Mobile pressure testing units
Technique for hydraulic tests of heating system
The Technology
After blocking the part of a heating main, each pipe is connected to the trunk pump. Then the water from one pipeline is pumped with additional pressure to another one. The drop in pressure indicates a possible leak.PSM has engineered a special offer for a heating system companies: mobile pressure testing units for strength and leakage testing of pipes before and after heating season.
Mobile pressure testing units allows you to test small sections of the heating main and shortens the period of the seasonal shutdowns of hot water up to 3 days.
There is no need to raise the pressure on the heat sources and test all the mains simultaneously. Mobile pressure testing units makes hydraulic tests of heating system more effective, prompt and safe.
Design of Mobile pressure testing units
The metal canopy protects the unit from precipitation and mechanical damage. It is provided with the side doors for the quick access to the main components. The canopy has special holders to move the metal pipe with a diameter of 20 cm and a length of 10 m.
A bypass line is equipped with a electric valve. It provides gradual increase of pressure during the hydraulic pressure testing.
The control system is made on basis of two microprocessor-based controllers. It is responsible for fully autonomous operation of the unit: it increases and holds the pressure, determines the breakthrough of the pipeline and shuts down the unit in case of an accident. All data is transmitted to a computer by wi-fi and allow you to monitor the work of the mobile pressure testing unit remotely.
Diesel engine +centrifugal sectional pumpMain elements of the unit are joined by the PTO. It allows you to disconnect the pump and operate at «idle» - for example, for warming up the engine before operating.
The trailer on the two-axle chassis allows transporting the unit by car of any kind to any part of the heating system.
The pressure and suction lines work effectively thanks to built-in sensors and pressure regulators.
Temperature -10° to +40°
Humidity > 75%
- the temperature of the water
- water consumption
- the pressure on the inlet and outlet
The unit’s capacities
The unit quickly locates breakouts
The mobile pressure testing unit tests small parts of the heating system in sequence. It is quickly to find a breakthrough and there is no need to stop all work at once.
It does not require to stop mass water supply
During the tests there is no need to stop the water supply to the whole areas of the city. You can carry out hydraulic testing of pipes avoiding any inconvenience to neighbouring areas.
It reduces the time of the compression works
Working hours are not spent on maintaining the pressure, bypassing the entire heating system and numerous checkpoints. As a consequence, the period of cessation of hot water supply is reduced from 14 to 3 days.
It extends the life of equipment of fixed stations
The mobile pressure testing unit tests more carefully taking care about infrastructure. It is particularly important in case of the large wear of heating mains.
It guarantees safety tests
It reduces the number of breaks and accidents, the risk of injury and damage to property both during and between tests. Regular pressure testing of the heating main with the help of the mobile pressure testing units allows you to keep heating networks in working condition.
Lineup
The lineup of the mobile pressure testing units includes 5 types, which differ on flow and maximum pressure provided. This broad range allows to choose the equipment for pipes of any configuration and status.
| Model | Engine | Flow, m3/h | Maximum test pressure, ATM |
|---|---|---|---|
| AOMC-16 | YAMZ/MMZ | 10-100 | 16 |
| AOMC-20 | YAMZ/MMZ | 10-200 | 20 |
| AOMC-25 | YAMZ/MMZ | 10-200 | 25 |
| AOMC-30 | YAMZ/MMZ | 20-250 | 30 |
| AOMC-40 | TMZ | 20-250 | 40 |
It is possible to use Doosan (South Korea) or Volvo Penta (Sweden) engines.
Details
Pressure gauge
Duplicate pressure gauge
The closure for the suction line with electric drive
The filter and water drain
The flow meter with the panel of flow readings
The check valve to protect against the water hammer and the valve to disconnect from the heating main
Rings for attaching a sling
Blinds of the radiator
The muffler with a gas-jet system of filling the pump
External led lighting with moisture and vibration protection
Tool box
Anti-vibration supports
The mobile pressure testing units at work
Largest owners:
T Plus (KES-Holding) - 40 unitsMoscow heat distribution company -30 units
MP Heating (Obninsk) - 5 units
Ryazan generation company - 5 units
The portal ikirov.ru: The new way to hold hydraulic tests in Kirov
The portal uralinform.ru: Ekaterinburg can cancel hydraulic tests
Information Agency «Komiinform»: Syktyvkar mains have passed the "mobile" tests at first time
Udmurt utility systems: Compression machines UKS: in the service of prompt and safety of hydraulic tests
Information-analytical portal «JustMedia» (Ekaterinburg): Pilot tests of heating mains with the use of mobile unit for pressure testing
Select by power: 10-30 kW,