CN105179180A - High-power offshore wind generating set tower bottom cooling system and control method - Google Patents
High-power offshore wind generating set tower bottom cooling system and control method Download PDFInfo
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- CN105179180A CN105179180A CN201510513120.6A CN201510513120A CN105179180A CN 105179180 A CN105179180 A CN 105179180A CN 201510513120 A CN201510513120 A CN 201510513120A CN 105179180 A CN105179180 A CN 105179180A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a high-power offshore wind generating set tower bottom cooling system and a control method. The cooling system comprises a water cooling circulation system and an air cooling circulation system. A heat exchanger of the water cooling circulation system is located outside a tower. The other parts of the water cooling circulation system are all sealed inside the tower. The interior of the tower is divided into three layers from top to bottom through two platform partition plates. Two water cooling energy consumption assemblies are located on the bottom layer and the highest layer respectively. Two air cooling power consumption devices are located on the platform partition plate of the middle layer. Fans below two heat exchangers inside the tower drive air inside the tower to form a circulating wind path between venting pipes and the two air cooling power consumption devices. Cool-heat exchange is conducted between cooling liquid in the heat exchangers inside the tower and the heat exchanger outside the tower, and intra-tower wind path circulation and water path circulation are coupled through the heat exchangers inside the tower. By the adoption of the integrated closed type circulation cooling system, devices inside the tower are prevented from being corroded in a salt-spray environment, a plurality of liquid cooling assemblies at the bottom of the tower are cooled simultaneously, and the air at the bottom of the tower is cooled through the heat exchangers inside the tower in cooperation with the intra-tower air circulation. The cooling system is suitable for simultaneous energy saving in the special offshore environment.
Description
Technical field
The present invention relates to a kind of cooling system, particularly the high-power tower bottom of marine wind generating set cooling system of one.
Background technique
Along with land wind-resources exploitation hastens towards saturation day, offshore wind farm becomes the emphasis of various countries' wind-resources exploitation just gradually.Compared with land wind-powered electricity generation, offshore wind farm has the advantages such as wind-resources is stablized, do not taken up an area, grid-connected conditions is good, also faces the challenges such as cost is high, Maintenance Difficulty, harsh environmental conditions simultaneously.
For reducing offshore wind farm per kilowatt cost of investment, promote the consistent technology path that single-machine capacity has become each strong wind machine MANUFACTURER, the batch process offshore wind turbine main force of current China type single-machine capacity concentrates on about 3 ~ 4MW, promoting single-machine capacity can make each subassembly capacity increase, heating value increases, and increases complete machine heat radiation difficulty.Need cooling-part more at the bottom of offshore wind generating tower, for some high performance components, for ensureing cooling effectiveness, general employing liquid cooling mode; The parts that some heating values are less, directly adopt Air flow, reduce costs, and for multi-part heat radiation, not only cost is high for traditional distributing type of cooling, and fault point is many, and this drawback at sea type is particularly outstanding.For reducing tower outer platform construction cost, during the type design at sea of part producer, main transformer is placed in tower cylinder inner, and Seal Design is carried out to tower cylinder corrodes from marine salt mist environment to protect tower internals.Under high humidity environment, condensation causes electronic component short circuit to be a kind of common failure mode, and for this problem, conventional method regulates tower environment humidity for installing dehumidifier, but this mode additionally can increase cost.In addition, offshore wind turbine maintenance difficulties is large, and the frequency is unsuitable too high, therefore requires that system possesses higher reliability.
In sum, design a set of integrated cooling system, dispel the heat to liquid cooling all in tower, air cooling section, thermal environment at the bottom of air temperature, humidity and whole tower in fine adjustment tower, has important practical significance simultaneously.
Summary of the invention
The present invention be directed to that the cooling capacity that high-power offshore wind generating cooling system faces is large, reliability requirement is high, fall this requires high and corrosion-resistant problem, propose a kind of high-power tower bottom of marine wind generating set cooling system and controlling method, integrated closed circuit cooling system, carries out entirety to thermal environment at the bottom of whole tower and controls.
Technological scheme of the present invention is: a kind of high-power tower bottom of marine wind generating set cooling system, comprise water-cooling circulating system and the air-cooled circulatory system, the heat exchanger of water-cooling circulating system is outside tower, other parts are all enclosed in tower by tower cylinder and top layer dividing plate, three layers are divided into from top to bottom by tower with two-layer platform dividing plate, two water-cooled power consumption components in water-cooling circulating system lay respectively on bottom and top dividing plate, two tower inside heat exchanger are embedded in two ventilation duct bottoms of tower cylinder both sides, tower inside heat exchanger height is with the platform dividing plate of middle one deck, two ventilation ducts run through mesosphere and the highest two-layer platform dividing plate, two air-cooled power consuming devices are positioned on the platform dividing plate of mesosphere, and be positioned in the middle of two ventilation ducts, a fan is respectively with in two tower inside heat exchanger bottoms, in tower, air is by two fans drive, two ventilation inner air tubes are by flowing out in two tower inside heat exchanger, air-cooled power consuming devices is blowed to by the vent hole on the platform dividing plate of mesosphere, then third layer platform is flowed into by the vent hole on the highest platform dividing plate, finally suck back within two ventilation ducts by negative pressure, form complete circulation wind path, cooling liquid in two tower inside heat exchanger and tower outer heat-exchanger carry out cold and hot exchange, in tower, wind path circulation is coupled by tower inside heat exchanger with waterway circulating.
Described water-cooling circulating system comprises two recycle pumps in parallel, filter, Decompression valves, two tower inside heat exchanger, two water-cooled power consuming devices, three-way valve, tower outer heat-exchanger, expansion drum and pipeline, pump intake pipeline connects expansion drum, impurity in pump discharge pipeline serial connection metre filter cooling liquid; Pump discharge pipeline is connected with Decompression valves, cooling liquid self-pumping is divided into two-way after flowing out, two tower inside heat exchanger are entered respectively by pipeline, after air carries out heat exchange in two heat exchangers and tower, connect two water-cooled power consuming devices respectively, pipeline of leading up to after two water-cooled power consuming devices outputs converge connects tower outer heat-exchanger, one tunnel connects three-way valve, three-way valve another two leads to, and one connects the outlet of tower outer heat-exchanger, and one connects pump entry.
Described two tower inside heat exchanger, one of them tower inside heat exchanger is coil winding formula heat exchanger, and another tower inside heat exchanger is transistor type heat exchanger, having heaters between transistor type heat exchanger and the water-cooled power consuming devices be connected.
Described two recycle pumps in parallel adopt double pump redundant configuration, backup each other, and after one of them pump lost efficacy, another pump was cut immediately, switches an when double pump is normal at regular intervals
Described water-cooling circulating system recycle pump is imported and exported respectively a pressure transducer, measures Water-cooling circulating pump inlet and outlet pressure; Recycle pump is imported and exported respectively a temperature transducer, measures Water-cooling circulating pump out temperature; Respectively there is a temperature transducer in the outlet port of two water-cooled power consuming devices, two water-cooled power consuming devices (1,2) outputs converge an installation temperature transducer on rear pipeline, a temperature transducer is installed in tower outer heat-exchanger outlet port, above two tower inside heat exchanger, a temperature transducer and a humidity transducer are installed, measure two air-cooled power consuming devices (23,24) surrounding atmosphere epidemic disaster respectively.
The controlling method of described high-power tower bottom of marine wind generating set cooling system, comprises Water-cooling circulating and controls and air-cooled loop control:
Water-cooling circulating controls:
1) when system records circulating-pump outlet temperature lower than setting value, heater, improves the coolant temperature entering water-cooled power consumption components, and three-way valve moves to full off state, tower Inner eycle simultaneously, is down to minimum by system radiating ability;
2) when system records pump discharge temperature higher than setting value, three-way valve moves to full-gear, and tower outer circulation is opened, and rise to maximum by system radiating ability, now heater is in closed condition;
3) according to the outlet temperature sensor of two water-cooled power consuming devices, and two water-cooled power consuming devices export the detection converging temperature transducer on rear pipeline, and the change according to heating value controls three-way valve aperture, regulating system heat dissipation potential;
Air-cooled loop control:
A: when air temperature in tower is higher than setting value, Systematical control fan is opened, and in tower, atmospheric heat enters water circulation by two tower inside heat exchanger;
B: when air temperature in tower is lower than setting value, Systematical control two fans are opened, open water SAPMAC method heater simultaneously, and three-way valve is adjusted to full off state, tower Inner eycle, in tower, air is absorbed heat from water circulation by two tower inside heat exchanger, to ensure that two air-cooled power consumption components are operated in normal temperature range;
C: when relative air humidity in tower is higher than setting, system is by reducing three-way valve aperture or heater (5) lifting outer circulation water temperature, then two fans are opened, by two tower inside heat exchanger, air in tower is heated, to reduce the relative moisture of air in tower, reduce condensation risk.
Beneficial effect of the present invention is: the high-power tower bottom of marine wind generating set cooling system of the present invention and controlling method, this system can cool liquid cooling parts multiple at the bottom of tower simultaneously, and coordinate air circulation device in tower to cool air at the bottom of tower by heat exchangers in towers in system, then air at the bottom of tower is utilized to dispel the heat to air cooling device, to realize the control to thermal environment at the bottom of whole tower; System by the coupling control realization of three-way valve, heater and cooling fan to aerial temperature and humidity accurate adjustment in tower, maintain electronic parts and components normal working temperature scope simultaneously, prevent condensation from occurring; Except tower outside radiator inlet and outlet pipe lines, at the bottom of whole tower, system and external environment are completely isolated, and in protection tower, device corrodes from salt mist environment; The middle main pump of constituent and the outer radiator of tower all adopt Redundancy Design, to promote whole system reliability.
Accompanying drawing explanation
Fig. 1 is closed cycle water cooling system fundamental diagram at the bottom of tower of the present invention;
Fig. 2 is tower Inner eycle wind path schematic diagram of the present invention;
Fig. 3 is three layers of platform cooling system layout chart at the bottom of present system tower.
Embodiment
High-power tower bottom of marine wind generating set cooling system, primarily of a set of Water-cooling circulating and the air-cooled circulation composition of a set of sealed mode, carries out integrated coupling between Water-cooling circulating with air-cooled circulation, carries out Comprehensive Control to thermal environment at the bottom of whole tower.
Be illustrated in figure 1 the Water-cooling circulating schematic diagram in cooling system at the bottom of tower, comprise main circulating pump 8,9, filter 7, Decompression valves 6, tower inside heat exchanger 3,4, heater 5, power consuming devices 1,2, three-way valve 11, tower outer heat-exchanger 12, expansion drum 10 and pipeline, wherein Decompression valves 6, filter 7, two main circulating pumps 8,9 in parallel and expansion drum 10 are integrated within pumping plant, it is outside that heat exchanger 12 is positioned at tower cylinder, is attached thereto by the pipeline 20,22 running through tower cylinder, and it is inner that all the other elements are all installed on tower cylinder.Main circulating pump 8,9 is water-cooled pump, circulation power is provided to whole system, pump is very crucial and easily lost efficacy in whole constituent, design adopts double pump redundant configuration, backup each other, after one of them pump lost efficacy, another pump was cut immediately, switch at regular intervals once when double pump is normal, basically identical to ensure two pump life-spans; Pump intake pipeline connects expansion drum 10, pressure compensation or buffering are carried out to system; Pump discharge pipeline serial connection filter 7 filters impurity in cooling liquid; Pump discharge pipeline is connected with Decompression valves 6, shields to system, when system pressure exceedes setting value, earth pressure release is carried out in 6 unlatchings.Cooling liquid is divided into two-way after pumping plant flows out, and pipeline 13 of leading up to enters tower inside heat exchanger 3, and pipeline 14 of leading up to enters tower inside heat exchanger 4, carries out heat exchange by air in heat exchanger 3,4 and tower, in heat exchanger 3, cooling liquid enters water-cooled power consumption components 1 by pipeline 15, from pipeline 17 flows out after carrying out heat exchange with water-cooled power consumption components 1, in heat exchanger 4, first cooling liquid enters heater 5 by pipeline 16, then water-cooled power consumption components 2 is entered, flow out from pipeline 18 after carrying out heat exchange with water-cooled power consumption components 2, because water-cooled power consumption components 2 pairs of low temperature are very responsive, when the coolant temperature flowed into is lower, (in water-cooled power consumption components 1, main heater is coil winding to need heater 5 pairs of cooling liquids to heat up, in water-cooled power consumption components 2, main heater is transistor, therefore water-cooled power consumption components 2 pairs of low temperature are very responsive, require that entrance coolant temperature must higher than 0 DEG C, so when Water-cooling circulating coolant temperature is lower, heater 5 pairs of water-cooled power consumption components 2 branch road cooling liquids are needed to heat up), in pipeline 17,18, cooling liquid interflow enters pipeline 19, pipeline 19 is divided into two-way pipeline 20,21 after flowing out, pipeline 21 is directly connected with three-way valve 11, under three-way valve 11 is in full-gear, pipeline 22 is communicated with three-way valve, and pipeline 21 cuts off with the connection of three-way valve, cooling liquid flows to tower outer heat-exchanger 12 by pipeline 20, after tower outer heat-exchanger 12 flows out, import three-way valve 11 through pipeline 22, finally flow back to pumping plant by three-way valve 11, form circulation, when three-way valve 11 is in full off state, pipeline 21 is communicated with three-way valve, and pipeline 22 cuts off with the connection of three-way valve, and cooling liquid directly flows to three-way valve by pipeline 21, finally flows back to pumping plant.Tower outer heat-exchanger 12, pipeline 20,22 is called outer bypass, and wherein tower outer heat-exchanger 12 is positioned at tower cylinder outside, and pipeline 20,22 runs through tower cylinder, and system thermal is taken out of outside tower by outer bypass, then transfers heat to external environment by tower outer heat-exchanger 12; Outer bypass coolant rate is regulated by three-way valve 11 and realizes, three-way valve standard-sized sheet, and cooling liquid all flows into outer bypass, and now system radiating ability is the strongest, and three-way valve complete shut-down, flowing into outer bypass coolant rate is 0, and system radiating ability is the most weak.
Be illustrated in figure 2 the tower Inner eycle ventilation diagram in cooling system at the bottom of tower, primarily of tower inside heat exchanger 3,4, ventilation duct 32,27, fan 31,33, power consuming devices 23,24 is formed, heat exchanger 3,4 lays respectively at bottom ventilation duct 32,27, wherein power consuming devices 23,24 is Wind-cooling type, power consuming devices 23,24 is positioned in the middle of two ventilation ducts 32,27, air carries out heat exchange directly and in tower, fan 31,33 is arranged on below tower inside heat exchanger 3,4 respectively, and it is inner that all devices are all enclosed within tower cylinder, avoids being subject to extraneous marine salt mist environment and corrodes.Tower inner air drives through tower inner bottom part fan 31,33, and flow out by tower inside heat exchanger 3,4, then dispersion train carries out heat exchange through air-cooled power consumption components 23,24 surface, is sucked into airduct inside finally by airduct 27,32 negative pressuren zone, top, forms circulation.Because tower inner bottom part spatial altitude is larger, arrange that ventilation duct 27,32 can prevent air to be short-circuited in tower inner cyclic process, whole tower internal air-cooling system circulates up and down, and water-cooled circulates in pipeline as shown in Figure 1, 2, whole tower internal air-cooling system carries out thermal coupling by heat exchanger 3,4 and constituent.
As shown in Figure 1, Water-cooling circulating pumping plant outlet configuration pressure transducer P, measures water-cooled pump discharge pressure; Configure 6 temperature transducers, 2 are positioned at pumping plant and import and export, measure Water-cooling circulating pump out temperature, 2 are positioned on pipeline 17,18, measure the outlet water temperature in power consumption portion 1,2 respectively, one is installed on pipeline 19, measures the rear water temperature of 17,18 mixing, one is installed on pipeline 22, measures tower outer heat-exchanger outlet temperature.As shown in Figure 2, air-cooled loop configuration temperature transducer and a humidity transducer, measure cooled device 23,24 surrounding atmosphere epidemic disaster respectively.
Water-cooling circulating controls mainly to comprise following content: 1) when system records pump discharge temperature lower than setting value, heater 5 is to ensure the coolant temperature entering water-cooled power consumption components 2, three-way valve 11 moves to full off state, tower Inner eycle simultaneously, is down to minimum by system radiating ability; 2) when system records pump discharge temperature higher than setting value, three-way valve moves to full-gear, and rise to maximum by system radiating ability, now heater is in closed condition; 3) because wind power generating set power changes with extraneous wind speed change, and water-cooled power consumption components 1,2 heating value is determined by the power of the assembling unit, so the heating value moment change of water-cooled power consumption components 1,2, for ensureing that constituent coolant temperature maintains in the reasonable scope, according to the outlet temperature sensor of two water-cooled power consuming devices 1,2, and two water-cooled power consuming devices 1,2 export the detection converging temperature transducer on rear pipeline, need to control three-way valve 11 aperture, regulating system heat dissipation potential according to the change of heating value.
Air-cooled loop control mainly comprises following content: 1) when in tower during too high temperature of air, and Systematical control fan 31,33 is opened, and in tower, atmospheric heat enters water circulation by tower inside heat exchanger 3,4; 2) when in tower during too low air temperature, Systematical control fan 31,33 is opened, open water SAPMAC method heater simultaneously, and three-way valve is adjusted to full off state, in tower, air is absorbed heat, to ensure that air-cooled power consumption components 23,24 is operated in normal temperature range from water circulation by tower inside heat exchanger 3,4; 3) in addition, when relative air humidity in tower is higher than setting, system is by reducing three-way valve aperture or heater lifting outer circulation water temperature, then fan 31,33 is opened, heated by air in tower inside heat exchanger 3,4 pairs of towers, to reduce the relative moisture of air in tower, reduce condensation risk.
Be illustrated in figure 3 a kind of tower bottom of marine wind generating set cooling system layout chart.In heating component 1,2,23,24, water-cooled power consumption components 1,2 volume, compared with large and heating value is many, be to reduce heat density, optimize spatial structure, adopt three layers of platform layout mode at the bottom of whole tower.Water-cooled power consumption components 1 is positioned on underlying platform 25, and air-cooled power consuming devices 23,24 is positioned on second layer platform 30, and water-cooled power consumption components 2 is positioned on third layer platform 29, and it is relatively uniform that such layout makes the heat at the bottom of whole tower distribute, and avoids local excess temperature.Pumping plant is installed on second layer platform, and water-cooled liquid 13,14 flows into tower inside heat exchanger by the road respectively after pumping plant flows out, and tower inside heat exchanger 3,4 is embedded in ventilation duct 27 and 32 bottom, and two ventilation ducts 32,27 run through second and third layer of platform; After water-cooled liquid flows out tower inside heat exchanger 3,4,15,16 enter and be positioned at the water-cooled power consumption components 1 of one deck platform and the water-cooled power consumption components 2 of three layers of platform by the road respectively, flowed out by pipeline 17,18 after carrying out heat exchange with water-cooled power consumption components 1,2,17, the cooling liquid in 18 is divided into two branch roads after confluxing, pipeline 20 of leading up to flows to the outer radiator 12 of tower, then 22 flow out to three-way valve 11 by the road, be finally back to pumping plant; Another road directly flows to three-way valve 11, finally flows into pumping plant, forms circulation, and two bypass flow distribution are determined by three-way valve aperture, and when three-way valve 11 standard-sized sheet, cooling liquid all flows into 11 by pipeline 21; When three-way valve 11 complete shut-down, cooling liquid all flows into 11 by 20,12,22.In tower, wind path circulation is coupled by tower inside heat exchanger 3,4 with waterway circulating, in tower, first air enters first layer platform interior after being driven by fan 31,33, air-cooled power consuming devices 23,24 is blowed to by the vent hole on second layer platform dividing plate, then third layer platform is flowed into by the vent hole on third layer platform dividing plate, finally be sucked within ventilation duct 27,32 by negative pressure, form complete circulation wind path.System at the bottom of whole tower is isolated with extraneous and tower cylinder upper part by tower cylinder 26, top layer dividing plate 28, prevents outside high humility, deep-etching air enters; System thermal is passed to ambient air by the water-cooled outer circulation of 20,12,22 compositions.
Claims (6)
1. a high-power tower bottom of marine wind generating set cooling system, it is characterized in that, comprise water-cooling circulating system and the air-cooled circulatory system, the heat exchanger (12) of water-cooling circulating system is outside tower, other parts all pass through tower cylinder (26) and top layer dividing plate (28) is enclosed in tower, three layers are divided into from top to bottom by tower with two-layer platform dividing plate, two water-cooled power consumption components in water-cooling circulating system lay respectively on bottom (25) and top dividing plate (29), tower inside heat exchanger (3, 4) two ventilation ducts (27 of tower cylinder (26) both sides are embedded in, 32) bottom, tower inside heat exchanger (3, 4) highly with the platform dividing plate (30) of middle one deck, two ventilation ducts (27, 32) mesosphere and the highest two-layer platform dividing plate is run through, two air-cooled power consuming devices (23, 24) be positioned on mesosphere platform dividing plate (30), and be positioned at two ventilation ducts (27, 32) in the middle of, tower inside heat exchanger (3, 4) fan (31 is respectively with in bottom, 33), in tower, air is by two fans (31, 33) drive, two ventilation ducts (27, 32) interior air is by two tower inside heat exchanger (3, 4) flow out in, two air-cooled power consuming devices (23 are blowed to by the vent hole on the platform dividing plate of mesosphere, 24), then third layer platform is flowed into by the vent hole on the highest platform dividing plate, finally suck back two ventilation ducts (27 by negative pressure, 32) within, form complete circulation wind path, two tower inside heat exchanger (3, 4) cooling liquid in and tower outer heat-exchanger (12) carry out cold and hot exchange, in tower, wind path circulation and waterway circulating are by two tower inside heat exchanger (3, 4) be coupled.
2. high-power tower bottom of marine wind generating set cooling system according to claim 1, it is characterized in that, described water-cooling circulating system comprises two recycle pumps in parallel (8,9), filter (7), Decompression valves (6), two tower inside heat exchanger (3,4), two water-cooled power consuming devices (1,2), three-way valve (11), tower outer heat-exchanger (12), expansion drum (10) and pipeline, pump intake pipeline connects expansion drum (10), and pump discharge pipeline serial connection filter (7) filters impurity in cooling liquid; Pump discharge pipeline is connected with Decompression valves (6), cooling liquid self-pumping is divided into two-way after flowing out, two tower inside heat exchanger (3,4) are entered respectively by pipeline, after carrying out heat exchange by two heat exchangers (3,4) and air in tower, connect two water-cooled power consuming devices (1,2) respectively, pipeline of leading up to after two water-cooled power consuming devices (1,2) outputs converge connects tower outer heat-exchanger (12), one tunnel connects three-way valve (11), three-way valve (11) another two leads to, one connects tower outer heat-exchanger (12) outlet, and one connects recycle pump (8,9) entrance.
3. high-power tower bottom of marine wind generating set cooling system according to claim 2, it is characterized in that, described two tower inside heat exchanger (3,4), one of them tower inside heat exchanger (3) is coil winding formula heat exchanger, another tower inside heat exchanger (4) is transistor type heat exchanger, having heaters (5) between transistor type heat exchanger (4) and the water-cooled power consuming devices (2) be connected.
4. high-power tower bottom of marine wind generating set cooling system according to claim 2, it is characterized in that, described two recycle pumps (8,9) in parallel adopt double pump redundant configuration, backup each other, after one of them pump lost efficacy, another pump is cut immediately, switches at regular intervals once when double pump is normal.
5. high-power tower bottom of marine wind generating set cooling system according to Claims 2 or 3, is characterized in that, described water-cooling circulating system recycle pump is imported and exported respectively a pressure transducer, measures Water-cooling circulating pump inlet and outlet pressure; Recycle pump is imported and exported respectively a temperature transducer, measures Water-cooling circulating pump out temperature; Respectively there is a temperature transducer in the outlet port of two water-cooled power consuming devices (1,2), two water-cooled power consuming devices (1,2) outputs converge an installation temperature transducer on rear pipeline, a temperature transducer is installed in tower outer heat-exchanger (12) outlet port, a temperature transducer and a humidity transducer are installed in tower inside heat exchanger (3,4) top, measure two air-cooled power consuming devices (23,24) surrounding atmosphere epidemic disaster respectively.
6. the controlling method of high-power tower bottom of marine wind generating set cooling system according to claim 5, is characterized in that, comprises Water-cooling circulating and controls and air-cooled loop control:
Water-cooling circulating controls:
1) when system records recycle pump (8,9) outlet temperature lower than setting value, heater (5), improves the coolant temperature entering water-cooled power consumption components (2), and three-way valve (11) moves to full off state simultaneously, tower Inner eycle, is down to minimum by system radiating ability;
2) when system records pump discharge temperature higher than setting value, three-way valve (11) moves to full-gear, and tower outer circulation is opened, and rise to maximum by system radiating ability, now heater (5) is in closed condition;
3) according to the outlet temperature sensor of two water-cooled power consuming devices (1,2), and the output of two water-cooled power consuming devices (1,2) converges the detection of temperature transducer on rear pipeline, change according to heating value controls three-way valve (11) aperture, regulating system heat dissipation potential;
Air-cooled loop control:
A: when air temperature in tower is higher than setting value, Systematical control two fans (31,33) are opened, and in tower, atmospheric heat enters water circulation by two tower inside heat exchanger (3,4);
B: when air temperature in tower is lower than setting value, Systematical control two fans (31,33) are opened, open water SAPMAC method heater (5) simultaneously, and three-way valve (11) is adjusted to full off state, tower Inner eycle, in tower, air is absorbed heat, to ensure that air-cooled power consumption components (23,24) is operated in normal temperature range from water circulation by two tower inside heat exchanger (3,4);
C: when relative air humidity in tower is higher than setting, system is by reducing three-way valve (11) aperture or heater (5) lifting outer circulation water temperature, then fan (31,33) is opened, by two tower inside heat exchanger (3,4), air in tower is heated, to reduce the relative moisture of air in tower, reduce condensation risk.
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| CN113513456A (en) * | 2021-07-19 | 2021-10-19 | 中国绿发投资集团有限公司 | Salt fog prevention method and system for equipment in tower barrel of offshore wind driven generator |
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| CN113513456A (en) * | 2021-07-19 | 2021-10-19 | 中国绿发投资集团有限公司 | Salt fog prevention method and system for equipment in tower barrel of offshore wind driven generator |
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Effective date of registration: 20180913 Address after: 224300 Jiangsu Yancheng City Sheyang County Lingang Industrial Zone East of Jinhai Avenue, Wei two road north side. Patentee after: Sheyang far view Energy Technology Co., Ltd. Address before: 200051 Zhongshan West Road, Changning District, Shanghai, 1065 SOHO, 8 floor, block B, Zhongshan Plaza. Patentee before: Envision Energy (Jiangsu) Co., Ltd. |