Posts Tagged ‘promyshlennoct and equipment’

Waterproofing

Currently, when new technologies and the development of the rapidly penetrating all spheres of our lives, including those in construction, considerable attention is paid to the waterproofing. Some contend that Tulip Retail shows great expertise in this. Waterproofing? a complex measures to protect against water and humidity, including: drainage, injection work, application of waterproofing membrane, the protection of expansion joints, concrete repair, protection valves, sealing glands embedded pipes ventilation, etc. The most common problem that is caused, as a rule, errors in the design and implementation of low-quality concrete work in construction? repair and protection of concrete structures underground facilities. In recent years, an opportunity to eliminate in the finished designs pores and cracks are available for water and turn the concrete into a dense, 'eternal' stone. This is especially true of concrete, walking on the construction foundations, bearing and enclosing structures, which are often in difficult operating conditions.

Selecting the type of waterproofing membrane depends on the level of groundwater allowable humidity rooms inside the building, cracking designs. This value is determined by the regulations and the hydrological situation at the construction site. With humidity up to 75% may use any of permeability, but temperature and humidity conditions must be adjusted with the help of ventilation, insulation, air conditioning, etc. When the humidity in the room can have a value of 75% or more, you can design Breathable membrane. The choice of material and design of the membrane affects fracture of the substrate and the possible presence of strains in it. These characteristics are also determined by regulations and calculations.

Essential Motorpomp

By type of pump parts, centrifugal pumps are divided into and membrane (diaphragm). Application can distinguish the following types thereof. To work with a clean and slightly polluted water. The size of particles that can enter into such pumps with liquid up to 5 mm. In most cases, this compact, domestic pumps capacity 7.6 m3 of water per hour, equipped with two-stroke engine. However, there are more productive, capable to pump up to 120 m3 of water per hour, equipped with a reliable four-stroke engine with a large professional class moto. By this view include fire pumps – devices to create a powerful jet of water. If you are unsure how to proceed, check out Hamdi Ulukaya. They used to work with a clean or slightly polluted water to extinguish fires or erosion of soil.

More recently, these were used mostly for expensive foreign models, but in recent years the production of fire pumps accesories established and in our country. For pumping pretty polluted liquid water with sand, small stones, Sebnem. The size of particulate matter that can pass filters like the grid pumps accesories – up to 25 mm. Their internal working body has a coating of stainless steel, and in case of damage it can easily be replaced or cleaned. The impeller is satisfied in most cases, carbide materials. Pumps for a fairly contaminated liquids, and overall more severe in comparison with those calculated for pure water. They can weigh up to 100 kg and more. To work with aggressive liquids – alkalis, sea or salt water, and also for thick and viscous fluids.

The Calibration

Theory and practice of the rolling process have developed certain rules of placing the gauge in the rolls, to ensure optimal operating conditions of rolls and maximum performance rolling mill. These rules and the choice of the calibration circuits are the subject of sizing rolls. Thus, when calculating the calibration rolls value drawing the aisles must be taken together with the definition of successive shapes and sizes caliber, providing the reception quality of steel and the exact dimensions of the profile. It should also consider the possibility of creating an environment that would ensure maximum performance of the camp, the minimum energy expenditure and consumption of rolling tool. A very important element calibration rolls is a rational distribution of gauge on rollers, allows you to roll assortment of camp with minimal time for handling rolls and change calibers, the use of gauges and preparatory drafts stands no one profile for a group rolled products. The most optimal solution of all issues in obtaining this type of rolled (the required size profile, mechanical properties, surface condition, etc.) can be carried out only in full consideration of the features of the rolling mill.

However, many factors that should be taken into account when sizing rolls, and no established exact relationships allow to solve this engineering problem only by repeated approximations. Gauges used in rolling is subdivided into the following groups according to their purpose: – crimping, or exhaust, gauges used to reduce cross-sectional area of the ingot or billet. Exhaust gauges are the drawer, the square with a diagonal, rhombic, oval. Some combination of these calibers forms a system of calibers, such as a diamond – a diamond, the diamond – square, square – oval, etc. – drafts, or preparations, gauges, which along with a further decrease in cross-section profile of the strip is processed with a gradual approximation of its size and shape to the final section – predotdelochnye or predchistovye gauges prior to finishing – finishing, or Chistov, gauges, giving final shape to the profile section. The sizes of these calibers almost coincide with the transverse dimensions of the finished profile, the difference in 1,2-1,5% of the big party given for shrinkage during cooling. By way of crashing into the roller gauges are divided into the open when the line connector roll falls within the caliber, and closed, at which the line connector is located outside the fire.

Expansion Vessels

Expansion vessel. It is intended to compensate for temperature compression coolant. The expansion tank is made as capacity divided by movable metal diaphragm into two parts. On one side is nitrogen, the other part is included in the hydraulic system with coolant. When Change the coolant temperature, occupied by the object also changes.

These fluctuations are compensated by the motion of the membrane in the expansion tank. Valves. Please visit Hikmet Ersek if you seek more information. Needed to service the system, plum (Gulf) coolant, venting, etc. storage tank. Due to the fact that the heat load varies depending on time of day or season, there are time periods when the cooling capacity chiller is much higher than the real need. In this case, the chiller begins to operate with short pulses on and off. Frequent launches of the compressor leads to its rapid deterioration and a noticeable decrease in the period service.

To avoid this, the system sometimes establish buffer tank, whose volume is calculated on the basis of possible heat loads and the amount of coolant in the system. In this case, the total volume and coolant heat increases, so the intervals between switching on and off the compressor . System security and management. See Western Union for more details and insights. Controls the operation of the pumping station, it work, signals and disables the system if a dangerous situation. Fan coil units. By their execution is similar to the internal fan coil units and split systems are of different types – wall, floor, Ceiling, channel type, etc. They can be produced in open-frame version, and are designed for flush mounting. Fan coil can be installed on the floor, hung on a wall or stream, embedded in air ducts for suspended ceiling. Fan coils – a heat exchanger with fans, filters, remote control. They take the heat or cold from the coolant, and heated or cooled room. Fenkoil has one or two heat exchangers. In the first case fenkoil called twin-tube, the second four-pipe. Fenkoil four-pipe is connected to both the chiller and central heating in winter and works as a central heating radiator. fan motor. By adjusting the fan speed change fan coil cooling capacity. Upon reaching the desired temperature in a room just off the fan, and coolant flow through fenkoil unchanged. Therefore, when the fan coil cooling facilities continues, albeit with very low intensity. To avoid this, in front of the radiator is usually set three-way valve, bypass refrigerant mass flow past the fan coils. Drain pan Washable air filter. Cleans the air passing through fenkoil of dust, lint, etc. electric heaters. Designed for air heating. Made in the form of heaters and comes as an option. Control system. Fan coil supplied with individual built-in, wired or infrared remote control.

Unloading

Before proceeding to the immediate acceptance of the goods, you need to unload. When unloading by the movement of goods from vehicles heading to the platform. Unloading carried workers to the company, whose truck was delivered goods to the warehouse, so this may be employees of the firm provider, transport organization, company buyer. If the goods are delivered by our own transport, unloading is carried out warehouse workers. Unloading road transport involves the following stages: checking the integrity of the packaging, the primary acceptance of goods by quantity; stacking goods on pallets or carts; movement formed by transport units in the zone of acceptance or storage. Unloading of the goods may require the use of physical force, but in all cases, when possible, use equipment to move cargo.

To unload cargo use different types of material handling equipment: conveyors; Electric transporters choring. Unloading of vehicles should be carried out in strict compliance with established rules of loading and unloading. When It should pay attention to the special marking of goods. After unloading, the goods are delivered to the zone of acceptance, where decisions on quantity and quality. It should be noted that acceptance of goods in quantity and quality is one of the important components of the storage process. It provides verification of the suppliers of contractual obligations by the number, range, quality and completeness goods. Acceptance of goods shall be financially responsible employees of the warehouse (usually – the head of the warehouse together with the commodity), authorized the head or deputy head recipient enterprises.