Build-up welding device for inner wall of 90-degree bent pipe

Abstract

The utility model relates to a 90-degree elbow pipe inner wall surfacing device, and relates to the field of metal welding, the 90-degree elbow pipe inner wall surfacing device comprises a base, the base is provided with a main support and a first corner support, the upper side of the main support is provided with two sets of fixing assemblies matched with the outer side of a pipeline, and a 90-degree included angle exists between the two sets of fixing assemblies; the first corner support is located under the 90-degree connecting position of the bent pipe, the upper end face of the first corner support is provided with an abutting portion matched with the 90-degree connecting position of the bent pipe, and the base is provided with a cooling assembly connected with the first corner support. According to the 90-degree bent pipe welding device, the abutting parts of the first set of corner supports abut against the connecting positions of the 90-degree bent pipes, during welding, the first corner supports are cooled through the cooling assembly, and then the effect of cooling the connecting positions of the 90-degree bent pipes with large heat accumulation is achieved through heat conduction between the 90-degree bent pipes and the first corner supports.

Description

Technical Field

[0001] This application relates to the field of metal welding, and in particular to a surfacing device for the inner wall of a 90° elbow pipe. Background Art

[0002] At present, surfacing is a relatively common means for repairing and mending metal materials. Its principle is to clad one or several layers of other metals or alloys on the surface of the base metal to achieve specific purposes. By surfacing metals of different materials, relevant parameters such as its original surface hardness, thermal conductivity, corrosion resistance, and strength can also be changed.

[0003] Existing surfacing methods are divided into outer wall surfacing and inner wall surfacing. The difference in their operation methods lies in that when surfacing on similar parts divided into inner and outer sides such as pipes, the operation space for outer side surfacing is relatively large and the operation method is relatively simple, but outer side surfacing will affect the aesthetics of the component. Inner wall surfacing can effectively repair the inside of the pipe and form a specific functional layer. For the transportation of fluids, inner wall surfacing will also reduce the wear of the inner wall by the fluid. As a connecting pipe at the turning angle of the pipeline, the 90° elbow pipe is subject to greater impact from the fluid at its 90° connection, so the wear is much greater than that of other parts. Therefore, surfacing at the 90° connection is particularly difficult and particularly important.

[0004] Regarding the above related technologies, when surfacing is required on the inner side, due to the relatively closed space at the 90° elbow pipe, its heat dissipation is far more serious than the heat accumulation of other pipeline parts, which will cause local temperature accumulation to be too high, and then lead to negative impacts such as heat cracks, heat deformation, and a decrease in welding quality at the surfacing area. Summary of the Utility Model

[0005] In order to improve the surfacing effect on the inner wall of a 90° elbow pipe, this application provides a surfacing device for the inner wall of a 90° elbow pipe.

[0006] This application provides a surfacing device for the inner wall of a 90° elbow pipe, adopting the following technical solutions:

[0007] A surfacing device for the inner wall of a 90° elbow pipe includes a base. The base is provided with a main bracket and a first corner bracket. On the upper side of the main bracket, there are two sets of fixing components adapted to the outer side of the pipe. There is a 90° angle between the two sets of fixing components. The first corner bracket is located directly below the 90° connection of the elbow pipe. The upper end surface of the first corner bracket is provided with an abutting portion adapted to the 90° connection of the elbow pipe. The base is provided with a cooling component connected to the first corner bracket.

[0008] By adopting the above technical solution, the operator places the 90° elbow to be surfacing welded on the main bracket, places the first corner bracket below the connection of the 90° elbow, makes the abutting part of the first group of corner brackets abut against the connection of the 90° elbow. During welding, the first corner bracket is cooled by the cooling component, and then the connection of the 90° elbow with a large amount of heat accumulation is cooled by heat conduction between the 90° elbow and the first corner bracket.

[0009] Optionally, a second corner bracket is provided on the upper side of the first corner bracket. The second corner bracket is adapted to the outer wall of the 90° connection of the elbow, and the first corner bracket and the second corner bracket are detachably connected.

[0010] By adopting the above technical solution, after the placement of the 90° elbow is completed, the second corner bracket is placed above the first corner bracket, and the installation between the first corner bracket and the second corner bracket is completed through the locking component, so as to further limit and fix the connection of the 90° elbow.

[0011] Optionally, the cooling component includes a circulating water pump and a water tank. Communicating liquid flow channels are provided in the first corner bracket and the second corner bracket. The first corner bracket is provided with a water inlet communicating with the liquid flow channel, and the second corner bracket is provided with a water outlet communicating with the liquid flow channel. The water tank is fixedly connected to the base, and the circulating water pump is connected to the water tank.

[0012] By adopting the above technical solution, when surfacing welding starts, the operator turns on the circulating water pump, pumps the coolant inside the water tank into the liquid flow channel through the water inlet by the circulating water pump, exchanges heat between the coolant with a lower temperature and the welding area with a higher temperature, and then discharges the heated coolant back to the water tank through the water outlet. The coolant enters the second corner bracket from the first corner bracket, so as to uniformly cool the 90° elbow.

[0013] Optionally, the fixing component includes an upper plate and a lower plate. The sides of the upper plate and the lower plate close to each other are provided with arc surfaces adapted to the outer side of the pipeline. A fixing space for fixing the pipeline is provided between the upper plate and the lower plate. The upper plate and the lower plate are detachably connected. Both the upper plate and the lower plate are provided with air flow channels. The air flow channels include an air inlet and an air outlet. When the 90° elbow is placed on the main bracket, the air outlet points to the 90° elbow. An air compressor connected to the air inlet is provided on the base.

[0014] By adopting the above technical solution, after the 90° elbow is fixed, compressed air is introduced into the fixing component through the air compressor, and the compressed air cools the outer surface of the 90° elbow through the air outlet, effectively realizing the auxiliary cooling of the 90° elbow.

[0015] Optionally, the air outlet is provided with a wind guiding plate, which is inclined, extends along the direction away from the fixing component, and is on the side of the wind guiding plate away from the fixing component.

[0016] By adopting the above technical solution, when cooling the outer surface of the 90° elbow, the wind guiding plate guides the compressed air to the surface of the 90° elbow. And due to the inclined setting of the wind guiding plate, the air flow velocity is further increased within the same time, thereby improving the cooling speed.

[0017] Optionally, the outer side of the water tank is provided with heat dissipation fins, and the air compressor is provided with an auxiliary cooling pipeline connected to one end of the heat dissipation fins.

[0018] By adopting the above technical solution, the air compressor cools the heat dissipation fins on the outer side of the water tank, and the heat dissipation fins assist in dissipating heat from the coolant inside the water tank, so that when performing surfacing for a long time or surfacing multiple 90° elbows, the coolant can be cooled in time to keep the coolant temperature relatively stable to ensure the cooling intensity.

[0019] Optionally, a plurality of pulleys are provided on the lower side of the main bracket, and a sliding groove is provided on the base along its length direction, and the pulleys are slidably connected to the inner wall of the sliding groove.

[0020] By adopting the above technical solution, since the lengths of the two ends of the 90° elbow are different, the operator slides the main bracket along the sliding groove to adjust the distance between the main bracket and the first corner bracket, thereby realizing the placement of pipelines with different lengths.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The operator places the 90° elbow to be surfacing processed on the main bracket, places the first corner bracket below the connection of the 90° elbow, and makes the abutting part of the first group of corner brackets abut against the connection of the 90° elbow. During welding, the cooling component cools the first corner bracket, and then through heat conduction between the 90° elbow and the first corner bracket, the connection of the 90° elbow with a large amount of heat accumulation is cooled.

[0023] 2. When starting surfacing, the operator turns on the circulating water pump, pumps the coolant inside the water tank into the liquid flow channel through the circulating water pump through the water inlet, exchanges heat between the coolant at a lower temperature and the surfacing part at a higher temperature, and then discharges the heated coolant back to the water tank through the water outlet. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure with a 90° elbow.

[0025] Figure 2 is a schematic diagram of the overall structure.

[0026] Figure 3 It is a top view of the overall structure.

[0027] Figure 4 It is Figure 3 a schematic cross-sectional view taken along A-A in

[0028] Explanation of reference numerals: 101, 90° elbow; 1, base; 11, chute; 2, main bracket; 21, lower plate; 211, air inlet; 22, upper plate; 221, air outlet; 23, pulley; 3, first corner bracket; 31, water inlet; 32, second corner bracket; 33, water outlet; 4, cooling assembly; 41, water tank; 42, heat dissipation fins; 5, air deflector; 6, air compressor; 61, auxiliary cooling pipeline. Detailed implementation manners

[0029] The following further elaborates on this application in conjunction with all the attached drawings.

[0030] An embodiment of this application discloses a surfacing welding device for the inner wall of a 90° elbow 101.

[0031] Referring to Figures 1 to 4 , a surfacing welding device for the inner wall of a 90° elbow 101 includes a base 1. The base 1 is provided with a main bracket 2 and a first corner bracket 3. The upper side of the main bracket 2 is provided with a fixing assembly adapted to the outer side of the pipeline. There are two groups of fixing assemblies, and there is a 90° angle between the two groups of fixing assemblies. The first corner bracket 3 is located directly below the 90° connection of the elbow. The upper end surface of the first corner bracket 3 is provided with an abutting portion adapted to the connection of the 90° elbow 101. The base 1 is provided with a cooling assembly 4 connected to the first corner bracket 3. An operator places the 90° elbow 101 to be subjected to surfacing welding on the main bracket 2, places the first corner bracket 3 below the connection of the 90° elbow 101, abuts the abutting portion of the first group of corner brackets against the connection of the 90° elbow 101. During welding, the cooling assembly 4 cools the first corner bracket 3, and then through heat conduction between the 90° elbow 101 and the first corner bracket 3, the connection of the 90° elbow 101 with a large amount of heat accumulation is cooled.

[0032] In order to further fix and stabilize the connection of the 90° elbow 101. A second corner bracket 32 is provided on the upper side of a corner bracket. The second corner bracket 32 is adapted to the outer wall of the 90° connection of the elbow. The first corner bracket 3 and the second corner bracket 32 are detachably connected. After placing the 90° elbow 101, place the second corner bracket 32 above the first corner bracket 3, and complete the installation between the first corner bracket 3 and the second corner bracket 32 through a locking assembly, so as to further limit and fix the connection of the 90° elbow 101.

[0033] Since heat dissipation is only carried out on the connection part of the pipeline from the lower half side, the temperature of the upper and lower sides of the connection part may be uneven. The cooling assembly 4 includes a circulating water pump and a water tank 41. There are connected liquid channels in the first corner bracket 3 and the second corner bracket 32. The first corner bracket 3 is provided with a water inlet 31 communicating with the liquid channel, and the second corner bracket 32 is provided with a water outlet 33 communicating with the liquid channel. The water tank 41 is fixedly connected to the base 1, and the circulating water pump is connected to the water tank 41. When surfacing starts, the operator turns on the circulating water pump, pumps the coolant inside the water tank 41 into the liquid channel through the water inlet 31 by the circulating water pump, exchanges heat through the relatively low-temperature coolant and the relatively high-temperature surfacing part, and then discharges the heated coolant back to the water tank 41 through the water outlet 33. The coolant enters the second corner bracket 32 from the first corner bracket 3, realizing uniform cooling for the 90° elbow 101.

[0034] In order to make the second corner bracket 32 filled with coolant, the diameter of the water outlet 33 can be selectively reduced. And in order to seal the connection part between the first corner bracket 3 and the second corner bracket 32, sealing methods such as sealing rings can be selected. In this embodiment, the locking assembly is fixed by the way of a buckle and a clamping seat.

[0035] Since the workpiece position metal for surfacing has good heat conduction efficiency and the temperature can be transferred to the outer wall relatively quickly, the temperature of the outer wall of the pipeline is also relatively high. In order to cool the overall pipeline.

[0036] The fixing assembly includes an upper plate 22 and a lower plate 21. The sides of the upper plate 22 and the lower plate 21 close to each other are provided with arc surfaces adapted to the outer side of the pipeline. There is a fixing space for fixing the pipeline between the upper plate 22 and the lower plate 21. The upper plate 22 and the lower plate 21 are detachably connected. The upper plate 22 and the lower plate 21 are both provided with air channels. The air channels include an air inlet 211 and an air outlet 221. When the 90° elbow 101 is placed on the main bracket 2, the air outlet 221 points to the 90° elbow 101. The base 1 is provided with an air compressor 6 connected to the air inlet 211. After the 90° elbow 101 is fixed, compressed air is introduced into the fixing assembly through the air compressor 6, and the compressed air cools the outer surface of the 90° elbow 101 through the air outlet 221, effectively realizing auxiliary cooling for the 90° elbow 101.

[0037] The air outlet 221 is provided with a wind guiding plate 5. The wind guiding plate 5 is inclined and extends along the direction away from the fixing assembly. The side of the wind guiding plate 5 away from the fixing assembly. When cooling the outer surface of the 90° elbow 101, the wind guiding plate 5 guides the compressed air to the surface of the 90° elbow 101, and due to the inclined setting of the wind guiding plate 5, the air flow rate is further increased in the same time, thereby increasing the cooling speed.

[0038] When performing surfacing welding for a long time or surfacing welding multiple 90° elbows 101, it is necessary to cool the coolant in a timely manner to keep the coolant temperature relatively stable to ensure the cooling intensity. There are heat dissipation fins 42 on the outside of the water tank 41, and the air compressor 6 is provided with an auxiliary cooling pipeline 61 connected to one end of the heat dissipation fins 42. The air compressor 6 cools the heat dissipation fins 42 on the outside of the water tank 41, and the coolant inside the water tank 41 is assisted in heat dissipation through the heat dissipation fins 42.

[0039] Sometimes, the lengths of the two ends of the 90° elbow 101 are not the same and are not fixed either. Therefore, it is necessary to adjust the main bracket 2 to adapt to 90° elbows 101 of different lengths. There are several pulleys 23 provided on the lower side of the main bracket 2, and a chute 11 is provided on the base 1 along its length direction. The pulleys 23 are slidably connected to the inner wall of the chute 11. For the different lengths of the two ends of the 90° elbow 101, the operator slides the main bracket 2 along the chute 11 to adjust the distance between the main bracket 2 and the first corner bracket 3, thereby realizing the placement of pipelines of different lengths.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A 90° elbow (101) inner wall surfacing device, comprising a base (1), characterized in that: The base (1) is provided with a main bracket (2) and a first corner bracket (3); a fixing component adapted to the outer side of the pipeline is provided on the upper side of the main bracket (2); the first corner bracket (3) is located directly below the 90° connection of the elbow; an abutment portion adapted to the connection of the 90° elbow (101) is provided on the upper end surface of the first corner bracket (3); and the base (1) is provided with a cooling component (4) connected to the first corner bracket (3).

2. The 90° elbow (101) inner wall surfacing device according to claim 1 is characterized in that: A second corner bracket (32) is provided on the upper side of the first corner bracket (3), the second corner bracket (32) is adapted to the outer wall of the 90° connection of the curved pipe, and the first corner bracket (3) and the second corner bracket (32) are detachably connected.

3. The 90° elbow (101) inner wall surfacing device according to claim 2 is characterized in that: The cooling assembly (4) comprises a circulating water pump and a water tank (41); a first corner bracket (3) and a second corner bracket (32) are provided with a communicating liquid flow channel; the first corner bracket (3) is provided with a water inlet (31) communicating with the liquid flow channel; the second corner bracket (32) is provided with a water outlet (33) communicating with the liquid flow channel; the water tank (41) is fixedly connected to the base (1); and the circulating water pump is connected to the water tank (41).

4. The 90° elbow (101) inner wall surfacing device according to claim 3 is characterized in that: The fixing assembly comprises an upper plate (22) and a lower plate (21); a circular arc surface adapted to the outer side of the pipeline is provided on the side where the upper plate (22) and the lower plate (21) are close to each other; a fixing space for fixing the pipeline is provided between the upper plate (22) and the lower plate (21); the upper plate (22) and the lower plate (21) are detachably connected; both the upper plate (22) and the lower plate (21) are provided with an air flow channel; the air flow channel comprises an air inlet (211) and an air outlet (221); when a 90° elbow (101) is placed on the main bracket (2), the air outlet (221) points to the 90° elbow (101); and the base (1) is provided with an air compressor (6) connected to the air inlet (211).

5. The 90° elbow (101) inner wall surfacing device according to claim 4, characterized in that: The air outlet (221) is provided with an air guide plate (5), the air guide plate (5) is arranged obliquely, the air guide plate (5) extends in a direction away from the fixed component, and the air guide plate (5) is away from one side of the fixed component.

6. The 90° elbow (101) inner wall surfacing device according to claim 5, characterized in that: The water tank (41) is provided with a heat dissipation fin (42) on the outside, and the air compressor (6) is provided with an auxiliary cooling pipeline (61) connected to one end of the heat dissipation fin (42).

7. The 90° elbow (101) inner wall surfacing device according to claim 1, characterized in that: The main support (2) is provided with a plurality of pulleys (23) on the lower side, the base (1) is provided with a slide groove (11) along its length direction, and the pulley (23) is slidably connected to the inner wall of the slide groove (11).

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