WO2022198922A1 - Power plant multi-stage waste heat comprehensive utilizing apparatus and method - Google Patents
Power plant multi-stage waste heat comprehensive utilizing apparatus and method Download PDFInfo
- Publication number
- WO2022198922A1 WO2022198922A1 PCT/CN2021/115571 CN2021115571W WO2022198922A1 WO 2022198922 A1 WO2022198922 A1 WO 2022198922A1 CN 2021115571 W CN2021115571 W CN 2021115571W WO 2022198922 A1 WO2022198922 A1 WO 2022198922A1
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- WIPO (PCT)
- Prior art keywords
- heat pump
- lubricating oil
- absorption heat
- deaerator
- valve
- Prior art date
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- 239000002918 waste heat Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 104
- 239000010687 lubricating oil Substances 0.000 claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000006096 absorbing agent Substances 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims abstract description 7
- 239000010736 steam turbine oil Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
Definitions
- the invention belongs to the technical field of power plant waste heat recovery and utilization, energy conservation and environmental protection, and relates to a power plant multi-stage waste heat comprehensive utilization device and method.
- the power generation efficiency of traditional large-scale units is less than 50%, and the comprehensive utilization rate of energy under heating conditions is still less than 60%.
- the energy taken away by the low temperature circulating water or air accounts for more than 30% of the total energy consumption.
- the utilization of waste heat is related to major issues such as energy conservation and emission reduction in power plants, comprehensive utilization of resources, and ecological environmental protection.
- the research on the utilization of waste heat in power plants mainly focuses on the easy recovery of high-temperature flue gas and low-grade circulating water with large heat reserves, and less research on other working fluids with recovery value.
- the heat conducted by the steam to the bearing and the heat generated by the rotation of the bearing need to be taken away through the lubricating oil system.
- the lubricating oil enters the bearing shell at a temperature of about 40 °C for heat exchange, and the return oil temperature can reach above 60 °C .
- the flow rate of the lubricating oil system of large-scale units reaches more than 200m 3 /h, and this part of the heat is transferred to the cooling water system through the heat exchanger, resulting in heat loss.
- the function of the deaerator in the power plant is to spray steam into the water through the bubbling tube, and heat the feed water to remove oxygen in the water.
- Oxygen is mixed with a part of steam and non-condensable gas and is discharged into the atmosphere through the exhaust pipe.
- the exhaust steam volume of the deaerator of the large unit can reach 180-300kg/h, and the temperature can reach 180 °C, which wastes a lot of water vapor and the heat contained in it. And the formation of obvious white plume, causing visual pollution.
- the purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and to provide a multi-stage waste heat comprehensive utilization device and method in a power plant, which can eliminate the problem of white smoke plume from deaerator exhaust, reduce lubricating oil temperature, and improve Condensate water temperature to achieve heat recovery.
- the multi-stage waste heat comprehensive utilization device of the power plant includes the induced draft fan condensate water pipeline, the condenser, the absorption heat pump absorber, the absorption heat pump condenser, the low pressure heater water side pipeline of the unit, and the lubricating oil.
- the outlet of the condensed water pipeline of the induced draft fan is divided into two paths, one of which is connected to the condenser, and the other is connected to the low-pressure heater water of the unit through the heat-absorbing side of the absorption heat pump absorber and the heat-absorbing side of the absorption heat pump condenser in turn.
- the side pipes are connected;
- the lubricating oil supply pipeline is connected with the first opening of the lubricating oil supply three-way valve, the second opening of the lubricating oil supplying three-way valve is connected with the inlet of the lubricating oil cooler, and the lubricating oil supplying three-way valve is connected with the inlet of the lubricating oil cooler.
- the third opening of the absorbing heat pump evaporator is communicated with the lubricating oil cooler through the heat release side of the absorption heat pump evaporator, and the outlet of the lubricating oil cooler is communicated with the external steam turbine oil inlet pipeline;
- the outlet of the deaerator is communicated with the first opening of the deaerator exhaust three-way valve, and the second opening of the deaerator exhaust three-way valve is communicated with the deaerator exhaust pipe, and the deaerator exhausts steam.
- the third opening of the three-way valve is communicated with the deaerator emptying pipeline through the exothermic side of the absorption heat pump generator;
- the working medium outlet of the absorption heat pump generator is connected with the working medium side of the absorption heat pump evaporator through the working medium side of the absorption heat pump condenser and the expansion valve, and the working medium outlet of the absorption heat pump evaporator is connected with the working medium of the absorption heat pump absorber.
- the quality entrance is connected;
- the solution outlet of the absorption heat pump generator is connected to the solution inlet of the absorption heat pump absorber through the exothermic side of the solution heat exchanger, and the solution outlet of the absorption heat pump absorber is connected to the absorption heat pump through the heat absorption side of the solution heat exchanger.
- the solution inlets of the generator are connected.
- the outlet of the condensed water pipeline of the induced draft fan is communicated with the condenser through the bypass shut-off valve.
- the outlet of the condensed water pipe of the induced draft fan is communicated with the heat absorption side of the absorption heat pump absorber through the inlet stop valve.
- the heat absorption side of the absorption heat pump condenser is connected with the water side pipeline of the low pressure heater of the unit through the outlet stop valve.
- the heat release side of the absorption heat pump evaporator is communicated with the lubricating oil cooler through the lubricating oil supply cut-off valve.
- the exothermic side of the absorption heat pump generator is communicated with the deaerator exhaust pipe through the deaerator exhaust stop valve.
- the solution outlet of the absorption heat pump absorber is communicated with the heat absorption side of the solution heat exchanger through the solution pump.
- the exothermic side of the solution heat exchanger is communicated with the solution inlet of the absorption heat pump absorber through a pressure reducing valve.
- a method for comprehensive utilization of multi-stage waste heat in a power plant includes the following steps:
- the steam output by the deaerator enters the absorption heat pump generator after passing through the deaerator exhaust three-way valve to release heat and cool down, and then is discharged from the exhaust pipe;
- the condensed water output from the condensed water pipeline of the induced draft fan is heated by the absorption heat pump absorber and the absorption heat pump condenser in turn, and then enters the water side pipeline of the low pressure heater of the unit through the outlet stop valve;
- the lubricating oil output from the lubricating oil supply pipeline enters the absorption heat pump evaporator to cool down through the lubricating oil supply three-way valve, and then enters the lubricating oil system of the unit through the lubricating oil cooler;
- the deaerator exhaust steam is used to drive the absorption heat pump, the high temperature oil return heat of the lubricating oil system is recovered, and the obtained heat is sent to the absorption heat pump.
- the condensed water of the induced draft fan is heated to realize the recovery and utilization of the exhaust heat of the deaerator and the return oil of the lubricating oil, and at the same time reduce the temperature of the lubricating oil, reduce the consumption of the cooling water system, and save the power consumption of the plant.
- the exhaust steam of the deaerator releases heat to cool down and condense, so as to eliminate the white plume, the structure is simple, the operation is convenient, and the practicability is extremely strong.
- FIG. 1 is a schematic structural diagram of the present invention.
- 1 condenser
- 2 deaerator
- 3 absorption heat pump generator
- 4 absorption heat pump condenser
- 5 absorption heat pump evaporator
- 6 absorption heat pump absorber
- 7 solution heat Exchanger
- 8 is the lubricating oil cooler
- 9 is the condensate bypass shut-off valve of the induced draft fan
- 10 is the inlet shut-off valve
- 11 is the outlet shut-off valve
- 12 is the lubricating oil supply three-way valve
- 13 is the lubricating oil supply shut-off valve
- Valve 14 is the deaerator exhaust three-way valve
- 15 is the deaerator exhaust stop valve
- 16 is the expansion valve
- 17 is the pressure reducing valve
- 18 is the solution pump.
- the multi-stage waste heat comprehensive utilization device of the power plant includes a condensed water pipeline, a condenser 1, an absorption heat pump absorber 6, an absorption heat pump condenser 4, a low-pressure heater water side pipeline of the unit, and lubricating oil.
- the lubricating oil supply pipeline is connected with the first opening of the lubricating oil supply three-way valve 12, and the lubricating oil supply three
- the second opening of the through valve 12 is connected to the inlet of the lubricating oil cooler 8, and the third opening of the lubricating oil supply three-way valve 12 is connected to the lubricating oil cooler 8 through the heat
- the outlet of the condensed water pipe of the induced draft fan is connected to the condenser 1 through the condensed water bypass cut-off valve 9 of the induced draft fan;
- the heat absorption side of the absorption heat pump condenser 4 is connected to the water side pipeline of the low pressure heater of the unit through the outlet cut-off valve 11; the heat release side of the absorption heat pump evaporator 5 is cooled with the lubricating oil through the lubricating oil supply cut-off valve 13
- the heat release side of the absorption heat pump generator 3 is connected to the deaerator emptying pipeline through the deaerator exhaust stop valve 15; the solution outlet of the absorption heat pump absorber 6 is connected to the solution heat through the solution pump 18.
- the heat-absorbing side of the heat exchanger 7 is communicated with; the heat-releasing side of the solution heat exchanger 7 is communicated with the solution inlet of the absorption heat pump absorber 6 through the pressure reducing valve 17 .
- the multi-stage waste heat comprehensive utilization method of the power plant according to the present invention comprises the following steps:
- the steam output from the deaerator 2 enters the absorption heat pump generator 3 after passing through the deaerator exhaust three-way valve 14 to release heat and cool down, and then is discharged from the emptying pipeline to eliminate white plumes;
- the condensed water output by the induced draft fan condensate water pipeline is heated by the absorption heat pump absorber 6 and the absorption heat pump condenser 4 in turn, and then enters the water side pipeline of the low pressure heater of the unit through the outlet stop valve 11;
- the lubricating oil output from the lubricating oil supply pipeline enters the absorption heat pump evaporator 5 after passing through the lubricating oil supply three-way valve 12 to cool down, and then passes through the lubricating oil supply shut-off valve 13 and the lubricating oil cooler 8 to the lubricating oil system of the unit. .
- the temperature of the lubricating oil at the outlet of the lubricating oil cooler 8 can be supplemented by adjusting the parameters of the lubricating oil cooler 8.
- shut down the deaerator 2 exhaust steam, lubricating oil and condensed water of the induced draft fan in sequence. Specifically, first close the third opening of the deaerator exhaust three-way valve 14, and open the deaerator at the same time.
- close the third opening of the lubricating oil supply three-way valve 12 close the third opening of the lubricating oil supply three-way valve 12, and finally close the lubricating oil supply stop valve 13.
- the present invention can be used for both newly-built units and existing units.
- the unit can be operated normally or at work. It can operate stably and safely when the conditions change.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A power plant multi-stage waste heat comprehensive utilizing apparatus and method. The apparatus comprises a condensed water pipeline, a condenser (1), an absorption heat pump absorber (6), an absorption heat pump condenser (4), a unit low-pressure heater water side pipeline, a lubricating oil supply pipeline, a lubricating oil supply three-way valve (12), a lubricating oil cooler (8), an absorption heat pump evaporator (5), a deaerator (2), a deaerator steam exhaust three-way valve (14), a deaerator emptying pipeline, an absorption heat pump generator (3), an expansion valve (16), and a solution heat exchanger (7). By means of the apparatus and the method, the steam exhaust of the deaerator (2) and the recycling of waste heat of return oil of lubricating oil are realized, the temperature of condensed water is increased, and the problem of white smoke plume of exhaust steam of the deaerator (2) is solved.
Description
本发明属于电厂余热回收利用及节能环保技术领域，涉及一种电厂多阶余热综合利用装置及方法。The invention belongs to the technical field of power plant waste heat recovery and utilization, energy conservation and environmental protection, and relates to a power plant multi-stage waste heat comprehensive utilization device and method.
电厂作为一次能源的消耗大户，传统大型机组的发电效率不到50％，在供热工况下的能源综合利用率仍不到60％。在损失的能量中，由低温循环水或空气所带走的能量占总耗能的30％以上。余热利用关系到电厂节能减排、资源综合利用以及生态环境保护等重大问题。目前，电厂余热利用的研究主要集中在易于回收的高温烟气及低品位热量储量较大的循环水，针对其他具有回收价值的工质则研究较少。As a large consumer of primary energy, the power generation efficiency of traditional large-scale units is less than 50%, and the comprehensive utilization rate of energy under heating conditions is still less than 60%. Among the lost energy, the energy taken away by the low temperature circulating water or air accounts for more than 30% of the total energy consumption. The utilization of waste heat is related to major issues such as energy conservation and emission reduction in power plants, comprehensive utilization of resources, and ecological environmental protection. At present, the research on the utilization of waste heat in power plants mainly focuses on the easy recovery of high-temperature flue gas and low-grade circulating water with large heat reserves, and less research on other working fluids with recovery value.
汽轮机发电机组在运行过程中，蒸汽传导至轴承的热量及轴承转动产生的热量都需要通过润滑油系统带走，润滑油以40℃左右的温度进入轴瓦换热，回油温度可以达到60℃以上。大型机组润滑油系统流量达到200m
3/h以上，这部分热量通过换热器传递给冷却水系统，造成热量损失。
During the operation of the steam turbine generator set, the heat conducted by the steam to the bearing and the heat generated by the rotation of the bearing need to be taken away through the lubricating oil system. The lubricating oil enters the bearing shell at a temperature of about 40 °C for heat exchange, and the return oil temperature can reach above 60 °C . The flow rate of the lubricating oil system of large-scale units reaches more than 200m 3 /h, and this part of the heat is transferred to the cooling water system through the heat exchanger, resulting in heat loss.
电厂除氧器的作用是将蒸汽通过鼓泡管喷入水中，对给水加热以除去水中的氧。氧气混合一部分蒸汽及不凝气体通过排汽管排入大气，大型机组除氧器运行排汽量可以达到180～300kg/h，温度达到180℃，浪费了大量的水蒸汽及所含的热量，且形成明显的白色烟羽，造成视觉污染。The function of the deaerator in the power plant is to spray steam into the water through the bubbling tube, and heat the feed water to remove oxygen in the water. Oxygen is mixed with a part of steam and non-condensable gas and is discharged into the atmosphere through the exhaust pipe. The exhaust steam volume of the deaerator of the large unit can reach 180-300kg/h, and the temperature can reach 180 °C, which wastes a lot of water vapor and the heat contained in it. And the formation of obvious white plume, causing visual pollution.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服上述现有技术的缺点，提供了一种电厂多阶余热综合利用装置及方法，该装置及方法能够消除除氧器排汽白色烟羽问题，同时降低润滑油温度，提高凝结水温度，实现热量的回收。The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and to provide a multi-stage waste heat comprehensive utilization device and method in a power plant, which can eliminate the problem of white smoke plume from deaerator exhaust, reduce lubricating oil temperature, and improve Condensate water temperature to achieve heat recovery.
为达到上述目的，本发明所述的电厂多阶余热综合利用装置包括引风机凝结水管道、凝汽器、吸收式热泵吸收器、吸收式热泵冷凝器、机组低压加热器水侧管道、润滑油供油管道、润滑油供油三通阀、润滑油冷却器、吸收式热泵蒸发器、除氧器、除氧器排汽三通阀、除氧器排空管道、吸收式热泵发生器、膨胀阀及溶液热交换器；In order to achieve the above purpose, the multi-stage waste heat comprehensive utilization device of the power plant according to the present invention includes the induced draft fan condensate water pipeline, the condenser, the absorption heat pump absorber, the absorption heat pump condenser, the low pressure heater water side pipeline of the unit, and the lubricating oil. Oil supply pipeline, lubricating oil supply three-way valve, lubricating oil cooler, absorption heat pump evaporator, deaerator, deaerator exhaust three-way valve, deaerator emptying pipeline, absorption heat pump generator, expansion Valves and solution heat exchangers;
引风机凝结水管道的出口分为两路，其中一路与凝汽器相连通，另一路依次经吸收式热泵吸收器的吸热侧及吸收式热泵冷凝器的吸热侧与机组低压加热器水侧管道相连通；The outlet of the condensed water pipeline of the induced draft fan is divided into two paths, one of which is connected to the condenser, and the other is connected to the low-pressure heater water of the unit through the heat-absorbing side of the absorption heat pump absorber and the heat-absorbing side of the absorption heat pump condenser in turn. The side pipes are connected;
润滑油供油管道与润滑油供油三通阀的第一个开口相连通，润滑油供油三通阀的第二个开口与润滑油冷却器的入口相连通，润滑油供油三通阀的第三个开口经吸收式热泵蒸发器的放热侧与润滑油冷却器相连通，润滑油冷却器的出口与外界的汽轮机进油管道相连通；The lubricating oil supply pipeline is connected with the first opening of the lubricating oil supply three-way valve, the second opening of the lubricating oil supplying three-way valve is connected with the inlet of the lubricating oil cooler, and the lubricating oil supplying three-way valve is connected with the inlet of the lubricating oil cooler. The third opening of the absorbing heat pump evaporator is communicated with the lubricating oil cooler through the heat release side of the absorption heat pump evaporator, and the outlet of the lubricating oil cooler is communicated with the external steam turbine oil inlet pipeline;
除氧器的出口与除氧器排汽三通阀的第一个开口相连通，除氧器排汽三通阀的第二个开口与除氧器排空管道相连通，除氧器排汽三通阀的第三个开口经吸收式热泵发生器的放热侧与除氧器排空管道相连通；The outlet of the deaerator is communicated with the first opening of the deaerator exhaust three-way valve, and the second opening of the deaerator exhaust three-way valve is communicated with the deaerator exhaust pipe, and the deaerator exhausts steam. The third opening of the three-way valve is communicated with the deaerator emptying pipeline through the exothermic side of the absorption heat pump generator;
吸收式热泵发生器工质出口经吸收式热泵冷凝器的工质侧及膨胀阀与吸收式热泵蒸发器的工质侧相连通，吸收式热泵蒸发器的工质出口与吸收式热泵吸收器工质入口相连通；The working medium outlet of the absorption heat pump generator is connected with the working medium side of the absorption heat pump evaporator through the working medium side of the absorption heat pump condenser and the expansion valve, and the working medium outlet of the absorption heat pump evaporator is connected with the working medium of the absorption heat pump absorber. The quality entrance is connected;
吸收式热泵发生器的溶液出口经溶液热交换器的放热侧与吸收式热 泵吸收器的溶液入口相连通，吸收式热泵吸收器的溶液出口经溶液热交换器的吸热侧与吸收式热泵发生器的溶液入口相连通。The solution outlet of the absorption heat pump generator is connected to the solution inlet of the absorption heat pump absorber through the exothermic side of the solution heat exchanger, and the solution outlet of the absorption heat pump absorber is connected to the absorption heat pump through the heat absorption side of the solution heat exchanger. The solution inlets of the generator are connected.
引风机凝结水管道的出口经旁路截止阀与凝汽器相连通。The outlet of the condensed water pipeline of the induced draft fan is communicated with the condenser through the bypass shut-off valve.
引风机凝结水管道的出口经进口截止阀与吸收式热泵吸收器的吸热侧相连通。The outlet of the condensed water pipe of the induced draft fan is communicated with the heat absorption side of the absorption heat pump absorber through the inlet stop valve.
吸收式热泵冷凝器的吸热侧经出口截止阀与机组低压加热器水侧管道相连通。The heat absorption side of the absorption heat pump condenser is connected with the water side pipeline of the low pressure heater of the unit through the outlet stop valve.
吸收式热泵蒸发器的放热侧经润滑油供油截止阀与润滑油冷却器相连通。The heat release side of the absorption heat pump evaporator is communicated with the lubricating oil cooler through the lubricating oil supply cut-off valve.
吸收式热泵发生器的放热侧经除氧器排汽截止阀与除氧器排空管道相连通。The exothermic side of the absorption heat pump generator is communicated with the deaerator exhaust pipe through the deaerator exhaust stop valve.
吸收式热泵吸收器的溶液出口经溶液泵与溶液热交换器的吸热侧相连通。The solution outlet of the absorption heat pump absorber is communicated with the heat absorption side of the solution heat exchanger through the solution pump.
溶液热交换器的放热侧经减压阀与吸收式热泵吸收器的溶液入口相连通。The exothermic side of the solution heat exchanger is communicated with the solution inlet of the absorption heat pump absorber through a pressure reducing valve.
一种电厂多阶余热综合利用方法包括以下步骤：A method for comprehensive utilization of multi-stage waste heat in a power plant includes the following steps:
除氧器输出的蒸汽经除氧器排汽三通阀后进入到吸收式热泵发生器中放热降温，随后从排空管道排出；The steam output by the deaerator enters the absorption heat pump generator after passing through the deaerator exhaust three-way valve to release heat and cool down, and then is discharged from the exhaust pipe;
引风机凝结水管道输出的凝结水依次经吸收式热泵吸收器及吸收式热泵冷凝器加热后，再经出口截止阀进入到机组低压加热器水侧管道中；The condensed water output from the condensed water pipeline of the induced draft fan is heated by the absorption heat pump absorber and the absorption heat pump condenser in turn, and then enters the water side pipeline of the low pressure heater of the unit through the outlet stop valve;
润滑油供油管道输出的润滑油经润滑油供油三通阀后进入吸收式热泵蒸发器降温，再经润滑油冷却器进入到机组润滑油系统中；The lubricating oil output from the lubricating oil supply pipeline enters the absorption heat pump evaporator to cool down through the lubricating oil supply three-way valve, and then enters the lubricating oil system of the unit through the lubricating oil cooler;
当系统需要停运时，先关闭除氧器排汽三通阀的第三个开口，同时开启除氧器排汽三通阀的第二个开口，再关闭除氧器排汽截止阀，然后开启引风机凝结水旁路截止阀，关闭进口截止阀；开启润滑油供油三通阀的第二个开口，同时关闭润滑油供油三通阀的第三个开口，最后关闭润滑油供油截止阀；When the system needs to be shut down, first close the third opening of the deaerator exhaust three-way valve, open the second opening of the deaerator exhaust three-way valve, and then close the deaerator exhaust stop valve, and then Open the condensate bypass shut-off valve of the induced draft fan, close the inlet shut-off valve; open the second opening of the lubricating oil supply three-way valve, close the third opening of the lubricating oil supply three-way valve, and finally close the lubricating oil supply. Shut-off valve;
当装置因故障跳闸后，先关闭除氧器排汽三通阀的第三个开口，同时开启除氧器排汽三通阀的第二个开口，关闭除氧器排汽截止阀，开启引风机凝结水旁路截止阀，关闭进口截止阀，调节润滑油冷却器的参数，使得润滑油冷却器出口处的润滑油温度保持稳定。When the device trips due to a fault, first close the third opening of the deaerator exhaust three-way valve, open the second opening of the deaerator exhaust three-way valve, close the deaerator exhaust stop valve, and open the pilot valve. The fan condensate bypass shut-off valve, close the inlet shut-off valve, and adjust the parameters of the lubricating oil cooler to keep the lubricating oil temperature at the outlet of the lubricating oil cooler stable.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的电厂多阶余热综合利用装置及方法在具体操作时，采用除氧器排汽驱动吸收式热泵，对润滑油系统的高温回油热量进行回收，将获得的热量送至吸收式热泵吸收器及冷凝器中，对引风机凝结水进行加热，实现除氧器排汽与润滑油回油余热的回收利用，同时降低润滑油温度，减少冷却水系统的投用量，节约厂用电量，另外，除氧器的排汽释放热量降温凝结，以消除白色烟羽，结构简单，操作方便，实用性极强。In the specific operation of the multi-stage waste heat comprehensive utilization device and method of the power plant of the present invention, the deaerator exhaust steam is used to drive the absorption heat pump, the high temperature oil return heat of the lubricating oil system is recovered, and the obtained heat is sent to the absorption heat pump. In the heat pump absorber and condenser, the condensed water of the induced draft fan is heated to realize the recovery and utilization of the exhaust heat of the deaerator and the return oil of the lubricating oil, and at the same time reduce the temperature of the lubricating oil, reduce the consumption of the cooling water system, and save the power consumption of the plant. In addition, the exhaust steam of the deaerator releases heat to cool down and condense, so as to eliminate the white plume, the structure is simple, the operation is convenient, and the practicability is extremely strong.
图1为本发明的结构示意图。FIG. 1 is a schematic structural diagram of the present invention.
其中，1为凝汽器、2为除氧器、3为吸收式热泵发生器、4为吸收式热泵冷凝器、5为吸收式热泵蒸发器、6为吸收式热泵吸收器、7为溶液热交换器、8为润滑油冷却器、9为引风机凝结水旁路截止阀、10为 进口截止阀、11为出口截止阀、12为润滑油供油三通阀、13为润滑油供油截止阀、14为除氧器排汽三通阀、15为除氧器排汽截止阀、16为膨胀阀、17为减压阀、18为溶液泵。Among them, 1 is condenser, 2 is deaerator, 3 is absorption heat pump generator, 4 is absorption heat pump condenser, 5 is absorption heat pump evaporator, 6 is absorption heat pump absorber, 7 is solution heat Exchanger, 8 is the lubricating oil cooler, 9 is the condensate bypass shut-off valve of the induced draft fan, 10 is the inlet shut-off valve, 11 is the outlet shut-off valve, 12 is the lubricating oil supply three-way valve, and 13 is the lubricating oil supply shut-off valve Valve, 14 is the deaerator exhaust three-way valve, 15 is the deaerator exhaust stop valve, 16 is the expansion valve, 17 is the pressure reducing valve, and 18 is the solution pump.
下面结合附图对本发明做进一步详细描述：Below in conjunction with accompanying drawing, the present invention is described in further detail:
参考图1，本发明所述的电厂多阶余热综合利用装置包括凝结水管道、凝汽器1、吸收式热泵吸收器6、吸收式热泵冷凝器4、机组低压加热器水侧管道、润滑油供油管道、润滑油供油三通阀12、润滑油冷却器8、吸收式热泵蒸发器5、除氧器2、除氧器排汽三通阀14、除氧器排空管道、吸收式热泵发生器3、膨胀阀16及溶液热交换器7；引风机凝结水管道的出口分为两路，其中一路与凝汽器1相连通，另一路依次经吸收式热泵吸收器6的吸热侧及吸收式热泵冷凝器4的吸热侧与机组低压加热器水侧管道相连通；润滑油供油管道与润滑油供油三通阀12的第一个开口相连通，润滑油供油三通阀12的第二个开口与润滑油冷却器8的入口相连通，润滑油供油三通阀12的第三个开口经吸收式热泵蒸发器5的放热侧与润滑油冷却器8相连通，润滑油冷却器8的出口与外界的汽轮机进油管道相连通；除氧器2的出口与除氧器排汽三通阀14的第一个开口相连通，除氧器排汽三通阀14的第二个开口与除氧器排空管道相连通，除氧器排汽三通阀14的第三个开口经吸收式热泵发生器3的放热侧与除氧器排空管道相连通；吸收式热泵发生器3工质出口经吸收式热泵冷凝器4的工质侧及膨胀阀16与吸收式热泵蒸发器5的工质侧相连通，吸收式热泵蒸发器5的工质出口与吸收式热泵吸收器6的工质入口 相连通；吸收式热泵发生器3的溶液出口经溶液热交换器7的放热侧与吸收式热泵吸收器6的溶液入口相连通，吸收式热泵吸收器6的溶液出口经溶液热交换器7的吸热侧与吸收式热泵发生器3的溶液入口相连通。Referring to FIG. 1, the multi-stage waste heat comprehensive utilization device of the power plant according to the present invention includes a condensed water pipeline, a condenser 1, an absorption heat pump absorber 6, an absorption heat pump condenser 4, a low-pressure heater water side pipeline of the unit, and lubricating oil. Oil supply pipeline, lubricating oil supply three-way valve 12, lubricating oil cooler 8, absorption heat pump evaporator 5, deaerator 2, deaerator exhaust three-way valve 14, deaerator emptying pipeline, absorption type The heat pump generator 3, the expansion valve 16 and the solution heat exchanger 7; the outlet of the condensed water pipeline of the induced draft fan is divided into two paths, one of which is connected to the condenser 1, and the other is in turn passed through the absorption heat pump absorber 6 to absorb heat side and the heat absorption side of the absorption heat pump condenser 4 are connected with the water side pipeline of the low pressure heater of the unit; the lubricating oil supply pipeline is connected with the first opening of the lubricating oil supply three-way valve 12, and the lubricating oil supply three The second opening of the through valve 12 is connected to the inlet of the lubricating oil cooler 8, and the third opening of the lubricating oil supply three-way valve 12 is connected to the lubricating oil cooler 8 through the heat release side of the absorption heat pump evaporator 5 The outlet of the lubricating oil cooler 8 is communicated with the external steam turbine oil inlet pipeline; the outlet of the deaerator 2 is communicated with the first opening of the deaerator exhaust three-way valve 14, and the deaerator exhaust three-way The second opening of the valve 14 is connected with the deaerator emptying pipeline, and the third opening of the deaerator exhaust three-way valve 14 is connected with the deaerator emptying pipeline through the heat release side of the absorption heat pump generator 3 The outlet of the working medium of the absorption heat pump generator 3 is communicated with the working medium side of the absorption heat pump evaporator 5 through the working medium side of the absorption heat pump condenser 4 and the expansion valve 16, and the working medium outlet of the absorption heat pump evaporator 5 It is communicated with the working medium inlet of the absorption heat pump absorber 6; the solution outlet of the absorption heat pump generator 3 is communicated with the solution inlet of the absorption heat pump absorber 6 through the exothermic side of the solution heat exchanger 7, and the absorption heat pump absorbs The solution outlet of the generator 6 is communicated with the solution inlet of the absorption heat pump generator 3 through the heat absorption side of the solution heat exchanger 7 .
具体的，引风机凝结水管道的出口经引风机凝结水旁路截止阀9与凝汽器1相连通；凝结水管道的出口经进口截止阀10与吸收式热泵吸收器6的吸热侧相连通；吸收式热泵冷凝器4的吸热侧经出口截止阀11与机组低压加热器水侧管道相连通；吸收式热泵蒸发器5的放热侧经润滑油供油截止阀13与润滑油冷却器8相连通；吸收式热泵发生器3的放热侧经除氧器排汽截止阀15与除氧器排空管道相连通；吸收式热泵吸收器6的溶液出口经溶液泵18与溶液热交换器7的吸热侧相连通；溶液热交换器7的放热侧经减压阀17与吸收式热泵吸收器6的溶液入口相连通。Specifically, the outlet of the condensed water pipe of the induced draft fan is connected to the condenser 1 through the condensed water bypass cut-off valve 9 of the induced draft fan; The heat absorption side of the absorption heat pump condenser 4 is connected to the water side pipeline of the low pressure heater of the unit through the outlet cut-off valve 11; the heat release side of the absorption heat pump evaporator 5 is cooled with the lubricating oil through the lubricating oil supply cut-off valve 13 The heat release side of the absorption heat pump generator 3 is connected to the deaerator emptying pipeline through the deaerator exhaust stop valve 15; the solution outlet of the absorption heat pump absorber 6 is connected to the solution heat through the solution pump 18. The heat-absorbing side of the heat exchanger 7 is communicated with; the heat-releasing side of the solution heat exchanger 7 is communicated with the solution inlet of the absorption heat pump absorber 6 through the pressure reducing valve 17 .
本发明所述电厂多阶余热综合利用方法包括以下步骤：The multi-stage waste heat comprehensive utilization method of the power plant according to the present invention comprises the following steps:
除氧器2输出的蒸汽经除氧器排汽三通阀14后进入到吸收式热泵发生器3中放热降温，随后从排空管道排出，以消除白色烟羽；The steam output from the deaerator 2 enters the absorption heat pump generator 3 after passing through the deaerator exhaust three-way valve 14 to release heat and cool down, and then is discharged from the emptying pipeline to eliminate white plumes;
引风机凝结水管道输出的凝结水依次经吸收式热泵吸收器6及吸收式热泵冷凝器4加热后，再经出口截止阀11进入到机组低压加热器水侧管道中；The condensed water output by the induced draft fan condensate water pipeline is heated by the absorption heat pump absorber 6 and the absorption heat pump condenser 4 in turn, and then enters the water side pipeline of the low pressure heater of the unit through the outlet stop valve 11;
润滑油供油管道输出的润滑油经润滑油供油三通阀12后进入吸收式热泵蒸发器5降温，再经润滑油供油截止阀13及润滑油冷却器8，通往机组润滑油系统。The lubricating oil output from the lubricating oil supply pipeline enters the absorption heat pump evaporator 5 after passing through the lubricating oil supply three-way valve 12 to cool down, and then passes through the lubricating oil supply shut-off valve 13 and the lubricating oil cooler 8 to the lubricating oil system of the unit. .
另外，在运行过程中，可以通过调节润滑油冷却器8的参数，补充 调节润滑油冷却器8出口处润滑油的温度。In addition, during operation, the temperature of the lubricating oil at the outlet of the lubricating oil cooler 8 can be supplemented by adjusting the parameters of the lubricating oil cooler 8.
当系统需要停运时，依次停运除氧器2排汽、润滑油及引风机凝结水，具体的，先关闭除氧器排汽三通阀14的第三个开口，同时开启除氧器排汽三通阀14的第二个开口，再关闭除氧器排汽截止阀15，然后开启引风机凝结水旁路截止阀9，关闭进口截止阀10；开启润滑油供油三通阀12的第二个开口，同时关闭润滑油供油三通阀12的第三个开口，最后关闭润滑油供油截止阀13。When the system needs to be shut down, shut down the deaerator 2 exhaust steam, lubricating oil and condensed water of the induced draft fan in sequence. Specifically, first close the third opening of the deaerator exhaust three-way valve 14, and open the deaerator at the same time. The second opening of the exhaust three-way valve 14, then close the deaerator exhaust stop valve 15, then open the induced draft fan condensate bypass stop valve 9, close the inlet stop valve 10; open the lubricating oil supply three-way valve 12 At the same time, close the third opening of the lubricating oil supply three-way valve 12, and finally close the lubricating oil supply stop valve 13.
当装置因故障跳闸后，先关闭除氧器排汽三通阀14的第三个开口，同时开启除氧器排汽三通阀14的第二个开口，关闭除氧器排汽截止阀15，开启引风机凝结水旁路截止阀9，关闭进口截止阀10，调节润滑油冷却器8的参数，使得润滑油冷却器8出口处的润滑油温度保持稳定。When the device trips due to a fault, first close the third opening of the deaerator exhaust three-way valve 14, open the second opening of the deaerator exhaust three-way valve 14 at the same time, and close the deaerator exhaust stop valve 15 , open the condensate bypass shut-off valve 9 of the induced draft fan, close the inlet shut-off valve 10, and adjust the parameters of the lubricating oil cooler 8, so that the lubricating oil temperature at the outlet of the lubricating oil cooler 8 remains stable.
最后需要说明的是，本发明既可用于新建机组,也可用于现有机组改造，通过改变除氧器排汽三通阀14开度或辅助调整润滑油冷却器8，在机组正常运行或工况变化时均可稳定、安全运行。Finally, it should be noted that the present invention can be used for both newly-built units and existing units. By changing the opening degree of the deaerator exhaust three-way valve 14 or assisting in adjusting the lubricating oil cooler 8, the unit can be operated normally or at work. It can operate stably and safely when the conditions change.
Claims (9)
- 一种电厂多阶余热综合利用装置，其特征在于，包括引风机凝结水管道、凝汽器(1)、吸收式热泵吸收器(6)、吸收式热泵冷凝器(4)、机组低压加热器水侧管道、润滑油供油管道、润滑油供油三通阀(12)、润滑油冷却器(8)、吸收式热泵蒸发器(5)、除氧器(2)、除氧器排汽三通阀(14)、除氧器排空管道、吸收式热泵发生器(3)、膨胀阀(16)及溶液热交换器(7)；A multi-stage waste heat comprehensive utilization device in a power plant, characterized in that it comprises a condensed water pipeline of an induced draft fan, a condenser (1), an absorption heat pump absorber (6), an absorption heat pump condenser (4), and a unit low-pressure heater Water side pipeline, lubricating oil supply pipeline, lubricating oil supply three-way valve (12), lubricating oil cooler (8), absorption heat pump evaporator (5), deaerator (2), deaerator exhaust steam Three-way valve (14), deaerator emptying pipeline, absorption heat pump generator (3), expansion valve (16) and solution heat exchanger (7);引风机凝结水管道的出口分为两路，其中一路与凝汽器(1)相连通，另一路依次经吸收式热泵吸收器(6)的吸热侧及吸收式热泵冷凝器(4)的吸热侧与机组低压加热器水侧管道相连通；The outlet of the condensed water pipe of the induced draft fan is divided into two paths, one of which is connected to the condenser (1), and the other path passes through the heat absorption side of the absorption heat pump absorber (6) and the end of the absorption heat pump condenser (4) in turn. The heat absorption side is connected with the water side pipeline of the low pressure heater of the unit;润滑油供油管道与润滑油供油三通阀(12)的第一个开口相连通，润滑油供油三通阀(12)的第二个开口与润滑油冷却器(8)的入口相连通，润滑油供油三通阀(12)的第三个开口经吸收式热泵蒸发器(5)的放热侧与润滑油冷却器(8)相连通，润滑油冷却器(8)的出口与外界的汽轮机进油管道相连通；The lubricating oil supply pipeline is connected with the first opening of the lubricating oil supply three-way valve (12), and the second opening of the lubricating oil supply three-way valve (12) is connected with the inlet of the lubricating oil cooler (8) The third opening of the lubricating oil supply three-way valve (12) is communicated with the lubricating oil cooler (8) through the heat release side of the absorption heat pump evaporator (5), and the outlet of the lubricating oil cooler (8) Connected with the external steam turbine oil inlet pipeline;除氧器(2)排汽出口与除氧器排汽三通阀(14)的第一个开口相连通，除氧器排汽三通阀(14)的第二个开口与除氧器排空管道相连通，除氧器排汽三通阀(14)的第三个开口经吸收式热泵发生器(3)的放热侧与除氧器排空管道相连通；The exhaust outlet of the deaerator (2) is communicated with the first opening of the deaerator exhaust three-way valve (14), and the second opening of the deaerator exhaust three-way valve (14) is connected to the deaerator exhaust valve (14). The empty pipeline is connected, and the third opening of the deaerator exhaust three-way valve (14) is connected with the deaerator exhaust pipeline through the heat release side of the absorption heat pump generator (3);吸收式热泵发生器(3)工质出口经吸收式热泵冷凝器(4)的工质侧及膨胀阀(16)与吸收式热泵蒸发器(5)的工质侧相连通，吸收式热泵蒸发器(5)工质出口与吸收式热泵吸收器(6)的工质入口相连通；The outlet of the working medium of the absorption heat pump generator (3) is communicated with the working medium side of the absorption heat pump evaporator (5) through the working medium side of the absorption heat pump condenser (4) and the expansion valve (16), and the absorption heat pump evaporates The outlet of the working medium of the device (5) is communicated with the inlet of the working medium of the absorption heat pump absorber (6);吸收式热泵发生器(3)的溶液出口经溶液热交换器(7)的放热侧与吸收式热泵吸收器(6)的溶液入口相连通，吸收式热泵吸收器(6)的溶 液出口经溶液热交换器(7)的吸热侧与吸收式热泵发生器(3)的溶液入口相连通。The solution outlet of the absorption heat pump generator (3) is communicated with the solution inlet of the absorption heat pump absorber (6) through the exothermic side of the solution heat exchanger (7), and the solution outlet of the absorption heat pump absorber (6) is connected to the solution inlet of the absorption heat pump absorber (6). The heat absorption side of the solution heat exchanger (7) is communicated with the solution inlet of the absorption heat pump generator (3).
- 根据权利要求1所述的电厂多阶余热综合利用装置，其特征在于，引风机凝结水管道的出口经旁路截止阀(9)与凝汽器(1)相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 1, characterized in that the outlet of the condensed water pipeline of the induced draft fan is communicated with the condenser (1) through the bypass shut-off valve (9).
- 根据权利要求2所述的电厂多阶余热综合利用装置，其特征在于，引风机凝结水管道的出口经进口截止阀(10)与吸收式热泵吸收器(6)的吸热侧相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 2, characterized in that the outlet of the condensed water pipe of the induced draft fan is communicated with the heat absorption side of the absorption heat pump absorber (6) through the inlet shut-off valve (10).
- 根据权利要求3所述的电厂多阶余热综合利用装置，其特征在于，吸收式热泵冷凝器(4)的吸热侧经出口截止阀(11)与机组低压加热器水侧管道相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 3, characterized in that the heat absorption side of the absorption heat pump condenser (4) is connected to the water side pipeline of the low pressure heater of the unit through the outlet stop valve (11).
- 根据权利要求1所述的电厂多阶余热综合利用装置，其特征在于，吸收式热泵蒸发器(5)的放热侧经润滑油供油截止阀(13)与润滑油冷却器(8)相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 1, characterized in that the heat release side of the absorption heat pump evaporator (5) is connected to the lubricating oil cooler (8) through the lubricating oil supply shut-off valve (13). Pass.
- 根据权利要求1所述的电厂多阶余热综合利用装置，其特征在于，吸收式热泵发生器(3)的放热侧经除氧器排汽截止阀(15)与除氧器排空管道相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 1, characterized in that the heat release side of the absorption heat pump generator (3) is connected to the deaerator exhaust pipe through the deaerator exhaust stop valve (15) Pass.
- 根据权利要求1所述的电厂多阶余热综合利用装置，其特征在于，吸收式热泵吸收器(6)的溶液出口经溶液泵(18)与溶液热交换器(7)的吸热侧相连通。The multi-stage waste heat comprehensive utilization device in a power plant according to claim 1, characterized in that the solution outlet of the absorption heat pump absorber (6) is communicated with the heat absorption side of the solution heat exchanger (7) via the solution pump (18) .
- 根据权利要求1所述的电厂多阶余热综合利用装置，其特征在于，溶液热交换器(7)的放热侧经减压阀(17)与吸收式热泵吸收器(6)的溶液入口相连通。The device for comprehensive utilization of multi-stage waste heat in a power plant according to claim 1, characterized in that the exothermic side of the solution heat exchanger (7) is connected to the solution inlet of the absorption heat pump absorber (6) through a pressure reducing valve (17). Pass.
- 一种电厂多阶余热综合利用方法，其特征在于，基于权利要求4 所述的电厂多阶余热综合利用装置，包括以下步骤：A method for comprehensive utilization of multi-stage waste heat in a power plant, characterized in that, based on the device for comprehensive utilization of multi-stage waste heat in a power plant according to claim 4, comprising the following steps:除氧器(2)输出的蒸汽经除氧器排汽三通阀(14)后进入到吸收式热泵发生器(3)中放热降温，随后从排空管道排出；The steam output from the deaerator (2) enters the absorption heat pump generator (3) to release heat and cool down through the deaerator exhaust three-way valve (14), and is then discharged from the exhaust pipe;引风机凝结水管道输出的凝结水依次经吸收式热泵吸收器(6)及吸收式热泵冷凝器(4)加热后，再经出口截止阀(11)进入到机组低压加热器水侧管道中；The condensed water output from the condensed water pipeline of the induced draft fan is heated by the absorption heat pump absorber (6) and the absorption heat pump condenser (4) in turn, and then enters the water side pipeline of the low pressure heater of the unit through the outlet stop valve (11);润滑油供油管道输出的润滑油经润滑油供油三通阀(12)后进入吸收式热泵蒸发器(5)降温，再经润滑油冷却器(8)进入到机组润滑油系统中；The lubricating oil output from the lubricating oil supply pipeline enters the absorption heat pump evaporator (5) for cooling through the lubricating oil supply three-way valve (12), and then enters the lubricating oil system of the unit through the lubricating oil cooler (8);当系统需要停运时，先关闭除氧器排汽三通阀(14)的第三个开口，同时开启除氧器排汽三通阀(14)的第二个开口，再关闭除氧器排汽截止阀(15)，然后开启引风机凝结水旁路截止阀(9)，关闭进口截止阀(10)；开启润滑油供油三通阀(12)的第二个开口，同时关闭润滑油供油三通阀(12)的第三个开口，最后关闭润滑油供油截止阀(13)；When the system needs to be shut down, first close the third opening of the deaerator exhaust three-way valve (14), open the second opening of the deaerator exhaust three-way valve (14) at the same time, and then close the deaerator The exhaust stop valve (15), then open the induced draft fan condensate bypass stop valve (9), close the inlet stop valve (10); open the second opening of the lubricating oil supply three-way valve (12), and close the lubrication The third opening of the oil supply three-way valve (12), and finally close the lubricating oil supply stop valve (13);当装置因故障跳闸后，先关闭除氧器排汽三通阀(14)的第三个开口，同时开启除氧器排汽三通阀(14)的第二个开口，关闭除氧器排汽截止阀(15)，开启引风机凝结水旁路截止阀(9)，关闭进口截止阀(10)，调节润滑油冷却器(8)的参数，使得润滑油冷却器(8)出口处的润滑油温度保持稳定。When the device trips due to a fault, first close the third opening of the deaerator exhaust three-way valve (14), open the second opening of the deaerator exhaust three-way valve (14) at the same time, and close the deaerator exhaust valve (14). The steam shut-off valve (15), open the induced draft fan condensate bypass shut-off valve (9), close the inlet shut-off valve (10), and adjust the parameters of the lubricating oil cooler (8) so that the The lubricating oil temperature remains stable.
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| CN115573884A (en) * | 2022-10-22 | 2023-01-06 | 广东绿建联能源环境科技有限公司 | Novel air compressor machine waste heat recovery utilizes system |
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| CN112833382A (en) * | 2021-03-23 | 2021-05-25 | 西安热工研究院有限公司 | Multi-stage waste heat comprehensive utilization device and method for power plant |
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| CN214745672U (en) * | 2021-03-23 | 2021-11-16 | 西安热工研究院有限公司 | Multistage waste heat comprehensive utilization device of power plant |
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- 2021-03-23 CN CN202110309259.4A patent/CN112833382A/en active Pending
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