Method for dismounting rotor of phase modifier on site

Abstract

The method comprises the following steps that an excitation end bearing is installed at the excitation end of a rotor, and the excitation end bearing is connected to a bottom plate in a rolling mode through a rolling frame; a first rotor support is installed below the non-excitation end of the rotor, and the first rotor support is connected to the bottom plate in a rolling mode through a rolling body; a first ground anchor is installed at one end of the bottom plate, and a first inhaul cable provided with a chain block is installed between the first ground anchor and the extension shaft; a plurality of iron core supports are sequentially and detachably connected in the axial direction to form an iron core support assembly, and the lower portion of the iron core support assembly is arranged on the inner circle face of the stator. The rotor can be installed in place by manually adjusting the chain block, the first rotor support, the second rotor support, the third rotor support, the rolling body, the iron core support, the rolling frame and other components on the first inhaul cable, and therefore the rotor can be manually disassembled and assembled on the site without a traveling crane hoisting device.

Description

Technical Field

[0001] The invention belongs to the technical field of phase regulators, and in particular relates to a method for disassembling and assembling a rotor of a phase regulator on site. Background Art

[0003] In order to solve the limitation of transient overvoltage in the sending-end system on the DC transmission power, the new energy sending-end system needs to be equipped with a large number of phase-shifting units. However, new energy power generation sites such as wind farms and photovoltaic power generation collection stations have the characteristics of randomness, intermittency and instability. New energy power generation sites need to be equipped with small phase-shifting units to meet the requirements of the power grid, and currently they are mainly equipped with 10Mvar~100Mvar distributed air-cooled phase-shifting units.

[0004] However, the application site of this type of phase regulator is generally simple, with small factory space and no crane lifting device, which makes the traditional method of lifting and disassembling the rotor unapplicable. Summary of the invention

[0005] In order to overcome the defects of the prior art, the present invention provides a method for disassembling and assembling a rotor of a phase regulator on site, which can manually disassemble and assemble the rotor on site where there is no crane hoisting device.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] A method for disassembling and assembling a rotor of a phase regulator on site, comprising the following steps:

[0008] The excitation end bearing is installed on the excitation end of the rotor, and the excitation end bearing is rollingly connected to the bottom plate through a rolling frame; the first rotor bracket is installed below the non-excitation end of the rotor, and the first rotor bracket is rollingly connected to the bottom plate through a rolling body; a first ground anchor is installed at one end of the bottom plate, and a first cable with a hand chain hoist is installed between the first ground anchor and the extension shaft; a plurality of core brackets are sequentially detachably connected along the axial direction to form a core bracket assembly, and the lower part of the core bracket assembly is placed on the inner circumference of the stator;

[0009] Pull the first cable on the hand chain hoist until the extended shaft is completely moved above the core support assembly;

[0010] Lift up the extension shaft to install the second rotor bracket with a rolling body at the lower end to the lower end of the extension shaft, remove the first rotor bracket and the rolling body at the lower end thereof, and put down the extension shaft;

[0011] Pull the hand chain hoist on the first cable until the second rotor support moves to the edge of the core support assembly;

[0012] Lift up the non-excitation end of the rotor to install the third rotor bracket with a rolling body at the lower end to the non-excitation end of the rotor, remove the second rotor bracket and the rolling body at the lower end thereof, and put down the non-excitation end of the rotor;

[0013] Pull the hand chain hoist on the first cable, and gradually remove the core support of the third rotor support away from the end of the extended shaft until the third rotor support moves to the edge of the core support assembly;

[0014] Lift up the extension shaft, install the first rotor bracket with a rolling body at the lower end to the lower end of the extension shaft, remove the third rotor bracket and the rolling body at its lower end, and then put down the extension shaft;

[0015] Remove the remaining core brackets and pull the first cable hoist until the rotor is axially installed in place;

[0016] Lift up the non-excitation end of the rotor, install the non-excitation end bearing on the non-excitation end of the rotor, remove the first rotor bracket and the rolling element at its lower end, and lower the non-excitation end of the rotor;

[0017] Lift up the fixed frame, take out the rolling frame, and then lower the fixed frame.

[0018] The beneficial effects of adopting the above technical solution are as follows: the on-site rotor disassembly and assembly method of the phase shifter can install the rotor in place by manually adjusting the hand winch on the first cable, the first rotor bracket, the second rotor bracket, the third rotor bracket, the rolling body, the core support and the rolling frame, thereby facilitating manual disassembly and assembly of the rotor on site without a crane lifting device; in addition, the core support assembly provides a rolling plane for the rolling bodies at the lower ends of the second rotor bracket and the third rotor bracket to avoid wear of the stator due to the second rotor bracket and the third rotor bracket rolling directly on the stator.

[0019] In one embodiment, when the first rotor bracket is installed below the non-excitation end of the rotor, the second rotor bracket is detachably connected to the lower end of the extended shaft, and the third rotor bracket is detachably connected below the non-excitation end of the rotor;

[0020] Mounting the second rotor support having a rolling body at the lower end to the lower end of the extended shaft comprises:

[0021] Install a rolling element at the lower end of the second rotor bracket;

[0022] Mounting a third rotor support having a rolling body at the lower end to the non-excitation end of the rotor comprises:

[0023] A rolling element is installed at the lower end of the third rotor bracket.

[0024] The beneficial effect of adopting the above technical solution is: it is arranged in this way so that the second rotor bracket and the third rotor bracket can be installed in advance at the corresponding positions of the extended shaft and the non-excitation end of the rotor respectively. When the second rotor bracket or the third rotor bracket plays a supporting role, only the rolling elements and other necessary components need to be installed, which is conducive to quickly installing the second rotor bracket and the third rotor bracket in place during the rotor insertion process.

[0025] In one embodiment, the extension shaft is completely moved above the core support assembly, including:

[0026] The second rotor support moves to one end of the core support assembly;

[0027] The second rotor support is moved to the edge of the core support assembly including:

[0028] The third rotor support moves to one end of the core support assembly.

[0029] The beneficial effects of adopting the above technical solution are: by judging whether the second rotor bracket has moved to one end of the core bracket assembly, it can be determined whether the extended shaft has been completely moved above the core bracket assembly; by judging whether the third rotor bracket has moved to one end of the core bracket assembly, it can be determined whether the second rotor bracket has moved to the edge of the core bracket assembly.

[0030] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0031] A limit block is arranged at the upper end of the bottom plate;

[0032] Until the extension shaft is completely moved above the core support assembly, it includes:

[0033] Until the first rotor support contacts the limiting block.

[0034] The beneficial effects of adopting the above technical solution are: the limit block can limit the axial movement position of the first rotor bracket; when the first rotor bracket contacts the limit block, it can be determined that the extended shaft is just completely moved above the core bracket assembly.

[0035] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0036] A second ground anchor is installed at the other end of the bottom plate, and a second cable with a hand winch is installed between the second ground anchor and the fixing frame.

[0037] The beneficial effect of adopting the above technical solution is that by pulling the hand winch on the second cable, the rotor can be moved in the reverse direction so that the rotor can be removed.

[0038] In one embodiment, when the hand chain hoist on the first cable is pulled, the hand chain hoist on the second cable is pulled in the opposite direction.

[0039] The beneficial effect of adopting the above technical solution is: in this way, when the first cable pulls the rotor, the second cable gradually loosens the rotor, so that the first cable can pull the rotor smoothly and the first cable can be prevented from pulling the rotor too much.

[0040] In one embodiment, until the rotor is axially installed in place includes:

[0041] Until the hand winch on the second cable is pulled in the opposite direction to the limit position.

[0042] The beneficial effects of adopting the above technical solution are: the second cable provided with a hand chain hoist can limit the axial movement position of the rotor; when the hand chain hoist on the second cable is pulled in the opposite direction to the limit position, it can be determined that the rotor is axially installed in place.

[0043] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0044] Install the stator on the base plate;

[0045] The non-excitation end of the rotor is coaxially fixedly connected to the long shaft, and the excitation end of the rotor is fixedly connected to the fixing frame.

[0046] In one embodiment, when the first rotor bracket is installed below the non-excitation end of the rotor, an adjusting gasket, a square box and a washer are detachably connected in sequence to the upper end of the first rotor bracket;

[0047] When the second rotor bracket with a rolling body at the lower end is mounted to the lower end of the extended shaft, an adjusting gasket, a square box and a washer are detachably connected in sequence at the upper end of the second rotor bracket;

[0048] When the third rotor bracket with a rolling body at the lower end is mounted to the non-excitation end of the rotor, an adjusting gasket, a square box and a washer are detachably connected in sequence at the upper end of the third rotor bracket;

[0049] The first rotor bracket with a rolling body at the lower end is mounted to the lower end of the extension shaft, and the upper end of the first rotor bracket is detachably connected with an adjusting gasket, a square box and a washer in sequence;

[0050] When removing the first rotor bracket, the second rotor bracket and the third rotor bracket, the adjusting gaskets, the square boxes and the shims on the upper ends of the first rotor bracket, the second rotor bracket and the third rotor bracket are removed respectively.

[0051] In one embodiment, placing the lower portion of the core support assembly on the inner circumference of the stator includes:

[0052] The backing plate is placed in the stator so that the lower end surface of the backing plate fits the inner circumferential surface of the stator;

[0053] Place the core support assembly on the backing plate so that the lower end surface of the core support assembly fits the upper end surface of the backing plate.

[0054] The beneficial effects of the present invention are:

[0055] The on-site rotor disassembly and assembly method of the phase regulator can install the rotor in place by manually adjusting the hand chain hoist on the first cable, the first rotor bracket, the second rotor bracket, the third rotor bracket, the rolling body, the core support and the rolling frame, so as to facilitate manual disassembly and assembly of the rotor on site without a crane lifting device; in addition, the core support assembly provides a rolling plane for the rolling bodies at the lower ends of the second rotor bracket and the third rotor bracket, so as to avoid wear of the stator due to the second rotor bracket and the third rotor bracket rolling directly on the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0057] Figure 1 The schematic diagram of the structure before the manual hoist on the first cable is pulled in the present invention is shown;

[0058] Figure 2 The schematic diagram of the structure when the connecting long axis is completely moved above the core support assembly in the present invention is shown;

[0059] Figure 3 A schematic diagram showing the structure of the second rotor support when it moves to the edge of the core support assembly in the present invention;

[0060] Figure 4 A schematic diagram showing the structure of the third rotor support when it moves to the edge of the core support assembly in the present invention;

[0061] Figure 5 The schematic diagram of the structure of the rotor in the present invention when it is axially installed in place is shown;

[0062] Figure 6 The schematic diagram of the structure when the non-excitation end bearing is installed in the present invention is shown;

[0063] Figure 7 A schematic diagram showing the structure of the present invention when the rolling rack is taken out;

[0064] Figure 8 A schematic diagram showing the structure of the core support assembly of the present invention is shown;

[0065] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0066] Reference numerals:

[0067] 1-first ground anchor, 2-first cable, 3-bottom plate, 4-end cover, 5-connecting long shaft, 6-second rotor bracket, 7-third rotor bracket, 8-first rotor bracket, 9-rotor, 10-excitation end bearing, 11-fixed frame, 12-second cable, 13-second ground anchor, 14-rolling frame, 15-limiting block, 16-stator, 17-core bracket, 18-non-excitation end bearing. DETAILED DESCRIPTION

[0068] The present invention will be further described below in conjunction with the accompanying drawings.

[0069] The present invention provides a method for disassembling and assembling a rotor of a phase regulator on site, wherein the rotor insertion method comprises the following steps:

[0070] like Figure 1 As shown, the stator 16 is installed on the base plate 3; the non-excitation end of the rotor 9 is coaxially fixedly connected to the long shaft 5, and the excitation end of the rotor 9 is fixedly connected to the fixing frame 11; the excitation end bearing 10 is installed on the excitation end of the rotor 9, and the excitation end bearing 10 is rollingly connected to the base plate 3 through the rolling frame 14; the first rotor bracket 8 is installed below the non-excitation end of the rotor 9, and the first rotor bracket 8 is rollingly connected to the base plate 3 through the rolling body; the first ground anchor 1 is installed at one end of the base plate 3, and the first cable 2 provided with a hand chain hoist is installed between the first ground anchor 1 and the pull ear of the long shaft 5; as shown Figure 8 As shown, several core supports 17 are bolted together in sequence along the axial direction to form a core support assembly, and the lower part of the core support assembly is placed on the inner circumferential surface of the stator 16; at this time, the non-excitation end bearing 18 and the end cover 4 are not installed;

[0071] Pull the hand chain hoist on the first cable 2, and the rotor 9 moves by using the rolling body and the rolling frame 14 at the lower end of the first rotor bracket 8 until the extension shaft 5 is completely moved to the top of the core bracket assembly. Figure 2 As shown;

[0072] Use a jack to lift up the extended shaft 5, so as to install the second rotor bracket 6 with a rolling body at the lower end to the lower end of the extended shaft 5, remove the first rotor bracket 8 and the rolling body at the lower end thereof, put down the extended shaft 5 and take out the jack;

[0073] Pull the hand chain hoist on the first cable 2, and the rotor 9 moves by using the rolling body and the rolling frame 14 at the lower end of the second rotor bracket 6 until the second rotor bracket 6 moves to the edge of the core bracket assembly. Figure 3 As shown;

[0074] Lift the non-excitation end of the rotor 9 with a jack, install the third rotor bracket 7 with a rolling body at the lower end to the non-excitation end of the rotor 9, remove the second rotor bracket 6 and the rolling body at the lower end, put down the non-excitation end of the rotor 9 and take out the jack;

[0075] By pulling the hand chain hoist on the first cable 2, the rotor 9 uses the rolling body and the rolling frame 14 at the lower end of the third rotor bracket 7 to move, and gradually removes the core bracket 17 of the third rotor bracket 7 away from the end of the extension shaft 5 until the third rotor bracket 7 moves to the edge of the core bracket assembly. Figure 4 As shown;

[0076] Lift the extension shaft 5 with a jack, install the first rotor bracket 8 with a rolling element at the lower end to the lower end of the extension shaft 5, remove the third rotor bracket 7 and the rolling element at its lower end, then put down the extension shaft 5 and take out the jack;

[0077] Remove the remaining core bracket 17, pull the first cable 2 on the hand chain hoist, and the rotor 9 uses the rolling body and the rolling frame 14 at the lower end of the first rotor bracket 8 to move until the rotor 9 is axially installed in place. Figure 5 As shown;

[0078] like Figure 6 As shown, the non-excitation end of the rotor 9 is lifted up by a jack, the non-excitation end bearing 18 is installed at the journal position of the non-excitation end of the rotor 9, the first rotor bracket 8 and the rolling element at its lower end are removed, the non-excitation end of the rotor 9 is lowered and the jack is taken out;

[0079] like Figure 7 As shown, the jack lifts up the fixed frame 11, takes out the rolling frame 14, then puts down the fixed frame 11 and takes out the jack.

[0080] It can be understood that the on-site rotor disassembly and assembly method of the present phase shifter can install the rotor 9 in place by manually adjusting the hand winch on the first cable 2, the first rotor bracket 8, the second rotor bracket 6, the third rotor bracket 7, the rolling elements, the core support and the rolling frame 14, thereby facilitating manual disassembly and assembly of the rotor 9 on-site without a crane lifting device; in addition, the core support assembly provides a rolling plane for the rolling elements at the lower ends of the second rotor bracket 6 and the third rotor bracket 7 to avoid wear of the stator 16 due to the second rotor bracket 6 and the third rotor bracket 7 rolling directly on the stator 16.

[0081] In one embodiment, when the first rotor bracket 8 is installed below the non-excitation end of the rotor 9, the second rotor bracket 6 is tied to the lower end of the extension shaft 5, and the third rotor bracket 7 is tied below the non-excitation end of the rotor 9;

[0082] The second rotor support 6 having a rolling body at the lower end is mounted to the lower end of the extension shaft 5, comprising:

[0083] A rolling element is installed at the lower end of the second rotor support 6;

[0084] Mounting the third rotor support 7 with a rolling body at the lower end to the non-excitation end of the rotor 9 includes:

[0085] A rolling element is mounted on the lower end of the third rotor support 7 .

[0086] It can be understood that such an arrangement is adopted so that the second rotor bracket 6 and the third rotor bracket 7 can be respectively installed in advance at the corresponding positions of the extension shaft 5 and the non-excitation end of the rotor 9. When the second rotor bracket 6 or the third rotor bracket 7 plays a supporting role, only the rolling elements and other necessary components need to be installed. This is conducive to quickly installing the second rotor bracket 6 and the third rotor bracket 7 in place during the rotor insertion process.

[0087] In one embodiment, the extension shaft 5 is completely moved above the core support assembly, including:

[0088] The second rotor support 6 moves to one end of the core support assembly;

[0089] The second rotor support 6 moves to the edge of the core support assembly including:

[0090] The third rotor support 7 moves to one end of the core support assembly.

[0091] It can be understood that by judging whether the second rotor bracket 6 moves to one end of the core bracket assembly, it can be determined whether the extension shaft 5 is completely moved above the core bracket assembly; by judging whether the third rotor bracket 7 moves to one end of the core bracket assembly, it can be determined whether the second rotor bracket 6 moves to the edge of the core bracket assembly.

[0092] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0093] A limit block 15 is provided at the upper end of the bottom plate 3;

[0094] Until the extension shaft 5 is completely moved above the core support assembly, it includes:

[0095] Until the first rotor support 8 contacts the limiting block 15 .

[0096] It can be understood that the limit block 15 can limit the axial movement position of the first rotor bracket 8; when the first rotor bracket 8 contacts the limit block 15, it can be determined that the extended shaft 5 is just completely moved to the top of the core bracket assembly.

[0097] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0098] A second ground anchor 13 is installed at the other end of the bottom plate 3 , and a second pull rope 12 provided with a hand winch is installed between the second ground anchor 13 and the pull ear of the fixing frame 11 .

[0099] It can be understood that by pulling the hand chain hoist on the second cable 12, the rotor 9 can be moved in the reverse direction so that the rotor 9 can be removed.

[0100] In one embodiment, when the first cable 2 is pulled on the hand chain hoist, the second cable 12 is pulled on the hand chain hoist in the opposite direction.

[0101] It is understandable that such operation allows the second cable 12 to gradually loosen the rotor 9 during the process of the first cable 2 pulling the rotor 9, so that the first cable 2 can smoothly pull the rotor 9 and avoid the first cable 2 pulling the rotor 9 too much.

[0102] In one embodiment, until the rotor 9 is axially installed in place includes:

[0103] Until the hand chain hoist on the second cable 12 is pulled in the opposite direction to the limit position.

[0104] It is understandable that the second cable 12 provided with a hand chain hoist can limit the axial movement position of the rotor 9; when the hand chain hoist on the second cable 12 is pulled in the reverse direction to the limit position, it can be determined that the rotor 9 is axially installed in place.

[0105] In one embodiment, when the first rotor support 8 is installed below the non-excitation end of the rotor 9, an adjusting gasket, a square box and a washer are detachably connected to the upper end of the first rotor support 8 in sequence;

[0106] When the second rotor bracket 6 with a rolling body at the lower end is mounted to the lower end of the extension shaft 5, an adjusting gasket, a square box and a washer are detachably connected to the upper end of the second rotor bracket 6 in sequence;

[0107] When the third rotor bracket 7 with a rolling body at the lower end is mounted to the non-excitation end of the rotor 9, an adjusting gasket, a square box and a washer are detachably connected in sequence at the upper end of the third rotor bracket 7;

[0108] The first rotor bracket 8 with a rolling body at the lower end is installed to the lower end of the extension shaft 5, and the upper end of the first rotor bracket 8 is detachably connected with an adjusting gasket, a square box and a washer in sequence;

[0109] When removing the first rotor bracket 8 , the second rotor bracket 6 and the third rotor bracket 7 , the adjusting gaskets, the square boxes and the shims on the upper ends of the first rotor bracket 8 , the second rotor bracket 6 and the third rotor bracket 7 are removed respectively.

[0110] It should be noted that the adjusting gaskets have various thickness specifications. By installing adjusting gaskets of different thickness specifications, the height of the shim can be adjusted to facilitate the shim to support the rotor 9 or components on the rotor 9, thereby facilitating the leveling of the rotor 9; in addition, the shim can be a V-shaped shim to facilitate fixing the cylindrical shaft on the rotor 9.

[0111] In one embodiment, placing the lower portion of the core support assembly on the inner circumference of the stator 16 includes:

[0112] The backing plate is placed in the stator 16 so that the lower end surface of the backing plate fits the inner circumferential surface of the stator 16;

[0113] The core support assembly is placed on the pad so that the lower end surface of the core support assembly fits the upper end surface of the pad; wherein the core support assembly is at the same distance from both ends of the stator 16 core.

[0114] It should be emphasized that the process of the rotor withdrawal method is the opposite of the rotor insertion method.

[0115] In summary, the on-site disassembly and assembly method of the phase shifter rotor can be applied to the occasions of on-site installation, inspection or maintenance of the phase shifter rotor 9 when there is no large lifting equipment. It has the characteristics of saving time, labor, low cost and simple operation. It can realize the disassembly and assembly of the 100t rotor 9 with very little manpower and material resources.

[0116] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 a limitation on the present invention.

[0117] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A method for disassembling and assembling a rotor of a phase regulator on site, characterized in that: The following steps are involved: The excitation end bearing (10) is mounted on the excitation end of the rotor (9), and the excitation end bearing (10) is rollingly connected to the base plate (3) via a rolling frame (14); the first rotor bracket (8) is mounted below the non-excitation end of the rotor (9), and the first rotor bracket (8) is rollingly connected to the base plate (3) via a rolling body; a first ground anchor (1) is mounted on one end of the base plate (3), and a first cable (2) provided with a hand chain hoist is mounted between the first ground anchor (1) and the extension shaft (5); a plurality of core brackets (17) are sequentially detachably connected in the axial direction to form a core bracket assembly, and the lower portion of the core bracket assembly is placed on the inner circumferential surface of the stator (16); Pull the first cable (2) to pull the hand chain hoist until the extension shaft (5) is completely moved above the core support assembly; Lifting the extension shaft (5), installing the second rotor support (6) with a rolling body at the lower end to the lower end of the extension shaft (5), removing the first rotor support (8) and the rolling body at the lower end thereof, and lowering the extension shaft (5); Pull the first cable (2) on the hand chain hoist until the second rotor support (6) moves to the edge of the core support assembly; Lifting up the non-excitation end of the rotor (9) to install a third rotor support (7) with a rolling body at the lower end to the non-excitation end of the rotor (9), removing the second rotor support (6) and the rolling body at the lower end thereof, and lowering the non-excitation end of the rotor (9); Pull the hand chain hoist on the first cable (2) and gradually remove the core support (17) at the end of the third rotor support (7) away from the extended shaft (5) until the third rotor support (7) moves to the edge of the core support assembly; Lift up the extension shaft (5), install the first rotor bracket (8) with a rolling body at the lower end to the lower end of the extension shaft (5), remove the third rotor bracket (7) and the rolling body at the lower end thereof, and then lower the extension shaft (5); The remaining core bracket (17) is removed, and the first cable (2) is pulled up to the hand chain hoist until the rotor (9) is axially installed in place; Lift up the non-excitation end of the rotor (9), install the non-excitation end bearing (18) on the non-excitation end of the rotor (9), remove the first rotor support (8) and the rolling element at the lower end thereof, and lower the non-excitation end of the rotor (9); Lift up the fixed frame (11), take out the rolling frame (14), and then put down the fixed frame (11).

2. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: When the first rotor bracket (8) is installed below the non-excitation end of the rotor (9), the second rotor bracket (6) is detachably connected to the lower end of the extension shaft (5), and the third rotor bracket (7) is detachably connected to the below the non-excitation end of the rotor (9); The step of installing the second rotor support (6) having a rolling body at the lower end to the lower end of the extension shaft (5) comprises: A rolling body is mounted on the lower end of the second rotor support (6); The step of installing the third rotor support (7) having a rolling body at the lower end thereof to the non-excitation end of the rotor (9) comprises: A rolling body is mounted on the lower end of the third rotor support (7).

3. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 2, characterized in that: The extension shaft (5) is completely moved to the top of the core support assembly, including: The second rotor support (6) moves to one end of the core support assembly; The second rotor support (6) moves to the edge of the core support assembly, comprising: The third rotor support (7) moves to one end of the core support assembly.

4. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: The following steps are also included: A limit block (15) is provided at the upper end of the bottom plate (3); The step of completely moving the extension shaft (5) above the core support assembly comprises: Until the first rotor support (8) contacts the limiting block (15).

5. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: The following steps are also included: A second ground anchor (13) is installed at the other end of the bottom plate (3), and a second cable (12) provided with a hand chain hoist is installed between the second ground anchor (13) and the fixing frame (11).

6. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 5, characterized in that: When the first cable (2) is pulled to pull the hand chain hoist, the second cable (12) is pulled in the opposite direction to pull the hand chain hoist.

7. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 6, characterized in that: The step of installing the rotor (9) axially in place comprises: Until the second cable (12) is pulled in the reverse direction by the hand chain hoist to the limit position.

8. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: The following steps are also included: Mounting the stator (16) on the base plate (3); The long shaft (5) is coaxially fixedly connected to the non-excitation end of the rotor (9), and the fixing frame (11) is fixedly connected to the excitation end of the rotor (9).

9. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: When the first rotor bracket (8) is installed below the non-excitation end of the rotor (9), an adjusting gasket, a square box and a washer are detachably connected in sequence to the upper end of the first rotor bracket (8); When a second rotor bracket (6) having a rolling body at its lower end is mounted to the lower end of the extended shaft (5), an adjusting gasket, a square box and a washer are detachably connected in sequence to the upper end of the second rotor bracket (6); When a third rotor bracket (7) having a rolling body disposed at the lower end is mounted to the non-excitation end of the rotor (9), an adjusting gasket, a square box and a washer are detachably connected in sequence at the upper end of the third rotor bracket (7); A first rotor bracket (8) having a rolling body at its lower end is mounted to the lower end of the extended shaft (5), and an adjusting gasket, a square box and a washer are detachably connected to the upper end of the first rotor bracket (8) in sequence; When the first rotor bracket (8), the second rotor bracket (6) and the third rotor bracket (7) are removed, the adjusting gaskets, the square boxes and the shims on the upper ends of the first rotor bracket (8), the second rotor bracket (6) and the third rotor bracket (7) are removed respectively.

10. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 1, characterized in that: The step of placing the lower portion of the core support assembly on the inner circumference of the stator (16) comprises: The backing plate is placed in the stator (16) so that the lower end surface of the backing plate is in contact with the inner circumferential surface of the stator (16); Place the core support assembly on the backing plate so that the lower end surface of the core support assembly fits the upper end surface of the backing plate.

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