Supporting device for vertical assembly of gas turbine rotor

Abstract

The utility model discloses a supporting device for vertical assembly of a gas turbine rotor, and belongs to the field of machining. A supporting device for vertical assembly of a gas turbine rotor comprises two semi-circular ring type lower bases capable of being opened and closed in a rotating mode, a plurality of supporting columns are arranged on the lower bases, two corresponding semi-circular ring type upper bases capable of being opened and closed in a rotating mode are arranged on the supporting columns, two semi-circular ring type supporting plates are arranged on the upper bases, and the two semi-circular ring type supporting plates are arranged on the supporting columns. Four sliding grooves with the same shape are symmetrically formed in the supporting plate, a sliding block capable of sliding in the radial direction of the supporting plate is arranged in each sliding groove, a rear positioning block is arranged on the supporting plate, the rear positioning block is connected with a front positioning block arranged on the sliding block through a lead screw, and the positions of the sliding blocks are adjusted by rotating the lead screw. The supporting device is suitable for assembling and supporting 6F series gas turbine rotors, the front end interference problem can be solved, the assembling position can be adjusted, the supporting device is suitable for rotors of various sizes, and the universality is good.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing in the electric power energy industry, and in particular to a supporting device for vertical assembly of a gas turbine rotor. Background Art

[0002] The 6F series gas turbine rotor is an important component of the gas turbine. Its structure is shown in the figure below. Figure 1 As shown, when assembling this type of rotor, the discs of each stage need to be stacked upward in sequence, and finally the discs of each stage need to be connected. At present, the assembly of other conventional types of rotors generally involves standing the rotor upright, usually placing the rotor on a pit workbench with the front end face of the first stage (also called the front half shaft) as the support point, and stacking the discs in sequence for assembly operations. However, because the 6F series gas turbine rotor has front end interference, that is, the front end face diameter of the front half shaft of the rotor is larger, which is larger than the inner diameter of the workbench, it cannot be placed on the pit workbench for assembly operations, such as Figure 2 In addition, the pit workbench also has problems such as poor versatility and the inability to adjust the assembly position.

[0003] Therefore, there is an urgent need for a support device suitable for rotors with front end interference such as 6F series gas turbine rotors, which can support the rotor in the original position to achieve its assembly. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a support device for the vertical assembly of gas turbine rotors. The device is suitable for supporting 6F series gas turbine rotors and can solve the front end interference problem. The device can adjust the assembly position and is suitable for rotors of various sizes with good versatility.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A support device for vertical assembly of a gas turbine rotor comprises two rotatable semi-circular lower bases, a plurality of support columns are arranged on the lower bases, two corresponding rotatable semi-circular upper bases are arranged on the support columns, two semi-circular support plates are arranged on the upper bases, four slide grooves of the same shape are symmetrically arranged on the support plates, each slide groove is provided with a slider that can slide radially along the support plate, a rear positioning block is arranged on the support plate, the rear positioning block is connected to a front positioning block arranged on the slider through a screw rod, and the position of the slider is adjusted by rotating the screw rod.

[0007] A further technical solution is that the slider includes a block body and an inner arc-shaped contact portion arranged at the front end of the block body. The block body is provided with a plurality of strip-shaped through grooves along the sliding direction. The through grooves are provided with fixing screws that can slide back and forth. The fixing screws pass through the through grooves and the screw holes on the slide grooves in sequence to fasten the slider and the slide groove. By setting the strip-shaped through grooves and the fixing screws, the forward and backward sliding and locking of the slider can be achieved.

[0008] A further technical solution is that the front positioning block includes a positioning block body and a detachable sleeve. The positioning block body is provided with a through hole penetrating the positioning block body and a plurality of first mounting holes. The sleeve is arranged in the through hole, and the screw passes through the sleeve and is connected to the rear positioning block. The sleeve is composed of two sleeve halves with the same structure. The mounting hole cooperates with the screw to fix the front positioning block on the slider. The sleeve is detachable and easy to put into the through hole. At the same time, when the sleeve is removed, the screw can be used as a lifting device to support the rotor to adjust its center position to make the assembly more accurate.

[0009] According to a further technical solution, the front positioning block is arranged on the center line of the block.

[0010] According to a further technical solution, there are four through grooves, which are respectively located on both sides of the front positioning block to facilitate uniform sliding of the slider.

[0011] According to a further technical solution, the lower base is opened and closed by rotating one end of the two lower bases through a rotating pin and fixing the other end through a positioning pin. The pin facilitates the opening and closing of the lower bases, and the two lower bases are locked and fixed through the positioning pin after being aligned.

[0012] According to a further technical solution, the upper base is rotatably opened and closed by connecting one end of the two lower bases via a rotating pin and fixing the other end thereof via a positioning pin.

[0013] According to a further technical solution, a stop is provided on the top of the upper base for placing and positioning the support plate.

[0014] According to a further technical solution, the rear positioning block is provided with a screw screw hole for installing a screw and a plurality of second mounting holes, the rear positioning block is fixed to the support plate by screws cooperating with the second mounting holes, and a reinforcing rib is provided on one side of the rear positioning block to ensure its strength.

[0015] The utility model is symmetrically arranged with the middle dividing surface of the upper and lower bases as a whole, based on the upper and lower bases that can be rotated and opened, and a slider that can slide back and forth is arranged on the support plate, each slider is independent, and each slider is adjusted in position by a screw rod connected to it. When the rotor needs to be supported, the slider can be first slid outward along the radial direction of the support block, so that the front end of the rotor can be placed in the hollow area formed by the upper and lower bases, and then the slider can be slid inward along the radial direction of the support block to support the front end surface of the first stage of the rotor, which is convenient for subsequent clamping. Moreover, for rotors of different sizes, the corresponding position adjustment can be made by adjusting the slider to achieve support, and the scope of application is wide. Beneficial Effects

[0016] Compared with the prior art, the utility model has the following significant advantages:

[0017] 1. The utility model is provided with a slider that can slide back and forth, so that the front end of the rotor is conveniently placed in the supporting device. At the same time, through the rotatable opening and closing design, the upper and lower bases and the supporting plate are designed in two halves, wherein the split surface can be opened, and the device can be directly opened at the rotor, which effectively reduces the lifting height of the rotor and can also solve the problem that the front part of the rotor cannot be used due to interference.

[0018] 2. The slider of the utility model can slide back and forth and is suitable for rotors of various models and sizes.

[0019] 3. The utility model can adjust the center position of the rotor when supporting, thereby improving the assembly accuracy. The utility model can be placed in any area without being placed in a dedicated pit, and is applicable to a wide range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the 6F series gas turbine rotor;

[0021] Figure 2 This is a schematic diagram of the pit workbench support for the 6F series gas turbine rotor;

[0022] Figure 3 It is a schematic diagram of the structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the upper base and the lower base (closed);

[0024] Figure 5 It is a schematic diagram of the structure of the upper base and the lower base (open state);

[0025] Figure 6 is a structural schematic diagram of a support plate;

[0026] Figure 7 It is a structural diagram of the support plate, upper base and lower base (open state);

[0027] Figure 8 It is a structural schematic diagram of the slider;

[0028] Fig. 9 It is a structural schematic diagram of the front positioning block;

[0029] Fig.10 It is a structural schematic diagram of the shaft sleeve half body;

[0030] Fig.11 It is a structural schematic diagram of the rear positioning block;

[0031] Fig.12 It is a schematic diagram of the structure of the front positioning block, the screw rod and the rear positioning block;

[0032] Fig.13 Schematic diagram of the assembly structure of the front positioning block, screw rod and rear positioning block (without sleeve);

[0033] Fig.14 It is a schematic diagram of the slider sliding outward until the inner circle is the largest;

[0034] Fig.15 It is a schematic diagram of the slider sliding inwards until the inner circle is the smallest;

[0035] Fig.16 It is a schematic diagram of the assembly of the utility model and the rotor;

[0036] Markings in the figure: 1-lower base, 2-support plate, 3-locating pin, 4-slider, 5-setting screw, 6-front positioning block, 7-rear positioning block, 8-screw, 9-rotating pin, 10-upper base, 11-support column, 12-slide, 13-stop, 14-rotor, 15, pit workbench, 16-pit, 17-front end face of front half shaft 1201-screw hole, 401-block, 402-contact part, 403-through groove, 601-positioning block, 602-sleeve, 603-through hole, 604-first mounting hole, 605-sleeve half, 701-screw screw hole, 702-second mounting hole. DETAILED DESCRIPTION

[0037] The utility model is described in detail below in conjunction with the embodiments and application examples. It should be pointed out that the embodiments are preferred implementations of the utility model, rather than limiting the scope of protection claimed for the utility model, and the application and use method of the utility model are not limited to the application examples. Example

[0038] like Figure 3-16As shown, a supporting device for vertical assembly of a gas turbine rotor comprises two rotatable semi-circular lower bases 1, a plurality of supporting columns 11 are arranged on the lower base 1, two corresponding rotatable semi-circular upper bases 10 are arranged on the supporting columns 11, two semi-circular supporting plates 2 are arranged on the upper base 10, four slide grooves 12 of the same shape are symmetrically arranged on the supporting plate 2, each slide groove 12 is provided with a slider 4 that can slide radially along the supporting plate, a rear positioning block 7 is arranged on the supporting plate 2, the rear positioning block 7 is connected to the front positioning block 6 arranged on the slider through a screw rod 8, and the position of the slider 4 is adjusted by rotating the screw rod 8.

[0039] The slider 4 includes a block body 401 and an inner arc-shaped contact portion 402 arranged at the front end of the block body 401. The block body 401 is provided with a plurality of strip-shaped through grooves 403 along the sliding direction. A fixing screw 5 that can slide back and forth is provided in the through groove 403. The fixing screw 5 passes through the through groove 403 and the screw hole 1201 on the slide groove 12 in sequence to fasten the slider 4 and the slide groove 12. The front positioning block 6 is arranged on the block body 401. By setting the strip-shaped through grooves and the fixing screws, the forward and backward sliding and locking of the slider are realized.

[0040] The front positioning block 6 comprises a positioning block body 601 and a detachable sleeve 602. The positioning block body 601 is provided with a through hole 603 penetrating the positioning block body and a plurality of first mounting holes 604. The sleeve 602 is arranged in the through hole. The screw rod 8 passes through the sleeve 602 and is connected to the rear positioning block 7. The sleeve is composed of two sleeve halves 605 of the same structure. The mounting hole 604 cooperates with the screw to fix the front positioning block on the slider. The sleeve is detachable and easy to put into the through hole. At the same time, when the sleeve is removed, the screw rod can be used as a lifting device to support the rotor to adjust its center position so as to make the assembly more accurate.

[0041] The front positioning block 6 is arranged on the center line of the block body 601. There are four through slots 403, which are respectively located on both sides of the front positioning block 6, so as to facilitate uniform sliding of the slider.

[0042] The lower base 1 is rotatably opened and closed by connecting one end of the two lower bases through a rotating pin 9 and fixing the other end through a positioning pin 3. The pin facilitates the rotatable opening and closing, and the two lower bases are locked and fixed through the positioning pin after being matched. The upper base 10 is rotatably opened and closed by connecting one end of the two lower bases through a rotating pin 9 and fixing the other end through a positioning pin 3.

[0043] A stopper 13 is provided on the top of the upper base 10 for placing and positioning the support plate.

[0044] The rear positioning block 7 is provided with a screw screw hole 701 for installing a screw and a plurality of second mounting holes 702. The rear positioning block is fixed to the support plate by screws in cooperation with the second mounting holes. A reinforcing rib is provided on one side of the rear positioning block to ensure its strength.

[0045] The upper and lower bases in the utility model are used to support various parts and workpieces. They and the support plate are designed as a two-half structure. One side of the center plane of the base is connected by a rotating pin, and the two halves of the base can be opened by rotating the pin as an axis, and the rotating pin ensures the position of the upper and lower halves. The other side of the center plane of the base is connected by a positioning pin to ensure that the upper and lower halves are not misaligned when installed. See the figure below for details. The stopper on the support plate is used to place and position the support plate.

[0046] The support plate is installed on the upper base, and uses a two-half structure, which can be disassembled when necessary. Four slide grooves are designed on it to position the slider and determine its movement direction. Four screw holes are set under each slide groove for installing set screws.

[0047] In actual use, the horizontal position of the base and the support plate can be adjusted by padding copper sheets between them. A level meter can be used to check to ensure that the support plate is level, that is, to ensure that the workpiece is level when assembled.

[0048] Normally, the rotor is slowly lowered from the top of the supporting device. Considering that the rotor is too long or the factory building is not high enough, in order to facilitate the placement of the device, the upper and lower bases and support plates are designed to be two halves, which can be opened when necessary. The rotor can be directly moved to the position where it needs to be placed, and then the upper and lower halves can be closed.

[0049] The slider is assembled in the slide groove of the support plate, and its width is slightly smaller than that of the slide groove of the support plate. The slider is processed with 4 strip-shaped through grooves in the sliding direction for installing positioning screws without affecting the sliding of the slider. The inner arc contact part of the slider is in contact with the rotor, and relatively soft materials can be used to protect the rotor.

[0050] The slider moves to the appropriate position according to the actual size of the rotor. Fig.14 is the maximum position of the inner circle, Fig.15 It is the minimum position of the inner circle and can be freely adjusted within this range. When installing the rotor, first open it to the maximum position of the inner circle, then hang the rotor to the approximate position, and then adjust the 4 sliders to the appropriate position of the inner circle, which can solve the problem of interference at the front of the rotor.

[0051] The sleeve on the front positioning block is used to fix the screw. During installation, the sleeve engages with the limit groove at the end of the screw. When the screw rotates, the front positioning block can drive the slider to slide back and forth. When the sleeve is installed, the screw drives the slider to move back and forth, and the position adjustment is accurate and labor-saving. When the sleeve is removed, the slider will not move with the screw. The screw can be used as a lifting device to support the rotor and adjust its center position to make the assembly more accurate.

[0052] like Fig.12 , Fig.13 As shown. The rear positioning block is connected to the support plate by screws. There is a screw hole for installing the screw, and the connection between the screw and the support plate is fixed with reinforcing ribs to ensure its strength.

[0053] The usage and principle of this tool are as follows:

[0054] 1. Rotate the screw of the rear positioning block to adjust the slider in the device to the position with the largest inner circle.

[0055] 2. Adjust the rotor to the top of the device and slowly lower it to the final position.

[0056] 3. Rotate the screw of the rear positioning block to reduce the inner circle to the required position and tighten the set screw.

[0057] 4. Place the rotor on the fixed slider, rotate the screw on the rear positioning block to adjust its center position. If the plant is not high enough or the rotor is too long, remove the positioning pins, separate the upper and lower bases and support plates, so that the rotor does not need to be lifted to a higher position, and can be placed directly on the rotor for adjustment according to the above method.

Claims

1. A support device for vertical assembly of a gas turbine rotor, comprising two rotatable semicircular ring-shaped lower bases, characterized in that: The lower base is provided with a plurality of support columns, and the support columns are provided with two corresponding semi-circular upper bases that can be rotatably opened and closed. The upper base is provided with two semi-circular support plates, and the support plates are symmetrically provided with four slide grooves of the same shape, each of which is provided with a slider that can slide radially along the support plate, and the support plate is provided with a rear positioning block, which is connected to the front positioning block provided on the slider through a screw rod, and the position of the slider is adjusted by rotating the screw rod.

2. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: The slider includes a block body and an inner arc-shaped contact portion arranged at the front end of the block body. The block body is provided with a plurality of strip-shaped through grooves along the sliding direction. The through grooves are provided with set screws that can slide back and forth. The set screws pass through the through grooves and the screw holes on the slide grooves in sequence to fasten the slider and the slide groove.

3. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: The front positioning block includes a positioning block body and a detachable sleeve. The positioning block body is provided with a through hole penetrating the positioning block body and a plurality of first mounting holes. The sleeve is arranged in the through hole, and the screw rod passes through the sleeve and is connected to the rear positioning block. The sleeve is composed of two sleeve halves with the same structure. The mounting hole cooperates with the screw to fix the front positioning block on the slider.

4. The support device for vertical assembly of a gas turbine rotor according to claim 2 or 3, characterized in that: The front positioning block is arranged on the center line of the block body.

5. The supporting device for vertical assembly of a gas turbine rotor according to claim 2, characterized in that: The number of the strip-shaped through grooves is 4, which are respectively located on both sides of the front positioning block.

6. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: The rotation opening and closing of the lower base is achieved by connecting one end of the two lower bases through a rotating pin and fixing the other end through a positioning pin.

7. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: The upper base is rotatably opened and closed by connecting one end of the two lower bases via a rotating pin and fixing the other end thereof via a positioning pin.

8. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: A stop is provided on the top of the upper base for placing and positioning the support plate.

9. The supporting device for vertical assembly of a gas turbine rotor according to claim 1, characterized in that: The rear positioning block is provided with a screw screw hole for installing a screw and a plurality of second mounting holes (702), and the rear positioning block is fixed to the support plate by screws cooperating with the second mounting holes. A reinforcing rib is provided on one side of the rear positioning block.

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