Quick supporting and positioning device for automatic welding of valve

Abstract

The utility model relates to the field of steam turbines, in particular to a quick supporting and positioning device for automatic welding of a valve, which comprises a base, a centering disc, a valve and a valve supporting plate. The base is further provided with a valve supporting plate used for supporting the valve so that the valve can be kept horizontal in the axial direction. The automatic welding device has the advantages that factory digital transformation is promoted, and welding automation is assisted; the inner diameter size out-of-tolerance of the connecting pipe after the valve body is welded can be effectively controlled; the assembly operation is not limited by sites, the operation is simple, and the safety is high; redundant lacing wires do not need to be assembled and welded, working efficiency is improved, sectional materials are saved, the design structure is simple, manufacturing cost is low, the requirement for raw materials is low, the application range is wide, and rapid customization can be achieved according to the characteristics of different units.

Description

Technical Field

[0001] The utility model relates to the field of steam turbines, in particular to a rapid supporting and positioning device for automatic valve welding. Background Art

[0002] As an important part of the steam turbine body, the high-pressure valve group is composed of valves, steam inlet pipes and other components. It is heavy, the valve shape is irregular, and the coaxiality of the pipe openings is high. Automatic welding is used between the valve body and the pipe in the rotating position.

[0003] After the transition pipe and valve are welded, the inner diameter size is crucial to the subsequent steam flow. Size problems will cause great hidden dangers. Therefore, it is necessary to ensure that the inner diameter size of the pipe after welding meets the requirements of the drawing.

[0004] In the prior art, when assembling the valve and the pipe, in order to ensure the stability of the assembly process, the valve body is fixed by welding tie rods. This method has low centering efficiency and unsafe support. After adopting the present device, centering is simple, and there is no need to arrange welding tie rods. Moreover, the device can be used for a long time, avoiding quality and safety risks and improving the welding alignment quality between the valve and the pipe. Utility Model Content

[0005] The purpose of the invention of the utility model is to provide a rapid supporting and positioning device for automatic valve welding in view of the above-mentioned problems.

[0006] The technical solution adopted by the utility model is as follows: a rapid supporting and positioning device for automatic valve welding, comprising a base, a centering disk, a valve and a valve support plate, the base being provided with a centering disk for positioning the valve, and the base being also provided with a valve support plate for supporting the valve so that the valve axial direction remains horizontal.

[0007] Furthermore, the valve supporting plates are provided in plurality, and the heights of the plurality of valve supporting plates match the heights of the bottoms of the valves at corresponding positions.

[0008] Furthermore, the base is provided with a plurality of columns, and the height of the top of the columns is consistent with the height of the axis when the valve is placed on the valve supporting plate.

[0009] Furthermore, it also includes a fixed ear plate for keeping the valve radially horizontal, one end of the ear plate is welded to the radial ends of the valve, and the other end is placed on the top of the column.

[0010] Furthermore, the upright column is provided with a supporting inclined column.

[0011] Furthermore, a supporting inclined plate is provided between the column and the valve supporting plate, and the supporting inclined plate matches the side surface of the valve.

[0012] Furthermore, an opening is arranged at the bottom of the valve, and the centering plate is arranged as a protrusion matching the opening at the bottom of the valve.

[0013] Furthermore, the bottom diameter of the centering plate matches the bottom opening diameter of the valve, and the upper end is provided with a smooth inclined surface to facilitate the valve opening to be inserted into the centering plate.

[0014] Furthermore, diagonal braces and a supporting frame are arranged inside the centering plate.

[0015] Furthermore, the base is provided with a jack slot.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are: through a simple and easy-to-obtain structure, a rapid support and positioning device for automatic valve welding is provided, which promotes the digital transformation of factories and assists welding automation; it can effectively control the deviation of the inner diameter of the pipe after the valve body is installed and welded;

[0017] The assembly operation is not restricted by the site, is simple to operate and highly safe; there is no need to weld extra reinforcement bars, which improves work efficiency and saves profiles.

[0018] The design structure is simple, the manufacturing cost is low, the requirements for raw materials are low, the application range is wide, and it can be quickly customized according to the characteristics of different units. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural diagram of the utility model.

[0020] Figure 2 This is a top view of the structure of the utility model.

[0021] Figure 3 This is the structural diagram after the valve is newly placed in the utility model.

[0022] Figure 4 This is the structure diagram of the centering plate of the utility model.

[0023] Figure 5 It is a schematic diagram of the installation position of the valve and the connecting pipe of the utility model.

[0024] Markings in the figure: 1-base, 2-centering plate, 3-valve, 4-valve support plate, 5-column, 6-ear plate, 7-support inclined column, 8-support inclined plate, 9-smooth inclined surface, 10-diagonal support rod, 11-support frame, 12-pipe connection. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In this embodiment, if Figure 1 and Figure 2 As shown, it includes a base 1, a centering plate 2, a valve 3 and a valve support plate 4, the base 1 is provided with a centering plate 2 for positioning the valve 3, and the base 1 is also provided with a valve support plate 4 for supporting the valve 3 so that the valve 3 maintains axial horizontality; the base 1 is used to place the valve 3, the centering plate 2 is used to position the valve 3, and the valve support plate 4 is used to hold up the valve 3 so that the valve 3 maintains axial horizontality as a whole; in this embodiment, the supporting and positioning device is customized and produced according to the size of the valve 3, the centering plate 2 is used to position the lower end opening of the valve 3, after the valve 3 is placed on the base 1, the lower end opening corresponds to the centering plate 2, so that the plane position of the valve 3 is fixed, and correspondingly, the height of the valve support plate 4 also corresponds to the corresponding valve 3, after the valve 3 is placed, each valve support plate 4 holds up the valve 3, and the valve 3 maintains axial horizontality, which is convenient for the later installation of the alignment pipe 12.

[0028] Furthermore, multiple valve support plates 4 are provided, and the heights of the multiple valve support plates 4 match the bottom heights of the valves 3 at corresponding positions; a customized support and positioning device is adopted, and the heights of the multiple valve support plates 4 match the valves 3 at corresponding positions, so that when the valve 3 is placed on the support plate, the axial direction is kept horizontal. The provision of multiple valve support plates 4 can provide sufficient support points for the valve 3, maintain its stability, and ensure the standardization of the subsequent welding.

[0029] Furthermore, the base 1 is provided with a plurality of columns 5, the top height of the columns 5 being consistent with the axis height of the valve 3 when it is placed on the valve support plate 4; the columns 5 are provided to provide lateral protection for the valve 3, prevent it from tilting, and ensure the safety of the operator.

[0030] Furthermore, it also includes a fixed ear plate 6 for keeping the valve 3 radially level, one end of the ear plate 6 is welded to the radial ends of the valve 3, and the other end is placed on the top of the column 5; the ear plate 6 is welded to both sides of the valve 3, the two ear plates 6 are horizontal and on the same horizontal line as the axis of the valve 3 and the valve 3, the ear plate 6 is prevented from being located at the upper end of the column 5, and is used to locate the radial deflection of the valve 3, and cooperate with the valve support plate 4 to keep the valve 3 axially level and accurately correct radially, thereby ensuring welding accuracy.

[0031] Furthermore, the column 5 is provided with a supporting oblique column 7, which can provide supporting force for the column 5 to ensure that the column 5 does not deform during long-term use, thereby affecting the centering quality of the valve 3 and the welding effect.

[0032] In this embodiment, if Figure 4 As shown, a supporting inclined plate 8 is provided between the column 5 and the valve supporting plate 4. The supporting inclined plate 8 matches the side of the valve 3. The supporting inclined plate 8 can further support the valve 3. In addition to the support of the valve supporting plate 4 at the bottom and the support of the side column 5, the supporting inclined plate 8 supports the lower side of the valve 3, so that the valve 3 will not roll on the supporting positioning device, maintain its stability, and facilitate further welding with the connecting pipe 12.

[0033] In this embodiment, an opening is provided at the bottom of the valve 3, and the centering plate 2 is provided as a convex block that matches the opening at the bottom of the valve 3; the convex block is provided as a circle, and its shape matches the opening at the bottom of the valve 3. When the valve 3 is installed on the base 1, the convex block is aligned with the opening at the bottom of the valve 3 to play a positioning role. At the same time, it can also play a fixing role on the valve 3, thereby improving the stability of the valve 3 and ensuring its welding quality.

[0034] In this embodiment, if Figure 2 As shown, the bottom diameter of the centering plate 2 matches the bottom opening diameter of the valve 3, and the upper end is provided with a smooth inclined surface 9 for facilitating the valve 3 opening to be inserted into the centering plate 2. The provision of the smooth inclined surface 9 can make the valve 3 more easily inserted into the protrusion, thereby improving the fault tolerance during lifting and alignment. When the valve 3 is installed in place, it plays a positioning role, and at the same time, it can also play a fixing role on the valve 3, thereby improving the stability of the valve 3 and ensuring its welding quality.

[0035] In this embodiment, if Figure 4 As shown, the centering plate 2 is provided with diagonal support rods 10 and a support frame 11; the centering plate 2 is provided with diagonal support rods 10 and a support frame 11, which can ensure its overall strength when the valve 3 is sleeved, is not easily deformed during long-term use, improves the stability of the valve 3, and ensures its welding quality.

[0036] Furthermore, the base 1 is provided with a jack groove for placing a jack. When the jack is placed therein, its stability can be improved to prevent the risk of overturning when the valve 3 is lifted.

[0037] Embodiment 2

[0038] On the basis of the first embodiment, the ear plates 6 are arranged in multiple groups along the axial direction of the valve 3. The advantage of such arrangement is that the valve 3 can be fully positioned, so that the valve 3 can maintain axial level and radial correction accurately, thereby ensuring welding accuracy.

[0039] In summary, if Figure 3 and Figure 5As shown, when using the supporting and positioning device, according to the corresponding valve 3 model, select the corresponding supporting and positioning device, after fixing the supporting and positioning device, weld the ear plate 6 to the side of the valve 3, hoist the valve 3 to the base 1 of the supporting and positioning device, and insert the centering plate 2 into the bottom opening of the valve 3; put the jack in the jack slot, and level it by padding the valve support plate 4 with gaskets, etc.; after leveling, use the reinforcement sheet to spot weld the valve body to avoid displacement of the valve body during assembly; connect the pipe 12 to the valve body by lifting; check other dimensions, and fix the pipe 12 by spot welding after meeting the requirements of the drawing; then turn to the automatic welding station for automatic welding.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick support and positioning device for automatic valve welding. Features: The invention comprises a base (1), a centering plate (2), a valve (3) and a valve support plate (4), wherein the base (1) is provided with a centering plate (2) for positioning the valve (3), and the base (1) is also provided with a valve support plate (4) for supporting the valve (3) so that the valve (3) is kept horizontal in its axial direction; The base (1) is provided with a plurality of columns (5), and the top height of the columns (5) is consistent with the axis height of the valve (3) when it is placed on the valve support plate (4); It also includes a fixed ear plate (6) for keeping the valve (3) radially horizontal. One end of the ear plate (6) is welded to the two radial ends of the valve (3), and the other end is placed on the top of the column (5).

2. A rapid support and positioning device for automatic valve welding as claimed in claim 1, Features: The valve supporting plates (4) are arranged in plurality, and the heights of the plurality of valve supporting plates (4) match the bottom heights of the valves (3) at corresponding positions.

3. A rapid support and positioning device for automatic valve welding as claimed in claim 1, Features: The upright column (5) is provided with a supporting inclined column (7).

4. A rapid support and positioning device for automatic valve welding as claimed in claim 1, Features: A supporting inclined plate (8) is provided between the upright column (5) and the valve supporting plate (4), and the supporting inclined plate (8) matches the side surface of the valve (3).

5. A rapid support and positioning device for automatic valve welding as claimed in claim 1, Features: The bottom of the valve (3) is provided with an opening, and the centering disk (2) is provided as a convex block matching the bottom opening of the valve (3).

6. A rapid support and positioning device for automatic valve welding as claimed in claim 5, Features: The bottom diameter of the centering plate (2) matches the bottom opening diameter of the valve (3), and the upper end is provided with a smooth inclined surface (9) for facilitating the valve (3) opening to be inserted into the centering plate (2).

7. A rapid support and positioning device for automatic valve welding as claimed in claim 5, Features: The centering plate (2) is provided with diagonal support rods (10) and a support frame (11) inside.

8. A rapid support and positioning device for automatic valve welding as claimed in claim 1, Features: The base (1) is provided with a jack slot.

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