CN113531698A - Single-pipe air conditioner terminal equipment chilled water connecting pipe pipeline - Google Patents
Single-pipe air conditioner terminal equipment chilled water connecting pipe pipeline Download PDFInfo
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- CN113531698A CN113531698A CN202011086944.7A CN202011086944A CN113531698A CN 113531698 A CN113531698 A CN 113531698A CN 202011086944 A CN202011086944 A CN 202011086944A CN 113531698 A CN113531698 A CN 113531698A
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- Prior art keywords
- chilled water
- pipe
- main pipe
- air conditioner
- water return
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a chilled water connecting pipe pipeline of single-pipe air conditioner terminal equipment.A chilled water supply branch pipe on the air conditioner terminal equipment is communicated with a chilled water return main pipe, and a self-operated differential pressure balance valve and a dynamic balance electric two-way valve are sequentially communicated and connected on the chilled water supply branch pipe from the chilled water return main pipe to the air conditioner terminal equipment; the chilled water return branch pipes on the air conditioner tail end equipment are connected with the chilled water return main pipe after being connected with the static balance valve in series. The temperature of the water return main pipe is higher than that of the water supply main pipe, and the air conditioner tail end equipment and the air which are connected out of the water return main pipe are not easy to condense due to heat exchange, so that the water return main pipe is suitable for an electrical equipment room sensitive to condensed water; the single-pipe connection method can slightly improve the temperature of the return water main pipe, so that the energy efficiency of the water chilling unit is partially improved; the increased total load of the water chilling unit can be mutually offset with the peak load designed by the system, so that more water chilling units can run in a full-load high-efficiency state.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a chilled water connecting pipe pipeline of single-pipe air conditioner terminal equipment.
Background
The centralized air-conditioning chilled water system is a chilled water system which is used for intensively preparing air-conditioning chilled water, sending the air-conditioning chilled water to the tail end equipment of a room or a regional air conditioner and bearing corresponding air-conditioning load. The centralized air-conditioning water system is characterized in that: the cold source devices are arranged in a centralized mode, and air conditioner chilled water generated by the cold source devices is conveyed into the tail end equipment of the air conditioning area through the water pump and the corresponding pipeline to refrigerate the air conditioning area. According to the water flow of the air-conditioning terminal equipment, the system can be divided into a same-course system and a different-course system. According to the characteristics of water pressure, there are divided into an open system and a closed system.
According to the arrangement mode of the cold and hot pipelines, the system can be divided into a two-pipe system, a three-pipe system and a four-pipe system. According to the characteristics of the water flow at the end user side, the system can be divided into a fixed flow system and a variable flow system. The three-pipe and four-pipe system is used for the occasions of simultaneous use of cooling and heating, and for the occasions of only cooling, only two common-use pipe systems can be selected. The two-pipe air-conditioning freezing water pipe consists of a water supply and return main pipe, a main pipe and branch pipes. Each water supply and return branch pipe is connected with the air conditioner terminal device, the water supply branch pipe is connected from the water supply main pipe, and the return branch pipe is connected from the return main pipe to form a parallel loop, so that the water supply temperature of the terminal device is the same. In order to ensure the water quantity of each end device, besides the selection of a proper pipe diameter, the reasonable arrangement of the trend of each loop is very important. Only when the designed water resistance is approximately equal, the parallel branches can obtain respective basic designed water quantity according to the design requirement, so that the cold quantity required by design can be provided for the end device. The two-pipe refrigeration chilled water connecting pipe is the only default method of the concentrated air conditioner chilled water connecting pipe in the cold supply occasion at present, and the technical method and the like are very mature. However, the double-pipe system has some characteristics, and it is not convenient enough to be used in some occasions, if the air conditioner end equipment is added locally, the flow of the chilled water of the double-pipe system will increase, the flow of the water pump and the water chilling unit equipment in the pipe network will also increase, the parameter change may cause equipment replacement, and the cost is too high. In addition, the water supply temperature of the air conditioner terminal equipment with the double pipes connected in parallel is the same, the temperature is low, and the air conditioner terminal equipment is not suitable for occasions with high requirement on the water supply temperature, such as electric rooms sensitive to condensed water.
In summary, in the situation where the air conditioner terminal needs to be increased locally, the design capacity of the whole air conditioner water system is often required to be increased; in the places where the condensed water is sensitive, other more complex forms are often adopted, which brings inconvenience to design and use.
Disclosure of Invention
The invention aims to provide a reasonably designed chilled water connecting pipe of single-pipe air-conditioning terminal equipment aiming at the defects and shortcomings of the prior art, and the load of the air-conditioning terminal can be increased along with the field condition under the condition of not increasing the total flow of an air-conditioning water system; the temperature of the water return main pipe is higher than that of the water supply main pipe, and the air conditioner tail end equipment and the air which are connected out of the water return main pipe are not easy to condense due to heat exchange, so that the water return main pipe is suitable for an electrical equipment room sensitive to condensed water; the single-pipe connection method can slightly improve the temperature of the return water main pipe, so that the energy efficiency of the water chilling unit is partially improved; the increased total load of the water chilling unit can be mutually offset with the peak load designed by the system, so that more water chilling units can run in a full-load high-efficiency state.
In order to achieve the purpose, the invention adopts the following technical scheme: the system comprises a water supply main pipe, a water return main pipe, a self-operated differential pressure balance valve, a dynamic balance electric two-way valve, a chilled water supply branch pipe, air conditioner tail end equipment, a chilled water return branch pipe and a static balance valve; the water supply main pipe and the water return main pipe are arranged in parallel up and down, a chilled water supply branch pipe on the air conditioner terminal equipment is communicated with the chilled water return main pipe, and a self-operated differential pressure balance valve and a dynamic balance electric two-way valve are sequentially communicated and connected to the chilled water supply branch pipe from the chilled water return main pipe to the air conditioner terminal equipment; the chilled water return branch pipes on the air conditioner tail end equipment are connected with the chilled water return main pipe after being connected with the static balance valve in series.
Furthermore, a pressure reducing valve is connected in series on the chilled water return main pipe between the chilled water supply branch pipe and the chilled water return branch pipe.
Furthermore, a capillary tube is connected between the self-operated differential pressure balance valve and the static balance valve.
The working principle of the invention is as follows: chilled water in the chilled water return main pipe flows into the chilled water supply branch pipe, enters air conditioner terminal equipment through a self-operated differential pressure balance valve and a dynamic balance electric two-way valve on the chilled water supply branch pipe, and the dynamic balance electric two-way valve adjusts the flow of the air conditioner terminal equipment and keeps constant under the flow; the chilled water returns to the chilled water return main pipe after being regulated by the static balance valve in the chilled water return branch pipe, and because the temperature of the chilled water return main pipe is higher than that of the water supply main pipe, the air conditioner terminal equipment and the air heat exchange which are connected out of the chilled water return main pipe are not easy to dewfall, so that the chilled water return main pipe is suitable for electrical equipment rooms sensitive to condensed water.
After adopting the structure, the invention has the beneficial effects that: the invention provides a chilled water connecting pipe pipeline of single-pipe air-conditioning terminal equipment, which can increase the load of the air-conditioning terminal along with the field condition under the condition of not increasing the total flow of an air-conditioning water system; the temperature of the water return main pipe is higher than that of the water supply main pipe, and the air conditioner tail end equipment and the air which are connected out of the water return main pipe are not easy to condense due to heat exchange, so that the water return main pipe is suitable for an electrical equipment room sensitive to condensed water; the single-pipe connection method can slightly improve the temperature of the return water main pipe, so that the energy efficiency of the water chilling unit is partially improved; the increased total load of the water chilling unit can be mutually offset with the peak load designed by the system, so that more water chilling units can run in a full-load high-efficiency state.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
Description of reference numerals:
the system comprises a water supply main pipe 1, a water return main pipe 2, a self-operated differential pressure balance valve 3, a dynamic balance electric two-way valve 4, a chilled water supply branch pipe 5, an air conditioner tail end device 6, a chilled water return branch pipe 7, a static balance valve 8, a pressure reducing valve 9 and a capillary tube 10.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the following technical solutions are adopted in the present embodiment: the system comprises a water supply main pipe 1, a water return main pipe 2, a self-operated differential pressure balance valve 3, a dynamic balance electric two-way valve 4, a chilled water supply branch pipe 5, an air conditioner tail end device 6, a chilled water return branch pipe 7 and a static balance valve 8; the water supply main pipe 1 and the water return main pipe 2 are arranged side by side up and down, a chilled water supply branch pipe 5 on the air conditioner terminal equipment 6 is communicated with the chilled water return main pipe 2 (the air conditioner terminal equipment 6 is generally a fan coil pipe, a cabinet air conditioner unit with lower cold quantity and the like, the cold quantity increasing suggestion of the air conditioner terminal equipment installed by the method is not more than 20% of the total cold quantity of the system, and the method is only used as a supplementary connecting pipe means for flexibly increasing the air conditioner terminal equipment by a dual-pipe air conditioner chilled water system), and a self-operated differential pressure balance valve 3 and a dynamic balance electric two-way valve 4 are sequentially communicated from the chilled water return main pipe 2 to the air conditioner terminal equipment 6 on the chilled water supply branch pipe 5 (the dynamic balance electric two-way valve 4 can be replaced by other valves with the same action); a chilled water return branch pipe 7 on the air conditioner tail end equipment 6 is connected with a chilled water return main pipe 2 after being connected with a static balance valve 8 in series; a pressure reducing valve 9 is connected in series on the chilled water return main pipe 2 between the chilled water supply branch pipe 5 and the chilled water return branch pipe 7 (the pressure reducing valve 9 can be replaced by other resistance elements); a capillary tube 10 is connected between the water outlet of the self-operated differential pressure balance valve 3 and the water outlet (or the measuring interface) of the static balance valve 8.
The working principle of the specific embodiment is as follows: the chilled water connecting pipe of the single-pipe air-conditioning end equipment is connected to a water return pipe of a non-worst branch in a dual-pipe air-conditioning chilled water system, the hydraulic loss of a self-operated differential pressure balance valve 3, a dynamic balance electric two-way valve 4, a chilled water supply branch pipe 5, air-conditioning end equipment 6, a chilled water return branch pipe 7 and a static balance valve 8 which are added is calculated to be P1, the hydraulic loss of a chilled water return header pipe 2 and a pressure reducing valve 9 which are connected in parallel is P2, the pressure drop value of the pressure reducing valve 9 can be set accordingly (the same resistance element can be selected to replace the pressure reducing valve 9 according to the pressure drop value), chilled water in the chilled water return header pipe 2 flows into the chilled water supply branch pipe 5, enters the air-conditioning end equipment 6 through the self-operated differential pressure balance valve 3 and the dynamic balance electric two-way valve 4 on the chilled water supply branch pipe 5, and the dynamic balance electric two-way valve 4 adjusts the flow rate of the air-conditioning end equipment 6, and remains constant at this flow rate; the pressure between the chilled water supply branch pipe 5 and the chilled water return branch pipe 7 of the air-conditioning terminal equipment 6 is conducted through the capillary tube 10, the pressure difference of the water supply return branch pipe is kept constant, the self-operated pressure difference balance valve 3, the static balance valve 8 and the capillary tube 10 form a pressure difference balance unit, the pressure difference balance unit can also be replaced by other pressure difference balance devices, chilled water returns to the chilled water return header pipe 2 after being adjusted through the static balance valve 8 in the chilled water return branch pipe 7, and the temperature of the chilled water return header pipe 2 is higher than that of the water supply header pipe 1, the air-conditioning terminal equipment 6 and air heat exchange connected out of the chilled water return header pipe 2 are not prone to dewing, and the air-conditioning terminal equipment is suitable for electrical equipment rooms sensitive to condensed water.
After adopting above-mentioned structure, this embodiment's beneficial effect is: the specific embodiment provides a chilled water connecting pipe for single-pipe air-conditioning terminal equipment, which can increase the load of the air-conditioning terminal along with the field condition under the condition of not increasing the total flow of an air-conditioning water system; the temperature of the water return main pipe is higher than that of the water supply main pipe, and the air conditioner tail end equipment and the air which are connected out of the water return main pipe are not easy to condense due to heat exchange, so that the water return main pipe is suitable for an electrical equipment room sensitive to condensed water; the single-pipe connection method can slightly improve the temperature of the return water main pipe, so that the energy efficiency of the water chilling unit is partially improved; the increased total load of the water chilling unit can be mutually offset with the peak load designed by the system, so that more water chilling units can run in a full-load high-efficiency state.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (4)
1. Single control air conditioner end equipment refrigerated water takes over pipeline, its characterized in that: the system comprises a water supply main pipe (1), a water return main pipe (2), a self-operated differential pressure balance valve (3), a dynamic balance electric two-way valve (4), a chilled water supply branch pipe (5), an air conditioner tail end device (6), a chilled water return branch pipe (7) and a static balance valve (8); the water supply main pipe (1) and the water return main pipe (2) are arranged side by side up and down, a chilled water supply branch pipe (5) on the air conditioner terminal equipment (6) is communicated with the chilled water return main pipe (2), and a self-operated differential pressure balance valve (3) and a dynamic balance electric two-way valve (4) are sequentially communicated and connected on the chilled water supply branch pipe (5) from the chilled water return main pipe (2) to the air conditioner terminal equipment (6); the chilled water return branch pipes (7) on the air conditioner tail end equipment (6) are connected with the chilled water return main pipe (2) after being connected with the static balance valve (8) in series.
2. The single-pipe air conditioning terminal equipment chilled water pipe connection of claim 1, wherein: a pressure reducing valve (9) is connected in series on the chilled water return main pipe (2) between the chilled water supply branch pipe (5) and the chilled water return branch pipe (7).
3. The single-pipe air conditioning terminal equipment chilled water pipe connection of claim 1, wherein: and a capillary tube (10) is connected between the self-operated differential pressure balance valve (3) and the static balance valve (8).
4. The single-pipe air conditioning terminal equipment chilled water pipe connection of claim 1, wherein: the working principle is as follows: chilled water in the chilled water return main pipe (2) flows into the chilled water supply branch pipe (5), enters the air conditioner terminal equipment (6) through a self-operated differential pressure balance valve (3) on the chilled water supply branch pipe (5) and a dynamic balance electric two-way valve (4), and the dynamic balance electric two-way valve (4) adjusts the flow of the air conditioner terminal equipment (6) and keeps constant under the flow; the chilled water returns to the chilled water return main pipe (2) after being adjusted by the static balance valve (8) in the chilled water return branch pipe (7), and because the temperature of the chilled water return main pipe (2) is higher than that of the water supply main pipe (1), the air conditioner terminal equipment (6) and the air heat exchange connected out of the chilled water return main pipe (2) are not prone to dewing, and the air conditioner is suitable for electrical equipment rooms sensitive to condensed water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086944.7A CN113531698A (en) | 2020-10-12 | 2020-10-12 | Single-pipe air conditioner terminal equipment chilled water connecting pipe pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086944.7A CN113531698A (en) | 2020-10-12 | 2020-10-12 | Single-pipe air conditioner terminal equipment chilled water connecting pipe pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN113531698A true CN113531698A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011086944.7A Pending CN113531698A (en) | 2020-10-12 | 2020-10-12 | Single-pipe air conditioner terminal equipment chilled water connecting pipe pipeline |
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| CN (1) | CN113531698A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029356A (en) * | 2023-09-04 | 2023-11-10 | 杭州泵浦节能技术有限公司 | High-efficiency energy-saving device of circulating water system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000105020A (en) * | 1998-09-28 | 2000-04-11 | Kajima Corp | Ice heat storage heat pump device using unutilized heat source |
| CN203147921U (en) * | 2013-04-09 | 2013-08-21 | 北京天云动力科技有限公司 | Water chilling unit energy saving system |
| CN106895571A (en) * | 2017-04-17 | 2017-06-27 | 香港华艺设计顾问(深圳)有限公司 | A kind of network computer room four-pipe system simultaneous air-conditioning device |
| CN207865610U (en) * | 2018-02-07 | 2018-09-14 | 华南理工大学建筑设计研究院 | A kind of middle temperature air conditioning system based on regional cold supply system |
| CN210197600U (en) * | 2019-06-18 | 2020-03-27 | 福建省建筑设计研究院有限公司 | Secondary pump variable flow chilled water system with energy storage device |
-
2020
- 2020-10-12 CN CN202011086944.7A patent/CN113531698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000105020A (en) * | 1998-09-28 | 2000-04-11 | Kajima Corp | Ice heat storage heat pump device using unutilized heat source |
| CN203147921U (en) * | 2013-04-09 | 2013-08-21 | 北京天云动力科技有限公司 | Water chilling unit energy saving system |
| CN106895571A (en) * | 2017-04-17 | 2017-06-27 | 香港华艺设计顾问(深圳)有限公司 | A kind of network computer room four-pipe system simultaneous air-conditioning device |
| CN207865610U (en) * | 2018-02-07 | 2018-09-14 | 华南理工大学建筑设计研究院 | A kind of middle temperature air conditioning system based on regional cold supply system |
| CN210197600U (en) * | 2019-06-18 | 2020-03-27 | 福建省建筑设计研究院有限公司 | Secondary pump variable flow chilled water system with energy storage device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029356A (en) * | 2023-09-04 | 2023-11-10 | 杭州泵浦节能技术有限公司 | High-efficiency energy-saving device of circulating water system |
| CN117029356B (en) * | 2023-09-04 | 2024-02-23 | 杭州泵浦节能技术有限公司 | High-efficiency energy-saving device of circulating water system |
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Application publication date: 20211022 |
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| RJ01 | Rejection of invention patent application after publication |