A method for supporting between magnetic poles for cooling a magnetic pole coil and its application

Abstract

The present invention discloses a method for supporting between magnetic poles for cooling a magnetic pole coil and its application, belonging to the technical field of hydrogenerators. The installation method includes the following steps: S1. Hang the magnetic pole on the yoke, adjust the elevation of the magnetic pole center line to a preset position, and install and fix the magnetic pole stopper; S2. Fix the jack support on the side girdle of the magnetic pole, and then screw the jack into the jack support; S3. Fix the inter-pole baffle on the yoke, fix the disc spring retaining ring on the inter-pole baffle, and arrange disc springs in the disc spring retaining ring; S4. Adjust the jack to make the jack contact and compress the disc spring. The present invention improves the stiffness of the inter-pole support structure, can better adapt to the thermal expansion of the magnetic pole coil, thereby effectively ensuring that the magnetic pole coil is firmly fixed and can match the thermal deformation. The whole installation process is convenient and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generators, and particularly to a pole inter-pole support method and application for cooling a pole coil. Background Art

[0002] The pumped-storage unit has a high rotational speed and a large centrifugal force. To ensure the safety of the rotating components, a reliable support structure needs to be provided between the poles.

[0003] In the prior art, a support structure is often installed between the poles by using a retaining ring and set screws. Since it is difficult to grasp the accuracy of the gap between the set screws, if the gap is too large, the set screws cannot play their role, and if the gap is too small, it may cause large thermal stress. Therefore, the installation reliability of the support structure is poor.

[0004] Chinese patent document with the publication number CN205595925U and the publication date of September 21, 2016 discloses an insulating split-type inter-pole support structure suitable for the support of thin steel plates in a hydro-generator, which is characterized in that: it consists of a slotted single-piece insulating support block, a thin steel plate pull tab, a first bolt, a nut, a cylindrical pin, a second bolt, a dove-tail block, and a set screw. Multiple thin steel plate pull tabs are stacked together and placed in the slots of two slotted single-piece insulating support blocks, and are tightened into a whole with the first bolt and the nut, and are installed in the middle of two adjacent poles to support the two adjacent poles. The thin steel plate pull tab and the dove-tail block are tightened with the second bolt, and the cylindrical pin is placed in the pin holes of the thin steel plate pull tab and the dove-tail block to bear the centrifugal force. The dove-tail block is placed in the dove-tail groove of the yoke, and is pushed into the hole processed on the yoke with the set screw for axial limit and radial tightening.

[0005] The insulating split-type inter-pole support structure suitable for the support of thin steel plates in a hydro-generator disclosed in this patent document has a support pull tab composed of multiple high-strength thin steel plates stacked together, and multiple thin steel plate pull tabs and slotted single-piece insulating support blocks are combined into a whole with bolts and nuts. During the rotation of the unit, the support pull tab bears the radial force of the insulating support block to ensure the safe and stable operation of the unit. However, since a tension structure of thin steel plates is adopted, the risk of fatigue damage is higher, and the stress-bearing capacity of the insulating support block is limited, which is prone to layered cracking, affecting the overall stiffness of the inter-pole support structure and unable to ensure that the pole coil is firmly fixed and can match the thermal deformation. Summary of the Invention

[0006] In order to overcome the above defects of the prior art, the present invention provides a pole inter-pole support method and application for cooling a pole coil. The present invention improves the stiffness of the inter-pole support structure, can better adapt to the thermal expansion of the pole coil, thereby effectively ensuring that the pole coil is firmly fixed and can match the thermal deformation, and the whole installation process is convenient and reliable.

[0007] The present invention is realized through the following technical solutions:

[0008] A method for supporting between magnetic poles for cooling a magnetic pole coil, comprising the following steps:

[0009] S1. Hang the magnetic pole on the yoke, adjust the elevation of the center line of the magnetic pole to a preset position, and install and fix the magnetic pole stop block;

[0010] S2. Fix the jacking screw support on the side girdle of the magnetic pole, and then screw the jacking screw into the jacking screw support;

[0011] S3. Fix the inter-pole baffle on the yoke, fix the disc spring retaining ring on the inter-pole baffle, and arrange a disc spring inside the disc spring retaining ring;

[0012] S4. Adjust the jacking screw to make the jacking screw contact and compress the disc spring.

[0013] In the said S1, hanging the magnetic pole on the yoke means erecting and hanging the magnetic pole on the yoke through a magnetic pole hoisting tool.

[0014] In the said S1, there are multiple magnetic poles, and the multiple magnetic poles are fixedly installed in a central symmetry manner.

[0015] The said central symmetry fixed installation means arranging magnetic pole keys on the yoke, installing and fixing the magnetic poles through the magnetic pole keys, and fastening the magnetic pole keys by hammering.

[0016] The hammering frequency of the said hammering is to hammer once every 12 hours, and at least hammer and fasten 3 times.

[0017] In the said S1, adjusting the elevation of the center line of the magnetic pole to a preset position means adjusting by using a jack, and removing the jack after the magnetic pole stop block is fixed.

[0018] In the said S3, fixing the inter-pole baffle on the yoke means arranging a wedge key and a T-tail groove on the yoke, and fixing the end of the inter-pole baffle in the T-tail groove of the yoke through the wedge key.

[0019] In the said S3, the inter-pole baffle is located between any two adjacent magnetic poles, and the disc spring retaining ring is located in the middle of the inter-pole baffle.

[0020] In the said S4, the contact between the jacking screw and the disc spring means that the spherical surface at the end of the jacking screw contacts the circumference of the central circular hole of the disc spring.

[0021] In the said S4, compressing the disc spring means symmetrically tightening the jacking screws along both sides of the inter-pole baffle, and stopping when the remaining compression height of the disc spring is 10% - 80%.

[0022] An application of a method for supporting between magnetic poles for cooling a magnetic pole coil is applicable to the installation of the supporting structure between magnetic poles of a hydro-generator.

[0023] The beneficial effects of the present invention are mainly manifested in the following aspects:

[0024] 1. In the present invention, compared with the prior art, the stiffness of the inter-pole support structure is improved, which can better adapt to the thermal expansion of the pole coil, thereby ensuring that the pole coil is firmly fixed and can match the thermal deformation, and the entire installation process is convenient and reliable.

[0025] 2. In the present invention, in S1, there are multiple poles, and the multiple poles are fixedly installed in a central symmetry manner, which can balance the assembly weight of the rotor and improve the installation accuracy.

[0026] 3. In the present invention, the central symmetry hanging and fixing means that the pole is installed and fixed through a pole key, and the pole key is tightened by a sledgehammer. The installation is convenient and can firmly fix the pole.

[0027] 4. In the present invention, the knocking frequency of the sledgehammer is to knock once every 12 hours, and at least knock and tighten 3 times, which can ensure that the keying tightness of the pole key reaches the preset requirement and ensure the reliable fixation of the pole.

[0028] 5. In the present invention, in S1, adjusting the elevation of the pole center line to the preset position means using a jack for adjustment. After the pole block is fixed, the jack is removed, which can ensure the consistency of the center elevation of each pole in the circumference.

[0029] 6. In the present invention, in S3, fixing the inter-pole baffle on the yoke means setting a wedge key and a T-tail groove on the yoke, and fixing the end of the inter-pole baffle in the T-tail groove of the yoke through the wedge key. The inter-pole baffle is fixed by the wedge key, which can improve the fixing reliability of the inter-pole baffle and ensure the safety and reliability of the support structure.

[0030] 7. In the present invention, in S4, the contact between the setscrew and the disc spring means that the spherical surface at the end of the setscrew contacts the circumference of the central circular hole of the disc spring, which can ensure the reliable support between the setscrew and the disc spring.

[0031] 8. In the present invention, in S4, compressing the disc spring means symmetrically tightening the setscrews along both sides of the inter-pole baffle. The setscrews compress the disc spring until the remaining compression height of the disc spring is 10%-80%, leaving enough elastic range to adapt to the thermal expansion of the pole coil while ensuring the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further specifically described below in conjunction with the specification drawings and specific embodiments:

[0033] Figure 1 is the flow block diagram of the present invention;

[0034] Figure 2 is the installation schematic diagram of the support structure of the present invention;

[0035] Figure 3 isFigure 2 Enlarged view at position A in the middle;

[0036] Figure 4 Schematic diagram of the structure for mounting the magnetic pole onto the yoke;

[0037] Markings in the figure: 1. Magnetic pole, 2. Yoke, 3. Magnetic pole stop, 4. Setscrew support, 5. Side shroud, 6. Setscrew, 7. Inter-pole baffle, 8. Disc spring retainer, 9. Disc spring, 10. Magnetic pole key, 11. Wedge key, 12. T-slot. Detailed implementation method

[0038] Example 1

[0039] Refer to Figures 1-4 , a method for supporting between magnetic poles for cooling the magnetic pole coil, comprising the following steps:

[0040] S1. Mount the magnetic pole 1 onto the yoke 2, adjust the elevation of the center line of the magnetic pole 1 to the preset position, and install and fix the magnetic pole stop 3;

[0041] S2. Fix the setscrew support 4 on the side shroud 5 of the magnetic pole 1, and then screw the setscrew 6 into the setscrew support 4;

[0042] S3. Fix the inter-pole baffle 7 on the yoke 2, fix the disc spring retainer 8 on the inter-pole baffle 7, and arrange the disc spring 9 inside the disc spring retainer 8;

[0043] S4. Adjust the setscrew 6 to make the setscrew 6 contact and compress the disc spring 9.

[0044] This example is the most basic implementation method. Compared with the prior art, by adopting "fixing the disc spring retainer 8 on the inter-pole baffle 7, arranging the disc spring 9 inside the disc spring retainer 8, and adjusting the setscrew 6 to make the setscrew 6 contact and compress the disc spring 9", specifically selecting the elastic structure of the disc spring retainer 8 and the disc spring 9, the stiffness of the inter-pole support structure is improved, which can better adapt to the thermal expansion of the magnetic pole coil, so as to ensure that the magnetic pole coil is firmly fixed and can match the thermal deformation, and the whole installation process is convenient and reliable.

[0045] Example 2

[0046] Refer to Figures 1-4 , a method for supporting between magnetic poles for cooling the magnetic pole coil, comprising the following steps:

[0047] S1. Mount the magnetic pole 1 onto the yoke 2, adjust the elevation of the center line of the magnetic pole 1 to the preset position, and install and fix the magnetic pole stop 3;

[0048] S2. Fix the setscrew support 4 on the side shroud 5 of the magnetic pole 1, and then screw the setscrew 6 into the setscrew support 4;

[0049] S3. Fix the inter-pole baffle 7 on the yoke 2, fix the disc spring retaining ring 8 on the inter-pole baffle 7, and arrange a disc spring 9 inside the disc spring retaining ring 8;

[0050] S4. Adjust the setscrew 6 so that the setscrew 6 contacts and compresses the disc spring 9.

[0051] Preferably, in S1, hanging the magnetic pole 1 on the yoke 2 means erecting and hanging the magnetic pole 1 at the yoke 2 through a magnetic pole hoisting tool.

[0052] In S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are fixed by center-symmetric hanging.

[0053] This embodiment is a preferred embodiment. In S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are fixed by center-symmetric hanging, which can balance the assembly weight of the rotor and improve the installation accuracy.

[0054] Embodiment 3

[0055] Refer to Figures 1-4 , a magnetic pole inter-pole support method for cooling a magnetic pole coil, including the following steps:

[0056] S1. Hang the magnetic pole 1 on the yoke 2, adjust the elevation of the center line of the magnetic pole 1 to a preset position, and install and fix the magnetic pole stop 3;

[0057] S2. Fix the setscrew support 4 on the side shroud 5 of the magnetic pole 1, and then screw the setscrew 6 into the setscrew support 4;

[0058] S3. Fix the inter-pole baffle 7 on the yoke 2, fix the disc spring retaining ring 8 on the inter-pole baffle 7, and arrange a disc spring 9 inside the disc spring retaining ring 8;

[0059] S4. Adjust the setscrew 6 so that the setscrew 6 contacts and compresses the disc spring 9.

[0060] In S1, hanging the magnetic pole 1 on the yoke 2 means erecting and hanging the magnetic pole 1 at the yoke 2 through a magnetic pole hoisting tool.

[0061] In S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are fixed by center-symmetric hanging.

[0062] The center-symmetric hanging and fixing means that a magnetic pole key 10 is arranged on the yoke 2, and the magnetic pole 1 is installed and fixed through the magnetic pole key 10, and the magnetic pole key 10 is tightened by hammering.

[0063] The hammering frequency of the hammering is to hammer once every 12 hours, and hammer and tighten 3 times.

[0064] This embodiment is another preferred embodiment. The centrosymmetric hanging and fixing means that the magnetic pole 1 is installed and fixed through the magnetic pole key 10. The magnetic pole key 10 is fastened by hammering with a sledgehammer. The installation is convenient and can firmly fix the magnetic pole 1.

[0065] The hammering frequency of the sledgehammer is to hammer once every 12 hours and hammer and fasten at least 3 times, which can ensure that the keying tightness of the magnetic pole key 10 reaches the preset requirement and ensure the reliable fixation of the magnetic pole 1.

[0066] Embodiment 4

[0067] See Figures 1-4 , a magnetic pole interpolar support method for cooling a magnetic pole coil, comprising the following steps:

[0068] S1. Hang the magnetic pole 1 on the yoke 2, adjust the center line elevation of the magnetic pole 1 to the preset position, and install and fix the magnetic pole stop 3;

[0069] S2. Fix the jacking screw support 4 on the side girdle 5 of the magnetic pole 1, and then screw the jacking screw 6 into the jacking screw support 4;

[0070] S3. Fix the interpolar baffle 7 on the yoke 2, fix the disc spring retaining ring 8 on the interpolar baffle 7, and arrange a disc spring 9 in the disc spring retaining ring 8;

[0071] S4. Adjust the jacking screw 6 to make the jacking screw 6 contact and compress the disc spring 9.

[0072] In the above S1, hanging the magnetic pole 1 on the yoke 2 means erecting and hanging the magnetic pole 1 at the yoke 2 through a magnetic pole hoisting tool.

[0073] In the above S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are installed and fixed in a centrosymmetric manner.

[0074] Further preferably, the centrosymmetric hanging and fixing means that a magnetic pole key 10 is arranged on the yoke 2, and the magnetic pole 1 is installed and fixed through the magnetic pole key 10. The magnetic pole key 10 is fastened by hammering with a sledgehammer.

[0075] The hammering frequency of the sledgehammer is to hammer once every 12 hours and hammer and fasten 5 times.

[0076] In the above S1, adjusting the center line elevation of the magnetic pole 1 to the preset position means adjusting it with a jack, and removing the jack after the magnetic pole stop 3 is fixed.

[0077] This embodiment is another preferred embodiment. In S1, adjusting the center line elevation of the magnetic pole 1 to the preset position means adjusting it with a jack, and removing the jack after the magnetic pole stop 3 is fixed, which can ensure the consistency of the center elevations of all the magnetic poles 1 in the circumference.

[0078] Embodiment 5

[0079] See Figures 1-4 , a method for supporting between magnetic poles for cooling a magnetic pole coil, comprising the following steps:

[0080] S1. Hang the magnetic pole 1 on the yoke 2, adjust the elevation of the center line of the magnetic pole 1 to a preset position, and install and fix the magnetic pole stop 3;

[0081] S2. Fix the setscrew support 4 on the side girdle 5 of the magnetic pole 1, and then screw the setscrew 6 into the setscrew support 4;

[0082] S3. Fix the inter-pole baffle 7 on the yoke 2, fix the disc spring retaining ring 8 on the inter-pole baffle 7, and arrange a disc spring 9 inside the disc spring retaining ring 8;

[0083] S4. Adjust the setscrew 6 so that the setscrew 6 contacts and compresses the disc spring 9.

[0084] In the said S1, hanging the magnetic pole 1 on the yoke 2 means erecting and hanging the magnetic pole 1 at the yoke 2 through a magnetic pole hoisting tool.

[0085] In the said S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are fixedly installed in a centrosymmetric manner.

[0086] The said centrosymmetric hanging and fixing means arranging a magnetic pole key 10 on the yoke 2, installing and fixing the magnetic pole 1 through the magnetic pole key 10, and fastening the magnetic pole key 10 by hammering.

[0087] The hammering frequency of the said hammering is to hammer once every 12 hours and hammer and fasten 6 times.

[0088] In the said S1, adjusting the elevation of the center line of the magnetic pole 1 to a preset position means adjusting it with a jack, and removing the jack after the magnetic pole stop 3 is fixed.

[0089] In the said S3, fixing the inter-pole baffle 7 on the yoke 2 means arranging a wedge key 11 and a T-tail groove 12 on the yoke 2, and fixing the end of the inter-pole baffle 7 in the T-tail groove 12 of the yoke 2 through the wedge key 11.

[0090] In the said S3, the inter-pole baffle 7 is located between any two adjacent magnetic poles 1, and the disc spring retaining ring 8 is located in the middle of the inter-pole baffle 7.

[0091] This embodiment is another preferred embodiment. In S3, fixing the inter-pole baffle 7 on the yoke 2 means arranging a wedge key 11 and a T-tail groove 12 on the yoke 2, and fixing the end of the inter-pole baffle 7 in the T-tail groove 12 of the yoke 2 through the wedge key 11. Fixing the inter-pole baffle 7 with the wedge key 11 can improve the fixing reliability of the inter-pole baffle 7 and ensure the safety and reliability of the support structure.

[0092] Embodiment 6

[0093] See Figures 1-4 , a method for supporting between magnetic poles for cooling a magnetic pole coil, comprising the following steps:

[0094] S1. Hang the magnetic pole 1 on the yoke 2, adjust the elevation of the center line of the magnetic pole 1 to a preset position, and install and fix the magnetic pole stop 3;

[0095] S2. Fix the setscrew support 4 on the side girdle 5 of the magnetic pole 1, and then screw the setscrew 6 into the setscrew support 4;

[0096] S3. Fix the inter-pole baffle 7 on the yoke 2, fix the disc spring retaining ring 8 on the inter-pole baffle 7, and arrange the disc spring 9 inside the disc spring retaining ring 8;

[0097] S4. Adjust the setscrew 6 to make the setscrew 6 contact and compress the disc spring 9.

[0098] In the above S1, hanging the magnetic pole 1 on the yoke 2 means standing and hanging the magnetic pole 1 at the yoke 2 through a magnetic pole hoisting tool.

[0099] In the above S1, there are multiple magnetic poles 1, and the multiple magnetic poles 1 are mounted and fixed in a central symmetry manner.

[0100] The above-mentioned central symmetry mounting and fixing means that a magnetic pole key 10 is arranged on the yoke 2, the magnetic pole 1 is installed and fixed through the magnetic pole key 10, and the magnetic pole key 10 is tightened by hammering.

[0101] The hammering frequency of the above-mentioned hammering is to hammer once every 12 hours, and hammer and tighten 8 times.

[0102] In the above S1, adjusting the elevation of the center line of the magnetic pole 1 to a preset position means adjusting it with a jack, and removing the jack after the magnetic pole stop 3 is fixed.

[0103] In the above S3, fixing the inter-pole baffle 7 on the yoke 2 means arranging a wedge key 11 and a T-tail groove 12 on the yoke 2, and fixing the end of the inter-pole baffle 7 in the T-tail groove 12 of the yoke 2 through the wedge key 11.

[0104] More preferably, in the above S3, the inter-pole baffle 7 is located between any two adjacent magnetic poles 1, and the disc spring retaining ring 8 is located in the middle of the inter-pole baffle 7.

[0105] In the above S4, the contact between the setscrew 6 and the disc spring 9 means that the spherical surface at the end of the setscrew 6 contacts the circumference of the central circular hole of the disc spring 9.

[0106] In the above S4, compressing the disc spring 9 means symmetrically tightening the setscrew 6 along both sides of the inter-pole baffle 7, and the setscrew 6 compresses the disc spring 9 until the remaining compression height of the disc spring 9 is 80% and then stops.

[0107] This embodiment is the optimal implementation mode. In S4, the contact between the setscrew 6 and the disc spring 9 means that the spherical surface at the end of the setscrew 6 contacts the circumference of the central circular hole of the disc spring 9, which can ensure reliable support between the setscrew 6 and the disc spring 9.

[0108] In S4, compressing the disc spring 9 means symmetrically tightening the setscrews 6 along both sides of the inter-pole baffle 7. The setscrews 6 compress the disc spring 9 until the remaining compression height of the disc spring 9 reaches 80%. While ensuring the support effect, enough elastic range is reserved to adapt to the thermal expansion of the magnetic pole coil.

[0109] The basic principle of the present invention is as follows:

[0110] By hanging the magnetic pole 1 on the yoke 2, then adjusting the elevation of the center line of the magnetic pole 1 to the preset position, installing and fixing the magnetic pole stop 3, fixing the setscrew support 4 on the side girdle 5 of the magnetic pole 1, screwing the setscrew 6 into the setscrew support 4, fixing the inter-pole baffle 7 on the yoke 2, fixing the disc spring retainer 8 on the inter-pole baffle 7, and arranging the disc spring 9 inside the disc spring retainer 8; adjusting the setscrew 6 to make the setscrew 6 contact and compress the disc spring 9. By adopting this specific structural form of the disc spring retainer 8 cooperating with the inter-pole baffle 7, not only the stiffness of the inter-pole support structure is improved, but also it can better adapt to the thermal expansion of the magnetic pole coil, thus ensuring that the magnetic pole coil is firmly fixed and can match the thermal deformation. The whole installation process is convenient and reliable.

[0111] The preparation work for the magnetic pole 1 is as follows:

[0112] The magnetic pole 1 is transported to the installation room. After unpacking, it should be checked that the magnetic pole 1 is not damp and damaged; use the magnetic pole horizontal lifting tool to lift out the magnetic pole 1, clean and check that the magnetic pole 1 is not damaged, and it is required that the surface of the magnetic pole 1 is free of dust and dirt; in a dry, clean and well-lit site, conduct an electrical test on the magnetic pole 1. The test voltage of the AC withstand voltage test is 10 times the rated excitation voltage plus 1500V and the test voltage is not less than 3000V. Use a megohmmeter to measure the insulation resistance of the magnetic pole 1, and the insulation resistance is not less than 200MΩ. For the magnetic pole 1 that does not meet the requirements, heat and dry it, control the heating temperature at 60°C - 80°C, and the heating time is not less than 24 hours. After the magnetic pole 1 slowly cools down to room temperature, measure the insulation resistance again to ensure that the insulated magnetic pole 1 has good insulation performance and is thoroughly dried.

[0113] The setting of the disc spring 9 is as follows:

[0114] The number and setting method of the disc springs 9 are determined according to the lateral component force and deformation size of the magnetic pole coil. When the lateral component force is large and the deformation is small, the stacked mode of multiple disc springs 9 is adopted to ensure the support stiffness; when the lateral component force is small and the deformation is large, the opposed mode of multiple disc springs 9 is adopted to ensure the compression amount reserve; when the lateral component force is large and the deformation is large, the stacked plus opposed mode of multiple disc springs 9 is adopted to ensure the support stiffness while improving the compression amount reserve.

Claims

1. A method for supporting between magnetic poles for cooling a magnetic pole coil, characterized in that, It includes the following steps: S1. Hang the magnetic pole (1) on the yoke (2), adjust the elevation of the center line of the magnetic pole (1) to the preset position, and install and fix the magnetic pole stop block (3); S2. Fix the setscrew support (4) on the side shroud (5) of the magnetic pole (1), and then screw the setscrew (6) into the setscrew support (4); S3. Fix the inter-pole baffle (7) on the yoke (2), fix the disc spring retaining ring (8) on the inter-pole baffle (7), and arrange the disc spring (9) inside the disc spring retaining ring (8); The number and arrangement method of the disc springs (9) are determined according to the lateral component force and deformation size of the magnetic pole coil. When the lateral component force is large and the deformation is large, multiple disc springs (9) are stacked and opposed; S4. Adjust the setscrew (6) so that the setscrew (6) contacts and compresses the disc spring (9); In the above S3, fixing the inter-pole baffle (7) on the yoke (2) means setting a wedge key (11) and a T-tail groove (12) on the yoke (2), and fixing the end of the inter-pole baffle (7) in the T-tail groove (12) of the yoke (2) through the wedge key (11); In the above S3, the inter-pole baffle (7) is located between any two adjacent magnetic poles (1), and the disc spring retaining ring (8) is located in the middle of the inter-pole baffle (7); In the above S4, compressing the disc spring (9) means symmetrically tightening the setscrews (6) along both sides of the inter-pole baffle (7), and stopping when the remaining compression height of the disc spring (9) is 10%-80% after the setscrew (6) compresses the disc spring (9); A gap space is provided between the inter-pole baffle (7) and the magnetic pole coil.

2. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 1, characterized in that: In the above S1, hanging the magnetic pole (1) on the yoke (2) means erecting and hanging the magnetic pole (1) at the yoke (2) through a magnetic pole hoisting tool.

3. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 1, characterized in that: In the above S1, there are multiple magnetic poles (1), and the multiple magnetic poles (1) are fixed by central symmetric hanging.

4. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 3, characterized in that: The above central symmetric hanging and fixing means setting a magnetic pole key (10) on the yoke (2), installing and fixing the magnetic pole (1) through the magnetic pole key (10), and tightening the magnetic pole key (10) by hammering.

5. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 4, characterized in that: The hammering frequency of the above hammering is 1 time every 12 hours, and at least 3 times of hammering and tightening are required.

6. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 5, characterized in that: The number of hammering and tightening times of the above hammering is 5 times.

7. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 5, characterized in that: The number of hammering and tightening times of the above hammering is 8 times.

8. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 1, characterized in that: In the above S1, adjusting the elevation of the center line of the magnetic pole (1) to the preset position means adjusting it with a jack, and removing the jack after the magnetic pole stop block (3) is fixed.

9. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 1, characterized in that: In the above S4, the contact between the setscrew (6) and the disc spring (9) means that the spherical surface at the end of the setscrew (6) contacts the circumference of the central circular hole of the disc spring (9).

10. A method for supporting between magnetic poles for cooling a magnetic pole coil according to claim 1, characterized in that: In the above S4, when the setscrew (6) compresses the disc spring (9), stop when the remaining compression height of the disc spring (9) is 80%.

11. Application of a method for supporting between magnetic poles for cooling a magnetic pole coil, characterized in that: Adopt the magnetic pole inter-pole support method for cooling the magnetic pole coil as described in claim 1, which is applicable to the installation of the magnetic pole inter-pole support structure of a hydro-generator.

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