World Pump Industry Technology Development Status and General Trends
The technological development of pumps, like the development of other industries, is driven by market demand. Nowadays, history has entered the 21st century. Under the background of the huge demand for high-tech development in the fields of environmental protection and electronics, and the sustainable development of the world, many industries or fields including the pump industry Both have brought about rapid changes and developments in technology.
In recent years, the technical development trend of pumps mainly has the following points:
1. Product diversification
The vitality of a product lies in the needs of the market. Today's market demand is precisely the need to have their own characteristics, to make a difference; it is this, which has created a diversified trend of pump products. Its diversity is mainly reflected in the diversity of pump transport media, product structure differences and operational requirements.
From the perspective of the diversity of transport media, the earliest pumps are transported by a single water and other flowable liquids, gases or slurries. Now it is possible to transport solid-liquid mixtures, gas-liquid mixtures, solid-liquid mixtures, until they are transported. Objects such as potatoes, fish, etc. Different transport objects have different internal structural requirements for the pump.
In addition to the different requirements of the transport object on the structure of the pump, new requirements are imposed on the internal or external structure of the pump in terms of the installation form of the pump, the layout of the pipeline, maintenance and repair. At the same time, each manufacturer has added the concept of their own company in the design of the structure, which has further improved the diversification of the pump structure.
Based on the overall background of sustainable development and environmental protection, the pump operating environment has put forward many requirements for the design of the pump, such as leakage reduction, noise vibration reduction, reliability increase, life extension, etc., which have different design for the pump. Focus or several key points need to be considered in parallel, and it will inevitably form a diversified form of pump.
2. The combination of pump design level improvement and manufacturing technology optimization
Today, entering the information age, pump designers have already used computer technology to develop products and design (such as the use of CAD), greatly improving the speed of the design itself and shortening the cycle of product design. In the production-oriented manufacturing, the manufacturing technology represented by numerical control technology CAM has penetrated into the production of pumps. However, from the current domestic situation, CNC technology CAM is mainly used in the production of bulk products. For single or small batch production, CAM technology has not been widely implemented in the pump industry, and the production of single-piece small batches is still dominated by traditional production equipment.
Due to the market demand for the manufacturer's delivery time to be as short as possible, especially for the special product (products required by the user), the shortened delivery cycle, the pump manufacturers must accelerate the use of CAM technology, even the computer integrated manufacturing system (CIMS), Flexible manufacturing (FMC and FMS) handles the process from design to manufacturing of molds and parts processing to ensure that once the design is completed, the processing of product parts is also completed in the same period to ensure the shortened product production cycle.
At the same time, in addition to the use of computer graphics, the strength analysis, reliability estimation and three-dimensional design of the product will be realized on the carrier of the computer, and the process problems and local structural problems and assembly that were originally found and solved in the production will be realized. Sexual issues and other aspects mention pre-production prevention and shorten the trial period of products.
3. Product standardization and modularization
At the same time as the product is diversified, the pump as a general-purpose product, the total amount is still huge. In the market, in addition to technical competition, price competition of products, especially price competition of generalized products is an inevitable trend. In the trend of diversification of products, it is necessary to achieve the competitive advantage of product prices, improve the standardization of product parts, and realize the modularization of product parts. After the modularization of many components, the diversification of products can be achieved by combining different modules or changing the characteristics of individual parts. At the same time, only when the standardization of parts is improved, it is possible to produce large-scale parts based on the diversification of products, to reduce the production cost of products and to form a price competitive advantage of products, and also to diversify products. On the basis of further shortening the delivery cycle of the product.
4. Improvement of pump internal characteristics and pursuit of external characteristics
The intrinsic characteristics of the pump refer to the inherent characteristics of the product, including product performance, component quality, assembly quality, appearance quality, etc., or simply referred to as quality. At this point, many pump manufacturers are currently paying attention to efforts to improve and improve. In fact, we can find that there are many products that fail to meet the factory inspection results after the factory inspections are consistent with the operation of the unit. Such as overload, noise increase, use failure, or reduced life. The problem of the other aspects; the operating point or operating characteristics of the pump in practice, we call the pump's extrinsic or system characteristics.
When technicians design products, it often takes a lot of thought to improve the efficiency of one percent of a product. If the pump operation deviates from the high efficiency of the design, the actual operation efficiency is far more than one percent lower. Now, the pump manufacturer also supports the control equipment and complete sets of equipment including frequency conversion, and has actually been involved in the pursuit of the external characteristics of the pump. On this basis, paying attention to the centralized control system of the pump and improving the operating efficiency of the entire pump and pumping station is a step up in the pursuit of the characteristics of the pump.
From a sales point of view, the promotion of the product is to promote the intrinsic characteristics of the pump; while the focus on the external characteristics of the pump is that the manufacturer is not only selling products, but marketing the pump station (set of projects).
From the point of view of use, a good product must be a product suitable for the operating environment rather than a factory-detected product.
5. Further development of mechatronics
Just like the development of science and technology, interdisciplinary and marginal disciplines in the field of science and technology are becoming more and more abundant at present, and interdisciplinary joint research is a very common thing, as is the technological development of pump products. Taking the shielded pump as an example, the problem of canceling the shaft seal of the pump must be started from the motor structure, and it is not limited to the pump itself. To solve the noise problem of the pump, in addition to solving the flow and vibration of the pump, it needs to be solved at the same time. The noise of the motor blades and the noise of the electromagnetic field; to improve the reliability of the submersible pump, measures such as leakage protection and overload protection must be added to the submersible motor; the efficiency of the pump must be improved by the use of control technology. All of these indicate that to develop the pump technology level, we must start from the supporting motor and control technology, and comprehensively consider to maximize the comprehensive level of mechatronics.
6. Accelerated utilization of new materials and new processes
The use of new materials and processes has been a major factor driving the development of pump technology for more than a decade. Pump materials from cast iron to special metal alloys, from rubber products, ceramics and other non-metallic materials to engineering plastics, have played a prominent role in solving the pump's corrosion resistance, wear resistance, high temperature and other environments. At the same time, the use of new processes, and better use of new materials to the pump components still throughout the pump. For example, some foreign manufacturers have designed and introduced pumps made entirely of engineering plastics. Compared with pumps made of general metal materials, the pump is not inferior in strength and superior in corrosion resistance and wear resistance. Another example is the use of new surface coating techniques and surface treatment techniques to solve the problem of corrosion and wear of the pump. The further development of new materials and the application of new processes will be more widely used in the pump field.