CN-224230203-U - Cold and hot combined supply type power plant air conditioning system

CN224230203UCN 224230203 UCN224230203 UCN 224230203UCN-224230203-U

Abstract

The utility model discloses an air conditioning system of a cold and hot combined power plant, which comprises an air-cooled heat pump type cold/hot water unit, a steam-water heat exchanger, a chilled water circulating pump, a hot water circulating pump, a chilled water separator, a chilled water collector, a hot water separator, a hot water collector, electric switch valves F1-F5, a chilled water pipeline and a hot water pipeline, wherein one part of the air-cooled heat pump type cold/hot water unit is connected with the chilled water separator, the chilled water collector and the chilled water circulating pump through the chilled water pipeline, the other part of the air-cooled heat pump type cold/hot water unit is connected with the hot water separator, the hot water collector and the hot water circulating pump through the hot water pipeline, the steam-water heat exchanger is connected to the air-cooled heat pump type cold/hot water unit in parallel, and the electric switch valves F1-F5 are respectively arranged on water supply sides of the air-cooled heat pump type cold/hot water unit and the steam-water heat exchanger. The utility model realizes the parallel working mechanism of cooling and heating of the air conditioning system, reduces the initial investment and the running cost of the air conditioning system, and improves the comprehensive energy efficiency of the air conditioning system.

Inventors

BAI YANG
YIN YUQIANG
DING PING
Liu Jingkan
CAO MINGHAO
ZHOU FASHAN
ZHANG ZUHUI
ZHANG ZHEN
PAN WEIWEI
WEI HAI

Assignees

中国能源建设集团浙江省电力设计院有限公司
国家能源集团浙江电力有限公司

Dates

Publication Date: 20260512
Application Date: 20250506

Claims (10)

1. The cold and hot combined supply type power plant air conditioning system is characterized by comprising an air cooling heat pump type cold/hot water unit (1), a steam-water heat exchanger (2), a chilled water circulating pump (3), a hot water circulating pump (4), a chilled water separator (7), a chilled water collector (8), a hot water separator (9) and a hot water collector (10), and further comprising electric switch valves F1-F5, a chilled water pipeline and a hot water pipeline; The air-cooled heat pump type cold/hot water unit (1) is provided with a plurality of cold water pipelines or hot water pipelines which are respectively connected in parallel, one part of the air-cooled heat pump type cold/hot water unit (1) is connected with the cold water separator (7), the cold water collector (8) and the cold water circulating pump (3) through the cold water pipelines, and the other part of the air-cooled heat pump type cold/hot water unit (1) is connected with the hot water separator (9), the hot water collector (10) and the hot water circulating pump (4) through the hot water pipelines; The steam-water heat exchanger (2) is connected in parallel to the air-cooled heat pump type cold/hot water unit (1) and is used for a standby heat source; the electric switch valves F1-F5 are respectively arranged on the water supply sides of the air-cooled heat pump type cold/hot water unit (1) and the steam-water heat exchanger (2) and are used for switching the operation modes of the system.
2. The combined cooling and heating power plant air conditioning system according to claim 1, wherein the chilled water pipeline and the hot water pipeline are all arranged in a four-pipe system, the chilled water pipeline at least comprises a chilled water supply main pipe and a chilled water return main pipe, and the hot water pipeline at least comprises a hot water supply main pipe and a hot water return main pipe.
3. The cold-hot combined power plant air conditioning system according to claim 2, wherein the chilled water separator (7) and the chilled water collector (8) are respectively arranged at a cold supply user end, the chilled water separator (7) is connected to the air-cooled heat pump type cold/hot water unit (1) through the chilled water supply main pipe, the air-cooled heat pump type cold/hot water unit (1) is connected to the chilled water collector (8) through the chilled water return main pipe, and the chilled water circulation pump (3) is in one-to-one correspondence with each air-cooled heat pump type cold/hot water unit (1) and is connected in parallel to the chilled water return main pipe.
4. The cold and hot combined power plant air conditioning system according to claim 2, wherein the hot water separator (9) and the hot water collector (10) are respectively arranged at a heat supply user end, the hot water separator (9) is connected to the air-cooled heat pump type cold/hot water unit (1) through the hot water supply main pipe, the air-cooled heat pump type cold/hot water unit (1) is connected to the hot water collector (10) through the hot water return main pipe, and the hot water circulating pump (4) is in one-to-one correspondence with the air-cooled heat pump type cold/hot water unit (1) connected to the hot water supply main pipe in parallel and is connected to the hot water return main pipe in parallel.
5. The cold and hot combined power plant air conditioning system according to claim 2, further comprising a full-automatic water filter (6), wherein the full-automatic water filter (6) is provided with two groups, and is respectively arranged on the chilled water return main pipe and the hot water return main pipe, the full-automatic water filter (6) arranged on the chilled water return main pipe is connected between the chilled water collector (8) and the chilled water circulating pump (3), and the full-automatic water filter (6) arranged on the hot water return main pipe is connected between the hot water collector (10) and the hot water circulating pump (4).
6. The cold and hot combined power plant air conditioning system according to claim 5, further comprising an automatic constant pressure water supplementing unit (5), wherein the automatic constant pressure water supplementing unit (5) is provided with two groups, one group is connected to the chilled water return main pipe and is connected between the full-automatic water filter (6) and the chilled water collector (8), and the other group is connected to the hot water return main pipe and is connected between the full-automatic water filter (6) and the hot water collector (10).
7. The cold and hot combined power plant air conditioning system according to claim 2, further comprising a first temperature sensor (11) and a second temperature sensor (12), wherein the first temperature sensor (11) is arranged on a chilled water return main pipe of the chilled water collector (8) for monitoring the chilled water return temperature in real time, and the second temperature sensor (12) is arranged on a hot water return main pipe of the hot water collector (10) for monitoring the hot water return temperature in real time.
8. The cold and hot combined power plant air conditioning system according to claim 1, wherein the steam-water heat exchanger (2) is used as a standby heat source under the working condition that the outdoor temperature is too low or the air-cooled heat pump type cold/hot water unit (1) cannot normally supply heat, a power plant steam heat source is adopted as a heat source of the steam-water heat exchanger (2), the heat source is connected through a steam pipeline, and condensed water generated after heat exchange of the steam-water heat exchanger (2) is discharged to a power plant reclaimed water system through a condensed water pipeline.
9. The combined cooling and heating power plant air conditioning system of claim 1, comprising four modes of operation: the first operation mode is that under the first working condition of the first operation mode, the air-cooled heat pump type cold/hot water unit (1) only supplies cold; The second operation mode is that under the second operation mode working condition, the air-cooled heat pump type cold/hot water unit (1) only supplies heat; The air-cooled heat pump type cold/hot water unit (1) supplies cold and heat at the same time under the working condition of the third operation mode; And in the fourth operation mode, under the working condition of the operation mode, the steam-water heat exchanger (2) supplies heat independently.
10. The cold and hot combined power plant air conditioning system according to claim 9, wherein in the first operation mode, the air-cooled heat pump type cold/hot water unit (1) and the chilled water circulation pump (3) are operated, the electric switching valves F1, F2 and F4 are opened, and the electric switching valves F3 and F5 are closed; in the second operation mode, the air-cooled heat pump type cold/hot water unit (1) and the hot water circulating pump (4) which are connected with the hot water supply main pipe in parallel are operated, the electric switch valves F3 and F4 are opened, and the electric switch valves F1, F2 and F5 are closed; In the third operation mode, the air-cooled heat pump type cold/hot water unit (1), the chilled water circulating pump (3) and the hot water circulating pump (4) operate, the electric switch valves F1 and F4 are opened, the electric switch valve F5 is closed, and the electric switch valves F2 and F3 are opened or closed; In the fourth operation mode, the steam-water heat exchanger (2) and the hot water circulating pump (4) are operated, the electric switch valve F5 is opened, and the electric switch valves F1, F2, F3 and F4 are closed.

Description

Cold and hot combined supply type power plant air conditioning system Technical Field The utility model relates to the technical field of air conditioners, in particular to a cold and hot combined power plant air conditioning system. Background The electric power industry is the basic energy industry of national economy, the thermal power generation is still the main power generation mode in China at present, and the future development space is still wide. The safe, stable and efficient operation of the air conditioning system is important to the temperature and humidity environment of important equipment of a power plant. The equipment in the power plant has a plurality of rooms, the equipment in part of the machine rooms has large heat productivity, and the annual refrigeration requirement exists, and the temperature and humidity requirements on the places such as personnel office areas and the like in the factory are different from those of the equipment rooms. The two-pipe air conditioning system constructed by the traditional common water chilling unit and the heat pump unit can only meet single cooling or heating requirements, is difficult to meet the building air conditioning requirements with cooling and heating loads at the same time, and has great limitation in application. Disclosure of utility model The air conditioning system for the cold and hot combined power plant, which is provided by the utility model, is energy-saving, efficient, safe and reliable, and simultaneously meets the requirements of cold and heat supply, and can at least solve one of the technical problems. In order to solve the technical problems, the utility model adopts the following technical scheme: An air conditioning system of a cold and hot combined power plant comprises an air-cooled heat pump type cold/hot water unit, a steam-water heat exchanger, a chilled water circulating pump, a hot water circulating pump, a chilled water separator, a chilled water collector, a hot water separator and a hot water collector, and further comprises electric switch valves F1-F5, a chilled water pipeline and a hot water pipeline; The air-cooled heat pump type cold/hot water unit is provided with a plurality of cold/hot water pipelines which are respectively connected in parallel to the chilled water pipelines, one part of the air-cooled heat pump type cold/hot water unit is connected with the chilled water separator, the chilled water collector and the chilled water circulating pump through the chilled water pipelines, and the other part of the air-cooled heat pump type cold/hot water unit is connected with the hot water separator, the hot water collector and the hot water circulating pump through the hot water pipelines; The steam-water heat exchanger is connected in parallel to the air-cooled heat pump type cold/hot water unit and is used as a standby heat source; The electric switch valves F1-F5 are respectively arranged on the water supply sides of the air-cooled heat pump type cold/hot water unit and the steam-water heat exchanger and are used for switching the operation modes of the system. Further, the chilled water pipeline and the hot water pipeline are all arranged in a four-pipe mode, the chilled water pipeline at least comprises a chilled water supply main pipe and a chilled water return main pipe, and the hot water pipeline at least comprises a hot water supply main pipe and a hot water return main pipe. Further, the chilled water separator and the chilled water collector are respectively arranged at the cold supply user end, the chilled water separator is connected to the air-cooled heat pump type cold/hot water unit through the chilled water supply main pipe, the air-cooled heat pump type cold/hot water unit is connected to the chilled water collector through the chilled water return main pipe, and the chilled water circulation pump is provided with a plurality of chilled water circulation pumps, is respectively in one-to-one correspondence with the air-cooled heat pump type cold/hot water units, and is connected to the chilled water return main pipe in parallel. Further, the hot water separator and the hot water collector are respectively arranged at a heat supply user end, the hot water separator is connected to the air-cooled heat pump type cold/hot water unit through the hot water supply main pipe, the air-cooled heat pump type cold/hot water unit is connected to the hot water collector through the hot water return main pipe, and the hot water circulating pump is provided with a plurality of air-cooled heat pump type cold/hot water units which are respectively connected to the hot water supply main pipe in parallel and are in one-to-one correspondence with the hot water return main pipe in parallel. Further, the water treatment device also comprises a full-automatic water filter, wherein the full-automatic water filter is provided with two groups, is respectively arranged on the frozen water return main pipe and the h