High-temperature alloy steel thermal cutting device for nuclear power valve body

Abstract

The high-temperature alloy steel thermal cutting device for the nuclear power valve body comprises a cutting frame, a thermal cutter, a limiting device, an anti-deviation device, a carrying table, a supporting frame and a driving machine, the anti-deviation device is arranged, a hydraulic rod is started, a rotating ring rotates, after four clamping rods incline and change, the area of an area defined by the inner sides of the clamping rods also changes, and therefore the thermal cutting effect is achieved. The clamping rods can better clamp the periphery of the high-temperature alloy steel conveniently, the stable clamping effect is achieved, then the servo motor is started, the pulleys walk along the bottom rail and the upper rail, and therefore the high-temperature alloy steel is driven to move along the limiting device, manual pushing by personnel is not needed for cutting, the hidden danger of personnel injury is reduced, and in the cutting process of the high-temperature alloy steel, the cutting efficiency is improved. And cutting is more standard, and the situation of cutting deviation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of thermal cutting technology, specifically a thermal cutting device for high-temperature alloy steel used in nuclear power valve bodies. Background Technology

[0002] Nuclear power valves are among the most numerous media transport control devices used in nuclear power plants and are an essential component for the safe operation of nuclear power plants. The materials used in their construction must be those that prevent radioactive contamination, such as high-temperature alloy steel, which has high standard requirements. In the manufacturing process of nuclear power valve bodies, thermal cutting equipment is commonly used to thermally cut high-temperature alloy steel. By melting the material with a high-temperature flame or electric arc, the concentrated heat energy causes the high-temperature alloy steel to melt and fracture, thus completing the material removal.

[0003] Existing thermal cutting devices for high-temperature alloy steel used in nuclear power plant valve bodies are mostly optimized by adding structures to cool the workpiece after thermal cutting, thus increasing overall practicality. For example, Chinese utility model patent application number CN202020886883.1 discloses a thermal cutting device for processing high-temperature alloy steel. This device includes a worktable, a laser cutting gun, and a support rod. When the device is in use, a second electric push rod adjusts the height of the laser cutting gun, a first electric push rod adjusts the left and right position of the laser cutting gun, and a third electric push rod moves the workpiece back and forth, allowing the laser cutting gun to effectively cut the workpiece. After the workpiece is processed, the device returns to its original position, the control valve opens, and gas enters the interior of the fixed rod, thereby pushing the connecting rod to extend out of the water pipe. At this time, the water pipe pushes the support rod inward, allowing gas to enter the interior of the water pipe and causing water to spray out to dissipate heat from the workpiece. Subsequently, a spring drives the device to return to its original position, and the water flows downward along the worktable and the fixed hole, finally entering the interior of the device through the filter tank, thus increasing overall practicality.

[0004] Although the aforementioned thermal cutting device for high-temperature alloy steel used in nuclear power valve bodies has certain advantages in terms of increasing the structure for cooling the workpiece after thermal cutting and improving overall practicality, it still has certain drawbacks: due to the diverse specifications of high-temperature alloys, during thermal cutting, personnel usually manually and slowly push the high-temperature alloy through the thermal cutting blade, allowing concentrated heat to melt and break the high-temperature alloy steel. However, during the process of personnel pushing the high-temperature alloy, it is easy for the entire high-temperature alloy to fail to move synchronously, resulting in errors in the cutting position of the high-temperature alloy and easily causing high-temperature injuries to the personnel's hands. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To solve the above-mentioned technical problems, this utility model provides a high-temperature alloy steel thermal cutting device for nuclear power valve bodies.

[0007] (II) Technical Solution

[0008] Based on this, the present invention provides the following technical solution: a high-temperature alloy steel hot cutting device for nuclear power valve bodies, comprising a cutting frame, a hot cutting blade, a limiting device, an anti-deviation device, a platform, a support frame, and a drive motor. The outer bottom surface of the limiting device is fixedly connected to the upper surface of the platform. The anti-deviation device is movable inside the limiting device. The hot cutting blade and the drive motor are integrated. The cutting frame is welded to the support frame. The platform is welded and installed above the support frame. The drive motor is installed on one side of the cutting frame. The gap of the anti-deviation device is located above the platform.

[0009] Preferably, the limiting device further includes a bottom rail, an upper rail, a screw, a welding block, and a bearing seat. The upper rail is located above the bottom rail. The screw passes through the interior of the upper rail and is engaged with it. The lower end of the screw is connected to the bearing seat. The bearing seat is fixedly installed on the inner bottom end of the welding block. The screw engages with the inner wall of the welding block.

[0010] Preferably, the anti-deviation device includes a moving block, a telescopic block, pulleys, a servo motor, a chain, a fixed base, a hydraulic rod, and a clamping structure. The telescopic block and the moving block are an integrated structure. The pulleys are embedded and connected to the four edges of the moving block. The servo motor is embedded and installed inside the moving block. The servo motor is movably engaged with the pulleys. The chain is wound around the output shaft of the servo motor and is movably engaged. The bottom of the fixed base is fixedly connected to the inner bottom of the moving block. The clamping structure is installed above the fixed base. The hydraulic rod is located on the oblique side of the clamping structure, and the upper end of the hydraulic rod is hinged to the side end of the clamping structure and is movably engaged.

[0011] Preferably, the clamping structure includes a through post, a through opening, a rotating ring, a flexible connecting block, a clamping rod, and a fixing block. The through opening and the through post are an integrated structure and are disposed through the inner side of the through post. The rotating ring is movable on the outer side of the through post. The flexible connecting block is hinged to the side end face of the through post. The fixing block is fixedly connected to the side end face of the rotating ring. The two ends of the clamping rod pass through the interior of the flexible connecting block and the fixing block, respectively.

[0012] Preferably, the drive motor is provided in two locations, arranged symmetrically in the upper and lower positions, and is respectively connected to the two ends of the hot cutting blade. Under the electrical interaction inside the drive motor, the hot cutting blade can be heated to a high temperature, which facilitates the hot cutting operation of high-temperature alloy steel.

[0013] Preferably, the limiting device is provided in two places and is arranged symmetrically in front and behind, and the anti-deviation device is provided in two places and is respectively movable inside the limiting device.

[0014] Preferably, the bottom rail is fixedly connected to the upper surface of the platform, and the welding block is provided in two places, which are respectively installed on the bottom end surface of the bottom rail and the outer end surface of the upper rail. The distance between the upper rail and the bottom rail is adjustable, so that high-temperature alloys of different heights can pass through the bottom rail and the upper rail, so that the high-temperature alloys are subjected to upper and lower clamping forces after being placed.

[0015] Preferably, the pulleys are provided in four places and arranged symmetrically in pairs. The pulleys slide in cooperation with the bottom rail and the top rail. The telescopic block has telescopic properties. The front and rear ends of the moving block are open at the middle, which facilitates the penetration of the high-temperature alloy. The telescopic block assists the moving block in producing a height change as a whole, which facilitates the moving block to drive the high-temperature alloy to slide inside the limiting device.

[0016] Preferably, a fixed seat is fixedly connected to the lower outer periphery of the through-column, and the side end of the rotating ring is hinged and movably engaged with the upper end of the hydraulic rod. The flexible connecting block, clamping rod and fixed block are a set that move together. There are four sets, and two sets are integrated and arranged in parallel. Under the rotation of the rotating ring, the position can change, which facilitates the change of the diameter formed by the four sets of inner sides, flexibly clamping the high-temperature alloy on the outer periphery, and better driving the high-temperature alloy to move.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a high-temperature alloy steel thermal cutting device for nuclear power plant valve bodies, which has the following advantages:

[0019] 1. The high-temperature alloy steel thermal cutting device for nuclear power valve bodies is equipped with a limiting device. By manually rotating the screw, the distance between the bottom rail and the top rail is adjusted, and the high-temperature alloy steel to be cut passes through the inside of the anti-deviation device at both ends and between the bottom rail and the top rail. This allows the high-temperature alloy steel to be pushed only along the direction of the bottom rail and the top rail during the cutting process with the assistance of the anti-deviation device.

[0020] 2. This high-temperature alloy steel thermal cutting device for nuclear power valve bodies features an anti-deviation device. When the hydraulic rod is activated, the rotating ring changes, and the area enclosed by the four clamping rods on their inner sides also changes after tilting. This allows the clamping rods to better hold the high-temperature alloy steel around its outer periphery, providing a stable clamping effect. Then, the servo motor is activated, causing the pulleys to move along the bottom and top rails, thereby moving the high-temperature alloy steel along the limiting device. This eliminates the need for manual pushing during cutting, reducing the risk of injury to personnel. It also ensures a more standard cut of the high-temperature alloy steel during the cutting process, preventing cutting deviation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the drive mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the limiting device of this utility model;

[0024] Figure 4 This is a schematic diagram of the anti-deviation device of this utility model;

[0025] Figure 5 This is a schematic diagram of the clamping structure of this utility model.

[0026] In the diagram: Cutting frame-1, Hot cutting blade-2, Limiting device-3, Anti-deviation device-4, Platform-5, Support frame-6, Drive motor-7, Bottom rail-31, Upper rail-32, Screw-33, Welding block-34, Bearing seat-35, Moving block-41, Telescopic block-42, Pulley-43, Servo motor-44, Chain-45, Fixed seat-46, Hydraulic rod-47, Clamping structure-48, Through column-q1, Through opening-q2, Rotary ring-q3, Flexible connecting block-q4, Clamping rod-q5, Fixed block-q6. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-2 A thermal cutting device for high-temperature alloy steel used in nuclear power valve bodies includes a cutting frame 1, a thermal cutting blade 2, a limiting device 3, an anti-deviation device 4, a platform 5, a support frame 6, and a drive motor 7. The outer bottom surface of the limiting device 3 is fixedly connected to the upper surface of the platform 5. The anti-deviation device 4 is movable inside the limiting device 3. The thermal cutting blade 2 and the drive motor 7 are integrated. The cutting frame 1 is welded to the support frame 6. The platform 5 is welded and installed above the support frame 6. The drive motor 7 is installed on one side of the cutting frame 1. The anti-deviation device 4 is located above the platform 5. The drive motor 7 has two locations, symmetrically arranged vertically, and is connected to the two sides of the thermal cutting blade 2 respectively. The thermal cutting blade 2 can be heated to a high temperature under the electrical interaction inside the drive motor 7, which facilitates thermal cutting of high-temperature alloy steel. The limiting device 3 has two locations, symmetrically arranged front and back. The anti-deviation device 4 has two locations, each movable inside the limiting device 3.

[0029] Please see Figure 3-4A high-temperature alloy steel thermal cutting device for nuclear power valve bodies includes a limiting device 3 that further comprises a bottom rail 31, an upper rail 32, a screw 33, a welding block 34, and a bearing seat 35. The upper rail 32 is located above the bottom rail 31. The screw 33 passes through the interior of the upper rail 32 and is engaged with it. The lower end of the screw 33 is connected to the bearing seat 35, which is fixedly installed on the inner bottom end of the welding block 34. The screw 33 engages with the inner wall of the welding block 34. The anti-deviation device 4 includes a moving block 4. 1. The telescopic block 42, pulley 43, servo motor 44, chain 45, fixed base 46, hydraulic rod 47, and clamping structure 48 are integrated into the telescopic block 42 and the movable block 41. The pulley 43 is embedded and connected to the four edges of the movable block 41. The servo motor 44 is embedded and installed inside the movable block 41. The servo motor 44 is movably engaged with the pulley 43. The chain 45 is wound around the output shaft of the servo motor 44 and is movably engaged. The bottom of the fixed base 46 is connected to the movable block 41. The bottom inner side is fixedly connected, the clamping structure 48 is installed above the fixed base 46, the hydraulic rod 47 is set on the oblique side of the clamping structure 48 and the upper end of the hydraulic rod 47 is hinged and movablely engaged with the side end of the clamping structure 48, the bottom rail 31 is fixedly connected to the upper end surface of the platform 5, the welding block 34 is provided in two places and is respectively installed on the bottom end surface of the bottom rail 31 and the outer end surface of the upper rail 32, the distance between the upper rail 32 and the bottom rail 31 is adjustable, so that high temperature alloys of different heights can pass through the bottom rail 31 and the upper rail 32, so that the high temperature alloy is subjected to the upper and lower clamping force after being placed, the pulley 43 is provided in four places and is symmetrically arranged in pairs, the pulley 43 slides with the bottom rail 31 and the upper rail 32, the telescopic block 42 has telescopic properties, the front and rear ends of the moving block 41 are open at the middle, so that the high temperature alloy can pass through, and the telescopic block 42 assists the moving block 41 to generate a height change, so that the moving block 41 can drive the high temperature alloy to slide inside the limiting device 3.

[0030] Please see Figure 5 A thermal cutting device for high-temperature alloy steel used in nuclear power plant valve bodies includes a clamping structure 48 comprising a through-post q1, a through-hole q2, a rotating ring q3, a flexible connecting block q4, a clamping rod q5, and a fixing block q6. The through-hole q2 is an integral structure with the through-post q1 and is disposed inside the through-post q1. The rotating ring q3 is movable outside the through-post q1. The flexible connecting block q4 is hinged to the side end face of the through-post q1. The fixing block q6 is fixedly connected to the side end face of the rotating ring q3. The two ends of the clamping rod q5 pass through the flexible connecting block q6. Inside block q4 and fixed block q6, a fixed seat 46 is fixedly connected to the lower end of the outer periphery of the through column q1. The side end of the rotating ring q3 is hinged to the upper end of the hydraulic rod 47 and movably engaged. The connecting block q4, clamping rod q5 and fixed block q6 are arranged as a group for coordinated movement. There are four groups, and two groups are integrated and arranged in parallel. Under the rotation of the rotating ring q3, the position can change, which facilitates the change of the diameter formed by the inner sides of the four groups. It can flexibly clamp the outer periphery of the high-temperature alloy and better drive the displacement of the high-temperature alloy.

[0031] In summary, the main power supply of the starting device is activated, and the drive motor 7 is started, causing the hot cutting blade 2 to heat up to a high temperature. With the limit device 3 in place, the operator adjusts the distance between the bottom rail 31 and the upper rail 32 according to the height specifications of the high-temperature alloy steel to be cut. The screw 33 is manually rotated, causing the outer circumference of the screw 33 to engage with the wall of the through-hole of the upper rail 32, allowing the upper rail 32 to move up and down along the screw 33. The high-temperature alloy steel to be cut is then passed through the anti-deviation device 4 at both ends, passing between the bottom rail 31 and the upper rail 32. This ensures that during the cutting process, the high-temperature alloy steel is pushed only along the direction of the bottom rail 31 and the upper rail 32 with the assistance of the anti-deviation device 4. As the high-temperature alloy steel is gradually pushed, it is cut by the hot cutting blade 2 through high-temperature electrofusion. The anti-deviation device 4, when... After the high-temperature alloy steel passes through the through-hole q2, the hydraulic rod 47 is activated, causing the rotating ring q3 to rotate during its extension and retraction. The fixed block q6 rotates along the rotating ring q3 and changes position. One end of the clamping rod q5 moves with the fixed block q6, flexibly connecting the flexible joint q4 and the through-post q1, which assists the clamping rod q5 in tilting. After the four clamping rods q5 tilt, the area enclosed by their inner sides also changes, making it easier for the clamping rods q5 to better clamp the outer periphery of the high-temperature alloy steel, thus playing a stable clamping role. Then, the servo motor 44 is activated, causing the pulley 43 to move along the bottom rail 31 and the upper rail 32, thereby driving the high-temperature alloy steel to move along the limiting device 3. No manual pushing is required for cutting, reducing the risk of injury to personnel. It also makes the cutting of the high-temperature alloy steel more standard during the cutting process and avoids cutting deviation.

[0032] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0033] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature alloy steel hot cutting device for nuclear valve body, comprising a cutting frame (1), a hot cutting knife (2), an anti-deviation device (4), a carrier (5), a support frame (6) and a drive machine (7), the hot cutting knife (2) and the drive machine (7) are integrated structure, the cutting frame (1) and the support frame (6) are welded, the carrier (5) is welded and installed above the support frame (6), the drive machine (7) is installed on one side of the cutting frame (1), and the anti-deviation device (4) is located above the carrier (5). characterized in that It also includes a limiting device (3), the outer bottom end surface of the limiting device (3) is fixedly connected with the upper end surface of the carrier (5), the anti-deviation device (4) moves in the inner side of the limiting device (3), the limiting device (3) further includes a bottom rail (31), an upper rail (32), a screw (33), a welding block (34) and a bearing seat (35), the upper rail (32) is located above the bottom rail (31), the screw (33) penetrates through the inside of the upper rail (32) and is engaged, the lower end of the screw (33) is connected with the bearing seat (35), the bearing seat (35) is fixedly installed at the inner bottom end of the welding block (34), and the screw (33) is engaged with the inner side wall of the welding block (34).

2. The high-temperature alloy steel hot cutting device for nuclear valve body according to claim 1, characterized in that: The anti-deviation device (4) includes a moving block (41), a telescopic block (42), a pulley (43), a servo motor (44), a chain (45), a fixed seat (46), a hydraulic rod (47) and a clamping structure (48), the telescopic block (42) and the moving block (41) are integrated structure, the pulley (43) is embeddedly connected at four edges of the moving block (41), the servo motor (44) is embeddedly installed in the inside of the moving block (41), the servo motor (44) is movably matched with the pulley (43), the chain (45) is wound on the output shaft of the servo motor (44) and is movably matched, the bottom of the fixed seat (46) is fixedly connected with the inner bottom of the moving block (41), the clamping structure (48) is installed above the fixed seat (46), and the hydraulic rod (47) is arranged at the inclined side of the clamping structure (48) and the upper end of the hydraulic rod (47) is hingedly connected with the side end of the clamping structure (48) and is movably matched.

3. The high-temperature alloy steel hot cutting device for nuclear valve body according to claim 2, characterized in that: The clamping structure (48) includes a penetrating column (q1), a penetrating hole (q2), a swivel ring (q3), a flexible linking block (q4), a clamping rod (q5) and a fixed block (q6), the penetrating hole (q2) and the penetrating column (q1) are integrated structure and are arranged through the inside, the swivel ring (q3) movably exists at the outside of the penetrating column (q1), the flexible linking block (q4) is hingedly connected with the side end surface of the penetrating column (q1), the fixed block (q6) is fixedly connected with the side end surface of the swivel ring (q3), and the two side ends of the clamping rod (q5) penetrate through the inside of the flexible linking block (q4) and the fixed block (q6) respectively.

4. The high-temperature alloy steel thermal cutting device for nuclear valve body according to claim 1, characterized in that: The drive machine (7) is provided with two, and is symmetrically arranged up and down, and is connected with the two side ends of the hot cutting knife (2) respectively.

5. The high temperature alloy steel hot cutting device for nuclear valve body according to claim 1, characterized in that: The limiting device (3) is provided with two parts and is symmetrically arranged front and back, and the anti-deviation device (4) is provided with two parts and is movably arranged on the inner side of the limiting device (3).

6. The high temperature alloy steel hot cutting device for nuclear valve body according to claim 1, characterized in that: The bottom rail (31) is fixedly connected to the upper end surface of the loading platform (5), the welding block (34) is provided with two parts and is installed on the bottom end surface of the bottom rail (31) and the outer end surface of the upper rail (32) respectively.

7. The high-temperature alloy steel thermal cutting device for nuclear valve body according to claim 2, characterized in that: The pulley (43) is provided with four parts and is symmetrically arranged in pairs, and the pulley (43) is in sliding fit with the bottom rail (31) and the upper rail (32).

8. The high-temperature alloy steel hot cutting device for nuclear valve body according to claim 3, characterized in that: The outer peripheral lower end of the penetrating column (q1) is fixedly connected with the fixing seat (46), and the side end of the rotating ring (q3) is hingedly connected with the upper end of the hydraulic rod (47) and is movably fitted.

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