Lug Type Air Expandable Shaft

Ten characteristics of convex key strip type air expansion shaft expansion tube
The ten characteristics of the convex key strip type inflatable shaft expansion tube are as follows:
1. Reliable sealing connection: no coupling between tubes, good sealing and strong bearing capacity;
2, the top structure is special: the top of the single is provided with a guiding bell mouth, which is convenient for lifting the pipe string;
3, the suspension seal is firm: the rubber is firmly vulcanized on the body, no cracking, reasonable arrangement, small inter-stage grinding resistance, good sealing; different rubber types can adapt to different well conditions, thermal wells, etc.;
4, excellent material properties: tensile strength, yield strength, elongation is 20-100% higher than general materials;
5, material diversification: to adapt to different well conditions, corrosion of serious wells with stainless steel expansion tubes, low-alloy steel expansion tubes for drilling.
6, intelligent swing expansion head: intelligent swing, anti-blocking card;
7, reliable suspension: a variety of suspension combinations, to ensure the suspension force and duration, suspension force ≥ 60 t;
8. The construction process is preferred: the pipe string and the tool can be circulated and washed after being down to the position;
9, good pressure resistance: anti-internal pressure ≥ 60MPa, anti-external pressure ≥ 30MPa;
10. Pressure-resistant launching device: The launching base has strong pressure resistance and is easy to grind.

Key type air expansion shaft: suitable for items with heavy mechanical load capacity. The key type air expansion shaft expands from a single key strip, and the fulcrum spreads to each key strip to balance the force. After inflation, the unilateral expansion height can reach 5mm to 6mm. The main body of the shaft is made of high-quality steel pipe, the surface is chrome-plated, and the aluminum convex key is flexible and flexible; the fast filling and exhausting nozzle and the high-quality rubber liner are arranged, the sealing effect is good, the shaft head can be disassembled, and the maintenance is convenient and the service life is long.
 The key bar type air expansion shaft is quite common in the rewinding and unwinding mechanical equipment, and the scope of use is quite wide. Although the production process of the inflation shaft is quite mature, problems that may occur, such as air leakage, are still avoided. If there is a gas leak in the inflation shaft, it may directly cause the machine to malfunction and cause serious damage. How do we solve the problem of leaking the airbag shaft?
Usually, the air shaft leakage we encounter has the following possibilities:

1. There is a gap in the sealing ring of the slip type air expansion shaft. The treatment method at this time is very simple. As long as the sealing ring is reinstalled, the sealing rubber can be applied to prevent the air shaft from leaking.
2, gas leakage is also a common possibility of air leakage from the inflation shaft, at this time as long as the replacement of the inflation nozzle can solve the problem.
3. The looseness of the pressure ring is also one of the possible causes of air leakage from the inflation shaft. The solution is to tighten the pressure ring.
4, the leak caused by the rupture of the hose is the most serious, and it is also more troublesome to handle than other conditions. It is necessary to disassemble the shaft head and replace the hose.

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