CN109028440B - Air supply system, booster station and control method of air supply system - Google Patents
Air supply system, booster station and control method of air supply system Download PDFInfo
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- CN109028440B CN109028440B CN201810865797.XA CN201810865797A CN109028440B CN 109028440 B CN109028440 B CN 109028440B CN 201810865797 A CN201810865797 A CN 201810865797A CN 109028440 B CN109028440 B CN 109028440B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- 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
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/62—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
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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
- F24F11/70—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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air supply system, a booster station and a control method of the air supply system. The air supply system comprises an air inlet pipeline; a fresh air unit; a first air volume regulator and a second air volume regulator; a first sensor and a second sensor; and a controller. The booster station comprises an equipment room and the air supply system. The control method of the air blowing system can be applied to the air blowing system and the booster station described above. Through the setting of first sensor and second sensor, first sensor real-time supervision equipment room's inside and outside differential pressure to obtain first differential pressure data, second sensor real-time supervision first air regulator both ends differential pressure, and obtain second differential pressure data, open first air regulator when first differential pressure data is unusual and adjust the intake that gets into equipment room by the air inlet pipeline, open second air regulator when second differential pressure data is unusual and adjust the intake that gets into fresh air handling unit, thereby guarantee that the atmospheric pressure in the equipment room remains stable, in order to guarantee the normal operating of equipment.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to an air supply system, a booster station and a control method of the air supply system.
Background
Offshore wind power generation is a novel power generation mode for generating power by utilizing offshore wind power resources. The offshore wind power generation equipment comprises a booster station, wherein the booster station is a system for carrying out charge-voltage conversion and is mainly used for boosting and reducing electric energy loss in electric energy transportation, and the cost is reduced.
However, the offshore environment is complex and changeable, once the offshore air invades the equipment room of the booster station, electrical equipment, fan equipment and mechanical equipment in the equipment room can be severely corroded, the service life of the equipment in the equipment room is influenced, and the safety and reliability of offshore operation can be seriously influenced.
Disclosure of Invention
Based on this, it is necessary to provide an air blowing system, a booster station, and a control method of the air blowing system. The air supply system can keep the air pressure in the booster station equipment room relatively stable, and ensure the equipment in the equipment room to run stably; the booster station adopts the air supply system, so that the booster station can operate more reliably, and the maintenance cost is reduced; the control method of the air supply system can keep the air pressure in the equipment room of the booster station relatively stable and prevent the air at sea from invading into the equipment room.
The technical scheme is as follows:
in one aspect, an air supply system is provided, which comprises an air inlet pipeline, wherein an air inlet end of the air inlet pipeline is positioned at the outer side of an equipment room, and an air outlet end of the air inlet pipeline is positioned at the inner side of the equipment room and communicated with the inner side of the equipment room; the fresh air unit is arranged at the air inlet end of the air inlet pipeline; the air quantity adjusting assembly comprises a first air quantity adjuster and a second air quantity adjuster, the first air quantity adjuster is used for adjusting the air quantity entering the equipment room from the air inlet pipeline, and the second air quantity adjuster is used for adjusting the air quantity entering the fresh air handling unit; the sensor assembly comprises a first sensor and a second sensor, the first sensor is used for detecting the pressure difference between the inside of the equipment room and the outside of the equipment room, and the second sensor is used for detecting the pressure difference between two ends of the first air quantity regulator; and the controller is electrically connected with the first air quantity regulator, the second air quantity regulator, the first sensor and the second sensor.
Above-mentioned new trend system, through the setting of first sensor and second sensor, first sensor real-time supervision equipment room's inside and outside differential pressure, and obtain first differential pressure data, second sensor real-time supervision first air regulator both ends differential pressure, and obtain second differential pressure data, open first air regulator and adjust the intake by the air inlet pipeline entering equipment room when first differential pressure data is unusual, open second air regulator and adjust the intake that gets into the fresh air unit when second differential pressure data is unusual, thereby guarantee that the atmospheric pressure in the equipment room remains stable, in order to guarantee the normal operating of equipment.
The technical scheme is further described as follows:
in one embodiment, the fresh air handling unit further comprises a driving fan, the second air quantity regulator further comprises a fan frequency converter, the fan frequency converter is electrically connected with the controller and used for controlling rotation of the driving fan, and the fresh air handling unit further comprises a salt spray filtering portion, a dehumidifying portion and a temperature adjusting portion.
In one embodiment, the controller is further provided with an operation panel; or the controller is also provided with a wireless transmitter.
On the other hand, still provide a booster station, including equipment room and air supply system as described above arbitrary technical scheme.
Above-mentioned booster station, owing to adopt foretell air supply system, the equipment room internal air pressure that can guarantee the booster station is stable relatively, and air supply system's fresh air unit is energy-conserving high-efficient, reduces the running cost.
The technical scheme is further described as follows:
in one embodiment, the equipment rooms are provided with a plurality of first sensors, second sensors and first air volume regulators, the air outlet ends of the air inlet pipelines are provided with a plurality of air outlet branches, the second sensors and the first air volume regulators are arranged on the corresponding air outlet branches, and one equipment room corresponds to one first sensor, one second sensor and one first air volume regulator.
In addition, the control method of the air supply system comprises the following steps:
(S1) detecting the pressure difference between the inside of the equipment room and the outside of the equipment room by a first sensor, and obtaining first pressure difference data;
(S2) comparing the first pressure difference data with first preset data, and if the first pressure difference data is larger than the first preset data, executing the step (S21); otherwise, executing the step (S22);
(S21) comprising the steps of:
(S211) the first sensor feeds back a first signal to the controller, and the controller controls the first air quantity regulator to reduce the air quantity entering the equipment room from the air inlet pipeline;
(S212) detecting the pressure difference between two ends of the first air quantity regulator by a second sensor, and obtaining second pressure difference data;
(S213) comparing the second pressure difference data with second preset data, and if the second pressure difference data is larger than the second preset data, feeding back a second signal to the controller by the second sensor, wherein the controller controls the second air quantity regulator to reduce the air quantity entering the fresh air unit; otherwise, go to step (S212);
(S22), proceeding to step (S1).
According to the control method of the air supply system, through real-time monitoring of the first sensor and the second sensor, once abnormality is found, real-time adjustment can be performed through the first air volume regulator and the second air volume regulator, so that the air pressure in the equipment room of the booster station is kept relatively stable.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an air supply system.
100. The air inlet pipeline 110, the air outlet branch 210, the first air quantity regulator 220, the second air quantity regulator 310, the first sensor 320, the second sensor 400, the controller 500, the fresh air unit 600 and the equipment room.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the attached drawings:
it will be understood that when an element is referred to herein as being "fixed" with respect to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in the embodiment of fig. 1, there is provided an air supply system, which includes an air intake pipe 100, an air intake end of the air intake pipe 100 is located at an outer side of an equipment room 600, and an air outlet end of the air intake pipe 100 is located at an inner side of the equipment room 600 and is communicated with an inner side of the equipment room 600; the fresh air unit 500, the fresh air unit 500 is arranged at the air inlet end of the air inlet pipeline 100; the air volume adjusting assembly comprises a first air volume adjuster 210 and a second air volume adjuster 220, wherein the first air volume adjuster 210 is used for adjusting the air inlet volume entering the equipment room 600 from the air inlet pipeline 100, and the second air volume adjuster 220 is used for adjusting the air inlet volume entering the fresh air handling unit 500; a sensor assembly including a first sensor 310 for detecting a pressure difference between the inside of the equipment room 600 and the outside of the equipment room 600, and a second sensor 320 for detecting a pressure difference between both ends of the first air volume regulator 210; and a controller 400, wherein the first air volume regulator 210, the second air volume regulator 220, the first sensor 310 and the second sensor 320 are electrically connected with the controller 400.
Through the arrangement of the first sensor 310 and the second sensor 320, the first sensor 310 monitors the internal and external pressure differences of the equipment room 600 in real time and obtains first pressure difference data, the second sensor 320 monitors the pressure differences at two ends of the first air volume regulator 210 in real time and obtains second pressure difference data, when the first pressure difference data is abnormal, the first air volume regulator 210 is started to regulate the air intake of the equipment room 600 from the air intake pipeline 100, and when the second pressure difference data is abnormal, the second air volume regulator 220 is started to regulate the air intake of the fresh air unit 500, so that the air pressure in the equipment room 600 is ensured to be kept stable, and the normal operation of equipment is ensured.
In general, the equipment room 600 of the offshore wind farm booster station is designed by adopting a positive pressure air supply system, and the constant influence of the weather parameter changes such as wind speed, temperature and the like outside the equipment room 600 in the booster station on the positive pressure value in the equipment room 600 is large. Conventionally, the positive pressure control of the residual pressure valve is adopted, the air quantity fed into the equipment room 600 is constant, and when the preset air pressure value is exceeded, the residual pressure valve is opened to discharge the air in the equipment room 600 so as to maintain the stable pressure difference value inside and outside the equipment room 600. However, there are two disadvantages to this approach:
1. although the pressure difference between the inside and the outside of the equipment room 600 is kept stable finally, when the residual pressure valve is opened to perform the exhausting and the depressurizing, the air pressure in the equipment room 600 is increased to a certain degree, which affects the running equipment in the equipment room 600 more or less and causes the air pressure in the equipment room 600 to have a transient unstable condition;
2. by adopting the exhaust and decompression method of the residual pressure valve, the air quantity of the positive pressure air supply system is easy to be overlarge, the energy consumption is high, the waste of resources is caused, and meanwhile, the service life of the positive pressure air supply system is also shortened, and the maintenance cost is increased.
In this embodiment, through the arrangement of the first sensor 310, the second sensor 320, the first air volume regulator 210 and the second air volume regulator 220, when the first sensor 310 and the second sensor 320 detect abnormal data, the abnormal data is fed back to the controller 400, and the controller 400 respectively controls the first air volume regulator 210 and the second air volume regulator 220 to perform corresponding air intake control, so that the air pressure in the equipment room 600 is kept stable.
Further, the first sensor 310 may be a sensor that can be used to detect the air pressure inside and outside the equipment room 600 and automatically calculate the pressure difference; the first sensor 310 may also be two sensors capable of measuring air pressure, one sensor is disposed outside the equipment room 600, one sensor is disposed inside the equipment room 600, and the two sensors respectively detect air pressure outside the corresponding equipment room 600 and air pressure inside the equipment room 600, and further calculate to obtain a pressure difference, so that a person skilled in the art can perform specific setting according to needs; the second sensor 320 is similar, and may be specifically selected according to need in the art, and will not be described herein.
Further, as shown in fig. 1, the first air volume regulator 210 is disposed at a position of the air inlet pipeline 100 near the air outlet end, so that the first air volume regulator 210 can directly regulate the air outlet at the air outlet end, thereby achieving the technical effect of accurately regulating the air inlet volume entering the equipment room 600 from the air inlet pipeline 100.
Alternatively, the first air volume regulator 210 includes a regulating valve for regulating the volume of air entering the equipment room 600, and the opening of the regulating valve is reduced to reduce the volume of air entering the equipment room 600.
Optionally, the controller 400 may be a DDC (Direct Digital Control) controller 400, i.e. direct digital control, which has high control efficiency and achieves the purpose of energy-saving operation.
It should be noted that, the detection data of the first sensor 310 and the second sensor 320 can be fed back to the controller 400 in real time, or can be fed back to the controller 400 when abnormal data is detected, and those skilled in the art can perform specific settings according to needs, which is not described herein.
In addition, the second sensor 320 detects the pressure difference across the first air volume regulator 210, which is the pressure difference between the first air volume regulator 210 on the equipment room 600 side and the air intake pipe 100 side, that is, the air intake pressure loss at the end of the air intake pipe 100. After the first air volume regulator 210 regulates the air volume entering the equipment room 600 from the air intake pipeline 100, if the fresh air handling unit 500 does not regulate the air volume, the air volume entering the air intake pipeline 100 from the fresh air handling unit 500 cannot be matched with the air volume entering the equipment room 600 from the air intake pipeline 100. Therefore, the second sensor 320 is required to detect the pressure difference across the first air volume regulator 210 to further adjust the air volume entering the fresh air handling unit 500 from the outside, thereby adjusting the air volume entering the air intake duct 100 and thus adjusting the total air volume.
If the equipment room 600 is provided with a plurality of the second sensors 320 and the second air volume regulator 220, the arrangement is more necessary. This is because: after each second air volume regulator 220 regulates the air intake into the equipment room 600, if the air intake of the fresh air handling unit 500 into the air intake pipeline 100 is not regulated by the second air volume regulator 220 in time, the air intake of the whole equipment room 600 is easily mismatched with the air intake of the fresh air handling unit 500 introduced from the outside.
As shown in the embodiment of fig. 1, the fresh air handling unit 500 further includes a driving fan, the second air volume regulator 220 further includes a fan frequency converter electrically connected to the controller 400 and used for controlling rotation of the driving fan, and the fresh air handling unit 500 further includes a salt spray filtering portion, a dehumidifying portion, and a temperature adjusting portion
The fan frequency converter is energy-saving and efficient, and the operation precision and the control efficiency are improved. The fresh air handling unit 500 is disposed at one side of the air intake end of the air intake pipeline 100. Because the offshore air belongs to high-salt mist, high-temperature and high-humidity gas, once the offshore air invades into the equipment room 600 of the offshore booster station, electrical equipment, fan equipment, mechanical equipment and the like in the equipment room 600 can be severely corroded, so that the service life of the equipment is influenced, and the safety and reliability of offshore operation are also seriously influenced. Therefore, a fresh air handling unit 500 is disposed at the air intake end side of the air intake pipeline 100, and a processing unit such as a salt spray filtering unit, a dehumidifying unit, and a temperature adjusting unit is disposed in the fresh air handling unit 500, so as to process the external air entering the air intake pipeline 100, and improve the quality of the air entering the equipment room 600.
It should be noted that:
the salt fog filtering part is used for treating salt fog components in the offshore air;
the dehumidifying part is used for treating moisture or moisture part in the offshore air;
the temperature adjusting part is used for processing the temperature of the marine air so as to be in a preset temperature range and enter the air inlet pipeline 100, and the marine air is usually cooled;
of course, the fresh air handling unit 500 includes, but is not limited to, several of the above treatments, and those skilled in the art can make specific arrangements as needed to meet the offshore air handling requirements of the incoming air intake 100. The fresh air handling unit 500 is further provided with a dryer section and the like, for example, according to a preset air dryness requirement.
As in the embodiment shown in fig. 1, the controller 400 is further provided with an operation panel; or the controller 400 is also provided with a wireless transmitter.
The operation panel is used for setting the air pressure parameters, the control parameters and the display lamps of the current air pressure state by the staff, and can be arranged at a position convenient to operate according to the needs, as shown in fig. 1, can be arranged at the operation part of the fresh air handling unit 500, can be arranged in the equipment room 600 according to the needs, and is not repeated here;
of course, the controller 400 may also be provided with a wireless transmitter, based on which the air pressure data of the equipment room 600, etc. are transmitted to a preset receiver, and the controller 400 is controlled by remote operation.
Based on any of the above embodiments, the air supply system further includes an alarm electrically connected to the controller 400. When the first sensor 310 and the second sensor 320 detect abnormal data and the controller 400 is required to control the first air volume regulator 210 and the second air volume regulator 220 to regulate the air entering the equipment room 600, the alarm emits light or gives out an alarm to remind the operation or the next operation process.
The air supply system provided in this embodiment has the following advantages:
1. the first sensor 310 and the second sensor 320 are adopted to monitor the pressure difference data in real time and feed back the pressure difference data to the DDC controller 400 in real time, so that the accurate adjustment of the air quantity entering the equipment room 600 is realized, the air pressure in the equipment room 600 is kept stable, the adjustment is flexible, and compared with the traditional overpressure and pressure relief mode, the air supply system provided by the embodiment has the advantages of adjustable air quantity and low conveying energy consumption;
2. the air pressure is monitored in real time, the air quantity is regulated in real time, the pressure regulating precision is high, the air pressure control in the equipment room 600 is more accurate and stable, the possibility of overpressure in the equipment room 600 is greatly reduced, and the equipment room is prevented from being damaged in the future;
3. simple structure, convenient operation, low cost and strong realizability.
The present embodiment also provides a booster station, which includes the equipment room 600 and the air supply system according to any one of the foregoing embodiments.
By adopting the air supply system, the air pressure in the equipment room 600 of the booster station can be ensured to be relatively stable, the fresh air handling unit 500 of the air supply system is energy-saving and efficient, and the operation cost is reduced.
As shown in the embodiment of fig. 1, the equipment room 600 is provided with a plurality of first sensors 310, second sensors 320 and first air volume regulators 210, the air outlet end of the air inlet pipeline 100 is provided with a plurality of air outlet branches 110, the second sensors 320 and the first air volume regulators 210 are arranged on the corresponding air outlet branches 110, and one equipment room 600 corresponds to one first sensor 310, one second sensor 320 and one first air volume regulator 210.
As shown in fig. 1, two equipment rooms 600 are provided, correspondingly, two first sensors 310, second sensors 320, first air volume regulators 210 and air outlet branches 110 are provided, external air enters the air inlet pipelines 100 from the fresh air handling unit 500 and enters the corresponding equipment rooms 600 through the air outlet branches 110, meanwhile, the first sensors 310 and the second sensors 320 monitor corresponding differential pressure data in real time, and the controller 400 receives the differential pressure data detected by the first sensors 310 and the second sensors 320 and determines whether to start the first air volume regulators 210 and the second air volume regulators 220 to regulate, so that the technical effect of keeping the air pressure in each equipment room 600 stable is achieved.
In addition, the present embodiment also provides a control method of an air supply system, where the control method of an air supply system can be applied to the air supply system and the booster station, and includes the following steps:
(S1) the first sensor 310 detecting a pressure difference between the inside of the equipment room 600 and the outside of the equipment room 600 and obtaining first pressure difference data;
(S2) comparing the first pressure difference data with first preset data, and if the first pressure difference data is larger than the first preset data, executing the step (S21); otherwise, executing the step (S22);
(S21) comprising the steps of:
(S211), the first sensor 310 feeds back a first signal to the controller 400, and the controller 400 controls the first air volume regulator 210 to reduce the air volume entering the equipment room 600 from the air inlet pipeline 100;
(S212) the second sensor 320 detects the pressure difference between the two ends of the first air volume regulator 210 and obtains second pressure difference data;
(S213) comparing the second pressure difference data with the second preset data, and if the second pressure difference data is greater than the second preset data, feeding back a second signal to the controller 400 by the second sensor 320, wherein the controller 400 controls the second air volume regulator 220 to reduce the air intake of the fresh air handling unit 500; otherwise, go to step (S212);
(S22), proceeding to step (S1).
Through the real-time monitoring of the first sensor 310 and the second sensor 320, once abnormality is found, real-time adjustment can be performed through the first air volume regulator 210 and the second air volume regulator 220, so that the air pressure in the equipment room 600 of the booster station is kept relatively stable.
It should be noted that, when the equipment room 600 is plural, the controller 400 receives the differential pressure data of the first sensors 310 and the second sensors 320, compares the differential pressure data according to the data preset by a person skilled in the art, and makes an overall judgment based on the overall data preset by the person skilled in the art according to the need, so as to determine whether to open the corresponding first air volume regulator 210 and whether to open the second air volume regulator 220. Those skilled in the art may perform specific arrangements as needed, and detailed description thereof is omitted herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. An air supply system, comprising:
the air inlet end of the air inlet pipeline is positioned at the outer side of the equipment room, and the air outlet end of the air inlet pipeline is positioned at the inner side of the equipment room and communicated with the inner side of the equipment room;
the fresh air unit is arranged at the air inlet end of the air inlet pipeline; the fresh air unit is also provided with a salt fog filtering part, a dehumidifying part and a temperature regulating part;
the air quantity adjusting assembly comprises a first air quantity adjuster and a second air quantity adjuster, the first air quantity adjuster is used for adjusting the air quantity entering the equipment room from the air inlet pipeline, the second air quantity adjuster is used for adjusting the air quantity entering the fresh air unit, and the first air quantity adjuster is arranged at a position, close to the air outlet end, of the air inlet pipeline;
a sensor assembly including a first sensor for detecting a pressure difference between an inside of the equipment room and an outside of the equipment room, and a second sensor for detecting a pressure difference between both ends of the first air volume regulator; and
The first air volume regulator, the second air volume regulator, the first sensor and the second sensor are electrically connected with the controller; when the first sensor and the second sensor detect abnormal data, the abnormal data are fed back to the controller, and the controller respectively controls the first air quantity regulator and the second air quantity regulator to perform corresponding air quantity control, so that the air pressure in the equipment room is stable.
2. The air supply system of claim 1, wherein the fresh air handling unit further comprises a drive fan, and wherein the second air volume regulator further comprises a fan frequency converter electrically coupled to the controller and configured to control rotation of the drive fan.
3. The air supply system according to claim 1 or 2, wherein the controller is further provided with an operation panel; or the controller is also provided with a wireless transmitter.
4. A booster station comprising a plant room and an air supply system as claimed in any one of claims 1 to 3.
5. The booster station of claim 4 wherein said equipment room is provided with a plurality of said first sensor, said second sensor and said first air volume regulator are each provided with a plurality of said air outlet branches, said second sensor and said first air volume regulator are disposed in corresponding said air outlet branches, and one said equipment room corresponds to one said first sensor, one said second sensor and one said first air volume regulator.
6. A control method of an air supply system according to any one of claims 1 to 3, comprising the steps of:
(S1) a first sensor detecting a pressure difference between an interior of an equipment room and an exterior of the equipment room, and obtaining first pressure difference data;
(S2) comparing the first differential pressure data with first preset data, and if the first differential pressure data is larger than the first preset data, executing a step (S21); otherwise, executing the step (S22);
(S21) comprising the steps of:
(S211) the first sensor feeds back a first signal to a controller, and the controller controls the first air quantity regulator to reduce the air quantity entering the equipment room from an air inlet pipeline;
(S212) detecting the pressure difference between two ends of the first air quantity regulator by the second sensor, and obtaining second pressure difference data;
(S213) comparing the second differential pressure data with second preset data, and if the second differential pressure data is larger than the second preset data, feeding back a second signal to the controller by the second sensor, wherein the controller controls the second air quantity regulator to reduce the air quantity entering the fresh air unit; otherwise, go to the step (S212);
(S22), proceeding to the step (S1).
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| CN201810865797.XA CN109028440B (en) | 2018-08-01 | 2018-08-01 | Air supply system, booster station and control method of air supply system |
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| CN201810865797.XA CN109028440B (en) | 2018-08-01 | 2018-08-01 | Air supply system, booster station and control method of air supply system |
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| CN110440389A (en) * | 2019-08-15 | 2019-11-12 | 重庆众夏科技有限公司 | A kind of fire-fighting emergent evacuation overbottom pressure monitoring method and system |
| CN113748855A (en) * | 2021-04-25 | 2021-12-07 | 吉荣空调(揭阳)有限公司 | Grain storage system temperature control device, grain storage system and control method |
| CN115751819A (en) * | 2022-11-07 | 2023-03-07 | 珠海格力电器股份有限公司 | Pressure adjusting device, refrigeration house and refrigeration house pressure adjusting method |
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