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KSSQB INTELLIGENT FREQUENCY-CONVERSION CONSTANT KSSQB INTELLIGENT FREQUENCY-CONVERSION CONSTANT
PRESSURE WATER SUPPLY EQUIPMENT PRESSURE WATER SUPPLY EQUIPMENT
KSSQB 智能变频恒压给水成套设备 KSSQB 智能变频恒压给水成套设备
设备结构组成 Equipment structure 设备工作原理 Working principle of equipment
变频供水成套主要由：主泵组、变频调速供水控制系统、 Frequency-conversion water supply kit is mainly composed of main 变频调速供水成套设备工作原理如下： The working principle of frequency-conversion speed-regulaating
pump group, frequency-conversion speed-regulating water supply control w a t e r s u p p l y k i t i s a s f o l l o w i n g :
water supply kit is as following:
稳压泵组（可选组件）、稳压气压罐（可选组件）等组成。 系统正常运行时，用户用水管网上的压力传感器对用户的
system, stabilizer pump group (components for option) and stabilizer pneu- When system is under normal operation, the pressure sensor on
matic pot (components for option) etc. 用水水压进行数据采样，并将压力信号转换为电信号，传输到 user's water supply pipeline collects the data of hydraulic pressure, and
turns pressure signal into electric signal, and delivered to PID adjustor.
主泵组 PID调节器，然后与用户设定的压力值进行比较和运算，并将
Main pump group Then compare it with the pre-set pressure value and make calculation.
供水主泵组主要由CR型立式多级离心泵、CDL型立式多级 Main water supply pump group is composed of CR vertical multistage 比较和运算的结构转换为频率调节信号和水泵启动台数信号分 Convert the structure of comparsion and calculation into frequency
管道离心泵和以槽钢和钢板焊接制成的钢制基础构成，一般由 centrifugal pump, CDL vertical multi-stage pipeline-mounted pump as 别送至变频器和可编程控制器（PLC）；变频器据以调节水泵 adjusting signal and signal of started pump number, respectively deliv-
well as steel structure welded by channel steel and armor plate, generally 2 ered to frequency convertor and PLC; frequency convertor will adjust
2~3台同一型号的水泵组成。变频调速供水控制系统主要由交流 电机的电源频率，进而调整水泵的转速；可编程控制器根据
or 3 pumps of the same model. Frequency-conversion speedregulating the rotary speed of pump through adjusting power supply frequency of
变频调器、可编程控制器（微机）、数字PID调节器、外围操 water supply control system is mainly composed of AC frequency- PID调节器传输过来的水泵启动台数信号控制水泵的运转。通 pump motor; PLC will control the operation of pumps according to the
conversion adjustor, PLC (microcomputer), digital PID adjustor, peripheral signal sent by PID adjustor. By these adjustments to make the hydraulic
作执行机构及保护电路、压力传感器、蓄水池水液位控制器 过对水泵的启动和停止台数及其中变频泵转速的调节，将用户
executor, protective circuit, pressure sensor, liquid level controller for pressure in user's pipeline at the pre-set pressure value, and to maintain
（水源缺水保护用）等组成。 reservoir (for protection while lack of water in waterhead), and etc. 管网中的水压恒稳于用户预先设定的压力值，使供水泵组“提 the consistency the water quantity of supply pump with the continuously
changed quantity in pipeline, thus to carry out frequency-conversion
升”的水量与用户管网不断变化的用水量保持一致，达到“变
Stabilizer pump group constant-pressure water supply.
稳压泵组 Stabilizer pump group is mainly composed of one or two small-flow 量恒压供水”的目的。
pumps, which supply head greater or equal to that of main pump. It will
稳压泵组主要由一至二台小流量水泵构成，其供水扬程大
begin to work automatically when the flow rate of pipeline is small or zero 变频调速控制系统
于或等于主泵的供水扬程。它只在管网小流量或零流量是（例
(e.g. at night), functioned to maintain pipeline pressure, to make up small- Frequency-conversion speed-regulaating control system
如夜晚）时自动投入运行维护管网的压力，补允小流量用水或 flow water need or leakage of pipeline, and also to make the main pump
stop while water need is small or zero.
管网的渗漏，同时使主泵在小流量和零流量用水时处于停机状态。
VVVF PLC 数字
Pneumatic pot PID
Digital
Pneumatic pot is a type of airtight vessel. When under large-flow water PID
气压罐 SL 执行机构
supply, it is pressurized by pump and the air inside will be compressed; Actuating mechanism
浮球阀 隔膜式气压罐
气压罐是一种密闭容器。大流量供水时，由水泵加压，罐 when under small-flow or zero-flow water supply, it will be decompressed Float ball valve Diaphragm type
pressure tank
and expanded by compressed air, and the hydraulic pressure stored inside
内贮存的气体被压缩；在小流量或零流量供水时，被压缩气体
Municipal pipe network 浮球 至用户
the pot will be delivered to water distribution pipeline, thus to meet the small-
泄压膨胀，将贮存在罐内的水压入输配水管网，被充用户的小 flow water need or the leakage of pipe. At the same time, to make the main
流量用水或管的渗漏，同时使主泵在小流量和零流量用时处于 pump stop while water need is small or zero. 市
政
开关
停机状态。 管 switch To the user
网
Float
压力传感器 安全阀
泵组 Pressure sensor Safety valve
蓄水池
Pump group
Reservoir
变频调速控制系统示意图
Frequency-conversion speed-regulaating control system drawing
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