Chen Yuanlin's power consumption accounts for more than 8% of our company's energy consumption. The compressed air system is used for the terminal's air pressure energy, which accounts for only 10% and 30% of the input power, which greatly increases the cost of using compressed air. At present, the company in the energy-saving management of the compressed air system for the various compressed air use conditions such as the actual pipe network gas volume / pressure, field flow / pressure, turn 1 week, etc., lack of effective means to fully 膣 and 膣. In this paper, the discussion on the anti-control energy-saving technology of brewing gas is the corresponding improvement plan to reduce the operating cost of the gas pressure, which is beneficial to the improvement of the management level of the cell R managed by the company.
The eulogy air system is an open system composed of technology and gas. The pressure is 0.3MPa~0.7MPa. The number of air compressors is determined according to the compressed air consumption.
1.2 The current status of the company's compressed air use (1) The working pressure (P) of the air points used in each of the secondary units is different as shown in Table 1.
1 Compressed air system status 1.1 Compressed air system Compressed air is an indispensable kinetic energy for ZDlk's ikr universal application of driving power, auxiliary energy crystal pneumatic machinery, pneumatic components, partial furnaces, and mechanical cleaning tools. In general, the compressed air system is set by the motor, air compressor, and pipe gambling. Table 1 Working pressure of different uses of compressed air No. Usage Main use unit No. Use Main use unit Commonly used mouthpieces çž’ Equipment / mouthpieces Factory A / equipment moisture plant and other manual spray (paint) gun finished product factory blasting (pill) welding plant and other pneumatic fixture coil factory spot welding machine and other equipment plus equipment control heavy metal generators and other stamping equipment punching and cutting points The three-coordinate measuring machine quality inspection department (2) The compressed air used by each second-level unit is supplied by the technical pipe network. The compressed air pressure in the air compressor station area is higher (the pipe pressure loss is small), otherwise it is lower. When the gas peak (SH2S7 air compressor is fully open), the inlet pressure of the pipe network is too high (72MPaULt), and the inlet rib of the tail end is insufficient (below 055MPa).
(3) The inlet pipes of each factory are equipped with manual valves (normally open) and on-site operation.
a. The company's existing air compressor station summary table 1 set of two Peng position meter 34 sets / only (type with orifice flowmeter, screwing flow flow meter, gas waist gauge) person xse% b part of the meter S instrument Outdated products need to be updated, such as gas turbine flowmeters used in general workshops, transportation maintenance workshops, etc.
(5) When the compressed air system is in operation, the amount of gas used for production is about 70% of the gas production, and the rest is leakage. Such as the two-shift state of the state guide.
2 Compressed air system feedback control principle 2.1 Feedback principle When the compressed air flowing along the axial direction enters the intelligent screw-in vortex flowmeter (LUXZ-16), its flow totalizer will ID brother (instant flow in its range) , the amount of load, help, è… ), instrument parameters, fault code, operating status, etc. are converted into transmittable data, and the data is transmitted remotely to the SI control device through its configured RS485 communication interface and its feeder, and in the computer interface (person The corresponding visual reading content is displayed on the mw surface to realize the letter between the industrial control device/calculation station (the user traffic to the IDS device/computer).
2.2 Control principle The operator clicks the computer/1 control device to command the button according to the user's spray capacity. (If the switch is issued, the controller outputs the corresponding standard signal and transmits the corresponding standard signal to the electric ball valve through the control line. When the built-in module of the electric ball valve (using advanced computer single-chip and intelligent control software) cavity I control command', its electric actuator (built-in servo system) can control the motor operation to realize the control of valve opening, closing and opening.
2.3 industrial equipment / computer (industrial control room) industrial equipment / computer in addition to meet the requirements of this anti-German control function, the prison reserves the input and output interface, so that this is acceptable and the number of letters and Pan air compressor unit ES control The system is designed to facilitate the integration of the air system.
2.4 Line, control line, control line matching, selection and whether intermediate equipment is required should be considered by relevant personnel.
3Compressed air system feedback control scheme and energy-saving analysis In this scheme, each of the anti-turning power supply, the shed, the adjustment, the maintenance and maintenance of the site Lin, the control cloth rafting room: gambling / counting several network management Department station.
Entrance assistance, brothers and sisters in the rear area of ​​the factory (~0.72MPa, air pressure station exit pressure according to O.TMPa ~0.7MPa two regions 2011 company air compressor station gas production capacity (for 46020992m3 (power consumption 5369882 kWh, single The consumption is 0.12kWh/m3, the electricity price is 0.9 yuan/kWh, and the power consumption cost is 0.11 yuan/m3). The gas consumption per unit g (including loss) and your % are shown in Table 2.
In Table 2, P is the inlet of each factory, i air pressure 'i', the rear area of ​​the remuneration plant, the Ministry of Technology Teng Center and Table 2, 2011, the company's compressed air injection status list, unit name, serial number, unit name, turbine branch, heavy metal work branch Welding Branch Generator Branch Punching and Shearing Branch Coil Branch Factory Casting and Forging Branch Equipment Center Power Station Auxiliary Equipment Division Tool and Die Company Finished Product Branch Factory Back District Light Metalworking Branch (MPa) Factory Front Motor Division Research Center The special parts of the special parts of the special-purpose motor branch of the special inspection center of the blanking quality inspection center, the front part of the factory includes the tooling center of the technology department, the welding branch and some parts of the turbine branch. The gas consumption is relatively small or by the self-prepared air. The press is supplied with gas and the calculations in the table are ignored.
31 feedback control device selection Each secondary unit feedback control device is selected according to the technical parameters of the intelligent spiral vortex flowmeter. See Table 3. 32 new scheme implementation effect table 3 intelligent spiral vortex flowmeter technical parameter caliber (mm) flow range (m3/h) Working Pressure Accuracy Grade Repeatability Accuracy Level 1/3 After the implementation of the new scheme, the compressed air inlet conditions (instantaneous flow, cumulative flow, pressure, temperature) of the plant (area) can be realized in the industrial control room. Remote monitoring, data collection and storage provide accurate basic data for the company's energy consumption quantitative assessment, dispatch management and control, engineering calculations.
By remotely controlling the opening, closing and opening of the electric ball valve, the control of the stop and air supply of each plant (area) and the adjustment of the pipe network load can be completed in a timely and convenient manner according to the production dispatching order, effectively reducing the false demand and leakage loss and increasing the compression. The utilization rate of air can make the air compressor unit of the company's air compressor station more economical and reasonable to open, stop and load and unload, and create a reliable auxiliary platform for its energy-saving operation.
By monitoring the maximum working pressure at the entrance of each plant in the back area of ​​the plant, the decompression supply can be implemented by adjusting the valve opening to reduce the leakage in the back area of ​​the plant (the higher the pressure, the corresponding increase in leakage).
The premise of the preparation of this plan is based on the fact that the company's compressed air pipe network is not subject to large-scale renovation. Therefore, there are still a few adjacent secondary units in the plan for common meter measurement, such as tooling plant and process department tool center, equipment center plant, and transportation department maintenance. After the plant, the three parties need to install the sub-table to read and collect the monthly cumulative flow.
The compressed air is about 13806m3, saving about 165.67 million kWh. 4 Conclusion Through the remote air monitoring and control of the compressed air working conditions used by the company's factories (areas), this solution can reduce the leakage of compressed air and improve the compressed air. Utilization and system operation energy efficiency provide an alternative solution for efficient, energy-efficient operation of the company's compressed air systems. The implementation of this scheme can provide a reliable basic data platform for the further promotion of related energy-saving technologies in compressed air systems.
Nanpi Jiantong Hardware Manufacturing Co.,Ltd has a full service of metal fabrications with over 96,000 square meters. We have in-house capabilities to produce high quality components from stainless, carbon steel and aluminum sheets and plates. We can also fabricate items from some hot rolled steel items.
Our laser cutting and punching capabilities makes it possible to mass produce parts or architectural pieces with relative ease. Our in-house CAD design process supports our CNC equipment to provide exceptional control in meeting design requirements and tolerances.
Our equipment lineup includes:
- CAD Design for high tolerance CNC production.
- Press Brakes 220 ton capability to 14' lengths.
- Roll Former for up to 48" wide coil stock.
- Shears for 24 GA or .032 up to 1/4" HR Plate.
- Punch Press for holes, slots, nibbling.
- Welding (Steel, Stainless or Aluminum) Mig FCAW / TIG.
Metal Box
Box Metal,Metal Storage Box,Large Metal Box,Square Metal Box
Nanpi Jian Tong Hardware Manufacturing Co., Ltd. , https://www.sheetmetals.nl