Hydraulic repairing device for thin-walled pipe

Abstract

The utility model relates to the technical field of thin-walled tube repair, and discloses a thin-walled tube hydraulic repair device which comprises a repair oil cylinder, a hydraulic oil tank and a hydraulic pump, the input end of the hydraulic pump is communicated with the hydraulic oil tank, the output end of the hydraulic pump is provided with an overflow valve, and the output end of the overflow valve is communicated with a reversing valve. The output end of the reversing valve is connected with a repairing oil cylinder, and the output end of the repairing oil cylinder is fixedly connected with a repairing block. A first oil return pipeline is communicated between the overflow valve and the hydraulic oil tank; the reversing valve is a manual reversing valve or an automatic reversing valve; the repairing oil cylinder comprises a rod cavity connector and a rodless cavity connector, two output connectors on the reversing valve are communicated with the rod cavity connector and the rodless cavity connector through pipelines respectively, and a second oil return pipeline is communicated between the reversing valve and the hydraulic oil tank. The hydraulic repair device for the thin-walled pipe has the advantages of being capable of meeting the repair requirements of deformed steel pipes with different diameters and different depths and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of thin-walled pipe repair, in particular to a hydraulic repair device for thin-walled pipes. Background Art

[0002] Thin-walled tubes are made by perforating steel ingots or solid tubes into rough tubes, and then hot-rolling, cold-rolling or cold-drawing. Thin-walled tubes play an important role in my country's steel pipe industry. The raw material of thin-walled tubes is round tube billets. The round tube billets are cut by a cutting machine into billets with a length of about one meter and sent to the furnace for heating via a conveyor belt.

[0003] The thin-walled pipe hydraulic repair device is designed and developed by comprehensively considering the parts repair process requirements and combining the current commonly used thin-walled pipe repair technology. It is a device that repairs thin-walled pipes in a non-heating state, which can reduce the rework rate of thin-walled pipes during the maintenance process.

[0004] However, at present, there is a lack of effective and reliable repair tooling equipment for the maintenance of such parts, which cannot meet the repair needs. In the past, when similar problems occurred, the method of replacing parts for repair was adopted, which caused a lot of financial and material resources to be wasted and was inconvenient to use. Therefore, a thin-walled pipe hydraulic repair device was proposed to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides a hydraulic repair device for thin-walled pipes, which has the advantages of being able to meet the repair needs of deformed steel pipes of different diameters and depths. It solves the problem that the repair of such parts currently lacks effective and reliable repair tooling and equipment, which cannot meet the repair needs. In the past, similar problems occurred and the method of replacing parts for repair was adopted, which caused a lot of financial and material resources to be wasted and was inconvenient to use.

[0007] (2) Technical solution

[0008] The technical solution of the utility model for solving the above technical problems is as follows: a thin-walled pipe hydraulic repair device, including a repair cylinder, a hydraulic oil tank and a hydraulic pump, the input end of the hydraulic pump is connected to the hydraulic oil tank, the output end of the hydraulic pump is provided with a relief valve, the output end of the relief valve is connected to a reversing valve, the output end of the reversing valve is connected to the repair cylinder, and the output end of the repair cylinder is fixedly connected to a repair block.

[0009] The beneficial effects of the utility model are:

[0010] The thin-walled pipe hydraulic repair device has the advantage of being able to meet the repair needs of deformed steel pipes of different diameters and depths.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, a first oil return pipeline is connected between the overflow valve and the hydraulic oil tank.

[0013] The beneficial effect of adopting the above further scheme is that when the overall hydraulic oil pressure of the device is overloaded, opening the overflow valve can return the excess hydraulic oil to the hydraulic oil tank to ensure the pressure Henry of the hydraulic pump and stabilize the overall oil pressure of the device.

[0014] Furthermore, the reversing valve is a manual reversing valve or an automatic reversing valve.

[0015] Furthermore, the repair cylinder includes a rod chamber interface and a rodless chamber interface, the two output interfaces on the reversing valve are respectively connected to the rod chamber interface and the rodless chamber interface through pipelines, and a second return oil pipeline is connected between the reversing valve and the hydraulic oil tank.

[0016] Furthermore, the bottom end of the repair cylinder is fixedly connected to a connecting block, the outer side of the connecting block is rotatably connected to a hinge support, and the bottom end of the hinge support is fixedly connected to an arc block; the arc block is also fixedly connected to a connecting frame, and a displacement drag rod is provided on the side of the connecting frame away from the repair cylinder.

[0017] The arc block can limit the position of the bottom end of the repair cylinder in the chassis, and the displacement drag rod can move the repair cylinder left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is the connection diagram of the connecting block and hinge support of the utility model;

[0020] Figure 3 This is a structural flow chart of the utility model;

[0021] Figure 4 This is the principle diagram of the hydraulic system of this utility model.

[0022] In the figure: 1. Repair cylinder; 2. Hydraulic oil tank; 3. Hydraulic pump; 4. Overflow valve; 5. Reversing valve; 7. First oil return line; 8. Second oil return line; 9. Connecting block; 10. Hinge support; 11. Connecting frame; 12. Displacement drag rod; 13. Repair block; 14. Arc block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the embodiment, Figure 1-4 A thin-walled pipe hydraulic repair device is provided, comprising a repair cylinder 1, a hydraulic oil tank 2 and a hydraulic pump 3. The input end of the hydraulic pump 3 is connected to the hydraulic oil tank 2, and the output end of the hydraulic pump 3 is provided with a relief valve 4. The output end of the relief valve 4 is connected to a reversing valve 5. The output end of the reversing valve 5 is connected to the repair cylinder 1, and the output end of the repair cylinder 1 is fixedly connected to a repair block 13.

[0025] A first oil return pipeline 7 is connected between the overflow valve 4 and the hydraulic oil tank 2 .

[0026] When the pressure of the entire hydraulic oil of the device is overloaded, the overflow valve 4 can be opened to return the excess hydraulic oil to the hydraulic oil tank 2 to ensure that the pressure of the hydraulic pump 3 is constant and stabilize the oil pressure of the entire device.

[0027] The reversing valve 5 is a manual reversing valve or an automatic reversing valve.

[0028] Among them, the repair cylinder 1 includes a rod chamber interface and a rodless chamber interface, the two output interfaces on the reversing valve 5 are respectively connected to the rod chamber interface and the rodless chamber interface through pipelines, and a second return oil pipeline 8 is connected between the reversing valve 5 and the hydraulic oil tank 2.

[0029] Among them, the bottom end of the repair cylinder 1 is fixedly connected to a connecting block 9, the outer side of the connecting block 9 is rotatably connected to a hinge support 10, and the bottom end of the hinge support 10 is fixedly connected to an arc block 14; the arc block 14 is also fixedly connected to a connecting frame 11, and a displacement drag rod 12 is provided on the side of the connecting frame 11 away from the repair cylinder 1.

[0030] The arc block 14 can limit the position of the bottom end of the repair cylinder 1 in the chassis, and the displacement drag rod 12 can move the repair cylinder 1 left and right.

[0031] It also includes a winding motor, a winding drum and a connecting rope. The outer side of the winding drum is fixedly connected to the outer side of the output shaft of the winding motor, the outer side of the winding drum is fixedly connected to one end of the outer side of the connecting rope, and the other end of the connecting rope is fixedly connected to the displacement drag rod 12. Then, the winding motor can be used to make the displacement drag rod 12 drive the repair cylinder 1 to move left and right.

[0032] Working principle:

[0033] Before starting the repair work, first rotate the deformed part of the pipe to be repaired to the highest point, then place the repair cylinder 1 vertically in the pipe to be repaired, use the displacement drag rod 12 to drag the repair cylinder 1 to the deformation point, and let the second return oil pipeline 8 supply oil, so that the repair cylinder 1 will lift the deformed part of the pipe to be repaired, and use the copper rod to knock on the outside of the pipe to be repaired. After the shaping is completed, maintain the pressure for more than six hours to achieve the purpose of shaping and repair.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin-walled pipe hydraulic repair device, comprising a repair cylinder (1), a hydraulic oil tank (2) and a hydraulic pump (3), characterized in that: The input end of the hydraulic pump (3) is connected to the hydraulic oil tank (2), the output end of the hydraulic pump (3) is provided with a relief valve (4), the output end of the relief valve (4) is connected to a reversing valve (5), the output end of the reversing valve (5) is connected to the repair cylinder (1), and the output end of the repair cylinder (1) is fixedly connected to a repair block (13).

2. The thin-walled pipe hydraulic repair device according to claim 1, characterized in that: A first oil return pipeline (7) is connected between the overflow valve (4) and the hydraulic oil tank (2).

3. The thin-walled pipe hydraulic repair device according to claim 1, characterized in that: The reversing valve (5) is a manual reversing valve or an automatic reversing valve.

4. The thin-walled pipe hydraulic repair device according to claim 1, characterized in that: The repair oil cylinder (1) includes a rod chamber interface and a rodless chamber interface, the two output interfaces on the reversing valve (5) are respectively connected to the rod chamber interface and the rodless chamber interface via pipelines, and a second oil return pipeline (8) is connected between the reversing valve (5) and the hydraulic oil tank (2).

5. The thin-walled pipe hydraulic repair device according to claim 1, characterized in that: The bottom end of the repair oil cylinder (1) is fixedly connected to a connecting block (9), the outer side of the connecting block (9) is rotatably connected to a hinge support (10), and the bottom end of the hinge support (10) is fixedly connected to an arc block (14).

6. The thin-walled pipe hydraulic repair device according to claim 5, characterized in that: The arc block (14) is also fixedly connected to a connecting frame (11), and a displacement drag rod (12) is provided on the connecting frame (11) at a side away from the repair oil cylinder (1).

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