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A steel pipe end sealing ring and sealing device

A technology of end sealing and sealing ring, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of difficult sealing methods and increase in the size of test pressure head, so as to save costs, improve efficiency, and increase usage range effect

Active Publication Date: 2016-06-08
QINGDAO ZHONGRUITAI MESNAC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it comes to the high-pressure stage, the size of B and B1 will need to be doubled, and the size of the test pressure head cannot be increased infinitely. Therefore, it is very difficult to use the external wrapping sealing method on the equipment under high pressure.

Method used

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  • A steel pipe end sealing ring and sealing device
  • A steel pipe end sealing ring and sealing device
  • A steel pipe end sealing ring and sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like figure 1 , 2 , 3, 3a, a steel pipe end sealing ring, including a sealing ring body 1, a support block 2, the support block 2 is a fan ring, the junction of an end face of the sealing ring body 1 and its inner circumferential surface, an annular groove is arranged The support block 2 is evenly distributed in the annular groove, the support block 2 body is provided with a pin, the pin connects the support block 2 and the sealing ring body 1 together, and the end face of the sealing ring body 1 without the support block 2 is provided with a distance The end face and the steel pipe sealing skirt 3 extending obliquely to the steel pipe sealing surface, the sealing ring body 1 is provided with the junction of the end face of the support block 2 and its outer circumferential surface, and an end face sealing skirt 4 extending obliquely away from the end face is provided;

[0043] The angle formed between the edge of the steel pipe sealing skirt 3 against the surface of th...

Embodiment 2

[0045] like Figure 4 , 4a , 4b, set the pressure-bearing steel pipe (ie pressure test pipe 9) to be inserted from left to right. The sealing device using the steel pipe end sealing ring of the first embodiment includes a steel pipe end sealing ring, a sealing head 5, and a positioning sleeve 6, and the positioning sleeve 6 is matched with the sealing head 5; the inner cavity of the sealing head 5 is provided with a groove 51. The sealing ring at the end of the steel pipe is placed in the left part of the groove 51 (the pressure test tube is inserted from left to right), and the end face of the supporting block 2 on the sealing ring at the end of the steel pipe is closely fitted with the inner surface of the left end of the groove 51; the end face is sealed The outer edge of the skirt 4 is in close contact with the inner surface of the peripheral wall of the groove 51;

[0046] The left part of the positioning sleeve 6 is provided with a limit ring 61; the right part of the ...

Embodiment 3

[0049] like Figure 5 , 6 , 7, a steel pipe end sealing ring, including a sealing ring body 1, a support block 2, the support block 2 is a fan ring, the junction of an end face of the sealing ring body 1 and its inner circumferential surface is provided with an annular groove, The support blocks 2 are evenly distributed in the annular groove, and the body of the support block 2 is provided with pins, which connect the support blocks 2 and the sealing ring body 1 together. The steel pipe sealing skirt 3 extending obliquely to the sealing surface of the steel pipe, the sealing ring body 1 is provided with the junction of the end face of the support block 2 and the outer circumferential surface, and the end face sealing skirt 4 extending obliquely away from the end face is provided;

[0050] On the end face of the sealing ring body 1 where the steel pipe sealing skirt 3 is provided, a ring of supporting grooves 8 is arranged, and the bottom of the supporting groove 8 is in the s...

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Abstract

The invention discloses a steel tube end seal ring and a sealing device, and belongs to the technical field of sealing equipment. The steel tube end seal ring comprises a seal ring body and a supporting block arranged in an annular groove, and a steel tube seal peripheral edge and an end face seal peripheral edge are arranged on the end face of the seal ring body; an arc-shaped supporting groove is formed in the end face of one side of the seal ring body; a convex ring provided with a through groove is arranged on the outer circumferential face of the seal ring body. The sealing device comprises a sealing head and a locating sleeve which are mutually matched, and the steel tube end seal ring is arranged in the sealing device. A supporting ring of the locating sleeve is arranged in a supporting groove of the sealing head in a jacking mode and a gap is reserved. The steel tube end seal ring and the sealing device have the advantages that the pre-sealing link is omitted, the efficiency is improved, and cost is saved; the problem that the seal ring droops is solved, so that a pressure testing head can be designed smaller, and therefore a high-pressure test can be conducted on steel tubes with the diameter phi being larger than six hundred and thirty millimeters; the gap between the supporting groove and the supporting ring guarantees the effect that the seal ring body can be moved in place during pressure exertion, and after pressure is removed, the seal ring body can recover the original shape.

Description

technical field [0001] The invention belongs to the technical field of sealing equipment, and particularly relates to a steel pipe end sealing ring and a sealing device. Background technique [0002] In the hydraulic test of steel pipe, it is necessary to pass pressure liquid into the pipe, and sealing the pipe end is an indispensable link; the radial sealing method is convenient to set up, and the test pressure can be higher, and it is widely used in the industry. The currently used radial sealing methods have a "pre-sealing" link, which is used as follows: the sealing ring with the support block is installed on the pressure test head, the end of the pipe to be tested is inserted into the inner ring of the sealing ring, and the pressure medium enters the sealing ring The sealing cavity of the outer ring is tightly combined with the outer surface of the steel pipe, so as to achieve the sealing effect. Then the system injects water into the steel pipe. After the water injecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/06
Inventor 王中华
Owner QINGDAO ZHONGRUITAI MESNAC TECH CO LTD
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