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Zhejiang Shenli Explosion-proof Electromechanical: Burning New Hope, Shines the Future

Recently, Zhejiang Shenli explosion-proof mechanical and electrical released new research and development results, the news industry attention. It is reported that the company has achieved a series of breakthroughs in the field of explosion-proof electromechanical, providing users with more safe and reliable products. These research and development results not only reflect Zhejiang Shenli Explosion-proof Electromechanical's unremitting pursuit of technological innovation, but also show that it attaches great importance to user safety.

11-28

2023

Zhejiang Shenli: Create a new chapter of traditional energy

Zhejiang Shenli recently announced that it will take explosion-proof electromechanical as the starting point to help the traditional energy industry move towards a new chapter in development. As a professional manufacturer of mechanical and electrical equipment, the company will provide a series of high-quality explosion-proof mechanical and electrical products for the traditional energy industry to meet the safety needs of the industry and promote the upgrading of the energy industry.

11-28

2023

Energy Agency sets out to curb disorderly competition in wind power industry

Recently, the National Energy Administration issued the "Notice on Relevant Requirements for Regulating the Market Order of Wind Power Equipment" (hereinafter referred to as the "Notice"), proposing the establishment of a wind power equipment type certification system, standardizing quality acceptance behavior, and prohibiting local protectionism. Experts believe that the promulgation of the "Notice" will help solve the problem of unclear disputes between wind power manufacturers and developers on quality assurance issues, and it is also expected to eliminate the problem of local protectionism in the bidding and procurement process of wind turbines. In recent years, China's wind power industry has recovered and re-entered the rapid development channel. At the same time, the wind power equipment manufacturing industry has also seen disorderly competition, low technical level and quality of some equipment, serious local protection attention, and weak market supervision.

09-25

2020

Wind Power Policy Brewing to Enterprise Dispute Adjustment Timing

The National Development and Reform Commission recently issued a draft to adjust the price of wind power and did not receive widespread support. Opponents believe that policy instability may lead to risks. At the annual Beijing International Wind Energy Conference, the news that the NDRC is planning to adjust the price of wind power has become a topic of discussion with a large number of participants. Proponents believe that lowering the price of wind power to make it compete with traditional energy at the same price is an inevitable trend. Opponents believe that the price adjustment may be a bigger blow to the currently sluggish industry. The implication is that with the current industry situation, there is no ability to digest the reduced electricity price. At present, the proportion of wind power to the total electricity is low, and the loss of enterprises is large. The phenomenon of wind abandonment and power restriction has not been fundamentally solved.

09-25

2020

Fan Bearing Overheat, Damage and Treatment Measures

Fan Bearing Overheat, Damage and Treatment Measures Usually the fan bearing temperature should not exceed 70 ℃, but in fact there are overheating conditions above this temperature. In order to solve this kind of problem, the following is to explain the different causes of overheating: Usually the fan bearing temperature should not exceed 70 ℃, but in fact there are overheating conditions above this temperature. In order to solve this kind of problem, the following is to explain the different causes of overheating: 1. Insufficient oil quantity, for which the following measures can be taken 1) When there are uneven levels in the oil pipeline, air should be fully extracted. 2) After the oil cooler is dirty, the cooling effect will be reduced, resulting in insufficient cooling oil. The cooler should be cleaned in time. 3) When the filter element is dirty, the element should be replaced. 4) When using oil ring bearings, use an oil level gauge to detect the oil level and observe whether the oil ring is running normally from the observation window. 5) In rolling bearings, overheating occurs due to insufficient grease or excessive filling. When adding grease, it is better to wipe off the original grease and replace it with a new one. Its dosage is suitable for nearly 2/3 of the space of the fan bearing box. 2. Poor oil quality selection When the oil quality does not meet the requirements or the quality is changed, it is also one of the reasons for overheating. The oil quality recommended by the fan manufacturer should be used. When changing the oil quality, it needs to be carefully studied before it can be used. In addition, the replacement standard of oil should be based on the degree of oxidation, viscosity, viscosity index, dirt degree, etc., and it is appropriate to formulate a rough standard.

09-25

2020

Precautions for the use of industrial fans

There are many types of industrial fans, generally centrifugal, axial flow, and Roots blower. Today Xiaobian and everyone analysis of industrial fan equipment daily maintenance knowledge: 1, industrial fan in the use of the process should try to adhere to its surface cleaning, air inlet, outlet can not have debris. Industrial fan production workshop In addition, it is necessary to regularly clean up the dust and other debris in the blower and tube. 2, to make up for the industrial fan bearing or replace the lubricating oil regularly, in order to ensure that the industrial fan has a good working condition, the number of refueling is not less than 1000 hours/time, to stop the lack of oil work. 3, industrial fan power supply lines must be dedicated lines, can not be long-term use of temporary lines for power supply work. At the same time, it is necessary to insist that the power supply equipment has sufficient capacity and stable voltage, and cannot work under the condition of lack of phase.

09-25

2020

What are the classification of centrifugal fans

Centrifugal fans are widely used as the transmission power of air. What are the classifications of centrifugal fans? Centrifugal fans can be divided into four categories according to the nature of the conveying medium: ordinary fans, dust fans, corrosion-resistant fans, and explosion-proof fans. The ordinary fan is used to transport relatively clean, the temperature is not more than 80 ℃, the dust concentration is not more than 150 mg per cubic meter, and the air transported is not corrosive to the equipment. The dust exhaust fan is used to transport air with a dust concentration of more than 150 mg per cubic meter, and the dust exhaust fan can also be used as a pneumatic conveying machine. The dust exhaust fan is specially treated and is not easily blocked by dust, and the shell is relatively wear-resistant. Corrosion-resistant fans are used to convey corrosive gases to metal materials. Corrosion-resistant fans are usually made of corrosion-resistant materials such as stainless steel, plastic or ceramic, or coated with corrosion-resistant coatings on metal materials. Explosion-proof fans are used to transport gases that are prone to explosion and combustion, or air that contains some industrial dust that may cause an explosion, or for flammable and explosive environments. Its shell and impeller are made of soft metal, and the power source of explosion-proof fan is equipped with explosion-proof motor.

09-25

2020

Anti-surge Measures of Centrifugal Fan

Centrifugal fan anti-surge measures: 1) The selection of centrifugal fan should be in the effective area. Do not artificially arbitrarily increase the selection coefficient, so that the fan in operation, the actual fan flow is much higher than the design fan flow. When using a large number of throttling, it is easy to adjust the fan to work in the surge area. Therefore, in the design and selection of the fan, it is necessary to avoid the working condition range approaching the surge zone. If the box-type fan surges, check whether the air duct interface is deformed. 2) Once the centrifugal fan surges during system operation, the operating range of the working condition can be adjusted by changing the rotating speed of the fan, and the installation angle of the moving blade can also be changed. These methods can move the performance curve of the fan to the small flow area, and then the surge critical line also moves to the small flow area accordingly, thus expanding the stable operating range of the fan. 3) Because some workplaces do not have the above adjustment conditions, can not stop the production, but there is a simple and quick adjustment method can eliminate the surge, is to add a bleed valve. Make qv = qv and put qv surge> qvmin, and the surge can be eliminated immediately. It is pointed out that the gas put into the atmosphere should be harmless, and if it is harmful, it should be introduced into the inlet pipe of the ventilator by a small pipe.

09-25

2020

Policy Interpretation of Fresh Air System Industry in Various Countries

UK: Fresh Air System Policies and Regulations Clean Air Act In 1956, the British government promulgated the "Clean Air Act", the 1974 "Air Pollution Control Act", and the London City issued the "Draft Air Quality Strategy" in 2001. From 1977 to 1999, the sales volume of fresh air systems in the UK was 75 million, and fresh air systems have been installed in 97.81 indoor environments. Whether it is an office, a school, or a bar, installing a fresh air system with air replacement function has become a norm. Now in London, you will find that every family will install 1 to 2 fresh air systems. Japan: Fresh Air System Policies and Regulations "Air Pollution Prevention and Control Law" The "Air Pollution Prevention and Control Law" was enacted in 1968. The law was revised on a large scale in 1970, and then revised many times. The amendments made in 1990 expanded the content of environmental impact assessment and total air pollutant emission control. In 2008, the sales volume of fresh air system in Japan was 15 million units. According to the survey of relevant Japanese associations, the annual growth rate of fresh air system market was 23.51. Japanese administrative agencies at all levels, companies and families have installed fresh air systems, which have become a standard for housing and a standard for measuring housing qualifications. USA: Fresh Air System Policies and Regulations Clean Air Act The United States promulgated the Clean Air Act in 1970, which set high statutory limits for each air pollutant. 1977, the law was revised again to delimit air quality control areas, formulate environmental quality standards, and require states to formulate implementation plans! In 1975, the annual sales volume of fresh air system in the United States was 500000 units, reaching 8 million units in 1994 and exceeding 21 million units in 2005. In today's United States, the indoor installation of fresh air systems, like the purchase of televisions and refrigerators, has become a demand for home appliances. Even if the windows are not opened, the indoor air is always fresh! China: Fresh Air System Policies and Regulations Indoor Air Quality Standards The Indoor Air Quality Standard is formulated by the State Administration of Quality Supervision, Inspection and Quarantine, the State Environmental Protection Administration and the Ministry of Health. It was formally implemented on March 1, 2003, stipulating a fresh air volume of 30 cubic meters per hour. Since 2003, various products to improve indoor air pollution have gradually appeared in China. The arrival of fresh air system has fundamentally improved the indoor air quality.

09-25

2020

How to protect the lubrication system of centrifugal fan

How to protect the lubrication system of centrifugal fan The lubrication system is an important part of the centrifugal fan, which helps to protect the normal operation of the centrifugal fan under normal conditions. Lubrication system but a problem, the operation capacity of the centrifugal fan will be greatly reduced, and even affect the normal operation of the whole production equipment. Therefore, the lubrication system of the centrifugal fan needs strict protection to ensure that the normal operation of the centrifugal fan and the production equipment are not affected. Special attention should be paid to the quality of lubricating oil. It is an important guarantee for the operation of centrifugal fan lubrication system. Cheap and water-mixed lubricating oil cannot be used. Centrifugal fans are equipped with different filters. Their function is mainly to filter out the debris that enters a part of the external environment of the centrifugal fan lubrication system and some impurities that occur during the operation of the centrifugal fan to prevent them from entering the fuel tank. After the impact on the centrifugal fan causes equipment wear.

09-25

2020

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