Steel-plastic composite pipeline

Abstract

The utility model relates to the technical field of pipelines, in particular to a steel-plastic composite pipeline which comprises a first pipeline and a second pipeline, a first rectangular pipe opening is fixedly installed at the right end of the first pipeline, a second rectangular pipe opening is fixedly installed at the left end of the second pipeline, a threaded groove is formed in the outer surface of the first pipeline, and the first pipeline is in spiral transmission connection with a threaded ring through the threaded groove. A transmission ring is arranged on the right side of the threaded ring, the threaded ring and the transmission ring are arranged on the outer surface of the first pipeline in a sleeving mode, a first inner cavity is formed in the first pipeline, an extrusion plate is slidably connected into the first inner cavity, a first air bag is fixedly installed on the right end face of the extrusion plate, and the extrusion plate is fixedly connected with the transmission ring; a communicating pipe is arranged between the first air bag and the second inner cavity in a communicating mode. Through the arrangement of the first insertion rod, the second insertion rod and the third insertion rod, rapid installation is achieved, compared with a traditional bolt fixing mode, the installation efficiency is improved, and meanwhile the leakage problem caused by bolt loosening is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a steel-plastic composite pipeline. Background Art

[0002] The oil pipeline system, that is, the pipeline system used to transport oil and petroleum products, is mainly composed of oil pipelines, oil stations and other auxiliary related equipment. It is one of the main equipment in the oil storage and transportation industry, and it is also the most important transportation equipment for crude oil and petroleum products. It has the characteristics of large transportation capacity, good airtightness, low cost and high safety factor.

[0003] Pipelines used for oil transportation are directly exposed to the outside and are easily eroded by rainwater. In order to avoid various accidents, composite pipes with wear and corrosion resistance are often selected. However, the existing wear and corrosion resistant composite pipes are mostly fixed by screwing a flange with multiple bolts when connected, which is not only time-consuming and labor-intensive, but also reduces work efficiency. It is also not conducive to the later disassembly of the composite pipes, and the bolts are prone to loosening, affecting the sealing. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a steel-plastic composite pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a steel-plastic composite pipe, comprising a pipe 1 and a pipe 2, the right end of the pipe 1 is fixedly installed with a rectangular pipe mouth 1, the left end of the pipe 2 is fixedly installed with a rectangular pipe mouth 2, the outer surface of the pipe 1 is provided with a thread groove, and a thread ring is connected to the thread groove through spiral transmission, a transmission ring is provided on the right side of the thread ring, and the thread ring and the transmission ring are both sleeved on the outer surface of the pipe 1, an inner cavity 1 is provided inside the pipe 1, an extrusion plate is slidably connected inside the inner cavity 1, an air bag 1 is fixedly installed on the right end surface of the extrusion plate, the extrusion plate is fixedly connected to the transmission ring, an inner cavity 2 is provided on the right side of the inner cavity 1, a connecting pipe is provided between the air bag 1 and the inner cavity 2, a piston plate 1 is slidably connected inside the inner cavity 2, a plug rod 1 is fixedly installed on the upper end of the piston plate 1, and a spring 1 is fixedly installed on the upper end surface of the piston assistant 1.

[0006] Furthermore, a second insertion rod is fixedly installed on the left end of the second rectangular pipe mouth, a second slot is opened on the right end surface of the first rectangular pipe mouth corresponding to the second insertion rod, and a first slot is opened on the lower end surface of the second slot corresponding to the first insertion rod.

[0007] Furthermore, an inner cavity three is opened on the right side inside the rectangular pipe opening one, and two groups of transmission plates are slidably connected inside the inner cavity three, and a spring two is fixedly installed between the two groups of transmission plates.

[0008] Furthermore, two groups of connecting rods are symmetrically arranged on the right side of the rectangular pipe opening, and one end of the two groups of connecting rods are rotatably connected to the corresponding transmission plates.

[0009] Furthermore, a top block is provided on the right side of the connecting rod, and the other ends of the two groups of connecting rods are rotatably connected to the top block.

[0010] Furthermore, a third insertion rod is fixedly mounted on the side end surface of the transmission plate, and the combination of the third insertion rod and the transmission plate is symmetrically arranged.

[0011] Furthermore, a fixing groove is provided inside the rectangular pipe opening 1, and a fixing ring is fixedly installed on the left end of the rectangular pipe opening 2.

[0012] Furthermore, the fixing ring is inserted into the fixing groove, and a limiting groove is fixedly installed on the corresponding insertion rod three and the inner wall.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model realizes quick installation by providing the first, second and third insertion rods. Compared with the traditional bolt fixing method, it not only improves the installation efficiency, but also avoids the leakage problem caused by the loosening of the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is the overall structural view of the utility model;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0019] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0020] Description of reference numerals:

[0021] 1. Pipeline 1; 2. Pipeline 2; 3. Rectangular pipe mouth 1; 4. Rectangular pipe mouth 2; 5. Threaded groove; 6. Threaded ring; 7. Transmission ring; 8. Inner cavity 1; 9. Extrusion plate; 10. Airbag 1; 11. Inner cavity 2; 12. Connecting pipe; 13. Piston plate 1; 14. Spring 1; 15. Rod 1; 16. Rod 2; 17. Slot 1; 18. Slot 2; 19. Inner cavity 3; 20. Transmission plate; 21. Rod 3; 22. Spring 2; 23. Connecting rod; 24. Top block; 25. Fixed groove; 26. Fixed ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 , the utility model provides a technical solution:

[0024] A steel-plastic composite pipe comprises a pipe 1 and a pipe 2, wherein a rectangular pipe mouth 3 is fixedly installed on the right end of the pipe 1, and a rectangular pipe mouth 4 is fixedly installed on the left end of the pipe 2, a thread groove 5 is provided on the outer surface of the pipe 1, and a thread ring 6 is connected to the thread groove 5 through spiral transmission, a transmission ring 7 is provided on the right side of the thread ring 6, and the thread ring 6 and the transmission ring 7 are both sleeved on the outer surface of the pipe 1, an inner cavity 8 is provided inside the pipe 1, an extrusion plate 9 is slidably connected inside the inner cavity 8, an air bag 10 is fixedly installed on the right end surface of the extrusion plate 9, the extrusion plate 9 is fixedly connected to the transmission ring 7, an inner cavity 2 11 is provided on the right side of the inner cavity 8, a connecting pipe 12 is provided between the air bag 10 and the inner cavity 2 11, a piston plate 13 is slidably connected inside the inner cavity 2 11, an insert rod 15 is fixedly installed on the upper end of the piston plate 13, and a spring 14 is fixedly installed on the upper end surface of the piston assistant.

[0025] First, insert the rectangular pipe opening 24 on the pipe 2 into the corresponding rectangular pipe opening 3 on the pipe 1, so that the insertion rod 216 is inserted into the slot 218, and the fixing ring 26 is inserted into the fixing groove 25, and then twist the threaded ring 6 to lift the transmission plate 20, so that the transmission plate 20 drives the extrusion plate 9 to move inside the inner cavity 8 and squeeze the airbag 10, so that the gas in the airbag 10 enters the inner cavity 211 through the connecting tube 12.

[0026] A second plug rod 16 is fixedly installed on the left end of the rectangular pipe opening 4, a second slot 18 is provided on the right end surface of the rectangular pipe opening 3 corresponding to the second plug rod 16, and a slot 17 is provided on the lower end surface of the slot 18 corresponding to the first plug rod 15.

[0027] An inner cavity 3 19 is provided on the right side of the rectangular pipe opening 3 , and two groups of transmission plates 20 are slidably connected inside the inner cavity 3 19 , and a spring 22 is fixedly installed between the two groups of transmission plates 20 .

[0028] The piston plate 13 is then raised in the inner cavity 2 11 and the insertion rod 15 is driven to be inserted into the slot 17 to preliminarily fix the pipe 1 1 and the pipe 2 2. When the pipe 1 1 and the pipe 2 2 are fixedly installed close to each other, the top block 24 will be squeezed synchronously to displace the top block 24 into the inner cavity 3 19.

[0029] Two groups of connecting rods 23 are symmetrically arranged on the right side of the rectangular pipe opening, and one end of the two groups of connecting rods 23 is rotatably connected to the corresponding transmission plate 20.

[0030] Furthermore, a top block 24 is provided on the right side of the connecting rod 23, and the other ends of the two groups of connecting rods 23 are rotatably connected to the top block 24. A plug rod three 21 is fixedly installed on the side end surface of the transmission plate 20. The combination of the plug rod three 21 and the transmission plate 20 is symmetrically arranged. A fixing groove 25 is opened inside the rectangular pipe mouth 1 3, and a fixing ring 26 is fixedly installed on the left end of the rectangular pipe mouth 2 4.

[0031] The fixing ring 26 is inserted into the fixing groove 25 and fixedly installed with the limiting groove corresponding to the insertion rod 3 21 and the inner wall;

[0032] When the top block 24 is displaced, the two groups of transmission plates 20 will move relative to each other through the two groups of connecting rods 23, and each group of plug rods 3 21 will be displaced. The upper plug rod 3 21 will be fixed in a limited position with the limiting groove on the plug rod 2 16, and the lower plug rod 3 21 will be fixed in a limited position with the limiting groove on the fixing ring 26. In this way, the installation between pipe 1 and pipe 2 2 can be completed, and the self-locking property of the threaded structure can be used to firmly fix the two.

[0033] Most of the existing wear-resistant and corrosion-resistant composite pipes are fixed by screwing a flange with multiple bolts during connection, which is not only time-consuming and labor-intensive, reducing work efficiency, but also not conducive to the later disassembly of the composite pipes, and the bolts are prone to loosening, thereby affecting the sealing. Therefore, the utility model realizes quick installation by providing an insert rod 15, an insert rod 2 16 and an insert rod 3 21. Compared with the traditional bolt fixing method, it not only improves the installation efficiency, but also avoids the leakage problem caused by the loosening of the bolts.

[0034] Working principle: First, insert the rectangular pipe opening 24 on the pipe 2 into the corresponding rectangular pipe opening 3 on the pipe 1, so that the insertion rod 216 is inserted into the slot 218, and the fixing ring 26 is inserted into the fixing groove 25, and then the threaded ring 6 is twisted to make the threaded ring 6 lift the transmission plate 20, so that the transmission plate 20 drives the extrusion plate 9 to move inside the inner cavity 8, and squeezes the airbag 10, so that the gas in the airbag 10 enters the inner cavity 211 through the connecting pipe 12, so that the piston plate 13 rises in the inner cavity 11 at the same time, and drives the insertion rod 15 to be inserted into the slot 17, so as to connect the pipe 1 and the pipe. When pipe 1 and pipe 2 are fixedly installed close to each other, the top block 24 will be squeezed synchronously to make the top block 24 displace into the inner cavity three 19. When the top block 24 is displaced, the two groups of transmission plates 20 will move relative to each other through the two groups of connecting rods 23, and carry a group of plug rods three 21 for displacement respectively. The upper plug rod three 21 will be fixed with the limiting groove on the plug rod two 16, and the lower plug rod three 21 will be fixed with the limiting groove on the fixing ring 26. In this way, the installation between pipe 1 and pipe 2 can be completed, and the self-locking property of the threaded structure can be used to firmly fix the two.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A steel-plastic composite pipe, comprising a pipe 1 (1) and a pipe 2 (2), wherein a rectangular pipe opening 1 (3) is fixedly installed at the right end of the pipe 1 (1), and a rectangular pipe opening 2 (4) is fixedly installed at the left end of the pipe 2 (2), characterized in that: The outer surface of the pipe (1) is provided with a thread groove (5), and is connected to a thread ring (6) by spiral transmission through the thread groove (5). A transmission ring (7) is provided on the right side of the thread ring (6). Both the thread ring (6) and the transmission ring (7) are sleeved on the outer surface of the pipe (1). An inner cavity (8) is provided inside the pipe (1). An extrusion plate (9) is slidably connected to the inner cavity (8). A gas cylinder is fixedly installed on the right end surface of the extrusion plate (9). The airbag (10) is provided with an inner cavity (11) on the right side of the inner cavity (8), a connecting pipe (12) is provided between the airbag (10) and the inner cavity (11), a piston plate (13) is slidably connected inside the inner cavity (11), an insert rod (15) is fixedly installed on the upper end of the piston plate (13), and a spring (14) is fixedly installed on the upper end surface of the piston plate (13).

2. The steel-plastic composite pipe according to claim 1, characterized in that: The left end of the second rectangular pipe opening (4) is fixedly mounted with a second insertion rod (16), the right end surface of the first rectangular pipe opening (3) is provided with a second slot (18) corresponding to the second insertion rod (16), and the lower end surface of the second slot (18) is provided with a first slot (17) corresponding to the first insertion rod (15).

3. The steel-plastic composite pipe according to claim 2, characterized in that: An inner cavity three (19) is provided on the right side of the inner part of the rectangular pipe opening one (3), two groups of transmission plates (20) are slidably connected inside the inner cavity three (19), and a spring two (22) is fixedly installed between the two groups of transmission plates (20).

4. The steel-plastic composite pipe according to claim 3, characterized in that: Two groups of connecting rods (23) are symmetrically arranged on the right side of the rectangular pipe opening, and one end of the two groups of connecting rods (23) are rotatably connected to the corresponding transmission plate (20).

5. The steel-plastic composite pipe according to claim 4, characterized in that: A top block (24) is arranged on the right side of the connecting rod (23), and the other ends of the two groups of connecting rods (23) are rotatably connected to the top block (24).

6. The steel-plastic composite pipe according to claim 5, characterized in that: A third insertion rod (21) is fixedly mounted on the side end surface of the transmission plate (20), and the combination of the third insertion rod (21) and the transmission plate (20) is symmetrically arranged.

7. The steel-plastic composite pipe according to claim 6, characterized in that: A fixing groove (25) is provided inside the rectangular pipe opening 1 (3), and a fixing ring (26) is fixedly installed at the left end of the rectangular pipe opening 2 (4).

8. The steel-plastic composite pipe according to claim 7, characterized in that: The fixing ring (26) is inserted into the fixing groove (25) and fixedly installed with the limiting groove corresponding to the insertion rod three (21) and the inner wall.

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