CN204041244U - One utilizes balance of power plant cooling water backwater waste heat natural gas system - Google Patents
One utilizes balance of power plant cooling water backwater waste heat natural gas system Download PDFInfo
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- CN204041244U CN204041244U CN201420439834.8U CN201420439834U CN204041244U CN 204041244 U CN204041244 U CN 204041244U CN 201420439834 U CN201420439834 U CN 201420439834U CN 204041244 U CN204041244 U CN 204041244U
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Abstract
The utility model discloses one and utilize balance of power plant cooling water backwater waste heat natural gas system, mainly comprise hot water/heat exchange gas device, hot water feeding pipe road, cold-water return pipeline, Natural gas pipeline system, suction booster, hot water in described hot water feeding pipe road is from balance of power plant cooling water return water system, and the ducted cold water of described cold-water return enters balance of power plant cooling water return water system again.What the utility model adopted is the used heat of balance of power plant cooling water return water system hot water, the temperature that the rock gas heating low temperature requires to combustion engine, and when can avoid high-temperature heating, combustion engine is caused danger.Achieve recycling of the cooling water in water supply line and water return pipeline simultaneously.Have employed two circuits in parallel, the independence of the every bar circuit of system is strengthened, is convenient to later period maintenance.
Description
Technical field
The utility model relates to a kind of combustion engine Thermal Power Engineering technical field, and the loop heating system Middle combustion engine power plant especially relating to a kind of rock gas utilizes the loop heating system of the joint heat recovery of cooling water backwater waste heat rock gas.
Background technique
Rock gas GTCC power plant has certain requirement due to the parameter of the preposition module of gas turbine to rock gas, therefore the rock gas from receiving station can not be directly utilized to generate electricity, voltage regulating station need designed between, the rock gas of upstream steam line is carried out pressure regulation, temperature adjustment, to meet the parameter request of the preposition module inlet of gas turbine.When natural gas temperature is lower than combustion engine, voltage regulating station domestic demand designs corresponding heating unit and heats rock gas.
In current China's natural gas power station, the scheme of heated natural gas mainly contains electric heater heating, water heating in salt bath furnace, steam heating, boiler feed water heating, boiler exhaust gas heat five kinds.
Electric heater heat protocol: use electric heater to heat, conceptual design is simple, and rate of heating is fast, can at short notice by gas-heated to the temperature needed, but the flow that heats of electric heater is all less so far; The charging operation of electric heater own has the danger that set off an explosion; And operation energy consumption is the highest, need to consume a large amount of electric energy, this makes power plant's power consumption significantly raise, and will reduce the economic benefit of power plant in the long run.
Water-bath stove heat protocol: water heating in salt bath furnace applies maximum heat protocol in Natural Gas Power Plant.It, by the temperature of gas-firing heating water, is utilizing the temperature of water heated natural gas.Water-bath stove heated natural gas effective, system run all right.But water-bath stove need consume a large amount of rock gases and waste very much, i.e. the not energy utilizing rock gas carefully, again in vain consume a large amount of rock gases.Water-bath stove is arranged in voltage regulating station, needs igniting to run, just in case gas leakage probably causes blast, so its Security merits attention.
Steam heating scheme: steam heating is by extracting steam heating rock gas from the extraction opening of steam turbine and steam-expelling port.But increase extraction line and equipment will make power plant thermal system complicated, have impact, and energy consumption be larger on the operation of host computer system.
Boiler feed water heat protocol: one section of publication number is the application for a patent for invention of CN103644032A, disclose pressure feedwater cascade utilization heated natural gas system in a kind of GTCC power plant exhaust heat boiler, this system utilizes the feedwater entering boiler, arrange two-stage series connection hot water/heat exchange gas device, series winding heats the rock gas entered in preposition module and voltage regulating station in two steps.The program is compared with water-bath stove heat protocol can save a large amount of rock gases, but arranges two-stage series connection heat exchange equipment, and feedwater piping length is very long, system resistance is caused to increase, water supply pump motor power increases, and pipeline material increases, and initial cost and station service energy consumption increase.
Boiler exhaust gas heat protocol: one section of publication number is the application for a patent for invention of CN103628985A, disclose a kind of GTCC power plant exhaust heat boiler and utilize waste-heat natural gas system, this system arranges afterbody heat exchanger at boiler tail, utilize the smoke evacuation of boiler, heating intermediary water, then gas heater is entered after being boosted by suction booster by intermediary water, the rock gas in heating voltage regulating station.The program is compared with water-bath stove heat protocol can save a large amount of rock gases; But by boiler, a coil heat exchanger must be set at afterbody, and a hot water/heat exchange gas device equipment, arrange two suction boosters simultaneously, thus cause system complex, reliability reduces; Not only initial cost is large, and operation expense improves, and station service energy consumption increases.
For prior art Problems existing, the utility model proposes one and utilize balance of power plant cooling water backwater waste heat rock gas scheme: both can meet combustion engine gas temperature requirement, low grade heat energy can be recycled by step again; This system is simple, and operating cost is low, and reliability is high; Be conducive to reducing initial cost, energy-saving and emission-reduction, protection of the environment.
Summary of the invention
Order of the present utility model is the existing problems in order to solve such scheme, proposes a kind of environmental protection and energy saving heating system utilizing balance of power plant cooling water backwater waste heat rock gas.Both can meet combustion engine gas temperature requirement, low grade heat energy can have been recycled by step again.This system is simple and reliable, and operating cost is low, is conducive to reducing initial cost, energy-saving and emission-reduction, protection of the environment.
The technical problems to be solved in the utility model realizes by the following technical solutions:
One utilizes balance of power plant cooling water backwater waste heat natural gas system, comprise: two hot water/heat exchange gas devices 1, hot water feeding pipe road 2, cold-water return pipeline 3, rock gas admission line 4, rock gas outlet pipe 5, suction booster 6, described hot water feeding pipe road 2 connects balance of power plant cooling water return water system and hot water/heat exchange gas device 1, cold-water return pipeline 3 connects hot water/heat exchange gas device 1 and balance of power plant cooling water return water system, the side of hot water/heat exchange gas device 1 connects rock gas admission line 4, hot water/heat exchange gas device 1 opposite side connects rock gas outlet pipe 5, hot water feeding pipe road 2 is provided with suction booster 10, described two hot water/heat exchange gas device 1 is connected in parallel.
Alternately, above-mentioned one utilizes balance of power plant cooling water backwater waste heat natural gas system, described hot water feeding pipe road 2, cold-water return pipeline 3, rock gas admission line 4, rock gas outlet pipe 5 is three-way pipeline, described hot water feeding pipe road 2 is arranged in parallel two water pipe hot water separating valves 7, described cold-water return pipeline 3 is arranged in parallel two return pipe water isolation valve 8, described rock gas admission line 4 is arranged in parallel two rock gas air inlet separating valves 9, described rock gas outlet pipe 5 is arranged in parallel two rock gases to give vent to anger separating valve 10.
Alternately, above-mentioned one utilizes balance of power plant cooling water backwater waste heat natural gas system, is provided with suction booster inlet isolation valve 11 before described suction booster 6.
Alternately, above-mentioned one utilizes balance of power plant cooling water backwater waste heat natural gas system, and described water pipe hot water separating valve 7, rock gas air inlet separating valve 9 are electronic shape pattern separating valve.
Alternately, above-mentioned one utilizes balance of power plant cooling water backwater waste heat natural gas system, and the female pipe 12 of Operation system setting balance of power plant cooling water backwater, described female pipe 12 is connected with hot water feeding pipe road 2, cold-water return pipeline 3 respectively.
Alternately, above-mentioned one utilizes balance of power plant cooling water backwater waste heat natural gas system, hot water in described hot water feeding pipe road 2 is from balance of power plant cooling water return water system, carry out heat exchange with rock gas to be heated in hot water/heat exchange gas device 1 after, become cold water and enter balance of power plant cooling water backwater system by described cold-water return pipeline 3.
Compared with prior art, the beneficial effects of the utility model:
1, the used heat coming from balance of power plant cooling water return water system hot water can be utilized, enter hot water/heat exchange gas device by water supply line, the temperature that the rock gas heating low temperature requires to combustion engine, avoid combustion engine to cause danger.
2, because hot water, cold water come from balance of power plant cooling water return water system completely, recycling of the cooling water in water supply line and water return pipeline is therefore achieved.
3, owing to utilizing the used heat of balance of power plant cooling water return water system hot water, achieve low grade heat energy comprehensive reutilization, energy saving is higher.
4, because water is as heat transferring medium, compare electric heater heat protocol, water-bath stove heat protocol, steam heating scheme, Security is higher.Compare with water-bath stove heat protocol, electric heater heat protocol, steam heating scheme, boiler feed water heat protocol, boiler exhaust gas heat protocol, system simplifies greatly, and reliability improves greatly; Initial cost significantly reduces; Save the rock gas needed for water-bath stove heat protocol; Save the station service that electric heater heat protocol is used.
5, the utility model is conducive to the initial cost reducing whole system, and reduce and run power consumption, and realize energy-saving and emission-reduction, protection of the environment, environmental benefit is remarkable.
6, due to employing is two circuits, can disposablely heat a large amount of rock gases simultaneously.Every bar circuit adopts form in parallel, and every bar circuit can work alone.When a certain bar circuit breaks down, only need close related valve, this faulty line be overhauled, the work of All other routes can not be affected.
Accompanying drawing explanation
Fig. 1 is that one utilizes balance of power plant cooling water backwater waste heat natural gas system structural representation;
Fig. 2 is that one utilizes balance of power plant cooling water backwater waste heat natural gas system scheme two structural representation.
Wherein: 1 be hot water/heat exchange gas device, 2 be hot water feeding pipe road, 3 be cold-water return pipeline, 4 be rock gas admission line, 5 be rock gas outlet pipe, 6 be suction booster, 7 be water pipe hot water separating valve, 8 be return pipe water isolation valve, 9 be rock gas air inlet separating valve, 10 be suction booster inlet isolation valve, 12 manage for balance of power plant cooling water backwater is female for rock gas separating valve, 11 of giving vent to anger.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
All features disclosed in this specification, or the step in disclosed all methods or process, except the speciality mutually repelled and/or step, all can combine by any way, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object, namely, unless specifically stated otherwise, an embodiment in a series of equivalence of each feature or similar characteristics.
One utilizes balance of power plant cooling water backwater waste heat natural gas system, mainly comprise hot water/heat exchange gas device, hot water feeding pipe road, cold-water return pipeline, Natural gas pipeline system, suction booster, hot water in described hot water feeding pipe road is from balance of power plant cooling water return water system, and the ducted cold water of described cold-water return enters balance of power plant cooling water return water system.Wherein balance of power plant is the abbreviation of power plant's accessory machinery, is a general term, comprises a lot of equipment.Such as 1, vapour condenser.2, oil cooler.3, other accessory machinery, wherein has vacuum pump, closed loop cooler etc.These supplementary equipment are in operation needs a certain amount of low-temperature cooling water to be taken away by the heat of generation, and takes the cooling water backwater of heat out of, enters again cool cycles next time, or directly emit after water cools by ordinary circumstance meeting operation technique means again.And the heat that these cooling water backwater have is not high due to temperature, all slattern as low-grade used heat.And these Waste Heat Reuse get up by the present invention just, in order to heated natural gas.
Below in conjunction with accompanying drawing and engineering construction example, the invention will be further described.
As shown in Figure 1, one utilizes balance of power plant cooling water backwater waste heat natural gas system, comprising: two hot water/heat exchange gas devices 1, when needs heat a large amount of rock gas simultaneously, two hot water/heat exchange gas devices, also can run one, another is for subsequent use; Article one, enter the hot water feeding pipe road 2 of hot water/heat exchange gas device 1; Pipeline 2 is provided with a suction booster 6 on house steward; Suction booster inlet isolation valve 11 is provided with before suction booster 6; Hot water pipeline 2 is provided with heat exchanger entrance separating valve 7 on the arm entering each hot water/heat exchange gas device 1; Article one, from the cold-water return pipeline 3 that hot water/heat exchange gas device 1 picks out; The electronic adjustable insulating valve 8 of cold-water return pipe is provided with at cold-water return pipeline 3 arm picked out from each hot water/heat exchange gas device 1; Article one, enter the rock gas admission line 4 of hot water/heat exchange gas device 1, every root arm is provided with rock gas air inlet motor-operated isolation valve 9; Article one, from the rock gas outlet pipe 5 that hot water/heat exchange gas device 1 picks out, every root arm is provided with rock gas and gives vent to anger separating valve 10; In described hot water feeding pipe road, temperature is that the hot water of 24 ~ 30 DEG C enters hot water feeding pipe road 2 from balance of power plant, first after suction booster supercharging, enter hot water/heat exchange gas device again used heat is passed to rock gas to complete heat exchange, natural gas temperature is heated to 7 DEG C by-6 DEG C, and the water temperature after heat exchange is down to 10 ~ 16 DEG C, then enters balance of power plant cooling water return water system by cold-water return pipeline 3 and enter and circulate next time.
As shown in Figure 2, the second technological scheme, the female pipe 12 of a balance of power plant cooling water backwater is set in systems in which, described female pipe 12 is connected with hot water feeding pipe road 2, cold-water return pipeline 3 respectively, hot water feeding pipe road 2 from it above connect and draw hot water, enter female pipe 12 again by cold-water return pipeline 3 after described hot water and rock gas carry out heat exchange, enter and circulate next time.
Hot water feeding pipe road is provided with the motor-operated isolation valve of adjustable pattern, and its aperture regulates according to the temperature of rock gas, to control the water yield size entering hot water/heat exchange gas device, guarantees the temperature of the rock gas picked out from hot water/heat exchange gas device.
Higher in weather temperature, in particularly summer, rock gas does not need heating directly to go combustion engine to use.Now, only need close water pipe hot water separating valve, allow the hot water (cooling water after cooling subsidiary engine equipment) from subsidiary engine equipment directly be flowed out by female pipe 12, do not enter hot water/heat exchange gas device.
Also can a bypass line be set on natural gas line, bypass line be arranged a normally close valve.When not needing heated by natural gas, only need close rock gas air inlet separating valve, opening normally close valve on branch road, make rock gas without hot water/heat exchange gas device, directly enter combustion engine by bypass line.
Because heated natural gas utilizes the cooling water with used heat, but not special equipment, such as, by special heat hot water such as boilers.So, rock gas do not need heating time, directly can close water pipe hot water separating valve, and need not process boiler do not use for a long time or dry combustion method produce incrustation scale, the problem of corrosion.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. one kind utilizes balance of power plant cooling water backwater waste heat natural gas system, comprise: two hot water/heat exchange gas devices (1), hot water feeding pipe road (2), cold-water return pipeline (3), rock gas admission line (4), rock gas outlet pipe (5), suction booster (6), it is characterized in that: described hot water feeding pipe road (2) connects balance of power plant cooling water return water system and hot water/heat exchange gas device (1), cold-water return pipeline (3) connects hot water/heat exchange gas device (1) and balance of power plant cooling water return water system, the side of hot water/heat exchange gas device (1) connects rock gas admission line (4), hot water/heat exchange gas device (1) opposite side connects rock gas outlet pipe (5), hot water feeding pipe road (2) are provided with suction booster (10), described two hot water/heat exchange gas device (1) is connected in parallel.
2. one as claimed in claim 1 utilizes balance of power plant cooling water backwater waste heat natural gas system, it is characterized in that: described hot water feeding pipe road (2), cold-water return pipeline (3), rock gas admission line (4), rock gas outlet pipe (5) is three-way pipeline, described hot water feeding pipe road (2) is arranged in parallel two water pipe hot water separating valves (7), described cold-water return pipeline (3) is arranged in parallel two return pipe water isolation valve (8), described rock gas admission line (4) is arranged in parallel two rock gas air inlet separating valves (9), described rock gas outlet pipe (5) is arranged in parallel two rock gases to give vent to anger separating valve (10).
3. one as claimed in claim 1 or 2 utilizes balance of power plant cooling water backwater waste heat natural gas system, it is characterized in that: described suction booster (6) is front is provided with suction booster inlet isolation valve (11).
4. one as claimed in claim 2 utilizes balance of power plant cooling water backwater waste heat natural gas system, it is characterized in that: described water pipe hot water separating valve (7), rock gas air inlet separating valve (9) are electronic shape pattern separating valve.
5. one as claimed in claim 1 or 2 utilizes balance of power plant cooling water backwater waste heat natural gas system, it is characterized in that: Operation system setting has balance of power plant cooling water backwater mother's pipe (12), described mother's pipe (12) is connected with hot water feeding pipe road (2), cold-water return pipeline (3) respectively.
6. one as claimed in claim 1 utilizes balance of power plant cooling water backwater waste heat natural gas system, it is characterized in that: the hot water in described hot water feeding pipe road (2) is from balance of power plant cooling water return water system, carry out heat exchange with rock gas to be heated in hot water/heat exchange gas device (1) after, become cold water and enter balance of power plant cooling water backwater system by described cold-water return pipeline (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439834.8U CN204041244U (en) | 2014-08-06 | 2014-08-06 | One utilizes balance of power plant cooling water backwater waste heat natural gas system |
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| CN201420439834.8U CN204041244U (en) | 2014-08-06 | 2014-08-06 | One utilizes balance of power plant cooling water backwater waste heat natural gas system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644678A (en) * | 2017-01-23 | 2017-05-10 | 北京华科仪科技股份有限公司 | Method and apparatus for measuring power plant water degassed cation conductivity |
| CN107829832A (en) * | 2017-11-16 | 2018-03-23 | 大连派思燃气系统股份有限公司 | Circulation bypath system for performance heater |
-
2014
- 2014-08-06 CN CN201420439834.8U patent/CN204041244U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644678A (en) * | 2017-01-23 | 2017-05-10 | 北京华科仪科技股份有限公司 | Method and apparatus for measuring power plant water degassed cation conductivity |
| CN107829832A (en) * | 2017-11-16 | 2018-03-23 | 大连派思燃气系统股份有限公司 | Circulation bypath system for performance heater |
| CN107829832B (en) * | 2017-11-16 | 2023-07-07 | 大连派思燃气设备有限公司 | Circulation bypass system for performance heater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST Free format text: FORMER NAME: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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| CP01 | Change in the name or title of a patent holder |
Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |