CN105757760A - Heat supply network circulating water system applied in various combined driving modes - Google Patents
Heat supply network circulating water system applied in various combined driving modes Download PDFInfo
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- CN105757760A CN105757760A CN201610280518.4A CN201610280518A CN105757760A CN 105757760 A CN105757760 A CN 105757760A CN 201610280518 A CN201610280518 A CN 201610280518A CN 105757760 A CN105757760 A CN 105757760A
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- supply network
- heat supply
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- water circulating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- Thermal Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a heat supply network circulating water system applied in various combined driving modes.A steam-driven heat supply network circulating water pump with the heat supply network circulating water volume accounting for 50% of the capacity is arranged and dragged by a back pressure type small turbine, a steam source of the small turbine adopts heating steam extraction, and a back pressure type small turbine steam condenser is arranged.Meanwhile, an electric working frequency heat supply network circulating water pump with capacity of 50% and an electric variable frequency heat supply network circulating water pump with capacity of 50% are arranged at the same time.In the heat supply period, the steam-driven heat supply network circulating water pump with capacity of 50% runs under full loads, the electric circulating water pumps with capacity of 50% are adjusted in a variable frequency mode according to the heat supply network circulating water flow, and energy conservation and consumption reduction are achieved.
Description
Technical field
The present invention relates to the heat supply network circulation of one kind of multiple type of drive use in conjunction.
Background technology
In China's cold area, algid stage in winter, is longer, for reaching to save energy and reduce the cost, the purpose of safety and environmental protection, and the region many employings cogeneration units central heating of China's severe cold.Cogeneration units many employings heating is drawn gas after heating one secondary net heat supply network recirculated water, utilizes circulation pump of heat-supply network that heat supply network recirculated water is supplied to each heat exchange station in city, returns to cogeneration of heat and power enterprise after carrying out abundant heat exchange with secondary heat supply network.Therefore, in the process of whole heat supply network recirculated water cycle heat exchange, circulation pump of heat-supply network starts vital key role.For the cogeneration of heat and power enterprise bigger for thermal region, it is necessary to arrange multiple stage circulation pump of heat-supply network, increase, according to the actual flow of heat supply network recirculated water, the number of units that circulation pump of heat-supply network starts at any time.Substantial amounts of electronic circulation pump of heat-supply network consumes substantial amounts of station service at work, and therefore the economy design of circulation pump of heat-supply network is very important.
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding the heat supply network circulation of one kind of multiple type of drive use in conjunction so that it is have more the value in industry.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide the heat supply network circulation of a kind of rational in infrastructure, energy-saving and cost-reducing multiple type of drive use in conjunction.
The heat supply network circulation of the multiple type of drive use in conjunction of the present invention, including: high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and electromotor, the steam-operating water circulating pump being arranged in parallel, electric frequency conversion water circulating pump and heat exchangers for district heating, the air vent of medium pressure cylinder is connected to the air inlet of low pressure (LP) cylinder by air-pressure duct, described air-pressure duct is provided with mesolow cylinder communicating pipe valve, medium pressure cylinder connects steam-operating water circulating pump respectively, heat exchangers for district heating, the heat supply network backwater of heat supply network return water system inputs to heat exchangers for district heating respectively via steam-operating water circulating pump, electric frequency conversion water circulating pump, export to a heat supply network water system；
In the heat supply phase, steam-operating water circulating pump oepration at full load, regulate electric frequency conversion water circulating pump according to heat supply network circulating water flow variable frequency adjustment, reach heat supply network recirculated water flowing full amount.
Further, the electronic power frequency water circulating pump being arranged in parallel with steam-operating water circulating pump, electric frequency conversion water circulating pump is also included.
Further, described steam-operating water circulating pump connects condenser.
Further, the heat exchangers for district heating drain trap that described heat exchangers for district heating is connected also is included by drain water piping.
Further, described steam-operating water circulating pump is 50% capacity steam-operating water circulating pump, and described electric frequency conversion water circulating pump is 50% capacity electric frequency conversion water circulating pump, and described electronic power frequency water circulating pump is 50% capacity electric power frequency water circulating pump.
Further, described mesolow cylinder communicating pipe valve is electric butterfly valve.
By such scheme, the heat supply network circulation of the multiple type of drive use in conjunction of the present invention at least has the advantage that
1, one back pressure type small turbine is set and drags circulation pump of heat-supply network, substitute the electronic circulation pump of heat-supply network of former 50% capacity, save a large amount of station service, increase cogeneration of heat and power Business Economic Benefit.
2, draw gas from the heating of corresponding unit in back pressure type small turbine vapour source, arranges independent condenser for small steam turbine exhaust steam.
3, during heat supply, during heat supply, the steam drive circulation pump of heat-supply network oepration at full load of 50% capacity, according to the heat supply network circulating water flow electric drive water circulating pump with variable frequency adjustment 50% capacity, reach the purpose saved energy and reduce the cost.
4, arrange 50% capacity electric drive power frequency circulation pump of heat-supply network can when steam driven pump breaks down emergency use, it is ensured that the safety of heat supply network circulation.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heat supply network circulation of the multiple type of drive use in conjunction of the present invention；
High pressure cylinder 1, intermediate pressure cylinder 2, low pressure (LP) cylinder 3, electromotor 4, steam-operating water circulating pump 5, mesolow cylinder communicating pipe valve 7, steam-operating water circulating pump 8, heat exchangers for district heating 9, condenser 10, heat exchangers for district heating drain trap 11, electric frequency conversion water circulating pump 12, electronic power frequency water circulating pump 13.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in Figure 1, the heat supply network circulation of the multiple type of drive use in conjunction of the present embodiment, including: high pressure cylinder 1, intermediate pressure cylinder 2, low pressure (LP) cylinder 3 and electromotor 4, the steam-operating water circulating pump 8 being arranged in parallel, electric frequency conversion water circulating pump 12 and heat exchangers for district heating 9, the air vent of medium pressure cylinder is connected to the air inlet of low pressure (LP) cylinder by air-pressure duct, described air-pressure duct is provided with mesolow cylinder communicating pipe valve 7, medium pressure cylinder connects steam-operating water circulating pump respectively, heat exchangers for district heating, the heat supply network backwater of heat supply network return water system inputs to heat exchangers for district heating respectively via steam-operating water circulating pump, electric frequency conversion water circulating pump, export to a heat supply network water system.
In the heat supply phase, steam-operating water circulating pump oepration at full load, regulate electric frequency conversion water circulating pump according to heat supply network circulating water flow variable frequency adjustment, reach heat supply network recirculated water flowing full amount.
In the present embodiment, described steam-operating water circulating pump connects condenser 10.Steam is arranged from the height of main frame in the vapour source of back pressure type small turbine, matches back pressure type small steam turbine exhaust steam parameter and drains into main frame heating extraction line.
The present embodiment drives circulation pump of heat-supply network by arranging heat supply network quantity of circulating water 50% capacity steam, replaces original electric drive circulation pump of heat-supply network, reaches to save the purpose of a large amount of station service, increases electricity volume, increases economic benefit for cogeneration of heat and power enterprise.The New Cycle water pump arranged adopts back pressure type small turbine to drag, and back pressure type small turbine vapour source adopts main frame heating to draw gas, and the steam discharge for small turbine arranges independent condenser.The electric drive frequency conversion circulation pump of heat-supply network of one 50% capacity electric drive power frequency circulation pump of heat-supply network and 50% capacity is set simultaneously.During heat supply, the steam drive circulation pump of heat-supply network oepration at full load of 50% capacity, according to the heat supply network circulating water flow electric drive water circulating pump with variable frequency adjustment 50% capacity, reach the purpose saved energy and reduce the cost.The electric drive power frequency circulation pump of heat-supply network of 50% capacity can when pneumatic pump breaks down emergency use, it is ensured that the safety of heat supply network circulation.
Embodiment 2
The heat supply network circulation of the multiple type of drive use in conjunction of the present embodiment, on embodiment 1 basis, also includes the electronic power frequency water circulating pump 13 being arranged in parallel with steam-operating water circulating pump, electric frequency conversion water circulating pump.Can when steam-operating water circulating pump breaks down emergency use, it is ensured that the safety of heat supply network circulation.
In the various embodiments described above, also include the heat exchangers for district heating drain trap 11 that described heat exchangers for district heating is connected by drain water piping.
In the various embodiments described above, described mesolow cylinder communicating pipe valve be electric butterfly valve.
The above is only the preferred embodiment of the present invention; it is not limited to the present invention; should be understood that; for those skilled in the art; under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (6)
1. the heat supply network circulation of one kind of multiple type of drive use in conjunction, it is characterized in that, including: high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and electromotor, the steam-operating water circulating pump being arranged in parallel, electric frequency conversion water circulating pump and heat exchangers for district heating, the air vent of medium pressure cylinder is connected to the air inlet of low pressure (LP) cylinder by air-pressure duct, described air-pressure duct is provided with mesolow cylinder communicating pipe valve, medium pressure cylinder connects steam-operating water circulating pump respectively, heat exchangers for district heating, the heat supply network backwater of heat supply network return water system inputs to heat exchangers for district heating respectively via steam-operating water circulating pump, electric frequency conversion water circulating pump, export to a heat supply network water system；
In the heat supply phase, steam-operating water circulating pump oepration at full load, regulate electric frequency conversion water circulating pump according to heat supply network circulating water flow variable frequency adjustment, reach heat supply network recirculated water flowing full amount.
2. the heat supply network circulation of multiple type of drive use in conjunction according to claim 1, it is characterised in that also include the electronic power frequency water circulating pump being arranged in parallel with steam-operating water circulating pump, electric frequency conversion water circulating pump.
3. the heat supply network circulation of multiple type of drive use in conjunction according to claim 1, it is characterised in that described steam-operating water circulating pump connects condenser.
4. the heat supply network circulation of multiple type of drive use in conjunction according to claim 1, it is characterised in that also include the heat exchangers for district heating drain trap that described heat exchangers for district heating is connected by drain water piping.
5. the heat supply network circulation of multiple type of drive use in conjunction according to claim 2, it is characterized in that, described steam-operating water circulating pump is 50% capacity steam-operating water circulating pump, described electric frequency conversion water circulating pump is 50% capacity electric frequency conversion water circulating pump, and described electronic power frequency water circulating pump is 50% capacity electric power frequency water circulating pump.
6. the heat supply network circulation of multiple type of drive use in conjunction according to claim 1, it is characterised in that described mesolow cylinder communicating pipe valve be electric butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280518.4A CN105757760A (en) | 2016-04-29 | 2016-04-29 | Heat supply network circulating water system applied in various combined driving modes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610280518.4A CN105757760A (en) | 2016-04-29 | 2016-04-29 | Heat supply network circulating water system applied in various combined driving modes |
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| CN105757760A true CN105757760A (en) | 2016-07-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191232A (en) * | 2017-06-06 | 2017-09-22 | 大唐东北电力试验研究所有限公司 | Electric heating unit heating system |
| CN107401755A (en) * | 2017-08-02 | 2017-11-28 | 大唐东北电力试验研究所有限公司 | The energy conserving system of station boiler steam turbine |
| CN111637761A (en) * | 2020-05-19 | 2020-09-08 | 浙江浙能绍兴滨海热电有限责任公司 | Circulating water control system and operation adjusting method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107401755A (en) * | 2017-08-02 | 2017-11-28 | 大唐东北电力试验研究所有限公司 | The energy conserving system of station boiler steam turbine |
| CN111637761A (en) * | 2020-05-19 | 2020-09-08 | 浙江浙能绍兴滨海热电有限责任公司 | Circulating water control system and operation adjusting method thereof |
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Application publication date: 20160713 |
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