WO2023280037A1 - 一种凝结水精处理运行保护系统 - Google Patents

一种凝结水精处理运行保护系统 Download PDF

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WO2023280037A1
WO2023280037A1 PCT/CN2022/102472 CN2022102472W WO2023280037A1 WO 2023280037 A1 WO2023280037 A1 WO 2023280037A1 CN 2022102472 W CN2022102472 W CN 2022102472W WO 2023280037 A1 WO2023280037 A1 WO 2023280037A1
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inlet
mixed bed
water inlet
condensate
water
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PCT/CN2022/102472
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English (en)
French (fr)
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王钊
王宁飞
贾予平
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西安热工研究院有限公司
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Publication of WO2023280037A1 publication Critical patent/WO2023280037A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure

Definitions

  • the application belongs to the technical field of condensate polishing treatment in thermal power plants, and relates to an operation protection system for condensate polishing treatment.
  • the main task of the condensate polishing system is to remove corrosion products and various soluble impurities in the thermal system. It is the most important furnace water treatment facility for purifying boiler feed water and ensuring the quality of water vapor in the water vapor circulation system. At the same time, the system also needs to consume a large amount of demineralized water and acid and alkali to regenerate resin, so it is also one of the main discharge sources of high-salt wastewater in the whole plant.
  • Stable inlet water pressure is the prerequisite for safe, efficient and economical operation of condensate polishing system.
  • the condensate pump generally adopts the frequency conversion operation mode, and its outlet pressure is low and the pressure fluctuation is small; when the power frequency operation mode is adopted, the outlet pressure is high and the pressure fluctuation is large.
  • the power plant needs to periodically switch the condensate pump between the frequency conversion and power frequency conditions.
  • the outlet pressure of the condensate pump fluctuates violently instantaneously, and the finishing system will frequently suffer from forward and reverse "water hammer" impacts, which can easily lead to bias flow of the high-speed mixed bed due to deformation and damage of the upper water distribution device, and then lead to its cycle control.
  • the amount of water is reduced and the operating cost is increased.
  • the deformed and damaged water distribution device has a poor interception effect on the resin.
  • the resin will enter the upper part of the water distribution device along the deformed joint and accumulate in the water cap.
  • the resin in the fine treatment inlet pipe will directly enter the water supply system through the system bypass, and the low-molecular organic acid produced by the thermal decomposition of the resin will seriously damage the quality of soda water and increase the corrosion of the unit Risk, if the amount of resin poured back is large, it will block the pre-filter of the feed water pump, and in serious cases, it will cause the unit to stop.
  • the current research is mainly focused on improving the load shock resistance by improving the type of water distribution device, and preventing resin backflow by installing a check valve at the inlet of the high-speed mixed bed, etc., and has not touched the root of the problem.
  • the purpose of this application is to overcome the above-mentioned shortcomings of the prior art, and provide a condensate polishing operation protection system, which can effectively avoid the water hammer problem caused by the fluctuation of the outlet pressure of the condensate pump, and effectively prevent resin backflow at the same time.
  • the condensate polishing operation protection system described in this application includes a condensate pump, a water inlet main pipe composite accumulator, a water inlet pressure gauge, a normal water inlet electric valve, a resin trap, and a mixed bed for condensate polishing , expander, emergency water inlet electric valve, mixed bed inlet composite accumulator, automatic control system and condensate mixed bed outlet jellyfish pipe;
  • the outlet of the condensate pump is divided into two paths, one of which is connected with the inlet of the composite accumulator of the water inlet pipe, and the other is connected with one end of the normal water inlet electric valve and the inlet of the resin trap through the water inlet pressure gauge.
  • the other end of the water inlet electric valve is connected with the inlet of the condensate polishing mixed bed, and the outlet of the resin trap is connected with the inlet of the condensate polishing mixed bed through the expander and the emergency water inlet electric valve.
  • the outlet of the bed is connected with the outlet pipe of the condensate mixed bed, the water inlet of the composite accumulator at the inlet of the mixed bed is connected with the inlet of the mixed bed for condensate fine treatment, and the automatic control system is connected with the water inlet pressure gauge and the normal water inlet electric valve And the emergency water inlet electric valve is connected.
  • It also includes an air compressor, wherein the outlet of the air compressor communicates with the gas side inlet of the composite accumulator of the water inlet pipe and the gas side inlet of the mixed bed inlet composite accumulator, and the automatic control system is connected with the air compressor.
  • the outlet of the air compressor is connected with the inlet of the air side of the composite accumulator through the inlet electric valve of the composite accumulator of the inlet pipe, and the automatic control system is connected with the electric valve of the composite accumulator of the inlet pipe.
  • the outlet of the air compressor is connected to the gas side inlet of the mixed bed inlet composite accumulator through the inlet electric valve of the mixed bed inlet composite accumulator, and the automatic control system is connected to the inlet electric valve of the mixed bed inlet composite accumulator.
  • the gas side of the composite accumulator of the water inlet pipe is equipped with a pressure gauge for monitoring the energy storage of the water inlet pipe, and the automatic control system is connected with the pressure gauge for monitoring the energy storage of the water inlet pipe.
  • a mixed bed inlet energy storage monitoring pressure gauge is installed on the gas side of the mixed bed inlet composite accumulator, and the automatic control system is connected with the mixed bed inlet energy storage monitoring pressure gauge.
  • the automatic control system detects the inlet water pressure fluctuation through the inlet water pressure gauge.
  • the composite accumulator of the water inlet pipe is used to initially Absorb and reduce the pressure fluctuation of the inlet water from the condensate pump, open the normal water inlet electric valve, close the emergency water inlet electric valve, and the condensed water enters the condensate fine treatment mixed bed after being further absorbed and reduced by the composite accumulator at the inlet of the mixed bed. After being treated by the condensed water polishing mixed bed, it enters the condensed water mixed bed outlet jellyfish pipe.
  • the automatic control system detects the fluctuation of the inlet water pressure through the inlet water pressure gauge.
  • the fluctuation of the inlet water pressure is in the working condition of the condensate pump switching from power frequency to frequency conversion or the working condition of the condensate pump accident, it will be compounded through the inlet water pipe.
  • the accumulator initially absorbs and reduces the pressure fluctuation of the condensed water pump, opens the emergency water inlet electric valve, closes the normal water inlet electric valve, and the condensed water enters the condensate polishing treatment after being further absorbed and reduced by the composite accumulator at the inlet of the mixed bed In the mixed bed, after condensate polishing treatment and mixed bed treatment, it enters the condensate mixed bed and exits the jellyfish pipe.
  • the condensate polishing operation protection system described in this application effectively absorbs and reduces the pressure fluctuation of the condensate polishing mixed bed inlet pipeline through the composite accumulator of the water inlet pipe and the mixed bed inlet composite accumulator during specific operation, Avoid the problem of frequent forward and reverse water hammer in the polishing system when the outlet pressure of the condensate pump fluctuates suddenly. At the same time, avoid the deviation of the condensate polishing mixed bed due to the deformation and damage of the upper water distribution device, and increase the mixing of the condensate polishing.
  • this application uses the expander and resin catcher to collect and capture the leaked resin when the pressure of the condensate pump fluctuates or is abnormal, so as to solve the problem of instantaneous formation at the entrance of the polishing system. Negative pressure sucks the resin accumulated in the fine treatment mixed bed water cap into the fine treatment water inlet pipeline and finally enters the water supply system.
  • Fig. 1 is a structural schematic diagram of the present application.
  • 1 is the air compressor
  • 2 is the composite accumulator of the water inlet pipe
  • 3 is the composite accumulator of the mixed bed inlet
  • 4 is the resin trap
  • 5 is the expander
  • 6 is the emergency water inlet electric valve
  • 7 is the normal state Water inlet electric valve
  • 9 is the energy storage monitoring pressure gauge of the water inlet main pipe
  • 10 is the energy storage monitoring pressure gauge at the inlet of the mixed bed
  • 11 is the water inlet pressure gauge
  • 12 is the composite storage water inlet pipe Energizer air intake electric valve
  • 13 is mixed bed inlet composite accumulator air intake electric valve
  • 14 is an automatic control system.
  • the condensate polishing operation protection system described in this application includes a condensate pump, an air compressor 1, a water inlet main pipe composite accumulator 2, a mixed bed inlet composite accumulator 3, a resin trap 4, and an expander 5.
  • the outlet of the condensate pump is divided into two paths, one of which is connected to the inlet of the composite accumulator 2 of the water inlet main pipe, and the other path passes through the inlet pressure gauge 11, one end of the normal water inlet electric valve 7 and the inlet of the resin trap 4
  • the other end of the normal water inlet electric valve 7 is connected to the inlet of the condensate polishing mixed bed 8, and the outlet of the resin trap 4 is connected to the condensate polishing mixed bed 8 through the expander 5 and the emergency water inlet electric valve 6
  • the inlet is connected, and the outlet of the condensed water polishing mixed bed 8 is connected with the outlet pipe of the condensed water mixed bed.
  • the outlet of the air compressor 1 is divided into two paths, one of which is connected to the gas side inlet of the composite accumulator 2 through the water inlet pipe composite accumulator inlet electric valve 12, and the other path is connected to the gas side inlet of the water inlet composite accumulator 2, and the other path is connected to the mixed bed inlet composite accumulator.
  • the energy inlet electric valve 13 is connected with the gas side inlet of the mixed bed inlet composite accumulator 3, and the water inlet of the mixed bed inlet composite accumulator 3 is connected with the inlet of the condensate polishing mixed bed 8.
  • the gas side of the composite accumulator 2 of the water inlet pipe is equipped with a pressure gauge 9 for monitoring the energy storage of the water inlet pipe
  • the gas side of the composite accumulator 3 at the inlet of the mixed bed is equipped with a pressure gauge 10 for monitoring the energy storage at the inlet of the mixed bed.
  • Automatic control system 14 automatic control system 14 and air compressor 1, water inlet pressure gauge 11, water inlet main pipe energy storage monitoring pressure gauge 9, mixed bed inlet energy storage monitoring pressure gauge 10, normal water inlet electric valve 7, emergency inlet
  • the electric water valve 6 the electric intake valve 12 of the composite accumulator of the water inlet pipe and the electric intake valve 13 of the composite accumulator at the inlet of the mixed bed are connected.
  • the automatic control system 14 detects the fluctuation of the inlet water pressure through the inlet water pressure gauge 11.
  • the pipe composite accumulator 2 initially absorbs and reduces the pressure fluctuation of the water inlet from the condensate pump, opens the normal water inlet electric valve 7, and closes the emergency water inlet electric valve 6, and the condensate is further absorbed and reduced by the composite accumulator 3 at the inlet of the mixed bed to reduce the pressure fluctuation Then enter the condensate polishing mixed bed 8, and then enter the condensate mixed bed outlet jellyfish pipe after being treated by the condensate polishing mixed bed 8.
  • the automatic control system 14 detects the inlet water pressure fluctuation through the inlet water pressure gauge 11.
  • the pipe composite accumulator 2 initially absorbs and reduces the pressure fluctuation of the condensed water pump, opens the emergency water inlet electric valve 6, and closes the normal water inlet electric valve 7, and the condensed water is further absorbed and reduced by the composite accumulator 3 at the inlet of the mixed bed to reduce the pressure fluctuation Then enter the condensed water polishing mixed bed 8, and then enter the condensed water mixed bed to exit the jellyfish pipe after being treated by the condensed water polished mixed bed 8.
  • the air compressor 1 When working, when the air pressure detected by the energy storage monitoring pressure gauge 9 of the inlet jellyfish tube is less than the preset air pressure value, the air compressor 1 is started, and the air intake electric valve 12 of the composite accumulator of the inlet jellyfish tube is opened to automatically feed the jellyfish Fill the composite accumulator 2 with compressed air; when the air pressure detected by the energy storage monitoring pressure gauge 10 at the inlet of the mixed bed is lower than the preset air pressure value, start the air compressor 1 and open the composite accumulator at the inlet of the mixed bed for air intake.
  • the electric valve 13 supplies compressed air to the composite accumulator 3 at the inlet of the mixed bed to ensure that the composite accumulator 2 of the inlet pipe and the composite accumulator 3 at the inlet of the mixed bed can absorb and reduce the pipeline pressure.
  • the automatic control system 14 judges the operating conditions of the condensate polishing system through the pressure change detected by the water inlet pressure gauge 11, thereby controlling the opening and closing of the normal water inlet electric valve 7 and the emergency water inlet electric valve 6;
  • the control system 14 judges the working status of the composite accumulator 2 of the water inlet pipe and the composite accumulator 3 of the mixed bed inlet through the pressure value detected by the pressure gauge 9 of the water inlet pipe energy storage monitoring pressure gauge 10 and the energy storage monitoring pressure gauge 10 of the mixed bed inlet, It is also linked with the air compressor 1, the composite accumulator inlet electric valve 12 of the water inlet pipe, and the composite accumulator inlet electric valve 13 at the inlet of the mixed bed, and compositely stores energy for the composite accumulator 2 of the water inlet pipe and the inlet of the mixed bed.
  • the device 3 is used for air replenishment operation to ensure the absorption and reduction of pipeline pressure by the composite accumulator 2 of the water inlet pipe and the composite accumulator 3 of the mixed bed inlet.

Abstract

本申请公开了一种凝结水精处理运行保护系统，凝结水泵的出口分为两路，其中，一路与进水母管复合蓄能器的入口相连通，另一路经进水压力表分别与常态进水电动阀的一端及树脂捕捉器的入口相连通，常态进水电动阀的另一端与凝结水精处理混床的入口相连通，树脂捕捉器的出口经膨胀器及紧急进水电动阀与凝结水精处理混床的入口相连通，凝结水精处理混床的出口与凝结水混床出水母管相连通，混床入口复合蓄能器的进水口与凝结水精处理混床的入口相连通，自动控制系统与进水压力表、常态进水电动阀及紧急进水电动阀相连接，该系统有效避免凝结水泵出口压力波动时带来的水锤问题，同时有效防止树脂倒灌。

Description

一种凝结水精处理运行保护系统
相关申请的交叉引用
本申请要求在2021年7月5日提交中国专利局、申请号为202110758709.8、发明名称为“一种凝结水精处理运行保护系统”的中国专利申请的优先权，其全部内容通过引用的方式并入本文中。
技术领域
本申请属于火电厂凝结水精处理技术领域，涉及一种凝结水精处理运行保护系统。
背景技术
凝结水精处理系统的主要任务是去除热力系统中的腐蚀产物和各类溶解性杂质，是水汽循环系统中净化锅炉给水、保证水汽品质的最重要的炉内水处理设施。同时，该系统还需要消耗大量除盐水和酸碱用以再生树脂，因此其也是全厂高含盐量废水的主要排放源之一。
进水压力稳定是凝结水精处理系统安全、高效、经济运行的前提。正常情况下，凝结水泵一般采用变频运行方式，其出口压力较低，压力波动较小；采用工频运行方式时，其出口压力较高，压力波动较大。然而，为了保证凝结水泵能在变频器故障是正常切换到工频运行方式，电厂需要将凝结水泵在变频工况和工频工况定期进行切换测试。此时，凝结水泵出口压力瞬间剧烈波动，精处理系统会频繁遭受正向和反向“水锤”冲击，极易导致高速混床因上部布水装置变形损坏而发生偏流，进而致使其周期制水量减少，运行成本增加。同时，变形损坏的布水装置对树脂拦截作用变差，在高速混床充水过程中，树脂会沿变形的拼接缝进入布水装置上部，积存在水帽里。此种情况下，一方面会进一步加剧偏流问题，另一方面若凝结水泵异常跳机出口失压或由工频向变频运行方式切换时，精处理系统入口瞬间形成的负压会把上述水帽里积存的树脂吸入到精处理进水管路中。当凝结水泵故障消缺或重新投 入变频运行后，精处理进水管路中的树脂会经系统旁路直接进入给水系统，树脂受热分解产生的低分子有机酸会严重危害汽水品质，加大机组腐蚀风险，若倒灌的树脂量很大还回堵塞给水泵前置滤网，严重时还能造成机组非停。
为解决上述问题，当前研究主要集中在通过改善布水装置型式从而提高其抗负荷冲击能力、通过在高速混床进口加装止回阀从而防止树脂倒灌等方面，并未触及问题产生的根源。
发明内容
本申请的目的在于克服上述现有技术的缺点，提供了一种凝结水精处理运行保护系统，该系统有效避免凝结水泵出口压力波动时带来的水锤问题，同时有效防止树脂倒灌。
为达到上述目的，本申请所述的凝结水精处理运行保护系统包括凝结水泵、进水母管复合蓄能器、进水压力表、常态进水电动阀、树脂捕捉器、凝结水精处理混床、膨胀器、紧急进水电动阀、混床入口复合蓄能器、自动控制系统及凝结水混床出水母管；
凝结水泵的出口分为两路，其中，一路与进水母管复合蓄能器的入口相连通，另一路经进水压力表与常态进水电动阀的一端及树脂捕捉器的入口相连通，常态进水电动阀的另一端与凝结水精处理混床的入口相连通，树脂捕捉器的出口经膨胀器及紧急进水电动阀与凝结水精处理混床的入口相连通，凝结水精处理混床的出口与凝结水混床出水母管相连通，混床入口复合蓄能器的进水口与凝结水精处理混床的入口相连通，自动控制系统与进水压力表、常态进水电动阀及紧急进水电动阀相连接。
还包括空气压缩机，其中，空气压缩机的出口与进水母管复合蓄能器的气侧入口及混床入口复合蓄能器的气侧入口相连通，自动控制系统与空气压缩机相连接。
空气压缩机的出口经进水母管复合蓄能器进气电动阀与进水母管复合蓄能器的气侧入口相连通，自动控制系统与进水母管复合蓄能器进气电动阀相连接。
空气压缩机的出口经混床入口复合蓄能器进气电动阀与混床入口复合蓄能器的气侧入口相连通，自动控制系统与混床入口复合蓄能器进气电动阀 相连接。
进水母管复合蓄能器的气侧安装有进水母管蓄能监测压力表，自动控制系统与进水母管蓄能监测压力表相连接。
混床入口复合蓄能器的气侧安装有混床入口蓄能监测压力表，自动控制系统与混床入口蓄能监测压力表相连接。
自动控制系统通过进水压力表检测进水压力波动，当所述进水压力波动处于凝结水泵正常变频运行工况或由变频向工频切换工况时，则通过进水母管复合蓄能器初步吸收消减凝结水泵来的进水压力波动，打开常态进水电动阀，关闭紧急进水电动阀，凝结水经混床入口复合蓄能器进一步吸收消减压力波动后进入凝结水精处理混床中，再经凝结水精处理混床处理后进入凝结水混床出水母管中。
在工作时，自动控制系统通过进水压力表检测进水压力波动，当所述进水压力波动处于凝结水泵由工频向变频切换工况或凝结水泵事故工况时，则通过进水母管复合蓄能器初步吸收消减凝结水泵来的进水压力波动，打开紧急进水电动阀，关闭常态进水电动阀，凝结水经混床入口复合蓄能器进一步吸收消减压力波动后进入凝结水精处理混床中，再经凝结水精处理混床处理后进入凝结水混床出水母管。
本申请具有以下有益效果：
本申请所述的凝结水精处理运行保护系统在具体操作时，通过进水母管复合蓄能器及混床入口复合蓄能器有效吸收及消减凝结水精处理混床入口管路的压力波动，避免凝结水泵出口压力瞬间剧烈波动时，精处理系统频繁遭受正向及反向水锤的问题，同时避免凝结水精处理混床因上部布水装置变形损坏而发生偏流，增加凝结水精处理混床周期制水量，继而提高凝结水精处理树脂运行周期；另外，本申请通过膨胀器及树脂捕捉器在凝结水泵压力波动或异常时对泄露树脂的收集及捕捉，解决精处理系统入口瞬间形成的负压将精处理混床水帽里积存的树脂吸入到精处理进水管路并最终进入给水系统的问题。
附图说明
图1为本申请的结构示意图。
其中，1为空气压缩机、2为进水母管复合蓄能器、3为混床入口复合蓄能器、4为树脂捕捉器、5为膨胀器、6为紧急进水电动阀、7为常态进水电动阀、8为凝结水精处理混床、9为进水母管蓄能监测压力表、10为混床入口蓄能监测压力表、11为进水压力表、12为进水母管复合蓄能器进气电动阀、13为混床入口复合蓄能器进气电动阀、14为自动控制系统。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，不是全部的实施例，而并非要限制本申请公开的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要的混淆本申请公开的概念。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
在附图中示出了根据本申请公开实施例的结构示意图。这些图并非是按比例绘制的，其中为了清楚表达的目的，放大了某些细节，并且可能省略了某些细节。图中所示出的各种区域、层的形状及它们之间的相对大小、位置关系仅是示例性的，实际中可能由于制造公差或技术限制而有所偏差，并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/层。
参考图1，本申请所述的凝结水精处理运行保护系统包括凝结水泵、空气压缩机1、进水母管复合蓄能器2、混床入口复合蓄能器3、树脂捕捉器4、膨胀器5、紧急进水电动阀6、常态进水电动阀7、凝结水精处理混床8、进水压力表11、进水母管复合蓄能器进气电动阀12、混床入口复合蓄能器进气电动阀13及自动控制系统14；
凝结水泵的出口分为两路，其中，一路与进水母管复合蓄能器2的入口相连通，另一路经进水压力表11与常态进水电动阀7的一端及树脂捕捉器4的入口相连通，常态进水电动阀7的另一端与凝结水精处理混床8的入口相连通，树脂捕捉器4的出口经膨胀器5及紧急进水电动阀6与凝结水精处理混床8的入口相连通，凝结水精处理混床8的出口与凝结水混床出水母管相 连通。
空气压缩机1的出口分为两路，其中一路经进水母管复合蓄能器进气电动阀12与进水母管复合蓄能器2的气侧入口相连通，另一路经混床入口复合蓄能器进气电动阀13与混床入口复合蓄能器3的气侧入口相连通，混床入口复合蓄能器3的进水口与凝结水精处理混床8的入口相连通。
进水母管复合蓄能器2的气侧安装有进水母管蓄能监测压力表9，混床入口复合蓄能器3的气侧安装有混床入口蓄能监测压力表10。
自动控制系统14，自动控制系统14与空气压缩机1、进水压力表11、进水母管蓄能监测压力表9、混床入口蓄能监测压力表10、常态进水电动阀7、紧急进水电动阀6、进水母管复合蓄能器进气电动阀12及混床入口复合蓄能器进气电动阀13相连接。
本申请的工作过程为：
在工作时，自动控制系统14通过进水压力表11检测进水压力波动，当所述进水压力波动处于凝结水泵正常变频运行工况或由变频向工频切换工况时，则通过进水母管复合蓄能器2初步吸收消减凝结水泵来的进水压力波动，打开常态进水电动阀7，关闭紧急进水电动阀6，凝结水经混床入口复合蓄能器3进一步吸收消减压力波动后进入凝结水精处理混床8中，再经凝结水精处理混床8处理后进入凝结水混床出水母管中。
在工作时，自动控制系统14通过进水压力表11检测进水压力波动，当所述进水压力波动处于凝结水泵由工频向变频切换工况或凝结水泵事故工况时，则通过进水母管复合蓄能器2初步吸收消减凝结水泵来的进水压力波动，打开紧急进水电动阀6，关闭常态进水电动阀7，凝结水经混床入口复合蓄能器3进一步吸收消减压力波动后进入凝结水精处理混床8中，再经凝结水精处理混床8处理后进入凝结水混床出水母管。
在凝结水泵由工频向变频切换工况或凝结水泵事故工况时，当精处理系统入口瞬间形成的负压，凝结水精处理混床8的水帽内积存的树脂被吸入到膨胀器5中进行减速及降压，减速降压后的树脂被树脂捕捉器4拦截捕捉，确保精处理混床树脂不会进入到凝结水泵中。
在工作时，当进水母管蓄能监测压力表9检测得到的气压小于预设气压值时，则启动空气压缩机1，打开进水母管复合蓄能器进气电动阀12，自动 向进水母管复合蓄能器2中补入压缩空气；当混床入口蓄能监测压力表10检测到的气压小于预设气压值时，则启动空气压缩机1，打开混床入口复合蓄能器进气电动阀13，向混床入口复合蓄能器3中补入压缩空气，以确保进水母管复合蓄能器2及混床入口复合蓄能器3对管路压力的吸收及消减作用。
在工作时，自动控制系统14通过进水压力表11检测到得的压力变化判断凝结水精处理系统的运行工况，从而控制常态进水电动阀7及紧急进水电动阀6启闭；自动控制系统14通过进水母管蓄能监测压力表9及混床入口蓄能监测压力表10检测得到的压力值判断进水母管复合蓄能器2及混床入口复合蓄能器3的工作状态，并与空气压缩机1、进水母管复合蓄能器进气电动阀12及混床入口复合蓄能器进气电动阀13联动，对进水母管复合蓄能器2及混床入口复合蓄能器3进行补气操作，以确保进水母管复合蓄能器2及混床入口复合蓄能器3对管路压力的吸收和消减作用。

Claims (8)

  1. 一种凝结水精处理运行保护系统，其特征在于，包括凝结水泵、进水母管复合蓄能器(2)、进水压力表(11)、常态进水电动阀(7)、树脂捕捉器(4)、凝结水精处理混床(8)、膨胀器(5)、紧急进水电动阀(6)、混床入口复合蓄能器(3)、自动控制系统(14)及凝结水混床出水母管；
    凝结水泵的出口分为两路，其中，一路与进水母管复合蓄能器(2)的入口相连通，另一路经进水压力表(11)与常态进水电动阀(7)的一端及树脂捕捉器(4)的入口相连通，常态进水电动阀(7)的另一端与凝结水精处理混床(8)的入口相连通，树脂捕捉器(4)的出口经膨胀器(5)及紧急进水电动阀(6)与凝结水精处理混床(8)的入口相连通，凝结水精处理混床(8)的出口与凝结水混床出水母管相连通，混床入口复合蓄能器(3)的进水口与凝结水精处理混床(8)的入口相连通，自动控制系统(14)与进水压力表(11)、常态进水电动阀(7)及紧急进水电动阀(6)相连接。
  2. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，还包括空气压缩机(1)，其中，空气压缩机(1)的出口与进水母管复合蓄能器(2)的气侧入口及混床入口复合蓄能器(3)的气侧入口相连通，自动控制系统(14)与空气压缩机(1)相连接。
  3. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，空气压缩机(1)的出口经进水母管复合蓄能器进气电动阀(12)与进水母管复合蓄能器(2)的气侧入口相连通，自动控制系统(14)与进水母管复合蓄能器进气电动阀(12)相连接。
  4. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，空气压缩机(1)的出口经混床入口复合蓄能器进气电动阀(13)与混床入口复 合蓄能器(3)的气侧入口相连通，自动控制系统(14)与混床入口复合蓄能器进气电动阀(13)相连接。
  5. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，进水母管复合蓄能器(2)的气侧安装有进水母管蓄能监测压力表(9)，自动控制系统(14)与进水母管蓄能监测压力表(9)相连接。
  6. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，混床入口复合蓄能器(3)的气侧安装有混床入口蓄能监测压力表(10)，自动控制系统(14)与混床入口蓄能监测压力表(10)相连接。
  7. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，自动控制系统(14)通过进水压力表(11)检测进水压力波动，当所述进水压力波动处于凝结水泵正常变频运行工况或由变频向工频切换工况时，则通过进水母管复合蓄能器(2)初步吸收消减凝结水泵来的进水压力波动，打开常态进水电动阀(7)，关闭紧急进水电动阀(6)，凝结水经混床入口复合蓄能器(3)进一步吸收消减压力波动后进入凝结水精处理混床(8)中，再经凝结水精处理混床(8)处理后进入凝结水混床出水母管中。
  8. 根据权利要求1所述的凝结水精处理运行保护系统，其特征在于，在工作时，自动控制系统(14)通过进水压力表(11)检测进水压力波动，当所述进水压力波动处于凝结水泵由工频向变频切换工况或凝结水泵事故工况时，则通过进水母管复合蓄能器(2)初步吸收消减凝结水泵来的进水压力波动，打开紧急进水电动阀(6)，关闭常态进水电动阀(7)，凝结水经混床入口复合蓄能器(3)进一步吸收消减压力波动后进入凝结水精处理混床(8)中，再经凝结水精处理混床(8)处理后进入凝结水混床出水母管。
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