Port structure of composite steel pipe

Abstract

The utility model discloses a port structure of a composite steel pipe, which comprises a steel pipe, and the inner wall of the steel pipe extends towards the central position to form a flange; the fixing ring comprises a fixing outer ring and fixing inner rings arranged in the fixing outer ring at intervals, the top end face of the fixing outer ring and the top end face of the fixing inner ring are integrally connected in a horizontal plane mode, and a fixing groove used for being arranged at the end opening of the steel pipe in a sleeving mode is formed between the fixing outer ring and the fixing inner ring. The outer fixing ring is attached to the outer wall of the steel pipe, a gap is formed between the inner fixing ring and the inner wall of the steel pipe, a sealing ring with the same size as the gap is arranged at the gap, and a gap is formed between the inner fixing ring and the flange. And when the sealing ring is fixed, the situation that the fixed inner ring is stressed to tilt due to overlong length can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to port structure technical field, especially relate to a port structure of composite steel pipe. BACKGROUND

[0002] Liquid delivery technology is widely used in industrial production, daily life, scientific research field and the like, long-distance delivery liquid material is mostly transported by using steel pipe as pipeline delivery mode, pipeline transportation can significantly reduce transportation cost and time, but liquid is mostly specific corrosive to steel pipe, so composite metal steel pipe is made and used, but long-distance transportation needs to use too long composite steel pipe, cannot reach long-distance transportation by single composite steel pipe, so people make a large number of standard size composite steel pipes and connect adjacent composite steel pipes to reach enough length pipeline to transport liquid, and the port position between composite steel pipes is fixed groove and is connected to the port to prevent liquid from directly contacting the end face of composite steel pipe to corrode composite steel pipe.

[0003] For example, the utility model patent with the patent number "CN216430778U" named "a pipe end sleeve for pipe butt joint" discloses a pipe end sleeve for pipe butt joint and a pipeline. The end of the pipeline is provided with the pipe end sleeve. The pipe end sleeve is an integrated structure composed of an inner support body, an outer sleeve body and an end sealing disc. The inner support body and the outer sleeve body are both circular bodies and are coaxially arranged. The end portions of the inner support body and the outer sleeve body are connected through the end sealing disc, so that a pipeline groove is formed between the inner support body and the outer sleeve body. The pipe body is inserted into the pipeline groove, so that the inner support body is attached to the inner surface of the pipe body, the outer sleeve body is attached to the outer surface of the pipe body, and the end face of the pipe body is in abutment with the end sealing disc. The inner support body is provided with a sealing groove. A sealing ring is arranged in the sealing groove. The pipe body is provided with a clamping groove, and the inner side of the clamping groove is provided with an inner protrusion. The inner protrusion is clamped into the sealing groove. The inner support body of the above-mentioned patent extends too long in the inner surface of the pipe body. When the sealing ring of the pipe end sleeve is pressed onto the pipeline, the end portion of the inner support body is lifted when the long inner support body is extruded, so that water enters the gap between the pipeline and the pipe end sleeve.

[0004] Based on the above reasons, it is necessary to improve the existing technology. UTILITY MODEL CONTENTS

[0005] I. Technical problems to be solved

[0006] The utility model is directed to the above-mentioned defects existing in the prior art, and a port structure of composite steel pipe is provided to solve the problems in the above background technology.

[0007] II. Technical scheme

[0008] To solve the above-mentioned technical problems, the utility model provides a port structure of composite steel pipe, which comprises a steel pipe, and a flange is formed by extending the inner wall of the steel pipe to the center position.

[0009] The fixed ring comprises a fixed outer ring and a fixed inner ring which is arranged in the fixed outer ring, the top end faces of the fixed outer ring and the fixed inner ring are integrally connected in a horizontal plane, a fixed groove for sleeving the steel pipe port is formed between the fixed outer ring and the fixed inner ring, the fixed outer ring is attached to the outer wall of the steel pipe, the fixed inner ring is spaced apart from the inner wall of the steel pipe, a sealing ring with the same size as the gap is arranged at the gap, and a gap is arranged between the fixed inner ring and the flange.

[0010] In the technical scheme, the fixed ring is made of stainless steel.

[0011] In the technical scheme, the thickness of the flange is equal to the thickness of the sealing ring.

[0012] In the technical scheme, a clamping groove is concavely arranged on the outer wall of the steel pipe, and the position of the clamping groove corresponds to the position of the flange.

[0013] III. Advantages

[0014] Compared with the prior art, the utility model has the beneficial effects that: the utility model shortens the extension length of the fixed inner ring, reduces the production cost, and prevents the fixed inner ring from being forced to rise when the sealing ring is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model relates to a cross section structure schematic diagram.

[0016] In the drawing: 1 is a steel pipe, 10 is a limiting flange, 11 is a clamping groove, 2 is a fixed ring, 20 is a fixed outer ring, 21 is a fixed inner ring, 22 is a fixed groove, and 23 is a sealing ring. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model will be further described in detail in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0018] Please refer to Figure 1 The utility model provides a kind of port structure of composite steel pipe, including steel pipe 1, the inner wall of the steel pipe 1 extends to center position and forms flange 10;

[0019] The fixed ring 2 comprises a fixed outer ring 20 and a fixed inner ring 21 which is arranged in the fixed outer ring 20, the top end faces of the fixed outer ring 20 and the fixed inner ring 21 are integrally connected in a horizontal plane, the fixed outer ring 20 and the fixed inner ring 21 form a fixed groove 22 for sleeving the port of the steel pipe 1, the fixed outer ring 20 is attached to the outer wall of the steel pipe 1, the fixed inner ring 21 has a gap with the inner wall of the steel pipe 1, the gap is provided with a sealing ring 23 which has the same size as the gap, and the fixed inner ring 21 has a gap with the flange 10.

[0020] In the above structure, the fixed ring is sleeved on the port of the steel pipe through the fixed groove, the inner wall of the fixed outer ring is attached to the outer wall of the steel pipe, the fixed inner ring extends to the flange position with a gap, the inner wall of the fixed inner ring and the inner wall of the steel pipe do not attach to form a gap, and the gap is provided with a sealing ring which has the same size as the gap, when the operator needs to fix the fixed ring on the port of the steel pipe, the fixed inner ring is extruded, and the sealing ring is extruded synchronously, so as to ensure that the fixed inner ring and the sealing ring are synchronously extruded on the port of the steel pipe, and the fixed inner ring which is not extruded to the flange can reduce the cost of producing the fixed ring and prevent the fixed inner ring from being extruded and being too long to cause the bottom end to be raised to form a water-inletting interlayer.

[0021] Specifically, the fixed ring 2 is made of stainless steel, which can effectively prevent the fixed ring from being corroded and polluted by the liquid in the steel pipe, and prevent the liquid from leaking out after the fixed ring is corroded.

[0022] Specifically, the thickness of the flange 10 is equal to the thickness of the sealing ring 23, and the flange can help the sealing ring and the fixed ring to block the direct impact of the fluid in the steel pipe, thereby reducing the pressure of the fluid on the sealing ring and the fixed ring.

[0023] Specifically, the steel pipe 1 is provided with a clamping groove 11 on the outer wall, and the clamping groove 11 is located in correspondence with the flange 10.

[0024] The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be regarded as the protection range of the present application.

Claims

1. A port structure of a composite steel pipe, characterized by, The utility model relates to a kind of composite steel pipe's port structure, including: Steel pipe (1), the inner wall of the steel pipe (1) extends to the flange (10) of central position;Fixed ring (2), the fixed ring (2) includes fixed outer ring (20) and interval setting in the fixed inner ring (21) of the fixed outer ring (20), the fixed outer ring (20) and the fixed inner ring (21) top end face is integral connection with horizontal plane, the fixed outer ring (20) and the fixed inner ring (21) between formation fixed groove (22) for the sleeve set steel pipe (1) port, the fixed outer ring (20) is attached to the outer wall of the steel pipe (1), the fixed inner ring (21) and the inner wall of the steel pipe (1) form gap, the gap is provided with sealing ring (23) with the same size gap, the fixed inner ring (21) and the flange (10) between interval have interstice.

2. The utility model as claimed in claim 1, wherein: The fixed ring (2) is made of stainless steel.

3. The utility model as claimed in claim 1, wherein: The thickness of the flange (10) is equal to the thickness of the sealing ring (23).

4. The utility model as claimed in claim 1, wherein: The outer wall of the steel pipe (1) is concavely provided with a clamping groove (11), and the clamping groove (11) is located corresponding to the flange (10).

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