deep well pump 110

When you hear “deep pump 110”, the first thing that comes to the mind of an inexperienced customer is probably something about a power of 110 kW or, perhaps, a diameter. In fact, in our practice, this figure most often indicatesnominal diameter of the pressure pipe in millimeters. But here’s the catch: this is not a rigid standard, but rather a designation established in catalogs. Many people mistakenly believe that all pumps labeled 110 are identical in characteristics and are suitable for the same conditions. It is at this stage that the main mistakes in selection begin.

From catalog to well: where the gap lies

Take, for example, our experience in production. At ?Zhejiang Yangzijiang Pumping Industry Co.,Ltd? The range of submersible pumps is extensive. And when a client asks for “pump 110”, the first clarification is for what environment? For clean water from an artesian well this is one type of design, for a well with a high sand content it is completely different, with reinforced impellers and protection. Constructiondeep well pumpfor water supply to a private home and for process water at a production site will be different, even if the diameter is the same.

There was a case, an application came for a standard 110 well pump for a country house. According to the well's passport, everything is clean. Installed, three weeks later there was a complaint about a drop in pressure. Dismantled. It turned out that there was a fine abrasive in the water, which the owner did not know about, and the standard impellers were worn out. I had to change it to a model with wear-resistant polymer composite wheels. Conclusion: a well passport is good, but water analysis before selection is sacred. Now we always say this.

Or another nuance - the material of the case. Stainless steel is a seemingly universal choice. But for some aggressive environments, even weakly concentrated ones, it may be more economically profitablesubmersible pumpwith a body made of special plastic. We have such solutions on our website yangtzeriverpump.ru in the plastic chemical pumps section, but not everyone thinks to look in this direction for well problems. But in vain.

Multi-stage: power reserve and its price

Often both single-stage andmultistage centrifugal pumps. The key parameter here is the required pressure. For deep wells, of course, a multi-stage design is indispensable. But there is a subtlety: each additional cascade means an increase in pressure, an increase in the length of the pump, and, of course, a price.

We somehow played it safe and supplied the client with a pump with a step reserve, designed for a depth of 150 meters, although the dynamic level was 90. The pump worked, but the client was unhappy with the overpayment. Fair. Now our approach is more rigorous: we more carefully consider the total losses, including horizontal sections and filters, and select the model so that the operating point is in the middle zone of the characteristic, and not at the minimum speed. This is also better for the resource of the unit.

Tests at our stands show this difference. If you run the same model 110, but with a different number of stages, the pressure curves diverge significantly. And you can see where the efficiency will be maximum. Without our own test circuit, which we have in our association of production and R&D, it is simply impossible to guess such subtleties; you have to rely on calculations that may not take into account real voltage fluctuations in the network, for example.

Self-priming and submersible: application limits

Sometimes there is confusion between deep-well and self-priming pumps. Request ?pump 110? may also come to pump out the well. Here it is important to clearly distinguish: if the water level can be lowered below the suction pipe, then sometimes it is more logical to consider a reliableself-priming pump, and not organize a submersible option with a rope and cable. But for a standard well, of course, only the submersible version.

Working with clients, we often see that their main fear is the complexity of installation and maintenance.deep well pump. And this is justified. Pulling out 30-40 meters of column from a narrow well is not a task for an amateur. Therefore, we always focus on the reliability of the cable, the quality of stainless steel cable hangers and, what is critical, on the correct piping on the surface - check valves, pressure gauges, frequency converters for a smooth start-up. A small thing like protection against “dry running?” can save an expensive unit.

One of the failures: somehow they installed a system without a frequency converter on a powerful pump 110. The starting current was huge, and at the old rural substation the circuit breakers constantly tripped. I had to supply and install the converter. Lesson: engineering calculation of the electrical network at the site is a mandatory item in the pre-sale inspection, even if no one orders it.

Bottom line: number 110 is the beginning of a dialogue, not an answer

So, back to the beginning. ?Deep pump 110? - this is not a specific product, but a whole class of equipment with a huge range of parameters. His choice is always a compromise between depth, flow rate, water quality, required pressure and budget.

Our task as a manufacturer uniting eight lines from development to service is not just to sell a unit with a suitable diameter, but to help select a technically and economically sound solution. Sometimes this will be a standard model from the catalog, sometimes it will be modified for specific conditions, and sometimes it will be advice to consider a different water supply scheme.

Therefore, the next time you are looking for a “pump 110”, prepare not only the parameters of the well, but also a clear technical request: for what, how much, what quality of water and with what differences in the network. Then the dialogue will be substantive, and the equipment will serve for years without surprises. Everything else is a matter of technology and our experience.