High-pressure composite pipe structure

Abstract

The utility model provides a high-pressure composite pipe structure which comprises a composite pipe assembly, the composite pipe assembly comprises a core layer pipe, an outer protection layer, two sealing rings, two buckling and pressing connector mechanisms, a steel framework layer and an inorganic fiber reinforcing layer, the steel framework layer is arranged on the outer wall of the core layer pipe, and the inorganic fiber reinforcing layer is arranged on the outer wall of the core layer pipe. The inorganic fiber reinforcement layer is arranged on the outer wall of the steel skeleton layer; the outer protection layer is arranged on the outer wall of the inorganic fiber reinforcement layer; the steel framework layer only bears rigidity and stiffness, the pressure bearing capacity of the core layer pipe is borne by the inorganic fiber reinforcing layer, the inorganic fiber reinforcing layer is composed of continuous glass fibers or continuous basalt fibers, and the continuous glass fibers or the continuous basalt fibers are inorganic non-metal fibers and are non-metal together with polyethylene. And the pressure bearing capacity and the long service life of the pipeline cannot be influenced by thermal expansion and cold contraction differences.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipes, in particular to a high-pressure composite pipe structure. Background Art

[0002] In traditional steel skeleton reinforced polyethylene composite pipes, the steel skeleton layer in the pipeline structure not only bears the function of pipeline stiffness and rigidity, but also bears the function of pipeline pressure bearing capacity. If the steel skeleton structure layer and the polyethylene structure layer slip due to thermal expansion and contraction, the pressure bearing capacity and long-term service life of the pipeline will be greatly affected. Double-reinforced polyethylene pipes solve this fatal problem. For this purpose, a high-pressure composite pipe structure is proposed. Utility Model Content

[0003] In view of this, the embodiments of the present invention hope to provide a high-pressure composite pipe structure to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0004] The technical solution of the embodiment of the utility model is achieved as follows: a high-pressure composite pipe structure, including a composite pipe assembly, the composite pipe assembly including a core layer pipe, an outer protective layer, two sealing rings, two crimping joint mechanisms, a steel skeleton layer and an inorganic fiber reinforcement layer, wherein the outer wall of the core layer pipe is provided with a steel skeleton layer, and the inorganic fiber reinforcement layer is arranged on the outer wall of the steel skeleton layer; the outer protective layer is arranged on the outer wall of the inorganic fiber reinforcement layer, and the two sealing rings are respectively arranged at the two ends of the outer protective layer, the steel skeleton layer and the inorganic fiber reinforcement layer, and the two sealing rings are symmetrically arranged on the outer wall of the core layer pipe; the two crimping joint mechanisms are symmetrically arranged on the outer wall of the outer protective layer and the two sealing rings.

[0005] In some embodiments, the core layer tube, the outer protective layer and the sealing ring are made of polyethylene.

[0006] In some embodiments, the inorganic fiber reinforcement layer is made by continuously spirally winding glass fibers or basalt fibers in a winding machine, and the wound glass fibers or basalt fibers are completely impregnated with hot melt adhesive.

[0007] In some embodiments, the crimping joint mechanism includes a plurality of arc-shaped plates and a plurality of fixing ears, wherein the plurality of arc-shaped plates are annularly arranged on the outer walls of the outer protective layer and the two sealing rings, and two of the plurality of fixing ears are symmetrically arranged on the outer walls of the corresponding arc-shaped plates; fixing grooves are evenly arranged on the inner walls of the arc-shaped plates; fixing through holes are arranged on the outer walls of the fixing ears, and fixing bolts are arranged in the fixing through holes of the fixing ears on one of the arc-shaped plates and the fixing through holes of the fixing ears on the other arc-shaped plate.

[0008] In some embodiments, the fixing bolt is provided with a spring washer.

[0009] In some embodiments, the fixing groove is a groove or a thread groove.

[0010] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0011] In the utility model, the steel skeleton layer only bears the functions of rigidity and stiffness, and the pressure bearing capacity of the core layer pipe is borne by the inorganic fiber reinforcement layer. The inorganic fiber reinforcement layer is composed of continuous glass fiber or continuous basalt fiber. The continuous glass fiber or continuous basalt fiber is an inorganic non-metallic fiber, which is non-metallic like polyethylene, and will not affect the pressure bearing capacity and long-term service life of the pipeline due to the difference in thermal expansion and contraction.

[0012] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a side structural diagram of the utility model;

[0016] Figure 3 For this utility model Figure 2 AA side section structure diagram;

[0017] Figure 4 For this utility model Figure 3 A magnified structural diagram of area B;

[0018] Figure 5 For this utility model Figure 3 The CC side section structure diagram;

[0019] Figure 6 For this utility model Figure 5 The enlarged structure diagram of the D region;

[0020] Figure 7 It is a structural diagram of the crimping joint mechanism of the utility model.

[0021] Figure numerals: 1. composite pipe assembly; 2. fixing groove; 3. fixing through hole; 4. fixing bolt; 10. core layer pipe; 11. outer protective layer; 12. sealing ring; 13. crimping joint mechanism; 14. steel skeleton layer; 15. inorganic fiber reinforcement layer; 130. arc plate; 131. fixing ear. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the quantity of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities;

[0024] In the present invention, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, a direct connection, welding, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the description and drawings combined with specific circumstances.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-Figure 7As shown, an embodiment of the utility model provides a high-pressure composite pipe structure, including a composite pipe assembly 1, the composite pipe assembly 1 includes a core layer pipe 10, an outer protective layer 11, two sealing rings 12, two crimping joint mechanisms 13, a steel skeleton layer 14 and an inorganic fiber reinforcement layer 15, wherein the outer wall of the core layer pipe 10 is provided with a steel skeleton layer 14, and the inorganic fiber reinforcement layer 15 is arranged on the outer wall of the steel skeleton layer 14, the outer protective layer 11 is arranged on the outer wall of the inorganic fiber reinforcement layer 15, and the two sealing rings 12 are respectively arranged at both ends of the outer protective layer 11, the steel skeleton layer 14 and the inorganic fiber reinforcement layer 15, the two sealing rings 12 are symmetrically arranged on the outer wall of the core layer pipe 10, and the two crimping joint mechanisms 13 are symmetrically arranged on the outer walls of the outer protective layer 11 and the two sealing rings 12.

[0027] In this embodiment, specifically, the core layer tube 10 , the outer protective layer 11 and the sealing ring 12 are made of polyethylene.

[0028] In this embodiment, specifically, the main function of the core layer tube 10 is to prevent the medium transported by the pipeline from contacting other parts of the pipe body. The polyethylene of the core layer tube 10 is hot-melt connected with the sealing ring 12 to ensure that the end face of the pipeline does not leak and at the same time ensure that the medium transported by the pipeline does not penetrate into the pipeline wall.

[0029] In this embodiment, the outer protective layer 11 is used to ensure the beautiful appearance of the pipeline and protect against ultraviolet rays.

[0030] In this embodiment, specifically, the inorganic fiber reinforcement layer 15 is made by continuously spirally winding glass fibers or basalt fibers left and right by a winding machine, and the wound glass fibers or basalt fibers are completely impregnated with hot melt adhesive.

[0031] In this embodiment, specifically, the crimping joint mechanism 13 includes a plurality of arc-shaped plates 130 and a plurality of fixing ears 131, wherein the plurality of arc-shaped plates 130 are annularly arranged on the outer walls of the outer protective layer 11 and the two sealing rings 12, and two of the plurality of fixing ears 131 are symmetrically arranged on the outer walls of the corresponding arc-shaped plates 130, the inner walls of the arc-shaped plates 130 are evenly provided with fixing grooves 2, the outer walls of the fixing ears 131 are provided with fixing through holes 3, and the fixing ears on one of the arc-shaped plates 130 are provided with fixing grooves 2. A fixing bolt 4 is provided in the fixing through hole 3 of 131 and the fixing through hole 3 of the fixing ear 131 on another arc-shaped plate 130. Through the above arrangement, several arc-shaped plates 130 are combined into a circular ring, and the corresponding fixing bolts 4 are passed through and fixed in the fixing through holes 3 on the corresponding fixing ears 131. By tightening the fixing bolts 4, several arc-shaped plates 130 form a whole with the core layer tube 10, the outer protective layer 11, the sealing ring 12, the steel skeleton layer 14 and the inorganic fiber reinforcement layer 15.

[0032] In this embodiment, specifically, the fixing bolt 4 is provided with a spring washer (not shown in the figure). By providing the spring washer as above, the problem of easy loosening of metal joints in the composite pipeline industry is overcome.

[0033] In this embodiment, specifically, the fixing groove 2 is a groove or a threaded groove. The inner wall of the arc plate 130 is provided with a groove or a threaded groove, so as to increase the adhesion when the arc plate 130 is combined with the outer protective layer 11 and the two sealing rings 12.

[0034] When the utility model is working: the steel skeleton layer 14 only bears the rigidity and stiffness functions, the pressure bearing capacity of the core layer tube 10 is borne by the inorganic fiber reinforcement layer 15, and the inorganic fiber reinforcement layer 15 is composed of continuous glass fiber or continuous basalt fiber. The continuous glass fiber or continuous basalt fiber is an inorganic non-metallic fiber, which is non-metallic like polyethylene, and will not affect the pressure bearing capacity and long-term service life of the pipeline due to the difference in thermal expansion and contraction. First, 5mm to 20mm of the outer protective layer 11, the steel skeleton layer 14 and the inorganic fiber reinforcement layer 15 are removed, and the ends of the core layer tube 10, the outer protective layer 11, the steel skeleton layer 14 and the inorganic fiber reinforcement layer 15 are fed into the injection molding machine 50mm to 200mm. The feeding length is determined according to the pipeline design parameters. After preheating for 1 to 2 minutes, the injection molding sealing ring 12 is performed, and the sealing ring 12 not only seals the end face of the core layer tube 10, but also can directly adopt butt welding hot melt connection when connecting the core layer tube 10, thereby reducing the number of separate core layer tube 10 connectors.

[0035] A plurality of arc plates 130 are combined into a circular ring and fixed by passing corresponding fixing bolts 4 through the fixing through holes 3 on the corresponding fixing ears 131. The inner wall of the arc plate 130 has grooves or threaded grooves, the purpose of which is to increase the adhesion when the arc plate 130 is combined with the outer protective layer 11 and the two sealing rings 12. By tightening the fixing bolts 4, the plurality of arc plates 130 are formed into a whole with the core layer tube 10, the outer protective layer 11, the sealing ring 12, the steel skeleton layer 14 and the inorganic fiber reinforcement layer 15.

[0036] Thereafter, a heater is used to heat the plurality of arc plates 130 to 150 to 200 degrees Celsius, and the heat is transferred to the core layer tube 10, the outer protective layer 11, the sealing ring 12 and the inorganic fiber reinforced layer 15 through the metal of the arc plates 130, so that the polyethylene and inorganic non-metallic reinforcing materials of the core layer tube 10, the outer protective layer 11, the sealing ring 12 and the inorganic fiber reinforced layer 15 are softened. At the same time, the fixing bolts 4 on the plurality of fixing ears 131 are tightened to allow the plurality of arc plates 130 to form a whole with the core layer tube 10, the outer protective layer 11, the sealing ring 12 and the inorganic fiber reinforced layer 15, and naturally cool and shape them. After cooling and shaping, spring washers are installed on all the fixing bolts 4 on the plurality of fixing ears 131.

[0037] The medium conveyed by the core layer pipe 10 does not contact the metal, the joint does not increase the resistance of the core layer pipe 10, and the wear resistance, corrosion resistance, sanitary quality, etc. are consistent with the pipeline body.

[0038] It does not require high-power crimping machinery and is not limited by the diameter of the core layer tube.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A high-pressure composite pipe structure, comprising a composite pipe assembly (1), characterized in that: The composite pipe assembly (1) comprises a core layer pipe (10), an outer protective layer (11), two sealing rings (12), two crimping joint mechanisms (13), a steel skeleton layer (14) and an inorganic fiber reinforcement layer (15), wherein: The outer wall of the core layer tube (10) is provided with a steel skeleton layer (14), and the inorganic fiber reinforcement layer (15) is provided on the outer wall of the steel skeleton layer (14); The outer protective layer (11) is arranged on the outer wall of the inorganic fiber reinforced layer (15), and the two sealing rings (12) are respectively arranged at the two ends of the outer protective layer (11), the steel skeleton layer (14) and the inorganic fiber reinforced layer (15), and the two sealing rings (12) are symmetrically arranged on the outer wall of the core layer tube (10); The two crimping joint mechanisms (13) are symmetrically arranged on the outer walls of the outer protective layer (11) and the two sealing rings (12).

2. The high pressure composite pipe structure according to claim 1, characterized in that: The core layer tube (10), the outer protective layer (11) and the sealing ring (12) are made of polyethylene.

3. The high pressure composite pipe structure according to claim 1, characterized in that: The inorganic fiber reinforcement layer (15) is made by continuously spirally winding glass fibers or basalt fibers in the left and right directions using a winding machine, and the wound glass fibers or basalt fibers are completely impregnated with hot melt adhesive.

4. The high pressure composite pipe structure according to claim 1, characterized in that: The crimping joint mechanism (13) comprises a plurality of arc-shaped plates (130) and a plurality of fixing ears (131), wherein: A plurality of the arc-shaped plates (130) are annularly arranged on the outer walls of the outer protective layer (11) and the two sealing rings (12), and two of the plurality of fixing ears (131) are symmetrically arranged on the outer walls corresponding to the arc-shaped plates (130); The inner wall of the arc-shaped plate (130) is evenly provided with fixing grooves (2); A fixing through hole (3) is provided on the outer wall of the fixing ear (131), and fixing bolts (4) are provided in the fixing through hole (3) of the fixing ear (131) on one of the arc-shaped plates (130) and the fixing through hole (3) of the fixing ear (131) on the other arc-shaped plate (130).

5. The high pressure composite pipe structure according to claim 4, characterized in that: The fixing bolt (4) is provided with a spring washer.

6. The high pressure composite pipe structure according to claim 4, characterized in that: The fixing groove (2) is a groove or a thread groove.

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