A cooling device for repairing a superalloy casting

Abstract

The application belongs to the field of cooling devices, and particularly relates to a high-temperature alloy casting welding cooling device, which comprises a stainless steel water tank, a casting fixing seat is arranged on the inner bottom surface of the stainless steel water tank, and an overflow port is arranged on the side wall of the stainless steel water tank; two circulating water pipes are symmetrically arranged on the two sides of the stainless steel water tank, the two ends of the circulating water pipes are communicated with the inside of the stainless steel water tank, the middle part of the circulating water pipe is arranged in an arc shape, and a water pump is arranged at the communication position of the circulating water pipe and the stainless steel water tank. The application uses liquid water as a heat conduction medium, can quickly and uniformly cool the welding area, and can take away the heat generated by welding, so that the cracks caused by the large temperature difference between the welding area and the casting body are reduced or even eliminated, and the welding quality and working efficiency of the high-temperature alloy casting are ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of cooling devices, and particularly relates to a high-temperature alloy casting welding cooling device. BACKGROUND

[0002] The high-temperature alloy casting is poor in heat conductivity due to the material structure, local heating in the welding area, slow heat dissipation, and a large temperature difference between the welding area and the casting body, thereby easily causing cracks in the welding area.

[0003] The existing high-temperature alloy casting welding does not have a special cooling device, is carried out at room temperature, and the high temperature of the casting welding area is only cooled through air medium, so that the heat in the welding area is difficult to quickly dissipate, thereby causing cracks in the welding area and affecting the strength and quality of the alloy casting. SUMMARY

[0004] The application aims at the problems in the background and provides a high-temperature alloy casting welding cooling device.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a high-temperature alloy casting welding cooling device, comprising:

[0006] A stainless steel tank, a casting fixing seat is installed on the inner bottom surface of the stainless steel tank, and an overflow port is formed on the side wall of the stainless steel tank;

[0007] Two circulating water pipes, the two circulating water pipes are symmetrically arranged on the two sides of the stainless steel tank, the two ends of the circulating water pipes are in communication with the inside of the stainless steel tank, the middle part of the circulating water pipe is in an arc-shaped curved shape, and a water pump is installed at the communication position of the circulating water pipe and the stainless steel tank;

[0008] A heat dissipation rotating wheel, the heat dissipation rotating wheel is arranged at the arc-shaped curved position of the circulating water pipe, the heat dissipation rotating wheel comprises an installation plate fixed on the side wall of the stainless steel tank, a rotating shaft is rotatably connected to the installation plate, three sealing cylinders arranged in a ring array are fixed on the rotating shaft, heat dissipation plates are fixed on the three sealing cylinders, the heat dissipation plates are in an arc-shaped structure matched with the arc-shaped curved part of the circulating water pipe, and a heat-driven gravity center adjusting assembly is arranged in the sealing cylinder.

[0009] Further, the heat-driven gravity center adjusting assembly comprises a counterweight block sealingly and slidably connected to the inner side of the sealing cylinder, and a thermal expansion and contraction medium is filled in the sealed space formed by the counterweight block close to the stainless steel tank and the sealing cylinder.

[0010] Further, the side wall of the sealing cylinder is embedded with a first electric contact piece and a second electric contact piece, the first electric contact piece and the second electric contact piece are opposite and do not contact each other, the first electric contact piece is electrically connected with an external power supply, the second electric contact piece is electrically connected with a water pump, the thermal expansion and contraction medium adopts mercury, when the thermal expansion and contraction medium is heated and expanded and contacts the first electric contact piece and the second electric contact piece, the circuit between the first electric contact piece and the second electric contact piece is communicated, so that the purpose of automatically turning on and off the water pump circuit is realized.

[0011] Further, the inner side wall of the stainless steel sink on both sides is hinged with a flow guide plate, and the two flow guide plates are arranged in parallel.

[0012] Further, a disc is coaxially fixed on the rotating shaft, a pin shaft is fixed on the surface of the disc, a movable frame is sleeved on the pin shaft, a push-pull rod is fixed on the movable frame, a through hole is formed in the side wall of the stainless steel sink for the push-pull rod to penetrate, and one end of the push-pull rod in the stainless steel sink is hinged to the surface of the flow guide plate through a hinge.

[0013] Further, two sliding sleeves are fixed on the circulating water pipe, rotating rods are rotatably connected in the sliding sleeves, one section of the rotating rod extends into the circulating water pipe and is fixed with a water wheel, the other end of the rotating rod is fixed with a rotating disc, and brush hairs are uniformly distributed on the circumferential wall of the rotating disc.

[0014] Further, a hydraulic cylinder is installed in the casting fixing seat, and a lifting platform is fixed to the output end of the hydraulic cylinder.

[0015] Further, a thermometer is fixed on the side wall of the stainless steel sink.

[0016] Compared with the prior art, the high-temperature alloy casting repair cooling device has the following advantages:

[0017] 1. The stainless steel sink, the water pump and the circulating water pipe are arranged, liquid water is used as a heat conduction medium, the welding repair area can be quickly and uniformly cooled, and the heat generated by welding repair can be taken away, so that cracks caused by the large temperature difference between the welding repair area and the casting body are reduced or even eliminated, the welding repair quality and working efficiency of the high-temperature alloy casting are ensured, the hydraulic cylinder is arranged, the position of the welding repair area is adjusted, and the device is suitable for welding repair and repair of various castings.

[0018] 2、The present application is provided with a heat dissipation runner, a counterweight and a thermal expansion and contraction medium, when the water temperature is high, the heat is transferred to the heat dissipation plate and the sealing cylinder close to the circulating water pipe, the thermal expansion and contraction medium in the sealing cylinder is heated and expanded, and then pushes the counterweight to move, so that the center of gravity of the heat dissipation runner is offset, and then rotates by a certain angle, so that the heat dissipation plate rotates to the upper position and is separated from the surface of the circulating water pipe, the heat dissipation plate can quickly dissipate heat to the air, at this time, the adjacent heat dissipation plate rotates to the position close to the circulating water pipe, and automatically rotates to separate after absorbing the heat of the circulating water pipe again, so as to realize the intermittent rotation of the heat dissipation plate, and quickly dissipate the heat of the water in the circulating water pipe to the air, effectively reduce the temperature of the liquid water, and improve the cooling effect.

[0019] 3、The present application is provided with a water wheel, a rotating rod and a rotating disc, which is driven by the flow of liquid water in the circulating water pipe, so that the rotating disc rotates by itself, and the bristles arranged on the surface of the rotating disc can clean the dust and other attachments on the surface of the heat dissipation plate, so as to ensure that the heat dissipation plate is in full contact with the air and improve the heat dissipation efficiency.

[0020] 4、The present application is provided with a first power connection piece and a second power connection piece, when the water temperature in the stainless steel sink is higher than 50 DEG C, the thermal expansion and contraction medium in the sealing cylinder expands to cover the first power connection piece and the second power connection piece, because the thermal expansion and contraction medium is mercury, which has good conductivity, so that the circuit of the water pump is automatically connected, and the water pump is automatically operated when the water temperature is higher than 50 DEG C, without manual operation.

[0021] 5、The present application is provided with two guide plates, which can guide the flow direction of the liquid water in the stainless steel sink, so that the liquid water flows in a circular manner, so as to promote the uniform cooling of the liquid water, and the disc is arranged to drive the guide plate to swing back and forth in the stainless steel sink, so as to control and adjust the flow direction of the circulating water flow, and further promote the uniform temperature of the liquid water in the stainless steel sink, so as to ensure the cooling effect of the liquid water on the alloy castings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the internal structure schematic diagram of the high-temperature alloy castings welding cooling device provided by the present application;

[0023] Figure 2 is Figure 1 the enlarged view of A in

[0024] Figure 3 is the structure schematic diagram of the heat dissipation runner in the high-temperature alloy castings welding cooling device provided by the present application;

[0025] Figure 4This is a top view schematic diagram of a high-temperature alloy casting welding repair and cooling device provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the pin and movable frame in a high-temperature alloy casting welding repair cooling device provided by the present invention.

[0027] In the diagram, 1 is a stainless steel water tank, 2 is a casting fixing seat, 3 is an overflow port, 4 is a circulating water pipe, 5 is a water pump, 6 is a heat dissipation wheel, 7 is a mounting plate, 8 is a rotating shaft, 9 is a sealing cylinder, 10 is a heat dissipation plate, 11 is a counterweight, 12 is a thermal expansion and contraction medium, 13 is a first electrical contact plate, 14 is a second electrical contact plate, 15 is a guide plate, 16 is a disc, 17 is a pin, 18 is a movable frame, 19 is a push-pull rod, 20 is a sliding sleeve, 21 is a rotating rod, 22 is a water wheel, 23 is a turntable, 24 is a hydraulic cylinder, 25 is a lifting platform, and 26 is a thermometer. Detailed Implementation

[0028] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] like Figures 1-5 As shown, a high-temperature alloy casting welding repair cooling device includes: a stainless steel water tank 1, two circulating water pipes 4 and a heat dissipation wheel 6. A casting fixing seat 2 is installed on the bottom surface of the stainless steel water tank 1. A hydraulic cylinder 24 is installed in the casting fixing seat 2. A lifting platform 25 is fixed to the output end of the hydraulic cylinder 24. The position of the welding repair area can be easily adjusted through the hydraulic cylinder 24, and it is suitable for welding repair and rework of various castings. An overflow port 3 is opened on the side wall of the stainless steel water tank 1. The overflow port 3 can ensure that the position of the welding repair area is 3-5mm higher than the position of the overflow port 3, which is convenient for operation and efficient cooling. A thermometer 26 is fixed on the side wall of the stainless steel water tank 1, which allows the staff to intuitively judge the water temperature in the stainless steel water tank 1 through the thermometer 26.

[0030] Two circulating water pipes 4 are symmetrically arranged on both sides of the stainless steel water tank 1. Both ends of the circulating water pipes 4 are connected to the inside of the stainless steel water tank 1. The circulating water pipes 4 are vertical and their ends are connected to the stainless steel water tank 1 at different heights. The middle part of the circulating water pipes 4 is set in an arched bend. A water pump 5 is installed at the connection between the circulating water pipes 4 and the stainless steel water tank 1.

[0031] Using liquid water as a heat transfer medium can quickly and evenly cool the welded area, removing the heat generated by the weld, thereby reducing or even eliminating cracks caused by a large temperature difference between the welded area and the casting body, ensuring the weld quality and work efficiency of high-temperature alloy castings.

[0032] The heat dissipation rotating wheel 6 is arranged at the arched bending part of the circulating water pipe 4, the heat dissipation rotating wheel 6 comprises a mounting plate 7 fixed on the side wall of the stainless steel water tank 1, a rotating shaft 8 is rotatably connected to the mounting plate 7, three sealing cylinders 9 are arranged in an annular array on the rotating shaft 8, and a heat dissipation plate 10 is fixed on each of the three sealing cylinders 9; the heat dissipation plate 10 is in an arc structure which is matched with the arched bending part of the circulating water pipe 4; and a heat-driven gravity adjusting assembly is arranged in the sealing cylinder 9.

[0033] The heat-driven gravity adjusting assembly comprises a counterweight 11 which is sealingly and slidably connected to the inner side of the sealing cylinder 9; a thermal expansion and contraction medium 12 is filled in the sealed space formed by the counterweight 11 and the sealing cylinder 9 near the side of the stainless steel water tank 1; and an exhaust hole is formed in the side wall of the sealing cylinder 9 to avoid the resistance generated by the counterweight 11 when sliding in the sealing cylinder 9 due to the air pressure.

[0034] When the water temperature is high, the heat is transferred to the heat dissipation plates 10 and the sealing cylinders 9 near the circulating water pipe 4, so that the thermal expansion and contraction medium 12 in the sealing cylinder 9 is heated and expanded, thereby pushing the counterweight 11 to move, so that the gravity center of the heat dissipation rotating wheel 6 is offset, and the heat dissipation rotating wheel 6 is rotated by a certain angle, so that the heat dissipation plate 10 is rotated to the upper position and is separated from the surface of the circulating water pipe 4; the heat dissipation plate 10 can quickly dissipate heat to the air; the adjacent heat dissipation plate 10 is rotated to the position close to the circulating water pipe 4, and is automatically rotated and separated after absorbing the heat of the circulating water pipe 4 by the heat dissipation plate 10; and the above process is repeated, so that the heat dissipation plates 10 are intermittently rotated without the need of an additional power driving device, thereby achieving the purpose of quickly dissipating the heat of the water in the circulating water pipe 4 to the air, effectively reducing the temperature of the liquid water, and improving the cooling effect.

[0035] The side wall of the sealing cylinder 9 is embedded with a first electrically-conductive sheet 13 and a second electrically-conductive sheet 14 which are opposite to each other and do not contact each other; the first electrically-conductive sheet 13 is electrically connected with an external power supply; and the second electrically-conductive sheet 14 is electrically connected with the water pump 5; in this embodiment, the thermal expansion and contraction medium 12 is liquid mercury which has good thermal expansion and contraction and electrical conductivity; when the thermal expansion and contraction medium 12 is heated and expanded and contacts the first electrically-conductive sheet 13 and the second electrically-conductive sheet 14, the circuit between the first electrically-conductive sheet 13 and the second electrically-conductive sheet 14 is connected, thereby achieving the purpose of automatically controlling the on-off of the circuit of the water pump 5; when the water temperature in the stainless steel water tank 1 is lower than 50℃, the degree of expansion of the thermal expansion and contraction medium 12 is not enough to contact the first electrically-conductive sheet 13 and the second electrically-conductive sheet 14, and the first electrically-conductive sheet 13 and the second electrically-conductive sheet 14 are in a power-off state; and when the water temperature in the stainless steel water tank 1 is higher than 50℃, the thermal expansion and contraction medium 12 in the sealing cylinder 9 is expanded to be higher than the first electrically-conductive sheet 13 and the second electrically-conductive sheet 14, thereby automatically connecting the circuit of the water pump 5 and controlling the water pump 5 to automatically operate when the water temperature is higher than 50℃, without the need of manual operation.

[0036] Both sides of the stainless steel water tank 1 are hinged with guide plates 15. The two guide plates 15 are arranged parallel to each other. The guide plates 15 guide the flow direction of liquid water in the stainless steel water tank 1, so that the liquid water flows in a ring to promote uniform cooling of the liquid water. A disc 16 is coaxially fixed on the rotating shaft 8. A pin 17 is fixed on the surface of the disc 16. A movable frame 18 is sleeved on the pin 17. A push-pull rod 19 is fixed on the movable frame 18. The side wall of the stainless steel water tank 1 has a through hole for the push-pull rod 19 to pass through. The end of the push-pull rod 19 located in the stainless steel water tank 1 is hinged to the surface of the guide plate 15. During operation, the cooling wheel 6 is used as the driving force to make the guide plate 15 swing back and forth in the stainless steel water tank 1, control and adjust the flow direction of the circulating water, and further promote the uniform temperature of the liquid water in the stainless steel water tank 1 to ensure the cooling effect of the liquid water on the alloy casting.

[0037] Two sliding sleeves 20 are fixed on the circulating water pipe 4. A rotating rod 21 is rotatably connected inside the sliding sleeve 20. One end of the rotating rod 21 extends into the circulating water pipe 4 and is fixed with a water wheel 22. The other end of the rotating rod 21 is fixed with a turntable 23. Brush bristles are evenly distributed on the peripheral wall of the turntable 23. The flow of liquid water in the circulating water pipe 4 is used as the driving force to make the turntable 23 rotate by itself. The brush bristles on its surface clean the dust and other attachments on the surface of the heat sink 10 to ensure that the heat sink 10 is in full contact with the air and improve its heat dissipation efficiency.

[0038] The working principle of this invention is as follows:

[0039] Fix the alloy casting on the lifting platform 25 of the casting fixing seat 2, adjust the height of the hydraulic cylinder 24 so that the welding repair area of ​​the casting is 3-5mm above the horizontal position of the overflow port 3 of the stainless steel water tank 1, which is convenient for operation and efficient cooling. Pour water into the stainless steel water tank 1 until the water surface reaches the overflow port 3 and then stop.

[0040] Welding repairs are performed on the alloy castings, which raises the water temperature. As the water temperature in the circulating water pipe 4 increases, the heat is transferred to the heat dissipation plate 10 and the sealing cylinder 9, which are close to the circulating water pipe 4. This causes the thermal expansion and contraction medium 12 in the sealing cylinder 9 to expand due to heat, thereby pushing the counterweight 11 to move. This causes the center of gravity of the heat dissipation wheel 6 to shift, and the entire wheel rotates at a certain angle. This causes the heat dissipation plate 10 to rotate to the upper position and detach from the surface of the circulating water pipe 4. The heat dissipation plate 10 can quickly dissipate heat into the air. At this time, the adjacent heat dissipation plate 10 rotates to a position close to the circulating water pipe 4. After the heat dissipation plate 10 absorbs heat from the circulating water pipe 4 again, it automatically rotates and detaches. This process is repeated without the need for an additional power drive device. This achieves the purpose of intermittently rotating each heat dissipation plate 10, quickly dissipating the heat of the water in the circulating water pipe 4 into the air, effectively reducing the temperature of the liquid water and improving its cooling effect.

[0041] When the water temperature in the stainless steel water tank 1 is higher than 50℃, the thermal expansion and contraction medium 12 in the sealing cylinder 9 expands to cover the first contact piece 13 and the second contact piece 14, thereby automatically connecting the circuit of the water pump 5 and controlling the water pump 5 to run automatically when the water temperature is higher than 50℃, without the need for manual operation by the staff. When the water pump 5 is working, the water circulates rapidly in the stainless steel water tank 1, reducing the water temperature and thus removing the heat from the welding area of ​​the casting. When the water flows in the circulating water pipe 4, it drives the water wheel 22 to rotate, causing the turntable 23 to rotate by itself. The brushes on its surface clean the dust and other attachments on the surface of the heat sink 10, ensuring that the heat sink 10 is in full contact with the air and improving its heat dissipation efficiency.

[0042] During rotation, the heat dissipation wheel 6 drives the disc 16 to rotate via the rotating shaft 8. The disc 16 drives the movable frame 18 to swing back and forth via the pin shaft 17, which in turn drives the guide plate 15 to swing back and forth in the stainless steel water tank 1 via the push-pull rod 19. This controls and adjusts the flow direction of the circulating water, further promoting uniform temperature of the liquid water in the stainless steel water tank 1, so as to ensure the cooling effect of the liquid water on the alloy casting.

[0043] 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling device for welding repair of high-temperature alloy castings, characterized in that, include: A stainless steel water tank (1) is provided with a casting fixing seat (2) installed on the bottom surface of the stainless steel water tank (1) and an overflow port (3) is provided on the side wall of the stainless steel water tank (1). Two circulating water pipes (4) are symmetrically arranged on both sides of the stainless steel water tank (1). Both ends of the circulating water pipes (4) are connected to the inside of the stainless steel water tank (1). The middle part of the circulating water pipes (4) is arranged in an arched shape. A water pump (5) is installed at the connection between the circulating water pipes (4) and the stainless steel water tank (1). A heat dissipation wheel (6) is provided at the arched bend of the circulating water pipe (4). The heat dissipation wheel (6) includes a mounting plate (7) fixed to the side wall of the stainless steel water tank (1). A rotating shaft (8) is rotatably connected to the mounting plate (7). Three sealing cylinders (9) arranged in a ring array are fixed on the rotating shaft (8). A heat dissipation plate (10) is fixed on each of the three sealing cylinders (9). The heat dissipation plate (10) has an arc-shaped structure that fits against the arched bend of the circulating water pipe (4). A heat-driven center of gravity adjustment component is provided inside the sealing cylinder (9).

2. The high-temperature alloy casting welding repair cooling device according to claim 1, characterized in that, The thermally driven center of gravity adjustment assembly includes a counterweight (11) that is slidably connected to the inside of the sealing cylinder (9). The sealed space formed by the counterweight (11) and the sealing cylinder (9) near the stainless steel water tank (1) is filled with a thermally expanding and contracting medium (12).

3. The high-temperature alloy casting welding repair cooling device according to claim 2, characterized in that, The sealing cylinder (9) has a first contact piece (13) and a second contact piece (14) embedded on its side wall. The first contact piece (13) and the second contact piece (14) are opposite to each other and do not contact each other. The first contact piece (13) is electrically connected to an external power source, and the second contact piece (14) is electrically connected to a water pump (5). The thermal expansion and contraction medium (12) is mercury. When the thermal expansion and contraction medium (12) is heated and expands and comes into contact with the first contact piece (13) and the second contact piece (14), the circuit between the first contact piece (13) and the second contact piece (14) is connected, thereby achieving the purpose of automatically controlling the circuit of the water pump (5).

4. The high-temperature alloy casting welding repair cooling device according to claim 1, characterized in that, The stainless steel water tank (1) has guide plates (15) hinged on the inner walls on both sides, and the two guide plates (15) are arranged parallel to each other.

5. The high-temperature alloy casting welding repair cooling device according to claim 4, characterized in that, A disc (16) is coaxially fixed on the rotating shaft (8). A pin (17) is fixed on the surface of the disc (16). A movable frame (18) is sleeved on the pin (17). A push-pull rod (19) is fixed on the movable frame (18). A through hole is provided on the side wall of the stainless steel water tank (1) for the push-pull rod (19) to pass through. One end of the push-pull rod (19) located inside the stainless steel water tank (1) is hinged to the surface of the guide plate (15) through a hinge.

6. The high-temperature alloy casting welding repair cooling device according to claim 1, characterized in that, Two sliding sleeves (20) are fixed on the circulating water pipe (4). A rotating rod (21) is rotatably connected inside the sliding sleeve (20). One end of the rotating rod (21) extends into the circulating water pipe (4) and is fixed with a water wheel (22). The other end of the rotating rod (21) is fixed with a turntable (23). Brush bristles are evenly distributed on the peripheral sidewall of the turntable (23).

7. The high-temperature alloy casting welding repair cooling device according to claim 1, characterized in that, A hydraulic cylinder (24) is installed inside the casting fixing seat (2), and a lifting platform (25) is fixed to the output end of the hydraulic cylinder (24).

8. The high-temperature alloy casting welding repair cooling device according to claim 1, characterized in that, A thermometer (26) is fixed on the side wall of the stainless steel water tank (1).

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