Anti-channeling water pipe fitting, composite pipe and pipe fitting

Abstract

The utility model discloses an anti-channeling water pipe fitting, a composite pipe and a pipe fitting, belongs to the technical field of composite pipes, is used for sealing the edge of a composite pipe, and comprises a pipe fitting body, a first outer wall layer, a second outer wall layer and a sealing layer, and the first outer wall layer and the second outer wall layer are sequentially fixed to the outer wall of one end of the pipe fitting body from inside to outside; the length of the first outer wall layer and the second outer wall layer is smaller than that of the pipe fitting body, the sum of the thicknesses of the first outer wall layer and the second outer wall layer is equal to the thickness of the composite pipe, and the sealing layer is located between the end of the composite pipe and the second outer wall layer. Fluid in the composite pipe is effectively blocked, so that water seepage at the end part of the composite pipe is avoided; meanwhile, rainwater and dew can be prevented from entering the attaching face of the composite pipe and the second outer wall layer, and bulging and cracking of the composite pipe are avoided; three end faces of the composite pipe are wrapped, no water or air is leaked, and the sealing effect is improved.

Description

Technical Field

[0001] The present application relates to the field of composite pipes, and in particular to a water-proof pipe fitting, a composite pipe, and a pipe fitting. Background Art

[0002] Pressure-bearing composite pipes are a new type of pipes with high strength and excellent corrosion resistance, mainly including multi-layer structures. However, the ends of composite pipes cannot be completely integrated, resulting in the internal fluid penetrating between the multiple layers after connection, causing bulging and rupture of the composite pipes, which seriously affects the quality of the pipes. At present, the end treatment of composite pipes mostly adopts edge sealing rings, but the edge sealing quality is unstable and the effect is poor. Summary of the invention

[0003] The main purpose of the present application is to provide a water-proof pipe fitting, aiming to solve the technical problem of poor edge sealing effect of existing edge sealing rings.

[0004] To achieve the above-mentioned purpose, the present application provides a water-proof pipe fitting for sealing the edge of a composite pipe, comprising a pipe fitting body, a first outer wall layer, a second outer wall layer, and a sealing layer; the first outer wall layer and the second outer wall layer are fixed on the outer wall of one end of the pipe fitting body in sequence from the inside to the outside, the length of the first outer wall layer and the second outer wall layer is less than the length of the pipe fitting body, the sum of the thickness of the first outer wall layer and the second outer wall layer is equal to the thickness of the composite pipe, and the sealing layer is located between the end of the composite pipe and the second outer wall layer.

[0005] Optionally, the sealing layer includes a flexible sealing member; the length of the flexible sealing member is greater than or equal to the distance between the end of the composite pipe and the second outer wall layer.

[0006] Optionally, the lengths of the first outer wall layer and the second outer wall layer are the same, and the thickness of the flexible seal is equal to the sum of the thicknesses of the first outer wall layer and the second outer wall layer.

[0007] Optionally, the length of the second outer wall layer is smaller than that of the first outer wall layer, and the length of the flexible seal is equal to the difference between the lengths of the second outer wall layer and the first outer wall layer.

[0008] Optionally, the cross-sectional shape of the flexible sealing element is circular or quadrilateral.

[0009] Optionally, the sealing layer comprises a rigid seal;

[0010] The length of the rigid seal is equal to the distance between the end of the composite pipe and the second outer wall layer.

[0011] Optionally, the second outer wall layer and the end of the composite pipe form a groove, and the sealing layer is filled in the groove.

[0012] Optionally, the groove is in the shape of a right triangle, a sector or a quadrilateral.

[0013] In addition, to achieve the above-mentioned purpose, the present application also provides a composite pipe, including: a composite pipe, the above-mentioned anti-water leakage pipe fitting; wherein, the composite pipe includes an outer plastic layer, a reinforcement layer, and an inner plastic layer which are sequentially sleeved from the outside to the inside, and the inner plastic layer is sleeved on the outer wall of the pipe fitting body.

[0014] In addition, to achieve the above purpose, the present application also provides a pipe fitting, including: an electric fusion pipe fitting; two of the above-mentioned composite pipes; wherein the electric fusion pipe fitting is sleeved on the outer wall of the connection between the two composite pipes.

[0015] The embodiments of the present application propose an anti-water leakage pipe fitting, composite pipe and pipe fitting, which form an edge seal with the pipe fitting body through the first outer wall layer, and further fill the gap between the edge seal and the end of the composite pipe through the sealing layer, so that the end face of the composite pipe is covered on three sides; the aforementioned edge seal or sealing layer forms an effective barrier to the internal fluid of the composite pipe, thereby preventing water seepage from the end of the composite pipe; at the same time, the sealing layer can seal the outer end face of the composite pipe, and for the composite pipe placed outdoors, it can prevent rainwater and dew from entering the fitting surface between the composite pipe and the second outer wall layer, thereby preventing the composite pipe from bulging or rupture; the end face of the composite pipe is covered on three sides, there is no water leakage, and the sealing effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an embodiment of a water channeling prevention pipe fitting of the present application;

[0017] Figure 2 This is a structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application;

[0018] Figure 3 This is a structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application;

[0019] Figure 4 This is a partial structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application;

[0020] Figure 5 This is a partial structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application;

[0021] Figure 6 This is a structural schematic diagram of an embodiment of a composite pipe of the present application;

[0022] Figure 7 This is a structural schematic diagram of an embodiment of a pipe fitting of the present application;

[0023] Figure 8 This is a structural schematic diagram of another embodiment of a pipe fitting of the present application;

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The first embodiment of the present application provides a water channeling prevention pipe fitting, Figure 1 This application discloses a water-proof pipe fitting, such as Figure 1As shown, it is used to seal the edge of the composite pipe 1, and the anti-water leakage pipe fitting includes a pipe body 2, a first outer wall layer 3, a second outer wall layer 4, and a sealing layer 5. The outer wall of one end of the pipe body 2 is connected to the first outer wall layer 3 and the second outer wall layer 4 in sequence from the inside to the outside. The length of the first outer wall layer 3 and the second outer wall layer 4 is less than the length of the pipe body 2. The sum of the thickness of the first outer wall layer 3 and the second outer wall layer 4 is equal to the thickness of the composite pipe 1. The sealing layer 5 is located between the end of the composite pipe 1 and the second outer wall layer 4.

[0030] It should be noted that the length mentioned in this embodiment refers to the length of the pipe body 2 in the longitudinal direction.

[0031] In this embodiment, the pipe body 2 serves as the innermost sealing component, which is in close contact with the inner wall of the composite pipe 1. The first outer wall layer 3 and the second outer wall layer 4 are fixedly connected to the outer wall of the pipe body 2. The length of the pipe body 2 is greater than the length of the first outer wall layer 3 and the second outer wall layer 4. The lengths of the first outer wall layer 3 and the second outer wall layer 4 can be the same, or the length of the first outer wall layer 3 can be greater than the length of the second outer wall layer 4, at least ensuring that the first outer wall layer 3 and the pipe body 2 form the most basic edge seal; the edge seal is formed by the first outer wall layer 3 and the pipe body 2, and the gap between the edge seal and the end of the composite pipe 1 is further filled by the sealing layer 5, so that the end face of the composite pipe 1 is coated on three sides. For example, when the first outer wall layer 3 is longer than the second outer wall layer 4, the aforementioned edge sealing forms an effective barrier to the internal fluid of the composite pipe 1, thereby avoiding water seepage at the end of the composite pipe, and the sealing layer 5 can seal the outer end face of the composite pipe 1; when the first outer wall layer 3 is equal to the length of the second outer wall layer 4, the aforementioned edge sealing and the sealing layer 5 together form an effective barrier to the internal fluid of the composite pipe 1, thereby avoiding water seepage at the end of the composite pipe; at the same time, the sealing layer 5 can seal the outer end face of the composite pipe 1. For the composite pipe 1 placed outdoors, rainwater and dew can be prevented from entering the fitting surface between the composite pipe 1 and the second outer wall layer 4, thereby avoiding bulging and rupture of the composite pipe; the end face of the composite pipe is coated on three sides, there is no water seepage, and the sealing effect is improved.

[0032] In some exemplary embodiments, the sealing layer 5 may include a flexible seal, the length of which is greater than or equal to the distance between the end of the composite pipe 1 and the second outer wall layer 4. The first outer wall layer 3 and the second outer wall layer 4 have the same length, and the thickness of the flexible seal is equal to the sum of the thickness of the first outer wall layer 3 and the second outer wall layer 4.

[0033] Among them, the first outer wall layer 3 and the second outer wall layer 4 are integrated into an outer wall fixed at one end of the pipe body 2, and the lengths of the two are the same. At this time, the sealing layer 5 is located between the two and the end of the composite pipe, and the cross-sectional shape of the sealing layer 5 can be rectangular. For example, the sealing layer 5 can be a rubber pad. The sealing layer 5 and the pipe body 2 form an L-shaped edge seal, which covers the end face of the composite pipe 1 on three sides. The edge seal can effectively block the fluid inside the composite pipe 1, thereby avoiding bulging and rupture of the composite pipe caused by water seepage at the end of the composite pipe. At the same time, it can seal the outer end face of the composite pipe 1. For the composite pipe 1 placed outdoors, it can prevent rainwater and dew from entering the fitting surface of the composite pipe 1 and the second outer wall layer 4.

[0034] It is worth noting that in the embodiment of the present application, the length mentioned refers to the length along the length direction of the pipe body 2.

[0035] Furthermore, the length of the flexible seal can be equal to the distance between the end of the composite pipe 1 and the second outer wall layer 4, or can be greater than the distance between the end of the composite pipe 1 and the second outer wall layer 4. Since the flexible seal has a certain elasticity, when the composite pipe 1 contacts the flexible seal, the composite pipe 1 compresses the flexible seal to a certain extent, thereby further ensuring the sealing performance.

[0036] In some exemplary embodiments, Figure 2 This is a structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application, such as Figure 2 As shown, the sealing layer 5 includes a flexible seal, the length of which is greater than or equal to the distance between the end of the composite pipe 1 and the second outer wall layer 4. The length of the second outer wall layer 4 is less than the length of the first outer wall layer 3, the length of the flexible seal is equal to the length difference between the second outer wall layer 4 and the first outer wall layer 3, and the thickness of the flexible seal is greater than the thickness of the outermost layer of the composite pipe 1.

[0037] In this embodiment, the second outer wall layer 4 forms a step with the first outer wall layer 3, the sealing layer 5 is located at the step, and the cross-sectional shape of the flexible seal can be circular or quadrilateral. If the cross-sectional shape of the flexible seal is circular, the diameter of the flexible seal is greater than or equal to the distance between the end of the composite pipe 1 and the second outer wall layer 4; at this time, the flexible seal can be an O-ring, and if the cross-sectional shape of the flexible seal is a quadrilateral, the flexible seal can be a rubber pad. The first outer wall layer 3 and the pipe body 2 form an effective barrier to the internal fluid of the composite pipe 1, thereby avoiding bulging and rupture of the composite pipe caused by water seepage at the end of the composite pipe; the thickness of the flexible seal is greater than the thickness of the outermost layer of the composite pipe 1, and the outer end face of the composite pipe 1 is better sealed by the flexible seal. For the composite pipe 1 placed outdoors, rainwater and dew can be prevented from entering the fitting surface between the composite pipe 1 and the second outer wall layer 4.

[0038] In the above embodiment, during installation, the flexible seal is first directly installed on the pipe body 2, and then the installed anti-water leakage pipe is inserted into the composite pipe 1, so that the end of the composite pipe 1 is in close contact with the flexible seal to form a sealed edge for the composite pipe 1.

[0039] It is worth noting that in the embodiment of the present application, the cross-section of a certain structure A is in the shape of B, which means that the structure A is cut open along the length direction of the pipe body 2 to obtain the shape of the structure.

[0040] In some exemplary embodiments, Figure 3 This is a structural schematic diagram of another embodiment of a water channeling prevention pipe fitting of the present application, such as Figure 3 As shown, the sealing layer 5 may include a rigid sealing member, the length of which is equal to the distance between the end of the composite pipe 1 and the second outer wall layer 4. The second outer wall layer 4 and the end of the composite pipe form a groove 6, and the sealing layer 5 is filled in the groove 6. The length of the outer edge of the groove 6 is equal to the depth of the groove 6. The shape of the groove 6 can be a right triangle, a sector or a quadrilateral.

[0041] It should be noted that, in this embodiment, the distance mentioned refers to the distance along the length direction of the composite pipe.

[0042] Compared with the first outer wall layer 3, the second outer wall layer 4 forms a notch in the direction close to the other end of the pipe body (2), that is, a groove 6 is formed between the end of the composite pipe 1 and the second outer wall layer 4, and the sealing layer 5 is filled in the groove 6. The sealing layer 5 of a suitable size can be filled according to the size of the groove 6 to ensure the sealing performance. Figure 4-5 As shown, during installation, the anti-water-channeling pipe fitting is first connected to the end of the composite pipe to form a groove 6, and then the sealing layer 5 is filled into the groove 6. The filling method of the sealing layer 5 includes but is not limited to extrusion injection molding filling, hot-melt welding rod filling, adhesive filling, etc. The sealing layer 5 can prevent rainwater and dew from entering the fitting surface of the composite pipe 1 and the second outer wall layer 4, thereby improving the sealing performance. Exemplarily, the length of the outer edge of the groove 6 and the depth of the groove 6 can be greater than or equal to 2 mm. If the size of the groove 6 is too small, it is not convenient for construction, and the secondary filling effect is also poor.

[0043] Based on the above embodiments, Figure 6 This is a schematic diagram of the structure of a composite pipe in this application, such as Figure 6 As shown, the second embodiment of the present application provides a composite pipe, including a composite pipe 1 and the anti-water leakage pipe fittings described in any of the above embodiments. The composite pipe 1 may include an outer plastic layer 11, a reinforcement layer 12, and an inner plastic layer 13 that are sleeved from the outside to the inside. The pipe body 2 is sleeved in the inner plastic layer 13, and the thickness of the sealing layer 5 is greater than or equal to the thickness of the outer plastic layer 11.

[0044] In this embodiment, the edge sealing or sealing layer 5 formed by the first outer wall layer 3 and the pipe body 2 forms an effective barrier to the internal fluid of the composite pipe 1, thereby preventing the internal fluid of the composite pipe 1 from seeping into the interlayers of the outer plastic layer 11, the reinforcement layer 12 and the inner plastic layer 13, causing bulging and rupture of the composite pipe; at the same time, the sealing layer 5 can seal the outer end face of the composite pipe 1. For the composite pipe 1 placed outdoors, it can prevent rainwater and dew from entering the fitting surface between the composite pipe 1 and the second outer wall layer 4, and then entering the outer plastic layer 11 and the reinforcement layer 12, thereby ensuring that the welding connection quality of the electric fusion pipe fitting 7 is stable after welding without air holes; the end face of the composite pipe is coated on three sides, and there is no risk of water leakage.

[0045] Furthermore, the sealing layer 5 includes a flexible sealing member, and the thickness of the sealing layer 5 is greater than or equal to the thickness of the outermost layer, that is, the thickness of the outer plastic layer 11, which can ensure that rainwater and dew outside the sealing layer 5 enter between the outer plastic layer 11 and the reinforcing layer 12, thereby avoiding bulging and the like in the composite pipe.

[0046] In some exemplary embodiments, the material of the outer plastic layer 11 may include PE, PP or PVC, which can provide excellent anti-corrosion performance; the material of the reinforcement layer 12 may include a steel wire skeleton layer, a metal steel belt layer, a fiber braided layer, etc., to strengthen the overall strength of the pipe and ensure the pressure bearing capacity; the material of the inner plastic layer 13 may include PE, PP or PVC to ensure the hygiene of the conveyed fluid and prevent the internal fluid from corroding the reinforcement layer. In this embodiment, the inner plastic layer 13 is sleeved on the outer wall of the pipe body 2, and the sleeve connection method may include hot-melt socket and electric-melt socket.

[0047] Based on the above embodiments, Figure 7 This is a schematic diagram of the structure of a pipe fitting for this application. Figure 8 This is a schematic diagram of the structure of another pipe fitting in this application, such as Figure 7 and Figure 8 As shown, in the embodiment of the present application, the pipe fitting may include an electric fusion pipe fitting 7 and two composite pipes described in any of the above embodiments, and the electric fusion pipe fitting 7 is sleeved on the outer wall of the connection between the two composite pipes.

[0048] In this embodiment, the sealing layer 5 can seal the outer end face of the composite pipe 1. For the composite pipe 1 placed outdoors, it can prevent rainwater and dew from entering the fitting surface between the composite pipe 1 and the second outer wall layer 4, thereby ensuring that the welding connection quality of the electric fusion pipe fitting 7 is stable and free of pores after welding.

[0049] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A water leakage prevention pipe fitting, used for edge sealing of a composite pipe (1), characterized in that: It comprises a pipe body (2), a first outer wall layer (3), a second outer wall layer (4), and a sealing layer (5); The first outer wall layer (3) and the second outer wall layer (4) are fixed to the outer wall of one end of the pipe body (2) in sequence from the inside to the outside; the length of the first outer wall layer (3) and the second outer wall layer (4) are less than the length of the pipe body (2); the sum of the thickness of the first outer wall layer (3) and the second outer wall layer (4) is equal to the thickness of the composite pipe (1); and the sealing layer (5) is located between the end of the composite pipe (1) and the second outer wall layer (4).

2. The anti-water channeling pipe fitting according to claim 1, characterized in that: The sealing layer (5) comprises a flexible sealing member; The length of the flexible sealing member is greater than or equal to the distance between the end of the composite pipe (1) and the second outer wall layer (4).

3. The anti-water channeling pipe fitting according to claim 2, characterized in that: The length of the first outer wall layer (3) is the same as that of the second outer wall layer (4), and the thickness of the flexible sealing member is equal to the sum of the thickness of the first outer wall layer (3) and the second outer wall layer (4).

4. The anti-water channeling pipe fitting according to claim 2, characterized in that: The length of the second outer wall layer (4) is smaller than that of the first outer wall layer (3), and the length of the flexible seal is equal to the difference between the lengths of the second outer wall layer (4) and the first outer wall layer (3).

5. The anti-water channeling pipe fitting according to claim 4, characterized in that: The cross-sectional shape of the flexible sealing member is circular or quadrilateral.

6. The anti-water channeling pipe fitting according to claim 1, characterized in that: The sealing layer (5) comprises a rigid sealing member; The length of the rigid seal is equal to the distance between the end of the composite pipe (1) and the second outer wall layer (4).

7. The anti-water channeling pipe fitting according to claim 6, characterized in that: The second outer wall layer (4) and the end of the composite pipe (1) form a groove (6), and the sealing layer (5) is filled in the groove (6).

8. The anti-water channeling pipe fitting according to claim 7, characterized in that: The groove (6) is in the shape of a right triangle, a sector or a quadrilateral.

9. A composite pipe, characterized in that: include: Composite pipe (1); The anti-water channeling pipe fitting according to any one of claims 1 to 8; The composite pipe (1) comprises an outer plastic layer (11), a reinforcement layer (12), and an inner plastic layer (13) which are sleeved in sequence from the outside to the inside, and the inner plastic layer (13) is sleeved on the outer wall of the pipe body (2).

10. A pipe fitting, characterized in that: include: Electrofusion pipe fittings (7); The composite pipe according to claim 9; Wherein, the electric fusion pipe fitting (7) is sleeved on the outer wall of the connection point of the two composite pipes.

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