CN203349669U - Energy saving device for evaporative condenser - Google Patents
Energy saving device for evaporative condenser Download PDFInfo
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- CN203349669U CN203349669U CN 201320303495 CN201320303495U CN203349669U CN 203349669 U CN203349669 U CN 203349669U CN 201320303495 CN201320303495 CN 201320303495 CN 201320303495 U CN201320303495 U CN 201320303495U CN 203349669 U CN203349669 U CN 203349669U
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- evaporative condenser
- flow blower
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Abstract
The utility model relates to an energy saving device for an evaporative condenser and belongs to the energy saving technical field of a condenser. The technical scheme of the energy saving device for the evaporative condenser is that a control panel cabinet is respectively connected with output signals of a gas temperature detecting unit (10), a water collecting basin water temperature detecting unit (13), a temperature detecting unit (11) for a cooled medium inlet and a temperature detecting unit (12) for a cooled medium outlet; a frequency controlling unit (15) of an axial flow fan and a frequency controlling unit of a circulating water pump are also connected with the control panel cabinet; output of the frequency controlling unit of the axial flow fan is connected with the axial flow fan; and the output of the frequency controlling unit of the circulating water pump is connected with the circulating water pump. The energy saving device for evaporative condenser optimizes an operation load of the axial flow fan of the evaporative condenser according to changes of cooling load of the evaporative condenser, so that a problem of uneven heat and cold of the upper and the lower parts is fully solved; operating efficiency and performance of equipments are improved; electricity consumption is reduced; the energy device is simply structured with strong practicality and feasibility; and small investment and low cost are needed with obvious energy saving effect.
Description
Technical field
The utility model relates to a kind of evaporative condenser energy saver, belongs to the condenser field of energy-saving technology.
Background technology
Evaporative condenser is comprised of parts such as set of heat exchange tubes, filler, water drenching device, axial flow blower, water leg, water circulating pump, water collection device and casings, take cooling water as cooling medium, because of its unique version and efficient heat exchange performance, cooling water forms the heat-exchanging water film outside heat exchanger tube, has self-cleaning function, be difficult for to stop up, condensation temperature is low, good cooling results, compact conformation, floor space is little, lightweight, connecting line is few, operating cost is low, the characteristics such as easy for installation; The fields such as condensation that are widely used in the cooling of gas or liquid medium, gas medium.In order to reach better cooling and energy-saving effect, people have developed again evaporative air-cooling formula heat exchanger, air cooler and evaporating cold are united two into one, as described in China Patent No. 200620130405.8.
Small-sized 1 axial flow blower of evaporative condenser separate unit configuration, large and medium-sized evaporative condenser single device need to configure 2 or 2 above axial flow blowers.The power consumption that its main energy consumption is axial flow blower and water circulating pump, wherein the power consumption of axial flow blower generally accounts for more than 80% of evaporative condenser power consumption.Its design feature of evaporative condenser is the cooler that catchments, cooling tower, water circulating pump, pond, waterpipe is integrated, adopt air inducing adverse current and heat exchange design, the moisture film that the transmission of heat relies on the heat exchanger tube surface of set of heat exchange tubes to form, air is to enter from evaporative condenser bottom surrounding, through the gap between the heat exchanger tube of cooling tube group, water evenly sprays on the top of set of heat exchange tubes, when heat exchange is carried out on moisture film and set of heat exchange tubes surface, moisture film and air are carrying out counter current contacting and heat exchange simultaneously, damp and hot saturated air after heat exchange is discharged from the axial flow blower outlet on evaporative condenser top, carrying out water after the heat exchange temperature reduction with air falls into water leg and recycles.Therefore the heat transfer efficiency of evaporative condenser and the air themperature of environment have direct relation.
In order to meet technological requirement, evaporative condenser must use the peak load of on-site high ambient temperature and heat exchange to be designed and produced according to equipment.But the environment temperature of most regional annual Various Seasonal differs greatly in the world, as North China's winter and summer environment temperature of China differs up to 50-60 ℃, the Northeast will be higher; The user also can not move for a long time when using evaporative condenser under the peak load operating mode.
The problem that the evaporative condenser of background technology mainly exists is that power consumption is higher; When environment temperature is lower or cooling load hour, power consumption can not descend thereupon, generally takes to stop or open less the way of axial flow blower; When evaporative condenser is set to 1 axial flow blower, although environment temperature is lower, generally stops axial flow blower and can not satisfy the demand, axial flow blower can only oepration at full load, can't regulate; For head it off, someone has developed the evaporative condenser energy-saving control cabinet, as described in China Patent No. 201220274255.3, utilize temperature sensor to detect in real time the temperature of the drain pipe pipeline of evaporative condenser, by gathering the temperature signal come, processed, the cooling fan that control puts into operation or the quantity of condensate pump, or the speed of service of controlling corresponding cooling fan or condensate pump realizes energy-conservation purpose.When a cooling fan of separate unit evaporative condenser configuration, can reach certain energy-saving effect; Along with the continuous maximization of evaporative condenser equipment, the quantity of the cooling fan of single device configuration also is on the increase, and when evaporative condenser is set to 2 or 2 above axial flow blowers, the background technology scheme can't realize energy-saving effect preferably.Main cause: the one, stop 1 or part axial flow blower, the operational efficiency of the axial flow blower of adjacent operation will significantly descend, it is former because in separate unit evaporative condenser upper body, the gas passage of each axial flow blower all is interconnected, when a certain axial flow blower quits work, air flows backwards and enters the axial flow blower import be in operation from the outlet of out-of-work axial flow blower, and operating axial flow blower operational efficiency is significantly descended; Separate unit evaporative condenser configuration many axial flow blowers more than 2 or 2 cause the lower or cooling load of environment temperature hour, although can't make the power consumption of axial flow blower obviously descend; The 2nd, when 2 of separate unit evaporative condenser configurations or 2 above axial flow blowers, the gas temperature height of every axial flow blower outlet is different, sometimes temperature just differs up to 10-20 ℃, come the position that in water leg, the temperature of water is different and differ also very large from the sprinkle of top, generally differ more than 5 ℃, this upper and lower temperature phenomenon uneven in temperature, reduced operational efficiency and the usefulness of equipment, cause energy consumption to increase, the background technology scheme can't solve.
The utility model content
The utility model purpose is to provide a kind of evaporative condenser energy saver, solve the upper and lower temperature of the evaporative condenser problem uneven in temperature of many axial flow blowers of configuration, and then realize the optimization operation of evaporative condenser improving operational efficiency and usefulness, reduce energy consumption.
The technical solution of the utility model is: a kind of evaporative condenser energy saver, comprise axial flow blower gas temperature detecting unit, the water-collecting tank water temperature detecting unit, the medium inlet temperature that is cooled detecting unit, the media outlet temperature detecting unit is cooled, axial flow blower, axial flow blower frequency control unit, water circulating pump, water circulating pump frequency control unit and control panel cabinet, the gas temperature detecting unit, the water-collecting tank water temperature detecting unit, the output signal of the medium inlet temperature that is cooled detecting unit and the media outlet temperature detecting unit that is cooled is connected with the control panel cabinet respectively, axial flow blower frequency control unit also is connected with the control panel cabinet with water circulating pump frequency control unit, the output of axial flow blower frequency control unit is connected with axial flow blower, the output of water circulating pump frequency control unit is connected with water circulating pump.
The temperature sensor of described axial flow blower gas temperature detecting unit, be arranged on the import or export of axial flow blower; The axial flow blower below is provided with water collection device and heat exchanger tube, the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on top or the bottom of water collection device, when heat exchanger tube is the air cooling heat exchange, be arranged on tube bank top or the bottom of heat exchanger tube, also can arrange in the tube bank upper and lower of heat exchanger tube, every axial flow blower at least arranges one simultaneously.
Bottom is provided with water leg, and the temperature sensor of water-collecting tank water temperature detecting unit is arranged on the liquid level 3/5-5/5 place of water leg, and the position of setting is corresponding with axial flow blower, and every axial flow blower is corresponding at least arranges a coolant-temperature gage test point.
The temperature sensor of media outlet temperature detecting unit of being cooled is arranged on the media outlet that is cooled, and the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on the medium import that is cooled.
The control panel cabinet has program control function, and there is the program module editted, program control function comprises that motor start and stop, setup measures, index show, index is just reported to the police and the function such as index adjusting, and the output signal of the output signal of each temperature detecting point, axial flow blower and water circulating pump running current and frequency control is connected with the control panel cabinet respectively; The index regulatory function of control panel cabinet can be manual adjustment, also can be automatic adjusting, also can be for artificial and automatic adjusting possesses simultaneously, and the establishment of said procedure module is general knowledge known in this field.
The index of control panel cabinet comprises each axial flow blower gas temperature, falls into tank each point coolant-temperature gage, institute is cooling or cooling medium out temperature, axial flow blower electric current, water circulating pump electric current etc.
Because the main energy consumption of evaporative condenser is axial flow blower, the energy consumption of water circulating pump accounts for to such an extent that ratio is less, and therefore regulation and control principle of the present utility model is: the regulating shaft flow fan of take is regulated water circulating pump as auxiliary as leading, take, and farthest reduces energy consumption.
Operation principle of the present utility model is: according to the technique needs, by cooling or condensed medium temperature be made as definite value or certain fluctuation range, this index is as the foundation of regulation and control; When being cooled or the temperature of cooling medium surpasses setting value, increase the flow of axial flow blower; Otherwise reduce the flow of axial flow blower.The configuration of separate unit evaporative condenser 2 or 2 above axial flow blowers, the gas temperature height of every Fans outlet is different, when needs increase the flow of axial flow blower, preferentially increases the axial flow blower flow that outlet temperature is higher; When needs reduce the flow of axial flow blower, preferentially reduce the axial flow blower flow that outlet temperature is lower; In the process of regulating shaft flow fan operating load, the operating load of water circulating pump is set as definite value, and is set as the higher operating load of 75-85%; When the operating load of many configured axial flow blowers all drops to 10-20%, simultaneously that whole axial flow blowers are out of service, on the contrary open simultaneously.After axial flow blower that the separate unit evaporative condenser configures is all stopped transport, be cooled or the temperature of cooling medium still surpasses setting value, regulate the operating load of water circulating pump, until reach the index set.
The utility model is applicable to all kinds of evaporative condensers, and also applicable air cooler and the evaporating cold evaporation type air cooling heat exchanger that unites two into one simultaneously is particularly useful for large-scale evaporative condenser and the large-scale evaporation type air cooling heat exchanger of many axial flow blowers of single device configuration.
Good effect of the present utility model is: according to the variation of evaporative condenser cooling load, take full advantage of the natural conditions of variation of ambient temperature simultaneously, optimize the operating load of evaporative condenser axial flow blower, the gas temperature of each axial flow blower discharge is Cha<=and 5 ℃, the coolant-temperature gage that falls into tank is Cha<=and 2 ℃, thoroughly solve upper and lower temperature phenomenon uneven in temperature, the operational efficiency of raising equipment and usefulness, reduce power consumption, realize energy-conservation purpose, simple, easy row, have very strong practicality and exploitativeness, small investment, cost are low, and energy-saving effect is outstanding.
The accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is the utility model embodiment schematic diagram;
In figure: shell 1, water leg 2, heat exchanger tube 3, water circulating pump 4, axial flow blower 5, air inlet 6, water collection device 7, the medium import 8 that is cooled, the media outlet 9 that is cooled, axial flow blower gas temperature detecting unit 10, the medium inlet temperature that is cooled detecting unit 11, the media outlet temperature detecting unit 12 that is cooled, water-collecting tank water temperature detecting unit 13, water circulating pump frequency control unit 14, axial flow blower frequency control unit 15, control panel cabinet 16.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further.
A kind of evaporative condenser energy saver, comprise axial flow blower gas temperature detecting unit 10, water-collecting tank water temperature detecting unit 13, the medium inlet temperature that is cooled detecting unit 11, media outlet temperature detecting unit 12 is cooled, axial flow blower 5, axial flow blower frequency control unit 15, water circulating pump 4, water circulating pump frequency control unit 14 and control panel cabinet 16, gas temperature detecting unit 10, water-collecting tank water temperature detecting unit 13, the output signal of the medium inlet temperature that is cooled detecting unit 11 and the media outlet temperature detecting unit 12 that is cooled is connected with the control panel cabinet respectively, axial flow blower frequency control unit 15 also is connected with the control panel cabinet with water circulating pump frequency control unit, the output of axial flow blower frequency control unit 15 is connected with axial flow blower, the output of water circulating pump frequency control unit is connected with water circulating pump.
The temperature sensor of described axial flow blower gas temperature detecting unit, be arranged on the import or export of axial flow blower; The axial flow blower below is provided with water collection device 7 and heat exchanger tube 3, the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on top or the bottom of water collection device, when heat exchanger tube is the air cooling heat exchange, be arranged on tube bank top or the bottom of heat exchanger tube, also can arrange in the tube bank upper and lower of heat exchanger tube, every axial flow blower at least arranges one simultaneously.
Bottom is provided with water leg 2, and the temperature sensor of water-collecting tank water temperature detecting unit is arranged on the liquid level 3/5-5/5 place of water leg, and the position of setting is corresponding with axial flow blower, and every axial flow blower is corresponding at least arranges a coolant-temperature gage test point.
The temperature sensor of media outlet temperature detecting unit of being cooled is arranged on the media outlet 9 that is cooled, and the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on the medium import 8 that is cooled.
In an embodiment: adopt the utility model to be applied to the solidifying gas steam turbine evaporative condenser of 12MW.
Device structure is 4 one group, and totally two groups, the design cooling load is 40000kw, 3 18.5KW axial flow blowers of separate unit evaporative condenser configuration, environment temperature: under zero in winter 10-15 ℃, summer 33-36 ℃, the average generation load 80-85% of steam turbine.
The main task of evaporative condenser: by the 0.012MPa(absolute pressure), the water vapour of 53-59 ℃ is condensed into condensed water, flow 48-50t/h.
Adopt the utility model front evaporator formula condenser axial flow blower operating load, winter 70-80%, summer 85-95%, average operating load 80-85%.Condensate temperature: winter 35-40 ℃, summer 45-50 ℃.
Adopt the utility model, set condensate temperature 48-50 ℃, using this as controlling index, adopt the way of manual adjustments, the axial flow blower operating load: winter 15-40%, summer 70-90%, average of the whole year 60-65%; Year days running calculated by 310 days, adopted the annual amount of electricity saving 60-65 of evaporative condenser ten thousand kwh after the utility model, power saving rate 15-20%; If the way power saving rate that employing is controlled automatically will be over 20%.
Claims (6)
1. an evaporative condenser energy saver, it is characterized in that: comprise axial flow blower gas temperature detecting unit (10), water-collecting tank water temperature detecting unit (13), the medium inlet temperature that is cooled detecting unit (11), media outlet temperature detecting unit (12) is cooled, axial flow blower (5), axial flow blower frequency control unit (15), water circulating pump (4), water circulating pump frequency control unit (14) and control panel cabinet (16), gas temperature detecting unit (10), water-collecting tank water temperature detecting unit (13), the medium inlet temperature that is cooled detecting unit (11) is connected with the control panel cabinet respectively with the output signal of the media outlet temperature detecting unit (12) that is cooled, axial flow blower frequency control unit (15) also is connected with the control panel cabinet with water circulating pump frequency control unit, the output of axial flow blower frequency control unit (15) is connected with axial flow blower, the output of water circulating pump frequency control unit is connected with water circulating pump.
2. a kind of evaporative condenser energy saver according to claim 1 is characterized in that: the temperature sensor of described axial flow blower gas temperature detecting unit is arranged on the import or export of axial flow blower.
3. a kind of evaporative condenser energy saver according to claim 1 and 2, it is characterized in that: the axial flow blower below is provided with water collection device (7) and heat exchanger tube (3), and the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on top or the bottom of water collection device.
4. a kind of evaporative condenser energy saver according to claim 3, it is characterized in that: heat exchanger tube is the air cooling heat exchange, the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on tube bank top or the bottom of heat exchanger tube.
5. a kind of evaporative condenser energy saver according to claim 1 and 2, it is characterized in that: bottom is provided with water leg (2), and the temperature sensor of water-collecting tank water temperature detecting unit is arranged on the liquid level 3/5-5/5 place of water leg.
6. a kind of evaporative condenser energy saver according to claim 1 and 2, it is characterized in that: the temperature sensor of the media outlet temperature detecting unit that is cooled is arranged on the media outlet that is cooled (9), and the temperature sensor of the medium inlet temperature that is cooled detecting unit is arranged on the medium import (8) that is cooled.
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CN 201320303495 CN203349669U (en) | 2013-05-30 | 2013-05-30 | Energy saving device for evaporative condenser |
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CN 201320303495 CN203349669U (en) | 2013-05-30 | 2013-05-30 | Energy saving device for evaporative condenser |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104214999A (en) * | 2014-09-10 | 2014-12-17 | 上海海洋大学 | Novel evaporative condenser |
CN107289811A (en) * | 2017-08-22 | 2017-10-24 | 洛阳隆华传热节能股份有限公司 | The energy-saving automatic control system and method for a kind of vaporation-type cooling/condensing plant |
-
2013
- 2013-05-30 CN CN 201320303495 patent/CN203349669U/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104214999A (en) * | 2014-09-10 | 2014-12-17 | 上海海洋大学 | Novel evaporative condenser |
CN107289811A (en) * | 2017-08-22 | 2017-10-24 | 洛阳隆华传热节能股份有限公司 | The energy-saving automatic control system and method for a kind of vaporation-type cooling/condensing plant |
CN107289811B (en) * | 2017-08-22 | 2023-03-24 | 隆华科技集团(洛阳)股份有限公司 | Energy-saving automatic control system and method for evaporative cooling/condensing equipment |
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