A large diameter circular pipe positioning and centering device

Abstract

The utility model relates to the field of large diameter circular pipe installation and measurement technology, specifically a large diameter circular pipe positioning and centering device, including a ruler, a prism mark, and a tube level bubble; the ruler is made of aluminum alloy, with a hole at the center axis for fixing the prism mark, and a groove on the side for fixing the tube level bubble; the prism mark is made of stainless steel, vertically inserted into the aluminum alloy ruler, and used to place the prism; the tube level bubble is embedded in the aluminum alloy ruler, and is used to adjust the horizontality of the centering device. The utility model has a simple structure and is easy to operate, solves the positioning and centering problems of large diameter circular pipe installation, and improves measurement efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of large-diameter circular pipeline installation and measurement, in particular to a large-diameter circular pipeline positioning and centering device, which is suitable for positioning and centering various large-diameter circular pipelines. Background Art

[0002] With the rapid development of pipeline installation technology, the requirements for the positioning accuracy of the pipeline centerline during pipeline installation are becoming increasingly higher.

[0003] During the pipeline installation process, the measurement of the pipeline centerline is a routine measurement item for pipeline installation positioning, and is also one of the necessary measurement items for pipeline completion measurement. For small-diameter pipeline installation, the centering can be done by traditional steel ruler combined with angle ruler, but the centering speed is slow and inconvenient to operate; this is even more true for large-diameter pipelines, which are more difficult to center using traditional measurement methods. It is not only time-consuming and labor-intensive, but also has low centering accuracy, which affects the efficiency and accuracy of on-site measurement.

[0004] Therefore, how to improve the centering efficiency and centering accuracy of large diameter circular pipes is an urgent problem to be solved in this field. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model proposes a large-diameter circular pipe positioning and centering device, which overcomes the problems existing in the conventional circular pipe centering method and improves the working efficiency and centering accuracy.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A large diameter circular pipe positioning and centering device, comprising a ruler, a pipe level bubble, and a prism mark;

[0008] The prism mark is installed at the length bisector position on the upper part of the ruler, and the prism mark is perpendicular to the ruler;

[0009] The prism is installed on the prism mark, and the plane coordinates and elevation of the prism are measured by the total station to obtain the position of the circular pipeline axis;

[0010] The level bubble is installed on the length bisector position on the side of the ruler.

[0011] As a further preferred solution, the bottom of the ruler is a rubber anti-slip layer.

[0012] As a further preferred solution, counterweights of the same weight are installed at both ends of the ruler.

[0013] As a further preferred solution, an arc-shaped protective frame is provided between the counterweights at both ends of the ruler. The protective frame is made of a tough material and is located above the ruler. The prism is located in the arc-shaped protective frame.

[0014] The protection frame area above the prism is a circular cover structure larger than the prism, and ventilation holes are opened on the circular cover structure.

[0015] As a further preferred solution, the length, width and height of the ruler are 50cm*4cm*2cm, and the ruler is made of aluminum alloy;

[0016] There is a φ14mm round hole in the center of the length bisector on the upper part of the ruler for installing the prism mark;

[0017] There is a 5cm*0.5cm*2cm groove on the length dividing line on the side of the ruler for installing the tube level bubble.

[0018] As a further preferred solution, the prism is made of φ14mm stainless steel and has a length of 8cm.

[0019] As a further preferred solution, there are two level bubbles in total, which are embedded in both sides of the ruler.

[0020] As a further preferred solution, the bubble in the leveling tube is strip-shaped and parallel to the ruler.

[0021] As a further preferred solution, the bubble in the tube level is an elliptical structure and is horizontally installed on the side of the ruler. Beneficial Effects

[0022] The utility model provides a large-diameter circular pipe positioning and centering device, which has a simple structure, convenient measurement, and easy operation. It can quickly center the pipe by leveling the bubble on the pipe fixed on the aluminum alloy ruler, thus overcoming the problems of inconvenient operation and low precision of traditional steel ruler centering. The utility model can be widely used in large-diameter pipe installation, positioning, and measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the utility model on a pipeline;

[0024] Figure 2 It is a top view of the device of the utility model;

[0025] Figure 3 It is a top view of the protection frame;

[0026] Figure 4 This is a schematic diagram for calculating the elevation of the pipeline axis;

[0027] Figure markings: 1. Ruler; 2. Level bubble; 3. Prism mark; 4. Rubber anti-slip layer; 5. Protective frame; 6. Counterweight; 7. Ventilation hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] like Figure 1 , 2 As shown, a large diameter circular pipe positioning and centering device includes a ruler 1, a prism mark 3, and a tube level bubble 2.

[0030] The ruler 1 is an aluminum alloy ruler with a size of 50cm*4cm*2cm. A φ14mm circular hole is opened on the central axis of the ruler 1 for fixing a prism mark 3. The prism elevation H2 is measured by a total station (an instrument that can measure three-dimensional coordinates) to obtain the center elevation of the circular pipe.

[0031] 5cm*0.5cm*2cm grooves are provided on both sides of the central axis of the ruler 1 for fixing the level bubble 2.

[0032] The prism mark 3 is made of φ14 mm stainless steel and has a length of 8 cm. It is vertically inserted into the aluminum alloy ruler 1 in the reserved hole and is used to place the prism.

[0033] There are two level bubbles 2, which are embedded in both sides of the aluminum alloy ruler 1 and are used to adjust the level of the centering device.

[0034] The bottom of the ruler 1 is provided with a rubber anti-skid layer 4 to prevent the round pipe from falling due to the round pipe surface being too smooth or the pipe being placed unbalanced by humans.

[0035] Counterweights 6 of the same weight are installed at both ends of the ruler 1 to prevent the ruler 1 from being continuously tilted due to the strong wind in an outdoor windy environment, thereby affecting the measurement accuracy.

[0036] The counterweight 6 is detachable.

[0037] Furthermore, an arc-shaped protective frame 5 is provided between the counterweight blocks 6 at both ends of the ruler 1. The protective frame 5 is made of a tough material, is detachable, and is located above the ruler 1. The prism is located in the arc-shaped protective frame 5. The area of ​​the protective frame 5 above the prism is a circular cover structure larger than the prism. When the centering device falls, the protective frame 5 can protect the internal prism to avoid damage from bumps, and the counterweight blocks 6 at both ends can also protect the ends of the ruler 1.

[0038] A ventilation hole 7 is provided on the circular cover structure. Since the circular cover structure has a large area, in order to avoid the influence of strong wind outdoors, which may affect the measurement balance, the ventilation hole 7 is provided to reduce the influence.

[0039] The working process of this embodiment:

[0040] (1) Place a circular pipe positioning and centering device on the pipe: adjust the ruler to a horizontal state using the pipe level bubble;

[0041] (2) Install a prism on the centering device: when the bubble of the tube level is horizontal, the position of the prism is the position of the plane axis of the pipeline;

[0042] (3) Measure the distance H1 from the center of the prism to the bottom of the ruler, the radius of the pipe is R, and the elevation of the prism point is H2. Then the elevation of the pipeline axis at this point is H=H2-H1-R.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large diameter circular pipe positioning and centering device, characterized in that: It includes a ruler (1), a bubble of a tube level (2), and a prism mark (3); The prism mark (3) is installed at the length bisector position of the upper part of the ruler (1), and the prism mark (3) is perpendicular to the ruler (1); The prism is mounted on the prism mark (3), and the plane coordinates and elevation of the prism are measured by a total station, thereby obtaining the position of the circular pipeline axis; The tube level bubble (2) is installed at the length bisector position on the side of the ruler (1).

2. A large diameter circular pipe positioning and centering device according to claim 1, characterized in that: The bottom of the ruler (1) is a rubber anti-slip layer (4).

3. A large diameter circular pipe positioning and centering device according to claim 2, characterized in that: Counterweight blocks (6) of the same weight are installed at both ends of the ruler (1).

4. A large diameter circular pipe positioning and centering device according to claim 3, characterized in that: An arc-shaped protective frame (5) is provided between the counterweights (6) at both ends of the ruler (1). The protective frame (5) is made of a tough material and is located above the ruler (1). The prism is located inside the arc-shaped protective frame (5); The protective frame (5) area above the prism is a circular cover structure that is larger than the prism, and a ventilation hole (7) is provided on the circular cover structure.

5. A large diameter circular pipe positioning and centering device according to claim 1 or 4, characterized in that: The length, width and height of the ruler (1) are 50 cm*4 cm*2 cm, and the ruler (1) is made of aluminum alloy; A φ14 mm circular hole is provided at the center of the length bisector of the upper portion of the ruler (1) for mounting a prism mark (3); A 5cm*0.5cm*2cm groove is provided at the length dividing line position on the side of the ruler (1) for mounting a tube level bubble (2).

6. A large diameter circular pipe positioning and centering device according to claim 1 or 4, characterized in that: The prism mark (3) is made of φ14 mm stainless steel and has a length of 8 cm.

7. A large diameter circular pipe positioning and centering device according to claim 1 or 4, characterized in that: There are two level bubbles (2) in total, which are embedded in both sides of the ruler (1).

8. A large diameter circular pipe positioning and centering device according to claim 1 or 4, characterized in that: The tube level bubble (2) is strip-shaped and parallel to the ruler (1).

9. A large diameter circular pipe positioning and centering device according to claim 1 or 4, characterized in that: The tube level bubble (2) is an elliptical structure and is horizontally mounted on the side of the ruler (1).

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