Thermal shock and cyclic pressure bench for pipelines

Main functions

The “ThermShock” is a test rig for testing the resistance of pipes to hot water circulation, temperature cycling and static pressure, according to EN 12293 or EN ISO 19893.

It consists of a hot and cold water generation system and a test area for fixing the tested pipes in accordance with the standards.

Operating mode

Find out how our thermal shock and cyclic pressure tester for pipes works.

Test area

The pipe elements to be tested are fixed to a “wall” in the test area on profiles using tooling. The different types of tooling allow for full fixation or allow for degrees of freedom in accordance with the standard. Part of the pipe under test can be put under tension by means of a manual tensioning system equipped with a load cell (up to 20,000N).

The test area is equipped with a hoist that facilitates the placement of heavy pipe components.

This area is enclosed by transparent doors which prevent the risk of burns and water splashes in the event of a leak in the pipe being tested.

The lower part of the test area consists of a leakage recovery sink. In the event of a leak, an automatic detection system stops the test immediately.

The test area is equipped with a cooling system to maintain the air in the area at a temperature <40°C.

Cyclic pressure test bench for pipelines

Hot and cold water unit

The pipe is connected at both ends to the hot and cold water generation unit.

This unit has 2 tanks (1 hot and 1 cold), which are temperature-controlled. The heating and cooling energy supply is provided by superheated water and chilled water loops (not included) connected to the tanks by heat exchangers.

The hot water circulation circuit is also equipped with an electric heater, which ensures that the temperature is maintained up to 110°C.

The system ensures :

the generation and regulation of pressure, static or dynamic
the regulation of a circulation flow rate
switching from the cold water circuit to the hot water circuit and vice versa, thanks to automatic valves (thermal shocks)
Filling and emptying the pipes.

The thermal shock generation system is optimised to minimise energy losses during changeover by minimising the mixing of hot and cold water. The temperature boost system compensates for the thermal inertia of the pipe itself, to ensure a more accurate thermal shock.

Control unit

The unit is controlled by a computer equipped with a dedicated HMI.
Main functions :

Active synoptic and manual control of all bench elements
Configurable graphics for all measurements
Editing, saving and reading of programmable test sheets, to set up automatic tests
Management of automatic tests with display of the progress and estimation of the remaining time
Measurement calibration system

Benefits

Energy saving
Flexible testing (static pressure, hot water circulation, temperature cycling)
Easy to implement tests
Automatic test programs
Automatic test report
Removable and mobile test area

Bench developed to meet these standards:

EN-12293

EN-ISO 19893

See all standards

Cyclic pressure bench test area for pipes

Thermal shock test bench for pipes

ThermShock benefits

Automatic test reports

The automatic analysis and reporting software allows, from the measurement files, the analysis of each test function according to various standards, the display of curves and numerical results and the edition of an automatic test report.

Energy saving

A mixed water distributor, heat pump and closed-loop water circulation for energy savings.

Reproductibility test

Homogeneity of test reports regardless of the test bench used.

TECHNICAL CHARACTERISTICS of the Thermal Shock and Cyclic Pressure bench for pipes

Specifications	ThermShock
Hydraulic performance
Maximum DN of the pipe tested	DN110
Max static pressure	16 bars
Max. dynamic pressure at 100 l/min	12 bars
Accuracy of steady-state pressure regulation	+/-0,5 bar
Maximum flow	300 l/min
Minimum cooling control temperature	15°C
Accuracy of cold temperature control	+/-5°C
Maximum temperature for hot regulation in thermal shock	95°C
Maximum temperature of hot regulation in circulation	110°C
Accuracy of hot temperature control	+/-2°C
Delta T max in the pipeline in established circulation	< 5°C
Accuracy of temperature measurement	+/-0,5°C
Accuracy of pressure measurement	+/-0,3bar
Maximum traction force	20 000 N
Force measurement accuracy	classe 0,2
Maximum hoist force	100 kg
Integrated energy consumption meter
Dimensions of hydraulic unit
Length	1 500 mm
Depth	1 200 mm
Height	1 950 mm
Dimensions of the test area
Length	4 000 mm
Depth	600 mm
Height	2 500 mm