The invention discloses a system for safe and stable operation of steam turbine and low pressure heater, including steam turbine and low pressure heater, steam turbine exhaust through condenser and condensate pump to condensate inlet end of low pressure heater, steam turbine exhaust through check valve into steam interface end of low pressure heater, in check valve and low pressure heater A first solenoid valve and a water level detector are connected in series between the steam interface ends of the pressure heater, the water flow detector is connected with a drain pipe through the drain valve, the hot water outlet end of the low pressure heater is equipped with an electric valve and is connected with the condensate inlet end of the low pressure heater of the lower level, and the condensate inlet end of the low pressure heater is equipped with a low pressure of the lower level. A branch pipe connected to the condensate inlet of the heater is provided with a second solenoid valve. The first solenoid valve, the second solenoid valve, the drainage valve and the electric valve are controlled by the water level signal of the water flow detector. The invention has the advantages that the reverse flow can be closed promptly and tightly, and the low pressure heating can be kept stable operation.
【技术实现步骤摘要】
一种用于汽轮机和低加安全稳定运行的系统
本专利技术属于汽轮机的
,具体涉及一种用于低压加热器,特别是处于真空状态下的低压加热器连接的汽轮机和低加安全稳定运行的系统。
技术介绍
低压加热器(简称低加)由于它的内部压力低于外界大气压,存在大气通过连接件的缝隙渗入低加,并危及低加运行安全、经济运行的可能性。同时,混合式低压加热器水压极可能高于汽轮机抽汽的压力,低加中的水容易出现倒流进入汽轮机,将会对电厂运行的经济性造成较大的损失并威胁电厂运行的安全。
技术实现思路
针对现有技术中存在的技术问题,本专利技术提供了一种用于汽轮机和低加安全稳定运行的系统,该装置能保证及时、严密关闭逆向水流,且能保持低压加热器运行稳定。为了解决上述技术问题,本专利技术采用了如下技术方案:一种用于汽轮机和低加安全稳定运行的系统,包括汽轮机和低压加热器,汽轮机排汽经凝汽器和凝结水泵送至低压加热器的冷凝水进口端;汽轮机抽出的蒸汽经逆止阀接入低压加热器的蒸汽接口端,在逆止阀与低压加热器的蒸汽接口端之间串接有第一电磁阀与水流探测器,水流探测器通过排水阀连接排水管,低压加热器的热水出口端装有电动阀并与下 ...
【技术保护点】
1.一种用于汽轮机和低加安全稳定运行的系统,其特征在于:包括汽轮机(1)和低压加热器(4),汽轮机(1)排汽经凝汽器(2)和凝结水泵(3)送至低压加热器(4)的冷凝水进口端;汽轮机(1)抽出的蒸汽经逆止阀(5)接入低压加热器(4)的蒸汽接口端,在逆止阀(5)与低压加热器(4)的蒸汽接口端之间串接有第一电磁阀(6)与水流探测器(7),水流探测器(7)通过排水阀(8)连接排水管,低压加热器(4)的热水出口端装有电动阀(10)并与下一级低压加热器的冷凝水进口端接通,低压加热器(4)的冷凝水进口端设有与下一级低压加热器的冷凝水进口端接通的支管,该支管上装有第二电磁阀(9),所述第一 ...
【技术特征摘要】
1.一种用于汽轮机和低加安全稳定运行的系统,其特征在于:包括汽轮机(1)和低压加热器(4),汽轮机(1)排汽经凝汽器(2)和凝结水泵(3)送至低压加热器(4)的冷凝水进口端;汽轮机(1)抽出的蒸汽经逆止阀(5)接入低压加热器(4)的蒸汽接口端,在逆止阀(5)与低压加热器(4)的蒸汽接口端之间串接有第一电磁阀(6)与水流探测器(7),水流探测器(7)通过排水阀(8)连接排水管,低压加热器(4)的热水出口端装有电动阀(10)并与下一级低压加热器的冷凝水进口端接通,低压加热器(4)的冷凝水进口端设有与下一级低压加热器的冷凝...
【专利技术属性】
技术研发人员:陈红旭,孙瑞华,费琳翔,罗靖,冉景煜,方瑞明,
申请(专利权)人:重庆大学,
类型:发明
国别省市:重庆,50
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