China Best Sales 2023 Hot Sale Variable Frequency Screw Air Compressor with ABB Converter air compressor repair near me

Product Description

Variable Speed Drive Rotary Screw Air Compressor Advantages

CHINAMFG VSD (Variable Speed Drive) rotary screw air compressors are suitable for customers who need different amount of air supply and extremely accurate pressure. It can facilitate customers to optimize production process and improve productivity.
 
The principle of VSD is to adjust the motor rotation speed automatically according to the actual air demand. The reduced system pressure decreases the total energy consumption of the whole system, which can reduce energy costs by 35% or more.
 
The VSD air compressor reduces the energy consumption through the following points:

1. Removing the low efficiency transformation process from the full loading to unloading
2. Avoiding the power during the unloading process
3. Keeping the pipeline pressure drop under 0.1bar
4. Reducing the average working pressure
5. Lowering the system pressure to reduce the system leakage
6. The soft starting method increases the current balance and avoids the current surge
7. A flexible choice from 4 to 13bar which reduces the power consumption most.

Technical Parameters Of Variable Speed Drive Screw Air Compressor

Model Maxinmum
working
pressure
Capacity(FAD) Installed
motor
power
Driving mode& Cooling method Dimensions
(mm)
Weight Noise level** Air outlet pipe diameter
50Hz 60Hz
bar(e) psig Min. Max. Min. Max. Min. Max. Min. Max. kw hp L W H kg dB(A)
m3/min cfm m3/min cfm
DVA-5 7.5 109 0.43 0.85 15 30 0.44 0.87 16 31 5.5 7.5 Belt Driven 900 660 960 200 62 G3/4″
8.5 123 0.41 0.85 14 29 0.42 0.84 15 30 5.5 7.5
DVA-7 7.5 109 0.52 1.04 18 37 0.51 1.02 19 36 7.5 10 900 660 960 220 62 G3/4″
8.5 123 0.49 0.98 17 34 0.5 1 18 35 7.5 10
10.5 152 0.45 0.89 16 32 0.45 0.89 16 32 7.5 10
13 189 0.36 0.72 13 25 0.37 0.74 13 26 7.5 10
DVA-11 7.5 109 0.88 1.76 32 62 0.88 1.76 31 62 11 15 900 660 960 280 62 G3/4″
8.5 123 0.87 1.73 31 61 0.85 1.7 30 60 11 15
10.5 152 0.69 1.37 24 48 0.68 1.37 24 48 11 15
13 189 0.56 1.12 20 40 0.56 1.12 20 40 11 15
DVA-15 7.5 109 1.27 2.53 45 89 1.21 2.43 43 86 15 20 Direct Driven
Air
Cooling
1330 840 1030 325 64 G1-1/4″
8.5 123 1.24 2.48 44 88 1.19 2.38 42 84 15 20
10.5 152 1.02 2.03 36 72 1.17 2.34 41 83 15 20
13 189 0.99 1.98 35 70 1.14 2.27 40 80 15 20
DVA-18 7.5 109 1.5 3 53 106 1.82 3.63 64 128 18.5 25 1330 840 1030 400 64 G1-1/4″
8.5 123 1.47 2.94 52 104 1.77 3.54 63 125 18.5 25
10.5 152 1.45 2.9 51 102 1019 2.37 42 84 18.5 25
13 189 1.01 2.02 36 71 1.17 2.34 41 83 18.5 25
DVA-22 7.5 109 1.85 3.7 65 131 1.85 3.7 65 131 22 30 1330 840 1030 440 66 G1-1/4″
8.5 123 1.81 3.61 64 127 1.81 3.61 64 128 22 30
10.5 152 1.77 3.54 62 125 1.76 3.52 62 124 22 30
13 189 1.45 2.9 51 102 1.19 2.38 42 84 22 30
DVA-30 7.5 109 2.62 5.24 93 185 2.21 4.41 78 156 30 40 1600 1000 1400 670 66 G11/2″
8.5 123 2.57 5.14 91 181 2.15 4.31 76 152 30 40
10.5 152 2.56 5.11 90 180 1.82 3.64 64 129 30 40
13 189 1.72 3.43 61 121 1.77 3.54 63 125 30 40
DVA-37 7.5 109 3.25 6.5 115 230 3.86 7.73 136 273 37 50 1600 1000 1400 710 66 G11/2″
8.5 123 3.24 6.47 114 228 3.81 7.63 135 269 37 50
10.5 152 3.16 6.32 112 223 3.2 6.39 113 226 37 50
13 189 2.55 5.1 90 180 3.14 6.28 111 222 37 50
DVA-45 7.5 109 3.83 7.65 135 270 3.94 7.88 139 278 45 60 1600 1000 1400 860 69 G11/2″
8.5 123 3.8 7.6 134 268 3.85 7.7 136 272 45 60
10.5 152 3.28 6.57 116 232 3.59 7.18 127 254 45 60
13 189 3.2 6.39 113 226 3.17 6.34 112 224 45 60
DVA-55 7.5 109 4.9 9.8 173 346 4.6 9.2 162 325 55 75 1800 1200 1400 1350 69 G2″
8.5 123 4.86 9.71 171 343 4.53 9.06 160 320 55 75
10.5 152 4.62 9.24 163 326 3.9 7.8 138 275 55 75
13 189 3.68 7.35 130 260 3.8 7.59 134 268 55 75
DVA-75 7.5 109 6.96 13.91 246 491 6.27 12.53 221 442 75 100 1800 1200 1400 1450 69 G2″
8.5 123 6.33 12.66 224 447 5.86 11.71 207 413 75 100
10.5 152 4.76 9.51 168 336 5.13 10.26 181 362 75 100
13 189 4.62 9.24 163 326 4.71 9.42 166 333 75 100
DVA-90 7.5 109 8.45 16.9 298 597 8.45 16.91 298 597 90 120 2450 1800 1700 2100 72 DN80
8.5 123 8.35 16.7 295 590 8.4 16.8 297 593 90 120
10.5 152 7.25 14.5 256 512 7.38 14.76 261 521 90 120
13 189 6.25 12.5 221 441 5.71 11.42 202 403 90 120
DVA-110 7.5 109 10.4 20.8 367 734 10.03 20.06 354 708 110 150 2450 1800 1700 2500 75 DN80
8.5 123 10 20 353 706 9.99 19.98 353 706 110 150
10.5 152 8.75 17.5 309 618 8.4 16.8 297 593 110 150
13 189 7.25 14.5 256 512 7.33 14.67 259 518 110 150
DVA-132 7.5 109 11.75 23.5 415 830 12.22 24.43 431 863 132 175 2450 1800 1700 2600 75 DN80
8.5 123 11.6 23.2 410 819 11.92 23.83 421 842 132 175
10.5 152 9.92 19.83 350 700 9.9 19.79 349 699 132 175
13 189 8.23 16.46 291 581 8.32 16.64 294 588 132 175
DVA-160 7.5 109 14 28 494 989 14 27.99 494 988 160 215 2650 1700 1760 3150 75 DN80
8.5 123 13.5 27 477 953 13.66 27.32 482 965 160 215
10.5 152 12 24 424 847 12.02 24.03 424 849 160 215
13 189 10 20 353 706 9.88 19.75 349 697 160 215
DVA-185(W) 7.5 109 15.1 30.2 533 1066 15.23 30.45 538 1075 185 250 Direct
Driven
Air
Cooling
W-Water
Cooling
2650 1700 1760 3550 75 DN80
8.5 123 15.07 30.14 532 1064 15.03 30.06 531 1061 185 250
10.5 152 13.12 26.24 463 927 13.77 27.54 486 972 185 250
13 189 11.54 23.08 407 815 11.88 23.75 419 839 185 250
DVA-200(W) 7.5 109 17.5 35 618 1236 15.52 31.03 548 1096 200 270 3000 1950 2050 4200 78 DN100
8.5 123 17 34 600 1201 15.17 30.35 536 1071 200 270
10.5 152 15 30 530 1059 14.85 29.69 524 1048 200 270
13 189 13 26 459 918 13.49 26.97 476 952 200 270
DVA-220(W) 7.5 109 18.25 36.5 644 1289 18.84 37.68 665 1331 220 300 3000 1950 2050 4300 78 DN100
8.5 123 18 36 636 1271 16.62 33.24 587 1174 220 300
10.5 152 15.82 31.63 558 1117 16.58 33.16 585 1171 220 300
13 189 14.28 28.55 504 1008 13.49 26.97 476 952 220 300
DVA-250(W) 7.5 109 22.65 45.3 800 1600 21.49 42.99 759 1518 250 350 3000 1950 2050 4400 78 DN100
8.5 123 21.5 43 759 1518 21.08 42.17 744 1489 250 350
10.5 152 18.5 37 653 1306 16.75 33.5 591 1183 250 350
13 189 16.25 32.5 574 1148 16.37 32.74 578 1156 250 350
DVA-280(W) 7.5 109 23.24 46.47 820 1641 23.58 47.16 833 1665 280 375 3700 2300 2450 4900 78 DN125
8.5 123 22.77 45.53 804 1608 22.82 45.64 806 1612 280 375
10.5 152 20.45 40.89 722 1444 20.54 41.03 724 1449 280 375
13 189 17.91 35.81 632 1264 18.38 36.75 649 1298 280 375
DVA-315(W) 7.5 109 26.52 53.03 936 1872 25.44 50.88 898 1797 315 425 3700 2300 2450 7000 80 DN125
8.5 123 26.25 52.5 927 1854 24.26 48.52 857 1713 315 425
10.5 152 23.35 46.69 824 1649 22.75 45.51 803 1607 315 425
13 189 21.41 42.82 756 1512 20.43 40.86 721 1443 315 425
DVA-355(W) 7.5 109 31.61 63.21 1116 2232 27.29 54.57 963 1927 355 475 3700 2300 2450 7500 80 DN125
8.5 123 30.9 61.8 1091 2182 26.78 53.55 945 1891 355 475
10.5 152 25.75 51.5 909 1818 23.56 47.12 832 1663 355 475
13 189 22.83 45.65 806 1612 21.82 43.64 770 1540 355 475
DVA-400(W) 7.5 109 34.39 68.78 1214 2429 35.39 70.77 1249 2499 400 550 3700 2300 2450 8800 80 DN125
8.5 123 33.48 66.95 1182 2364 35.51 69.01 1218 2437 400 550
10.5 152 26.25 52.5 927 1854 24.02 48.04 848 1696 400 550
13 189 23.27 46.54 822 1643 22.24 44.49 785 1571 400 550

*)FAD in accordance with ISO 1217 : 2009, Annex C: Absolute intake pressure 1 bar (a), cooling and air intake temperature 20 °C
**) Noise level as per ISO 2151 and the basic standard ISO 9614-2, operation at maximum operating pressure and maximum speed

DENAIR Factory:

ZheJiang Denair(group)CO,.Ltd. is a Sino-German joint venture enterprise group integrating R&D,manufacturing and marketing.The company brought in advanced compressor R&D and manufacturing and marketing.The company brought in advanced compressor R&D and manufacturing technology of Germany CHINAMFG Group to make product development and large-scale production,including piston air compressors,double screw air compressors,Portable Air compressor,High and Medium Pressure Air Compressors, oil free air compressor and compressed air treatment equipment.

DENAIR International Trading Team

We carefully selected for you the classic case

CHINAMFG 250hp Screw Air Compressor in Thailand

Project Name: Spraying and sandblasting in Chonburi, Thailand

Product Name: 185KW 250HP screw air compressor with air dryer, air receiver tank and air filters.

Model No. & Qty: DA-185 x 2.

Working Time: From September, 2016 till now.

Event: In September, 2015, DENAIR VIP customer in Thailand finished the installation of 2 units of 250hp screw air compressor in their factory. This is the second project supported by DENAIR for them since we supplied 4 units of diesel portable air compressor for them in the year of 2014. 

DENAIR Hannover Exhibitions

FAQ

Q1: Are you factory or trade company?  
A1: We are factory.

Q2: What the exactly address of your factory? 
A2: Our company is located in No. 6767, Tingfeng Rd. Xihu (West Lake) Dis.n District, ZheJiang  201502, China
And our factory is located in No. 366, YangzhuangBang Street, Pingxing Rd., Xindai Town,HangZhou, ZHangZhoug Province, China

Q3: Warranty terms of your machine? 
A3: Two years warranty for the machine and technical support according to your needs.

Q4: Will you provide some spare parts of the machines? 
A4: Yes, of course.

Q5: How long will you take to arrange production? 
A5: 380V 50HZ we can delivery the goods within 10 days. Other electricity or other color we will delivery within 22 days

Q6: Can you accept OEM orders? 
A6: Yes, with professional design team, OEM orders are highly welcome. /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Lubrication Style: Lubricated
Cooling System: Air Cooling/Water Cooling
Power Source: AC Power
Customization:
Available

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Payment Method:







 

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Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

What Safety Precautions Should Be Taken When Operating Screw Compressors?

When operating screw compressors, it is important to follow specific safety precautions to ensure the well-being of personnel and prevent potential accidents. Here’s a detailed explanation:

1. Familiarize Yourself with the Equipment:

  • Before operating a screw compressor, thoroughly read and understand the manufacturer’s instructions, safety guidelines, and operating procedures. Familiarize yourself with the specific features, controls, and safety devices of the compressor.

2. Wear Appropriate Personal Protective Equipment (PPE):

  • Wear the necessary PPE, such as safety glasses, hearing protection, gloves, and appropriate clothing, when operating the compressor. PPE helps protect against potential hazards, including flying debris, noise, and contact with hot or moving parts.

3. Ensure Proper Ventilation:

  • Operate the screw compressor in a well-ventilated area to prevent the buildup of potentially harmful gases or fumes. Ensure that the compressor’s intake and exhaust vents are not obstructed, allowing for adequate airflow.

4. Compressor Location:

  • Position the compressor on a stable and level surface to prevent tipping or instability during operation. Ensure that the compressor is located away from flammable materials, heat sources, or sources of ignition.

5. Electrical Safety:

  • Follow electrical safety guidelines and ensure that the compressor is properly grounded. Avoid using damaged or frayed electrical cords and ensure that the electrical connections are secure.

6. Lockout/Tagout Procedures:

  • Before performing any maintenance or repair tasks on the compressor, follow lockout/tagout procedures to isolate electrical power and prevent accidental startup. Lockout/tagout procedures help protect against unexpected energization of the compressor or its components.

7. Pressure Relief:

  • Before performing any maintenance tasks or opening the compressor, ensure that all pressure has been relieved from the system. Follow proper procedures for depressurizing the compressor and associated piping to avoid sudden releases of pressure.

8. Hot Surfaces:

  • Be cautious of hot surfaces, such as compressor casings, piping, or discharge components. Allow sufficient cooling time before touching or performing maintenance tasks on hot surfaces to avoid burns.

9. Maintenance and Inspection:

  • Adhere to the manufacturer’s recommended maintenance schedule and perform regular inspections of the compressor. Replace any worn or damaged components promptly to prevent potential hazards or malfunctions.

10. Emergency Procedures:

  • Be familiar with emergency procedures, including how to shut down the compressor in case of an emergency, how to respond to leaks or spills, and how to handle fire or electrical incidents. Have emergency contact information readily available.

11. Training and Qualified Personnel:

  • Ensure that operators and maintenance personnel are adequately trained in the safe operation and maintenance of screw compressors. Only allow qualified personnel to perform maintenance or repair tasks.

It is essential to consult the specific safety guidelines provided by the manufacturer of the screw compressor as they may include additional precautions or recommendations.

In summary, when operating screw compressors, it is important to familiarize yourself with the equipment, wear appropriate PPE, ensure proper ventilation, follow electrical safety measures, implement lockout/tagout procedures, be cautious of hot surfaces, perform regular maintenance and inspections, and be prepared with emergency procedures. By following these safety precautions, the risk of accidents or injuries can be minimized, ensuring a safe working environment when operating screw compressors.

air compressor

How Do Screw Compressors Contribute to Energy Savings?

Screw compressors offer several features and advantages that contribute to energy savings. Here’s a detailed explanation:

1. Efficient Compression Process:

Screw compressors are known for their efficiency in compressing air or gas. They use a unique rotary screw design, where two intermeshing screws rotate to compress the air. This design provides continuous and smooth compression, resulting in less energy loss compared to other compression technologies, such as reciprocating compressors. The efficient compression process of screw compressors helps reduce energy consumption.

2. Load and Unload Operation:

Screw compressors often incorporate load and unload operation, also known as capacity control. This feature allows the compressor to match its output to the actual demand for compressed air. During periods of lower demand, the compressor unloads by disengaging some of its capacity. This reduces power consumption since the compressor is not operating at full load continuously. By adjusting the compressor’s output to match the required air flow, load and unload operation helps save energy.

3. Variable Speed Drive (VSD) Technology:

Many screw compressors are equipped with Variable Speed Drive (VSD) technology. A VSD allows the compressor’s motor speed to be adjusted according to the demand for compressed air. By running the compressor at lower speeds during periods of lower demand, the energy consumption can be significantly reduced. The VSD technology enables precise control over the compressor’s output, resulting in energy savings and improved efficiency.

4. Air Leakage Reduction:

A common source of energy loss in compressed air systems is air leakage. Screw compressors are designed to minimize air leakage through improved sealing mechanisms and enhanced construction materials. By reducing air leakage, the compressor can operate more efficiently, as less energy is wasted in compressing air that escapes before reaching the intended point of use. Regular maintenance and monitoring practices help identify and address air leakage issues, further contributing to energy savings.

5. Integrated Energy Recovery:

In certain applications, screw compressors can be configured to recover and utilize the heat generated during the compression process. This recovered heat can be used for various purposes, such as space heating, preheating process air or water, or powering other thermal processes. By utilizing the recovered heat energy, screw compressors enhance overall energy efficiency and reduce the need for additional heating systems.

6. System Optimization and Controls:

Screw compressors often feature advanced control systems that optimize their operation for energy efficiency. These control systems monitor various parameters, such as system pressure, air demand, and temperature, and adjust the compressor’s operation accordingly. By continuously analyzing the system requirements and making intelligent adjustments, the control systems help minimize energy waste and maintain optimal performance.

7. Maintenance and Proper Operation:

Regular maintenance and proper operation of screw compressors are essential for maximizing energy savings. Routine maintenance activities, such as cleaning air filters, checking lubrication levels, and inspecting and repairing leaks, ensure the compressor operates at peak efficiency. Additionally, proper operation practices, such as avoiding excessive idling or overloading, contribute to energy savings and prolong the compressor’s lifespan.

In summary, screw compressors contribute to energy savings through their efficient compression process, load and unload operation, variable speed drive technology, air leakage reduction, integrated energy recovery, system optimization, and proper maintenance and operation. By utilizing these features and implementing energy-conscious practices, industries can significantly reduce energy consumption and lower operating costs in compressed air systems.

air compressor

What Are the Advantages of Using a Screw Compressor?

Using a screw compressor offers several advantages in various applications. Here’s a detailed explanation:

High Efficiency:

Screw compressors are known for their high efficiency in converting electrical power into compressed air or gas. The rotary positive displacement design of screw compressors allows them to deliver a large volume of compressed air or gas with minimal energy loss. This high efficiency results in cost savings and reduced energy consumption compared to other types of compressors.

Continuous Operation:

One of the key advantages of screw compressors is their ability to provide a continuous flow of compressed air or gas. The interlocking helical rotors ensure a smooth and continuous compression process without pulsations. This feature is particularly beneficial in applications that require a steady and reliable source of compressed air, such as in manufacturing plants and industrial processes.

Compact Design:

Screw compressors are known for their compact design, which allows for space-saving installation. They have a relatively small footprint compared to other types of compressors, making them suitable for applications where space is limited. The compact design also facilitates ease of installation and integration into existing systems.

Low Vibration and Noise Levels:

Screw compressors are designed to operate with low vibration levels, resulting in smooth and quiet operation. The interlocking rotors and balanced design help in minimizing vibrations, reducing the need for additional vibration isolation measures. The low noise levels make screw compressors suitable for applications where noise reduction is important, such as in office environments or noise-sensitive industrial settings.

Wide Range of Capacities:

Screw compressors are available in a wide range of capacities, allowing for flexibility in meeting different compressed air or gas requirements. Whether it’s a small-scale application or a large industrial process, there are screw compressors available to match the specific capacity needs. This versatility makes screw compressors suitable for a variety of industries and applications.

Oil-Injected and Oil-Free Options:

Screw compressors are offered in both oil-injected and oil-free variants, providing options to meet different application requirements. Oil-injected screw compressors use lubricating oil for cooling, sealing, and reducing friction between the rotors. They are commonly used in industrial applications where a small amount of oil in the compressed air is acceptable. Oil-free screw compressors, on the other hand, eliminate the need for oil and provide contaminant-free compressed air. They are preferred in industries such as food and beverage, pharmaceuticals, and electronics, where oil-free air is critical.

Overall, using a screw compressor offers advantages such as high efficiency, continuous operation, compact design, low vibration and noise levels, capacity flexibility, and options for oil-injected or oil-free operation. These benefits make screw compressors a popular choice in various industries for a wide range of applications.

China Best Sales 2023 Hot Sale Variable Frequency Screw Air Compressor with ABB Converter   air compressor repair near meChina Best Sales 2023 Hot Sale Variable Frequency Screw Air Compressor with ABB Converter   air compressor repair near me
editor by CX 2024-01-08

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