Introduction
GDL vertical pipe multistage centrifugal pump is divided into GDL type, GDLS type, GDL-B type, GDLS-B type,It is a new generation product designed and manufactured by our company on the basis of outstanding pump type in foreign countries combined with user's requirements and relevant fire protection standards and according to JB / TQ6435-92 standard. Pump suction, discharge outlet located in the same line. Rotor components from the shaft, impeller, impeller sleeve, bushings and other components, into the water section, the middle section of the water with tension bolts. Shaft seal with a mechanical seal, pressure chamber with balanced water for lubrication and cooling. Is the major industries of hot and cold water or physical and chemical properties similar to water and other liquid delivery of the best pump. All products using computer design and optimization, the company has strong technical force, rich experience in production and improve the detection means, so as to ensure product quality is stable and reliable. Widely used in high pressure operation of the system hot and cold water circulation and booster, high-rise building multiple pumps in parallel water supply, fire fighting, boiler feed water and cooling water systems and a variety of irrigation fluid delivery.
Features
1, GDL Vertical Multistage Centrifugal Pump is a vertical structure with a small footprint. The center of gravity of the pump coincides with the center of the pump foot, so it runs smoothly with little vibration and long service life.
2, GDL-type vertical multistage centrifugal pump with the same caliber and the same horizontal center line, without changing the pipeline structure, can be directly installed in any part of the pipeline, the installation is extremely convenient.
3, the motor plus rain cover can be placed directly in the outdoor use, without the need to build pump room, greatly saving capital investment.
4, GDL Vertical Multistage Centrifugal Pump Head can be changed by changing the pump series (the number of impeller) to meet different requirements, so a wide range of applications.
5, the shaft seal with carbide mechanical seal, reliable seal, no leakage, mechanical loss.
6, energy efficient, beautiful appearance.
7, Note 50 caliber inner casting above forming.
Conditions of use
1, used to transport clean water or physical and chemical properties similar to clear liquid;
2, the liquid should be transported without solid particles, no fiber, no corrosive, no risk of explosion;
3, the maximum liquid temperature does not exceed 120 ºC;
4, the maximum working pressure does not exceed 2.5MPa;
5, power for 3-phase 380V, 50HZ. Voltage fluctuations within ± 5%;
6, the ambient temperature should be below 40 ºC, relative humidity below 95%.
7,Conveyor containing corrosive media and hot liquid, please put forward when ordering, so that the use of special materials to meet the conditions.
Application
GDL vertical multi-stage centrifugal pump is especially suitable for boiler feed water, but also widely used in pressure vessel water supply, hot water circulation, high building water supply, farmland irrigation, fire pressurization, hydraulic flushing, food, brewing, medicine, chemical industry, aquatic products Breeding, environmental protection, chemical processes and machine tools and other industries, as the water supply and drainage of power equipment.
Technical Parameters
Installation Instructions
1, the installation of pipe weight should not bear on the pump, or vulnerable ring pump;
2, the pump is the overall structure of the motor, the factory has been factory calibration, so no need to adjust the installation, so the installation is very convenient;
3, before installing the pump should carefully check whether there is any impact on the pump runner pump running hard materials, (such as stones, iron sand, etc.) in case of pump running back loss of flow components;
4, into the installation must be tightened anchor bolts, and each interval in fact, should check the pump during the passage to prevent its loosening, so as to avoid the pump start violent vibration and affect the performance;
5, In order to maintain the convenience and safety, install a regulating valve on the pump inlet and outlet piping and install a pressure gauge near the pump inlet and outlet. For high lift, in order to prevent water hammer, it should also be installed in front of the outlet gate Check valve only to cope with sudden power outages and other lost power accidents, so as to ensure that the pump running in the best conditions, increasing the life of the pump;
6, the pump for a suction occasion, should be equipped with the end of the valve, and the inlet pipe should not have too many corners at the same time there may be leakage, leakage phenomenon, so as not to affect the pump suction performance;
Start and stop
Preparation before starting
1, pull the coupling by hand, the impeller should be no card grinding phenomenon, flexible rotation;
2, open the inlet valve, open the exhaust valve so that the liquid filled the entire pump chamber, and then close the exhaust nozzle;
3, such as the delivery of hot liquid, before starting should be preheated, heating rate of 50 ºC / h, the pump is preheated by the continuous circulation of liquid delivery to achieve, so that all parts of the heated uniform;
4, should be manually activated GDL vertical multi-stage pump several times so that the lubrication water into the mechanical seal face;
5, move the motor, the steering is correct.
Start and run
1, fully open the inlet valve, close the discharge pipe door;
2, connect the power, when the pump reaches the normal speed, gradually open the valve on the discharge pipe and adjust to the required conditions;
3, observe the instrument readings, check the shaft seal leakage, the normal timing of mechanical seal leakage 3 leakage / min, check the motor, the bearing temperature ≤ 70 ºC, if abnormal, should be promptly addressed.
parking
1, gradually close the discharge pipe valve;
2, close the inlet valve
3, such as the ambient temperature is below 0 ºC. Should drain the pump liquid, so as not to freeze crack pump;
4, such as long-term disabled, the pump should be disassembled clean, packaging and custody.
Repair and maintenance
In operation, maintenance and care
1, the inlet pipe must be highly sealed, can not leak, leak;
2, GDL vertical multistage centrifugal pumps are prohibited from long-term operation under cavitation;
3, prohibit the GDL-type vertical multistage centrifugal pump operating in high flow conditions, the motor over-current long-term operation;
4, Regularly check the motor current in the pump operation, try to make the pump run in the design conditions;
5, GDL-type vertical multistage centrifugal pump in operation should be someone care, so as to avoid accidents;
6, GDL-type vertical multistage centrifugal pump for each 500 hours of operation to refuel;
7, GDL-type vertical multistage centrifugal pump after long-term operation, due to mechanical wear and tear, so that the unit noise and vibration increase, parking inspection, the need to change into the vulnerable parts and bearings, unit overhaul period is generally one year.
Mechanical seal maintenance and repair
1, mechanical seal lubricating fluid should be clean without solid particles;
2, mechanical seal is strictly prohibited in the case of dry grinding;
3, GDL-type vertical multistage centrifugal pump (motor) should be activated a few times before starting, so as not to cause a sudden start-up mechanical seal rupture damage.
Causes of failure and troubleshooting
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First,1:multi-stage centrifugal pump product name and model 2:multi-stage centrifugal pump diameter 3:multistage centrifugal pump head (m) 4:multi-stage centrifugal pump motor power (KW) 5: multistage centrifugal pump speed (r / min) Centrifugal pump voltage(V) 6:multistage centrifugal pump suction (m) 7:multistage centrifugal pump with accessories so that we for your correct selection.
Second, if the design unit has selected my company's multi-stage centrifugal pump product model, please press the multi-stage centrifugal pump model directly to the Yangtze River Pump Company Sales Order.
Third, when the use of the occasion is very important or the environment is more complex, please try to provide design drawings and detailed parameters, by our Yangtze River Pumps technical experts for your review checks.
GDL vertical pipe multistage centrifugal pump is divided into GDL type, GDLS type, GDL-B type, GDLS-B type,It is a new generation product designed and manufactured by our company on the basis of outstanding pump type in foreign countries combined with user's requirements and relevant fire protection standards and according to JB / TQ6435-92 standard. Pump suction, discharge outlet located in the same line. Rotor components from the shaft, impeller, impeller sleeve, bushings and other components, into the water section, the middle section of the water with tension bolts. Shaft seal with a mechanical seal, pressure chamber with balanced water for lubrication and cooling. Is the major industries of hot and cold water or physical and chemical properties similar to water and other liquid delivery of the best pump. All products using computer design and optimization, the company has strong technical force, rich experience in production and improve the detection means, so as to ensure product quality is stable and reliable. Widely used in high pressure operation of the system hot and cold water circulation and booster, high-rise building multiple pumps in parallel water supply, fire fighting, boiler feed water and cooling water systems and a variety of irrigation fluid delivery.
Features
1, GDL Vertical Multistage Centrifugal Pump is a vertical structure with a small footprint. The center of gravity of the pump coincides with the center of the pump foot, so it runs smoothly with little vibration and long service life.
2, GDL-type vertical multistage centrifugal pump with the same caliber and the same horizontal center line, without changing the pipeline structure, can be directly installed in any part of the pipeline, the installation is extremely convenient.
3, the motor plus rain cover can be placed directly in the outdoor use, without the need to build pump room, greatly saving capital investment.
4, GDL Vertical Multistage Centrifugal Pump Head can be changed by changing the pump series (the number of impeller) to meet different requirements, so a wide range of applications.
5, the shaft seal with carbide mechanical seal, reliable seal, no leakage, mechanical loss.
6, energy efficient, beautiful appearance.
7, Note 50 caliber inner casting above forming.
Conditions of use
1, used to transport clean water or physical and chemical properties similar to clear liquid;
2, the liquid should be transported without solid particles, no fiber, no corrosive, no risk of explosion;
3, the maximum liquid temperature does not exceed 120 ºC;
4, the maximum working pressure does not exceed 2.5MPa;
5, power for 3-phase 380V, 50HZ. Voltage fluctuations within ± 5%;
6, the ambient temperature should be below 40 ºC, relative humidity below 95%.
7,Conveyor containing corrosive media and hot liquid, please put forward when ordering, so that the use of special materials to meet the conditions.
Application
GDL vertical multi-stage centrifugal pump is especially suitable for boiler feed water, but also widely used in pressure vessel water supply, hot water circulation, high building water supply, farmland irrigation, fire pressurization, hydraulic flushing, food, brewing, medicine, chemical industry, aquatic products Breeding, environmental protection, chemical processes and machine tools and other industries, as the water supply and drainage of power equipment.
Technical Parameters
| Q=1.4~192m³/h | H=33~230m |
| n=2900r/min | P=1.1~132kw |
| Dna=25~150mm | DNm=25~150mm |
| temperature range=-15ºC~120ºC | Work pressure≤2.5Mpa |
1, the installation of pipe weight should not bear on the pump, or vulnerable ring pump;
2, the pump is the overall structure of the motor, the factory has been factory calibration, so no need to adjust the installation, so the installation is very convenient;
3, before installing the pump should carefully check whether there is any impact on the pump runner pump running hard materials, (such as stones, iron sand, etc.) in case of pump running back loss of flow components;
4, into the installation must be tightened anchor bolts, and each interval in fact, should check the pump during the passage to prevent its loosening, so as to avoid the pump start violent vibration and affect the performance;
5, In order to maintain the convenience and safety, install a regulating valve on the pump inlet and outlet piping and install a pressure gauge near the pump inlet and outlet. For high lift, in order to prevent water hammer, it should also be installed in front of the outlet gate Check valve only to cope with sudden power outages and other lost power accidents, so as to ensure that the pump running in the best conditions, increasing the life of the pump;
6, the pump for a suction occasion, should be equipped with the end of the valve, and the inlet pipe should not have too many corners at the same time there may be leakage, leakage phenomenon, so as not to affect the pump suction performance;
Start and stop
Preparation before starting
1, pull the coupling by hand, the impeller should be no card grinding phenomenon, flexible rotation;
2, open the inlet valve, open the exhaust valve so that the liquid filled the entire pump chamber, and then close the exhaust nozzle;
3, such as the delivery of hot liquid, before starting should be preheated, heating rate of 50 ºC / h, the pump is preheated by the continuous circulation of liquid delivery to achieve, so that all parts of the heated uniform;
4, should be manually activated GDL vertical multi-stage pump several times so that the lubrication water into the mechanical seal face;
5, move the motor, the steering is correct.
Start and run
1, fully open the inlet valve, close the discharge pipe door;
2, connect the power, when the pump reaches the normal speed, gradually open the valve on the discharge pipe and adjust to the required conditions;
3, observe the instrument readings, check the shaft seal leakage, the normal timing of mechanical seal leakage 3 leakage / min, check the motor, the bearing temperature ≤ 70 ºC, if abnormal, should be promptly addressed.
parking
1, gradually close the discharge pipe valve;
2, close the inlet valve
3, such as the ambient temperature is below 0 ºC. Should drain the pump liquid, so as not to freeze crack pump;
4, such as long-term disabled, the pump should be disassembled clean, packaging and custody.
Repair and maintenance
In operation, maintenance and care
1, the inlet pipe must be highly sealed, can not leak, leak;
2, GDL vertical multistage centrifugal pumps are prohibited from long-term operation under cavitation;
3, prohibit the GDL-type vertical multistage centrifugal pump operating in high flow conditions, the motor over-current long-term operation;
4, Regularly check the motor current in the pump operation, try to make the pump run in the design conditions;
5, GDL-type vertical multistage centrifugal pump in operation should be someone care, so as to avoid accidents;
6, GDL-type vertical multistage centrifugal pump for each 500 hours of operation to refuel;
7, GDL-type vertical multistage centrifugal pump after long-term operation, due to mechanical wear and tear, so that the unit noise and vibration increase, parking inspection, the need to change into the vulnerable parts and bearings, unit overhaul period is generally one year.
Mechanical seal maintenance and repair
1, mechanical seal lubricating fluid should be clean without solid particles;
2, mechanical seal is strictly prohibited in the case of dry grinding;
3, GDL-type vertical multistage centrifugal pump (motor) should be activated a few times before starting, so as not to cause a sudden start-up mechanical seal rupture damage.
Causes of failure and troubleshooting
| Trouble phenomenon | May cause the reason | To exclude |
1,The pump does not water | Inlet valve is not open, out of the pipeline obstruction, Impeller flow blockage Motor running in the wrong direction, motor phase loss is very slow speed Suction tube leaks Pump is not filled with liquid, the pump cavity with air Inadequate supply of imported water, suction stroke is too high, leakage valve at the end Pipeline resistance is too large, inappropriate pump selection | Check, remove obstruction Adjust the motor steering, tighten the motor wiring Tighten the sealing surface, remove the air Open the pump cover or open the exhaust valve and drain the air Stop checking, adjusting Reduce the pipe bend, re-select the pump |
2, The first pump to check the flow of less than | Pipe, pump runner or impeller blockage, scale deposition ... Low voltage Impeller wear | First exclude 1 Remove the obstruction and readjust the valve opening Regulated Replace the impeller |
3,The power is too large | Than the rated flow Suction stroke is too high Pump bearing wear | Tear to adjust the flow, off the small outlet valve Lower Replace the bearing |
| 4, Noise vibration | Tube support instability Liquid mixed with gas Cavitation produces Bearing damaged Motor overloaded to run | A solid pipe Raise suction pressure and exhaust Reduce the degree of vacuum Replace the bearing Adjust by 5 |
| 5, The motor heat | Flow is too large, overload operation Partial friction Motor bearing damaged Low voltage | Off the small outlet valve Check exclusion Replace the bearing Regulated |
| 6,Pump leakage | Mechanical seal wear The pump has sand holes or cracks The sealing surface is not smooth Loose mounting | Screws Welding repair or replacement Trimming Tighten |
First,1:multi-stage centrifugal pump product name and model 2:multi-stage centrifugal pump diameter 3:multistage centrifugal pump head (m) 4:multi-stage centrifugal pump motor power (KW) 5: multistage centrifugal pump speed (r / min) Centrifugal pump voltage(V) 6:multistage centrifugal pump suction (m) 7:multistage centrifugal pump with accessories so that we for your correct selection.
Second, if the design unit has selected my company's multi-stage centrifugal pump product model, please press the multi-stage centrifugal pump model directly to the Yangtze River Pump Company Sales Order.
Third, when the use of the occasion is very important or the environment is more complex, please try to provide design drawings and detailed parameters, by our Yangtze River Pumps technical experts for your review checks.