CN205025515U - Condensing steam turbine system based on heat pump - Google Patents
Condensing steam turbine system based on heat pump Download PDFInfo
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Abstract
本实用新型提供了一种基于热泵的凝汽式汽轮机系统,包括:凝结水装置、抽气设备、轴封加热器、低压加热器;凝结水装置通过管线依序与轴封加热装器、低压加热器连接,抽气设备通过管线与凝结水装置连接;还包括热泵系统,热泵系统包括依序循环连接的压缩机、冷凝器、节流装置、蒸发器;抽气设备通过管线与蒸发器连接,冷凝器通过管线与轴封加热器并联;抽气装置中的水通过蒸发器后冷却并循环,凝结水装置中的水经过冷凝器加热后通入低压加热器。本实用新型降低了射水抽气器的工作温度,使射水抽气器处于较高效率区间,抽吸不凝气体的能力保持设计水平,从而提高机组的真空度,降低机组发电煤耗,提高机组的经济性。
The utility model provides a condensing steam turbine system based on a heat pump, comprising: a condensing water device, an air extraction device, a shaft seal heater, and a low-pressure heater; The heater is connected, and the air extraction equipment is connected to the condensate device through pipelines; it also includes a heat pump system, which includes a compressor, condenser, throttling device, and evaporator connected in sequence; the air extraction equipment is connected to the evaporator through pipelines , the condenser is connected in parallel with the shaft seal heater through the pipeline; the water in the air extraction device is cooled and circulated after passing through the evaporator, and the water in the condensation water device is heated by the condenser and then passed into the low-pressure heater. The utility model reduces the working temperature of the water jet air extractor, makes the water jet air extractor in a higher efficiency range, and maintains the design level of the ability to suck non-condensable gas, thereby improving the vacuum degree of the unit, reducing the coal consumption of the unit for power generation, and improving the unit's efficiency. economy.
Description
技术领域technical field
本实用新型涉及一种基于热泵的凝汽式汽轮机系统,属于热力发电技术领域。The utility model relates to a condensing steam turbine system based on a heat pump, which belongs to the technical field of thermal power generation.
背景技术Background technique
目前,大多数凝汽式发电机组都采用回热循环方式,减少冷源损失,提高发电机组经济性。即抽出部分已经做过一部分功的蒸汽通过加热器提高凝结水温度,这样可以减少锅炉的耗煤量,提高整个系统的经济性。At present, most condensing generator sets adopt the heat recovery cycle method to reduce the loss of cold source and improve the economy of the generator set. That is, the part of the steam that has done a part of the work is extracted to increase the temperature of the condensed water through the heater, which can reduce the coal consumption of the boiler and improve the economy of the entire system.
采用回热循环凝汽式发电机组的工作原理如图1所示,主要包括锅炉1、汽轮机2、发电机3、凝汽器4、轴封加热器81、低压加热器81、给水泵91、高压加热器9、抽气装置6和射水泵61等。给水在锅炉中1吸热产生高温高压蒸汽进汽轮机2中膨胀做功,冲动汽轮机2的转子旋转,转子带动发电机3的转子在磁场中切割磁力线发电。做完功的蒸汽(乏汽)由排汽缸进入凝汽器4,在凝汽器4中进行热交换,乏汽凝结成凝结水,热量由循环水通过冷却塔5释放到大气中,凝结水汇集到热井,通过凝结水泵41升压进入凝结水系统,凝结水分别进入轴封加热器81、低压加热器82、除氧器7和高压加热器9,通过上述的换热设备利用机组抽汽逐步加热,除氧后进入锅炉加热后产生高温高压蒸汽,如此反复循环。将做过部分功的蒸汽由汽轮机2固定抽汽口采用抽气设备6抽出用于加热凝结水,实现回热循环。The working principle of the condensing steam generator set using the heat recovery cycle is shown in Figure 1, which mainly includes a boiler 1, a steam turbine 2, a generator 3, a condenser 4, a shaft seal heater 81, a low pressure heater 81, a feed water pump 91, High pressure heater 9, air extraction device 6 and jet pump 61 etc. The feed water absorbs heat in the boiler 1 to produce high-temperature and high-pressure steam, which expands into the steam turbine 2 to perform work, and the rotor of the impulsive steam turbine 2 rotates, and the rotor drives the rotor of the generator 3 to cut the magnetic field lines in the magnetic field to generate electricity. The steam (exhaust steam) that has done work enters the condenser 4 from the exhaust cylinder, and performs heat exchange in the condenser 4. The exhaust steam is condensed into condensed water, and the heat is released into the atmosphere by the circulating water through the cooling tower 5, and the condensed water Collected into the hot well, the condensed water pump 41 boosts the pressure and enters the condensed water system, and the condensed water enters the shaft seal heater 81, low-pressure heater 82, deaerator 7 and high-pressure heater 9 respectively, and is pumped by the unit through the above-mentioned heat exchange equipment The steam is gradually heated, and after deoxygenation, it enters the boiler to be heated to generate high-temperature and high-pressure steam, and the cycle is repeated. The steam that has done part of the work is extracted from the fixed steam extraction port of the steam turbine 2 using the air extraction device 6 to heat the condensed water to realize the heat recovery cycle.
当前凝汽式发电机组采用的抽气设备6主要由射水箱63、射水泵61和射水抽气器62构成。射水箱63中的水经射水泵61升压后供给射水抽气器62,抽出汽-气混合物后再排至射水箱63,如此循环使用。真空泵与射水抽气器原理基本相同,主要区别是用水封环代替抽气器。为了简单起见,下面以射水抽气器为例进行分析。The air extraction equipment 6 adopted by the current condensing steam generator set is mainly composed of a water jet box 63 , a water jet pump 61 and a water jet air extractor 62 . The water in the jet tank 63 is boosted by the jet pump 61 and supplied to the jet pump 62, and the steam-gas mixture is extracted and then discharged to the jet tank 63 for recycling. The principle of the vacuum pump is basically the same as that of the water jet aspirator, the main difference is that the water seal ring replaces the aspirator. For the sake of simplicity, the following takes the water jet aspirator as an example for analysis.
夏季,随着环境温度升高,循环水温进出水温度也相应提高,机组真空逐步降低,机组经济性快速下降,甚至出现达不到机组设计出力的情况。分析原因主要是由于循环水进水温度上升,机组排汽温度也随之提高,对应的饱和压力升高,机组可利用焓降减少,要达到额定发电量就需要更多蒸汽,当进汽量大于设计进汽量时就必须限制机组负荷量,导致达不到设计出力。In summer, as the ambient temperature rises, the temperature of the circulating water and the temperature of the inlet and outlet water also increase accordingly, the vacuum of the unit gradually decreases, the economy of the unit drops rapidly, and even the design output of the unit may not be reached. The analysis reason is mainly due to the increase of the circulating water inlet temperature and the increase of the exhaust steam temperature of the unit. The corresponding saturation pressure increases and the available enthalpy drop of the unit decreases. To achieve the rated power generation, more steam is needed. When the steam intake When the steam intake is greater than the design, the unit load must be limited, resulting in failure to reach the design output.
射水抽气器62所能产生的极限真空受进水温度制约,当腔室的真空达到水温的饱和温度时水会汽化,射水抽气器62将不能正常工作。射水抽气器62抽出汽-气混合物中的蒸汽具有汽化潜热,随着环境温度的提高,射水箱中循环水散热条件变差,循环水温逐步升高。射水抽气器62的抽气效率随循环水温度的升高呈快速下降的趋势。循环水温度的升高,抽气器效率下降,抽出的不凝气体量减少,导致积聚在凝汽器换热面上的不凝气体增加,增大凝汽器热阻,降低换热系数,也会引起排汽温度上升,真空下降,机组经济性变差。The ultimate vacuum that the water jet air extractor 62 can produce is restricted by the temperature of the inlet water. When the vacuum in the chamber reaches the saturation temperature of the water temperature, the water will vaporize, and the water jet air extractor 62 will not work normally. The steam in the steam-gas mixture extracted by the water jet extractor 62 has latent heat of vaporization. As the ambient temperature increases, the heat dissipation condition of the circulating water in the jet tank becomes worse, and the temperature of the circulating water gradually increases. The air extraction efficiency of the water jet air extractor 62 tends to decrease rapidly as the temperature of the circulating water increases. As the temperature of the circulating water increases, the efficiency of the air extractor decreases, and the amount of non-condensable gas extracted decreases, resulting in an increase in the accumulation of non-condensable gas on the heat exchange surface of the condenser, increasing the thermal resistance of the condenser, and reducing the heat transfer coefficient. It will also cause the temperature of the exhaust steam to rise, the vacuum to drop, and the economical efficiency of the unit to deteriorate.
在电厂,夏季当射水箱63水温升高导致机组真空偏低时,通常主要采取以下两种办法,一种是向射水箱63中溢流串水,即降低抽气设备6循环水工作温度。补入工业水,通过溢流方式,排出部分“热水”,补入部分“冷水”来降低射水抽气器中温度;另一种是开启两台射水泵的方式,通过增大循环水量,增加不凝性气体抽出量。但实际效果都不理想。采用第一种方法,向射水箱63串水,通过溢流的方式降低水温时,增加新鲜水(工业水)的消耗,同时溢流出的水基本是常压,通常是进入无压回水管线到污水处理厂,也增大了污水处理量,增加了生产运行费用。第二种方法,多开了一台射水泵,增加了厂用电量,抽气量增大后带来的汽-气混合物中汽量增加,导致射水箱中水温升高,抽气设备效率下降。In power plants, when the water temperature of the water jet tank 63 rises in summer and the vacuum of the unit is low, the following two methods are usually adopted. One is to overflow the water jet tank 63, that is, to reduce the working temperature of the circulating water of the air extraction equipment 6. . Fill in industrial water, discharge part of "hot water" through overflow, and fill in part of "cold water" to reduce the temperature in the jet pump; the other is to turn on two jet pumps, by increasing the amount of circulating water, Increase the amount of non-condensable gas pumped. But the actual effect is not ideal. Adopt the first method, string water to the jet tank 63, and increase the consumption of fresh water (industrial water) when the water temperature is lowered by means of overflow. At the same time, the overflowed water is basically normal pressure, and usually enters the non-pressure return water pipeline To the sewage treatment plant, also increased the amount of sewage treatment, increased production and operation costs. The second method is to open one more water jet pump, which increases the power consumption of the factory, and the increase in the amount of steam in the steam-gas mixture after the increase in the pumping capacity increases the water temperature in the water jet tank, and the efficiency of the pumping equipment increases. decline.
实用新型内容Utility model content
针对现有技术的不足,本实用新型所要解决的技术问题在于如何降低将射水箱循环水温度。Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is how to reduce the temperature of the circulating water in the jetting tank.
为实现上述实用新型目的,本实用新型采用下述的技术方案:For realizing above-mentioned utility model purpose, the utility model adopts following technical scheme:
本实用新型提供一种基于热泵的凝汽式汽轮机系统,包括:The utility model provides a heat pump-based condensing steam turbine system, comprising:
凝结水装置、抽气设备、轴封加热器、低压加热器;Condensate water device, air extraction equipment, shaft seal heater, low pressure heater;
凝结水装置通过管线依序与所述轴封加热装器、所述低压加热器连接,所述抽气设备通过管线与所述凝结水装置连接;The condensed water device is sequentially connected to the shaft seal heater and the low-pressure heater through pipelines, and the air extraction equipment is connected to the condensed water device through pipelines;
还包括热泵系统,所述热泵系统包括依序循环连接的压缩机、冷凝器、节流装置、蒸发器;It also includes a heat pump system, which includes a compressor, a condenser, a throttling device, and an evaporator sequentially connected in a cycle;
所述抽气设备通过管线与所述蒸发器连接,所述冷凝器通过管线与所述轴封加热器并联;The air extraction device is connected to the evaporator through a pipeline, and the condenser is connected in parallel with the shaft seal heater through a pipeline;
所述抽气装置中的水通过所述蒸发器后冷却并循环,所述凝结水装置中的水经过所述冷凝器加热后通入所述低压加热器。The water in the air extraction device passes through the evaporator and then cools and circulates, and the water in the condensation water device passes through the low pressure heater after being heated by the condenser.
其中较优地,所述抽气设备包括射水抽气器、射水箱、射水泵;Wherein preferably, the air pumping equipment includes a water jet air extractor, a water jet tank, and a water jet pump;
所述射水箱的管线出口通过管线连接所述蒸发器的制冷入口,所述蒸发器的制冷出口通过管线连接所述射水泵的管线入口。The pipeline outlet of the jet tank is connected to the cooling inlet of the evaporator through a pipeline, and the cooling outlet of the evaporator is connected to the pipeline inlet of the jet pump through a pipeline.
所述射水箱的水经过所述蒸发器冷却后进入所述射水泵循环。The water in the jet tank is cooled by the evaporator and enters the jet pump for circulation.
其中较优地,所述节流装置是毛细管、热力膨胀阀、电子膨胀阀中的任意一种。Wherein preferably, the throttling device is any one of a capillary tube, a thermal expansion valve, and an electronic expansion valve.
与现有技术相比,本实用新型具有以下有益效果:Compared with the prior art, the utility model has the following beneficial effects:
本实用新型提供的基于热泵的凝汽式汽轮机系统,通过热泵蒸发器吸热,将射水箱循环水温度由较高温度降至设计温度附近后回到射水箱。由于降低了射水抽气器的工作温度,使射水抽气器处于较高效率区间,抽吸不凝气体的能力保持设计水平,从而提高机组的真空度,降低机组发电煤耗,提高机组的经济性。The condensing steam turbine system based on the heat pump provided by the utility model absorbs heat through the heat pump evaporator, lowers the temperature of the circulating water in the jet tank from a higher temperature to near the design temperature, and then returns to the jet tank. Because the working temperature of the water jet extractor is reduced, the water jet extractor is in a relatively high efficiency range, and the ability to pump non-condensable gas maintains the design level, thereby increasing the vacuum degree of the unit, reducing the coal consumption of the unit for power generation, and improving the economy of the unit .
附图说明Description of drawings
图1是现有技术中凝汽式汽轮机系统示意图;Fig. 1 is a schematic diagram of a condensing steam turbine system in the prior art;
图2是现有技术中热泵系统示意图;Fig. 2 is a schematic diagram of a heat pump system in the prior art;
图3是本实用新型基于热泵的凝汽式汽轮机系统示意图。Fig. 3 is a schematic diagram of the condensing steam turbine system based on the heat pump of the present invention.
具体实施方式detailed description
下面结合附图和实施例,对本实用新型的具体实施方式作进一步描述。以下实施例用于说明本实用新型,但不用来限制本实用新型的范围。Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is further described. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.
热泵(HeatPump)是一种将低温热源的热能转移到高温热源的装置。如图2所示,热泵系统一般主要由压缩机、冷凝器、节流阀和蒸发器组成。A heat pump is a device that transfers thermal energy from a low-temperature heat source to a high-temperature heat source. As shown in Figure 2, a heat pump system generally consists of a compressor, a condenser, a throttle valve and an evaporator.
如图3所示,本实用新型提供一种基于热泵的凝汽式汽轮机系统,其特征在于,包括:凝结水装置4、抽气设备6、轴封加热器81、低压加热器82;凝结水装置4通过管线依序与轴封加热装器81、低压加热器82连接,抽气设备6通过管线与凝结水装置4连接;还包括热泵系统,热泵系统包括依序循环连接的压缩机88、冷凝器85、节流装置86、蒸发器87;抽气设备6通过管线与蒸发器85连接,冷凝器87通过管线与轴封加热器81并联;抽气装置中6的水通过蒸发器85后冷却并循环,凝结水装置4中的水经过冷凝器87加热后通入低压加热器82。下面对本实用新型提供的基于热泵的凝汽式汽轮机系统展开详细的说明。As shown in Figure 3, the utility model provides a heat pump-based condensing steam turbine system, which is characterized in that it includes: a condensed water device 4, an air extraction device 6, a shaft seal heater 81, and a low-pressure heater 82; The device 4 is connected to the shaft seal heating device 81 and the low-pressure heater 82 in sequence through pipelines, and the air extraction equipment 6 is connected to the condensation water device 4 through pipelines; it also includes a heat pump system, which includes compressors 88, Condenser 85, throttling device 86, evaporator 87; air extraction equipment 6 is connected with evaporator 85 through pipeline, condenser 87 is connected in parallel with shaft seal heater 81 through pipeline; Cooling and circulation, the water in the condensation water device 4 passes through the low-pressure heater 82 after being heated by the condenser 87 . The heat pump-based condensing steam turbine system provided by the utility model will be described in detail below.
如图3所示,抽气设备6包括射水抽气器62、射水箱63、射水泵61;射水箱的63管线出口通过管线连接蒸发器85的制冷入口,蒸发器85的制冷出口通过管线连接射水泵61的管线入口。射水箱63的水经过蒸发器85冷却后进入射水泵61循环。具体地,从射水箱63中循环水抽出,进入蒸发器85,在蒸发器85中换热,降低温度后(20-25℃),再返回射水箱63底部射水泵61进水母管。通过射水泵61将循环水升压后进入射水抽气器62,在射水抽气器62的喷嘴中喷射射水抽气器62中不凝气体和部分蒸汽后通过扩压管排至射水箱63。从凝结水装置4出口母管引出一条凝结水管(42-48℃),进入冷凝器87,在冷凝器87中换热,升高温度(57-70℃)后,并入合适温度的轴封加热器81或低压加热器82水侧。在本实用新型中。节流装置86是毛细管、热力膨胀阀、电子膨胀阀中的任意一种。As shown in Figure 3, the air extraction device 6 includes a water jet extractor 62, a water jet tank 63, and a water jet pump 61; the 63 pipeline outlets of the water jet tank are connected to the cooling inlet of the evaporator 85 by a pipeline, and the cooling outlet of the evaporator 85 is connected by a pipeline The pipeline inlet of jet pump 61. The water in the jet tank 63 enters the jet pump 61 for circulation after being cooled by the evaporator 85 . Specifically, the circulating water is pumped out from the jet tank 63, enters the evaporator 85, exchanges heat in the evaporator 85, and after lowering the temperature (20-25° C.), returns to the jet pump 61 at the bottom of the jet tank 63 to feed the jellyfish pipe. The circulating water is pressurized by the jet pump 61 and then enters the jet pump 62. The non-condensable gas and part of the steam in the jet pump 62 are injected into the nozzle of the jet pump 62 and discharged to the jet tank 63 through the diffuser pipe. A condensed water pipe (42-48°C) is drawn from the outlet main pipe of the condensed water device 4, enters the condenser 87, and exchanges heat in the condenser 87. After raising the temperature (57-70°C), it is incorporated into a shaft seal with a suitable temperature Heater 81 or low pressure heater 82 water side. In the utility model. The throttling device 86 is any one of a capillary tube, a thermal expansion valve, and an electronic expansion valve.
本实用新型可利用电厂蒸汽充足的有利条件,通过综合利用热泵技术,同时利用热泵循环中的加热和制冷部分,达到提高凝汽式汽轮机组经济性的效果。当冬季射水箱水温降低的情况,可以通过系统切换回收凝汽器出口循环水热量加热凝结水。具体如下:The utility model can take advantage of the favorable condition of sufficient steam in the power plant, through the comprehensive utilization of the heat pump technology, and simultaneously utilize the heating and cooling parts in the heat pump cycle, so as to achieve the effect of improving the economical efficiency of the condensing steam turbine unit. When the water temperature of the water injection tank drops in winter, the heat of the circulating water at the outlet of the condenser can be recovered to heat the condensed water through system switching. details as follows:
1、可以降低进入射水抽气器(真空泵)中循环水温度,达到抽气装置进水设计温度,减少循环水温度升高对抽气设备效率的影响,使抽气设备处于高效状态;2、可以提高机组的真空,降低发电煤耗,提高机组的经济性;3、回收热量用于提高凝结水温度,减少相应低压加热器所需的蒸汽量;4、减少低压加热器的进汽量,使更多蒸汽用于发电,增大机组发电量;5、由于冷却循环水和加热凝结水的温度都不高,温差也不大,便于选取高换热系数热泵;6、可利用电厂蒸汽充足的有利条件,采用蒸汽型吸收制冷热泵,提高整个能源利用率。1. It can reduce the temperature of the circulating water entering the water jet extractor (vacuum pump) to reach the design temperature of the intake water of the pumping device, reduce the influence of the temperature rise of the circulating water on the efficiency of the pumping equipment, and make the pumping device in a high-efficiency state; 2. It can improve the vacuum of the unit, reduce the coal consumption of power generation, and improve the economy of the unit; 3. The recovered heat is used to increase the temperature of the condensed water and reduce the amount of steam required by the corresponding low-pressure heater; 4. Reduce the steam intake of the low-pressure heater, so that More steam is used for power generation, increasing the generating capacity of the unit; 5. Since the temperature of the cooling circulating water and the heating condensate water are not high, and the temperature difference is not large, it is convenient to select a heat pump with a high heat transfer coefficient; 6. A power plant with sufficient steam can be used Favorable conditions, the use of steam-type absorption refrigeration heat pump, improve the overall energy utilization.
下面结合具体数据说明本实用新型的先进性:The advanced nature of the present utility model is illustrated below in conjunction with specific data:
以60MW凝汽式汽轮机为例,机组配置两台射水泵和射水抽气器。射水抽气器流量为384m3/h,抽干空气量为27.5kg/h。射水泵流量为384m3/h,功率为55kW。真空每升高1kPa,发电煤耗降低2.6g/kwh(影响火力发电厂煤耗因素)在25-32℃之间射水抽气系统循环水温升高1℃,机组真空下降173Pa。按60MW的实测结果:射水抽气系统循环水温设计为20℃,夏季最高水温达到40℃,按一年中最热四个月平均水温32℃进行计算。供电标煤为750元/吨。热泵系数为3。一年中最热四个月将射水抽气器系统中水温由32℃降至25℃。射水抽气系统小时换热量为540GJ,需要热泵为50kW。机组真空提高0.173×(32-25)=1.211kPa,降低发电煤耗1.211×2.6=3.15g/kw,四个月节标煤3.15×24×30×4×60×103/106=544.32吨,节标煤费用544.32×750/104=40.82万元,其中热泵耗电量为144000kW,增加电费5.76万元。减少低加进汽量增加机组发电量11kwh,四个月多发电31680kW。产生效益1.2672万元。合计降本36.33万元。相同情况下取一年中最热四个月为对比参考。原电厂采用的方法一串水溢流方式可提高机组真空约0.3kPa,但增加了新鲜水采供和水处理费用1万元。采用的方法二增开一台射水泵可提高机组真空约0.2kPa,增加电耗158400kW,增加电费6.3万元。Taking a 60MW condensing steam turbine as an example, the unit is equipped with two jet pumps and jet extractors. The flow rate of the jet air extractor is 384m 3 /h, and the exhaust air volume is 27.5kg/h. The jet pump has a flow rate of 384m 3 /h and a power of 55kW. Every time the vacuum increases by 1kPa, the coal consumption of power generation decreases by 2.6g/kwh (factors affecting the coal consumption of thermal power plants). When the circulating water temperature of the jet pumping system increases by 1℃ between 25-32℃, the vacuum of the unit decreases by 173Pa. According to the actual measurement results of 60MW: the circulating water temperature of the jet pumping system is designed to be 20°C, and the highest water temperature in summer reaches 40°C, and the calculation is based on the average water temperature of the hottest four months of the year at 32°C. The standard coal for power supply is 750 yuan/ton. The heat pump factor is 3. In the hottest four months of the year, the water temperature in the water ejector system will be reduced from 32°C to 25°C. The water jet pumping system has an hourly heat exchange rate of 540GJ and requires a heat pump of 50kW. The vacuum of the unit is increased by 0.173×(32-25)=1.211kPa, the coal consumption of power generation is reduced by 1.211×2.6=3.15g/kw, and the four-month standard coal is 3.15×24×30×4×60×10 3 /10 6 =544.32 tons , the cost of saving standard coal is 544.32×750/10 4 =408,200 yuan, of which the power consumption of the heat pump is 144,000 kW, and the electricity cost is increased by 57,600 yuan. Reducing the steam intake at low temperature increases the power generation of the unit by 11kwh, and generates 31680kW more in four months. Generated benefits of 12,672 yuan. The total cost reduction was 363,300 yuan. Under the same circumstances, the hottest four months of the year are taken as reference for comparison. The method adopted by the original power plant can increase the vacuum of the unit by about 0.3kPa, but it increases the cost of fresh water supply and water treatment by 10,000 yuan. The second method adopted is to add a water jet pump to increase the vacuum of the unit by about 0.2kPa, increase the power consumption by 158400kW, and increase the electricity cost by 63,000 yuan.
通过上述实施例可知,使用本实用新型所提供的故障测距装置具有以下有益效果:本实用新型提供的基于热泵的凝汽式汽轮机系统,通过热泵蒸发器吸热,将射水箱循环水温度由较高温度降至设计温度附近后回到射水箱。由于降低了射水抽气器的工作温度,使射水抽气器处于较高效率区间,抽吸不凝气体的能力保持设计水平,从而提高机组的真空度,降低机组发电煤耗,提高机组的经济性。It can be seen from the above embodiments that using the fault location device provided by the utility model has the following beneficial effects: the condensing steam turbine system based on the heat pump provided by the utility model absorbs heat through the heat pump evaporator, and the temperature of the circulating water in the jet tank is changed from After the higher temperature drops to near the design temperature, it returns to the jet tank. Because the working temperature of the water jet extractor is reduced, the water jet extractor is in a relatively high efficiency range, and the ability to pump non-condensable gas maintains the design level, thereby increasing the vacuum degree of the unit, reducing the coal consumption of the unit for power generation, and improving the economy of the unit .
以上实施方式仅用于说明本实用新型,而并非对本实用新型的限制,有关技术领域的普通技术人员,在不脱离本实用新型的精神和范围的情况下,还可以做出各种变化和变型。因此所有等同的技术方案也属于本实用新型的保护范畴。The above embodiments are only used to illustrate the utility model, but not to limit the utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the utility model. . Therefore, all equivalent technical solutions also belong to the protection category of the present utility model.
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CN107420275A (en) * | 2017-07-04 | 2017-12-01 | 北京博达深地热发电工程技术研究院 | The underground heat screw expander TRT of high usage |
CN109804139A (en) * | 2016-08-15 | 2019-05-24 | 福彻尔贝有限公司 | Thermodynamic cycle device and method |
DE102020131706A1 (en) | 2020-11-30 | 2022-06-02 | Man Energy Solutions Se | System and method for storing and delivering electrical energy with its storage as thermal energy |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN109804139A (en) * | 2016-08-15 | 2019-05-24 | 福彻尔贝有限公司 | Thermodynamic cycle device and method |
CN109804139B (en) * | 2016-08-15 | 2021-10-15 | 福彻尔贝有限公司 | Thermodynamic cycle apparatus and method |
CN107420275A (en) * | 2017-07-04 | 2017-12-01 | 北京博达深地热发电工程技术研究院 | The underground heat screw expander TRT of high usage |
DE102020131706A1 (en) | 2020-11-30 | 2022-06-02 | Man Energy Solutions Se | System and method for storing and delivering electrical energy with its storage as thermal energy |
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