Butt joint alloy steel pipe with liner structure

Abstract

The utility model relates to the technical field of butt-joint alloy steel pipes, in particular to a butt-joint alloy steel pipe with a liner structure, which comprises a steel pipe, ceramic liner blocks distributed annularly are arranged in the steel pipe; the assembling mechanism is arranged on the surface of the ceramic gasket block; the assembling mechanism comprises a mounting block fixedly connected to the end of a ceramic gasket block, a connecting ring is arranged at the end of the ceramic gasket block, the surface of the mounting block is clamped to the inner wall of the connecting ring, the inner wall of the connecting ring is rotationally connected with a positioning frame, and the surface of the positioning frame is clamped to the inner wall of the mounting block. According to the device, the multiple ceramic gasket blocks are annularly assembled on the connecting ring through the connecting ring, the mounting block and the positioning frame, the positioning frame is positioned on the connecting ring through the mounting rod, then the ceramic gasket blocks are stably mounted on the connecting ring, the ceramic gasket blocks are assembled more conveniently, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of butt alloy steel pipes, and particularly relates to a butt alloy steel pipe provided with a gasket structure. Background Art

[0002] An alloy steel pipe is a pipe made of alloy steel, usually having high strength and corrosion resistance, and is commonly used as a conveying pipe in the industrial field, such as in industries like petroleum, natural gas, and chemical engineering. In butt welding of alloy steel pipes, in order to prevent leakage at the welded joint, a gasket structure is usually used to ensure the sealing performance and integrity of the welded joint.

[0003] After retrieval, the Chinese patent "Gasket Structure and Welding Method for Butt Steel Pipes" with the authorization announcement number "CN104889530B" realizes that the spring steel ring is installed on the ceramic gasket through the ceramic gasket, screws, and spring steel ring, and then the ceramic gasket is attached to the inside of the steel pipe, ensuring that the ceramic gasket is neatly welded inside the steel pipe.

[0004] The above method of assembling the ceramic gasket into a circle through screws and spring steel rings makes the assembled ceramic gasket fit inside the steel pipe. This method increases the complexity of assembling the ceramic gasket and reduces the convenience of using the gasket structure.

[0005] Therefore, a butt alloy steel pipe provided with a gasket structure is proposed to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a butt alloy steel pipe with a gasket structure to solve the above problems and improve the problem that it is too inconvenient to assemble the ceramic gasket.

[0007] The utility model realizes the above purpose through the following technical solutions. A butt alloy steel pipe with a gasket structure includes: a steel pipe, and annularly distributed ceramic gasket blocks are arranged inside the steel pipe; an assembling mechanism, and the assembling mechanism is arranged on the surface of the ceramic gasket blocks; wherein, the assembling mechanism includes an installation block fixedly connected to the end of the ceramic gasket block, a connecting ring is arranged at the end of the ceramic gasket block, the surface of the installation block is clamped inside the inner wall of the connecting ring, a positioning frame is rotatably connected to the inner wall of the connecting ring, the surface of the positioning frame is clamped inside the inner wall of the installation block, annularly distributed installation rods are clamped inside the inner wall of the positioning frame, and the surface of the installation rods is sequentially clamped inside the inner walls of the connecting ring and one of the installation blocks. By using the connecting ring, installation block, and positioning frame, multiple ceramic gasket blocks are annularly assembled on the connecting ring. By using the installation rods, the positioning frame is positioned on the connecting ring, and further, the ceramic gasket blocks are stably installed on the connecting ring, making the assembly of the ceramic gasket blocks more convenient, time-saving, and labor-saving.

[0008] Preferably, the inner wall of the positioning frame is slidably connected with annularly distributed fixing blocks. A placement groove is formed at the front end of one of the ceramic cushion blocks. The surface of the fixing block is slidably connected to the inner wall of the placement groove. A flow hole is formed in the inner wall of the fixing block, and a plurality of liquid outlet holes are formed on both sides of the fixing block. The flow hole is communicated with the liquid outlet holes. By using the placement groove, the fixing block, the flow hole and the liquid outlet holes, the epoxy resin glue can uniformly flow into the placement groove through the flow hole and the liquid outlet holes respectively, ensuring the firm adhesion of the fixing block in the placement groove, and further ensuring the firm installation of multiple ceramic cushions in the connecting ring.

[0009] Preferably, annularly distributed concave holes are formed on the surface of the mounting rod, and the inner walls of the concave holes are sequentially clamped to the inner walls of the positioning frame, the connecting ring and one of the mounting blocks.

[0010] Preferably, the shape of the concave hole is a dovetail groove. By using the dovetail groove-shaped concave hole, the mounting rod is stably clamped in the positioning frame, the connecting ring and one of the mounting blocks, ensuring the stable clamping of the positioning frame in the mounting block.

[0011] Preferably, both the mounting rod and the fixing block are fluorosilicone rubber components.

[0012] Preferably, the lower end of the surface of the flow hole forms an angle with the horizontal plane, and the lower end of the surface of the liquid outlet hole forms an angle with the horizontal plane. By using the downwardly inclined flow hole and liquid outlet hole, it is ensured that the epoxy resin glue quickly and uniformly flows between the placement groove and the fixing block.

[0013] Preferably, the mounting block, the connecting ring and the positioning frame are all polytetrafluoroethylene components.

[0014] The beneficial effects of the present utility model are as follows:

[0015] By using the connecting ring, the mounting block and the positioning frame, multiple ceramic cushion blocks are annularly assembled on the connecting ring. By using the mounting rod, the positioning frame is positioned on the connecting ring, and further the ceramic cushion blocks are stably installed on the connecting ring, making the assembly of the ceramic cushion blocks more convenient, time-saving and labor-saving;

[0016] By using the placement groove, the fixing block, the flow hole and the liquid outlet holes, the epoxy resin glue can uniformly flow into the placement groove through the flow hole and the liquid outlet holes respectively, ensuring the firm adhesion of the fixing block in the placement groove, and further ensuring the firm installation of multiple ceramic cushions in the connecting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the assembly mechanism of the present utility model;

[0019] Figure 3 is Figure 2 an enlarged view of A in;

[0020] Figure 4 is an exploded view of the positioning frame and the mounting rod of the present utility model.

[0021] In the figure: 1, steel pipe; 2, ceramic lining pad; 3, assembly mechanism; 31, mounting block; 32, connecting ring; 33, positioning frame; 34, mounting rod; 35, concave hole; 36, fixing block; 37, placing groove; 38, flow hole; 39, liquid outlet hole. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] During specific implementation: As Figures 1-4 shown, a butt alloy steel pipe provided with a gasket structure includes: a steel pipe 1, and ceramic lining pads 2 distributed annularly are arranged inside the steel pipe 1; an assembly mechanism 3, and the assembly mechanism 3 is arranged on the surface of the ceramic lining pads 2; wherein, the assembly mechanism 3 includes a mounting block 31 fixedly connected to the end of the ceramic lining pad 2, a connecting ring 32 is arranged at the end of the ceramic lining pad 2, the surface of the mounting block 31 is clamped to the inner wall of the connecting ring 32, a positioning frame 33 is rotatably connected to the inner wall of the connecting ring 32, the surface of the positioning frame 33 is clamped to the inner wall of the mounting block 31, annularly distributed mounting rods 34 are clamped to the inner wall of the positioning frame 33, the surface of the mounting rod 34 is sequentially clamped to the inner walls of the connecting ring 32 and one of the mounting blocks 31, the mounting block 31, the connecting ring 32 and the positioning frame 33 are all polytetrafluoroethylene components, annularly distributed concave holes 35 are formed on the surface of the mounting rod 34, and the inner walls of the concave holes 35 are sequentially clamped to the inner walls of the positioning frame 33, the connecting ring 32 and one of the mounting blocks 31, and the shape of the concave holes 35 is a dovetail groove. The steel pipe 1 is an alloy component.

[0024] It should be noted that the steel pipe 1, the ceramic lining pad 2, etc. in the above description are all devices with relatively mature applications in the prior art, and specific models can be selected according to actual needs, which will not be elaborated here.

[0025] When two steel pipes 1 are butt-welded, the mounting blocks 31 on the ceramic lining pads 2 are clamped in the connecting ring 32. After the mounting blocks 31 on multiple ceramic lining pads 2 are successively clamped in the connecting ring 32, the positioning frame 33 is pushed to rotate. While the positioning frame 33 rotates, it is clamped in multiple mounting blocks 31. Then, the mounting rod 34 is pushed, so that the mounting rod 34 and the concave holes 35 in the shape of dovetail grooves are successively clamped in the positioning frame 33, the connecting ring 32 and the corresponding mounting blocks 31, making multiple ceramic lining pads 2 preliminarily fixed on the connecting ring 32. At this time, the ceramic lining pads 2 and the connecting ring 32 are placed in the steel pipe 1. Since both the connecting ring 32 and the positioning frame 33 are made of polytetrafluoroethylene components, by using the expansion and contraction tension of the connecting ring 32 and the positioning frame 33, the ceramic lining pads 2 are lined and fitted with the inner wall of the steel pipe 1, and the center line of the ceramic lining pads 2 is adjusted to coincide with the center line of the butt joint gap of the steel pipe 1. At this time, welding operation is started on the butt joint of the steel pipe 1 (the specific welding method is selected according to actual requirements and will not be elaborated here) to achieve a full and plump back weld and a neat weld appearance.

[0026] As Figure 3 shown, the inner wall of the positioning frame 33 is slidably connected with annularly distributed fixing blocks 36. A placing groove 37 is opened at the front end of one of the ceramic lining pads 2. The surface of the fixing block 36 is slidably connected to the inner wall of the placing groove 37. A flow hole 38 is opened in the inner wall of the fixing block 36. A number of liquid outlet holes 39 are opened on both sides of the fixing block 36. The flow hole 38 is communicated with the liquid outlet holes 39. The lower end surface of the flow hole 38 forms an angle with the horizontal plane, and the lower end surface of the liquid outlet hole 39 forms an angle with the horizontal plane. Both the mounting rod 34 and the fixing block 36 are made of fluorosilicone rubber components.

[0027] By pouring epoxy resin glue into the flow hole 38 (the method of injecting epoxy resin glue is selected according to actual requirements), since both the flow hole 38 and the liquid outlet holes 39 are inclined, the epoxy resin glue in the flow hole 38 quickly flows evenly into the outer surface of the fixing block 36 and the inner wall of the placing groove 37 through each liquid outlet hole 39, making the fixing block 36 firmly adhered in the placing groove 37 and fixing multiple ceramic lining pads 2 on the connecting ring 32.

[0028] When the utility model is in use, the mounting block 31 on the ceramic liner block 2 is clamped in the connecting ring 32, so that the mounting blocks 31 on the multiple ceramic liner blocks 2 are clamped in the connecting ring 32 in sequence, and then the positioning frame 33 is pushed to rotate, and the positioning frame 33 rotates and is clamped in the multiple mounting blocks 31 at the same time, and the mounting rod 34 is pushed, so that the mounting rod 34 and the concave hole 35 in the shape of a dovetail groove are clamped in the positioning frame 33, the connecting ring 32 and the corresponding mounting block 31 in sequence, so that the multiple ceramic liner blocks 2 are initially fixed on the connecting ring 32, and the epoxy resin glue is poured into the flow hole 38. Because the flow hole 38 and the liquid outlet hole 39 are both inclined, the epoxy resin glue in the flow hole 38 is quickly The liquid quickly flows evenly through each liquid outlet hole 39 to the outer surface of the fixed block 36 and the inner wall of the placement groove 37, so that the fixed block 36 is firmly adhered to the placement groove 37, and multiple ceramic liner blocks 2 are fixed on the connecting ring 32. At this time, the ceramic liner block 2 and the connecting ring 32 are placed in the steel pipe 1. Because the connecting ring 32 and the positioning frame 33 are both polytetrafluoroethylene components, the expansion and contraction tension of the connecting ring 32 and the positioning frame 33 is utilized to make the ceramic liner block 2 fit with the inner wall of the steel pipe 1, and adjust the center line of the ceramic liner block 2 to coincide with the center line of the joint gap of the steel pipe 1. At this time, the welding operation on the joint of the steel pipe 1 is started to achieve a full weld on the back and a neat appearance of the weld mark.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A butt-welding alloy steel pipe provided with a gasket structure, characterized in that, Including: A steel pipe (1), inside which there are ceramic lining pads (2) distributed annularly; An assembling mechanism (3), which is arranged on the surface of the ceramic lining pads (2); Among them, the assembling mechanism (3) includes an installation block (31) fixedly connected to the end of the ceramic lining pad (2). There is a connecting ring (32) at the end of the ceramic lining pad (2). The surface of the installation block (31) is clamped to the inner wall of the connecting ring (32). A positioning frame (33) is rotatably connected to the inner wall of the connecting ring (32). The surface of the positioning frame (33) is clamped to the inner wall of the installation block (31). Annularly distributed installation rods (34) are clamped to the inner wall of the positioning frame (33). The surface of the installation rod (34) is sequentially clamped to the inner walls of the connecting ring (32) and one of the installation blocks (31).

2. A butt alloy steel pipe provided with a gasket structure according to claim 1, characterized in that: Annularly distributed fixing blocks (36) are slidably connected to the inner wall of the positioning frame (33). A placement groove (37) is formed at the front end of one of the ceramic lining pads (2). The surface of the fixing block (36) is slidably connected to the inner wall of the placement groove (37). A flow hole (38) is formed in the inner wall of the fixing block (36). A number of liquid outlet holes (39) are formed on both sides of the fixing block (36). The flow hole (38) is communicated with the liquid outlet holes (39).

3. A butt-welding alloy steel pipe provided with a gasket structure according to claim 1, wherein: Annularly distributed concave holes (35) are formed on the surface of the installation rod (34). The inner walls of the concave holes (35) are sequentially clamped to the inner walls of the positioning frame (33), the connecting ring (32) and one of the installation blocks (31).

4. A butt alloy steel pipe provided with a gasket structure according to claim 3, characterized in that: The shape of the concave hole (35) is a dovetail groove.

5. A butt-welding alloy steel pipe provided with a gasket structure according to claim 1, characterized in that: Both the installation rod (34) and the fixing block (36) are fluorosilicone rubber components.

6. A butt-welding alloy steel pipe provided with a gasket structure according to claim 2, characterized in that: The lower end surface of the flow hole (38) forms an angle with the horizontal plane, and the lower end surface of the liquid outlet hole (39) forms an angle with the horizontal plane.

7. A butt-welding alloy steel pipe provided with a gasket structure according to claim 1, wherein: Both the installation block (31), the connecting ring (32) and the positioning frame (33) are polytetrafluoroethylene components.

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