The energy consumption of the compressed air system is directly proportional to the supply pressure of the system. The higher the system supply pressure, the greater the energy consumption of the air compressor, the increase of the compressed air supply pressure by 01 MPa, and the air compressor energy consumption by about 7%. 10% 4. The minimum pressure fluctuation of the compressed air system must meet the most demanding pressure demand of the system, that is, Pmn is higher than the maximum pressure of the process demand, and the pressure fluctuation of the air compressor unit is higher than Pmn. The power is a great waste. According to the operating characteristics of the compressor bed and the hydraulic machine, the “gas production-energy consumption†model of the compressor unit is established. The actual input power of the air compression system is measured between W~, where is the power of the supply pressure, that is, the ideal power consumption. the amount. The system energy saving is to make the energy consumption infinitely close to the ideal value. The energy saving potential U can be expressed as some waste cannot be avoided in the actual project, so the actual energy saving U' is that the proportional coefficient e is affected by the compressor performance and the overall operation of the system. The influence of other factors depends on the compressor control method. On the basis of the above, by collecting data, establishing mathematical models, and compiling corresponding calculation programs, the energy saving potential and the actual energy saved can be calculated. 2 system design The energy analyzer is built by virtual instrument technology, and the virtual instrument is a computer-based test instrument. Its hardware consists of two parts: instrument hardware and computer hardware. The software consists of instrument driver and function program. The function program of the system is an executable file including a plurality of subroutine modules, which calls the instrument driver to control the instrument and coordinate the work between the instruments to realize data acquisition, data processing and data display. . 2.1 Instrument hardware The hardware platform of the virtual instrument is mainly to solve the signal input and output, and is composed of computer and I/O interface equipment. The computer is the core of the hardware platform, generally a workstation, an industrial computer, or an ordinary personal computer with a bus slot. The I/O interface device is responsible for the acquisition, adjustment, amplification, and A/D conversion of the signal under test. The hardware structure of the energy analyzer is as shown in Fig. 2. The hardware of the instrument is composed of an embedded industrial computer, which is mainly used for system monitoring, data storage, data processing and data management. Data is collected by pressure transmitter, flow meter and temperature transmitter, and the operation status of the compressor unit is monitored in real time. At the same time, the accurate air consumption and pressure fluctuation curve can be measured. The gas supply pressure fluctuation curve will be used as the gas production. One of the basis of the - energy consumption model. The electric acquisition module adopts a cost-effective intelligent electric parameter transmitter to replace a series of transmitters such as current, voltage, power, power factor and power, and input modules for measuring the standard output signals of these transmitters. The I/O interface is integrated to greatly reduce system cost, facilitate on-site wiring, and improve system reliability. The communication interface uses the RS485 bus, and then the above instrumentation is hung on it to form a multi-point differential measurement and control system. 2.2 System software structure development, its advantages are integrated programming and text language programming in one, friendly interface, easy to operate, greatly shortening the system development cycle, the main interface of software operation is shown in Figure 3. Software operation main interface Zeng Jing, etc.: Research and implementation of an air compressor unit energy analyzer The system software adopts modular structure design, as shown in 圄4, from the functional aspects can be divided into: (1) user management subsystem . Used for user login, password management, etc. Design multi-level security controls and access rights, operators must log in to their own identity in order to obtain certain operational rights. When the operator's authority is less than the access permission of the software, the system software cannot be started. (2) Data processing subsystem. The bottom layer is the on-site smart meter, which is connected to the data processing unit via RS485 bus to form a data acquisition system. The data acquisition system communicates with each instrument every 2s. The unit is the core component of the analyzer, which is used for data exchange and data processing of the system. The data processing unit saves the results of the analysis in a database, and the manager can view the analysis results through the analyzer software. (3) Data management subsystem. Used for recording, querying, managing, and printing data report of test result data. System Software Structure 3 Conclusions and Prospects Starting from the “gas production-energy consumption†model of the compressor unit, modern computer-aided processing technology is used to obtain important and tidy information, and the compressed air is realized without hindering the operation of the air line. The system performs real-time monitoring; then the data is transmitted to the controller for the overall analysis of the system gas fluctuations, and the air compressor unit is in the gas supply (continued on page 35). The application code of the CNC system processing code is very extensive, and the power consumption under the state can be accurately displayed. Combined with the calculation of the distribution period, it can be easily analyzed into various modification schemes, such as a new equipment scheme. Replace all or part of the air compressor, replace the compressed air treatment equipment, and so on. The analyzer is low in cost and reliable in results. It provides a predictive, analytical and testing tool for the feasibility and economy of the air compressor unit's energy-saving retrofit. It is also easy to modify and upgrade, and will play a role in the future energy-saving renovation process. Great role.
Description
Spin flash dryers are designed for drying
high moisture content pasty materials in the pigments, dyes, fine chemical, pesticide,
fertilizer, feed, food, medical, electronic and other light industries. Flash
drying refers to the drying of particles which are suspended and conveyed in a
hot air stream.
Our SXG rotary flash drying machine is equipped with particular magnetic sealing device, meeting the GMP standards.
The performance of this Spin Flash Dryer reaches international advanced level,
and we have successfully used this machine for pharmaceutical industry.
Features
1. The materials are micronized
into high disperse state due to centrifugation, shear, crash and friction, and
the relative speed between the gas and solid is large, which enhances the heat
and mass transfer, thereby improving the production intensity of this flash
drying machine.
2. The dry gas enters into the
bottom of the spin Flash Dryer, and produces strong rotary air flow, which will
generate strong washing effect on the materials in order to eliminate sticking
phenomenon.
3. In high temperature area at the
bottom of the flash drying machine, the heat sensitive materials will not
contact with the heat surface directly, thus solving coking and discoloring
problems of the materials.
4. Because of high circumferential
gas speed in the drying chamber and short staying time of the materials, this
spin flash dryer achieves high efficiency, fast speed and mass production.
5. A spinning disk is built in the
drying room in order to control the material moisture at extremely low level.
6. The disperser can control the
particle size and humidity of the materials.
7. Our flash drying machines are
very flexible and cost efficient solutions with regards to both investment and
operation.
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