LU503646B1 - A positive pressure air supply system, method and device for an offshore wind farm - Google Patents

A positive pressure air supply system, method and device for an offshore wind farm Download PDF

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Publication number
LU503646B1
LU503646B1 LU503646A LU503646A LU503646B1 LU 503646 B1 LU503646 B1 LU 503646B1 LU 503646 A LU503646 A LU 503646A LU 503646 A LU503646 A LU 503646A LU 503646 B1 LU503646 B1 LU 503646B1
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LU
Luxembourg
Prior art keywords
preset
control valve
pressure difference
branch pipe
end branch
Prior art date
Application number
LU503646A
Other languages
French (fr)
Inventor
Siqi Wang
Mingye Liu
Zhaoying Zeng
Guofeng Liu
Xiangwu Zheng
Yingming Zhong
Xiaowei Zeng
Yabo Zhu
Song Jia
Jian Liu
Original Assignee
Huaneng Guangdong Shantou Offshore Wind Power Co Ltd
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Application filed by Huaneng Guangdong Shantou Offshore Wind Power Co Ltd filed Critical Huaneng Guangdong Shantou Offshore Wind Power Co Ltd
Application granted granted Critical
Publication of LU503646B1 publication Critical patent/LU503646B1/en

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Classifications

    • 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
    • F24F11/0001—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
    • 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

A positive pressure air supply system, method and device for an offshore wind farm comprise a fresh air system which treats and introduces the outside air into a positive pressure room, an air duct system used for connecting the fresh air system to the positive pressure room, an air volume control system which controls the opening of a control valve, a detection system which detects the inside and outside pressure difference and the end branch pipe pressure difference for the air duct system in real time, a judgment system used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtain the difference interval between the inside and outside pressure difference and the preset pressure difference interval, and a controller which selects the end branch pipe pressure difference according to the difference interval and controls the opening of the control valve.

Description

A positive pressure air supply system, method and device for an offshore wind farm
Technical Field
The invention relates to the technical field of air supply, in particular to a positive pressure air supply system, method and device for an offshore wind farm.
Background Art
Compared with the onshore wind power, the offshore wind power is in the high humidity, high salt mist and long-day harsh marine environment, which inevitably subjects the offshore booster station to a severe corrosion test. Corrosion problem has become one of the technical difficulties encountered by the offshore wind power. In the marine atmospheric environment with high salinity and high humidity, it is very easy to form micro cells and macro cells on the metal surface to increase the corrosion activity and destroy the passivation film on the metal surface. Therefore, the corrosion and performance reduction rate of materials is much faster than that in the land atmospheric environment. Meanwhile, there are a large number of steel dominant metal components in the offshore booster station, such as the oil tank shell of the main transformer, the cooling fin, the switch cabinet, and the shell of the control protection cabinet.
The salt mist is deposited on the surface of the electrical equipment, and the sediments are ionized under the action of electromagnetic field to form a conductive film, which reduces the insulation level of the electrical equipment. Therefore, the failure rate of the electrical equipment will greatly increase. In recent years, more and more attention is paid to marine environment anti-corrosion research, and various anti-corrosion technologies are developed rapidly, but they cannot meet the development needs of the offshore wind power.
To solve the above problems, direct exposure of electrical equipment to the marine atmosphere should be avoided, and the equipment should be maintained in a relatively closed environment. In addition, the room should maintain positive pressure and be equipped with a positive pressure air supply system to prevent outside air from salt mist corrosion of electrical equipment. At present, the positive pressure air supply system of the offshore booster station cannot accurately control the air volume required by the positive pressure room, and cannot effectively prevent the corrosion of the equipment caused by the sea breeze, increasing the energy consumption of the air conditioning system. Therefore, how to provide a positive pressure air supply system, method and device for an offshore wind farm is an urgent technical problem that technicians in this field need to solve.
Summary of the Invention
The invention aims to provide a positive pressure air supply system, method and device for an offshore wind farm, which can effectively realize strict control of the air volume required byl4/503646 positive pressure room, reduce the energy consumption of an air conditioning system, and greatly reduce the possibility of overpressure in the positive pressure room, and greatly prevent the equipment corrosion caused by sea breeze. The system comprises:
A fresh air system, which treats the outside air and introduces it into a positive pressure room;
An air duct system, which is used for connecting the fresh air system to the positive pressure room;
An air volume control system, which controls the opening of a control valve;
A detection system, which is used to detect in real time the inside and outside pressure difference of the positive pressure room and the end branch pipe pressure difference for the air duct system and send to a judgement system;
A judgment system, which is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtains the difference interval between the inside and outside pressure difference and the preset pressure difference interval when inside and outside pressure difference is not within the preset pressure difference interval;
A controller, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve until the inside and outside pressure difference is within the preset pressure difference interval;
The outside air treatment procedure includes filtration, salt mist removal, dehumidification and cooling, and then the outside air is delivered into the positive pressure room.
In some embodiments of the application, the controller is used to select the corresponding end branch pipe pressure difference according to the difference interval, including the following steps:
The controller is provided with a preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein NI is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, N4 is the fourth preset difference interval, and N1<N2<N3<N4;
Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4;
Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipé&/503646 pressure difference according to the relationship between c and the preset difference interval matrix N;
When c<NI, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve;
When N1 <c<N2, select the third preset end branch pipe pressure difference interval B3 to control the opening of the control valve;
When N2<<c<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve;
When N3=<<c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
In some embodiments of the application, the controller is used to control the opening of the control valve according to the end branch pipe pressure difference, including the following steps:
The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, L3,
L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, L4 is the fourth preset control valve opening, and L1<L2<L3<L4;
Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B;
Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval B1;
Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2;
Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3;
Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
In some embodiments of the application, a positive pressure air supply system, method and device for an offshore wind farm also includes the following steps:
Detect the fan speed of a fresh air handling unit in real time, and correct the opening of thé/503646 control valve according to the fan speed,
The controller is provided with a preset fan speed matrix V and a preset control valve opening correction coefficient matrix a. Set V (V1, V2, V3, V4) for the preset fan speed matrix
V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4;
Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, a4 is the fourth preset control valve opening correction coefficient, and al<a2<a3<a4;
Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and i=1,2,3,4;
When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a4;
When V1<Æs<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a3;
When V2Ss<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is L1*a2;
When V3<s<V4, select the first preset control valve opening correction coefficient al to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*al;
In some embodiments of the application, a positive pressure air supply system, method and device for an offshore wind farm also comprises:
An alarm system, which 1s used to send an alarm signal to the controller when the inside and outside pressure difference is not within the preset pressure difference interval within a preset time.
In some embodiments of the application, a positive pressure air supply method for an offshore wind farm also includes:
Step 1: Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference, and send the inside and outside pressure difference and the end brand{/503646 pipe pressure difference to the controller;
Step 2: Compare the indoor and outdoor pressure difference and the preset pressure difference interval to obtain the difference interval, and select the corresponding end branch pipe 5 pressure difference according to the difference interval to control the opening of the control valve;
Step 3: Control the opening of the control valve according to the end branch pipe pressure difference, detect the fan speed in the fresh air system in real time, and correct the opening of the control valve according to the fan speed.
In some embodiments of the application, the corresponding end branch pipe pressure difference is selected according to the difference interval to control the opening of the control valve, including the following steps:
A preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B are preset. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein NI is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, and N4 is the fourth preset difference interval, and
N1<N2<N3<N4,
Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4;
Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipe pressure difference according to the relationship between c and the preset difference interval matrix N;
When c<NI, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve;
When N1Æc<N2, select the third preset end branch pipe pressure difference interval B3 to control the opening of the control valve;
When N2Æc<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve;
When N3 <c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
In some embodiments of the application, the opening of the control valve is controlléd/503646 according to the end branch pipe pressure difference of the, including the following steps:
The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, L3,
L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, L4 is the fourth preset control valve opening, and L1<L2<L3<L4;
Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B;
Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval B1;
Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2;
Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3;
Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
In some embodiments of the application, the fan speed of the fresh air system is detected in real time, and the opening of the control valve is corrected according to the fan speed, including the following steps:
A preset fan speed matrix V and a preset valve opening correction coefficient matrix à are preset. Set V (V1, V2, V3, V4) for the preset fan speed matrix V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4;
Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, a4 is the fourth preset control valve opening correction coefficient, and ol<a2<a3<o4;
Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and i=1,2,3,4; LU503646
When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a4;
When V1&s<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a3;
When V2&s<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is Li*a2;
When V3&s<V4, select the first preset control valve opening correction coefficient al to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*al;
In some embodiments of the application, a positive pressure air supply device for an offshore wind farm also comprises:
A fresh air device, which is arranged outside the positive pressure room and is used to treat and introduce the outside air into the positive pressure room;
An air duct device, one end of which is connected with the fresh air device, and the other end of which is connected with an air volume control device;
An air volume control device, which 1s installed in the positive pressure room and is used to control the opening of the control valve;
A first pressure difference transducer, which is arranged on the wall of the positive pressure room and 1s used for real-time detection of the inside and outside pressure difference;
A second pressure difference transducer, which is arranged at the end of the air duct system and is used for real-time detection of the end branch pipe pressure difference of the air duct system;
A judgment module, which is arranged in the controller and is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtain the difference interval between the inside and outside pressure difference and the preset pressure difference interval if the inside and outside pressure difference is not within the preset pressure difference interval;
A controller, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve;
Wherein, the fresh air device, the air volume control device, the first pressure difference transducer, the second pressure difference transducer, the judgment module and the controlle}503646 are electrically connected, and the fresh air device is successively
Compared with the prior art, the embodiments of the application bring the following beneficial effects:
The invention provides a positive pressure air supply system, method and device for an offshore wind farm. The system comprises a fresh air system, an air duct system, an air volume control system, a detection system, a judgment system and a controller, wherein the fresh air system treats the outside air and introduces it into a positive pressure room; the air duct system is used for connecting the fresh air system to the positive pressure room; the air volume control system controls the opening of a control valve; the detection system is used to detect in real time the inside and outside pressure difference of the positive pressure room and the end branch pipe pressure difference for the air duct system and send to the judgement system; the judgment system is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtains the difference interval between the inside and outside pressure difference and the preset pressure difference interval when inside and outside pressure difference is not within the preset pressure difference interval; the controller is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve until the inside and outside pressure difference is within the preset pressure difference interval; the outside air treatment procedure includes filtration, salt mist removal, dehumidification and cooling, and then the outside air is delivered into the positive pressure room. The system detects in real time the inside and outside pressure difference and the end branch pipe pressure difference, calculate the difference interval between the inside and outside pressure difference and the preset pressure difference interval when the inside and outside pressure difference is not within the preset pressure difference interval, and selects the corresponding end branch pipe pressure difference obtained according to the difference interval to control the opening of the control valve until the inside and outside pressure difference is within the preset pressure difference interval, thereby strictly controlling the air volume required by the positive pressure room, reducing the energy consumption of the air conditioning system, greatly reducing the possibility of overpressure in the positive pressure room, and greatly preventing the equipment corrosion caused by sea breeze.
Description of the Drawings
In order to more clearly describe the technical proposal in the embodiments of the application, a brief description of the drawings required for the description of the embodiments is given below. Obviously, the drawings described below are only some of the embodiments of the application, and the technicians in the field can obtain other drawings according to these drawings without any creative labor. LUS03646
Fig. 1 is the schematic diagram of a positive pressure air supply system for an offshore wind farm in the embodiment of the invention;
Fig. 2 is the flow diagram of a positive pressure air supply method for an offshore wind farm in the embodiment of the application;
Fig. 3 is the schematic diagram of a positive pressure air supply device for an offshore wind farm in the embodiment of the application;
Wherein, 1. Fresh air device; 101. Fan; 102. Filter, 103. Evaporator, 104. Condenser; 2. Air duct device; 3. Air volume control device; 4. First pressure difference transducer; 5. Second pressure difference transducer; 6. Controller; 7. Positive pressure room.
Embodiments
The embodiments of the invention are further described in detail below in combination with the drawing and embodiments. The following embodiments are used to describe the invention, but not used to limit the scope of the invention.
In the description of the application, it should be understood that the orientation or position relationships indicated by terms such as “center”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner” and “outer” are based on the orientation or position relationships shown in the drawings only for the convenience of describing the application and simplifying the description rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore they cannot be understood as restrictions on the application.
The terms “first” and “second” are used for descriptive purposes only and cannot be understood as indication or implication of the relative importance or implicit indication of the number of technical characteristics indicated. Thus, a characteristic defined as “first” or “second” may explicitly or implicitly include one or more of these characteristics. In the description of the application, “a plurality of” means two or more unless otherwise stated.
As shown in Fig. 1, a positive pressure air supply system for an offshore wind farm in the embodiment of the invention comprises:
A fresh air system, which treats the outside air and introduces it into a positive pressure room;
An air duct system, which is used for connecting the fresh air system to the positive pressure room;
An air volume control system, which controls the opening of a control valve;
A detection system, which is used to detect in real time the inside and outside pressuté/503646 difference of the positive pressure room and the end branch pipe pressure difference for the air duct system and send to a judgement system;
A judgment system, which is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtains the difference interval between the inside and outside pressure difference and the preset pressure difference interval when inside and outside pressure difference is not within the preset pressure difference interval;
A controller, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve until the inside and outside pressure difference is within the preset pressure difference interval,
The outside air treatment procedure includes filtration, salt mist removal, dehumidification and cooling, and then the outside air is delivered into the positive pressure room.
In the embodiment, a preset pressure difference interval (a0, b0) is set in advance, and the inside and outside pressure difference c is detected in real time, and the difference interval between the inside and outside pressure difference and the preset pressure difference interval is (c-a0, c-b0).
In some embodiments of the application, the controller is used to select the corresponding end branch pipe pressure difference according to the difference interval, including the following steps:
The controller is provided with a preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein NI is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, N4 is the fourth preset difference interval, and N1<N2<N3<N4;
Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4;
Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipe pressure difference according to the relationship between c and the preset difference interval matrix N;
When c<NI, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve;
When N1<Cc<N2, select the third preset end branch pipe pressure difference interval B3 t4/503646 control the opening of the control valve;
When N2<<c<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve;
When N3 <c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
In the embodiment, the difference interval may be positive or negative. When the difference interval is positive, the opening of the control valve is reduced; when the difference interval is negative, the opening of the control valve is increased to increase the air volume.
In some embodiments of the application, the controller is used to control the opening of the control valve according to the end branch pipe pressure difference, including the following steps:
The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, L3,
L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, L4 is the fourth preset control valve opening, and L1<L2<L3<L4;
Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B;
Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval B1;
Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2;
Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3;
Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
In some embodiments of the application, a positive pressure air supply system, method and device for an offshore wind farm also includes the following steps:
Detect the fan speed of a fresh air handling unit in real time, and correct the opening of the control valve according to the fan speed,
The controller is provided with a preset fan speed matrix V and a preset control val#&/503646 opening correction coefficient matrix a. Set V (V1, V2, V3, V4) for the preset fan speed matrix
V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4;
Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, a4 is the fourth preset control valve opening correction coefficient, and ol<a2<a3<o4;
Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and i=1,2,3,4;
When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a4;
When V1<Æs<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a3;
When V2Ss<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is L1*a2;
When V3<s<V4, select the first preset control valve opening correction coefficient al to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*al;
In some embodiments of the application, a positive pressure air supply system, method and device for an offshore wind farm also comprises:
An alarm system, which 1s used to send an alarm signal to the controller when the inside and outside pressure difference is not within the preset pressure difference interval within a preset time.
In some embodiments of the application, as shown in Fig. 2, a positive pressure air supply method for an offshore wind farm also includes the following steps:
Step 1 S101: Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference, and send the inside and outside pressure difference and the end branch pipe pressure difference to the controller;
Step 2 S102: Compare the indoor and outdoor pressure difference and the preset pressut&/503646 difference interval to obtain the difference interval, and select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve;
Step 3 S103: Control the opening of the control valve according to the end branch pipe pressure difference, detect the fan speed in the fresh air system in real time, and correct the opening of the control valve according to the fan speed.
In some embodiments of the application, the corresponding end branch pipe pressure difference is selected according to the difference interval to control the opening of the control valve, including the following steps:
A preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B are preset. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein N1 is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, and N4 is the fourth preset difference interval, and
NI<N2<N3<N4;
Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4;
Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipe pressure difference according to the relationship between c and the preset difference interval matrix N;
When c<NI, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve;
When N1Æc<N2, select the third preset end branch pipe pressure difference interval B3 to control the opening of the control valve;
When N2Æc<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve;
When N3 <c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
In some embodiments of the application, the opening of the control valve is controlled according to the end branch pipe pressure difference of the, including the following steps:
The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, LBU503646
L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, L4 is the fourth preset control valve opening, and L1<L2<L3<L4;
Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B;
Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval B1;
Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2;
Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3;
Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
In some embodiments of the application, the fan speed of the fresh air system is detected in real time, and the opening of the control valve is corrected according to the fan speed, including the following steps:
A preset fan speed matrix V and a preset valve opening correction coefficient matrix à are preset. Set V (V1, V2, V3, V4) for the preset fan speed matrix V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4;
Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, 04 is the fourth preset control valve opening correction coefficient, and al<a2<a3<a4;
Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and i=1,2,3,4;
When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening 44503646
Li*a4;
When V1<Æs<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*a3;
When V2Ss<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is L1*a2;
When V3&s<V4, select the first preset control valve opening correction coefficient al to correct the ith preset control valve opening, and the corrected ith preset control valve opening is
Li*al;
In some embodiments of the application, as shown in Fig. 3, a positive pressure air supply device for an offshore wind farm also comprises:
A fresh air device 1, which is arranged outside the positive pressure room 7 and is used to treat and introduce the outside air into the positive pressure room 7,
An air duct device 2, one end of which is connected with the fresh air device 1, and the other end of which is connected with an air volume control device 3;
An air volume control device 3, which is installed in the positive pressure room 7 and is used to control the opening of the control valve 8;
A first pressure difference transducer 5, which is arranged on the wall of the positive pressure room 7 and is used for real-time detection of the inside and outside pressure difference;
A second pressure difference transducer 4, which is arranged at the end of the air duct device 2 and is used for real-time detection of the end branch pipe pressure difference of the air duct device 2;
A judgment module, which is arranged in the controller 6 and is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtain the difference interval between the inside and outside pressure difference and the preset pressure difference interval if the inside and outside pressure difference is not within the preset pressure difference interval;
A controller 6, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve 8;
Wherein, the fresh air device 1, the air volume control device 3, the first pressure difference transducer 5, the second pressure difference transducer 4, the judgement device and the controller 6 are electrically connected, the fresh air device 1 is successively provided with a fan 101, a filter 102, an evaporator 103 and a condenser 104. LU503646
Through the above description of embodiments, technicians in the field can clearly understand that the invention can be realized by hardware or by means of software and necessary common hardware platforms. Based on this understanding, the technical proposal of the invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash disk, or mobile hard disk, etc.), including several instructions to make a computer equipment (which can be a personal computer, server or network equipment, etc.) perform the method described in each embodiment of the invention.
Finally, it should be noted that the above embodiments are used only to describe the technical proposal of the application but not used to restrict it, although the invention is described in detail by reference to the above embodiments, the ordinary technicians in the field should understand that they may modify the technical proposal in the aforementioned embodiments or make equivalent substitution of some of the technical characteristics; such modification or equivalent substitution does not drive the essence of the corresponding technical proposal to depart from the spirit and scope of the technical proposal of the invention.

Claims (10)

CLAIMS LU503646
1. A positive pressure air supply system for an offshore wind farm, which is characterized in that the positive pressure air supply system comprises: A fresh air system, which treats the outside air and introduces it into a positive pressure room; An air duct system, which is used for connecting the fresh air system to the positive pressure room; An air volume control system, which controls the opening of a control valve; A detection system, which is used to detect in real time the inside and outside pressure difference of the positive pressure room and the end branch pipe pressure difference for the air duct system and send the inside and outside pressure difference of the positive pressure room and the end branch pipe pressure difference to a judgement system; A judgment system, which is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtains the difference interval between the inside and outside pressure difference and the preset pressure difference interval when inside and outside pressure difference 1s not within the preset pressure difference interval; A controller, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve until the inside and outside pressure difference is within the preset pressure difference interval, The outside air treatment procedure includes filtration, salt mist removal, dehumidification and cooling, and then the outside air 1s delivered into the positive pressure room.
2. A positive pressure air supply system for an offshore wind farm according to Claim 1, which is characterized in that the controller is used to select the corresponding end branch pipe pressure difference according to the difference interval, including the following steps: The controller is provided with a preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein N1 is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, N4 is the fourth preset difference interval, and NI<N2<N3<N4; Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4; Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipe presdtp@3646 difference according to the relationship between c and the preset difference interval matrix N; When c<N1, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve; When N1<<c<N2, select the third preset end branch pipe pressure difference interval B3 to control the opening of the control valve; When N2c<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve; When N3 <c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
3. A positive pressure air supply system for an offshore wind farm according to Claim 2, which is characterized in that the controller is used to control the opening of the control valve according to the end branch pipe pressure difference, including the following steps: The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, L3, L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, LA is the fourth preset control valve opening, and L1<L2<L3<L4; Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B; Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval BI; Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2; Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3; Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
4. A positive pressure air supply system for an offshore wind farm according to Claim 3, which is characterized in that the positive pressure air supply system also includes the following steps: Detect the fan speed of a fresh air handling unit in real time, and correct the opening of the control valve according to the fan speed; LUS03646 The controller 1s provided with a preset fan speed matrix V and a preset control valve opening correction coefficient matrix a. Set V (V1, V2, V3, V4) for the preset fan speed matrix V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4; Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, a4 is the fourth preset control valve opening correction coefficient, and al<a2<03<a4; Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and i=1,2,3 4; When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is Li*a4; When V1&s<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is Li*a3; When V2Ss<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening 1s Li*a2; When V3<s<V4, select the first preset control valve opening correction coefficient al to correct the ith preset control valve opening, and the corrected ith preset control valve opening 1s Li*al;
5. A positive pressure air supply system for an offshore wind farm according to Claim 1, which is characterized in that the positive pressure air supply system also comprises: An alarm system, which is used to send an alarm signal to the controller when the inside and outside pressure difference is not within the preset pressure difference interval within a preset time.
6. A positive pressure air supply method for an offshore wind farm, which is characterized in that the positive pressure air supply method includes: Step 1: Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference, and send the inside and outside pressure difference and the end branch pipe pressure difference to the controller; Step 2: Compare the indoor and outdoor pressure difference and the preset pressure difference interval to obtain the difference interval, and select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve;
Step 3: Control the opening of the control valve according to the end branch pipe press{r23646 difference, detect the fan speed in the fresh air system in real time, and correct the opening of the control valve according to the fan speed.
7. A positive pressure air supply method for an offshore wind farm according to Claim 6, which is characterized in that the corresponding end branch pipe pressure difference is selected according to the difference interval to control the opening of the control valve, including the following steps: A preset difference interval matrix N and a preset end branch pipe pressure difference interval matrix B are preset. Set N (N1, N2, N3, N4) for the preset difference interval matrix N, wherein N1 is the first preset difference interval, N2 is the second preset difference interval, N3 is the third preset difference interval, and N4 is the fourth preset difference interval, and N1<N2<N3<N4, Set B (B1, B2, B3, B4) for the preset end branch pipe pressure difference interval matrix B, wherein B1 is the first preset end branch pipe pressure difference interval, B2 is the second preset end branch pipe pressure difference interval, B3 is the third preset end branch pipe pressure difference interval, B4 is the fourth preset end branch pipe pressure difference interval, and B1<B2<B3<B4; Detect in real time the inside and outside pressure difference and the end branch pipe pressure difference to obtain a difference interval c, and select the corresponding end branch pipe pressure difference according to the relationship between c and the preset difference interval matrix N; When c<N1, select the fourth preset end branch pipe pressure difference interval B4 to control the opening of the control valve; When N1Æc<N2, select the third preset end branch pipe pressure difference interval B3 to control the opening of the control valve; When N2c<N3, select the second preset end branch pipe pressure difference interval B2 to control the opening of the control valve; When N3 <c<N4, select the first preset end branch pipe pressure difference interval B1 to control the opening of the control valve;
8. A positive pressure air supply method for an offshore wind farm according to Claim 7, which is characterized in that the opening of the control valve is controlled according to the end branch pipe pressure difference of the, including the following steps: The controller is provided with a preset control valve opening matrix L. Set L (L1, L2, L3, L4) for the preset control valve opening matrix L, wherein L1 is the first preset control valve opening, L2 is the second preset control valve opening, L3 is the third preset control valve opening, LA is the fourth preset control valve opening, and L1<L2<L3<L4; Control the opening of the control valve according to the relationship between the end branch pipe pressure difference and the preset end branch pipe pressure difference interval matrix B; LU503646 Control the opening of the control valve to the first preset control valve opening L1 when the end branch pipe pressure difference is within the first preset end branch pipe pressure difference interval BI; Control the opening of the control valve to the second preset control valve opening L2 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B2; Control the opening of the control valve to the third preset control valve opening L3 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B3; Control the opening of the control valve to the fourth preset control valve opening L4 when the end branch pipe pressure difference is within the second preset end branch pipe pressure difference interval B4.
9. A positive pressure air supply method for an offshore wind farm according to Claim 8, which is characterized in that the fan speed of the fresh air system is detected in real time, and the opening of the control valve is corrected according to the fan speed, including the following steps: A preset fan speed matrix V and a preset valve opening correction coefficient matrix o are preset. Set V (V1, V2, V3, V4) for the preset fan speed matrix V, wherein V1 is the first preset fan speed, V2 is the second preset fan speed, V3 is the third preset fan speed, V4 is the fourth preset fan speed, and V1<V2<V3<V4; Set a (al, a2, a3, a4) for the preset control valve opening correction coefficient matrix a, wherein al is the first preset control valve opening correction coefficient, a2 is the second preset control valve opening correction coefficient, a3 is the third preset control valve opening correction coefficient, a4 is the fourth preset control valve opening correction coefficient, and al<a2<03<a4; Detect the fan speed s in real time, select the corresponding correction factor to correct the ith preset control valve opening Li according to the relationship between s and the preset fan speed matrix V, and 1=1,2,3,4; When s<V1, select the fourth preset control valve opening correction coefficient a4 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is Li*a4; When V1&s<V2, select the third preset control valve opening correction coefficient a3 to correct the ith preset control valve opening, and the corrected ith preset control valve opening is Li*a3; When V2Ss<V3, select the second preset control valve opening correction coefficient a2 to correct the ith preset control valve opening, and the corrected ith preset control valve opening 1s Li*a2;
When V3<s<V4, select the first preset control valve opening correction coefficient 293646 correct the ith preset control valve opening, and the corrected ith preset control valve opening 1s Li*al;
10. A positive pressure air supply device for an offshore wind farm, which is characterized in that the positive pressure air supply device comprises: A fresh air device, which is arranged outside the positive pressure room and is used to treat and introduce the outside air into the positive pressure room; An air duct device, one end of which is connected with the fresh air device, and the other end of which is connected with an air volume control device; An air volume control device, which is installed in the positive pressure room and is used to control the opening of the control valve; A first pressure difference transducer, which is arranged on the wall of the positive pressure room and is used for real-time detection of the inside and outside pressure difference; A second pressure difference transducer, which is arranged at the end of the air duct system and is used for real-time detection of the end branch pipe pressure difference of the air duct system; A judgment module, which is arranged in the controller and is used to judge the relationship between the inside and outside pressure difference and the preset pressure difference interval and obtain the difference interval between the inside and outside pressure difference and the preset pressure difference interval if the inside and outside pressure difference is not within the preset pressure difference interval; A controller, which is used to select the corresponding end branch pipe pressure difference according to the difference interval to control the opening of the control valve; Wherein, the fresh air device, the air volume control device, the first pressure difference transducer, the second pressure difference transducer, the judgment module and the controller are electrically connected, and the fresh air device is successively provided with a filter, an evaporator and a condenser to treat the outside air.
LU503646A 2022-12-02 2023-03-14 A positive pressure air supply system, method and device for an offshore wind farm LU503646B1 (en)

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CN202211543023.8A CN116182305B (en) 2022-12-02 2022-12-02 Positive pressure air supply system, method and device for offshore wind farm

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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
CN109028440B (en) * 2018-08-01 2024-03-12 中国能源建设集团广东省电力设计研究院有限公司 Air supply system, booster station and control method of air supply 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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Effective date: 20230914