Method for disassembling and assembling rotor of phase regulator on site

Abstract

The present invention discloses a method for on-site rotor disassembly and assembly of a phase shifter, comprising the following steps: installing an excitation end bearing on the excitation end of the rotor, and the excitation end bearing is rollably connected to a base plate via a rolling frame; installing a first rotor bracket below the non-excitation end of the rotor, and the first rotor bracket is rollably connected to the base plate via a rolling element; installing a first ground anchor at one end of the base plate, and installing a first cable with a hand chain hoist between the first ground anchor and the extended shaft; axially detachably connecting a plurality of core brackets to form a core bracket assembly, and placing the lower portion of the core bracket assembly on the inner circumference of the stator. The present invention allows the rotor to be installed in place by manually adjusting the hand chain hoist, first rotor bracket, second rotor bracket, third rotor bracket, rolling element, core support, and rolling frame on the first cable, thereby facilitating manual rotor disassembly and assembly on-site without a crane or 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

[0002] In order to solve the limitation of transient overvoltage in the sending-end system on 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 distributed air-cooled phase-shifting units of 10Mvar to 100Mvar.

[0003] However, the application site conditions of this type of phase regulator are generally simple, the factory space is small, and there is no crane lifting device, which makes the traditional method of lifting and disassembling the rotor unapplicable. Summary of the Invention

[0004] 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 without a crane hoisting device.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] A method for disassembling and assembling a rotor of a phase regulator on site, comprising the following steps:

[0007] The excitation end bearing is installed on the excitation end of the rotor, and the excitation end bearing is rollingly connected to the base 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 base plate through a rolling body; a first ground anchor is installed at one end of the base 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 connected in an axially detachable manner to form a core bracket assembly, and the lower part of the core bracket assembly is placed on the inner circumference of the stator;

[0008] Pull the first cable on the hand chain hoist until the extension shaft is completely moved above the core support assembly;

[0009] Lift the extension shaft to install the second rotor bracket with a rolling element at the lower end to the lower end of the extension shaft, remove the first rotor bracket and the rolling element at its lower end, and lower the extension shaft;

[0010] Pull the first cable on the hand chain hoist until the second rotor bracket moves to the edge of the core bracket assembly;

[0011] Lift the non-excitation end of the rotor to install the third rotor bracket with rolling elements at the lower end to the non-excitation end of the rotor, remove the second rotor bracket and the rolling elements at its lower end, and lower the non-excitation end of the rotor;

[0012] 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;

[0013] Lift up the extended shaft, install the first rotor bracket with a rolling element at the lower end to the lower end of the extended shaft, remove the third rotor bracket and the rolling element at its lower end, and then lower the extended shaft;

[0014] Remove the remaining core supports and pull the first cable up the hand chain hoist until the rotor is axially installed in place;

[0015] 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;

[0016] Lift up the fixed frame, take out the rolling frame, and then lower the fixed frame.

[0017] 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 hoist on the first cable, the first rotor bracket, the second rotor bracket, the third rotor bracket, the rolling element, 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 elements 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.

[0018] 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;

[0019] Mounting the second rotor support having a rolling element at the lower end thereof to the lower end of the extended shaft comprises:

[0020] Install a rolling element at the lower end of the second rotor bracket;

[0021] Mounting the third rotor support having a rolling element at its lower end to the non-excitation end of the rotor comprises:

[0022] A rolling element is installed at the lower end of the third rotor bracket.

[0023] The beneficial effect of adopting the above technical solution is: such an arrangement allows the second rotor bracket and the third rotor bracket to 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.

[0024] In one embodiment, fully moving the extension shaft to above the core support assembly includes:

[0025] The second rotor support moves to one end of the core support assembly;

[0026] The second rotor support is moved to the edge of the core support assembly including:

[0027] The third rotor support moves to one end of the core support assembly.

[0028] 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.

[0029] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0030] A limit block is provided at the upper end of the bottom plate;

[0031] Until the extension shaft is completely moved above the core support assembly, including:

[0032] Until the first rotor bracket contacts the limit block.

[0033] 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 has just completely moved above the core bracket assembly.

[0034] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0035] 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.

[0036] The beneficial effect of adopting the above technical solution is that the rotor can be moved in the reverse direction by pulling the hand hoist on the second cable so as to be removed.

[0037] In one embodiment, when the first cable upper chain hoist is pulled, the second cable upper chain hoist is pulled in the opposite direction.

[0038] The beneficial effect of adopting the above technical solution is: in this operation, the second cable gradually loosens the rotor during the process of the first cable pulling the rotor, so that the first cable can pull the rotor smoothly and avoid the first cable pulling the rotor too much.

[0039] In one embodiment, until the rotor is axially installed in position includes:

[0040] Until the second cable upper hand hoist is pulled in the opposite direction to the limit position.

[0041] 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.

[0042] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0043] Install the stator on the base plate;

[0044] 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.

[0045] 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 to the upper end of the first rotor bracket in sequence;

[0046] 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 to the upper end of the second rotor bracket in sequence;

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

[0048] Install the first rotor bracket with a rolling element at the lower end to the lower end of the extended shaft, and detachably connect the adjusting gasket, the square box and the washer to the upper end of the first rotor bracket in sequence;

[0049] When removing the first rotor bracket, the second rotor bracket and the third rotor bracket, remove the adjusting gaskets, square boxes and shims on the upper ends of the first rotor bracket, the second rotor bracket and the third rotor bracket respectively.

[0050] In one embodiment, placing the lower portion of the core support assembly on the inner circumference of the stator includes:

[0051] Place the backing plate in the stator so that the lower end surface of the backing plate fits against the inner surface of the stator;

[0052] 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.

[0053] The beneficial effects of the present invention are:

[0054] The on-site rotor disassembly and assembly method of the phase shifter can install the rotor in place by manually adjusting the hand hoist on the first cable, the first rotor bracket, the second rotor bracket, the third rotor bracket, the rolling element, 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 elements 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

[0055] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0056] Figure 1 It shows a schematic diagram of the structure before the manual hoist on the first cable is pulled in the present invention;

[0057] Figure 2 A schematic diagram showing the structure of the present invention when the connecting shaft is completely moved above the core support assembly;

[0058] 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;

[0059] 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;

[0060] Figure 5 It shows a schematic structural diagram of the rotor when it is axially installed in place in the present invention;

[0061] Figure 6 A schematic diagram showing the structure of the non-excitation end bearing when installed in the present invention;

[0062] Figure 7 A schematic diagram of the structure of the present invention when the rolling rack is removed is shown;

[0063] Figure 8 Shows a schematic structural diagram of the core support assembly of the present invention;

[0064] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0065] Reference numerals:

[0066] 1-first ground anchor, 2-first cable, 3-base plate, 4-end cover, 5-extending 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-limit block, 16-stator, 17-core bracket, 18-non-excitation end bearing. DETAILED DESCRIPTION

[0067] The present invention will be further described below with reference to the accompanying drawings.

[0068] 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:

[0069] like Figure 1 As shown, the stator 16 is mounted on the base plate 3; the non-excitation end of the rotor 9 is coaxially fixedly connected to the extension shaft 5, and the excitation end of the rotor 9 is fixedly connected to the fixing frame 11; 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 through the 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 through the rolling body; the first ground anchor 1 is mounted 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 extension 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 surface of the stator 16; at this time, the non-excitation end bearing 18 and the end shield 4 are not installed;

[0070] Pull the first cable 2 on the hand chain hoist, and the rotor 9 uses the rolling element and the rolling frame 14 at the lower end of the first rotor bracket 8 to move until the extended shaft 5 is completely moved to the top of the core bracket assembly. Figure 2 As shown;

[0071] Use the jack to lift the extension shaft 5, and then install the second rotor bracket 6 with a rolling element at the lower end to the lower end of the extension shaft 5. Remove the first rotor bracket 8 and the rolling element at its lower end, lower the extension shaft 5 and remove the jack.

[0072] Pull the first cable 2 on the hand chain hoist, and the rotor 9 uses the rolling element and the rolling frame 14 at the lower end of the second rotor bracket 6 to move until the second rotor bracket 6 moves to the edge of the core bracket assembly. Figure 3 As shown;

[0073] Use a jack to lift the non-excitation end of the rotor 9, so as to install the third rotor bracket 7 with a rolling element at the lower end to the non-excitation end of the rotor 9, remove the second rotor bracket 6 and the rolling element at its lower end, lower the non-excitation end of the rotor 9 and remove the jack;

[0074] Pull the hand chain hoist on the first cable 2, and the rotor 9 moves by using the rolling element and the rolling frame 14 at the lower end of the third rotor bracket 7, and gradually remove the core bracket 17 of the third rotor bracket 7 away from the end of the extended shaft 5 until the third rotor bracket 7 moves to the edge of the core bracket assembly. Figure 4 As shown;

[0075] Use the jack to lift the extended shaft 5, install the first rotor bracket 8 with a rolling element at the lower end to the lower end of the extended shaft 5, remove the third rotor bracket 7 and the rolling element at its lower end, then lower the extended shaft 5 and remove the jack;

[0076] Remove the remaining core bracket 17, pull the first cable 2 on the hand chain hoist, and the rotor 9 uses the rolling element and 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;

[0077] like Figure 6 As shown, the non-excitation end of the rotor 9 is lifted up by a jack, and 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 removed;

[0078] 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.

[0079] It can be understood that the present method for disassembling and assembling the rotor on site of the phase shifter can install the rotor 9 in place by manually adjusting the hand hoist 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, so as 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.

[0080] 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 extended shaft 5, and the third rotor bracket 7 is tied below the non-excitation end of the rotor 9;

[0081] The second rotor support 6 having a rolling element at its lower end is mounted to the lower end of the extended shaft 5, comprising:

[0082] A rolling element is installed at the lower end of the second rotor bracket 6;

[0083] Mounting the third rotor support 7 having a rolling element at its lower end to the non-excitation end of the rotor 9 includes:

[0084] A rolling element is mounted on the lower end of the third rotor support 7 .

[0085] It can be understood that this arrangement allows the second rotor bracket 6 and the third rotor bracket 7 to be pre-installed at the corresponding positions of the extended shaft 5 and the non-excitation end of the rotor 9, respectively. 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.

[0086] In one embodiment, the extension shaft 5 is completely moved above the core support assembly, including:

[0087] The second rotor support 6 moves to one end of the core support assembly;

[0088] The second rotor support 6 moves to the edge of the core support assembly including:

[0089] The third rotor support 7 moves to one end of the core support assembly.

[0090] 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.

[0091] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0092] A limit block 15 is provided at the upper end of the bottom plate 3;

[0093] Until the extension shaft 5 is completely moved above the core support assembly, the following steps are included:

[0094] Until the first rotor support 8 contacts the limiting block 15 .

[0095] It is understandable 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 has just completely moved to the top of the core bracket assembly.

[0096] In one embodiment, the method for disassembling and assembling the rotor of a phase regulator on site further comprises the following steps:

[0097] 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 pull ear of the fixing frame 11 .

[0098] It is understandable 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.

[0099] In one embodiment, when the first cable 2 is pulled on the hand chain hoist, the second cable 12 is pulled in the opposite direction on the hand chain hoist.

[0100] It is understandable that such operation allows the second cable 12 to gradually loosen the rotor 9 while the first cable 2 pulls the rotor 9, thereby enabling the first cable 2 to pull the rotor 9 smoothly and preventing the first cable 2 from pulling the rotor 9 excessively.

[0101] In one embodiment, the process of installing the rotor 9 axially into position comprises:

[0102] Until the second cable 12 is pulled in the reverse direction by the hand chain hoist to the limit position.

[0103] 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.

[0104] 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;

[0105] When the second rotor bracket 6 with a rolling element at the 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 to the upper end of the second rotor bracket 6 in sequence;

[0106] When the third rotor bracket 7 with a rolling element 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 to the upper end of the third rotor bracket 7 in sequence;

[0107] Install the first rotor bracket 8 with a rolling element at the lower end to the lower end of the extended shaft 5, and detachably connect the adjusting gasket, square box and shim to the upper end of the first rotor bracket 8 in sequence;

[0108] 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.

[0109] It should be noted that the adjusting gaskets have a variety of thickness specifications. By installing adjusting gaskets of different thickness specifications, the height of the shim can be adjusted to facilitate the shim supporting 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.

[0110] In one embodiment, placing the lower portion of the core support assembly on the inner circumference of the stator 16 includes:

[0111] Place the backing plate in the stator 16 so that the lower end surface of the backing plate fits against the inner circumferential surface of the stator 16;

[0112] The core support assembly is placed on the backing plate so that the lower end surface of the core support assembly is in contact with the upper end surface of the backing plate; wherein the core support assembly is at the same distance from both ends of the stator 16 core.

[0113] It should be emphasized that the process of the rotor withdrawal method is the opposite of the rotor insertion method.

[0114] In summary, the present method for on-site disassembly and assembly of the phase shifter rotor is applicable to situations where on-site installation, inspection or maintenance of the phase shifter rotor 9 is performed without large lifting equipment. It has the characteristics of saving time, labor, low cost and simple operation, and can realize the disassembly and assembly of a 100t rotor 9 with very little manpower and material resources.

[0115] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0116] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with 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) through 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) through 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 circumference of the stator (16); Pull the first cable (2) to pull the hand hoist until the extension shaft (5) is completely moved above the core support assembly; Lift the extension shaft (5) to install the second rotor bracket (6) with a rolling element at its lower end to the lower end of the extension shaft (5), remove the first rotor bracket (8) and the rolling element at its lower end, and lower the extension shaft (5); Pull the first cable (2) onto the hand chain hoist until the second rotor support (6) moves to the edge of the core support assembly; Lifting the non-excitation end of the rotor (9) to install a third rotor support (7) with a rolling element at its lower end to the non-excitation end of the rotor (9), removing the second rotor support (6) and the rolling element at its lower end, and lowering the non-excitation end of the rotor (9); Pull the hand hoist on the first cable (2) and gradually remove the core support (17) of the third rotor support (7) away from the end of the extended shaft (5) until the third rotor support (7) moves to the edge of the core support assembly; Lift the extended shaft (5), install the first rotor bracket (8) with a rolling element at the lower end to the lower end of the extended shaft (5), remove the third rotor bracket (7) and the rolling element at its lower end, and then lower the extended shaft (5); Remove the remaining core bracket (17), pull the first cable (2) on the hand chain hoist until the rotor (9) is axially installed in place; Lift 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 bracket (8) and the rolling element at its lower end, 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 extended 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 bracket (6) having a rolling element at its lower end to the lower end of the extension shaft (5) comprises: A rolling body is installed at the lower end of the second rotor bracket (6); The method of installing the third rotor support (7) having a rolling body at its lower end to the non-excitation end of the rotor (9) comprises: A rolling body is installed at the lower end of the third rotor bracket (7).

3. The method for disassembling and assembling the rotor of a phase regulator on site according to claim 2, characterized in that: The extending shaft (5) is completely moved to the top of the core support assembly, which includes: 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 process of moving the extension shaft (5) completely to the top of 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 process of axially installing the rotor (9) into position comprises: Until the second cable (12) is pulled up and the hand chain hoist is pulled in the opposite direction 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 adjustment 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 on 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 the third rotor bracket (7) with a rolling body provided at the lower end is mounted on 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) with a rolling element at its lower end is mounted to the lower end of the extension 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); 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 pads 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 method of placing the lower portion of the core support assembly on the inner surface of the stator (16) includes: 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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