In the dark, remove the cup, drink it with wine, and a multitude of things, so much indignity, do not know to pick which cases teeth go, simply all in their minds, quiet sleep. - "Huer this summer"????? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙? ???? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙????? ⊙ ⊙ 400-7055-198 uses XBD-GDL type vertical multistage pipeline fire pump can be widely used in the high-rise building fire, water supply pressurized device as well as hot and cold water. Transport medium for room temperature water with suction speed 2900r / min flow rate 2-108 m3 / h lift 24-200m power 1.0-90KW working conditions the maximum operating temperature: 105 ° C Maximum working pressure: 1.97MPa pump inlet and outlet at the same axis and the same caliber as the valve installed in the pipeline. Caliber size round flange and two oval flange connection used in parallel to reduce the pump unit equipped with power, simplified electronic control equipment. Stainless steel shafts, bushings, outside Simplified; shaft seal with wear-resistant mechanical seal. This type of pump has a smooth operation, low noise, small footprint, easy installation and maintenance. The transmission of the direction of rotation of the pump is driven by the vertical motor through flexible coupling. See from the motor to the pump direction, the water pump clockwise direction. Model meaning the XBD 3.5/0.5-25 GDL X5 XBD of: Electric Fire Pump 3.5: Pump working pressure MpaX10 0.5: pump design flow L / S 25: import and export caliber the GDL: vertical multistage pipeline pumps X5: pump series 5 uses and characteristics XBD-DLL-type vertical multistage fire pump is based on the needs of our fire use, combined with advanced technology to optimize the design and development of a new generation of vertical multistage fire pump in accordance with the standards and norms of the fire. Characteristics of the XBD-DLL fire pump is a high-speed structure, compared with medium-speed fire pump series reduce its unit height and weight is greatly reduced; shaft seal adopts mechanical seal, leak-free pumps, pumping stations, dry cleaning, installation easy maintenance. Head interval. Every 10 meters to set up a file for easy design selection. Residential Fire Pump XBD-DLL is suitable for high-low-rise buildings, hotels, department stores, hospitals, office buildings, fire protection system, can also be used for domestic water supply, industrial and mining enterprises to drainage and the circulation of the air conditioning units and cooling water delivery. Performance range of rated flow: 50L / S speed: 2950r/min Head range: 25-240m diameter :50-150mm Model significance XBD: vertical multistage fire pump 15.6: design point the pressure MPaX10 30: design point flow L / S 100: inhalation caliber MM DLL: vertical multistage high-speed X3: pump series three impeller Structure Fire Pump XBD-DLL vertical multistage segmental structure, with a bolt out of the water the segment clamping linked into one, each one mounted a pump impeller, a guide water leaves the axial force of the pump by hydraulic equilibrium solutions. Residual axial force by two separate bear radial ball bearings and grease lubricated. XBD-DLL fire pump intakes below the outlet of the above, the relative position of the inlet and outlet the 180o assembly factory in the installation according to the actual situation to adjust its direction (other than a pump), water segment can rotate 0o to 90 ° C, 180o, 270 ° in four directions, you can adjust the export installation location as long as the tension bolts out. The XBD-DLL fire pump main parts: the inlet segment, the middle of the water segment, motor base, impeller, guide vane, shaft, guide vanes sets, bearings, block sets. Sets of guide vanes, bearings, impeller wearing parts, maintenance, according to the degree of wear replacement. Bearings: deep groove ball bearing shaft seal: the transmission of high-quality mechanical seal joins dowel pin flexible coupling, accurate and reliable positioning, small vibration, low noise, smooth transmission, by a vertical motor. Look down the pump from the motor is rotated in the clockwise direction. Conditions of use power 380V three-phase 50Hz medium temperature: room temperature water, ambient temperature ≤ 40 ℃ Relative humidity: ≤ 95% of the working environment without dust and combustible gas fire pumps use classification to a non-powered fire pump the motorless fire pump depend on the impeller rotation, the energy not the driving force of the source passed to liquid fire pump. Non-powered fire pump fire pump car fire pump vehicle fire pump installed in the fire truck chassis marine fire pump marine fire pump is installed in a non-powered fire pump the water environment of the ship, offshore working platform. 4 works with the fire pump engineering-oriented fire pump fire pumps for fire hydrant system, water sprinkler systems, foam extinguishing system engineering places. 5 low pressure fire pump normal pressure fire pump rated pressure of not more than 1.8MPa ~ 3.0MPa pressure fire pump middle pressure fire pump rated pressure of 1.6MPa fire pump 6 fire pump high-pressure fire pump high pressure fire pump rated pressure not less than 4.0MPa fire pump. 8 low pressure fire pump middle and normal pressure fire pump can not only provide the medium pressure and can provide a low-pressure fire pump. 9 high and low pressure fire pump high and. normal pressure fire on both pump provides high pressure and can also provide low-pressure fire pump 10 water supply fire pump supplying fire pump for the fire service works with the fire pump 11 regulator fire pump pressure maintaining fire pump used to stabilize the pressure of the pipe network project with a fire pump 12 for fire pump foam liquid foam concentrate fire pump for the transfer of foam extinguishing agent works with the fire pump. balanced pressure foam proportioning device, conveying foam extinguishing agent for foam pump 13 fire pump deep well fire deep well pump using vertical deep well pump works with the fire pump 14 diving fire pump submersible fire pump submersible pumps works 15 ordinary fire pump the general fire pump in addition to the project outside of the deep well, submersible fire pump fire pump fire pump fire pump troubleshooting usually fire pump in the repair process, the fire pump fault diagnosis is a critical link given below several common faults and eliminate measures for targeted fire pump failure diagnosis. 1, no liquid, the insufficient supply liquid or pressure of less than 1) pump no water or not appropriate exhaust eliminate measures: Check the pump casing and the inlet line is all filled with liquid. 2) the speed is too low to eliminate measures: Check the motor wiring is correct, and the voltage is normal or turbine steam pressure is normal. 3) The system head too high to eliminate measures: the head of the inspection system (especially friction loss). 4) suction lift is too high to eliminate measures: check the existing net indenter (inlet line is too small or too long will cause a lot of friction loss). 5) impeller or pipeline by blocking the elimination of measures: check for obstructions. 6) The direction of rotation does not eliminate measures: Check the direction of rotation. 7) produce air inlet line leak elimination measures: check whether the inlet line cavitation and / or air leaks. 8) packing in the stuffing box or seal wear, the air leakage into the pump casing to eliminate measures: Check the packing or seal press needs to be replaced, check whether normal lubrication. 9) of pumping heat or volatile liquid suction head elimination measures: increase the suction head, consult factory. 10) foot valve is too small to eliminate measures: install bottom valve of the correct size. 11) foot valve or inlet pipe submerged deep enough to eliminate measures: consult factory correct immersion depth. Eliminate eddy flapper. 12) impeller gap is too large to eliminate measures: check whether the space. 13) Elimination of impeller damage: Check the impeller, and replace as required. 14) impeller diameter is too small to eliminate measures: consult factory correct impeller diameter. 15) pressure gauge position is incorrect eliminate measures: Check the location is correct, check the outlet nozzle or pipe. Fire pump running while they stop 1) suction lift is too high to eliminate measures: Check the net pressure head (inlet line is too small or too long will cause a lot of friction loss). 2) impeller or pipeline by blocking the elimination of measures: check for obstructions. 3) produce air inlet line leak elimination measures: check whether the inlet line cavitation and / or air leaks. 4) packing in the stuffing box or seal wear, the air leakage into the pump casing to eliminate measures: to check packing or seal in accordance with needs to be replaced. Check whether normal lubrication. 5) of pumping heat or volatile liquid suction head elimination measures: increase the suction head, consult factory. 6) foot valve or inlet pipe Immersion depth is not enough to eliminate measures: consult factory correct immersion depth baffle to eliminate eddy. 7) water pump housing gasket damage elimination measures: Check the gasket to be replaced as required. Fire pump power consumption of too much 1) the direction of rotation does not eliminate measures: Check the direction of rotation. 2) Elimination of impeller damage: Check the impeller, and replace as required. 3) rotating parts killed eliminate measures: Check the internal wear parts is normal clearance. 4) axis bending eliminate measures: the straightening shaft or be replaced as required. 5) speed is too high to eliminate measures: Check the motor winding voltage or delivered to the turbine steam pressure. 6) the head lower than the rating. Pumping too much liquid to eliminate measures: consult factory. Install the throttle, cutting impeller. 7) Liquid heavier than expected value to eliminate measures: Check the specific gravity and viscosity. 8) stuffing box, not the correct filler (filler inadequate, not properly stuffed or running - the filler too tight) Elimination: Check filler refilled stuffing. 9) the bearing lubrication incorrect or bearing wear Elimination: check as required for replacement. 10) running clearance between the wear ring is not correct to eliminate measures: check whether the space. As required to replace the water pump housing and / or impeller wear rings. 11) the pipeline stress on the pump casing is too large to eliminate measures: eliminate stress and manufacturers on behalf of consulting. Eliminate stress, check the alignment. Usually fire pump in the repair process, the fire pump fault diagnosis is a critical link given below several common faults and eliminate measures for targeted fire pump failure diagnosis. Selection knowledge of the fire pump fire pump selection process should be based on the fire pump application engineering, water supply and drainage requirements, five from the amount of liquid delivery device lift liquid nature, piping layout, as well as the operational conditions to be considered. Pump for fire-fighting system is divided into the following categories: fire sprinkler pump, fire hydrant pump, fire pump, fire booster pump, based on the use of the actual situation. The type of pump for fire-fighting system are about the same, just different head and flow. The fire pump is mainly divided into vertical fire pumps and horizontal fire pumps, conveying the flow of liquid fire pumps offer important performance data of the transport of liquid flow rate is directly related to the production capacity of the entire device. The self-test routine testing of the fire pump fire water system provides a way. Prevents corrosion of the fire pump stuck in self-test of the fire pump, not only, but also of the motor overload, short-circuit, overvoltage, phase loss, undervoltage, overtemperature make alarm. The self-test of the fire pump to improve the management level of the single-stage fire pump system XBD regarded as a technological progress. Two kinds of fire pumps self-test mode, can reflect a self-test of the fire pump maintenance, but low-speed self-test is run only in the initial stage of the fire pump starts, you can not completely reflect future fire pump is actually running conditions. In addition, the results of the fire pump self feedback to the fire control center, the need to manually make further judgments. Therefore, the fire pump self-test mode can not completely replace the manual fire pump maintenance and management. 2 self-test analysis of the way the normal speed self-test mode in a certain period of time to simulate the actual working conditions of the fire water supply. Detect fire pump startup, normal operation of the whole process. Require improvements in pipeline design. The most important thing is to prevent bypass solenoid valve failure of the pipeline, must be done in the open, when the self-test and self-test is completed in a timely manner Close. Low-speed self-test mode without fire pump piping changes, but its detection is only a stage fire pump normal conditions. Fire pump can be divided into direct start and indirect power needs indirect start. Y / △ buck starts indirectly start, lowering blood pressure to start, start soft starter. Fire pump running, the soft-start start only a preliminary stage of the fire pump running, and subsequently is the normal run. The conversion method also failed to run the power frequency stage. However, to prevent corrosion of the fire pump, low-speed self-test or a role. In contrast, it has a low frequency drive, low-speed rotation, the characteristics of the device low-power operation. Comparison of 3 self-test mode in the fire pump self-test mode, self-test mode in normal speed and low-speed self-test mode to play in the maintenance of fire pump a certain role. From the point of view of the maintenance and management, they can use in fire water system. Relatively constant speed self-test reflect the actual operating conditions of the fire pump. From the point of view of the cause of the malfunction of the fire pump, fire pump long-term without fault caused the bite of the shaft of the pump unit. Motor start the incomplete condition less of a problem, it is too much emphasis on the running of the fire pump complete condition, its significance is not great. Constant speed self-test method is applicable to the fire pump absorb water from the fire pond design should be reasonable to consider the layout of the pipeline. There are some problems in the operation, and soon may cause overpressure in engineering applications is not very appropriate. The self-test mode in normal speed and low-speed self-test mode has its own characteristics. Low-speed self-test mode is not comprehensive detection of conditions on the operation of the fire pump, fire pump piping design no special requirements, basically can be applied to the technical requirements of the self-test of the fire pump. It is more suitable for the fire pump is directly absorb water from the fire pump offer political pipe network.