Pipeline rotation angle measuring device

Abstract

The utility model relates to a pipeline rotation angle measuring device which comprises a fixing frame, the upper end of the fixing frame is provided with an angle measuring assembly, the angle measuring assembly comprises a dial and a plumb line, the dial is assembled and connected with the fixing frame, one end of the plumb line is fixed at the center position of the dial, and the other end of the plumb line is fixed at the center position of the dial. A rolling clamping assembly is arranged at the lower end of the fixing frame, and the device is clamped at one end of the pipeline through the rolling clamping assembly and can move in the circumferential direction of the pipe wall of the pipeline; a laser generator is further arranged on the fixing frame and used for forming a linear laser mark on the surface of the pipe wall of the pipeline. The measuring device is not influenced by pipeline deformation and pipe diameter and wall thickness changes, can accurately measure the rotation angle of the pipeline, guarantees the installation quality of the pipeline, and improves the reliability and safety of the pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline preparation, and particularly relates to a pipeline rotation angle measuring device. Background Art

[0002] In the prefabrication and assembly of process pipelines in the petrochemical field and the prefabrication and assembly of public pipelines such as water supply and drainage, it is essential that branch pipe fittings need to be welded to the main pipeline, and there are often angle requirements for the assembly of the main pipeline and the branch pipe fittings. In order to prefabricate at a specified angle, the current common practice is to measure and draw lines along the outer wall of the pipeline through the arc length of the pipeline corresponding to the specified angle.

[0003] In the existing construction, it is defaulted that the pipeline is an absolute circle, and the angle control is to multiply the ratio of the specified angle to 360 degrees by the circumference of the pipeline, and then measure the arc length to reverse-position the specified angle position. For small pipes, this deviation has little impact, but for large pipes, especially large pipes with relatively thin wall thickness, due to manufacturing processes (rolling of large pipes), bumps during transportation and hoisting, and self-weight deformation, etc., the pipes have a certain degree of ovality, resulting in a certain deviation between the angle of the branch pipe fittings prefabricated by this method and the required angle, thus affecting the subsequent general assembly and assembly quality. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a pipeline rotation angle measuring device to ensure the pipeline installation quality and improve the reliability and safety of the pipeline.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A pipeline rotation angle measuring device described in the utility model includes a fixed frame, and an angle measuring component is arranged at the upper end of the fixed frame. The angle measuring component includes a scale disk and a plumb line. The scale disk is assembled and connected with the fixed frame, and one end of the plumb line is fixed at the central position of the scale disk, and the other end hangs vertically downward.

[0007] A rolling clamping component is arranged at the lower end of the fixed frame, and the device is clamped at one end of the pipeline through the rolling clamping component and can move circumferentially along the pipe wall of the pipeline.

[0008] A laser generator is also arranged on the fixed frame for forming a linear laser mark on the surface of the pipe wall of the pipeline.

[0009] Further, the rolling clamping component includes a first clamping part and a second clamping part. The first clamping part and the second clamping part are assembled at the lower end of the fixed frame with adjustable spacing, and the first clamping part and the second clamping part are arranged relatively up and down to form a clamping position.

[0010] Further, rolling elements are provided at the clamping ends of the first clamping part and the second clamping part facing each other.

[0011] Further, the rolling element is at least one of a roller, a roller shaft, and a ball.

[0012] Further, two rotating shafts are provided at the clamping ends of the first clamping part and the second clamping part. The two rotating shafts are arranged in parallel at intervals in the front-rear direction, and more than two rollers are provided on each rotating shaft.

[0013] Further, at least one of the first clamping part and the second clamping part is assembled on the fixing frame in a vertically movable manner and locked by a first locking member.

[0014] Further, the fixing frame is provided with a strip-shaped through hole which is arranged along the length direction of the fixing frame. One end of the first locking member passes through the strip-shaped through hole and then is connected to the first clamping part or the second clamping part, so that the first clamping part or the second clamping part can be assembled on the fixing frame in a vertically movable and locked manner.

[0015] Further, at least one of the first clamping part and the second clamping part is assembled on the fixing frame in a vertically movable manner and is provided with the first locking member. One end of the first locking member extends into the first clamping part or the second clamping part, and when locked, the end of this one end protrudes from the first clamping part or the second clamping part and abuts against the fixing frame.

[0016] Further, the dial is assembled on the fixing frame in a rotatable and lockable manner to realize the zero adjustment of the dial and the plumb line.

[0017] Further, a second locking member is provided on the back surface of the dial, and the dial is rotatably and lockably installed on the fixing frame through the second locking member.

[0018] Advantages of the present utility model:

[0019] With the above technical solution of the present utility model, the rotation angle of the pipeline can be accurately measured without being affected by pipeline deformation, pipe diameter, and wall thickness changes, ensuring the pipeline installation quality and improving the reliability and safety of the pipeline. Description of the drawings

[0020] Figure 1 is a schematic structural diagram of the pipeline rotation angle measuring device according to an embodiment of the present utility model;

[0021] Figure 2 is a front view structural diagram of the pipeline rotation angle measuring device according to an embodiment of the present utility model;

[0022] Figure 3 is a side view structural diagram of the pipeline rotation angle measuring device according to an embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of the use of the pipeline rotation angle measuring device described in the embodiment of the present utility model.

[0024] Explanation of reference numerals: 1, fixed frame; 2, angle measuring component; 3, scale dial; 4, plumb line; 5, rolling clamping component; 6, laser generator; 7, first clamping part; 8, second clamping part; 9, clamping position; 10, clamping end; 11, rolling element; 12, first locking part; 13, second locking part; 14, rotating shaft; 15, strip-shaped through hole; 16, pipeline. Specific embodiments

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] See Figures 1-3 A pipeline rotation angle measuring device described in an embodiment of the present utility model includes a fixed frame 1. An angle measuring component 2 is provided at the upper end of the fixed frame 1, and a rolling clamping component 5 is provided at the lower end. Among them, the angle measuring component 2 includes a scale dial 3 and a plumb line 4. The scale dial 3 is assembled and connected to the fixed frame 1. One end of the plumb line 4 is fixed at the center position of the scale dial 3, and the other end hangs vertically downward; the rolling clamping component 5 includes a first clamping part 7 and a second clamping part 8. The first clamping part 7 and the second clamping part 8 are assembled at the lower end of the fixed frame 1 with adjustable spacing. The first clamping part 7 and the second clamping part 8 are arranged opposite to each other up and down to form a clamping position 9. When in use, one end of the pipeline 16 is clamped within the clamping position 9 of the rolling clamping component 5. A laser generator 6 is further provided on the fixed frame 1 for forming a one-line laser mark on the surface of the pipeline wall of the pipeline 16.

[0027] When the pipeline rotation angle measuring device of the present utility model is in use, the rolling clamping component 5 is clamped at one end of the pipeline 16, and the measuring device can move circumferentially along the pipeline wall of the pipeline 16 through the rolling clamping component 5. At the same time, by checking the scale position of the plumb line 4 on the scale dial 3 (that is, the included angle between the plumb line 4 and the 0 scale line of the scale dial 3), the rotation angle of the pipeline can be accurately measured without being affected by pipeline deformation and changes in pipe diameter and wall thickness. It can not only assist in guiding the assembly of branch pipe fittings and the main pipeline during the pipeline prefabrication and assembly process, but also be used to detect the prefabrication and assembly quality of branch pipe fittings and the main pipeline, thereby ensuring the pipeline installation quality and improving the pipeline reliability and safety. The specific application operations are as follows:

[0028] I. Used to guide the positioning of branch pipe fittings and the main pipeline

[0029] First, place the pipeline 16 horizontally and fix it. Then, clamp the rolling clamping assembly 5 of the pipeline rotation angle measuring device on the pipe wall at one end of the pipeline 16. Next, turn on the laser emitter 6, and rotate the measuring device along the pipeline 16 to the reference point (the reference point can be the highest point, the lowest point of the pipe, or other pipe fittings already installed on the pipe) by means of the crosshair cursor a of the laser emitter 6. Finally, confirm the rotation direction of this measuring device according to the orientation of the pre-installed branch pipe fitting, and smoothly push the measuring device to rotate along the pipe wall until the included angle between the plumb line 4 and the 0 graduation line of the dial 3 reaches the required assembly angle. After that, make a mark on the pipeline 16 by means of the crosshair cursor a generated by the crosshair laser emitter 6, such as Figure 4 , and then the positioning center of the pipe fitting can be confirmed according to the axial position information of the pipe fitting.

[0030] II. Used for detecting the prefabrication and assembly quality of branch pipe fittings and main pipelines

[0031] First, place the pipeline 16 horizontally and fix it. Then, clamp the rolling clamping assembly 5 of the pipeline rotation angle measuring device on the pipe wall at one end of the pipeline 16. Next, turn on the laser emitter 6, and rotate the measuring device along the pipeline 16 to the reference point (the reference point can be the highest point, the lowest point of the pipe, or other pipe fittings already installed on the pipe) by means of the crosshair of the laser emitter 6. Finally, confirm the rotation direction of this measuring device according to the orientation of the installed branch pipe fitting, and smoothly push the device to rotate along the pipe wall until the crosshair cursor generated by the laser emitter 6 is on the center line of the branch pipe fitting. At this time, observe the included angle between the plumb line 4 and the 0 graduation line of the dial 3, and compare it with the required assembly angle to confirm whether the quality of the prefabrication and assembly is qualified.

[0032] A preferred embodiment of the present utility model, such as Figures 1-3 , rolling elements 11 are provided at the opposite clamping ends 10 of the first clamping portion 7 and the second clamping portion 8, and the rolling elements 11 are rollers. The specific structure can be: two rotating shafts 14 are provided at the clamping ends 10 of the first clamping portion 7 and the second clamping portion 8, the two rotating shafts 14 are arranged in parallel at intervals in the front-rear direction, and two or more rollers are provided on each rotating shaft 14. In this way, the smoothness and stability of the movement of the rolling clamping assembly 5 on the pipe wall of the pipeline 16 are improved by the rollers, and thus the controllability of the measuring device is enhanced.

[0033] Another preferred embodiment of the present utility model, such as Figures 1-3, the second clamping part 8 is fixedly connected to the fixing frame 1; the first clamping part 7 is assembled on the fixing frame 1 in a vertically movable and adjustable manner and is locked by a first locking member 12. Specifically, the fixing frame 1 is provided with a strip-shaped through hole 15, which is located above the second clamping part 8 and is arranged along the length direction of the fixing frame 1. The first locking member 12 can be a screw rod with an operating part (such as a quick-lock screw rod, whose operating part abuts against the fixing frame 1 when locked). One end of it passes through the strip-shaped through hole 15 and is connected to the first clamping part 7, so that the first clamping part 7 is assembled on the fixing frame 1 in a vertically movable and lockable manner. In this way, the distance between the first clamping part 7 and the second clamping part 8 can be adjusted, ensuring that when this measuring device is applied to pipes 16 with different wall thicknesses, the rolling members 11 (rollers) have good contact with the pipe wall of the pipe 16 and can slide freely and smoothly. The rolling clamping assembly 5 can move smoothly and steadily on the pipe wall of the pipe 16, and the versatility of this measuring device is strong.

[0034] A further preferred solution of the present utility model is as Figure 1 and Figure 3 , the dial 3 is assembled on the fixing frame 1 in a rotatable and lockable manner. Specifically, a second locking member 13 is provided on the back of the dial 3 and is rotatably and lockably installed on the fixing frame 1 through the second locking member 13. In this way, the zero adjustment of the dial 3 and the plumb line 4 can be realized. On the one hand, the angle measurement accuracy is improved (that is, after installing and fixing this measuring device at one end of the pipe 16 and rotating it to the reference point, first loosen the second locking member 13, rotate and adjust the dial 3 to align the plumb line 4 with the 0 scale line of the dial 3, and then tighten the second locking member 13). On the other hand, the application of this measuring device is increased and the function is more powerful. For example: using this measuring device to judge the pipe deformation degree and deformation area, evaluate the pipe deformation degree, further ensure the pipe installation quality, and improve the pipe reliability and safety. The specific operation is as follows:

[0035] First, place the pipeline 16 horizontally and fix it. Then, measure the circumference of the pipeline 16 and divide the pipeline 16 into n equal parts (n is an even number such as 4 or 8) along the circumference, and draw lines for marking. Next, clamp the rolling clamping component 5 of the pipeline rotation angle measuring device on the pipe wall at one end of the pipeline 16, and turn on and use the crosshair cursor generated by the laser emitter 6 to rotate the measuring device along the pipeline 16 to the first circumferential marking point. Then, steadily push the measuring device along the pipe wall to rotate in one direction until the crosshair cursor generated by the laser emitter 6 coincides with the next circumferential marking point. At this time, observe the difference between the angle between the plumb line 4 and the 0 scale line of the dial 3 and 360 / n and make a record. Finally, perform a zero adjustment on the dial 3, and then steadily push the measuring device along the pipe wall to rotate to the next circumferential marking point and record the angle deviation. Repeat this operation until the angles of all axial regions are measured. By referring to the angle deviation record, the deformation degree and deformation region of the pipeline can be known. The larger the angle deviation in a region, the greater the deformation of the pipeline in that region.

[0036] Certainly, for the rolling clamping component 5 of the present utility model, the first clamping part 7 can also be fixedly connected to the fixing frame 1, and the second clamping part 8 can be assembled on the fixing frame 1 in a vertically movable and adjustable manner. The specific adjustment structure can be the same as the adjustment structure of the first clamping part 7 in the embodiment; the rolling clamping component 5 can also have both the first clamping part 7 and the second clamping part 8 assembled on the fixing frame 1 in a vertically movable and adjustable manner, and the specific adjustment structure can be the same as the adjustment structure of the first clamping part 7 in the embodiment.

[0037] Moreover, the vertical movement and adjustment structure of the first clamping part 7 and the second clamping part 8 can also be: one end of the first locking member 12 extends into the first clamping part 7 or the second clamping part 8, and at the time of locking, the end of this one end extends out of the first clamping part 7 or the second clamping part 8 and abuts against the fixing frame 1.

[0038] In addition, the rolling member 11 of the rolling clamping component 5 of the present utility model can also be a roller or a ball.

[0039] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A pipeline rotation angle measuring device, characterized in that, It includes a fixing frame (1), and an angle measuring component (2) is provided at the upper end of the fixing frame (1). The angle measuring component (2) includes a dial (3) and a plumb line (4). Among them, the dial (3) is assembled and connected to the fixing frame (1), and one end of the plumb line (4) is fixed at the center position of the dial (3), and the other end hangs vertically downward. A rolling clamping component (5) is provided at the lower end of the fixing frame (1), and the device is clamped at one end of a pipeline (16) through the rolling clamping component (5) and can move circumferentially along the pipe wall of the pipeline (16). A laser generator (6) is further provided on the fixing frame (1) for forming a linear laser mark on the pipe wall surface of the pipeline (16).

2. The pipeline rotation angle measuring device according to claim 1, wherein The rolling clamping component (5) includes a first clamping part (7) and a second clamping part (8). The first clamping part (7) and the second clamping part (8) are assembled at the lower end of the fixing frame (1) with adjustable spacing. The first clamping part (7) and the second clamping part (8) are arranged oppositely up and down to form a clamping position (9).

3. The pipeline rotation angle measuring device according to claim 2, wherein Rolling members (11) are provided at the opposite clamping ends (10) of the first clamping part (7) and the second clamping part (8).

4. The pipeline rotation angle measuring device according to claim 3, wherein The rolling member (11) is at least one of a roller, a roller shaft, and a ball.

5. The pipeline rotation angle measuring device according to claim 4, characterized in that Two rotating shafts (14) are provided at the clamping ends (10) of the first clamping part (7) and the second clamping part (8). The two rotating shafts (14) are arranged in parallel at intervals in the front-rear direction, and two or more rollers are provided on each rotating shaft (14).

6. The pipeline rotation angle measuring device according to claim 2 or 3 or 4 or 5, characterized in that, At least one of the first clamping part (7) and the second clamping part (8) is assembled on the fixing frame (1) so as to be movable up and down and is locked by a first locking member (12).

7. The pipeline rotation angle measuring device according to claim 6, wherein, The fixing frame (1) is provided with a strip-shaped through hole (15). The strip-shaped through hole (15) is arranged along the length direction of the fixing frame (1). One end of the first locking member (12) passes through the strip-shaped through hole (15) and is connected to the first clamping part (7) or the second clamping part (8), so that the first clamping part (7) or the second clamping part (8) can be assembled on the fixing frame (1) movably up and down and locked.

8. The pipeline rotation angle measuring device according to claim 6, wherein, At least one of the first clamping part (7) and the second clamping part (8) is assembled on the fixing frame (1) so as to be movable up and down, and the first locking member (12) is provided. One end of the first locking member (12) extends into the first clamping part (7) or the second clamping part (8), and at the time of locking, the end of this one end protrudes from the first clamping part (7) or the second clamping part (8) and abuts against the fixing frame (1).

9. The pipeline rotation angle measuring device according to any one of claims 1-5, 7, and 8, characterized in that The dial (3) is assembled on the fixing frame (1) rotatably and lockably to realize the zero adjustment of the dial (3) and the plumb line (4).

10. The pipeline rotation angle measuring device according to claim 9, characterized in that, A second locking member (13) is provided on the back of the dial (3), and the dial (3) is rotatably and lockably installed on the fixing frame (1) through the second locking member (13).

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