A single-pump group connection water supply system

Abstract

A single pump group is connected to supply water system in partition, including: municipal pipe network, low area user pipe network, bottom water tank, shared frequency conversion pump group, middle area user pipe network, top water tank, high area user pipe network, low area user pipe network water inlet end is equipped with low area connecting pipeline, municipal pipe network pipeline connects the first water supplement pipeline with low area connecting pipeline and accesses water inlet, bottom water tank, check valve, shared frequency conversion pump group are sequentially connected, the water inlet pipeline of middle area user pipe network is equipped with pressure regulating module, the water outlet end pipeline of shared frequency conversion pump group connects pressure regulating module and the water inlet end of second water supplement pipeline, and top water tank water outlet end pipeline connects the water inlet end of high area user pipe network, the bottom water tank, shared frequency conversion pump group are arranged in basement, and the top water tank is arranged in top structure, so as to not occupy building floor area, three partitionings of high-rise building only use one shared frequency conversion pump group, so as to reduce the equipment investment in early stage and operation and maintenance cost in later period.

Description

Technical Field

[0001] This utility model relates to the field of secondary water supply, and in particular to a zoned water supply device. Background Technology

[0002] To avoid excessive static head at water appliances, which could cause leaks or damage to sanitary fixtures and water supply fittings, high-rise buildings should adopt a zoned water supply system.

[0003] Three-zone water supply is a common form of water supply for high-rise buildings. In existing three-zone water supply systems for high-rise buildings, many series or parallel water supply schemes use a water tank for each zone. This results in the water tank occupying part of the building's floor area, and this part of the floor generates noise. Some parallel water supply schemes provide independent variable frequency pump sets for each water supply zone, and each variable frequency pump set needs to operate continuously, which increases the initial equipment investment and subsequent operation and maintenance costs. Some series or parallel water supply schemes use pressure-reducing water supply, resulting in high energy consumption.

[0004] The current three-zone high-rise water supply system lacks a high-rise zone water supply solution that does not require the use of water tanks or variable frequency water pump sets, only requires one set of variable frequency water pump sets to reduce the initial investment and later operation and maintenance costs, and avoids the high energy consumption caused by pressure-reducing water supply. Utility Model Content

[0005] To overcome the above-mentioned defects, the purpose of this utility model is to propose a single-pump-set combined supply zone water supply system, including: municipal pipe network, low-zone user pipe network, bottom water tank, shared variable frequency pump set, middle-zone user pipe network, top water tank, and high-zone user pipe network; Low-zone users' water inlet pipes are equipped with low-zone connection pipes; The low-zone connecting pipe is equipped with a pressure sensor, a flow meter, and a check valve in sequence along the water flow direction; The bottom water tank is equipped with a first water supply pipe at the water inlet, and a solenoid valve and a float valve are sequentially installed at the end of the first water supply pipe along the water flow direction. A level gauge is installed inside the bottom water tank. The municipal pipeline connects the first water supply pipeline and the low-level connecting pipeline to the water inlet. The shared variable frequency pump set includes two or more variable frequency water pumps connected in parallel; The common variable frequency pump set is equipped with a pressure stabilizing water tank and the pressure sensor at the water outlet. The bottom water tank, the check valve, and the shared variable frequency pump set are connected by pipelines in sequence. A pressure regulating module is installed at the water inlet pipe of the central area user network; The voltage regulating module includes a direct-connection branch and a voltage-reducing branch connected in parallel; The direct-connection branch is equipped with the solenoid valve; The pressure-reducing branch is provided with the solenoid valve and the pressure-reducing valve in sequence along the water flow direction; The top water tank is equipped with a second water supply pipe at the water inlet. The end of the second water supply pipe is equipped with the solenoid valve and the float valve in sequence along the water flow direction. The top water tank is equipped with the level gauge. The outlet pipe of the shared variable frequency pump set is connected to the parallel water inlet of the pressure regulating module and the second water supply pipe. The water outlet pipe of the top water tank is connected to the water inlet of the high-rise user network.

[0006] The operation mode of this single-pump combined supply zone water supply system is as follows: During periods when neither the bottom nor the top water tank needs to be replenished: The solenoid valves of the bottom water tank and the top water tank are both closed; The low-lying area user network is supplied with water pressure through the municipal network. During the water supply process of the central area user network, the solenoid valve of the direct connection branch is opened, the solenoid valve of the pressure reducing branch is closed, and the water pressure of the common variable frequency pump set is set based on meeting the water demand of the most unfavorable point of the central area user network, monitored by the pressure sensor of the common variable frequency pump set, and variable frequency constant pressure water supply is carried out. The high-rise area user network supplies water via the top water tank in a gravity-flow manner.

[0007] When the bottom water tank needs to be refilled: When the level gauge of the bottom water tank detects that the bottom water tank has reached the warning level, and at the same time the flow rate at the flow meter monitoring point on the low zone connecting pipe is the off-peak flow rate value and the municipal water pressure at the pressure sensor monitoring point meets the standard, the solenoid valve of the first water supply pipe opens until the level gauge of the bottom water tank detects that the bottom water tank has reached the upper limit, at which point the solenoid valve closes. The water supply to the low-zone user network, the middle-zone user network, and the high-zone user network is the same as step (1).

[0008] During periods when the top water tank needs to be refilled: When the level gauge of the top water tank detects that the top water tank has reached the warning level, and at the same time the level gauge of the bottom water tank detects that the bottom water tank has not reached the warning level, the solenoid valve of the second water supply pipe opens, and the water pressure supplied by the shared variable frequency pump group increases to the set constant pressure value that can supply water to the top water tank. This constant pressure value is monitored by the pressure sensor of the shared variable frequency pump group. The water supply to the low-zone user network and the high-zone user network is the same as step (1). During the water supply process of the central area user network, the solenoid valve of the direct connection branch is closed, and the solenoid valve of the pressure reducing branch is opened, and pressure reducing water supply is carried out by the pressure reducing valve. When the level gauge of the top water tank detects that the top water tank has reached the upper limit of the water level, the water pressure of the shared variable frequency pump set drops to the benchmark setting value that meets the water demand of the most unfavorable point of the central area user network, and at the same time, the solenoid valve of the second water replenishment pipeline is closed.

[0009] Furthermore, redundant variable frequency water pumps are added to and connected to the shared variable frequency pump group, which ensures that if one variable frequency water pump fails, there is a replacement variable frequency water pump to maintain system operation.

[0010] The advantages and positive effects of this utility model are as follows: the bottom water tank and the shared variable frequency pump set are set in the basement, and the top water tank is set in the top structure, which does not occupy the building floor area; only one shared variable frequency pump set is used in the three zones of the high-rise building, which reduces the initial equipment investment and the later operation and maintenance costs; the water supply to the low zone users' pipe network and the water replenishment of the bottom water tank make full use of the excess water head of the municipal pipe network to achieve energy saving; the system only reduces the pressure and supplies water to the middle zone users' pipe network during the water replenishment stage of the top water tank, and the excess water head at the front end of the pressure reducing valve during this stage can be used to lift the replenished water upward, avoiding energy waste. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the single-pump-unit combined supply zone water supply system of this utility model.

[0012] In the diagram, the following components are included: Municipal Pipeline-1, Low-Zone User Pipeline-2, Low-Zone Connecting Pipeline-21, Bottom Water Tank-3, First Water Supply Pipeline-31, Shared Variable Frequency Pump Set-4, Variable Frequency Water Pump-41, Redundant Variable Frequency Water Pump-42, Mid-Zone User Pipeline-5, Pressure Regulating Module-51, Direct Connection Branch-511, Pressure Reducing Branch-512, Top Water Tank-6, Second Water Supply Pipeline-61, High-Zone User Pipeline-7, Check Valve-a, Solenoid Valve-b, Float Valve-c, Level Gauge-d, Pressure Sensor-e, Flow Meter-f, Pressure Stabilizing Tank-g, and Pressure Reducing Valve-h. Detailed Implementation

[0013] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0014] like Figure 1 As shown, Example 1: A single-pump-unit combined supply zone water supply system includes: municipal pipeline network 1, low-zone user pipeline network 2, bottom water tank 3, shared variable frequency pump set 4, middle-zone user pipeline network 5, top water tank 6, and high-zone user pipeline network 7. The water inlet of the low-zone user network 2 is equipped with a low-zone connection pipe 21; The low-zone connecting pipe 21 is equipped with a pressure sensor e, a flow meter f, and a check valve a in sequence along the water flow direction; A first water supply pipe 31 is provided at the water inlet of the bottom water tank 3. A solenoid valve b and a float valve c are sequentially provided at the end of the first water supply pipe along the water flow direction. A level gauge d is provided inside the bottom water tank 3. The municipal pipeline 1 connects the first water supply pipeline 31 to the low-level connection pipeline 21 and is connected to the water inlet; The shared variable frequency pump set 4 includes two or more variable frequency water pumps 41 connected in parallel; The common variable frequency pump set 4 is equipped with a pressure stabilizing tank g and a pressure sensor e at the water outlet. Bottom water tank 3, check valve a, and shared variable frequency pump set 4 are connected by pipes in sequence; A pressure regulating module 51 is installed at the water inlet pipe of the central area user network 5; The voltage regulating module 51 includes a parallel direct connection branch 511 and a voltage reducing branch 512; Direct connection branch 511 is equipped with solenoid valve b; The pressure-reducing branch 512 is equipped with a solenoid valve b and a pressure-reducing valve h in sequence along the water flow direction; A second water supply pipe 61 is provided at the water inlet of the top water tank 6. A solenoid valve b and a float valve c are sequentially provided at the end of the second water supply pipe along the water flow direction. A level gauge d is provided inside the top water tank 6. The outlet pipe of the shared variable frequency pump set 4 is connected to the pressure regulating module 51 and the second water supply pipe 61 at the parallel water inlet. The water outlet pipe of the top water tank 6 is connected to the water inlet of the high-zone user's pipe network 7.

[0015] like Figure 1 As shown, Example 2: As a preferred embodiment of the single-pump-unit combined supply zone water supply system in Example 1, the shared variable frequency pump unit 4 also includes a redundant variable frequency water pump 42 connected to the shared variable frequency pump unit.

[0016] The present invention has been described in detail above through embodiments, but the content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A single-pump combined supply zoned water supply system, characterized in that, include: Municipal pipeline network (1), low-zone user pipeline network (2), bottom water tank (3), shared variable frequency pump set (4), middle-zone user pipeline network (5), top water tank (6), high-zone user pipeline network (7); The low-zone user network (2) has a low-zone connection pipe (21) at the water inlet end. The low-zone connecting pipe (21) is equipped with a pressure sensor (e), a flow meter (f), and a check valve (a) in sequence along the water flow direction. The bottom water tank (3) is provided with a first water supply pipe (31) at the water inlet. The end of the first water supply pipe is provided with a solenoid valve (b) and a float valve (c) in sequence along the water flow direction. The bottom water tank (3) is provided with a level gauge (d). The municipal pipeline (1) is connected to the first water supply pipeline (31) and the low-level connection pipeline (21) and connected to the water inlet; The shared variable frequency pump set (4) includes two or more variable frequency water pumps (41) connected in parallel. The common variable frequency pump set (4) is equipped with a pressure stabilizing water tank (g) and a pressure sensor (e) at the water outlet. The bottom water tank (3), the check valve (a), and the shared variable frequency pump set (4) are connected in sequence by pipelines; A pressure regulating module (51) is provided at the water inlet pipe of the central area user network (5); The voltage regulating module (51) includes a direct connection branch (511) and a voltage reducing branch (512) connected in parallel. The direct connection branch (511) is equipped with the solenoid valve (b); The pressure-reducing branch (512) is provided with the solenoid valve (b) and the pressure-reducing valve (h) in sequence along the water flow direction; The top water tank (6) is provided with a second water supply pipe (61) at the water inlet. The end of the second water supply pipe is provided with the solenoid valve (b) and the float valve (c) in sequence along the water flow direction. The top water tank (6) is provided with the level gauge (d). The outlet pipe of the shared variable frequency pump set (4) is connected to the parallel water inlet of the pressure regulating module (51) and the second water supply pipe (61); The outlet pipe of the top water tank (6) is connected to the inlet of the high-rise user network (7).

2. The single-pump combined supply zone water supply system according to claim 1, characterized in that, The shared variable frequency pump group (4) also includes a redundant variable frequency water pump (42) connected to the shared variable frequency pump group.

Images