A guide tool for butt welding of riser

Abstract

The utility model discloses a kind of guiding tool for vertical pipe butt welding, including by left and right two semicircular ring guiding tool through detachable connecting structure butt joint fixedly connected to form a ring guiding tool, each semicircular ring guiding tool includes two semicircular ring plates that are spaced apart and fixedly connected, four guiding vertical plates are evenly distributed in the ring guiding tool and along the circumferential direction of ring guiding tool, every guiding vertical plate is fixedly connected with the two semicircular ring plates at corresponding position, a boss is respectively arranged on the outer wall of the four guiding vertical plates, and the boss is used to support on the upper end surface of lower vertical pipe. Simple structure, easy to manufacture, and guiding vertical plate and semicircular ring plate adopt the assembly form of clamping groove, and variable diameter can be realized by adjusting the width of guiding vertical plate and the depth of clamping groove, to meet the butt joint guiding requirement of vertical pipe of different sizes.

Description

Technical Field

[0001] This utility model relates to a guiding tool, and more particularly to a guiding tool for butt welding of risers. Background Technology

[0002] Vertical pipe butt welding is widely used in practical engineering projects such as petroleum, chemical, and construction. Typically, riser butt welding is performed on-site. A crane is used to vertically lift the riser, place it above another vertically fixed riser, and slowly move it to connect the two risers at their ends before welding. In practice, connecting two risers is difficult and inefficient, and the riser sizes vary. Therefore, it is necessary to design a guiding fixture to meet the requirements for rapid connection of risers of different sizes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a guide tooling for butt welding of risers that can quickly achieve butt welding of risers.

[0004] To achieve the above functions, the technical solution adopted by this utility model is as follows:

[0005] This utility model discloses a guide fixture for butt welding of risers, comprising an annular guide fixture consisting of two semi-circular guide fixtures connected by a detachable connection structure. Each semi-circular guide fixture includes two semi-circular ring plates that are spaced apart and fixedly connected. Four guide plates are evenly distributed within the annular guide fixture and along its circumference. Each guide plate is fixedly connected to two semi-circular ring plates at a corresponding position. A boss is provided on the outer wall of each of the four guide plates, and the boss is used to support the upper end face of the lower riser.

[0006] The advantages of this utility model are: simple structure, easy to manufacture, and the guide plate and semi-circular ring plate adopt a slot assembly form, which can realize the diameter change by adjusting the width of the guide plate and the depth of the slot, so as to meet the docking guidance requirements of different sized risers. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the guide tool for butt welding of risers according to this utility model;

[0008] Figure 2 yes Figure 1 The diagram shows the assembly of the guide fixture.

[0009] Figure 3 yes Figure 1 The diagram shows the installation and use of the guide fixture. Detailed Implementation

[0010] The structure of this utility model will be described below with reference to the accompanying drawings.

[0011] As shown in the attached figure, this utility model provides a guide fixture for butt welding of risers, comprising an annular guide fixture consisting of two semi-circular guide fixtures connected by a detachable connection structure. Each semi-circular guide fixture includes two semi-circular ring plates that are spaced apart vertically and fixedly connected. A support plate (such as a riser plate) can be welded between the two semi-circular ring plates of each semi-circular guide fixture. Figure 1 The first support plate 21 and the second support plate 22 shown fix two semi-circular ring plates. Four guide plates (such as...) are evenly distributed within the annular guide fixture and along its circumference. Figure 1 The first guide plate 1, second guide plate 2, third guide plate 3, and fourth guide plate 4 shown are each fixedly connected to two semi-circular ring plates at corresponding positions. A boss (e.g., a raised platform) is provided on the outer wall of each of the four guide plates. Figure 2 The first boss 13, the second boss 14, the third boss 15, and the fourth boss 16 are shown. The bosses are used to support the upper end face 36 of the lower riser 35.

[0012] Preferably, the detachable connection structure is configured such that a slot is welded to one end of each of the two semicircular plates of the left-side semicircular guide fixture (e.g., Figure 2 As shown in the upper slot 25 and lower slot 26, plugs (such as...) are respectively provided at one end of the two semi-circular ring plates opposite the slots on the right side of the semi-circular guide fixture. Figure 2 The upper plug 27 and lower plug 28 shown are inserted into the corresponding slots and connected with bolts (e.g., ...). Figure 1 The upper connecting bolt 29 and the lower connecting bolt 30 shown pass through the connecting holes in the slot and the plug to fix the slot and the plug together. Vertical fastening plates (such as...) are welded and fixed to the other ends of the two semicircular plates of the left semicircular guide fixture and the other ends of the two semicircular plates of the right semicircular guide fixture. Figure 1 The left fastening plate 23 and the right fastening plate 24 shown are fixedly connected by multiple fastening bolts (upper fastening bolt 31, middle fastening bolt 32, and lower fastening bolt 33).

[0013] In a preferred embodiment of this utility model, the structure in which each guide plate is fixedly connected to two semi-circular ring plates at corresponding positions is as follows: two guide plate slots (e.g., spaced vertically apart) are respectively provided on the outer wall of each guide plate. Figure 2The first guide plate slot 5, the second guide plate slot 6, the third guide plate slot 7, the fourth guide plate slot 8, the fifth guide plate slot 9, the sixth guide plate slot 10, the seventh guide plate slot 11, and the eighth guide plate slot 12 are shown. A semi-circular annular plate (e.g., ...) is located at the position corresponding to each guide plate slot. Figure 2 The first semicircular ring plate 17, the second semicircular ring plate 18, the third semicircular ring plate 19, and the fourth semicircular ring plate 20 shown have a semicircular ring plate slot at their inner edges respectively. The guide plate slots are inserted into the semicircular ring plate slots one by one so that the guide plate is fixedly connected to the semicircular ring plate.

[0014] The working principle of this structure is as follows:

[0015] The left and right fastening plates 23 and 24 are fastened together by rotating bolts, and the plug and slot are also fastened by rotating bolts, thus forming a ring-shaped guide fixture. The boss of the guide plate is placed on the upper end face of the lower riser, thus hanging the entire device on the lower riser. The upper riser can then fall onto the upper end face of the lower riser along the guide plate, achieving a connection. Welding is performed between the upper end face of the lower riser and the lower end face of the upper riser between the bosses. Then, the device is removed, and the gap between the upper end face of the lower riser and the lower end face of the upper riser at the boss position is welded. To accommodate changes in riser size, the diameter can be adjusted by changing the width of the guide plate and the depth of the slot to meet the connection and guidance requirements of risers of different sizes.

Claims

1. A guide tool for butt welding of risers, characterized in that: The device includes an annular guide fixture consisting of two semi-circular guide fixtures connected by a detachable connection structure. Each semi-circular guide fixture includes two semi-circular ring plates that are spaced apart and fixedly connected. Four guide uprights are evenly distributed within the annular guide fixture and along its circumference. Each guide upright is fixedly connected to two semi-circular ring plates at a corresponding position. A boss is provided on the outer wall of each of the four guide uprights, and the boss is used to support the upper end face of the lower upright.

2. The guide fixture for butt welding of risers according to claim 1, characterized in that: The detachable connection structure is configured as follows: a slot is welded to one end of each of the two semicircular ring plates of the left semicircular guide fixture; a plug is provided at one end of each of the two semicircular ring plates of the right semicircular guide fixture opposite to the slot; the plugs are inserted into the slots one by one and the slots and the plugs are fixedly connected by connecting bolts through the connecting holes opened on the slots and plugs; and vertically arranged fastening plates are welded and fixed to the other ends of the two semicircular ring plates of the left semicircular guide fixture and the other ends of the two semicircular ring plates of the right semicircular guide fixture, and the two fastening plates are fixedly connected by multiple fastening bolts.

3. The guide fixture for butt welding of risers according to claim 1, characterized in that: The detachable connection structure is configured such that each guide plate is fixedly connected to two semicircular ring plates at corresponding positions as follows: two guide plate slots are spaced apart vertically on the outer wall of each guide plate, and a semicircular ring plate slot is opened on the inner edge of the semicircular ring plate at the position corresponding to each guide plate slot. The guide plate slots are inserted into the semicircular ring plate slots one by one to fix the guide plate to the semicircular ring plate.

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