the siphon effect of the siphon well 2 .

[0051] The function of the siphon well 2 is to lower the geometric water supply elevation of the open circulating water system and reduce the power of the circulating water pump 3.

[0052] It should be noted that the purpose of siphon well 2 is, to a certain extent, to "break" the siphon rather than to establish it. The continuous flow of circulating water creates a vacuum in the circulating water return line. If this vacuum is not promptly broken, it can become too high, affecting the pipelines before siphon well 2 and, in severe cases, even disrupting the water flow. The second height H1 of the regulating assembly 1 within siphon well 2 is designed to prevent the siphon effect from becoming too strong, potentially threatening the safe operation of condenser 4.

[0053] In step S200, the circulating water pump 3, the condenser 4, and the siphon well 2 are connected in sequence to form a circulating water system. The seawater is discharged into the sea through the circulating water pump 3, the condenser 4, and the siphon well 2 in sequence.

[0054] In step S300, when the seawater tidal level is at the average tidal level, the first height H2 of the regulating assembly 1 is set as the adjustment zero point. Setting the adjustment zero point allows for accurate adjustment of the height of the regulating assembly 1, facilitating rapid and precise adjustment of the regulating assembly 1 according to changes in the seawater tidal level. This is highly convenient and helps to better utilize the pressure energy of tidal changes, thereby significantly reducing energy consumption.

[0055] Step S400: When the seawater tidal level is greater than the average tidal level, the height of the regulating assembly 1 is lowered to reduce the outlet pressure of the circulating water pump 3; when the seawater tidal level is less than the average tidal level, the height of the regulating assembly 1 is increased to increase the outlet pressure of the circulating water pump 3. The average tidal level of the seawater corresponds to the regulating zero point of the regulating assembly 1.

[0056] Taking the average tide level of seawater as a reference point, when the tide level of seawater rises, when the height of the regulating component 1 is lowered, the siphon effect of the siphon well 2 can be effectively increased, thereby reducing the backwater resistance of the circulating water system, and then the outlet pressure of the circulating water pump 3 can be adjusted to reduce the outlet pressure of the circulating water pump 3 to a reference value, so as to ensure the optimal operating condition of the circulating water pump 3, better protect the circulating water pump 3, and help save energy.

[0057] When the seawater tide level drops, increasing the height of the regulating component 1 can effectively reduce the siphon effect of the siphon well 2, thereby increasing the return water resistance of the circulating water system, and then adjusting the outlet pressure of the circulating water pump 3 so that the outlet pressure of the circulating water pump 3 is increased to the reference value, thereby ensuring the optimal operating condition of the circulating water pump 3 and better protecting the circulating water pump 3.

[0058] In the embodiment of the present application, the regulating assembly 1 is telescopically disposed within the siphon well 2, and the siphon effect of the siphon well 2 can be reduced by increasing the height of the regulating assembly 1, or increased by lowering the height of the regulating assembly 1. For example, when the tide level of seawater is greater than the average tide level, the inlet static pressure of the circulating water pump 3 increases, and the outlet pressure of the circulating water pump 3 increases. At this time, lowering the height of the regulating assembly 1 increases the siphon effect to reduce the backwater resistance, which is beneficial to reducing the outlet pressure of the circulating water pump 3 to a reference value, thereby helping to reduce the energy efficiency of the circulating water pump 3. Similarly, when the tide level of seawater decreases, the inlet static pressure of the circulating water pump 3 decreases, and the outlet pressure of the circulating water pump 3 decreases. At this time, increasing the height of the regulating assembly 1 reduces the siphon effect to increase the backwater resistance, which is beneficial to raising the outlet pressure of the circulating water pump 3 to a reference value, thereby helping to stabilize the operation of the circulating water pump 3.

[0059] Therefore, the height of the regulating assembly 1 changes with the change of the seawater tide level, so that the circulating water system fully utilizes the pressure energy caused by the change of the seawater tide level, greatly saving energy efficiency.

[0060] Optionally, the tidal level of the seawater is measured by the liquid level measuring unit 6. The liquid level measuring unit 6 can accurately measure the tidal level of the seawater, thereby facilitating precise control of the height of the regulating assembly 1 according to the measurement result of the liquid level measuring unit 6.

[0061] The tidal level of seawater is measured by the liquid level measuring unit 6 as a feedforward control for the height adjustment of the regulating component 1 of the circulating water system. The height of the regulating component 1 is increased or decreased according to the change of the tidal level, thereby realizing rapid adjustment of the outlet pressure of the circulating water pump 3 to ensure that the circulating water pump is at the optimal operating point, which is beneficial to energy saving and also helps to ensure the stability of the circulating water system.

[0062] Optionally, in step S400, when the tide level of seawater is greater than the average tide level, the outlet pressure of the circulating water pump increases. At this time, the height of the regulating component is lowered to reduce the outlet pressure of the circulating water pump; when the tide level of seawater is lower than the average tide level, the outlet pressure of the circulating water pump decreases. At this time, the height of the regulating component is increased to increase the outlet pressure of the circulating water pump.

[0063] In the above embodiment, adjusting the outlet pressure of the circulating water pump 3 by adjusting the height of the component 1 is feedback control, which can increase the accuracy of the circulating water pump outlet pressure control. The combination of feedforward control and feedback control makes the adjustment method more diverse, stable and reliable.

[0064] Optionally, the circulating water pump 3 is located below the lowest tide level, which can prevent cavitation in the circulating water pump and cool the condenser 4 safely and stably.

[0065] Optionally, the second height H1 of the adjustment component 1 is used as the lowest point, and the height of the lowest point is less than the height of the adjustment zero point; the third height H3 of the adjustment component 1 is used as the highest point, and the height of the highest point is greater than the height of the adjustment zero point;

[0066] The height of the adjustment component 1 is between the second height H1 and the third height H3, and the second height H1 is greater than the highest tide level, and the third height H3 is not greater than the factory floor height.

[0067] In the above embodiment, the second height H1 is used as the lowest point, and the third height H3 is used as the highest point, which limits the height adjustment range of the adjustment component 1 and ensures that the adjustment process of the adjustment component 1 is safer and more effective.

[0068] In addition, when the height of the adjustment component 1 is the second height H1, the safety and stability of the operation of the circulating water system can be guaranteed, while the siphon effect of the siphon well 2 is maximized to better reduce the power consumption of the circulating water pump 3.

[0069] It should be noted that the lowest point of the regulating assembly 1 can ensure the stable pressure of the circulating water when it enters the condenser 4, and can ensure the formation of the siphon effect of the circulating water system under any working conditions.

[0070] The height of the highest point of the regulating assembly 1 can be determined by the current of the circulating water pump 3 and the highest operating liquid level of the siphon well 2. When the current of the circulating water pump 3 reaches the rated current or the liquid level of the siphon well 2 reaches the factory floor height, the highest point of the regulating assembly 1 is reached. This height should not be too high during the test.

[0071] When the height of the regulating component 1 is at the third height H3, the seawater in the siphon well 2 is effectively prevented from being higher than the factory floor height, thereby avoiding potential safety hazards.

[0072] Optionally, in step S300, when the tide level of the seawater is the average tide level, the first height H2 of the regulating component 1 is used as the regulating zero point, including:

[0073] When the tide level of seawater is the average tide level, the regulating component 1 is adjusted from the lowest point to the highest point, and a variation curve of the current, outlet pressure, and circulating water flow of the circulating water pump 3 is drawn. The variation curve is compared with the flow characteristic curve of the circulating water pump 3, and the height of the regulating component 1 corresponding to the optimal operating point of the circulating water pump 3 is determined to be the first height H2 and used as the adjustment zero point. At this time, the pressure value measured by the pressure transmitter 5 is the reference value.

[0074] In the above embodiment, when the tide level of the seawater is the average tide level, the adjustment component 1 draws a change curve during the adjustment process, and the change curve is compared with the flow characteristic curve of the circulating water pump 3, so that the optimal operating point of the circulating water pump 3 can be accurately determined, thereby ensuring the accuracy of the adjustment zero point.

[0075] It should be noted that changes in the seawater tidal level serve as feedforward control for adjusting the height of the regulating assembly 1 in the circulating water system. The height of the regulating assembly 1 is adjusted upward or downward according to the tidal level, thereby enabling rapid adjustment of the outlet pressure of the circulating water pump 3. Adjusting the outlet pressure of the circulating water pump 3 by adjusting the height of the regulating assembly 1 is a form of feedback control, which increases control accuracy and stability. This ensures that the circulating water pump operates at its optimal operating point, contributing to energy savings and ensuring the stability of the circulating water system.

[0076] In a specific embodiment, when the unit is under high load, the vacuum of the condenser 4 can be selected as the controlled target, and the vacuum of the unit can be maintained stable by adjusting the height of the component 1 to achieve the purpose of optimizing the stable operation of the unit.

[0077] For example, during normal operation of the circulating water system, the operating conditions of the circulating water pump 3 are optimized as follows:

[0078] First, the first height H2 is used as the adjustment zero point of the adjustment assembly 1 .

[0079] Secondly, the height of regulating assembly 1 is adjusted based on the comparison between the measured tidal level and the average tidal level. This adjustment is a feedforward control of the circulating water system. The disturbance is the tidal level change, and the adjustment is the height of regulating assembly 1. When the measured tidal level is lower than the average tidal level, the height of regulating assembly 1 is increased. When the measured tidal level is higher than the average tidal level, the height of regulating assembly 1 is decreased. The height adjustment of regulating assembly 1 does not exceed the third height H3 and does not fall below the second height H1.

[0080] Again, the outlet pressure of the circulating water pump 3 is used as the regulated variable, and the height of the regulating assembly 1 is used as the regulating variable. This regulation is feedback control. By increasing or decreasing the height of the regulating assembly 1, the outlet pressure of the circulating water pump 3 is maintained stable at the optimal working condition.

[0081] It should be noted that when the unit is under high load, the vacuum of condenser 4 can be selected as the regulated variable, and the height of regulating component 1 can be used as the regulated variable. Feedforward regulation based on tidal level changes is still effective. Vacuum stability is even more important to the unit and helps improve its safety.

[0082] In this embodiment, the operating method of the circulating water system during the commissioning period is as follows:

[0083] First, start the circulating water pump 3 and manually control the adjustment component 1 to the lowest level to fully utilize the siphon effect of the circulating water system, reduce the current of the circulating water pump 3, and reduce energy consumption during debugging.

[0084] If the outlet pressure of the circulating water pump 3 is too low, causing other users such as the open water system plate heat exchanger to be unable to draw water, the height of the regulating component 1 can be appropriately increased to meet the minimum water supply demand.

[0085] See also Figures 2 to 4 As shown, according to the second aspect of the present application, there is provided a circulating water system, comprising:

[0086] A liquid level measuring unit 6, which is used to measure the seawater tide level in real time; wherein the seawater tide level includes the average tide level, the lowest tide level and the highest tide level;

[0087] A circulating water pump 3, wherein the circulating water pump 3 is arranged below the lowest tide level;

[0088] A first pipeline 71 and a condenser 4, wherein one end of the first pipeline 71 is connected to the circulating water pump 3, and the other end is connected to the input end of the condenser 4;

[0089] A second pipeline 72 and a siphon well 2, wherein one end of the second pipeline 72 is connected to the output end of the condenser 4, and the other end is connected to the siphon well 2;

[0090] A third pipeline 73, one end of which is connected to the siphon well 2, and the other end of which extends below the sea level;

[0091] an adjusting assembly 1, the adjusting assembly 1 being telescopically disposed in the siphon well 2, and the siphon effect of the siphon well 2 being changed by adjusting the height of the adjusting assembly 1, the adjusting assembly 1 having a first height H2, and the first height H2 serving as an adjustment zero point of the adjusting assembly 1;

[0092] When the tide level of the seawater is the average tide level, the regulating component 1 is located at the first height H2; when the tide level of the seawater is lower than the average tide level, the height of the regulating component 1 is increased; when the tide level of the seawater is higher than the average tide level, the height of the regulating component 1 is lowered.

[0093] In the above embodiment, the circulating water system can adjust the siphon effect of the siphon well 2 according to the changes in the tidal level of seawater, and then adjust the efficiency of the circulating water pump 3, so that the circulating water pump 3 can always be at the optimal operating point, which not only can better protect the circulating water pump 3, but also helps to save energy.

[0094] Optionally, the regulating assembly 1 separates the siphon well 2 into a first chamber 21 and a second chamber 22;

[0095] The seawater is circulated and discharged into the sea through the circulating water pump 3, the first pipeline 71, the condenser 4, the second pipeline 72, the first chamber 21, the second chamber 22, and the third pipeline 73 in sequence.

[0096] Optionally, the circulating water system further includes a pressure transmitter 5;

[0097] The pressure transmitter 5 is provided in the first pipeline 71 and is used to measure the outlet pressure of the circulating water pump 3. This enables the pressure transmitter 5 to accurately measure the outlet pressure of the circulating water pump 3 and accurately determine the optimal operating condition of the circulating water pump 3 based on the measurement results.

[0098] It should be noted that when the circulating water pump 3 is operating optimally, the measured value of the pressure transmitter 5 is a baseline value. This baseline value is a constant. Tidal changes can cause disturbances in the measured value of the pressure transmitter 5. Adjusting the height of the adjustment assembly 1 can reduce these disturbances, facilitating the operation of the circulating water pump 3.

[0099] Optionally, the circulating water system further includes a flow measuring device 8;

[0100] The flow measuring device 8 is provided in the first pipeline 71 and is used to measure the flow of the circulating water pump 3 .

[0101] In the above embodiment, the flow measuring device 8 can accurately measure the flow of the circulating water pump 3 , and is also helpful to accurately confirm the optimal operating point of the circulating water pump 3 .

[0102] Optionally, the adjustment assembly 1 includes a driving mechanism, a transmission mechanism, a base and a stacked beam; wherein the base can be a fixed concrete structure to ensure the stability of the adjustment assembly 1.

[0103] The base is arranged inside the siphon well 2 , the bottom of the stacked beam is arranged on the base, and the top is movably connected to the siphon well 2 .

[0104] The top of the laminated beam is connected to the driving mechanism through a transmission mechanism, and the driving mechanism is used to drive the top of the laminated beam to move to a preset position.

[0105] It should be noted that the stoplog sheets and the base divide the siphon well 2 into a first chamber 21 and a second chamber 22 .

[0106] In the above embodiment, the height adjustment of the adjustment component 1 is very simple and convenient, and easy to operate.

[0107] In the embodiments of the present application, the circulating water system commissioning method and the circulating water system thereof can accurately locate the optimal operating point of the circulating water pump 3, thereby improving operating efficiency and preventing the circulating water pump 3 from deviating from its operating condition for a long time, thereby increasing the operating life of the equipment. Furthermore, the height of the regulating assembly 1 changes with the tidal level of the seawater, fully utilizing the pressure energy caused by the tidal level changes, ensuring that the circulating water pump 3 always operates at the optimal operating point, significantly saving energy efficiency.

[0108] In addition, by combining the change in the tidal level of seawater as feedforward control and the change in the height of the regulating component 1 as feedback control, the rapidity and stability of the control of the circulating water system are improved.

[0109] For example, during the commissioning of the circulating water system, there are fewer cooling users of the circulating water, and the height of the regulating component 1 can be lowered to the lowest value to fully utilize the siphon effect to meet the commissioning and cooling requirements of other systems during the commissioning period.

[0110] When the unit is under high load, maintaining the vacuum stability of the condenser 4 plays a huge role. At this time, the height of the regulating component 1 can be increased or decreased to facilitate the overall stable operation of the unit and greatly improve the economy.

[0111] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for debugging and operating a circulating water system, characterized in that: The steps include: Step S100, retractably disposing the adjusting component in the siphon well; increasing the height of the adjusting component to reduce the siphon effect of the siphon well, or reducing the height of the adjusting component to increase the siphon effect of the siphon well; Step S200, the circulating water pump, the condenser, and the siphon well are connected in sequence to form a circulating water system, and the seawater is circulated through the circulating water pump, the condenser, and the siphon well in sequence and discharged into the sea; Step S300, when the tide level of the seawater is the average tide level, taking the first height of the regulating component as the regulating zero point; The second height of the adjustment component is used as the lowest point, and the height of the lowest point is less than the height of the adjustment zero point; the third height of the adjustment component is used as the highest point, and the height of the highest point is greater than the height of the adjustment zero point; The height of the adjustment component is between the second height and the third height, and the second height is greater than the highest tidal level, and the third height is not greater than the factory floor height; In step S300, when the tide level of the seawater is the average tide level, the first height of the regulating component is used as the regulating zero point, including: When the tide level of the seawater is the average tide level, the regulating component is adjusted from the lowest point to the highest point, and a variation curve of the current, outlet pressure, and circulating water flow of the circulating water pump is plotted, and the variation curve is compared with the flow characteristic curve of the circulating water pump, and the height of the regulating component corresponding to the optimal operating point of the circulating water pump is determined as the first height and used as the regulation zero point; Step S400, when the tidal level of seawater is greater than the average tidal level, lowering the height of the regulating assembly to reduce the outlet pressure of the circulating water pump; when the tidal level of seawater is less than the average tidal level, increasing the height of the regulating assembly to increase the outlet pressure of the circulating water pump.

2. The debugging and operation method of the circulating water system according to claim 1, characterized in that: The tidal level of seawater is measured by a liquid level measuring unit.

3. A circulating water system, characterized in that: The debugging and operation method of the circulating water system according to any one of claims 1 to 2 comprises: A liquid level measuring unit, the liquid level measuring unit is used to measure the seawater tide level in real time; wherein the seawater tide level includes the average tide level, the lowest tide level and the highest tide level; A circulating water pump, wherein the circulating water pump is arranged below the lowest tide level; A first pipeline and a condenser, wherein one end of the first pipeline is connected to the circulating water pump, and the other end is connected to the input end of the condenser; a second pipeline and a siphon well, wherein one end of the second pipeline is connected to the output end of the condenser, and the other end is connected to the siphon well; a third pipeline, one end of which is connected to the siphon well, and the other end of which extends below the sea level; An adjusting component, wherein the adjusting component is telescopically disposed in the siphon well, and the siphon effect of the siphon well is changed by adjusting the height of the adjusting component, and the adjusting component has a first height, and the first height serves as an adjustment zero point of the adjusting component; When the tide level of seawater is the average tide level, the regulating component is located at a first height; when the tide level of seawater is lower than the average tide level, the height of the regulating component is increased; when the tide level of seawater is higher than the average tide level, the height of the regulating component is reduced.

4. The circulating water system according to claim 3, characterized in that: The regulating assembly separates the siphon well into a first chamber and a second chamber; The seawater is circulated and discharged into the sea through the circulating water pump, the first pipeline, the condenser, the second pipeline, the first chamber, the second chamber and the third pipeline in sequence.

5. The circulating water system according to claim 4, characterized in that: Also included is a pressure transmitter; The pressure transmitter is arranged on the first pipeline and is used to measure the outlet pressure of the circulating water pump.

6. The circulating water system according to claim 5, characterized in that: Also included is a flow measurement device; The flow measurement device is arranged in the first pipeline and is used to measure the flow of the circulating water pump.

7. The circulating water system according to claim 6, characterized in that: The adjustment assembly includes a driving mechanism, a transmission mechanism, a base and a stacked beam; The base is arranged inside the siphon well, the bottom of the stacked beam is arranged on the base, and the top is movably connected with the siphon well; The top of the laminated beam sheet is connected to the driving mechanism through a transmission mechanism, and the driving mechanism is used to drive the top of the laminated beam sheet to move to a preset position.

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