Methods to prevent transformer explosion

Methods to prevent transformer explosion

In the long-term use of a transformer is usually worried about a fault is the phenomenon of transformer explosion, the prevention of transformer explosion has become the top priority, in the realization of greater efficiency of the transformer at the same time, protection is not negligible, so what are the methods to prevent transformer explosion?

(1) the transformer cannot overload operation: if the transformer is overloaded for a long time, it will cause coil heating, gradually aging the insulation and causing short circuit;
(2) regular inspection of transformer insulation oil quality: transformer oil quality should be regularly tested, unqualified oil should be replaced in time, or take other measures;
(3) to prevent the aging damage of the insulation of the transformer core, and the insulation aging caused by the long-term heating of the core;
(4) to prevent the transformer from damaging the insulation due to careless maintenance. If the transformer is found to be damaged, it shall be dealt with in time;
(5) to ensure that the transformer leads are in good contact, resulting in local overheating due to bad contact;
(6) to prevent the transformer from lightning strike, the transformer will be destroyed due to breakdown of insulation;
(7) transformer short circuit protection: transformer coil or load short circuit, if the protection system failure or protection fixed value is too large, may burn the transformer. To this end, install reliable short circuit protection;
(8) protect the transformer from good grounding;
(9) transformer ventilation and cooling: if the transformer coil conductor is a class insulation, its insulation is mainly paper and cotton yarn. The insulation life will be reduced by about half when the temperature increases by 8℃. The transformer operates at a normal temperature below 90℃ and has a service life of about 20 years. If the temperature rises to 105 ° c, the life is 7 years. Transformer operation, to maintain good ventilation and cooling.

The above are the common steps and methods of transformer explosion prevention. According to the above expression standard, prevention can avoid the danger and loss caused by transformer explosion, ensure the effective operation of transformer, improve productivity and increase benefits for the company.

Related products:

Transformer Transformer Drying Process
Transformer Of Working Principle

Other related products:

Manual vacuum ball valve
Vacuum pump for PVC foam board

Model selection guide for modular machine tools

Model selection guide for modular machine tools

Deep hole drilling machines have a complete range of specifications. In order to facilitate the selection of your deep hole drilling machines, please select your requirements from the list, including:

(1) part type -- mold, drum, hollow shaft, ring mold, tube plate, roll.

(2) minimum aperture: 1mm, 2mm, 4mm, 18mm, 60mm

Maximum aperture; 5mm 10mm 20mm 30mm 60mm 90mm 120mm

(3) maximum drilling depth; 100mm 500mm 1000mm 1200mm 1500mm 2000mm 2500mm

3m 4m 5m 6m 7m 8m 9m 9m 10m 11m 12m 13m

(4) the maximum length, width and height (weight or diameter) of the workpiece;

(5) driving mode: semi-automatic (manual positioning + automatic cutting tool), numerical control (the drilling efficiency and quality of both are the same, numerical control is much more convenient).

Imported: FANUC mitsubishi Siemens others

(6) peak production (1 to 16 bits can be selected for simultaneous drilling).

(7) the machine tool should have a single coordinate (only the feed movement of the drill); Two coordinates (the bit's feed motion is Z axis and the workpiece can be moved in X direction). X stroke three coordinates (the bit's feed movement is the Z axis, X, Y direction of the moving positioning hole coordinates). X stroke Y stroke five coordinates (bit feed movement is Z axis, X, Y direction to move the positioning hole coordinates) (U axis to adjust the vertical Angle of the drilling hole, V axis to adjust the horizontal Angle of the drilling hole). X travel and Y travel

(8) straightness requirements: no more than 0.05mm/100mm (high precision) or no more than 0.1mm/100mm(low precision) the bit and the workpiece rotate at the same time. Under normal circumstances, 0.01--0.05mm/100mm

Related products:

Special purpose machine tools of characteristics
Nc special machine tool of working principle

Other related products:

Pneumatic ultra-high vacuum gate valve

Vacuum pump for oxygen generator

Forging equipment industry also needs innovation

Forging equipment industry also needs innovation

Does the machine tool industry need jobs' creative vision, too? Is this design concept needed in the machine tool industry?

The word "design", in the machine tool industry seems to be still very unpopular, is not a word that makes people sound excited. Due to the characteristics of the industry, machine tool products in the construction environment, the first emphasis is on safety and practical, it seems that there is no need to rack their brains to rely on bright appearance to impress customers; Machine tools are far from the general public and do not need to dazzle consumers with fancy models; At the same time, China's machine tool industry started late, and the current industry competition is still in the extensive stage for a variety of reasons, making the machine tool industry and even the heavy industry design culture is extremely lacking, and the highly sought after product designers in the industry are rare.

In the product innovation chain, r&d and design are driven by each other, both of which belong to "brain engineering". A high quality machine tool products, safety and utility is only the minimum conditions, machine tool design field is not limited to the simple model idea, but a product category, ergonomics, brand recognition and other systems of science. Like corporate culture, the design culture of machine tools also needs to be nurtured and nurtured slowly.

What role does the design of the machine tool play in the production process? Is the principle of "external function" still valid, or should the external design be the first and the function the second? To these questions, the industrial graduate designer and CEO of the German company replied, "I have never been a big fan of the idea of 'function of form,' because at the moment it's a cliche. For example, a wheel should of course be round, or it wouldn't roll. But that doesn't mean that a wheel in a particular position necessarily represents a sensitive solution."

Whether it is the imagination ahead of the imagination, or full of creative ideas, for the machine tool industry to bring a new air. We look forward to the emergence of many design masters like Steve jobs in the machine tool industry to enliven and energize the machine tool industry.

Related products:

What should be paid attention to when operating the forging equipment
What are the installation methods of forging and pressing equipment

Other related products:

Vacuum pump for cannery exhaust and seal
Vacuum pump for chocolate production

Advice on the use of oil-water separator equipment

Advice on the use of oil-water separator equipment

The kitchen oil and water separator should be located close to the sink or sink, not in the food area where sanitation is required. Kitchen drain end should set net frame type floor drain, prevent rat and block sundry. The secondary oil separator is generally located on the next floor or basement of the kitchen, and the horizontal interval between the feed pump room is more than 10m. The horizontal interval between the kitchen drain riser is generally not larger than 20-25m, and the short interval of the oil drain pipe is blocked.

When selecting the equipment room, waste oil and waste residue should be selected for easy transportation, close to the direction of stairs, cargo ladders, etc., and the dimension should consider the maintenance and protection space of the protection operation. Because of repeated oil cleaning operations, the surrounding ground should be polluted, so the outdoor oil trap should be located in the relative shade; Indoor grease trap equipment should be located in a separate equipment room, and equipped with water bucket, flushing taps and ventilation exhaust equipment, the number of air should not be less than 15 times/hour.

The equipment ventilation pipe shall be connected to the outdoor or to the building drainage ventilation system; The outdoor ventilation pipe should be high, that is, the top of the pipe should be more than 2 meters above the ground or located in the shaded area where no one is near. Indoor installation of ventilation pipe should be drawn out of the roof alone.

The inlet and outlet of the oil and water separator must be equipped with equipment gate valves at both ends, so as to facilitate the debugging and maintenance of the equipment. 7. Drainage ditches or puddles shall be provided around the equipment to facilitate repair of drainage and urgent drainage.

Related products:

What Should Be Considered When Choosing An Oil-Water Separator?
What Problems Should Be Paid Attention Installing Oil And Water Separator?

Other related products:

Vacuum pump of rubber factory
Vacuum pump for raw material industry

Chemical cleaning of heat exchangers

Chemical cleaning of heat exchangers

The chemical cleaning method of heat exchanger is based on the principle of dissolution reaction, through the chemical reaction between the cleaning solution and the sediment on the surface of the oil refining and chemical equipment, the sundries on the surface of the heat exchanger can be cleaned without dismantling the equipment. The whole cleaning process is simple and easy. However, if the cleaning solution is not selected scientifically when the chemical cleaning method is used to clean the refinery chemical equipment, the performance and quality of the heat exchanger will be damaged in the cleaning process, resulting in corrosion of the refinery chemical equipment.
Under normal circumstances, the cleaning solution used in the cleaning process of heat exchangers of oil refining and chemical equipment is a detergent. The heat exchangers of oil refining and chemical equipment are cleaned by virtue of the surface activity and purification chemical reaction of the cleaning solution. The cleaning methods of refinery chemical equipment mainly include circulation method, impregnation method and impact method. Among them, the circulation method is to recycle the cleaning liquid with the help of the pump; The macerating method is to fill the heat exchanger with the cleaning liquid, clean the heat exchanger with the cleaning liquid for a period of time, then discharge the cleaning liquid from the bottom of the heat exchanger, and transfer the cleaning liquid into the mixing equipment. When the operators clean the heat exchanger by dipping method, they should first know whether the refinery chemical equipment contains substances prone to chemical reactions, so as to prevent the heat exchanger from being damaged in the cleaning process.

Related products:

Heat exchanger explosion of cause
Heat exchanger parking for precautions

Other related products:

Single Phase Vacuum Pump
Oil-Free Scroll Vacuum Pumps