Combined boring tool for valve body and valve of pumped storage power station

Abstract

The invention provides a valve body and valve combined boring tool for a pumped storage power station, and relates to the field of valve body machining, the valve body and valve combined boring tool comprises a base, one end of the base is fixedly connected with a vertical seat, the base is provided with a machining seat, the side walls of the two sides of the machining seat are fixedly connected with outer supporting plates, and two mounting plates are symmetrically arranged between the two outer supporting plates; and a push-out assembly is arranged on the vertical seat. The boring piece is driven to enter the supporting hole in one end of the valve, the valve body plane milling cutter on the main tool rest bores and mills the exterior of the valve body supporting hole, the valve body inner hole boring cutter on the auxiliary tool rest bores and mills the interior of the valve body supporting hole, and the valve body inner hole boring cutter can conduct finish machining on the connecting end of a valve supporting shaft. The rough machining and the finish machining between the valve shaft and the valve body are completed at a time through the boring piece, the machining efficiency is improved, and the precision error risk possibly caused by step-by-step machining is well reduced through the cooperative machining mode.

Description

Technical Field

[0001] The invention relates to the field of valve body processing, in particular to a combined boring tool for valve body valves of a pumped storage power station. Background Art

[0002] In the construction, operation and maintenance of pumped storage power stations, valve bodies and valves are key components, and their processing accuracy and quality are directly related to the reliability and stability of the entire system. Traditional valve body and valve processing methods have many thorny problems.

[0003] On the one hand, since it is difficult to perform fine machining on the valve before installing it into the valve body, it is usually necessary to carry out machining operations after the valve body and the valve are welded together. However, after welding, the valve is inside the valve body, and the machining space of its two supporting shafts and the closing water inlet surface is limited, and the machining difficulty increases exponentially. For example, during the cutting process, the accessibility of the tool becomes worse, and the limited operating space makes it difficult to optimize the cutting parameters, resulting in low machining efficiency.

[0004] On the other hand, it is difficult to ensure the concentricity of the two support shafts with traditional processing methods, and the closed water inlet surface after processing is often not parallel to the center of the two support shafts. This series of precision defects makes it very easy for the valve body valve to be stuck in the subsequent use. In severe cases, it will directly cause it to get stuck and unable to open and close normally, greatly affecting the operating efficiency of the pumped storage power station. At the same time, the sealing performance is damaged, and a large number of water leaks occur frequently, which not only causes energy waste, but may also cause secondary problems such as equipment corrosion and water damage to other components, increasing operation and maintenance costs and system failure risks.

[0005] Therefore, it is necessary to provide a new combined boring tool for the valve body and valve of a pumped storage power station to solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a combined boring tool for valve body and valve of a pumped storage power station.

[0007] The present invention provides a combined boring tool for the valve body of a pumped storage power station, comprising: a base, one end of the base being fixedly connected to a stand, the base being provided with a processing seat, both side walls of the processing seat being fixedly connected to outer support plates, two mounting plates being symmetrically provided between the two outer support plates, the stand being provided with an ejection assembly, the moving end of the ejection assembly being installed and connected to a main motor; a high-efficiency boring mechanism, the high-efficiency boring mechanism comprising a boring piece, one end of the boring piece being provided with a boring rod connecting frame, the boring rod connecting frame being fixedly connected to the output end of the main motor, one end of the boring piece being an outer sleeve, one end of the outer sleeve being connected to the boring rod connecting frame, the other end of the outer sleeve being fixedly connected to an inner sleeve, the outer sleeve being provided with an outer boring assembly, and the inner sleeve being provided with an inner boring assembly.

[0008] Preferably, the outer boring assembly comprises a main tool holder, the main tool holder is fixedly connected to the outer wall of the outer sleeve, and a valve body surface milling cutter is fixedly connected to the main tool holder.

[0009] Preferably, the internal boring assembly includes an auxiliary tool holder, which is fixedly connected to the outer wall of the inner sleeve, and a boring valve body inner hole cutter is fixedly connected to the auxiliary tool holder, and a boring valve outer circular cutter is fixedly connected to the auxiliary tool holder, and the boring valve body inner hole cutter and the boring valve outer circular cutter are staggered.

[0010] Preferably, a plurality of bore holes are symmetrically provided on the tube walls of the outer sleeve and the inner sleeve.

[0011] Preferably, an upper electric cylinder is mounted and connected on the stand, and a boring and milling head is mounted and connected at the telescopic end of the upper electric cylinder.

[0012] Preferably, a cavity is provided inside the processing seat, and the two ends of the cavity extend to the interior of the two outer support plates respectively, and the two ends of the cavity are provided with through grooves, and the lower ends of the two mounting plates are provided with convex plates, and the two convex plates are respectively slidably connected to the two through grooves, and the interior of the cavity is rotatably connected with a built-in shaft, one end of the built-in shaft extends to the outside of the cavity, and a wheel is installed and connected to one end of the built-in shaft, and the two ends of the built-in shaft are symmetrically provided with threads in opposite directions, and the two convex plates are provided with threaded openings, and the two convex plates are respectively threadedly connected to the two ends of the two built-in shafts.

[0013] Preferably, a main shaft is fixedly connected to the lower end seat wall of the processing seat, the main shaft is rotatably connected to the base, a large gear is fixedly connected to the main shaft, an auxiliary motor is installed and connected at the lower end of the base, a small gear is fixedly connected to the output end of the auxiliary motor, the small gear is flush with the large gear, and the small gear and the large gear are meshed with each other.

[0014] Preferably, two embedded grooves are symmetrically provided on the side wall of the processing seat, and embedded sheets are installed and connected in the two embedded grooves. An alignment seat is provided at the other end of the base, and the alignment seat is flush with the two embedded grooves. A visual sensor is installed and connected on the alignment seat.

[0015] Compared with the related art, the combined boring tool for the valve body and valve of a pumped storage power station provided by the present invention has the following beneficial effects:

[0016] 1. The present invention controls the ejection assembly to drive the main motor to move and extend, and the boring piece at the output end of the main motor enters the support hole at one end of the valve. The outer sleeve of the boring piece drives the main tool holder to rotate, so that the valve body plane milling cutter on the main tool holder boring and milling the outside of the valve body support hole, and its inner sleeve drives the auxiliary tool holder to rotate, and the valve body inner hole boring cutter on the auxiliary tool holder boring and milling the inside of the valve body support hole, and the valve outer circular cutter can perform fine processing on the connecting end of the valve support shaft, so that the boring piece is used to complete the rough and fine processing between the valve shaft and the valve body at one time, thereby improving the processing efficiency. After that, the boring and milling head is controlled to enter the boring hole match, and the valve shaft support hole processing on the valve body can be completed at the same time. This collaborative processing method well reduces the accuracy error risk that may be caused by step-by-step processing;

[0017] 2. The present invention rotates the valve to a fully closed state and adjusts the gap before annealing the valve body and the valve after welding, and then uses a process connecting plate to weld and fix the valve body and the valve firmly at the upstream and downstream side ports of the valve body, thereby ensuring that the center of the support hole between the two shafts of the valve and the valve body remains coaxial and concentric, which can effectively prevent the problems of the two supporting shafts not being processed concentrically during boring processing, the valve closing water inlet surface not being parallel to the two supporting shafts, and avoid the switch being stuck, stuck, and a large amount of water leakage due to processing misalignment;

[0018] 3. The present invention drives the built-in shaft to rotate relative to the inside of the cavity by controlling the wheel disc, drives the two convex plates to slide stably relative to the two through grooves, and then drives the two mounting plates to move to appropriate positions, and fixes the two process connection plates on the two mounting plates respectively. The adjustable mounting plates can be used to fasten and lock valves of different specifications with the internal valves, which is convenient for subsequent boring processing, and greatly improves the flexibility and versatility of the tooling, so that it can be used for processing valve bodies of different specifications;

[0019] 4. The present invention uses an auxiliary motor to drive the small gear to rotate at its output end, driving the large gear meshing with it to rotate accordingly, and uses the main shaft to drive the processing seat to rotate relative to the base. The embedded piece on the side wall of the processing seat rotates accordingly and is aligned with the visual sensor. The rotation of the processing seat can be automatically controlled, and the other supporting hole on the valve body is adjusted to rotate to the processing position, so as to quickly complete the boring processing of the supporting holes on both sides of the valve body, which is not only efficient but also can well maintain the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment provided by the present invention;

[0021] Figure 2 for Figure 1 A structural schematic diagram of a high-efficiency boring mechanism of a preferred embodiment is shown;

[0022] Figure 3 for Figure 2 A schematic cross-sectional structure diagram of a preferred embodiment is shown;

[0023] Figure 4 for Figure 2 The structural schematic diagram of the boring part shown;

[0024] Figure 5 for Figure 1 The structural schematic diagram of the automatic adjustment mechanism shown;

[0025] Figure 6 for Figure 5 A schematic diagram of the structure of the control component shown;

[0026] Figure 7 for Figure 1 Schematic diagram of the structure of the automatic calibration component shown.

[0027] Numbers in the figure: 1. Base; 11. Stand; 2. Processing seat; 21. Outer support plate; 22. Mounting plate; 3. Ejection assembly; 31. Main motor; 4. Boring piece; 41. Boring rod connecting frame; 42. Outer sleeve; 43. Inner sleeve; 5. Main tool holder; 51. Valve body surface milling cutter; 52. Auxiliary tool holder; 53. Boring valve body inner hole cutter; 54. Boring valve outer circular cutter; 6. Boring hole matching; 61. Upper electric cylinder; 62. Boring and milling head; 7. Through groove; 71. Convex plate; 72. Built-in shaft; 73. Wheel; 8. Main shaft; 81. Large gear; 82. Auxiliary motor; 83. Small gear; 9. Inlaid sheet; 91. Alignment seat; 92. Visual sensor. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0029] Please refer to Figures 1 to 7 A combined boring tool for a valve body of a pumped storage power station comprises: a base 1, one end of the base 1 is fixedly connected to a stand 11, a processing seat 2 is provided on the base 1, both side walls of the processing seat 2 are fixedly connected to outer support plates 21, two mounting plates 22 are symmetrically provided between the two outer support plates 21, an ejection assembly 3 is provided on the stand 11, and a main motor 31 is installed and connected at the moving end of the ejection assembly 3; an efficient boring mechanism, the efficient boring mechanism comprises a boring piece 4, one end of the boring piece 4 is provided with a boring rod connecting frame 41, the boring rod connecting frame 41 is fixedly connected to the output end of the main motor 31, one end of the boring piece 4 is an outer sleeve 42, one end of the outer sleeve 42 is connected to the boring rod connecting frame 41, the other end of the outer sleeve 42 is fixedly connected to an inner sleeve 43, the outer sleeve 42 is provided with an outer boring assembly, and the inner sleeve 43 is provided with an inner boring assembly.

[0030] In the specific implementation process, Figure 2 and Figure 4 As shown, the external boring assembly includes a main tool holder 5 , which is fixedly connected to the outer wall of the outer sleeve 42 , and a valve body surface milling cutter 51 is fixedly connected to the main tool holder 5 .

[0031] It should be noted that: the control push-out assembly 3 drives the main motor 31 to move and extend, and the boring member 4 at the output end of the main motor 31 moves into the support hole at one end of the valve, and the outer sleeve 42 of the boring member 4 cooperates with the inner sleeve 43 to perform boring and milling processing on the inside and outside of the valve body support hole and the valve support shaft, so that the boring member 4 can be used to complete the rough and fine processing between the valve shaft and the valve body at one time;

[0032] The outer sleeve 42 of the boring member 4 drives the main tool holder 5 to rotate, so that the valve body surface milling cutter 51 on the main tool holder 5 can perform boring and milling processing on the outside of the valve body support hole;

[0033] After the valve body and the valve are firmly welded and fixed by the process connection plate, the two axes of the valve and the center of the support hole between the valve body are ensured to remain coaxial and concentric. This effectively avoids the problem that the two support axes are not processed concentrically during the boring process, and the closing water inlet surface of the valve is not parallel to the center of the two support axes.

[0034] refer to Figure 4 As shown, the internal boring assembly includes an auxiliary tool holder 52, which is fixedly connected to the outer wall of the inner sleeve 43, a boring valve body inner hole cutter 53 is fixedly connected to the auxiliary tool holder 52, and a boring valve outer circular cutter 54 is fixedly connected to the auxiliary tool holder 52, and the boring valve body inner hole cutter 53 and the boring valve outer circular cutter 54 are staggered.

[0035] It should be noted that: the inner sleeve 43 of the boring member 4 drives the auxiliary tool holder 52 to rotate, so that the valve body inner hole boring tool 53 on the auxiliary tool holder 52 performs boring and milling processing on the inside of the valve body support hole;

[0036] The valve outer circular boring cutter 54 on the auxiliary tool holder 52 can perform fine machining on the connecting end of the valve support shaft.

[0037] refer to Figure 3 and Figure 4 As shown, a plurality of bore openings 6 are symmetrically provided on the tube walls of the outer sleeve 42 and the inner sleeve 43 .

[0038] It should be noted that: by using the multiple boring ports 6 on the walls of the outer sleeve 42 and the inner sleeve 43, further boring processing can be performed on the valve shaft support hole without repositioning and assembling after boring and milling, which is very fast and efficient.

[0039] refer to Figure 1 As shown, an upper electric cylinder 61 is installed and connected to the stand 11 , and a boring and milling head 62 is installed and connected at the telescopic end of the upper electric cylinder 61 .

[0040] It should be noted that: by controlling the upper electric cylinder 61 to drive the boring and milling head 62 to enter the boring hole 6, the valve shaft support hole on the valve body can be bored at the same time, and it can be effectively ensured that during the boring process, the concentricity between the two shafts of the valve and the center of the valve body support hole will not be affected.

[0041] refer to Figure 1 and Figure 5 As shown, a cavity is provided inside the processing seat 2, and the two ends of the cavity extend to the interior of the two outer support plates 21 respectively. A through groove 7 is provided at both ends of the cavity. A convex plate 71 is provided at the lower end of the two mounting plates 22. The two convex plates 71 are respectively slidably connected to the two through grooves 7. A built-in shaft 72 is rotatably connected inside the cavity. One end of the built-in shaft 72 extends to the outside of the cavity. A wheel disc 73 is installed and connected to one end of the built-in shaft 72. Threads in opposite directions are symmetrically provided at both ends of the built-in shaft 72. Threaded openings are provided on the two convex plates 71. The two convex plates 71 are respectively threadedly connected to the two ends of the two built-in shafts 72.

[0042] It should be noted that the control wheel 73 drives the built-in shaft 72 to rotate relative to the inside of the cavity, driving the two convex plates 71 to slide stably relative to the two through grooves 7, so that the two mounting plates 22 are driven to move to suitable positions, and the two process connecting plates are fixedly installed on the two mounting plates 22 respectively. The two adjustable mounting plates 22 can be used to fasten and lock valve bodies of different specifications and the valves inside them, so as to facilitate subsequent further boring processing.

[0043] refer to Figure 5 and Figure 6 As shown, a main shaft 8 is fixedly connected to the lower end seat wall of the processing seat 2, and the main shaft 8 is rotatably connected to the base 1. A large gear 81 is fixedly connected to the main shaft 8. An auxiliary motor 82 is installed and connected at the lower end of the base 1. A small gear 83 is fixedly connected to the output end of the auxiliary motor 82. The small gear 83 is flush with the large gear 81, and the small gear 83 and the large gear 81 are meshed with each other.

[0044] It should be noted that: starting the auxiliary motor 82 causes its output end to drive the small gear 83 to rotate, driving the large gear 81 meshing with it to rotate accordingly, and using the main shaft 8 to drive the processing seat 2 to rotate relative to the base 1, so that the processing seat 2 rotates and drives the valve body to adjust its position, so as to automatically realize the processing of the valve body.

[0045] refer to Figure 1 and Figure 7 As shown, two embedded grooves are symmetrically provided on the side wall of the processing seat 2, and embedded sheets 9 are installed and connected in the two embedded grooves. A positioning seat 91 is provided at the other end of the base 1, and the positioning seat 91 is flush with the two embedded grooves. A visual sensor 92 is installed and connected on the positioning seat 91.

[0046] It should be noted that after the embedded piece 9 on the side wall of the processing seat 2 rotates and aligns with the visual sensor 92, the rotation of the processing seat 2 can be automatically controlled, and the other supporting hole on the valve body can be adjusted to rotate to the processing position, so as to quickly complete the boring processing of the supporting holes on both sides of the valve body, which is not only efficient but also maintains the processing accuracy.

[0047] The working principle of the combined boring tool for the valve body and valve of a pumped storage power station provided by the present invention is as follows: before processing the valve body, place it on the processing seat 2, and before the valve body and the valve are annealed after welding, turn the valve to adjust it to a fully closed state, and adjust the gap at the same time. At the upstream and downstream side ports of the valve body, use the process connecting plate to weld and fix the valve body and the valve firmly, and ensure that the two axes of the valve and the center of the support hole between the valve body remain coaxial and concentric. It effectively avoids the problem that the two support shafts are not processed concentrically during the boring process, and the closing water inlet surface of the valve is not parallel to the center of the two support shafts, and well solves the problem that the switch is stuck or even stuck and leaks a lot due to processing misalignment.

[0048] The valve body and valve are annealed to relieve welding stress. The support rings on the two valve shafts can be directly removed, and since the valve body and valve are firmly welded at the inlet and outlet, the removal of the support ring will not affect the concentricity of the two shafts of the valve and the center of the valve body support hole.

[0049] At the same time, the control wheel 73 drives the built-in shaft 72 to rotate relative to the inside of the cavity, driving the two convex plates 71 to slide stably relative to the two through grooves 7, so that the two mounting plates 22 are moved to suitable positions, and the two process connecting plates are fixedly installed on the two mounting plates 22 respectively. The two adjustable mounting plates 22 can be used to fasten and lock valve bodies of different specifications and the valves inside them, so as to facilitate subsequent further boring processing.

[0050] After the two support rings are taken out, the valve body is aligned, and then the push-out assembly 3 is controlled to drive the main motor 31 to move and extend accordingly. The boring piece 4 at the output end of the main motor 31 moves into the support hole at one end of the valve, and the outer sleeve 42 of the boring piece 4 drives the main tool holder 5 to rotate, so that the valve body surface milling cutter 51 on the main tool holder 5 can bore and mill the outside of the valve body support hole. At the same time, the inner sleeve 43 of the boring piece 4 drives the auxiliary tool holder 52 to rotate, so that the valve body inner hole boring cutter 53 on the auxiliary tool holder 52 can bore and mill the outside of the valve body support hole. The inside of the support hole is bored and milled, and the valve external circular boring cutter 54 on the auxiliary tool holder 52 can perform fine processing on the connecting end of the valve support shaft, so that the rough and fine processing between the valve shaft and the valve body can be completed at one time by using the boring part 4, and then the upper electric cylinder 61 is controlled to drive the boring and milling head 62 to enter the boring port 6, so that the valve shaft support hole on the valve body can be processed at the same time, effectively ensuring that there is no influence on the concentricity between the two shafts of the valve and the center of the valve body support hole during the boring process.

[0051] Then, the auxiliary motor 82 is started to make its output end drive the small gear 83 to rotate, driving the large gear 81 meshing with it to rotate accordingly, and the main shaft 8 is used to drive the processing seat 2 to rotate relative to the base 1. The embedded piece 9 on the side wall of the processing seat 2 rotates accordingly and is aligned with the visual sensor 92. The rotation of the processing seat 2 can be automatically controlled, and the other supporting hole on the valve body is adjusted to rotate to the processing position, so as to quickly complete the boring processing of the supporting holes on both sides of the valve body, which is not only efficient but also maintains the processing accuracy.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A combined boring tool for valve body and valve of pumped storage power station, characterized in that: include: A base (1), one end of the base (1) is fixedly connected to a stand (11), a processing seat (2) is provided on the base (1), both side walls of the processing seat (2) are fixedly connected to outer support plates (21), two mounting plates (22) are symmetrically arranged between the two outer support plates (21), an ejection assembly (3) is provided on the stand (11), and a main motor (31) is installed and connected at the moving end of the ejection assembly (3); A high-efficiency boring mechanism comprises a boring member (4), one end of the boring member (4) is provided with a boring rod connecting frame (41), the boring rod connecting frame (41) is fixedly connected to the output end of a main motor (31), one end of the boring member (4) is an outer sleeve (42), one end of the outer sleeve (42) is connected to the boring rod connecting frame (41), the other end of the outer sleeve (42) is fixedly connected to an inner sleeve (43), the outer sleeve (42) is provided with an outer boring assembly, and the inner sleeve (43) is provided with an inner boring assembly.

2. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: The external boring assembly comprises a main tool holder (5), the main tool holder (5) is fixedly connected to the outer wall of the outer sleeve (42), and a valve body surface milling cutter (51) is fixedly connected to the main tool holder (5).

3. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 2, characterized in that: The internal boring assembly comprises an auxiliary tool holder (52), the auxiliary tool holder (52) being fixedly connected to the outer wall of the inner sleeve (43), a boring valve body inner hole cutter (53) being fixedly connected to the auxiliary tool holder (52), a boring valve outer circular cutter (54) being fixedly connected to the auxiliary tool holder (52), and the boring valve body inner hole cutter (53) and the boring valve outer circular cutter (54) being staggered.

4. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: The outer sleeve (42) and the inner sleeve (43) are both symmetrically provided with a plurality of bore holes (6) on their walls.

5. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: An upper electric cylinder (61) is installed and connected to the stand (11), and a boring and milling head (62) is installed and connected to the telescopic end of the upper electric cylinder (61).

6. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: A cavity is provided inside the processing seat (2), and two ends of the cavity extend to the inside of the two outer support plates (21) respectively. A through groove (7) is provided at both ends of the cavity. A convex plate (71) is provided at the lower end of the two mounting plates (22). The two convex plates (71) are slidably connected to the two through grooves (7) respectively. A built-in shaft (72) is rotatably connected inside the cavity. One end of the built-in shaft (72) extends to the outside of the cavity. A wheel disc (73) is installed and connected to one end of the built-in shaft (72). Threads in opposite directions are symmetrically provided at both ends of the built-in shaft (72). Threaded openings are provided on the two convex plates (71). The two convex plates (71) are respectively threadedly connected to the two ends of the two built-in shafts (72).

7. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: A main shaft (8) is fixedly connected to the seat wall at the lower end of the processing seat (2), the main shaft (8) is rotatably connected to the base (1), a large gear (81) is fixedly connected to the main shaft (8), an auxiliary motor (82) is installed and connected at the lower end of the base (1), a small gear (83) is fixedly connected to the output end of the auxiliary motor (82), the small gear (83) is flush with the large gear (81), and the small gear (83) and the large gear (81) are meshed with each other.

8. The combined boring tool for valve body and valve assembly of a pumped storage power station according to claim 1, characterized in that: Two embedded grooves are symmetrically arranged on the side wall of the processing seat (2), and embedded sheets (9) are installed and connected in the two embedded grooves. A positioning seat (91) is arranged at the other end of the base (1), and the positioning seat (91) is flush with the two embedded grooves. A visual sensor (92) is installed and connected on the positioning seat (91).

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