Gas pipeline river-crossing installation structure and method

Abstract

The application discloses a kind of gas pipeline installation structure across river, comprising: three-prism shape gas pipe, the left and right ends of the gas pipe are connected with the one end of corrugated pipe by second control valve, the second control valve is wirelessly connected with second controller, the top of the gas pipe is fixedly connected with the lower end of two first gas branch pipes and is communicated, and the upper end of two first gas branch pipes is connected with the left and right ends of second gas branch pipe by first control valve respectively.The application designs a kind of gas pipeline installation structure laid in river bottom, when the gas pipeline needs to be overhauled, the air bag is inflated by using gas to make the air bag expand, and the gas pipe is floated out of water by using the buoyancy of air bag, and is overhauled.The application places the gas pipe in river bottom normally, does not affect ship passage, and can conveniently and quickly float the gas pipe out of water when needing to be overhauled.

Description

Technical Field

[0001] This invention relates to the field of pipeline installation, and more particularly to a structure and method for installing gas pipelines across rivers. Background Technology

[0002] During the installation of gas pipelines, it is sometimes necessary to cross rivers. Currently, the common method for river-crossing installation is to erect supports on the riverbank. For example, patent application number 201721896960.6 discloses a gas pipeline river-crossing installation structure, including a gas pipeline and guide supports. The gas pipeline is supported by guide supports across concrete piers on both sides of the river. A steel sleeve is fitted over the gas pipeline. The guide supports are anchored to the concrete piers via embedded parts and are composed of welded I-beams and channel steel. The I-beams are welded to the embedded parts, and the gas pipeline is fixed to the channel steel with U-bolts. This utility model has a simple structure. During installation, the gas pipeline is first erected on the concrete piers on both sides of the river using guide supports, and then the gas pipeline is fixed to the guide supports with U-bolts to complete the installation. Construction is convenient, the cycle is short, the cost is low, and it is easy to inspect and maintain.

[0003] However, the aforementioned structure and similar installation structures, when erected on the water surface, would affect the passage of ships, while installing the gas pipeline on the riverbed would make maintenance inconvenient, requiring improvements. Summary of the Invention

[0004] The purpose of this invention is to provide a structure and method for installing gas pipelines across rivers, so as to solve the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A gas pipeline installation structure across a river includes: a triangular prism-shaped gas pipe, both ends of which are connected to one end of a corrugated pipe via a second control valve. The second control valve is wirelessly connected to a second controller. The top of the gas pipe is fixedly connected to and communicates with the lower ends of two first gas branch pipes. The upper ends of the two first gas branch pipes are respectively connected to the left and right ends of a second gas branch pipe via a first control valve. An air bladder is fixedly fitted on the second gas branch pipe. An air outlet is opened in the middle of the second gas branch pipe and is located inside the air bladder. The first control valve is wirelessly connected to the first controller.

[0007] Preferably, both ends of the second gas branch pipe are fixedly connected to and communicate with the lower ends of multiple first connecting pipes. The upper end of the first connecting pipe passes through the airbag and extends to the outside of the airbag. The upper end of the first connecting pipe is fixedly connected to and communicates with the lower end of the L-shaped gas outlet pipe. The gas outlet pipe located at the left end of the second gas branch pipe is symmetrical to the gas outlet pipe located at the right end of the second gas branch pipe. A sealing rod is provided on one side of the gas outlet pipe. The sealing rod is fixedly connected to the bracket through the first connecting rod. A guide tube is slidably sleeved on the bracket. The guide tube is fixedly connected to the upper end of the second connecting rod. The lower end of the second connecting rod passes through the airbag and is fixedly connected to the second gas branch pipe.

[0008] Preferably, the guide tube is threaded with a fixing screw.

[0009] Preferably, two pillars are provided on both the left and right sides of the airbag, and the gas pipe is located between the two pillars on the same side.

[0010] Preferably, one of the two columns on the same side has a dovetail groove on its surface. A dovetail-shaped slider is slidably connected in the dovetail groove. The dovetail-shaped slider is fixedly connected to an L-shaped limiting plate. A bearing is installed on the L-shaped limiting plate. The bearing is sleeved on a rotating shaft. A first bevel gear and a drive gear are fixedly sleeved on the rotating shaft. A rack that meshes with the drive gear is fixedly installed on the surface of the column. A threaded tube is obliquely arranged below the first bevel gear. The threaded tube is rotatably connected to the L-shaped limiting plate. The threaded tube is threadedly connected to a threaded rod. The end of the threaded rod away from the L-shaped limiting plate is fixedly connected to an L-shaped stop bar. A second bevel gear is fixedly sleeved on the threaded tube. The second bevel gear meshes with the first bevel gear.

[0011] Preferably, the rotating shaft is fixedly connected to the lower end of the connecting rope.

[0012] Preferably, the upper end of the connecting rope is fixedly connected to the float.

[0013] Preferably, a third control valve is installed inside the first connecting pipe, and the third control valve is wirelessly connected to a third controller.

[0014] The beneficial effects of this invention are:

[0015] 1. This invention designs a gas pipeline installation structure laid on the riverbed. When maintenance is needed, gas is used to inflate an air bladder, causing it to expand. The buoyancy of the air bladder then lifts the gas pipeline to the surface for maintenance. Normally, the gas pipeline remains on the riverbed, not obstructing ship passage. When maintenance is required, the gas pipeline can be easily and quickly brought to the surface.

[0016] 2. As the airbag rises and the gas pipe rises synchronously, the gas pipe moves the L-shaped limiting plate upwards in sync. Through a series of transmissions, the threaded rod can be driven to move below the gas pipe, so that the threaded rod and the L-shaped limiting plate cooperate to enclose the gas pipe. When the airbag rises to the water surface, the gas pipe can be flipped out of the water by pulling the connecting rope. The connecting rope is then tied to the boat, and the buoyancy of the airbag is used to support the gas pipe above the water surface for maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of part A;

[0019] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of part B;

[0020] Figure 4 For the present invention Figure 1 Enlarged schematic diagram of part C;

[0021] Figure 5 For the present invention Figure 1 Enlarged schematic diagram of part D;

[0022] Figure 6 For the present invention Figure 1 Enlarged schematic diagram of part E;

[0023] Figure 7 This is a schematic diagram of the connection structure of the dovetail slider and the L-shaped limiting plate of the present invention;

[0024] Reference numerals: 1. Float; 2. Connecting rope; 3. Column; 4. Bracket; 5. Airbag; 6. First gas branch pipe; 7. Gas pipe; 8. Corrugated pipe; 9. Second control valve; 10. Dovetail slider; 11. L-shaped limit plate; 12. Dovetail groove; 13. Rack; 14. Drive gear; 15. Threaded rod; 16. L-shaped stop bar; 17. Second bevel gear; 18. Bearing; 19. Shaft; 20. First bevel gear; 21. Gas outlet pipe; 23. First connecting pipe; 24. Second gas branch pipe; 25. First control valve; 26. Sealing rod; 27. First connecting rod; 28. Fixing screw; 29. ​​Guide tube; 30. Second connecting rod; 31. Threaded tube. Detailed Implementation

[0025] To make the technical means, creative features, achieved objectives, and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0026] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figure 1-7 As shown, a gas pipeline installation structure across a river includes: a triangular prism-shaped gas pipe 7, with both ends of the gas pipe 7 connected to one end of a corrugated pipe 8 via a second control valve 9. The second control valve 9 is wirelessly connected to a second controller. The top of the gas pipe 7 is fixedly connected to and communicates with the lower ends of two first gas branch pipes 6. The upper ends of the two first gas branch pipes 6 are respectively connected to the left and right ends of a second gas branch pipe 24 via a first control valve 25. An air bladder 5 is fixedly fitted onto the second gas branch pipe 24, and an air outlet is opened in the middle of the second gas branch pipe 24, located inside the air bladder 5. The first control valve 25 is wirelessly connected to the first controller. The first controller can control the on / off state of the first control valve 25, and the second controller can control the on / off state of the second control valve 9.

[0029] Both ends of the second gas branch pipe 24 are fixedly connected to and communicate with the lower ends of multiple first connecting pipes 23. The upper ends of the first connecting pipes 23 pass through the airbag 5 and extend to the outside of the airbag 5. The upper ends of the first connecting pipes 23 are fixedly connected to and communicate with the lower ends of the L-shaped gas outlet pipes 21. The gas outlet pipes 21 located at the left end of the second gas branch pipe 24 are symmetrical to the gas outlet pipes 21 located at the right end of the second gas branch pipe 24. A sealing rod 26 is provided on one side of the gas outlet pipe 21. The sealing rod 26 is fixedly connected to the bracket 4 through the first connecting rod 27. A guide tube 29 is slidably sleeved on the bracket 4. The guide tube 29 is fixedly connected to the upper end of the second connecting rod 30. The lower end of the second connecting rod 30 passes through the airbag 5 and is fixedly connected to the second gas branch pipe 24. A fixing screw 28 is threadedly connected to the guide tube 29. By rotating the fixing screw 28, the fixing screw 28 is pressed against the bracket 4, thereby fixing the relative position of the bracket 4 and the guide tube 29. When the fixing screw 28 is not pressed against the bracket 4, the bracket 4 can slide along the guide tube 29. A third control valve is installed inside the first connecting pipe 23, and the third control valve is wirelessly connected to the third controller. The third controller can control the opening and closing of the third control valve.

[0030] Working principle: The gas pipe 7 is placed at the bottom of the river. The left and right ends of the gas pipe 7 are connected to the main gas pipeline on the riverbank through corrugated pipes 8. When the gas pipe 7 needs to be brought to the surface for maintenance, the second controller controls the second control valve 9 at the end of the gas flow in the gas pipe 7 to close (for example, if the gas flows from the left end to the right end of the gas pipe 7, the second control valve 9 at the right end of the gas pipe 7 is closed). Then, the first controller controls the first control valve 25 to open, and the third controller controls the third control valve to close. This allows the gas flowing into the gas pipe 7 to enter the air bag 5 through the first gas branch pipe 6, the second gas branch pipe 24, and the gas outlet on the second gas branch pipe 24. This causes the air bag 5 to gradually inflate, and then the gas pipe 7 is brought to the surface for maintenance.

[0031] After maintenance, the third control valve is opened via the third controller. Then, the bracket 4 is moved, causing the sealing rod 26 to move via the first connecting rod 27. This causes the sealing rod 26 at the left end of the second gas branch pipe 24 to insert into the outlet pipe 21 on the same side, while the sealing rod 26 at the right end of the second gas branch pipe 24 is not inserted into the outlet pipe 21 on the same side. At this time, the gas in the airbag 5 can only be discharged through the outlet pipe 21 on the right side. (When the sealing rod 26 at the left end of the second gas branch pipe 24 is not inserted into the outlet pipe 21 on the same side, and the sealing rod 26 at the right end of the second gas branch pipe 24 is inserted into the outlet pipe 21 on the same side...) Inside 1, at this time, the gas in the airbag 5 is discharged through the left-side vent pipe 21. As the gas in the airbag 5 gradually decreases, the buoyancy of the airbag 5 decreases, causing the gas pipe 7 to sink to the bottom of the river. Since the right-side vent pipe 21 continuously sprays gas into the water, the sprayed gas generates thrust to drive the airbag 5 to move slowly laterally, which in turn drives the gas pipe 7 to move laterally synchronously. Since the gas pipe 7 is triangular prism-shaped, the sharp end of the gas pipe 7 gradually inserts into the silt at the bottom of the river as it moves, embedding the gas pipe 7 into the silt. This reduces the direct contact between the gas pipe 7 and the water, preventing rust and corrosion, and also fixes the gas pipe 7 to the bottom of the river.

[0032] If you do not want the gas pipe 7 to move on the riverbed, and do not insert the sealing rod 26 into any of the gas outlet pipes 21, since the direction of the gas discharge from the gas outlet pipe 21 at the left end of the second gas branch pipe 24 is opposite to the direction of the gas discharge from the gas outlet pipe 21 at the right end of the second gas branch pipe 24, their thrust on the airbag 5 cancels each other out, so that the airbag 5 and the gas pipe 7 do not move on the riverbed.

[0033] During maintenance, since there may be a small amount of gas leakage, it is advisable to choose a windy day to allow the gas to dilute as quickly as possible. During the maintenance process, the gas content in the air should be monitored, and maintenance should be stopped if any abnormality is found.

[0034] Example 2

[0035] like Figure 1-7As shown, while all other parts are the same as in Embodiment 1, the difference between this embodiment and Embodiment 1 is that: two pillars 3 are provided on both the left and right sides of the airbag 5, the pillars 3 are inserted into the riverbed, the gas pipe 7 is located between the two pillars 3 on the same side, and a dovetail groove 12 is opened on the surface of either of the two pillars 3 on the same side. A dovetail-shaped slider 10 is slidably connected in the dovetail groove 12. The dovetail-shaped slider 10 is fixedly connected to the L-shaped limiting plate 11. A bearing 18 is installed on the L-shaped limiting plate 11, and the bearing 18 is sleeved on the rotating shaft 19. Above, a first bevel gear 20 and a drive gear 14 are fixedly sleeved on the rotating shaft 19. A rack 13 that meshes with the drive gear 14 is fixedly mounted on the surface of the column 3. A threaded tube 31 is obliquely arranged below the first bevel gear 20. The threaded tube 31 is rotatably connected to the L-shaped limiting plate 11. The threaded tube 31 is threadedly connected to the threaded rod 15. The end of the threaded rod 15 away from the L-shaped limiting plate 11 is fixedly connected to the L-shaped stop bar 16. A second bevel gear 17 is fixedly sleeved on the threaded tube 31, and the second bevel gear 17 meshes with the first bevel gear 20. The rotating shaft 19 is fixedly connected to the lower end of the connecting rope 2. The upper end of the connecting rope 2 is fixedly connected to the float 1.

[0036] Working principle: During the upward movement of the gas pipe 7 driven by the airbag 5, the gas pipe 7 contacts the L-shaped limiting plate 11 and pushes the L-shaped limiting plate 11 to move upward synchronously along the dovetail groove 12. During the upward movement of the L-shaped limiting plate 11, the first bevel gear 20, the rotating shaft 19, and the drive gear 14 move upward synchronously. Since the drive gear 14 meshes with the rack 13, the first bevel gear 20, the rotating shaft 19, and the drive gear 14 rotate continuously during the upward movement. The first bevel gear 20 drives the second bevel gear 17 to rotate, and the second bevel gear 17 drives the threaded tube 31 to rotate. After the threaded tube 31 drives the threaded rod 15 and the L-shaped stop lever 16 to rotate at a certain angle, the rotation of the L-shaped stop lever 16 is blocked when it contacts the column 3. After the stop is applied, the threaded rod 15 and the L-shaped stop bar 16 stop rotating. However, since the threaded tube 31 continues to rotate, the threaded rod 15, which is threaded to the threaded tube 31, begins to move axially along the threaded tube 31 to below the gas pipe 7. This causes the L-shaped limiting plate 11 and the threaded rod 15 to cooperate in enclosing the gas pipe 7. As the gas pipe 7 and the L-shaped limiting plate 11 continue to move upward, the dovetail slider 10 disengages from the dovetail groove 12. When the airbag 5 floats to the surface, the maintenance personnel sail to the vicinity of the airbag 5 and then pull up the connecting rope 2. The connecting rope 2 drives the gas pipe 7 to move upward and flip out of the water through the L-shaped limiting plate 11 and the threaded rod 15. The connecting rope 2 is then tied to the boat, and the buoyancy of the airbag 5 is used to support the gas pipe 7 above the water surface, allowing for maintenance.

[0037] After the maintenance is completed and the gas pipe 7 is submerged back into the two pillars 3 at the bottom of the water, the dovetail slider 10 is reinserted into the dovetail groove 12, so that the L-shaped limiting plate 11 and the dovetail slider 10 slide down the dovetail groove 12 under the action of gravity. During this process, the first bevel gear 20, the rotating shaft 19, and the drive gear 14 rotate in opposite directions, so that the second bevel gear 17 and the threaded tube 31 rotate in the same direction, so that the threaded rod 15 moves in the opposite direction to reset.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipeline river-crossing installation structure, characterized by comprising: include: A triangular prism-shaped gas pipe (7) is connected to one end of a corrugated pipe (8) at both ends of the gas pipe (7) via a second control valve (9). The second control valve (9) is wirelessly connected to a second controller. The top of the gas pipe (7) is fixedly connected to the lower ends of two first gas branch pipes (6) and communicates with them. The upper ends of the two first gas branch pipes (6) are connected to the left and right ends of a second gas branch pipe (24) via a first control valve (25). An air bag (5) is fixedly fitted on the second gas branch pipe (24). An air outlet is opened in the middle of the second gas branch pipe (24). The air outlet is located inside the air bag (5). The first control valve (25) is wirelessly connected to a first controller. The left and right ends of the second gas branch pipe (24) are fixedly connected to and connected to the lower ends of multiple first connecting pipes (23). The upper end of the first connecting pipe (23) passes through the airbag (5) and extends to the outside of the airbag (5). The upper end of the first connecting pipe (23) is fixedly connected to and connected to the lower end of the L-shaped gas outlet pipe (21). The gas outlet pipe (21) located at the left end of the second gas branch pipe (24) is symmetrical to the gas outlet pipe (21) located at the right end of the second gas branch pipe (24). A third control valve is installed inside the first connecting pipe (23), and the third control valve is wirelessly connected to the third controller.

2. The gas pipeline river-crossing installation structure according to claim 1, characterized by: A sealing rod (26) is provided on one side of the gas outlet pipe (21). The sealing rod (26) is fixed to the bracket (4) through the first connecting rod (27). A guide tube (29) is slidably sleeved on the bracket (4). The guide tube (29) is fixed to the upper end of the second connecting rod (30). The lower end of the second connecting rod (30) passes through the airbag (5) and is fixed to the second gas branch pipe (24).

3. The gas pipeline river-crossing installation structure according to claim 2, characterized by: A fixing screw (28) is threaded onto the guide tube (29).

4. The gas pipeline cross-river installation structure according to claim 3, characterized in that: The airbag (5) has two pillars (3) on both the left and right sides, and the gas pipe (7) is located between the two pillars (3) on the same side.

5. A gas pipeline cross-river installation structure according to claim 4, characterized in that: A dovetail groove (12) is provided on the surface of either of the two columns (3) on the same side. A dovetail-shaped slider (10) is slidably connected in the dovetail groove (12). The dovetail-shaped slider (10) is fixedly connected to an L-shaped limiting plate (11). A bearing (18) is installed on the L-shaped limiting plate (11). The bearing (18) is sleeved on a rotating shaft (19). A first bevel gear (20) and a drive gear (14) are fixedly sleeved on the rotating shaft (19). A drive gear is fixedly provided on the surface of the column (3) and connected to the drive gear. (14) A meshing rack (13), a threaded tube (31) is obliquely arranged below the first bevel gear (20), the threaded tube (31) is rotatably connected to the L-shaped limiting plate (11), the threaded tube (31) is threadedly connected to the threaded rod (15), the end of the threaded rod (15) away from the L-shaped limiting plate (11) is fixedly connected to the L-shaped stop bar (16), and a second bevel gear (17) is fixedly sleeved on the threaded tube (31), the second bevel gear (17) meshes with the first bevel gear (20).

6. A gas pipeline cross-river installation structure according to claim 5, characterized in that: The rotating shaft (19) is fixedly connected to the lower end of the connecting rope (2).

7. A gas pipeline cross-river installation structure according to claim 6, characterized in that: The upper end of the connecting rope (2) is fixedly connected to the float (1).

8. An installation method for a gas pipeline cross-river installation structure as described in claim 7, characterized in that: This involves placing the gas pipe (7) at the bottom of the river, with the left and right ends of the gas pipe (7) connected to the main gas pipeline on the riverbank via corrugated pipes (8). When the gas pipe (7) needs to be brought to the surface for maintenance, the second control valve (9) at the end of the gas flow in the gas pipe (7) is closed by the second controller, the first control valve (25) is opened by the first controller, and the third control valve is closed by the third controller. This allows the gas flowing into the gas pipe (7) to enter the air bag (5) sequentially through the first gas branch pipe (6), the second gas branch pipe (24), and the outlet on the second gas branch pipe (24), causing the air bag (5) to gradually expand and then drive the gas pipe (7) to float to the surface.

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