Straightening equipment for pipeline

Abstract

The utility model relates to pipeline straightening equipment. The straightening equipment comprises a rack and a pipeline traction device, the rack is provided with cylindrical straightening sections with different inner diameters, and the cylindrical straightening sections comprise at least two independent straightening sections with different inner diameters or the inner parts of the cylindrical straightening sections have different inner diameters. The pipeline straightening device can fully straighten pipelines, especially small-diameter pipelines, and has the technical advantages of being high in efficiency, high in straightening precision and full in straightening.

Description

Technical Field

[0001] The present application relates to a pipeline straightening device, which is applicable to the technical field of straightening devices. Background Art

[0002] Heat exchangers have been widely used in various industries. Heat exchangers achieve heat exchange between the medium outside the pipeline and the medium inside the pipeline through the isolation of the pipeline wall. The raw materials used to manufacture heat exchangers are generally metal coils. In order to obtain straight pipes, they need to be straightened by straightening equipment so that they can be processed into the required shape and size in the later stage.

[0003] For pipes with an outer diameter greater than 4mm, due to the larger outer diameter of the pipe, it exhibits good rigidity and strength. The diameter of the pipe coil is also relatively large, generally greater than 500mm. In the process of converting metal coils into straight pipes, the coil diameter has limited effect on the straightness of the pipe. Figure 1 As shown, as long as the pipeline 1 is continuously straightened by rollers 01 arranged in the vertical direction and rollers 02 arranged in the horizontal direction, the straightness of the pipeline can be ensured. However, the diameter of the heat exchanger pipeline is currently miniaturized, and the outer diameter of the pipeline will be less than 4mm, or even reach a small diameter of about 1mm. As the outer diameter of the pipeline decreases, the rigidity of the pipeline decreases, so the diameter of the pipeline coil can also be reduced. At this time, the diameter of the pipeline coil has a significant impact on the straightness of the pipeline, and the existing roller straightening arranged in the vertical and horizontal directions is not enough to ensure the straightness of the pipeline.

[0004] like Figure 2a and 2b As shown in the figure, 03 represents the unfolded shape of the pipe coil with a large diameter, and 04 represents the unfolded shape of the pipe coil with a small diameter. Figure 1 When the rollers shown in the figure are straightened, there will be gaps between the rollers, which will result in many small curves on the pipe between the two rollers, such as Figure 2c Therefore, sufficient straightening of the pipeline cannot be achieved.

[0005] Therefore, there is a need in the prior art for a pipeline straightening device that can replace the traditional roller straightening device, so that the pipeline, especially the small-diameter pipeline, can be fully straightened. Utility Model Content

[0006] The purpose of this application is to design a pipeline straightening device, which can solve the problem that roller straightening cannot fully straighten the pipeline, can achieve full straightening of the pipeline, especially small diameter pipeline, and has the technical advantages of high efficiency, high straightening accuracy and full straightening.

[0007] The present application relates to a pipeline straightening device, comprising a frame and a pipeline traction device, wherein the frame is provided with cylindrical straightening sections with different inner diameters, wherein the cylindrical straightening section comprises at least two independent straightening sections with different inner diameters or the cylindrical straightening section has different inner diameters inside.

[0008] Among them, the traction device can be installed with a length sensor, the traction device can also be installed with a blanking device, the traction device can be provided with a clamping mechanism, and the frame can also be installed with a power drive system and a control system.

[0009] Wherein, the cylindrical straightening section may include a first straightening section and a second straightening section with two different inner diameters, the first straightening section is arranged upstream of the second straightening section, and the inner diameter of the second straightening section is smaller than the inner diameter of the first straightening section; or, the interior of the cylindrical straightening section may be a stepped type with a variable inner diameter or the inner diameter of the cylindrical straightening section presents a linear gradient change.

[0010] The present application also relates to a pipeline straightening system, comprising at least one set of straightening devices as described above.

[0011] According to a pipeline straightening device of the present application, by configuring the straightening device to include at least two independent straightening sections with different inner diameters or the cylindrical straightening section has different inner diameters, the pipeline can be straightened through the continuous space of the straightening section, thereby avoiding the problem of insufficient straightening caused by traditional roller straightening, thereby improving the accuracy and efficiency of pipeline straightening, especially small pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram showing the layout of pipeline straightening equipment in the prior art.

[0013] Figure 2a Displays the expanded shape of the tubing coil with a large diameter.

[0014] Figure 2b Shows the expanded shape of a small tubing coil diameter.

[0015] Figure 2c show Figure 1 Schematic diagram of the roller straightening effect shown in .

[0016] Figure 3 A schematic diagram showing the pipeline straightening device of the present application.

[0017] Figure 4a and 4b Schematic diagrams showing two implementation modes of the pipeline straightening device of the present application.

[0018] Figure 5 Another embodiment of the pipeline straightening device of the present application is shown. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0020] The present application proposes a pipeline straightening device, which is particularly suitable for straightening small-diameter pipelines. Through a plurality of cylindrical straightening sections with different inner diameters, the small-diameter pipelines are straightened step by step, and finally a straight pipe with the required straightness is obtained. Figure 3 As shown, according to a pipeline straightening device of the present application, there are at least two cylindrical straightening sections with different inner diameters, namely a first straightening section 2 and a second straightening section 3. The first straightening section 2 and the second straightening section 3 are mounted on a frame 4, and the first straightening section 2 is arranged upstream of the second straightening section 3. The upstream here refers to the relationship between the pipelines passing through first and second, and the straightening section that passes through first is called the upstream, and the straightening section that passes through later is called the downstream.

[0021] The pipeline 1 passes through the first straightening section 2 and the second straightening section 3 under the action of the traction device 5, and the pipeline coming out of the first straightening section 2 and the second straightening section 3 can be straightened. Preferably, the traction device 5 is equipped with a length sensor and a blanking device, and the length of the pipeline is sensed by the length sensor, and the pipeline is blanked and cut according to the preset length through the blanking device, so that the active control of the straightening length can be achieved. The frame 4 of the present application can be the basis for the installation of the first straightening section 2, the second straightening section 3 and the traction device 5, and the power drive system and control system of the straightening device can also be installed in the lower space of the frame 4.

[0022] The cylindrical straightening section described in the present application can be made of metal materials. In order to reduce the friction on the pipeline, it can also be made of high-strength organic synthetic materials, such as polytetrafluoroethylene, nylon-66, etc. The inner diameter of the cylindrical straightening section matches the straightness of the pipeline 1. When the straightness of the pipeline 1 is poor, the inner diameter of the cylindrical straightening section needs to be larger, otherwise the pipeline needs a larger traction force to pass through the cylindrical straightening section. When the straightness of the pipeline 1 is good, the inner diameter d of the cylindrical straightening section can be close to the outer diameter of the pipeline, and the cylindrical straightening section continuously reshapes and straightens the pipeline. Figure 3 In the embodiment, since the pipeline 1 has been straightened by the first straightening section 2, the straightness of the pipeline has been improved, so the inner diameter d2 of the second straightening section 3 is smaller than the inner diameter d3 of the first straightening section 2.

[0023] like Figure 4a and 4b As shown, a pipeline straightening device according to the present application has cylindrical straightening sections with different inner diameters. Figure 3 The difference between the embodiments is that cylindrical straightening sections with different inner diameters can be arranged inside a straightening device, and the cylindrical straightening sections with different inner diameters can be of variable inner diameter step type or of the type with linear gradient change of inner diameter. The traction device 5 of the present application has a clamping mechanism, which can clamp one end of the pipeline 1, and the pipeline 1 can be pulled by a mechanical power device such as a cylinder linear push, a chain line or a winch. Under the control of the length sensor, the pipeline 1 is dropped according to the required length by the dropping device.

[0024] like Figure 5 As shown, the present application can also realize the synchronous straightening of multiple pipelines 1, and multiple groups of straightening equipment are arranged on the frame 4 to form a pipeline straightening system. For example, multiple groups of first straightening sections 2 and second straightening sections 3 are arranged respectively, and multiple pipelines are pulled by the pulling device 5 at the same time to realize synchronous and rapid straightening. The straightening system of the present application can realize efficient and accurate straightening of pipelines, especially small pipelines.

[0025] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A pipeline straightening device, comprising a frame and a pipeline traction device, characterized in that: The frame is provided with cylindrical straightening sections with different inner diameters. The cylindrical straightening section includes at least two independent straightening sections with different inner diameters or the cylindrical straightening section has different inner diameters inside.

2. A pipeline straightening device according to claim 1, characterized in that: A length sensor is installed on the traction device.

3. A pipeline straightening device according to claim 2, characterized in that: The traction device is also equipped with a material dropping device.

4. A pipeline straightening device according to claim 1, characterized in that: The traction device is provided with a clamping mechanism.

5. A pipeline straightening device according to claim 1, characterized in that: A power drive system and a control system are also installed in the frame.

6. A pipeline straightening device according to any one of claims 1 to 5, characterized in that: The cylindrical straightening section comprises a first straightening section and a second straightening section with two different inner diameters. The first straightening section is arranged upstream of the second straightening section, and the inner diameter of the second straightening section is smaller than the inner diameter of the first straightening section.

7. A pipeline straightening device according to any one of claims 1 to 5, characterized in that: The interior of the cylindrical straightening section is a stepped type with a variable inner diameter, or the inner diameter of the cylindrical straightening section presents a linear gradient change.

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