Four-pipe to two-pipe air conditioning water system device

Abstract

This utility model belongs to the technical field of air conditioning water systems, specifically relating to a four-pipe to two-pipe air conditioning water system device, including an air conditioning water pipe well, a horizontal main pipe, an electric butterfly valve assembly, a self-operated differential pressure valve assembly, and a maintenance butterfly valve. The air conditioning water pipe well is equipped with cold water supply and return risers and hot water supply and return risers. The horizontal main pipe connects to the cold water supply and return risers and the hot water supply and return risers, and is equipped with manual butterfly valves for both cold and hot water pipes. In use, this utility model allows for remote control via the electric butterfly valves. In summer, the hot water electric butterfly valve is closed and the cold water electric butterfly valve is opened; in winter, the opposite is true, achieving switching between cooling and heating at the terminal, while preventing cross-flow between cold and hot water, thus solving the problems of cumbersome manual switching and cross-flow in traditional systems.

Description

Technical Field

[0001] This utility model belongs to the technical field of air conditioning water system, specifically, it relates to a four-pipe to two-pipe air conditioning water system device. Background Technology

[0002] In building air conditioning systems, traditional four-pipe systems can simultaneously meet cooling and heating needs, but they suffer from high investment, complex piping layout, and large space occupation. Two-pipe systems, while simpler in structure and lower in cost, cannot meet the cooling and heating needs of different areas simultaneously, and require manual switching during seasonal changes, which is inconvenient and prone to hot and cold water cross-flow. In existing building air conditioning system renovation projects, owners often hope to retain some four-pipe risers and optimize the horizontal pipe system to achieve two-pipe operation, thereby reducing renovation costs and space occupation. However, current technology lacks efficient conversion devices, making it difficult to meet the requirements of hydraulic balance. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a four-pipe to two-pipe air conditioning water system device.

[0004] According to the present invention, a four-pipe to two-pipe air conditioning water system device includes an air conditioning water pipe well, a horizontal main pipe, an electric butterfly valve group, a self-operated differential pressure valve group, and a maintenance butterfly valve. The air conditioning water pipe well is equipped with a cold water supply and return water riser and a hot water supply and return water riser. The horizontal main pipe is connected to the cold water supply and return water riser and the hot water supply and return water riser, and a cold water pipe manual butterfly valve and a hot water pipe manual butterfly valve are respectively installed on the horizontal main pipe.

[0005] In a preferred embodiment: the manual butterfly valve for cold water pipe and the manual butterfly valve for hot water pipe remain open during normal operation.

[0006] In a preferred embodiment: the electric butterfly valve assembly includes an electric butterfly valve for cold water pipes and an electric butterfly valve for hot water pipes installed on the horizontal main pipe.

[0007] In a preferred embodiment, the electric butterfly valve assembly further includes a control module for controlling the electric butterfly valves for the cold water pipes and the hot water pipes.

[0008] In a preferred embodiment: the electric butterfly valve for cold water pipes and the electric butterfly valve for hot water pipes support remote control switching.

[0009] In a preferred embodiment: the horizontal hot water supply and return main pipe and the horizontal cold water supply and return main pipe are interconnected by pipes.

[0010] In a preferred embodiment: the self-operated differential pressure valve group is connected to the horizontal cold water supply and return main after the four-pipe system is converted to a two-pipe system.

[0011] In a preferred embodiment: the self-operated differential pressure valve assembly is used to adaptively regulate the pressure balance within the horizontal main pipe.

[0012] In a preferred embodiment: the maintenance butterfly valve is located in the direction of water flow of the self-operated differential pressure valve assembly.

[0013] In a preferred embodiment: the maintenance butterfly valve is used to cut off the water flow when maintaining a self-operated differential pressure valve assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When this utility model is used, it is remotely controlled by an electric butterfly valve. In summer, the hot water electric butterfly valve is closed and the cold water electric butterfly valve is opened, and vice versa in winter, so as to realize the switching of cooling and heating at the terminal and prevent cross-flow of hot and cold water, thus solving the problems of cumbersome manual switching and cross-flow in traditional systems.

[0016] 2. When this utility model is used, the self-regulating differential pressure valve assembly adaptively adjusts the hydraulic imbalance at the end, maintaining stable system pressure. Only the horizontal main pipe needs to be modified, while the original four-pipe riser is retained, reducing initial investment and pipeline space occupation, and adapting to the needs of building air conditioning retrofitting. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] In the picture:

[0020] Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0022] like Figure 1As shown, this utility model discloses a four-pipe to two-pipe air conditioning water system device, including an air conditioning water pipe well 1, a horizontal main pipe, an electric butterfly valve assembly, a self-operated differential pressure valve assembly 8, and a maintenance butterfly valve 9. The air conditioning water pipe well 1 is equipped with a cold water supply and return riser 2 and a hot water supply and return riser 3. The horizontal main pipe connects to the cold water supply and return riser 2 and the hot water supply and return riser 3, and a cold water pipe manual butterfly valve 4 and a hot water pipe manual butterfly valve 5 are respectively installed on the horizontal main pipe. The cold water pipe manual butterfly valve 4 and the hot water pipe manual butterfly valve 5 remain open during normal operation. The electric butterfly valve assembly includes a cold water pipe electric butterfly valve 6 and a hot water pipe electric butterfly valve 9 installed on the horizontal main pipe. The electric butterfly valve 7 for water pipes, the electric butterfly valve group also includes a control module for controlling the electric butterfly valve 4 for cold water pipes and the electric butterfly valve 5 for hot water pipes. The electric butterfly valve 6 for cold water pipes and the electric butterfly valve 7 for hot water pipes support remote control switching, and the horizontal hot water supply and return main pipes and the horizontal cold water supply and return main pipes are interconnected through pipes. The self-operated differential pressure valve group 8 is connected to the horizontal cold water supply and return main pipe after the four-pipe system is converted to a two-pipe system. The self-operated differential pressure valve group 8 is used to adaptively adjust the pressure balance in the horizontal main pipe. The maintenance butterfly valve 9 is set in the direction of water flow of the self-operated differential pressure valve group 8. The maintenance butterfly valve 9 is used to cut off the water flow when the self-operated differential pressure valve group is under maintenance.

[0023] Working principle

[0024] When this utility model is in operation, the manual butterfly valve 4 for the cold water pipe and the manual butterfly valve 5 for the hot water pipe are kept in the normally open state beforehand. During summer cooling, the electric butterfly valve 7 for the hot water pipe is closed and the electric butterfly valve 6 for the cold water pipe is opened, allowing the cold water supply and return riser 2 and the horizontal main pipe to flow into the end, while preventing cold water from entering the hot water supply and return riser 3. During winter heating, the electric butterfly valve 6 for the cold water pipe is closed and the electric butterfly valve 7 for the hot water pipe is opened, allowing the hot water supply and return riser 3 and the horizontal main pipe to flow into the end, while preventing hot water from entering the cold water supply and return riser 2. In addition, the self-operated differential pressure valve group 8 on the horizontal cold water supply and return main pipe can automatically adjust the pressure balance according to the cold and hot water status, and the maintenance butterfly valve 9 in the direction of water flow facilitates the maintenance of the self-operated differential pressure valve group 8.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A device for converting a four-pipe to a two-pipe air conditioning water system, characterized in that, It includes an air conditioning water pipe well (1), a horizontal main pipe, an electric butterfly valve assembly, a self-operated differential pressure valve assembly (8), and a maintenance butterfly valve (9). The air conditioning water pipe well (1) is equipped with a cold water supply and return water riser (2) and a hot water supply and return water riser (3). The horizontal main pipe is connected to the cold water supply and return water riser (2) and the hot water supply and return water riser (3). The horizontal main pipe is equipped with a cold water pipe manual butterfly valve (4) and a hot water pipe manual butterfly valve (5).

2. The four-pipe to two-pipe air conditioning water system device according to claim 1, wherein The manual butterfly valve (4) for cold water pipes and the manual butterfly valve (5) for hot water pipes remain open during normal operation.

3. The four-pipe to two-pipe air conditioning water system device according to claim 1, wherein The electric butterfly valve assembly includes a cold water pipe electric butterfly valve (6) and a hot water pipe electric butterfly valve (7) installed on the horizontal main pipe.

4. The four-pipe to two-pipe air conditioning water system conversion apparatus according to claim 3, wherein The electric butterfly valve assembly also includes a control module for controlling the electric butterfly valve (6) for cold water pipes and the electric butterfly valve (7) for hot water pipes.

5. The four-pipe to two-pipe air conditioning water system conversion apparatus as set forth in claim 4, wherein The electric butterfly valve (6) for cold water pipes and the electric butterfly valve (7) for hot water pipes support remote control switching.

6. The four-to-two pipe conversion water system apparatus of claim 1, wherein, The horizontal hot water supply and return mains and the horizontal cold water supply and return mains are interconnected by pipes.

7. The four-to-two pipe conversion water system apparatus of claim 1, wherein, The self-operated differential pressure valve group (8) is connected to the horizontal cold water supply and return main after the four-pipe system is converted to a two-pipe system.

8. The four-pipe to two-pipe air conditioning water system device, as recited in claim 7, wherein, The self-operated differential pressure valve group (8) is used to adaptively adjust the pressure balance in the horizontal main pipe.

9. The four-pipe to two-pipe hydronic air conditioning system conversion apparatus of claim 8, wherein, The maintenance butterfly valve (9) is located in the direction of water flow of the self-operated differential pressure valve group (8).

10. The four-pipe to two-pipe air conditioning water system conversion apparatus as recited in claim 9, wherein The maintenance butterfly valve (9) is used to cut off the water flow when maintaining the self-operated differential pressure valve group.

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