JPS5825010B2 - Flexible conduit gas-filled cable sheath connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corrugated sheath connection for a flexible conduit gas cable.

Conventionally, to connect the corrugated sheath in this type of gas cable, a connecting collar is used, and an O-ring, backing, etc. are loaded into the fitting gap between the collar and the sheath, and during welding work, the voltage-resistant property is maintained inside the sheath. Although efforts were made to prevent welding dust from entering, which could cause deterioration, the work was extremely difficult and required highly skilled techniques, which took a long time.

The present invention was conceived in view of this point, and an embodiment of the present invention will be described below with reference to the drawings. 1. The outer diameter formed at the end of the corrugated sheath is equal to or greater than the outer diameter of the corrugated sheath. A straight pipe portion with a smooth outer circumferential surface, 2 a connecting collar with stepped portions 3 formed on the inner circumferential surface of both ends, 4 an O ring, and 5 a holding ring. The collar 2.0 ring 4 and retainer ring 5, which have been inserted over the corrugated sheath, are pulled over and covered with the straight pipe part 1°1 of both the corrugated sheaths as shown in the figure, and the straight pipe part 1 and Loading the O-ring 4 into the gap between the collar 2 and the stepped portion 3, and pressing the O-ring 4 from the side with the presser ring 5, press the collar 2, the presser ring 5, and the sheath straight pipe section 1 with the presser ring 5. are welded together to form a connection.

According to the present invention, as described above, since the straight pipe part 1 is formed at the end of the corrugated sheath, the connecting collar 2 is closely connected to the straight pipe part 1.
can be inserted, and there are stepped portions 3 at both ends of the collar 2.
is formed in the gap between the stepped portion 3 and the straight pipe portion 1.
Since the J-song is loaded and pressed by the holding ring 5, and the holding ring 5 is welded to the collar 2 and the straight pipe section 1, there is no risk of welding dust entering the pipe, and the pipe is airtight. Excellent connections can be obtained, and the work is simple and does not require highly skilled techniques, such as machining the corrugated sheath terminal and connecting collar into a perfect circle at the installation site, unlike conventional methods. It has the great advantage that a complete connection can be obtained at low cost.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing one embodiment of the connecting portion of the present invention. 1: Straight pipe part of corrugated sheath, 2: Connection collar, 3: Step part, 4: O-ring, 5: Holding ring.

Claims (1)

[Claims] 1. A connecting collar is placed over a straight pipe section of the sheath having an outer diameter equal to or larger than that of the sheath formed at the ends of the corrugated sheaths to be connected, and a connecting collar is placed over the straight tube section of the sheath formed at the ends of the corrugated sheaths to be connected. A flexible pipe characterized in that an O-ring is loaded in the gap between the straight pipe part and pressed from the outside through a retainer ring, and the collar and the retainer ring and the retainer ring and the sheath straight pipe part are welded, respectively. Gas cable sheath connection.