Pipe bending device for overhauling steam turbine

Abstract

The utility model discloses a steam turbine overhaul pipe bending device which comprises a base, the top of the base is fixedly connected with two side plates, the two side plates are symmetrically distributed left and right, bending assemblies are arranged in the two side plates, and the bending assemblies are fixedly connected with the base. And the bending assembly comprises an upper plate, an electric rod, a lower plate, a handle, an upper limiting roller, an upper connecting shaft, a lower limiting roller, a lower connecting shaft and an indicator, the electric rod is fixedly connected to the bottom of the upper plate, and the lower plate is fixedly connected to the bottom of the electric rod. By arranging the upper plate, the electric rod, the lower plate, the handle, the upper limiting roller, the upper connecting shaft, the lower limiting roller and the lower connecting shaft, a pipeline is placed between the upper limiting roller and the lower limiting roller, then the handle is pulled, bending of the middle pipeline is completed, the distance between the upper limiting roller and the lower limiting roller can be changed, and therefore pipelines with different diameters can be bent; and the application range and practicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass energy power generation, in particular to a steam turbine maintenance pipe bending device. Background Art

[0002] Biomass power generation is a technology that uses biomass resources (such as wood, crop residues, urban garbage, etc.) to generate energy through combustion, fermentation or gasification for power generation. This technology can convert biomass into solid, liquid or gaseous fuels, and then generate electricity through thermal power generation technology (such as gas engines, Stirling engines, gas turbines and steam turbines, etc.). The main component of thermal power generation technology is the steam turbine, which requires steam to propel it. Steam is transported through pipelines. When the pipeline is laid on site, it needs to be bent at corners, so a pipe bending device is needed.

[0003] In existing pipe bending devices, generally only pipes with fixed diameters can be bent, and the bending angle cannot be accurate, resulting in the need for secondary bending or pipe deviation during pipe installation. Utility Model Content

[0004] The utility model aims to provide a steam turbine maintenance pipe bending device, which places the pipe between an upper limit roller and a lower limit roller, and then pulls a handle to complete the bending of the middle pipe. The distance between the upper and lower limit rollers can also be changed, so as to bend pipes of different diameters, thereby improving the application range and practicality of the device. During the bending process, accurate bending at different angles can be performed through the indicator mark on the lower plate and the scale on the side plate, thereby improving the bending accuracy.

[0005] To achieve the above-mentioned purpose, a steam turbine maintenance bending device is provided, comprising: a base, a side plate fixedly connected to the top of the base, the side plates are provided with two and are symmetrically distributed on the left and right, a bending assembly is provided inside the two side plates, the bending assembly comprises an upper plate, an electric rod, a lower plate, a handle, an upper limit roller, an upper connecting shaft, a lower limit roller, a lower connecting shaft and an indicator mark, the bottom of the upper plate is fixedly connected to the electric rod, the bottom of the electric rod is fixedly connected to the lower plate, the top of the upper plate is fixedly connected to the handle, the upper plate and the lower plate are both provided with two and are symmetrically arranged between the two side plates, an upper limit roller is provided between the two upper plates, the upper connecting shaft is fixedly connected to the left and right side walls of the upper limit roller, and the upper connecting shaft is provided with two, a lower limit roller is provided between the two lower plates, the lower connecting shaft is fixedly connected to the left and right side walls of the lower limit roller, and the lower connecting shaft is provided with two, and an indicator mark is fixedly connected to the left wall of the left lower plate.

[0006] According to the steam turbine maintenance pipe bending device, a glass plate is fixedly connected to the left side panel, the glass plate is located inside the left side panel, and a scale is fixedly connected to the left wall of the left side panel. Accurate bending at different angles can be performed through the indicator mark on the lower panel and the scale on the side panel, thereby improving the bending accuracy.

[0007] According to the steam turbine maintenance pipe bending device, the bottom of the base is fixedly connected with a support, and the number of the support is multiple and evenly distributed at the four corners of the bottom of the base, so as to support and stabilize the device.

[0008] According to the steam turbine maintenance pipe bending device, the number of the electric rods is multiple and symmetrically distributed between the upper plate and the lower plate. When the electric rods are activated, the distance between the upper plate and the lower plate can be changed, so that pipes with different diameters can be processed, thereby improving the application range and practicality of the device.

[0009] According to the steam turbine maintenance pipe bending device, the cylindrical surfaces of the upper limit roller and the lower limit roller are both arc-shaped. During the bending process, partial flat deformation of the pipe can be avoided, thereby improving the bending quality.

[0010] According to the steam turbine maintenance pipe bending device, the upper connecting shaft penetrates the upper plate, and the upper connecting shaft is rotatably connected to both the upper plate and the side plate. When bending, the upper limit roller and the lower limit roller can rotate automatically, so that bending is more convenient.

[0011] According to the turbine maintenance pipe bending device, the lower connecting shaft is rotatably connected to the lower plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting the upper plate, electric rod, lower plate, handle, upper limit roller, upper connecting shaft, lower limit roller and lower connecting shaft, the pipe is placed between the upper limit roller and the lower limit roller, and then the handle is pulled to complete the bending of the middle pipe. The distance between the upper and lower limit rollers can also be changed to bend pipes of different diameters, thereby improving the application range and practicality of the device;

[0014] 2. By setting the side panels, indicator marks, bending components, glass panels and scales, during the bending process, accurate bending at different angles can be performed through the indicator marks on the lower panel and the scales on the side panels, thereby improving the bending accuracy.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a front view of a steam turbine maintenance pipe bending device of the utility model;

[0018] Figure 2 This is a structural diagram of a bending assembly of a steam turbine maintenance pipe bending device of the utility model;

[0019] Figure 3 This is a front view of a bending assembly of a steam turbine maintenance pipe bending device according to the utility model;

[0020] Figure 4 The utility model is a front view of a pipe bending device for repairing a steam turbine.

[0021] In the figure: 1. base; 2. side panel; 3. bending assembly; 4. glass plate; 5. scale; 6. pillar; 301. upper plate; 302. electric rod; 303. lower plate; 304. handle; 305. upper limit roller; 307. upper connecting shaft; 308. lower limit roller; 310. lower connecting shaft; 311. indicator mark. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a turbine maintenance pipe bending device, comprising: a base 1, characterized in that a side panel 2 is fixedly connected to the top of the base 1, the number of the side panels 2 is two, and they are symmetrically distributed on the left and right, a bending assembly 3 is arranged inside the two side panels 2, a glass plate 4 is fixedly connected to the left side panel 2 for observing an indicator mark 311, the glass plate 4 is located inside the left side panel 2, a scale 5 is fixedly connected to the left wall of the left side panel 2, and accurate bending at different angles can be performed through the indicator mark 311 on the lower panel 303 and the scale 5 on the side panel 2, thereby improving the bending accuracy.

[0024] The bending assembly 3 includes an upper plate 301, an electric rod 302, a lower plate 303, a handle 304, an upper limit roller 305, an upper connecting shaft 307, a lower limit roller 308, a lower connecting shaft 310 and an indicator mark 311. The bottom of the upper plate 301 is fixedly connected with the electric rod 302, and the bottom of the electric rod 302 is fixedly connected with the lower plate 303. There are multiple electric rods 302, which are symmetrically distributed between the upper plate 301 and the lower plate 303. When the electric rod 302 is started, the distance between the upper plate 301 and the lower plate 303 can be changed, so that bent pipes of different diameters can be processed, thereby improving the scope of application and practicality of the device. The top of the upper plate 301 is fixedly connected with the handle 304. There are two upper plates 301 and two lower plates 303, and the left and right sides are opposite. It is arranged between the two side plates 2, an upper limit roller 305 is arranged between the two upper plates 301, an upper connecting shaft 307 is fixedly connected to the left and right side walls of the upper limit roller 305, and there are two upper connecting shafts 307, which penetrate the upper plate 301, and are rotatably connected to the upper plate 301 and the side plate 2, a lower limit roller 308 is arranged between the two lower plates 303, a lower connecting shaft 310 is fixedly connected to the left and right side walls of the lower limit roller 308, and the lower connecting shaft 310 is rotatably connected to the lower plate 303, when bending, the upper limit roller 305 and the lower limit roller 308 can be automatically rotated, so as to facilitate bending, and there are two lower connecting shafts 310, and an indicator mark 311 is fixedly connected to the left wall of the left lower plate 303.

[0025] The cylindrical surfaces of the upper limit roller 305 and the lower limit roller 308 are both arc-shaped, which can avoid partial flat deformation of the pipeline during the bending process and improve the bending quality.

[0026] The bottom of the base 1 is fixedly connected with a support column 6. There are multiple support columns 6, which are evenly distributed at the four corners of the bottom of the base 1 to support and stabilize the device.

[0027] Working principle: Place the pipe between the upper limit roller 305 and the lower limit roller 308, then pull the handle 304, the upper plate 301, the electric rod 302 and the lower plate 303 rotate together around the upper connecting shaft 307, during the rotation process, the upper limit roller 305 and the lower limit roller 308 automatically rotate and bend the middle pipe, the bending angle is judged by the indicator mark 311 on the lower plate 303 and the scale 5 on the side plate 2 to improve the bending accuracy, and the electric rod 302 can also be started to change the distance between the upper limit roller 305 and the lower limit roller 308, so as to bend pipes of different diameters.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A steam turbine maintenance pipe bending device, comprising: The base (1) is characterized in that the top of the base (1) is fixedly connected to a side plate (2), the number of the side plates (2) is two and they are symmetrically distributed on the left and right, a bending assembly (3) is arranged inside the two side plates (2), the bending assembly (3) comprises an upper plate (301), an electric rod (302), a lower plate (303), a handle (304), an upper limit roller (305), an upper connecting shaft (307), a lower limit roller (308), a lower connecting shaft (310) and an indicator mark (311), the bottom of the upper plate (301) is fixedly connected to the electric rod (302), the bottom of the electric rod (302) is fixedly connected to the lower plate (303), the top of the upper plate (301) is fixedly connected to the electric rod (302), the bottom of the electric rod (302) is fixedly connected to the lower plate (303), the top of the upper plate (301) is fixedly connected to the electric rod (302), and the bottom of the electric rod (302) is fixedly connected to the lower plate (303). A handle (304) is connected, and the number of the upper plate (301) and the number of the lower plate (303) are both two, and they are symmetrically arranged between the two side plates (2). An upper limit roller (305) is arranged between the two upper plates (301), and the left and right side walls of the upper limit roller (305) are fixedly connected with an upper connecting shaft (307), and the number of the upper connecting shaft (307) is two. A lower limit roller (308) is arranged between the two lower plates (303), and the left and right side walls of the lower limit roller (308) are fixedly connected with a lower connecting shaft (310), and the number of the lower connecting shaft (310) is two. An indicator mark (311) is fixedly connected to the left wall of the left lower plate (303).

2. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: A glass plate (4) is fixedly connected to the left side plate (2), and the glass plate (4) is located inside the left side plate (2). A scale (5) is fixedly connected to the left side wall of the left side plate (2).

3. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: The bottom of the base (1) is fixedly connected with a support column (6), and the number of the support columns (6) is multiple and evenly distributed at the four corners of the bottom of the base (1).

4. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: The number of the electric rods (302) is plural and they are symmetrically distributed between the upper plate (301) and the lower plate (303).

5. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: The cylindrical surfaces of the upper limit roller (305) and the lower limit roller (308) are both arc-shaped.

6. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: The upper connecting shaft (307) passes through the upper plate (301), and the upper connecting shaft (307) is rotatably connected to both the upper plate (301) and the side plate (2).

7. A steam turbine maintenance pipe bending device as claimed in claim 1, characterized in that: The lower connecting shaft (310) is rotatably connected to the lower plate (303).

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