A corrosion-resistant pressure steel pipe

Abstract

This utility model discloses a corrosion-resistant pressure steel pipe, belonging to the field of steel pipe technology. It includes: multiple pipe bodies welded together sequentially; several reinforcing crossbars welded to the outer wall of each pipe body, extending axially along the pipe body; and several grooves on each crossbar; a reinforcing ring, the inner end of which is inserted into a groove on the same circumferential surface; the reinforcing ring comprising a first ring and a second ring, the first ring including a first rotating end and a first connecting end, and the second ring including a second rotating end and a second connecting end, the first rotating end and the second rotating end being rotatably connected; and a limiting device connecting the first connecting end and the second connecting end together. The inner walls of the first and second rings are inserted into grooves on the same circumferential surface, and then the limiting device connects the first connecting end and the second connecting end together, thereby fixing the reinforcing ring onto the reinforcing crossbars, making installation very convenient.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe technology, and specifically relates to a corrosion-resistant pressure steel pipe. Background Technology

[0002] Pressure steel pipes, also known as hydraulic pressure pipes, are steel pipelines used to transport extremely high-pressure water flows. They are mainly used in the hydraulic transportation of hydroelectric power station units. The interior of the steel pipe is a closed environment, and the intensity of the water flow can be controlled by opening and closing sluice gates or barriers. To ensure durability, existing pressure steel pipes for hydroelectric power units have an anti-corrosion and wear-resistant layer installed on their inner walls.

[0003] The patent with publication number CN222103128U discloses a pressure steel pipe for a hydropower station unit that is pressure resistant and corrosion resistant. The pipe includes multiple pressure steel pipes that are welded together. The outer wall of the pressure steel pipe is welded with multiple stiffening rings and transverse reinforcing ribs. Both ends of the transverse reinforcing ribs are welded with connecting plates. The bottom of the connecting plates is welded to the pressure steel pipe. Connecting bolts connect the connecting plates on two adjacent pressure steel pipes.

[0004] The stiffening ring and the horizontal reinforcing rib of the pressure steel pipe are welded together at the junction, but the dimensions between the stiffening ring and the horizontal reinforcing rib are difficult to control, and each junction needs to be welded, which is very troublesome. Utility Model Content

[0005] The purpose of this utility model is to provide a corrosion-resistant pressure steel pipe with a very convenient installation of the reinforcing ring.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant pressure steel pipe, comprising:

[0007] Multiple tubes are welded together in sequence. Several reinforcing crossbars are welded to the outer wall of each tube. The reinforcing crossbars extend along the axial direction of the tube. Several grooves are provided on the reinforcing crossbars. The grooves are arranged in sequence along the length direction of the reinforcing crossbars.

[0008] A reinforcing ring body, the inner end of which is inserted into the groove on the same circumferential surface, the reinforcing ring body includes a first ring body and a second ring body, the first ring body includes a first rotating end and a first connecting end, the second ring body includes a second rotating end and a second connecting end, and the first rotating end and the second rotating end are rotatably connected;

[0009] A limiting device that connects the first connecting end and the second connecting end together.

[0010] Furthermore, the limiting device includes:

[0011] The first limiting rod has a first connecting block fixed on the first connecting end, a first through hole on the first connecting block, and a first limiting post fixed on the first limiting rod that is inserted into the first through hole.

[0012] The second limiting rod has a second connecting block fixed on the second connecting end, a second through hole on the second connecting block, and a second limiting post fixed on the second limiting rod that is inserted into the second through hole.

[0013] The limiting bolt has a first connecting hole on the first limiting rod and a second connecting hole on the second limiting rod, and the limiting bolt passes through the first connecting hole and the second connecting hole in sequence;

[0014] A limiting nut is threadedly connected to one end of the limiting bolt that passes through the first connecting hole.

[0015] Furthermore, the first limiting rod is provided with two first connecting holes, which are located at both ends of the first limiting rod. The second limiting rod is provided with two second connecting holes, which are located at both ends of the second limiting rod. The first connecting holes and the second connecting holes correspond one-to-one, and the limiting bolt passes through the corresponding first connecting hole and the second connecting hole in sequence.

[0016] Furthermore, it also includes a fastening bolt, wherein the first ring body is provided with a first connecting hole, the fastening bolt passes through the first connecting hole of the first ring body located on both sides of the connection between adjacent pipe bodies, and a first fastening nut is threadedly connected to one end of the fastening bolt passing through the first connecting hole.

[0017] Furthermore, several of the reinforcing crossbars are evenly distributed around the axis of the tube.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) When installing the reinforcing ring, simply rotate the first ring and the second ring so that the inner walls of the first ring and the second ring are inserted into the groove on the same circumferential surface. Then, use the limiting device to connect the first connecting end and the second connecting end together, thereby fixing the reinforcing ring on the reinforcing crossbar. The installation is very convenient and does not require welding.

[0020] (2) The first limiting rod is connected to each of the first connecting blocks through the first limiting post, and the second limiting rod is connected to each of the second connecting blocks through the second limiting post. Then the limiting bolt passes through the first connecting hole and the second connecting hole in sequence. Then the limiting nut is threaded to the end of the limiting bolt that passes through the first connecting hole, thereby fixing the first limiting rod and the second limiting rod together.

[0021] (3) The fastening bolts and the first fastening nut connect the first ring bodies located on both sides of the adjacent pipe body connection (welding point). Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the corrosion-resistant pressure steel pipe of this utility model;

[0023] Figure 2 for Figure 1 A magnified view of a section at point I;

[0024] Figure 3 for Figure 1 Enlarged view of a section at point II;

[0025] Figure 4 A schematic diagram of the reinforced ring structure;

[0026] Figure 5 A schematic diagram of the connection structure between the pressure steel pipe and the reinforcing crossbar;

[0027] Figure 6 This is a schematic diagram of the limiting device.

[0028] In the diagram: 1. Pressure steel pipe; 2. Reinforcing crossbar; 3. Groove; 4. Reinforcing ring; 5. First ring; 6. Second ring; 7. First rotating end; 8. First connecting end; 9. Second rotating end; 10. Second connecting end; 11. First limiting rod; 12. First connecting block; 13. First through hole; 14. First limiting post; 15. Second limiting rod; 16. Second connecting block; 17. Second through hole; 18. Second limiting post; 19. Limiting bolt; 21. Second connecting hole; 22. Limiting nut; 24. Fastening bolt; 25. First connecting through hole; 26. First fastening nut. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 This utility model provides a technical solution for corrosion-resistant pressure steel pipe.

[0031] A corrosion-resistant pressure steel pipe, comprising:

[0032] Multiple pipe bodies 1 are welded together in sequence. Several reinforcing crossbars 2 are welded on the outer wall of the pipe body 1. The reinforcing crossbars 2 extend along the axial direction of the pipe body 1. Several grooves 3 are provided on the reinforcing crossbars 2. The grooves 3 are arranged in sequence along the length direction of the reinforcing crossbars 2.

[0033] The reinforcing ring 4 has its inner end inserted into a groove 3 on the same circumferential surface. The reinforcing ring 4 includes a first ring 5 and a second ring 6. The first ring 5 includes a first rotating end 7 and a first connecting end 8. The second ring 6 includes a second rotating end 9 and a second connecting end 10. The first rotating end 7 and the second rotating end 9 are rotatably connected.

[0034] A limiting device connects the first connecting end 8 and the second connecting end 10 together.

[0035] When installing the reinforcing ring 4, simply rotate the first ring 5 and the second ring 6 so that the inner walls of the first ring 5 and the second ring 6 are inserted into the groove 3 on the same circumferential surface. Then, use the limiting device to connect the first connecting end 8 and the second connecting end 10 together, thereby fixing the reinforcing ring 4 on the reinforcing crossbar 2. The installation is very convenient and does not require welding.

[0036] The following is one embodiment of the limiting device, which includes:

[0037] The first limiting rod 11 has a first connecting block 12 fixed on the first connecting end 8. The first connecting block 12 has a first through hole 13. The first limiting rod 11 has a first limiting post 14 that is inserted into the first through hole 13.

[0038] The second limiting rod 15 has a second connecting block 16 fixed on the second connecting end 10. The second connecting block 16 has a second through hole 17. The second limiting rod 15 has a second limiting post 18 that is inserted into the second through hole 17.

[0039] The limiting bolt 19 has a first connecting hole on the first limiting rod 11 and a second connecting hole 21 on the second limiting rod 15. The limiting bolt 19 passes through the first connecting hole and the second connecting hole 21 in sequence.

[0040] The limiting nut 22 is threadedly connected to one end of the limiting bolt 19 that passes through the first connecting hole.

[0041] The first limiting rod 11 is connected to each of the first connecting blocks 12 through the first limiting post 14, and the second limiting rod 15 is connected to each of the second connecting blocks 16 through the second limiting post 18. Then, the limiting bolt 19 passes through the first connecting hole and the second connecting hole 21 in sequence. Next, the limiting nut 22 is threaded to one end of the limiting bolt 19 that passes through the first connecting hole, thereby fixing the first limiting rod 11 and the second limiting rod 15 together. At this time, the first limiting rod 11 and the second limiting rod 15 connect the first connecting end 8 and the second connecting end 10 together, so that the first ring body 5 and the second ring body 6 are clamped on the reinforcing crossbar 2.

[0042] The first limiting rod 11 has two first connecting holes at both ends. The second limiting rod 15 has two second connecting holes 21 at both ends. The first connecting holes and the second connecting holes 21 correspond one-to-one. The limiting bolts 19 pass through the corresponding first connecting holes and second connecting holes 21 in sequence. The two limiting bolts 19 limit the ends of the first limiting rod 11 and the second limiting rod 15, thus better clamping the first ring 5 and the second ring 6 onto the reinforcing crossbar 2.

[0043] The corrosion-resistant pipe body 1 also includes fastening bolts 24. A first connecting hole 25 is provided on the first ring body 5. The fastening bolt 24 passes through the first connecting hole 25 on both sides of the connection point of adjacent pipe bodies 1. A first fastening nut 26 is threaded onto one end of the fastening bolt 24 passing through the first connecting hole 25. The fastening bolt 24 and the first fastening nut 26 connect the first ring bodies 5 on both sides of the connection point (weld joint) of adjacent pipe bodies 1 together, protecting the weld joint. Similarly, a first connecting hole can be provided on the second ring body, and fastening bolts and first fastening nuts can connect the two second ring bodies together.

[0044] Several reinforcing crossbars 2 are evenly distributed around the axis of the pipe body 1, which can uniformly reinforce the pipe body 1. Preferably, there are 4 reinforcing crossbars 2. The inner wall of the pipe body 1 is coated with an anti-corrosion coating to ensure the corrosion resistance of the pipe body 1.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant pressure steel pipe, characterized in that, include: Multiple tubes are welded together in sequence. Several reinforcing crossbars are welded to the outer wall of each tube. The reinforcing crossbars extend along the axial direction of the tube. Several grooves are provided on the reinforcing crossbars. The grooves are arranged in sequence along the length direction of the reinforcing crossbars. A reinforcing ring body, the inner end of which is inserted into the groove on the same circumferential surface, the reinforcing ring body includes a first ring body and a second ring body, the first ring body includes a first rotating end and a first connecting end, the second ring body includes a second rotating end and a second connecting end, and the first rotating end and the second rotating end are rotatably connected; A limiting device that connects the first connecting end and the second connecting end together.

2. The corrosion-resistant pressure steel pipe according to claim 1, characterized in that, The limiting device includes: The first limiting rod has a first connecting block fixed on the first connecting end, a first through hole on the first connecting block, and a first limiting post fixed on the first limiting rod that is inserted into the first through hole. The second limiting rod has a second connecting block fixed on the second connecting end, a second through hole on the second connecting block, and a second limiting post fixed on the second limiting rod that is inserted into the second through hole. The limiting bolt has a first connecting hole on the first limiting rod and a second connecting hole on the second limiting rod, and the limiting bolt passes through the first connecting hole and the second connecting hole in sequence; A limiting nut is threadedly connected to one end of the limiting bolt that passes through the first connecting hole.

3. The corrosion-resistant pressure steel pipe according to claim 2, characterized in that, The first limiting rod is provided with two first connecting holes, which are located at both ends of the first limiting rod. The second limiting rod is provided with two second connecting holes, which are located at both ends of the second limiting rod. The first connecting holes and the second connecting holes correspond one-to-one. The limiting bolt passes through the corresponding first connecting hole and the second connecting hole in sequence.

4. The corrosion-resistant pressure steel pipe according to claim 2, characterized in that, It also includes a fastening bolt, the first ring body is provided with a first connecting hole, the fastening bolt passes through the first connecting hole of the first ring body located on both sides of the connection of the adjacent pipe body, and the end of the fastening bolt passing through the first connecting hole is threadedly connected to a first fastening nut.

5. The corrosion-resistant pressure steel pipe according to claim 1, characterized in that, Several of the reinforcing crossbars are evenly distributed around the axis of the tube.

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