Checking the health of communicationsystems is carried out in different ways. So, in the case of wiring, clamping pliers are used, and the gas supply circuits are checked using multifunction thermostats. Separate place in the diagnostic operations of this kind is the crimping of pipes, the features of which include the scale and technological complexity of the execution. In addition, this procedure is an inconvenience to direct users of utilities, so service organizations carefully choose the timing of such tests. It is worth knowing about the intricacies of this procedure to private house owners who wish to extend the operational life of the pipeline.
Why do we need to press the pipes?
Traditionally, it is believed that the crimpingaims to accomplish two tasks. First of all, this is one of the controlling measures of prophylactic properties, which allows you to determine the condition of the pipes. The specialists thus check the contour for the integrity and quality of the installation, if before that the installation or repair of the pipeline was performed. The second function of this procedure is the performance of washing operations. The technology itself only implicitly involves this operation, but in essence the effect is the same as with targeted purging procedures. In this case, far from all engineering systems, the pipe is pressed. Water in heating systems, for example, necessarily undergoes a system in the summer. However, even in heating systems, this procedure is not performed in new homes, where there are special points of regulation of heat supply.
When is it necessary to perform crimping?
Pressure testing of the pipe is subjected tofor different reasons. As already noted, the operation is performed after repair work and before the first launch of new engineering networks. Also, crimping is subjected to all the structures that are connected via a coupling method through the coupling. This is due to the fact that the bundle of the fitting and the pipe is considered the weakest zone in the contours. To confirm the quality of this connection, the pipe is tested for checking the tightness and mechanical strength of the joint. Regular seasonal testing of pipes is also carried out. This usually applies to heating systems, which are checked in preparation for a new heating cycle.
Sensitivity of plastic sewerage tomechanical damage and deformation processes is also the reason for its regular diagnosis. In this case, the crimping of the pipes can be carried out one-time, if before that, the channel has been cleaned or the new sections of the joint have been soldered.
Preparatory work
First of all, experts examine the shut-offreinforcement, valves and other components with fitting fittings. The test should be carried out in the optimal technical conditions of the pipeline operation, which will allow more accurate detection of deviations from the normative operating state. In order to improve the tightness of the circuit, in some cases additional packing glands are also added to the design - especially if the heat pipes are to be pressurized, which, in case of a critical load, can itself provoke leaks. In order to avoid such phenomena, pipeline insulation is also checked. If a material is found to be defective, specialists update it. Also, a prerequisite for performing crimping is cutting off the test channel from the central highway.
The tool for pipe crimping
Usually the workflow is provided by a specialpressure test pump, which has sufficient power for a specific circuit. For lines with small volumes, it is sufficient to use a supercharger with a capacity of about 2-3 l / min. It is also important to determine the working pressure that a particular unit is able to support. For example, a cast iron pipeline is tested at a pressure of 1.5 Atm. If the testing of plastic channels without pressure is planned, then we can speak about a pressure of 2 Atm. The pressure network is subjected to a test at 15 Atm. At the same time, it is quite enough for a private house to use a manual press for pressing the pipes, which is supplied with a pump and can support the possibility of automatically adjusting the discharge indicators.
Technology execution
Start work with the shut-off valveson both sides of the site. If a sewage test is planned, it can be blocked with special plugs made of plastic or rubber. Next, a connection is made to a section of the source that will pressurize. This is one of the pumping units considered above, which must be connected to the line using a suitable size adapter. The subsequent actions depend on the type of system in which this method is applied. For example, pressing the metal-plastic sewage pipes is the simplest. It is enough to insert the pump connection into the revision and adjust the operation of the equipment to the appropriate power potential. In the case of the heating system, the process is controlled through special cranes, which must be installed on the batteries.
Conclusion
The result of crimping should be the dataThe pressure gauge connected to the test set and pipes. Specialists take pressure measurements in the circuits before the test begins. As a rule, the crimping of pipes lasts about 8-10 hours, after which the readings from the manometer are again taken off. A good result will be a zero difference between the two readings of the device, but this is rare. Minimal deviations are also permissible, but even with a big difference, do not immediately rework the pipeline. Perhaps the changes in the pressure indices were due to other reasons not related to the quality of the sealing in the circuit.
