During the period of sudden changes in temperature is very important.proper operation of the heating system. It is the heat in the house that ensures the normal existence of its inhabitants. Elements of this system that work under pressure have some features of operation in difficult conditions.
Therefore, to prevent leakageradiator, pipeline breakthroughs and other troubles, it is necessary to resort to preventive measures. Pressure testing of a heating system is a set of measures consisting in assessing the degree of readiness of equipment for efficient operation.
The main requirements that apply toheating of residential buildings and apartments, are in the smooth operation and durable operation of communications. The serviceability of the entire system is laid at the design stage, and durability depends primarily on the quality of service. It is flushing and pressure testing of heating systems that will ensure a long service life of the coolant.
On the quality of heating and the efficiency of its supplyRust, scum, dirt and sand deposits have a great influence. To eliminate the influence of these negative factors, there are two possibilities. First, to improve the quality of the coolant to the required rate. The second possibility is the pressure testing of heating systems, which are produced regularly.
It is rather difficult to improve the characteristics of the water, and it is quite possible for everyone to carry out maintenance work on cleaning pipes, radiators and boilers.
The scum appearing on the pipe walls causesmechanical wear of the metal. Due to deposits, the heat transfer of the pipes decreases, their diameter decreases. In this case, the friction of the coolant against the walls increases significantly, which causes a drop in the velocity of the flow of hot water. Therefore, the temperature decreases due to thermal resistance.
All these effects of scaling causeincreased fuel consumption. This will contribute to higher costs, and the effectiveness of systems will constantly decrease. In this regard, pressure testing of heating systems is an extremely important event.
Pressure is the main characteristic affectingon the promotion of the coolant and the quality of heating at home. At increase in indicators of pressure more, than for 40%, pressure testing of system of heating is necessary. The pressure depends on the number of floors in the building (the higher the number of floors in the building, the higher the pressure level will be). Hot water moves through the pipeline under the action of various hydraulic forces. With strong jumps, the pressure may exceed the permissible values. To avoid this, it is necessary to carry out maintenance work.
Опрессовка систем отопления начинается с preparatory part. You should carefully examine all components of the structure. To create tightness, packing glands are added. If there is a need, then the insulation of the pipeline is restored. After that, the building is cut off from the general house heating system with the help of plugs.
Work begins with filling the pipes with water.The system is connected to the water supply. The liquid enters under low pressure and pushes air out of the apparatus, filling all the nodes. Gas leaving the system should be lowered, and for several visits.
To detect water leaks in an apartment building, air must be released at a certain pressure. Therefore, flushing and pressure testing of the heating system is carried out using a press.
Падение давления во время опрессовок говорит о seal failure and leakage. The place of accident can be various threaded connections, batteries, shut-off units and other elements of the system. It is necessary to find their localization, then partially or completely drain the water and carry out repair work on the damaged areas.
Pressure testing of heating systems is performed until the working pressure is stabilized. For achievement of its optimum size special pumps are used.
Currently, three main technologies are used to flush the heating system. Each method has certain advantages and disadvantages.
The most popular is exactlychemical Technology. Scale from pipes is removed with reagents. The composition of such substances include solvents, alkalis, mineral and organic acids, chelating agents. It is necessary to work with them very carefully, since they are very toxic.
Chemical flushing and crimping systemheating is carried out through special equipment: pump, hoses and tank. The solution or powder for operation must be selected depending on the material of the pipeline. Work is done in several stages, lasts a couple of days. At the same time, the whole system continues to work, and the room receives heat.
The main advantages of this type are ease of implementation, increased service life of the pipeline and full restoration of the capacity of the heating system.
Суть метода заключается в устранении накипи и various deposits of water under pressure. The liquid enters the system through hoses connected with special nozzles. The effectiveness of this method is significantly higher than during chemical cleaning. But the cost of work increases.
Hydraulic flushing is optimal for cleaning cast iron batteries. In this case, the use of chemicals will be less effective.
For the implementation of this cleaning method uses a special pneumogun. The tool is used to clean the elements of the heating system with a diameter of less than 150 mm.
The technology of the method allows cleaningindividual nodes and remote sections of the pipeline. Moreover, it is possible to operate with an air pistol at a distance from the object (up to 50 meters). Work is done very quickly and efficiently, without having to turn off the heat in the houses.
Основным инструментом для проведения работ is a compressor that creates pressure of water or solution. The range of devices on the market is quite wide, each device has its own characteristics and different functions. Therefore, the press for crimping the heating system must be selected correctly.
When buying a tool should pay attentionon technical indicators of the device: water consumption, pulse pressure indicator and others. You should also consider the availability of additional features, such as the ability to add disinfectants to the water.
The compressor automation system is also quitehelpful. If it is available, the work will be safer, and the whole process will be controlled. The unit must be compact and reliable so that its use does not cause inconvenience.
To avoid trouble with heatingsystem, it is necessary that experts regularly carry out maintenance work. To perform all the necessary actions, it is necessary to conclude an agreement on pressing the heating system, in which all features of the process, deadlines, cost and obligations of the parties will be noted. The procedure should be carried out in the summer, at least once in 5 years. And then the heating in the house will be supplied without interruptions and linings.
