Rotating windproof curtain device for power plant air-cooling island, control method and electronic equipment

Abstract

The present invention relates to a rotary windproof curtain device, a control method, and an electronic device for an air-cooled island in a power station. The windproof curtain device is arranged above an air-cooled condenser unit to separate the flow field above the air-cooled condenser unit into left and right parts and to control the left and right flow fields. The cross-section of the air-cooled condenser unit is an isosceles triangle. The air-cooled condenser unit includes an exhaust branch pipe, the two sides of which are connected to the left and right return pipes respectively through finned tube bundles, and an axial flow fan is provided between the left and right return pipes. The structure of the windproof curtain device includes a vertical support frame, the bottom of the vertical support frame is arranged on the exhaust branch pipe, and a rotating shaft is provided on each left and right side of the top of the vertical support frame. A windproof curtain that can rotate with the rotating shaft is provided on each rotating shaft, and the two windproof curtains rotate in opposite directions. The present invention can achieve targeted optimization and adjustment of the air-cooled condenser unit under different environmental conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of direct air cooling of generator sets, and in particular to a rotary windproof curtain device, a control method and electronic equipment for an air-cooling island in a power station. Background Art

[0002] The cold-end system is an integral component of fossil fuel-based, Rankine-cycle thermal power generation units. To conserve water resources and meet power generation needs in water-scarce regions, air cooling systems are widely adopted. Direct air cooling systems are particularly popular due to their simple structure, low initial investment, and high heat exchange efficiency. A direct air cooling system consists of numerous air-cooled condenser units and exhaust and return water piping. Each air-cooled condenser unit primarily comprises a triangularly arranged finned tube bundle with an axial flow fan positioned beneath it. The exhaust steam is distributed to each finned tube bundle by the axial flow fan, which induces air convection to directly cool the exhaust steam within the finned tube bundle. The condensed water is then transported to the boiler feed water via the return water piping. This air-cooled condenser array is often referred to as an "air-cooled island."

[0003] The operation of the air-cooled island is significantly affected by environmental factors. In high-temperature summer conditions, the ambient temperature is high and the hot air flows between the air-cooled condenser units interfere with each other, affecting the heat transfer performance on the air side. Heat is difficult to be removed from the exhaust steam to the air, thus affecting the efficiency of the air-cooled island. In low-temperature winter conditions, the ambient temperature is low, which may cause the condensing return water temperature to be too low and freeze, and the exhaust steam pressure is often low and in the dangerous range, affecting the normal and efficient operation of the unit. Therefore, a highly integrated and integrated solution is needed to optimize and adjust the air-cooled condenser units in different environmental conditions, thereby improving the efficiency of the air-cooled island and expanding its operating boundaries. This is a current technical challenge. Summary of the Invention

[0004] In response to the deficiencies of the prior art, the present invention provides a rotating windproof curtain device, a control method, and electronic equipment for an air-cooled island in a power station, which enables targeted optimization and adjustment of the air-cooled condenser unit under different environmental conditions.

[0005] The technical solution adopted in the present invention is as follows:

[0006] The present invention provides a rotating windproof curtain device for an air-cooled island of a power station. The windproof curtain device is arranged above an air-cooled condenser unit to separate the flow field above the air-cooled condenser unit into left and right parts and to regulate the left and right flow fields.

[0007] The cross section of the air-cooled condenser unit is an isosceles triangle. The air-cooled condenser unit includes an exhaust branch pipe. Both sides of the exhaust branch pipe are connected to the left and right return pipes through finned tube bundles, and an axial flow fan is provided between the left and right return pipes.

[0008] The structure of the windproof curtain device includes a vertical support frame, the bottom of which is arranged on the exhaust branch pipe, and a rotating shaft is provided on each of the left and right sides of the top of the vertical support frame. Each rotating shaft is provided with a windproof curtain that can rotate with it. The two windproof curtains can perform the following movements:

[0009] When opened, the left windproof curtain rotates clockwise and the right windproof curtain rotates counterclockwise, both rotating from a horizontal state to a vertical state; when closed, the left windproof curtain rotates counterclockwise and the right windproof curtain rotates clockwise, both rotating from a vertical state to a horizontal state; wherein, the windproof curtain angle Θ=90° in the horizontal state and Θ=0° in the vertical state.

[0010] Further technical solutions are:

[0011] When the air-cooled condenser unit is operating in summer, the two windproof curtains are adjusted to a vertical state to separate the flow field above the air-cooled condenser unit and alleviate the interference of ambient wind; when the air-cooled condenser unit is operating in winter, the two windproof curtains are gradually adjusted to a horizontal state according to the current operating conditions to slow down the flow and heat dissipation capacity of the air-cooled condenser unit.

[0012] The two windproof curtains are arranged symmetrically on both sides, and the symmetry axis coincides with the symmetry axis of the isosceles triangle.

[0013] When the left and right windproof curtains are in a horizontal state, they can completely cover the vertical projection of the air-cooled condenser unit.

[0014] A seal is provided between the left and right windproof curtains.

[0015] The present invention also provides a control method for a rotary windproof curtain device of an air-cooled island in a power station, comprising the following steps:

[0016] S1, initialize winter mode counting parameter NumD = 0, transition mode initialization counting parameter NumG = 0, winter mode time counting parameter τ D =0, transition mode time counting parameter τ G =0, initialize the winter mode exhaust pressure reference value p c0 D =0, condensing return water temperature reference value T w0 D =0, initialize the transition mode exhaust pressure reference value p c0 G =0;

[0017] S2. Get the real-time ambient temperature T a , wind curtain angle Θ, compared with the ambient temperature T a With the preset summer mode temperature threshold T a1 Size, if T a≥T a1 , then enter the summer mode: adjust the left and right wind curtain angles Θ = 0°, then delay j / N, and re-enter step S2; where j represents the time interval, which is an integer greater than 0, and N is an integer greater than 0;

[0018] If T a <T a1 , compared with the ambient temperature T a The preset winter mode temperature threshold T a2 Size, if T a ≥T a2 , enter S3 transition mode, otherwise, enter S6 winter mode;

[0019] S3, after entering the transition mode, set NumD to 0, NumG to 1, τ G Add j / N; then, determine whether NumG is equal to 1. If NumG is equal to 1, adjust the left and right wind curtain angles Θ to increase the offset angle Θ. δ G , obtain the current exhaust steam pressure p of the unit c And assign it to p c0 G , then adjust the angle of the windproof curtain, and then delay j / N, re-enter step S2; if NumG is not equal to 1, then enter step S4;

[0020] S4. Determine the current τ G Check if the remainder of j is 0. If not, record the current exhaust pressure p. c , wind curtain angle Θ, and calculate the exhaust pressure margin Δp c =p c -p b , if Δp c ≤γp b , then enter the exhaust pressure warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ p A And adjust the wind curtain angle, then delay j / N and re-enter step S2; if Δp c >γp b , then keep the current wind curtain angle unchanged, delay j / N, and re-enter step S2; if the current τ G If the remainder of j is equal to 0, then go to step S5; where γ, p b They are exhaust pressure warning coefficient and blocking back pressure respectively;

[0021] S5, from the current τ G In the j time intervals before, the corresponding historical exhaust pressure value is taken per unit time, an array is constructed and assigned, and the array p is obtained. c G[j], calculate array p c G The average value p of [j] c,m G If p c,m G ≤αp c0 G , then adjust the left and right wind curtain angles Θ to increase the offset angle Θ δ G , and the p at this time c,m G Assign to p c0 G , then delay j / N and re-enter step S2;

[0022] If p c,m G >αp c0 G , then further judge: if p c,m G ≥βp c0 G , then adjust the left and right wind curtain angles Θ to reduce the offset angle Θ δ G , and the p at this time c,m G Assign to p c0 G , then delay j / N and re-enter step S2; if p c,m G <βp c0 G , then keep the current wind curtain angle unchanged and set the p c,m G Assign to p c0 G , delay j / N, and re-enter step S2; wherein α is the exhaust pressure drop variation coefficient, and β is the exhaust pressure rise variation coefficient;

[0023] S6. After entering winter mode, set NumG to 0, NumD to 1, τ D Add j / N; then, determine whether NumD is equal to 1. If NumD is equal to 1, adjust the left and right wind curtain angles Θ to increase the offset angle Θ. δ D , record the current exhaust steam pressure p c and condensation return water temperature T w And assign them to p respectively c0 D and T w0 D , then adjust the angle of the windproof curtain; then delay j / N and re-enter step S2; if NumD is not equal to 1, then enter step S7;

[0024] S7, judging the current τ D Check if the remainder of j is 0. If not, record the current exhaust steam pressure p of the unit. c 、Current condensation return water temperature T w , wind curtain angle Θ, and calculate the exhaust pressure margin Δp c =p c -p b , if Δp c ≤γp b , then enter the exhaust pressure warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ p A , then delay j / N and re-enter step S2; if Δp c >γp b , then further judge: If T w ≤T L , then enter the return water temperature warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ w A , then delay j / N and re-enter step S2, if T w >T L , then keep the current wind curtain angle unchanged, delay j / N, and re-enter step S2; if the current τ D If the remainder of j is equal to 0, then go to step S8; where T L is the return water temperature warning threshold;

[0025] S8, from the current τ D In the j time intervals before, the corresponding historical exhaust pressure value is taken per unit time, an array is constructed and assigned, and the array p is obtained. c D [j], take the corresponding historical condensation return water temperature value per unit time, construct an array and assign it, and get the array T w D [j], calculate array p c D The average value p of [j] c,m D , calculate the array T w D The average value T of [j] w,m D , and then make a judgment:

[0026] If p c,m D ≤αp c0 D or T w,m D ≤εT w0 D, then adjust the left and right wind curtain angles Θ to increase the offset angle Θ δ D , and the p at this time c,m D Assign to p c0 D 、T w,m D Assign to T w0 D , then delay j / N and re-enter step S2; if p c,m D >αp c0 D And T w,m D >εT w0 D , then further judge: if p c,m D ≥βp c0 D or T w,m D ≥ζT w0 D , then adjust the left and right wind curtain angles Θ to reduce the offset angle Θ δ D , and the p at this time c,m D Assign to p c0 D and T w,m D Assign to T w0 D , then delay j / N and re-enter step S2; if p c,m D <βp c0 D And T w,m D <ζT w0 D , then keep the current wind curtain angle unchanged and set the p c,m D Assign to p c0 D 、T w,m D Assign to T w0 D , delay j / N, and re-enter step S2; where ε is the coefficient of change of the condensing return water temperature drop; ζ is the coefficient of change of the condensing return water temperature rise.

[0027] α<1, β>1, ε<1, ζ>1, γ>1.

[0028] j is divisible by N.

[0029] The present invention also provides an electronic device, comprising a processor and a memory arranged to store computer executable instructions, wherein when the executable instructions are executed, the processor executes the control method of the rotary windproof curtain device of the air-cooling island of the power station.

[0030] The present invention also provides a storage medium storing one or more programs, which, when executed by an electronic device including multiple application programs, enables the electronic device to execute the control method of the power plant air-cooling island rotating windproof curtain device.

[0031] The beneficial effects of the present invention are as follows:

[0032] The present invention's rotating windscreen device for a power plant's air-cooled island is used to separate the flow field above the air-cooled condenser unit into two parts, mitigating the adverse effects of ambient wind and directing the hot air flow through the unit, stabilizing the left and right flow fields. Furthermore, by adjusting the symmetrical windscreen angles, the left and right flow fields can be regulated, thereby adjusting the flow and heat dissipation capacity of the air-cooled condenser unit to meet actual site requirements.

[0033] The present invention provides an integrated solution for controlling the performance of a power plant's air-cooled island by adjusting the angle of the electric wind curtain based on the ambient temperature, the outlet water temperature of the air-cooled condenser unit, and the exhaust pressure of the direct air-cooled unit, thereby achieving efficient and safe operation of the air-cooled island under different environmental conditions. Specifically, by adjusting the angle of the electric wind curtain, the curtain is placed vertically during high-temperature summer conditions to shield the ambient wind and guide the hot air flow of the air-cooled condenser unit, thereby enhancing the heat dissipation of the air-cooled condenser unit. During low-temperature winter conditions and winter-summer transition conditions, the angle of the wind curtain is adjusted based on real-time feedback from the exhaust pressure and condensate return water temperature, and the adjustment effect is evaluated. If the adjustment effect is not obvious, the offset angle adjustment is continued to be accumulated. If the adjustment effect meets the expected effect, no further adjustment is made. If the adjustment effect is too strong, the offset angle adjustment is accumulated to reduce. In addition, the present invention also provides an exhaust pressure warning mode and a condensate return water temperature warning mode for adjusting the wind curtain angle, monitoring the exhaust pressure and condensate return water temperature in real time, and immediately making a large-scale angle adjustment if they exceed a reasonable range to ensure safe and reliable operation of the air-cooled island.

[0034] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the windproof curtain device according to an embodiment of the present invention.

[0036] Figure 2 for Figure 1Enlarged view of part A in the middle.

[0037] Figure 3 Schematic diagram of the flow of the control method according to an embodiment of the present invention.

[0038] In the figure: 1. Rotating shaft; 2. Vertical support frame; 3. Wind curtain; 4. Axial flow fan; 5. Sealing plate; 6. Return pipe; 7. Exhaust branch pipe; 8. Finned tube bundle; 9. Gap. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0040] See also Figure 1 , a rotary windproof curtain device of a power plant air-cooling island in this embodiment is arranged above an air-cooled condenser unit; the structure of the air-cooled condenser unit includes an exhaust branch pipe 7, both sides of the exhaust branch pipe 7 are connected to the left and right return pipes 6 through finned tube bundles 8 respectively, an axial flow fan 4 is provided between the left and right return pipes 6, and a sealing plate 5 is provided between the axial flow fan 4 and the return pipe 6, wherein the finned tube bundles 8 on the left and right sides and the left and right return pipes 6 are symmetrically arranged with the exhaust branch pipe 7 as the center, so that the cross section of the air-cooled condenser unit is an isosceles triangle, and multiple groups of finned tube bundles 8 are arranged axially at intervals along the exhaust branch pipe 7; those skilled in the art can understand that the working principle of the air-cooled condenser unit is as follows: the hot steam in the exhaust branch pipe 7 is cooled under the action of the axial flow fan 4, and the formed condensed water flows into the return pipes 6 on the left and right sides from the finned tube bundles 8 on both sides;

[0041] The structure of the windproof curtain device includes a vertical support frame 2, the bottom of which is set on the exhaust branch pipe 7, and a rotating shaft 1 is set on the left and right sides of the top of the vertical support frame 2. Each rotating shaft 1 is provided with a windproof curtain 3 that can rotate with it. The two windproof curtains 3 can perform the following movements:

[0042] When opened, the windproof curtain on the left rotates clockwise, and the windproof curtain on the right rotates counterclockwise, both rotating from horizontal to vertical ( Figure 1 When closed, the left windproof curtain rotates counterclockwise, and the right windproof curtain rotates clockwise, both rotating from a vertical state to a horizontal state ( Figure 1 (shown by the solid line);

[0043] The angle between the windproof curtain and the vertical plane passing through the rotation axis 1 at a certain moment, namely the windproof curtain angle θ, is at least 0° when the windproof curtain is in a vertical state and at most 90° when the windproof curtain is in a horizontal state.

[0044] The rotating windscreen device of the power plant's air-cooled island in this embodiment is used to separate the flow field above the air-cooled condenser unit into two parts, stabilizing the flow fields on both sides and reducing interference from ambient wind. By adjusting the angle of the windscreen, the air-cooled island's operation can be optimized under different environmental conditions, ensuring efficient and stable operation of the air-cooled condenser units and ensuring safe and reliable operation of the air-cooled island. During summer operating conditions, when the ambient temperature is high and the ambient wind causes interference between the hot air flows between the air-cooled condenser units, thus affecting exhaust steam condensation, the two windscreens are adjusted to a vertical position, effectively separating the rows of air-cooled condenser units and alleviating the interference from ambient wind, thereby effectively improving the cooling efficiency of the air-cooled island. During winter operating conditions, when the ambient temperature is low, the exhaust steam in the air-cooled condenser is prone to excessive condensation and freezing, which can lead to damage to the condenser tubes and the unit's exhaust steam pressure often drops too low, entering a dangerous range. At this time, the two windscreens are gradually adjusted to a horizontal position based on the current operating conditions, slowing the flow and heat dissipation capacity of the air-cooled condenser units and effectively insulating and preventing the exhaust steam in the tubes from freezing.

[0045] As a preferred embodiment, the two windproof curtains 3 are arranged bilaterally symmetrically, and the symmetry axis coincides with the symmetry axis of the isosceles triangle.

[0046] As a preferred embodiment, the left and right windproof curtains 3 can completely cover the vertical projection of the air-cooled condenser unit when they are in a horizontal state ( Figure 1 the area between the dotted lines on the left and right sides of the center).

[0047] As a preferred embodiment, the size of the windproof curtain 3 along the axial direction of the exhaust branch pipe 7 is preferably consistent with the axial size of the exhaust branch pipe 7, and can be formed by axially splicing unit curtains to cover the air-conditioning condenser unit.

[0048] The material of the windproof curtain 3 should have both heat preservation and lightness, and the material strength should not be too low.

[0049] As a preferred embodiment, a seal is provided between the left and right windproof curtains 3. Figure 2 As shown, to further enhance the isolation effect of the left and right wind curtains 3 on the left and right flow fields above the air-cooled condenser unit, a partition or other component is installed in the gap 9 between the two rotating shafts 1 to prevent airflow from passing through. The lower portion of the partition extends into the vertical support frame 2 to prevent airflow from passing through the gap between the two sides of the vertical support frame 2.

[0050] Specifically, the height of the vertical support frame 2 is preferably such that no mechanical structures are blocked from each other and the aerodynamic field is smooth.

[0051] Specifically, the rotating shaft 1 can be driven to rotate by an electric drive device.

[0052] See also Figure 3The present embodiment provides a control method for a rotating wind curtain device for an air-cooled island in a power plant. By adjusting the angle of the wind curtain, the method optimizes the operation of the air-cooled island under different environmental conditions. The method has five operating modes: summer mode, transition mode, winter mode, exhaust pressure warning mode, and return water temperature warning mode. The method specifically includes the following steps:

[0053] S1, initialize winter mode counting parameter NumD = 0, transition mode initialization counting parameter NumG = 0, winter mode time counting parameter τ D =0, transition mode time counting parameter τ G =0, initialize the winter mode exhaust pressure reference value p c0 D =0, condensing return water temperature reference value T w0 D =0, initialize the transition mode exhaust pressure reference value p c0 G =0;

[0054] S2. (via on-site sensor) obtain real-time ambient temperature T a , wind curtain angle Θ, compared with the ambient temperature T a With the preset summer mode temperature threshold T a1 Size, if T a ≥T a1 , then enter the summer mode: adjust the left and right wind curtain angles Θ = 0°, then delay j / N, and re-enter step S2; where j represents the time interval, which is an integer greater than 0, and N is an integer greater than 0; if T a <T a1 , compared with the ambient temperature T a The preset winter mode temperature threshold T a2 Size, if T a ≥T a2 , enter S3 transition mode, otherwise, enter S6 winter mode;

[0055] S3, after entering the transition mode, set NumD to 0, NumG to 1, τ G Add j / N; then, determine whether NumG is equal to 1. If NumG is equal to 1, adjust the left and right wind curtain angles Θ to increase the offset angle Θ. δ G , obtain the current exhaust steam pressure p of the unit c And assign it to p c0 G , then adjust the angle of the windproof curtain, and then delay j / N, re-enter step S2; if NumG is not equal to 1, then enter step S4;

[0056] S4. Determine the current τ GCheck if the remainder of j is 0. If not, record the current exhaust pressure p. c , wind curtain angle Θ, and calculate the exhaust pressure margin Δp c =p c -p b , if Δp c ≤γp b , then enter the exhaust pressure warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ p A And adjust the wind curtain angle, then delay j / N and re-enter step S2; if Δp c >γp b , then keep the current wind curtain angle unchanged, delay j / N, and re-enter step S2; if the current τ G If the remainder of j is equal to 0, then go to step S5; where γ, p b They are exhaust pressure warning coefficient and blocking back pressure respectively;

[0057] S5, from the current τ G To the previous j time intervals, that is, including j unit time, take the corresponding historical exhaust pressure value for each unit time, construct an array and assign it, and get the array p c G [j], calculate the average exhaust pressure in the j time interval, that is, array p c G The average value p of [j] c,m G If p c,m G ≤αp c0 G , then adjust the left and right wind curtain angles Θ to increase the offset angle Θ δ G , and the p at this time c,m G Assign to p c0 G For the next round of the program, and then delay j / N and re-enter step S2;

[0058] If p c,m G >αp c0 G , then further judge: if p c,m G ≥βp c0 G , then adjust the left and right wind curtain angles Θ to reduce the offset angle Θ δ G , and the p at this time c,m G Assign to p c0G For the next round of the program, and then delay j / N and re-enter step S2; if p c,m G <βp c0 G , then keep the current wind curtain angle unchanged and set the p c,m G Assign to p c0 G For the next round of the program, delay j / N and re-enter step S2; where α is the exhaust pressure drop variation coefficient, and β is the exhaust pressure rise variation coefficient;

[0059] S6. After entering winter mode, set NumG to 0, NumD to 1, τ D Add j / N; then, determine whether NumD is equal to 1. If NumD is equal to 1, adjust the left and right wind curtain angles Θ to increase the offset angle Θ. δ D , record the current exhaust steam pressure p c and condensation return water temperature T w And assign them to p respectively c0 D and T w0 D , then adjust the angle of the windproof curtain; then delay j / N and re-enter step S2; if NumD is not equal to 1, then enter step S7;

[0060] S7, judging the current τ D Check if the remainder of j is 0. If not, record the current exhaust steam pressure p of the unit. c 、Current condensation return water temperature T w , wind curtain angle Θ, and calculate the exhaust pressure margin Δp c =p c -p b , if Δp c ≤γp b , then enter the exhaust pressure warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ p A , then delay j / N and re-enter step S2; if Δp c >γp b , then further judge: If T w ≤T L , then enter the return water temperature warning mode, adjust the left and right wind curtain angles Θ and increase the offset angle Θ w A , then delay j / N and re-enter step S2, if T w >T L, then keep the current wind curtain angle unchanged, delay j / N, and re-enter step S2; if the current τ D If the remainder of j is equal to 0, then go to step S8; where T L is the return water temperature warning threshold;

[0061] S8, from the current τ D To the previous j time intervals, that is, including j unit time, take the corresponding historical exhaust pressure value for each unit time, construct an array and assign it, and get the array p c D [j], take the corresponding historical condensation return water temperature value per unit time, construct an array and assign it, and get the array T w D [j], calculate the average exhaust pressure in the j time interval, that is, array p c D The average value p of [j] c,m D , calculate the average condensation return water temperature in the j time interval, that is, the array T w D The average value T of [j] w,m D , and then make a judgment:

[0062] If p c,m D ≤αp c0 D or T w,m D ≤εT w0 D , then adjust the left and right wind curtain angles Θ to increase the offset angle Θ δ D , and the p at this time c,m D Assign to p c0 D 、T w,m D Assign to T w0 D For the next round of the program, and then delay j / N and re-enter step S2; if p c,m D >αp c0 D And T w,m D >εT w0 D , then further judge: if p c,m D ≥βp c0 D or T w,m D ≥ζTw0 D , then adjust the left and right wind curtain angles Θ to reduce the offset angle Θ δ D , and the p at this time c,m D Assign to p c0 D and T w,m D Assign to T w0 D For the next round of the program, and then delay j / N and re-enter step S2; if p c,m D <βp c0 D And T w,m D <ζT w0 D , then keep the current wind curtain angle unchanged and set the p c,m D Assign to p c0 D 、T w,m D Assign to T w0 D For the next round of the program, delay j / N and re-enter step S2; where ε is the coefficient of change of the condensing return water temperature drop; ζ is the coefficient of change of the condensing return water temperature rise.

[0063] It can be understood that each counting parameter is counted by 1 after entering the corresponding mode according to the program design, and is accumulated as the program runs.

[0064] Preferably, j is divisible by N, and both j and N are customized by the user according to actual conditions;

[0065] Specifically, α<1, β>1, ε<1, ζ>1, γ>1, and the specific values ​​can be customized by the user according to actual conditions.

[0066] Specifically, the parameter values ​​such as each temperature threshold and each offset angle can be customized by the user according to actual conditions.

[0067] This embodiment dynamically adjusts the angle of the wind screen based on an assessment of the current operating status of the air-cooling island and the effectiveness of the previous adjustment of the air-cooling island's wind screens. This takes into account ambient temperature, condensing return water temperature, and unit exhaust steam pressure. This effectively adjusts the air-cooling island's aerodynamic field and the flow and heat dissipation capacity of the air-cooling condenser units in both summer and winter, as well as in transitional operating conditions, thereby improving the island's operational status. Furthermore, two early warning modes, based on condensing return water temperature and exhaust steam pressure, are introduced to ensure unit safety from the perspective of air-cooling island operation.

[0068] This embodiment also provides an electronic device, including a processor and a memory arranged to store computer-executable instructions, wherein when the executable instructions are executed, the processor executes the control method of the power plant air-cooling island rotating windproof curtain device.

[0069] This embodiment also provides a storage medium that stores one or more programs. When the one or more programs are executed by an electronic device including multiple application programs, the electronic device executes the control method of the power plant air-cooling island rotating windproof curtain device.

[0070] Those skilled in the art will understand that the foregoing descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will be able to modify the technical solutions described in the foregoing embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A control method for a rotary windproof curtain device of an air-cooled island in a power station, characterized in that: A rotating wind curtain device is used on the air-cooled island of the power plant. The wind curtain device is arranged above the air-cooled condenser unit to separate the flow field above the air-cooled condenser unit from left to right and to regulate the left and right flow fields. The cross section of the air-cooled condenser unit is an isosceles triangle. The air-cooled condenser unit includes an exhaust branch pipe. Both sides of the exhaust branch pipe are connected to the left and right return pipes through finned tube bundles, and an axial flow fan is provided between the left and right return pipes. The structure of the windproof curtain device includes a vertical support frame, the bottom of which is arranged on the exhaust branch pipe, and a rotating shaft is provided on each of the left and right sides of the top of the vertical support frame. Each rotating shaft is provided with a windproof curtain that can rotate with it. The two windproof curtains can perform the following movements: When opened, the left wind curtain rotates clockwise, and the right wind curtain rotates counterclockwise, both rotating from horizontal to vertical; when closed, the left wind curtain rotates counterclockwise, and the right wind curtain rotates clockwise, both rotating from vertical to horizontal; among them, the wind curtain angle in the horizontal state is Θ= 90°, wind curtain angle in vertical position Θ= 0°; The control method comprises the following steps: S1, initialize winter mode counting parameter NumD = 0, transition mode initialization counting parameter NumG = 0, winter mode time counting parameter τ D =0, transition mode time counting parameter τ G =0, initialize the exhaust pressure reference value in winter mode p c0 D =0, condensing return water temperature reference value T w0 D =0, initialize the exhaust pressure reference value in transition mode p c0 G =0; S2. Get real-time ambient temperature T a , wind curtain angle Θ , compared with the ambient temperature T a with preset summer mode temperature thresholds T a1 Size, if T a ≥ T a1 , then enter summer mode: adjust the angles of the left and right wind curtains Θ= 0°, then delay j / N, re-enter step S2; wherein, j represents the time interval, which is an integer greater than 0, and N is an integer greater than 0; like T a < T a1 , compared with the ambient temperature T a With preset winter mode temperature thresholds T a2 Size, if T a ≥ T a2 , enter S3 transition mode, otherwise, enter S6 winter mode; S3, after entering the transition mode, set NumD to 0, NumG to 1, τ G add j / N; Then, determine whether NumG is equal to 1. If NumG is equal to 1, adjust the angles of the left and right wind curtains. Θ Increase the offset angle Θ δ G , get the current exhaust pressure of the unit p c and assign it to p c0 G , then adjust the angle of the wind curtain, and then delay j / N, re-enter step S2; if NumG is not equal to 1, then go to step S4; S4. Determine the current τ G right j Is the remainder equal to 0? If not, record the current exhaust pressure. p c , wind curtain angle Θ , and calculate the exhaust pressure margin Δ p c = p c − p b , if Δ p c ≤ γp b , then enter the exhaust pressure warning mode and adjust the angles of the left and right wind curtains Θ Increase the offset angle Θ p A And adjust the angle of the wind curtain, and then delay j / N, re-enter step S2; if Δ p c > γp b , then keep the current wind curtain angle unchanged, delay j / N, re-enter step S2; if the current τ G right j If the remainder is equal to 0, then go to step S5; wherein, γ 、 p b They are exhaust pressure warning coefficient and blocking back pressure respectively; S5, from the current τ G to the previous j In the time interval, take the corresponding historical exhaust pressure value per unit time, construct an array and assign it, and get the array p c G [ j ], calculate the array p c G [ j ] the average value p c,m G ;like p c,m G ≤ αp c0 G , then adjust the angle of the left and right wind curtains Θ Increase the offset angle Θ δ G , and at this time p c,m G Assign to p c0 G , and then delay j / N, re-enter step S2; like p c,m G > αp c0 G , then further judge: If p c,m G ≥ βp c0 G , then adjust the angle of the left and right wind curtains Θ Each reduction offset angle Θ δ G , and at this time p c,m G Assign to p c0 G , and then delay j / N, re-enter step S2; if p c,m G < βp c0 G , then keep the current wind curtain angle unchanged and set the p c,m G Assign to p c0 G , delay j / N, re-enter step S2; wherein, α is the exhaust pressure drop variation coefficient, β is the exhaust pressure rise variation coefficient; S6. After entering winter mode, set NumG to 0, NumD to 1, τ D add j / N; Then, determine whether NumD is equal to 1. If NumD is equal to 1, adjust the angles of the left and right wind curtains. Θ Increase the offset angle Θ δ D , record the current exhaust steam pressure p c and condensing water temperature T w And assign them to p c0 D and T w0 D , then adjust the angle of the wind curtain; then delay j / N, re-enter step S2; if NumD is not equal to 1, then go to step S7; S7, judging the current τ D right j Is the remainder equal to 0? If not, record the current exhaust pressure of the unit. p c , Current condensing return water temperature T w , wind curtain angle Θ , and calculate the exhaust pressure margin Δ p c = p c − p b , if Δ p c ≤ γp b , then enter the exhaust pressure warning mode and adjust the angles of the left and right wind curtains Θ Increase the offset angle Θ p A , and then delay j / N, re-enter step S2; if Δ p c > γp b , then further judge: If T w ≤ T L , then enter the return water temperature warning mode and adjust the angles of the left and right wind curtains Θ Increase the offset angle Θ w A , and then delay j / N, re-enter step S2, if T w > T L , then keep the current wind curtain angle unchanged, delay j / N, re-enter step S2; if the current τ D right j If the remainder is equal to 0, then go to step S8; wherein, T L is the return water temperature warning threshold; S8, from the current τ D to the previous j In the time interval, take the corresponding historical exhaust pressure value per unit time, construct an array and assign it, and get the array p c D [ j ], take the corresponding historical condensation return water temperature value per unit time, construct an array and assign it, and get the array T w D [ j ], calculate the array p c D [ j ] the average value p c,m D , calculate the array T w D [ j ] the average value T w,m D , and then make a judgment: like p c,m D ≤ αp c0 D or T w,m D ≤ εT w0 D , then adjust the angle of the left and right wind curtains Θ Increase the offset angle Θ δ D , and at this time p c,m D Assign to p c0 D 、 T w,m D Assign to T w0 D , and then delay j / N, re-enter step S2; if p c,m D > αp c0 D and T w,m D > εT w0 D , then further judge: If p c,m D ≥ βp c0 D or T w,m D ≥ ζT w0 D , then adjust the angle of the left and right wind curtains Θ Each reduction offset angle Θ δ D , and at this time p c,m D Assign to p c0 D as well as T w,m D Assign to T w0 D , and then delay j / N, re-enter step S2; if p c,m D < βp c0 D and T w,m D < ζT w0 D , then keep the current wind curtain angle unchanged and set the p c,m D Assign to p c0 D 、 T w,m D Assign to T w0 D , delay j / N, re-enter step S2; wherein, ε is the coefficient of variation of condensing return water temperature drop; ζ is the coefficient of variation of the condensing return water temperature rise.

2. The control method according to claim 1, wherein α ＜1， β ＞1， ε ＜1， ζ ＞1， γ ＞1。 3. The control method according to claim 1, characterized in that j Divisible by N.

4. The control method according to claim 1, wherein When the air-cooled condenser unit is operating in summer, the two windproof curtains are adjusted to a vertical state to separate the flow field above the air-cooled condenser unit and alleviate the interference of ambient wind; when the air-cooled condenser unit is operating in winter, the two windproof curtains are gradually adjusted to a horizontal state according to the current operating conditions to slow down the flow and heat dissipation capacity of the air-cooled condenser unit.

5. The control method according to claim 1, characterized in that The two windproof curtains are arranged symmetrically on both sides, and the symmetry axis coincides with the symmetry axis of the isosceles triangle.

6. The control method according to claim 1, characterized in that When the left and right windproof curtains are in a horizontal state, they can completely cover the vertical projection of the air-cooled condenser unit.

7. The control method according to claim 1, characterized in that: A seal is provided between the left and right windproof curtains.

8. An electronic device, characterized in that: The invention comprises a processor and a memory arranged to store computer-executable instructions, wherein when the executable instructions are executed, the processor executes the control method of the rotary wind-proof curtain device of the air-cooling island of a power plant according to any one of claims 1 to 7.

9. A storage medium storing one or more programs, which, when executed by an electronic device comprising a plurality of application programs, enables the electronic device to execute the control method of the rotary wind-proof curtain device of the air-cooled island of a power plant as described in any one of claims 1 to 7.

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