Water turbine runner positioning, assembling and welding method based on wedge-shaped auxiliary devices

[0045] Example 1

[0046] This example discloses a water turbine wheel positioning welding method based on a wedge-shaped auxiliary device 4, as a basic embodiment of the present invention, is a positioning welding welding of a rotator using a flip-oriented, including a member processing, and a wedge-shaped shape. Auxiliary device 4, component positioning and component assembly.

[0047] The components are processed: all constituent members of the rotary wheel are machined by the CNC machine tool, and all of the constituent members of the wheel, the constituent members include upper crown leaf disc 1, inner ring leaf disc 2, and outer loop 3; During the processing of each component, a plurality of mounted pin holes are machined on the upper crown blade disk 1, and the positioning pin is machined on the inner cycloid disc 2 and the outer loop 3, and the logo record or the steel print number is machined. Ways, the pin hole is corresponding to the positioning pin. That is, all the components and the auxiliary structure (specific means pin and positioning pin) required for assembly are machined under the same machining reference, ensuring relative precision between each component member, which is a later high-precision positioning. The welding laying a reliable basis.

[0048] The mounting wedge-shaped auxiliary device 4 is prepared, and a plurality of wedge-shaped auxiliary devices 4 are prepared along the circumferential spacer in the upper collar disk 1 and mounted in the flow path of the upper crown leaf disc 1. Wherein, the finding is specifically flattened by the level.

[0049] The component is positioned: the upper crown leaf disk 1 is transported to the assembly platform and the upper crown blade disk 1 is fixed on the assembly platform.

[0050] The component assembly includes the following steps:

[0051] a. The inner ring disc 2 is transferred to the upper crown leaf disk 1, and the inner loop plate 2 is corresponding to the corresponding positioning pin on the upper crown leaf disk 1 according to the identification recording or steel print number, and the inner ring plate 2 is passed. Placed on the upper crown leaf disc 1 to determine the radial relative positional relationship between the inner cyclic disc 2 and the upper crown leaf disc 1;

[0052] b. The height of the inner ring disc 2 is adjusted by adjusting the wedge-shaped auxiliary device 4 and the radial parallelism of the inner ring disc 2 and the upper crown leaf disk 1; after the opening height and the parallelism requirement, the inner ring plate 2 is The upper crown leaf plate 1 performs positioning welding; Within 0.1mm;

[0053] C. The outer loop disc 3 is transferred to the upper crown leaf disk 1 and the inner ring disc 2, and the pin hole of the inner ring disc 2 is corresponding to the corresponding positioning pin on the upper crown leaf disc 1 according to the identification recording or steel print number. Place the outer loop disc 3 on the upper crown leaf disc 1 to determine the radial relative positional relationship between the outer loop disc 3 and the upper crown leaf disc 1;

[0054] d. By adjusting the wedge-shaped auxiliary device 4 to adjust the opening height of the outer loop disc and the radial direction of the inner ring plate 2 and the upper crown leaf disc 1, the outer cycloid disc 3 is satisfied. Positioning welding with the upper crown leaf disc 1; Within 0.1mm;

[0055] e. The assembly member is welded according to the structure of the rotary, and the solder cooling is waited.

[0056] f. The wedge-shaped auxiliary device 4 is disassembled from the upper crown blade plate 1, i.e., the positioning welding of the entire runner is accomplished.

[0057] The technical solution uses innovative rotary vaporial disc manufacturing technology, directly dividing the runner into the upper crown leaf disc 1, the inner ring leaf disc 2 and the outer loaf disc 3, replacing the traditional rotary wheel The manufacturing technology of the upper crown, blade, and lower ring broke through the bottleneck assembled and welded, and the proposition of the pilot and positioning pins were allocated with the projection positioning. And all the components and the auxiliary structure required for assembly (specifically pin holes and positioning pins) are machined under the same machining reference. In summary, this technical plan not only simplifies the assembly process, but also maximizes the assembly error to ensure assembly accuracy.

[0058] In this technical solution, the positioning welding of the rotary plate 2 and the inverted sequence of the inner cycloid disk 2 and the outer loop 2 and the outer ring disc 3 are assembled, and the wedge-shaped auxiliary device 4 is used to adjust the adjustment. And accurately controlling the size of the components, that is, not only the adjustment efficiency is improved, but also accurately control the tolerance; additionally, under the support of the wedge-shaped auxiliary device 4, it is effective to compensate for the welding and receive shrinkage, which greatly increases the turbine rotor. Welding precision.

[0059] Example 2

[0060] This example discloses a water turbine wheel positioning welding method based on a wedge-shaped auxiliary device 4, as a preferred embodiment of the present invention, a positioning welding welding of a rotator in a flip sequence, including a member processing, and a wedge-shaped assistant Device 4, component positioning, and component assembly.

[0061] Configuration: The components of the uniform machining benchmark are set by the CNC machine tool, and all of the constituent members of the wheel is machined, and the constituent members include upper crown leaf disc 1, inner cyclic tray 2, and outer loop 3; During the processing of the component, a plurality of mounted pin holes are machined on the upper crown blade disk 1, and the positioning pin is machined on the inner cycloid disk 2 and the outer loop disc 3, and by doing identifying the logo record or the steel print number, The pin hole corresponds to the positioning pin.

[0062] Installing the wedge-shaped auxiliary device 4: When the wedge-shaped auxiliary device 4 is prepared, when the crown leaf disk 1 is processed, in the flow path processing step of the upper tube disc, the wedge-shaped auxiliary device is reserved in the flow path by three-dimensional shape and CNC programming. The boss structure 5, the number of bosses structures 5 corresponds to the wedge-shaped assist device 4, and according to the arrangement of the wedge-shaped auxiliary device 4, all boss structures 5 along the circumferential interval between the upper crown leaf plates 1 The flow path. The wedge-shaped auxiliary device 4 is then mounted one by one or one by one of the bosses, to ensure the plane of the subsequent assembly positioning reference surface, and the wedge-shaped auxiliary device 4 is added in the upper crown blade 1 and the flow channel CNC machining step. The machining step is performed on the upper surface of the wedge-shaped auxiliary device 4 based on the machining reference based on the machining reference.

[0063] Further, the boss structure 5 includes an inner ring boss 5.2, an inner ring boss 5.1 and an outer loop boss 5.2 are relatively presence; the so-called inner loop boss 5.1, that is, used to regulate the inner ring leaves The boss structure 5 of the disc 2 is in the inner circle of the center of the above crown leaf disk 1, the radius of the inner circle is smaller than the radius of the inner cyclic tray 2, and there are several inner rings on the interval interval. Bear 5.1 to satisfy the stable support requirements of the inner cyclic disc 2; the so-called outer ring boss 5.2, that is, the boss structure 5 for adjusting the outer loop 3, in one axis of the above crown leaf disk 1. For the outer circle of the center, the radius of the inner circle is larger than the radius of the inner cyclic tray 2, which is smaller than the radius of the outer loop 3, and the outer ring boss 5.2 is provided on the outer ring boss 5.2 to satisfy the inner ring. The stable support needs of the disc 2.

[0064] Component positioning: Transport on the upper crown imaging plate 1 to the assembly platform, and fix the upper crown leaf disk 1 on the assembly platform.

[0065] Component assembly includes the following steps:

[0066] a. The inner ring disc 2 is transferred to the upper crown leaf disk 1, and the inner loop plate 2 is corresponding to the corresponding positioning pin on the upper crown leaf disk 1 according to the identification recording or steel print number, and the inner ring plate 2 is passed. Placed on the upper crown leaf disc 1 to determine the radial relative positional relationship between the inner cyclic disc 2 and the upper crown leaf disc 1;

[0067] b. The height of the inner ring disc 2 is adjusted by adjusting the wedge-shaped auxiliary device 4 and the radial parallelism of the inner ring disc 2 and the upper crown leaf disk 1; after the opening height and the parallelism requirement, the inner ring plate 2 is The upper crown leaf plate 1 performs positioning welding; Within 0.1mm;

[0068] C. The outer loop disc 3 is transferred to the upper crown leaf disk 1 and the inner ring disc 2, and the pin hole of the inner ring disc 2 is corresponding to the corresponding positioning pin on the upper crown leaf disc 1 according to the identification recording or steel print number. Place the outer loop disc 3 on the upper crown leaf disc 1 to determine the radial relative positional relationship between the outer loop disc 3 and the upper crown leaf disc 1;

[0069] d. By adjusting the wedge-shaped auxiliary device 4 to adjust the opening height of the outer loop disc and the radial direction of the inner ring plate 2 and the upper crown leaf disc 1, the outer cycloid disc 3 is satisfied. Positioning welding with the upper crown leaf disc 1; Within 0.1mm;

[0070] e. The assembly member is welded according to the structure of the rotary, and the solder cooling is waited.

[0071] f. The boss structure 5 is applied using the flow path surface of the upper crown blade 1 to remove the boss structure 5 and the wedge-shaped auxiliary device 4 from the upper crown leaf disk 1, i.e., positioning welding of the entire rotator.

[0072] In this technical solution, in the flow path machining step of the upper tube disc, the boss structure 5 for mounting the wedge-shaped auxiliary device 4 is reserved in the flow path by three-dimensional shape and CNC programming, and the arrangement position of the auxiliary device is determined. The installation of the device provides convenience; further, an inner ring boss 5.1 structure 5 and an outer loop boss 5.2 structure 5, and the outer loop boss 5.2 structure 5, and avoid the assembly of the inner loop plate 2. The assembly work of the outer ring leaf disc 3 is interacting.

[0073] Example 3

[0074] This example discloses a water turbine wheel positioning welding method based on a wedge-shaped auxiliary device 4, as a preferred embodiment of the present invention, a positioning welding welding of a rotator in a flip sequence, including a member processing, and a wedge-shaped assistant Device 4, component positioning, and component assembly.

[0075]The processing member: CNC machine tool by setting uniform machining datum, all the component members of the working wheel in working reference, including crown leaf disk 1, the inner ring 2 and the outer leaf disc leaf disk 3; in the machine during crown leaf discs 1, the processing step in the flow channel tube blisk by three-dimensional modeling and numerical control programming, the upper machining disk 1 leaf crown plurality of pin mounting holes and spaces for mounting the wedge in the flow channel aid boss structure 54; and according to layout requirement wedge support device 4, all the boss structure 5 along the crown leaf discs week to the spacing in the crown leaf disk flow channel 1; the inner leaf disc 2 and processing the outer leaf disc positioning pins 3, and by doing identification number stamp record or play mode, the pin-one correspondence with the positioning pin holes.

[0076] Auxiliary wedge apparatus 4 is mounted: a plurality of wedge-shaped support device ready 4. Wherein the auxiliary wedge apparatus comprising a wedge-shaped base 4 4.1, 4.2 and two-way slider wedge adjustment screw 4.3, 4.1 at the top end of the wedge-shaped base provided with a limit webs 4.4; 4.2 slider wedge is provided at the top of the slider wedge 4.2, and 4.1 of the wedge base mating wedge; includes 4.3 two-way adjustment screw "I" connection 4.3.1, "I" connection limit 4.3.1 web through 4.4, and 4.4 is connected with the limit circumferential web activity; "I" One end of the connector is provided with an operation lever 4.3.1 4.3.2, "I" is connected to the other end piece is provided with a threaded rod 4.3.1 4.3.3 4.3.3 4.3 bidirectional adjustment screw and the wedge slide through the threaded rod 4.2 spiral active connections. All auxiliary wedge apparatus 4 mounted on the boss correspond structure 5, specifically, welding or the like can be installed. Preferably, the base is provided with a wedge-shaped for mating with the boss structure positioning groove 5 bottom 4.1.1 4.1, 4.1 of the base on both sides of the wedge are provided with a threaded hole communicating with the positioning groove 4.1.1, the helical aperture is provided for the wedge support device 4 and the boss structure fixed relative to the fastening bolt 5 4.5. When mounting the auxiliary wedge apparatus 4, the positioning groove 4.1 4.1.1 wedge base sleeved on the boss structure at the top 5, and then rotating the fastening bolt 4.5, 4.5 of the two fastening bolts cooperating with each other on the boss structure 5 extrusion, in order to achieve the wedge support device 4 is fixed to the convex structure on the table 5.

[0077] The positioning member: using a brush and / or cloth clear of dust, oil and impurities on the assembly platform, the upper crown leaf discs transported to the mounting plate 1, using the dial indicator crown leaf discs 1 alignment, to find crown positive leaf discs after 1, its plane to within 0.05mm, and then fixing the crown of the leaf disk 1 by fitting the internet.

[0078] Said mounting member comprising the steps of:

[0079] a. After the inner leaf discs 2 above the transported oriented crown leaf disks 1, so that the inner leaf disc and the corresponding pin holes 2 corresponding to the positioning pins on the upper crown 1 leaf disk recording according to the identification number or stamp, the inner leaf disc 2 crown placed on the leaf discs 1, to determine the relative positional relationship between the inner radial leaf disc 2 and the crown of the leaf disk 1.

[0080] b. By adjusting the adjustment wedge 2 4 aid parallelism with the crown radial leaf disk inner ring 1 and the inner leaf disc height leaf disc 2; open file to be satisfied after the height and parallelism required, the leaf discs of the inner ring 2 and crown positioning welding leaf disc 1;. Specifically, the bidirectional rotation of the operating lever adjustment screw 4.3.2 4.3, 4.2 the wedge slide moves on the inclined surface of the wedge base 4.1, the overall height of the auxiliary wedge apparatus 4 will change, during this period, and the inner wedge-shaped slider 4.2 leaf disk contact ring bottom 2 with the movement of the slider wedge 4.2, adjusted to realize the support of the inner leaf discs 2, wherein the adjusting means to ensure the accuracy of the auxiliary wedge 4, and the wedge of the slider wedge base 4.1 4.2 the slope tilt angle of 10 ° ~ 20 °. 2 is then detected with a feeler fitting clearance with the inner leaf disc plate 1 leaves the upper crown of each flow passage to measure the height and parallelism of open files, to ensure a uniform gap error is less than 0.1mm.

[0081] C. The outer ring 3 leaf disc oriented above the crown leaf disks transporting a leaf disc and the inner ring 2, after determining the relative positional relationship between two radial crown leaves inner leaf discs disc 1, the outer ring 3 is placed on the leaf disks 1 crown on the upper leaf discs.

[0082] d. After adjusting wedge support device 4 by adjusting the height of the outer ring 3 leaf discs of open files, and a radially inner ring 2 parallel leaf disc and the upper crown of the leaf disk 1, and the height of open files to be satisfied parallelism requirements, the outer ring 3 leaf discs tack welding to the upper crown for leaf disk 1; in particular, is still rotating the operating lever 4.3.2 4.3 bidirectional adjustment screw to adjust the overall height of the auxiliary wedge apparatus 4 to achieve adjustment and support the outer ring 3 of the leaf disk. 3 is then fitted with a feeler detecting the gap and the outer leaf disc plate 1 leaves the crown of each flow passage to measure the height and parallelism of open files, to ensure a uniform gap error is less than 0.1mm.

[0083] e. According to the structure of the respective wheel assembly of claim welding member, and waiting for the solder cools, the solder in the process of cooling, under wedge action of the auxiliary support means 4, to solve the problem of accuracy caused by shrinkage of the solder, i.e., an amount to achieve a weld shrinkage compensation.

[0084] f. Artificial crown leaf discs along the Surface grinding boss structure 1 5 to the boss structure 5 and the auxiliary wedge apparatus 4 together with the crown detached from the leaf disk 1, i.e., the completion of the positioning assembly and welding of the entire wheel.

[0085] Auxiliary wedge apparatus 4 used in the present aspect, easy to install, can be stably mounted and quickly by adjusting the two fastening bolts 4.5, easy and convenient adjustment, achieve two-way regulation adjusting screw 4.3, a person can operate, no more than length time collaboration several adjustments, can greatly reduce the wheel trim assembly process is repeated redundant work, largely reduced extent reduce the labor intensity, thereby improving the assembling efficiency, shorten the assembly cycle, and saving labor and assembly costs.