Composite pipe end sealing steel sleeve

Abstract

The utility model relates to a composite pipe end sealing steel sleeve, which comprises two steel sleeves, a first sealing ring, two composite pipes, a second sealing ring and a third sealing ring, a groove is formed on each steel sleeve, a flange is formed at one end of each steel sleeve, and the section of the flange is L-shaped; the first sealing ring is arranged on the turned-over edges of the two steel sleeves in a sleeving mode. The composite pipes and the steel sleeves are sleeved on the steel sleeves in a one-to-one correspondence manner, and the convex rings of the composite pipes directly face the grooves; the second sealing ring is arranged between the turned-over edge and the composite pipe; and the third sealing ring is arranged between the groove and the convex ring. According to the composite pipe sealing device, the flange is matched with the second sealing ring, so that one end with a section of the composite pipe can be sealed. Therefore, external water is prevented from seeping into gaps of the composite pipe, and the composite pipe is prevented from being corroded.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection devices, in particular to a composite pipe end sealing steel sleeve. Background Art

[0002] A clamp is a connection device that connects grooved pipes, valves and pipeline accessories, and is used to tighten quick connectors.

[0003] Stainless steel composite pipe is a new material made of stainless steel and carbon structural steel by non-destructive pressure synchronous compounding. It has the corrosion resistance, wear resistance and excellent appearance of stainless steel, as well as the good bending strength and impact resistance of carbon steel.

[0004] At present, two stainless steel composite pipes are often connected by ordinary annular clamps. Although the annular clamp can ensure a good sealing effect and effectively prevent water leakage, the annular clamp cannot effectively prevent water (such as rainwater, etc.) from flowing from the gap between the composite pipe and the annular clamp to the end of the composite pipe, resulting in water easily infiltrating into the gap between the stainless steel pipe and the carbon steel pipe, thereby causing the stainless steel pipe and the carbon steel pipe to be corroded. Utility Model Content

[0005] Based on the above description, the utility model provides a composite pipe end sealing steel sleeve, which aims to solve the problem that the existing clamp cannot prevent water from flowing from the gap between the composite pipe and the annular clamp to the end of the composite pipe.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A composite pipe end sealing steel sleeve, comprising:

[0008] Two steel sleeves, each of which is formed with a groove, and each of which is formed with a flange at one end, and the cross section of the flange is L-shaped;

[0009] A first sealing ring, wherein the first sealing ring is sleeved on the flanges of the two steel sleeves;

[0010] Two composite pipes, each composite pipe is sleeved on the steel sleeve in one-to-one correspondence with the steel sleeve, and the convex ring of each composite pipe is directly opposite to the groove;

[0011] A second sealing ring, the second sealing ring being arranged between the flange and the composite tube;

[0012] A third sealing ring is arranged between the groove and the convex ring.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the steel sleeve is made of stainless steel.

[0015] Furthermore, the cross section of the first sealing ring is trapezoidal, and the inner wall of the first sealing ring has an annular groove.

[0016] Furthermore, the first sealing ring is made of silicone.

[0017] Furthermore, the second sealing ring and the third sealing ring are made of rubber.

[0018] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the present application can seal the end of the composite pipe with the cross section through the cooperation of the flange and the second sealing ring, thereby preventing external water from penetrating into the gap of the composite pipe and preventing the composite pipe from being corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a composite pipe end sealing steel sleeve provided in an embodiment of the utility model;

[0020] Figure 2 A cross-sectional view of a composite pipe end sealing steel sleeve provided in an embodiment of the utility model;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0022] Figure 4 This is a schematic diagram of the structure of the steel sleeve in the embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the composite tube in the embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the second sealing ring in the embodiment of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 10. Steel sleeve; 11. Flanged edge; 12. Groove; 20. First sealing ring; 21. Ring groove; 30. Composite pipe; 31. Protruding ring; 40. Second sealing ring; 50. Third sealing ring. DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0030] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0031] See attached Figures 1 to 6 As shown, the utility model provides a technical solution: a composite pipe end sealing steel sleeve, comprising two steel sleeves 10, a first sealing ring 20, two composite pipes 30, a second sealing ring 40 and a third sealing ring 50, each steel sleeve 10 is formed with a groove 11, and one end of each steel sleeve 10 is formed with a flange 12, and the cross-section of the flange 12 is L-shaped; the first sealing ring 20 is sleeved on the flanges 12 of the two steel sleeves 10; each composite pipe 30 is sleeved on the steel sleeve 10 in a one-to-one correspondence with the steel sleeve 10, and the convex ring 31 of each composite pipe 30 is opposite to the groove 11; the second sealing ring 40 is arranged between the flange 12 and the composite pipe 30; the third sealing ring 50 is arranged between the groove 11 and the convex ring 31.

[0032] According to this embodiment, the end of the composite pipe 30 with the cross section can be sealed by the cooperation of the flange 12 and the second sealing ring 40. This prevents external water from penetrating into the gap of the composite pipe 30 to prevent the composite pipe 30 from being corroded. The cooperation of the groove 11, the convex ring 31 and the third sealing ring 50 can not only strengthen the fastening effect of the composite pipe 30 and the steel sleeve 10 to prevent the composite pipe 30 and the steel sleeve 10 from being separated from each other, but also ensure the sealing effect of the composite pipe 30 and the steel sleeve 10 to prevent water from penetrating from the gap between the composite pipe 30 and the steel sleeve 10.

[0033] Preferably, the steel sleeve 10 is made of stainless steel; for example, 304 stainless steel, etc.

[0034] In one embodiment, the cross section of the first sealing ring 20 is trapezoidal, and the inner wall of the first sealing ring 20 has an annular groove 21 .

[0035] According to this embodiment, the hardness of the middle part of the first sealing ring 20 can be reduced, so that the first sealing ring 20 can be sleeved on the flange 12. That is, during the installation process, the first sealing ring 20 can be deformed, and the first sealing ring 20 can be expanded near the flange 12. After the installation is completed, the elastic force of the first sealing ring 20 can apply an extrusion force to the flange 12, thereby further strengthening the sealing effect on the end of the composite pipe 30 with the cross section, and preventing the liquid inside the composite pipe 30 from leaking.

[0036] Preferably, the first sealing ring 20 is made of silicone.

[0037] Preferably, the second sealing ring 40 and the third sealing ring 50 are made of rubber material. For example, the rubber material may be nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber or polyurethane rubber.

[0038] Optionally, the composite pipe 30 may be composed of a stainless steel pipe and a carbon steel pipe.

[0039] Specifically, the assembly steps of the composite pipe end sealing steel sleeve are as follows:

[0040] Step 1: Put the third sealing ring 50 into the groove 11.

[0041] Step 2: Put the second sealing ring 40 on the composite pipe 30 ; at the same time, put the composite pipe 30 on the steel sleeve 10 , and make the second sealing ring 40 be located between the flange 12 and the composite pipe 30 .

[0042] Step 3: Put the first sealing ring 20 on the flanges 12 of the two steel sleeves 10 to connect the two steel sleeves 10.

[0043] Step 4: Use processing equipment to extrude the flange 12 to deform it so that the flange 12 presses the second sealing ring 40 tightly.

[0044] Step 5: Process a convex ring 31 extending toward the groove 11 at a position of the composite pipe 30 facing the groove 11. After the convex ring 31 is formed, the convex ring 31 presses the third sealing ring 50 to prevent the steel sleeve 10 from falling out.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite pipe end sealing steel sleeve, characterized in that: include: Two steel sleeves (10), each of the steel sleeves (10) is formed with a groove (11), one end of each of the steel sleeves (10) is formed with a flange (12), and the cross-section of the flange (12) is L-shaped; A first sealing ring (20), the first sealing ring (20) being sleeved on the flanges (12) of the two steel sleeves (10); Two composite tubes (30), each composite tube (30) being sleeved on the steel sleeve (10) in a one-to-one correspondence with the steel sleeve (10), and the convex ring (31) of each composite tube (30) facing the groove (11); A second sealing ring (40), the second sealing ring (40) being arranged between the flange (12) and the composite tube (30); A third sealing ring (50), wherein the third sealing ring (50) is arranged between the groove (11) and the convex ring (31).

2. A composite pipe end sealing steel sleeve according to claim 1, characterized in that: The steel sleeve (10) is made of stainless steel.

3. The composite pipe end sealing steel sleeve according to claim 1, characterized in that: The cross section of the first sealing ring (20) is trapezoidal, and the inner wall of the first sealing ring (20) has an annular groove (21).

4. A composite pipe end sealing steel sleeve according to any one of claims 1 to 3, characterized in that: The first sealing ring (20) is made of silicone material.

5. A composite pipe end sealing steel sleeve according to any one of claims 1 to 3, characterized in that: The second sealing ring (40) and the third sealing ring (50) are made of rubber material.

Images