Laser cladding device based on high-pressure steam combined valve

Abstract

The utility model discloses a laser cladding device based on a high-pressure steam combined valve. The laser cladding device comprises a laser cladding base, a motor, a connecting rod assembly, an electronic assembly and a laser cladding assembly. The motor comprises a motor rotating shaft, the electronic assembly comprises a control circuit board, the laser cladding assembly comprises a laser cladding head and a powder conveying mechanism, and the powder conveying mechanism comprises a powder conveying hose and a powder box. The laser cladding device is fixed to the high-pressure steam combined valve through the laser cladding base, and the control circuit board controls the motor rotating shaft to rotate forwards or reversely to drive the connecting rod assembly so as to drive the laser cladding head at the same time, so that the laser cladding head reaches the internal defect position in the high-pressure steam combined valve. According to the method, the laser cladding powder conveyed by the powder box and the powder conveying hose is matched to carry out laser cladding repairing on the internal defects, internal defect repairing can be effectively carried out on the high-pressure steam combination valve with operation limitation caused by small size and narrow interior, in addition, all-directional repairing can be achieved according to the laser cladding process requirement of the high-pressure steam combination valve, and the working efficiency is improved. Therefore, the working efficiency of the laser cladding device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a laser cladding device based on a high-pressure steam combined valve. Background Art

[0002] The high-pressure steam combined valve is an important component used by thermal power units to adjust steam parameters in turbine cylinders and boiler pressure pipes. Due to the long-term high-temperature and high-pressure operation of the unit and frequent peak load regulation, the high-pressure steam combined valve is subjected to harsh working conditions such as mechanical vibration, wear, cold and hot fatigue during service. Its internal manufacturing defects and microstructure will also change accordingly, aging and even cracking will occur. Therefore, the valve body of the high-pressure steam combined valve needs to be repaired.

[0003] When repairing the valve body of a high-pressure steam combined valve, traditional repair technology has low repair efficiency, and the performance of the valve body after repair is poor. Its strength and corrosion resistance cannot meet the requirements of long-term stable use. In addition, due to the relatively narrow volume of the high-pressure steam combined valve, manual repair cannot completely cover the valve body surface, and cannot completely repair cracked and damaged areas of the valve body.

[0004] Therefore, it is necessary to design a repair device with high repair efficiency and capable of adapting to the narrow volume of the high-pressure steam combined valve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the existing high-pressure steam combined valve repair technology, that is, the repair efficiency is low and the repair technology cannot adapt to the narrow volume of the high-pressure steam combined valve, and to provide a laser cladding device based on the high-pressure steam combined valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A laser cladding device based on a high-pressure steam combined valve, comprising

[0008] Laser cladding base for fixing on high pressure steam union valve;

[0009] A motor, fixed on the high-pressure steam combined valve through the laser cladding base, comprising a motor shaft, the axis of which can coincide with the axis of the joint surface of the high-pressure steam combined valve;

[0010] A connecting rod assembly, fixedly connected to the motor shaft, capable of rotating forward or reversely with the motor shaft relative to the joint surface of the high-pressure steam combined valve;

[0011] An electronic assembly, including a control circuit board, for connecting to the motor;

[0012] A laser cladding assembly is arranged at the end of the connecting rod assembly, and includes a laser cladding head and a powder feeding mechanism. The powder feeding mechanism includes a powder feeding hose and a powder box arranged at the top end of the laser cladding base. The powder feeding hose connects the powder box and the laser cladding head. The length of the powder feeding hose meets the distance requirement when the laser cladding head rotates forward or reversely with the connecting rod assembly relative to the joint surface of the high-pressure steam combined valve.

[0013] Furthermore, the laser cladding base includes an annular body and a plurality of laser cladding base bolt holes, wherein the laser cladding base bolt holes are distributed on the annular body, and the center of the annular body has a space for the motor, the connecting rod assembly and the laser cladding assembly to pass through, and the number, distribution and size of the laser cladding base bolt holes are consistent with the bolt holes of the high-pressure steam combined valve.

[0014] Furthermore, the laser cladding base also includes an electrical box and a support arm, the axis of the motor shaft passes through the electrical box, and the support arm connects the annular body and the electrical box.

[0015] Furthermore, the supporting force arm includes a vertical portion and a horizontal portion connected to each other, the vertical portion is connected to the annular body, and the horizontal portion is connected to the electrical box.

[0016] Furthermore, the electrical box has a cavity for accommodating the control circuit board, the upper surface of the electrical box is connected to the powder box, the lower surface of the electrical box has a circular hole, and the top of the motor is provided with an annular boss, and the annular boss overlaps the outer periphery of the circular hole to fix the motor on the electrical box.

[0017] Furthermore, the motor controls the rotation of the motor shaft through the control circuit board, and controls the cladding speed of the laser cladding head by adjusting the rotation speed of the motor shaft. The rotation modes of the motor shaft include forward rotation and reverse rotation.

[0018] Further, the connecting rod assembly includes an electric push rod and a connecting rod, the connecting end of the electric push rod is connected to the motor, the movable end of the electric push rod is connected to the connecting rod, the motor shaft drives the electric push rod and the connecting rod to rotate by rotating, and the connecting rod adjusts the position height through the electric push rod;

[0019] The connecting rod is a 7-shaped rod with a certain angle, and the connection between the connecting rod and the motor shaft is a latch-type connection;

[0020] Alternatively, the connecting rod is an inclined rod, and the connecting rod and the motor shaft are connected in a hinged manner.

[0021] Furthermore, the electronic component also includes electric wires, and the electric wires include a first electric wire and a second electric wire, the first electric wire connects the laser cladding head and the control circuit board, the second electric wire connects the electric push rod and the control circuit board, the first electric wire and the second electric wire are coated with a layer of hose on the outer circumference, and the length of the first electric wire meets the distance requirement when the laser cladding head rotates forward or reversely with the connecting rod assembly relative to the joint surface of the high-pressure steam combined valve.

[0022] Furthermore, the first electric wire and the second electric wire are distributed on both sides of the axis of the laser cladding base.

[0023] Furthermore, the side of the laser cladding head away from the axis of the laser cladding base includes a laser head, a camera, a powder spray head and a powder sprayer. The powder spray head is connected to the powder delivery hose through the powder sprayer. The laser cladding head rotates to a set angle under the action of the motor to perform laser cladding repair on the valve body of the high-pressure steam combined valve.

[0024] In summary, compared with the prior art, the utility model has at least the following beneficial effects: the laser cladding device based on the high-pressure steam combined valve of the utility model comprises a laser cladding base, a motor, a connecting rod assembly, an electronic assembly and a laser cladding assembly. The motor comprises a motor shaft, the electronic assembly comprises a control circuit board, the laser cladding assembly comprises a laser cladding head and a powder feeding mechanism, and the powder feeding mechanism comprises a powder feeding hose and a powder box. The laser cladding device is fixed on the high-pressure steam combined valve through the laser cladding base, the control circuit board controls the motor shaft to rotate forward or reverse to drive the connecting rod assembly to simultaneously drive the laser cladding head, so that the laser cladding head reaches the internal defects in the high-pressure steam combined valve, and cooperates with the laser cladding powder transported by the powder box and the powder feeding hose to repair the internal defects by laser cladding, which can effectively repair the internal defects of the high-pressure steam combined valve whose operation is limited due to its small size and internal narrowness, and realize stable and efficient laser cladding operation. In addition, the laser cladding head can rotate to a set angle under the action of the motor shaft, and the length of the powder delivery hose meets the laser cladding powder delivery requirements when the laser cladding head moves to different positions. Therefore, all-round repair can be achieved according to the laser cladding process requirements of the high-pressure steam combined valve, thereby effectively improving the working efficiency of the laser cladding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic structural diagram of a laser cladding device according to an embodiment of the utility model.

[0027] Figure 2 This is a schematic structural diagram of the laser cladding device from another angle according to an embodiment of the utility model.

[0028] Figure 3 This is a schematic structural diagram of a laser cladding device installed inside a high-pressure steam combined valve according to an embodiment of the utility model.

[0029] Figure 4 It is a schematic top view of a laser cladding device according to an embodiment of the utility model.

[0030] Figure 5 for Figure 4 Schematic diagram of the cross section at BB in FIG.

[0031] Figure 6 It is a cross-sectional schematic diagram of a laser cladding head according to an embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 1. Laser cladding base; 11. Circular ring-shaped body; 111. Mounting surface; 12. Bolt hole of laser cladding base; 13. Electrical box; 14. Support arm; 141. Vertical part; 142. Horizontal part;

[0034] 2. Motor; 21. Motor shaft; 22. Annular boss;

[0035] 3. Connecting rod assembly; 31. Electric push rod; 32. Connecting rod;

[0036] 4. electronic components; 41. control circuit board; 42. electric wires; 421. first electric wires; 422. second electric wires;

[0037] 5. Laser cladding components; 51. Laser cladding head; 511. Laser head; 512. Camera; 513. Powder spray head; 514. Powder sprayer; 515. Mounting seat; 52. Powder delivery mechanism; 521. Powder box; 522. Powder delivery hose; 523. Powder delivery hard pipe;

[0038] 6. High-pressure steam combined valve. DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] As attached Figure 1 To Attachment Figure 6 As shown, the embodiment of the utility model discloses a laser cladding device based on a high-pressure steam combined valve, comprising:

[0043] The laser cladding base 1 is used to be fixed on the high-pressure steam combined valve 6;

[0044] The motor 2 is fixed on the high-pressure steam combined valve 6 by laser cladding base 1, and includes a motor shaft 21, and the axis of the motor shaft 21 can coincide with the axis of the joint surface of the high-pressure steam combined valve 6;

[0045] The connecting rod assembly 3 is fixedly connected to the motor shaft 21 and can rotate forward or reverse along with the motor shaft 21 relative to the joint surface of the high-pressure steam combined valve 6;

[0046] The electronic component 4 includes a control circuit board 41, which is used to connect with the motor 2;

[0047] The laser cladding assembly 5 is arranged at the end of the connecting rod assembly 3, and includes a laser cladding head 51 and a powder feeding mechanism 52. The powder feeding mechanism 52 includes a powder feeding hose 522, a powder feeding hard pipe 523 and a powder box 521 arranged at the top of the laser cladding base 1. The powder feeding hose 522 connects the powder box 521 and the laser cladding head 51 through the powder feeding hard pipe 523. The length of the powder feeding hose 522 meets the distance requirement when the laser cladding head 51 rotates forward or reversely with the connecting rod assembly 3 relative to the joint surface of the high-pressure steam combined valve 6.

[0048] The laser cladding device is fixed on the high-pressure steam combined valve 6 through the laser cladding base 1 to ensure the stability of the entire device. Further, the motor 2 is also fixed on the high-pressure steam combined valve 6 through the laser cladding base 1, directly connected to the control circuit board 41 and controlled by the control circuit board 41. The motor 2 drives the motor shaft 21 that coincides with the axis of the joint surface of the high-pressure steam combined valve 6 to rotate, and further drives the connecting rod assembly 3 connected to the motor shaft 21, thereby driving the laser cladding assembly 5 connected to the end of the connecting rod assembly 3 to rotate forward one circle and then reverse one circle relative to the joint surface of the high-pressure steam combined valve 6. The laser cladding head 51 cooperates with the laser cladding powder transported by the powder box 521, the powder delivery hard pipe 523 and the powder delivery hose 522 to laser clad and repair the internal defects in the high-pressure steam combined valve 6, which can effectively repair the internal defects of the high-pressure steam combined valve 6 that is limited in operation due to its small size and internal narrowness, and realize stable and efficient laser cladding operation. In addition, the laser cladding head 51 can rotate to a set angle under the action of the motor shaft 21, which can meet the laser cladding process requirements of the high-pressure steam joint valve 6 to achieve all-round repair. The length of the powder delivery hose 522 meets the laser cladding powder delivery requirements when the laser cladding head 51 moves to different positions. Setting a sufficient length can avoid pulling the connection between the powder delivery hose 522 and the powder box 521 or the connection between the powder delivery hose 522 and the laser cladding head 51 when the laser cladding head 51 rotates under the action of the motor shaft 21, ensuring the normal operation of the laser cladding device. At the same time, the powder delivery hose 522 is set as a hose that can produce slight shaking when the laser cladding head 51 rotates under the action of the motor shaft 21, which helps the laser cladding powder to flow smoothly into the laser cladding head 51. A spiral conveyor is provided inside the powder delivery hard tube 523 (not shown in the figure, please refer to the prior art for the specific working method and principle). The laser cladding powder enters the powder delivery hose 522 after being spirally stirred by the spiral conveyor inside the powder delivery hard tube 523. The provision of the powder delivery hard tube 523 can stir the laser cladding powder to prevent the laser cladding powder from agglomerating, and at the same time promote the laser cladding powder to improve the powder output efficiency of the laser cladding powder. In addition, the powder delivery hard tube 523 is detachably connected to the powder delivery hose 522, which facilitates the disassembly of the powder delivery hose 522.

[0049] As attached Figure 2 As shown, the laser cladding base 1 includes an annular body 11 and a plurality of laser cladding base bolt holes 12. The laser cladding base bolt holes 12 are distributed on the annular body 11. The center of the annular body 11 has a space through which the power supply machine 2, the connecting rod assembly 3 and the laser cladding assembly 5 pass. The number, distribution and size of the laser cladding base bolt holes 12 are consistent with the bolt holes of the high-pressure steam combined valve.

[0050] In this embodiment, the annular body 11 has a mounting surface 111 that can fit with the high-pressure steam combined valve 6, and the mounting surface 111 is abutted with the joint surface of the high-pressure steam combined valve 6. When the high-pressure steam combined valve 6 is installed, the laser cladding base 1 and the high-pressure steam combined valve 6 are fixedly connected by bolts passing through the laser cladding base bolt hole 12 and the bolt hole of the high-pressure steam combined valve 6, so that the high-pressure steam combined valve 6 can be stably and accurately installed on the laser cladding device during laser cladding, which is convenient for subsequent laser cladding operations. The role of the consistent number, distribution and size of the bolt holes of the two is to ensure that the annular body 11 is concentric and coaxial with the high-pressure steam combined valve 6, so that the laser cladding base 1 and the high-pressure steam combined valve 6 can be quickly installed and positioned, and ensure that the mounting surface 111 of the laser cladding base 1 and the joint surface of the high-pressure steam combined valve 6 are closely abutted, so as to achieve a stable connection between the laser cladding device and the high-pressure steam combined valve 6. This abutment and cooperation helps to reduce the influence of laser cladding position deviation caused by vibration and shaking during the operation of the laser cladding device, and improve the reliability and durability of the entire laser cladding device.

[0051] The laser cladding base 1 further includes an electrical box 13 and a support arm 14 . The axis of the motor shaft 21 passes through the electrical box 13 . The support arm 14 connects the annular body 11 and the electrical box 13 .

[0052] The function of the electrical box 13 is to place and protect the control circuit board 41, and ensure the normal operation of the control circuit board 41. The function of the support arm 14 is to connect and support, firmly connect the annular body 11 and the electrical box 13, and ensure the stability and integrity of the entire laser cladding device. On the other hand, the weight of the motor 2, the connecting rod assembly 3 and the laser cladding assembly 5 can be transferred to the support arm 14 through the electrical box 13 and then dispersed to the valve body of the high-pressure steam joint valve 6, thereby further improving the stability of the laser cladding device.

[0053] In this embodiment, as shown in the attached Figure 1 As shown, the support arm 14 includes a vertical portion 141 and a horizontal portion 142 connected to each other, the vertical portion 141 is connected to the annular body 11, and the horizontal portion 142 is connected to the electrical box 13. The vertical portion 141 can provide a stable bearing capacity, and the horizontal portion 142 can extend the electrical box 13, the motor 2, the powder box 521, the electric push rod 31 and other components toward the annular body 11, so that the axis center of the laser cladding base 1 and the high-pressure steam joint valve 6 coincides with the axis center of the electrical box 13, the motor 2, the powder box 521, the electric push rod 31 and other components, and can provide a stable support for the electrical box 13, reducing the impact of factors such as the vibration of the motor 2 on the performance of the control circuit board 41.

[0054] As attached Figure 5As shown, the electrical box 13 has a cavity for accommodating the control circuit board 41, the upper surface of the electrical box 13 is connected to the powder box 521, the lower surface of the electrical box 13 has a circular hole, and the top of the motor 2 is provided with an annular boss 22, the annular boss 22 overlaps the outer circumference of the circular hole to fix the motor 2 on the electrical box 13, so that the motor 2 is connected to the control circuit board 41 in the cavity, and the control circuit board 41 further controls the working mode of the motor 2.

[0055] Specifically, the motor 2 controls the rotation of the motor shaft 21 through the control circuit board 41, and controls the cladding speed and running time of the laser cladding head 51 by adjusting the rotation speed of the motor shaft 21. The cladding speed of the laser cladding head 51 is controlled by adjusting the rotation speed of the motor shaft 21 to meet different cladding process requirements and the required cladding effects. The rotation modes of the motor shaft 21 include forward and reverse rotation. Due to the length limitation of the powder delivery hose 522 and the internal wiring harness of the laser cladding device, the motor 2 rotates in the same direction all the time, which will cause the powder delivery hose 522 and the wiring harness to be entangled and pulled and broken due to insufficient length. Therefore, the rotation mode of the motor shaft 21 is set to forward and reverse rotation. When repairing a small-scale defect inside the high-pressure steam combined valve 6, the motor shaft 21 drives the connecting rod assembly 3 and the laser cladding head 51 to rotate forward or reverse a certain angle to complete the repair; when repairing a large-area defect inside the high-pressure steam combined valve 6, the motor shaft 21 drives the connecting rod assembly 3 and the laser cladding head 51 to rotate forward for one circle and then reverse for one circle, and repeat the above operation until the laser repair is completed. The appropriate use method is selected according to the actual defect repair needs. The forward and reverse rotation of the motor shaft 21 is set on the basis of the same laser cladding effect brought by the motor shaft 21 rotating in the same direction, which brings better flexibility to the laser cladding device.

[0056] In this embodiment, as shown in the attached Figure 1As shown, the connecting rod assembly 3 includes an electric push rod 31 and a connecting rod 32. The connecting end of the electric push rod 31 is connected to the motor 2, and the movable end of the electric push rod 31 is connected to the connecting rod 32. The motor shaft 21 drives the electric push rod 31 and the connecting rod 32 to rotate by rotation. The connecting rod 32 and the laser cladding head 51 connected thereto are adjusted in position and height through the electric push rod 31. The function of the connecting rod 32 is to enable the laser cladding head 51 to be closer to the internal defects of the high-pressure steam combined valve 6, shorten the distance to the internal defects of the high-pressure steam combined valve 6, and facilitate the laser cladding head 51 to reach the part to be repaired of the high-pressure steam combined valve 6 more accurately, ensure that the laser cladding powder can be accurately and concentratedly sprayed to the part to be repaired of the high-pressure steam combined valve 6, effectively improve the utilization rate of the laser cladding powder, and reduce the waste of laser cladding powder. The laser cladding head 51 can perform laser cladding repairs at different heights of the inner wall of the high-pressure steam combined valve 6 by moving up and down the electric push rod 31. The rotation effect brought by the motor shaft 21 can make the laser cladding repair range more flexible and comprehensive, ensuring that different positions of the inner wall of the high-pressure steam combined valve 6 can be effectively repaired.

[0057] There are two ways to connect the connecting rod 32 to the motor shaft 21. One is that the connecting rod 32 is a 7-shaped rod with a certain angle, and the connecting rod 32 and the motor shaft 21 are connected in a latch-type connection. When the cladding area needs to be changed, the connecting rod 32 is driven to align the laser cladding head 51 with the cladding area by changing the rotation angle of the motor shaft 21 and the telescopic length of the electric push rod 31; the other is that the connecting rod 32 is an oblique rod, and the connecting rod 32 and the motor shaft 21 are connected in a hinge connection. When the cladding area needs to be changed, the connecting rod 32 is driven to align the laser cladding head 51 with the cladding area by changing the rotation angle of the motor shaft 21 and the telescopic length of the electric push rod 31. The latch-type connection or the hinge-type connection can prevent the connecting rod 32 from loosening, so that the connecting rod 32 and the motor shaft 21 are firmly connected, and the accuracy of the laser cladding operation is ensured. No matter which type of connecting rod 32 is selected, the 7-shaped rod or the inclined rod, the laser cladding head 51 can be driven to reach the designated cladding area according to the expected trajectory, and then the laser cladding repair can be started.

[0058] In this embodiment, as shown in the attached Figure 1 and attached Figure 6As shown, the electronic component 4 also includes a wire 42, and the wire 42 includes a first wire 421 and a second wire 422. The first wire 421 connects the laser cladding head 51 and the control circuit board 41 to realize signal transmission and operation power supply for the laser cladding head 51, and the second wire 422 connects the electric push rod 31 and the control circuit board 41 to realize telescopic control and operation power supply for the electric push rod 31. The outer periphery of the first wire 421 and the second wire 422 is covered with a layer of hose for protection. The first wire 421 and the second wire 422 are both connected to the control circuit board 41 by interface plugging. The plug-in method can make the first wire 421 and the second wire 422 detachably connected to the control circuit board 41. Specifically, when the high-pressure steam combined valve 6 to be repaired is replaced with a model that is no longer compatible with the laser cladding device, the powder delivery hose 522, the first wire 421, the second wire 422 and the electric push rod 31 can be removed, and the matching laser cladding base 1, powder box 521, circuit control board 41 and motor 2 can be replaced, and the above-mentioned components can be reconnected to form a laser cladding device that is compatible with the high-pressure steam combined valve 6. This detachable connection and replacement can make the laser cladding device adapt to a variety of common high-pressure steam combined valves 6 on the market, effectively enhancing the versatility and applicability of the laser cladding device.

[0059] The length of the first wire 421 satisfies the distance requirement when the laser cladding head 51 rotates forward or reversely with the connecting rod assembly 3 relative to the joint surface of the high-pressure steam combined valve 6. The sufficient length is set to adapt to the position change of the laser cladding head 51 when it rotates, and it can ensure that the laser cladding head 51 will not be pulled and broken due to insufficient length of the first wire 421 when it rotates at any angle and any height, thereby affecting the laser cladding operation, and ensuring that the laser cladding head 51 can perform cladding at various positions on the inner wall of the high-pressure steam combined valve 6.

[0060] In addition, the first wire 421 and the second wire 422 are distributed on both sides of the axis of the laser cladding base 1, which can effectively avoid electromagnetic interference between the two after the laser cladding device is powered on, ensure the stability of current transmission, and at the same time, prevent the first wire 421 and the second wire 422 from being entangled when the motor shaft 21 rotates, thereby increasing the failure rate and maintenance cost of the laser cladding device.

[0061] In this embodiment, as shown in the attached Figure 6 As shown, the side of the laser cladding head 51 away from the axis of the laser cladding base 1 includes a laser head 511, a camera 512, a powder spray head 513 and a powder sprayer 514. The powder spray head 513 is connected to the powder delivery hose 522 through the powder sprayer 514. The laser cladding head 51 is rotated to a set angle under the action of the motor 2 to perform laser cladding repair on the valve body of the high-pressure steam combined valve 6.

[0062] The powder spray head 513 is connected to the output end of the powder delivery hose 522 through the powder sprayer 514. When the laser cladding device is in operation, the laser cladding powder in the powder box 521 is sequentially transported to the powder spray head 513 through the powder delivery hose 522 and the powder sprayer 514, and the motor 2 drives the laser cladding head 51 to rotate the required angle to perform cladding repair. The specific repair process is: the laser cladding powder in the powder box 521 is sprayed from the powder spray head 513 through the powder delivery hose 522 and the powder sprayer 514, and sprayed into the position to be repaired, and then the laser head 511 is controlled to be turned on after the powder delivery is stopped. The laser head 511 emits a laser beam to rapidly heat and melt the laser cladding powder and the surface of the inner wall repair position of the high-pressure steam joint valve 6. After the laser beam is removed, the melted laser cladding powder cools to form a high-performance cladding layer to repair the inner wall 6 of the high-pressure steam valve and strengthen the surface.

[0063] Since the high-pressure steam valve is small in size and complex in structure, the inner wall defects and cladding effects are not easily observed by the naked eye. In order to accurately and quickly find the internal defects of the high-pressure steam valve for laser cladding repair and to check the cladding effect in real time, a camera 512 is fixedly arranged on the side of the laser cladding head 51 close to the inner wall of the high-pressure steam combined valve 6. The function is to observe the working condition of the laser cladding head 51 through the real-time image sent back by the camera 512, and to timely check the cladding state and effect of the inner wall surface of the high-pressure steam combined valve 6. When it is found that the repair part needs to be repaired, the motor shaft 21 and the electric push rod 31 are controlled to align the laser cladding head 51 with the repair position, and the camera 512 can be used to find the missing cladding or uneven cladding at the first time, so as to reduce the waste of laser cladding powder and improve the efficiency of laser cladding repair.

[0064] In this embodiment, the laser cladding head 51 further includes a mounting seat 515, which has an inner cavity for placing the output end of the powder delivery hose 522. The mounting seat 515 is connected to the motor shaft 21 through a connecting rod 32 to drive the movement of the laser cladding head 51. The connecting rod assembly 3 is connected to the laser cladding head 51 through bolts, as shown in the attached Figure 1 As shown, the connecting rod 32 is provided with a connecting rod bolt hole at the connection with the laser cladding head 51, which corresponds to the size of the mounting seat bolt hole provided on the mounting seat 515 of the laser cladding head 51. The connecting rod 32 and the laser cladding head 51 are detachably fixedly connected by passing bolts through and tightening the connecting rod bolt hole and the mounting seat bolt hole. In some practical application scenarios, such as the powder spraying head 513 of the laser cladding head 51 is blocked, the camera 512 fails, the laser head 511 is maintained and replaced, etc., the laser cladding head 51 can be disassembled for repair or replacement, and then reinstalled by bolts.

[0065] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A laser cladding device based on a high-pressure steam combined valve, characterized in that: It includes a laser clad base for fixing to a high pressure steam union valve; A motor, fixed on the high-pressure steam combined valve through the laser cladding base, comprising a motor shaft, the axis of which can coincide with the axis of the joint surface of the high-pressure steam combined valve; A connecting rod assembly, fixedly connected to the motor shaft, capable of rotating forward or reversely with the motor shaft relative to the joint surface of the high-pressure steam combined valve; An electronic assembly, including a control circuit board, for connecting to the motor; A laser cladding assembly is arranged at the end of the connecting rod assembly, and includes a laser cladding head and a powder feeding mechanism. The powder feeding mechanism includes a powder feeding hose and a powder box arranged at the top end of the laser cladding base. The powder feeding hose connects the powder box and the laser cladding head. The length of the powder feeding hose meets the distance requirement when the laser cladding head rotates forward or reversely with the connecting rod assembly relative to the joint surface of the high-pressure steam combined valve.

2. The laser cladding device based on a high-pressure steam combined valve according to claim 1 is characterized in that: The laser cladding base includes an annular body and a plurality of laser cladding base bolt holes, wherein the laser cladding base bolt holes are distributed on the annular body, and the center of the annular body has a space for the motor, the connecting rod assembly and the laser cladding assembly to pass through, and the number, distribution and size of the laser cladding base bolt holes are consistent with those of the high-pressure steam combined valve bolt holes.

3. The laser cladding device based on a high-pressure steam combined valve according to claim 2 is characterized in that: The laser cladding base also includes an electrical box and a support arm. The axis of the motor shaft passes through the electrical box. The support arm connects the annular body and the electrical box.

4. The laser cladding device based on a high-pressure steam combined valve according to claim 3 is characterized in that: The supporting force arm comprises a vertical portion and a horizontal portion connected to each other, the vertical portion is connected to the annular body, and the horizontal portion is connected to the electrical box.

5. The laser cladding device based on a high-pressure steam combined valve according to claim 3 is characterized in that: The electrical box has a cavity for accommodating the control circuit board, the upper surface of the electrical box is connected to the powder box, the lower surface of the electrical box has a circular hole, and the top of the motor is provided with an annular boss, which overlaps the outer circumference of the circular hole to fix the motor on the electrical box.

6. The laser cladding device based on a high-pressure steam combined valve according to claim 1 is characterized in that: The motor controls the rotation of the motor shaft through the control circuit board, and controls the cladding speed of the laser cladding head by adjusting the rotation speed of the motor shaft. The rotation modes of the motor shaft include forward rotation and reverse rotation.

7. The laser cladding device based on a high-pressure steam combined valve according to claim 1 is characterized in that: The connecting rod assembly comprises an electric push rod and a connecting rod, the connecting end of the electric push rod is connected to the motor, the movable end of the electric push rod is connected to the connecting rod, the motor shaft drives the electric push rod and the connecting rod to rotate by rotating, and the connecting rod adjusts the position height through the electric push rod; the connecting rod is a 7-shaped rod with a certain angle, and the connection method between the connecting rod and the motor shaft is a latch-type connection; Alternatively, the connecting rod is an inclined rod, and the connecting rod and the motor shaft are connected in a hinged manner.

8. The laser cladding device based on a high-pressure steam combined valve according to claim 7 is characterized in that: The electronic component also includes electric wires, and the electric wires include a first electric wire and a second electric wire. The first electric wire connects the laser cladding head and the control circuit board, and the second electric wire connects the electric push rod and the control circuit board. The first electric wire and the second electric wire are coated with a layer of hose on the periphery. The length of the first electric wire meets the distance requirement when the laser cladding head rotates forward or reversely with the connecting rod assembly relative to the joint surface of the high-pressure steam combined valve.

9. The laser cladding device based on a high-pressure steam combined valve according to claim 8 is characterized in that: The first electric wire and the second electric wire are distributed on both sides of the axis of the laser cladding base.

10. The laser cladding device based on a high-pressure steam combined valve according to claim 1, characterized in that: The laser cladding head includes a laser head, a camera, a powder spray head and a powder sprayer on one side away from the axis of the laser cladding base. The powder spray head is connected to the powder delivery hose through the powder sprayer. The laser cladding head rotates to a set angle under the action of the motor to perform laser cladding repair on the valve body of the high-pressure steam combined valve.

Images