CN202328570U - Chilled water system for central air-conditioning system - Google Patents
Chilled water system for central air-conditioning system Download PDFInfo
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- CN202328570U CN202328570U CN 201120495457 CN201120495457U CN202328570U CN 202328570 U CN202328570 U CN 202328570U CN 201120495457 CN201120495457 CN 201120495457 CN 201120495457 U CN201120495457 U CN 201120495457U CN 202328570 U CN202328570 U CN 202328570U
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- chilled water
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- circulating pump
- water circulating
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Abstract
The utility model relates to a chilled water system for a central air-conditioning system, which comprise a main air conditioner, a closed low-area chilled water circulating system and an open high-area chilled water circulating system, wherein the low-area chilled water circulating system comprises a low-area chilled water circulating pump and a low-area air-conditioner tail end; the high-area chilled water circulating system comprises a high-area water supply tank, a high-area chilled water circulating pump, a water turbine, a high-area return tank and a high-area expansion tank; chilled water in the main air conditioner is conveyed to the low-area air-conditioner tail end through the low-area chilled water circulating pump and is directly conveyed to the high-area return tank; low-temperature chilled water in the high-area return tank is directly conveyed to a high-area air-conditioner tail end through the high-area chilled water circulating pump; the high-area air-conditioner tail end is connected with the high-area expansion tank and is also connected with the high-area return tank through the water turbine; and the water turbine directly drives the high-area chilled water circulating pump. The chilled water system has the beneficial effects that the water turbine directly drives the high-area chilled water circulating pump, the input power of the high-area chilled water circulating pump is reduced, the potential energy of high-area chilled return water is effectively recovered, and the purposes of energy conversion and environment friendliness are realized.
Description
Technical field
The utility model is a kind of chilled water system that is used for central air conditioner system, and particularly a kind of chilled water system that is used for the skyscraper central air conditioner system belongs to the energy-conservation innovative technology of skyscraper central air conditioner system.
Background technology
The extensive use of modern high-rise building is had higher requirement to central air conditioner system; Because the maximal work pressure of ordinary central air-conditioner system generally is no more than 1.6MPa; For skyscraper; According in the pipe during permissible velocity of flow design chilled water circulatory system,, just need the form that customize high pressure-resistant equipment or adopt a plurality of partition systems if when system water static pressure and pump working pressure head sum surpass the withstand voltage of handpiece Water Chilling Units and parts.High pressure-resistant equipment costs an arm and a leg, and construction costs is high, but control is simple.Partition system generally has two kinds of forms: a kind of is the closed system that adopts the single air conditioning main frame, adopts water-water heat exchanger to transmit cold between each height subregion closed system, the problem that this will cause system energy consumption to increase.For example, adopt present heat exchange efficiency than higher plate type heat exchanger, heat transfer temperature difference also is difficult to reach in 2 ℃; According to national standard " heating and ventilation and air conditioning design specification " GB50019-2003 and relevant air-conditioner host parameter; Every increase by one cover heat exchanger, heat transfer temperature difference increases by 2 ℃ of meters, and the air-conditioner host energy consumption will increase 8%-10%; Because about 70% of air-conditioner host energy consumption duty adjusting system energy consumption certainly will increase a large amount of energy consumption expenditures like this.Another kind of partition system is that high low area adopts independently air-conditioner host system respectively, and this will cause construction costs high, and system's operational management disperses, and the building air conditioning total energy consumption increases.Therefore, the skyscraper central air-conditioning chilled water circulatory system that proposes a kind of energy-saving single main frame is all significant to skyscraper air conditioner energy saving, the operational management of simplifying system and control etc.
Summary of the invention
The purpose of the utility model is to consider the problems referred to above and the loss of a kind of minimizing supply backwater temperature difference, the chilled water system that is used for central air conditioner system of saving air conditioning energy consumption is provided.The utility model is reasonable in design, avoids system pressure to surpass the bearing capacity of common air-conditioning cold water main unit, other air-conditioning equipment, pipeline and pipeline valve.The utility model can reduce the input electric power of high district chilled water circulating pump, effectively reclaims the potential energy of the freezing backwater in high district, realizes the purpose of energy-conserving and environment-protective.
The technical scheme of the utility model is: the utility model is used for the chilled water system of central air conditioner system; Include air-conditioner host, low district's chilled water circulatory system and the high district chilled water circulatory system; The wherein low district chilled water circulatory system adopts the enclosed chilled water circulatory system; High district adopts the open type chilled water circulatory system; The wherein above-mentioned low district chilled water circulatory system includes low district chilled water circulating pump, low district air conditioning terminal; The high district chilled water circulatory system comprises high district supply tank, high district chilled water circulating pump, the hydraulic turbine, high district recovery tank, high district expansion tank, and wherein the cryogenic freezing water of air-conditioner host is delivered to low district's air conditioning terminal and directly carries paramount district supply tank through low district chilled water circulating pump, and the cryogenic freezing water in the high district supply tank is directly carried paramount district air conditioning terminal through high district chilled water circulating pump; High district air conditioning terminal is connected with high district expansion tank and is connected with high district recovery tank through the hydraulic turbine, and the hydraulic turbine directly drives high district chilled water circulating pump.
Above-mentioned high district supply tank is equipped with water-level control apparatus.
Also be equiped with check-valves between above-mentioned high district's chilled water circulating pump and the high district air conditioning terminal.
Also be equiped with between above-mentioned high district's chilled water circulating pump and the check-valves and be used to measure the high pressure sensor of distinguishing the outlet pressure of chilled water circulating pump, height district chilled water circulating pump being carried out FEEDBACK CONTROL.
The expansion tank of the above-mentioned high district low district of recovery tank double as water circulation system.
Also be equiped with motor-driven valve between the above-mentioned hydraulic turbine and the high district recovery tank.
Above-mentioned high district's supply tank and two water tanks of high district's recovery tank are installed in below the limiting altitude of low district chilled water circulatory system pressure-bearing.
The utility model is owing to adopt the partition system of single air conditioning main frame that chilled water directly is delivered to all high and low districts ends; Water-water heat exchanger between the cancellation height partition system; Therefore; Reduce the supply backwater temperature difference loss, saved air conditioning energy consumption, avoided system pressure to surpass the bearing capacity of common air-conditioning cold water main unit, other air-conditioning equipment, pipeline and pipeline valve simultaneously.The utility model can directly utilize air-conditioning system cryogenic freezing water effectively, has avoided the temperature rise that causes through heat exchanger, has improved the operational efficiency of air-conditioner host and system, and energy-saving effect is remarkable, meets energy-saving and cost-reducing environmental requirement.In addition, the utility model hydraulic turbine directly drives high district chilled water circulating pump, reduces the input electric power of high district chilled water circulating pump, effectively reclaims the potential energy of the freezing backwater in high district, realizes the purpose of energy-conserving and environment-protective.The chilled water system control control of the utility model is convenient, operation easily.The utility model is a kind of convenient and practical chilled water system that is used for the skyscraper central air conditioner system.
Description of drawings
Fig. 1 is the schematic diagram of the utility model system.
The specific embodiment
Embodiment:
The schematic diagram of the utility model system is as shown in Figure 1; The utility model is used for the chilled water system of skyscraper central air conditioner system; Include air-conditioner host 1, low district's chilled water circulatory system and the high district chilled water circulatory system; The wherein low district chilled water circulatory system adopts the enclosed chilled water circulatory system; High district adopts the open type chilled water circulatory system; The wherein above-mentioned low district chilled water circulatory system includes low district chilled water circulating pump (2), low district air conditioning terminal 3, and high district water circulation system comprises high district supply tank 4, high district chilled water circulating pump 6, the hydraulic turbine 10, high district recovery tank 12, high district expansion tank 13, and wherein the cryogenic freezing water of air-conditioner host 1 is delivered to low district air conditioning terminal 3 and directly carries paramount district supply tank 4 through low district chilled water circulating pump 2; Cryogenic freezing water in the high district supply tank 4 is directly carried paramount district air conditioning terminal 9 through high district chilled water circulating pump 6; High district air conditioning terminal 9 is connected with high district expansion tank 13 and is connected with high district recovery tank 12 through the hydraulic turbine 10, and the hydraulic turbine 10 directly drives height and distinguish chilled water circulating pump 6, and the reduction height is distinguished the input electric power of chilled water circulating pump 6; Effectively reclaim the potential energy of the freezing backwater in high district, realize the purpose of energy-conserving and environment-protective.
In the present embodiment, above-mentioned high district supply tank 4 also is equipped with water-level control apparatus 5.
In addition, also be equiped with check-valves 8 between above-mentioned high district's chilled water circulating pump 6 and the high district air conditioning terminal 9.
In the present embodiment, above-mentioned height is distinguished also to be equiped with between chilled water circulating pump 6 and the check-valves 8 and is used to measure the high pressure sensor 7 of distinguishing the outlet pressure of chilled water circulating pump 6, height district chilled water circulating pump 6 being carried out FEEDBACK CONTROL.
Above-mentioned high district air conditioning terminal 9 can be a fan coil, or the wind cabinet, or persuader, or terminal airhandling equipment.
In the present embodiment, the expansion tank of the above-mentioned high district low district of recovery tank 12 double as water circulation system.
In addition, also be equiped with motor-driven valve 11 between the above-mentioned hydraulic turbine 10 and the high district recovery tank 12.
In the present embodiment, above-mentioned high district's supply tank 4 and 12 two water tanks of high district's recovery tank are installed in below the limiting altitude of low district chilled water circulatory system pressure-bearing.
The utility model is used for the control method of the chilled water system of central air conditioner system, comprises following operation control step:
1) air-conditioner host 1, low district chilled water circulating pump 2, high district chilled water circulating pump 6, check-valves 8, the hydraulic turbine 10 are in opening, and system normally moves;
2) air conditioning water is transported to high district supply tank 4 from air-conditioner host 1 through low district chilled water circulating pump 2;
3) high district's chilled water circulating pump 6 operations are extracted chilled water from height district supply tank 4, are transported to high district air conditioning terminal 9;
4) height is distinguished chilled water after air conditioning terminal 9 heat exchange of too high district heat up, and is back to the hydraulic turbine 10 after gathering through return pipe, after promoting the hydraulic turbine 10 actings, passes through the paramount district of motor-driven valve 11 backflows recovery tank 12 again;
5) the high water of distinguishing recovery tank 12 is back to air-conditioner host 1 again.
Before the above-mentioned high district chilled water circulatory system is out of service, close motor-driven valve 11 earlier, stop chilled water circulating pump 6 operations of high district again.
Claims (7)
1. chilled water system that is used for central air conditioner system; Be characterised in that and include air-conditioner host (1), low district's chilled water circulatory system and the high district chilled water circulatory system; The wherein low district chilled water circulatory system adopts the enclosed chilled water circulatory system; High district adopts the open type chilled water circulatory system; The wherein above-mentioned low district chilled water circulatory system includes low district chilled water circulating pump (2), low district air conditioning terminal (3); The high district chilled water circulatory system comprises high district supply tank (4), high district chilled water circulating pump (6), the hydraulic turbine (10), high district recovery tank (12), high district expansion tank (13); Wherein the cryogenic freezing water of air-conditioner host (1) is delivered to low district's air conditioning terminal (3) and directly carries paramount district supply tank (4) through low district's chilled water circulating pump (2); Cryogenic freezing water in high district's supply tank (4) is directly carried paramount district air conditioning terminal (9) through high district's chilled water circulating pump (6), and high district's air conditioning terminal (9) is connected with high district's expansion tank (13) and is connected with high district's recovery tank (12) through the hydraulic turbine (10), and the hydraulic turbine (10) directly drives high district chilled water circulating pump (6).
2. the chilled water system that is used for central air conditioner system according to claim 1 is characterized in that above-mentioned high district's supply tank (4) is equipped with water-level control apparatus (5).
3. the chilled water system that is used for central air conditioner system according to claim 1 is characterized in that also being equiped with check-valves (8) between above-mentioned high district's chilled water circulating pump (6) and the high district's air conditioning terminal (9).
4. the chilled water system that is used for central air conditioner system according to claim 3 is characterized in that also being equiped with between above-mentioned high district chilled water circulating pump (6) and the check-valves (8) and is used to measure the high pressure sensor (7) of distinguishing the outlet pressure of chilled water circulating pump (6), height district chilled water circulating pump (6) being carried out FEEDBACK CONTROL.
5. the chilled water system that is used for central air conditioner system according to claim 1 is characterized in that the low expansion tank of distinguishing water circulation system of above-mentioned high district recovery tank (12) double as.
6. according to each described chilled water system that is used for central air conditioner system of claim 1 to 5, it is characterized in that also being equiped with motor-driven valve (11) between the above-mentioned hydraulic turbine (10) and the high district's recovery tank (12).
7. the chilled water system that is used for central air conditioner system according to claim 6 is characterized in that above-mentioned high district's supply tank (4) and (12) two water tanks of high district's recovery tank are installed in below the limiting altitude of low district chilled water circulatory system pressure-bearing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201120495457 CN202328570U (en) | 2011-12-02 | 2011-12-02 | Chilled water system for central air-conditioning system |
Applications Claiming Priority (1)
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CN 201120495457 CN202328570U (en) | 2011-12-02 | 2011-12-02 | Chilled water system for central air-conditioning system |
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CN202328570U true CN202328570U (en) | 2012-07-11 |
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CN 201120495457 Expired - Fee Related CN202328570U (en) | 2011-12-02 | 2011-12-02 | Chilled water system for central air-conditioning system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104567096A (en) * | 2013-10-21 | 2015-04-29 | 朱绍伟 | Heat exchange unit of water chilling and warming machine and operating method thereof |
-
2011
- 2011-12-02 CN CN 201120495457 patent/CN202328570U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104567096A (en) * | 2013-10-21 | 2015-04-29 | 朱绍伟 | Heat exchange unit of water chilling and warming machine and operating method thereof |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131202 |