CN116182305B - Positive pressure air supply system, method and device for offshore wind farm - Google Patents

Positive pressure air supply system, method and device for offshore wind farm Download PDF

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Publication number
CN116182305B
CN116182305B CN202211543023.8A CN202211543023A CN116182305B CN 116182305 B CN116182305 B CN 116182305B CN 202211543023 A CN202211543023 A CN 202211543023A CN 116182305 B CN116182305 B CN 116182305B
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China
Prior art keywords
preset
regulating valve
interval
end branch
alpha
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CN202211543023.8A
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CN116182305A (en
Inventor
刘国锋
曾晓伟
钟应明
贾嵩
朱亚波
曾昭颖
刘明业
王思其
郑相武
刘建
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Huaneng Guangdong Shantou Offshore Wind Power Co Ltd
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Huaneng Guangdong Shantou Offshore Wind Power Co Ltd
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Priority to CN202211543023.8A priority Critical patent/CN116182305B/en
Priority to LU503646A priority patent/LU503646B1/en
Publication of CN116182305A publication Critical patent/CN116182305A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F24F2011/0004—Control or safety arrangements for ventilation for admittance of outside air to create overpressure in a room
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)

Abstract

The invention relates to the technical field of air supply, in particular to a positive pressure air supply system, a positive pressure air supply method and a positive pressure air supply device of an offshore wind farm, wherein the positive pressure air supply system comprises the following components: the fresh air system is used for introducing outdoor air into the positive pressure room after the outdoor air is processed; the air pipe system is used for communicating the fresh air system with the positive pressure room; the air quantity adjusting system is used for controlling the opening degree of the adjusting valve; the detection system is used for detecting indoor and outdoor pressure differences and pressure differences of end branch pipes of the air pipe system in real time; the judging system is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained; and the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference value interval and adjusting the opening of the regulating valve. The invention effectively realizes the strict control of the air quantity required by the positive pressure room, reduces the energy consumption of an air conditioning system and greatly prevents the corrosion of equipment caused by sea wind.

Description

Positive pressure air supply system, method and device for offshore wind farm
Technical Field
The invention relates to the technical field of air supply, in particular to a positive pressure air supply system, a positive pressure air supply method and a positive pressure air supply device of an offshore wind farm.
Background
Compared with land wind power, the offshore wind power is in a severe marine environment such as high humidity, high salt fog, long sunlight and the like, so that the offshore booster station is inevitably faced with severe corrosion test, and the corrosion problem becomes one of the technical problems encountered by the offshore wind power. The high-salt and high-humidity marine atmospheric environment is extremely easy to form micro cells and macro cells on the metal surface, the corrosion activity is increased, the passivation film on the metal surface is destroyed, and the corrosion and performance decline rate of the material is far faster than that in the land atmospheric environment. Meanwhile, a large number of metal components mainly made of steel exist on the offshore booster station, such as oil tank shells of main transformers, radiating fins, switch cabinets, shells of control protection cabinets and the like, salt mist is deposited on the surfaces of electrical equipment, and under the action of an electromagnetic field, the deposits are ionized to form a conductive film, so that the insulation level of the electrical equipment is reduced, and therefore, the failure rate of the electrical equipment is greatly increased. In recent years, the research on corrosion prevention of marine environments in China is more and more important, and various corrosion prevention technologies are rapidly developed, but still cannot meet the development requirements of offshore wind power.
To solve the above problems, it is first necessary to avoid the electrical equipment being directly exposed to the ocean atmosphere and to maintain the environment in which the equipment is located relatively closed. In order to prevent the outdoor air from corroding the salt mist of the electrical equipment, the room needs to keep positive pressure, and a positive pressure air supply system is arranged. At present, in the positive pressure air supply system of the offshore booster station in China, the air quantity required by a positive pressure room cannot be accurately controlled, the corrosion of sea air to equipment cannot be well prevented, and the energy consumption of an air conditioning system is increased, so that how to provide the positive pressure air supply system, method and device of the offshore wind farm is a technical problem which needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a positive pressure air supply system, a positive pressure air supply method and a positive pressure air supply device for an offshore wind farm, which can effectively realize the strict control of the air quantity required by a positive pressure room, reduce the energy consumption of an air conditioning system, greatly reduce the possibility of overpressure occurrence of the positive pressure room and greatly prevent equipment corrosion caused by sea wind. The system comprises:
the fresh air system is used for introducing outdoor air into the positive pressure room after the outdoor air is processed;
the air duct system is used for communicating the fresh air system with the positive pressure room;
The air quantity adjusting system is used for controlling the opening degree of the adjusting valve;
the detection system is used for detecting indoor and outdoor pressure differences of the positive pressure room and pressure differences of the tail end branch pipes of the air pipe system in real time and sending the pressure differences to the judgment system;
the judging system is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference value interval to adjust the opening of the adjusting valve until the indoor and outdoor pressure difference is in the preset pressure difference value interval and stopping adjusting;
the outdoor wind is processed by filtering, removing salt mist, dehumidifying and cooling, and then is sent into the positive pressure room.
In some embodiments of the application, the controller is configured to select the corresponding end branch differential pressure according to the difference interval, including:
a preset difference interval matrix N and a preset tail end branch pipe pressure difference interval matrix B are set in the controller, and N (N1, N2, N3 and N4) is set for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
Setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
when N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
when N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
when N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
In some embodiments of the application, the controller is configured to adjust the opening of the regulator valve according to the end branch differential pressure, including:
A preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
according to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
when the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
when the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
and when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
In some embodiments of the present application, the positive pressure air supply system, method and apparatus for an offshore wind farm further comprise:
detecting the rotating speed of a fan of the fresh air unit in real time, and correcting the opening of the regulating valve according to the rotating speed of the fan;
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are set in the controller, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and V3 is less than V4;
setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
When s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
In some embodiments of the present application, the positive pressure air supply system, method and apparatus for an offshore wind farm further comprise:
and the alarm system is used for sending an alarm signal to the controller when the indoor and outdoor pressure difference is not in the preset pressure difference value interval within the preset time.
In some embodiments of the application, there is also included a positive pressure air supply method for an offshore wind farm:
Step one: detecting indoor and outdoor pressure differences and end branch pipe pressure differences in real time, and sending the indoor and outdoor pressure differences and the end branch pipe pressure differences to a controller;
step two: performing difference between the indoor and outdoor pressure differences and a preset pressure difference value interval to obtain a difference value interval, and selecting a corresponding end branch pipe pressure difference according to the difference value interval to control the opening of the regulating valve;
step three: and adjusting the opening of the regulating valve according to the pressure difference of the tail end branch pipe, detecting the rotating speed of a fan in the fresh air system in real time, and correcting the opening of the regulating valve according to the rotating speed of the fan.
In some embodiments of the present application, the controlling the opening of the regulating valve by selecting the corresponding end branch differential pressure according to the difference interval includes:
presetting a preset difference interval matrix N and a preset tail end branch pipe differential pressure interval matrix B, and setting N (N1, N2, N3 and N4) for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
Detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
when N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
when N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
when N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
In some embodiments of the present application, the adjusting the opening of the adjusting valve according to the end branch differential pressure includes:
a preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
According to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
when the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
when the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
and when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
In some embodiments of the present application, detecting a fan rotation speed in a fresh air system in real time, correcting an opening of the regulating valve according to the fan rotation speed, including:
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are preset, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and less than V3 is less than V4;
Setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
when s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
In some embodiments of the application, there is also included a positive pressure air supply apparatus for an offshore wind farm:
the fresh air device is arranged at one side outside the positive pressure room and is used for introducing outdoor air into the positive pressure room after the outdoor air is processed;
one end of the air pipe device is connected with the fresh air device, and the other end of the air pipe device is connected with the air quantity adjusting device;
the air quantity adjusting device is arranged in the positive pressure room and is used for controlling the opening degree of the adjusting valve;
the first pressure difference sensor is arranged on the inner wall of the positive pressure room and is used for detecting indoor and outdoor pressure differences in real time;
the second differential pressure sensor is arranged at the tail end of the air pipe system and is used for detecting the differential pressure of the tail end branch pipe of the air pipe system in real time;
the judging module is arranged in the controller and is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference interval and adjusting the opening of the regulating valve;
The fresh air device is electrically connected with the air quantity adjusting device, the first pressure difference sensor, the second pressure difference sensor, the judging device and the controller, and the filter, the evaporator and the condenser are sequentially arranged on the fresh air device to treat outdoor air.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
the application provides a positive pressure air supply system, a positive pressure air supply method and a positive pressure air supply device for an offshore power generation field, wherein the positive pressure air supply system comprises the following components: the fresh air system is used for introducing outdoor air into the positive pressure room after the outdoor air is processed; the air duct system is used for communicating the fresh air system with the positive pressure room; the air quantity adjusting system is used for controlling the opening degree of the adjusting valve; the detection system is used for detecting indoor and outdoor pressure differences of the positive pressure room and pressure differences of the tail end branch pipes of the air pipe system in real time and sending the pressure differences to the judgment system; the judging system is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained; the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference value interval to adjust the opening of the adjusting valve until the indoor and outdoor pressure difference is in the preset pressure difference value interval and stopping adjusting; the outdoor wind is processed by filtering, removing salt mist, dehumidifying and cooling, and then is sent into the positive pressure room. The system detects indoor and outdoor pressure differences and end branch pipe pressure differences in real time, when the indoor and outdoor pressure differences are not in a preset pressure difference value interval, the difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is calculated, the corresponding obtained end branch pipe pressure difference is selected according to the difference value interval, the opening of the regulating valve is regulated until the indoor and outdoor pressure differences are in the preset pressure difference value interval, the regulation is stopped, the air quantity required by a positive pressure room is strictly controlled, the energy consumption of an air conditioning system is reduced, the possibility of the occurrence of the overpressure of the positive pressure room is greatly reduced, and the equipment corrosion caused by sea wind is greatly prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a positive pressure air supply system for an offshore wind farm in accordance with an embodiment of the present application;
FIG. 2 is a flow chart of a positive pressure air supply method for an offshore wind farm according to an embodiment of the application;
FIG. 3 is a schematic diagram of a positive pressure air supply device for an offshore wind farm in accordance with an embodiment of the application;
wherein:
1. a fresh air device; 101. a blower; 102. a filter; 103. an evaporator; 104. a condenser; 2. an air duct device; 3. an air volume adjusting device; 4. a first differential pressure sensor; 5. a second differential pressure sensor; 6. a controller; 7. a positive pressure room.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1, a positive pressure air supply system for an offshore wind farm according to an embodiment of the present application includes:
the fresh air system is used for introducing outdoor air into the positive pressure room after the outdoor air is processed;
The air duct system is used for communicating the fresh air system with the positive pressure room;
the air quantity adjusting system is used for controlling the opening degree of the adjusting valve;
the detection system is used for detecting indoor and outdoor pressure differences of the positive pressure room and pressure differences of the tail end branch pipes of the air pipe system in real time and sending the pressure differences to the judgment system;
the judging system is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference value interval to adjust the opening of the adjusting valve until the indoor and outdoor pressure difference is in the preset pressure difference value interval and stopping adjusting;
the outdoor wind is processed by filtering, removing salt mist, dehumidifying and cooling, and then is sent into the positive pressure room.
In this embodiment, a preset differential pressure interval (a 0, b 0) is preset, and the indoor and outdoor differential pressure c is detected in real time, so as to obtain a differential pressure interval (c-a 0, c-b 0) between the indoor and outdoor differential pressure and the preset differential pressure interval.
In some embodiments of the application, the controller is configured to select the corresponding end branch differential pressure according to the difference interval, including:
a preset difference interval matrix N and a preset tail end branch pipe pressure difference interval matrix B are set in the controller, and N (N1, N2, N3 and N4) is set for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
When N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
when N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
when N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
In this embodiment, the difference interval is positive or negative, and when the difference interval is positive, the opening of the adjusting valve is reduced, and when the difference interval is negative, the opening of the adjusting valve is increased to increase the air quantity.
In some embodiments of the application, the controller is configured to adjust the opening of the regulator valve according to the end branch differential pressure, including:
a preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
according to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
When the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
when the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
and when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
In some embodiments of the present application, the positive pressure air supply system, method and apparatus for an offshore wind farm further comprise:
detecting the rotating speed of a fan of the fresh air unit in real time, and correcting the opening of the regulating valve according to the rotating speed of the fan;
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are set in the controller, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and V3 is less than V4;
Setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
when s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
In some embodiments of the present application, the positive pressure air supply system, method and apparatus for an offshore wind farm further comprise:
and the alarm system is used for sending an alarm signal to the controller when the indoor and outdoor pressure difference is not in the preset pressure difference value interval within the preset time.
In some embodiments of the present application, as shown in fig. 2, a positive pressure air supply method for an offshore wind farm is further included:
step one S101: detecting indoor and outdoor pressure differences and end branch pipe pressure differences in real time, and sending the indoor and outdoor pressure differences and the end branch pipe pressure differences to a controller;
step two S102: performing difference between the indoor and outdoor pressure differences and a preset pressure difference value interval to obtain a difference value interval, and selecting a corresponding end branch pipe pressure difference according to the difference value interval to control the opening of the regulating valve;
step three S103: and adjusting the opening of the regulating valve according to the pressure difference of the tail end branch pipe, detecting the rotating speed of a fan in the fresh air system in real time, and correcting the opening of the regulating valve according to the rotating speed of the fan.
In some embodiments of the present application, the controlling the opening of the regulating valve by selecting the corresponding end branch differential pressure according to the difference interval includes:
Presetting a preset difference interval matrix N and a preset tail end branch pipe differential pressure interval matrix B, and setting N (N1, N2, N3 and N4) for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
when N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
when N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
When N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
In some embodiments of the present application, the adjusting the opening of the adjusting valve according to the end branch differential pressure includes:
a preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
according to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
when the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
when the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
And when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
In some embodiments of the present application, detecting a fan rotation speed in a fresh air system in real time, correcting an opening of the regulating valve according to the fan rotation speed, including:
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are preset, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and less than V3 is less than V4;
setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
When s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
In some embodiments of the present application, as shown in fig. 3, a positive pressure air supply device for an offshore wind farm is further included:
the fresh air device 1 is arranged on one side outside the positive pressure room 7, and the fresh air device 1 is used for introducing outdoor air into the positive pressure room 7 after processing the outdoor air;
one end of the air pipe device 2 is connected with the fresh air device 1, and the other end of the air pipe device 2 is connected with the air quantity adjusting device 3;
An air volume adjusting device 3, which is installed in the positive pressure room 7, wherein the air volume adjusting device 3 is used for controlling the opening degree of an adjusting valve 8;
the first differential pressure sensor 5 is arranged on the inner wall of the positive pressure room 7, and the first differential pressure sensor 5 is used for detecting indoor and outdoor differential pressure in real time;
the second differential pressure sensor 4 is arranged at the tail end of the air pipe device 2, and the second differential pressure sensor 4 is used for detecting the differential pressure of the tail end branch pipe of the air pipe device 2 in real time;
the judging module is arranged in the controller 6 and is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller 6 is used for selecting the corresponding end branch pipe pressure difference according to the difference interval and adjusting the opening of the regulating valve 8;
the fresh air device 1, the air quantity adjusting device 3, the first pressure difference sensor 5, the second pressure difference sensor 4, the judging device and the controller 6 are electrically connected, and the fresh air device 1 is sequentially provided with a fan 101, a filter 102, an evaporator 103 and a condenser 104.
From the above description of the embodiments, it will be clear to those skilled in the art that the present application may be implemented in hardware, or may be implemented by means of software plus necessary general hardware platforms. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.), and includes several instructions for causing a computer device (may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective implementation scenario of the present application.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (8)

1. A positive pressure air supply system for an offshore wind farm, comprising:
the fresh air system is used for introducing outdoor air into the positive pressure room after the outdoor air is processed;
the air duct system is used for communicating the fresh air system with the positive pressure room;
the air quantity adjusting system is used for controlling the opening degree of the adjusting valve;
the detection system is used for detecting indoor and outdoor pressure differences of the positive pressure room and pressure differences of the tail end branch pipes of the air pipe system in real time and sending the pressure differences to the judgment system;
the judging system is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference value interval to adjust the opening of the adjusting valve until the indoor and outdoor pressure difference is in the preset pressure difference value interval and stopping adjusting;
the outdoor wind is processed by filtering, removing salt mist, dehumidifying and cooling, and then is sent into the positive pressure room;
The controller is configured to select a corresponding end branch differential pressure according to the difference interval, and includes:
a preset difference interval matrix N and a preset tail end branch pipe pressure difference interval matrix B are set in the controller, and N (N1, N2, N3 and N4) is set for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
when N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
When N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
when N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
2. The positive pressure air supply system for an offshore wind farm of claim 1, wherein the controller is configured to adjust the opening of the regulator valve based on the end manifold pressure differential, comprising:
a preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
according to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
when the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
When the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
and when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
3. A positive pressure air supply system for an offshore wind farm as defined in claim 2, further comprising:
detecting the rotating speed of a fan of the fresh air unit in real time, and correcting the opening of the regulating valve according to the rotating speed of the fan;
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are set in the controller, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and V3 is less than V4;
setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
Detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
when s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
4. A positive pressure air supply system for an offshore wind farm as defined in claim 1, further comprising:
and the alarm system is used for sending an alarm signal to the controller when the indoor and outdoor pressure difference is not in the preset pressure difference value interval within the preset time.
5. A positive pressure air supply method for an offshore wind farm, applied to the positive pressure air supply system for an offshore wind farm according to any one of claims 1 to 4, comprising:
step one: detecting indoor and outdoor pressure differences and end branch pipe pressure differences in real time, and sending the indoor and outdoor pressure differences and the end branch pipe pressure differences to a controller;
step two: performing difference between the indoor and outdoor pressure differences and a preset pressure difference value interval to obtain a difference value interval, and selecting a corresponding end branch pipe pressure difference according to the difference value interval to control the opening of the regulating valve;
step three: the opening of the regulating valve is regulated according to the pressure difference of the tail end branch pipe, the rotating speed of a fan in the fresh air system is detected in real time, and the opening of the regulating valve is corrected according to the rotating speed of the fan;
the step of selecting the corresponding end branch pipe differential pressure according to the difference interval to control the opening of the regulating valve comprises the following steps:
presetting a preset difference interval matrix N and a preset tail end branch pipe differential pressure interval matrix B, and setting N (N1, N2, N3 and N4) for the preset difference interval matrix N, wherein N1 is a first preset difference interval, N2 is a second preset difference interval, N3 is a third preset difference interval, N4 is a fourth preset difference interval, and N1 is more than N2 and less than N3 and less than N4;
Setting B (B1, B2, B3 and B4) for the preset end branch differential pressure interval matrix B, wherein B1 is a first preset end branch differential pressure interval, B2 is a second preset end branch differential pressure interval, B3 is a third preset end branch differential pressure interval, B4 is a fourth preset end branch differential pressure interval, and B1 is more than B2 and less than B3 and less than B4;
detecting the indoor and outdoor differential pressure and the differential pressure of the tail end branch pipe in real time to obtain a differential value interval c, and selecting the corresponding differential pressure of the tail end branch pipe according to the relation between c and the preset differential value interval matrix N;
when c is smaller than N1, selecting a fourth preset tail end branch pipe differential pressure interval B4 to control the opening of the regulating valve;
when N1 is less than or equal to c and less than N2, selecting a third preset tail end branch pipe differential pressure interval B3 to control the opening of the regulating valve;
when N2 is less than or equal to c and less than N3, selecting a differential pressure interval B2 of the second preset tail end branch pipe to control the opening of the regulating valve;
when N3 is less than or equal to c and less than N4, selecting the differential pressure interval B1 of the first preset tail end branch pipe to control the opening of the regulating valve.
6. A positive pressure air supply method for an offshore wind farm according to claim 5, wherein the adjusting the opening of the regulating valve according to the end branch differential pressure comprises:
A preset regulating valve opening degree matrix L is set in the controller, L (L1, L2, L3 and L4) is set for the preset regulating valve opening degree matrix L, wherein L1 is a first preset regulating valve opening degree, L2 is a second preset regulating valve opening degree, L3 is a third preset regulating valve opening degree, L4 is a fourth preset regulating valve opening degree, and L1 is more than L2 and less than L3 and less than L4;
according to the relation between the pressure difference of the tail end branch pipe and the preset pressure difference interval matrix B of the tail end branch pipe, the opening of the regulating valve is regulated;
when the tail end branch pipe differential pressure is in the first preset tail end branch pipe differential pressure interval B1, adjusting the opening of the regulating valve to be the first preset regulating valve opening L1;
when the tail end branch pipe differential pressure is in the second preset tail end branch pipe differential pressure interval B2, adjusting the opening of the regulating valve to be the second preset regulating valve opening L2;
when the tail end branch pipe differential pressure is in the third preset tail end branch pipe differential pressure interval B3, adjusting the opening of the regulating valve to be the third preset regulating valve opening L3;
and when the tail end branch pipe differential pressure is in the fourth preset tail end branch pipe differential pressure interval B4, adjusting the opening of the regulating valve to be the fourth preset regulating valve opening L4.
7. The positive pressure air supply method for an offshore wind farm according to claim 6, wherein detecting a fan rotation speed in a fresh air system in real time, correcting an opening of the regulating valve according to the fan rotation speed, comprises:
a preset fan speed matrix V and a preset regulating valve opening correction coefficient matrix alpha are preset, and V (V1, V2, V3 and V4) is set for the preset fan speed matrix V, wherein V1 is a first preset fan speed, V2 is a second preset fan speed, V3 is a third preset fan speed, V4 is a fourth preset fan speed, and V1 is less than V2 and less than V3 is less than V4;
setting alpha (alpha 1, alpha 2, alpha 3 and alpha 4) for the preset regulating valve opening correction coefficient matrix alpha, wherein alpha 1 is a first preset regulating valve opening correction coefficient, alpha 2 is a second preset regulating valve opening correction coefficient, alpha 3 is a third preset regulating valve opening correction coefficient, alpha 4 is a fourth preset regulating valve opening correction coefficient, and alpha 1 is less than alpha 2 less than alpha 3 less than alpha 4;
detecting the fan rotating speed s in real time, selecting a corresponding correction coefficient according to the relation between the s and the preset fan rotating speed matrix V, and correcting the opening Li of the ith preset regulating valve, wherein i=1, 2,3 and 4;
When s is smaller than V1, selecting a fourth preset regulating valve opening correction coefficient alpha 4 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 4;
when V1 is less than or equal to s and less than V2, selecting a third preset regulating valve opening correction coefficient alpha 3 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 3;
when V2 is less than or equal to s and less than V3, selecting a second preset regulating valve opening correction coefficient alpha 2 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 2;
when V3 is less than or equal to s and less than V4, selecting the first preset regulating valve opening correction coefficient alpha 1 to correct the ith preset regulating valve opening, wherein the corrected ith preset regulating valve opening is Li x alpha 1.
8. A positive pressure air supply device for an offshore wind farm, comprising:
the fresh air device is arranged at one side outside the positive pressure room and is used for introducing outdoor air into the positive pressure room after the outdoor air is processed;
one end of the air pipe device is connected with the fresh air device, and the other end of the air pipe device is connected with the air quantity adjusting device;
The air quantity adjusting device is arranged in the positive pressure room and is used for controlling the opening degree of the adjusting valve;
the first pressure difference sensor is arranged on the inner wall of the positive pressure room and is used for detecting indoor and outdoor pressure differences in real time;
the second differential pressure sensor is arranged at the tail end of the air pipe system and is used for detecting the differential pressure of the tail end branch pipe of the air pipe system in real time;
the judging module is arranged in the controller and is used for judging the relation between the indoor and outdoor pressure differences and a preset pressure difference value interval, and if the indoor and outdoor pressure differences are not in the preset pressure difference value interval, a difference value interval between the indoor and outdoor pressure differences and the preset pressure difference value interval is obtained;
the controller is used for selecting the corresponding end branch pipe pressure difference according to the difference interval and adjusting the opening of the regulating valve;
the fresh air device is electrically connected with the air quantity adjusting device, the first pressure difference sensor, the second pressure difference sensor, the judging device and the controller, and the filter, the evaporator and the condenser are sequentially arranged on the fresh air device to treat outdoor air.
CN202211543023.8A 2022-12-02 2022-12-02 Positive pressure air supply system, method and device for offshore wind farm Active CN116182305B (en)

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LU503646A LU503646B1 (en) 2022-12-02 2023-03-14 A positive pressure air supply system, method and device for an offshore wind farm

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0297844A (en) * 1988-10-03 1990-04-10 Chiyoda Techno Ace Kk Air supply and exhaust device for structure
CN204006357U (en) * 2014-08-21 2014-12-10 南京健友生化制药股份有限公司 A kind of air-conditioning system and voltage stabilizing pipeline thereof
CN109028440A (en) * 2018-08-01 2018-12-18 中国能源建设集团广东省电力设计研究院有限公司 The control method of supply air system, booster stations and supply air system
CN113280494A (en) * 2021-05-10 2021-08-20 深圳华侨城文化旅游建设有限公司 Indoor wind balance control structure, method and system and intelligent terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0297844A (en) * 1988-10-03 1990-04-10 Chiyoda Techno Ace Kk Air supply and exhaust device for structure
CN204006357U (en) * 2014-08-21 2014-12-10 南京健友生化制药股份有限公司 A kind of air-conditioning system and voltage stabilizing pipeline thereof
CN109028440A (en) * 2018-08-01 2018-12-18 中国能源建设集团广东省电力设计研究院有限公司 The control method of supply air system, booster stations and supply air system
CN113280494A (en) * 2021-05-10 2021-08-20 深圳华侨城文化旅游建设有限公司 Indoor wind balance control structure, method and system and intelligent terminal

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