描述
Contact Information:|WhatsApp:+8615972752793|Email:Luben@youlongpetro.com
Preface
Thank you for choosing Petrokey products. This manual provides comprehensive guidance for the safe and efficient use of the SZJ-ZN Rotary Torque Measuring System, What’s app +8615972752793 Luben@youlongpetro.comhelping you maximize product performance.
Published by Hubei JPIM Co., Ltd. after rigorous proofreading, this manual may still contain minor imperfections. Hubei JPIM is committed to product innovation and service improvement, so all information herein is subject to change without prior notice. The statements, information, and suggestions in this manual do not constitute any express or implied warranty.What’s app +8615972752793 Luben@youlongpetro.com Pictures are for reference only; the actual product shall prevail in case of discrepancies.
This manual is an integral part of the product. Please keep it properly for future reference during the product’s service life.What’s app +8615972752793 Luben@youlongpetro.com Eye-catching signs are used for key notes with the following meanings:
- Caution: Requires strict adherence to subsequent instructions. Improper operation may cause severe personal injury and accidents.
- Warning: Demands special attention. Improper operation may lead to serious product damage.
No part of this document may be reproduced, copied, or translated into any language without the prior written consent of Hubei JPIM Co., Ltd. SY®, Petrokey®, JPIM®, Petron-Jianghan®, and PTJH® are registered trademarks of Hubei JPIM Co., Ltd. Other trademarks belong to their respective owners.
- System Overview
1.1 Core Function
The SZJ-ZN Rotary Torque Measuring System is a specialized device for mechanical drilling rigs driven by rotary chains. What’s app +8615972752793 Luben@youlongpetro.comIt indirectly measures the torque exerted by the rotary table on the drill stem by detecting the pull force of the tight side of the rotary drive chain, providing real-time and accurate torque data for drillers to monitor drilling operations.
1.2 Main Technical Specifications
| Parameter |
Specification |
| Working Temperature |
-30℃ ～ 65℃ |
| Relative Humidity |
0% ～ 90% |
| Measuring Range |
0 ～ 45 kN·m (displayed as 0 ～ 500 scales) |
| Measurement Error |
≤ ±2.5% FS (Full Scale) |
| Pressure Transmission Medium |
45# Transformer Oil |
1.3 System Composition
The system consists of four key components that work synergistically to ensure reliable performance:
- Idler-Type Rotary Torque Sensor: The core detection component, which converts chain pull force into hydraulic pressure.What’s app +8615972752793Luben@youlongpetro.com It is available in specifications matching different chain types (single/dual row, 1.5″/1.75″/2″ pitch) to fit various drilling rigs.
- Rotary Torque Gauge: Installed in the driller’s console, it receives hydraulic signals and displays torque values via a pointer.What’s app +8615972752793Luben@youlongpetro.com It features a zero-adjustment knob for calibration.
- Damper Valve: Reduces pointer vibration of the torque gauge, ensuring stable and readable measurements by regulating hydraulic fluid flow.
- Hydraulic Connecting Hoses: Transmit hydraulic pressure between the sensor and the gauge.What’s app +8615972752793Luben@youlongpetro.com Two lengths (10m and 15m) are available for different installation scenarios.
Figure 1-1: Schematic Diagram of SZJ-ZN Rotary Torque Measuring System (Including idler-type sensor, torque gauge, damper valve, and hydraulic hoses)
1.4 Working Principle
The system operates based on the proportional relationship between chain pull force and rotary torque, following this precise process:
- Install the idler-type sensor under the tight side of the rotary drive chain. What’s app +8615972752793Luben@youlongpetro.comThe sensor’s idler jacks up the chain, forming a fixed angle between the chain and the idler.
- When the rotary table applies torque to the drill stem, What’s app +8615972752793Luben@youlongpetro.comthe drive chain generates a downward pressure on the sensor’s idler—this pressure is directly proportional to the rotary torque.
- The sensor converts this mechanical pressure into hydraulic pressure through its internal hydraulic system. What’s app +8615972752793Luben@youlongpetro.comThe hydraulic pressure is transmitted to the bourdon tube of the torque gauge via the connecting hoses.
- The free end of the bourdon tube deflects under hydraulic pressure. This deflection is amplified by a mechanical mechanism,What’s app +8615972752793Luben@youlongpetro.com driving the gauge pointer to deflect and indicate the corresponding rotary torque value.
For bidirectional torque measurement (clockwise and anti-clockwise), two identical sensors can be installed. Users can choose one or two gauges; a single gauge requires manual switching between the two sensors.
- Installation, Adjustment and Operation
2.1 Installation of Rotary Torque Sensor
Sensor installation varies slightly for closed and half-closed chain boxes (the latter requires no hole drilling). What’s app +8615972752793 Luben@youlongpetro.comThe following takes closed chain boxes as an example:
2.1.1 Installation Preparation
Ensure the chain box has sufficient internal space (sensor width: 160mm). Select the sensor specification (chain pitch, single/dual row) matching the drilling rig’s drive chain. Prepare tools including welding equipment, drills, and bolts.
2.1.2 Step-by-Step Installation
- Position Selection: The optimal installation position is under the tight side of the chain in the drive chain box, with the idler placed midway between the active and driven sprockets. What’s app +8615972752793Luben@youlongpetro.comThe sensor’s mounting plate plane should be parallel to the tight chain centerline (when taut), with a distance of 350mm. The sensor’s rocker arm free end faces the active sprocket.
- Chain Box Modification: Drill a 600mm×400mm inspection window opposite the sensor position, fitted with a cover and gasket to maintain the chain box’s rigidity. What’s app +8615972752793Luben@youlongpetro.comDrill a Φ28mm hole near the sensor’s hydraulic cylinder for hose routing, ensuring the hole edge is smooth and flat.
- Sensor Fixing: Bolt the sensor’s welding base plate to the sensor base. Place the sensor in the chain box, What’s app +8615972752793Luben@youlongpetro.comwith its side facing the inspection window and the rocker arm free end pointing to the active sprocket.
- Position Calibration: Adjust the sensor so the centers of the idler, active sprocket, and driven sprocket are coplanar. Ensure the chain roller sits on the idler’s flange without the chain connecting plate touching the idler (to avoid damage). What’s app +8615972752793Luben@youlongpetro.comWeld the base plate firmly—place the 130mm-thick base plate in the middle of the chain box bottom during welding.
- Hydraulic Fitting Installation: Mount the hydraulic elbow on the chain box to guide the sensor’s hydraulic hose outwards.
Figure 2-1: Installation Drawing of Idler-Type Rotary Torque Sensor
| 1 |
SZJ-ZN.1-9 |
Installation board |
| 2 |
GB32.1-88 |
Eye bolt M8×18 |
| 3 |
GB32.1-88 |
Eye bolt M8×40 |
| 4 |
SZJ-ZN.4.1 |
ldler assembly |
| 5 |
SZJ-ZN.4-2 |
Support arm |
| 6 |
SZJ-ZN.1A-5 |
Pin shaft |
| 7 |
SZJ-ZN.4.4 |
Piston assembly |
| 8 |
SZJ-ZN.1.8 |
Support bracket |
| 9 |
GB825-76 |
Lifting bolt M12 |
| 10 |
SZJ-ZN.1-16 |
Spacer |
2.2 Installation of Rotary Torque Gauge
- Fix the driller’s console (equipped with the torque gauge) in front of the driller to ensure clear visibility of the dial.
- Connect the hydraulic hose (tagged “rotary torque gauge”) to the corresponding connector on the driller’s console.
- Pressure Test: Connect a piston pressure gauge to the torque gauge, What’s app +8615972752793Luben@youlongpetro.comgradually apply 0～6MPa pressure in 1MPa increments. Verify the gauge pointer moves smoothly within the 0～500 scale range, with no oil leakage at connections. Repeat the test during pressure reduction.
2.3 Hydraulic Hose Connection
- Connect one end of the 10m or 15m hydraulic hose (tagged “rotary torque gauge”) to the sensor’s built-in hose, What’s app +8615972752793Luben@youlongpetro.comand the other end to the matching connector at the back of the driller’s console.
- Open the air exhaust valve on the driller’s console. Inject oil from the console’s oil injection port to purge air from the copper and hydraulic hoses (check for bubble emission). Close the valve once air is fully exhausted.
2.4 System Adjustment
- Fully open the damper valve to ensure unobstructed hydraulic flow.
- Lift the chain to avoid contact with the sensor’s idler. What’s app +8615972752793Luben@youlongpetro.comAdjust the gauge knob to set the pointer to zero, then lower the chain.
- Connect a hand pump to the torque gauge’s oil injection port (inside the driller’s console).What’s app +8615972752793Luben@youlongpetro.com Inject oil while opening the air exhaust valve to purge residual air. Close the valve and continue injecting until the gauge reads 50～70 (initial no-torque value).
- Lock the rotary table brake, gently engage the rotary table clutch to generate large chain pull force. The gauge should read 300～ If not, add or drain oil and repeat the adjustment.
- During operation, slowly adjust the damper valve (clockwise to reduce opening) to minimize pointer vibration and ensure stable readings.
- Maintenance and Important Notes
3.1 Regular Maintenance
- Before moving the system, turn off the power, disconnect all hoses, and install protective caps on connectors to prevent contamination.
- Route hoses safely to avoid collision, damage, or interference with drilling operations.
- Regularly inspect the gap between the sensor’s induction surface and the chain, What’s app +8615972752793Luben@youlongpetro.comand tighten loose connections caused by vibration to prevent component damage.
- Check hoses for cracks and connectors for looseness; replace damaged hoses promptly.
- Keep the sensor’s induction surface clean; avoid contamination by metal shavings or oil containing metal particles to prevent magnetic short circuits.
3.2 Key Notes
- Sensor specification must match the chain type (pitch, single/dual row). Mismatched specifications will cause system failure.What’s app +8615972752793Luben@youlongpetro.com
- The chain box inner width must be greater than the sensor’s 160mm width to avoid friction between the sensor and box walls.
- Hand pumps (Model: Q/JY250-84, with 5m hydraulic hose) and 45# transformer oil are essential accessories,What’s app +8615972752793Luben@youlongpetro.com identical to those used for weight indicators. Prepare them as needed.
- Do not disassemble the instrument while powered on to avoid electric shock or component damage.
- Troubleshooting
| Symptoms |
Potential Causes |
Remedies |
| Gauge pointer vibrates severely |
Damper valve not properly adjusted; air in hydraulic system |
Slowly adjust the damper valve; purge air by injecting oil |
| No or abnormal gauge reading |
Hose connection loose; oil leakage; sensor-idler position misaligned |
Tighten connections; repair leaks; re-calibrate sensor position |
| Sensor damage |
Chain connecting plate contacts idler; insufficient chain box space |
Adjust sensor position; replace damaged sensor; verify chain box dimensions |
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Contact info
What’s app +8615972752793 Luben@youlongpetro.com
You Long Petroleum Machinery Spares ltd.(YOU LONG PETRO) engages in the export of the petroleum equipment and materials and provides materials and equipment for CNPC and SINOPEC’s overseas projects. Established in 2003,YOU LONG PETRO has started the manufacturing and supplying of petroleum materials and equipment since 2003.YOU LONG PETRO has provided its products and services to 36 countries and regions across the globe.YOU LONG PETRO’s export performance has come out top in central enterprises in successive years and it has been acknowledged as China’s largest supplier of petroleum and petrochemical materials,which is based on design,production,sale and technical service.Our products are completely interchangeable with the following enterprises.
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