Novel TCP pipeline structure without joint connection

Abstract

The utility model discloses a novel TCP pipeline structure without joint connection. The novel TCP pipeline structure comprises an inner pipe, a reinforcing layer, an outer sheath, a reinforcing fiber band I, a reinforcing fiber band II, a reinforcing fiber band III and a thermoplastic protective sheet, the two sections of inner pipes are coaxially attached to each other left and right, a reinforcing layer is coaxially arranged on the outer surface of each inner pipe, and an outer sheath is coaxially arranged on the outer surface of each reinforcing layer; two ends of the reinforcing layer vertically extend out of the outer sheath, and two ends of the inner pipe vertically extend out of the reinforcing layer; a plurality of layers of reinforcing fiber bands I are spirally wound on the parts, extending out of the corresponding reinforcing layers, of the two inner pipes in the circumferential direction, and a plurality of layers of reinforcing fiber bands II arranged in the length direction of the inner pipes are evenly distributed on the outermost layer of reinforcing fiber band I in the circumferential direction in a hot melting fit mode; a plurality of layers of reinforced fiber belts III are spirally wound on the portions, extending out of the outer sheath, of the two reinforced layers in the circumferential direction, and a thermoplastic protective sheet is wound on the reinforced fiber belt III on the outermost layer. The adjacent TCP pipelines are connected in a butt joint mode under the condition that no joint exists.

Description

Technical Field

[0001] This utility model relates to the field of TCP pipe technology, specifically to a novel TCP pipe structure that does not require connectors. Background Technology

[0002] TCP pipes are high-performance pipes made of thermoplastic composite materials, mainly used in oil, natural gas, chemical, and marine engineering fields. TCP pipes typically consist of an inner tube, a reinforcing layer, and an outer sheath; wherein: 1) the inner tube is extruded from HDPE, PA12, or PVDF, providing excellent corrosion resistance and fluid transport efficiency; 2) the reinforcing layer is composed of fiber-reinforced materials (such as glass fiber or carbon fiber) and thermoplastic resin, providing high strength and external pressure resistance; 3) the outer sheath protects the reinforcing layer from environmental erosion and provides additional mechanical protection.

[0003] In practical applications, adjacent TCP pipe sections are typically connected together using connectors to meet length requirements. However, this connector method has several drawbacks: 1) TCP pipes come in various specifications, requiring different connector sizes to meet connection needs, which increases costs; 2) Commonly used connectors are straight-through, 45°, tee, or Y-type, necessitating that TCP pipes be laid out according to the connector type. Otherwise, adjacent TCP pipes cannot be connected using connectors, significantly increasing operational complexity; 3) When using connectors, the sealing performance after connection must be considered. Therefore, developing a TCP pipe that eliminates the need for connectors has become a pressing problem. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a novel TCP pipe structure that does not require joint connection. The ends of the inner pipe, the reinforcing layer and the outer sheath are arranged in a stepped shape, and then the layer-by-layer winding method is adopted to realize the butt connection of adjacent TCP pipes without joints. This avoids the problems of joint selection and sealing, and also eliminates the need to lay TCP pipes according to the joint type, which improves flexibility and saves costs.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a novel TCP pipe structure that does not require joint connection. Its innovation lies in: comprising an inner tube, a reinforcing layer, an outer sheath, reinforcing fiber tape I, reinforcing fiber tape II, reinforcing fiber tape III, and a thermoplastic protective sheet; two sections of the inner tube are coaxially aligned and fitted together, and a reinforcing layer is coaxially sleeved on the outer surface of each inner tube, and an outer sheath is coaxially sleeved on the outer surface of each reinforcing layer; both ends of each reinforcing layer extend vertically to corresponding end faces of the outer sheath, and both ends of each inner tube extend vertically to corresponding end faces of the outer sheath. The ends of the inner tube, the reinforcing layer, and the corresponding outer sheath are all stepped, corresponding to the end faces of the reinforcing layer. Several layers of reinforcing fiber tape I are spirally wound around the two inner tubes extending from the corresponding reinforcing layer in the circumferential direction. Several layers of reinforcing fiber tape II are evenly distributed and hot-melted on the outermost layer of reinforcing fiber tape I in the circumferential direction, and the outer surface of the reinforcing fiber tape II is flush with the outer surface of the corresponding reinforcing layer. Several layers of reinforcing fiber tape III are spirally wound around the two reinforcing layers extending from the corresponding outer sheath in the circumferential direction. A thermoplastic protective sheet is also wound around the outermost layer of reinforcing fiber tape III.

[0006] Preferably, the length of the corresponding outer sheath extending from both ends of each of the reinforcing layers is not less than 100 mm, and the stability of the reinforcing fiber tape III wrapped around the adjacent reinforcing layers must be ensured.

[0007] Preferably, the length of the corresponding reinforcing layer extending from both ends of each inner tube is not less than 200 mm, and the stability of the reinforcing fiber tape I wrapped around the adjacent inner tube must be ensured.

[0008] Preferably, the reinforcing fiber tape I, reinforcing fiber tape II, and reinforcing fiber tape III are all made of the same material as the reinforcing layer, and the spiral winding angle of each layer of reinforcing fiber tape I is 80° to 89°, and they are coaxially bonded to the corresponding inner tube by means of simultaneous winding and hot melting heating.

[0009] Preferably, the winding thickness of the reinforcing fiber tape I is half of the thickness of the reinforcing layer, and its winding coverage must ensure that the portion of the adjacent inner tube extending out of the reinforcing layer is covered within it.

[0010] Preferably, each adjacent reinforcing fiber strip II is tightly attached to each other along the circumferential direction, and the bonding coverage of each layer of reinforcing fiber strip II must ensure that the reinforcing fiber strip I is completely covered within it.

[0011] Preferably, the spiral winding angle of each layer of the reinforcing fiber tape III is 54° to 55°, and the winding is carried out by a clockwise and counterclockwise cross winding method layer by layer; the winding thickness of the reinforcing fiber tape III is 50% to 80% of the thickness of the corresponding outer sheath, and its winding coverage must ensure that the part of the adjacent reinforcing layer extending out of the outer sheath and the corresponding reinforcing fiber tape II are all covered within it.

[0012] Preferably, the thermoplastic protective sheet is coaxially bonded to the corresponding reinforcing fiber tape III by means of simultaneous winding and heating, and its coverage area must ensure that the reinforcing fiber tape III is completely covered within it, and its outer surface must be flush with the outer surface of the corresponding outer sheath.

[0013] Preferably, it also includes an outer steel pipe anti-bending device; an outer steel pipe anti-bending device is also coaxially sleeved on the thermoplastic protective sheet, and the two ends of the outer steel pipe anti-bending device are respectively coaxially sleeved on the corresponding ends of the outer sheath, thereby preventing connection point failure caused by bending or ultra-high voltage through the outer steel pipe anti-bending device.

[0014] The beneficial effects of this utility model are:

[0015] (1) The ends of the inner tube, reinforcing layer and outer sheath of this utility model are set in a stepped shape, and then the layer-by-layer winding method is adopted to realize the connection of adjacent TCP pipes without joints, thereby avoiding the problems of joint selection and sealing. At the same time, there is no need to lay TCP pipes according to the joint type, which improves flexibility and saves costs.

[0016] (2) The ends of the inner tube, reinforcing layer and outer sheath of this utility model are set in a stepped shape, so that when the layers are wound one by one, not only is the outer diameter of the TCP pipe not increased, but the connection is also secure and sealed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a novel TCP pipe structure that does not require connectors according to this utility model.

[0019] Figure 2 This is a schematic diagram of the hot-melt welding of adjacent inner tubes according to this utility model.

[0020] Figure 3 This is a schematic diagram of the process of winding the reinforcing fiber tape I according to this utility model.

[0021] Figure 4 This is a schematic diagram of the hot-melt reinforced fiber tape II of this utility model.

[0022] Figure 5 This is a schematic diagram of the process of winding the reinforcing fiber tape III according to this utility model.

[0023] Figure 6 This is a schematic diagram of the process of winding the thermoplastic protective sheet according to this utility model.

[0024] Figure 7 This is a schematic diagram of the present invention when an external steel pipe anti-bend device is added.

[0025] Among them, 1-inner tube; 2-reinforcing layer; 3-outer sheath; 4-reinforcing fiber tape I; 5-reinforcing fiber tape II; 6-reinforcing fiber tape III; 7-thermoplastic protective sheet; 8-outer steel pipe anti-bend device. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0027] This utility model discloses a novel TCP pipe structure that requires no joint connection, comprising an inner pipe 1, a reinforcing layer 2, an outer sheath 3, reinforcing fiber tape I 4, reinforcing fiber tape II 5, reinforcing fiber tape III 6, and a thermoplastic protective sheet 7; the specific structure is as follows: Figures 1-7 As shown, the two inner tubes 1 are coaxially aligned and fitted together, and a reinforcing layer 2 is coaxially sleeved on the outer surface of each inner tube 1, and an outer sheath 3 is coaxially sleeved on the outer surface of each reinforcing layer 2; both ends of each reinforcing layer 2 extend vertically to the corresponding end face of the corresponding outer sheath 3, and both ends of each inner tube 1 extend vertically to the corresponding end face of the corresponding reinforcing layer 2, so that the ends of the inner tube 1, the reinforcing layer 2 and the corresponding outer sheath 3 are all arranged in a stepped shape.

[0028] like Figures 1-7 As shown, the length of the corresponding outer sheath 3 extending from both ends of each reinforcing layer 2 is not less than 100mm, and it is necessary to ensure the stability of the reinforcing fiber tape Ⅲ6 wrapped around the adjacent reinforcing layer 2.

[0029] like Figures 1-7 As shown, the length of the corresponding reinforcing layer 2 extending from both ends of each inner tube 1 is not less than 200mm, and it is necessary to ensure the stability of the reinforcing fiber tape I4 wrapped around the adjacent inner tube 1.

[0030] In this invention, the portions of the two inner tubes 1 extending from the corresponding reinforcing layers 2 are further spirally wound with several layers of reinforcing fiber strips I4 in the circumferential direction, such as... Figures 1-7As shown, reinforcing fiber tape I4, reinforcing fiber tape II5, and reinforcing fiber tape III6 are all made of the same material as reinforcing layer 2, and the spiral winding angle of each layer of reinforcing fiber tape I4 is 80° to 89°. They are coaxially bonded to the corresponding inner tube 1 by means of simultaneous winding and hot melting heating. The winding thickness of reinforcing fiber tape I4 is half the thickness of the corresponding reinforcing layer 2, and its winding coverage must ensure that the part of the adjacent inner tube 1 extending out of the reinforcing layer 2 is covered within it.

[0031] like Figures 1-7 As shown, several layers of reinforcing fiber strips II5 are evenly distributed and heat-melted on the outermost reinforcing fiber strip I4 along the circumferential direction and arranged along the length of the inner tube 1, ensuring that the outer surface of the reinforcing fiber strip II5 is flush with the outer surface of the corresponding reinforcing layer 2; each adjacent reinforcing fiber strip II5 along the circumferential direction is tightly attached to each other, and the bonding coverage of each layer of reinforcing fiber strip II5 must ensure that the reinforcing fiber strip I4 is completely covered within it.

[0032] like Figures 1-7 As shown, several layers of reinforcing fiber tape III6 are spirally wound around the portions of the two reinforcing layers 2 that extend out of the corresponding outer sheath 3. The spiral winding angle of each layer of reinforcing fiber tape III6 is 54° to 55°, and the winding is carried out in a clockwise and counterclockwise alternating manner. The winding thickness of the reinforcing fiber tape III6 is 50% to 80% of the thickness of the corresponding outer sheath 3, and its winding coverage must ensure that the portions of the adjacent reinforcing layers 2 that extend out of the outer sheath 3 and the corresponding reinforcing fiber tape II5 are all covered within it.

[0033] like Figures 1-7 As shown, a thermoplastic protective sheet 7 is also wound around the outermost reinforcing fiber tape Ⅲ6. The thermoplastic protective sheet 7 is coaxially bonded to the corresponding reinforcing fiber tape Ⅲ6 by means of simultaneous winding and heating, and its coverage area must ensure that the reinforcing fiber tape Ⅲ6 is completely covered within it, and its outer surface must be flush with the outer surface of the corresponding outer sheath 3.

[0034] For locations requiring extreme high voltage or where bending needs to be restricted, to prevent connection point failure due to bending or extreme high voltage, an external steel pipe anti-bending device 8 can be coaxially sleeved on the thermoplastic protective sheet 7, such as... Figure 7 As shown, the two ends of the outer steel pipe anti-bend device 8 are coaxially sleeved on the corresponding ends of the corresponding outer sheath 3, thereby preventing connection point failure caused by bending or ultra-high voltage through the outer steel pipe anti-bend device 8.

[0035] The working principle of this utility model:

[0036] First, two adjacent inner tubes 1 are aligned and bonded together coaxially and then heat-fused together. Then, several layers of reinforcing fiber tape I4 are spirally wound around the parts of the two inner tubes 1 that extend out of the corresponding reinforcing layer 2, ensuring that the winding thickness of reinforcing fiber tape I4 is half the thickness of the corresponding reinforcing layer 2. Then, several layers of reinforcing fiber tape II5 are evenly distributed and heat-fused along the length of the inner tube 1 on the outermost reinforcing fiber tape I4, ensuring that the outer surface of reinforcing fiber tape II5 is flush with the outer surface of the corresponding reinforcing layer 2. Then, several layers of reinforcing fiber tape III6 are spirally wound around the parts of the two reinforcing layers 2 that extend out of the corresponding outer sheath 3, ensuring that the winding thickness of reinforcing fiber tape III6 is 50% to 80% of the thickness of the corresponding outer sheath 3. Then, a thermoplastic protective sheet 7 is wound around the outermost reinforcing fiber tape III6, ensuring that the outer surface of the thermoplastic protective sheet 7 is flush with the outer surface of the corresponding outer sheath 3.

[0037] For existing TCP pipes, the above method can also be used for seamless connection. Specifically, first peel off at least 300mm of one end of the reinforcing layer 2, and then peel off at least 200mm of the corresponding end of the inner tube 1. Then, the reinforcing fiber tape I 4, reinforcing fiber tape II 5, reinforcing fiber tape III 6 and thermoplastic protective sheet 7 can be wound layer by layer according to the above method.

[0038] The beneficial effects of this utility model are:

[0039] (1) The ends of the inner tube 1, the reinforcing layer 2 and the outer sheath 3 of this utility model are set in a stepped shape. Then, by the method of layer-by-layer winding, the adjacent TCP pipes can be connected without joints, thereby avoiding the problems of joint selection and sealing. At the same time, there is no need to lay TCP pipes according to the joint type, which improves flexibility and saves costs.

[0040] (2) The ends of the inner tube 1, the reinforcing layer 2 and the outer sheath 3 of this utility model are arranged in a stepped shape, so that when the layers are wound one by one, not only is the outer diameter of the TCP pipe not increased, but the connection is also secure and sealed.

[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A novel TCP pipe structure without joint connection, characterized by: The application relates to a kind of composite pipe, which comprises inner tube, reinforcing layer, outer sheath, reinforcing fiber tape I, reinforcing fiber tape II, reinforcing fiber tape III and thermoplastic protective sheet; two said inner tube left and right coaxial center alignment is attached, and reinforcing layer is also coaxially connected on the outer surface of each said inner tube, and outer sheath is also coaxially connected on the outer surface of each said reinforcing layer; the both ends of each said reinforcing layer are vertically extended to the corresponding end face of the outer sheath, and the both ends of each said inner tube are vertically extended to the corresponding end face of the reinforcing layer, so that the end of inner tube, reinforcing layer and corresponding outer sheath is arranged in a stepped manner; the part of two said inner tube extending out of the corresponding reinforcing layer is also spirally wrapped with several layers of reinforcing fiber tape I along the ring direction, and the outer surface of the reinforcing fiber tape II arranged along the length direction of the inner tube is uniformly distributed with several layers of thermally fused reinforcing fiber tape II along the circumferential direction on the outermost said reinforcing fiber tape I, and the outer surface of the reinforcing fiber tape II is arranged flush with the outer surface of the corresponding reinforcing layer; the part of two said reinforcing layer extending out of the corresponding outer sheath is also spirally wrapped with several layers of reinforcing fiber tape III along the ring direction, and the outermost said reinforcing fiber tape III is also wrapped with thermoplastic protective sheet.

2. A novel TCP pipe structure without joint connection according to claim 1, characterized in that: The length of the both ends of each said reinforcing layer extending out of the corresponding outer sheath is not less than 100 mm, and the stability of the reinforcing fiber tape III wrapped on the adjacent reinforcing layer needs to be ensured.

3. A novel TCP pipe structure without joint connection according to claim 2, characterized in that: The length of the both ends of each said inner tube extending out of the corresponding reinforcing layer is not less than 200 mm, and the stability of the reinforcing fiber tape I wrapped on the adjacent inner tube needs to be ensured.

4. A novel TCP pipe structure without joint connection according to claim 1, characterized in that: The reinforcing fiber tape I, reinforcing fiber tape II and reinforcing fiber tape III are made of the same material as the reinforcing layer, and the spiral wrapping angle of each layer of said reinforcing fiber tape I is 80-89 degrees, and the coaxial adhesion is achieved by wrapping and heating at the same time.

5. A novel TCP pipe structure without joint connection according to claim 4, characterized in that: The wrapping thickness of said reinforcing fiber tape I is half of the thickness of the corresponding said reinforcing layer, and the wrapping coverage range needs to ensure that the part of the adjacent inner tube extending out of the reinforcing layer is covered therein.

6. A novel TCP pipe structure without joint connection according to claim 1, characterized in that: Each adjacent said reinforcing fiber tape II along the circumferential direction is tightly arranged, and the covering range of each layer of said reinforcing fiber tape II needs to ensure that the reinforcing fiber tape I is completely covered therein.

7. A novel TCP pipe structure without joint connection according to claim 1, characterized in that: The spiral wrapping angle of each layer of said reinforcing fiber tape III is 54-55 degrees, and the wrapping is achieved by layer-by-layer clockwise and counterclockwise cross wrapping; the wrapping thickness of said reinforcing fiber tape III is 50-80% of the thickness of the corresponding said outer sheath, and the wrapping coverage range needs to ensure that the part of the adjacent reinforcing layer extending out of the outer sheath and the corresponding reinforcing fiber tape II are covered therein.

8. A novel TCP pipe structure without joint connection according to claim 1, characterized by: Said thermoplastic protective sheet is coaxially adhered to the corresponding said reinforcing fiber tape III by wrapping and heating at the same time, and the covering range needs to ensure that the reinforcing fiber tape III is completely covered therein, and the outer surface is arranged flush with the outer surface of the corresponding said outer sheath.

9. A novel TCP pipe structure without joint connection according to claim 1, characterized in that: Further comprising an outer steel pipe anti-bender; the outer steel pipe anti-bender is coaxially sleeved on the thermoplastic protective sheet, and two ends of the outer steel pipe anti-bender are coaxially sleeved on corresponding end portions of the outer sheath, thereby preventing the connection point from being invalid due to bending or extra-high voltage through the outer steel pipe anti-bender.

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