SOLY TB Series Hydraulic Bolt Tensioner
- Maximum working pressure 150MPa (1500BAR).
- It can work with multi-specification bolt drawing head to save cost.
- Fast speed, high precision, multiple tensioner can work synchronously.
- Widely used in: petroleum, chemical, electric power, wind power, steel, heavy machinery, metallurgy, shipbuilding, construction, cement and other industries.
The Advantages Of Using An Hydraulic Tensioner
Perfect adjustment of beltchain tension at all times – Absorption of tension variation . Resistance totemperature variations-Longer lifespan- Less noise.
The main advantage of using a hydraulic tensioner is its ability to rapidly compensate forchanges in belt or chain tension due to engine temperature. As the engine warms up the beltor chain will lengthen.
The hydraulic tensioner will automatically compensate for thisensuring optimum tension is maintained to prevent the chain or belt from slipping and soavoiding engine damage.
Basic use of the hydraulic bolt tensioner
. CONNECTING THE EQUIPMENT:
Use quick-change couplings to connect the bolt tensioner, the tubing and the manual hydraulic pump.
. Pre-tensioning force setting:
Calculate the required pressure of the hydraulic pump station according to the design requirements and set the pressure by adjusting the high pressure relief valve handle of the hydraulic pump station.
. TENSION OPERATION:
Start the pump station, lock the unloading handle (clockwise), then turn the reversing handle to position A. The pump station starts to press up and each hydraulic bolt tensioner stretches the screw with the same tension.
. TIGHTEN NUTS:
As the stretching makes the bolts elongate, a gap is created in the nuts that were sewn together before the stretching, and the nuts are rotated with the joystick so that each of the nuts that are being stretched at the same time is sewn together with the support surface again.
. Unloading:
turn the unloading handle to the unloading position (counterclockwise), the piston resets by disc spring.
Specific operating procedures for hydraulic bolt tensioners
. Installation and Inspection:
– Ensure fastener surfaces are flat and free of debris such as paint, metal shims, etc.
– Install the support ring and tensioner onto the hydraulic bolt, connect the high pressure hose and open the hydraulic pump relief valve.
. Pre-tighten and unscrew:
– Use the toggle to tighten the tensioner clockwise to press the tensioner back to the low position, maintaining sufficient working travel.
– Start the hydraulic pump and check each tensioner lift for proper travel, if abnormal check and properly connect the high pressure hose or replace the tensioner.
. Remove the nuts:
– When the pressure reaches the specified value for disassembly, loosen the nut counterclockwise with the toggle lever, taking care not to loosen too much or not enough.
– After the hydraulic pump has relieved the pressure, use the toggle to confirm that the nut can be loosened freely, then the tensioner can be removed.
. Install the nut:
– Install the hydraulic nut onto the screw, manually tighten and note the up and down direction.
– Tighten the hydraulic nut in two stages, the first to 2/3 of the specified value and the second to the specified value.
– Check tightening with the toggle at any time during the process to ensure that each nut reaches the specified preload.
Real-World Case Study: Offshore Oil Rig Maintenance
One of the most challenging environments for bolting operations is offshore oil and gas platforms. These platforms are subjected to extreme conditions such as high humidity, saltwater exposure, and vibration. The SOLY TB Hydraulic Bolt Tensioner has been used successfully on multiple offshore platforms to maintain the integrity of critical joints and connections.
- Outcome: During routine maintenance operations on an offshore oil rig, engineers used the SOLY TB Hydraulic Bolt Tensioner to secure bolts on critical joints in high-pressure piping systems. The tool’s performance, combined with its ability to provide consistent tensioning, prevented leaks and failures in the bolted connections, thereby maintaining operational integrity and reducing maintenance costs. The tool’s resistance to harsh conditions, including seawater corrosion and extreme temperatures, made it an ideal choice for these applications.
