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Steel tube end seal ring and sealing device

An end sealing and sealing ring technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of increasing the size of the pressure test head and difficult sealing methods, so as to improve efficiency, save costs and save working time. Effect

Active Publication Date: 2014-05-14
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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  • Steel tube end seal ring and sealing device
  • Steel tube end seal ring and sealing device
  • Steel tube end seal ring and sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 1 , 2 , 3, shown in 3a, a steel pipe end sealing ring, including a sealing ring body 1, a support block 2, the support block 2 is fan-shaped, and an annular groove is arranged at the junction of an end surface of the sealing ring body 1 and its inner peripheral surface The support block 2 is evenly distributed in the annular groove, the support block 2 body is provided with pins, and the pin connects the support block 2 and the sealing ring body 1 together, and the end surface of the sealing ring body 1 without the support block 2 is provided with a distance The end face is a steel pipe sealing skirt 3 that extends obliquely toward the steel pipe sealing surface. The sealing ring body 1 is provided with a junction between the end face of the support block 2 and its outer circumferential surface, and an end face sealing skirt 4 that extends obliquely away from the end face;

[0050] The angle α between the edge of the steel pipe sealing skirt 3 to be sealed ...

Embodiment 2

[0052] like Figure 4 , 4a , 4b, set the steel pipe under test (that is, the pressure test tube 9) to be inserted from left to right. The sealing device using the steel pipe end sealing ring of Embodiment 1 includes a steel pipe end sealing ring, a sealing head 5, and a positioning sleeve 6, and the positioning sleeve 6 cooperates with the sealing head 5; grooves are arranged in the inner cavity of the sealing head 5 51. The sealing ring at the end of the steel pipe is placed on the left part of the groove 51 (the pressure test tube is inserted from left to right). The outer edge of the skirt 4 is in close contact with the inner surface of the peripheral wall of the groove 51;

[0053] The left part of the positioning sleeve 6 is provided with a limiting ring 61; the right part of the positioning sleeve 6 is matched with the sealing head 5, that is, the right part of the positioning sleeve 6 is tightly fastened with the right part of the groove 51; The bit ring 61 is set on...

Embodiment 3

[0056] 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, an end surface of the sealing ring body 1 and the junction of its inner peripheral surface, an annular groove is set, The support block 2 is evenly distributed in the annular groove, and the support block 2 body is provided with pins, which connect the support block 2 and the seal ring body 1 together, and the end face of the seal ring body 1 without the support block 2 is provided with a A steel pipe sealing skirt 3 extending obliquely toward the steel pipe sealing surface, the sealing ring body 1 is provided with a junction between the end face of the support block 2 and the outer circumferential surface, and an end face sealing skirt 4 extending obliquely away from the end face is provided;

[0057] On the side end surface of the sealing ring body 1 provided with the steel pipe sealing skirt 3, a circle of supporting grooves 8...

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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 in particular relates to a steel pipe end sealing ring and a sealing device. Background technique [0002] When performing a hydraulic test on a steel pipe, it is necessary to inject pressure liquid into the pipe, and sealing the pipe end is an essential link; the radial sealing method is easy to set, and the test pressure that can be achieved is high, and it is widely used in the industry. The currently used radial sealing method has a "pre-sealing" link, which is used as follows: the sealing ring with a support block is installed on the test pressure head, the end of the tube to be tested is inserted into the inner ring of the sealing ring, and the pressure medium enters the sealing ring The sealing chamber of the outer ring makes it tightly combined with the outer surface of the steel pipe to achieve a sealing effect. Then the system injects water into the steel pipe. After the ...

Claims

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Application Information

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