Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    Water supply equipment with pressurization and fire stabilization
    Water supply equipment with pressurization and fire stabilization
    Water supply equipment with pressurization and fire stabilization
    Water supply equipment with pressurization and fire stabilization
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    • Water supply equipment with pressurization and fire stabilization
    • Water supply equipment with pressurization and fire stabilization
    • Water supply equipment with pressurization and fire stabilization
    • Water supply equipment with pressurization and fire stabilization

    Category:

    Constant Pressure Water Supply Equipment

    Keywords:

    Pump

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    Water supply equipment with pressurization and fire stabilization

    Flow: 0-5000m³/h 

    Lifting height: 1-300m 

    Price: 3.08-30.8 ten thousand 

     

    The water supply equipment with pressure boosting and stabilization for fire extinguishing is a new type of efficient water supply equipment developed and improved according to the national fire extinguishing standard "Fire design code for high-rise civil buildings" and the Ministry of Public Security standard "Performance requirements and test methods for fire extinguishing pressure water supply equipment." 

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    Product Description Product Specifications Why Choose Us? FAQ

    Product parameters

    Composition of the water supply equipment with pressure increase and stabilization for fire protection
    　　The fire water supply system is mainly composed of air pressure tank, water pump, control cabinet, control instruments, pipe fittings, etc. The pump body consists of motor and pump. The fire pressure increase series belongs to constant pressure water supply equipment, designed and manufactured according to the national standard design catalog 98S205 and others, being special equipment for pressure increase and stabilization for fire protection. It can always maintain the pressure of the pressure gauge (i.e., the water pressure in the user's network) equal to the value set by the user. It can be used for residential or industrial water supply. The forms of composition of the water supply system are:
    　　1. The water supply equipment with pressure increase and stabilization for fire protection is connected to the municipal network for constant pressure water supply; when the supply pressure can meet the demand, all pumps stop automatically. Otherwise, the constant pressure supply equipment is activated to increase the pressure and meet the water usage requirements.
    　　2. Small pumps or air pressure tanks are added to eliminate electrical consumption in small flow or zero flow; when the supply pressure is low, the main pump stops automatically and the small pump or air pressure tank operates.
    　　The structure of the pump includes pump body, impeller, pump cover, mechanical seal, and other components; the pump and motor are coaxial. The axial force of the pump is balanced by a balance ring in the impeller. The inlet and outlet of the pump are on the same horizontal axis and have the same diameter. The pump has an installation base to facilitate installation and increase stability during operation.
    　　1) The equipment is divided according to the fire water supply system:
    　　a. Water supply equipment with pressure increase and stabilization for fire hydrant system; b. Water supply equipment with pressure increase and stabilization for automatic sprinkler system; c. Water supply equipment with pressure increase and stabilization combined for hydrants and automatic sprinkler system.
    　　2) The equipment is divided according to the installation position:
    　　a. Water supply equipment with pressure increase and stabilization for fire protection of upper type; b. Water supply equipment with pressure increase and stabilization for lower type sprinklers and hydrants.
    　　3) The equipment is divided according to the configuration of the air pressure tank:
    　　a. Water supply equipment with pressure increase and stabilization with vertical tank; b. Water supply equipment with pressure increase and stabilization with horizontal tank; c. Water supply equipment with pressure increase and stabilization with air recharge; d. Water supply equipment with pressure increase and stabilization with capsule tank.
     
    Operating principle and characteristics of the water supply equipment with pressure increase and stabilization for fire protection
    　　The constant pressure fire water supply equipment first sets the supply pressure value according to the user's requirements, then it is energized to operate. The pressure sensor monitors the network pressure and converts it into an electrical signal sent to the programmable controller or microcontroller. After analysis, the signal is sent to the inverter to control the operation of the pump. When water consumption increases, the output voltage and frequency increase, the pump speed increases, and the flow rate increases. When consumption decreases, the pump speed decreases to reduce the flow, maintaining the network pressure at the set value. In operation with multiple pumps, soft start is performed sequentially, changing from variable frequency to fixed frequency until pressure and flow are satisfied, achieving cyclic control of the pumps. In nighttime operation with low flow, the pump with inverter maintains operation and can stop to maintain pressure.
    　　1) Start mode: the equipment has three control modes: automatic, manual, and remote fire link. It can be started locally with an emergency button or remotely from the fire center. The inverter cabinet has a fire start/stop signal interface; upon receiving the signal, it enters the state of constant pressure water supply for fire protection. If a pump fails or the flow is insufficient, another pump with inverter is automatically activated. When the signal ceases, it returns to the normal constant pressure state. To prevent failures of the automatic inverter, the system has a manual start function at fixed frequency.
    　　2) Pressure stabilization function: in automatic mode without fire signal, the equipment operates in constant pressure state with inverter. The pressure gauge collects the limit pressure signal of the network; when the pressure drops to the lower limit, the fire pump operates with inverter to replenish water to the network. Upon reaching the upper limit, the pump stops and the air pressure tank maintains pressure by replenishing water.
    　　3) Automatic pump switching function: the main fire pump has a periodic rotation function, with a cycle set by the inverter cabinet program, generally 24 hours. If a failure is detected in one pump, it immediately switches to another for stable operation and displays an alarm.
    　　4) Automatic inspection function (manual): although the fire pumps switch automatically to maintain pressure, it is necessary to inspect them periodically to prevent accidental factors from causing a pump to not operate for a long time and oxidize. The inspection cycle and time are set by program. If there is a failure during inspection, the system automatically alerts.
    　　5) Intelligent fire function: in case of fire or severe leak in the network without fire signal, the equipment automatically enters the state of high constant pressure water supply and issues an alarm.
    　　6) Multiple protection functions and failure alarms: the system has protection and alarm against phase failure, overload, grounding, low voltage, etc.
    　　7) Control interface: the system has a water level interface for low water alarm. It also has link and feedback interfaces with the fire center for automatic remote start and feedback of pump status. According to requirements, a standard RS485 communication interface can be provided for remote monitoring.
    　　8) It can be equipped with a dual power source switching device, which automatically switches to backup power in case of failure of the main source.
     
    Scope of application of the water supply equipment with pressure increase and stabilization for fire protection
    　　1. Residential water supply in new urbanizations, villas, office buildings, and integrated buildings.
    　　2. Residential water supply for high-rise buildings, fire protection use, hotels, and restaurants.
    　　3. Renovation of traditional water supply systems by air pressure and pressure in surface tanks.
    　　4. Cold and hot water supply systems for boilers.
    　　5. Intermediate pumping stations and secondary pressure increase in drinking water plants.
    　　6. Water supply for production and life in industrial and mining companies, pressure stabilization in networks.
    　　7. Water supply systems for circulation and cooling of various types.
    　　8. Residential water supply and fire protection with insufficient pressure in the drinking water network.
     
    Friendly reminder: Please consult the performance parameters directly on the pump selection page.
    Changsha Zhonglian Pump Industry Co., Ltd.

    Why Choose Us?

    Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.

    Changsha Zhonglian Pump Industry Co., Ltd.
    Changsha Zhonglian Pump Industry Co., Ltd.

    FAQ

    Q

    What products do you mainly produce?

    A

    Zoomlion Pump Industry manufactures various large industrial centrifugal pumps. The main products include: self-balancing multistage pumps, multistage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condenser pumps, and more.

    Q

    Can you help me choose a model?

    A

    Of course! If the water pump model is not selected accurately, it can cause significant problems. After you take it back, it might be either too small to meet the usage requirements or too large, resulting in higher electricity and fuel costs, increasing the operating expenses.

    Q

    Why is the price quotation so slow?

    A

    Because centrifugal pumps are non-standard custom products with many models and a wide price range. Even for the same model, the price varies greatly depending on the materials and configurations used. Taking the most common pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clearly confirm the relevant information to provide you with an accurate price. Normally, if you provide comprehensive information, we can quote within 5 minutes.

    Q

    What information should I provide when I need a quote?

    A

    Usually, if you want to get an accurate quote, it is recommended that you provide us with the following information: pump flow rate, head, on-site operating voltage, frequency, temperature of the conveyed liquid, pH value, solid particle content, on-site installation conditions (horizontal or vertical installation), and other related details. If you are not very familiar with these, it’s okay; our sales manager will assist you in determining them.

    Q

    Do you have centrifugal pumps in stock?

    A

    There are many models and configurations of centrifugal pumps. Except for a small number of commonly used standard models that are in stock, the vast majority of models and configurations are not stocked and are customized products. We need to first select the pump based on your site conditions such as flow rate, head, medium temperature, pH value, and installation conditions. After determining the pump model and configuration, we can then place an order with the workshop for production.

    Q

    What is your usual delivery time?

    A

    Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。

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