CN217763727U - Low-energy-consumption chilled water supply system for air conditioner - Google Patents
Low-energy-consumption chilled water supply system for air conditioner Download PDFInfo
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- CN217763727U CN217763727U CN202221825977.3U CN202221825977U CN217763727U CN 217763727 U CN217763727 U CN 217763727U CN 202221825977 U CN202221825977 U CN 202221825977U CN 217763727 U CN217763727 U CN 217763727U
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Abstract
The utility model discloses a low energy consumption air conditioner chilled water supply system, which is provided with a water chilling unit, a chilled water pump, a water separator, a plurality of air conditioner fan coil pipes and a water collector, wherein the chilled water pump comprises a low-region chilled water pump, a middle-region chilled water pump, a high-region chilled water pump and a standby chilled water pump, and the water separator comprises a low-region water separator, a middle-region water separator and a high-region water separator; the water inlet ends of the low-region freezing water pump, the middle-region freezing water pump, the high-region freezing water pump and the standby freezing water pump are connected with the water outlet end of the water chilling unit, the water outlet ends of the low-region freezing water pump, the middle-region freezing water pump and the high-region freezing water pump are respectively connected with the water inlet ends of the low-region water segregator, the middle-region water segregator and the high-region water segregator, and the water outlet end of the standby freezing water pump is respectively connected with the water outlet pipes of the low-region freezing water pump, the middle-region freezing water pump and the high-region freezing water pump through three branch pipes. The central air-conditioning chilled water system of the high-rise building is divided into high, medium and low-rise water supplies, so that the running efficiency of a chilled water pump is improved, and the energy consumption of equipment is reduced.
Description
Technical Field
The utility model relates to an energy-conserving technical field of air conditioner, concretely relates to low energy consumption air conditioner refrigerated water supply system.
Background
In the development process of society, people have higher and higher requirements on living and living environments, and a central air conditioner also becomes necessary public building equipment; however, under the condition that urban land is increasingly tense, the height of the building is continuously increased, the chilled water supply height of a central air conditioning system is also increased, the energy consumption of the system is increased, and energy-saving systems and products are also continuously available in the times of increasingly short energy sources.
At present, the chilled water supply of a central air conditioner in the environment of a high-rise building does not have high-low separate water supply, only one total water separator is provided, as shown in figure 1, the water supply pressure of a low floor does not need the water supply pressure as high as that of a high floor, the water supply pressure can be controlled only in a valve adjusting mode, however, the water supply pipeline can vibrate, the valve has large closure sound, serious influence is caused on living and office environment, and energy waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an overcome the not enough of above technique, provide a low energy consumption air conditioner refrigerated water supply system. The system divides the chilled water system of the central air conditioner of the high-rise building into high, middle and low floors for water supply, thereby improving the operating efficiency of the chilled water pump, reducing the energy consumption of the chilled water supply system and improving the operating environmental conditions.
The utility model discloses overcome the technical scheme that its technical problem adopted and be:
a low-energy-consumption air-conditioning chilled water supply system is sequentially provided with a water chilling unit, a chilled water pump, a water separator, a plurality of air-conditioning fan coils and a water collector along the water flow direction, wherein the chilled water pump comprises a low-region chilled water pump, a middle-region chilled water pump, a high-region chilled water pump and a standby chilled water pump, and the water separator comprises a low-region water separator, a middle-region water separator and a high-region water separator; the water inlet ends of the low-zone freezing water pump, the middle-zone freezing water pump, the high-zone freezing water pump and the standby freezing water pump are all connected with the water outlet end of the water chilling unit, the water outlet end of the low-zone freezing water pump is connected with the water inlet end of the low-zone water segregator, the water outlet end of the middle-zone freezing water pump is connected with the water inlet end of the middle-zone water segregator, the water outlet end of the high-zone freezing water pump is connected with the water inlet end of the high-zone water segregator, the water outlet end of the standby freezing water pump is respectively connected with the water outlet pipes of the low-zone freezing water pump, the middle-zone freezing water pump and the high-zone freezing water pump through three branch pipes, the water outlet ends of the low-zone water segregator, the middle-zone water segregator and the high-zone water segregator are respectively connected with the water inlet ends of the corresponding air-conditioning fan coil pipes, the water outlet ends of all the air-conditioning fan coil pipes are connected with the water collector, and the water outlet end of the water collector is connected with the water inlet end of the water chilling unit.
Furthermore, the water inlet ends of the low-region chilled water pump, the middle-region chilled water pump, the high-region chilled water pump and the standby chilled water pump are respectively provided with an inlet electric butterfly valve, and the water outlet ends are respectively provided with a check valve and an outlet electric butterfly valve in sequence along the water flow direction.
Furthermore, a Y-shaped filter is arranged between the check valve and the outlet electric butterfly valve.
Furthermore, a pressure gauge is arranged between the Y-shaped filter and the outlet electric butterfly valve.
Furthermore, the flow and the lift of the low-region chilled water pump, the middle-region chilled water pump, the high-region chilled water pump and the standby chilled water pump are determined by the load demand and the floor height, and the flow and the lift of the standby chilled water pump are not less than the flow and the lift of the high-region chilled water pump.
Furthermore, the water outlet ends of the low water separator, the middle water separator and the high water separator are provided with a regulating valve, a pressure gauge and a temperature display meter.
Furthermore, the water chiller is provided with a plurality of cooling units, and the number of the cooling units is in direct proportion to the cooling capacity requirement.
Furthermore, the water inlet end and the water outlet end of each water chilling unit are provided with regulating valves, and pressure gauges are arranged between the regulating valve at the water inlet end of each water chilling unit and the water chilling unit and between the regulating valves at the water outlet ends of the water chilling unit and the water chilling unit.
Furthermore, the water inlet end of the water collector is provided with an adjusting valve, a pressure gauge and a temperature display meter.
Furthermore, a bypass adjusting valve is arranged between the water collector and the water separator.
The beneficial effects of the utility model are that:
the utility model discloses a refrigerated water with high well low district separately, reduces the water supply flow and the lift of subregion to improve the operating efficiency of refrigerated water pump, reduce the energy consumption of refrigerated water supply system, improve the environmental condition of operation, have very big competitiveness under energy-concerving and environment-protective big environment, respond the energy saving and emission reduction policy of country.
Drawings
Fig. 1 is a schematic diagram of a conventional chilled water supply device for an air conditioner.
Fig. 2 is a schematic diagram of a chilled water supply system of a low energy consumption air conditioner according to an embodiment of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure, 1, a water chilling unit, 2, a freezing water pump, 2.1, a low-zone freezing water pump, 2.2, a middle-zone freezing water pump, 2.3, a high-zone freezing water pump, 2.4, a standby freezing water pump, 3, a water separator, 3.1, a low-zone water separator, 3.2, a middle-zone water separator, 3.3, a high-zone water separator, 4, an air-conditioning fan coil, 5, a water collector, 6, an inlet electric butterfly valve, 7, a check valve, 8, an outlet electric butterfly valve, 9, a Y-shaped filter, 10, a pressure gauge, 11, a regulating valve, 12, a temperature display meter, 13 and a bypass regulating valve.
Detailed Description
In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.
As shown in fig. 2 and fig. 3, the low energy consumption chilled water supply system for an air conditioner according to the present embodiment is sequentially provided with a water chilling unit 1, a chilled water pump 2, a water separator 3, a plurality of air conditioner fan coils 4, and a water collector 5 along a water flow direction.
The utility model discloses improve the biggest place in, frozen water pump 2 includes low zone frozen water pump 2.1, well district frozen water pump 2.2, high zone frozen water pump 2.3 and reserve frozen water pump 2.4, water knockout drum 3 includes low zone water knockout drum 3.1, well water knockout drum 3.2 and high zone water knockout drum 3.3. Specifically, the water inlet ends of the low-region chilled water pump 2.1, the middle-region chilled water pump 2.2, the high-region chilled water pump 2.3 and the standby chilled water pump 2.4 are all connected with the water outlet end of the water chilling unit 1, the low-region chilled water pump 2.1, the middle-region chilled water pump 2.2 and the high-region chilled water pump 2.3 are correspondingly connected with the low-region water separator 3.1, the middle-region water separator 3.2 and the high-region water separator 3.3, namely, the water outlet end of the low-region chilled water pump 2.1 is connected with the water inlet end of the low-region water separator 3.1, the water outlet end of the middle-region chilled water pump 2.2 is connected with the water inlet end of the middle-region water separator 3.2, and the water outlet end of the high-region chilled water pump 2.3 is connected with the water inlet end of the high-region water separator 3.3; the water outlet end of the standby chilled water pump 2.4 is respectively connected with the water outlet pipes of the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2 and the high-zone chilled water pump 2.3 through three branch pipes, namely, the standby chilled water pump 2.4 is ensured to be connected with any one of the water outlet pipes corresponding to the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2 and the high-zone chilled water pump 2.3, an outlet electric butterfly valve 8 is arranged on each water outlet pipe corresponding to the standby chilled water pump 2.4, the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2 and the high-zone chilled water pump 2.3 and used for correspondingly controlling the flow and the pressure of each water outlet pipe, and when any one of the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2 and the high-zone chilled water pump 2.3 is detected to be in failure through a DCS system, the standby chilled water pump 2.4 is controlled to be started and an electric valve corresponding to supply water. The water outlet ends of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are respectively connected to the water inlet ends of the corresponding air-conditioning fan coil pipes 4, the air-conditioning fan coil pipes 4 are generally installed in living or office buildings, the water outlet ends of all the air-conditioning fan coil pipes 4 are connected with the water inlet end of the water collector 5, and the water outlet end of the water collector 5 is connected with the water inlet end of the water chilling unit 1 to form a cycle.
Preferably, the water inlet ends of the low-region chilled water pump 2.1, the middle-region chilled water pump 2.2, the high-region chilled water pump 2.3 and the standby chilled water pump 2.4 are respectively provided with an inlet electric butterfly valve 6, and the water outlet ends are respectively provided with a check valve 7 and an outlet electric butterfly valve 8 in sequence along the water flow direction. Wherein, the inlet electric butterfly valve 6 is used for adjusting the water inflow of the chilled water pump 2 (namely, the low zone chilled water pump 2.1, the middle zone chilled water pump 2.2, the high zone chilled water pump 2.3 and the standby chilled water pump 2.4), and when the chilled water pump 2 fails, the inlet electric butterfly valve is used for cutting off the water inflow so as to overhaul; the check valve 7 is used for preventing the frozen water pump 2 from being damaged by water hammer when the frozen water pump 2 stops pumping, and simultaneously preventing the frozen water pump 2 from being reversed when the frozen water pump 2 does not run; the outlet electric butterfly valve 8 is used for controlling the water yield of water and cutting off the water when the chilled water pump 2 fails so as to overhaul.
Further, a Y-shaped filter 9 is arranged between the check valve 7 and the outlet electric butterfly valve 8, and the Y-shaped filter 9 is used for filtering impurities in water. Furthermore, a pressure gauge 10 is arranged between the Y-shaped filter 9 and the outlet electric butterfly valve 8, and the pressure gauge 10 is used for detecting the pressure of the water after being boosted by the chilled water pump 2.
In this embodiment, the flow and lift of the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2, the high-zone chilled water pump 2.3, and the backup chilled water pump 2.4 are determined by the load demand and the floor height. For example, if a building has 30 floors, each floor is 3 meters high, the high area is 21-30 floors, the middle area is 11-20 floors, the low area is 1-10 floors, and the cold energy required by each floor is the same, the demand of the chilled water in each area is consistent, and the demand is 100m 3 Thereby it is respectively for to obtain flow and lift of high district refrigerated water pump: 100m 3 90m (floor height) +10m (pipeline and equipment local resistance), the middle zone refrigerated water pump flow and the lift are: 100m 3 60m (floor height) +10m (pipeline and equipment local resistance), the flow and the lift of the low-region chilled water pump are: 100m 3 30m (floor height) +10m (pipeline)And local resistance of the device); this is only an example, the actual flow and lift needs to be calculated from the actual load conditions, and the local resistance of the piping and equipment is also verified from the actual conditions.
In addition, the flow and the lift of the standby chilled water pump 2.4 are selected according to the flow and the lift parameters of the three chilled water pumps, namely the low-region chilled water pump 2.1, the middle-region chilled water pump 2.2 and the high-region chilled water pump 2.3, the pump with the largest flow and the largest lift is selected, the standby chilled water pump 2.4 can meet the flow and the lift requirements of any one chilled water pump in the low-region, the middle-region and the high-region, namely the flow and the lift of the standby chilled water pump 2.4 are not less than the flow and the lift of the high-region chilled water pump 2.3. For example: flow and lift of high-zone chilled water pump 2.3: 100m 3 And 120m, the flow and lift of the middle area chilled water pump 2.2: 120m 3 And 80m, flow and lift of the low zone chilled water pump 2.1: 150m 3 And 50m, the spare chilled water pump 2.4 is selected as follows: 150m 3 And 120m; however, the standby chilled water pump 2.4 cannot operate for a long time, and the main pump (i.e., the low-zone chilled water pump 2.1, the middle-zone chilled water pump 2.2 or the high-zone chilled water pump 2.3) needs to be maintained and put into use as soon as possible, because the standby chilled water pump 2.4 operates in a deviated working condition, the efficiency is low, and the energy consumption is high.
Preferably, in this embodiment, the water outlet ends of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are all provided with an adjusting valve 11, a pressure gauge 10 and a temperature display meter 12, and the adjusting valves 11 arranged at the water outlet ends of the low water separator 3.1, the middle water separator 3.2 or the high water separator 3.3 are used for adjusting the flow entering the end air-conditioning fan coil 4 according to the actual conditions of the low zone, the middle zone or the high zone; the pressure gauge 10 at the water outlet end of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 is used for detecting the pressure of the water passing through the water separators; the temperature display meters 12 at the water outlet ends of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are used for detecting the temperature of the water passing through the water separators. In addition, the diameters and the lengths of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are different and are determined according to the flow and the pipe diameter of the water distribution pipe.
In this embodiment, the water chilling unit 1 is provided with a plurality of units, the number of the water chilling units 1 is generally configured according to the size of a building, the number of the water chilling units is in direct proportion to the cooling capacity requirement, and the larger the required cooling capacity is, the more the number of the units is configured. Preferably, the water inlet end and the water outlet end of each water chilling unit 1 are provided with regulating valves 11, and when the water chilling unit 1 needs to be overhauled or stopped, the regulating valves are respectively used for cutting off water inlet and water outlet for overhauling; pressure gauges 10 are arranged between the regulating valve 11 at the water inlet end of the water chilling unit 1 and between the water chilling unit 1 and the regulating valve 11 at the water outlet end of the water chilling unit 1, and are respectively used for detecting the pressure of the water inlet end and the pressure of the water outlet end of the water chilling unit 1.
In this embodiment, the water inlet end of the water collector 5 is preferably provided with a regulating valve 11, a pressure gauge 10 and a temperature display gauge 12.
In this embodiment, preferably, a bypass regulating valve 13 is disposed between the water collector 5 and the water separator 3, specifically, the water collector 5 and the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are all connected by the bypass regulating valve 13, the bypass regulating valve 13 is used for regulating the water volume and balancing the pressure of the system, when the air-conditioning fan coil 4 in any area of the low area, the middle area or the high area does not need as much chilled water, since the pressures of the low water separator 3.1, the middle water separator 3.2 and the high water separator 3.3 are all higher than the pressure of the water collector 5, the corresponding bypass regulating valve 13 is directly opened to make the chilled water flow back to the water collector 5.
The working principle of the low-energy-consumption air conditioner chilled water supply system is as follows:
after the chilled water comes out of the water chilling unit 1, the chilled water is boosted through a chilled water pump 2 (a low-region chilled water pump 2.1, a middle-region chilled water pump 2.2 and a high-region chilled water pump 2.3), then enters a low-region water separator 3.1, a middle-region water separator 3.2 and a high-region water separator 3.3, is regulated by a regulating valve 11 at the water outlet end of the low-region water separator 3.1, the middle-region water separator 3.2 and the high-region water separator 3.3 to enter a coil 4 of an air conditioner fan at the tail end to take away environmental heat, the temperature of the chilled water is increased, the chilled water in each region of low, middle and high is collected into a water collector 5 through a water return pipeline to balance the return water temperature of each region, then enters the water chilling unit 1 to reduce the temperature of the chilled water, and the water is circulated in a reciprocating manner; when the freezing water pump 2 is implemented, water supply pipelines of a low-region freezing water pump 2.1, a middle-region freezing water pump 2.2 and a high-region freezing water pump 2.3 in a low-region area and a middle-region area are directly connected into a corresponding low-region water separator 3.1, a middle-region water separator 3.2 and a high-region water separator 3.3, after the water separator 3 comes out, the freezing water is supplied to an air-conditioning fan coil 4 of a floor of the corresponding area through the water supply pipeline, in the figure 1, only one water supply pipe is drawn in each of the low-region area, the middle-region area and the high-region area, and in practice, the water supply pipes can be refined again according to functional areas or use time, for example, the same water supply pipe of a hotel needs air conditioner for 24 hours, the same root canal supplies water according to business time, the cold water can be stopped in non-business time periods, the freezing water pump 2 is regulated through frequency conversion, and the frequency converter is used for regulating the running frequency of the freezing water pump 2 after water supply is stopped in a part of the areas, so as to reduce the energy consumption of the system; in the initial design stage, the floor area is planned in place according to the operation time, so that the floor area is laid for the later operation management.
The utility model supplies water to the air-conditioning chilled water of high-rise buildings in different areas, reduces the water supply lift and flow of the chilled water pump 2 of partial areas, thereby achieving the purpose of energy conservation;
the foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.
Claims (10)
1. A low-energy-consumption air-conditioning chilled water supply system is sequentially provided with a water chilling unit (1), a chilled water pump (2), a water distributor (3), a plurality of air-conditioning fan coils (4) and a water collector (5) along a water flow direction, and is characterized in that the chilled water pump (2) comprises a low-region chilled water pump (2.1), a middle-region chilled water pump (2.2), a high-region chilled water pump (2.3) and a standby chilled water pump (2.4), and the water distributor (3) comprises a low-region water distributor (3.1), a middle-region water distributor (3.2) and a high-region water distributor (3.3); the water inlet ends of the low-zone freezing water pump (2.1), the middle-zone freezing water pump (2.2), the high-zone freezing water pump (2.3) and the standby freezing water pump (2.4) are all connected with the water outlet end of the water chilling unit (1), the water outlet end of the low-zone freezing water pump (2.1) is connected with the water inlet end of the low-zone water chiller (3.1), the water outlet end of the middle-zone freezing water pump (2.2) is connected with the water inlet end of the middle-zone water diverter (3.2), the water outlet end of the high-zone freezing water pump (2.3) is connected with the water inlet end of the high-zone water diverter (3.3), the water outlet end of the standby freezing water pump (2.4) is respectively connected with the water outlet pipes of the low-zone freezing water pump (2.1), the middle-zone freezing water pump (2.2) and the high-zone freezing water pump (2.3) through three branch pipes, the water outlet ends of the low-zone water diverter (3.1), the middle-zone water diverter (3.2) and the high-zone water diverter (3.3) are respectively connected with the water inlet end of the corresponding air conditioning fan (4), the water outlet ends of all the air conditioner coil pipes (5) are connected with the water outlet end of the water collector coil (5), and the water collector (5).
2. The low-energy-consumption air-conditioning chilled water supply system as claimed in claim 1, wherein the water inlet ends of the low-region chilled water pump (2.1), the middle-region chilled water pump (2.2), the high-region chilled water pump (2.3) and the standby chilled water pump (2.4) are respectively provided with an inlet electric butterfly valve (6), and the water outlet ends are respectively provided with a check valve (7) and an outlet electric butterfly valve (8) in sequence along the water flow direction.
3. A low energy consumption air-conditioning chilled water supply system according to claim 2, characterized in that a Y-shaped filter (9) is also arranged between the check valve (7) and the outlet electric butterfly valve (8).
4. A low energy consumption air-conditioning chilled water supply system according to claim 3, characterized in that a pressure gauge (10) is arranged between the Y-shaped filter (9) and the outlet electric butterfly valve (8).
5. A low energy consumption air-conditioning chilled water supply system according to claim 1, characterized in that the flow and lift of the low-zone chilled water pump (2.1), the middle-zone chilled water pump (2.2), the high-zone chilled water pump (2.3) and the backup chilled water pump (2.4) are determined by the load demand and the floor height, and the flow and lift of the backup chilled water pump (2.4) are not less than the flow and lift of the high-zone chilled water pump (2.3).
6. A low energy consumption air-conditioning chilled water supply system according to claim 1, characterized in that the water outlet ends of the low water separator (3.1), the middle water separator (3.2) and the high water separator (3.3) are provided with a regulating valve (11), a pressure gauge (10) and a temperature display meter (12).
7. A low energy consumption air-conditioning chilled water supply system according to claim 1, wherein the chiller (1) is provided with a number of units, the number of which is proportional to the cooling demand.
8. The low-energy-consumption air-conditioning chilled water supply system according to claim 7, wherein the water inlet end and the water outlet end of each water chilling unit (1) are provided with regulating valves (11), and pressure gauges (10) are arranged between the regulating valve (11) at the water inlet end of the water chilling unit (1) and between the water chilling unit (1) and the regulating valve (11) at the water outlet end of the water chilling unit (1).
9. A low energy consumption air-conditioning chilled water supply system according to claim 1, characterized in that the water inlet end of the water collector (5) is provided with a regulating valve (11), a pressure gauge (10) and a temperature display meter (12).
10. A low energy consumption air-conditioning chilled water supply system according to any one of claims 1-9, characterized in that a bypass regulating valve (13) is arranged between the water collector (5) and the water separator (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221825977.3U CN217763727U (en) | 2022-07-14 | 2022-07-14 | Low-energy-consumption chilled water supply system for air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221825977.3U CN217763727U (en) | 2022-07-14 | 2022-07-14 | Low-energy-consumption chilled water supply system for air conditioner |
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| CN202221825977.3U Active CN217763727U (en) | 2022-07-14 | 2022-07-14 | Low-energy-consumption chilled water supply system for air conditioner |
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