Product Brief
The inlet pipe of the stainless steel box pump integrated equipment is directly connected with the tap water pipe network. The water is driven by the residual pressure of the tap water pipe network into the inlet pipe of the equipment. The pressurized water pump of the equipment continues to pressurize on the basis of the residual pressure of the inlet water, raising the water supply pressure to the pressure required by the user, and then supplies water to the outlet pipe network. When the water consumption of the user is greater than the water supply of the tap water pipe network, the pressure of the inlet pipe network When the pressure of the water inlet of the equipment drops to less than 0 (or the set protection pressure of the pipe network), the negative pressure prevention and control device in the equipment will automatically start to work, and adjust the operation state of the equipment until the equipment is shut down for standby, so as to ensure that the pressure of the water inlet pipe network will not drop any more, which will cause adverse impact on the water pipe network; when the water supply capacity of the water pipe network is restored, the pressure of the water inlet pipe network will be increased When the power is restored to above the protection pressure, the equipment will automatically start and resume normal water supply; when the residual pressure of the tap water pipe network meets the water supply requirements of the user, the equipment will automatically enter the sleep state, and the tap water pipe network will directly supply water to the user, and when the water supply is insufficient, the equipment will automatically resume operation; when the user does not use water or the water consumption is very small, the equipment will automatically enter the shutdown sleep state, which is set by The small flow pressure stabilizing and pressure maintaining tank at the outlet side of the standby water maintains the quantity of water used by users and the leakage of the pipe network. When the pressure stabilizing and pressure maintaining tank cannot maintain the required pressure of the water supply pipe network, the equipment will wake up automatically and resume normal operation. Make full use of the residual pressure of the water pipe network during the operation of the equipment.
Product characteristics
1. Less investment in equipment: the equipment occupies a small area, does not need to build a pump house and a large reservoir or a large water tank, saves a lot of investment, and makes full use of the primary water supply pressure of the water pipe network. The selection of booster pump should be reduced, and the equipment investment should be reduced.
2. The energy saving effect is obvious: the equipment is connected with the water pipe network in series to use the residual pressure of the pipe network for water supply; moreover, since the selection and start of the pressure pump or another pump can meet the demand of water supply, the pump will be fully started at the peak of water consumption, thus reducing the operation cost of the equipment and saving energy by 30% - 90%; and the water in the water tank can be regularly and automatically circulated without cleaning the water tank regularly, It can save maintenance cost.
3. Sanitary and pollution-free: the water tank is made of food grade stainless steel, and the water in the water tank can be recycled automatically on a regular basis without secondary pollution.
4. Easy to install: only connect the water inlet and outlet pipes when the equipment arrives at the site. The construction period is short, the installation is simple, the equipment technology is advanced, the operation is stable and the maintenance is simple.
5. Power failure will not stop water supply: since the equipment is equipped with bypass, the water pump will stop working in case of power failure, but the pressure of primary water supply pipe network can also be used to maintain water supply.
6. Excellent equipment performance: the whole set of equipment is made of stainless steel; it has beautiful appearance, energy saving, stable operation, low noise, and is really green and energy-saving equipment.
Scope of application
1. Newly built residential quarters, office buildings, hotels and other domestic water.
2. Fire fighting water for which the pressure of low-level tap water cannot meet the requirements.
3. The original air pressure water supply equipment can be transformed to make full use of the original air pressure tank.
4. For the built water pool, the water supply mode shared by the non negative pressure equipment and the pool can be used to further save energy.
5. Water supply intermediate booster pump station of water plant.
6. Production and domestic water of industrial and mining enterprises.
Equipment Selection
Pump unit
The model of fire pump shall be determined according to the design flow and required fire water supply pressure of the fire water supply system in the project. The water pump is one for use and one for standby, and the pressure at zero flow shall not exceed 140% of the design pressure of the system; when the system flow is 150% of the rated flow of the water pump, the pressure shall not be lower than 65% of the rated pressure.
Fire water tank
According to the fire design flow and fire duration of each single fire water supply system in the project, the fire water consumption of each single fire water supply system is calculated. When a project is composed of multiple fire water supplies, the total fire water consumption of a fire is the sum of the fire water consumption of each single system. Thus, the effective volume of fire water tank can be determined, and the size of fire water tank can be determined according to the volume of water tank and the actual situation on site.
Pump house
The width of the main channel in the pump house shall not be less than 1.2m, and the width of the channel in front of the electrical control cabinet shall not be less than 1.5m; the top of the pump house shall be provided with a 2m × 2m access opening, which shall be 200 mm higher than the ground, and the top of the access opening shall be equipped with a slide type top cover, which is convenient for opening and closing; the pump house shall be provided with an access ladder; the top of the pump house shall be provided with a ventilation pipe, which shall be 1.5m higher than the ground.
technical requirement
water tank
1) The water tank can be made of hot-dip galvanized steel plate, stainless steel plate, hot-dip galvanized steel plate and stainless steel plate or composite PE. The specifications of the water tank module are 1m × 1m, 1m × 2m, 1m × 3M, 0.5m × 0.5m, 1m × 0.5m and so on. The bolts required for assembling and distributing the water tank shall be complete sets of hot-dip galvanized bolts or stainless steel bolts. The water tank module is lined with rubber gasket.
2) The design and manufacture of water tank shall comply with the requirements and regulations of building standard design sample volume 02s101 rectangular water supply tank and fire water tank.
3) When the volume of the water tank is 500m3 in heavy rain, a separation shall be set, and each separation can be used separately; when the water tank is more than 1000m3, two fire water tanks that can be used separately shall be set.
4) When the water tank is equipped with a separate water tank, valves shall be set on the connecting pipes of different separated and independent water tank spaces to facilitate maintenance in case of equipment failure.
Piping layout
1) The internal pipeline of the water pump unit is composed of hot-dip galvanized steel pipeline, and the inlet of the water pump suction pipe shall be set in the suction tank in the water tank or the cyclone preventer shall be used.
2) Each system pump unit shall be equipped with manual inspection, automatic low-frequency inspection, flow detection pipeline and water test pipeline in addition to the start and stop controlled by the control cabinet.
Accident drainage
1) The pump house shall be equipped with emergency drainage facilities. Two submersible sewage pumps (main pump jywq100-15-7.5, auxiliary pump jywq20-15-1.5) shall be used for emergency drainage. When the emergency water level is reached, the two pumps can work at the same time. The submersible sewage pump for emergency drainage shall be set in the sump, and its size shall not be less than 1m × 1m × 1m (length × width × depth).
2) Hot dip galvanized steel pipe is used for emergency drainage pipe.
Ventilation and dehumidification
1) Mechanical ventilation and air exchange facilities shall be set in the pump room, and the air exchange frequency shall not be lower than the requirements of relevant specifications. The vent at the top of pump house shall be provided with insect screen and rain proof shutter.
2) Industrial dehumidification equipment shall be set in the pump room where the pump set installed underground is located, and the dehumidification equipment model shall meet the dehumidification effect in the pump room. At the same time, the condensate on the wall of the pump room can flow into the sump through the guide groove at the root of the wall.
Equipment foundation
1) The equipment foundation shall be constructed on undisturbed soil. When it is undisturbed soil, the soil layer shall be compacted, and the 37 lime soil shall be compacted.
2) The size, concrete grade and reinforcement of equipment foundation shall be determined after design and calculation by structural professionals.
debugging
The pump station shall be installed by the manufacturer; when the equipment is commissioned, it shall be delivered for use after being commissioned under the guidance of the manufacturer.
Operation and maintenance
No special person is required to be on duty for the operation of the pump station, but regular inspection, inspection and maintenance are required.
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