A centralized pressure-reducing circulation pipeline system for high-rise domestic hot water

Abstract

The present invention relates to the technical field of high-rise domestic hot water pipelines, and is a high-rise domestic hot water centralized pressure-reducing circulation pipeline system, which includes an outer pipe and an inner pipe. The inner pipe penetrates through the outer pipe and is located on the center line of the outer pipe. Both ends of the outer pipe are hermetically connected to the inner pipe. The inner pipe is directly connected to the hot water source, and the outer pipe is connected to the hot water source through a pressure-reducing valve. A plurality of user water outlets are provided on the outer pipe. The hot water supplied by the upper pipeline enters the pressure-reducing valve and the inner pipe respectively. The hot water coming out of the pressure-reducing valve flows in the cavity formed by the inner pipe and the outer pipe. The hot water flowing inside the inner pipe replenishes the heat lost by the outer pipe, ensuring that the water temperature at the water usage point meets the requirements. Since the hot water in the inner pipe does not pass through the pressure-reducing valve, it will not affect the circulation of the system, and at the same time meets the requirements of the user's water temperature. In addition, only a larger pressure-reducing valve is set at the main pipe of the low-zone system to ensure that the pressure of the entire partition meets the requirements, and at the same time ensure that the operation of the entire water supply system does not exceed the pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of high-rise domestic hot water pipelines, and particularly relates to a centralized decompression and circulation pipeline system for high-rise domestic hot water. Background Art

[0002] In the existing centralized high-rise domestic hot water with a circulation system, a pressure reducing valve needs to be set on each floor. If there are many water use points on the entire flat floor, many pressure reducing valves also need to be set on each floor, resulting in an increase in project investment and commissioning difficulties. At the same time, there is no possibility of having a standby pressure reducing valve, resulting in insufficient water supply reliability. Such a system does not increase the cost, while reducing the amount of pressure reducing valves used, and reducing the commissioning and operation maintenance costs. Summary of the Invention

[0003] The present invention provides a centralized decompression and circulation pipeline system for high-rise domestic hot water, which solves the technical problems of high cost and difficult operation and maintenance caused by the necessity of using a large number of pressure reducing valves in the centralized high-rise hot water circulation.

[0004] The present invention provides a centralized decompression and circulation pipeline system for high-rise domestic hot water to solve the above technical problems, including an outer pipe and an inner pipe. The inner pipe penetrates through the outer pipe and is located on the center line of the outer pipe. Both ends of the outer pipe are hermetically connected to the inner pipe. The inner pipe is directly communicated with the hot water source. The outer pipe is connected to the hot water source through a pressure reducing valve. A plurality of user water outlets are provided on the outer pipe.

[0005] Optionally, the inner pipe is a soft, heat-resistant and non-toxic plastic pipe.

[0006] Optionally, both ends of the outer pipe are fixedly connected through sealing chucks.

[0007] Optionally, the inner pipe is a flexible pipe with heat conduction properties.

[0008] Optionally, the hot water source is connected to the main pipe. The main pipe is connected to the outer pipe through a pressure reducing valve, and the main pipe is directly connected to the inner pipe.

[0009] Optionally, the main pipe is connected to the outer pipe through a plurality of parallel pressure reducing valves.

[0010] Optionally, the outer diameter of the inner pipe is 20 mm, and the nominal diameter of the outer pipe is 50 mm.

[0011] Beneficial effects: The present invention provides a centralized pressure-reducing circulation pipeline system for high-rise domestic hot water, which includes an outer pipe and an inner pipe. The inner pipe penetrates through the outer pipe and is located on the center line of the outer pipe. Both ends of the outer pipe are hermetically connected to the inner pipe. The inner pipe is directly communicated with the hot water source, and the outer pipe is connected to the hot water source through a pressure reducing valve. A plurality of user water outlets are provided on the outer pipe. The upper pipeline supplies hot water to enter the pressure reducing valve and the inner pipe respectively. The hot water coming out of the pressure reducing valve flows in the cavity formed by the inner pipe and the outer pipe. The hot water flowing inside the inner pipe replenishes the heat lost by the outer pipe, ensuring that the water temperature at the water usage point meets the requirements. Since the hot water in the inner pipe does not pass through the pressure reducing valve, it will not affect the circulation of the system, and at the same time meets the requirements of the user's water temperature. According to the static pressure of the hot water, it is divided into several high and low zones to ensure that the system will not be over-pressurized. At the same time, the use of pressure reducing valves is saved, providing the reliability of the system. In addition, only a larger pressure reducing valve is set at the main pipe of the low zone system to ensure that the pressure of the entire partition meets the requirements, and at the same time ensure that the operation of the entire water supply system does not exceed the pressure.

[0012] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and to be implemented in accordance with the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0014] Figure 1 is an enlarged schematic view of the internal structure of the centralized pressure-reducing circulation pipeline system for high-rise domestic hot water of the present invention;

[0015] Figure 2 is a schematic diagram of the setting of the existing hot water system;

[0016] Figure 3 is a schematic diagram of the setting of the centralized pressure-reducing circulation pipeline system for high-rise domestic hot water of the present invention.

[0017] Description of reference numerals: Sealing chuck 1, outer pipe 2, inner pipe 3, user water outlet 4, outer pipe water inlet 5, inner pipe water inlet 6, pressure reducing valve 7. DETAILED DESCRIPTION OF THE INVENTION

[0018] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present invention will be clearer according to the following description and the claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0019] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] As Figure 1 and Figure 3 As shown, the present invention provides a centralized decompression circulation pipeline system for high-rise domestic hot water, including an outer pipe 2 and an inner pipe 3. The inner pipe 3 passes through the outer pipe 2 and is located on the center line of the outer pipe 2. Both ends of the outer pipe 2 are hermetically connected to the inner pipe 3. The inner pipe 3 is directly communicated with the hot water source, and the outer pipe 2 is connected to the hot water source through a pressure reducing valve 7. A plurality of user water outlets 4 are provided on the outer pipe 2.

[0022] The hot water supplied by the upper pipeline enters the pressure reducing valve 7 and the inner pipe 3 respectively. The hot water coming out of the pressure reducing valve 7 flows in the cavity formed by the inner pipe 3 and the outer pipe 2. The hot water flowing inside the inner pipe 3 compensates for the heat loss of the outer pipe 2, ensuring that the water temperature at the water use point meets the requirements. Since the hot water in the inner pipe 3 does not pass through the pressure reducing valve 7, it will not affect the circulation of the system, and at the same time meets the requirements of the user's water temperature. According to the static pressure of the hot water, it is divided into several high and low zones to ensure that the system will not be overpressurized. At the same time, it saves the use of the pressure reducing valve 7 and provides the reliability of the system. In addition, only a larger pressure reducing valve 7 is provided at the main pipe of the low zone system to ensure that the pressure of the entire partition meets the requirements and at the same time ensure that the operation of the entire water supply system does not exceed the pressure.

[0023] Figure 2For the setting principle of the existing conventional hot water system, in the existing centralized high-rise domestic hot water with a circulation system, a pressure reducing valve 7 needs to be set on each floor. If there are many water use points on the entire flat floor and many pressure reducing valves 7 also need to be set on each floor, it will increase the project investment and debugging difficulties. At the same time, there is no possibility of having a standby for the pressure reducing valve 7, resulting in insufficient reliability of the water supply.

[0024] In this embodiment, according to the composition of the centralized high-rise hot water circulation and preparation system listed in the design specifications, a large number of pressure reducing valves 7 must be used to ensure that the water pressure at each water use point meets the requirements and the circulation will not be disturbed; only one larger pressure reducing valve 7 is set at the main pipe of the low-zone system to ensure that the pressure of the entire partition meets the requirements and at the same time ensure that the operation of the entire system does not exceed the pressure; an ordinary pipe is used with a flexible plastic pipe inside. This flexible small plastic pipe can ensure the operation of the system circulation without passing through the pressure reducing valve 7. The static water pressure of the centralized high-rise domestic hot water system can be solved by a pressure reducing valve 7 to ensure the normal circulation of the hot water circulation system without increasing the cost. Without increasing the cost, while reducing the amount of pressure reducing valves 7 used, reducing the debugging and operation maintenance costs.

[0025] In an optional solution, the inner pipe 3 is a flexible pipe with heat conduction properties. Specifically, the inner pipe 3 is a soft heat-resistant non-toxic plastic pipe. The inner pipe 3 is a flexible pressure-resistant non-toxic plastic pipe such as a PVC pipe. Both ends of the outer pipe 2 are fixedly connected through a sealing chuck 1. The entire system consists of a pressure reducing valve 7, an ordinary pipe, a flexible pressure-resistant non-toxic plastic pipe such as a PVC pipe inside, and a special sealing chuck 1 to form a closed fluid space.

[0026] In an optional solution, the hot water source is connected to the main pipe. The main pipe is connected to the outer pipe 2 through a pressure reducing valve 7, and the main pipe is directly connected to the inner pipe 3. The water inlet 5 of the outer pipe is connected to the hot water source through a pressure reducing valve 7, and the water inlet 6 of the inner pipe is directly connected to the hot water source.

[0027] In an optional solution, as Figure 3 shown, the main pipe is connected to the outer pipe 2 through multiple parallel pressure reducing valves 7. Multiple parallel pressure reducing valves 7 are safer.

[0028] In an optional solution, the outer diameter of the inner pipe 3 is 20 mm, and the nominal diameter of the outer pipe 2 is 50 mm.

[0029] System working principle:

[0030] (1) The hot water supplied from the upper pipeline enters the pressure reducing valve and the inner pipe respectively. The hot water coming out of the pressure reducing valve flows in the cavity formed by the inner pipe and the outer pipe.

[0031] (2) The hot water flowing inside the inner pipe compensates for the heat loss of the outer pipe to ensure that the water temperature at the water use point meets the requirements.

[0032] (3) Since the hot water in the inner pipe does not pass through the pressure reducing valve, it will not affect the circulation of the system and at the same time meet the user's water temperature requirements.

[0033] (4) It is divided into several high and low zones according to the static pressure of hot water to ensure that the system will not be overpressured. At the same time, it saves the use of pressure reducing valves and provides the reliability of the system.

[0034] The debugging process of this system: Only need to adjust the setting value of the adjustable pressure reducing valve to complete the water pressure setting of the zones it serves. The on-site debugging and installation are also relatively convenient.

[0035] As described above, it is only the preferred embodiment of the present invention and does not impose any formal restrictions on the present invention; any ordinary technical personnel in the industry can smoothly implement the present invention as shown in the accompanying drawings of the specification and described above; however, any slight changes, modifications and equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A centralized pressure-reducing and circulating pipeline system for high-rise domestic hot water, characterized in that, it includes an outer pipe and an inner pipe. The inner pipe penetrates the outer pipe and is located on the center line of the outer pipe. Both ends of the outer pipe are hermetically connected to the inner pipe. The inner pipe is directly connected to the hot water source. The outer pipe is connected to the hot water source through a pressure reducing valve. A plurality of user water outlets are provided on the outer pipe; both ends of the outer pipe are fixedly connected through a sealing chuck; the hot water source is connected to the main pipe. The main pipe is connected to the outer pipe through a pressure reducing valve, and the main pipe is directly connected to the inner pipe.

2. The centralized pressure-reducing and circulating pipeline system for high-rise domestic hot water according to claim 1, characterized in that, the inner pipe is a soft heat-resistant non-toxic plastic pipe.

3. The centralized pressure-reducing and circulating pipeline system for high-rise domestic hot water according to claim 1, characterized in that, the inner pipe is a flexible pipe with heat conduction properties.

4. The centralized pressure-reducing and circulating pipeline system for high-rise domestic hot water according to claim 1, characterized in that, the main pipe is connected to the outer pipe through a plurality of parallel pressure reducing valves.

5. The centralized pressure-reducing and circulating pipeline system for high-rise domestic hot water according to claim 1, characterized in that, the outer diameter of the inner pipe is 20 mm, and the nominal diameter of the outer pipe is 50 mm.

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