In leak-free pumps, shield pumps are more widely used. Shielding pump with a stator winding and rotor windings were placed in a sealed metal cylinder motor drive shield, pump housing and drive motor housing flange seal connected to the pump to remove the pump shaft seal structure. Suitable for transporting valuable liquids or radioactive liquids.
Structure type:
1, the motor and pump integrated structure, pumps and motors for the coaxial connection;
2, the inner side of the motor stator and the rotor has a shield sleeve, the inner side of the shield sleeve and pump connectivity;
3, the installation of sub-horizontal and vertical two
4, the motor to cancel the cooling fan, through the stator and the rotor between the circulating medium to cool the motor, while using the motor base surface cooling.
Features:
1, motor and pump integrated structure, all static seal, the pump is completely leak-free;
2, fully enclosed, non-leakage structure can transport toxic and hazardous liquid substances;
3, the use of shielded water-cooled motor and cooling fan to cancel the quiet low-noise operation of the pump, suitable for high ambient noise requirements of the occasion;
4, the use of transport medium lubrication of graphite sliding bearings, lower operating noise and without manual refueling, reducing maintenance costs; In recent years, the bearing materials and an increase of silicon carbide SIC, superhard, better life than graphite bearings.
5, the vertical structure can be installed on the pipe like a valve, easy and quick installation, and only need to remove the motor and impeller can be repaired, without removing the pipe.
6, can be installed with shock absorbers or shock absorbers to run, so that pump noise in operation is lower.
Electric pump shielding Specific forms:
1, conveying the basic type of ordinary materials;
2, Conveying the reverse circulation of vaporized materials and reverse pressure type;
3, conveying high-temperature materials, high temperature separation type, usually below 350 degrees temperature;
4, the delivery of the material particles of mud type;
5, conveying high melting point material of high melting point type;
6, conveying material level lower than the pump inlet self-priming, self-priming height should be less than 5 meters.
Shielded pump applications
First, civil:
1, ground source heat pump air conditioning circulating water system;
2, Lithium bromide air conditioning unit air-conditioning pumps, transformers pumps, locomotive pumps;
3, heating heating circulating water system;
4, fire water booster system;
5, tap water pressurization system.
Second, industrial and military space:
1, chemical and pharmaceutical industries with toxic and hazardous liquid transport;
2, space rocket launch fuel before filling;
3, nuclear-powered nuclear shield pump.
Why say closed cooling tower is energy saving and environmental protection equipment, more and more users are using this kind of equipment to replace the original equipment (open tower), we can through data analysis and comparison, the two energy data accounting can be obvious. Energy consumption is basically two major aspects, one is water, the other is electricity. Both are energy costs that no cooling tower can escape, unless you leave the equipment on.
First of all, look at the consumption of water. Water is generally consumed in two aspects. One is the flying overflow after spraying, and the other is the evaporation consumption of water.
Let's look at the open cooling tower, the spray water of the tower is basically between two and three percent of the overflow rate, if we according to the daily operation of 10 hours, excluding holidays, 280 days of operation. According to the actual open cooling tower flow of 6000 cubic meters per hour to calculate. 6000*2%*10*280= 336,000 tons of water, and the same closed cooling tower, its spray flying overflow is very small, because after all, the spray work is carried out in the tower, almost can be controlled in a few thousandths, we calculate according to 5 thousandths, the same is 10 hours of work, 280 days a year operation, To achieve the same cooling amplitude is basically 4,500 tons per hour of closed cooling tower is enough, then the calculation results: 4,500 *0.5%*10*280= 63,000 tons, it is not difficult to see, because of the different design structure caused by the waste of spraying water resources, more than 200,000 tons of terror. The bigger the pool of the open tower, the more wasted water, because the evaporation area increases, and the closed cooling tower has no pool, so the consumption here is zero. Judging from the price of a ton of water, just such a equipment, a year to solve the capital of hundreds of thousands of enterprises.
Let's look at the comparison of electric energy, electric energy is not different, because they are all through the same power equipment to operate the equipment, the power of the two is similar, the running time is the same, basically the energy consumption is about the same.
To sum up, for the closed cooling tower energy saving accounting can be strong to open the tower out, and, today are advocating energy conservation and environmental protection, this is the general trend, so the closed cooling tower is more and more favored by the majority of users.
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