CN203704103U - Cascade heating system for heating network circulating water - Google Patents

Cascade heating system for heating network circulating water Download PDF

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Publication number
CN203704103U
CN203704103U CN201320885988.5U CN201320885988U CN203704103U CN 203704103 U CN203704103 U CN 203704103U CN 201320885988 U CN201320885988 U CN 201320885988U CN 203704103 U CN203704103 U CN 203704103U
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China
Prior art keywords
steam
communicated
water
exhaust
threeway
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CN201320885988.5U
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Chinese (zh)
Inventor
赵耀华
王新平
周岩
刘闯
卜江东
范勇
崔图林
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Co., Ltd of Chinese energy construction group Shanxi Electric Power Exploration & Design Institute
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Ceec Shanxi Electric Power Exploration & Design Institute
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Abstract

The utility model discloses a cascade heating system for heating network circulating water, which solves the technical problem that a heat pump is large in investment and small in recovery of steam exhaust in an existing heating system. The heating network circulating water is primarily heated by the steam exhaust in a preposed condenser and then entered into the heat pump; the heat pump is driven to absorb the waste heat of steam exhaust through a high-temperature steam for carrying out the secondary heating on the heating network circulating water; and then, the heating network circulating water is pressurized by a circulating water pump and then enters a steam-water heat exchanger, and thirdly heated by the high-temperature steam in the steam-water heat exchanger and then supplied for users. According to the cascade heating system, the cascade heat supply can be realized by a steam turbine, so that the coal consumption of a power plant can be greatly reduced, and the significant effects of energy saving and emission reduction can be realized.

Description

The step heating system of heat supply network recirculated water
Technical field
The present invention relates to a kind of by the device of heat supply network circulating water heating, particularly a kind of heat supply network circulating water heating system of passing through three grades of heating.
Background technology
At present, Direct-air-cooling Power Plants all adopts absorption heat pump to add the heating system of vapor-water heat exchanger.The waste heat that first heat supply network recirculated water reclaim in exhaust steam by heat pump heats, and after water circulating pump pressurization, enters vapor-water heat exchanger, is supplied with hot user after post bake.The recyclable exhaust steam residual heat of this system is used for heat supply, but does not make full use of the feature of Direct Air-cooled Unit heat supply network recirculated water return water temperature lower than exhaust steam temperature, has wasted thermal source.
Summary of the invention
The invention provides a kind of step heating system of heat supply network recirculated water, the heat pump that has solved existing heating system existence is invested large and the little technical problem of exhaust steam yield.
The present invention solves above technical problem by the following technical programs:
A kind of step heating system of heat supply network recirculated water, comprise hot user's water tank, preposition condenser, absorption heat pump, water circulating pump and vapor-water heat exchanger, the delivery port of hot user's water tank is communicated with the water inlet of preposition condenser, the delivery port of preposition condenser is communicated with the water inlet of absorption heat pump, the delivery port of absorption heat pump is communicated with the water inlet of vapor-water heat exchanger by water circulating pump, and the delivery port of vapor-water heat exchanger is communicated with the water inlet of hot user's water tank; The exhaust steam outlet of steam turbine is communicated with the first end of exhaust steam threeway, the second end of exhaust steam threeway is communicated with air radiator, the 3rd end of exhaust steam threeway is communicated with the first end of exhaust steam arm threeway, the second end of exhaust steam arm threeway is communicated with the steam ports that enters of preposition condenser, the venthole of preposition condenser is communicated with steam exhaust device, the 3rd end of exhaust steam arm threeway enters steam ports with first of absorption heat pump and is communicated with, and the first venthole of absorption heat pump is communicated with steam exhaust device; The steam (vapor) outlet of steam turbine is communicated with the first end of steam threeway, and the second end of steam threeway is communicated with the steam inlet of vapor-water heat exchanger, and the steam (vapor) outlet of vapor-water heat exchanger is communicated with steam exhaust device.
The 3rd end of steam threeway enters steam ports with second of absorption heat pump and is communicated with, and the second venthole of absorption heat pump is communicated with steam exhaust device.
The utility model is first by the heating of preposition condenser one-level, the heating of absorption heat pump secondary, finally supply with hot user after entering three grades of heating of vapor-water heat exchanger by heat supply network recirculated water backwater, to realize the heat supply of cascade utilization exhaust steam in steam turbine, the heat supply coal consumption that greatly reduces power plant, effects of energy saving and emission reduction is remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated:
A kind of step heating system of heat supply network recirculated water, comprise hot user's water tank 1, preposition condenser 2, absorption heat pump 3, water circulating pump 4 and vapor-water heat exchanger 5, the delivery port of hot user's water tank 1 is communicated with the water inlet of preposition condenser 2, the delivery port of preposition condenser 2 is communicated with the water inlet of absorption heat pump 3, the delivery port of absorption heat pump 3 is communicated with the water inlet of vapor-water heat exchanger 5 by water circulating pump 4, and the delivery port of vapor-water heat exchanger 5 is communicated with the water inlet of hot user's water tank 1; The exhaust steam outlet of steam turbine 6 is communicated with the first end of exhaust steam threeway 9, the second end of exhaust steam threeway 9 is communicated with air radiator 7, the 3rd end of exhaust steam threeway 9 is communicated with the first end of exhaust steam arm threeway 11, the second end of exhaust steam arm threeway 11 is communicated with the steam ports that enters of preposition condenser 2, the venthole of preposition condenser 2 is communicated with steam exhaust device 8, the 3rd end of exhaust steam arm threeway 11 enters steam ports with first of absorption heat pump 3 and is communicated with, and the first venthole of absorption heat pump 3 is communicated with steam exhaust device 8; The steam (vapor) outlet of steam turbine 6 is communicated with the first end of steam threeway 10, and the second end of steam threeway 10 is communicated with the steam inlet of vapor-water heat exchanger 5, and the steam (vapor) outlet of vapor-water heat exchanger 5 is communicated with steam exhaust device 8.
The 3rd end of steam threeway 10 enters steam ports with second of absorption heat pump 3 and is communicated with, and the second venthole of absorption heat pump 3 is communicated with steam exhaust device 8.
Heat supply network recirculated water enters heat pump after being heated for the first time by the exhaust steam in preposition condenser, under the driving of high-temperature steam, heat pump absorption exhaust steam residual heat heats for the second time to heat supply network recirculated water, afterwards, heat supply network recirculated water enters vapor-water heat exchanger after being recycled water pump pressurization, after being heated for the third time, supplies with hot user in vapor-water heat exchanger by high-temperature steam.Heat supply network recirculated water return water temperature is according to 45 ℃ of considerations; Winter main steam turbine exhaust pressure 15kPa, 54 ℃ of corresponding saturation temperatures.Heat supply network recirculated water can elevate the temperature 6 ℃ with exhaust steam direct heat transfer in preposition condenser, thereby realizes exhaust steam direct heating object.Especially in initial stage and latter stage of Heating Season, hot user requires very low general approximately 70 ℃ of left and right to supply water temperature, and the effect of preposition condenser is more obvious, as long as little high-temperature steam can meet for heat request, the heat supply coal consumption that greatly reduces power plant, effects of energy saving and emission reduction is remarkable.

Claims (2)

1. the step heating system of a heat supply network recirculated water, comprise hot user's water tank (1), preposition condenser (2), absorption heat pump (3), water circulating pump (4) and vapor-water heat exchanger (5), it is characterized in that, the delivery port of hot user's water tank (1) is communicated with the water inlet of preposition condenser (2), the delivery port of preposition condenser (2) is communicated with the water inlet of absorption heat pump (3), the delivery port of absorption heat pump (3) is communicated with the water inlet of vapor-water heat exchanger (5) by water circulating pump (4), the delivery port of vapor-water heat exchanger (5) is communicated with the water inlet of hot user's water tank (1), the exhaust steam outlet of steam turbine (6) is communicated with the first end of exhaust steam threeway (9), the second end of exhaust steam threeway (9) is communicated with air radiator (7), the 3rd end of exhaust steam threeway (9) is communicated with the first end of exhaust steam arm threeway (11), the second end of exhaust steam arm threeway (11) is communicated with the steam ports that enters of preposition condenser (2), the venthole of preposition condenser (2) is communicated with steam exhaust device (8), the 3rd end of exhaust steam arm threeway (11) enters steam ports with first of absorption heat pump (3) and is communicated with, the first venthole of absorption heat pump (3) is communicated with steam exhaust device (8), the steam (vapor) outlet of steam turbine (6) is communicated with the first end of steam threeway (10), and the second end of steam threeway (10) is communicated with the steam inlet of vapor-water heat exchanger (5), and the steam (vapor) outlet of vapor-water heat exchanger (5) is communicated with steam exhaust device (8).
2. the step heating system of a kind of heat supply network recirculated water according to claim 1, it is characterized in that, the 3rd end of steam threeway (10) enters steam ports with second of absorption heat pump (3) and is communicated with, and the second venthole of absorption heat pump (3) is communicated with steam exhaust device (8).
CN201320885988.5U 2013-12-31 2013-12-31 Cascade heating system for heating network circulating water Active CN203704103U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320885988.5U CN203704103U (en) 2013-12-31 2013-12-31 Cascade heating system for heating network circulating water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320885988.5U CN203704103U (en) 2013-12-31 2013-12-31 Cascade heating system for heating network circulating water

Publications (1)

Publication Number Publication Date
CN203704103U true CN203704103U (en) 2014-07-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759316A (en) * 2013-12-31 2014-04-30 中国能源建设集团山西省电力勘测设计院 Cascade heating system for heat supply network circulation water
WO2022097134A1 (en) * 2020-11-08 2022-05-12 N. A. M. Technology Ltd. Multi cascade heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759316A (en) * 2013-12-31 2014-04-30 中国能源建设集团山西省电力勘测设计院 Cascade heating system for heat supply network circulation water
WO2022097134A1 (en) * 2020-11-08 2022-05-12 N. A. M. Technology Ltd. Multi cascade heating system

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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 ENERGY ENGINEERING GROUP SHANXI ELECTRIC POW

Free format text: FORMER NAME: CEEC SHANXI ELECTRIC POWER EXPLORATION + DESIGN INSTITUTE

CP01 Change in the name or title of a patent holder

Address after: 030001 Yingze street, Shanxi, No. 255, No.

Patentee after: Co., Ltd of Chinese energy construction group Shanxi Electric Power Exploration & Design Institute

Address before: 030001 Yingze street, Shanxi, No. 255, No.

Patentee before: CEEC Shanxi Electric Power Exploration & Design Institute